• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a coupling (1) for transmitting a torque from an input shaft (2) to an output shaft (2). For the transmission of an introduced torque radially arranged leaf springs (4) are provided. The leaf springs (4) are releasably mounted end, to allow replacement of the leaf springs (4). Thus, individual heavily loaded leaf springs (4) can be exchanged or it can be changed by preferably the replacement of all leaf springs, the characteristic of the clutch (1). This allows adaptation to changing requirements. This can be advantageous in particular when using the coupling (1) in measurement setups.
    公开号:AT520347A2
    申请号:T50620/2018
    申请日:2018-07-18
    公开日:2019-03-15
    发明作者:Wilhelm Rüppel Gernot；Markus Becker Dr；Suemnik Nicolai
    申请人:Voith Patent Gmbh；
    IPC主号:
    专利说明:

    Torsionally flexible coupling and torsionally elastic damper
    The invention relates to a torsionally elastic coupling or a torsionally elastic damper.
    From AT 406 293 a torsional vibration damper or a torsionally elastic and vibration damping coupling is known. This damper / clutch has inserted between an inner part and an outer part radial spring elements for torque transmission. This damper / clutch has separating webs arranged between the radial spring elements, chambers being formed by the separating webs and the radial spring elements. These chambers are filled with a liquid. The radial spring elements are clamped one end in the outer part between spacers and engage other ends in axial grooves of the inner part. In a torque transmission occurs between the inner part and outer part to a relative movement due to elastic deformation of the radial spring elements. By the liquid-filled chambers, a damping of the relative movement is achieved.
    From DE 28 48 781 a further elastic shaft coupling with radially arranged spring elements is known. The spring elements are integrally formed with an outer ring. Liquid chambers are in turn arranged between the radial spring elements. The radially arranged spring elements are mounted end in a radially inner primary coupling part.
    From JP 2002 115 726 a damper for the absorption of vibrations in a drive train is known. The damper disclosed therein has spring elements aligned in the radial direction. The spring elements are mounted radially on the outside by means of rotatably mounted elements.
    Highly flexible couplings for use in drive trains are known. Such highly elastic couplings have a solid element consisting of elastomer. The elastic deformability of this elastomeric element is temperature-dependent.
    Highly elastic couplings can also be used as dampers. Then one end is connected to the drive train or to the exciter and the other end can swing freely.
    The invention was based on the object to provide an improved coupling.
    In particular, the invention was based on the object to provide a clutch that is flexible and whose life is increased.
    Furthermore, the invention was based on providing a method for maintenance and / or modification of the coupling.
    The object is achieved by a device according to claim 1 and by a method according to claim 14. Further advantageous features of the embodiment according to the invention can be found in the subclaims.
    In the embodiment of the invention, the object of the invention is achieved by a coupling for transmitting torque from an input shaft to an output shaft, wherein the clutch comprises leaf springs and the leaf springs are arranged in the radial direction and the leaf springs are detachably received in the clutch, so that a Replacement of the leaf springs at standstill of the clutch is possible. By selecting leaf springs with a different spring characteristic, the coupling can be adapted to changing requirements. In addition, by replacing individual leaf springs wear of the leaf springs can be compensated. As a result, an increase in the service life of the clutch is achieved.
    In an advantageous embodiment, it is provided that the leaf springs are mounted non-positively on one of the ends, preferably on the radially outer end. Due to the frictional connection, a relative movement of the leaf spring and non-positive mounting can take place, which has an influence on a possible angle of rotation of the output shaft to the input shaft. Here, on the one hand, the maximum achievable angle of rotation and the time profile of the twist angle to be achieved are determined.
    In one embodiment, the leaf springs are mounted radially outside positively. There are provided stops for the positive reception of the leaf springs. The attacks can still be provided with a damping element. In particular, the stops can be designed in the form of webs. The webs serve here as a counter-stop and have, depending on the material on an optionally additional damping property. The twist angle is then determined by the stiffness of the leaf spring. The rigidity can be adjusted by the material, in particular fiber material, the leaf springs such as carbon fiber, glass fiber, aramid fiber, basalt fiber and the layer structure, in particular the number of layers and fiber angle, the geometric dimensions of the leaf spring such as length, width and shape and the number of leaf springs.
