Roller frame structure with one or more pressing devices for maintaining constant the gap between the rollers

Claim 1

In a strip rolling apparatus having at least one pressurizing device for maintaining constant roller gap; a preloadable frame, a pair of rollers in the frame adapted for having strips pass therebetween, means supporting said rollers in said frame and including bearing members, at least one of said bearing members being movable in the frame toward and away from the other bearing member thereby to vary the gap between said rollers, means urging said one bearing member toward said other bearing member with a predetermined force, and a plurality of hydraulically operable means acting between said bearing members for exerting control forces on the bearing members tending to keep the gap between the rollers constant, each of said hydraulically operable means comprising cylinder-piston means, each piston and its cylinder having cooperating abutment means thereon to limit the movement of the piston in the cylinder in one direction limiting movement of the bearing members toward each other and adjustable in the direction of separation of the rollers, each piston acting on one of the bearing members and its cylinder being supported by the other of the bearings members and with the axes of said pistons and cylinders parallel to the direction of relative movement of said bearing members, means for supplying hydraulic fluid under pressure to said cylinders, and adjustable means interposed between each of said hydraulically operable means and one of the bearing members pertaining thereto and adjustable for adjusting the gap between said rollers when said abutment means are engaged.