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Analysis and introduction of common faults and treatment methods of marine hydraulic motor

2020-11-12 H:21:40
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Hydraulic motor is mainly used in construction machinery, mining machinery, construction machinery, etc. in these work, the low-speed high torque hydraulic motor is commonly used. Because of the large torque and enough force, the low-speed high torque hydraulic motor is used to drive the walking or lifting mechanism.

If the speed of marine hydraulic motor decreases, the reasons may be as follows:

(1) The pump is damaged, and the pump body is overheated and noisy.

(2) When the safety valve is opened, the valve will sound or hiss, causing local overheating.

(3) The control valve is closed tightly or the oil supply and return system is not smooth, and local overheating.

(4) The crankcase of hydraulic motor leaks excessively, the leakage of single oil drain pipe is too large, and the oil level is on the high side.

(5) The valve chamber is overheated due to excessive leakage of the valve, and it is very hot to touch it by hand.


Hydraulic motor

The methods are as follows:

Replace the pump and study the cause of its loss, check the valve, if it is in good condition, check the system pressure, check and correct it. For the fourth point, the following methods can be used to deal with it:

a. Check oil viscosity and working temperature.

b. Check the sealing condition of cylinder piston.

c. Check the condition of the ball joint.

d. Check the condition between the connecting rod and the surface of the eccentric wheel and the sealing condition of the valve.


 


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