COUPLING DEVICE

Abstract

A coupling device for a vehicle drive is provided, in particular of a rail vehicle drive, comprising at least one first coupling, which has at least one first thread-reinforced joint device, wherein the first thread-reinforced joint device has at least one thread pack, which is embedded into at least one elastic body; the at least one first coupling device has at least one supporting device, which is connected to the first thread-reinforced joint device; the at least one supporting device supports the first thread-reinforced joint device in the radial direction.

Claims

1. A coupling device for a vehicle drive, comprising: at least one first coupling, which has at least one first thread-reinforced joint device, wherein the first thread-reinforced joint device has at least one thread packet, which is embedded into at least one elastic body, wherein the at least one first coupling has at least one supporting device, which is connected to the first thread-reinforced joint device, wherein the at least one supporting device supports the first thread-reinforced joint device in a radial direction.

2. The coupling device according to claim 1, wherein the coupling device further has: at least one second coupling, which has at least one second thread-reinforced joint device, wherein the second thread-reinforced joint device has at least one thread packet, which is embedded into at least one elastic body, and at least one intermediate piece, which connects the first coupling and the second coupling to one another.

3. The coupling device according to claim 2, wherein the at least one second coupling has at least one supporting device, which is connected to the second thread-reinforced joint device, wherein the at least one supporting device supports the second thread-reinforced joint device in a radial direction.

4. The coupling device according to claim 1, wherein the at least one supporting device is supported in an overhung manner.

5. The coupling device according to claim 1, wherein the at least one supporting device has several supporting elements, which extend in a radial direction and are connected to the thread-reinforced joint device.

6. The coupling device according to claim 1, wherein the at least one supporting device has at least one portion, which connects the supporting elements to one another and at least one selected from the group consisting of (i) extends radially outside the first or second thread-reinforced joint device and (ii) extends radially inside the first or second thread-reinforced joint device.

7. The coupling device according to claim 1, wherein the at least one supporting device supports the at least one thread packet of the first thread-reinforced joint devices or of the second thread-reinforced joint devices in a radial direction.

8. The coupling device according to claim 1, wherein the at least one intermediate piece is supported in an overhung manner.

9. The coupling device according to claim 1, wherein at least one selected from the group consisting of (i) the first coupling is connected to a first flange, which has a hub-shaped portion, and/or and (ii) the second coupling is connected to a second flange, which is formed with a connecting portion to take up several connecting elements.

10. The coupling device according to claim 1, wherein the first flange and the second flange each have several first and second flange arms, which are connected via the first and the second thread-reinforced joint device to arms of the intermediate piece, wherein supporting elements are arranged in a circumferential direction between the flange arms of the first flange and the arms of the intermediate piece or the flange arms of the second flange and the arms of the intermediate piece.

11. The coupling device according to claim 1, wherein at least one selected from the group consisting of the first thread-reinforced joint device and/or and the second thread-reinforced joint device are composed of several thread-reinforced coupling elements, which each have at least one elastic body and at least one thread packet.

12. The coupling device according to claim 11, wherein at least one selected from the group consisting of (i) a thread-reinforced coupling element connects a flange arm of the first flange, an arm of the intermediate piece and a supporting element to one another, and/or and (ii) wherein a thread-reinforced coupling element connects a flange arm of the second flange, an arm of the intermediate piece and a supporting element to one another.

13. A thread-reinforced coupling element, comprising: at least one thread packet, at least two bushes, wherein the at least one thread packet loops around the at least two of the bushes, and at least one deflection element, wherein the at least one thread packet, rests on the at least one deflection element.

14. The thread-reinforced coupling element according to claim 13, wherein the at least one deflection element is arranged between the at least two bushes.

15. The thread-reinforced coupling element according to claim 13, wherein the at least one deflection element is positioned such that the at least one thread packet extends in the area between the bushes with at least one kink or a curvature.

16. The thread-reinforced coupling element according to claim 13, wherein the thread-reinforced coupling element has several thread packets, wherein associated with each thread packet is at least one deflection element.

17. The thread-reinforced coupling element according to claim 16, wherein the deflection elements are connected to one another.

