Drilling platform drill floor locking device

The utility model provides a locking device for a drilling platform drill floor, which is characterized in that a drill floor base supporting leg is arranged on a guide rail in a sliding manner, a hinged support assembly is arranged on a toggle plate of the drill floor base supporting leg, the head end of a lead screw is rotatably connected with the hinged support assembly, the lead screw penetrates through a box body assembly, an opening is formed in the side wall of the box body assembly, and the hinged support assembly is arranged in the opening. The lead screw can extend out of the box body assembly from the opening, the nut A and the nut B are in threaded connection with the lead screw and are arranged in the box body assembly, a plug pin hole is formed in the bottom of the box body assembly, and the plug pin penetrates through the slideway pawl hole and the plug pin hole, so that the purpose that the box body assembly is locked on the guide rail is achieved. The device can effectively shorten the fixing