The hydraulic bearing fixture can not drive the load during the process of work. The main performance of the hydraulic bearing fixture is that the piston rod is not in a standstill, or the thrust is insufficient or the speed is declining. The main reason is the internal leakage of the hydraulic bearing fixture. The internal leakage of the equipment includes the hydraulic bearing fixture seal. , Piston rod and seal cover seals and piston seals are evenly worn out.
The seal leakage of the hydraulic bearing fixture seal cap and piston rod may be due to the possible occurrence of wrinkles, wear, deterioration, tearing, aging, and deformation of the seal. In this case, the seal needs to be replaced immediately.
The main reason for the excessive wear of the piston seal of the hydraulic bearing fixture is due to improper adjustment of the speed control valve, which effectively causes excessive back pressure, improper installation of the seal, or hydraulic fluid contamination. The foreign material enters during assembly. And the quality of the sealing material is not good.
The hydraulic bearing fixture leaks from its hydraulic circuit, which effectively includes leakage of valves and hydraulic lines. The method of overhaul is to effectively check the valve and then effectively eliminate the leakage of the hydraulic connection pipe.
The hydraulic oil in the hydraulic bearing fixture bypasses the overflow valve and bypasses the oil tank. If the overflow valve enters the dirt and jams the valve core, the overflow valve will always open. This will allow the hydraulic oil to effectively bypass the overflow valve. The direct flow back to the tank results in no oil entering the hydraulic bearing fixture.
When the hydraulic bearing fixture is running, if the load is too large, although the pressure of the relief valve has reached the maximum rated value, the hydraulic bearing fixture still can not get the thrust needed for continuous operation, and if the adjustment pressure is low, it will Because of its lack of pressure, it can't reach the required vertebral force.