Four-roller cold-rolling mill main drive arc-shaped tooth lubrication structure

The utility model discloses a four-roller cold-rolling mill main drive arc-shaped tooth lubrication structure, which comprises a continuously variable crown (CVC) shifting toothed sleeves and oil supply devices of which one ends are sheathed with the CVC shifting toothed sleeves, wherein the CVC shifting toothed sleeves are provided with oil inlet pipelines led to inner chambers of the CVC shifting toothed sleeves; one ends of the oil inlet pipelines are provided with oil inlets which are the same as the outside; one ends of the oil supply devices are sheathed with the oil inlets through rotary oil seals; the other ends of the oil supply devices are fixed on a drive shaft of a cold-rolling mill; and the oil supply devices are provided with oil supply holes. In the utility model, oil lines for lubricating arc-shaped teeth and pipelines for lubricating the CVC shifting toothed sleeves through the drive shaft are cut off, and then the oil lines are additionally connected with a main drive gear box of the rolling