Gantry grab crane

     Gantry grab cranes are mainly used in outdoor fixed cargo floor for mining, coal, timber and other transportation.

Single girder and double girder crane grab grab crane
Mainly refers to the bridge crane, according to the number of different beams into a single girder and double girder crane grab grab cranes. Grab bridge cranes with the same functionality.

Folding arm grab crane
Divided by handling objects hanging logs, sugar cane out and so on. But with the development of science, China has developed a multi-grab cranes.

Grab classified according to the type
Shell-type grab crane
For ports, terminals, stations garages, mining and other aspects of a variety of bulk cargo loading, minerals, coal, sand and gravel, earth, etc., can also be used for earth excavation, foundation and trenching, road construction, laying Hand pallet trucks and other projects.
Orange Peel grab crane
Iron and steel scrap for steel refining work crawling and points, waste disposal sites and construction sites of bulk waste, waste separation mixing, loading, unloading and handling work, car automobile recycling field butchering, refining and recycling efforts, bucket teeth can be replacement, and the use of high hardness wear-resistant steel, ensuring long life; flap shell can choose according to different working environment; fully closed-valve shells, semi-closed retractable flap shell, shells and narrow brimmed flap flap shell.
Timber grab is mainly used for all kinds of logs, lumber, pipes, drums and other objects capture and handling, you can grab a single root can also be multi-grab, with the crane, gantry crane and other cranes use. For timber yard, docks unloading and other occasions.
Grab straw bales straw power plant is a specially developed material handling equipment, mainly for straw bales unloading, stacking storage, feeding work. High-level work, to adapt plant stalk positions humid environment, dusty, used frequently, the demand for uninterrupted work

Classification

tion
Grab crane crane classification according to
Divided bridge grab crane, gantry grab cranes, knuckle boom crane grabs. Can be divided into single-girder cranes and double girder grab grab cranes.
This crane will be coal, ore and phosphates like unloading cargo from the cargo hold into the funnel, then by conveyor to a storage yard or loading unloading cargo units.

Bridge grab crane
Bridge grab crane lifting equipment for the bulk material and granular materials only.
Conventional bridge grab crane configuration: The cab control, separate cab and closed two kinds. Various organizations to adopt winding-lift motors, resistance scissor pallet truck.
Bridge Crane lifting equipment level work: A6, A7, working environment 20 ℃ ~ +40 ℃ This model is not recommended for explosion-proof, insulation requirements working environment.
Bridge Crane lifting equipment available for the user to select other configurations:
One, grab the opening and closing direction parallel and perpendicular to the main beam two kinds;
2, from the weight including grab weight;
3, the car with the rain cover, the top surface of the ultimate size of H + h;
4, and the maximum amount of outdoor crane wheel pressure corresponding increase of 5% shall be
5, carts conducting a safety trolley line angles and two forms for selection;
6, the crane has a standard trolley and weighing trolley with two choices;
7, according to need can be equipped with cane grab, junk grab, timber grab, and other types of grippers.
8, grab divided into: single rope grab, double rope grab, electric grab, grab the target set

Introduction grab crane

Grab crane divided into bridge grab crane, gantry grab crane , folding arm grab crane , grab crane is often said that usually refers to folding arm grab cranes, such as logs hanging .

Outline
Grab crane , grab crane common name , English name : Grab crane / grabbing crane.
Grab crane is equipped with a grab crane , widely used in ports, terminals , stations garages, mining and other aspects of a variety of bulk cargo loading , logs, minerals , coal, sand and gravel , earth , etc. .

Feature
1 grab crane birth and development of greatly improving the efficiency of production ,
For example: before the birth grab crane , dock loading and unloading ore, inside cabin with 12 to 16 workers , each one spade , two pairs, each take a large leather string bag , a spade a spade to large leather string bag Lane shovel ore, a string bag up to 4 tons cargo net . Wangdou shovel full, then hung up the crane . A maximum of 8 hours Funakura dry 200 tons cargo . And now a large ship unloaders unloading ore , unloading more than two thousand tons per hour will be able to mine, providing production efficiency greatly .
2 Grab the birth and invention also improve the production safety,
For example: before the birth grab crane , dock loading and unloading timber, inside cabin with 4 to 6 workers , first with a small cross section of wire rope in the gap in the log pile to wear to wear , surrounded estimate of the area, the small ends of the rope Hand pallet trucks on crane hooks , lifting a ~ 2 m distance, so tilt to one end of logs and workers to take a 16 to 28 wire rope, wire rope and heavy front-end hook is lifted from the wood pile with a neutral rejection of the past in the other side of the workers quickly catch or rope attached to the hook will slip into the groove wood pile , workers have to pull the rope rope thrown re- rejection , or other side of the workers with a long wooden stick loaded with hooks tool scooped rope , and then hook hanging on rope tied up ...... will log in the process logs may scroll , crushing workers' hands and feet , there may be more than bundles of wood workers overload , wire rope suspended in the air , a dozen dozens of aerial roots or root logs fall , will people killed . Later Bao Qifan invented the timber grab, greatly reducing the personal injury.

(4) Test suspension

The bridge crane Scissor lift  ff the ground 0. 3-0. 5m, after 10min after no abnormality, further shaking bridge crane testing, inspection winches, masts, ropes and anchor cable winds of reliability, all normal , continue lifting.

(5) install the operating room

The bridge crane lifting off the ground about 2.5m high, setting up the sleepers under the crane heap, so that the crane resting on the sleepers on the heap, and then installed in the operating room on the frame. Zhuangwan cab car after adjusting the position, this position was calculated to determine the mast lifting points on both sides to reach equilibrium.

Then leave the sleeper crane helicopter heap a small distance, carefully adjusting the position of the car, make sure to balance again after fixing the car. Check other lifting facilities, safe and reliable confirmation only after the lifting style lifting.

but should be tied at the wood and other protective pads.

Electric stacker of masts, the mast should be pre-wind cable rope bindings temporarily close the roof truss bottom chords on the mast until the mast was hanging to determine the location immediately after the entire wind cable rope fastened on top of the mast and tighten the ground, such as individual wind cable rope lift after the force has stayed truss chord or circumstances, the application temporarily wind cable hove live mast, fixed wind cable rope adjusted to the appropriate location, and then release the temporary wind cable wire.

⑤ hung pulley block, set the winch for small and medium-bridge from the physical machine, and can be hung two pulley block, with two hoisting winches, hoist mast set the location and distance from the center is greater than the length of the mast, winches available fixed column within the plant roots, but should be tied at the wood and other protective pads.

(2) group on the carts, loaded trolley traveling crane girders, the car shipped to the lifting position for assembly, carts group finished, the car is placed on a trolley track, and carts tied securely.

(3) bundled beam carts for less than 50t overhead crane, just hang two pulley block, generally using a cross-tied method, the method is: the mast lug toward the direction of the end beam bridge crane system hang hanging pulley block , running rope through the top of the mast mast fixed pulley down to the bottom along the guide pulley toward the winch. Run rope using sequential method. In the side of the cart with a rope tied to the beam cross-licensing to go through two openings platen bundle, so that tied rope was tapped: "∞" shape, commonly known as "8"-shaped bundle method, as shown in 7-9.

When the lack of effective height of the mast, can be boom EMU binding movable trolley beam inside the carts in the top surface of the beam erection carts beams, ends binding slings, sling around the underside of the beam from moving into a tie tackle.

Bridge crane lifting operations

Bridge crane within the plant, because the top rail from the roof chord close, plus overhead cranes are larger in size and weight, it is not mechanized lifting.

SMEs often use a single mast crane lifting the overall standing, so you can improve efficiency, shorten the construction period and reduce high-altitude operations, the construction procedure is as follows.

(A) the erection of the mast

① mast mast height maximum height of the ground to the roof top of the mast to a height less operating space between the roof and the height of the mast sleepers inquiry. Minimum height should meet the needs of lifting height.

② mast mast position due to be Electric pallet jack in the carts between the two main beam bridge crane center of gravity, the car must be biased, but the mast should deviate from the centerline of plant, shown in Figure 7-8. Its offset should be based on weight carts, trolleys and trolley weight offset distance determined by calculation.

③ mast mast bottom should be compacted bottom handle, smooth, spread over two sleepers, if necessary, can be added between two sleepers rails or beams, paved area determined by calculating base endurance, ensure that the ground bear mast axial pressure.

④ mast mast erection methods used mobile cranes erect, quick and safe crane beam can also be used stand mast bracket wrench can also be used auxiliary mast vertical mast. Using the crane beam corbel Erecting the mast, to carry on the crane beam corbel force checking to ensure the transverse horizontal component does not exceed the maximum weight within the span of the bridge crane nominal weight and the amount of the sum of a trolley / 20.

but also when there is poor road or pressing operation can be injured fingers.

  Small crane seat can be adjusted conditioning mirror, old age small crane drivers know, there are three small crane on the "eyes", referring to a mirror, mirrors and rear view mirror. Mirror, sky and ground transmission lines should be in the rearview mirror, the upper, outer rear view mirror also can be seen in 2/3 of the earth, 1/3 of the sky, it can guarantee the majority of small crane panoramic view of the road. When about conditioning, probably also out of the body Electric pallet truck mirrors are now within sight, but not too much, simply grasp the neighboring state line. Incomplete view mirror, the best is in connection with a wide-angle lens, which can ensure more deepened all the way. But uncorrected substandard goods, some small reflective mirror depicting cranes unreasonable long-term use can cause small crane driver's vision, risk. Small crane final conditioning inside rearview mirror, small crane control staff sit, probably can clearly investigate road standards, you lower, not higher, to grasp more information. In addition, special attention is that some owners of large items placed near the rear window, which is affecting the results.

