(1)100 tonssingle-arm hydraulic pressThe valve plug is stuck or the valve hole is blocked. When the flow valve or directional valve spool is stuck or the valve hole is blocked, the hydraulic cylinder is prone to failure or failure. In this case, check for oil contamination; check whether dirt or colloidal deposits are stuck in the valve plug or block the valve hole; check the wear of the valve body.
(2) The piston rod of the single-arm hydraulic press is stuck with the cylinder or the hydraulic cylinder is blocked. At this time, regardless of the operation mode, the hydraulic cylinder will not move or move slightly. At this time, check whether the piston and piston rod seal of the single-arm hydraulic press are too tight, whether dirt and colloidal deposits are entered: whether the axis of the piston rod and cylinder is centered, and whether the wearing parts and seals are invalid.
100吨单臂液压机动作失灵的原因及处理方法
(3) The control pressure of the hydraulic system of the 100-ton single-arm hydraulic press is too low. The throttling resistance in the control pipeline may be too large, the flow valve is improperly adjusted, the control pressure is inappropriate, and the pressure source is disturbed. At this time, the control pressure source should be checked to ensure that the pressure is adjusted to the specified value of the system.
(4) Air enters the hydraulic system of the single-arm hydraulic press. Mostly because of system leaks. In this case, check the liquid level of the hydraulic oil tank, the seals and pipe joints on the suction side of the hydraulic pump of the single-arm hydraulic press, and whether the suction filter is too dirty. If so, add hydraulic oil, handle seals and accessories, and clean or replace the strainer.
(5) The initial movement of the hydraulic cylinder of the single-arm hydraulic press is slow. At low temperatures, the hydraulic oil has a large viscosity and poor fluidity, resulting in slow movement of the hydraulic cylinder. The improvement method is to replace the hydraulic oil with better viscosity and temperature performance, and at low temperature, the heater can be heated by the heater or the single-arm hydraulic machine itself to increase the oil temperature at startup.