WO2014037370A1

WO2014037370A1 - Torsionally elastic clutch device for transmitting a torque, and method for assembling the clutch device

Info

Publication number: WO2014037370A1
Application number: PCT/EP2013/068235
Authority: WO
Inventors: Gunnar GÖDECKE
Original assignee: Hackforth Gmbh
Priority date: 2012-09-04
Filing date: 2013-09-04
Publication date: 2014-03-13
Also published as: DE202012013097U1; DE102012017435A1

Abstract

Frequently, the aim of torsionally elastic clutches is to allow the assembly of the clutches in a powertrain as simply or as flexibly as possible. At the same time, the clutches should be designed such that an angular or axial displacement can be adjusted in order to compensate for tolerances or changes in position. In some cases, an assembly is not possible due to the structural peculiarities of the clutches or a displacement cannot be sufficiently adjusted. The invention proposes designing a torsionally elastic clutch device 1 so as to be pluggable at an interface between a clutch hub 10 and a clutch intermediate flange 30 and providing corresponding clutch components 20, 40, in particular a retaining element 40 with one or more shearing bodies 20. The clutch hub 10 and the clutch intermediate flange 30 each have openings 11, 31 in which the shearing bodies 20 can be arranged. In this manner, the assembly can be simplified, the range of use of the clutch device can be expanded, and an axial displacement can also be better adjusted.

Description

Torsionally flexible Kupplunasvorrichtuna to Drehmomentübertraauna and procedures for mounting the Kupplunasvorrichtuna

The invention relates to a torsionally flexible coupling device for transmitting torque, with a clutch hub, a Kupplungszwischenflansch and a flange. Furthermore, the invention relates to individual coupling components of the coupling device. In the field of drive technology, it is often necessary to provide a coupling between a (diesel) engine and a generator in the drive train, by means of which an offset and / or vibrations can be compensated. For example, torsionally flexible couplings are known, which have a vulcanized rubber element between a hub on the one hand and a flywheel connection on the other hand, and which are used for example as a generator clutch for free-standing generator sets. Such couplings can compensate within certain limits axial, angular and / or radial offset. Also, axial vibrations, which are caused for example during operation of a motor, are damped by the rubber element. At least one of the interfaces of the coupling to other machine elements, in particular an interface in the form of a flywheel connection, can also be designed as a membrane of a preferably high-strength spring material in order to further improve the damping properties. Whether elastic or rigid couplings are used, the couplings have to be mounted, which, depending on the adjacent machine elements and the space available, results in narrow boundary conditions can. Since the couplings often consist of several serially connected coupling elements, such boundary conditions can be taken into account, for example, by the assembly sequence. Sometimes, however, it is also necessary to arrange elastic elements of such elastic couplings in a variant which better meets a specific installation situation. However, developing or maintaining such variants is expensive. Some areas of application have still not been accessible with some types of coupling due to mounting problems.

Task is to provide a coupling which is simple and suitable for a wide range of applications. It is also an object to develop a previously known, a rubber element having a torsionally flexible coupling so that it can compensate for an offset. Last but not least, it is an object to make a torsionally flexible coupling so that it is easy to install, even with difficult assembly tasks. At least one of these objects is achieved by a clutch hub according to claim 1, a shear body according to claim 3, a coupling intermediate flange according to claim 7, a retaining element according to claim 8 and a torsionally flexible coupling device according to claim 10. Advantageous developments of the invention are explained in the respective subclaims.

According to the invention, it is proposed to design the torsionally flexible coupling device and its coupling components in such a way that the torsionally flexible coupling device can be plugged in, in particular for the purpose of easier assembly and a wider range of use, and if possible also an axial offset can be compensated. By pluggable design can be done in a simple manner, an assembly of the coupling device for driving connection between a motor and a generator in so-called bell installations. In bell internals, in which the coupling device is later inaccessible in the generator bell, the coupling device is connected to the flywheel of the motor on the one hand and with the generator shaft on the other. According to the invention, the plug connection can be threaded when the generator and motor are pushed together become. In this phase, the coupling device is no longer accessible for mounting purposes, since it is already completely inside the generator bell. In the case of the coupling device according to the invention, a coupling flange designed as a membrane can in many cases be dispensed with if an axial offset can already be sufficiently compensated by the plug-in design, especially by shear bodies which are cylindrical along the axial direction.