    In a further embodiment, clamping elements are provided for the frictional bearing. These clamping elements are provided for the provision of a clamping force. By the clamping force the non-positive mounting of the leaf springs is achieved. In addition, the clamping elements can also have a damping effect. By selecting the nature of the clamping elements, the acting clamping force and possibly damping effect can be predetermined. It can be provided that the clamping elements are formed elastically deformable. Thereby, a clamping characteristic can be predetermined predetermined. Furthermore, the clamping characteristic is also influenced by the surface texture in the event of relative movement of leaf spring and clamping element.
    In one embodiment, it is provided that the clamping elements are detachably arranged. As a result, an exchange of the clamping elements is possible. By replacing preferably all clamping elements, the characteristic of the coupling can be selectively changed and adapted to changing requirements. Furthermore, an exchange of individual worn clamping elements is possible. Thus, the detachable arrangement of the clamping elements brings several advantages with it.
    In a preferred embodiment it is provided to use leaf springs, wherein the leaf springs at least partially, preferably entirely, consist of a fiber composite material. Compared to steel springs leaf springs with fiber composite material are much easier and continue to leaf springs made of a fiber composite insensitive to dirt and moisture. There is no risk of corrosion, low tendency to fatigue, long service life and low thermal expansion. By choosing the fiber guide and the shape design predetermined spring characteristics can be achieved. In particular, leaf springs made of carbon fiber composite material have proven to be advantageous, which are characterized in particular by resilience and low weight.
    In a preferred embodiment, it is provided that the leaf spring is fixedly mounted at one end, preferably with a positive fit. In particular, by a positive bearing storage of the leaf spring can be achieved in a simple manner.
    In a preferred embodiment, a slotted adapter ring is provided for receiving the inner ends of the leaf springs. The slots are designed to match the shape of the leaf springs. The slots could also be formed directly in the output shaft. Furthermore, the leaf springs have a wedge shape, wherein the leaf springs taper radially outward. Due to the wedge shape, the elasticity of the leaf spring can be strengthened.
    In a preferred embodiment, an annular radially inner receptacle 12 is provided for connection to the output shaft and the leaf springs are connected to the output shaft via this annular inner receptacle. The leaf springs are firmly connected to the inner receptacle.
    In one embodiment, it is provided that the leaf springs are glued to the inner receptacle and for an exchange, the bond is released or the inner receptacle is exchanged with. This may be advantageous in the case where all leaf springs are replaced. Then the pre-assembled inner mount with all leaf springs can be mounted in one step. To connect the leaf springs with the inner receptacle may also be provided that the receptacle is expanded for mounting, e.g. by heating.
    In one embodiment, it is provided that the leaf springs are releasably connected to the annular radially inner receptacle and / or the annular radially inner receptacle is detachably connectable to the output shaft.
    In a preferred embodiment, the provision of an overload protection is provided. In the event of an overload, the connection is released between one of the receptacles, inside and outside, of the leaf springs. As a result, no or only limited torque can be transmitted by means of the leaf springs. Preferably, the frictional connection provided at one end is designed such that when an overload occurs, the effect of the overload releases this connection. Thus, e.g. a maximum allowable angle of rotation can be provided and carried out when exceeding this angle of rotation due to the selected length extension and elastic deformability of the leaf spring releasing the leaf spring from the clamp.
    In a further embodiment, at least one ring element is provided for changing and / or adjusting a diffraction point of some leaf springs, preferably all leaf springs.
    In one embodiment, it is provided that the radially outer receptacle comprises clamping elements for providing a frictional connection of the leaf springs. These clamping elements are preferably arranged interchangeable in the receptacle. Thus, a replacement in wear and an adjustment of the clamping by replacing the clamping elements can be easily performed. As a result, in particular, the clutch can be used even with changed boundary conditions, in which otherwise another clutch would have to be used without this adaptation. An adaptation or change in the characteristic data of the coupling can be required, in particular when using the coupling in test setups, in order to be able to carry out required tests.
