1. Misoperation or action failure of
the hydraulic cylinder
The causes and treatment methods of
the hydraulic cylinder are as follows:
(1)
（hydraulic cylinder)The valve core is stuck or the valve hole is blocked. When the valve core of flow valve or direction valve is stuck or the valve hole is blocked, the hydraulic cylinder is prone to misoperation or action failure. At this time, check the oil pollution; Check whether dirt or colloidal sediment blocks the valve core or blocks the valve hole; Check the wear of the valve body, clean and replace the system filter, clean the oil tank and replace the hydraulic medium.
(2)
(hydraulic cylinder)The piston rod and cylinder barrel are stuck or the hydraulic cylinder is blocked. At this time, no matter how to operate, the hydraulic cylinder does not act or acts very little. At this time, check whether the sealing of piston and piston rod is too tight, whether dirt and colloidal sediment enter: whether the axis line of piston rod and cylinder barrel is aligned, whether vulnerable parts and seals fail, and whether the load is too large.
(3) The hydraulic system control pressure is too low. The throttling resistance in the control pipeline may be too large, the flow valve is not adjusted properly, the control pressure is inappropriate, and the pressure source is disturbed. At this time, check the control pressure source to ensure that the pressure is adjusted to the specified value of the system.
