FRICTION RING ELEMENT, FRICTION RING SET FOR ARRANGING ON THE WHEEL WEB OF A TRACK WHEEL, AND TRACK WHEEL BRAKE

Abstract

In order to provide a development of friction ring elements for a friction ring set for arranging on the wheel web of a track wheel in order to form a track wheel brake, wherein the friction ring elements can be simply and cost-effectively produced and can be easily fitted with linking elements, a friction ring element (10) is proposed for a friction ring set (200) for arranging on the wheel web (2) of a track wheel (1) for a railway vehicle in order to form a track wheel brake (100), wherein the friction ring element (10) has a friction ring (11) and multiple linking elements (12, 13) designed as separate components and arranged on the friction ring (11), and wherein at least some of the linking elements (12, 13) are force-lockingly connected to the friction ring (11).

Claims

1. A friction ring element (10) for a friction ring set (200) for arranging on the wheel web (2) of a track wheel (1) for a rail vehicle in order to form a track wheel brake (100), wherein the friction ring element (10) has a friction ring (11) and several linking elements (12, 13) configured as separate components and arranged on the friction ring (11), characterized in that at least some of the linking elements (12, 13) are force-lockingly connected to the friction ring (11).

2. A friction ring element (10) according to claim 1, wherein the linking elements (12, 13) force-lockingly connected to the friction ring (11) are each pressed into a corresponding opening (14) in the friction ring (11).

3. A friction ring element (10) according to claim 1, wherein the friction ring (11) is cut out of a flat metal material, wherein the friction ring (11) is preferably cut out of flat steel material or flat aluminium material.

4. (canceled)

5. A friction ring element (10) according to claim 1, wherein the linking elements (12, 13) and the friction ring (11) are formed of different metallic materials, in particular forming a material pairing unsuitable for a favourable welding process.

6. A friction ring element (10) according to claim 1, wherein the linking elements (12) form cooling elements, by means of which in the arrangement of the friction ring element (10) to the wheel web (2) of a track wheel (1), a cooling air flow can be formed between the friction ring (11) and the wheel web (2).

7. A friction ring element (10) according to claim 1, wherein the linking elements (13) form connecting elements, by means of which in the arrangement of the friction ring element (10) to the wheel web (2) of a track wheel (1), the friction ring (11) is supported on the wheel web (2) of the track wheel (2) in the direction of rotation (U) with reference to the axis of rotation (A) of the track wheel (1), wherein the connection elements (13) preferably have a recess (18) with two stop walls (19) parallel to each other, and the stop walls (19) in the arrangement on the wheel web (2) on a track wheel (1) are aligned parallel to a radius (R) from the rotational axis (A) of the track wheel (1), wherein further preferably the connecting element (13) is secured against rotation relative to the friction ring (11) by means of a positive-locking element (17), particularly preferably a pin.

8. (canceled)

9. (canceled)

10. A friction ring element (10) according to claim 1, wherein the linking elements (12, 13) are configured as a bolt with a shaft (7) and with a head (8), wherein the shaft (7) is force-lockingly connected to the friction ring (11) and the head (8) in the arrangement on the wheel web (2) of a track wheel (1) forms an axial stop against the wheel web (2) with respect to the axis of rotation (A).

11. A friction ring element (10) according to claim 1, wherein the linking elements (12, 13) are formed of strand material.

12. A friction ring element (10) according to claim 1, wherein the linking elements (12, 13) are formed of steel or aluminium.

13. A friction ring element (10) according to claim 1, wherein the friction ring (11) and/or the linking elements (12,13) are cut out from or cut off from a solid material by means of a laser beam cutting process, a water jet cutting process or a thermal separation process.

14. A friction ring set (200) for arranging on the wheel web (2) of a track wheel (1) for a rail vehicle in order to form a track wheel brake (100), comprising at least the following components: at least one friction ring element (10) according to claim 1; sliding blocks (20) for torque-transmitting fixing of the friction ring element (10) in the arrangement on the wheel web (2) of a track wheel (1) in the direction of rotation (U) with respect to the axis of rotation (A) of the track wheel (1); connecting elements (16) for force-locking connection of the friction ring element (10) to the wheel web (2) of a track wheel (1), wherein in the arrangement on the wheel web (2) of a track wheel (1) at least some of the linking elements (12, 13) are clamped between the friction ring (11) and the wheel web (2) by means of the connecting elements (16).