    It has proven to be advantageous to use clamping elements which comprise an elastomer as a component. In particular, silicone has proven to be particularly suitable as a material for the clamping elements.
    In a preferred embodiment, it is provided that the leaf springs of the coupling of an end with the engine flywheel are preferably connected via clamping elements. Preferably, the leaf springs are each frictionally connected to the radially outer end with an engine flywheel.
    A preferred embodiment of a clutch for transmitting a torque of an input shaft to an output shaft is a clutch having an annular radially inner receptacle and a radially outer receptacle and with radially disposed leaf springs, wherein the leaf springs are each connected at one end fixed to one of the receptacle and others Ends are positively connected to a receptacle and one of the receptacles is connectable to an input shaft and the other receptacle is connectable to an output shaft.
    Preferably, at least partially made of fiber composite leaf springs are used.
    Method of servicing a clutch according to any one of the preceding claims, comprising the following steps: • at least partially removing a housekeeping • removing leaf springs to be replaced • preferably replacing one or more clamping elements • mounting new leaf springs on flaws • closing the house.
    In summary, the claimed coupling is characterized by leaf springs, which are arranged radially and are accommodated in the coupling.
    The special features of leaf springs made of fiber composite material are the simple maintenance and adaptation of the coupling with regard to rigidity, operating temperature and external influences (chemicals) by simple interchangeability of leaf springs of various properties.
    The stiffness of the leaf spring can be adjusted by fiber material (carbon fiber, glass fiber, aramid fiber, basalt fiber), the layer structure (number of layers, fiber angle), the geometric dimensions of the leaf spring (length, width, shape) and the number of leaf springs.
    The temperature range and the chemical resistance, however, can be adjusted via the matrix (thermosets, thermoplastics, elastomers).
    Advantages resulting from the composite material with respect to the spring elements: • low fatigue tendency, long service life • chemical resistance and compatibility, no risk of corrosion • adaptable strength index and modulus of elasticity • high service temperatures possible • good decay behavior, high structural damping • low density, low weight, low inertia • low temperature expansion
    The following advantages result from the functional principle: • easy maintenance / repair by simple replacement of critically stressed components (leaf spring) • adaptation of the coupling stiffness • adjustment of the application range of the coupling (temperature, chemicals) • axial and angular compensation by providing a spherical bearing easy Possible • Radial compensation is possible by mounting with clamping elements.
    By way of embodiments, further advantageous embodiments of the invention will be explained with reference to the drawings. The features mentioned can not only be implemented advantageously in the illustrated combination, but also individually combined with each other. The figures show in detail:
    Fig. 1: modular coupling in section along the longitudinal axes of the waves
    Fig. 2: modular coupling in plan view
    Fig. 3: modular coupling in exploration representation
    Fig. 4: modular coupling with direct connection to an engine flywheel
    FIG. 5: Exploration illustration of the coupling from FIG. 4
    The figures are described in more detail below.
    In Figure 1 to Figure 3, a clutch 1 is shown, through the clutch 1, an input shaft 2 is connected to an output shaft 3. This coupling 1 is modular. With the input shaft 2, a cup-shaped radially outer receptacle 16 is connected. With the output shaft 3 is in the illustrated
    Embodiment, an annular radially inner receptacle 12 is connected, wherein this inner receptacle 12 is formed as a cup-shaped radially inner connecting element 11. The cup-shaped connecting element 11 has a portion with a smaller outer radius 11 a, which merges into a section with a larger radial outer radius 11 b. This connecting element 11 is formed with a wall thickness which is approximately equal in its areas 11a and 11b. In the area 11b, a bearing 10 for supporting the input shaft 2 is arranged radially inside the connecting element. In the illustrated embodiment, a spherical bearing 24 is provided as a bearing. By a spherical bearing, a small angular offset of the input shaft 2 and output shaft 3 can be compensated in the longitudinal direction.
