Tool for precisely cutting bolted U-rib hand hole

Abstract

The invention relates to a tool for precisely cutting a bolted U-rib hand hole. The tool comprises a profiling sample plate and supporting plates. The profiling sample plate is horizontally arranged and is parallel to the U-rib of a steel box girder plate unit up and down. A profiling through hole matched with the U-rib hand hole of the U-rib of the steel box girder plate unit in size is formed in the middle area of the profiling sample plate in a matched and penetrating mode, and the inner contour of the profiling through hole and the U-rib hand hole are located on the same cutting face. The supporting plates are symmetrically fixed to the two opposite sides of the bottom of the profiling sample plate in a matched mode. The surfaces, facing the U-rib of the steel box girder plate unit, of the supporting plates are completely and tightly attached to the outer wall of the U-rib of the steel box girder plate unit in a matched mode, and the surfaces, back on to the U-rib of the steel box girder plate unit, of the supporting plates are provided with positioning datum lines in a matched mode. The tool is simple and reasonable in structural design and convenient to operate and use, accurate cutting of the position and size of the U-rib hand hole of the U-rib of the steel box beam plate unit can be achieved, and the problem that the cutting size and perpendicularity are out of tolerance due to existing manual lofting cutting methods and the like can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of steel bridge processing and manufacturing, and in particular relates to a tool for precision cutting of bolted U-rib hand holes. Background technique [0002] With the rapid development of steel structure bridges in my country, long-span steel box girder bridges are gradually increasing, and the quality of orthotropic steel bridge decks has become the focus of steel box girder disease control. U-rib is an important part of orthotropic plate, the processing method and quality control are particularly critical. At present, the arc hand hole at the end of the U rib is commonly used for manual lofting and scribing cutting and CNC equipment cutting; among them, the manual lofting and scribing cutting is done by the workers on site, and then use the flame cutting torch to cut according to the line. If there is deviation in the scribing line or The vibration during cutting, cutting size and verticality will not...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problems existing in the above-mentioned background technology, the present invention proposes a structure design that is simple and reasonable, easy to operate and use, and can realize the precise cutting of the position and size of the U-rib hand hole where the steel box girder plate unit is bolted to the U-rib, and can Tooling for precision cutting of bolted U-rib hand holes that effectively solves the problem of cutting size and verticality out-of-tolerance problems caused by existing methods such as manual lofting and cutting

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