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How the Hydraulic Cylinder Works

The hydraulic cylinder works on the principle of hydraulic transmission, that is, oil is used as the working medium, and the movement is transmitted through the change of the sealing volume, and the power is transmitted through the pressure inside the oil.


1. Power part-converts the mechanical energy of the prime mover into the pressure energy of the oil (hydraulic energy). For example: hydraulic pump.


2. Execution part-convert the oil pressure energy input by the hydraulic pump into mechanical energy that drives the working mechanism. For example: hydraulic cylinders, hydraulic motors.


3. Control part-used to control and adjust the pressure, flow and flowing direction of the oil. For example: pressure control valve, flow control valve and direction control valve.


4. Auxiliary part-connect the first three parts together to form a system, which plays the role of oil storage, filtration, measurement and sealing. For example: pipelines and joints, fuel tanks, filters, accumulators, seals and control instruments.


The pressure applied at any point on a certain volume of liquid can be equally transmitted in all directions. This means that when multiple hydraulic cylinders are used, each hydraulic cylinder will pull or push at its own speed, and these speeds depend on the pressure required to move the load.


In the case of the same carrying capacity range of the hydraulic cylinders, the hydraulic cylinder carrying the smallest load will move first, and the hydraulic cylinder carrying the largest load will move last.


In order to make the hydraulic cylinder move synchronously so that the load is lifted at the same speed at any point, it is necessary to use control valves or synchronous lifting system components in the system.