ROLL STANDS FOR ROLLING MILLS

摘要

A roll stand for rolling mills utilizes roll frames having frame caps held down by means of pre-stressed tie rods. In one construction four tie rods in all are used and receive at their upper ends a stationary top plate seating against pre-stressing units at the upper ends of the tie rods. The top plate bears against screw-threaded sleeves seating against column embers of the frame. A support frame for the frame caps seats against ring nuts rotatable in screw-threaded sleeves for screwdown adjustment, and hydraulic cylinder piston units are provided between the top plate and the frame cap support frame to maintain pressure between the ring nuts and the sleeves or to release said pressure during screwdown which is effected by rotating the ring nuts from a common drive.