Longitudinal connecting device for steel arches
By mechanically connecting the plug-in connecting bars to the steel arch frame, the problem of poor connection quality of tunnel steel arch frames is solved, achieving a fast and stable connection effect and reducing safety hazards.
CN224149594UActive Publication Date: 2026-04-21CHINA RAILWAY 11TH BUREAU GRP CORP LTD +1
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Patent Information
- Application Number
- CN202521111327.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-21
- Estimated Expiration
- 2035-05-30
AI Technical Summary
Technical Problem
The existing tunnel steel arch frame has poor connection quality and weak welding, which affects the overall stability and poses safety hazards.
Method used
The steel arch frame is connected by plug-in connecting rods, and mechanical connection is achieved through fixing components and connectors to avoid welding. Threaded connections and limit nuts are used to ensure connection quality.
Benefits of technology
It improved the connection speed and accuracy, enhanced the fixing effect, reduced the safety hazards of hot work in the tunnel, and improved the connection quality and overall stability.
✦ Generated by Eureka AI based on patent content.
Abstract
A longitudinal connecting device for steel arches comprises a plurality of connecting ribs, the connecting ribs and the steel arches are arranged in a one-to-one correspondence mode, the connecting ribs are connected to webs of the steel arches in an inserted mode through fixing assemblies, and every two adjacent connecting ribs are connected through a connecting piece. According to the design, the connecting ribs are connected with the steel arches in an inserting mode, compared with welding, the connecting speed is high, the two connecting ribs are in butt joint through the connecting pieces, and the butt joint precision is high; meanwhile, the connecting ribs are connected with the steel arch frame through the fixing assemblies, the fixing effect is good, traditional welding connection is replaced with mechanical connection, fire operation in a tunnel is avoided, and particularly potential safety hazards in the tunnel with gas are greatly reduced; the connection mode of the I-shaped steel of the steel arch and the connecting ribs is directly converted from passive contact connection of the I-shaped steel and the connecting ribs into the mode that the two materials form a whole through structure interpenetration, external force is borne through the material strength, and the connection quality is greatly improved.
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