easy to break suddenly the whole root

With multiple or multi-strand twisted flexible thin wire rope, wire rope is twisted into shares by the multi-layer, then the cord as the center, by a number of strands twisted into a spiral around the rope. In material handling machinery for improved traction, tensioning and load-bearing purposes. Rope, high strength, light weight, smooth, easy to break suddenly the whole root, reliable work.
Structure
⑴ wire
Play a role in load bearing rope, the performance is mainly determined by the wire. Carbon steel or alloy steel wire is cold-drawn or cold-formed by a circular (or shaped) wire, high rider pallet truck and toughness, and according to different environmental conditions for surface treatment of steel.
⑵ rope core
The main function of the core rope to increase the flexibility and toughness of steel wire rope, wire lubrication, reduce hand pallet truck, high rope life. Common types include organic fiber cord (such as hemp, cotton), synthetic fibers, asbestos core (high temperatures) or a soft metal and other materials.
Hierarchical classification
Brief introduction
Rope twist around at the level can be divided into single-winding rope, double and triple roping roping.
Single-roping
By a number of thin wire around a metal core twist from the system, flexibility is poor, easy to wear when bent repeatedly broken, mainly for not exercising taut cable.
Dual roping
Shares by the twisted steel wire rope core and then surrounded by a twisted rope shares. Common core of hemp rope core, high-temperature operation is appropriate asbestos-core or soft steel wire twisted metal core. Dipping the cord in front rope lubricant, wire each other to reduce the damage caused by friction. Dual flexible rope around better, making simple and most widely used.

These are caused by the crane hydraulic system contamination

 Truck Crane hydraulic system contamination
At present, some advanced industrial countries, the company survey showed that 70% of hydraulic mechanical failure from the hydraulic system, hydraulic system so ugly that at least 75% is due to dirty hydraulic oil caused. Domestic crane hydraulic system contamination due to failures and accidents also extremely common. At present, some advanced industrial countries, the company survey showed that 70% of hydraulic mechanical failure from the electric pallet trucks system, hydraulic system so ugly that at least 75% is due to dirty hydraulic oil caused. Domestic crane hand pallet truck system contamination due to failures and accidents also extremely common. Such as hydraulic truck crane hoisting mechanism of the variable motor oil due to blockage of the particulate matter control ports and hinder variables, and even failure; larger than hydraulic truck crane slewing mechanism because of the oil particles clogging unidirectional rotary damping valve can not be executed instruction; pumps, cylinders, motors, locks, valves, early failure due to wear particles. These are caused by the crane hydraulic system contamination, and not unjustly quality hydraulic and hydraulic components and repair underwater.
Hydraulic crane hydraulic system is a core component. Crane operation outrigger cylinder and cylinder luffing all want to support the whole weight and load. Slewing jib crane telescopic and institutions such as motivation to work also depends on the hydraulic system. Oil pollution levels and cleanliness of the hydraulic system, the use of a direct impact on the reliability and service life of the crane.

Crane rental handling large crane lifting Jiangmen Jiangmen crane rental

Hoisting crane mall is an important effort to promote
Posted by: admin Read 320 times Published: October 8, 2012 Print This Page
Crane rental handling large crane lifting Jiangmen Jiangmen crane rental
Global crane hoisting hundred summit and China held in Beijing. China Construction Machinery Industry Association, Qi Chun at the meeting showed that China as the world's cranes career major malls, shopping centers toward the future, has become the focus of global enterprises to pay attention, to promote Chinese crane electric pallet jack career is an important effort undertaken mall.
Qi Chun showed that in 2012 China's macro economy continued to decline, construction machinery along with career growth also presents a rare slowdown. Shopping malls increased demand weakness, occupational decompose further increase competition has become even more intense, as construction machinery industry is an important part of the crane occupation facing important issues. China as the world's cranes career major malls, shopping centers toward the future, has become the focus of global corporate attention.
Qi Chun showed that although the internal environment Qianan, but in 2012 the mall overseas to pallet stacker beyond nature has gained increased to hoist occupation, for example, from 2001 to 2010 this decade, employment income increased by 47.09 times, exports increased 130.05 times. Profession to the world is not only consistent, it is a common career move. Although there are still many needs of the current deal, but the results obtained are also well known, the subsequent occupation of foreign enterprises should further learning, and constantly promoted concept of operations, operational quality, skills development can, try to do better the occupation, Occupation is to promote Chinese crane hoisting mall undertaken important effort.

Domestic construction crane on the market

KBK flexible light combined system including KBK-D monorail crane, KBK-LD single beam, KBK-LS double girder, KBK-LSS telescopic beam, KBK-LM stacker and other various types of hand pallet truck equipment, lifting weight of 0.125t -1t adapt to a very wide range, especially for modern production conveyor line, which features are summarized below:
1, good reliability, high stability KBK light crane components of the system are all standard modules can guarantee high-volume, high-quality production, which system is very reliable; system module is the mainstay of three sizes of rolled profiles, strength, stiffness, light weight, to ensure stability of the system.
2, KBK system adaptable plant each station according to the needs, design and installation flexibility. Transported from the point to multi-point high accuracy, and more automated conveyor line beat, can be freely combined together. The plant can be used for new designs can also be used to modify or extend the old system.
3, easy to install, cost-effective KBK system installation is very convenient. KBK profiles counter balance stackers various standard modules can be used only with bolts, saving factory space and area, thereby reducing energy consumption, improve enterprise efficiency. System can be operated manually or can achieve automatic and semi-automatic operation.And total sales of Shijiazhuang Coal Mining Machinery crane 2370, accounting for the types of products 70.04% of total sales, Xu grew 62.4% over year.
Domestic construction crane on the market, cranes (including all terrain crane) is still the industry's leading products. January to September 2010, truck crane sales 27,572 units, up 35.6%; total exports of 879 units, an increase of 62.1%. Which ,3-June for the automotive crane sales season, the average monthly sales of 3,500 units or more, the peak appeared in March, sales reached 4,429 units; January largest growth rate, an increase of 158.3%; while sales in February and September appeared fell. From the product structure, small and medium-tonnage truck crane sales increased. 1344 crawler crane sales units, up 61.93 percent, close to the 2008 record high. Sales of products to 50t, 70t, 80t, 100t, 150t and 250t crawler crane mainly small and medium level. Truck crane half sales 4796 units, up 38.53 percent.

To ensure the accuracy of the roof moves

Retractable roof comprises a total of nine base plate is divided into two parts: one is 4 , and the other part of the 5 . On either side of each plate are fixed with angled steel . There are 10 frames across 77 meters of the stadium . Each steel wheels supported by a set of ports can be installed in the center court along both sides of the Shop Lifter move . Ready to close the retractable roof , the northernmost part of the stadium to keep the folded state , parked in another part of the southern end . To ensure the accuracy of the roof moves , you need to install a high-precision electronic actuators, servo motor and rocker synthesis system . This system will separate the steel , while steel between the upper and the steel parts of substantially begin until the two parts of the top center of the pitch joints combined stacked flat . Steel is installed on the bottom of the hinge a number of similar components. Schaeffler FAG spherical roller bearings assembled in these hinge . These bearings due to friction is small, and can be carried out right kind of compensation is selected. These bearings are grease lubricated through high-performance , during use, requires minimal maintenance

reduce friction, high rope life

⑴ wire
Play a role in load electric order picker rope, the performance is mainly determined by the wire. Carbon steel or alloy steel wire is cold-drawn or cold-formed by a circular (or shaped) wire, high strength and toughness, and according to different environmental conditions for surface treatment of steel.
⑵ rope core
The main function of the core rope to increase the flexibility and toughness of steel wire rope, wire lubrication, reduce friction, high rope life. Common types include organic fiber cord (such as hemp, cotton), forklift jacks fibers, asbestos core (high temperatures) or a soft metal and other materials.
Hierarchical classification
Brief introduction
Rope twist around at the level can be divided into single-winding rope, double and triple roping roping.
Single-roping
By a number of thin wire around a metal core twist from the system, flexibility is poor, easy to wear when bent repeatedly broken, mainly for not exercising taut cable.
Dual roping
Shares by the twisted steel wire rope core and then surrounded by a twisted rope shares. Common core of hemp rope core, high-temperature operation is appropriate asbestos-core or soft steel wire twisted metal core. Dipping the cord in front rope lubricant, wire each other to reduce the damage caused by friction. Dual flexible rope around better, making simple and most widely used.

