A kind of steel box girder three-dimensional bridge deck crane and steel box girder hoisting method

Abstract

The invention discloses a steel box girder three-dimensional bridge deck crane and a steel box girder hoisting method. The crane comprises a forward-moving base, a crane frame and a hoist, and a steel box is installed on the top of the cantilevered end of the crane frame. A beam two-dimensional adjustment mechanism and a balance pulley assembly, an upper pulley assembly is installed on the steel box girder two-dimensional adjustment mechanism, and the wire rope is connected to the lower pulley assembly through the upper pulley assembly and the balance pulley assembly; the steel box girder hoisting method includes the steps: 1. 1. Lower the spreader to connect the steel box girder; 2. Lift the steel box girder and adjust the position of the steel box girder in three dimensions; 3. Adjust the slope of the steel box girder; 4. Assemble the steel box girder; 5. Move the base forward to the updated steel Box girder assembly end; 6. Repeat steps 1 to 5 multiple times until the end of the steel box girder assembly. The invention adopts the walking type, the bridge deck crane is small in size, and the hoisting weight can be adjusted by changing the size and number of steel wire ropes, so as to solve the problems of difficult suspension control and beam installation accuracy control under complex linear conditions.

Description

technical field [0001] The invention belongs to the technical field of steel box girder hoisting, and in particular relates to a steel box girder three-dimensional bridge deck crane and a steel box girder hoisting method. Background technique [0002] At present, most of the domestic bridge construction projects use bridge deck cranes to suspend the beams. Due to the differences in the structural types and construction conditions of the beams, the structural types and functional characteristics of the bridge deck cranes are also quite different. The bridge deck crane adopts a box-type main beam, the front end of the main beam tower cantilevered, the main beam, the tower and the cable form a triangular structure with strong bearing capacity, so as to change the force structure and control the lower winding of the cantilever, and the ground support It is fixed by the front fulcrum and the rear anchor point, and the longitudinal moving crane on the main beam completes the lifti...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a steel box girder three-dimensional bridge deck crane for the deficiencies in the above-mentioned prior art. , the hoisting weight can be adjusted by changing the size and number of steel wire ropes, which solves the problem of single lifting of the bridge deck crane, solves the problem of suspension control under complex linear conditions and the difficulty of controlling the installation accuracy of beam sections. There is a broad market in the field of bridges, which is easy to promote and use

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