There are many manifestations of the failure of the excavator, and the causes and inspection methods of the weakness of the excavator arm have been introduced before. Excavator walking weakness is also a more difficult problem, then when the excavator walking weakness how to do? What causes it?
There are many reasons for excavator walking weakness, such as: excavator center rotary joint failure, walking control system (such as pilot oil circuit, control valve, etc.) failure, walking motor serious leakage, walking motor safety valve imbalance, engine overload caused by weakness and so on. In order to eliminate this fault in time, the following checks are generally required：
No.1: The rotary joint leaks:
One is due to the walking weakness caused by the serious leakage of the rotary joint. Hydraulic oil from the upper part of the excavator to the lower part of the walking device, must pass through the rotary joint, when the rotary joint once leaked and damaged, there will be a part of the high-pressure oil flow back to the oil pipe, resulting in weak walking, affecting the normal operation of the excavator. Therefore, it is necessary to check it to determine whether the fault is caused by leakage.
No.2: Various valves are faulty
The inspection of the control valve is also an essential link, safety valve, throttle valve, check valve, balance valve, relief valve, walking reversing valve, etc., any valve failure may cause the excavator walking failure. Control valve failure performance
There are faults such as spool stuck, short stroke, large gap between spool and valve hole, and reduced pressure of safety valve, which will cause weakness of right walking.
No.3: Inspection of walking motor
When the walking motor is seriously leaked, it will also cause walking weakness. The specific exclusion check method is: the right track can be supported by the scoop, and the right walking joystick can be operated in the idle state of the engine. When the driving wheel does not rotate, you can hear the sound of “hiss, hiss” in the right walking motor, and then touch the oil pipe and feel the oil flow in the pipe. As the joystick continues to move, the track begins to turn slowly, and the “hiss, hiss” sound increases as the engine accelerates. Check left walking in the same way for the above abnormality.
No.4: Check the travel reducer
The gear reducer or poor lubrication is also one of the reasons for the failure of walking. When checking the walking weakness fault, if the walking horse reaches the normal power transmission between the driving wheels and the oil temperature, oil level and oil quality of the walking deceleration device are normal, it is said that there is no fault in the walking deceleration device, and the walking weakness fault has nothing to do with the walking deceleration device.
Summary: Of course, how to remove the walking failure of the excavator should be solved one by one according to the actual situation, and first determine whether the working device and the rotating structure are working normally. In the next I will introduce the failure reasons for the weakness of the rotation.
No.5: Understand the excavator fault code
Excavator in the daily operation, due to wear, poor working environment, maintenance is not timely, improper operation, etc., there will be a variety of problems and failures, excavator electrical system is responsible for detecting the failure of each system of excavator, and display on the excavator display screen, and remind the operator which part of the excavator failure.
At first, these faults are small problems, as long as they are found and dealt with in time, they will not have any impact on the excavator; However, if these minor faults are ignored and continue to be used, it will cause a major mechanical accident and may endanger the life of the operator.
Therefore, if the driver knows the meaning of the fault represented by these fault codes and stops in time, the accident can be prevented.
Post time: Nov-18-2024