15. A friction ring set (200) according to claim 14, wherein a plurality of connecting elements (13) are provided according to claim 7, and wherein the sliding blocks (20) form a number corresponding to the connecting elements (13) and in the arrangement on the wheel web (2) of a track wheel (1) are arranged correspondingly, and the sliding blocks (20) abut with a clearance on the stop walls (19) of the respectively associated connecting element (13) and are movable radially relative to each other with reference to the axis of rotation (A) of the track wheel (1) and fix the friction ring element (10) in the direction of rotation (U) in a torque transmitting manner.

16. A friction ring set (200) according to claim 15, wherein the sliding blocks (20) can be arranged in a bolt-like manner in a recess (28) each in the wheel web (2).

17. A friction ring set (200) according to claim 14, wherein the friction ring set (200) comprises two friction ring elements (10) for a pairing arrangement on both sides of the wheel web (2) of a track wheel (1).

18. A friction ring set (200) according to claim 17, wherein at least one of the sliding blocks (20) is configured for torque-transmitting fixing in the direction of rotation (U) of both friction ring elements (10) and in the arrangement on the wheel web (2) of a track wheel (1) extends through a recess (28).

19. A friction ring set (200) according to claim 18, wherein the at least one sliding block (20) in the arrangement on the wheel web (2) of a track wheel (1) is axial with reference to the axis of rotation (A) of the track wheel (1) and/or is secured against rotation around its axial extent by means of the associated connecting elements (13).

20. A track wheel brake (100) with a track wheel (1), having a wheel hub (3) and a wheel rim (4) with a tread surface (5), wherein a wheel web (2) extends between the wheel hub (3) and the wheel rim (4), and wherein a friction ring set (200) according to claim 14 is arranged, which is fastened on the wheel web (2) on the track wheel (1) by means of the connecting elements (16).

21. A track wheel brake (100) according to claim 20, wherein at least one of the connecting elements (16) comprises a draw bolt (22) and a locknut (29).

22. A track wheel brake (100) according to claim 21, with a friction ring set (200) according to claim 17, wherein the at least one connecting element (16) fixes both friction ring elements (10) to the wheel web (2).

23. A track wheel brake (100) according to claim 21, wherein the at least one connecting element (16) extends through a through hole (30) in the wheel web (2), and the through hole (30) has a larger cross-section than the cross-section of the section of the connecting element (16) arranged in the region of the through hole (30).

Description

PREFERRED EMBODIMENT OF THE INVENTION

[0020] Further measures improving the invention are shown in more detail below together with the description of preferred embodiments of the invention with reference to the figures.

[0021] FIG. 1 shows a perspective view of a friction ring,

[0022] FIG. 2 shows a perspective view of a connecting element,

[0023] FIG. 3 shows a perspective view of a cooling element,

[0024] FIG. 4 is a perspective view of a friction ring element as a raw component on the connection element side,

[0025] FIG. 5 shows a perspective view of a friction ring element as a raw part on the frictional surface side,

[0026] FIG. 6 shows a pin for a positive rotation lock of a connecting element,

[0027] FIG. 7 shows a plan view of a detailed section of a connecting element which is pinned, arranged on a friction ring,

[0028] FIG. 8 shows a sectional view of a machine finished friction ring element,

[0029] FIG. 9 shows a perspective view a finished friction ring element of the connection element side,

[0030] FIG. 10 shows a perspective view of a sliding block with stop surfaces,

[0031] FIG. 11 shows a sectional view of a friction ring set cut at a connecting element,

[0032] FIG. 12 shows a sectional view of a friction ring set cut at a connecting element,

[0033] FIG. 13 shows a perspective view of a track wheel brake.

[0034] FIG. 1 shows a friction ring 11 in a perspective view, in which case the side for the linking elements (see FIG. 2 and FIG. 3) can be seen, into which the openings 14 are introduced for the linking elements (not shown here). Furthermore, a plurality of fastening bores 9 are provided, by means of which the friction ring 11 can be connected to a wheel web (not shown here) of a track wheel. The friction ring 11 has an axis of rotation A. The openings 14 and the fastening bores 9 are arranged in this example rotationally symmetrical to the axis of rotation A.

