A fan yaw gear cleaning device

Abstract

The application discloses a fan yaw gear cleaning device and relates to the technical field of fan yaw gear cleaning. The cleaning unit comprises a mounting ring, a monitoring assembly, a connecting assembly and a cleaning assembly. The elastic coupling transmission and the self-adaptive fitting structure of the cleaning unit significantly improve the cleaning efficiency and reliability of the yaw gear. The scraper moves synchronously when the yaw system is running. The rack of the scraper and the sliding plate are elastically reset by the spring, ensuring that the scraper always fits the gear slot. Even in the case of tooth surface inclination or oil accumulation, the scraper can maintain clean contact and avoid insufficient scraping force or local overload. In addition, the arc-shaped flow guide design of the arc plate matches the gear slot of the gear disc, forming a closed waste collection cavity, effectively preventing waste diffusion during cleaning and improving collection efficiency.

Description

Technical Field

[0001] This invention relates to wind turbine yaw gear cleaning technology, and more particularly to a wind turbine yaw gear cleaning device. Background Technology

[0002] The yaw system of a modern wind turbine is a core component for achieving efficient wind energy capture, and its operational reliability directly impacts the unit's annual power generation efficiency and equipment lifespan. Current yaw drive systems employ a combination of motor and reducer, using a planetary gear transmission mechanism to drive the slewing bearing and adjust the nacelle azimuth angle. During continuous operation, the combined effects of metal particles generated by gear meshing, lubricating grease oxidation products, and environmental impurities (such as dust and salt spray) create a complex deposit on the yaw bearing tooth surface. Field testing data shows a positive correlation between the amount of grease buildup on the tooth surface and the unit's operating time. When the deposit thickness exceeds 0.3 mm, it leads to a 15%-20% increase in yaw damping, significantly reducing yaw response speed and accelerating bearing wear.

[0003] In the existing technology, the cleaning and maintenance of yaw gears mainly relies on manual periodic cleaning, which has the following technical bottlenecks: 1) It requires shutdown for operation, resulting in power generation loss, and the safety risks of high-altitude operation are high; 2) Traditional scraping tools are difficult to remove stubborn oil stains deeply embedded in the tooth grooves. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is: the problem that the amount of oil and dirt accumulation on the tooth surface affects the yaw response speed and accelerates bearing wear.

[0005] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes a wind turbine yaw gear cleaning device, which includes a nacelle unit, including a nacelle, a gear disk hinged to the bottom axis of the nacelle, a tower fixedly set at the bottom axis of the gear disk, and a drive component circumferentially set at the bottom axis of the nacelle;

[0006] The cleaning unit is located on the inner periphery of the gear disc. The cleaning unit includes a mounting ring fixedly disposed on the bottom of the nacelle, a monitoring component fixedly disposed on the bottom periphery of the mounting ring, multiple sets of connecting components fixedly disposed on the periphery of the mounting ring, and a cleaning component hinged to the bottom axis of the connecting components.

[0007] In a preferred embodiment of the wind turbine yaw gear cleaning device of the present invention: the nacelle includes a bottom plate disposed at its bottom;

[0008] The driving component includes multiple sets of motors fixedly positioned on the periphery of the base plate, and a drive wheel fixedly mounted at the center of the motor shaft.

[0009] In a preferred embodiment of the wind turbine yaw gear cleaning device of the present invention: the monitoring component includes a monitoring body fixedly installed at the bottom of the mounting ring, and a limiting wheel disposed at the end of the monitoring body.

[0010] In a preferred embodiment of the wind turbine yaw gear cleaning device of the present invention, the connecting assembly includes a limiting ring that is simultaneously fixedly sleeved on the mounting ring and the base plate, a lifting component that is slidably embedded in the inner wall of the limiting ring, and an adjusting rod that is threadedly connected to the inner wall of the lifting component.

