A wind power coupling

Abstract

This invention discloses a wind turbine coupling, belonging to the technical field of couplings. It includes a connecting seat, an insulating cylinder, an error adapter, a coupling part, and a brake. Two connecting seats are provided and respectively installed at both ends of the insulating cylinder. Two error adapters are provided and respectively located on opposite sides of the two connecting seats. Two coupling parts are provided and respectively located on opposite sides of the two error adapters. The two coupling parts are used to connect the gearbox output shaft and the generator input shaft, respectively. One of the coupling parts is connected to the error adapter via a rotating component. The brake is used to brake or release the rotating component. This application has the effect of facilitating quick and easy fixing of transmission components, improving maintenance efficiency and safety.

Description

Technical Field

[0001] This invention relates to the field of couplings, and more particularly to a wind power coupling. Background Technology

[0002] Wind turbine couplings are key components of the transmission system of wind turbine generator sets, primarily used to connect the output shaft of the gearbox and the input shaft of the generator. As a crucial component connecting the gearbox and generator, the core function of wind turbine couplings is to transmit enormous torque while compensating for axial, radial, and angular misalignment between the two, and absorbing some vibration and impact loads. This is essential for ensuring the smooth operation and service life of the entire transmission system.

[0003] In actual wind farm operation, electrical components such as generators require regular maintenance or replacement if faulty. Current wind turbine couplings primarily focus on torque transmission and do not integrate dedicated braking mechanisms. When generator maintenance is required, additional braking devices are typically needed to secure the transmission components, resulting in complex procedures. Furthermore, the inconvenience of installing external braking devices or their improper positioning can negatively impact maintenance efficiency and safety. Summary of the Invention

[0004] To facilitate quick and easy fixing of transmission components and improve maintenance efficiency and safety, this application provides a wind power coupling.

[0005] This application provides a wind power coupling, which adopts the following technical solution:

[0006] A wind turbine coupling includes a connecting seat, an insulating cylinder, an error adapter, a coupling part, and a brake. Two connecting seats are provided and respectively installed at both ends of the insulating cylinder. Two error adapters are provided and respectively located on opposite sides of the two connecting seats. Two coupling parts are provided and respectively located on opposite sides of the two error adapters. The two coupling parts are respectively used to connect the gearbox output shaft and the generator input shaft. One of the coupling parts is connected to the error adapter via a rotating component. The brake is used to brake or release the rotating component.

[0007] By adopting the above technical solution, the wind turbine coupling achieves electrical isolation during the transmission process through the insulating cylinder, which helps to prevent shaft current corrosion and ensure the service life of the coupling. When the generator needs to be inspected and maintained, the rotation of the rotating parts can be directly locked by the brake to block the transmission of the coupling. That is, it is convenient to quickly fix the transmission components of the coupling, thereby improving maintenance efficiency and safety.

[0008] Optionally, the brake includes a fixed seat, a sliding seat, a driving member, and brake friction pads. The fixed seat is fixedly installed, and the sliding seat is slidably fitted onto the fixed seat. A brake groove is formed on the top of the sliding seat, and the rotating member is partially located within the brake groove. The sliding seat is provided with two brake plates, which are respectively located on both sides of the rotating member. Two sets of brake friction pads are provided and are respectively located on the side of the two brake plates that are close to each other. The driving member is installed on the sliding seat and is used to drive one of the brake plates to move towards the rotating member. The other brake plate is fixedly installed on the sliding seat.

[0009] By adopting the above technical solution, the driving component directly pushes one of the brake plates to move, and the brake friction pads installed on the brake plate press against the rotating component. The sliding seat slides on the fixed seat under the reaction force of the rotating component, thereby causing the brake plate and its brake friction pads fixed on the sliding seat to press against the rotating component from the other side. The double-sided brake plates of the rotating component can be centered and clamped for braking with only a single driving component. The structure is compact and the braking efficiency is high.

[0010] Optionally, the rotating component includes a gear, the diameter of which is larger than the outer diameter of the insulating cylinder.

[0011] By adopting the above technical solution, the gear is designed to be driven by an external drive source, which facilitates the simulation of the impeller's transmission conditions, enabling safe and convenient testing of the coupling during maintenance or commissioning, improving equipment maintainability, and allowing the larger gear to brake more securely.

