Torque transmission device for torque transmission from the driving device to the rolling roll in the roll stand

摘要

The present invention relates to a torque transmission device for transmitting torque from the drive device 200 to the rolling roll in the roll stand. Known torque transmission devices of this type are rotationally connected with the drive device 200 via the drive side pivot bearing 120 and rotationally connected with the neck 300 of the rolling roll through the rolling roll side pivot bearing 130. Spindle 110. In the prior art, lubrication of pivot bearings is carried out by grease or by liquid lubricant, in which case the grease or liquid lubricant must be continuously supplied from the outside to the bearings by the pump device 140. In order for the torque transmission device to operate independently from the continuous external supply of lubricant, in accordance with the proposal of the present invention, the lubricant chambers in the two pivot bearings are in a fluid guided manner through the supply and return channels for the lubricant in the region of the spindle. The connection to each other forms a closed circuit for the lubricant, and the at least one pump device 140 is integrated in the circuit to maintain circulation of the lubricant in the circuit.