Generator system for rail vehicles

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.

Claims

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.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Additional particulars, features, combinations of features and effects based on the disclosure are gleaned from the following specification of an embodiment of the disclosure, and from the drawings. Shown in these are:

(2) FIG. 1: an embodiment of a disclosure-specific generator system.

(3) FIG. 2: a partial cross-sectional view of a portion of the generator system of FIG. 1.

DETAILED DESCRIPTION

(4) FIG. 1 schematically depicts an embodiment of a generator system 1 in a front view. FIG. 2 schematically depicts a partial cross-sectional view of a portion of generator system 1. Generator system 1 comprises a generator 2 and a journal box unit 3. Journal box unit 3 comprises a roller bearing 11 for support of an axle 12.

(5) The roller bearing 11 comprises an inner ring 13, an outer ring 14 and roller elements 15 arranged between them. On the outer ring of the roller bearing a bearing housing 4 is arranged, which is not closed and which only partially surrounds the roller bearing. The bearing housing 4 is an adapter, which can be connected with the rail vehicle.

(6) On the front face of the axle 12, an end cap 5 is arranged. End cap 5 is co-joint connected by means of three connection elements 6 with the axle. On the outer circumferential surface 7 of end cap 5, a friction wheel 8 makes contact, with friction wheel 8 configured as a rotor 9 of generator 2. This means that friction wheel 8 rolls on the outer circumferential surface 7 of end cap 5. Rotor 9 and friction wheel 8 respectively are thus driven by the turning motion of the axle, through which current is generated in generator 2. Rotor 9 is in addition configured as a casing. by the turning motion of the axle, through which current is generated in generator 2. Rotor 9 is in addition configured as a casing.

(7) Generator 2 includes the already described rotor 9 as well as a stator 10. Rotor 9 is supported by a rotor support, not shown, on stator 10. The rotor support is preferably configured as a roller bearing, especially as a rolling bearing. In addition, stator 10 is attached to the fixed bearing housing 4.

(8) LIST OF REFERENCE SYMBOLS

(9) 1 generator system

(10) 2 generator

(11) 3 journal box unit

(12) 4 bearing housing

(13) 5 end cap

(14) 6 connection element

(15) 7 outer circumferential surface

(16) 8 friction wheel

(17) 9 rotor

(18) 10 stator

(19) 11 roller bearing

(20) 12 axle

(21) 13 inner ring

(22) 14 outer ring

(23) 15 roller elements