[0012] Optionally, another coupling is connected to an error adapter via a limiter. The error adapter includes four sets of steel plates and four sets of mounting shafts. The four sets of mounting shafts are evenly distributed circumferentially around the axis of the insulating cylinder. One end of each set of steel plates is rotatably connected to one of the mounting shafts, and the other end is rotatably connected to an adjacent mounting shaft. Of the four sets of mounting shafts of the error adapter connected to the rotating component, two sets of radially opposite mounting shafts are fixedly connected to the connecting seat, and the other two sets of mounting shafts are fixedly connected to the rotating component. Of the four sets of mounting shafts of the error adapter connected to the limiter, two sets of radially opposite mounting shafts are fixedly connected to the connecting seat, and the other two sets of mounting shafts are connected to the limiter.

[0013] By adopting the above technical solution, four sets of mounting shafts are evenly distributed circumferentially to form a rigid frame foundation. The two ends of the four sets of steel plates are respectively hinged to two adjacent mounting shafts, thus forming a parallelogram mechanism composed of steel plates capable of slight elastic deformation in the circumferential direction. When there is radial, angular, or combined misalignment between the gearbox shaft and the generator shaft connected by the coupling, the coordinated deformation of multiple sets of steel plates in the circumferential direction can effectively absorb and compensate for alignment errors, reduce the additional stress caused by misalignment in the transmission chain, and ensure the balance and stability of torque transmission.

[0014] Optionally, the mounting shaft includes a shaft body, a mounting fixing ring, a mounting limiting ring, and a mounting pressing ring. The shaft body passes through and is rotatably fitted to the ends of two sets of steel sheet groups. Two mounting limiting rings are provided, each pressing against the side of the two steel sheet groups that are far apart. The mounting fixing ring is fixedly installed on the shaft body. The mounting pressing ring is located on the side of one mounting limiting ring that is far away from the other mounting limiting ring. The mounting fixing ring is provided with a plurality of mounting bolts that are evenly distributed circumferentially around its own axis and radially arranged. Each mounting bolt is threaded into the mounting fixing ring, and one end of each mounting bolt presses against the mounting pressing ring. The mounting pressing ring is movably sleeved on the shaft body.

[0015] By adopting the above technical solution, the ends of multiple mounting bolts evenly distributed in the circumference push against the mounting retaining ring, which facilitates the precise and uniform application of controllable axial clamping force to the entire steel sheet assembly through the mounting limiting ring. This enables convenient and uniform adjustment of the preload of the steel sheet assembly. Tightening a single mounting bolt allows for precise local adjustment of the clamping force of the mounting limiting ring on the mounting retaining ring, thereby fine-tuning the preload state of the steel sheet assembly to adapt to different usage scenarios or to adjust according to performance changes after long-term use.

[0016] Optionally, the limiter includes a coaxially arranged connecting disc, a pressing disc, and a connecting plate. The connecting plate is located between the connecting disc and the pressing disc. One of the coupling parts is coaxially fixedly connected to the connecting plate. Limiting friction plates are fixedly installed on the side of the connecting plate facing the connecting disc and the pressing disc. The connecting disc and the pressing disc are fastened together by circumferentially distributed fixing bolts. The fixing bolts pass through the pressing disc and the connecting disc in sequence and are locked with nuts. A pressure sensor is provided between the bolt head of the fixing bolt and the pressing disc. The pressure sensor is used to monitor the resistance force of the fixing bolt.

[0017] By adopting the above technical solution, when the transmission system is overloaded, relative sliding (slippage) will occur between the limiting friction plate and the connecting plate and the pressing plate, thereby cutting off the torque transmission and protecting the equipment. The setting of the pressure sensor facilitates direct and accurate monitoring of the actual preload applied by the fixing bolt to the friction pair, realizing real-time monitoring of the wear state of the limiting friction plate and the current effective torque setting value, thereby realizing early warning. By tightening the fixing bolt, it is ensured that the overload protection function is always at the preset threshold, realizing the transformation from periodic replacement to predictive maintenance.

[0018] Optionally, a return spring is provided between the sliding seat and the fixed seat, and the return spring applies a spring force to the sliding seat to perform a return movement.

[0019] By adopting the above technical solution, when the driving component is depressurized, the sliding seat and the connected brake plate can be automatically and reliably pushed away from the rotating component by the elastic force of the return spring. This allows the brake friction pad and the rotating component to quickly restore the preset gap, avoiding the pressure friction between the brake friction pad and the rotating component caused by residual pressure or slight deformation. This eliminates the additional power loss, abnormal heat generation and uneven wear of the brake friction pad, ensuring the service life of the brake.

[0020] Optionally, the fixed base has two parallel fixed shafts, both of which pass through and slide into the sliding base. Two return springs are provided and respectively sleeved on the two fixed shafts. The fixed shafts are threadedly fitted with two fixed limiting nuts. One end of the return spring abuts against the sliding base, and the other end abuts against the limiting nut near the sliding base.

