Steel box girder hoisting-free construction pushing device

The utility model relates to the technical field of bridge erection, in particular to a steel box girder hoisting-free construction pushing device which comprises a front supporting plate and a plurality of rear supporting plates, the front supporting plate is connected with a front hydraulic device, a pushing plate is arranged on one side of the front supporting plate, the bottom of the pushing plate is fixedly connected with a supporting block, and the bottom of the supporting block is slidably connected with a guide rail. The end face of the pushing plate is fixedly connected with a transverse hydraulic device, the rear supporting plate is installed on a rear hydraulic device, the rear hydraulic device is connected with a temporary pier, a main pier is arranged on one side of the temporary pier, and the top of the main pier on one side of the rear supporting plate is connected with a pushing supporting plate. When the temporary pier is used, the connected beam body can be lifted and descended regularly, th