Hydraulic cylinder
2022-09-13
Hydraulic cylinder What is the working principle of a hydraulic cylinder? Understanding how a hydraulic cylinder operates makes troubleshooting and maintenance easier when malfunctions occur. Below, the hydraulic cylinder manufacturer explains the operating principle of a hydraulic cylinder.
What is the working principle of a hydraulic cylinder?
Oil serves as the working fluid, transmitting motion through changes in the sealed volume and conveying power via the pressure within the oil.
1. Power Unit
It converts the mechanical energy of the prime mover into pressure energy (hydraulic energy) of the oil. For example: a hydraulic pump.
2. Effective Part
The input oil pressure of a hydraulic pump can be converted into mechanical energy to drive working mechanisms, such as hydraulic cylinders and hydraulic motors.
3. Control Section
Used to control and regulate oil pressure, flow rate, and flow direction. Examples include pressure control valves, flow control valves, and directional control valves.
4. Auxiliary Parts
The first three sections are interconnected to form an oil storage, filtration, metering, and sealing system. For example: pipelines and fittings, oil tanks, filters, accumulators, seals, and control instruments.
In a given volume of liquid, pressure applied at any point is transmitted equally in all directions. This means that when multiple hydraulic cylinders are used, each cylinder will extend or retract at its own speed, depending on the pressure required to move the load.
In the operating principle of hydraulic cylinders, when the load‑carrying capacity is the same, the cylinder bearing the smaller load moves first, while the cylinder bearing the larger load moves later.
In this system, control valves or components of the synchronized lifting system are used to synchronize hydraulic cylinders, enabling the load to be lifted at the same speed at any point.
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