[0021] By adopting the above technical solution, the two parallel fixed shafts provide precise and stable linear guidance for the sliding seat, which helps to ensure the stability of the braking action. At the same time, by turning the two fixed limit nuts, the pre-compression of the return spring can be adjusted, thereby setting the magnitude of the return force to adapt to different working conditions or compensate for elastic loss after long-term use, making it highly applicable.

[0022] Optionally, the brake plate includes a first plate body, a second plate body, and an elastic pad. The elastic pad is located between the first plate body and the second plate body. The second plates of the two brake plates are arranged opposite each other. Two sets of brake friction pads are arranged on one side opposite the two second plates. The first plate body and the second plate body are fastened together by four brake bolts arranged in a rectangular shape. The brake bolts pass through the first plate body and the second plate body in sequence and are locked by nuts.

[0023] By adopting the above technical solution, each brake bolt, which is distributed in a rectangular pattern, can be screwed on to adjust the pressure of the first plate and the second plate on the intermediate elastic pad at the corresponding positions. This allows the second plate to undergo a slight positional adjustment, changing the inclination of the brake friction pad fixed on the second plate. This ensures that the brake friction pad can make uniform contact with the surface of the rotating part during braking, avoiding localized uneven wear and improving braking stability.

[0024] Optionally, a connecting ball is fixedly connected to the side of the first plate facing the second plate, and a ball seat is fixedly connected to the side of the second plate facing the first plate. The connecting ball is engaged and rotated with the ball seat, and the elastic pad has a through hole for avoiding the connecting ball and the ball seat.

[0025] By adopting the above technical solution, the cooperation between the connecting ball and the ball seat allows the second plate to have a definite rotation center, which makes it easy to precisely and directly control the angle adjustment of the second plate and the brake friction pad around the fixed rotation point by rotating the brake bolt, and facilitates more efficient and accurate full contact between the working surface of the friction pad and the rotating part.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. When the generator needs to be inspected and maintained, the rotation of the rotating parts can be directly locked by the brake, blocking the transmission of the coupling. This facilitates the quick fixation of the coupling transmission components, thereby improving maintenance efficiency and safety.

[0028] 2. The gear design facilitates driving via an external drive source, thereby enabling the simulation of impeller transmission conditions and facilitating safe and convenient testing of the coupling during maintenance or commissioning. This improves equipment maintainability, and the larger gear size allows for a more stable braking effect.

[0029] 3. By tightening the rectangularly distributed brake bolts, the pressure of the first and second plates on the intermediate elastic pad at the corresponding positions can be slightly adjusted, causing a slight positional adjustment of the second plate. This changes the inclination of the brake friction pad fixed on the second plate, ensuring that the brake friction pad can make uniform contact with the surface of the rotating parts during braking, avoiding localized uneven wear, and improving braking stability. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0031] Figure 2 This is a schematic diagram of the overall structure from another perspective in Embodiment 1 of this application.

[0032] Figure 3 This is a schematic diagram of the main structure of the limiter in Embodiment 1 of this application.

[0033] Figure 4 This is a partial cross-sectional schematic diagram of the brake in Embodiment 1 of this application.

[0034] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0035] Figure 6 yes Figure 5 A magnified view of part A in the diagram.

[0036] Figure 7 This is a partial cross-sectional schematic diagram of the brake in Embodiment 2 of this application.

[0037] Figure 8 This is a schematic diagram of the main structure of the connecting plate in Embodiment 2 of this application.

[0038] Figure 9 This is a partial cross-sectional schematic diagram of the limiter in Embodiment 2 of this application.

[0039] Figure 10 yes Figure 9 A magnified view of part B in the diagram.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Connecting seat; 2. Insulating cylinder; 3. Error adapter; 31. Steel plate assembly; 311. Spring steel plate; 32. Mounting shaft; 321. Shaft body; 322. Mounting retaining ring; 323. Mounting limit ring; 324. Mounting pressure ring; 325. Stopping head; 326. Mounting bolt; 327. Buffer ring; 4. Coupling part; 41. First coupling part; 42. Second coupling part; 5. Brake; 51. Fixed seat; 511. Fixed shaft; 52. Sliding seat; 53. Driving component; 54. Brake friction pad; 55. Brake plate; 551. First plate body; 552. Second plate body; 553. Elastic pad; 6. 7. Rotating component; 7. Limiter; 71. Connecting plate; 72. Pressing plate; 73. Connecting plate; 74. Fixing bolt; 8. Rotating groove; 9. Mounting groove; 10. Limiting friction plate; 11. Butterfly washer; 12. Braking groove; 13. Return spring; 14. Limiting nut; 15. Sliding positioning ring; 16. Connecting ball; 17. Ball seat; 171. Connecting groove; 18. Clearance hole; 19. Braking bolt; 20. Accommodating groove; 21. Circumferential friction plate; 22. Pressure sensor; 23. Limiting accommodating groove; 24. Limiting slot; 25. Limiting block; 26. Protective cover; 27. Protective slot; 28. Clearance groove. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0043] This application discloses a wind power coupling. Example 1