    Slots 13 for receiving leaf springs 4 are provided in the radially inner receptacle 12. In this embodiment, the leaf springs have a wedge shape, wherein the leaf springs 4 radially inside a greater thickness than radially outside. The extension of the leaf springs in the longitudinal direction 28 is constant. The radially inner end 30 of the leaf springs 4 is positively received in the slots 13. In the illustrated embodiment, the leaf springs are inserted in the longitudinal direction 28 in the slots and by means of a ring 15, these slots are closed in the longitudinal direction 28 and the leaf spring ends 30 are fixed in the slots 13. For fixing the ring 15 screws are provided.
    At their radially outer end 31, the leaf springs 4 are each arranged between two clamping elements 9. The clamping elements 9 have in addition to the provision of a frictional recording of the leaf springs 4 also has a damping function and thus at the same time represent damping elements 18. By elastic deformation torque shocks are partially absorbed. Preferably, the clutch is arranged so that over the outer receptacle 16, a torque is introduced. Due to the greater mass of the outer receptacle 16, an attenuation of input-side torque surges is achieved.
    The outer receptacle 16 is provided with recesses 17. These recesses 17 extend in the circumferential direction 29. In the circumferential direction 29, two clamping elements 9 are arranged opposite one another. Between these two clamping elements 9, an outer end 31 of a leaf spring 4 is received. The clamping elements 9 are biased against each other, thereby acting in each case a clamping force on the outer ends 31 of the leaf springs 4. By selecting the surface condition of the clamping elements 9 and the choice of the biasing force and the elasticity of these elements 9, the damping behavior of this coupling 1 can be set with.
    To set a bending point of the leaf springs 4, a further additional ring element can be provided. As a result, the elastic deformation of the leaf springs 4 can additionally be pre-determined influenced.
    In the illustrated embodiment, the use of leaf springs made of a fiber composite material is provided. Particularly suitable are leaf springs made of carbon. Carbon leaf springs 5 have the advantage of a low weight and beyond can be provided by shaping and fiber guidance a predetermined elastic behavior of the carbon leaf springs 5. A temperature resistance up to 150 ° C is given depending on the fiber matrix in carbon leaf springs.
    An alternative embodiment is shown in FIGS. 4 and 5. In this embodiment, the clutch 1 is directly connected to the flywheel 23 of a motor, not shown. With the flywheel arranged longitudinally pins 19 are firmly connected. On the pins 19 are mounted as a sleeve-shaped clamping elements 9. These sleeve-shaped clamping elements are also effective as damping elements 18. Due to this simple storage replacement of the sleeve-like clamping elements 9 with little technical effort is possible.
    In this embodiment, clamping elements 9 are used for example made of silicone. Due to the simple interchangeability, replacement of the clamping elements 9 can be provided at regular intervals to compensate for wear.
    The outer ends 31 of the leaf springs are in turn arranged between each two clamping elements 9. The clamping force can in turn be selected by shaping the clamping elements and selection of the material predetermined.
    The radially inner end 30 of the leaf springs is in turn firmly connected to a radial inner receptacle 12. The radially inner receptacle is fixedly connected to an output shaft 3.
    List of references 1 Coupling 2 Input shaft 3 Output shaft 4 Leaf springs 5 Leaf spring made of fiber composite material 8 Positive connection 9 Clamping element 10 Bearing 11 Cup-shaped radial inner connecting element 11 a Connecting element with small part no. Outer radius 11 b connecting element with larger outer radius 12 annular radially inner receptacle 13 slots for receiving 15 ring 16 cup-shaped radially outer receptacle 17 recess in the circumferential direction 18 damping element 19 pins 22 screws 23 engine flywheel 24 spherical bearing 25 overload protection 26 twist angle 27 radial direction 28 longitudinal direction 29 circumferential direction 30 Radial inner end d. Leaf spring 31 Radial outer end d. leaf spring
    权利要求:
    Claims (14)
    [1]
    claims
    A clutch (1) for transmitting a torque from an input shaft (2) to an output shaft (2), the clutch (1) comprising leaf springs (4) and the leaf springs (4) arranged in the radial direction (27) in that the leaf springs (4) are detachably mounted on the end, in order to enable an exchange of the leaf springs (4).
