Swivel disk friction gearing

摘要

A swivel disk friction gear system has a driving part and a driven part, each having a concave outer surface. An axially adjustable set ring is arranged between these parts. The gear system also has swivel disks with convex outer surfaces which are pivotably mounted in the set ring and swing freely with respect thereto and are frictionally engaged with the concave surface of the driving and driven parts. A drive shaft connected with the driving part has a piston rigidly connected thereto. The piston is surrounded by a cylindrical bore defining a hollow space within the driving or driven part, which part is axially displaceable on the drive shaft. The hollow space acts as a compression space to accommodate movement of the piston plate, the compression space is connected with a pressure conduit for a pressure medium. The drive train has a pumping system arranged on the drive shaft for actuating the piston and producing an adequate contact pressure for adjusting one of the driving or driven part to produce a frictional lock therebetween via the pivotal disk. A pressure control device is associated with the pump.