Improved couplings for industrial applications and rail vehicles

Abstract

The invention relates to a coupling (10) comprising at least one claw member (12, 14) and an intermediate member (20). The intermediate member (20) comprises a damping member (24) designed to receive the at least one claw member (12, 14) and comprising an elastic damping element (22). According to the invention, the at least one damping member (24) is received in an end region (19) of a tube (21) of the intermediate member (20), and the damping element (22) is radially surrounded outwardly by the end region (19) in the circumferential direction. The invention also relates to a bogie (65) for a rail vehicle (60), comprising the coupling (10) described above. The invention also relates to an industrial application (50) having the coupling (10) according to the invention. The invention also relates to a computer program product (70) designed therefor.

Description

Technical Field

[0001] The present invention relates to a coupling having improved safety features and suitable for industrial applications and rail vehicles. The invention also relates to a corresponding industrial application and a corresponding bogie for a rail vehicle. The invention also relates to a computer program product for simulating the operating behavior of the coupling. Background Art

[0002] DE 10 2004 009 249 A1 already discloses an articulated shaft in which the two facing shaft ends of the shaft to be connected are coupled to a tube via a claw coupling for co-rotation, wherein one tube can be pushed into the other. The respective tubes have a coupling plate with axially protruding claws that interact with the claws of the designated shaft end via elastic buffer elements to form the respective claw coupling. Protruding from the respective coupling plate is a tube piece that can be pushed one inside the other and has a smaller outer diameter than the coupling plate and the associated claws. The claws of the shaft end and the tube, as well as the buffer element, are positioned axially spaced apart from the hollow cylindrical tube piece.

[0003] DE 10 201 20 07 822 A1 discloses an articulated shaft in which the two facing shaft ends of the shaft to be connected are connected to an inserted tube via a claw coupling. The shaft end and the corresponding axial end regions of the tube have axially protruding claws that form the corresponding claw couplings, with an elastic buffer element positioned between these claws. The outer side of the tube, the outer side of the corresponding claw, and the outer side of the corresponding buffer element are arranged around a common radius. The claws of the shaft end, the claws of the tube, and the buffer element are positioned axially spaced apart from the hollow cylindrical region of the tube.

[0004] EP 3 088 757 A1 already discloses a claw coupling in which claws projecting axially from the respective shafts to be connected are coupled in a torque-transmitting manner via elastic buffer elements.

[0005] From DE 10 2008 017 679 A1 it is known to mesh an inner part with a radial outer part, which inner part can be coupled to a shaft via radial inner spline teeth, wherein an elastic element is arranged in the tooth intermediate space between the outer teeth of the inner part and the inner teeth of the outer part. Summary of the Invention

[0006] The demands placed on couplings are becoming increasingly stringent in terms of torque transmission, compensation capacity, and reliability. In particular, good emergency operating characteristics are sought. Furthermore, simple and economical production is required. The present invention aims to provide a coupling that offers improvements in at least one of these aspects.

[0007] The objects of the present invention are achieved by a shaft coupling. Preferred configurations are defined in the dependent claims and the following description, each of which may represent an aspect of the invention individually or in combination. If one feature is combined with another, this is merely to simplify the description of the invention and does not in any way mean that the feature cannot be a further development of the invention without the other feature.

[0008] One aspect of the present invention relates to a shaft coupling comprising an intermediate member and at least one claw member, which may have a plurality of axially protruding claws, through which torque can be transmitted to or from the intermediate member. At least one damping member is housed in the intermediate member, and an elastic damping element can be housed in the damping member. During intended operation of the coupling, the elastic damping element contacts the claws and absorbs circumferential forces relative to the main axis of the coupling. According to the present invention, in addition to the at least one damping member, the intermediate member also includes a tubular member. The tubular member is, in particular, substantially hollow cylindrical and configured to transmit torque directed through the at least one damping member. According to the present invention, the at least one damping member is housed in an end region of the tubular member, in particular a hollow cylindrical region. In this case, the elastic damping element of the at least one damping member is substantially surrounded by the tubular member. That is, when viewed radially, the damping member and its damping element, inserted into the end region of the tubular member, are covered by the tubular material over an entire 360° circumference. The damping component, in particular at least one damping element, can preferably be inserted at least partially, and in particular, largely, preferably completely, into the cavity defined by the tubular component in the end region, preferably with a clearance fit or press fit. Consequently, the elastic damping element of the damping component is positioned radially inwardly of the tubular component wall relative to the main axis of rotation of the coupling. The elastic damping element is thus substantially enclosed during installation. In the event of failure of the elastic damping element, such as if it breaks off from the damping component, ejection of the damping element is prevented. Consequently, fragments of the elastic damping element formed in the event of a fault are retained, while still providing a reduced damping effect for emergency operation of the coupling initiated due to the fault. Consequently, the coupling according to the present invention improves emergency operation characteristics even in unexpected operating conditions, thereby preventing further damage. Furthermore, the intermediate component maintains a secure engagement with the claw member, thereby preventing ejection of the intermediate component. This improves operational reliability, for example, in industrial applications or rail vehicle bogies, while also preventing ejection of the intermediate component in unexpected operating conditions.