One of the over the prior art to be modified coupling components is the clutch hub. A clutch hub for a torsionally flexible coupling device for torque transmission is designed with a first interface for coupling to a machine element, in particular to a shaft, and a second interface for coupling to a flange of the coupling device. According to the invention it is proposed that the coupling hub can be plugged in the axial direction by having at the second interface a recess in which a shear body for transmitting torque between the flange member and the clutch hub can be arranged.

As an axial direction is preferably a direction parallel to a central longitudinal axis of the coupling device to understand, be it parallel to one or the other direction of extension of the central longitudinal axis. If it is e.g. about an at least partially rotationally symmetrical coupling device, the axial direction is parallel to the axis of rotation.

As a clutch hub is preferably a coupling element to understand, which is provided for connection to a shaft. However, the clutch hub does not necessarily have to be a component of a shaft-hub connection, but the term "clutch hub" can also be understood to mean flanges of a torsionally flexible coupling device which are designed to be connected to another flange of a component unlike the coupling device. According to a preferred embodiment, the recess is arranged on a radially outwardly facing lateral surface of the clutch hub. hereby a simple construction of the clutch hub can be ensured, and at the same time, the shear body can be arranged at a favorable distance from an axis of rotation and thereby also transmit a larger torque than if they were arranged close to the axis of rotation.

Preferably, the recess is provided on a disc-shaped part of the clutch hub, the disc-shaped part projecting radially relative to a hub main body, in particular in the region of twice the diameter of the hub main body. An additional coupling component used in a coupling device according to the invention is the shear body. According to the invention, it is proposed that a shearing body is provided, which is designed to transmit shearing forces arranged in a recess between a coupling hub and a coupling intermediate flange of the coupling device. By a shear body, which can be arranged at the interface between the clutch hub and a Kupplungszwischenflansch, the assembly of the coupling device in a particularly simple manner possible. The clutch hub may e.g. already connected to a drive or output shaft, and only then inserted into the intermediate coupling flange.

According to a preferred embodiment, the shearing body is formed with a lateral surface aligned parallel to a central longitudinal axis of the shearing body. As a result, the function of the shear body is ensured regardless of the position of the clutch hub with respect to the intermediate coupling flange. The clutch hub can shift along the shear body and the desired torsional stiffness of the coupling device is still ensured.

The lateral surface is preferably a cylindrical outer surface. Particularly preferably, the Au ßenmantelfläche is interrupted by a groove in which an O-ring is arranged, which the Au ßenmantelfläche radially outward Shen slightly surmounted and is designed to be in damping contact on a Inner circumferential surface of a coupling flange abut. The O-ring is intended to prevent the connector (which may be subject to play), for example in the drive train between engine and generator, from rattling when the engine is idling. It can also be provided on a shear body several O-rings. Only at higher torque, the O-ring is pressed elastically and the shear body carries.

According to a preferred embodiment, the shear body is formed like a plug and consists of a fiber composite material. A plug-like trained shear body may have in the direction of its central longitudinal axis an extension which is relatively small with respect to an extension orthogonal thereto in the radial direction. As a result, large shear forces can be absorbed. The fiber composite material may also prevent metallic rattling and adhesive seizures in the metal / metal contact within the coupling device. According to one embodiment, the shear body is pultruded or consists of pre-wound, preferably high-strength fabric and thermosetting resin. In this case, the fiber arrangement can be aligned to a predominant part at least approximately parallel to a central longitudinal axis of the shear body. In this way, a good resistance, in particular compressive strength and bending strength can be set.

