Dual Coupling System for Driving Rail Vehicles

A dual coupling system for the drive of rail vehicles, having a first coupling unit (1), which is assigned to a drive assembly and compensates axial displacements and angular offsets, having a second coupling unit (2), which is assigned to a transmission assembly and which compensates angular offsets, and having a connecting shaft (8), which is arranged between the first and second coupling units (1, 2) and which is formed at least as a single piece, wherein the first coupling unit (1) is connected interlockingly and/or frictionally via a hub (12) to a drive shaft (6), wherein the hub (12) has a crowned external toothing (5) which meshes with an internal toothing (4) of a sleeve (3), wherein the sleeve (3) is frictionally and/or interlockingly detachably connected in a first end region to the connecting shaft (8), and wherein the second coupling unit (2) is arranged opposite the first coupling unit (1) in a second end region of the connecting shaft (8) and is frictionally and/or interlockingly detachably connected to said connecting shaft, wherein the second coupling unit (2) has a coupling element (9) which is directed toward the first coupling unit (1) and which allows a transmission assembly to be arranged and coupled in the region of the connecting shaft (8) between the first and second coupling units (1, 2).