Deformation joint template

By designing expansion joint templates and utilizing the automatic adjustment function of square tube frames and panel components, the problem of easy deformation of polystyrene foam boards during construction was solved, achieving efficient and stable concrete molding and improving construction quality and efficiency.

CN118167021BActive Publication Date: 2026-07-03CHINA RAILWAY URBAN CONSTR GRP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA RAILWAY URBAN CONSTR GRP
Filing Date
2024-03-29
Publication Date
2026-07-03

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Abstract

This invention discloses a formwork for expansion joints, relating to the field of expansion joint installation technology. It includes multiple rotating components between two square tube frames (one and two). Each rotating component includes a shaft, with connecting rods one and two on its outer wall, and connecting rods three and four further on its outer wall. Above connecting rods three and four are lifting components that increase or decrease the distance between square tube frames one and two. Multiple main hooks are located above square tube frames one and two, with a slider on one side of each main hook. A secondary hook is located above the slider. The interior of square tube frames one and two has grooves for the sliders to slide through. A bent wedge is located above the panel. This expansion joint formwork can be used repeatedly during installation, exhibits good stability in both support and disassembly, ensures the density and flatness of the poured concrete, eliminates the need for manual adjustment, and is convenient and quick to use, significantly improving construction efficiency.
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