[0044] Reference Figure 1 The wind power coupling includes a connecting seat 1, an insulating cylinder 2, an error adapter 3, a coupling part 4, and a brake 5. In this embodiment, the insulating cylinder 2 is made of fiberglass to achieve electrical isolation at both ends of the insulating cylinder 2, prevent shaft current corrosion, and ensure the service life of the coupling.

[0045] Reference Figure 1 and Figure 2Two connecting seats 1 are provided and fixedly installed at both ends of the insulating cylinder 2 along its length. Two error adapters 3 are provided and located on opposite sides of the two connecting seats 1. Two coupling parts 4 are provided. In this embodiment, one is defined as a first coupling part 41, which is connected to one of the error adapters 3 via a rotating member 6. The other is defined as a second coupling part 42, which is connected to the other error adapter 3 via a limiter 7. The two coupling parts 4 are used to connect the output shaft of the gearbox and the input shaft of the generator to form a complete torque transmission path.

[0046] Continue to refer to Figure 1 and Figure 2 Specifically, the error adapter 3 includes four sets of steel sheet groups 31 and four sets of mounting shafts 32, which are evenly distributed circumferentially around the axis of the insulating cylinder 2. Each set of steel sheet groups 31 includes multiple layers of stacked spring steel sheets 311. In this embodiment, the number of spring steel sheets 311 in each set is four. One end of each spring steel sheet 311 in each set is rotatably connected to one of the mounting shafts 32, and the other end is rotatably connected to an adjacent mounting shaft 32, thereby forming a parallelogram mechanism with a certain amount of elastic deformation.

[0047] Reference Figure 1 For the error adapter 3 connected to the rotating component 6, two of its four sets of mounting shafts 32, which are radially opposite, are fixed to the connecting seat 1, while the other two sets of mounting shafts 32 are fixedly connected to the rotating component 6. For the error adapter 3 connected to the limiter 7, two of its four sets of mounting shafts 32, which are radially opposite, are fixed to the connecting seat 1, while the other two sets of mounting shafts 32 are fixedly connected to the limiter 7. Through the coordinated deformation of multiple sets of steel sheet groups 31 in the circumferential direction, the alignment error can be effectively absorbed and compensated, reducing the additional stress caused by misalignment in the transmission chain, and ensuring the balance and stability during torque transmission.

[0048] Reference Figure 1 and Figure 2Furthermore, the mounting shaft 32 includes a shaft body 321, a mounting fixing ring 322, a mounting limiting ring 323, and a mounting pressing ring 324. The shaft body 321 passes through and rotatably engages with the ends of the spring steel plates 311 of the two sets of steel plate groups 31. A blocking head 325 is fixedly provided at one end of the shaft body 321 fixed to the connecting seat 1. Two mounting limiting rings 323 are provided and respectively press against the opposite sides of the two sets of steel plate groups 31. One end of the mounting limiting ring 323 abuts against the blocking head 325, and the other end of the mounting limiting ring 323 abuts against one side of the connecting seat 1. Both the mounting pressure ring 324 and the mounting fixing ring 322 are disposed on the shaft body 321 and located on the side of the connecting seat 1 away from the mounting limit ring 323. The mounting pressure ring 324 is movably sleeved on the shaft body 321 and one end presses against the connecting seat 1. The mounting fixing ring 322 is fixedly installed on the shaft body 321 and is provided with a plurality of mounting bolts 326 that are evenly distributed circumferentially around its own axis and radially arranged. Each mounting bolt 326 is threaded into the mounting fixing ring 322, and one end of each mounting bolt 326 presses against the mounting pressure ring 324, so that by tightening the mounting bolts 326, a controllable axial clamping force can be applied to the entire steel sheet assembly 31 disposed on the connecting seat 1 through the mounting limit ring 323.

