Yaw braking torque lifting device of wind generating set

Abstract

The invention discloses a wind generating set yaw braking torque lifting device, and relates to the technical field of wind generating set yaw braking, the wind generating set yaw braking torque lifting device comprises a machine body, a braking mechanism is arranged in the machine body, and a limiting mechanism is arranged in the braking mechanism; the limiting mechanism comprises a bearing assembly and an adjusting assembly, and the adjusting assembly is arranged in the bearing assembly. A braking mode of unloading force first and then positioning is adopted, through cooperation of friction plate unloading force and limiting block positioning, it is ensured that braking is accurate and stable, adjustability is high, a user can install different numbers of limiting blocks and friction plates according to actual requirements, various working conditions are adapted, the rubber material of the buffering assembly protects equipment and can automatically replace damaged rubber sheets, and the service life of the buffering assembly is prolonged. The service life is prolonged, and safe and stable operation of a wind power generation system is powerfully guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of yaw braking of a wind turbine generator set, and in particular to a yaw braking torque increasing device for a wind turbine generator set. Background Art

[0002] In today's energy field, wind power generation, as a clean and renewable form of energy, has been widely used and developed rapidly. As the core equipment of wind power generation, the performance and reliability of wind turbines are directly related to the efficiency and stability of the entire wind power generation system. In wind turbines, the yaw system plays a vital role. It can adjust the direction of the wind turbine according to the change of wind direction, so that the impeller of the wind turbine is always aligned with the wind direction, thereby maximizing the capture of wind energy and improving power generation efficiency. However, in actual operation, the existing yaw system of wind turbines often faces the problem of insufficient braking torque. When encountering strong winds, complex terrain or other harsh working conditions, the yaw system needs to have sufficient braking torque to ensure the stable operation of the wind turbine and accurate alignment with the wind direction. If the braking torque is insufficient, the wind turbine may shake, deviate or even lose control during the yaw process, which will not only affect the power generation efficiency, but also pose a serious threat to the structural safety of the wind turbine. In addition, with the long-term operation of the wind turbine, factors such as equipment wear, aging and changes in the external environment will also cause the yaw braking torque to gradually decrease, further exacerbating the instability of the system.

[0003] In order to solve this problem, the present invention proposes a device for improving the yaw braking torque of a wind turbine. The device can effectively improve the yaw braking torque through a unique structural design and an innovative braking method, ensuring that the wind turbine can operate stably under various working conditions. Specifically, the device includes a body, in which a braking mechanism and a limiting mechanism are arranged. The connecting column, the bearing cylinder, the limiting block, the friction plate and other components in the limiting mechanism cooperate with each other to realize a braking method of first unloading and then positioning, providing an adaptation process for the driving part, and improving the accuracy and stability of the braking. At the same time, the buffer component in the braking mechanism is made of rubber material, which will not cause damage to the contact object, but can generate a large friction force, and can be automatically replaced when the rubber sheet is damaged, thereby extending the service life of the device. In addition, the device also has the characteristics of strong adjustability, and the user can install different numbers of limiting blocks and friction plates according to actual needs to adapt to different wind turbines and working environments. Through the effective braking and positioning of the bearing, the device can ensure the safety and stability of the entire wind turbine during the yaw process, providing strong technical support for the sustainable development of the wind power industry. Summary of the invention

[0004] An object of the present invention is to provide a yaw braking torque enhancement device for a wind turbine generator set to solve at least any one of the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a yaw braking torque boosting device for a wind turbine generator set, comprising a machine body, a braking mechanism is arranged in the machine body, and a limiting mechanism is arranged in the braking mechanism;

[0006] The limiting mechanism comprises a bearing assembly and an adjusting assembly, and the adjusting assembly is arranged in the bearing assembly;

[0007] The adjustment component includes a connecting column, multiple bearing tubes, multiple limit blocks, multiple friction plates, multiple threaded rings and multiple telescopic cylinders. The multiple threaded rings are evenly distributed on the connecting column, and the multiple threaded rings are detachably connected to the connecting column. One ends of the multiple bearing tubes are respectively threadedly connected to the multiple threaded rings. The multiple telescopic cylinders are respectively arranged in the multiple bearing tubes. The fixed ends of the multiple telescopic cylinders are respectively detachably connected to the multiple bearing tubes. The multiple limit blocks and the multiple friction plates are respectively detachably connected to the movable ends of the multiple telescopic cylinders.