18. The thread-reinforced coupling element according to claim 13, wherein the at least one thread packet forms two strands in the area between at least two bushes, wherein at least one strand of the at least one thread packet rests on the at least one deflection element.

19. The thread-reinforced coupling element according to claim 18, wherein associated with the at least one thread packet are at least two deflection elements, wherein one strand of the at least one thread packet rests on one of the deflection elements.

20. A bogie for a rail vehicle, comprising: at least one wheelset, which has an axle, at least one motor, and at least one coupling device according to claim 1, wherein the coupling device couples the motor to the axle.

21. The bogie according to claim 20, wherein at least one selected from the group consisting of the motor and the at least one coupling device are arranged coaxially with the axle.

22. The bogie according to claim 20, wherein at least one selected from the group consisting of (i) the first flange of the coupling device is connected non-rotatably to the axle and (ii) the second flange of the coupling device is connected via the connecting portion to a motor output shaft of the motor.

23. A rail vehicle comprising at least one coupling device according to claim 1.

24. A rail vehicle comprising at least one bogie according claim 20.

Description

[0034] Exemplary embodiments are described below with reference to the enclosed figures. There are depicted:

[0035] FIG. 1 a perspective view of a coupling device according to an embodiment of the invention;

[0036] FIG. 2 a plan view of the coupling device according to FIG. 1;

[0037] FIG. 3 a lateral view of the coupling device according to FIGS. 1 and 2;

[0038] FIG. 4 a perspective view of the coupling device without supporting devices;

[0039] FIG. 5 another plan view of the coupling device;

[0040] FIG. 6 a sectional view along the section line VI-VI in FIG. 5;

[0041] FIGS. 7 to 12 various views of a thread-reinforced coupling element according to a first exemplary embodiment;

[0042] FIGS. 13 to 18 various views of a thread-reinforced coupling element according to a second exemplary embodiment;

[0043] FIGS. 19 and 20 views of the supporting devices of the coupling device according to FIGS. 1 to 6 with coupling elements mounted thereon;

[0044] FIG. 21 a plan view of a bogie of a rail vehicle with the coupling device according to FIGS. 1 to 6.

[0045] FIG. 1 shows a perspective view of a coupling device 10. The coupling device 10 comprises a flange 12 and a flange device 14. Arranged between the flange 12 and the flange device 14 are a first coupling 16, a second coupling 18 and an intermediate piece 20, which connects the first coupling 16 to the second coupling 18.

[0046] The (first) flange 12 has a hub-shaped portion 22 and three (first) flange arms 24, which extend radially outwards starting from the hub-shaped portion 22. The hub-shaped portion 22 extends in a tubular manner in the direction of the intermediate piece 20. The hub-shaped portion 22 has an opening 26, on the inner circumferential area of which a groove 28 is formed. The first flange 12 can be pressed with its hub-shaped portion 22 onto an axle (not shown) of a wheelset of a rail vehicle.

[0047] The flange device 14 has a cover 30 and a screwed portion 34 with which the flange device 14 can be connected to a motor, which is not shown.

[0048] The first coupling 16 has a supporting device 36 and several thread-reinforced coupling elements 38. The thread-reinforced coupling elements 38 form a thread-reinforced joint device FG1. The supporting device 36 has several radial supporting elements 40 and an annular portion 42. The supporting elements 40 extend radially inwards starting from the annular portion 42. The supporting elements 40 are connected to the thread-reinforced coupling elements 38.

[0049] Apart from their connection to the supporting elements 40, the thread-reinforced coupling elements 38 are also connected to the flange arms 24 of the flange 12 and the intermediate piece 20. The connection of the thread-reinforced coupling elements 38 to the intermediate piece 20 is indicated by the connection plates 44 and the connecting elements 46 associated with these connection plates 44. The connecting elements 46 can be screws or bolts.

[0050] The second coupling 18 comprises the thread-reinforced coupling elements 38 and a supporting device 48 with supporting elements 50 extending radially outwards. The thread-reinforced coupling elements 38 form a thread-reinforced joint device FG2.