[0049] Reference Figure 2 The rotating component 6 has two rotating grooves 8, which correspond to the blocking heads 325 fixed to one end of the shaft 321 of the connecting seat 1, respectively, so as to allow the blocking heads 325 fixed to one end of the shaft 321 of the connecting seat 1 to rotate. The blocking heads 325 fixed to one end of the shaft 321 of the rotating component 6 or the limiter 7 are located on one side of the rotating component 6 or the limiter 7, and the other components of the shaft 321 are located on the other side of the rotating component 6 or the limiter 7.

[0050] Reference Figure 1 and Figure 2Specifically, a buffer ring 327 is movably fitted outside the shaft 321, with one end of the buffer ring 327 abutting against the rotating component 6 or the limiter 7. Two mounting limit rings 323 are provided and press against the opposite sides of the two steel plate assemblies 31 respectively. One end of the mounting limit ring 323 abuts against the buffer ring 327, and the other end of the mounting limit ring 323 abuts against one end of the mounting pressure ring 324. The mounting pressure ring 324 is movably fitted onto the shaft 321. The mounting fixing ring 322 is fixedly installed on the shaft 321 and is provided with a plurality of mounting bolts 326 that are evenly distributed circumferentially around its own axis and radially arranged. Each mounting bolt 326 is threaded into the mounting fixing ring 322, and one end of each mounting bolt 326 presses against the mounting pressure ring 324, so that by tightening the mounting bolts 326, a controllable axial clamping force can be applied precisely and evenly through the mounting limit ring 323 to the entire steel plate assembly 31 set on the rotating component 6 or the limiter 7. The multiple mounting bolts 326 facilitate individual fine-tuning of the local preload of the steel sheet assembly 31 to adapt to different usage scenarios or to adjust according to performance changes after long-term use.

[0051] Reference Figure 3 The limiter 7 includes a coaxially arranged connecting plate 71, a pressing plate 72, and a connecting plate 73. The connecting plate 71 has a mounting groove 9 facing the pressing plate 72, and the connecting plate 73 is installed within the mounting groove 9. The second coupling part 42 is coaxially and fixedly connected to the connecting plate 73. Limiting friction plates 10 are fixedly installed on both sides of the connecting plate 73 along its axial direction; that is, limiting friction plates 10 are fixedly installed on the side of the connecting plate 73 facing the connecting plate 71 and the pressing plate 72. The connecting plate 71 and the pressing plate 72 are fastened together by circumferentially evenly distributed fixing bolts 74. Each fixing bolt 74 passes through the pressing plate 72 and the connecting plate 71 in sequence and is locked with a nut. When the transmission system is overloaded, relative sliding (slippage) will occur between the limiting friction plates 10 and the connecting plate 71 and the pressing plate 72, thereby cutting off torque transmission and protecting the equipment.

[0052] Reference Figure 1 and Figure 3 Each fixing bolt 74 has two butterfly washers 11 on the side of the bolt head facing the pressing plate 72. The butterfly washers 11 are fitted onto the threaded part of the fixing bolt 74 to compensate for the preload fluctuation caused by vibration, temperature difference or slight wear during operation through the elastic characteristics of the butterfly washers 11, and maintain the relative stability of the clamping force of the friction pair.

[0053] Reference Figure 2 In this embodiment, the rotating component 6 includes a gear with a diameter larger than the outer diameter of the insulating cylinder 2. This allows the gear to be driven to rotate by an external drive source before the impeller is disconnected or installed, thereby simulating the transmission conditions of the impeller and enabling safe and convenient testing of the coupling during maintenance or debugging, thus improving the maintainability of the equipment.

[0054] Reference Figure 2 and Figure 4 The brake 5 is used to brake or release the rotating part 6. Specifically, the brake 5 includes a fixed seat 51, a sliding seat 52, a driving part 53, and a brake friction pad 54. The fixed seat 51 is fixed to the wind turbine generator set (not shown in the figure) by bolts. The sliding seat 52 is slidably engaged with the fixed seat 51. Specifically, the fixed seat 51 has two parallel fixed shafts 511. Both fixed shafts 511 pass through and are slidably engaged with the sliding seat 52 to ensure the stability of the sliding seat 52 when it slides.

[0055] Reference Figure 4 The sliding seat 52 has a brake groove 12 on its top, and a portion of the gear is located within the brake groove 12. The sliding seat 52 is provided with two brake plates 55, which are located on both sides of the gear. Two sets of brake friction pads 54 are provided and are respectively located on the side of the two brake plates 55 that are close to each other. In this embodiment, each set of brake friction pads 54 is arranged in five rows along the vertical direction, and multiple brake friction pads 54 are evenly distributed along the length of the surface in each row. In this embodiment, the driving component 53 includes a hydraulic cylinder disposed on the sliding seat 52, wherein one brake plate 55 is fixedly installed on the output end of the hydraulic cylinder so that the hydraulic cylinder drives one brake plate 55 to move toward or away from the gear, and the other brake plate 55 is fixedly installed on the sliding seat 52.