How to take care of small crane arm

Small crane boom maintenance conditions, Jining Stone Construction Machinery Co., Ltd. specializes crane, small crane, mini crane, 10 t crane, 12 t crane, etc. complete. Requires that all parts intact and configuration can work, crane operation. To ensure that there is capacity in the case and no damage to the crane for lifting heavy objects are generally if it fails, there are many more accidents will occur, causing economic losses to the people. So check when a small jib crane carefully to ensure that it can make a good stretch rope, but also to ensure the boom conditions in their work better. Stone Construction Machinery Co., Ltd. Jining welcome customers to buy! How to adjust the seat and a small crane small crane rearview mirror? Such a simple control problem is to prevent the risk of the source. According to the survey, incorrect posture and control small crane Sight bad will directly cause accidents, do not think this is what others say, do not believe that will now see a small crane to manage personal stance is correct. Small crane brake pedal depth, number of twists and turns will have legs; while back too straight, do not lie, the best control condition, when the natural lie shoulder, arms straight after wrist probably just resting on the steering wheel to the opposite direction of wheel is guaranteed troops, but the appearance Taiwan km, speed, and other functions can also view a display size. Trembling hand wheel, the best is in the "3" and "9" pallet jacks. Natural thumb on the steering wheel spokes. Some people love the thumb, or conversely from the lateral direction of the wheel, but in fact this is a very risk-control habits, so it makes the driver's steering wheel force feedback discrimination,

Small crane proper driving seat

 How to adjust the seat and a small crane small crane rearview mirror? Such a simple control problem is to prevent the risk of the source. According to the survey, incorrect posture and control small crane Sight bad will directly cause accidents, do not think this is what others say, do not believe that will now see a small crane to manage personal stance is correct. Small crane brake pedal depth, number of twists and turns will have legs; while back too straight, do not lie, the best control condition, when the natural lie shoulder, arms straight after wrist Hand pallet jacks just resting on the steering wheel to the opposite direction of wheel is guaranteed troops, but the appearance Taiwan km, speed, and other functions can also view a display size. Trembling hand wheel, the best is in the "3" and "9" position. Natural thumb on the steering wheel spokes. Some people love the thumb, or conversely from the lateral direction of the wheel, but in fact this is a very risk-control habits, so it makes the driver's steering wheel force feedback discrimination, but also when there is poor road or pressing operation can be injured fingers.
     Small crane seat can be adjusted conditioning mirror, old age small crane drivers know, there are three small crane on the "eyes", referring to a mirror, mirrors and rear view mirror. Mirror, sky and ground transmission lines should be in the rearview mirror, the upper, outer rear view mirror also can be seen in 2/3 of the earth, 1/3 of the sky, it can guarantee the majority of small crane panoramic view of the road. When about conditioning, probably also out of the body outside mirrors are now within sight, but not too much, simply grasp the neighboring state line. Incomplete view mirror, the best is in connection with a wide-angle lens, which can ensure more deepened all the way. But uncorrected substandard goods, some small reflective mirror depicting cranes unreasonable long-term use can cause small crane driver's vision, risk. Small crane final conditioning inside rearview mirror, small crane control staff sit, probably can clearly investigate road standards, you lower, not higher, to grasp more information. In addition, special attention is that some owners of large items placed near the rear window, which is affecting the results.

To see a small screw axle rear axle crane is not regular, big and small the same

Buy small crane Precautions Buy small crane, a vehicle depends on the appearance of a small crane, small crane structure, small crane hydraulic system, there is no certification, especially small crane front and rear axles and gearbox, is not innovative! Verify small crane old gearbox, front and rear axles trick to have: the ability to investigate the appearance of a small crane front and rear axles have dirty oil, can scratch the metal weapon look dead there is no slop! To see a small screw axle rear axle crane is not regular, big and small the same, especially since marginal axoneme empty thread is not clear, there is no split at the scene.Small crane / crane pallet jacks suspension system of a small multi- axle chassis a necessary condition , in addition to multi-axis can play a balancing effect, but can add a whole roll stiffness to overcome brake forward, frame height and lock conditioning dead suspension and other functions. Small crane / crane pneumatic suspension system consists of a small gas flow system with stretched spring and composition . Small crane / small crane gas spring is stretched gas as elastic components, the introduction of the gas and oil between the piston as a central medium ; while with fluid flow system using activity balance shaft bearing , vibration damping , regulating body height.
Small crane / small crane pneumatic suspension system has the following advantages .
    Enhanced Oil stretched spring pressure to accumulator with steel tube as an elastic element , able to accept very high pressure , generally up to 20MPa, therefore , small size, light weight, axle load for heavy duty steel stretched spring when the mass ratio of the light 50 % or more.
    Effectively balance shaft bearing pneumatic suspension system can converge through the pipeline , different axle oil stretched spring cylinders link up play balance shaft bearing results.

Buy small crane Precautions

Buy small crane, a vehicle depends on the appearance of a small crane, small crane structure, small crane hydraulic system, there is no certification, especially small crane front and rear axles and gearbox, is not innovative! Verify small crane old gearbox, front and rear axles trick to have: the ability to investigate the appearance of a small crane front and rear axles have dirty oil, can scratch the metal weapon look dead there is no slop! To see a small screw axle rear axle crane is not regular, big and small the same, especially since marginal axoneme empty thread is not clear, there is no split at the scene.
 Electric pallet jack balance shaft bearing pneumatic suspension system can converge through the pipeline , different axle oil stretched spring cylinders link up play balance shaft bearing results.
    Progressive small crane travels ride hydrocarbon stretched spring can get excellent elasticity characteristic curve and lower natural frequency, so small crane traveling ride and comfort is greatly superior to steel stretched spring suspension, and reduced vehicle the impact on the ground . Small crane pneumatic suspension variable stiffness elastic characteristic curve can avoid attacks suspension breakdown on cross-country road is very important.
    Add a small crane roll stiffness when the vehicle is turning, because the effect of centrifugal force , moving the center of gravity , so small crane significantly skewed. Small crane pneumatic suspension system will be left and right oil stretched spring series , can greatly enhance vehicle roll stiffness . Pneumatic suspension cylinders best selection of large and small lumen area ratio can be obtained aspiring roll stiffness . Similarly, the front and rear cylinder gas stretched spring series , can improve the whole vertical angular stiffness to overcome the brake to allow representation .

different axle oil stretched spring cylinders link up play balance shaft bearing results.

  Enhanced Oil stretched spring pressure to accumulator with steel tube as an elastic element , able to accept very high pressure , generally up to 20MPa, therefore , small size, light weight, axle load for heavy duty steel stretched spring when the mass ratio of the light 50 % or more.
    electric pallet trucks balance shaft bearing pneumatic suspension system can converge through the pipeline , different axle oil stretched spring cylinders link up play balance shaft bearing results.
    Progressive small crane travels ride hydrocarbon stretched spring can get excellent elasticity characteristic curve and lower natural frequency, so small crane traveling ride and comfort is greatly superior to steel stretched spring suspension, and reduced vehicle the impact on the ground . Small crane pneumatic suspension variable stiffness elastic characteristic curve can avoid attacks suspension breakdown on cross-country road is very important.
    Add a small crane roll stiffness when the vehicle is turning, because the effect of centrifugal force , moving the center of gravity , so small crane significantly skewed. Small crane pneumatic suspension system will be left and right oil stretched spring series , can greatly enhance vehicle roll stiffness . Pneumatic suspension cylinders best selection of large and small lumen area ratio can be obtained aspiring roll stiffness . Similarly, the front and rear cylinder gas stretched spring series , can improve the whole vertical angular stiffness to overcome the brake to allow representation .

Jining Stone Construction Machinery Co

Small crane / small crane / Jining Stone Construction Machinery Co., Ltd. - small crane chassis designSmall crane / small crane / Jining Stone Construction Machinery Co., Ltd. - small crane chassis paint
Small crane / small crane chassis depicts the key skills in pneumatic suspension system and multi -axle steering system depicted , these two skills are unique skill crane whole earth . Faced with pneumatic suspension system under discussion
Small crane / crane pneumatic suspension system of a small multi- axle chassis a necessary condition , in addition to multi-axis can play a balancing effect, but can add a whole roll stiffness to overcome brake forward, frame height and lock conditioning dead suspension and other functions. Small crane / crane pneumatic electric stacker system consists of a small gas flow system with stretched spring and composition . Small crane / small crane gas spring is stretched gas as elastic components, the introduction of the gas and oil between the piston as a central medium ; while with fluid flow system using activity balance shaft bearing , vibration damping , regulating body height.
Small crane / small crane pneumatic suspension system has the following advantages .

Small crane ban hanging oblique oblique CAUSE

Small crane safety operation rules: small crane Hand Pallet Truck rope hanging objects to go through the center of gravity, and stick straight, that ban oblique oblique hanging. If small oblique hanging crane will not only form a small crane rope pull off overload and cause heavy swing jostling objects and people, and lead to personal and equipment trouble.
     Lift the weight from the ground is assumed as Q objects straight lifting, rope tension is equal to Q or S only slightly larger than Q, the weight to be freed from the ground.
     But if it is stayed, a small crane and the ground wire to the vertical at an angle. Based on mechanics, acting on the rope tension S, so that the object can be decomposed into a straight upward force P and the horizontal movement of the force F, to make the object hanging from the ground, P at least equal to Q. F along with the increase of the angle. That is, the small crane oblique view larger crane, lifting the same weight of the rope forces acting on the object is greater. So, if a full load when lifting heavy loads straight, then certainly overload when hanging diagonally, and even seizures rope pulled off trouble.
     In addition, when a small crane hanging oblique horizontal component F, when the weight off the ground before the effects of friction also suffered. Out of the ground in an instant, the object will swing to straight center, which has staff able to hang hanging around the operating personnel or other objects jostling caused trouble.