[0051] The supporting elements 40 and 50 of the supporting devices 36 and 48 are connected via connecting elements 52 to the thread-reinforced coupling elements 38. The connecting elements 52 extend through the coupling elements 38. The supporting devices 36 and 48 each have supporting elements, which are offset to one another in an axial direction and between which the coupling elements 38 are arranged, wherein only the supporting elements 40 and 50 are shown in FIG. 1. The connecting elements 52 extend between these two supporting elements 40, 50 offset axially to one another and thereby through the coupling elements 38. Some of the supporting elements offset axially to one another can have an internal thread. If screws are provided as connecting elements 52, these can be screwed into the internal thread of the supporting elements to connect the supporting device 36, 48 to the coupling elements 38. The coupling elements 38 of the second coupling 18 are connected to the flange device 14, as shown by the connection plates 54 and connecting elements 56. The connecting elements 56 extend through the coupling elements 38 in the direction of the flange device 14.

[0052] The intermediate piece 20 has arms 58 which extend radially outwards. The intermediate piece 20 is connected via the arms 58 to the coupling elements 38 of the second coupling 18.

[0053] FIG. 2 shows a plan view of the coupling device 10. The coupling device 10 comprises the flange 12, the flange device 14 and the couplings 16 and 18, which are arranged in an axial direction between the flange 12 and the flange device 14 and are connected to one another via the intermediate piece 20.

[0054] The intermediate piece 20 has the arms 58 and 60 extending in a radial direction. The arms 58 serve to connect the intermediate piece 20 to the coupling elements of the second coupling 18, which are not shown in FIG. 2. The arms 60 connect the intermediate piece 20 to the thread-reinforced coupling elements of the first coupling 16, which are not shown in FIG. 2. The arms 58 and 60 of the intermediate piece 20 extend radially outwards starting from an annular or tubular portion 62.

[0055] The flange device 14 has the cover 30, within which the supporting device 48 and the thread-reinforced coupling elements 38 (see FIG. 1) extend. As well as the cover 30, the flange device 14 comprises a (second) flange 64 on which the connecting portion 34 is formed. The flange 64 has (second) flange arms 66. The flange 64 is connected, in particular screwed, to the cover 30 via the flange arms 66.

[0056] The connecting portion 34 comprises several connecting elements 68. The connecting elements 68 can be screws. The connecting elements 68 extend in an axial direction. The connecting elements 68 serve to connect the flange device 14 to a motor output shaft of a motor (not shown).

[0057] FIG. 3 shows a lateral view of the coupling device 10 looking onto the flange device 14 and the coupling 18. The flange device 14 has the flange 64 and the cover 30. The cover 30 is connected to the flange arms 66 of the flange 64. The flange arms 66 extend outwards in a radial direction from the connecting portion 34, on which the connecting elements 68 are recognisable. The flange device 14 or the flange 64 has an opening 70 through which an axle (not shown) can extend. The opening 70 is dimensioned such that the axle (not shown) cannot contact the flange 64 or the connecting portion 34. The flange 64 is connected via the flange arms 66 to the thread-reinforced coupling elements 38 of the thread-reinforced joint devices FG2 or the second coupling 18. The thread-reinforced coupling elements 38 are connected in their central area in a circumferential direction to the supporting elements 50 of the supporting device 48.

[0058] The supporting elements 50 extend outwards in a radial direction. The supporting device 48 and the coupling elements 38 are enclosed in a radial direction by the cover 30. The coupling elements 38 are connected to the intermediate piece 20 (see FIG. 2). This is indicated by the connection plates 72 and the connecting elements 74 associated with the connection plates 72. The cover 30 is connected to the radially outer end portions of the coupling arms 66. In particular, the flange arms 66 can be screwed to the cover 30.

