Coupling, reduction gear and wind power generation device

Abstract

The utility model provides a coupler, a speed reduction device and a wind power generation device. The coupler comprises a coupling unit, the coupling unit comprises a main body piece, the main body piece defines a connecting space penetrating in the axial direction, the two ends of the connecting space are suitable for being connected with a driving shaft and a driven shaft respectively, the main body piece comprises a plurality of elastic petals arranged around the axis of the main body piece, and the connecting space is defined by the elastic petals; the connecting assembly is arranged at the end, in the axial direction, of the main body piece, and the multiple elastic petals are suitable for being fixedly connected through the connecting assembly. According to the coupler, the elastic deformation areas are formed in the axial direction, the radial direction and the angular direction through the main body piece structure composed of the multiple elastic petals, installation errors and operation deviation between the driving shaft and the driven shaft can be effectively absorbed, and therefore abrasion of the coupler is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This application relates to the field of transmission components technology, and in particular to a coupling, a speed reduction device, and a wind power generation device. Background Technology

[0002] In modern mechanical transmission systems, couplings, as key components connecting the main shaft and gearbox, primarily function to transmit torque and motion while allowing a certain degree of axial, radial, and angular displacement. The design and performance of couplings have a significant impact on the efficiency, stability, and lifespan of the entire transmission system.

[0003] In traditional coupling structures, misalignment between the spindle and gearbox can occur during installation due to manufacturing tolerances, installation errors, or operational misalignment. This misalignment causes additional stress and vibration, leading to mechanical wear, energy loss, and ultimately affecting the equipment's lifespan. Utility Model Content

[0004] This application provides a coupling, a speed reduction device, and a wind power generation device. Through the main body structure composed of multiple elastic petals, elastic deformation areas are formed in the axial, radial, and angular directions, which can effectively absorb installation errors and operational misalignments between the drive shaft and the driven shaft, thereby reducing the wear of the coupling and helping to extend the service life of the equipment.

[0005] In a first aspect, this application provides a coupling comprising:

[0006] The coupling unit includes:

[0007] The main body defines a connecting space that extends through the axis, the two ends of which are respectively adapted to be connected to a driving shaft and a driven shaft. The main body includes a plurality of elastic petals arranged around the axis of the main body, and the plurality of elastic petals enclose the connecting space.

[0008] A connecting assembly is provided at the axial end of the main body, and the plurality of elastic flaps are adapted to be fixedly connected by the connecting assembly.

[0009] In the use of this coupling, the driving shaft and the driven shaft can be inserted into the two ends of the connection space respectively. When the driving shaft rotates and outputs torque to the driven shaft, the main body is composed of multiple elastic petals, forming elastic deformation areas in the axial, radial and angular directions. This can effectively absorb the installation error and running offset between the driving shaft and the driven shaft, thereby reducing the wear of the coupling and helping to extend the service life of the equipment.

[0010] In some embodiments, there are three elastic lobes, which are arranged about the axis of the body member.

[0011] The three elastic lobes form a triangular symmetrical layout. During torque transmission, each elastic lobe can independently bear the load and evenly distribute the stress. This helps to avoid stress concentration caused by local overload during torque transmission when the main component is a monolithic structure, making torque transmission smoother. It is especially suitable for applications requiring precise synchronous transmission (such as wind power generation devices).

[0012] According to some embodiments of this utility model, the connecting component includes a plurality of arc-shaped connecting blocks, the number of which corresponds to the number of elastic flaps.

[0013] The arc-shaped connecting block is located at the axial end of the main body, and multiple arc-shaped connecting blocks are arranged around the axis of the main body. Adjacent arc-shaped connecting blocks are fixedly connected to form a fixing ring, and the fixing ring has an axially penetrating mounting hole.

[0014] At least one of the elastic flaps is fixedly connected to the arc-shaped connecting block.

[0015] The rigid fixed ring structure formed by the arc-shaped connecting blocks creates a closed-loop constraint in the axial direction. This enhances the axial load-bearing capacity of the coupling. Furthermore, the fixed connection design between each elastic lobe and its corresponding arc-shaped connecting block ensures distributed load transfer. When torque is applied, stress is directly introduced into the root region of the elastic lobe through the rigid connecting blocks. Compared to traditional integral connection structures, this reduces abrupt changes in the stress transmission path, resulting in a more uniform stress distribution in the elastic element. This delays the initiation of fatigue cracks and extends the service life of the coupling.