[0008] Preferably, the supporting assembly includes a positioning frame, a connecting plate, a slot, a plurality of first openings, a plurality of second openings and a plurality of partitions, the positioning frame is detachably connected to the top of the connecting plate, a plurality of the first openings and a plurality of the second openings are all opened on the positioning frame, the slot is opened on the top of the connecting plate, the positioning frame is arranged in the slot, a plurality of the partitions are evenly distributed on the positioning frame, and a plurality of the partitions are all detachably connected to the positioning frame.

[0009] Preferably, the connecting column is arranged on the inner side of the positioning frame, the plurality of supporting tubes are detachably connected to the positioning frame, the movable ends of the plurality of telescopic cylinders are connected to the positioning frame, and the plurality of limit blocks and the plurality of friction plates are respectively arranged between the plurality of partitions.

[0010] Preferably, the braking mechanism comprises a positioning assembly and a plurality of buffer assemblies, and the plurality of buffer assemblies are all arranged in the positioning assembly;

[0011] The positioning assembly includes a brake ring and a plurality of positioning grooves, and the plurality of positioning grooves are all arranged on the inner side of the brake ring.

[0012] Preferably, the plurality of buffer components each include a rubber shell, a top plate, a spring sheet, a connecting plate and a plurality of rubber sheets, the plurality of rubber sheets are evenly distributed in the rubber shell, the top plate is arranged in the rubber shell, the top plate includes a resisting portion, the resisting portion resists against the plurality of rubber sheets, the connecting plate is detachably connected to the rubber shell, the spring sheet is arranged between the top plate and the connecting plate, and the spring sheet resists against the top plate and the connecting plate.

[0013] Preferably, the plurality of rubber shells are evenly distributed on the inner side of the brake ring, the plurality of rubber shells are staggered with the plurality of positioning grooves, and the plurality of connecting plates are detachably connected to the brake ring.

[0014] Preferably, a bearing is detachably connected to the body.

[0015] Preferably, the brake ring is arranged on the inner side of the bearing and is detachably connected to the movable end of the bearing, the limiting mechanism is arranged on the inner side of the brake ring, the connecting plate is detachably connected to the body and the fixed end of the bearing, and the movable end of the bearing is arranged in the slot.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. Accurate and efficient braking and positioning

[0018] The yaw braking torque boosting device of the wind turbine generator set realizes a unique braking method of unloading force first and then positioning through the ingenious design of the limit mechanism. The friction plate first contacts the braking mechanism to provide friction for unloading force, which provides a smooth adaptation stage for the braking process of the drive component. Then, the limit block and the braking mechanism work closely together to achieve precise positioning, which greatly improves the control accuracy of the yaw braking torque. The multiple positioning grooves are perfectly matched with the shape of the limit blocks, further ensuring the stability of the braking positioning, so that the wind turbine generator set can accurately stay in the required position during the yaw process, effectively improving the wind energy capture efficiency.

[0019] 2. Height adjustable to meet different needs

[0020] Users can flexibly install different numbers of limit blocks and friction plates according to the actual wind turbine model, working environment and specific braking requirements. This adjustability gives the device strong versatility and practicality, and can meet the braking needs under various complex working conditions. Whether in strong wind areas or special terrain conditions, the best braking effect can be achieved by adjusting the device parameters, providing reliable guarantee for the stable operation of wind turbines.

[0021] 3. Comprehensively protect equipment and extend service life

[0022] The design of the buffer component is unique. The combination of the rubber shell and the rubber sheet fully utilizes the flexibility of the rubber material when it comes into contact with the friction plate to generate friction. It will not cause any damage to the contact object, but can generate sufficient friction to ensure the braking effect while protecting the key components of the equipment. Moreover, when the frontmost rubber sheet is damaged, the spring will quickly contact the top plate and automatically push out the next rubber sheet to continue working. This intelligent replacement mechanism greatly extends the service life of the device, reduces maintenance costs, and improves the overall economic benefits of the wind turbine.

