1, hydraulic support hydraulic cylinder sealing device material

Hydraulic support hydraulic cylinder sealing device is affected by the material, it is easy to cause leakage fault. If the material of the sealing device is too soft, the sealing parts will be squeezed into the sealing gap during the working process and there will be different degrees of damage; If the material of sealing device is too hard, good sealing effect cannot be obtained in normal working process, thus causing hydraulic cylinder leakage fault.

2. Installation of hydraulic cylinder sealing device of hydraulic support

Due to the high requirements on the sealing effect of the hydraulic support cylinder, the size is designed in the installation process to meet the installation requirements. At that time, if during the installation process, the size accuracy of the seal does not meet the requirements or the surface is too rough, it will also cause the leakage fault of the hydraulic support cylinder.

3. The surface of the hydraulic cylinder sealing device of the hydraulic support is damaged

During the working process, the hydraulic support cylinder will be affected by some impact or surface strain, which will make it unable to work normally and cause leakage of the hydraulic support cylinder.

4, hydraulic support hydraulic cylinder sealing device working environment

The working environment in underground coal mine is easy to cause the pollution of the hydraulic support cylinder. Some particles will enter the cylinder cylinder and the surface of the seal, and they will follow the movement of the hydraulic cylinder to continuously grind the seal, thus making it effective and causing leakage failure.

5. Pollution degree of hydraulic cylinder of hydraulic support

The sealing device of hydraulic support cylinder will be aged in the long-term use process, and even accelerate the aging speed of the sealing device in some harsh environments, thus reducing the sealing effect and promoting the leakage fault of the hydraulic support cylinder.