FIELD: engines and pumps, machine building.
SUBSTANCE: invention relates to drive shaft for transmitting motion from electric motor or reduction gear to roll mill, particularly to pipe rolling. Device to transfer motion to roll (1) of rolling mill stand comprises telescopic shaft (5) of drive with two telescopic elements, sliding in each other in preset limits, locking mechanism with latch for fixation of two telescopic elements at reaching preset working length, elastic device, a preliminary load directed in axial direction along two telescopic elements and acting at end of sliding stroke support drive shaft with device increasing and decreasing length of drive shaft and detachment mechanism configured to remote control, to switch locking mechanism with latch in unlocked position.
EFFECT: reduced number of operations at extraction of rolls of mill, simpler and faster maintenance.
10 cl, 13 dwg
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