[0023] 4. Effectively ensure bearing braking and system stability

[0024] When the braking mechanism and the limiting mechanism contact each other, they can effectively limit the movement between the movable end and the fixed end of the bearing, realize precise braking and positioning of the bearing, and then complete the braking and positioning of the entire wind turbine by braking the bearing, which greatly improves the safety and stability of the wind turbine during the yaw process. Whether facing sudden strong winds or various changes in long-term operation, the device can provide solid braking protection for the wind turbine and ensure the reliable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the brake ring structure of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the bearing part of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the connection plate of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the rubber shell of the present invention;

[0030] Figure 6 It is a schematic diagram of the partial structure of the rubber sheet of the present invention;

[0031] Figure 7 It is a partial structural schematic diagram of the telescopic cylinder of the present invention;

[0032] Figure 8 It is a partial structural schematic diagram of the positioning frame of the present invention.

[0033] In the figure: 1. body; 2. bearing; 3. brake ring; 4. connecting column; 5. positioning groove; 6. rubber shell; 7. positioning frame; 8. connecting plate; 9. bearing tube; 10. slot; 11. limit block; 12. friction plate; 13. threaded ring; 14. telescopic cylinder; 15. first opening; 16. second opening; 17. rubber sheet; 18. top plate; 19. spring; 20. connecting plate; 21. partition. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides Figure 1-8 A yaw braking torque boosting device for a wind turbine generator set is shown, comprising a machine body 1, a braking mechanism is arranged in the machine body 1, and a limiting mechanism is arranged in the braking mechanism;

[0036] The limiting mechanism includes a bearing assembly and an adjusting assembly, and the adjusting assembly is arranged inside the bearing assembly;

[0037] The body 1 includes the necessary components of the device and is common knowledge.

[0038] The adjustment component includes a connecting column 4, multiple bearing tubes 9, multiple limit blocks 11, multiple friction plates 12, multiple threaded rings 13 and multiple telescopic cylinders 14. The multiple threaded rings 13 are evenly distributed on the connecting column 4, and the multiple threaded rings 13 are detachably connected to the connecting column 4. One ends of the multiple bearing tubes 9 are respectively threadedly connected to the multiple threaded rings 13, and the multiple telescopic cylinders 14 are respectively arranged in the multiple bearing tubes 9. The fixed ends of the multiple telescopic cylinders 14 are respectively detachably connected to the multiple bearing tubes 9, and the multiple limit blocks 11 and the multiple friction plates 12 are respectively detachably connected to the movable ends of the multiple telescopic cylinders 14.

[0039] The telescopic cylinder 14 can be loaded and connected by the connecting column 4 in cooperation with the bearing tube 9. The threaded connection is assisted by the threaded ring 13, which facilitates the disassembly and assembly of the bearing tube 9. The telescopic cylinder used to connect the friction plate 12 is located relatively far behind the telescopic cylinder 14 used to connect the limit block 11 in the bearing tube 9. The user can use the controller to control the telescopic cylinder 14 so that the limit block 11 and the friction plate 12 assist the braking mechanism to complete the braking. The friction plate 12 is the part that contacts before the braking mechanism, and can provide friction to unload the activity of the device. Then the limit block 11 will contact the braking mechanism to achieve the positioning of the activity of the device in cooperation with the braking mechanism. In summary, the device is a method of unloading the force first and then positioning. The friction force can unload the power and then position it. This can achieve an adaptation process for the driving part. The user can install different numbers of limit blocks 11 and friction plates 12 according to needs, which has achieved better braking and brought convenience to the user. The above-mentioned electrical appliance is controlled by the controller, and the user can set it according to the situation. The specific use method and effect are common knowledge.

