A traction rod assembly for a bogie system includes a body extending between first and second ends. A bush assembly is coupled with the first end and includes a first component having a passage, and a second component disposed within the passage of the first component. The bush assembly includes an eccentric offset such that a center of the first component is offset from a center of the second component. A bearing assembly is coupled with the second end of the body and includes cylindrical bearings and spacers that are concentric with a passage disposed at the second end of the body. The bush assembly is coupled with a frame of the bogie system and the bearing assembly is operably with an axle assembly of the bogie system. The bearing assembly allows rotation of the body relative to the axle assembly of the bogie system.

A chamber device for a liquid composite spring, includes: an outer wall; an upper liquid chamber formed in an upper portion of the outer wall, the upper liquid chamber being filled with liquid; and a lower liquid chamber formed in a lower portion of the outer wall, the lower liquid chamber being filled with liquid and in communication with the upper liquid chamber. A bottom of the outer wall is provided with a sealing member for sealing the lower liquid chamber. The sealing member is deformable, so that the lower liquid chamber is formed as a flexible chamber. The chamber device for the liquid composite spring has a rigid outer wall and a flexible sealing member. The volume and shape of the lower liquid chamber can be changed through the flexible sealing member, so that the lower liquid chamber is formed as a flexible chamber.

A bogie of a rail vehicle includes a frame, which includes two box-shaped longitudinal beam main bodies and a transverse beam main body; a wheelset, which includes an axle box, an axle and wheels mounted at two ends of the axle; a drive system, which at least includes a gearbox and a drive motor. Practice has proved that the two axle boxes arranged on the inner sides of the two longitudinal beam main bodies can reduce a volume by about 10%, and reduce a weight by about 10% to 15%, which can further reduce air resistance, and realize energy saving and emission reduction. The longitudinal beam main body is located on an inner side of a wheel, a span of the two the longitudinal beam main bodies is reduced, and the torsional rigidity of the frame is reduced, which is beneficial to improving a curve passing capacity.

A bogie of a rail vehicle includes a frame, which includes two box-shaped longitudinal beam main bodies and a transverse beam main body; a wheelset, which includes an axle box, an axle and wheels mounted at two ends of the axle; a drive system, which at least includes a gearbox and a drive motor. Practice has proved that the two axle boxes arranged on the inner sides of the two longitudinal beam main bodies can reduce a volume by about 10%, and reduce a weight by about 10% to 15%, which can further reduce air resistance, and realize energy saving and emission reduction. The longitudinal beam main body is located on an inner side of a wheel, a span of the two the longitudinal beam main bodies is reduced, and the torsional rigidity of the frame is reduced, which is beneficial to improving a curve passing capacity.

Running gear for a rail vehicle includes a first drive unit, a running gear frame and a wheelset, wherein the first drive unit is supported via a first spring device and a second spring device on a first wheelset bearing housing or on a first swing arm and via a third spring device and a fourth spring device on a second wheelset bearing housing or on a second swing arm, where a first damper device, arranged between the first wheelset bearing housing or the first swing arm and the drive unit, is advantageously connected in parallel with the first spring device, the second spring device, the third spring device and the fourth spring device, where the damping device has a damper and, connected in series therewith, a first stop buffer and a second stop buffer to achieve a space-saving drive bearing having effective suspension and damping.

An assembly transmits longitudinal forces in a rail vehicle. The assembly contains a first and second hydraulic axle link bearing, a wheel set, and a rotary frame. Each axle link bearing has a housing element and a first and second chamber filled with a fluid. In the event of a change in the position of the housing elements relative to each other, fluid is exchanged between connected chambers of the axle link bearings. The fluid exchange is produced by a change in the position of the housing elements relative to each other, and the change in position causes the transmission of longitudinal forces which are transmitted between the wheel set and the rotary frame via the axle link bearings. A first chamber of the first axle link bearing is connected to a first chamber of the second axle link bearing via a damping element in order to exchange fluid.

A load measuring device for a railcar bogie in which a vibrationproof rubber between an axle box and a bogie frame includes a vertical load fluctuation sensor in parallel with the vibrationproof rubber and configured to deform in conjunction with elastic deformation of the vibrationproof rubber in a vertical direction, the vibrationproof rubber supporting a downward load from the bogie frame. The vertical load fluctuation sensor changes an electric output by the deformation of the vertical load fluctuation sensor in conjunction with the elastic deformation of the vibrationproof rubber in the vertical direction.

Running gear for a rail vehicle includes a first drive unit, a running gear frame and a wheelset, wherein the first drive unit is supported via a first spring device and a second spring device on a first wheelset bearing housing or on a first swing arm and via a third spring device and a fourth spring device on a second wheelset bearing housing or on a second swing arm, where a first damper device, arranged between the first wheelset bearing housing or the first swing arm and the drive unit, is advantageously connected in parallel with the first spring device, the second spring device, the third spring device and the fourth spring device, where the damping device has a damper and, connected in series therewith, a first stop buffer and a second stop buffer to achieve a space-saving drive bearing having effective suspension and damping.

A chassis for rail vehicles, particularly with inside-supported wheelsets, wherein the drive unit is elastically supported transversely to the travel direction via spring devices within the chassis frame, where the vibrational behavior is optimized and the space available for the drive unit is enlarged because the spring devices are supported directly on the housing of the bearing of the wheelset.

The invention relates to a shock absorber with a housing, an inner pipe arranged in the housing, a piston rod, a piston which is arranged at that end of the piston rod, and which piston divides the interior of the inner pipe into a lower chamber and an upper chamber, a first valve arrangement which is arranged on the piston, and a third valve arrangement which is arranged at the lower end of the inner pipe and by means of which the working medium which is held in the interior of the housing, serving as a tank, can flow out of the interior of the housing, only into the lower chamber when the piston moves in the inner pipe. The shock absorber is distinguished by the fact that a hydraulic pump drive is arranged between a first connection element of the lower chamber of the inner pipe and a second connection element at the upper chamber of the inner pipe.