[0011] In a preferred embodiment of the wind turbine yaw gear cleaning device of the present invention: the cleaning component includes a coupling member meshing on one side of the drive wheel, a scraper member connected to one side of the coupling member, and a collecting member disposed on one side of the scraper member.

[0012] In a preferred embodiment of the wind turbine yaw gear cleaning device of the present invention: the coupling element includes a transmission wheel meshing on one side of the drive wheel, an upper wheel disk meshing on one side of the transmission wheel, and a lower wheel disk axially connected to the bottom of the upper wheel disk.

[0013] In a preferred embodiment of the wind turbine yaw gear cleaning device of the present invention: the upper wheel and the lower wheel have the same structure and are mirror images of each other;

[0014] The upper wheel and the lower wheel are provided with toothed surfaces on their adjacent sides, and are fixedly connected with compression springs.

[0015] In a preferred embodiment of the wind turbine yaw gear cleaning device of the present invention: the lifting component includes a lifting rod threadedly connected to the outside of the adjusting rod, and a snap-fit ​​rod slidably sleeved on the outside of the lifting rod;

[0016] The lifting rod has protruding posts on both sides of its body;

[0017] The snap-fit ​​rod has a limiting groove.

[0018] In a preferred embodiment of the wind turbine yaw gear cleaning device of the present invention: the scraper component includes a sliding plate slidably connected to the bottom of the mounting ring, a rack slidably connected to one side of the sliding plate, a spring fixedly connected to the end of the rack, and a scraper fixedly connected to the end of the sliding plate.

[0019] In a preferred embodiment of the wind turbine yaw gear cleaning device of the present invention: the collecting component includes an arc plate fixedly disposed at the bottom of the outer side of the lifting rod.

[0020] The beneficial effects of this invention are as follows: By employing an elastic coupling transmission and adaptive fitting structure in the cleaning unit, this invention significantly improves the cleaning efficiency and reliability of the yaw gear. The coupling component in the cleaning assembly adopts a mirrored staggered tooth surface design for the upper and lower wheel discs, combined with the elastic meshing mechanism of the compression spring. This structure not only allows the transmission wheel and the drive wheel to maintain rigid meshing, but also drives the flexible transmission chain through the preload of the compression spring, synchronously driving the scraper component during yaw system operation. The rack and sliding plate of the scraper component achieve elastic reset through springs, ensuring that the scraper always fits against the tooth grooves, maintaining clean contact even when the tooth surface is tilted or oil stains accumulate, avoiding insufficient scraping force or local overload. Furthermore, the arc-shaped guide design of the arc plate matches the tooth grooves of the gear disc, forming a closed waste collection cavity, effectively preventing waste diffusion during cleaning and improving collection efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein:

[0022] Figure 1 A schematic diagram of the internal structure of the nacelle of the wind turbine yaw gear cleaning device of the present invention is shown;

[0023] Figure 2 An exploded view of the internal structure of the nacelle of the wind turbine yaw gear cleaning device of the present invention is shown.

[0024] Figure 3 A schematic diagram of the internal structure of the yaw gear cleaning device of the present invention is shown.

[0025] Figure 4 This diagram shows a partial three-dimensional cross-sectional view of the internal structure of the toothed disc of the present invention from another perspective;

[0026] Figure 5 The present invention is shown Figure 2 Enlarged view of the cleaning component structure at point A;

[0027] Figure 6 The present invention is shown Figure 3 Enlarged view of the scraper component structure at point B;

[0028] Figure 7 The invention is shown Figure 4 Enlarged view of the coupling structure at point C. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0031] Reference Figures 1 to 7 This embodiment provides a wind turbine yaw gear cleaning device, including a nacelle unit 1, including a nacelle 11, a gear disk 12 hinged to the bottom axis of the nacelle 11, a tower 13 fixedly disposed at the bottom axis of the gear disk 12, and a drive component 14 circumferentially disposed at the bottom axis of the nacelle 11.

