Steel bar rust remover

The utility model relates to the technical field of building equipment, and discloses a steel bar derusting device which comprises an operation table, a first fixing plate is fixedly connected to the left side of the top of the operation table, a second fixing plate is fixedly connected to the right side of the top of the operation table, and polishing shells are rotationally connected between the first fixing plate and the second fixing plate. A plurality of springs are fixedly connected to the inner side of the polishing shell, polishing blocks are fixedly connected to the opposite sides of the multiple springs, a gear ring is fixedly connected to the right side of the outer wall of the polishing shell, a supporting plate is fixedly connected to the left side of the second fixing plate, and a first servo motor is fixedly connected to the left side of the supporting plate. According to the steel bar grinding device, the surface of a steel bar is ground through the first pulley rod, the first servo motor and