Mechanical disc brake device

The utility model provides a mechanical disc brake device which comprises a mounting seat, a brake mechanism is arranged below the mounting seat, and the brake mechanism comprises guide rails symmetrically and fixedly connected to the lower surface of the mounting seat and movable plates symmetrically and movably arranged between the guide rails. The brake pads are installed on the corresponding surfaces of the symmetrically-arranged movable plates, the sliding blocks are welded to the top ends of the side walls of the movable plates and connected with the guide rails, first connecting lugs are symmetrically welded to the surfaces of the sides, away from the brake pads, of the movable plates, and guide frames are symmetrically welded to the edge of the upper surface of the mounting base; adjusting plates are mounted on the inner sides of the guide frames, threaded rods are in threaded connection with the middles of the adjusting plates, and the bottom ends of the threaded rods are rotationally connected with