Wheeled crane maintenance

This paper focuses on wheeled crane maintenance, cleaning and lubrication is divided into two parts
 Using clean, wipe each other method to clear up various traces of oil and dirt on the machine, remove the dust on the machine and its components. Cleaning of the hydraulic system is particularly important, foreign matter is the main hydraulic system failure original Gang. Ensure that the gas in the pneumatic system clean and dry to prevent pipe corrosion, improve system reliability.
Wheeled cranes on a variety of cleaning devices, such as air filters, fuel filters, oil filters and hydraulic oil filters should be cleaned and checked regularly, cleaning or replacement. counter balance stackers fuel, lubricating oil, cooling water. Hydraulic system hydraulic oil, torque converter work in oil, compressed air cylinders pneumatic system, the liquid in the battery, etc., in the course of a regular basis, or replenish.
 To improve mechanical efficiency, reduce component wear, friction taken for each lubrication antifriction. For taking forced Hydraulic fixed lift table and splash lubricated parts, lubrication focus of the work that is complementary to clean. Such as gearbox or reducer, engine lubrication, it is necessary to ensure adequate cleaning and lubricating oil; bearing lubrication work is usually caused by lubrication equipment in a timely manner complementary to each lubrication point; For open gear, ring gear, rope, clear round, arm and leg and other friction surface with open sails pieces require direct Xu
Grease lubrication.

Crane working operation precautions

Therefore, in the run-in period is likely to cause Crane parts (especially the mating surface) wear, wear faster. At this time, if the overload operation, it may cause damage to parts that Crane produced early failure.
1): Understanding lifting cargo size, central location to find cargo crane column distance from the center, according to the high lifting stacker capacity of the crane from the view parameters.
2): Crane lifting capacity (torque) is fixed, the larger crane working radius. Lifting cargo lighter, smaller working radius, lifting heavier cargo. (Working radius refers to the moment of the horizontal distance center to the hook.) -
3): Consider the size of the crane lifting capacity of the chassis size, the larger the better beam is selected, crane big and small chassis, will beam deformation and fracture. Small chassis, engine power is small, the impact of the forklift jacks capacity of the crane. Therefore, we consider the beam 230mm, you choose the 3 tons crane. When considering the beam 250mm, consider the following six tons crane. 280mm girders can select one of eight tons crane. Like the previous four after eight chassis can be considered under 10 tons crane.
Development Status
Situation abroad
Internationally Sweden, Italy, Austria, Germany, USA, Japan, Canada and other countries, more than a dozen companies producing dozens of scale models of truck mounted crane, mainly in Europe mainly. Europe from the 1940s and 1950s began producing truck mounted crane, major manufacturers have HIAB (Sweden), FASSI (Italy), FERRARI (Italy), PALFINGER (PALFINGER, Austria), TIRRE (Germany), HEILA (Italy ), etc.; Asian manufacturers are producing crane Kato (Japan), Tadano (Japan), Furukawa UNIC (Japan); American manufacturers are producing truck mounted crane GROVE and so on. These are the world's leading companies producing truck mounted crane, companies have formed a multi-function

with the signalman to maintain good communication

 find the load , and put on locks, and figuring out the specific placement of the load . Although the operating personnel are not responsible for determining the weight of the load , but if he did not verify with supervisors weight , then he would deal with all its attendant consequences counter balance stackers and transport .

7 , consider all likely to affect the lorry crane lifting capacity transport factors , and adjust the weight lifting .

8 , knowing how to load rigging fitted on the basic procedures and ensure implementation in the specific operation .

9 , with the signalman to maintain good communication .

10 , stable and secure operating vehicle lifting and transport .

11 , lorry crane transport Nobody operation, should be shut down , and its proper operation .

Composition and functions
Crane generally truck chassis, truck mounted crane accessories, cargo compartment , PTO, crane components.

Crane is a lifting and stretching through the hydraulic system to achieve cargo lift, swing , lifting equipment, usually mounted on the truck on .

In making these measurements

In order to improve the bearing with precision the actual installation, you must not make use of the Hydraulic fixed lift table deformation measurement methods and measuring tools, bearings and cylindrical bore size of the mating surfaces of the actual precision measurement can be measured on the inner and outer diameters All items to be measured, and the measured data to make a comprehensive analysis of this as far and precision worthy of shaft and housing bore bearing mounting portion size. In actual measurements made ??with the respective shaft and housing bore size and geometry should be the same with the measuring bearing temperature conditions.

To ensure the effect of a higher actual mating shaft and the bearing bore to match the surface, the roughness should be as small as possible.

In making these measurements, should be Electric hydraulic stacker and the bearing bore, the housing bore and the shaft, and a corresponding surface of the chamfered sides near the assembly, respectively, showing the maximum deviation to make the direction of two marks, so that in actual assembly, the mating alignment of both the maximum deviation of the same position, so that after assembly, the two sides can be partially offset by the deviation.

Directional signs made ??two aims can compensate for deviations into account, even if both sides supporting each rotation accuracy improved, but also between the two bearing seat hole and both ends of the journal concentricity error partially eliminated. Surface hardening on the mating surfaces to implement measures, such as sandblasting, with a diameter slightly larger than the precision plunger plug holes, once inside, there is help to improve the fitting accuracy.

By luffing telescopic, rotating

Introduction crane
Author: China Crane News 2013-02-22 09:48

Truck crane, truck mounted crane for short. Official name: crane truck, it is widely used in municipal construction, mining engineering, landscaping and other infrastructure materials and other equipment for lifting and transportation.

Crane (truck with crane) Official name: crane truck, it is widely used in municipal construction, mining engineering, landscaping and other infrastructure materials and other equipment for lifting and transportation. Crane left and right operation can be both positive and negative 360-degree rotation, can also be full rotation. Major tonnage 2 tons, 3.2 tons, 4 tons, 5 tons, 6.3 tons, 8 tons, 10 tons, 12 tons, 16 tons, 18 tons, 20 tons, 25 tons, according to structure can be divided into telescopic (straight arm) and a folding arm.

Crane (manual platform stackers with crane) is a truck-mounted cranes and chassis together as a transport vehicle. By the boom, turntable, racks, legs and other parts. By luffing telescopic, rotating, hoisting and other agencies to implement the action Crane mechanical movement, through a combination of different actions to achieve the lifting operation.

Operator Precautions
One of their vehicles is very understanding, he must know the capabilities and limitations, as well as some of its special operating characteristics.
2, should be fully familiar with crane truck operation manual provides the content.

3, should be fully familiar with lorry loading crane hoisting map. Must understand the meaning of all signs and warnings; want to be able to calculate or determine the actual crane truck lifting capability.

4, according to manufacturers require regular inspection and maintenance of vehicle lifting and transport.

5, good transport lorry crane work log records in the log: All inspection, maintenance and repair for vehicle lifting and transport details such records.

In recent years, in addition to the domestic truck market is growing rapidly

With economic development, especially after the financial crisis, a series of national policies, the electric forklift sales have been increasing year by year in the stage, but electric forklift truck sales only about 20% of sales, market share pole low, while the American and European countries there are electric forklift market, the market share of about 60%, so the development of the domestic electric forklift market space is still quite large. Twelfth Five-Year Plan targets after the enactment of national energy conservation policy implementation efforts continue to increase, coupled with the strengthening of national environmental awareness, medicine, food and other industries on the environmental performance of the powered pallet truck are also constantly upgrading, the future of China's electric forklift market is bound there will be increased significantly.

"Motors, batteries, electronic control" is the core technology of electric forklifts, commonly known as three electricity. Therefore, electric forklift with non-polluting, low energy consumption, simple operation, convenient and easy to maintain. With alternating current technology, increasingly wide range of applications, making the level of technology of electric forklift trucks are increasingly high requirements. And now the most cause for concern is the future development of electric vehicle storage. Thus it was that the future development of Chinese forklift market, you have to look at the development of electric forklifts, electric storage of vehicles especially in the market.

In recent years, in addition to the domestic hand pallet truck market is growing rapidly, the export market also showed a rapid growth situation. China Forklift mainly exported to USA, France, Italy, Germany, Russia and other machinery manufacturing power, which shows the level of quality of improved domestic forklift, forklifts, good performance, has in the international market competitiveness. However, China's imports of electric forklift truck market is still dominated, indicating that China's domestic production of electric forklift enterprises still can not fully meet the domestic demand for electric forklift users remains to be improved. In addition to domestic enterprises imported electric forklifts, but also imported electric forklift trucks, piled high with a variety of storage devices as the representative vehicles and large ports with container forklift. This also explains the presence of these forklift supply situation of China's market.

