Line patrol robot

The invention discloses a line patrol robot in the field of line patrol machines. The line patrol robot comprises a box body, the top of the box body is fixedly connected with a frame, the bottom of an inner cavity of the box body is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating disc, and the surface of the rotating disc is movably connected with a movable rod. After a cable is limited through a limiting wheel and a positioning wheel, a PLC starts a rotating disc to work, the rotating disc drives a movable rod to work, the movable rod drives a movable block to work, the movable block pushes a limiting groove to drive a limiting plate to work, and the limiting plate drives a fixed plate to move; the positioning wheel is driven by the fixing plate to work, after the positioning wheel makes contact with the surface of a cable, the cable is detected through cooperation of the flaw detector body and the detection working head, and the problems that the cable inspe