Stone Construction Machinery Co., Ltd. Jining to introduce you to run a small hydraulic crane

1. First, you have a tank containing hydraulic oil, hydraulic oil supplied to the pump.
(2) Next, the form must have a pump oil flow, but small crane pump oil from the tank can not. Gravity causes the oil into the pump.
3. Small crane pump each rotation, it will release the oil. An important point to remember is to just move the pump capacity. Hand pallet jacks capacity determines the speed of movement. Load the formation pressure, small crane pump does not generate pressure.
4. Small crane pump and control valve connected between the pipes. Small crane pump out the oil flow to the valve. Valve's task is to make the oil flow to the cylinder or tank.
5. The next step is the fuel tank system, the fuel tank for the actual work. There are two tubing connecting the control valve cylinder.
6. Small crane pump out the oil flow through the control valve piston at the bottom of a large cavity. Load flow resistance generated and shaped raw pressure.
7. System seems to be very complete, in fact, still incomplete. It also requires a very important part. We must consider suddenly overloaded or other fault in the case of the protection of all the components from damage. Even if the system fails, the pump continues to turn to the oil supply system. If the pump out oil with nowhere to go, the pressure will accumulate until some of the parts are damaged. We mount a relief valve to prevent damage. Often, it is turned off, but the pressure reaches the set amount, the valve will open and allow the oil tank.
8. Small crane tanks, pumps, control valves, cylinders, connecting piping and pressure relief valve consisting of the basic hydraulic system. All of these components are required. Now that you have a clear understanding of the working process of the hydraulic system

Since the hard particles into the friction surfaces cause wear.

Small crane bridge crane reducer is an important transmission components, through the teeth for torque transmission, Hand Pallet Truck-speed operation of the motor adjusted to the desired speed, the transmission torque during gear teeth will appear broken tooth surface pitting, tooth surface gum and the tooth surface abrasion and other mechanical failure, causing the gear causes of failure are as follows:

a. tooth surface is not smooth, stress concentration points raised, or lubricants dirty;
b. overload or short-term impact load, caused by repeated bending fatigue fracture;
c. Since the hard particles into the friction surfaces cause wear.
d. due to high temperature caused by lubrication failure;
2 small crane preventive measures

a. replacement of a small crane lubricant should be timely, and put a small crane housing clean, but small crane to select the appropriate type of lubricant;
b. small crane can not be set up to use, start braking to slow, steady, non-specific circumstances prohibit suddenly hit the anti-car;
c. should always check the small crane lubricant is clean; find small crane dirty lubrication must be promptly replaced.

he transport and storage process to prevent mechanical damage

With the design and manufacture of materials science and technology, Jining Stone Construction Machinery Co., Ltd. in the small crane used in the production of many new materials, new technologies, new structures, require a small mechanical crane small crane technical support and management more scientific, better. To this end the organization as a small crane management and small crane operator, a small crane to strict routine maintenance work, the small crane in good technical condition. Two small crane to be taken to Electric pallet truck that the transport and storage process to prevent mechanical damage, deformation, corrosion and so on. Third, we must carefully maintain small crane machinery, to be correct and reasonable conduct regular and irregular small crane maintenance to keep small crane machinery for cleaning, clean, regularly check the technical state of a small crane machinery, abnormal timely manner, for a small crane loose and offset fastening and adjustment of parts in a timely manner, for some small crane preventive replacement of wearing parts and so on. Four is to educate small crane operator crane proper use and operation of a variety of small construction machinery, reduce and prevent human errors caused by small crane mechanical failure.

he transport and storage process to prevent mechanical damage

With the design and manufacture of materials science and technology, Jining Stone Construction Machinery Co., Ltd. in the small crane used in the production of many new materials, new technologies, new structures, require a small mechanical crane small crane technical support and management more scientific, better. To this end the organization as a small crane management and small crane operator, a small crane to strict routine maintenance work, the small crane in good technical condition. Two small crane to be taken to Electric pallet truck that the transport and storage process to prevent mechanical damage, deformation, corrosion and so on. Third, we must carefully maintain small crane machinery, to be correct and reasonable conduct regular and irregular small crane maintenance to keep small crane machinery for cleaning, clean, regularly check the technical state of a small crane machinery, abnormal timely manner, for a small crane loose and offset fastening and adjustment of parts in a timely manner, for some small crane preventive replacement of wearing parts and so on. Four is to educate small crane operator crane proper use and operation of a variety of small construction machinery, reduce and prevent human errors caused by small crane mechanical failure.

he transport and storage process to prevent mechanical damage

With the design and manufacture of materials science and technology, Jining Stone Construction Machinery Co., Ltd. in the small crane used in the production of many new materials, new technologies, new structures, require a small mechanical crane small crane technical support and management more scientific, better. To this end the organization as a small crane management and small crane operator, a small crane to strict routine maintenance work, the small crane in good technical condition. Two small crane to be taken to Electric pallet truck that the transport and storage process to prevent mechanical damage, deformation, corrosion and so on. Third, we must carefully maintain small crane machinery, to be correct and reasonable conduct regular and irregular small crane maintenance to keep small crane machinery for cleaning, clean, regularly check the technical state of a small crane machinery, abnormal timely manner, for a small crane loose and offset fastening and adjustment of parts in a timely manner, for some small crane preventive replacement of wearing parts and so on. Four is to educate small crane operator crane proper use and operation of a variety of small construction machinery, reduce and prevent human errors caused by small crane mechanical failure.

he transport and storage process to prevent mechanical damage

With the design and manufacture of materials science and technology, Jining Stone Construction Machinery Co., Ltd. in the small crane used in the production of many new materials, new technologies, new structures, require a small mechanical crane small crane technical support and management more scientific, better. To this end the organization as a small crane management and small crane operator, a small crane to strict routine maintenance work, the small crane in good technical condition. Two small crane to be taken to Electric pallet truck that the transport and storage process to prevent mechanical damage, deformation, corrosion and so on. Third, we must carefully maintain small crane machinery, to be correct and reasonable conduct regular and irregular small crane maintenance to keep small crane machinery for cleaning, clean, regularly check the technical state of a small crane machinery, abnormal timely manner, for a small crane loose and offset fastening and adjustment of parts in a timely manner, for some small crane preventive replacement of wearing parts and so on. Four is to educate small crane operator crane proper use and operation of a variety of small construction machinery, reduce and prevent human errors caused by small crane mechanical failure.

ully demonstrates the technological level of domestic production and manufacturing capacity.

Product sales in the domestic construction cranes, truck cranes have been dominant. However, sales data 2006-2009, truck crane market share began to decline from 2007 to 80% in 2009 to 79.5%. With the development of economic construction, transportation, energy, metallurgy, petroleum, chemical, municipal and other areas of production equipment needs of the crane diversified trend, greatly stimulated the crane, crawler cranes and other product development. In 2008, the market share of these two models, respectively, reached the highest value of 16.5% and 5.9%.
TProduct sales in the domestic construction cranes, truck cranes have been dominant. However, sales data 2006-2009, truck crane market share began to decline from 2007 to 80% in 2009 to 79.5%. With the development of economic construction, transportation, energy, metallurgy, petroleum, chemical, municipal and other areas of production equipment needs of the crane diversified trend, greatly stimulated the crane, crawler cranes and other product development. In 2008, the market share of these two models, respectively, reached the highest value of 16.5% and 5.9%.
Tonnage continuously improve product is nearly three years of construction cranes in a major trend, crawler crane is one of the fastest growing types of aircraft. In 2003, sales of crawler crane market is just hundred sets, and products are mainly small and medium-tonnage. Into the "Eleventh Five-Year", the large-scale integration lifting mode become the development direction of large tonnage crawler cranes rapid increase in demand, China's leading enterprises have started construction crane develop large-tonnage products. Beginning in 2009, Zoomlion, Sany, XCMG Fuwa Heavy Industry and launched a kiloton crawler cranes. Currently, XCMG crawler crane 2000t level has also been unveiled, Zoomlion 3200t design and development is underway. Large tonnage crawler cranes, it not only makes our country to rid itself of this type of product is completely dependent on imports of the situation, but also fully demonstrates the technological level of domestic production and manufacturing capacity.
Construction crane industry industrial restructuring in the enterprise development strategy deepening. In 2006, Terex acquired 50% equity interest from long; 2008, Liugong acquisition Bengbu Vibro Engineering Machinery Co., Ltd. Jinzhou Huayuan Fuwa Heavy Machinery M & Co., Ltd., a joint venture Manitowoc Dongyue Heavy Industries and etc., are the development of the enterprise and a significant impact on the industry, and are fully reflected in 2009. In 2009, Anhui Liugong sales revenue grew 72.7%, cranes sales grew 62%; ask dug Heavy brocade truck crane 297 units sold, an increase of 234%; Hoisting Machinery Co., Ltd. Sany Automobile sales jumped cars Crane's first three production enterprises; Jingcheng Heavy Recovery truck crane machine production, when it achieved sales of 83 units of the good results. 2009, XCMG and Zoomlion Mobile Crane Branch 2 industry profits accounted for 95.5% of total profits., crawler crane is one of the fastest growing types of aircraft. In 2003, sales of crawler crane market is just hundred sets, and products are mainly small and medium-tonnage. Into the "Eleventh Five-Year", the large-scale integration lifting mode become the development direction of large Hand Pallet Truck crawler cranes rapid increase in demand, China's leading enterprises have started construction crane develop large-tonnage products. Beginning in 2009, Zoomlion, Sany, XCMG Fuwa Heavy Industry and launched a kiloton crawler cranes. Currently, XCMG crawler crane 2000t level has also been unveiled, Zoomlion 3200t design and development is underway. Large tonnage crawler cranes, it not only makes our country to rid itself of this type of product is completely dependent on imports of the situation, but also fully demonstrates the technological level of domestic production and manufacturing capacity.
Construction crane industry industrial restructuring in the enterprise development strategy deepening. In 2006, Terex acquired 50% equity interest from long; 2008, Liugong acquisition Bengbu Vibro Engineering Machinery Co., Ltd. Jinzhou Huayuan Fuwa Heavy Machinery M & Co., Ltd., a joint venture Manitowoc Dongyue Heavy Industries and etc., are the development of the enterprise and a significant impact on the industry, and are fully reflected in 2009. In 2009, Anhui Liugong sales revenue grew 72.7%, cranes sales grew 62%; ask dug Heavy brocade truck crane 297 units sold, an increase of 234%; Hoisting Machinery Co., Ltd. Sany Automobile sales jumped cars Crane's first three production enterprises; Jingcheng Heavy Recovery truck crane machine production, when it achieved sales of 83 units of the good results. 2009, XCMG and Zoomlion Mobile Crane Branch 2 industry profits accounted for 95.5% of total profits.

