Torque transfer device for torque transmission from a drive unit to a rolling roll in a roll stand

摘要

The present invention relates to a torque transmitting device for transmitting torque from a drive device (200) to a rolling roll in a roll stand. Known torque transmission devices of this type are rotatably connected to the drive system 200 via a drive side pivot bearing 120 and rotatably connected to a neck 300 of a rolling roll via a rolling roll side pivot bearing 130 And a spindle 110. In the prior art, the lubrication of the pivot bearings is performed by grease or by a liquid lubricant, in which case the grease or liquid lubricant must be supplied continuously from the outside to the bearings by the pump device 140. [ In accordance with the proposal of the present invention, the lubricant chambers in the two pivot bearings are arranged in a fluid guiding manner through a supply channel for the lubricant and a return channel for the lubricant in the region of the spindle, so that the torque transmitting device operates independently from the continuous external supply of lubricant By being connected to each other, a closed circuit for lubricant is formed, and at least one pump device 140 is integrated in the circuit to maintain the circulation of the lubricant in the circuit.