[0032] The cleaning unit 2 is located inside the gear disk 12. The cleaning unit 2 includes a mounting ring 21 fixedly disposed at the bottom of the engine compartment 11, a monitoring component 22 fixedly disposed at the bottom periphery of the mounting ring 21, multiple sets of connecting components 24 fixedly disposed at the periphery of the mounting ring 21, and a cleaning component 25 hinged to the bottom axis of the connecting component 24.

[0033] In one embodiment provided in this application, the cabin 11 includes a floor plate 111 disposed at its bottom;

[0034] The drive unit 14 includes multiple sets of motors 141 fixedly positioned around the base plate 111, and a drive wheel 142 fixedly mounted at the shaft of the motors 141.

[0035] In this embodiment, a base plate 111 protrudes from the bottom of the cabin 11. A crawling channel is provided at the center of the base plate 111 to facilitate crew access into the cabin 11. Four sets of shaft holes are formed on the periphery of the base plate 111. A motor 141 is fixed to the top of the shaft hole of the base plate 111 via a flange connector at the center of the shaft hole. The output shaft of the motor 141 passes through the shaft hole and meshes with a gear plate at the bottom of the base plate 111. The drive wheel 142 is a spur gear with a module matching the gear plate 12 and is connected to the motor output shaft via a coupling. The coupling is a flexible pin coupling, allowing for ±1° of angular compensation. The four sets of motors 141 drive the base plate 111 to rotate via a planetary gear transmission mechanism to achieve cabin azimuth adjustment.

[0036] Preferably, the motor 141 is a three-phase asynchronous motor with an IP55 protection rating and a power range of 1.5kW to 3.7kW, and is fixed to the periphery of the base plate 111 by bolts of M16×80. The meshing clearance between the drive wheel 142 and the gear plate 12 is controlled at 0.2mm-0.3mm to avoid jamming or excessive wear.

[0037] The gear disc 12 is a ring gear structure. The tooth surface is treated with carburizing and quenching, with a surface hardness ≥ HRC58, and the tooth profile conforms to ISO6336 standard. The bottom axis of the gear disc 12 is fixed to the top of the tower 13 via flange connector 121. The flange connector includes M36×300 bolts and a sealing gasket to prevent rainwater ingress. It is connected to the top flange of the tower 13 via M20×120 bolts to form an integral support frame.

[0038] Preferably, the mounting ring 21 is a ring-shaped frame structure, welded from Q345B steel, with an outer diameter matching the inner diameter of the gear disc 12, and is fixed to the bottom of the base plate 111 by bolts of M20×120. The mounting ring 21 provides an installation position for mounting two sets of monitoring components 22 and two sets of cleaning components 25.

[0039] Preferably, the monitoring component 22 is flange-fixed to the bottom periphery of the mounting ring 21 and includes an infrared sensor, pressure sensor or camera, etc., for real-time monitoring of the cleanliness status of the tooth surface of the gear disc.

[0040] Two sets of connecting components 24 are evenly distributed along the circumference of the mounting ring, cooperating with two sets of cleaning components 25 at the bottom. Each set consists of a threaded rod and a rotary joint or a telescopic rod mechanism, allowing the connecting components 24 to drive the cleaning components 25 downwards, thereby achieving a transmission connection between the cleaning components 25 and the drive wheel 142. The cleaning components 25 are hinged to the bottom axis of the connecting components 24 and include cleaning tools such as scrapers and collection plates, which can automatically conform to the tooth surface for cleaning according to the tooth shape.

[0041] Furthermore, the cleaning component 25 has a coupling function, and it is always engaged on one side of the drive wheel 142. When the connecting component 24 drives the cleaning component 25 to descend, the transmission connection between the cleaning component 25 and the drive wheel 142 is realized. While the drive wheel 142 drives the engine compartment 11 to turn, it can also drive the cleaning component 25 to run, so that the cleaning surface of the cleaning component 25 is fully in contact with the tooth surface, and the tooth surface is cleaned while turning.

