Four reasons why Mining Hoist Winch is under-stressed
1. The oil pump is overheating.
Causes: ① the oil pump is worn or damaged; ② the viscosity of the oil is too low;
Elimination method: ① Repair or replace with new one; ② Use hydraulic oil with recommended viscosity.
2. The oil pump is not turning properly.
Cause: The electrical wiring is incorrect;
Elimination method: Correct the rotation direction of the oil pump.
3. The oil pump speed is too low.
Cause: The motor is faulty;
Elimination method: Eliminate the fault.
4. The Mining Hoist Winch hydraulic station leaks from the high pressure side to the oil return side or the oil cannot pass normally.
cause:
① Insufficient exhaust of proportional relief valve;
② The proportional relief valve is not closed, and there are dirt or damaged parts;
③ The solenoid valve is dirty or damaged;
④ The spool of the direct-acting relief valve is stuck or damaged by dirt;
⑤ The valve core of the pressure reducing valve is stuck or damaged by dirt.