[0059] FIG. 4 shows a perspective view of the coupling device 10, in which the supporting devices 36 and 48 and the cover 30 of the flange device 14 have been removed. The flange 12 has the flange arms 24, which extend starting from the hub-shaped portion 22. The hub-shaped portion 22 extends through the coupling elements 38 in the direction of the intermediate piece 20. The flange arms 24 are connected to the thread-reinforced coupling elements 38. In their central area the thread-reinforced coupling elements 38 have deflection elements (not shown), through which connecting elements 52 extend. The coupling elements 38 are connected via the connecting elements 46 to the arms 60 of the intermediate piece 20. The arms 58 of the intermediate piece 20 are connected to the thread-reinforced coupling elements 38 of the coupling 18 likewise via connecting elements 74. The coupling elements 38 of the coupling 18 likewise have deflection elements, which are not shown, in their central area. Extending through these deflection elements are the connecting elements 52, which connect the thread-reinforced coupling elements 38 to the supporting device 48 (see FIG. 1). The thread-reinforced coupling elements 38 are connected via the connecting elements 56 to the flange arms 66 of the flange 64 of the flange device 14. The connecting elements 46, 52, 56 and 74 can be screws. In particular, the connecting elements 46, 52, 56 and 74 can be screws with a hexagonal head.

[0060] The flange arms 66 have a recess 76 on which the cover 30 (see FIG. 1) can be supported. Connecting elements 78 via which the cover 30 can be attached to the flange arms 66 are recognisable in the recess 76.

[0061] FIG. 5 shows another plan view of the coupling device 10. In FIG. 5, the flange 12, the supporting device 36 of the coupling 16, the intermediate piece 20, the cover 30, the coupling 18 and the flange device 14 are shown. The intermediate piece 20 has the tubular portion 62 and the arms 58, 60. The arms 58 and 60 extend radially outwards from the tubular portion 62. The intermediate piece 20 is connected via the arms 60 to the first coupling 16 and via the arms 58 to the second coupling 18.

[0062] FIG. 6 shows a sectional view along the section line VI-VI in FIG. 5. FIG. 6 thus shows a sectional view of the coupling 16 and the supporting device 36. The hub-shaped portion of the flange 12 and the annular element 42 of the supporting device 36 are recognisable in FIG. 6. Arranged in a radial direction between the hub-shaped portion 22 of the flange 12 and the annular element 42 of the supporting device 36 are the thread-reinforced coupling elements 38. Extending radially externally around the supporting device 36 in the view according to FIG. 4 is the cover 30, which is not shown in portion. In the supporting device 36 shown in portion, several openings are recognisable through which screws extend to connect the two parts of the supporting device 36.

[0063] The thread-reinforced coupling elements 38 each have three thread packets 80a, 80b and 80c. Each of the thread packets 80a, 80b and 80c loops around two bushes 82 respectively. In the area between the two bushes 82, deflection elements 84 are provided on which the thread packets 80a, 80b and 80c can be supported. The deflection elements 84 force a kink or curvature onto the thread packets 80a, 80b and 80c. The coupling element 38 as a whole has a kinked or angled form due to this. The connecting elements 52 extend through the deflection elements 84 to connect the coupling elements 38 to the supporting device 36 or to the supporting elements 38.

[0064] FIG. 7 shows a perspective view of a thread-reinforced coupling element 38 according to a first exemplary embodiment. The thread-reinforced coupling element 38 has six bushes 82 and deflection elements 84. The deflection elements 84 are arranged in an area between the bushes 82. The deflection elements 84 are connected to one another via connecting elements 90, which are arranged on the axial ends of the deflection elements 84. The deflection elements 84 are formed in the form of bushes. Recognisable on the bushes 82 are collar elements 92, which hold thread packets, not shown in FIG. 7, on the bushes 82.

[0065] FIG. 8 shows a plan view of the thread-reinforced coupling element 38 according to FIG. 7. The bushes 82, the collar elements 92, the deflection elements 84 and the plate-shaped connecting elements 90 are embedded partially into the elastic body 86. Recognisable in the elastic body 86 are recesses or openings 94, which are formed between the strands of a thread packet 80, not shown in FIG. 9, in the elastic body 86.

[0066] FIG. 9 shows a sectional view along the section line IX-IX in FIG. 8. In FIG. 9, the thread packet 80 is shown, which is depicted in section at four points based on the progression of the section line IX-IX. The thread packet 80 loops around the bushes 82. Provided on the bushes 82 are the collar elements 92, which extend in a radial direction starting from the tubular portion of the bushes 82. The collar elements 92 can be formed integrally with the bushes 82. The bushes 92 hold the thread packet 80 in its predetermined axial position on the bush 82. The bushes 82 with the collar elements 92 formed thereon have a bobbin shape.