an increase of 11.6%; sales of four categories of crane 33,367 units, up 19.2%.

n 2006, sales of four categories of construction cranes (truck cranes, crawler cranes, scissor pallet truck-mounted crane and mobile crane) 17,403 units, up 34.1 percent. 2007 sales reached 24,831 units, up 42.68 percent. 2008 Although affected by the financial crisis, China's four major categories of construction crane sales are still growing, almost equal to 28,000 units, up 12.8 percent; sales revenue of 27.27 billion yuan, an increase of 60.2%, total profit of 2.61 billion yuan, an increase of 46%. 2009 policy of stimulating domestic demand in the country under the guidance of China's construction crane industry bottomed out gradually from the second half. Annual sales revenue reached 31.13 billion yuan, an increase of 14.2%; total profit reached 200 910 million yuan, an increase of 11.6%; sales of four categories of crane 33,367 units, up 19.2%.
Exports from China's construction crane after 2006 has maintained significant growth, while imports declined. In 2008, China's exports is the highest ever recorded crane, the annual export of various cranes and other construction machinery 5008 units, up 58%; total amount of more than 8.2 billion yuan, an increase of 88%, industry sales accounted for 30 %, exports become an important economic growth point. But the world recession in 2009 exports of construction cranes have a significant negative impact on exports fell significantly throughout the year without signs of recovery. 2009 exports fell by 64.8 percent, exports fell 67%.

actual operation starts rotating gantry crane

Rotate work, Zhidongshiling disintegration of rotating worm gear box can be found in the limit torque limiter does not reach its design slip resistance moment when the malfunction.
(1) Analysis: actual Hand stacker starts rotating gantry crane, the brake is very frequent, so that the friction torque limiter plate and the worm gear sets often produce relative movement between the cone and wear, rubbing up and down along the worm taper gradually move closer to the plate. Put the worm, the next junction of cone angle, and its diameter is less than the friction disc small end diameter, and thus in the worm was inside the cone grind annular boss, when pressed by the pressing force generated by the spring on the conical surface and the annular projection plane two parts together to bear. When the annular projection plane withstand clamping force dominates, due to the short arm boss plane rotation and the friction surface is small, so that the friction torque is reduced, and less than the original design moment occurs when these failures.
(2) exclusion method: the disintegration of the rotating worm gear box, remove the worm, the worm within the annular projection on the cone car to make the worm gear sets at the intersection of two cone is a transitional cylindrical surface, and the cylindrical surface small end diameter slightly larger than the diameter of the friction plate.

hinese construction machinery industry's

Wheeled cranes including truck cranes and all terrain cranes, are packed in ordinary or special all-terrain vehicle chassis chassis of a crane, the advantage of mobility, transfers quickly. Chassis performance is equivalent to the total weight of the same vehicle truck, road vehicles comply with the technical requirements, which can be on the road in all kinds of passage. Generally available, and get off two control rooms, operation outstretched legs remain stable. For garages, docks, construction sites and other places of various types of hoist operations, is the largest output, the most widely used type of crane. XCMG wheeled cranes comprehensive industry-leading performance indicators, currently has eight tons to 1,200 tons full range of products. Truck crane sales have been first in the world for eight consecutive years, in 2010 all terrain crane XCMG QAY500 won the China Machinery Industry Science and Technology Progress Award.hinese construction machinery industry's largest and most complete product varieties and series, the most competitive and influential large electric stacker groups, major product categories are: construction cranes, earth moving machinery, mining machinery, road construction and maintenance machinery, pavement and compaction machinery, concrete machinery, piling and non-excavation machinery, railway construction equipment, aerial fire-fighting equipment, heavy trucks and special dedicated vehicles, special chassis, engine, hydraulic and mechanical engineering and other infrastructure components mainframe products, the current XCMG products have been sold to the world 158 countries and regions. 9 host and three critical parts market share in the domestic first one. Category 5 hosts continued export volume and export volume ranks No. 1 domestic industry.

Product Type: HPT-40/50

Product Name: Heavy-duty pallet truck (Load: 4 tons / 5 tons)

Product description:
  Load 4000 kg or 5000 kg, electrics tacker lightweight, advanced hydraulic cylinder, durable and does not leak.
High textured paint the whole car.
Fork with one piece, durable will not bend, and its robust spheroidal graphite cast iron wheel frame, axial rotation
Turn at a self-lubricating effect, high quality PU wheel fork, so that the body starting resistance is small, quiet, walking briskly,
Damage flooring, double wheel design is more suitable for high load and uneven pavement.
Hydraulic system uses a unique circuit and structure of the hydraulic pump even more robust and durable. Seal both solid
Be designed to prevent oil spills and to achieve the effect of completely closed, coupled with the unique buffer design, the user can
Comfortable control of the rate of decline.
Secure and simple joystick operation training exempt trouble with this hand-control design up, positioning, fall
    Functional devices.

Pallet truck - Standard

The system is equipped with a number of hydraulic jacks; international CE safety standards Valves
First, the pressure relief valve: When the load exceeds the set maximum hydraulic system can help the oil output of the bypass flow back into the tank.
Second, the compensation control valve: pressure and flow changes via the control valve automatically granted with the rate of decline in order to protect the body, and cargo safety.
※ Low Bed 65m / m, and bed pads conform sided mechanical Hand Pallet Truck operations, and another double wheel design to overcome high loads and uneven ground dedicated and strong acid, water wheels of rust MC. In their conversation, the United States TIMKEN bearings, President and CEO James Griffith said it would actively participate in the economic and social development in Hunan, but also that its TIMKEN brand in the Chinese market recognition. Vice Governor of Hunan Han Yongwen first welcomed the arrival of the guests, but also that Hunan will Timken Company in Hunan development to create a good environment, I hope to give full play Timken technology, capital, talent, and further increase in Hunan's investment, to achieve mutually beneficial and win-win.

       The Timken Company is the world's third largest manufacturer of bearings. In 2008, the company together with Xiangtan Electric Co., Ltd. joint venture incorporated in Xiangtan Iron Mu Kenxiang electricity (Hunan Timken bearings) Bearing Co., Ltd., focuses on Chinese wind power market MW direct drive wind turbine large iron Timken bearing production and sales.

Pallet truck - Standard

The system is equipped with a number of forklift jacks; international CE safety standards Valves
First, the pressure relief valve: When the load exceeds the set maximum hydraulic system can help the oil output of the bypass flow back into the tank.
Second, the compensation control valve: pressure and flow changes via the control valve automatically granted with the rate of decline in order to protect the body, and cargo safety.
※ Low Bed 65m / m, and bed pads conform sided mechanical handling operations, and another double wheel design to overcome high loads and uneven ground dedicated and strong acid, water wheels of rust MC.ithin a 110-horsepower engine; Dimensions 6810 × 2370 × 2480; tire 8,25-16; Wheelbase 3800; flat ground clearance: 1 m

Topping a half row cab, with the direction of power, five-speed gearbox [high-low]; no spare tire; ladder length 2.2 m 0.6 m wide; This car uses a 100 × 100 GB square steel, 5 mm thick non-slip tread steel; beam 300 mm in width, edge Dimensions 120 mm.

Second, Chaoyang Diesel 110 hp engine; Dimensions 6920 × 2370 × 2480; tire 8,25-16; Wheelbase 4050; flat ground clearance: 1 m; topped half row cab; with the direction of power; 5 speed transmission box [high-low]; no spare tire; ladder length 2.2 m 0.6 m wide; this car uses 110 × 100 in GB square steel, 5 mm thick non-slip tread plate; beam 300 mm wide; side-inch 120 mm.