[0056] When the hydraulic cylinder directly pushes one of the brake plates 55 to move, the brake friction pad 54 mounted on the brake plate 55 presses against the gear. After the brake plate 55 presses against the gear, the sliding seat 52 slides on the fixed seat 51 under the reaction force of the gear. This causes the brake plate 55 and its brake friction pad 54, which are fixed to the sliding seat 52, to press against the gear from the other side, thereby achieving clamping and braking of the gear from both sides. Achieving the centered clamping and braking of the gear with the brake plates 55 on both sides only requires a single hydraulic cylinder to drive the brake plate 55, resulting in a compact structure and high braking efficiency.

[0057] The implementation principle of Embodiment 1 of this application is as follows: During operation, the wind power coupling achieves electrical isolation during transmission through the insulating cylinder 2, which helps to prevent shaft current corrosion and ensure the service life of the coupling; when the generator needs to be inspected and maintained, the rotation of the rotating part 6 can be directly locked by the two brake plates 55 of the brake 5, blocking the transmission of the coupling, that is, it is convenient to quickly fix the transmission components of the coupling, thereby improving maintenance efficiency and safety. Example 2

[0058] Reference Figure 5 and Figure 6The main difference between this embodiment and Embodiment 1 is that, in this embodiment, two return springs 13 are further provided between the sliding seat 52 and the fixed seat 51, and the two return springs 13 are respectively sleeved on the two fixed shafts 511. Both fixed shafts 511 are threadedly fitted with two fixed limiting nuts 14. One end of the return spring 13 abuts against the sliding seat 52, and the other end abuts against the limiting nut 14 near the sliding seat 52, so that the return spring 13 applies a spring force to the sliding seat 52 for a reset movement. Furthermore, by tightening the two fixed limiting nuts 14, the pre-compression of the return spring 13 can be adjusted, thereby facilitating the adjustment of the reset force, adapting to different working conditions or compensating for elastic loss after long-term use, thus exhibiting strong applicability. To facilitate the stable reset of the sliding seat 52 to its initial position, a sliding positioning ring 15 is fixedly connected to the fixed shaft 511. Under normal conditions, the sliding seat 52 is pressed against the sliding positioning ring 15 by the spring force of the return spring 13.

[0059] Reference Figure 7 Furthermore, in this embodiment, the brake plate 55 specifically includes a first plate 551, a second plate 552, and an elastic pad 553. A connecting ball 16 is fixedly connected to the side of the first plate 551 facing the second plate 552, and an elastic ball seat 17 is fixedly connected to the side of the second plate 552 facing the first plate 551. The ball seat 17 has a connecting groove 171, and the connecting ball 16 engages and rotates within the connecting groove 171 of the ball seat 17, so that the second plate 552 is spherically hinged to the first plate 551. The elastic pad 553 has a through hole 18 for avoiding interference between the connecting ball 16 and the ball seat 17, so that the elastic pad 553 does not easily interfere with the connecting ball 16 and the ball seat 17. In this embodiment, the elastic pad 553 is made of high-temperature resistant rubber.

[0060] Reference Figure 6 and Figure 7 An elastic pad 553 is located between the first plate 551 and the second plate 552. The second plates 552 of the two brake plates 55 are positioned opposite each other, and two sets of brake friction pads 54 are respectively positioned on the opposite side of the two second plates 552. The first plate 551 and the second plate 552 are fastened together by four brake bolts 19 arranged in a rectangular pattern. Each brake bolt 19 passes through the first plate 551 and the second plate 552 in sequence and is locked with a nut. Each second plate 552 has a receiving groove 20 on the side away from the first plate 551, which corresponds to each nut, so that the tightening of the brake bolts 19 and nuts does not easily affect the braking performance of the brake friction pads 54. By rotating the brake bolts 19, the angle of the second plate 552 and the brake friction pads 54 can be precisely and directly adjusted around a fixed rotation point, which facilitates more efficient and accurate full contact between the working surface of the brake friction pads 54 and the gear.

[0061] Reference Figure 8 and Figure 9Furthermore, in the structure of the limiter 7, a circumferential friction plate 21 is fixedly installed on the outer peripheral surface of the connecting plate 73 in this embodiment. Multiple circumferential friction plates 21 are evenly distributed around the axis of the connecting plate 73. In this embodiment, three circumferential friction plates 21 are selected, and the three circumferential friction plates 21 are connected end-to-end in a ring around the axis of the connecting plate 73. This further distributes the torque required to be transmitted by the axial friction pair through the circumferential friction plates 21, facilitating an improvement in the overall torque transmission capacity without increasing the structural size of the connecting plate 73.