[0009] In particular, the claws of the claw member are received in the end region of the tubular component and are circumferentially surrounded radially outward by the end region over at least a portion of their axial extent, preferably over their entire axial extent. The claws of the claw member can also be inserted into the interior space defined by the tubular component in the end region, preferably using a clearance fit or a press fit. In this way, as a fracture protection device, the tubular component can retain a tubular claw that has broken off due to component failure radially inwardly, and prevent the broken claw from being ejected due to centrifugal forces.

[0010] Preferably, the portion of the damping component that is separate from the damping element is made of a more brittle material than the tube, in particular gray cast iron. The tube can be made of a more ductile material, such as aluminum or steel, than the portion of the damping component that is separate from the damping element. The tube can be easily deformed and provide additional rotational resilience, while the damping component provides a substantially non-compliant tangential stop for the elastic damping element, enabling elastic abutment of the tangential stop formed by the brittle portion of the damping component with the associated claw of the claw component within a defined range of rotational angles, via the elastic damping element pressed therebetween. The elastic damping element is preferably secured to the remainder of the damping component, in particular, secured in a substantially co-rotatable manner. Alternatively, the elastic damping element can be inserted into the remainder of the damping component, for example, in a non-secured and relatively rotatable manner, wherein in this case the elastic damping elements are preferably integrally connected to each other via a common ring. If the elastic damping element is fastened (e.g., bonded) to the rest of the buffer element, the ring can be omitted, and the individual damping elements can be formed separately, spaced apart from one another. If, in the event of an overload, a portion of the brittle portion of the buffer component (particularly the tangential stop and / or the elastic damping element) (particularly brittle at low temperatures) breaks, the ductile tube can retain the broken portion. Since, in extreme cases, the tube will plastically deform rather than break, fracture of the tube can be avoided.

[0011] In one embodiment of the coupling to be protected, the buffer component, in particular the portion of the buffer component that is distinct from the damping element, has a profile that is essentially C-shaped or J-shaped when viewed in a longitudinal section along the main rotation axis. In addition to the end regions of the pipe, the elastic damping element can also be surrounded by the rest of the buffer component in the circumferential direction on the radial outside. The C-shaped profile allows the elastic damping element to be surrounded on three sides and prevents fragments of the damping element from being thrown or falling. The C-shaped profile adds rigidity to the buffer component. The C-shaped profile can be structurally extended axially in a simple manner, that is, deepened axially. In this way, a damping element with an increased axial dimension can be received in the intermediate component while maintaining the axial dimension of the coupling. The C-shaped profile for the buffer component is easy to produce. In addition, a buffer component of this type is compact and easy to produce independently of the other components of the coupling. Therefore, the manufacture of the coupling to be protected is more flexible and therefore more cost-effective. Alternatively, the buffer component can also have a roughly J-shaped profile when viewed in a longitudinal section. In the case of a J-shaped profile, one surrounding wall of the damping component is axially shorter than the other surrounding wall. Like this, the material in the radially inner region of the damping component can be saved, which in turn leads to weight saving.

[0012] In one embodiment of the coupling claimed for protection, the pipe part belonging to the intermediate part can be made of aluminum or an aluminum alloy. Compared with steel, the use of aluminum or an aluminum alloy allows the pipe part to be formed with an increased wall thickness while reducing the weight or at least keeping the weight unchanged. In addition, aluminum or an aluminum alloy has increased toughness. This in turn leads to an increase in the torsional stiffness of the pipe part. The increased wall thickness also leads to increased tolerances when considered as absolute values, which in turn makes it possible to manufacture the pipe part in a simple manner. Overall, a load-appropriate material can thus be selected for the coupling. Alternatively or additionally, the at least one buffer component can be made of a cast material, such as gray cast iron. Cast materials provide increased compressive strength, wear resistance and cost-effectiveness. In this way, the principle of load-appropriate material selection is further implemented.

