RUNNING GEAR FOR A RAIL VEHICLE, AND BEARING ELEMENT FOR A RUNNING GEAR

Abstract

The aim of the invention is to provide a running gear with a mount for a brake linkage on a bogie, wherein the mount has a long service life and requires little maintenance. The transmission of shocks and vibrations between the brake linkage and the bogie is reduced, and the bogie and the brake linkage are electrically insulated from each other. A running gear for a rail vehicle including a bogie and a brake linkage is proposed, having at least one bearing element. The brake linkage is mounted on the bogie and/or is connected to the bogie by means of the at least one bearing element, and the at least one bearing element has a plastic and/or consists of a plastic.

Claims

1. A running gear for a rail vehicle, comprising: a bogie and a brake linkage, with at least one bearing element; wherein the brake linkage is mounted on the bogie and/or connected to the bogie by means of the at least one bearing element; and wherein the at least one bearing element has a plastic and/or consists of a plastic.

2. A running gear according to claim 1, wherein the at least one bearing element is a bushing, wherein the bearing element is arranged in the brake linkage.

3. A running gear (100) according to claim 1, wherein a pin mounting means is arranged on the bogie and/or connected to the bogie and the pin mounting means is mounted in the bearing element.

4. A running gear according to claim 1, wherein the brake linkage comprises a brake bridge (14), wherein the brake bridge (14) is mounted on the bogie by means of the at least one bearing element in the brake bridge, wherein the at least one bearing element is especially arranged in a bore of the brake bridge.

5. A running gear according to claim 4, wherein the bogie comprises an adapter and/or a suspension bracket, wherein the brake bridge is mounted on the adapter and/or on the suspension bracket by means of the bearing element.

6. A running gear according to claim 1, wherein the bogie is electrically insulated from the brake linkage by means of the at least one bearing element, wherein the bearing element has a dielectric strength of at least 20 kV.

7. A running gear according to claim 1, wherein the bogie is vibration-damped over the brake linkage by means of the at least one bearing element, wherein a mounting property of the at least one bearing element is formed so that, during a service life test according to DIN EN 61 373, an acceleration density response of the brake linkage, especially mounted with the bearing element, is below 20,000 (m/s.sup.2).sup.2/Hz across at least 50% of the frequency spectrum from 10 Hz to 100 Hz.

8. A running gear according to claim 1, wherein the plastic is polyoxymethylene (POM) and/or that the plastic is a self-lubricating plastic.

9. A running gear according to claim 1, wherein the bearing element has a length (L) from 30 mm to 200 mm and/or an outer diameter (A) from 30 mm to 100 mm, and/or an inner diameter (I) from 25 mm to 90 mm, and/or a wall thickness (W) from 1 mm to 6 mm.

10. A running gear according to claim 1, wherein a mounting end element, in particular a mounting disk (25) is provided.

11. A bearing element, in particular bushing, for a running gear according to claim 1, characterized in that the bearing element has a plastic and/or consists of a plastic.

12. A running gear according to claim 2, characterized in that the at least one bearing element is a bushing wherein the bearing element (22) is arranged in a bore of the brake linkage.

13. A running gear according to claim 6, wherein the bearing element has a dielectric strength of at least 40 kV.

14. (canceled)

15. A running gear according to claim 13, wherein the bearing element has a dielectric strength of at least 60 kV.

16. (canceled)

17. A running gear according to claim 15, wherein the bearing element has a dielectric strength of at least 100 kV.

18. A running gear according to claim 7, wherein the acceleration density response of the brake lining is below 10,000 (m/s.sup.2).sup.2/Hz.

19. A running gear according to claim 7, wherein the acceleration density response of the brake lining is below 9,000 (m/s.sup.2).sup.2/Hz.

20. A running gear according to claim 7, wherein the acceleration density response of the brake lining is below 9,000 (m/s.sup.2).sup.2/Hz, across at least 90% of the frequency spectrum of 10 Hz to 100 Hz.

21. A running gear according to claim 9, wherein the bearing element has a length (L) from 50 mm to 60 mm, and/or an outer diameter (A) from 50 mm to 65 mm, and/or an inner diameter (I) from 50 mm to 55 mm, and/or a wall thickness (W) from 3 mm to 4 mm.