[0067] In the area between the two bushes 82, the deflection element 84 is shown. The deflection element 84 is not looped around or is only scarcely looped around by the thread packet 80. The thread packet 80 runs along the deflection element 84 and rests in an area with one of its strands on the outer circumferential area of the deflection element 84. Furthermore, the recesses or openings 94 are recognisable in the elastic body 86.

[0068] FIG. 10 shows a perspective view of the basic body of the thread-reinforced coupling element 38. The three thread packets 80a, 80b, 80c of the thread-reinforced coupling element 38 are recognisable in FIG. 10. Each of the thread packets 80a, 80b, 80c loops around two bushes. Each of the thread packets 80a, 80b, 80c forms a unit with two bushes 82, which are looped around by the thread packet 80a, 80b, 80c. Provided between the bushes 82 are the deflection elements 84, which can deflect and support the thread packets 80a, 80b, 80c. The deflection elements 84 are connected to one another via plate-shaped connecting elements 90. A deflection element 84 brings the two strands 88a and 88b formed by the thread packet between the bushes 82 close to one another, so that the strand 88b assumes a more strongly kinked progression than the strand 88a. The strand 88a is less is kinked compared with the kink in strand 88b. Each of the thread packets 80a, 80b, 80c thus runs kinked between the bushes 82.

[0069] FIG. 11 shows a lateral view of the thread-reinforced coupling element 38. In the view according to FIG. 11, the elastic body 86, the connection plates 90 partially embedded therein and the ends of the bushes 82 are recognisable.

[0070] FIG. 12 shows a sectional view along the section line XII-XII in FIG. 11. The thread packets 80a, 80b, 80c each loop around precisely two bushes. In the area between the bushes, the thread packets 80a, 80b, 80c form two strands 88a and 88b. The deflection elements 84 deflect these strands 88a and 88b in the area between the bushes. The strands 88a and 88b are brought closer to one another by this deflection in the area of the deflection elements 84. The strand 88b rests on an area of the outer circumferential surface of a deflection element 84. The strand 88a rests in this area, i.e. in the area of the deflection element 84, on the strand 88b. The thread packet 80a, 80b, 80c thus assumes an angled progression. The deflection elements 84 divide the thread packets 80a, 80b, 80c into two limbs, each of which has a bush 82 and which run at an angle to one another. The bushes 82, the thread packets 80a, 80b, 80c and deflection elements 84 are embedded into the elastic body 86.

[0071] FIGS. 13 to 18 show a thread-reinforced coupling element 38 according to a second exemplary embodiment. The substantial difference from the first exemplary embodiment according to FIGS. 7 to 12 lies in the fact that two deflection elements 84 are associated with each thread packet 80a, 80b, 80c. Each strand 88a, 88b of a thread packet 80a, 80b, 80c is deflected in the area between the bushes 82 by its own deflection element 84. The strands 88a, 88b of the thread packets 80a, 80b, 80c thus no longer lie adjacent to one another in the area of the deflection element 84 but are separated from one another by a deflection element 84. Each of the strands 88a, 88b has a kink set by a deflection element 84. The deflection elements 84 are connected to one another via the plate-shaped connecting elements 90. Compared with the exemplary embodiment described above, the deflection elements 84 have a reduced diameter.

[0072] FIG. 19 shows a front view of a supporting device 36 of the first coupling 18 (see FIG. 1) with thread-reinforced coupling elements 38 according to the first exemplary embodiment shown in FIGS. 7 to 12 fitted thereto. The supporting device 36 has the annular portion 42 and supporting elements 40, which extend radially inwards starting from the annular portion 42. The supporting elements 40 are connected to the deflection elements 84 (see FIGS. 7 to 12) via screws 52. With its supporting elements 40 the supporting device 36 supports a central area of the thread-reinforced coupling elements 38, in which area the deflection elements 84 are arranged. The thread-reinforced coupling elements 38 can be screwed to the first flange 12 via the screws 56. The screws 56 are led through the bushes 82 (see FIGS. 7 to 12) to this end. Screws 46 can be led through the bushes 82 in the same way to connect the thread-reinforced coupling elements 38 to the intermediate piece 20 (see FIG. 1).

