The speed of the driving wheel is reduced, and the driving motor is seriously overloaded
The driving wheel speed of the electric stacker is reduced or the drive motor is seriously overloaded. The main reason is that the battery voltage is too low or the pile head contact resistance is too large. Cleaning the pile head can reduce the resistance. If the battery voltage is low, you need to replace a new battery; Carbon deposits between the commutator plates of the motor can cause short circuits between the plates, which can also cause this failure; the cause of this failure is improper adjustment of the motor brake, which causes the motor to run with brakes and the drive head gearbox and bearings lack lubrication or base cards. Resistance, motor armature short circuit. These problems can be solved by cleaning the commutator, adjusting the brake gap, checking the cleaning and refilling the lubricating oil, removing the card group and replacing the motor.
Excessive wear of gear pump and pump body
Excessive wear of the gear pump and pump body of the electric stacker, and improper high pressure of the overflow valve without the reversing valve will lead to weak lifting or inability to lift. The gear pump needs to be replaced, and improper high pressure can be readjusted. In addition to this, there are oil leakage in the hydraulic pipeline, excessive hydraulic oil temperature, jamming of the mast carriage, and low motor speed are also the reasons for lifting weakness or inability to lift. The solution is to check the hydraulic pipeline to repair Where the oil leaks, replace the unqualified hydraulic oil and check the cause of the increase in oil temperature, adjust the gantry carriage and check the motor failure and eliminate it.
The mast of the stacker is tilted and the mast is not balanced
The reasons for the difficulty of automatic tilting of the stacker mast or insufficient movement are: failure of the valve stem spring in the reversing valve; excessive wear of the inclined cylinder wall and sealing ring; excessive dirt accumulation in the inclined cylinder or too tight seals; piston jam The cylinder wall or the piston rod is bent. The solution is to replace the spring with a new spring if the spring fails; if the sealing ring is severely worn, it should be replaced immediately. If the cylinder is also severely worn, the cylinder needs to be replaced; the dirt in the cylinder must be cleaned and cleaned. As for the seal is too tight, it can be adjusted. The wearing parts of the piston should be replaced immediately if they are damaged.
The oil pump pressure is insufficient and the lifting speed is obviously slower
The oil pump pressure is insufficient or the speed is too slow because the sealing ring in the pump cover groove is damaged or the gear is worn seriously; the speed of the oil pump motor is reduced and the pipeline is blocked by foreign objects. Solve these failures and replace the damaged seal ring or gear. If the speed of the oil pump motor decreases, it may be caused by the incorrect position of the carbon brushes or carbon deposits between the plates. Therefore, you only need to clear or adjust the position of the carbon brushes; if foreign matter is blocked, just clean it.
The circuit is not working properly
Abnormal operation of the circuit may be caused by damage to the micro switch in the electrical box or improper position adjustment. You only need to replace the micro switch and re-adjust the position; if it is caused by the blown main circuit fuse or control electrical fuse, just replace the same model The fuse of the battery; battery voltage is too low, you can recharge; if the contactor contact singe or too much dirt causes poor contact, you can repair the contact, adjust or replace the contactor; the contact does not work, it may be the contactor coil The open circuit should be checked and solved immediately, or the contactor should be replaced.
