BOGIE OF A RAIL VEHICLE WITH AT LEAST TWO WHEELSETS MOUNTED IN AXLEBOXES AND AT LEAST ONE TRANSVERSE MEMBER

• US 20190322296A1
• Filed: 12/07/2017
• Published: 10/24/2019
• Est. Priority Date: 12/08/2016
• Status: Active Grant

• Current Assignee: Cg Rail - Chinesisch-Deutsches Forschungs- Und Entwicklungszentrum Fur Bahn- Und Verkehrstechnik Dresden GmbH, CRRC Qingdao Sifang Co. Ltd (CRRC Corp. Ltd.)
• Original Assignee: CRRC Qingdao Sifang Co. Ltd (CRRC Corp. Ltd.)
• Inventors: MA, Lijun, ZHOU, Pingyu, SUN, Houli, ZHANG, Xiongfei, FAN, Yunjie, WANG, Xiaoming, HUFENBACH, Werner, ULBRICHT, Andreas
• Granted Patent: US 11,254,335 B2
• Time in Patent Office: Days
• CPC Class Codes: B61F 3/02 with more than one axle
• CPC Class Codes: B61F 5/30 Axle-boxes mounted for movement under spring control in vehicle or bogie underframes B61F5/36 takes precedence over B61F5/305 - B61F5/34
• CPC Class Codes: B61F 5/52 Bogie frames

Abstract

The invention relates to bogies for railway vehicles with at least two wheelsets mounted in axleboxes and at least one transverse member. The bogies are in particular characterized in that they have a lightweight design and can be produced at low cost. The axleboxes of a wheelset are articulated to the transverse member via two axle levers so that the axle levers form an H shape with the axleboxes and the transverse member. The transverse member has at least two torsion bars arranged in parallel to the axles of the wheelsets, said torsion bars being firmly connected to the transverse member. The torsion bars have spring levers so that the end portion of the spring lever not connected to the torsion bar acts upon the axlebox.

Claims

1. A bogie of a rail vehicle with at least two wheel sets mounted in axle box bearings and at least one cross member, wherein the axle box bearings of a wheel set are connected in an articulated manner to the cross member via two axle levers, with the result that the axle levers form an H shape with the axle box bearings and the cross member, that the cross member has at least two torsion bars arranged parallel to the axles of the wheel sets, that the torsion bars have at least one area in which they are connected in a rotationally fixed manner to the cross member, and that the torsion bars have spring levers such that the end area, not connected to the torsion bar, of the spring lever acts on the axle box bearing.

2. The bogie according to claim 1, wherein two torsion bars are arranged one after the other in longitudinal direction on the cross member, that the ends facing each other of the torsion bars are connected with their end areas to the cross member and that the other ends of the torsion bars comprises the spring levers.

3. The bogie according to claim 1, wherein the cross member has an H shape in cross section, that the end areas of a torsion bar loosely penetrate the opposite arms of the cross member, that the central area of the torsion bar is securely connected to the cross member and that an axle lever each is connected in an articulated manner to an end of the arm of the cross member, with the result that the axle lever joints are components of the cross member.

4. The bogie according to claim 1, wherein an end area of a torsion bar is located as movable part in at least one radial bearing connected to the cross member, that the end area of the torsion bar penetrates the radial bearing and that the end of the torsion bar after the radial bearing comprises the spring lever.

5. The bogie according to claim 1, wherein the torsion bar has the shape of a conic section and/or of a polygon in cross section.

6. The bogie according to claim 1, wherein the torsion bars and/or the spring levers consist of a metal or a fibre composite material or have a composite construction of at least one metal and at least one fibre composite material.

7. The bogie according to claim 1, wherein at least one damper is located between the end areas of the axle lever and the spring lever.

8. The bogie according to claim 6, wherein the damper consists of an elastomer.

9. The bogie according to claim 1, wherein the cross member is a base body with the elements for the axle lever joints of the axle levers and with fixing elements for attachment parts and that the base body consists of a metal and/or a fibre composite material.

10. The bogie according to claim 1, wherein the cross member is a beam or a frame.

11. The bogie according to claim 1, wherein the bogie has further spring elements for secondary suspension and a bogie pivot.

12. The bogie according to claim 2, wherein the cross member has an H shape in cross section, that the end areas of a torsion bar loosely penetrate the opposite arms of the cross member, that the central area of the torsion bar is securely connected to the cross member and that an axle lever each is connected in an articulated manner to an end of the arm of the cross member, with the result that the axle lever joints are components of the cross member.

13. The bogie according to claim 2, wherein an end area of a torsion bar is located as movable part in at least one radial bearing connected to the cross member, that the end area of the torsion bar penetrates the radial bearing and that the end of the torsion bar after the radial bearing comprises the spring lever.

14. The bogie according to claim 2, wherein the torsion bars and/or the spring levers consist of a metal or a fibre composite material or have a composite construction of at least one metal and at least one fibre composite material.

15. The bogie according to claim 14, wherein the damper consists of an elastomer.

16. The bogie according to claim 3, wherein the torsion bars and/or the spring levers consist of a metal or a fibre composite material or have a composite construction of at least one metal and at least one fibre composite material.

17. The bogie according to claim 16, wherein the damper consists of an elastomer.

18. The bogie according to claim 4, wherein the torsion bars and/or the spring levers consist of a metal or a fibre composite material or have a composite construction of at least one metal and at least one fibre composite material.

19. The bogie according to claim 18, wherein the damper consists of an elastomer.