Precautions for loading machine-vigilance-small common sense: The article has introduced a detailed introduction to the analysis of common loading mechanism system failures such as weak pressure on the pressure gauge, lack of braking force, weakness after braking, braking cards, and braking cards.Take a closer look at the following article to understand how to maintain and maintain the loader!
Purpose of the presence of the loader
1. Through the tracking inspection of the loader, it is planned to stop, and the maintenance and repair arrangements of the gearbox are well maintained.
2. Prevent major mechanical failures and damage to components related to them, repair before the failure germination to save a large amount of maintenance costs.
3. Make the whole machine parts have a long service life, improve the efficiency of equipment machines, and maintain good working performance.
4. Reduce maintenance difficulty and workload.
Loader maintenance
1. Daily maintenance
The driver is completed by itself, and it is carried out before and after the car is carried out every day.The content of its homework is:
1. Check the oil surface of the engine, which should be refueling than the oil label ruler.
2. Check the fuel tank oil surface;
3. Check the tightness and sealing of the engine, torque, hydraulic pump and steeringr, and whether there is an overheating phenomenon;
4. Check whether there are oil leakage, water leakage, air leakage, liquid, leakage, etc.;
5. Check the phenomenon of loosening or loss of bolts in the transmission shaft and universal festivals, hinges, etc.
6. Keep car capacity, car appearance cleaning, oil -free, soil, debris, etc.;
7. Check the abnormal phenomenon such as abnormal sounds and shake in the whole machine.
Second, weekly maintenance
Professional maintenance personnel are performed once a week. In addition to completing the daily maintenance content, it is necessary to complete:
1. Come on according to the prescribed parts and the prescribed oil (fat) cards;
2. Cleaning oil filter, fuel crude filter and empty filter element;
3. Check and adjust the tightness of the driving belt of the fan and the generator;
4. Check and add the oil in the oil pump body oil;
5. Check the battery electrolyte surface and density, and the electrolyte surface on the polar plate 10 to 15mm, and distilled water should be added.
6. Check and adjust the free itinerary of each pedal;
7. Check the phenomenon of stagnation and flexibility for check -up rods such as throttle, parking braking, transmission, etc.
3. Monthly maintenance
Professional maintenance personnel will be performed once a month. In addition to completing the content of the day and weekly maintenance, they must also be completed:
1. Washing machine oil filter and fuel fine filter element;
2. Check the air pressure and wear of the tire. The air pressure is 0.27 ～ 0.39MPa (2.8 ～ 3.0kgf/cm2).
3. Check whether the welds that are strenuous in the frame, work installations, etc. are loses welding and whether there is a cracking phenomenon.
Fault prevention and daily maintenance of wheeled loader gearboxes
The gearbox is one of the important transmission components of the wheel loader. It is responsible for transmitting the speed and torque from the engine to the final transmission system to change the transmission ratio between the engine and the wheels, and achieve the forward and backstock control of the loader.It can also cut off the motivation of the walking device when the engine is running to meet the needs of the loader operation and driving, and facilitate the starting and parking safety of the engine.
However, during the work of the loader, the gearbox failure rate caused by improper use and maintenance has always been high, especially in the use of non -strict obeying maintenance procedures, lack of timely inspection and daily maintenance, will accelerate the transmission damage damage in time, which will accelerate the transmission damage.The formation of faults even expands the harmfulness of the fault.
Common fault analysis of the loading mechanism system
1. The pressure gauge pressure rises slowly
Main reasons: (A) Tube leakage; (B) The work of the air pump is abnormal; (C) the one -way valve rust and stagnation;
Failure elimination method: First, the pipeline leakage should be excluded, and the working state of the air pump should be checked.Remove the air pump out of the air pipe and press the air in the air with your thumb. If the exhaust pressure is low, it means that the air pump is faulty.If the gas pump works well, check the oil -water separator to put the oil stuff or regulating valve to avoid bypass and eliminate the failure by checking.Finally, check the two unidirectional valves in the three -link connector. The unidirectional valve card stagnation will cause the gas tube to not be intake or intake slowly.In this way, the loading mechanism system failure can be solved.
2. Insufficient braking force, weakness
Main reasons: (A) The brake leakage; (b) the air in the brake oil road; (C) the hub oil is damaged, and there is oil pollution on the dwelling plate;The air pressure adjustment is too low.
The above loading mechanism system faults can be excluded by repairing, adjusting or replacing parts according to their respective reasons.
3. Run off after braking
The direct reason for running is caused by the varying brake torque of the wheels on both sides. Common causes of failure: (A) The oil stains of brake clamps are severe, and the friction system is severely reduced, resulting in unbalanced brake torque. At this time, the system should be cleared.Oil stains on the dynamic tongs; (b) Pistons of pumps can not work.Static car stepping on braking, observing the working situation of the sub -pump, and dismantling it.
4. brake card issuance
Failure phenomenon: The loader starts and walks hard. After parking, touch the pliers with your hands, and the clamp plate is heated.Main reasons: (A) The rubbing of the friction piece is thinner, the dustproof ring is damaged in water, and the piston rust is stagnant; (b) the reset spring in the intensive pump is weak or broken, and the high -pressure oil cannot be added.
5. When stepping on braking, there is an oil mist spraying out
(A) The brake light switch is damaged, and the high -voltage oil is sprayed out of the switch interface, and the switch can be resolved.(B) The length of the pump pump is too large.This situation may occur when the newly replaced the force pump assembly. The cause of the failure of this loading mechanism system is: the piston rod is adjusted for too long, resulting in the work of the pump.The holes return to the Li Li pump and spray.Pistons should be measured during installation to determine the length of the piston rod.

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