In drilling engineering, sometimes the torque of power head is insufficient and the rotation speed is low in rotary excavation. Many people think that this is because the soil layer is too strong, in fact, this is often caused by insufficient power of the rotary excavator. So how can we eliminate this fault?
rotary excavator
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If the rotating speed of the rotary excavator is low, but it is normal when reversing, first check whether the engine is in normal working condition. If yes, the fault is generally due to insufficient hydraulic oil pressure, so the torque of the rotary excavator is reduced and the rotation speed is low due to the decrease of hydraulic oil flow or the damage of mechanical transmission decoration.
In addition to hydraulic oil, it is also possible that the pressure of the overflow valve on the makeup valve of the power head oil seat is too small; Overflow valve pressure of power head control valve on main valve is too small; Or cavitation, internal leakage of the power head motor and failure of the power head reducer;
Clean the check valve and overflow valve on the oil replenishing valve of the power head in time. Adjust the overflow valve and replace the compensation valve. If the fault is still not eliminated, the problem of the failure of the makeup valve and the overflow valve can be eliminated.