Sealing part structure for hydraulic cylinder with good sealing effect

Abstract

The invention discloses a sealing part structure for a hydraulic cylinder with a good sealing effect. The sealing part structure structurally comprises a lubricating device, a spring buffering part, asecond sealing assembly and a clamping groove. According to the sealing part structure, the lubricating device is arranged at the rear end of an outer cylinder, a cylinder body is fixed to the outercylinder through a fixing part, an injection pipe at the left end of the cylinder body penetrates through an inner cylinder, then a proper amount of lubricating liquid is injected into the cylinder body through an injection plug, the lubricating liquid is filtered through a filter screen in a filter plate to a sponge pad for absorption, then a push handle is pressed horizontally, the push handle extrudes a spring rod under the force, the spring rod and a partition plate are compressed in a matched mode to make a pressing plate move to the left to extrude the sponge pad, the sponge pad is compressed under the force to extrude the internal lubricating oil, the lubricating oil flows into the inner cylinder through the injection pipe to lubricate a piston rod, finally lubrication is completed,the push handle is released to make the components reset sequentially and the beneficial effects that regular lubrication of the piston rod in the inner cylinder is achieved, the friction force generated by the sliding between the piston rod and the inner cylinder is eliminated, and the oil leakage of the hydraulic cylinder is avoided are achieved.

Description

technical field [0001] The invention relates to the technical field of hydraulic cylinders, in particular to a seal structure for a hydraulic cylinder with good sealing effect. Background technique [0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating or oscillating motion. It has a simple structure and reliable operation. Stable, so it is widely used in various mechanical hydraulic systems, and the gap between the piston rod and the hydraulic cylinder in the hydraulic cylinder often needs to be sealed with a seal to prevent oil leakage. [0003] When using the seal structure of the previous hydraulic cylinder, the outer cylinder and the inner cylinder are assembled together, and then the piston rod is passed through the inner cylinder, and the sealing components are respectively inserted into the ports on both sides of the inner cylinder to realize the sealing of the piston rod. The h...

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Problems solved by technology

[0003] When the previous hydraulic cylinder seal structure was used, the outer cylinder and the inner cylinder were assembled together, and then the piston rod was passed through the inner cylinder, and the sealing components were respectively inserted into the ports on both sides of the inner cylinder to realize the sealing of the piston rod. The hydraulic cylinder with good sealing effect has a seal structure, and the friction force is generated as the piston rod slides in the inner cylinder for a long time, which causes the inner cylinder to wear slowly, resulting in deviation between the sealing component and the inner cylinder port, and the oil in the hydraulic cylinder is easy to flow out , hindering the normal operation of the device

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