Rail vehicle unit

Patent metadata

Field	Value
Publication number	US-9643626-B2
Application number	US-201314403781-A
Country	US
Kind code	B2
Filing date	May 29, 2013
Priority date	May 30, 2012
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A rail vehicle unit, having a running gear and a wagon body unit. The wagon body unit is supported on the running gear via a suspension device, a first rotational buffer device and a second rotational buffer device being associated to the running gear and the wagon body unit. The first rotational buffer device and the second rotational buffer device are adapted to damp a rotational motion between the running gear and the wagon body unit about a rotational axis parallel to the height direction. The first rotational buffer device and the second rotational buffer device are configured to form a traction link between the running gear and the wagon body unit.

First claim

The invention claimed is:

1. A rail vehicle unit, comprising
a running gear and a wagon body unit forming two contact partners and defining a longitudinal direction, a transverse direction and a height direction;

said wagon body unit being supported on said running gear via a suspension device;
a first rotational buffer device and a second rotational buffer device being associated to said running gear and said wagon body unit;
said first rotational buffer device and said second rotational buffer device being adapted to damp a rotational motion between said running gear and said wagon body unit about a rotational axis parallel to said height direction;
wherein
said first rotational buffer device and said second rotational buffer device are configured to form a traction link between said running gear and said wagon body unit;
said traction link being configured to transmit at least a major fraction of a total traction force to be transmitted along said longitudinal direction between said running gear and said wagon body unit;
at least one of said first rotational buffer device and said second rotational buffer device is connected to a first contact partner of said two contact partners;
at least one of said first rotational buffer device and said second rotational buffer device having a first contact surface;
a second contact surface being formed at a second contact partner of said two contact partners;
said first contact surface and said second contact surface being configured to contact each other to transmit said fraction of said total traction force between said running gear and said wagon body unit; and
said first contact surface and said second contact surface, in a neutral state of said rail vehicle unit, being separated by a longitudinal gap having a longitudinal gap dimension in said longitudinal direction.

2. The rail vehicle unit according to claim 1 , wherein
said traction link is configured to transmit at least 50% of a remaining fraction of said total traction force;
said remaining fraction being a difference between said total traction force and a suspension fraction of said total traction force transmitted by said suspension device along said longitudinal direction.

3. The rail vehicle unit according to claim 2 , wherein
said longitudinal gap dimension, in particular, is less than 3 mm;
wherein said first contact partner is said running gear, and wherein said second contact partner is said wagon body unit.

4. The rail vehicle unit according to claim 1 , wherein
said running gear comprises a frame body supported on at least one wheel unit via a primary suspension device and two wheel bearing units, each associated to one wheel of said wheel unit;
said wheel unit defining a track width in said transverse direction and a traction force plane, said traction force plane, in a neutral state of said rail vehicle unit, extending through a wheel to rail contact point of one of said wheels and being perpendicular to said transverse direction;
said wheel unit defining a bearing center width between centers of said wheel bearing units in said transverse direction and a bearing center plane, said bearing center plane, in a neutral state of said rail vehicle unit, extending through said center of one of said wheel bearing units and being perpendicular to said transverse direction;
said first rotational buffer device having a volumetric center;
said volumetric center, in said transverse direction, having a transverse traction force plane distance with respect to said traction force plane, said traction force plane distance being less than 20% of said track width;
or
said volumetric center, in said transverse direction, having a transverse bearing center plane distance with respect to said bearing center plane, said bearing center plane distance being less than 20% of said bearing center width.

5. The rail vehicle unit according to claim 1 , wherein
said running gear comprises a frame body having a first longitudinal beam, a second longitudinal beam and a transverse beam unit providing a structural connection between said longitudinal beams in said transverse direction, such that a substantially H-shaped configuration is formed;
said first rotational buffer device being spatially associated to said first longitudinal beam;
said first rotational buffer device being spatially associated to an end section of said first longitudinal beam;
said first rotational buffer device being connected to a first rotational buffer interface section of said first longitudinal beam, said first rotational buffer interface section, in said longitudinal direction, facing towards a center of said running gear;
said second rotational buffer device being spatially associated to one of said first longitudinal beam and said second longitudinal beam;
said second rotational buffer device being spatially associated to an end section of one of said first longitudinal beam and said second longitudinal beam;
said second rotational buffer device being connected to a second rotational buffer interface section of one of said first longitudinal beam and said second longitudinal beam, said second rotational buffer interface section, in said longitudinal direction, facing towards a center of said running gear.

6. The rail vehicle unit according to claim 1 , wherein
a third rotational buffer device and a fourth rotational buffer device are provided;
said third rotational buffer device and said fourth rotational buffer device being configured to form a further traction link between said running gear and said wagon body unit;
said further traction link being configured to transmit at least a major fraction of a total traction force to be transmitted along said longitudinal direction between said running gear and said wagon body unit.

7. The rail vehicle unit according to claim 1 , wherein
said first rotational buffer device and said second rotational buffer device are spaced in said longitudinal direction
or
said first rotational buffer device and said second rotational buffer device are spaced in said transverse direction.

8. The rail vehicle unit according to claim 3 , wherein
at least one of said first rotational buffer device and said second rotational buffer device is adapted to restrict motion between said contact partners in said longitudinal direction while allowing motion between said contact partners in said transverse direction
or
at least one transverse buffer device is provided, said transverse buffer device restricting motion between said contact partners in said transverse direction; said at least one transverse buffer device being associated to a transverse beam unit of said running gear.

9. The rail vehicle unit according to claim 1 , wherein
at least one of said first rotational buffer devices comprises a buffer unit with a first support component, a second support component and at least one buffer component;
said at least one buffer component, in a support direction parallel to said longitudinal direction, being arranged between said first support component and said second support component;
said at least one buffer component being adapted to damp a motion between said first support component and said second support component in said support direction;
said at least one buffer component comprising at least one plastic material.

10. The rail vehicle unit according to claim 9 , wherein
at least one of said first support component, said second support component and said at least one buffer component comprises a substantially disc-shaped element or a substantially ring-shaped element defining a radial direction, said radial direction running transverse to said support direction

Assignees

• Bombardier Transp Gmbh

Inventors

• Wolf Andreas
• Wusching Michael
• Zanutti Cedric

Classifications

• B61F5/12 Primary

  incorporating dampers · CPC title

• B61F5/00 Primary

  Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves · CPC title