Mine loader is a kind of commonly used engineering machinery, and the working environment is relatively bad. When the mine loader is in field operation, due to the influence of many objective factors such as environment, temperature and construction conditions, the phenomenon of insufficient driving force will inevitably appear in the use of the equipment. This not only affects the normal work efficiency, but also increases the construction cost, and will have a serious impact on the construction plan and progress. Therefore, it is very important for the construction personnel to judge the fault of the loader.

礦用裝載機的驅(qū)動不足的原因：

Reasons for insufficient driving of mine loader:

①裝載機變速系統(tǒng)壓力太低，負荷大會出現(xiàn)打滑的情況。按檢查壓力低的方法來檢查變速閥、變速泵等。變速壓力正常但工作仍然無力，并且從馬達處向外冒油。此現(xiàn)象一般是變矩器旋轉(zhuǎn)油封損壞，或罩輪與泵輪之間的o形密封圈出現(xiàn)損壞而造成的。

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

②變速壓力正常，工作無力，油溫高，油底有鋁沫。這種故障是變矩器的泵輪﹑導輪或Ⅰ﹑Ⅱ級渦輪出現(xiàn)損壞造成的，這種情況建議拆解變矩器進行檢查。

② The transmission pressure is normal, the operation is weak, the oil temperature is high, and there is aluminum foam at the oil bottom. This fault is caused by the damage of the pump wheel, guide wheel or stage I and II turbines of the torque converter. In this case, it is recommended to disassemble the torque converter for inspection.

③如果是變速壓力正常，行走可以，但吃土無力。這種現(xiàn)象大多是超越離合器損壞而造成，如超越離合器的三條壓縮彈簧失效、隔離環(huán)斷裂、內(nèi)環(huán)凸輪或外環(huán)齒輪的滾柱工作面磨損比較嚴重等，一般應該拆解、更換零件或大超越離合器總成。

③ If the speed change pressure is normal, walking is OK, but eating soil is weak. This phenomenon is mostly caused by the damage of the overrunning clutch, such as the failure of three compression springs of the overrunning clutch, the fracture of the isolation ring, and the serious wear of the roller working surface of the inner ring cam or outer ring gear. Generally, the parts or the large overrunning clutch assembly should be disassembled and replaced.

④變速壓力雖然可以達到正常，但表針擺動﹑不穩(wěn)，變速泵會出現(xiàn)異響，工作無力或開始正常，過一段時間后就無力，這種故障常發(fā)生在更換變速泵或雙變總成大修之后。原因是變速泵低壓管路出現(xiàn)密封不嚴，引起大量進氣，使變矩器供油不足導致的。

④ Although the variable speed pressure can reach normal, the gauge needle swings and is unstable, and the variable speed pump will make abnormal noise, and its operation will be weak or start to be normal. After a period of time, it will be weak. This fault often occurs after replacing the variable speed pump or overhauling the double transformer assembly. The reason is that the low-pressure pipeline of the transmission pump is not tightly sealed, resulting in a large amount of air intake and insufficient oil supply to the torque converter.

對于礦用裝載機而言，如果變速壓力是正常的，工作開始還可以，但過一段時間后就無力，并且越加油門車越不走，緩抬油門或停一會后才能走，應該清洗裝載機變速箱的油底殼，因由于臟物堵死濾網(wǎng)，使油吸不上來，也有可能會造成這種故障。

For the mine loader, if the speed change pressure is normal, the work can start, but it will be weak after a period of time, and the more the refueling door car does not go, the more slowly lift the accelerator or stop for a while before going. First, clean the oil pan of the gearbox of the loader, because the filter screen is blocked by dirt, so that the oil can not be absorbed, which may also cause this kind of fault.

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