A drive assembly is provided for a rail vehicle, having at least one motor, at least one wheel set shaft or at least one rail vehicle wheel, and at least one elastic coupling that has at least one elastic device, wherein the at least one elastic coupling is embodied to couple the at least one motor directly to the wheel set shaft or directly to the at least one rail vehicle wheel.

A double-jointed coupling includes a carrier ring with an internal tooth arrangement, a hollow pinion shaft connected to the internal tooth arrangement of the carrier ring, and an intermediate shaft with a coupling tooth arrangement for engagement in the internal tooth arrangement. The coupling tooth arrangement is constructed on the intermediate shaft such as to enable passage of the intermediate shaft through the hollow pinion shaft for passage through the hollow pinion shaft. A thrust ring is arranged on the intermediate shaft in a region of the coupling tooth arrangement and constructed for passage through the hollow pinion shaft.

A double-jointed coupling includes a carrier ring with an internal tooth arrangement, a hollow pinion shaft connected to the internal tooth arrangement of the carrier ring, and an intermediate shaft with a coupling tooth arrangement for engagement in the internal tooth arrangement. The coupling tooth arrangement is constructed on the intermediate shaft such as to enable passage of the intermediate shaft through the hollow pinion shaft for passage through the hollow pinion shaft. A thrust ring is arranged on the intermediate shaft in a region of the coupling tooth arrangement and constructed for passage through the hollow pinion shaft.

An arrangement for a rail vehicle has an electric hollow-shaft motor with a hollow rotor and a wheelset shaft that runs through the hollow rotor. The rotor is separated from the wheelset shaft at least in certain sections by a radial air gap which ensures a mechanical clearance between the wheelset shaft and the rotor. A protective material is arranged in the region of the radial air gap between the rotor and the wheelset shaft. The protective material, in the event of failure of a motor fastening of the hollow-shaft motor and subsequent support of the rotor on the wheelset shaft, separates the rotor from the wheelset shaft. The protective material is softer than the material of the wheelset shaft and softer than at least one material of the rotor.

An arrangement for a rail vehicle has an electric hollow-shaft motor with a hollow rotor and a wheelset shaft that runs through the hollow rotor. The rotor is separated from the wheelset shaft at least in certain sections by a radial air gap which ensures a mechanical clearance between the wheelset shaft and the rotor. A protective material is arranged in the region of the radial air gap between the rotor and the wheelset shaft. The protective material, in the event of failure of a motor fastening of the hollow-shaft motor and subsequent support of the rotor on the wheelset shaft, separates the rotor from the wheelset shaft. The protective material is softer than the material of the wheelset shaft and softer than at least one material of the rotor.

The present disclosure provides a gearbox of a rail vehicle, which belongs to the technical field of gear transmission. The gearbox of the present disclosure comprises a driving shaft, a driven shaft, a first bearing seat and a second bearing seat; the gearbox further comprises: a first roller bearing, a ball bearing, a bearing inner retaining ring and a bearing outer retaining ring for drainage, which are arranged between the first bearing seat and the driving shaft; wherein, the bearing inner retaining ring and the bearing outer retaining ring are provided between the first roller bearing and the ball bearing along an axial direction of the driving shaft, and a first drainage channel is provided on the bearing outer retaining ring, a second drainage channel is provided on the first bearing seat; wherein, the lubricating oil can be guided into the first roller bearing and the ball bearing from the outside of the first bearing seat through the second drainage channel and the first drainage channel in sequence. The present disclosure can greatly improve the lubricating performance of the first roller bearing and the ball bearing on the driving shaft of the gearbox, and is particularly suitable for low-temperature working conditions.

A thread-reinforced joint device for a coupling device of a vehicle drive, particularly of a low-platform vehicle, includes a plurality of coupling elements, at least one thread packet coupling two adjacent coupling elements so that a force is transmittable, a support device arranged on at least one of the coupling elements for axially guiding the at least one thread packet and at least one elastic body, into which, the at least one thread packet and the coupling elements are at least partially embedded. The coupling elements are designed and/or can be positioned so that the thread-reinforced joint device is adaptable to different mounting interfaces of a respective coupling device.

A thread-reinforced joint device for a coupling device of a vehicle drive, particularly of a low-platform vehicle, includes a plurality of coupling elements, at least one thread packet coupling two adjacent coupling elements so that a force is transmittable, a support device arranged on at least one of the coupling elements for axially guiding the at least one thread packet and at least one elastic body, into which, the at least one thread packet and the coupling elements are at least partially embedded. The coupling elements are designed and/or can be positioned so that the thread-reinforced joint device is adaptable to different mounting interfaces of a respective coupling device.

A permanent magnet direct-drive bogie and a rail vehicle thereof are disclosed. The permanent magnet direct-drive bogie comprises a frame (1), a wheel set (2), and a permanent magnet motor (3); the frame (1) comprises a longitudinal beam (11), a cross beam (12) perpendicular to the longitudinal beam (11), and end beams (13) arranged at both ends of the longitudinal beam (11); a hollow shaft (4) is sleeved on an axle (21) of the wheel set (2), a force transmission seat (5) is fixed on the axle (21), the permanent magnet motor (3) is sleeved on the hollow shaft (4), one end of the hollow shaft (4) is connected to the permanent magnet motor (3) through a flexible coupling (6), and the other end of the hollow shaft (4) is connected to the force transmission seat (5) through a flexible coupling (6); both longitudinal sides of the cross beam (12) are provided with protrusions (121); the permanent magnet motor (3) is flexibly connected to the frame (1) through a swing rod (7) and a suspension rod (17), one end of the swing rod (7) is hung on the protrusion (121), the other end is connected to a housing of the permanent magnet motor (3), and the axis of the swing rod (7) is arranged longitudinally; one end of the suspension rod (17) is connected to the housing of the permanent magnet motor (3), and the other end is suspended on the end beam (13); and the permanent magnet motor (3) is laterally movable.

A permanent magnet direct-drive bogie and a rail vehicle thereof are disclosed. The permanent magnet direct-drive bogie comprises a frame (1), a wheel set (2), and a permanent magnet motor (3); the frame (1) comprises a longitudinal beam (11), a cross beam (12) perpendicular to the longitudinal beam (11), and end beams (13) arranged at both ends of the longitudinal beam (11); a hollow shaft (4) is sleeved on an axle (21) of the wheel set (2), a force transmission seat (5) is fixed on the axle (21), the permanent magnet motor (3) is sleeved on the hollow shaft (4), one end of the hollow shaft (4) is connected to the permanent magnet motor (3) through a flexible coupling (6), and the other end of the hollow shaft (4) is connected to the force transmission seat (5) through a flexible coupling (6); both longitudinal sides of the cross beam (12) are provided with protrusions (121); the permanent magnet motor (3) is flexibly connected to the frame (1) through a swing rod (7) and a suspension rod (17), one end of the swing rod (7) is hung on the protrusion (121), the other end is connected to a housing of the permanent magnet motor (3), and the axis of the swing rod (7) is arranged longitudinally; one end of the suspension rod (17) is connected to the housing of the permanent magnet motor (3), and the other end is suspended on the end beam (13); and the permanent magnet motor (3) is laterally movable.