A cast-in-place box girder formwork hanger

Abstract

The invention belongs to the technical field of formwork hangers, in particular to a cast-in-place box girder formwork hanger. Aiming at the problems of poor fixing stability and low operating efficiency, the following proposals are proposed, including a traction suspension and a traction suspension fixed on the traction suspension mechanism, the traction mechanism includes a traction fixture, a traction cable and a lifting ring, and the inner wall of the traction fixture is provided with a lifting hole, and the inner wall of the lifting hole is bolted by a traction cable, and the other end of the traction cable and the lifting ring are connected to each other. Bolted, eight to twelve electromagnetic seats are equidistantly and symmetrically distributed on the bottom outer wall of the traction fixture. The hanger of the present invention has a three-layer structure, and the overall frame is fixed by electromagnetic force, which is more stable in the process of lifting and lowering. Arm clamping, adjustable specifications, suitable for different box girder specifications, the three-layer structure has high coordination efficiency, convenient adjustment and better applicability during the hoisting process.

Description

technical field [0001] The invention relates to the technical field of formwork hangers, in particular to a cast-in-place box girder formwork hanger. Background technique [0002] The cast-in-place bridge is a kind of beam in bridge engineering. It is hollow inside and has flanges on both sides of the upper part, which is similar to a box, hence the name. Single box, multi-box, etc. The box girder of reinforced concrete structure is divided into prefabricated box girder and cast-in-place box girder. The prefabricated box girder combined with the bridge erecting machine can be erected after the completion of the substructure, which can speed up the progress of the project and save the construction period; the cast-in-place box girder is mostly used for large continuous bridges. [0003] The spreader is a device for lifting heavy objects in a hoisting machine. The most commonly used spreader for lifting finished items is the hook, and there are other lifting rings, lifting ...

AI Technical Summary

Problems solved by technology

[0004] The formwork hangers of the existing cast-in-place box girders are all transferred and fixed by the gantry frame. The fixed hangers on the gantry frame are all pressure-type, and the ends of some box girders will be fixed unstable, resulting in Partial detachment affects the stability of the overall transfer, and the overall loading and unloading is more complicated and the operating efficiency is lower

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