Precise positioning device for side web of large-section steel box girder

The large-section steel box girder side web accurate in-position device comprises H-shaped steel, an installation base, a guide sliding rod and movable supporting pieces, the H-shaped steel is welded to a jig frame, the installation base is detachably installed on the H-shaped steel, a limiting column is arranged on the installation base, the guide sliding rod is clamped on the limiting column in a limiting mode, and the movable supporting pieces are arranged at the two ends of the guide sliding rod. And the movable supporting piece is adjustably connected with the guide sliding rod. The device is ingenious and reasonable in structural design and high in practicability, the guide sliding rod is supported and limited on the back face of the steel box girder side web, and then the movable supporting pieces at the two ends are matched with the guide sliding rod to further abut against and limit the two side ends of the steel box girder side web. The positioning accuracy and stability of the steel box girder side