[0040] The bearing assembly includes a positioning frame 7, a connecting plate 8, a slot 10, a plurality of first openings 15, a plurality of second openings 16 and a plurality of partitions 21. The positioning frame 7 is detachably connected to the top of the connecting plate 8. The plurality of first openings 15 and the plurality of second openings 16 are all provided on the positioning frame 7. The slot 10 is provided on the top of the connecting plate 8. The positioning frame 7 is arranged in the slot 10. The plurality of partitions 21 are evenly distributed on the positioning frame 7. The plurality of partitions 21 are all detachably connected to the positioning frame 7.

[0041] Through the design of the positioning frame 7, it is possible to achieve connection with the adjustment component while ensuring the stability of the movement of the adjustment component. Through the design of the first opening 15 and the second opening 16, which are the parts through which the limit block 11 and the friction plate 12 pass respectively, with the assistance of the partition plate 21, it is possible to contact the limit block 11 and the friction plate 12 when they are moving, and at the same time, the running trajectories of the two are limited to ensure the stable operation of the two, which brings convenience to the user.

[0042] The connecting column 4 is arranged on the inner side of the positioning frame 7, the multiple bearing tubes 9 are detachably connected to the positioning frame 7, the movable ends of the multiple telescopic cylinders 14 are connected to the positioning frame 7, and the multiple limit blocks 11 and the multiple friction plates 12 are respectively arranged between the multiple partitions 21.

[0043] The braking mechanism includes a positioning assembly and a plurality of buffer assemblies, and the plurality of buffer assemblies are arranged in the positioning assembly;

[0044] The positioning assembly includes a brake ring 3 and a plurality of positioning grooves 5 , and the plurality of positioning grooves 5 are all arranged on the inner side of the brake ring 3 .

[0045] The design of the multiple positioning grooves 5 can be matched with the multiple limiting blocks 11, and the shapes of the two are adapted to achieve stable positioning.

[0046] Multiple buffer components all include a rubber shell 6, a top plate 18, a spring sheet 19, a connecting plate 20 and multiple rubber sheets 17. The multiple rubber sheets 17 are evenly distributed in the rubber shell 6. The top plate 18 is arranged in the rubber shell 6. The top plate 18 includes a resistance portion, which resists the multiple rubber sheets 17. The connecting plate 20 is detachably connected to the rubber shell 6. The spring sheet 19 is arranged between the top plate 18 and the connecting plate 20, and the spring sheet 19 resists the top plate 18 and the connecting plate 20.

[0047] The rubber material can be a flexible material, which will not cause damage to the contact object while generating greater friction thereon. The buffer component is the part that directly contacts the friction plate 12 to generate friction. When the two are in contact and generate friction, the rubber shell 6 cooperates with the connecting plate 20 to support the part inside it. The rubber sheet 17 supported at the front end of the rubber shell 6 will contact the friction plate 12. When it is damaged, the spring sheet 19 will contact the top plate 18 to push out the next rubber sheet 17 at the corresponding position, replacing the new rubber sheet 17 to contact the friction plate 12 to generate friction.

[0048] The plurality of rubber shells 6 are evenly distributed on the inner side of the brake ring 3 , the plurality of rubber shells 6 are staggered with the plurality of positioning grooves 5 , and the plurality of connecting plates 20 are detachably connected to the brake ring 3 .

[0049] A bearing 2 is detachably connected to the body 1 .

[0050] The brake ring 3 is arranged on the inner side of the bearing 2 and is detachably connected to the movable end of the bearing 2. The limiting mechanism is arranged on the inner side of the brake ring 3. The connecting plate 8 is detachably connected to the body 1 and the fixed end of the bearing 2. The movable end of the bearing 2 is arranged in the slot 10.

[0051] Through the above connection, when the braking mechanism is not in contact with the limiting mechanism, the bearing 2 is not braked and moves smoothly. However, when the braking mechanism is in contact with the limiting mechanism to achieve braking, the movement between the movable end and the fixed end of the bearing 2 will be limited, thereby completing the braking positioning of the bearing 2, and also achieving the braking positioning of the device, which brings convenience to the user.

