Track gap detection device

The utility model discloses a track gap detection device. Including a track, a guide wheel is arranged on the outer wall of the top of the rail; a rotating shaft is inserted into the inner wall of theguide wheel; bearings are welded to the outer walls of the two ends of the rotating shaft; a supporting frame is welded to the outer wall of one side of each bearing; a bearing plate is welded to thetop of the supporting frame, a fixing clamping base is welded to the outer wall of the top of the bearing plate, a connecting pipe is rotatably connected to the fixing clamping base through a pin shaft, a connecting rod is connected to the inner wall of the connecting pipe in a sleeving mode, a fixing hanging frame is welded to the outer wall of one side of the bearing plate, and an optometry plate is fixed to the fixing hanging frame. Rolling friction is adopted in the sliding mode of the searchlight, the guide wheels slide on the top of the track to drive the searchlight to conduct detection, the friction force betw