The utility model discloses an internal mold supporting device for prefabricating a
box girder, which comprises a mounting plate, a quick
assembly is arranged at the top of the mounting plate, the quick
assembly comprises a
threaded rod and a first moving plate, the
threaded rod is connected to the top of the mounting plate through a bearing, and the first moving plate is connected to the side wall of the
threaded rod through threads. First U-shaped frames are fixedly installed on the two sides of the first movable plate respectively, and connecting rods are hinged to the inner side walls of the first U-shaped frames. According to the internal mold supporting device for prefabricating the
box girder, the whole internal mold supporting device can be rapidly fixed in an internal mold through the arranged rapid
assembly assembly, fixing is easy and convenient, fixing work can be easily completed by one worker, unnecessary
workload is effectively reduced, the working efficiency of the worker is guaranteed, work can be completed within the shortest time, and the working efficiency of the worker is improved. And the working process is not affected, the using effect is improved accordingly, and application and popularization are facilitated.