[0052] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A yaw braking torque boosting device for a wind turbine generator set, characterized in that: It comprises a machine body (1), wherein a braking mechanism is arranged in the machine body (1), and a limiting mechanism is arranged in the braking mechanism; The limiting mechanism comprises a bearing assembly and an adjusting assembly, and the adjusting assembly is arranged in the bearing assembly; The adjustment component comprises a connecting column (4), a plurality of bearing tubes (9), a plurality of limiting blocks (11), a plurality of friction plates (12), a plurality of threaded rings (13) and a plurality of telescopic cylinders (14); the plurality of threaded rings (13) are evenly distributed on the connecting column (4); the plurality of threaded rings (13) are detachably connected to the connecting column (4); one end of the plurality of bearing tubes (9) are respectively threadedly connected to the plurality of threaded rings (13); the plurality of telescopic cylinders (14) are respectively arranged in the plurality of bearing tubes (9); the fixed ends of the plurality of telescopic cylinders (14) are respectively detachably connected to the plurality of bearing tubes (9); the plurality of limiting blocks (11) and the plurality of friction plates (12) are respectively detachably connected to the movable ends of the plurality of telescopic cylinders (14).

2. The yaw braking torque boosting device for a wind turbine generator set according to claim 1, characterized in that: The bearing assembly comprises a positioning frame (7), a connecting plate (8), a slot (10), a plurality of first openings (15), a plurality of second openings (16) and a plurality of partitions (21); the positioning frame (7) is detachably connected to the top of the connecting plate (8); the plurality of first openings (15) and the plurality of second openings (16) are all provided on the positioning frame (7); the slot (10) is provided on the top of the connecting plate (8); the positioning frame (7) is arranged in the slot (10); the plurality of partitions (21) are evenly distributed on the positioning frame (7); and the plurality of partitions (21) are all detachably connected to the positioning frame (7).

3. The yaw braking torque boosting device for a wind turbine generator set according to claim 2, characterized in that: The connecting column (4) is arranged on the inner side of the positioning frame (7), the plurality of bearing tubes (9) are detachably connected to the positioning frame (7), the movable ends of the plurality of telescopic cylinders (14) are connected to the positioning frame (7), and the plurality of limit blocks (11) and the plurality of friction plates (12) are respectively arranged between the plurality of partitions (21).

4. The yaw braking torque enhancement device for a wind turbine generator set according to claim 3, characterized in that: The braking mechanism comprises a positioning assembly and a plurality of buffer assemblies, wherein the plurality of buffer assemblies are arranged in the positioning assembly; The positioning assembly comprises a brake ring (3) and a plurality of positioning grooves (5), wherein the plurality of positioning grooves (5) are all arranged on the inner side of the brake ring (3).

5. The yaw braking torque enhancement device for a wind turbine generator set according to claim 4, characterized in that: The plurality of buffer components each comprises a rubber shell (6), a top plate (18), a spring sheet (19), a connecting plate (20) and a plurality of rubber sheets (17); the plurality of rubber sheets (17) are evenly distributed and arranged in the rubber shell (6); the top plate (18) is arranged in the rubber shell (6); the top plate (18) comprises a resisting portion, the resisting portion resists the plurality of rubber sheets (17); the connecting plate (20) is detachably connected to the rubber shell (6); the spring sheet (19) is arranged between the top plate (18) and the connecting plate (20); the spring sheet (19) resists the top plate (18) and the connecting plate (20).

6. The yaw braking torque enhancement device for a wind turbine generator set according to claim 5, characterized in that: The plurality of rubber shells (6) are evenly distributed on the inner side of the brake ring (3), the plurality of rubber shells (6) are staggered with the plurality of positioning grooves (5), and the plurality of connecting plates (20) are detachably connected to the brake ring (3).

7. The yaw braking torque enhancement device for a wind turbine generator set according to claim 1, characterized in that: A bearing (2) is detachably connected inside the machine body (1).

8. A yaw braking torque boosting device for a wind turbine generator set according to any one of claims 4 or 7, characterized in that: The brake ring (3) is arranged on the inner side of the bearing (2) and is detachably connected to the movable end of the bearing (2); the limiting mechanism is arranged on the inner side of the brake ring (3); the connecting plate (8) is detachably connected to the body (1) and the fixed end of the bearing (2); and the movable end of the bearing (2) is arranged in the slot (10).

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