[0013] In another embodiment of the claimed coupling, a buffer element and a claw element are arranged at each of the two end regions of the pipe. This allows the intermediate element to be mounted stably on both sides. This ensures that, in the event of failure of one or more elastic damping elements, a coupling arrangement with sufficient compensation capacity is formed at the opposite end regions. In particular, this prevents the intermediate element from deflecting to the point of releasing from the coupling in the event of a failure of the elastic damping elements. Consequently, the claimed coupling is robust and reliable.

[0014] Furthermore, the at least one buffer component can be connected to the pipe fitting via an adhesive connection. In this case, the adhesive connection can be formed on a circumferential outer surface of the buffer component, which outer surface essentially bears against the inner wall of the pipe fitting in the installed state. The larger the axial dimension of the at least one buffer component, the larger the bonding surface that can be formed with the pipe fitting and therefore the greater the load-bearing capacity. The adhesive connection allows a clearance fit to be formed between the buffer component and the pipe fitting. In this case, the clearance fit can be produced with increased tolerances since the adhesive gap predetermined in this way is anyway filled with adhesive in the installed state. Furthermore, neither the buffer component nor the pipe fitting requires extensively reworked smooth surfaces in the area of ​​the adhesive connection. Instead, during production, a rough surface that can provide an increased bonding action due to its roughness can be maintained in the area of ​​the adhesive connection. Consequently, the coupling claimed can be produced cost-effectively.

[0015] Furthermore, the coupling joint can be formed by at least one buffer component and an associated claw component. The coupling joint allows compensation for offsets between the intermediate piece and the corresponding claw component. The offset can be in the form of an axial offset, an angular offset, or a combination thereof. For this purpose, the claws, the buffer components, and / or the elastic damping elements are formed with corresponding gaps that provide a sufficient amount of space for the corresponding offset. In an embodiment in which buffer components of the type described are provided on both sides of the intermediate piece, into which the claw components engage, a double-joint coupling is thus achieved. Due to the two joint planes, i.e. the coupling joints, the compensation required for the offset is distributed between the two claw components. In each case, both coupling joints automatically deflect only a minimum amount. As a result, the wear at the coupling due to the offset is only slightly increased. The coupling thus provided with protection offers an extended service life and reliability.

[0016] Furthermore, at least one of the elastic damping elements arranged in the buffer component can be produced by additive manufacturing. Elastomers with good damping properties can be produced with sufficient precision by additive manufacturing and are easily adaptable in terms of structure. The elastic damping elements produced by additive manufacturing can also be provided with sensors. The sensors can be formed on the outside of the elastic damping element and / or inside it. The sensors can in each case be in the form of temperature sensors, pressure sensors or wear sensors. In this way, space-saving, functionally enhanced integration is achieved. Alternatively or additionally, at least one of the elastic damping elements can be made of an electrically insulating material. In this way, electrical insulation can be easily produced between the claw component and the intermediate piece.

[0017] In another embodiment of the claimed coupling, at least one of the elastic damping elements can be designed to be individually installable and removable. For example, the elastic damping element can be inserted into the buffer component with a force fit. To this end, the corresponding elastic damping element can be formed into a substantially H-shaped or cross-shaped shape. Thus, the elastic damping elements can be replaced in a targeted manner according to their wear state. This reduces maintenance costs, particularly the need for replacement parts of the claimed coupling.

[0018] The coupling claimed for protection may include a collar on at least one of the buffer components, which serves as an axial stop. In particular, the collar is made of an electrically insulating material (e.g., plastic) and serves to interrupt the flow of creepage current between the claw component and the buffer component. The collar essentially forms an area with an increased outer diameter that cannot be accommodated in the pipe. When the buffer component is installed in the pipe, its axial position is limited by the collar. An adhesive connection can be formed between the end face of the pipe and the collar, and the buffer component is additionally supported to prevent rotation. The collar may be circumferential or segmented. The collar can be produced by lathing and can therefore be precisely aligned. The pipe and buffer component can thus be precisely aligned with each other in a simple manner. This avoids misalignment of the buffer component, which can lead to increased wear and offset between the buffer component and the corresponding coupling component. The circumferential collar forms a circumferential gap with the pipe, in which an adhesive connection can be formed, providing additional fixation to prevent the buffer component from rotating. The segmented collar further reduces weight. Furthermore, in the case where the shaft in contact with the claw member is subjected to creepage current, the electrical transmission of the creepage current to the other claw member attached via the intermediate member can be interrupted. In this way, the coupling can be used even in an electrically loaded environment.

