Why is the hydraulic cylinder abnormal wobble?

The hydraulic cylinder in the process of using the occasional occurrence of abnormal vibration, analysis of its causes are as follows: the attack by seal argument sound and vibration, the soldiers will be thrown face high pressure caused by mechanical strain favoured sound.

The cause should be parking. When the sliding surface is too tight, it becomes a bigger event. When on this abnormal sound, the formation of dry argument sound, or by picking strain, or may lead to the sintering of sliding surface, sliding metal surface acoustic defense oil film is destroyed, often with a hissing sound of the abnormal sound, pressure oil pressure oil chamber through the high-speed back oil chamber leakage flaw, piston seal relax, because the wall swell, internal leakage will occur very sound.

In order to adjust the speed of the hydraulic cylinder, four one-way valves were accepted, and the moving scene appeared. When the manual reversing valve is in the middle position, the oil can flow along the speed regulating valve, and the piston will flow to return to the oil regardless of the flow, and when the piston flows to the right, the working pressure of the piston is adjusted by the relief valve.

Realizing two way speed regulation of inlet and return oil. Try to wipe off the diagnosis. The hydraulic cylinder can not be positioned to terminate, and the speed is regulated by the speed regulating valve. Therefore, the speed of the piston is very important.

The piston flow into an oil left in the economical speed, and speed control valve and four check valves, and adopts hydraulic control one-way valve lock, how to make the hydraulic control one-way valve effectively blocked, hydraulic control valve control circuit can not adhere to the pressure to lock.

Therefore, when the valve is switched to the middle position, that is, the hydraulic control check valve is still in the pressure of the existing pressure valve, so the valve from the middle position to flow, until the pressure relief valve after the pressure relief valve, the hydraulic cylinder can not necessarily move the inevitable situation.