A self-locking arch frame hinge device

By designing a self-locking arch frame hinge device, the problem of arch frame loosening during transportation is solved by using limiting hooks and eccentric clamping structures, achieving stable transportation of the arch frame and simplifying installation, thereby improving construction safety and efficiency.

CN224315005UActive Publication Date: 2026-06-02JIANG XI XIN TONG JI XIE ZHI ZAO YOU XIAN GONG SI CHANG SHA FEN GONG SI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANG XI XIN TONG JI XIE ZHI ZAO YOU XIAN GONG SI CHANG SHA FEN GONG SI
Filing Date
2025-07-17
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In tunnel construction, the hinged joint of the folding steel arch frame is prone to loosening during transportation, which leads to installation difficulties and safety hazards.

Method used

A self-locking arch frame hinge device is designed, which uses symmetrical left and right hinge plates connected by guide clamping bolts, and sets limiting hooks and eccentric pressing structures on the inner side. The eccentric pressing structure and the limiting hooks cooperate to clamp and fix the arch frame in the height direction. The toothed structure of the eccentric wheel increases the friction force to prevent loosening.

Benefits of technology

It improves the anti-loosening capability of the arch frame hinge device, ensures the stability of the arch frame during transportation and installation, simplifies the construction process, and reduces safety hazards.

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Abstract

This utility model discloses a self-locking arch frame hinge device. The self-locking arch frame hinge device includes: a hinge plate assembly and guide clamping bolts; the hinge plate assembly includes a symmetrically arranged left hinge plate and a right hinge plate, which are connected together by the guide clamping bolts to clamp and fix the arch frame in a first direction; wherein, the inner sides of both the left and right hinge plates are provided with limiting hooks, and an eccentric pressing structure is also provided between the left and right hinge plates. When the arch frame slides, the eccentric pressing structure rotates to press the arch frame tightly onto the limiting hooks. This solves the technical problem of loosening between the folding arch frame hinge device and the arch frame during the transportation of the arch frame.
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