The utility model discloses a vertical roll adjusting and clearance eliminating mechanism. A vertical roller is mounted in the sliding chute of the vertical roller yoke; a screw rod is hinged to the top end of the vertical roller, a main nut is arranged in the main through hole, an inner ring of the main nut is a threaded hole and is matched with an external thread of the screw rod, and an outer ring of the main nut is a worm wheel; an auxiliary through hole is coaxially formed in one side, far away from the main through hole, of the vertical roller yoke, and the
diameter of the auxiliary through hole is smaller than that of the main through hole; a threaded sleeve in threaded connection with the lead screw is arranged in the auxiliary through hole. The outer wall of the threaded sleeve and the auxiliary through hole are arranged at intervals. A pin is arranged on the end face of the end, adjacent to the main nut, of the threaded sleeve, a pin hole is formed in the end face corresponding to the main nut, and the threaded sleeve and the main nut are positioned through the pin. The other end of the threaded sleeve extends out of the screw hole; a threaded section is arranged on the outer side wall of the end, located outside the through hole, of the threaded sleeve, and an adjusting nut is arranged on the threaded section. And a disc spring group is sleeved outside the thread
bushing between the adjusting nut and the vertical roller yoke.