Adjustable cast-in-place concrete box girder steel internal mold device

The utility model discloses an adjustable cast-in-place concrete box girder steel internal mold device, and relates to the technical field of building construction equipment. Comprising a base, a first lower mold plate is fixedly connected to the outer wall of the top of the base, a rectangular groove is formed in the bottom of the inner wall of the base, a fixing plate is slidably connected to the inner wall of the rectangular groove, a second lower mold plate is fixedly connected to the outer wall of the top of the fixing plate, and a hydraulic rod is fixedly connected to the inner wall of the first lower mold plate. Push-pull buffering is carried out between the two lower die plates through the first spring, the fixing plate can be pushed to slide in the base when the hydraulic rod works, the effect of pushing and pulling the second lower die plate can be achieved, and therefore the distance between the lower die plates can be conveniently adjusted, and installation can be completed only by installing slid