WORKING STAND OF HELICAL ROLLING MILL Russian patent published in 2009 - IPC B21B31/24 B21B31/32 

FIELD: technological processes.

SUBSTANCE: invention is related to the field of rolling production, namely to equipment of helical rolling mills, and is related to working stands of rolling mills. Working stand of helical rolling mill comprises bed plate, in bores of which three working rollers are installed with pitch of 120°, which are fixed in rotary drums with the help of bearing supports. Turn of rollers by feed angle is realised by three drum turning and stopping mechanisms. Installation of working rollers onto necessary size of caliber is realised by mechanisms of drums displacement, every of which has fixed nut, pressing screw with slit section, electromechanical drive gear and hydraulic cylinder. Pressing screw is arranged as hollow, and balancing rod is passing through it, which presses drum via spherical abutment to pressing screw. Hydraulic cylinder is arranged as double-action, its body is fixed in bed plate, and nut of drum displacement mechanism is fixed in hollow piston of hydraulic cylinder.

EFFECT: increased reliability and durability, and also facilitated repairability due to simplification of its design.

3 dwg