[0016] According to some embodiments of this utility model, the arc-shaped connecting block has a first mounting hole and a second mounting hole respectively at both ends along the circumferential direction.

[0017] The first mounting hole of one of the arc-shaped connecting blocks corresponds to the second mounting hole on the adjacent arc-shaped connecting block, and the fastener passes through the first mounting hole and the second mounting hole to fix the two adjacent arc-shaped connecting blocks together.

[0018] By matching the first and second mounting holes, the fixed ring can be precisely aligned in a free state. Then, the main body is locked by the fastener, so that multiple elastic petals surround and form the main body. This helps to prevent the coupling from loosening under high-speed operation or impact load, and improves the structural reliability of the main body.

[0019] In some embodiments, the elastic flap includes an elastic portion and mating portions located at both ends of the elastic portion along the axial direction. The elastic portion has a plurality of textured structures arranged along the axial direction of the main body. The textured structures are U-shaped, and the opening directions of two adjacent textured structures are opposite.

[0020] The U-shaped textured structure arranged axially in the elastic section forms a multi-level elastic deformation unit. The staggered layout of adjacent texture openings with opposite directions gives the elastic lobes bidirectional compensation characteristics in the axial, radial, and angular directions. When the driving shaft and driven shaft are misaligned, the symmetrical deformation of the U-shaped structure can absorb both positive and negative displacements simultaneously, significantly improving the overall compensation capability of the coupling.

[0021] In some embodiments, the outer surface of the elastic flap is coated with a reinforcing layer.

[0022] By adding a reinforcing layer to form a protective layer on the surface of the elastic flap, the wear resistance and deformation resistance of the elastic flap surface are improved, thereby inhibiting the deterioration of the surface morphology of the elastic flap during long-term use. This design can maintain the initial fit accuracy of the elastic flap and avoid increased vibration and noise in the transmission system caused by surface wear.

[0023] In some embodiments, the coupling further includes:

[0024] A damping ring is disposed at the axial end of the main body, and the damping ring is located on the side of the connecting assembly facing the main body.

[0025] The elastic deformation of the damping ring can compensate for the minute relative displacement between the connecting components and the main body, creating a dynamic alignment effect during torque transmission. This adaptive compensation mechanism enables the transmission system to maintain smooth operation under variable load conditions, reduces transmission errors caused by speed fluctuations, and improves the transmission accuracy of the coupling.

[0026] In some embodiments, the coupling further includes:

[0027] A sensor, disposed within the main body component, is used to detect the offset of the main body component at both ends along the axial direction.

[0028] The main body is provided with angular contact ball bearings at both ends along the axial direction.

[0029] Built-in sensors can acquire real-time alignment deviation data of the drive shaft and driven shaft by measuring the relative displacement of the two ends of the main body in a non-contact manner. This enables the transmission system to have self-diagnostic capabilities. When the offset exceeds the safety threshold, an early warning can be triggered to avoid catastrophic failures caused by misalignment, which helps to improve the reliability of equipment operation.

[0030] Secondly, embodiments of this application also provide a deceleration device, comprising:

[0031] Gearbox body,

[0032] The aforementioned coupling is connected to the main body of the gearbox.

[0033] The speed reduction device of this utility model, due to the use of the above-mentioned coupling, can effectively absorb the manufacturing tolerances and installation deviations between the input shaft and the drive shaft of the gearbox by the three-dimensional compensation characteristics of the elastic flap of the coupling. Its axial / radial / angular displacement compensation capability enables the speed reduction device to achieve smooth operation without precise alignment, significantly reducing the difficulty of on-site assembly. At the same time, it also helps to reduce the wear of the speed reduction device, thereby extending the service life of the speed reduction device.

[0034] Thirdly, embodiments of this application also provide a wind power generation device, including: the aforementioned speed reduction device.

[0035] When the wind power generation device of this utility model is subjected to random load impacts such as gusts and turbulence, the use of the aforementioned deceleration device and the buffering effect of the three-dimensional compensation characteristics of the main body of the coupling help to reduce the instantaneous torque fluctuation of the transmission system of the wind power generation device, thereby reducing the maximum impact load on the transmission system of the wind power generation device and helping to extend the service life of the wind power generation device. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0037] Figure 1 This is a schematic diagram of the structure of the coupling according to an embodiment of the present invention;

[0038] Figure 2 This is an exploded structural diagram of the coupling according to an embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the structure in which the elastic flap and the arc-shaped connecting block are fixedly connected according to an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the structure of the elastic flap not being fixedly connected to the arc-shaped connecting block according to an embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of the structure of the arc-shaped connecting block according to an embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram of the structure of a wind power generation device according to an embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of a wind power generation device according to another embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100. Couplings;

[0046] 110. Coupling unit; 111. Main body; 1111. Elastic flap; 1111a. Elastic part; 112. Connecting assembly; 1121. Arc-shaped connecting block; 1121a. First mounting hole; 1121b. Second mounting hole;

[0047] 120. Damping ring;

[0048] 130. Angular contact ball bearing.

