Wheel arrangement for a rail vehicle
AssigneeBombardier Transportation GmbH
InventorsLukasz Krzanowski, Daniel Wagener
Life of this patent
Estimating the term…
Abstract
A rail vehicle, such as a light rail vehicle, can include a wheel unit and a support unit. The wheel unit can define an axis of rotation of the wheel unit. The support unit can be configured to be connected to a rail vehicle structure that defines a vehicle longitudinal direction, a vehicle transverse direction, and a vehicle height direction. The support unit can be configured to connect the wheel unit to the rail vehicle structure such that the wheel unit is rotatable about the axis of rotation. The support unit can also include a primary suspension unit configured to provide resilient support of the rail vehicle structure on the wheel unit at least in the vehicle height direction.
Claims19
A wheel arrangement for a rail vehicle, comprising:
- a wheel unit;
- and
- a support unit,
- said wheel unit defines an axis of rotation of said wheel unit,
- said support unit is configured to be connected to a rail vehicle structure of said rail vehicle defining a vehicle longitudinal direction, a vehicle transverse direction and a vehicle height direction;
- said support unit is configured to connect said wheel unit to said rail vehicle structure such that said wheel unit is rotatable about said axis of rotation;
- said support unit comprises a primary suspension unit configured to provide resilient support of said rail vehicle structure on said wheel unit at least in said vehicle height direction;
- said primary suspension unit has a primary suspension transverse rigidity in a direction parallel to said axis of rotation, wherein a distribution of said primary suspension transverse rigidity across said primary suspension unit, in a static state of said rail vehicle on a straight level track under a nominal load, defines a tilt axis of said wheel unit parallel to said vehicle longitudinal direction;
- said distribution of said primary suspension transverse rigidity is such that, in said vehicle height direction, said tilt axis is located below said axis of rotation;
- said support unit comprises an axle unit with a wheel bearing unit and a wheel support unit;
- and
- wherein:
- said wheel bearing unit forms a bearing for said wheel unit;
- said primary suspension unit is located kinematically in series between said wheel support unit and said wheel bearing unit, such that said wheel support unit is supported on said wheel bearing unit via said primary suspension unit;
- and/or
- said wheel support unit is essentially tube shaped.
Dependencies are inferred from the claim text.