Laser positioning device for drop point of drop hammer deflectometer

The utility model relates to the technical field of roadbed pavement detection, in particular to a drop hammer type deflectometer drop point laser positioning device which comprises a bottom plate, asupporting column is fixedly connected to the top of the bottom plate, a connecting plate is fixedly connected to the top of the supporting column, and a supporting frame is fixedly connected to one side of the connecting plate. A rotating column is movably connected to one side of the supporting frame, a supporting block is movably connected to the outer surface of the supporting column, and a supporting plate is fixedly connected to one side of the supporting block. According to the laser positioning device for the drop point of the drop hammer type deflectometer, the reflecting plate is arranged, the reflecting plate is movably connected with the bottom plate through the threaded rod, the laser lamp is turned on, light irradiates the reflecting plate to be reflected, the rotating columnrotates through the rotat