[0049] 200. Speed ​​reduction device;

[0050] 300. Wind power generation equipment.

[0051] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0052] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0053] In traditional coupling structures, misalignment between the spindle and gearbox can occur during installation due to manufacturing tolerances, installation errors, or operational misalignment. This misalignment causes additional stress and vibration, leading to mechanical wear, energy loss, and ultimately affecting the equipment's lifespan.

[0054] In view of this, this application provides a coupling, a speed reduction device, and a wind power generation device. Through the main body structure composed of multiple elastic petals, elastic deformation areas are formed in the axial, radial, and angular directions, which can effectively absorb installation errors and operational misalignments between the drive shaft and the driven shaft, thereby reducing the wear of the coupling and helping to extend the service life of the equipment.

[0055] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0056] refer to Figures 1 to 5In one aspect, this application provides a coupling 100, which may include a coupling unit 110.

[0057] The coupling unit 110 may include a main body 111 and a connecting assembly 112. The main body 111 defines a connecting space that extends axially. The two ends of the connecting space are respectively adapted to connect to the driving shaft and the driven shaft. In other words, the main body 111 may be a cylindrical member with a connecting space extending axially inside. The driving shaft and the driven shaft are respectively inserted into the connecting space from both ends of the main body 111 and fixedly connected to the main body 111 by a key connection or other connection method. In this way, the coupling 100 can output the torque on the driving shaft to the driven shaft.

[0058] The main body 111 may include multiple elastic lobes 1111 arranged around the axis of the main body 111. The multiple elastic lobes 1111 enclose a connecting space. In other words, the main body 111 can be a split structure, with multiple elastic lobes 1111 together forming the main body 111. For example, there can be two elastic lobes 1111, each with an arc of 180°. Alternatively, there can be three elastic lobes 1111, each with an arc of 120°. Of course, there can be other numbers of elastic lobes 1111, and this application does not limit this.

[0059] Thus, the main body 111 structure, composed of multiple elastic lobes 1111, forms elastic deformation regions in the axial, radial, and angular directions, effectively absorbing installation errors and operational misalignments between the drive and driven shafts. The distributed layout of the elastic lobes 1111 enables flexible compensation in three-dimensional space, significantly reducing additional loads caused by misalignment and thus suppressing abnormal stress concentration. Furthermore, during torque transmission, it can absorb vibration energy generated by the transmission system through elastic deformation. Compared to traditional rigid coupling structures, the main body 111 of this application has superior vibration isolation, reducing system resonance amplitude and broadening the vibration reduction frequency band.

[0060] A connecting assembly 112 is located at the axial end of the main body 111, and multiple elastic petals 1111 are adapted to be fixedly connected by the connecting assembly 112. For example, the connecting assembly 112 can be an annular structure adapted to the outer diameter of the main body 111, the annular structure having internal threads, and the main body 111 having external threads. The connecting assembly 112 and the main body 111 are connected by threads, and the multiple elastic petals 1111 are tightly fixed by the connecting assembly 112. Alternatively, adjacent elastic petals 1111 can be provided with corresponding connecting holes, and the connecting assembly 112 can include fasteners such as bolts and screws, which are used to fix the elastic petals 1111 together. Thus, the combined design of the connecting assembly 112 and the elastic petals 1111 ensures axial connection stiffness and achieves balanced stress distribution through the elastic petals 1111, which helps avoid local fatigue failure caused by over-constraint in traditional coupling structures and significantly extends the service life of the coupling 100.

[0061] In the use of the coupling 100 of this utility model, the driving shaft and the driven shaft can be inserted into the two ends of the connection space respectively. When the driving shaft rotates and outputs torque to the driven shaft, since the main body 111 is composed of multiple elastic petals 1111, elastic deformation areas are formed in the axial, radial and angular directions, which can effectively absorb the installation error and running offset between the driving shaft and the driven shaft, thereby reducing the wear of the coupling 100 and helping to extend the service life of the equipment.

