Flexible closed transmission structure for eliminating backlash of gear

The utility model provides a flexible closed transmission structure for gear clearance elimination, and relates to the technical field of gear clearance elimination. The flexible closed transmission structure comprises an anti-backlash gear, a positioning pin with a via hole and a step is fixedly connected to the interior of the anti-backlash gear, a hexagon socket cap screw is connected to the interior of the positioning pin with the via hole and the step in a threaded mode, and a round nut is connected to the outer side of the hexagon socket cap screw in a threaded mode. According to the flexible closed transmission structure for eliminating the backlash of the gear, the backlash eliminating gear is always meshed with the other surface of the tooth surface of the gear shaft in a gapless manner due to the stress of the belleville spring, so that the gapless meshing of the gear shaft and the gear can be realized, and the backlash of a gear system can be effectively eliminated through one-time assembly and adj