When we use underground explosion-proof loaders, we are often affected by various external factors. A common phenomenon is that the loader produces insufficient driving force. So problems like this will increase the cost for us to extend the construction period, so let's analyze the reasons for this problem.

　　Reasons for insufficient drive of underground explosion-proof loaders：

　　①The pressure of the gear shift system of the loader is too low, and the load will slip. Check the variable-speed pump, variable-speed valve, etc. according to the method of checking low pressure. The transmission pressure is normal but the work is still weak, and oil is leaking from the motor. This phenomenon is generally caused by damage to the rotating oil seal of the torque converter, or damage to the O-ring seal between the cover wheel and the pump wheel.

　　②The variable speed pressure is normal, the work is weak, the oil temperature is high, and there is aluminum foam at the bottom of the oil. This failure is caused by damage to the pump wheel, guide wheel, or Ⅰ and Ⅱ turbines of the torque converter. Generally, the torque converter should be disassembled for inspection.

　　③The gear shift pressure is normal, and walking is okay, but he can't eat the dirt. This phenomenon of underground explosion-proof loaders is mostly caused by the damage of the overrunning clutch, such as the failure of the three compression springs of the overrunning clutch, the fracture of the isolating ring, the serious wear of the roller working surface of the inner ring cam or outer ring gear, etc., generally should be disassembled and replaced Parts or large overrunning clutch assembly.

　　④Although the variable speed pressure can reach normal, the needle swings and is unstable, the variable speed pump has abnormal noise, and the work is weak or starts to be normal. After a period of time, it will be weak. This failure often occurs after the replacement of the variable speed pump or the overhaul of the double variable assembly. The reason is that the low-pressure pipeline of the variable-speed pump is not tightly sealed, causing a large amount of air intake and insufficient oil supply to the torque converter.

　　When the underground explosion-proof loader has insufficient drive, we should find out the cause of the problem as soon as possible and solve it in time. At that time, you can investigate one by one according to the reasons we introduced in the above article. Also pay attention to the maintenance work of the loader in normal times to make the drive run normally and reduce the loss as much as possible.