Padstone support preformed hole positioning device

By combining the use of multiple templates and limit beam structures, the problem that the existing device cannot adjust the longitudinal limit beam is solved, flexible adaptation to different reserved hole molds is achieved, and the efficiency and flexibility of bridge construction are improved.

CN223329687UActive Publication Date: 2025-09-12CHINA RAILWAY 11TH BUREAU GRP CORP LTD +1
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Patent Information

Application Number
CN202422648528.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2025-09-12
Estimated Expiration
2034-10-31

AI Technical Summary

Technical Problem

In existing bridge construction, the positioning device for the reserved holes of the bolster support cannot adjust the position of the longitudinal limit beam and cannot adapt to reserved hole molds of different sizes and positions, resulting in low construction efficiency.

Method used

A combined structure is adopted, which includes a first longitudinal bridge formwork, a second longitudinal bridge formwork, a first transverse bridge formwork, a second transverse bridge formwork, an L-shaped chamfered connector, a first concave transverse limiting beam, a second concave transverse limiting beam, an M-shaped transverse limiting beam, a columnar longitudinal stabilizing beam and an L-shaped longitudinal limiting beam. Flexible adjustment of multiple groups of limiting beams is achieved through sliding channels and positioning bolts, and square and circular support reserved hole molds are used to meet the needs of different reserved holes.

Benefits of technology

It realizes targeted adjustment according to the reserved hole molds of different positions and sizes, improves construction efficiency and flexibility, is suitable for various reserved hole molds and layout methods, and improves construction flexibility.

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Abstract

The padstone support preformed hole positioning device comprises a first along-bridge direction formwork and a second along-bridge direction formwork which are arranged in parallel. The first transverse bridge direction formwork and the second transverse bridge direction formwork are arranged in parallel; an L-shaped chamfer connecting piece; the first concave transverse limiting beam and the second concave transverse limiting beam are each provided with a first sliding groove channel. The M-shaped transverse limiting beam is provided with a second sliding channel; the columnar longitudinal stabilizing beam is connected among the first concave transverse limiting beam, the second concave transverse limiting beam and the M-shaped transverse limiting beam; and the L-shaped longitudinal limiting beam is connected between the first concave transverse limiting beam and the M-shaped transverse limiting beam and between the second concave transverse limiting beam and the M-shaped transverse limiting beam, and can move and be positioned along the first sliding channel and the second sliding channel. And the positions of the L-shaped longitudinal limiting beams can be flexibly adjusted to adapt to preformed hole molds of different sizes, shapes and positions, and the construction efficiency is improved.
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