Wheeled crane maintenance

This paper focuses on wheeled crane maintenance, cleaning and lubrication is divided into two parts
 Using clean, wipe each other method to clear up various traces of oil and dirt on the machine, remove the dust on the machine and its components. Cleaning of the hydraulic system is particularly important, foreign matter is the main hydraulic system failure original Gang. Ensure that the gas in the pneumatic system clean and dry to prevent pipe corrosion, improve system reliability.
Wheeled cranes on a variety of cleaning devices, such as air filters, fuel filters, oil filters and hydraulic oil filters should be cleaned and checked regularly, cleaning or replacement. Engine fuel, lubricating oil, cooling water. Hydraulic system hand jack oil, torque converter work in oil, compressed air cylinders pneumatic system, the liquid in the battery, etc., in the course of a regular basis, or replenish.
To improve mechanical efficiency, reduce component wear, friction taken for each lubrication antifriction. For taking forced lubrication and splash lubricated parts, lubrication focus of the work that is complementary to clean. Such as gearbox or reducer, engine lubrication, it is necessary to ensure adequate cleaning and lubricating oil; bearing lubrication work is usually caused by lubrication equipment in a timely manner complementary to each lubrication point; For open gear, ring gear, rope, clear round, arm and leg and other friction surface with open sails pieces require direct Xu
Grease lubrication.

because they are too understand this industry , just Chuihuizhili

Web site with crane vertical characteristic is loyal . Not the pursuit of large , only familiar thing crane field . Site personnel operating cranes are generally the authority of the crane industry , experts, they are a means to attract customers is to do more professional , more authoritative, more exciting. They also used advertising themselves, because they are too understand this industry , just Chuihuizhili , you can let customers know : Web has opened up new sections , and push the new product. Compared with other industries, portal cranes website to focus more on the crane business. Crane website dedicated crane powered palle ttruck development has brought a new climax. Cranes sites are authoritative in their respective industries , experts, information through the site has done more professional, more authoritative , more exciting to attract customers. Studies show that with the increase of Internet users and service requirements for a variety of different online Pallet stackers with vast variety of information , which is professional, segmentation of networks and network information service platform provides ample space for development. Engaged only in one or a few specialized areas of the site platform ? , Will win golden development opportunity .
Crane operator network is a complex engineering system , the industry portal of the foundation is to have the primary data volume increase, the volume of data is not only the amount of information directly to the site , but also including members of the traffic data improved. No amount of data industry portals, it would not be the amount of traffic and membership , no amount of traffic and membership site is a dead stop , no vitality . Accumulation of huge amount of data , and customers rely on manual is not enough . Many portals began to use vertical search engine technology , the use of specific vertical search engine technology crawl precision of acquisition, high-precision algorithm for segmentation and indexes created with Web publishing , the web was a great improvement.

he web was a great improvement.

Crane operator network is a complex engineering system , the industry portal of the foundation is to have the primary data volume increase, the volume of data is not only the amount of information directly to the site , but also including members of the traffic data improved. No amount of data industry portals, it would not be the amount of powered palle ttruck and membership , no amount of traffic and membership site is a dead stop , no vitality . Accumulation of huge amount of data , and customers rely on manual is not enough . Many portals began to use vertical search engine technology , the use of specific vertical search engine technology crawl precision of acquisition, high-precision algorithm for segmentation and indexes created with Web publishing , the web was a great improvement.
Future
Building crane site could use some tools and mature industry portal solutions to achieve , so the industry is based on the core of the portal there is a huge amount of data in the industry , there is no data in the industry portal is just a basket case , is to do more pages and Architecture very large number of channels , nor under the search box , and a huge data more attractive to users . Crane web-based Scissor lift + automatic collection and dissemination of search engine technology and interactive website member + instant messaging system , is built crane site best solution . KW communication to achieve self build large sites tabbed search engine system deployment , instant messaging nesting site model , the crane site operators and architecture model innovation of ideas . ? Less input , more advertising revenue , the influence of industry authority , itself formed a positive spiral effect , if coupled with a professional e-commerce website cranes future is bright .

Crane's Internet network at this stage ventures with existing model

Knowledge: industry portals, broadly refers to an application framework that will various application systems, data resources and Internet resources into an information management platform, and unified user interface to the user, so that enterprises can quickly establishment of enterprise customers, employees and business-to-business internal information channels, enabling enterprises to release stored in a variety of internal and external information.
Brief introduction
Net is a professional crane crane industry portals, industry portals all the features. Network is set Haulers crane, crawler cranes, wheeled cranes, single girder Haulers, double girder cranes, gantry cranes, tower cranes cranes, harbor cranes, bridge cranes, jib cranes, Electric pallet jack lifts, mobile cranes, lifting crane automation, information as a whole, the use of advanced network technology as the crane industry to provide a full range, comprehensive, effective and efficient communication platform.

Classification
Crane's Internet network at this stage ventures with existing model, mainly divided into operating and non-operating sites are two types of cranes website website?. Operating the crane site generally through sales and marketing tools, business development, in order to participate in the portal provides Internet and e-commerce services. Net non-operating cranes to provide advice and retrieval based, but no particular the distinction between non-operating, but the site as a window, not the mainstream of development of business.

the site as a window, not the mainstream of development of business.

Net is a professional crane crane industry portals, industry portals all the features. Network is set Haulers crane, crawler cranes, wheeled cranes, single girder Haulers, double girder cranes, gantry cranes, tower cranes cranes, harbor cranes, bridge cranes, jib cranes, hydraulic Scissor lift, mobile cranes, lifting crane automation, information as a whole, the use of advanced network technology as the crane industry to provide a full range, comprehensive, effective and efficient communication platform.
Classification
Crane's Internet network at this stage ventures with existing model, mainly divided into operating and non-operating sites are two types of cranes website website?. Operating the forklift jacks site generally through sales and marketing tools, business development, in order to participate in the portal provides Internet and e-commerce services. Net non-operating cranes to provide advice and retrieval based, but no particular the distinction between non-operating, but the site as a window, not the mainstream of development of business.

Knowledge: industry portals, broadly refers to an application framework that will various application systems, data resources and Internet resources into an information management platform, and unified user interface to the user, so that enterprises can quickly establishment of enterprise customers, employees and business-to-business internal information channels, enabling enterprises to release stored in a variety of internal and external information.
Brief introduction

Small crane Definition

Small crane is a small crane and chassis together as a transport vehicle. By the boom, turntable, racks, legs and other parts. By luffing telescopic, rotating, hoisting and other agencies to achieve small crane movement mechanical movement, through a combination of different actions to achieve the Scissor lift operation.Small crane Overview
Small crane is a small crane (Small crane) for short, is usually caused by small cars, agricultural vehicles second-class chassis to install a dedicated small crane (12 tons in weight lifting usually less) and the production of a special vehicle. Widely used in construction sites, industrial and mining enterprises, railway stations, docks, electricity, postal services, urban construction, landscaping, paving bridges and other fields.
Small crane Features
One, full hydraulic transmission, smooth, adjusted operating speed, high efficiency, low labor intensity, is currently the mainstream light crane and direction.
Two, equipped with safety locks and Hand pallet jacks brakes, advanced technology, good security.
Third, the use of the vehicle chassis manufacturers, reasonable configuration, reliability is guaranteed.
Fourth, the use of national standard steel boom material overall repression.
Five, equipped with night work lighting and warning operations area Xianzarenyuan devices.

Maximum weight of 500KN (50t), major institutions by the hydraulic control

The main technical parameters
There lifting or lifting moment. Mainly depends on when choosing from the weight, working radius and lifting height, often referred to as "lifting three elements", Scissor lift between the three elements, there is mutual checks. Its technical performance of expression, usually lifting or lifting performance performance graph corresponds to digital form.
Crawler crane is characterized by flexible operation itself can turn 360 degrees, on a forklift jacks solid ground can load driving. The role of the track, in the soft mud on the ground screw job, and can be uneven in Kawasaki Tanzania travel site. At present, construction of prefabricated structures, especially single industrial plant construction installation, crawler cranes are widely used. Crawler crane drawback is less stable and should not overload lifting, driving slow and tracked easily damaged pavement, thus, the transfer of multi-purpose flatbed trailer shipment.
Currently, commonly used in the structure of the domestic installation crawler cranes, mainly in the following models: W1 a 50, W1 a 100, W2-100, Northwest 78D and so on. In addition, there are some imported models.
W1 a 50 type
Maximum weight of 100KN (10t), hydraulic lever joint manipulation, can take a long boom to 18m, this crane body is small, the textbook Table 6-1 shows, track frame width M = 2.85m, will be transferred to the center of the tail Distance a = 2.9m, light weight, fast, can work in a narrow space, for lifting the span of 18m or less, mounting height of around 10m for small plants and do some auxiliary work, such as loading and unloading components and so on.
W1 a 100

on which a power plant, transmission, winch

For the assembly of multi-section Hand stacker structure, adjust the length of the section can be changed after the number, the lower end portion pivotally mounted on the stage turn the top with a luffing rope pulley hanging support, you can change its inclination.
There are also installed at the top of the boom jib, jib and boom into a certain angle. Hoisting mechanism with primary and secondary two winch system, the main winch system for boom hoist, auxiliary winch system for jib hoist.
Turntable:
By rotary support mounted on the chassis, the turntable can be transmitted to the entire weight of the chassis, on which a power plant, transmission, winch, control mechanism, such as balancing weight and the hangar. By rotating mechanism allows the power unit pallet jacks rotate 360 ​​°. Slewing from the upper and lower plate and roll during rolling pieces (bowls, roller) composition, the turntable can be passed to the full weight of the chassis, and to ensure the free rotation of the turntable.
Chassis:
Including travel agencies and walking devices: the former makes the crane walking back and forth and left and right turns; latter by the crawler frame, wheels, steering wheel, roller, carrier roller and track wheels and other components. Power plant through the vertical axis, horizontal axis and rotate the drive wheel chain drive, which led to the guide wheel and roller, so that machine rolling while walking along the track.

