Bogie of a rail vehicle with at least two wheelsets mounted in axleboxes and at least one transverse member

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 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.

4. 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.

5. 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.

6. 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.

7. The bogie according to claim 6, 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.

8. 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.

9. The bogie according to claim 8, 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.

10. 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.

11. 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.

12. 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.

13. The bogie according to claim 12, wherein the damper consists of an elastomer.

14. 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.

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

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

Description

(1) Embodiment examples of the invention are represented in principle in the drawings and described in more detail in the following.

(2) There are shown in:

(3) FIG. 1 a perspective view of a bogie of a rail vehicle with spring levers lying outside,

(4) FIG. 2 a top view of the bogie,

(5) FIG. 3 a side view of the bogie,

(6) FIG. 4 a perspective view of a bogie of a rail vehicle with spring levers lying inside,

(7) FIG. 5 a top view of the bogie and

(8) FIG. 6 a side view of the bogie.

(9) A bogie of a rail vehicle consists substantially of two wheel sets 3 mounted in axle box bearings 4, a cross member 1, axle lever 2, torsion bars 5, spring levers 6 and a bogie pivot.

(10) FIG. 1 shows a perspective view in principle of a bogie of a rail vehicle with spring levers 6 lying outside.

(11) The bogie has two wheel sets 3 each with two wheels 7 on a common axle 8. The axle 8 is connected in an articulated manner to the cross member 1 via the axle box bearings 4, two axle levers 2 and two axle lever joints 9 formed as pivot joints. The cross member 1 is a frame which forms an H shape with the axle lever joints 9 and the axle levers 2 with the axle box bearings 4.

(12) FIG. 2 shows a top view in principle of the bogie from FIG. 1.

(13) The cross member 1 has the at least two torsion bars 5 arranged parallel to the axles 8 of the wheel sets 3. The respective central area of the torsion bars 5 is connected to the cross member 1. The end of the torsion bar 5 comprises the spring lever 6, wherein the end of the spring lever 6 acts on the axle box bearing 4. Thus the torsion bars 5 and the spring levers 6 are the primary suspension or a part of the primary suspension of the bogie.

(14) FIG. 3 shows a side view in principle of the bogie from FIG. 1.

(15) The end area of the torsion bar 5 penetrates the arm of the H-shaped cross member 1. For this, the latter has an opening 10. Here, the torsion bar 5 can be mounted in the cross member 1. The axle lever joints 9 are components of the H-shaped cross member 1, wherein the axle levers 2 extend the arms of the H-shaped cross member 1.

(16) The torsion bar 5 is formed circular and/or polygonal in cross section. For this, it can have profiles along its length. The torsion bars 5 and the spring levers 6 can advantageously consist of a fibre composite material.

(17) The central area of the torsion bar 5 can be located in a rotationally fixed manner in a sleeve as part of the cross member 1. For this, at least this central area and the opening of the sleeve are formed polygonal in cross section. The end areas of the torsion bar 5 each penetrate the opening 10 on both arms and comprise the spring levers 6. Here, the torsion bar 5 and the spring levers 6 can also be formed in one piece. The openings 10 can each be a guide or a radial bearing for the respective area of the torsion bar 5.

(18) FIG. 4 shows a perspective view in principle of a bogie of a rail vehicle with spring levers 6 lying inside.

(19) In this alternative embodiment, the fixed components of the guides or the radial bearings 11 can also be connected to the cross member 1.

(20) FIG. 5 shows a top view in principle of the bogie from FIG. 4.

(21) The guides or the radial bearings 11 can thus be located between the axle levers 2.

(22) FIG. 6 shows a side view in principle of the bogie from FIG. 4.

(23) The guides or the radial bearings 11 are arranged spaced apart above the axle levers 2 relative to the rails which accommodate and guide the wheel sets 3, with the result that the ends of the spring levers 6 thus act on the end areas of the axle levers 2 and thus on the axle box bearings 4. Instead of one guide or one radial bearing 11, two guides or two radial bearings can also be arranged spaced apart from each other, with the result that the spring lever 6 can be located between same.

(24) At least one damper made of an elastomer, which can consist in particular of rubber, can be located between the end areas of the axle lever 2 and of the spring lever 6.

(25) The cross member 1 represents a base body with the elements for the axle lever joints 9 and with fixing elements for attachment parts. For this, the base body can consist of a metal and/or a fibre composite material and thus also be realized with a composite construction.

(26) Attachment parts can be for example air springs as spring element and thus components of a secondary suspension, braking devices for the wheels 7 and drives.

REFERENCE NUMBERS

(27) 1 cross member 2 axle lever 3 wheel set 4 axle box bearing 5 torsion bar 6 spring lever 7 wheel 8 axle 9 axle lever joint 10 opening 11 radial bearing