Suitable thermosetting resin is, for example, epoxide, polyester or vinyl ester. With epoxy, for example, temperature resistances in the range of 130-180 ° Celsius can be achieved. In addition to the predominant orientation, the fiber arrangement can also be oriented at least approximately parallel to a central longitudinal axis and also to a small extent at least approximately in a circumferential direction of the shearing body. Preferably, the proportion of oriented in the circumferential direction of fibers is very small, in particular less than 10 percent, more preferably less than 5 percent. As a result, a good interlaminar shear strength which is effective in the coupling device can be ensured, and a shear body which is inherently stable can be provided even with particularly high shear forces acting on the shear body. Depending on the torque to be transmitted, the shearing body can also be provided several times, in particular in a number of three, four, five, six or even more pieces. Preferably, six shearing bodies are arranged symmetrically with respect to a central longitudinal axis of the coupling device.

According to one variant, the shearing body can also be compression-molded and optionally uncut, and then preferably consists of phenol. Regardless of the type of material or the manufacturing process, the shearing bodies can be obtained from round bars of the material, for example by dividing round bars of a diameter of 6 to 600, preferably 10 to 100 mm and a length of 1 to 1000 mm in the desired length. In this case, the shear bodies by compression molding or pultrusion a density in the range of, for example, 1, 1 to 1, 35 kg / dm ^{3 are} awarded, which can also serve to not change a predetermined by a rubber element torsional stiffness of the coupling device. Material, density, fiber content and arrangement can be chosen so that a lifetime of more than 15,000 hours is ensured. Temperature resistances in the range of -45 ° Celsius to 90 ° Celsius are feasible, even up to 180 ° Celsius in the case of epoxy resin.

Another of the prior art to be modified coupling components is the intermediate coupling flange. A Kupplungszwischenflansch for a torsionally flexible coupling device is provided to establish a connection between a clutch hub and a flange and has a first interface for connection to the clutch hub and a second interface for connection to the flange. According to the invention, it is proposed to design the intermediate coupling flange in such a way that it is designed to store a coupling hub in the axial direction by having a recess at the first interface, in which a shear body can be arranged for transmitting a torque between the flange element and the coupling hub , Preferably, the first interface is formed by an inner circumferential surface of the intermediate coupling flange. A pluggable interface on the intermediate coupling flange provides the advantage of a good Accessibility, so a simple coupling to the clutch hub, as explained above.

More preferably, the intermediate coupling flange is disc-shaped, more preferably also annular, ie as a disc with an inner diameter which differs only slightly from the outer diameter with respect to the absolute diameter, e.g. in the range of 15 to 35 percent. As a result, a lighter yet very robust and suitable for high torques and speeds Kupplungszwischenflansch be provided. The entire rotating mass of the coupling device can be kept low.

In the context of the present invention, it has been found that one or more shearing bodies can be arranged on a separate retaining element in order to ensure even easier assembly. According to the invention a retaining element for a torsionally flexible coupling device for torque transmission is proposed, which has a first interface for connection to a Kupplungszwischenflansch and a serially arranged in an axial direction thereto second interface for connection to a flange of the coupling device and for positioning of a shear body on the first interface is formed. The retaining element is preferably no function of torque transmission. In this way, it can be made filigree, so with thin wall thickness and therefore also easy.

Preferably, the holding member is disc-shaped, particularly preferably also annular, so as a disc having an inner diameter which differs only slightly from the outer diameter with respect to the absolute diameter, for example in the range of 10 to 30 percent. As a result, a lighter yet very robust and suitable for high torques and speeds Kupplungszwischenflansch be provided. The entire rotating mass of the coupling device can be kept low. According to a preferred embodiment, at least one shearing body is arranged on the holding element such that an outer surface area of the shearing body projects beyond the holding element in a radial direction inwards and outwards. In other words, the holding element has a diameter which is greater than the width of a circumferential strip of material of the disc-like and optionally also annular holding element. As a result, the retaining element can be provided without complicated structural changes between the intermediate coupling flange and the flange element. In this case, the holding element may be alone on the shear body or in conjunction with the coupling device. The retaining element can thus be supported solely by recesses in the intermediate flange element and the clutch hub, ie indirectly via the shear body or bodies. Another fixation is not required, which ensures a quick and easy installation. Rather, by dimensioning the retaining element such that in the radial direction an overlap with the Zwischenflanschelement and the clutch hub is given, a backup of the retaining element and thus the or the shear body between the Zwischenflanschelement and the clutch hub can be ensured. According to a variant, the retaining element is screwed to the side facing the flange of the intermediate flange with this and also centered thereon. In this variant, the Zwischenflanschelement and the holding element can be provided together with the shear bodies as a pre-assembled machine element, and the assembly in the field can be done very quickly or easily. Preferably, the shear body with axial and radial play are fixed to the support member, which facilitates the threading of the connector. Under torque, the shear bodies position themselves between the positive flanks of the clutch hub and intermediate flange element.

