DRIVE OF ROTATION Russian patent published in 2012 - IPC B21C47/04 

FIELD: process engineering.

SUBSTANCE: invention aims at simplifying device maintenance. Device to drive, at least, one mandrel 4a, 4b coupled with secondary reduction gear 10 coupled with primary reduction gear 8 transmitting rotation to said mandrel comprises, at least, one primary reduction gear to be driven by, at least, one drive motor 7a, 7b coupled with primary reduction gear via one rotation drive means 9 driven by primary reduction gear on rotational axle Ax to transmit rotation, means to transmit rotation including and least one coupling tube with two cut faces.

EFFECT: simplified design.

17 cl, 7 dwg