A small curve radius tunnel shield construction deviation rectifying device

CN224550115UActive Publication Date: 2026-07-24CHINA RAILWAY 16TH BUREAU GRP ROAD & BRIDGE ENG CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY 16TH BUREAU GRP ROAD & BRIDGE ENG CO LTD
Filing Date
2025-10-09
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing tunnels may tilt during use due to abrupt changes in strata or soft tops and hard bottoms, requiring an effective correction device to adjust the tunnel's posture.

Method used

A deviation correction device for tunnel shield construction with small curve radius was designed, including components such as drill bit sleeve, first telescopic rod, sliding block, flipping rod, damping rod and linkage rod. The drill face adjustment and buffering operation are realized through the cooperation of the components, thereby improving the stability of the adjustment.

Benefits of technology

It achieves flexibility and stability in tunnel drilling face adjustment, enabling drilling operations to be carried out at preset positions underground, reducing tunnel tilt and improving construction accuracy.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of deviation rectifying device of small curve radius tunnel shield construction, including drill bit cover, first telescopic link and mounting cover, the front end of drill bit cover is provided with drill face, the inside of drill bit cover is movably installed with first telescopic link by connecting seat, the inside of drill bit cover is fixedly installed with second telescopic link, one end of second telescopic link is fixedly installed with sliding block, and sliding block and first telescopic link are movably connected by turnover lever.The application is cooperated between first telescopic link, sliding block, turnover lever, second telescopic link and mounting seat, and the telescopic effect of second telescopic link can make sliding block slide in the inside of drill bit cover, and turnover lever can be turned during the movement of sliding block, so that first telescopic link can be rotated around connecting seat, and drill face can be conveniently adjusted, and the position of ground bottom is drilled.
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