Definition crawler crane

Crawler crane crawler device refers to a full-back rotation jib cranes. English name for crawler crane.
Commonly known as crawler cranes crawler cranes, crawler device refers to a full-back rotation jib cranes. English name for crawler crane.
Outline
Crawler crane (crawler crane), is a high-rise building construction of self-propelled cranes. Is a use of rotating boom crawler crane. Track ground area, through the good, adaptable, can travel with load for construction site lifting operations. Can be digging, rammed earth, piling and other operations. But walking slow transfer of the site requires additional vehicle handling.
Composition
Crawler crane from the power plant, Scissor lift bodies and boom, turntable, chassis and other components.
Boom:
For the assembly of multi-section truss structure, adjust the length of the section can be changed after the number, the lower end portion pivotally mounted on the stage turn the top with a luffing rope pulley hanging support, you can change its inclination.
There are also installed at the top of the boom jib, jib and boom into a certain angle. Hoisting mechanism with primary and secondary two winch system, the main winch system for boom hoist, auxiliary winch system for jib hoist.
Turntable:
By rotary support mounted on the chassis, the turntable can be transmitted to the entire weight of the chassis, on which a power plant, transmission, winch, control mechanism, such as balancing weight and the hangar. By rotating mechanism allows the power unit pallet jacks rotate 360 ​​°. Slewing from the upper and lower plate and roll during rolling pieces (bowls, roller) composition, the turntable can be passed to the full weight of the chassis, and to ensure the free rotation of the turntable.
Chassis:
Including travel agencies and walking devices: the former makes the crane walking back and forth and left and right turns; latter by the crawler frame, wheels, steering wheel, roller, carrier roller and track wheels and other components. Power plant through the vertical axis, horizontal axis and rotate the drive wheel chain drive, which led to the guide wheel and roller, so that machine rolling while walking along the track.

standards Valves

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 handling operations, and another double wheel design to overcome high loads and uneven ground dedicated and strong acid, water wheels of rust MC.Harbin -2011 - excavator pallet truck
Harbin Engineering Machinery 20110 blue diesel vehicles can not pull 45-150 own mini excavator pallet electric pallet trucks farm tractor, front and twin air brake, height 65-75 cm, the upper and lower flexibleHarbin -2011 - excavator pallet truck
Harbin Engineering Machinery 20110 blue diesel vehicles can not pull 45-150 own mini excavator pallet truck, farm tractor, front and twin air brake, height 65-75 cm, the upper and lower flexib

Lifting hydraulic system contamination control

Hand stacker crane commissioning and use, the hydraulic system of pollution control to do the following
Lifting hydraulic system contamination control
Hydraulic truck crane commissioning and use, the hydraulic system of pollution control to do the following
1 regular testing
2. Cleaning and replacing the oil filter
     In the system for disassembly cleaning and replacement filters can effectively remove from the Electric pallet truck fluid solid particles, which is one of the key measures of pollution control. Fluid passing through a good filter to prevent swarf or other large particles stuck causing elements, scratches, clogging and other faults. On the pump inlet, an important component of the inlet filter pump is installed, etc. imaginary cleaned or replaced regularly.
     3. Ensure cleanliness of hydraulic oil indicators
     Hydraulic truck crane used hydraulic oil should generally be maintained volume, viscosity, total acid as the main test indicators.
     Maintenance, adding crane hydraulic oil hydraulic system shall comply ZBE39002-86 "car tire from the attention and solid particles crane hydraulic oil contamination level" standard, namely: Group particulate contamination level should not exceed 18/ls, cranes used in the process hydraulic oil should not exceed 20/16; moisture limit indicators: total water content of hydraulic oil required should not exceed o. 1%; operating viscosity limit indicators; requirements kinematic viscosity hydraulic oil change should not exceed 10% of the soil; total acid number limit: Requires total acid number should not exceed o. 3m8 (KoH) / 8.
     4. Ensure that the closed nature of the hydraulic system
     Hydraulic truck crane hydraulic system to achieve dustproof and waterproof to keep the system closed, prohibited foreign matter into the hydraulic system.

Lifting hydraulic system contamination control

Hand stacker crane commissioning and use, the hydraulic system of pollution control to do the following
Lifting hydraulic system contamination control
Hydraulic truck crane commissioning and use, the hydraulic system of pollution control to do the following
1 regular testing
2. Cleaning and replacing the oil powered palle ttruck
     In the system for disassembly cleaning and replacement filters can effectively remove from the hydraulic fluid solid particles, which is one of the key measures of pollution control. Fluid passing through a good filter to prevent swarf or other large particles stuck causing elements, scratches, clogging and other faults. On the pump inlet, an important component of the inlet filter pump is installed, etc. imaginary cleaned or replaced regularly.
     3. Ensure cleanliness of hydraulic oil indicators
     Hydraulic truck crane used hydraulic oil should generally be maintained volume, viscosity, total acid as the main test indicators.
     Maintenance, adding crane hydraulic oil hydraulic system shall comply ZBE39002-86 "car tire from the attention and solid particles crane hydraulic oil contamination level" standard, namely: Group particulate contamination level should not exceed 18/ls, cranes used in the process hydraulic oil should not exceed 20/16; moisture limit indicators: total water content of hydraulic oil required should not exceed o. 1%; operating viscosity limit indicators; requirements kinematic viscosity hydraulic oil change should not exceed 10% of the soil; total acid number limit: Requires total acid number should not exceed o. 3m8 (KoH) / 8.
     4. Ensure that the closed nature of the hydraulic system
     Hydraulic truck crane hydraulic system to achieve dustproof and waterproof to keep the system closed, prohibited foreign matter into the hydraulic system.

Lifting hydraulic system contamination control

Hydraulic truck crane commissioning and use, the hydraulic system of pollution control to do the following
Lifting hydraulic system contamination control
Hand pallet jacks truck crane commissioning and use, the hydraulic system of pollution control to do the following
1 regular testing
2. Cleaning and replacing the oil filter
     In the system for disassembly cleaning and replacement filters can effectively remove from the hydraulic fluid solid particles, which is one of the key measures of pollution control. Fluid passing through a good filter to prevent swarf or other large particles stuck causing elements, scratches, clogging and other faults. On the pump inlet, an important component of the inlet filter pump is installed, etc. imaginary cleaned or replaced regularly.
     3. Ensure cleanliness of hydraulic oil indicators
     Scissor lift crane used hydraulic oil should generally be maintained volume, viscosity, total acid as the main test indicators.
     Maintenance, adding crane hydraulic oil hydraulic system shall comply ZBE39002-86 "car tire from the attention and solid particles crane hydraulic oil contamination level" standard, namely: Group particulate contamination level should not exceed 18/ls, cranes used in the process hydraulic oil should not exceed 20/16; moisture limit indicators: total water content of hydraulic oil required should not exceed o. 1%; operating viscosity limit indicators; requirements kinematic viscosity hydraulic oil change should not exceed 10% of the soil; total acid number limit: Requires total acid number should not exceed o. 3m8 (KoH) / 8.
     4. Ensure that the closed nature of the hydraulic system
     Hydraulic truck crane hydraulic system to achieve dustproof and waterproof to keep the system closed, prohibited foreign matter into the hydraulic system.