The above object is, as mentioned, already solved by each of the coupling components described above, and in principle it is also achieved by a torsionally flexible coupling device for torque transmission according to claim 10, comprising a clutch hub, a Kupplungszwischenflansch and a flange member, preferably each as described above are formed, wherein is proposed according to the invention that the torsionally elastic coupling device can be plugged in the axial direction. The axial direction is preferably parallel to a central longitudinal axis of the coupling device.

In a possible variant of the invention, the intermediate coupling flange and the flange element are designed as a unitary flange, i. formed in one piece, in which case the torque is transmitted between the clutch hub and one-piece flange via the interposed shear body.

According to a preferred embodiment, the clutch hub and the intermediate coupling flange together form a cavity in which a shear body according to the invention can be arranged, on which the clutch hub can be inserted at an interface between the clutch hub and the intermediate coupling flange. As a result, a pluggable interface can be provided without complex design measures.

According to a preferred embodiment, the clutch hub and the intermediate coupling flange together have a plurality of recesses, in each of which a shear body according to the invention is arranged, wherein the recesses in pairs each form a circular cavity and the shear bodies are each formed with a cylindrical outer circumferential surface. Due to the symmetrical design, a precise alignment of the clutch hub with respect to the intermediate coupling flange or the shear body with respect to the clutch hub is not required, and the assembly is simple and quick to carry out and influence of the alignment of these coupling components to a rotational stiffness can be excluded.

According to the invention, the intermediate coupling flange are connected to the flange element, and the coupling hub is inserted in the axial direction in the intermediate coupling flange.

According to one embodiment, the holding element is arranged between the intermediate coupling flange and the flange element. As a result, the assembly of the clutch hub can be made very simple, since no further coupling components must be provided in the region of the hub. moreover builds the coupling device in this integration of the holding element at the interface between the intermediate coupling flange and the flange small since the holding element can be provided without additional space in the axial direction within a defined by the flange element cavity.

According to one embodiment, at least one shearing body is centered and fixed on the holding element. Then, the holding element is centered on the intermediate coupling flange and fixed. Then the intermediate coupling flange is centered and fixed to the flange element. Then, the clutch hub is inserted into the intermediate coupling flange and thereby guided by the shear body, in particular an O-ring of the shearing body. In this order, it is ensured that no assembly step more than two coupling components aligned with each other and must be brought to bear, whereby the assembly is carried out with two hands by a single person.

In the following drawing figures, the invention will be described in more detail with reference to embodiments. In this case, not all reference numerals in each of the drawing figures are repeated, but identical or at least functionally identical elements are always provided with the same reference numerals, unless otherwise stated.

Show it:

Figures 1 a, b is a perspective line drawing of a

Coupling device according to an embodiment of the invention with a view to a hub of the coupling device in an assembled state and in an axially offset hub state;

FIGS. 2a, b in the perspective view of FIG. 1a,

1 b each show a representation of the coupling device for the two states; 3a, b show a perspective line drawing and a partial section of components of the coupling device in an assembled state;

Figure 4 in a perspective view a

Representation of the coupling device with respect to a flange of the coupling device in a state with axially offset hub;

Figure 5 is a group drawing of the main components of the coupling device in an exploded view;

Figure 6 is a partial view of the coupling device without flange in the perspective view of Figure 4;

Figures 7a, b in a perspective view a

Partial view of a flange in connection with a holding element of the coupling device;

Figure 8 is a sketch detail detail of a single shear body of the coupling device in a ready-to-use arrangement between a hub and a coupling intermediate flange of the coupling device;

Figure 9 in the perspective view of Figure 6 is a partial view of the coupling device without a Kupplungszwischenflansch the coupling device.