[0073] FIG. 20 shows a front view of the supporting device 48 of the second coupling 18. The supporting device 48 has an annular portion 96 and supporting elements 50, which extend radially outwards starting from the annular portion 96. The annular portion 96 extends radially within the thread-reinforced coupling elements 38. The thread-reinforced coupling elements 38 are connected via the screws 52 to the supporting elements 50. The screws 52 are led to this end through the deflection elements 84 (see FIGS. 7 to 12). The thread-reinforced coupling elements 38 can be screwed via the screws 56 to the second flange 64 (see FIG. 1). The screws 74 connect the thread-reinforced coupling elements 38 to the intermediate piece 20 (see FIG. 1). The supporting elements 50 extending radially outwards hold the deflection elements 84 and thus the central area of the thread-reinforced coupling elements 38 in a predetermined radial position. The unit formed from supporting device 48 and the coupling elements 38 thereby retains its polygonal structure.

[0074] Depending on their loading (tensile or compression), the thread-reinforced coupling elements 38 can be pulled radially inwards or pressed radially outwards without the supporting device 36, 48. The supporting device 36, 48 supports the coupling elements 38 in a radial direction. The supporting device 36, 48 holds the thread-reinforced coupling elements 38 in their predetermined radial position. This applies in particular to the area of the deflection elements 84, which are connected to the supporting elements 40, 50. In particular, the supporting elements 40, 50 prevent the central area with the deflection elements 84 of the thread-reinforced coupling elements 38 between the bushes 82 from being displaced in the direction of the centre line M. The supporting elements 40, 50 accordingly ensure that the coupling or the unit formed from the supporting device 36, 48 and the thread-reinforced coupling elements 38 retains its polygonal structure even in operation of the coupling. Large deflection angles can be compensated for thereby and the radial installation space optimally utilised, as a polygon with as many edges as possible can optimally fill an installation space in the form of a circle or hollow cylinder.

[0075] FIG. 21 shows a plan view of a bogie 1000. The bogie 1000 has two wheelsets is 1002 and 1004. Each wheelset 1002, 1004 has two wheels 1006, 1008, which are connected to one another by an axle 1010. The coupling device 10 is arranged coaxially with the axle 1010. The coupling device 10 connects the wheelset 1002, 1004 to the motor 1012. The coupling 10 can be coupled to the axle 1010 and to a motor output shaft (not shown) of the motor 1012. The coupling 10 and the motor 1012 can be arranged coaxially with the axle 1010. The first flange 12 (see FIG. 1) of the coupling device 10 can be connected non-rotatably to the axle 1010. The flange 12 can be pressed onto the axle 1010, for example. The second flange 64 can be connected to a motor output shaft (not shown) of the motor 1012. The connecting elements 68 of the flange 64 can be connected to the motor output shaft to this end. The axle 1010 extends through the coupling device 10 and also through the motor 1012. The motor 1012 can be a traction motor, which can drive the wheelset 1002, 1004 without transmission.

[0076] As is recognisable in particular in FIG. 21, the coupling 10 requires very little installation space in an axial direction and can nevertheless take up a large deflection angle in order to be able to compensate for relative movements between the motor 1012 and the wheelset 1002, 1004.

[0077] The supporting devices described above support the thread-reinforced joint devices in a radial direction. The supporting device can hold the thread-reinforced joint devices in their predetermined radial position. The supporting devices prevent the thread-reinforced joint devices from moving radially inwards or radially outwards on account of the reaction forces arising in operation of the coupling or of the thread-reinforced joint device. The supporting elements of the supporting device accordingly ensure that the coupling retains its polygonal structure even in operation. Large deflection angles can be compensated for thereby and the radial installation space optimally utilised, as a polygon with as many edges as possible can optimally fill an installation space in the form of a circle or hollow cylinder.