[0062] Reference Figure 9 and Figure 10 In this embodiment, a pressure sensor 22 is also provided between the bolt head of some fixing bolts 74 and the pressing plate 72. In this embodiment, two fixing bolts 74 are spaced apart between two adjacent pressure sensors 22. The pressure sensor 22 is used to monitor the pressure of the fixing bolts 74. A limiting receiving groove 23 corresponding to the pressure sensor 22 and adapted to the cross-sectional shape of the pressure sensor 22 is provided on the side of the pressing plate 72 facing the pressure sensor 22. The free end of the pressure sensor 22 near the pressing plate 72 is located in the limiting receiving groove 23. Both butterfly washers 11 are located on the side of the pressure sensor 22 away from the pressing plate 72.

[0063] The pressure sensor 22 is set up to facilitate direct and accurate monitoring of the actual preload applied by the fixing bolt 74 to the friction pair, thereby enabling real-time monitoring of the wear state of the limiting friction plate 10 and the current effective torque setting value, thus achieving early warning. By tightening the fixing bolt 74, the overload protection function is always kept at the preset threshold, realizing the transformation from periodic replacement to predictive maintenance.

[0064] Reference Figure 10 To ensure the stability of the position of the pressure sensor 22, a limiting block 25 is fixedly connected to the outer peripheral surface of the pressure sensor 22. A limiting groove 24 is opened in the groove wall of the limiting receiving groove 23. The limiting groove 24 extends to the opening of the limiting receiving groove 23. The limiting block 25 slides and engages with the limiting groove 24 to limit the rotation of the axis of the pressure sensor 22 through the cooperation of the limiting block 25 and the limiting groove 24.

[0065] Reference Figure 9 and Figure 10The pressure plate 72 is also provided with protective covers 26 corresponding to the pressure sensors 22. Each protective cover 26 covers the fixing bolts 74, the butterfly washers 11, and the pressure sensors 22. The protective covers 26 are elastic. In this embodiment, the material of the protective covers 26 is rubber. The inner bottom wall of the protective cover 26 has a protective groove 27 that is adapted to the shape of the bolt head of the fixing bolt 74 and engages with it, so as to facilitate the stable installation and removal of the protective cover 26 quickly. The side wall of the protective cover 26 has a through groove 28 that corresponds to the interface of the pressure sensor 22, so as to facilitate the connection between the pressure sensor 22 and external components through the groove 28.

[0066] The implementation principle of Embodiment 2 of this application is the same as that of Embodiment 1, and will not be repeated here.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A windmill coupling, characterized in that: The device includes a connecting seat (1), an insulating cylinder (2), an error adapter (3), a coupling part (4), and a brake (5). There are two connecting seats (1) installed at both ends of the insulating cylinder (2). There are two error adapters (3) located on opposite sides of the two connecting seats (1). There are two coupling parts (4) located on opposite sides of the two error adapters (3). The two coupling parts (4) are used to connect the gearbox output shaft and the generator input shaft, respectively. One of the coupling parts (4) is connected to the error adapter (3) through a rotating part (6). The brake (5) is used to brake or release the rotating part (6). The brake (5) includes a fixed seat (51), a sliding seat (52), a driving member (53), and brake friction pads (54). The fixed seat (51) is fixedly installed, and the sliding seat (52) is slidably fitted to the fixed seat (51). The top of the sliding seat (52) is provided with a brake groove (12). The rotating member (6) is partially located in the brake groove (12). The sliding seat (52) is provided with two brake plates (55). The two brake plates (55) are respectively located on both sides of the rotating member (6). The brake friction pads (54) are provided in two sets and are respectively located on the side of the two brake plates (55) that are close to each other. The driving member (53) is provided on the sliding seat (52) and is used to drive one of the brake plates (55) to move towards the rotating member (6). The other brake plate (55) is fixedly installed on the sliding seat (52). Another coupling (4) is connected to the error adapter (3) via a limiter (7). The error adapter (3) includes four sets of steel plates (31) and four sets of mounting shafts (32). The four sets of mounting shafts (32) are evenly distributed around the axis of the insulating cylinder (2). One end of each set of steel plates (31) is rotatably connected to one of the mounting shafts (32), and the other end is rotatably connected to the adjacent mounting shaft (32). Among the four sets of mounting shafts (32) of the error adapter (3) connected to the rotating part (6), two sets of mounting shafts (32) that are radially opposite are fixedly connected to the connecting seat (1), and the other two sets of mounting shafts (32) are fixedly connected to the rotating part (6). Among the four sets of mounting shafts (32) of the error adapter (3) connected to the limiter (7), two sets of mounting shafts (32) that are radially opposite are fixedly connected to the connecting seat (1), and the other two sets of mounting shafts (32) are connected to the limiter (7). The limiter (7) includes a connecting plate (71), a pressing plate (72), and a connecting plate (73) arranged coaxially. The connecting plate (73) is located between the connecting plate (71) and the pressing plate (72). One of the coupling parts (4) is coaxially fixedly connected to the connecting plate (73). Limiting friction plates (10) are fixedly installed on the side of the connecting plate (73) facing the connecting plate (71) and the pressing plate (72). The connecting plate (71) and the pressing plate (72) are fastened together by circumferentially distributed fixing bolts (74). The fixing bolts (74) pass through the pressing plate (72) and the connecting plate (71) in sequence and are locked by nuts. A pressure sensor (22) is provided between the bolt head of the fixing bolt (74) and the pressing plate (72). The pressure sensor (22) is used to monitor the resistance of the fixing bolt (74). The pressure plate (72) has a limiting receiving groove (23) on the side facing the pressure sensor (22) that corresponds to the pressure sensor (22) and is adapted to the cross-sectional shape of the pressure sensor (22). The free end of the pressure sensor (22) near the pressure plate (72) is located in the limiting receiving groove (23). A limiting block (25) is fixedly connected to the outer peripheral surface of the pressure sensor (22). A limiting groove (24) is opened in the groove wall of the limiting receiving groove (23). The limiting groove (24) extends to the opening of the limiting receiving groove (23). The limiting block (25) slides and engages with the limiting groove (24).

