FOUR-HIGH ROLLING STAND Russian patent published in 2005 - IPC

FIELD: rolling processes and equipment, namely four-high rolling stands of continuous sheet rolling mills.

SUBSTANCE: four-high rolling stand includes housings, rolling and backup rolls with chocks. Protrusions are provided in chocks of upper rolling roll; said protrusions are placed with gaps in grooves of chocks of lower rolling roll. At side of changing roll, chocks of rolling rolls have shoulders arranged with gaps between struts of housing and latches. Hydraulic cylinders for balancing upper rolls are mounted in chocks of lower rolling roll. On end portions of end vertical surfaces of protrusions, in chocks of upper roll and in upper portions of reciprocal surfaces of grooves of chocks of lower roll normal relative to roll axes and similarly inclined relative to horizon there are tapers. Edges of tapers in grooves formed at crossing tapers with upper horizontal surface of chocks of lower rolling roll are spaced by distance δ_c from vertical surfaces of grooves determined according to relation δ_c = δ_g - δ_p /2 where δ_g - gaps between shoulders of chocks and latches or struts of housing; δ_p - gaps between protrusions of chocks of upper rolling roll and grooves of chocks of lower rolling roll.

EFFECT: enhanced efficiency of rolling mill, lowered labor consumption and reduced time period of roll changing procedure, increased useful life period of rolls and their bearing assemblies.

2 dwg