Pallet truck - Standard

The system is equipped with a number of hydraulic powered palle ttruck; international CE safety standards Valves
First, the pressure relief valve: When the load exceeds the set maximum hydraulic system can help the oil output of the bypass flow back into the tank.
Second, the compensation control valve: pressure and flow changes via the control valve automatically granted with the rate of decline in order to protect the body, and cargo safety.
※ Low Bed 65m / m, and bed pads conform sided mechanical handling operations, and another double wheel design to overcome high loads and uneven ground dedicated and strong acid, water wheels of rust MC. In their conversation, the United States TIMKEN bearings, President and CEO James Griffith said it would actively participate in the economic and social development in Hunan, but also that its TIMKEN brand in the Chinese market recognition. Vice Governor of Hunan Han Yongwen first welcomed the arrival of the guests, but also that Hunan will Timken Company in Hunan development to create a good environment, I hope to give full play Timken technology, capital, talent, and further increase in Hunan's investment, to achieve mutually beneficial and win-win.

       The Timken Company is the world's third largest manufacturer of bearings. In 2008, the company together with Xiangtan Electric Co., Ltd. joint venture incorporated in Xiangtan Iron Mu Kenxiang electricity (Hunan Timken bearings) Bearing Co., Ltd., focuses on Chinese wind power market MW direct drive wind turbine large iron Timken bearing production and sales.

Through the above five force model analysis, we can conclude that

Five forces competitive model with existing industry structure
An industry structure is composed of five competitive forces jointly determined. This five competitive forces are: enter threat threat of substitution, bargaining power customers, suppliers, price negotiation and competition among existing competitors. Let's analyze the existing competitive forces crane industry: First, enter the threats: For the current market, the threshold is low, new entrants into electrics tacker; Second, the threat of substitution: other lifting machinery products due to its structure and use the occasion different, gantry crane is not a threat; Third, customer bargaining power: industry is still in a buyer's market, the customer's bargaining ability; four, supplier bargaining power: Because the client side is often specified parts, supply-side bargaining ability; five industry competitors: competitors include both well-known within the industry nationwide each crane manufacturers, local businesses, including the introduction of foreign technology, as well as direct access to the domestic foreign joint venture enterprise.
Through the above five force model analysis, we can conclude that: In the new round of competition, or will the winning companies should have such qualities: one, the introduction of advanced and mature technology and can quickly industrialization; two , R & D ability, high-tech products

We are talking about the technology gap with international standards

Who should occupy the peak of technology, whoever will in the future competition take place.

We first look farther into the international market. Needless to say, Coney This multinational companies from the Netherlands ran out of the rapid development in recent years, in addition to relying on acquisitions and grow, he has many technical advantages in many domestic enterprises elusive. A typical example, Kony electric hoist, domestic enterprises compared to a lot of difference, our electric hoist is now up to A4, but Kony's products use levels can be stabilized at A4, A5, A6, compact size, durability, work high level, and these characteristics are representative of the international crane technology trends. This technology also represents the development trend of the national energy saving policy bias, compact, durable, high frequency of use, it is the future of industrial products and environmentally friendly energy production combining a trend.

We are talking about the technology gap with international standards, in fact, mainly reflected in the component parts of the level. One is the transmission device, such as a gear processing technology; other is electrically controlled components, such as the drive. This technology gap between the direct impact on product sales, for crane sales, now tend to be customers to specify the component parts, for example, a customer-specified parts must be used or the Siemens Demag, we do not come out the same level of production products, they can only look at foreigners to make money.

The technological level of domestic enterprises is steadily improving, some technology has reached the international standards. Chinese enterprises in the crane design aspect is not backward, accessories sets the level of the motor also. In recent years, some of the leading companies on the one hand to absorb the international advanced technology, on the other Hand Pallet Truck also exploring new methods, new technologies, marketing CAD, CAE and other modern design methods, development of automated, intelligent and information products, the development of special cranes, etc. . Radford Yantai big play style design and manufacture of 20,000 tons shipyard crane multi-point bridge cranes creating maximum weight, maximum span and maximum lifting height of several world records; developed the first domestic heavy lifting one hundred available m crane rails; Weihua Group developed a high energy saving GLQ40 dual-drive AC variable port wheel

of course, did not pay the improved technology.

A set of data shows that four years before the development of the industry showing a low after the high trend. 2005, 2006 and 2007 product sales growth, in January 2007, an increase of lifting Electric pallet jack actually reached 92.31% [3], since 2008, the first three quarters or steady growth, while sales in the fourth quarter year on year decreased by about 30%.

After reading the data to see the reality: the demand is there, companies on the project, the habit has been created today's situation: many Chinese enterprises warlordism, enterprise competition still largely rely on price competition, only **** grenades, no aircraft cannon, of course, did not pay the improved technology.

If you follow our habits of the industry life cycle is divided into introduction, growth, maturity and decline, then the crane industry is in its life cycle period of instability, which is growing. The good news is that data from recent months can predict that in the next longer period of time, lifting equipment production will remain relatively stable around 20% increase momentum, and with the further recovery of upstream and downstream industries , an increase is also expected to be further improved.

Low market concentration brought a new vision and a decline

We can see that the current crane market concentration is very low indeed, simply to be a statistic, 2008, Dalian Heavy gantry cranes output is about 10 million Henan Weihua Group gantry crane output of about 12 billion, they take the lead in the top 6 of the enterprise, in 2008 the output value of gantry cranes of less than 10% of the national GDP, while the top 40 of the enterprise value of the national market and accounted for only 20 %.

the lifting winch: ① Check wire

 bridge cranes appearance: a comprehensive clean appearance, so that no dust, no yellow robe. Check for cracks, open welding.

2), carts, trolleys: ① check and tighten the shaft seat, gear boxes, couplings and shafts, keys are loose; ② Check and adjust the brake wheel clearance to make it uniform, sensitive and reliable.
3), check the bridge crane reducer mainly to see if it leaking. Runtime cabinets abnormal sound, we must open the lid inspection. Generally due to bearing damage or gear backlash is too large, severe tooth wear due to other reasons.
4), the lifting winch: ① Check wire, hook, the blocks are safe and reliable, wear exceeds a predetermined value should be replaced. ② Check and adjust the brakes, to make it safe, sensitive and reliable.
5), overhead crane wire rope inspection. Check the broken wire rope should focus on observation, abrasion, kinks, rust, etc., for some wear and tear, broken wire is more serious but not excessive position, to do a mark in order to focus on tracking the re-examination. Make sure to check the safety rope on the drum stopper is valid, wire rope on the drum plate number plate is pallet jacks and appropriateness.
6), Lubrication: Check all parts of the oil, fuel, lubricating oil required to join or replace.
7), the inspection of the overhead traveling crane pulley. Focus on the bottom wear is excessive and cast iron pulleys for cracks. For institutions pulley overlooking Yang balance wheel, because it does not operate normal conditions, it is easily overlooked. So, be sure to check before installation flexibility of its rotation, otherwise, the installation length of rope around overlooking Yang and tension can not balance wheel to automatically adjust, so that an increase in the height adjustment overlooking Yang rope and operational risk level of difficulty.

large weight metallurgical cranes

Crane manufacturing industry is closely related to urban construction, transportation, energy development and other people's livelihood cause of the industry. In recent years, China's crane industry has achieved rapid development. To bridge gantry crane manufacturing company, for example, to 2008, China's bridge gantry crane has about 450 manufacturing enterprises, employing over 14 million people [1]. If these enterprises are divided into three echelons: big play, too heavy in the first echelon, they are the industry's largest economy enterprises, with national technical center, comprehensive scissor pallet truck, in order to produce high-end products, such as nuclear ring cranes, large weight metallurgical cranes, foundry cranes, large dock cranes, etc.; second tier that includes Weihua Group, including China's top 20 companies, most of them have plant-level technology center, which is the establishment of Weihua Group regional technology center in Shanghai set up a product design and Research Institute, these enterprises are the backbone of the industry, products cover a wide range of high-end products both in bidding, also participated in the competition from cheap generic products; third echelon is the remaining four hundred SMEs, which generally are small, roughly the same product type, and to be priced competitively based market share effective strategies to enable these enterprises generally poor, severely hampered the pace of development. Then, in the vagaries of the market today, a large number of third-tier companies, the fate of which way to go?

Leak repair protection
Bridge crane trolley gear due to vibration, abrasion, pressure, temperature and other factors, the combination of surface sealing parts often appear static leakage. Traditional treatment methods to remove reducer, replacing gaskets or sealant applied, but time-consuming and difficult to ensure the sealing effect, will appear again in the operation of leakage. Contemporary Western countries use more polymer composites leakage field of governance, the most widely Blessed World Blue series. Polymer-free disassembly repair and materials have excellent adhesion, oil resistance and 350% elongation, good to overcome the impact of vibration reducer, repair effect is more effective than traditional methods.
Wear governance
Bridge crane initiative running gear wheels and carts frequently repeated emergency stop and parking will cause reverse gear torque of each axis, vibration increases, could easily lead to leakage. Such problems occur, the traditional method and more to be machined after welding or repair the main brush, but there are some drawbacks both: high thermal stress generated by welding can not be completely eliminated, prone to bend or break; the brush plated by the coating thickness limit is easily peeled off, and the above two methods are metal with metal repair, you can not change the "hard to hard" with the relationship, the combined effect of the force, will cause wear again. New repair method mostly polymer composites based, and the application of more surgery products, which has superior adhesion, Electric pallet jack compressive strength and other performance. Applied Polymer repaired, neither welding thermal stress on the repair thickness is not restricted, while products with metallic materials do not have the concession, can absorb shock and vibration equipment, to avoid the possibility of re-wear and greatly extended equipment component life, save a lot of down time, creating significant economic value.