[0019] Furthermore, a cover can be arranged on the at least one buffer component, particularly one made of an electrically insulating material (e.g., plastic), to interrupt the flow of creepage current between the shaft received in the claw component and the buffer component. The cover prevents dust, liquids, or vapor from entering the interior of the intermediate component, particularly preventing liquids or vapor from damaging the adhesive connection between the at least one buffer component and the pipe component. This improves the service life of the intermediate component and, consequently, the coupling. This protection makes the use of adhesive connections in the intermediate component technically feasible and thus offers its technical advantages. Furthermore, the cover can protrude axially and thus serve as a stop for the shaft and / or claw component. This achieves noise decoupling between the intermediate component and the shaft or claw component, thereby reducing noise generation during operation. Furthermore, in the event of an installation where the shaft received in the claw component is subject to creepage current, the electrical transmission of the creepage current to the other claw component attached via the intermediate component can be interrupted, allowing the coupling to be used even in electrically loaded environments.

[0020] The basic object is also achieved by an industrial application according to the invention. The industrial application comprises a drive unit, by which the drive power is provided. The drive unit can be in the form of an electric motor, a combustion engine, a hydraulic motor, a turbine or a flywheel. The drive power is connected via a coupling to an output unit, which is a mechanical application and by which the function of the industrial application is defined. The industrial application can generally be in the form of a grinder, a rolling mill, a cement grinder, a sugar grinder, an extruder, a conveying device, a rock crusher, a roller crusher, a mixing unit, a mixing mill, a rotary kiln, a roller press, a roller press, a pump, a fan, a lifting device, a scrap press or a waste press. In this case, according to the invention, the coupling is designed according to one of the above-described embodiments.

[0021] The objectives described in the introduction are also achieved by a bogie for a rail vehicle, comprising a traction motor connected to the wheels in a torque-transmitting manner. Furthermore, a transmission can be arranged between the wheels and the traction motor. According to the present invention, the bogie comprises a coupling via which the traction motor is connected to the wheels. In this case, the coupling is designed according to one of the above-described embodiments.

[0022] The objectives outlined above can also be achieved by a computer program product according to the present invention, which is configured to simulate the operational behavior of a coupling used in industrial applications or rail vehicles. Operational behavior should be understood to include, for example, the deflection behavior or wear behavior of individual components. The computer program product can also simulate the kinematic and / or vibration characteristics of the coupling. Thus, the operational behavior of the coupling in an installed state in an industrial application or rail vehicle can be simulated. This can include both production and maintenance operations. Therefore, in the computer program product according to the present invention, the coupling is represented according to its physical behavior, and a data interface can be provided, via which a further simulation-oriented computer program product can transmit input values ​​to the computer program product according to the present invention. Similarly, the computer program product can also be provided with a data interface for transmitting output values ​​of the computer program product according to the present invention to yet another simulation-oriented computer program product. The computer program product can be in the form of a so-called digital twin. Such a digital twin is proposed, for example, in the published specification US 2017 / 286572 A1. The disclosure of US 2017 / 286572 A1 is incorporated herein by reference. The coupling, the simulation of which can be performed by the claimed computer program product, is designed according to one of the embodiments outlined above. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be discussed in more detail below based on various embodiments shown in the accompanying drawings. Where the same reference numerals in different drawings have the same technical meaning, the drawings should be viewed as complementary. Features of the various embodiments may also be combined with one another. Furthermore, the embodiments shown in the accompanying drawings may be combined with the features described above. In the accompanying drawings, specifically:

[0024] Figure 1 A first embodiment of the claimed coupling is schematically shown in cross-section;

[0025] Figure 2 shows the structure of an embodiment of the claimed bogie;

[0026] Figure 3 The structure of an embodiment of the claimed industrial application is shown. DETAILED DESCRIPTION