Truck crane slewing ring

(A) Installation
     (1) Truck Crane slewing bearing (unit) clean. Prior to installation, carefully cleaned down to the mounting surface, the cleaning liquid can not enter inside the raceway.
     (2) Cranes and ask to be transferred bearing surface is machined. Slewing ring mating surface with the upper and lower ends of the circumferential surface of the whole range of requirements to achieve good bonding area above criteria.
     (3) slewing ring mounting holes with the mounting holes on the bottom ledge concentric ensure accuracy. Otherwise bearing easily deformed, affecting their Scissor lift support device failure will frequently generated.
     (4) the installation of slewing bolt length not less than 5d (d - bolt thread nominal size). If blind hole, then tighten the screws in the installation should not touch the bottom of the hole.
     (5) to prevent the bolt head and the nut is pressed stains material below, must pay attention to the compressive strength of the mounting surface.
     (6) the required number must be used to provide specifications of the tensile bolts.
     (7) of the bolt head and nut lower surface pressure dispersion, preferably using quenched forklift jacks washers.
     (8) bolts, threaded parts, the head, nuts and trapped between the pad friction surface must drip a little oil.
     (9) bolt preload must reach 70% of the material yield limit.
     (10) may not be used under any circumstances spring washers.
     (11) All nozzles shall be installed in an easily accessible area, and should be added to the required amount of lubrication sufficient punishment.

Used truck crane slewing ring

This paper focuses on the slewing crane use and precautions

   (A) in accordance with the operating conditions of slewing. Select Scissor lift interval. General ball bearing. Each operation loo hour lubrication 1
Times; supporting the column, every 500 hours of operation lubrication 1; at high temperatures and dusty environment of continuous work truck cranes, harsh environmental conditions appropriate for the level should be reduced lubrication interval.
     (2) grease to seal or reduce friction and reduce wear and anti-corrosion effect. To add a little supplemental lubricant oils, such as labyrinth seals, grease should be made over rob from the labyrinth structure overflows.
     (3) must be evenly distributed fat, grease relubrication poise, to actuate the crane slewing mechanism so slow rotation.
     (4) cleaning crane, to prevent steam or other fluids into the channel.
     (5) scissor pallet truck crane for a long time after the closure, the need for slewing slick.
   (6) truck crane work after a period of time, you need to turn the text Order bolts (screws) Retighten to the specified
Torque values. Interval a gel as three months. If the load is relatively heavy, inspection intervals should be shortened.

Tire crane power steering essentials

This article explains the operation of the crane tire essentials to help you better understand the device
 (1) to start the engine. Depress the grounding switch, the Tuen Latchkey screwed to "fire" position, technology down "start" button. After starting electric door lock onto the "work" position, the starter is successful, you should immediately release the "Start" button, the "start" button technology under time should not exceed 15s, so as not to burn out the starter motor. When a successful start at the end, you should pause for a moment (about lmln), to be the starter for the second time to stop before starting. Repeated 3 times still can not start. Should follow the engine manual inspection, troubleshooting.
     (2) No-load Preheat running. After starting the crane should be in an unloaded condition, low Electric pallet jack, low speed (650 a 750r/min) 5-10min. While observing and check the following items are normal, and then only with load for 4k. Fuel temperature> 45 ℃; temperature) 55 ℃; pressure> o. 45MPa; voltage with the speed increased, following a maximum 230v: engine without any exception
Vibration, sound, smell and so on.
     (3) the engine stop. Depress the pedal flameout, long stop, but also tick open Ground switch.

Tire crane power steering essentials

This article explains the operation of the crane tire essentials to help you better understand the device
 (1) to start the engine. Depress the grounding switch, the Tuen Latchkey screwed to "fire" position, technology down "start" button. After starting electric door lock onto the "work" position, the starter is successful, you should immediately release the "Start" button, the "start" button technology under time should not exceed 15s, so as not to burn out the starter motor. When a successful start at the end, you should pause for a moment (about lmln), to be the starter for the second time to stop before starting. Repeated 3 times still can not start. Should follow the engine manual inspection, troubleshooting.
     (2) No-load Hand stacker running. After starting the crane should be in an unloaded condition, low throttle, low speed (650 a 750r/min) 5-10min. While observing and check the following items are normal, and then only with load for 4k. Fuel temperature> 45 ℃; temperature) 55 ℃; pressure> o. 45MPa; voltage with the speed increased, following a maximum 230v: engine without any exception
Vibration, sound, smell and so on.
     (3) the engine stop. Depress the pedal flameout, long stop, but also tick open Ground switch.

Tire crane power steering essentials

This article explains the operation of the crane tire essentials to help you better understand the device
 (1) to start the engine. Depress the grounding switch, the Tuen Latchkey screwed to "fire" position, technology down "start" button. After starting Electric pallet truck door lock onto the "work" position, the starter is successful, you should immediately release the "Start" button, the "start" button technology under time should not exceed 15s, so as not to burn out the starter motor. When a successful start at the end, you should pause for a moment (about lmln), to be the starter for the second time to stop before starting. Repeated 3 times still can not start. Should follow the engine manual inspection, troubleshooting.
     (2) No-load Hand stacker running. After starting the crane should be in an unloaded condition, low throttle, low speed (650 a 750r/min) 5-10min. While observing and check the following items are normal, and then only with load for 4k. Fuel temperature> 45 ℃; temperature) 55 ℃; pressure> o. 45MPa; voltage with the speed increased, following a maximum 230v: engine without any exception
Vibration, sound, smell and so on.
     (3) the engine stop. Depress the pedal flameout, long stop, but also tick open Ground switch.

Tire crane hoisting mechanism manipulation

This article explains the tire crane clutch bearing mechanism operating essentials , and precautions

Hoisting mechanism manipulation
  Agencies designate vertical ( pull switch in the " machinery " position ) ;
  ( A ) cargo promotion . Lifting the handle will pull to the "up" position, release the brake drum pedal controls the lifting speed . Observe the lifting motor current value when the current is less than ll oA can continuous operation ; current exceeds lloA (Jm: <155A) , the starting time should be 71 Ding an operating cycle time of 15%.
    ( 2 ) the goods stay in the air . Release the accelerator pedal , the brake pedal depressed reel and levers in place. If the goods need to be in the air longer stay , you also need to pull the switch in the " Electric" position to ensure safety.
    ( 3 ) gravity drop. Lifting the handle in the neutral position . Jane brake pedal controls the volume . Lifting lowering speed shall not exceed 1.5 times the speed . Work process in order to avoid danger .
    Electrically operated ( pull switch in the " Electric" position ) ;
    ( A ) cargo promotion . Loosen the drum brake pedal , pull the handle to the frame lifting "up" position tube , feet stepped on the accelerator pedal to control the lifting speed . Precautions with the " mechanical " manipulation.
    ( 2 ) the goods stay in the air . Release the accelerator pedal , the lifting levers in place, if the goods are to be in the air for a long stay , you can simply roll the brake pedal depressed , to ensure safety.
    ( 3 ) power down . Switch to the " Electric" position in the idle case, the lifting handle to the down position , and then gradually increase the throttle . And special attention should be : Do not step on the accelerator pedal , the brake to prevent excessive inrush current due to sudden brake release , resulting in speeding motor motored phenomenon . F lowering speed shall not exceed half the lifting speed to avoid brake overheating. In each job , the job site should be dry ground while Tanzania sturdy , forced to work in the soft ground , should lay adequate strength steel or wood, Paul Wang crane dump trap does not occur .
    From the weight of the crane lifting heavy objects should be rated lifting Scale enumerated range. Do not fight outrigger operation, the tire pressure should be o. 7 Land o. 02MPa, and tighten the screw jack overseas before , to prevent the machine tipping accidents. " Driving, brake " switch should pull in the " brake " position. Check the lifting height limiter is working proper

The goods during the movement amplitude characteristics

     High tower crane tire gantry crane has a major characteristic that the goods in the course of close to level luffing movement, unlike other tire cranes, cargo height varies with the magnitude of dense shelf. This is due to the high tower crane used tires compensation pulley devices.
   Good technical performance
   High tower crane lifting large tires, electrics tacker height and working range is large, you can give full play to use Performance
Small high tower crane tire nominal weight 20t or more, the maximum rated lifting capacity up to 75t.
   Easy installation and maintenance
   High tower crane tires mounted installation requires only down state, then the whole height of not more than 5m, installation process is simple and easy construction. And in need of repair, as long as the state is down, you can repair all parts of the machine, and other hunger-type, compared with a particularly obvious advantages.
   Easy to operate
   The model set upper and lower cab, the higher ground to the control room for the driving cab

Features high tower crane tire

This paper describes the characteristics of a high tower crane tires, including the operational and performance

