Among many conventional hydraulic components, the internal structure of the hydraulic cylinder itself is relatively simple, mainly using oil as the medium, and the change of the closed space in the cylinder drives the change of the internal pressure, thereby transmitting power for the transmission movement. Moreover, the hydraulic cylinder can realize smooth reciprocating motion without installing a deceleration device.

First, the basic structure of the hydraulic cylinder

A complete hydraulic cylinder must include the following basic components: the main structure is the cylinder block and the cylinder head, and the cylinder block is often called the cylinder barrel; the second is the piston and the piston rod, which are the core components for reciprocating motion; the last is the lifting To a certain auxiliary role of the sealing device, buffer device and exhaust device.

In actual use, hydraulic cylinders do not necessarily need to be equipped with buffer devices and exhaust devices, and whether they are needed is mainly determined according to specific application scenarios and user needs.

Second, the working principle of the hydraulic cylinder

The working principle of the hydraulic cylinder has been introduced at the beginning of the article. This part mainly analyzes the working principle of each part of the hydraulic cylinder in more detail.

1. Power components

The power component of the hydraulic cylinder mainly refers to the internal hydraulic pump. The hydraulic pump can convert the mechanical energy transmitted by the motor into the pressure energy inside the oil pressure, also called hydraulic energy.

2. Executive components

Hydraulic cylinders, hydraulic motors, etc. belong to the actuators of hydraulic cylinders. Their working principle is to convert the hydraulic energy transmitted by the power components of the hydraulic pump into mechanical energy that can drive the working mechanism through a series of operations.

3. Control elements

The control components of the hydraulic cylinder can flexibly control and adjust the internal pressure, flow and flow direction of the oil. Only when components such as pressure control valves, flow control valves and directional control valves are used in combination can the hydraulic cylinder control the oil. control effect.

4. Auxiliary components

Auxiliary components are also an important part of the normal work of the hydraulic cylinder. There are many types of auxiliary components, but the volume of a single component is small. Auxiliary components such as joints, fuel tanks, filters, accumulators, and sealing controllers jointly undertake the functions of oil storage, filtration, measurement, and sealing control.

3. Maintenance of hydraulic cylinder

After the hydraulic cylinder product is put into use, its frequency of use is very high, so how to ensure that the hydraulic cylinder can still guarantee good working performance during long-term and high-frequency use? Doing a good job in the maintenance of hydraulic cylinders is an ideal solution.

1. After the hydraulic cylinder is used for a period of time, the hydraulic oil in the cylinder should be replaced regularly. At the same time, it is necessary to clean or replace internal and external parts such as filter screens and sealing rings to ensure the cleanliness and smoothness of the cylinder.

2. The hydraulic cylinder needs to be fully preheated before use, that is, it must complete at least 5 strokes of reciprocating motion under no-load conditions before operating with load. This operation can effectively drain the air, water and other media inside the cylinder system, avoid gas combustion in the cylinder and internal leakage of the cylinder during operation, and prevent damage to the internal seals of the hydraulic cylinder.

3. When using the hydraulic cylinder, you need to pay special attention to the temperature inside the cylinder. If the internal seal is exposed to high oil temperature for a long time, it will cause permanent deformation of the seal, which will shorten the service life of the hydraulic cylinder and even cause the cylinder to fail completely.

4. For the piston and piston rod, care should be taken not to scratch or bruise the outside. At the same time, always check the connection of external screws, bolts and other fasteners. If there is any looseness, it must be tightened immediately.