Bridge steel box girder hoisting structure

The utility model relates to the technical field of hoisting structures, in particular to a bridge steel box girder hoisting structure which comprises a base frame, a hoisting assembly is installed on the top of the base frame, a two-way thread moving mechanism is installed in the base frame, and one end of the two-way thread moving mechanism is in transmission connection with a driving mechanism. Connecting plates are fixed to the bottoms of the two moving ends of the bidirectional thread moving mechanism, vertical plates are fixed to the bottoms of the connecting plates, a supporting plate is fixed to one side of the bottom end of each vertical plate, an abutting assembly in sliding fit with the top of each supporting plate is installed on one side of each vertical plate, and each abutting assembly comprises an abutting plate; according to the steel box girder hoisting device, the two supporting plates can be driven to get close to each other until the abutting plates abut against the side ends of a steel b