Figures 10a, b respectively in a side view of a single shear body of the coupling device in a state mounted on a holding element; Figure 1 1 in a perspective view a

Partial view of a holding element of the coupling device, on which six shear body are arranged by means of connecting elements;

FIG. 12 shows a perspective detail view of a single shear body arranged on a holding element of the coupling device, for the purpose of facilitating understanding without showing a connecting means;

Figure 13 in a perspective view a

Partial view of a holding element of the coupling device; and

Figure 14 in a perspective view a

Representation of a coupling according to the prior art.

In Fig. 1 a, a coupling device 1 with a coupling hub 10 and a flange 50 is shown. The coupling device 1 is rotationally symmetrical and extends in a radial direction (y-direction) further than in an axial direction (x-direction) along a central longitudinal axis M of the coupling device 1. The flange element 50 has a flexible element 51, in particular a rubber element 51, by means of which a torsionally elastic property of the coupling device can be ensured and adjusted by specific design of the element 51. Between the two coupling elements 10, 50 a Zwischenzwischenflansch 30 is arranged, which forms an interface with the clutch hub 10, on which shear body 10 are arranged. For this purpose, the clutch hub 10 and the intermediate coupling flange 30 each have in a plane perpendicular to the x-direction semicircular recesses 1 1, which together form a pair of circular cavity for each shear body 20. The clutch hub 10 can be inserted into the intermediate coupling flange 30 and the coupling between the clutch hub 10 and the intermediate coupling flange 30 can be ensured via the shear body 10, in particular by positive locking.

In Fig. 1 b, the clutch hub 10 is not inserted into the intermediate coupling flange 30. However, the shear bodies 20 are already mounted, which is realized by a barely visible retaining washer 40 which is disposed between the intermediate coupling flange 30 and the flange member 50 and the shear body 40 fixed on the flange 50 facing side of the Kupplungszwischenflanschs 30.

In FIGS. 2 a and 2 b it is shown that the flexible element 51 can be provided as a rubber element between two parts of the flange element 50, in particular vulcanized on. In this rubber member 51, a desired torsional elasticity can be adjusted. The shear bodies 20 are primarily used for torque transmission between the clutch hub 10 and the intermediate coupling flange 30. In FIGS. 3a and 3b, only the clutch hub 10, the intermediate coupling flange 30 and the retaining element 40 with shear bodies 20 fixed thereto are shown. The holding element 40 has the shape of an annular disc (flat ring) and is screwed to the intermediate coupling flange 30. In this case, first the retaining element 40 can be screwed to the intermediate coupling flange 30 in order then to fix the shearing bodies 20 to the retaining element 40, or alternatively the retaining element 40 can already be fixed to the intermediate coupling flange 30 with shear bodies 20 fixed thereto. The screw has proven to be advantageous, but is replaceable by other types of connections. The shear bodies 20 are cylindrical, piston-shaped and arranged in each case in a cylindrical cavity formed by respective recesses 11, 31 on the clutch hub 10 and the intermediate coupling flange 30. The shearing bodies 20 each have an internally threaded bore, by means of which they can be fixed to the holding element 40, as described in more detail in connection with FIGS. 10 a, b, c and 13. FIG. 4 shows the coupling device 1 with a view of the flange element 50, which in this variant is at least partially formed as a membrane 53a, in particular of a high-strength, preferably metallic spring material. This membrane 53a is thin-walled and therefore also designed to compensate for an axial offset. Basically, advantages such as easier assembly or extended mounting options can be achieved by the coupling device 1.

The connector according to the invention allows some axial displacement, e.g. for compensation of installation length tolerances. The axial reaction force during operation depends on the friction of the shear body 20 from the torque. It is possible, e.g. a certain compensation of axial thermal expansions in the drive train in the (almost torque-free) warm-up phase. The axial offset that can be compensated by the shear bodies 20 may be e.g. in the range of 0.5 to 5 mm, preferably 1 to 3 mm, particularly preferably 1 to 1, 5 mm.

The membrane 53a is optional. If no diaphragm is required for axial compensation, a completely rigid flange element 50 suffices.

