Sealing structure for hydraulic oil cylinder

Through the combined design of sealing structure and dustproof structure, the problem of poor sealing of hydraulic cylinder is solved, better sealing effect and dustproof function are achieved, and the reliability of the hydraulic cylinder is enhanced.

CN223344361UActive Publication Date: 2025-09-16NANYANG TIANCHENG PETROLEUM MACHINERY CO LTD
1 Cites 0 Cited by

Patent Information

Application Number
CN202422848682.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-21
Publication Date
2025-09-16
Estimated Expiration
2034-11-21

AI Technical Summary

Technical Problem

The existing hydraulic cylinder sealing structure is prone to oil leakage during use and has a poor sealing effect.

Method used

It adopts a combination design of sealing structure and dustproof structure, including components such as sealing ring, extrusion groove, sealing groove, dust cover, extrusion block, fixing sleeve, dustproof sealing sleeve and V-groove. The initial sealing is achieved through the cooperation of sealing ring and sealing groove, and the secondary sealing and dustproof effect are achieved through the cooperation of extrusion groove and dustproof structure.

Benefits of technology

The sealing effect of the hydraulic cylinder is improved to prevent oil leakage, and the hydraulic oil in the sealing groove is squeezed when the piston moves to enhance the sealing performance, while preventing dust from entering, thereby improving the sealing reliability and dustproof effect.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model discloses a sealing structure for a hydraulic oil cylinder. The sealing structure comprises the hydraulic oil cylinder and a moving rod, a moving rod is installed in the hydraulic oil cylinder, a piston is installed at the bottom end of the moving rod, and a sealing assembly is arranged at the joint of the hydraulic oil cylinder and the moving rod and comprises a sealing structure and a dustproof structure. By arranging the sealing structure, when the hydraulic oil cylinder is used, the connecting position of the hydraulic oil cylinder and the moving rod can be sealed through the matched use of the sealing ring and the sealing groove, and when the piston moves in the hydraulic oil cylinder, the piston can be extruded through the extrusion groove. In addition, a part of the hydraulic oil can be extruded into the extrusion groove, one side of the extrusion groove is forced to extrude the outer side of the moving rod to conduct secondary sealing, the sealing effect is better when the device is used, the oil leakage situation is not prone to occurring, and therefore the sealing effect is improved.
Need to check novelty before this filing date? Find Prior Art