      Mobility, applicability
     High tower crane tire scissor pallet truck cranes do not like, like the mounting rails, it can hurt, like other normal tire crane operations area in any walk, flexible, able to rear yard in front of the dock and mobile operations.
   Good performance of the school legislation and jib can stand upright, you can pour it, so to the ground, the whole height of 4.5-5m, much shorter than the normal tire crane, can be safely and easily through the bridges, culverts and other overhead structures.
     The goods during the movement amplitude characteristics
     High tower crane tire gantry crane has a major characteristic that the goods in the course of close to level luffing movement, unlike other tire cranes, cargo height varies with the magnitude of dense shelf. This is due to the high tower crane used tires compensation pulley devices.
   Good technical performance
   High tower crane lifting large tires, lifting height and working range is large, you can give full play to use Performance
Small high tower crane tire nominal weight 20t or more, the maximum rated lifting capacity up to 75t.
   Easy installation and maintenance
   High tower crane tires mounted installation requires only down state, then the whole height of not more than 5m, installation process is simple and easy construction. And in need of repair, as long as the state is down, you can repair all parts of the machine, and other hunger-type, compared with a particularly obvious advantages.
   Easy to operate
   The model set upper and lower cab, the higher ground to the control room for the driving cab

Mainly from the text column order jib role that requires a certain column

High tower crane tire tire crane substructure is basically the same with the ordinary. The difference is that the former place in the latter mounted jib up the school installed a p-frame is installed into place two hydraulic cylinders pull up the school. Install boom in the middle column. This crane metal structure composed of the following parts.
     1. Trolley frame
     Crane with steel frame with steel welded into a box-shaped (or slab) structure, the travel drive, transmission device mounted on the support frame mounted umbrella holder r6 rotary support, bracket mounted to the frame at the front and rear end beam. Material generally use low-Jin Gaoqiang degree structural steel. Because although the number of products to be certain counterweight could be considered ordinary carbon steel frame.
    2. Turntable
     Crane turntable structure similar to ordinary tires. To install the mounting arm at school legislation, the tail with significant support beams a ship with a Hand pallet trucks-strength low-alloy structural steel made ​​with good strength and rigidity of the box-shaped structure.
     3. Column
     Mainly from the text column order jib role that requires a certain column height to install compensate pulley. Column one small ship, I asked for the two big large section box structure to ensure good torsion resistance.
     4. Boom
     The boom of the crane truss structure, the main square seamless multi-chord vessels with paragraph 2 and pin hinge.

High tower crane tire structure

High tower crane tire tire crane substructure is basically the same with the ordinary. The difference is that the former place in the latter mounted jib up the school installed a p-frame is installed into place two hydraulic cylinders pull up the school. Install boom in the middle column.

 High pallet jacks crane tire tire crane substructure is basically the same with the ordinary. The difference is that the former place in the latter mounted jib up the school installed a p-frame is installed into place two hydraulic cylinders pull up the school. Install boom in the middle column. This crane metal structure composed of the following parts.
     1. Trolley frame
     Crane with steel frame with steel welded into a box-shaped (or slab) structure, the travel drive, transmission device mounted on the support frame mounted umbrella holder r6 rotary support, bracket mounted to the frame at the front and rear end beam. Material generally use low-Jin Gaoqiang degree structural steel. Because although the number of products to be certain counterweight could be considered ordinary carbon steel frame.
    2. Turntable
     Crane turntable structure similar to ordinary tires. To install the mounting arm at school legislation, the tail with significant support beams a ship with a high-strength low-alloy structural steel made ​​with good strength and rigidity of the box-shaped structure.
     3. Column
     Mainly from the text column order jib role that requires a certain column height to install compensate pulley. Column one small ship, I asked for the two big large section box structure to ensure good torsion resistance.
     4. Boom
     The boom of the crane truss structure, the main square seamless multi-chord vessels with paragraph 2 and pin hinge.

High tower crane tires manipulation and protection

High tower crane tires with full hydraulic transmission , mechanical , simple structure , light weight , low energy consumption , easy maintenance , smooth, impact, centralized control , with good speed performance .

 1 . Crane operation
    High tower crane tires electrics tacker , lying pJ treasure while driving , but also in unchanging central control room. These two sets of lifting sail the whole system can be manipulated , all instruments are located in the cab and the control room , from the weight ( lifting moment ) , work rate and other relevant data in the cab or the control room display.
 2 . Safety devices
    ( 1 ) machine . ① emergency stop switch ; ⑦ hydraulic oil tank is less than five requirements protector ; ① liquid Qing oil temperature is higher than a predetermined value and gear warning devices ; ④ hydraulic safety valve ; ⑤ alarm . In addition to the alarm , the other devices installed in the cab or the control room , the driver can at any time depending on the circumstances to take corresponding measures .
    ( 2 ) engine . ① starting system electrical mechanical interlock ; ⑦ speed stabilizer ; ⑤ low engine oil pressure protection device ; ④ cooling water temperature is too high or too low warning devices ; ⑤ fuel indicating device ; ⑧ air filter replacement indicating device .

starting system electrical mechanical interlock

  ( 2 ) engine . ① starting system electrical mechanical interlock ; ⑦ speed stabilizer ; ⑤ low engine oil pressure protection device ; ④ cooling water temperature is too high or too low warning devices ; ⑤ fuel indicating device ; ⑧ air filter replacement indicating device .
    ( 3 ) lifting mechanism . ① ultra- load protection device ; ② main pump hydraulic system pressure exceeds the pressure of the safety relief valve to allow and lighting Electric pallet truck '② Automatic brake adjustment and automatic adaptive devices ' ① lifting height limiting device .
   ( 4 ) luffing mechanism . ① amplitude (Rh, s one day "n) limiting device ( two-stage limit : an alarm , two braking ); ② column vertical position indication and limit device ; ② unchanging position down to the limit and stop instructions means ' ④ hydraulic system relief valve .
    ( 5 ) rotating mechanism . ① rotating mechanism locking device ; ② rotation speed limit risk * ③ rotating mechanism mounted emergency brake installed
Home ; ① hydraulic power failure protection device ; ③ elastic limit torque clutch .
    ( 6 ) driving mechanism . ① lights, brake , guitar sound device ; ② outrigger safety protection device.
    ( 7 ) container spreader safety protection device.
    High tower crane tires with full hydraulic transmission , mechanical , simple structure , light weight , low energy consumption , easy maintenance , smooth, impact, centralized control , with good speed performance . This model in practice the rejection of the other crane gradually reflect various advantages . Due to its versatility , adaptability and flexibility , it is a promising development sail type .

the engine rated speed

  (1) The most basic scissor pallet truck and the long arm of the corresponding minimum and maximum working range of the amplitude, the engine rated speed, no load.
     (2) the most basic arm and the long arm of the maximum working range, the corresponding nominal weight, the engine rated speed.
     2. Debugging method
     In the condition (1), looked up and whereabouts jib cranes throughout, from the determination of the whereabouts of Yang and boom times, and the maximum hydraulic luffing process and current values​​.
     In the condition (2), jib crane towels looked to the minimum operating speed range, medium-speed pipe rack to fall into place. Determination of the time required for landing pipe rack and the maximum stable oil pressure and current constant.
     (Four) Xiao frame telescopic mechanism
     1. Debug condition
     Boom elevation 50. Engine rated speed, no load
     2. Debugging method
     Determination of the entire boom extension (reduced) and the maximum time required for oil (current) value. The need for manual or mechanical assistance in order to achieve the boom extension (contraction), allowing measurement of elongation classification (shrink) time and the maximum pressure and current values​​; maximize the use of automatic recorder for recording.

debug condition

 (1) The most basic Electric pallet truck and the long arm of the corresponding minimum and maximum working range of the amplitude, the engine rated speed, no load.
     (2) the most basic arm and the long arm of the maximum working range, the corresponding nominal weight, the engine rated speed.
     2. Debugging method
     In the condition (1), looked up and whereabouts jib cranes throughout, from the determination of the whereabouts of Yang and boom times, and the maximum hydraulic luffing process and current values​​.
     In the condition (2), jib crane towels looked to the minimum operating speed range, medium-speed pipe rack to fall into place. Determination of the time required for landing pipe rack and the maximum stable oil pressure and current constant.
     (Four) Xiao frame telescopic mechanism
     1. Debug condition
     Boom elevation 50. Engine rated speed, no load
     2. Debugging method
     Determination of the entire boom extension (reduced) and the maximum time required for oil (current) value. The need for manual or mechanical assistance in order to achieve the boom extension (contraction), allowing measurement of elongation classification (shrink) time and the maximum pressure and current values​​; maximize the use of automatic recorder for recording.