In Fig. 5 is shown more clearly how the recesses 1 1, 31 may be carried out to form a suitable for the shear body 20 cavity. The clutch hub 10 has a first interface 12 and a second interface 13, wherein the second interface 13 has a disk-like part 13 a, on which recesses 1 1 are introduced for the shear body 20. The recesses 1 1 are provided on an outer circumferential surface of the disc-like member 13 a and radially spaced significantly from a hub main body 10 a. The recesses 1 1, 31 can be easily introduced in each case in solid material of the clutch hub 10 and the intermediate coupling flange 30, for example by means of a milling cutter, which moves radially into the workpiece. Therefore, the clutch hub 10 does not necessarily need to be constructed differently than previously known hubs, so there is an option to make the clutch hub 10 from a larger batch of, for example, molded hubs, which can save costs. In the variant shown, six cylindrical, plug-like shear bodies 20 are provided corresponding to the number of cavities to be formed by the recesses 11, 31, which are each formed identically. The intermediate coupling flange 30 has a first interface 32 which points radially inward and is formed by an inner circumferential surface. The intermediate coupling flange 30 has a second interface, which points at least approximately in the x-direction and which is shown in FIG. 6 by the reference numeral 33. The intermediate coupling flange 30 has a centering 35, on which the holding element 40 can be centered with respect to the coupling intermediate flange 30.

The holding element 40 has a first interface 42 which points at least approximately opposite to the x-direction. The holding element 40 has a second interface which points at least approximately in the x-direction and which is shown in FIG. 6 by the reference numeral 33. The flange member 50 has a first interface 52 which is intended to be coupled to the second interface of the intermediate coupling flange 30. The flange element 50 has a second interface 53 which points at least approximately in the x direction and comprises the membrane 53a.

FIG. 6 shows the second interface 33 of the intermediate coupling flange 30. Further, a centering 34 is shown, namely two dowel pins, which are provided on the second interface 33. About the dowel pins 34 of the intermediate coupling flange 30 can be centered on the flange 50. The holding member 40 is also shown by the second interface 43 thereof. The shear bodies are fixed to the holding member 40 by screws, and for this purpose 40 guides 41 a are introduced in the holding element, in particular through hole, which are arranged symmetrically on a hole circle on the holding member 40. Further, in the holding member 40 mounting means 41 b, in particular through holes are provided.

The shear body 20 are preferably held on the support member 40 via the screws with axial and radial play, which facilitates the threading of the connector. Under torque, the shear body 20 position itself between the positive flanks of the Kupplungszwischenflansches 30 and the clutch hub 10. The material of the shear body 20 (eg fiber reinforced plastic) prevents metallic rattling and / or adhesive seizure, as they might occur in contact metal metal. In Fig. 7a, the holding member 40 is shown in a centered on the intermediate coupling flange 30 position, which is defined by the centering 44, in particular dowel pins, but without being already connected by screws with the intermediate coupling flange 30. In Fig. 7b, one of the dowel pins 44 is shown in detail. It is a plugged through the support member 40 bolts.

In Fig. 8 is shown schematically, in which way the shear body 20 can be loaded. Two curved arrows indicate that a torque is applied between the flange element 50 and the clutch hub 10, which torque can be transmitted via the shear bodies 20, of which only one is shown by way of example. By the two arrows facing each other, the area of the contact surface between the shear body 20 and the clutch hub 10 and the Kupplungszwischenflansch 30 is highlighted in which predominantly a compressive force is exerted on the shear body. The outer cylindrical lateral surface of the shearing body 20 is therefore claimed, especially at opposite surface portions to pressure, which are close to the interface between the clutch hub 10 and the intermediate coupling flange 30. Compared to a through a center P of the shear body 20 and tangent to the outer surface of the clutch hub 10 extending tangent T, the main directions of force acting on the shear body 20 compressive force extend at an angle, so that within the shear body 20 shear forces occur. In the context of the invention, it has been found that these shearing forces can be absorbed well by the shearing body 20, in particular if it consists of a fiber composite material. In Fig. 9 it is shown that the shear body 20, the holding member 40 (flat ring) in the radial direction with respect to a central longitudinal axis M of the clutch hub 10 and the coupling device inwardly and surmounted to the outside and is arranged centrally with respect to the width of the circumferential flat ring strip. In this case, each shear body 20 is centered in a guide 41 a, in particular through hole on the holding member 40 and fixed. In mounting means 41 b screws or the like fastening means may be provided to fix the holding member 40 to the intermediate coupling flange.

