The working principle of hydraulic cylinder

The maximum working pressure of the hydraulic cylinder is set by the overflow valve, the working pressure of the hydraulic cylinder is set by the pressure reducing valve, and the cylinder head can be used to clamp the workpiece. When the piston of the hydraulic cylinder goes down, the pressure reducing valve obtains a certain stable value lower than the set pressure of the relief valve. During the return stroke, the oil in the upper cavity of the hydraulic cylinder can be returned to the tank through the one-way valve. The maximum working pressure of the hydraulic cylinder is set by the overflow valve. The outlet pressure of the pressure reducing valve is set by the valve itself, when the valve remote port and the valve port

When connected, the outlet pressure of the valve is adjusted by the valve body. The valve can be a remote pressure regulator with small flow. When the hydraulic cylinder piston moves to the right, the pressure is adjusted by the pressure reducing valve, and when it moves to the left, its pressure is adjusted by the pressure reducing valve. A small-size proportional pilot pressure valve is connected to the remote control port of the pressure reducing valve, so that the outlet pressure of the pressure reducing valve can be steplessly adjusted within a certain range. This method is easy to realize the remote control of the working pressure of the pressure reducing valve. The use of a proportional pressure reducing valve to reduce pressure can not only achieve stepless adjustment of the pressure at the outlet of the pressure reducing valve, but also greatly reduce the number of hydraulic components, simplify the system and improve control performance

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