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.