[0062] In addition, the continuous contact surface design of the elastic flap 1111 helps to improve the smoothness of torque transmission. Compared with the traditional intermittent coupling structure, it can reduce the instantaneous power loss caused by impact load and improve the transmission accuracy.

[0063] In some embodiments, there can be three elastic lobes 1111, arranged around the axis of the main body 111, i.e., the arc corresponding to each elastic lobe 1111 is 120°, and the three elastic lobes 1111 enclose the main body 111. Thus, the three elastic lobes 1111 form a triangular symmetrical layout, allowing each elastic lobe 1111 to independently bear the load and evenly distribute stress during torque transmission. This helps avoid stress concentration caused by localized overload during torque transmission when the main body 111 is an integral structure, resulting in smoother torque transmission, and is particularly suitable for applications requiring precise synchronous transmission (such as wind power generation devices 300).

[0064] Understandably, the distributed structure of the three elastic lobes 1111 can simultaneously absorb axial, radial, and angular deviations. When the driving shaft and driven shaft experience slight misalignment, the three elastic lobes 1111 form a three-dimensional compensation effect through elastic deformation. Compared to having only two elastic lobes 1111 (which can only provide unidirectional or bidirectional compensation), the three elastic lobes 1111 in this embodiment can provide higher compensation capability, thereby reducing the additional load caused by misalignment.

[0065] It should be noted that the more elastic lobes 1111 there are, the lower the structural strength of the main body 111 will be, and the more difficult it will be to install. Therefore, setting three elastic lobes 1111 can better balance the structural strength and offset compensation capability of the main body 111. Of course, in other embodiments of this application, the number of elastic lobes 1111 can also be other than that, and this application does not limit it.

[0066] According to some embodiments of the present invention, the connecting component 112 includes a plurality of arc-shaped connecting blocks 1121, the number of which corresponds to the number of elastic flaps 1111. For example, when there are three elastic flaps 1111, there can also be three arc-shaped connecting blocks 1121.

[0067] Arc-shaped connecting blocks 1121 are located at the axial end of the main body 111, and multiple arc-shaped connecting blocks 1121 are arranged around the axis of the main body 111. Adjacent arc-shaped connecting blocks 1121 are fixedly connected to form a fixed ring. The fixed ring has an axially penetrating mounting hole. The arc-shaped connecting blocks 1121 form a rigid fixed ring structure, creating a closed-loop constraint in the axial direction. On the one hand, this enhances the axial load-bearing capacity of the coupling 100. On the other hand, the fixed connection design between each elastic lobe 1111 and the corresponding arc-shaped connecting block 1121 enables distributed load transfer. When torque is applied, stress is directly introduced into the root region of the elastic lobe 1111 through the rigid connecting blocks. Compared with the traditional integral connection structure, this reduces abrupt changes in the stress transmission path, making the stress distribution of the elastic element more uniform, thereby delaying the occurrence of fatigue cracks and extending the service life of the coupling 100.

[0068] In this configuration, at least one elastic flap 1111 is fixedly connected to the arc-shaped connecting block 1121. For example, one elastic flap 1111 may be fixedly connected to the arc-shaped connecting block 1121, or two elastic flaps 1111 may be fixedly connected to two arc-shaped connecting blocks 1121 respectively. Thus, when multiple arc-shaped connecting blocks 1121 are fixedly connected to form a fixed ring, the fixing effect of the connecting assembly 112 on the main body 111 is better due to the fixed connection between at least one elastic flap 1111 and the arc-shaped connecting block 1121, which is beneficial to improving the structural stability of the coupling 100.

[0069] Understandably, at least one arc-shaped connecting block 1121 may not be fixedly connected to the elastic flap 1111. In this way, when the connection forms a fixed ring, at least one arc-shaped connecting block 1121 may be an independent structure. In this case, a fixed ring with a large outer diameter will not be directly formed at the end of the main body 111, which makes it easier to install other accessories (such as the damping ring 120 mentioned later) onto the main body 111, thereby improving the assembly flexibility of the coupling 100.

[0070] According to some embodiments of this utility model, the arc-shaped connecting block 1121 has a first mounting hole 1121a and a second mounting hole 1121b respectively at both ends along the circumference. The first mounting hole 1121a of one arc-shaped connecting block 1121 corresponds to the second mounting hole 1121b on the adjacent arc-shaped connecting block 1121. The fixing member passes through the first mounting hole 1121a and the second mounting hole 1121b to fix two adjacent arc-shaped connecting blocks 1121 together. Through the matching design of the first mounting hole 1121a and the second mounting hole 1121b, the fixing ring can be accurately aligned in the free state. Then, the fixing member locks the main body 111, so that multiple elastic petals 1111 surround and form the main body 111. This helps to prevent the coupling 100 from loosening under high-speed operation or impact load, and improves the structural reliability of the main body 111.