    [2]
    2. Coupling according to claim 1, characterized in that the leaf springs (4) at one of the ends, preferably at the radially outer end (31), are frictionally mounted.
    [3]
    3. Coupling according to claim 1 or 2, characterized in that for the non-positive bearing clamping elements (9) are provided, wherein the clamping elements (9) are preferably arranged detachably for replacement.
    [4]
    4. Coupling according to one of the preceding claims, characterized in that the leaf springs (5) at least partially, preferably entirely, consist of a fiber composite material. Which, description introduction
    [5]
    5. Coupling according to one of the preceding claims, characterized in that the leaf springs (4) at one end, preferably at the inner end (30), are mounted positively.
    [6]
    6. Coupling according to one of the preceding claims, characterized in that the leaf springs (4) have a wedge-shaped cross-sectional profile.
    [7]
    7. Coupling according to one of the preceding claims, characterized in that for connection to the output shaft (3) an annular radially inner receptacle (12) is provided and the leaf springs (4) with the output shaft (3) by means of the annular inner receptacle (12 ) are connectable.
    [8]
    8. Coupling according to one of the preceding claims, characterized in that the leaf springs (4) with the annular radially inner receptacle (12) are detachably connected and / or the annular radially inner receptacle (12) detachably connected to the output shaft (3) is connectable.
    [9]
    9. Coupling according to one of the preceding claims, characterized in that at least one ring element for changing and / or setting a diffraction point of the leaf springs (4) is provided.
    [10]
    10. Coupling according to one of the preceding claims, characterized in that the leaf springs (4) are released in the event of a predetermined overload as overload protection (25) from the non-positive storage.
    [11]
    11. Coupling according to one of the preceding claims, characterized in that the radially outer receptacle (16) comprises clamping elements (9) for providing a frictional connection of the leaf springs (4).
    [12]
    12. Coupling according to one of the preceding claims, characterized in that the clamping elements (9) comprise as part of an elastomer.
    [13]
    13. Coupling according to the preamble of claim 1, wherein the coupling has an annular radially inner receptacle (12) and the leaf springs with a radially inner end (30) with the radially inner receptacle (12) are firmly connected and a radially outer receptacle ( 16) is provided for receiving the outer ends of the leaf springs (31), characterized in that the leaf springs (4) consist of a fiber composite material.
    [14]
    14. A method for maintaining a clutch (1) according to one of the preceding claims, comprising the following steps: • at least partially removing a housekeeping • removing leaf springs to be replaced (4) • preferably replacing one or more clamping elements • assembling new leaf springs (4) at defects • Closing the house.
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    DE102017119493A1|2019-02-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB315268A|1928-07-10|1930-01-16|Fried Krupp Germaniawerft Ag|Improvements in elastic shaft couplings|
    AT255847B|1965-11-18|1967-07-25|Geislinger Dr Ing Leonard|Elastic coupling and vibration damper|
    AT358884B|1977-11-21|1980-10-10|Hackforth Gmbh & Co Kg|ELASTIC SHAFT COUPLING|
    AT406293B|1998-05-08|2000-03-27|Ellergon Antriebstech Gmbh|TORQUE DAMPER OR TURN-ELASTIC AND VIBRATION DAMPING CLUTCH|
    JP2002115726A|2000-08-03|2002-04-19|Kayseven Co Ltd|Elastic shaft coupling|
    DE102015220172A1|2014-11-20|2016-05-25|Schaeffler Technologies AG & Co. KG|Decoupling unit and associated roll stabilizer|RU2765323C1|2021-10-01|2022-01-28|Общество с ограниченной ответственностью "Ниагара"|Device for transforming spacecraft structures|
    RU209011U1|2021-10-01|2022-01-27|Общество с ограниченной ответственностью "Ниагара"|DEVICE FOR TRANSFORMING SPACE VEHICLE STRUCTURES|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017119493.2A|DE102017119493A1|2017-08-25|2017-08-25|Torsionally flexible coupling and torsionally elastic damper|
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