Broken decade depth integration

Crane rental handling large crane lifting Jiangmen Jiangmen crane rental

First half of 2011 from the sale of 23% of the growth rate to decline 38 pallet jacks over the same period this year, has added more than 10 years of high-speed crane mall interpretation of a lot of roller coaster.

   China Construction Machinery Industry Association, Qi Chun indicated, from 2001 to 2010 this decade, Cranes for sale added 47 times, 130 times added exports. Especially between 2010-2011 in four trillion yuan economic impact scheme, crane work ushered in more than 20% of the big swing. However, from the boiling suddenly fell into the freezing point, Cranes go from here?

   Coincides with the Chinese construction machinery magazine's "Global Crane Summit" on September 26 held in Beijing, the meeting, the reporter to know crane manufacturers worldwide leader in business-to-work and the mainstream user trend concept.

  Broken decade depth integration

In 2012 the global crane Summit released list, XCMG ranks first. Decade, domestic crane mall in the world to emerge, I recall growing up process, Xugong vice president, general manager of Xuzhou Heavy luchuan that this is leading the work of mainstream enterprise promotion, end technology to break the golden years.

   From 2000 to 2005, the world's cranes working in more than 25% annual compound added of high-speed growth, during which China contributed the largest increase, truck crane sales doubled from 1999 initially added in 2003 to break the 10,000 units. Following 70 years of the last century, the United States mid-annual 7500 Taiwan, Japan in 1980 after record 8000 production, China has become the world's largest crane producer.

    In the meantime, the end of the two key corporate mainstream break, one planned production capacity to break 10,000 units, two are different and the habits of Chinese demand hundred-ton crane technology less, occupied the whole earth crane center technology, high low-end to form a cover the Chinese technology portal, which is common key, it establishes a Chinese crane unique cost advantage.

compared to reach the optimal combination, maximum limit satisfactory system function needs

Nevertheless, the authors think that the torque limiter on the mall at that time there is still a lot to improve local. Specifically there are two aspects. First, the torque limiter to improve primary electrics tacker such as sensors, photoelectric encoder and line plug-ins, mostly due to one component manufacturers outsourcing, outsourcing products, because since the product quality varies greatly, simply because some shortages affecting the entire system functions . Solution to the problem is the manufacturers of the primary elements carefully selection, repeated experiments, compared to reach the optimal combination, maximum limit satisfactory system function needs; Second, some manufacturers component sensing devices depict it has not done for a long time solid, such as the appearance of the flash when testing very precise, 2-3 months after rendering errors often lead to torque limiter which the whole system failure, affecting the system robustness.

Torque limiter on the mall was complicated varieties, the authors think that in the selection of the torque limiter, in addition to the alignment of the unit crane types of characteristics,

How to use the crane torque limiter

Posted by: admin Read 289 times Published: October 18, 2012 Print This Page
Crane rental handling large crane Scissor lift Jiangmen Jiangmen crane rental
Lifting equipment is more dangerous construction site equipment, once the attack incidents, often forming Qunsiqunshang severe consequences. Thus lifting equipment safety issues have always been associated with some of the attention. Crane torque limiter is the most important safety equipment. Practice has proved that the correct selection and protection of cranes torque limiter, you can cut up to eradicate super pieces of lifting equipment due to overloading caused serious incidents responsibility to ensure the safe operation of lifting equipment.
China's self-description, history of producing torque limiter is not long before, once in 1990, mostly mechanical torque limiter; since unsystematic, and its robustness throughout the poor. Since 1990, National Bureau of Technical Supervision issued a "crane torque limiter safety and technical standards," since this device description, judgment and inspection have a more clear criteria, standards and methods.
Torque limiter in recent years, to carry out faster, show the following characteristics: Host integration, intelligence increasingly high degree; flashed selection of multiple windows, large screen; latest products increased deployment of "black box" function can record real-time operating status of cranes; based remote monitoring function of Things, real-time remote monitoring of the crane operation condition data; appearance even more compact; equipment adjustment simple and reliable product with a big ups and downs of promotion.
Shopping malls in the country to ask for special Yichang micro electronic equipment limited liability company torque limiter product which WTL-A220 tower crane remote monitoring torque limiter experienced summarizes the various functions described above, and the cast at the mall into practical use after the reaction has been excellent.

end technology to break the golden years.

In 2012 the global crane Summit released list, XCMG ranks first. Decade, domestic crane mall in the world to emerge, I recall growing up process, Xugong vice president, general manager of Xuzhou Heavy luchuan that this is leading the work of mainstream enterprise promotion, end technology to break the golden years.

  From 2000 to 2005, the world's cranes working in more than 25% annual compound added of high-speed growth, during which China contributed the largest increase, truck crane sales doubled from 1999 initially added in 2003 to break the 10,000 units. Following 70 years of the last century, the United States mid-annual 7500 Taiwan, Japan in 1980 after record 8000 production, China has become the world's largest crane producer.

   In the meantime, the electric stacker of the two key corporate mainstream break, one planned production capacity to break 10,000 units, two are different and the habits of Chinese demand hundred-ton crane technology less, occupied the whole earth crane center technology, high low-end to form a cover The Chinese technology portal, which is common key, it establishes a Chinese crane unique cost advantage.

 2005 to 2010, showed significant changes in micro-environment: Countries increase infrastructure investment, power and other major construction projects led to the lifting process transformation, the end of this process, the three breaking mainstream enterprise: First, the world of speed, the second is the crane Product structure and category further subdivided spectrum spans from 5 tons to 2,000 tons cover, vehicle type, car type, all the earth, crawler, off-road tire, etc. to get commenced; Third, large-scale. China's largest tonnage of 200 tons crane before history was broken, from the end of the world Cranes hundred-ton to kiloton crossed.

  2010-2012, micro-economic environment remains tight, but the supply of talent added nearly twice the one hand to deal with a variety of mainstream enterprise competition pressures, but also caught with regional structural changes in the strategic plan on the end of the 2nd World of take-off, in product and technology program to quickly seize large tonnage highs, Chinese enterprises once again demonstrated the advantage, one by one, "the world" is being, or is about to be born, to enhance the user with a value as the theme of a new generation technological innovation is emerging.

admin Read 374 times Published: October 15, 2012 Print This Page

Shopping from the boiling suddenly plunged into freezing Cranes go

Posted by: admin Read 374 times Published: October 15, 2012 Print This Page

Crane rental handling large crane lifting Jiangmen Jiangmen crane rental

First Hand Pallet Truck of 2011 from the sale of 23% of the growth rate to decline 38 percent over the same period this year, has added more than 10 years of high-speed crane mall interpretation of a lot of roller coaster.

   China Construction Machinery Industry Association, Qi Chun indicated, from 2001 to 2010 this decade, Cranes for sale added 47 times, 130 times added exports. Especially between 2010-2011 in four trillion yuan economic impact scheme, crane work ushered in more than 20% of the big swing. However, from the boiling suddenly fell into the freezing point, Cranes go from here?

   Coincides with the Chinese construction machinery magazine's "Global Crane Summit" on September 26 held in Beijing, the meeting, the reporter to know crane manufacturers worldwide leader in business-to-work and the mainstream user trend concept.

  Broken decade depth integration

When we encounter such a problem

In the first case: Ceramic tiles are not completely loose. When we encounter such a problem, deal with the difficulty lies in removing ceramic tiles, it may cause damage to the tile. There might involve broken tile replacement, if not keep spare tiles, then it would be with you then tile seller implementation is able to find the same color number (the same type of product, if not the same production batch, then, its color may be differences) of the product, re-fill some of the same color number tiles. Tile broke down from the middle, using crowbars, will tile corrupted from the middle to four weeks Carefully pry, this treatment will not cause damage to the surrounding tile, the tile to be removed later, then follow the way to deal can be.

Case 2: The tile is completely loose. Faced with this situation, the relatively simple processing method. First bulging Carefully remove ceramic tiles, and then the back and floor tiles grassroots portion of dust and impurities to clean, use a dedicated tile adhesive paste can. Because it is a brick, its resistance to stress there will be certain requirements, in the back of the stick when the tile tile adhesive can be spread evenly in the brick on the back, try to avoid the tile hollowing (Of course, the best way to Hand pallet jacks or use of cement mortar paste as well.)

And that, when we face both cases, when, and how to properly handle ceramic tiles from the drum method.