Commissioning bodies wheeled cranes

This paper describes the debugging methods wheeled cranes, pay attention to when debugging to make a record, and precautions
(A) Lifting mechanism
1. Debug condition
(1) basic boom, pulley maximum magnification, no load.
(2) basic boom, pulley maximum magnification, the maximum rated capacity
(3) to the maximum line pull.
     (4) the maximum line pull Heng l / 5.
     2. Debugging method
     When the engine is rated speed, in the fully open position joystick uniform lifting (-1; descending) test load, measured at the time of the trip A2 plexus, pallet jacks output oil pressure, flow rate (speed), or generator output current, voltage. Calculate the nominal single rope speed, maximum rated lifting reorganization Scissor lift (Factory descending) drive power transmission efficiency, and load lifting (decrease) when the power and efficiency.
     (Two) slewing mechanism
     1. Debug condition
     (1) basic boom, maximum elevation, no load, the engine rated speed.
     (2) basic boom, the maximum rated capacity, the corresponding nominal amplitude, safe rotation speed.
     (3) basic boom, the maximum rated capacity, the corresponding nominal range, the minimum steady speed.
     2. Debugging method
     Determination of uniform rotation when the rotation angle (factor), turnaround time, the hydraulic pump output, flow voltage. Calculated rotation speed, power.

The minimum steady speed wheeled crane commissioning

This is the minimum steady speed of wheeled cranes debug introduced into working conditions, methods and requirements of three parts
1. Debug condition
Base pipe frame, engine rated speed, rated amplitude maximum rated lifting weight lifting
2. Debugging method
     Manipulation engine throttle control movement speed and other institutions * are the lifting, down, left and right turning movements reach a steady speed as low as possible. Determination of uniform through - determine the distance required time period, lifting movement distance of not less than 1m, rotary motion angle of not less than 180. , Were calculated from the rise, fall, swing the minimum steady speed, and with the requirements of crane design data comparison.
3. Requirements for commissioning
(A) single rope Hand pallet jacks rated speed, rated rotation speed, no load rotation speed is not less than the design value.
(2> The maximum rated lifting capacity crane operations, lifting, and turning down the minimum steady speed shall not exceed the total community

some basic knowledge and skills

If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results.

  Crane various properties in the actual production can be fully played, depending on the actual use are reasonable. If resorted to improper maintenance, Hand pallet jacks machinery wheeled Zhao difficult to be effective, will exacerbate the wear and cranes sail affecting life, and even cause accidents. If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results. This section focuses on the use of mobile cranes described in security technology.
  (A) the operator
     Crane operators should be subject to strict Luo theoretical training expertise and practical technical training, proficiency in vehicle driving and crane operators two technologies. Not only to master the crane structure, working principle and technical performance, and should be read in various cooked Random technical documents, such as brochures, manuals performance, operation and maintenance manuals and safe use of rules, but also memorize the various provisions in the operation signals master - · some basic knowledge and skills.
     (Two) safe working environment conditions
     Cranes at work due to bad electrics tacker, such as high winds, thunderstorms, big men, etc., should stop work; prohibited in a landslide hazard venue working near transmission lines; at night or in the operator's view is obstructed operating conditions, there must be reliable measures, and must be directed with the job; complex field operations in terms of personnel, generally set Starsky signs and safety fence, or someone on duty as a security guard

Wheeled crane safety technology

If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results.

  Crane various properties in the actual production can be fully played, depending on the actual use are reasonable. If resorted to improper maintenance, Hand pallet jacks machinery wheeled Zhao difficult to be effective, will exacerbate the wear and cranes sail affecting life, and even cause accidents. If you are using and managers to fully understand the whole structure, principles, technical performance, design specified conditions of use, security technology, you will get the best results. This section focuses on the use of mobile cranes described in security technology.
  (A) the operator
     Crane operators should be subject to strict Luo theoretical training expertise and powered palle ttruck technical training, proficiency in vehicle driving and crane operators two technologies. Not only to master the crane structure, working principle and technical performance, and should be read in various cooked Random technical documents, such as brochures, manuals performance, operation and maintenance manuals and safe use of rules, but also memorize the various provisions in the operation signals master - · some basic knowledge and skills.
     (Two) safe working environment conditions
     Cranes at work due to bad weather, such as high winds, thunderstorms, big men, etc., should stop work; prohibited in a landslide hazard venue working near transmission lines; at night or in the operator's view is obstructed operating conditions, there must be reliable measures, and must be directed with the job; complex field operations in terms of personnel, generally set Starsky signs and safety fence, or someone on duty as a security guard

Hydraulic system with solid particles corrosion

    Hydraulic system with solid particles corrosion. Which along with the hydraulic oil flow in the system by means of pumps, valves and actuators , it will increase friction and wear of drama , generate new particles.
    ( 1 ) Valves components. Deputy campaign valve components with the gap is generally 8-20ym. When the solid particles into motion pair gap , it will scratch the parts surface , increased wear, with the gap to expand, or to the orifice , orifice plugs , resulting in valve operation performance deterioration or loss of function, causing the hydraulic system vibration or movement failure, even spool jam fault .
    (z) powered palle ttruck components . Contamination between particulate matter will make some parts , such as gear pump gear side and front and rear end caps , tip and the housing between the piston relative to the cylinder plunger between the cylinder block and oil pan between increased wear and tear , reduced efficiency , fever and even burned , shorten life.
    ( 3 ) Hydraulic cylinders poise . Pollution particles will accelerate seal wear , causing leakage increases also more common in Sierra injury scrapped .
    2 fibers, film, welding slag, paint flakes hazards
   Fiber, film, welding slag, paint flakes hazards, often blocking element orifice or orifices disorder or malfunction.
    3 . Air hazards
    Hand pallet trucks system of the hydraulic crane assembly and repair process, because the air in the hydraulic system hazards lack of knowledge , not fully exhaust the air from the inside into the hydraulic system , especially when a large volume of air into the cylinder , the crane lifting operation , the cylinder will emit a sharp noise , excessive vibration , or sometimes can be seen creeping phenomenon . Crawling is an extremely harmful fault performance .

Truck Crane hydraulic system contamination

At present, some advanced industrial countries, the company survey showed that 70% of hydraulic mechanical failure from the hydraulic system, hydraulic system so ugly that at least 75% is due to dirty hydraulic oil caused. Domestic crane hydraulic system contamination due to failures and accidents also extremely common.
  At present, some advanced industrial countries, the company survey showed that 70% of Hand stacker mechanical failure from the hydraulic system, hydraulic system so ugly that at least 75% is due to dirty hydraulic oil caused. Domestic crane hydraulic system contamination due to failures and accidents also extremely common. Such as hydraulic truck crane hoisting mechanism of the variable motor oil due to blockage of the particulate matter control ports and hinder variables, and even failure; larger than hydraulic truck crane slewing mechanism because of the oil particles clogging unidirectional rotary damping valve can not be executed instruction; pumps, cylinders, motors, locks, valves, Electric pallet truck failure due to wear particles. These are caused by the crane hydraulic system contamination, and not unjustly quality hydraulic and hydraulic components and repair underwater.
     Hydraulic crane hydraulic system is a core component. Crane operation outrigger cylinder and cylinder luffing all want to support the whole weight and load. Slewing jib crane telescopic and institutions such as motivation to work also depends on the hydraulic system. Oil pollution levels and cleanliness of the hydraulic system, the use of a direct impact on the reliability and service life of the crane

Wheeled crane driving requirements

Wheeled cranes have adequate time is in the running state, must comply with all the requirements of driving, in addition to addition, you should note the following:

     Wheeled cranes have adequate time is in the running state, must comply with all the requirements of driving, in addition to addition, you should note the following:
     1. Boom shrink storage
For telescopic boom structure. Before driving the crane jib paragraphs should be fully retracted, Hand pallet jacks jib. For terror frame arm, then enclose shelter pure intermediate section removed, leaving only the basic arm. The boom and hook block placed in the design position, and then turn off mechanism barium barium live, to recover the text legs, finally disengaging the clutch hydraulic fritters.
     2. Road conditions
     Driving Directions PS meaning of boom head turning radius and through bridges, culverts restrictions. Through the narrow bridge, should someone ground command. Rough terrain cranes in off-road driving, you should pay attention to the machine through the parameters, such as approach angle, departure angle, the minimum ground clearance, maximum through corners, scissor pallet truck as the ability to adapt Max.gradeability For road conditions through the floor. It should also be appropriate to reduce the tire pressure to meet the requirements of ground pressure.
     3. Traveling hoists
     Wheeled crane hoists with generally allows only cares tanks, solid, non-gradient venue. Before operating the tire pressure reaches a predetermined value, off axis and the longitudinal axis of the boom should be in the same vertical plane, rotating platform and swing bridge should be locked. Lifting weights from the weight should not exceed a predetermined value corresponding conditions, speed of not more than 5km / h.