In Fig. 10a, one of the shear body 20 is shown in a sectional view of the retaining disk 40. The shearing body 20 has a cylindrical outer circumferential surface 26, which is oriented rotationally symmetrical to a central longitudinal axis m of the shearing body 20. At the front side facing away from the holding disk 40, the shearing body 20 has a chamfer or a radius 22, which facilitates insertion of a coupling hub onto the shearing bodies. By the two arrows pointing towards each other, it is indicated that the shear body 20 is centered in the retaining washer 40 by a part of the shear body 20 is guided by the retaining washer 40 and aligns the shear body 20 on the retaining disk 40. Due to the rotational symmetry of the shearing body 20, this centering can be achieved e.g. be realized by a cylindrical extension, as shown in FIGS. 12 and 13. Via a connecting means S, the shear body 20 is fixed to the retaining plate 40. The cylindrical outer circumferential surface 26 is interrupted by a groove in which an O-ring 25 is arranged. As shown in FIG. 10b, the groove 21 is provided at least approximately in the middle of the cylindrical outer circumferential surface 26 with respect to its extension in the direction of the central longitudinal axis m.

In Fig. 1 1, the preassembled for a further assembly assembly consisting of the holding member 40 and the shear bodies 20 is shown.

FIG. 12 shows how a shear body 20 can be centered on the retaining element 40. The shearing body 20 is integrally formed with a projection or extension 24, in which a bore 23 for fixing the shearing body 20 is provided on the holding element 40. The bore 23 is preferably formed as a blind bore with an internal thread. In the holding member 40 is a corresponding to the projection 24 guide 41 a, in particular through hole intended. The projection 24 protrudes with respect to the main body of the shear body 20 by an amount which corresponds approximately to the thickness of the holding member 40.

In Fig. 13, a shear body 20 is shown from one side onto the lug 24. The rotationally symmetrical design of the shear body 20, in particular also of the projection 24 is clearly visible.

In Fig. 14, a prior art coupling 1 A is shown, which is formed by a hub 10A with a first interface 12 and a second interface 13 and by a membrane 30A and a flange 50A. This clutch 1 A is not pluggable. The hub 10A is rigidly connected to the diaphragm 30A. Axial misalignment can only be compensated by the spring material diaphragm 30A. The field of application and the mounting possibilities of this coupling are limited, e.g. it can not be used in so-called bell installations.

By the invention, the mounting possibility can be improved in particular by the shear body. The shear bodies can ensure the dual function of axial balancing and mating during assembly. At the same time can be provided by the fixation of the shear body on the retaining disk an easy-to-use coupling device, which is also very simple.

- List of Reference Signs -

REFERENCE SIGNS LIST 1 Coupling device 10 Coupling hub 10a Hub main body 1 1 recess

12 interface to a machine element unequal to the coupling device, in particular to a shaft

13 interface to a flange element such as e.g. a flywheel connection 13a radially outwardly facing lateral surface

13b disc-shaped part of the clutch hub

20 shear bodies

21 groove

22 chamfer 23 Drilling

24 approach

25 O-ring 26 lateral surface, in particular cylindrical outer circumferential surface

30 intermediate coupling flange

31 recess

32 first interface 33 second interface

34 Centering for the intermediate coupling flange with respect to the flange element

35 centering for the holding element with respect to the Kupplungszwischenflanschs 40 holding element

41 a guide for shear body, in particular through hole

41 b mounting means, in particular through hole

42 first interface

43 second interface 44 centering for the holding element with respect to the Kupplungszwischenflanschs

50 flange element

51 rubber element 52 first interface

53 second interface

53a diaphragm made of spring material

M center longitudinal axis of the coupling device m center longitudinal axis of a shear body of the coupling device

P center of a shear body

S connecting means, in particular screw

T Tangent through the center of a shear body and tangential to the outer surface of the clutch hub