[0027] exist Figure 1, a cross-sectional view of a first embodiment of the claimed coupling 10 is shown. The coupling 10 comprises a first coupling part 12 and a second coupling part 14 connected to an intermediate piece 20. Each of the claw parts 12 and 14 has a plurality of claws 16 that engage in the intermediate piece 20. Rotation of the first claw part 12 about the main axis of rotation 15 of the coupling 10 is transmitted as torque 25 to the intermediate piece 20 and from the intermediate piece 20 to the second coupling part 14. The torque 25 is provided by a first power shaft 51 (not shown in greater detail) and removed via a second power shaft 53 (not shown in greater detail). The intermediate piece 20 comprises a pipe 21 having a damping element 24 provided in each of its end regions 19. At least one of the damping elements 24 is made of a cast material, in particular gray cast iron. The pipe 21 is made of aluminum or an aluminum alloy and has an outer diameter that defines the maximum outer diameter 34 of the coupling 10.

[0028] The buffer components 24 in the end region 19 of the tube 21 have a substantially C-shaped profile 26 when viewed in longitudinal section. In each case, the outer surface 23 of the buffer components 24 bears against the inner wall 31 of the tube 21 and is connected to the tube 21 via a bonded connection 30. In each case, the tube 21 and the buffer components 24 are designed so that a bonding gap 37 is formed between them in the non-bonded state. In the region of the bonding gap 37, the outer surface 23 of the buffer components 24 and the tube 21 have an increased roughness, thereby increasing the load-bearing capacity of the bonding gap 37. The bonding gap length 32 between the respective buffer components 24 and the tube 21 is defined by the dimension of the respective buffer component 24 in the axial direction 27. The greater the bonding gap length 32, the greater the mechanical load-bearing capacity of the bonded connection 30. Furthermore, each buffer component 24 has a collar 28 that forms a stop and limits the position of the buffer component 24 in the tube 21 in the axial direction 27. The collar 28 ensures the spatial alignment of the damping components 24. A plurality of elastic damping elements 22 are arranged in each damping component 24. These elastic damping elements 22 exert tangential forces 17 on the claws 16 during the intended operation of the coupling 10, or the claws 16 exert tangential forces 17 thereon. The elastic damping elements 22 are fastened to the respective damping component 24 via retaining projections 33 in a force-fitting and / or form-fitting manner. The tangential forces 17 induce a pressure load in the respective damping component 24. At least one of the elastic damping elements 22 is produced by additive manufacturing and is equipped with a sensor 39 (not shown in greater detail). In this case, the sensor 39 is located inside the elastic damping element 22.

[0029] The elastic damping element 22 is surrounded on three sides by corresponding buffer components 24. This allows each elastic damping element 22 to be individually installed and removed. In each case, a claw component is located on the side of the corresponding buffer component 24 facing away from the pipe 21 (i.e., its open side). This ensures that the elastic damping element 22 is essentially closed. In the event of failure of the elastic damping element 22, it breaks into fragments, which, due to their closed nature, still allow emergency operation of the coupling 10. The dimensions of the buffer components 24, claws 16, and elastic damping element 24 result in a circumferential gap 18 between the first or second jaw component 12, 14 and the intermediate piece 20. This results in joint planes 42 formed at the first and second jaw components 12, 14 relative to the intermediate piece 20. Each joint plane 42 corresponds to a joint 43 and allows compensation for angular offsets 36 caused by tilting motion 35. Furthermore, axial offsets 44 and / or radial offsets 56 can also be compensated between the intermediate piece 20 and the first or second jaw component 12, 14. Thus, the coupling 10 constitutes a double joint coupling 40. The coupling 10 is also represented in a computer program product 70 configured to simulate the operating behavior of the coupling 10 in, for example, an industrial application 50 or a rail vehicle 60.

[0030] Figure 2 The schematic structure of an embodiment of the claimed bogie 65 for use in a rail vehicle 60 is shown. The rail vehicle 60 comprises a carriage body 63 to which the bogie 65 is fastened. The bogie 65 comprises a traction motor 62 which is connected via a coupling 10 to a transmission 64 for driving wheels 61 rolling on rails 66. For this purpose, the torque 25 of the coupling 10 is supplied to the coupling 10 via a first power shaft 51 and the torque 25 is removed via a second power shaft 53. The coupling 10 is designed according to one of the above-described embodiments, for example according to Figure 1 The coupling 10 is represented in this case by a computer program product 70 by means of which the operating behavior of the coupling 10 during operation of the bogie 65 and thus of the rail vehicle 60 can be simulated.