[0035] In FIG. 2, by way of example, a connecting element 13 is shown, which can be pressed into the respective largest openings 14 as shown in FIG. 1 between each of the radial hole triples. Here, the connecting element 13 is configured bolt-like and has a shaft 7 for pressing into an opening 14 and a head 8 for the function of the connecting element 13. The shown connecting element 13 is still shown as a raw component here, in which the recess (see FIG. 7 and FIG. 9) is not yet introduced. Basically, this raw component can therefore also be used as a pure cooling element (see FIG. 9).

[0036] FIG. 3 shows a similarly constructed cooling element 12 with a shaft 7 and a head 8. The shaft 7 is in this case configured smaller than in the connecting element 13 according to FIG. 2 and can be pressed into the respectively smaller opening 14, as shown in FIG. 1

[0037] FIG. 4 shows a friction ring element 10 in a perspective view, with the side of the linking elements 12, 13 of the friction ring 11 being looked at here. Here, the linking elements 12 and 13 are pressed into the respective openings 14, which are now concealed (see FIG. 1). The fastening bores 9 remain free. The recess in the connecting element 13 is still not introduced (see FIG. 7 and FIG. 9).

[0038] FIG. 5 shows the same friction ring element 10 as in FIG. 4, with the friction surface 15 of the friction ring 11 being looked at here. From this representation, it is apparent that only the fastening bores 9 are through-holes and the openings 14 in this embodiment (see FIG. 1) are configured as blind holes.

[0039] In FIG. 6, a simple pin 17 is shown, which can be inserted for a positive rotation lock of a linking element (see FIG. 7).

[0040] FIG. 7 now shows a detailed view of a friction ring element 10 in plan view, wherein an exemplary connecting element 13 is shown. To the left and to the right of the connecting element 13, a plurality of cooling elements 12 and two fastening bores 9 are shown in a cut view. The connecting element 13 is pressed into a concealed opening 14 (see FIG. 1) and a recess 18, in this example after the aforementioned pressing, was introduced into the connecting element 13. In this example, also after the aforementioned pressing, a hole for a pin 17 is introduced to secure the connecting element 13 positively against rotation. The stop walls 19 of the recess 18 are aligned parallel to a radius R (see FIG. 9).

[0041] FIG. 8 shows a section through a friction ring element 10, which is machined after the aforementioned steps of FIGS. 1 to 7. The original shape, as still present in FIG. 5, is indicated by the dot-dashed finishing lines 21. The section shown here is guided through two cooling elements 12, so that their cut shaft 7 and head 8 as well as the openings 14, into which the cooling elements 12 are respectively pressed, can be seen. Furthermore, the fastening bore 9 can be seen, wherein here a sunken bore, here for an external hex, follows from the friction surface side. In the background, two linking elements 12 and 13 can also be seen, which have also been squared and/or ground, like the friction surface 15, so that all linking elements 12, 13 are configured planar in a common plane.

[0042] FIG. 9 shows a perspective view of a friction ring element 10 which is configured ready for mounting on a track wheel. Here, in particular, the connecting elements 13 with the recesses 18 and the corresponding positive locking elements 17 are to be observed. The stop walls 19 are configured parallel to the radius R to the axis of rotation A shown here by way of example. Here it can further be seen that not each of the large linking elements has to be configured as a connecting element 13, but can rather also be configured as a cooling element 12. The connecting elements 13 together with a sliding block (as shown for example in FIG. 10) now allow a relative radial movement to the track wheel, i.e. along the radius R. At the same time, however, they allow a force or torque transmission in the direction of rotation U relative to the axis of rotation A.

[0043] FIG. 10 shows a sliding block 20 with stop surfaces 23 to be seen here, which are plane-parallel with paired stop surfaces which are concealed here. The stop surfaces 23 are configured corresponding to the stop walls 19 of the recess 18 of a connecting element 13, as shown for example in FIG. 9.