[0071] Furthermore, adjacent arc-shaped connecting blocks 1121 form a closed-loop constraint through rigid fasteners, creating a continuous load transmission chain in the axial direction. This design allows torque to be directly introduced into the root region of the elastic lobe 1111 through the rigid connecting blocks, reducing abrupt changes in the stress transmission path and making the stress distribution of the elastic element more uniform, thereby delaying the initiation of fatigue cracks.

[0072] Alternatively, the fasteners can be standard parts such as bolts and screws, which helps to save production costs.

[0073] In some embodiments, the elastic flap 1111 includes an elastic portion 1111a and mating portions located at both ends of the elastic portion 1111a along the axial direction. The elastic portion 1111a has a plurality of textured structures arranged along the axial direction of the main body 111. The textured structures are U-shaped and the opening directions of two adjacent textured structures are opposite.

[0074] The U-shaped textured structure arranged axially in the elastic part 1111a forms a multi-level elastic deformation unit. The staggered layout of adjacent texture openings with opposite directions gives the elastic lobe 1111 bidirectional compensation characteristics in the axial, radial, and angular directions. When the driving shaft and driven shaft are misaligned, the symmetrical deformation of the U-shaped structure can absorb both positive and negative displacements simultaneously, significantly improving the overall compensation capability of the coupling 100. At the same time, while ensuring elastic deformation capability, the U-shaped structure can reduce the material usage of the elastic part 1111a, allowing the coupling 100 to reduce rotational inertia while maintaining sufficient torsional stiffness, thereby improving transmission performance.

[0075] In some embodiments, the outer surface of the elastic flap 1111 is coated with a reinforcing layer.

[0076] By adding a reinforcing layer, a protective layer is formed on the surface of the elastic flap 1111, which helps to improve the wear resistance and deformation resistance of the elastic flap 1111 surface, thereby inhibiting the deterioration of the surface morphology of the elastic flap 1111 during long-term use. This design can maintain the initial fit accuracy of the elastic flap 1111 and avoid increased vibration and noise in the transmission system caused by surface wear.

[0077] Alternatively, the reinforcing layer can be a low-friction polytetrafluoroethylene coating, providing the body 111 with excellent elasticity and abrasion resistance.

[0078] In some embodiments, the coupling 100 further includes a damping ring 120, which may be disposed at the axial end of the main body 111, and the damping ring 120 is located on the side of the connecting assembly 112 facing the main body 111. The elastic deformation of the damping ring 120 can compensate for the small relative displacement between the connecting assembly 112 and the main body 111, forming a dynamic alignment effect during torque transmission. This adaptive compensation mechanism enables the transmission system to maintain smooth operation under variable load conditions, reduces transmission errors caused by speed fluctuations, and improves the transmission accuracy of the coupling 100.

[0079] In some embodiments, the coupling 100 further includes a sensor disposed within the main body 111. The sensor is used to detect the offset of the two ends of the main body 111 along the axial direction. The built-in sensor can obtain the alignment deviation data of the drive shaft and the driven shaft in real time by non-contactly measuring the relative displacement of the two ends of the main body 111 along the axial direction, so that the transmission system has self-diagnostic capability. When the offset exceeds the safety threshold, an early warning can be triggered to avoid catastrophic failure caused by misalignment, which is beneficial to improving the reliability of equipment operation.

[0080] The main body 111 is provided with angular contact ball bearings 130 at both ends along the axial direction. The angular contact ball bearings 130 adopt a point contact design, which allows small axial displacement while bearing axial load. This forms a synergistic effect with the flexible compensation of the elastic flap 1111, transforming the traditional rigid support into an elastic-rigid composite support system. This helps to reduce local stress concentration on the main body 111 and extend the service life of the coupling 100.

[0081] Understandably, in one specific implementation, the damping ring 120 can be a magnetohydrodynamic damping ring 120, and the active component can also be provided with a control module corresponding to the magnetohydrodynamic damping ring 120. When the sensor detects that the offset at both ends of the coupling 100 is too large, the engineer can change the damping of the magnetohydrodynamic damping ring 120 through the control module, thereby reducing the offset of the coupling 100 and improving the reliability of the coupling 100.