Wheeled crane maintenance

This paper focuses on wheeled crane maintenance, cleaning and lubrication is divided into two parts
 Using clean, wipe each other method to clear up various traces of oil and dirt on the machine, remove the dust on the machine and its components. Cleaning of the hydraulic system is particularly important, foreign matter is the main Hand pallet jacks system failure original Gang. Ensure that the gas in the pneumatic system clean and dry to prevent pipe corrosion, improve system reliability.
Wheeled cranes on a variety of cleaning devices, such as air filters, fuel filters, oil filters and hydraulic oil filters scissor pallet truck be cleaned and checked regularly, cleaning or replacement. Engine fuel, lubricating oil, cooling water. Hydraulic system hydraulic oil, torque converter work in oil, compressed air cylinders pneumatic system, the liquid in the battery, etc., in the course of a regular basis, or replenish.
     To improve mechanical efficiency, reduce component wear, friction taken for each lubrication antifriction. For taking forced lubrication and splash lubricated parts, lubrication focus of the work that is complementary to clean. Such as gearbox or reducer, engine lubrication, it is necessary to ensure adequate cleaning and lubricating oil; bearing lubrication work is usually caused by lubrication equipment in a timely manner complementary to each lubrication point; For open gear, ring gear, rope, clear round, arm and leg and other friction surface with open sails pieces require direct Xu
Grease lubrication.

Determine the cause category

     Big crane wheel failure can be divided into two categories original N, one is mechanical damage, and the other connected to relaxation, the gap increases. For the damage of the former, the latter kind of non-invasive that while "some non-invasive cause of the malfunction is difficult Jin Ming, must be carefully analyzed.
     (Six) to determine repair solutions and repair all impurities intrusion, pipe blockage, even traumatic cause of the malfunction is usually easy to check
On wheeled cranes noninvasive phase fault within the shell requires cleaning, lubrication, supplemented, adjusted, tighten the other maintenance that can eliminate the fault. The injury also pick up enterprises to determine fault to determine which parts need to be Hand pallet jacks sail * what needs to be repaired, according to the process and equipment conditions, and to determine the economics of repair parts for repair based on other factors to consider.
     Repair replacement parts ready, in strict accordance with the reverse order of removal recorded on the assembly process or system restore individual parts assembled one by one until the entire installation. Appropriate in the course of maintenance work simultaneously.
     For the repaired portion, functional tests should be carried out locally or overall performance test, only confirm the overall performance has met the requirements, the energy delivered.
     Some wheeled cranes member relative in prison is a very important component, such as arm, frame, slip girders, axle, with luffing rope hoisting, luffing telescopic cylinder and piston rod. From these components, parts, components, damage caused by the failure often result in serious text Buggy put Gang Here, the repair should take extra care of their cup tie.

Wheeled crane repairs

This article explains wheeled crane repair work, from understanding the phenomenon, determine the cause talk, to determine a repair solution has been

(A) failure to understand the phenomenon Crane parts during operation partner suddenly suddenly invaded or mountain now crawling, vibration, abnormal temperature rise and smoke, smell, sound, meter pointer jump swing, oil spills, leaks, leaking, leakage, control failure, etc., called Zhao fan malfunction.
     When the crane when a fault occurs, some phenomena can clearly be observed, and some hidden imperceptible. Manual stacker and inspection must be carefully observed in order to find the real source of it down. (Two) analyze the cause Yi Gu array of phenomena as the basis, in accordance with the rules and guns corporate failure by practical experience, control apricot find relevant information, list of similar phenomena whose failure may occur for various reasons, sub-Xin structure and [: operating principles, discussed to determine the real cause of the malfunction.
(Three) to determine demolition site
Failure Analysis is based to determine what caused the failure of the parts, and the powered palle ttruck of the system to determine the demolition inspection of the site.
(Four) demolition inspection
For determining the dismantling of the site, shall give rise to the ibility of failure, to determine the sequence of disassembly
Unloading operations, except in compliance with - 'suits mechanical disassembly required outside, but also pay attention to the following questions:
 1. Preparation for traveling to run dry stable frame bracket pad Zhao,  2. Standby system at ten non-working state
 Yi closed engine, release the hydraulic system and pneumatic system 44 residual Osteoform. In order to avoid injury.
 3. Reasonable profit and loading one hundred rejection Tools
 Clarify the demolition pits pieces or parts of the quality of the parts for the soft heavy lifting equipment should use reliable auxiliary operations. Reduce labor intensity is also conducive to human, machine safety. Cong on the need to use special removable parts and components, use the specified tools for repairs. Assembly demanding and difficult technical conditions disintegration devices shall

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 : Hand pallet jacks 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 . Latest repair methods mostly based polymer composites , and applications have more Wah Mei technology products , which has superior adhesion , excellent 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 .

safety devices, and several other aspects of adjustment.

Adjustment of wheeled cranes, including clearance adjustment, structural adjustment, safety devices, and several other aspects of adjustment.

    Adjustment of wheeled cranes, including clearance adjustment, structural adjustment, safety devices, and several other aspects of adjustment.
    (A) gap adjustment
    Preparation brakes, clutches and other working space, the axial thrust bearing axial clearance telescopic boom section and the gaps between the slider, the crane has been adjusted when the appearance is good, but the bit with the other will change due to wear . Therefore need to provide timely maintenance checks adjustment is to conform to the instructions on the required standard difficult.
    (Two) scissor pallet truck adjustment
    Some wheeled crane jib telescopic mechanism with rope pulley device reign with - 'After some time, the rope will be stretched. Should adjust r7J camp tail tight rope device to prevent telescoping less recovery phenomenon. Another lever steering system, such as the clutch pedal free travel should be timely adjustments in care overhaul qualified.
    (Three) safety device to adjust
    Wheeled crane is equipped with many safety devices. For example, a variety of instruments, amplitude, battalion commander, from the weight of other indicators, tilt, Guo Yang dependents, overload alarm, limit torque limiter and a variety of devices, each system safety valve protector. These devices are in use, reliability and sensitivity often change, in order to ensure operational safety, you should always check periodically adjusted its methods manual for each school. Wheeled cranes adjustment

) to have regular safety technical inspection , good pre- preparatory work

Bridge crane all electrical equipment enclosure should be grounded. If the car is not welded to the main beam track Hand pallet jacks be taken when welding ground measures . Ground wire cross-sectional area greater than 75mm2 available galvanized flat iron or bare copper or greater than 10mm2 30mm2 galvanized round . Cab or crane body ground position should be more than two . Any point on the crane to the power between the neutral point grounding resistance scissor pallet truck be less than 4Ω.
to have regular safety technical inspection , good pre- preparatory work .
Troubleshooting Maintenance
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 .

allowed just throwing things down from the car.

(10) has a main and auxiliary hook bridge crane, do not Electric pallet jack or decrease while the main and auxiliary hook (special exception).

(11) are not allowed on the object being lifted or hammering and welding work on the object below (there is support can be).

(12) must be a power outage, and after a power outage in the job switches hanging signs, before doing inspection or maintenance work. If you must live operations, shall have security measures to protect, and there is someone to take care of.

(13) allowed just throwing things down from the car.

(14) limit switches and interlock protection device should always check.

(15) is not permitted to touch the limit switch as a parking solution.

(16) lifting the brake problem, you can not lift heavy objects.

(17) was hanging objects are not allowed to run over the people or equipment.

(18) When welding unit of the crane, to specifically set the ground, do not allow the use of body ground.

(19) hooks in the lower limit position, the roll must retain the safety loops more turns.

(20) Cranes not collide with each other, but does not allow the use of a crane to push another crane to work.

(21) Scissor lift heavy objects, liquid metal, explosive and dangerous goods, you must first slowly lifting from the ground 100 ~ 200mm, trial brake reliability.

(22) repair and inspection of the lighting, the voltage must be 36V or less.

Precautions

(A) Each crane must be hung in a prominent place signs rated capacity.

(2) work, it was not allowed on the bridge or hook carrier.

(3) no operation license and drink are not allowed to drive cranes.

(4) the operation must concentrate, not allowed to talk, smoking or doing things unrelated.

(5) To the car clean; allowed misplacing Hand pallet jacks, tools, flammable, explosive materials and dangerous goods.

(6) does not allow the crane overload use.

(7) The following conditions must not lifting: Bundle is not strong; mechanical overload; signal is unknown; oblique; buried in the ground or frozen objects; someone was hanging on the object; no security protection measures flammable, explosive devices and Hand Pallet Truck materials; too full liquid items; rope does not meet the requirements for safe use; lifting mechanism is faulty.

(8) Crane in no obstacles when running on the line, hook or hanging objects spreader and bottom, must more than 2m from the ground. If you cross the obstacles, obstacles to be over 0.5m high.

(9) on the nominal weight lifting less than 50% of the objects, which allows simultaneous operation of both institutions; hanging from the weight of 50% greater than the rated object, only can an agency action.