Pull-rod-free highway prefabricated hydraulic box girder formwork

By using a support rod without tie rods and hydraulic cylinder support, the precast box girder formwork can be efficiently assembled and disassembled, solving the problems of high manpower and material consumption and many safety hazards in the existing technology, improving production efficiency and appearance quality, and reducing costs.

CN115122470BActive Publication Date: 2026-05-26HUNAN PROVINCE YUANDONGCIDIANGAOKE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN PROVINCE YUANDONGCIDIANGAOKE CO LTD
Filing Date
2022-05-05
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing methods for reinforcing precast box girder formwork require significant manpower and resources, pose safety hazards during dismantling, and have low dismantling efficiency, impacting production efficiency and appearance quality. They are also costly and inconvenient to transport.

Method used

It adopts a tie rod-less design, using support rods and hydraulic cylinders for support. The hydraulic cylinders enable overall demolding and mold assembly, reducing the use of tie rods. Combined with a slider and pin structure, it enables the overall operation of the template.

Benefits of technology

It improved production efficiency, reduced labor costs and safety risks, ensured the appearance quality of precast beams, reduced the use of vehicles, and saved raw materials and transportation costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN115122470B_ABST
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Abstract

This invention discloses a tie-rod-free precast hydraulic box girder formwork for highways, comprising two sets of external frames and a base. Each set of external frames includes multiple parallel frames, with the two sets of external frames facing each other. The base is positioned between the two sets of external frames. Side lining plates are respectively provided on the opposite sides of the two sets of external frames, and a bottom lining plate is provided on the top of the base. The side lining plates and the bottom lining plate form an isosceles trapezoidal cavity with a larger cross-section at the top and a smaller cross-section at the bottom. The side lining plates are fixed on multiple sliders, which are mounted on sliding blocks perpendicular to the cavity. Each slider is connected to its corresponding sliding block via a hydraulic cylinder, with one end of the hydraulic cylinder hinged to the slider and the other end hinged to the sliding block. This invention has a simple structure, is easy to operate, reduces production costs, improves production efficiency, provides good safety, and ensures the overall appearance quality of the precast beam.
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