2. A wind power coupling according to claim 1, characterized in that: The rotating component (6) includes a gear, the diameter of which is greater than the outer diameter of the insulating cylinder (2).

3. A wind power coupling according to claim 1, characterized in that: The mounting shaft (32) includes a shaft body (321), a mounting fixing ring (322), a mounting limiting ring (323), and a mounting pressing ring (324). The shaft body (321) passes through and rotatably engages with the ends of two sets of steel sheet groups (31). Two mounting limiting rings (323) are provided and press against the opposite sides of the two sets of steel sheet groups (31). The mounting fixing ring (322) is fixedly installed on the shaft body (321), and the mounting pressing ring (324)... The mounting ring (322) is located on the side of one of the mounting limiting rings (323) away from the other mounting limiting ring (323). The mounting fixing ring (322) is provided with a plurality of mounting bolts (326) that are evenly distributed circumferentially around its own axis and arranged radially. Each mounting bolt (326) is threaded into the mounting fixing ring (322), and one end of each mounting bolt (326) abuts against the mounting pressure ring (324). The mounting pressure ring (324) is movably sleeved on the shaft (321).

4. The windmill coupling according to claim 1, wherein: A return spring (13) is provided between the sliding seat (52) and the fixed seat (51), and the return spring (13) applies a spring force to the sliding seat (52) to perform a return movement.

5. A wind power coupling according to claim 4, characterized in that: The fixed base (51) has two parallel fixed shafts (511), both of which are inserted through and slidably fitted into the sliding base (52). Two return springs (13) are provided and respectively sleeved on the two fixed shafts (511). The fixed shafts (511) are threadedly fitted with two fixed limiting nuts (14). One end of the return spring (13) abuts against the sliding base (52) and the other end abuts against the limiting nut (14) near the sliding base (52).

6. A wind power coupling according to claim 1, characterized in that: The brake plate (55) includes a first plate (551), a second plate (552), and an elastic pad (553). The elastic pad (553) is located between the first plate (551) and the second plate (552). The second plates (552) of the two brake plates (55) are arranged opposite each other. Two sets of brake friction pads (54) are arranged on one side opposite to the two second plates (552). The first plate (551) and the second plate (552) are fastened together by four brake bolts (19) arranged in a rectangular shape. The brake bolts (19) pass through the first plate (551) and the second plate (552) in sequence and are locked by nuts.

7. A wind power coupling according to claim 6, characterized in that: A connecting ball (16) is fixedly connected to the side of the first plate (551) facing the second plate (552), and a ball seat (17) is fixedly connected to the side of the second plate (552) facing the first plate (551). The connecting ball (16) is engaged with and rotated in the ball seat (17). The elastic pad (553) has a through hole (18) for avoiding the connecting ball (16) and the ball seat (17).

Images