Auxiliary planetary gearbox for motor vehicle, includes synchronisation device for rotation speed difference between ring wheel and coupling rings

摘要

The auxiliary gearbox is designed to be connected to the output side of a main gearbox and its ring wheel (18) is movable in an axial direction and can be connected to coupling rings (10, 16). A device (15) is provided for synchronising the rotation speed difference between the ring wheel and at least one coupling ring. The synchronisation device and coupling ring are mounted coaxially on the ring wheel. A second device (25) on the outer radial side of the ring wheel is designed to connect with the coupling ring. A third device (25a, 25b) follows the synchronisation device.