[0042] Yaw drive phase: When the wind turbine needs to adjust its orientation, the controller activates the corresponding drive unit 14 based on the wind direction sensor data. The four sets of motors 141 simultaneously drive the drive wheel 142 to rotate, which in turn drives the gear disk 12 to rotate, thereby achieving the adjustment of the nacelle azimuth angle.

[0043] Cleaning Operation Phase: During the operation of the yaw system, the monitoring component 22 continuously collects information on the tooth surface status. When the tooth surface contamination level exceeds the set threshold, the monitoring personnel periodically drive the connecting component 24 based on the collected information. The connecting component 24 drives the cleaning component 25 to descend and extend, bringing the cleaning component 25 close to the tooth surface. The cleaning component 25 rotates via the motor 141, ensuring its cleaning surface is fully in contact with the tooth surface. The scraper adheres to the tooth surface of the tooth disc 12, removing the adhering material from the tooth grooves. During the cleaning process, the monitoring component provides synchronous feedback on the cleaning effect to ensure that the cleaning quality meets the standards. After cleaning is completed, the cleaning component returns to its initial position without affecting the yaw motion.

[0044] In summary, this device enables online cleaning of the yaw gear, reducing downtime for maintenance; improves yaw response speed and transmission efficiency, enhancing unit operational stability; extends the lifespan of key components in the yaw system, and reduces the failure rate.

[0045] Reference Figure 2 and Figure 4 As an optional embodiment, the monitoring component 22 includes a monitoring body 221 fixedly installed at the bottom of the mounting ring 21, and a limiting wheel 222 disposed at the end of the monitoring body 221.

[0046] In this embodiment, the monitoring body 221 is a rectangular shell structure, made of aluminum alloy extrusion profile model 6063T5, and the surface is anodized to enhance corrosion resistance. The monitoring body 221 is fixedly installed on the bottom of the mounting ring 21 by bolt group M12×50, with the mounting surface parallel to the toothed disc 12 to ensure that the monitoring direction is perpendicular to the tooth surface.

[0047] Preferably, the monitoring unit 221 integrates the following functional modules: Infrared ranging sensor: the transmitter and receiver are symmetrically arranged on both sides of the housing, used for real-time measurement of the thickness of oil stains on the tooth surface of the gear disc.

[0048] ±0.05mm. Pressure sensor: Embedded in the bottom of the monitoring body, measuring the contact pressure between the limit wheel 222 and the tooth surface, with a range of 0~50N. Camera module: Equipped with a waterproof housing and LED fill light, transmitting tooth surface images to the control box via a wireless transmission module.

[0049] The limiting wheel 222 is a cylindrical roller structure with an outer diameter of Φ50mm. It uses polyurethane elastomer with a Shore A hardness of 85A to encapsulate a metal wheel core, and its surface is engraved with anti-slip textures to enhance friction. The limiting wheel 222 is hinged to the end of the monitoring body 221 via a rotary joint. The rotary joint includes a bearing housing and ball bearings, allowing the limiting wheel to swing within a ±15° range to adapt to self-adaptive contact after tooth surface tilting or wear. When the limiting wheel 222 contacts the tooth groove of the toothed disc 12, the contact force is fed back by the pressure sensor 221b. The controller dynamically adjusts the position of the limiting wheel according to a preset threshold of 1030N to ensure stable contact with the cleaning component 25.

[0050] In summary, the limit wheel 222 compensates for the tilt of the tooth surface by swinging, ensuring that the cleaning component 25 always fits the tooth surface, thus improving cleaning efficiency.

[0051] Reference Figures 1 to 7 As an optional embodiment, the transfer connection assembly 24 includes a limiting ring 241 that is simultaneously fixedly sleeved on the mounting ring 21 and the base plate 111, a lifting member 242 that is slidably embedded in the inner wall of the limiting ring 241, and an adjusting rod 243 that is threadedly connected to the inner wall of the lifting member 242.

