Short-stress-path rolling mill pull rod thread clearance eliminating device and application method

The invention provides a short-stress-path rolling mill pull rod thread clearance eliminating device and an application method. The short-stress-path rolling mill pull rod thread clearance eliminating device comprises an adjusting nut, a pressing nut, an end cover, a bearing block, a pull rod, a high-elastic body buffer pad, a spherical pad and plug pins, and a plurality of rectangular grooves which are evenly distributed are formed in the circumferential direction of the outer side of the pressing nut and the circumferential direction of the outer side of the adjusting nut. According to the short-stress-path rolling mill pull rod thread clearance eliminating device and the application method, the plug pins inserted into the rectangular grooves, the structure is simple are transversely arranged, so that relative rotation between the pressing nut and the adjusting nut can be avoided, the structure is simple, assembly and disassembly are convenient, and the adjusting process is simpler and more convenient; and