TENSIONING APPARATUS Russian patent published in 2007 - IPC B21B39/08 

FIELD: tensioning apparatuses of rolling stands.

SUBSTANCE: tensioning apparatus includes several rollers mounted under plane of belt movement without possibility of displacing and several rollers mounted over plane of belt movement with possibility of motion by means of drive unit from initial position towards belt and from belt to initial position. Roller being nearest to deformation zone of rolling stand is mounted with possibility of motion by means of additional drive from initial position over and(or) under plane of belt movement towards belt or back from belt to any initial position. When tensioning apparatus is used for coloring belt roller circumference shifts belt upwards or downwards relative to horizontal passing line and it forms inlet angle over or under said passing line. Additional drive is in the form of cylinder operating to both sides and driven by means of compressed working fluid. Piston rod of additional cylinder acts upon bent carrying carcass mounted with possibility of motion in vertical guide and designed for moving roller nearest to deformation zone of rolling stand.

EFFECT: possibility for keeping constant distance between deformation zone and uncoiling device at coloring process.