SPACING UNIT OF ROLLING STAND Russian patent published in 1998 - IPC

FIELD: rolled stock production, namely horizontal or vertical spacing of working stands or other actuating mechanisms of rolling mills. SUBSTANCE: spacing unit of rolling stand includes high-pressure hydraulic chamber. Said chamber has elastic toroidal envelope with cylindrical output branch pipes fluid-tightly closed by means of supporting plate used for securing spacing unit to part of rolling stand and by means of movable plate creating spacing effort. Inner surfaces of said plates are provided with different-diameter annular ribs. Large-diameter rib is made on movable plate and small diameter rib - on supporting plate. Centering ring between said ribs is mounted by interference fit onto outer surface of annular rib of said supporting plate. Said centering ring has spherical outer surface and it engages with inner cylindrical surface of annular rib of said movable plate. Said movable plate has dead openings in central portion of its inner surface. Sets of disc springs placed in cylindrical seats of said supporting ring are mounted in said dead openings. Said supporting ring is rigidly secured to inner surface of said movable plate. Said sets of disc springs are preliminarily forced by means of threaded braces passing through inner openings of springs and through bottom openings of seats of supporting ring and secured to said supporting plate. EFFECT: enhanced efficiency of rolling mill, high quality of rolled strips and reliability of rolling stand structure. 5 dwg