[0082] Secondly, this application embodiment also provides a speed reduction device 200, which may include: a speed reduction gearbox body and the aforementioned coupling 100, wherein the coupling 100 is connected to the speed reduction gearbox body.

[0083] Understandably, coupling 100 can be connected to the input shaft of the gearbox body. In this case, the input shaft of the gearbox body is the driven shaft, and the driving shaft can be the output shaft of the power output device. Of course, coupling 100 can also be connected to the output shaft of the gearbox body. In this case, the output shaft of the gearbox body is the driving shaft, and the connecting shaft between the transmission system of the application equipment of the reduction gear 200 (such as the wind power generation device 300) and the gearbox body forms the driving shaft.

[0084] The speed reduction device 200 of this utility model, due to the use of the aforementioned coupling 100, can effectively absorb the manufacturing tolerances and installation deviations between the input shaft and the drive shaft of the speed reduction gearbox by the three-dimensional compensation characteristics of the elastic flap 1111 of the coupling 100. Its axial / radial / angular displacement compensation capability enables the speed reduction device 200 to achieve smooth operation without precise alignment, significantly reducing the difficulty of on-site assembly. At the same time, it also helps to reduce the wear of the speed reduction device 200, thereby extending the service life of the speed reduction device 200.

[0085] refer to Figure 6 and Figure 7 Thirdly, embodiments of this application also provide a wind power generation device 300, including: the aforementioned speed reduction device 200.

[0086] When the wind power generation device 300 of this utility model is subjected to random load impacts such as gusts and turbulence, the use of the aforementioned deceleration device 200 and the buffering effect of the three-dimensional compensation characteristics of the main body 111 of the coupling 100 helps to reduce the instantaneous torque fluctuation of the transmission system of the wind power generation device 300, thereby reducing the maximum impact load on the transmission system of the wind power generation device 300 and extending the service life of the wind power generation device 300.

[0087] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0088] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A coupling, characterized in that, include: The coupling unit includes: The main body defines a connecting space that extends through the axis, the two ends of which are respectively adapted to be connected to a driving shaft and a driven shaft. The main body includes a plurality of elastic petals arranged around the axis of the main body, and the plurality of elastic petals enclose the connecting space. A connecting assembly is provided at the axial end of the main body, and the plurality of elastic flaps are adapted to be fixedly connected by the connecting assembly.

2. The coupling according to claim 1, characterized in that, There are three elastic lobes, which are arranged around the axis of the main body.

3. The coupling according to claim 2, characterized in that, The connecting component includes multiple arc-shaped connecting blocks, the number of which corresponds to the number of elastic flaps. The arc-shaped connecting block is located at the axial end of the main body, and multiple arc-shaped connecting blocks are arranged around the axis of the main body. Adjacent arc-shaped connecting blocks are fixedly connected to form a fixing ring, and the fixing ring has an axially penetrating mounting hole. At least one of the elastic flaps is fixedly connected to the arc-shaped connecting block.

4. The coupling according to claim 3, characterized in that, The arc-shaped connecting block has a first mounting hole and a second mounting hole at both ends along the circumference. The first mounting hole of one of the arc-shaped connecting blocks corresponds to the second mounting hole on the adjacent arc-shaped connecting block, and the fastener passes through the first mounting hole and the second mounting hole to fix the two adjacent arc-shaped connecting blocks together.

5. The coupling according to any one of claims 1-4, characterized in that, The elastic flap includes an elastic portion and mating portions located at both ends of the elastic portion along the axial direction. The elastic portion has multiple textured structures arranged along the axial direction of the main body. The textured structures are U-shaped, and the opening directions of two adjacent textured structures are opposite.

6. The coupling according to any one of claims 1-4, characterized in that, The outer surface of the elastic flap is coated with a reinforcing layer.

7. The coupling according to any one of claims 1-4, characterized in that, Also includes: A damping ring is disposed at the axial end of the main body, and the damping ring is located on the side of the connecting assembly facing the main body.

8. The coupling according to any one of claims 1-4, characterized in that, Also includes: A sensor, disposed within the main body component, is used to detect the offset of the main body component at both ends along the axial direction. The main body is provided with angular contact ball bearings at both ends along the axial direction.

9. A speed reduction device, characterized in that, include: Gearbox body, The coupling according to any one of claims 1-8, wherein the coupling is connected to the gearbox body.

10. A wind power generation device, characterized in that, include: The deceleration device according to claim 9.

Images