Processing of ceramic tiles from the drum of the two methods

Core Tip: Ceramic tiles from the drum is generally divided into two situations: First, do not completely loose ceramic tiles, ceramic tiles are two completely loose. We first need to determine is whether or not fully or completely loose loose both cases, the following will be an introduction to these two cases: the first case: Ceramic tile does not completely loose. When we encounter such a problem, deal with the difficulty lies in removing ceramic tile
Ceramic tiles from the drum is generally divided into two situations: First, ceramic tiles are not completely loose, two ceramic tiles completely loose. We first need to determine is whether or not fully or completely loose loose two casesTile Hand pallet jacks is largely caused by improper construction, when the paving tiles, mortar cement mortar thin adhesive layer, Stones cement paste has dried, the back plate is not Ex pollutants are likely other reasons cause tile hollowing. Therefore, prevention of hollowing occur in the construction needs to be done, the adhesive layer of mortar to dry to landing spread prevail. Stones cement paste of water-cement ratio of 1:2 (volume ratio) is strictly prohibited flour with cement paving. Conservation period should frame plate, prohibit the walking surface.

hollowing causes and preventive measures

Tile hollowing is largely caused by improper construction, when the paving tiles, mortar cement mortar thin adhesive layer, Stones cement paste has dried, the back plate is not Ex pollutants are likely other reasons cause tile hollowing. Therefore, prevention of hollowing occur in the construction needs to be done, the adhesive layer of mortar to dry to landing spread prevail. Stones cement paste of water-cement ratio of 1:2 (volume ratio) is strictly prohibited flour with cement paving. Conservation period should frame plate, prohibit the walking surface.
 tile scissor pallet truck rate standard
Brick hollowing phenomenon controlled within 3%, mainly on the channel can not appear hollowing; while hollowing wall tiles need to be controlled within 5%.
tile hollowing process
If the single tiles hollowing exceeds the standard, you can ask the brick paving workers pry resurfacing. Method is to remove the hollowing tiles, available sucker suck, straight hanging out, and then according to specifications paving.
And if more than 1/3 of the pavement area there hollowing, you need to take the entire surface of tile all Qiaodiao resurfacing. In general, this damage caused by the construction side, should be borne by the construction side of the broken tile materials and labor costs

the vertical degree detection

Bathroom and kitchen walls are usually covered with tiles, then you need to check whether the smooth vertical and horizontal wall. We first look at how to check the verticality of the facade tiles. 2M can check whether on foot vertical, but not precise measurement biases, and the use of detection 2M vertical ruler can detect deviations.

The vertical detection test surface abutting the left foot, and then stop itself until the pointer swings after reading the scale pointer value, the value that is measured surface vertical deviation, each cell is 1mm. Vertical facade tiles are generally within 3mm.

2, flatness testing

Detection tile flatness, you can use the vertical ruler detection test can also be added with 2M on foot wedge feeler testing. Detected using the latter method, it will be measured by the foot side of the abutting surface, with its wedge-shaped gap size feeler testing.

To be detected at three points each, the Hand Pallet Truck point and in its place one point 45 ° around the intersection, whichever is the average of three points. Tile flatness error should not exceed 2 mm, height adjacent tiles shall not exceed 0.5 mm.

3, Yang angle squareness checking

Tiling walls, there is a yin and yang angle, need to detect all the yin and yang, yin and yang Square Founder degree angle, angle of yin and yang in accordance with national requirements should not deviate more than 3 mm.

Five kinds of tiling methods deal with how to prevent the hollowing phenomenon

In addition to looking to buy tiles, paving also very important. There are five ways paving tiles, each method is applicable to different effects collage. We must remember that right after paving tile for acceptance, to prevent the emergence of such phenomena are hollowing future residence stay hidden. So five kinds of paving tiles which five kinds of law do? To how the acceptance on the tile it?

Tile paving method

A, horizontal or vertical shop shop

Laying points: the way to the wall parallel to the paving. Zhuanfeng alignment without leaving seam, both with and close to the color of brick pointing grouts deal that looks fresh, clean and tidy.

Suitable Type: usually selected tiles, Hand pallet trucks for modern minimalist style.

Tip: rectangular tile or vertical cross-shop shop, make the whole space seem spacious.

Two, modular paving

Laying points: different sizes, styles and colors of tiles, in accordance with certain combinations for paving.

Suitable Type: Suitable for European style and rustic, paving way richer. Can usually be slightly darker than the color of the main tile laying marble or tile, on the ground surrounded by about 15 cm of the sides, paving the effect feels more refined timber, and better express a space atmosphere.

Tip: modular paving ancillary products as well wave wire, ground parquet and so on. Wave wire usually with dark tiles, antique tiles also have a special matching wave wire, mainly used in the ground around the entrance hallway or other places. Ground flower line, corner flower with ceramic tile floor from the processing of decorative painting, mainly used in the lobby, coffee table, or the table below.

Lift in the production life of the role and significance

     Hand pallet jacks lifts, whether in industrial production is still in our daily lives has an important role. Interests brought us very much. Features lift is very much in our lives we have a lot of business building will be used in elevators, lifts or less the same as the performance of the elevator, we use the lift when you can lift for their own needs on the set. See the lift can be a role for us is quite large.
      Continue to increase our productivity, life continues to improve, the demand for it continues to lift the increase in life in every corner of the application of the lift will give us an objective interests.
     Hydraulic lifts in our production application has been very common, and in our production plays an important role, especially cargo altitude operation.
Now that the economy continues to develop, adapt to the needs of society, productivity continued to increase, and now high-altitude operation is also more and more, so we conducted aerial lifts in operation time gives us an important role.
     Hydraulic lift is up and down, and it can provide us with a safe and stable platform. Our aerial work when you can give us the security to provide protection.
     Not only in the production of hydraulic lift has an important role in our life applications is also very important, and very popular. In the hotels, guesthouses, public leisure and entertainment, theater, etc. We all know that clean and comfortable is the first, so keep it clean is a must. Here clean lifts, lighting maintenance for repair, equipment installation commissioning maintenance is very important.

Maintenance and repair of hydraulic lifts

Scissor lift  developments are in a peak state, because most manufacturers or individuals in order to improve the utilization of space, more options multistory building, which also requires a device to facilitate the drop down to enhance cargo. Therefore developed a high capacity lift to aid the production and transport of goods. Construction elevator that is safe and has a large load capacity, but also in the use and maintenance companies are more convenient, makes this particular industry has faster development.
1 hydraulic oil if found dim tacky or foreign matter, should be replaced to maximize job ahead
(2) Remove and disassemble the lift down valve, the plunger blowing with compressed air, and then loaded refitted.
3 Check all hydraulic pipes and fittings. Pipeline not have broken, can not have loose joints, it is necessary to tighten all fittings.
Monthly maintenance lifting platform
4 parts are filling some of the oil, extending the lift bearing life. Check the hydraulic lift wheel, intermediate shafts and bearings, cylinder pin and bearing, boom hinge shaft and bearings for wear.
5 between any part of the hydraulic system, it is necessary first of all relief to avoid pressure oil spray, lift table Passed decline.
6 shall be arbitrarily adjusted relief valve. Hydraulic lift system for each component are under pressure in the demarcation work. Any adjustment relief valve, the hydraulic system may cause abnormal operation.
7 below the lift working platform inspection, necessary Diaozhu support lift work platform, to prevent lift Passed down.
8 non-professional staff shall not disassemble appliances to prevent electric shock or incorrect connections.
9 has often check the bolts, switches, safety devices are loosening and failure.
  Lifts in use should pay attention to, must be placed on a solid flat surface to prevent tipping when working. Press the "up" or "down" button to make the table movements. If the table does not move, should immediately be shut down for inspection. Found that electric lift operating pressure is too high or abnormal sound, immediately shut down inspection, in order to avoid mechanical devastated; regular monthly checks pivot pin work status, such as found axle pin, screw loose, must be locked to prevent the axle pin off causing the accident.
  Maintenance and repair needs is a long and patient work, so to reduced failure rate and increase the maximum safety benefit rate

Fixed the safe use of lifts

     Many lifts, close to the fence at the door of the cage, the cage bottom beams to suppress a run down through the commutation driven pulley rope fence doors open upward, so it is easy for people around outside the fence damage. Various parts of the rope rope should use a reliable connection. First it must be able to withstand the impact load lift, and play a role of a buffer. And now a lot of the site, although some settings, but not enough to play a buffer role, there is no buffer on the site, which is extremely wrong approach, attention to be checked using the unit, do not underestimate this last line of defense.
Fixed Hand pallet trucks, lifts, etc. are widely used in the construction site, where construction work more severe environmental conditions, cement, mortar, dust is inevitable, this will lead to a fixed gear and rack lift mutual grinding teeth are sharpened still in use, should pay attention to.
We should all know that the tooth should be like a cantilever beam, when worn to a certain size, you must replace the rack. However the site a lot of "old-fashioned" gears, rack lifts still extended service use, for everyone's safety, must be replaced with new parts.
     These are safe and healthy for the majority of users think that we should not ignore, please pay attention!

How do you like to buy a lift

     With the development of science and technology in society now, more and more extensive use of aluminum lift, whether it is architecture, civil engineering, and people's daily lives are inseparable from the hydraulic lifting machinery, lifting machinery companies like bamboo shoots after rain along the PLC in the major industrial city, but lifting machinery industry is still a blast abnormalities, short supply, it can be seen from the side, and now brave social development, promote the development of the whole industry, and now many users are worried about how to choose a good aluminum machinery it? This problem has become an inevitable topic. Let me tell you about:
A: Optional lifting machinery, we must first do market research, and determining to purchase this company's size and its degree of credibility. This is the first major point which I believe most users can do. There are now many companies talk the price is very low, we think about why little companies can drop so low that some companies can not do? Let users tend to ignore the issue price of that. This is often relatively short life of the machine and the risk coefficient. Therefore, as a buyer does not covet a little small cheap prices and lead to greater regret.
Two: an integrated electric pallet trucks information, select better cost-lifting machinery, from its technical parameters as well as we can on the user's actual situation to choose, usually aluminum lifting machinery there are many, including (car lift, fixed lift, hydraulic lifting platform, scissor lift, self-propelled lifts, etc.) for each of the technical parameters and uses are slightly different, but there are many features that have similarities, so as a customer you want with the purpose of the purchase, ie you buy lift machinery specifically what to do, and which lifting machinery to meet your needs and uses much.
Three: Finally, after the arrival of equipment, acceptance unpacking instructions on the attachment to check for consistency, equipment and accessories for damage, defects, etc., and make unpacking inspection records.

