Generator system for rail vehicles

Patent metadata

Field	Value
Publication number	US-10703392-B2
Application number	US-201615579315-A
Country	US
Kind code	B2
Filing date	Jun 8, 2016
Priority date	Jun 12, 2015
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

The disclosure relates to a generator system for rail vehicles, for example, a system including a generator with a rotor and a stator, and a journal box unit. The journal box unit may include a bearing for mounting an axle, and a bearing housing. An end cap is arranged on the front face of the axle. The end cap is connected to the axle for co-joint rotation therewith, and the stator is connected to the bearing housing. A friction wheel is arranged on the outer circumferential surface of the end cap, the friction wheel being designed as the rotor of the generator.

First claim

The invention claimed is:

1. A generator system for rail vehicles, comprising:
a generator, with a rotor and a stator, as well as a journal box unit, wherein the stator is arranged radially inside of the rotor and the journal box unit comprises a bearing for support of an axle and a bearing housing contacting the bearing;
an end cap is arranged on a front end of the axle and a co-joint connection is provided between the end cap and axle;
the stator is connected with the bearing housing; and
a friction wheel is arranged on an outer circumferential surface of the end cap, with the friction wheel configured as a rotor of the generator.

2. The generator system of claim 1 , wherein the end cap and the friction wheel have, on outer circumferential surfaces thereof, profiling that corresponds to each other.

3. The generator system of claim 1 , wherein the outer circumferential surface of the end cap is coated with a coarse material that provides a profiling on the outer circumferential surface.

4. The generator system of claim 1 , wherein the outer circumferential surface of the end cap has an elastic rubber surface.

5. The generator system of claim 1 , wherein the bearing housing only partially encloses the bearing.

6. The generator system of claim 1 , wherein a dual-row roller bearing is arranged in the bearing housing.

7. The generator system of claim 1 , wherein the generator has an axis of rotation that is arranged radially within a contour of the bearing housing.

8. A generator system for rail vehicles, comprising:
an axle;
a generator including a rotor, a stator arranged radially inside of the rotor, and a journal box unit, wherein the journal box unit includes a bearing housing connected to the stator and a bearing configured to support the axle;
an end cap arranged on and connected to a front end of the axle; and
a friction wheel arranged on an outer circumferential surface of the end cap;
wherein the friction wheel is the rotor of the generator.

9. The generator system of claim 8 , wherein the end cap and the friction wheel have, on respective outer circumferential surfaces thereof, profiling that corresponds to each other.

10. The generator system of claim 8 , wherein the outer circumferential surface of the end cap is coated with a coarse material that provides a profiling on the outer circumferential surface.

11. The generator system of claim 8 , wherein the outer circumferential surface of the end cap has an elastic rubber surface.

12. The generator system of claim 8 , wherein the bearing housing only partially encloses the bearing.

13. The generator system of claim 8 , wherein a dual-row roller bearing is arranged in the bearing housing.

14. The generator system of claim 8 , wherein the generator has an axis of rotation that is arranged radially within a contour of the bearing housing.

15. The generator system of claim 1 , wherein the bearing housing is configured as an adapter that encloses less than 50% of the bearing.

16. The generator system of claim 1 , wherein the endcap is a single endcap and the friction wheel contacts only the single endcap.

Assignees

• Schaeffler Technologies Ag

Inventors

• Seybold Alexander
• Marquardt Christoph
• Stitzinger Rupert

Classifications

• Y02T30/00

  Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance · CPC title

• B61F15/26

  Covers; Sealing thereof · CPC title

• H02K7/1846

  structurally associated with wheels or associated parts (dynamos arranged in the wheel hub of cycles B62J6/12) · CPC title

• B61D43/00 Primary

  Devices for using the energy of the movements of the vehicles · CPC title

• B61F15/12

  with roller, needle, or ball bearings · CPC title