1 A coupling according to the prior art

10A hub according to the prior art

30A membrane according to the prior art

50A as a diaphragm preferably made of high-strength spring material flywheel connection according to the prior art

- Claims -

Claims

patent claims

1. clutch hub (10) for a torsionally flexible coupling device (1) for transmitting torque,

with a first interface (12) for coupling to a machine element, in particular to a shaft, and a second interface (13) for coupling to a flange element (50) of the coupling device (1),

characterized in that the clutch hub (10) is pluggable in the axial direction by having at the second interface (13) has a recess (11) in which a shear body (20) for transmitting a torque between the flange member (50) and the clutch hub (10) can be arranged.

Second clutch hub (10) according to claim 1, characterized in that the recess (11) is arranged on a radially outwardly facing lateral surface of the clutch hub (10).

3. shear body (20) for a torsionally flexible coupling device (1) for torque transmission,

That is, it is configured to transmit shear forces disposed in a recess (11; 31) between a clutch hub (10) and a coupling intermediate flange (30) of the clutch device (1).

4. shearing body (20) according to claim 3, characterized in that it is formed with a parallel to a central longitudinal axis of the shearing body (20) aligned lateral surface.

5. shearing body (20) according to claim 3 or 4, characterized in that it is formed like a plug and consists of a fiber composite material.

6. shearing body (20) according to claim 5, characterized in that it is pultruded, or that it consists of pre-wound, kettstarkem fabric and thermosetting resin and the fiber assembly to a predominant part at least approximately parallel to a central longitudinal axis (m) of the shearing body (20 ) is aligned.

7. coupling intermediate flange (30) for a torsionally flexible coupling device (1) for transmitting torque,

with a first interface (32) for connection to a coupling hub (10) and a second interface (33) for connection to a flange element (50) of the coupling device (1),

characterized in that the Kupplungszwischenflansch (30) is adapted to a coupling hub (10) to store in the axial direction pluggable by having at the first interface (32) has a recess (31) in which a shear body (20) for transmitting a Torque between the flange (50) and the clutch hub (10) can be arranged.

8. retaining element (40) for a torsionally flexible coupling device (1) for transmitting torque,

characterized in that it comprises a first interface (42) for connection to a Kupplungszwischenflansch (30) and a serially arranged in an axial direction thereto second interface (43) for connection to a flange (50) of the coupling device (1) and for the positioning of a shear body (20) is formed on the first interface (42).

9. retaining element (40) according to claim 8 with a shear body (20) according to one of claims 3 to 6, characterized in that the shear body (20) is arranged on the holding element (40) such that a Outer shell surface of the shearing body (20) projects beyond the holding element (40) in a radial direction inwardly and outwardly.

10. Torsionally elastic coupling device (1) for torque transmission,

with a coupling hub (10), a coupling intermediate flange (30) and a flange element (50),

That is, the torsionally flexible coupling device (1) can be plugged in the axial direction at an interface between the coupling hub (10) and the intermediate coupling flange (30).

1 1. A torsionally flexible coupling device (1) according to claim 10, characterized in that the coupling hub (10) and the intermediate coupling flange (30) together form a cavity in which a shear body (20) according to any one of claims 3 to 6 can be arranged, on which the clutch hub (10) is pluggable.

12. A torsionally flexible coupling device (1) according to claim 10 or 1 1, characterized in that the coupling hub (10) and the intermediate coupling flange (30) together have a plurality of recesses (1 1, 31), in which in each case a shear body (20). is arranged according to one of claims 3 to 6, wherein the recesses (1 1; 31) in pairs each form a circular cavity and the shear body (20) are each formed with a cylindrical outer circumferential surface.

13. A torsionally flexible coupling device (1) according to any one of claims 10 to 12, characterized by a coupling hub (10) according to claim 1 or 2, a Kupplungszwischenflansch (30) according to claim 7, and a holding element (40) according to claim 8 or 9.

14. Use of a torsionally flexible coupling device (1) according to any one of claims 10 to 13 in a drive train between a motor and a generator.

15. Use according to claim 14, characterized in that the coupling device (1) is in the mounted state of the drive train within a generator bell of the generator.