[0031] Figure 3The structure of an embodiment of the claimed industrial application 50 is schematically shown. The industrial application 50 comprises a drive motor 52, which can be in the form of an electric motor, a combustion engine, a hydraulic motor, a turbine or a flywheel. The drive unit 52 provides a torque 25, which is supplied to the coupling 10 via a first power shaft 51. The torque 25 is transmitted from the coupling 10 via a second power shaft 53 to an output unit 54. The output unit 54 is a mechanical application, by which the functionality of the industrial application 50 is defined. The industrial application 50 as a whole can be in the form of a grinder, a rolling mill, a cement grinder, a sugar grinder, an extruder, a conveyor, a rock crusher, a roller crusher, a mixing unit, a mixing mill, a rotary kiln, a roller press, a roller press, a pump, a fan, a lifting device, a scrap press or a scrap press. In this case, the coupling 10 is designed according to one of the above-described embodiments, for example according to Figure 1 Double joint coupling 40.

Claims

1. A coupling (10) comprising at least one claw member (12, 14) and an intermediate member (20), the intermediate member having a buffer member (24), the buffer member having an elastic damping element (22) and being adapted to receive the at least one claw member (12, 14), wherein the at least one buffer member (24) is received in an end region (19) of a tube (21) of the intermediate member (20), and the damping element (22) is surrounded radially on the outside in the circumferential direction by the end region (19), characterized in that The portion of the buffer component (24) different from the damping element (22) is made of a material that is more brittle than the tube (21), and the tube (21) is made of aluminum or an aluminum alloy.

2. The coupling (10) according to claim 1, characterized in that The claw parts (12, 14) have axially projecting claws (16), wherein the claws (16) are received in the end region (19) and are surrounded radially outwardly by the end region (19) in the circumferential direction over at least a portion of the axial extent of the claws (16).

3. The coupling (10) according to claim 2, characterized in that The claw (16) is surrounded radially on the outside in the circumferential direction by the end region (19) over the entire axial extent of the claw (16).

4. The coupling (10) according to any one of claims 1 to 3, characterized in that: The portion of the buffer component (24) that is different from the damping element (22) is made of gray cast iron.

5. The coupling (10) according to any one of claims 1 to 3, characterized in that The at least one buffer component (24) has a C-shaped or J-shaped profile (26) in longitudinal section.

6. The coupling (10) according to any one of claims 1 to 3, characterized in that A buffer component (24) and claw components (12, 14) are arranged at each of the two end regions (19) of the tube (21).

7. The coupling (10) according to any one of claims 1 to 3, characterized in that The at least one buffer component (24) is connected to the pipe (21) via an adhesive connection (30).

8. The coupling (10) according to any one of claims 1 to 3, characterized in that A coupling joint (43) is formed by the at least one damping element (24) and the associated claw elements (12, 14).

9. The coupling (10) according to any one of claims 1 to 3, characterized in that At least one of the elastic damping elements (22) arranged in the buffer component (24) is produced by additive manufacturing.

10. The coupling (10) according to claim 9, characterized in that The elastic damping element (22) is individually installable and removable.

11. The coupling (10) according to any one of claims 1 to 3, characterized in that A circumferential collar (28) is formed on the at least one buffer component (24) as an axial stop, wherein the collar (28) is made of an electrically insulating material for interrupting the flow of creepage currents between the claw components (12, 14) and the buffer component (24).

12. The coupling (10) according to any one of claims 1 to 3, characterized in that A cover (38) is arranged on the at least one buffer component (24), wherein the cover (38) is made of an electrically insulating material for interrupting the flow of creepage current between the shaft received in the claw components (12, 14) and the buffer component (24).

13. An industrial application device (50) comprising a drive unit (52) and an output unit (54) connected to a coupling (10) in a torque-transmitting manner, characterized in that The coupling (10) is designed as a coupling (10) according to any one of claims 1 to 12.

14. A bogie (65) for a rail vehicle (60), comprising a traction motor (62) and a wheel (61), the traction motor (62) and the wheel (61) being connected to each other in a torque-transmitting manner via a coupling (10), characterized in that The coupling (10) is designed as a coupling (10) according to any one of claims 1 to 12.

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