[0044] FIG. 11 shows a section through a friction ring set 200 with a paired embodiment of friction ring elements 10 on the left and right of a wheel web 2. In this sectional view, a sliding block 20 and two corresponding connecting elements 13, the stop walls 19 of which can be seen, are shown. The sliding block 20 is hereby introduced through a recess 28 in the wheel web 2. The sliding block 20 extends through this recess 28, so that the stop surfaces 23 (see FIG. 10) are brought into force engagement with the stop walls 19 of the respective connecting elements 13. By means of the cooling elements 12, which can be seen here in the background, but also by means of the connecting elements 13, a ventilation gap 26 is generated respectively between the friction ring 11 and the wheel web 2. The friction surfaces 15, which are configured to act with a friction force by means of a brake pad (not shown), are each directed axially outward, i.e. away from the wheel web 2.

[0045] FIG. 12 shows a similar section through a friction ring set 200 as shown in FIG. 11, wherein in this case the section is guided through the fastening bores 9, so that here an exemplary connecting element 16 formed from a draw bolt 22 and a locknut 29 can be seen. Here it can further be seen that the cross-section of the draw bolt 22 is significantly smaller than the cross-section of the through hole 30 in the wheel web 2, so that via the draw bolt 22 no radial positioning and preferably also no positioning in the direction of rotation is made. Rather, it is indicated here by the centre line of the draw bolt 22 and the centre line of the through hole 30 non-overlapping with the former, that the draw bolt 22 is not or need not be centred to the through hole 30. In this section, further cooling elements 12 can be seen, which are pressed into the friction ring 11. Further, reference is made to the description of FIG. 11.

[0046] FIG. 13 shows a track wheel brake 100, which comprises a track wheel 1 and two friction ring elements 10 of a friction ring set 200. The friction ring elements 10 comprise a friction ring 11 and a plurality of linking elements 12, 13. Here only the first (on the flange side) friction ring element 10 can be seen. The second (on the tread surface side) friction ring element 10 is concealed in this illustration by the wheel web 2, but is held by the common connecting means 16 (see. FIG. 12). The track wheel 1 in this case has a wheel rim 4, which forms a tread surface 5 and a flange 6, by means of which the track wheel 1 is configured to roll on a rail. The wheel hub 3 in the centre of the track wheel 1 is configured for connecting the track wheel 1 to an axle or shaft (not shown). The axis of rotation A of the track wheel 1 is aligned concentrically with the friction ring elements 10. The wheel hub 3 is connected via a wheel web 2 with the wheel rim 4. In this wheel web 2, the connecting elements 16 and the sliding blocks 20 (concealed in this representation, see. FIG. 11) are introduced, and the linking elements 12, 13 are supported in the axial direction relative to the axis of rotation A. The cooling elements 12 form a spacer element between the friction ring 11 and the wheel web 2. The connecting elements 13 have a recess which is aligned parallel to the radius R. This alignment is secured by means of a positive locking element 17 with the friction ring 11 against relative distortion As a result, the friction ring element 10 can unhinderedly expand radially as a result of a thermal entry, i.e. it can perform a radial relative movement to the track wheel 1.

[0047] The figures and the associated description also show, in addition to exemplary embodiments, a preferred sequence of the steps of a manufacturing method.

[0048] With the track wheel brake or the friction ring elements shown here, a cost-effective production and a high degree of freedom in the selection of materials is achieved.

LIST OF REFERENCE NUMBERS

[0049] 100 track wheel brake [0050] 200 friction ring set [0051] 1 track wheel [0052] 2 wheel web [0053] 3 wheel hub [0054] 4 wheel rim [0055] 5 tread surface [0056] 6 flange [0057] 7 shaft [0058] 8 head [0059] 9 fastening bore in the friction ring [0060] 10 friction ring element [0061] 11 friction ring [0062] 12 linking element, cooling element [0063] 13 linking element, connecting element [0064] 14 opening in the friction ring [0065] 15 friction surface of the friction ring element [0066] 16 connecting element [0067] 17 positive-locking element or pin [0068] 18 recess in the connecting element [0069] 19 stop walls of the recess [0070] 20 sliding block [0071] 21 finishing lines of the friction ring element [0072] 22 draw bolt [0073] 23 stop surfaces of the sliding block [0074] 26 ventilation gap [0075] 28 recess in the wheel web [0076] 29 locknut [0077] 30 through hole in the wheel web [0078] A rotation axis [0079] R radius [0080] U direction of rotation