22. A running gear according to claim 10, wherein the mounting disk is a spacer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The invention is explained below in further detail on the basis of the figures:

[0040] FIG. 1 shows a brake linkage with a brake bridge mounted on an adapter,

[0041] FIG. 2 shows a brake bridge with bushings,

[0042] FIG. 3 shows a brake linkage with positions for sensors,

[0043] FIG. 4 shows a cross-sectional view of a bushing,

[0044] FIG. 5 shows a top view and a side view of a mounting disk, and

[0045] FIG. 6 shows a stylized power density spectrum.

DETAILED DESCRIPTION OF THE DRAWINGS

[0046] FIG. 1 shows a brake linkage 10 for a running gear 100 of a rail vehicle. The brake linkage 10 comprises brake lining retainers 11, brake linings 12, brake levers 13, as well as a brake bridge 14. FIG. 1 also shows an adapter 15 of a brake linkage, which is not specified in further detail. The brake bridge 14 is connected with the adapter 15 by means of pins 16 wherein the adapter 15, in turn, may be arranged on the bogie by means of fastening screws 17. The brake levers 13 are actuated by a brake cylinder 30.

[0047] FIG. 2 shows a perspective view of the brake bridge 14. The brake bridge 14 comprises two arms 18 for the fastening of the brake levers 13. Furthermore, a connection portion 19 is arranged in an upper portion of the brake bridge 14. The connection portion 19 comprises two through-bores 20. In each of the through-bores 20, a bearing element 22 made from a plastic is arranged as a bushing 21. Furthermore, a mounting means 23 is arranged in the bushing 21 in the form of a pin 16. The mounting 25 provided in FIG. 2 in the right portion of the connection portion 20 comprises, in addition to a bushing 21 and a pin 16, a mounting end element 26 from a plastic which is formed as a mounting disk 25. To mount the brake linkage 10, the pins 16, as shown in FIG. 1, may be arranged in mounting holders 27 of the adapter 15 wherein further bushings 21 may be found in the mounting holders 27 of the adapter 15. Furthermore, it is also possible that the pins 16 are directly connected with the bogie or mounted on the bogie. It is also possible that the pins 16 are arranged at the end side in suspension brackets of the bogie.

[0048] FIG. 3 shows a side view of a brake linkage 10 wherein especially the positions of the sensors 28 for the recording of an acceleration density response are shown.

[0049] FIG. 4 shows a cross-section through a center plane of a bushing 21. The bushing 21 has a length L of 57 mm and an outer diameter A of 60 mm. Due to a wall thickness W of 3.5 mm, the inner diameter I of the bushing 21 is therefore 53 mm.

[0050] FIG. 5 shows a top view of a mounting end element 26 formed as a mounting disk 25. The mounting disk 25 has a diameter D of 70 mm and an opening diameter O of the inner opening of 35 mm. Furthermore, the mounting disk has a thickness T of 2.5 mm.

[0051] FIG. 6 finally shows a stylized power density spectrum 29 of an acceleration density response recorded by the sensors 28. The X-axis shows the recorded frequency from 5 to 250 Hz, and the Y-axis shows the power density in units of (m/s.sup.2).sup.2/Hz. Across at least 50% of the frequency range from 10 to 100 Hz, the power density spectrum is below 10,000 (m/s.sup.2).sup.2/Hz.

LIST OF REFERENCE NUMERALS

[0052] 100 Running gear [0053] 10 Brake linkage [0054] 11 Brake linking retainer [0055] 12 Brake lining [0056] 13 Brake lever [0057] 14 Brake bridge [0058] 15 Adapter [0059] 16 Pin [0060] 17 Fastening screw [0061] 18 Arm [0062] 19 Connection portion [0063] 20 Bore [0064] 21 Bushing [0065] 22 Bearing element [0066] 23 Mounting means [0067] 24 Mounting [0068] 25 Mounting disk [0069] 26 Mounting end element [0070] 27 Mounting holder [0071] 28 Sensor [0072] 29 Power density spectrum [0073] 30 Brake cylinder [0074] L Length [0075] A Outer diameter [0076] I Inner diameter [0077] W Wall thickness [0078] D Diameter [0079] O Opening diameter [0080] T Thickness