A universal proportional link mechanism for a compound free-form bellows expansion joint

The universal proportional linkage mechanism simplifies the structure of the compound bellows expansion joint, solves the problems of inconsistent bellows deformation and high cost, achieves coordinated bellows deformation and the bearing of the weight of the intermediate tube, and extends the service life of the expansion joint.

CN224380982UActive Publication Date: 2026-06-19CSSC SHUANGRUI (LUOYANG) SPECIAL EQUIP CO LTD XIAMEN BRANCH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CSSC SHUANGRUI (LUOYANG) SPECIAL EQUIP CO LTD XIAMEN BRANCH
Filing Date
2025-06-30
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The existing double-corrugated expansion joint suffers from problems such as inconsistent deformation of the two sets of corrugated pipes, complex structure, and high cost.

Method used

A universal proportional linkage mechanism is adopted, including a universal ring assembly, a proportional linkage assembly, a hinge seat assembly, and a saddle, which simplifies the linkage mechanism structure. Through the cooperation of the hinge seat assembly and the universal ring assembly, the bellows can be coordinated to deform and bear the weight of the intermediate tube.

Benefits of technology

The linkage mechanism structure has been simplified, costs have been reduced, ease of assembly and disassembly has been improved, the service life of the expansion joint has been extended, and coordinated deformation of the bellows and bearing of the weight of the intermediate tube have been achieved.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224380982U_ABST
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Abstract

The utility model provides a kind of universal proportional connecting rod mechanism for compound free type bellows expansion joint, the expansion joint includes end connection pipe, bellows and intermediate pipe;End connection pipe, bellows are set two, the both ends of intermediate pipe are connected with end connection pipe respectively through bellows, the mechanism includes universal ring assembly, proportional connecting rod assembly, hinge seat assembly and saddle;The both ends of proportional connecting rod assembly are connected with two end connection pipes sequentially through universal ring assembly, hinge seat assembly respectively;Proportional connecting rod assembly is connected with intermediate pipe through saddle to the side of expansion joint;By the universal proportional connecting rod mechanism for compound free type bellows expansion joint of the utility model, the number of parts can be reduced, the structure of connecting rod mechanism is simplified, the cost of connecting rod mechanism is reduced, the disassembly and assembly convenience of connecting rod structure is improved, the service life of expansion joint is effectively prolonged, and the coordinated deformation of the two groups of bellows of compound bellows expansion joint is realized, and the function of bearing the self-weight of intermediate pipe is also had.
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