Anti-collision device of mobile X-ray photography system

The utility model discloses an anti-collision device of a mobile X-ray photography system, which comprises a device main body, one end of the inside of the device main body is fixedly connected with an installation fixing plate, two ends of one side of the installation fixing plate are respectively provided with a sliding groove, the inside of each sliding groove is in sliding fit with a sliding block, one end of each sliding block is fixedly connected with a rotating shaft, and the other end of each sliding block is fixedly connected with a rotating shaft. One side of the rotating shaft is rotationally connected with a supporting rod, and one end of the supporting rod is rotationally connected with an abutting plate. By means of the structure, after the abutting plate abuts against an object, the two ends of the supporting rod are rotationally supported, the supporting rod can be rotationally matched with the rotating shaft, the sliding block slides in the sliding groove, the supporting rod is expanded and s