Running gear for a 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 comprising: a bogie; a brake linkage one or more of mounted on the bogie or connected to the bogie by at least one bearing element, the brake linkage including a brake bridge mounted on the bogie by the at least one bearing element in the brake bridge, wherein the at least one bearing element is arranged in a bore of the brake bridge; and a mounting disk disposed at an end side of the at least one bearing element between the brake bridge and an adapter arranged as a connector between the brake linkage and the bogie, the mounting disk preventing the at least one bearing element from moving out of the bore in the brake bridge, wherein the at least one bearing element includes plastic.

2. The running gear of claim 1, wherein the at least one bearing element includes a bushing and is arranged in the brake linkage.

3. The running gear of claim 1, wherein a pin mounting means is one or more of arranged on or connected to the bogie and is mounted in the at least one bearing element.

4. The running gear of claim 1, wherein the brake bridge is mounted on the adapter by the at least one bearing element.

5. The running gear of claim 1, wherein the bogie is electrically insulated from the brake linkage by the at least one bearing element that has a dielectric strength of at least 20 kV.

6. The running gear of claim 1, wherein the bogie is vibration-damped over the brake linkage by the at least one bearing element, the brake linkage mounted with the at least one bearing element having an acceleration density response below 20,000 (m/s.sup.2).sup.2/Hz across at least 50% of a frequency spectrum from 10 hertz (Hz) to 100 Hz.

7. The running gear of claim 1, wherein the plastic is polyoxymethylene (POM).

8. The running gear of claim 1, wherein the at least one bearing element has one or more of a length from 30 millimeters (mm) to 200 mm, an outer diameter from 30 mm to 100 mm, an inner diameter from 25 mm to 90 mm, or a wall thickness from 1 mm to 6 mm.

9. The running gear of claim 2, wherein the at least one bearing element is a bushing.

10. The running gear of claim 5, wherein at least one the bearing element has a dielectric strength of at least 40 kilovolts (kV).

11. The running gear of claim 10, wherein the dielectric strength of the at least one bearing element is at least 60 kV.

12. The running gear of claim 11, wherein the dielectric strength of the at least one bearing element is at least 100 kV.

13. The running gear of claim 6, wherein the acceleration density response of the brake linkage is below 10,000 (m/s.sup.2).sup.2/Hz.

14. The running gear of claim 6, wherein the acceleration density response of the brake linkage is below 9,000 (m/s.sup.2).sup.2/Hz.

15. The running gear of claim 6, wherein the acceleration density response of the brake linkage is below 9,000 (m/s.sup.2).sup.2/Hz, across at least 90% of the frequency spectrum from 10 Hz to 100 Hz.

16. The running gear of claim 8, wherein the at least one bearing element has one or more of the length from 50 mm to 60 mm, the outer diameter from 50 mm to 65 mm, the inner diameter from 50 mm to 55 mm, or the wall thickness from 3 mm to 4 mm.

17. The running gear of claim 1, wherein the mounting disk is a spacer.

18. A running gear for a vehicle, the running gear comprising: a bogie; a brake linkage having a brake bridge having a bore; a self-lubricating plastic bearing element disposed in the bore of the brake bridge and coupling the brake linkage to the bogie; and a mounting disk disposed at an end of the bearing element between the brake bridge and an adapter also connecting the brake linkage to the bogie, the mounting disk preventing flow of the bearing element out of the bore.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is explained below in further detail on the basis of the figures:

(2) FIG. 1 shows a brake linkage with a brake bridge mounted on an adapter,

(3) FIG. 2 shows a brake bridge with bushings,

(4) FIG. 3 shows a brake linkage with positions for sensors,

(5) FIG. 4 shows a cross-sectional view of a bushing,

(6) FIG. 5 shows a top view and a side view of a mounting disk, and

(7) FIG. 6 shows a stylized power density spectrum.

DETAILED DESCRIPTION OF THE DRAWINGS

(8) 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.

(9) 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.

(10) 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.

(11) 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.

(12) 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.

(13) 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.