A positioning device for negative ring pipe sheet force relieving pier

By combining a sliding frame, support frame, lifting plate, sliding plate and limiting plate, and using cylinder and motor drive, the unloading pier is accurately positioned and stabilized, solving the problem of large positioning error in the traditional unloading pier positioning method, and improving construction efficiency and safety.

CN224351963UActive Publication Date: 2026-06-12CCCC TUNNEL ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CCCC TUNNEL ENG CO LTD
Filing Date
2025-08-21
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Traditional unloading pier positioning methods rely on manual measurement, which is inefficient and easily affected by human factors and complex construction site environments, resulting in large positioning errors that affect the stability of shield tunneling and construction safety.

⚗Method used

It adopts a combination structure of sliding frame, support frame, lifting plate, sliding plate and limit plate. The unloading block is accurately positioned by cylinder and motor drive. The cylinder and motor control the sliding and fixing of the unloading block, and the limit groove and connecting bolts achieve stable positioning.

🎯Benefits of technology

This improved the positioning accuracy and stability of the stress relief piers, reduced the positioning difficulty, ensured the support stability of the negative ring segments, and enhanced construction safety and efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to a positioning device for a stress-relieving pier in a negative ring tunnel segment, belonging to the field of tunnel boring machines. It includes a sliding frame with pulleys mounted on it. A support frame slides vertically relative to the sliding frame, and a lifting plate slides vertically relative to the sliding frame. A sliding plate slides horizontally relative to the lifting plate, and the sliding plate and lifting plate are in contact. Multiple limiting plates are provided on the sliding plate, with a space between adjacent limiting plates for the stress-relieving pier to be placed. In this application, the support frame supports the sliding frame, the lifting plate is in contact with the ground, and the sliding of the sliding plate can drive the sliding of the limiting plates, which can limit the stress-relieving pier, thereby fixing the stress-relieving pier.
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