Full hydraulic is an important development direction of modern forklift crane. For example, the slewing mechanism of slewing transmission and motion control of hydraulic forklift crane mainly depends on the hydraulic system. Therefore, the common faults of slewing mechanism of hydraulic system are firstly involved. The following is the explanation of the relevant knowledge of this aspect of the fault.
Unable to make the system pressure normal, hydraulic motor failure, power failure, normal output, maintenance or replacement. Reducer failure, affect the transmission, inspection, adjustment. Overload review to avoid overload. Overflow valve, manual control valve failure, check and adjust.
Unable to rotate the system pressure normally, rotate the gear or worm gear of the reducer, the worm is damaged, check and repair. The plunger or bearing of the pressure motor is seriously stuck or worn. Check and repair. Hydraulic motor output shaft disconnected and replaced. The pressure of the swing hydraulic system is low.
The first way to solve the problem is adjustment. There are two kinds of adjustment: first, when there is a load, the rotation should be stopped until the reload is normal. Secondly, the pressure gauge is used to adjust the pressure of the relief valve according to the instruction manual (the rotating pressure is related to the model); Second, hydraulic motor and control valve maintenance, replacement of worn parts.