How correct operation manual forklif

As the industry continues to develop, many occasions need to apply to forklift products, machinery and equipment can be achieved using this cargo lift, short-distance transportation and so on. In some car handling workshop, warehouse dock will also apply to manual forklift truck products currently on the market quite a lot of different forklift products during operation there will be some differences. We often applied to Connaught forklift, so a lot of people know how to safely use Connaught forklift, today we will talk a manual forklift proper operation.
Manual forklift jacks contains batteries, as this mobile device, battery protection must do the work, because if the battery storage capacity decreased, the truck will affect the use of time, frequent charging will affect the work efficiency, but also in the course of their work if not electricity, may also cause accidents. So be sure to pay attention to before using a forklift charged, each charging time must accurately grasp and can not be overcharged.
During operation, must pay attention to the downhill, uneven ground movement method, forklifts move short distances can be achieved in this process should try to ensure that the balance of the truck. In the downhill when we must pay attention to the truck control, in order to prevent runaway truck, you need to pay attention to the state of the truck brake control, minimizing truck bumps vibration.
In the process of moving the vehicle in strict accordance with operation, not be able to move forward, backward brake switch as turning to so easily lead to failure of the truck switch occurs. In turn, it should be carried out strictly in accordance with the procedure turn, not the easy way, companies in the truck driver training, it should enhance their safety awareness.

How to maintain good hand truck

Hand pallet jacks is a relatively conventional truck, this truck a long history of use to people's life and work to bring a lot of benefits. While it appeared on the market a new type of electric vans such truck, hand truck, but the market share is still relatively large, mainly because of hand truck performance is good, we all rely on it. However, no matter how manual handling performance of the car is good, we usually pay no attention to it if the maintenance, it still affects the use of hand truck. So, hand truck should be how to maintain it? Here we take a look at:
1 To carry out routine inspection and maintenance: Hand truck routine maintenance is necessary, the maintenance time, we should focus check truck wheels and core axis, see there is no exception. Wait until the truck after use, and then remove the cargo van, put the fork down to the lowest position.

(2) to give the hand truck fueling and exhaust: hand truck during use is not the lack of oil, so we check every month the oil truck was found to be less time to add. Also, pay attention to the hand truck exhaust, the exhaust when put finger to pull down position, moving up and down repeatedly.
3 to hand truck to increase oil: Basically, in the factory, all bearing lubricants are added, these lubricants can ensure the normal use of hand truck. We only intermittently in the month, when a thorough check, all the moving parts are added oil on it.
These are the maintenance manual handling car needs attention, hand truck maintenance and maintenance of electric stacker, like, must carefully and hand truck so as to ensure the use of performance.

can improve the bearing capacity and rotation accuracy

Preload is the bearing assembly to the inner or outer ring an axial force to remove the needle bearing clearance, and to move the body and the inner and outer contacts generated at the beginning of deformation. Preload can improve the working condition of the bearing stiffness and rotational accuracy, load bearing large, rotating high precision bearings, mostly in the absence of even a small amount of clearance over the work of state interference, in which case it required in the assembly, the electric pallet trucks preload. Clearance and preload adjustment are usually seen by the inner ring relative axial displacement of appropriate methods to complete. From the above process is not difficult to learn concepts, through to move the bearing clearance adjustment, can improve the bearing capacity and rotation accuracy, progressive bearing life. But at the same time make the bearing frictions, fever increases, so the clearance or preload adjustment when necessary to ensure good lubrication and heat dissipation. If improperly adjusted or poor lubrication, it will in turn cause increased bearing wear, reduced life expectancy.

If you discover any problems

Hand truck than during our traditional truck to be more compact, is also more flexible, better able to use the indoor and cargo between vehicles, there is a better use of advantage. Use the correct way to operate a manual pallet trucks, allow us to transport goods in the way more effort, so that the efficiency of cargo handling faster. Here we introduce a specific hand truck the most widely used hand pallet trucks safe method of operation.
When using hand truck, be sure to secure it with surveillance. To see the van first hydraulic cylinder is faulty, then view the truck wheels is flexible, whether the above obstructions. If you discover any problems, the problem must first be ruled out before using Hand Pallet Truck.
Using manual handling car, you need the goods stacked on a pallet truck, ensure that does not occur during the transport of cargo spilled phenomenon. Hand truck cargo hold, let the fork completely submerged shelf inside, and hold up to the appropriate height.
In the manual handling of cargo transportation vehicle, you need to be manually transferred back to the fork truck's original height to begin unloading, or manual handling car cargo tray is not fully forward, the cargo still with the movement of the hand truck mobile, there are security risks.

with the traditional internal combustion forklifts somewhat similar.

I believe many people have heard of electric stacker bar, Electric pallet truck transport and warehousing and transportation logistics indispensable as a means of transport. The use of electric forklift trucks, greatly improved work efficiency related industries, widely recognized by the user. As a result, electric stacker with widely used. Currently on the market Electric Stacker more and more types, here we give you a brief introduction;
1 Pallet Stacker: This Stacker is the bottom of the leg, suitable for use in GB single tray or did not use the occasion of the tray, use this stacker can help cargo handling and running quickly.
2 Counterbalanced Stacker: This is not the end in front stacker leg stacker fork is properly forward or backward, as this will ensure goods level. Balance Stacker trial was fairly broad, with the traditional internal combustion forklifts somewhat similar.

3 riot Stacker: This Stacker is a special stacker, she has a compulsory production license requirements, can be used in some security requirements are relatively high place. Riot Stacker biggest feature is its relatively high level of anti-riot, you can use some special industries.
4 lateral stacker: lateral stacker fork is mounted on the side, it's loading and unloading work is mainly carried out at the side, can be used in a number of relatively small aisle occasions.
Above we tell you about the current market, the more common types stacker, stacker type of course is far more than these, various electric stacker stacking process and unloading process is different, everyone in the election electric Stacker purchase when you can choose according to actual usage.

Electric Stacker common classification introduced

I believe many people have heard of electric stacker bar, electric stacker transport and warehousing and transportation logistics indispensable as a means of transport. The use of electric forklift trucks, greatly improved work efficiency related industries, widely recognized by the user. As a result, electric stacker with widely used. Currently on the market Electric Hand pallet trucks more and more types, here we give you a brief introduction;
1 Pallet Stacker: This Stacker is the bottom of the leg, suitable for use in GB single tray or did not use the occasion of the tray, use this stacker can help cargo handling and running quickly.
2 Counterbalanced Stacker: This is not the end in front stacker leg stacker fork is properly forward or backward, as this will ensure goods level. Balance Stacker trial was fairly broad, with the traditional internal combustion forklifts somewhat similar.

3 riot Stacker: This Stacker is a special stacker, she has a compulsory production license requirements, can be used in some security requirements are relatively high place. Riot Stacker biggest feature is its relatively high level of anti-riot, you can use some special industries.
4 lateral stacker: lateral stacker fork is mounted on the side, it's loading and unloading work is mainly carried out at the side, can be used in a number of relatively small aisle occasions.
Above we tell you about the current market, the more common types stacker, stacker type of course is far more than these, various electric stacker stacking process and unloading process is different, everyone in the election electric Stacker purchase when you can choose according to actual usage.

Manual handling car maintenance of common sense

Hand Pallet Truckis now widely used in supermarkets, factories, warehouses, freight logistics cargo handling. The use of hand truck advantage is obvious, with the help of hand truck, cargo handling speed has been greatly improved. But the hand truck in the use of the process, but also need to pay attention to maintenance. Here to tell you about a simple hand truck maintenance of common sense.
Hand truck every day to carry large loads, the intensity of the work is still very large, the way in the delivery of goods will inevitably be subject to some bumps, resulting in various parts of the different degrees of damage. So, hand truck needs to do regular inspection and maintenance, if found to have parts wear very serious, the need for timely replaced with new parts.
Although each hand truck in the factory have done a lubrication and maintenance, but in use for some time after the oil lubrication effect will be weakened, which requires re-filling oil in various parts, especially the hand truck activity areas, need to focus on lubrication. Fill the oil hand truck use will be more flexible and easier.
Although the hand truck operation is relatively simple, but after handling goods are relatively heavy, hand truck to do so by a larger effort and have operational experience of people to operate, particularly to prevent children playing with hand truck and avoid unnecessary injuries and truck damage.

Connaught forklift drivers should know what safety knowledge

Connaught forklift want to ensure safe use of the truck drivers need to raise the requirements, companies can often carry some professional training to improve their driving skills, establish a forklift operator safety awareness, can effectively reduce accidents.
Each time you use the truck at all times Connaught note maximum weight and load limit, each a mechanical device has a maximum load limit of the forklift to withstand the maximum loading and unloading cargo weight is the maximum weight. Production design load limit is set when the truck Connaught good, the loading of the goods can only be less than or equal to the load limit must not be exceeded. When loading cargo too heavy, easily lead to forklift out of balance, causing accidents.
Every Hand pallet trucks driver using Connaught should also know how to ensure the stability of the truck, stability in addition to the time of purchase, choose the quality, performance and stability of Connaught forklift products, it also requires the safe use of Connaught forklift. If the driver's operating skills mature enough, then driving the truck in some special ground, but also to ensure its stability, prevent rollover, skidding accidents.
Jitter occurs when the truck, the driver should be vigilant, and if the door frame jitter, there may be support shaft loose door frame, there may be too severe roller wear. This time the driver needs to rely on many years of work experience to judge, in which abnormal jitter, we also need to improve security awareness, early detection of problems, and to be addressed.