For the repaired portion

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 be dismantled into a complete unit.
    ( Five ) to 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 hand stacker 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 replaced 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 .

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.

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.

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.

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

Classification by drive

Press the drive can be divided into mechanical and hydraulic grab grab two categories.
Hydraulic grab crane
Hydraulic grab itself with the opening and closing structure, generally with Hand stacker cylinders driven by a plurality of hydraulic jaw plates, also called hydraulic claw grab. Hydraulic grab the hydraulic class-specific equipment used widely.
Mechanical gra
Grab mechanical structure itself is not configured to open and close, usually driven by a rope or rod force, operating characteristics can be divided by double rope grab and single-rope grab, the most commonly used is the double rope grab.
Two rope grab opening and closing of supporting rope rope around the supporting bodies, respectively opening and closing mechanism of the roll. Double rope grab, reliable, easy to operate, high productivity, widely used. Using two sets of double rope after a four rope grab, work processes and the same double rope grab.
Support single rope grab ropes and opening and closing with a rope with a rope. The rope through a special locking device for opening and closing alternately supportive role. Grab the single rope winding mechanism is relatively simple, but the production is low, a large number of loading and unloading operations rarely used.

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.

high temperature, wear and other properties

 Manual Stacker also called manual Hand stacker stacker, is the use of sliding movement of manpower Simple hydraulic forklift. It has a forklift basic functions: fork to take goods and raised to a certain height. Manual Stacker lifting mechanism are: mechanical hand-cranked elevator, manual hydraulic elevator two kinds. Where hand-cranked suitable for lifting smaller models, usually in the 300kg less job requires; while the hydraulic lifting its load-bearing capacity, are widely used in a variety of load-bearing capacity of the manual hydraulic stacker design. General Manual Stacker specifications: 400kg, 500kg, 1T, 1.5t, 2.0 tons, 3 tons, and so load. Manual Stacker used in factory workshops, warehouses, loading and unloading efficiency is not critical, but it requires a certain stacking, handling, loading, lifting height of the occasion. Workers make manual hydraulic stacker Features: Heavy "C" shaped steel door frame strong safety; built-stroke bypass valve cap; complies with the European standard EN 1757-1:2001; monolithic Fork makes a higher carrying capacity, vision better; easy maintenance, low maintenance costs; lightweight, flexible features, one-person operation, suitable for single person operation; can be customized according to the site using fork length and width; exterior colors according to customer request; frame robust design, strong bearing capacity, heavy-duty design; castors with brakes; unique technology systems from the fast; compact design, rugged, precision steel.Stainless Stacker corrosion resistant, high strength, lightweight, long life and other excellent features. In recent years, stainless steel stacker in medicine, food, scientific research and other special industries has been widely used, with the development of machines and modern workshop clean and sanitary requirements, stainless steel stacker will have a more broad application prospects. From the consumer situation, at present, China's apparent consumption has reached the world's highest level of total global consumption of nearly 1/4, the per capita steel consumption reached 3.4KG, leapt to the forefront of developing countries. However, consumption growth rate gradually slowed down from spending more than 30% average annual growth rate of ultra-high-speed development stage, into a growth rate of 6.43% of the current phase of steady development.
Stainless steel itself because of its resistance to corrosion, high temperature, wear and other properties, in our focus on the development of the energy, petrochemicals, power, mining and other fields will be more actively play its role. Today, stainless steel stacker increasing involved in the field, in which the water industry, construction and logistics industry, environmental industry, the demand for industrial facilities will also be increasing every year.
Water industries, water in its contamination during storage and transportation problems has been growing attention. Large number of proven, stainless steel water preparation, storage, transportation, purification, regeneration, water desalination and other water industry best material. Its advantages are: corrosion, shock, water and sanitation (no rust and patina), light weight (to reduce 1/3), easy maintenance, long life (can be used for 40 years), life cycle cost (LCC) is low, are recyclable green materials.