Deflectometer for bridge detection

The utility model belongs to the technical field of deflectometers. The utility model relates to a deflectometer, in particular to a deflectometer for bridge detection. Bearing shaft comprising a cylinder, bearing shaft supports are fixedly welded to the four corners of the bottom of the main column body bearing shaft correspondingly. Bracket bearing feet are fixedly welded at the bottoms of the bearing shaft brackets; a threaded loading column is vertically connected to the center of the column body bearing shaft through a thread in a penetrating manner; cylinder push rods are horizontally and fixedly connected to the left end and the right end of the top of the threaded loading column, a transition rotating shaft is movably connected to the center of the top of the threaded loading column, a mounting supporting frame is movably connected to the top of the transition rotating shaft, and clamping ring fixing frames are vertically and fixedly connected to the tops of the left end and the right end of the mount