[0052] In one embodiment provided in this application, the cleaning component 25 includes a coupling member 251 engaged with one side of the drive wheel 142, a scraper member 252 connected to one side of the coupling member 251, and a collection member 253 disposed on one side of the scraper member 252.

[0053] In one embodiment provided in this application, the coupling member 251 includes a transmission wheel 2511 meshing with one side of the drive wheel 142, an upper wheel 2512 meshing with one side of the transmission wheel 2511, and a lower wheel 2513 axially connected to the bottom of the upper wheel 2512.

[0054] In one embodiment provided in this application, the upper roulette 2512 and the lower roulette 2513 have the same structure and are mirror images of each other;

[0055] The upper wheel 2512 and the lower wheel 2513 are provided with toothed surfaces 31 on their adjacent sides, and are fixedly connected with compression springs 32.

[0056] In one embodiment provided in this application, the lifting member 242 includes a lifting rod 2421 threadedly connected to the outside of the adjusting rod 243, and a snap-fit ​​rod 2422 slidably sleeved on the outside of the lifting rod 2421;

[0057] The lifting boom 2421 has protruding posts M on both sides of the boom body;

[0058] The locking rod 2422 has a limit groove N.

[0059] In one embodiment provided in this application, the scraper component 252 includes a sliding plate 2521 slidably connected to the bottom of the mounting ring 21, a rack 2522 slidably connected to one side of the sliding plate 2521, a spring 2523 fixedly connected to the end of the rack 2522, and a scraper 2524 fixedly connected to the end of the sliding plate 2521.

[0060] In one embodiment provided in this application, the collecting component 253 includes an arc plate 2531 fixedly disposed at the bottom outer side of the lifting rod 2421.

[0061] In this embodiment, as Figure 5 and Figure 6 As shown, the inner wall of the limiting ring 241 is machined with an annular guide groove, which forms a nested fit with the flange structure on the outer wall of the mounting ring 21. The flange width matches the depth of the guide groove, ensuring that the lifting component 242 remains axially fixed when the mounting ring 21 moves with the cabin 11.

[0062] Preferably, the top of the limiting ring 241 is provided with a dustproof lip, which is made of elastic rubber and fits the bottom surface of the mounting ring 21 to prevent dust from entering the moving area of ​​the lifting component 242.

[0063] Better, such as Figure 7 As shown, the lifting component 242 consists of a locking rod 2422 sleeved in the inner wall of the limiting ring 241, and a lifting rod 2421 that is slidably and radially limited and connected in the inner wall of the locking rod 2422. Both the locking rod 2422 and the lifting rod 2421 are hollow inside, facilitating a sleeved connection.

[0064] Specifically, such as Figure 7 As shown, the protrusions M on both sides of the lifting rod 2421 and the limiting groove N at the bottom of the locking rod 2422 form a clearance fit, allowing the lifting rod 2421 to slide in the vertical direction while restricting its rotational freedom. When the lifting rod 2421 moves down to the upper end face of the upper wheel 2512, it will press the upper wheel 2512 down to make it engage with the tooth surface of the lower wheel 2513 to achieve tight coupling transmission.

[0065] The threaded hole on the inner wall of the lifting rod 2421 directly engages with the thread on the outer side of the adjusting rod 243. When the adjusting rod 243 rotates, it drives the lifting rod 2421 to move up and down. The lead angle of the threaded pair is designed to be 5° to ensure self-locking characteristics and prevent accidental slippage due to gravity.

[0066] A hexagonal manual crank is welded to the end of the adjusting rod 243. The operator drives the threaded pair by rotating the crank. The crank and the adjusting rod 243 are connected by a keyed coupling to prevent slippage during torque transmission.

[0067] Better, such as Figure 3As shown, the transmission wheel 2511 and the driving wheel 142 transmit power through spur gear meshing. The contact line length of the tooth surface accounts for 80% of the tooth width, ensuring smooth power transmission. The other side of the transmission wheel 2511 meshes with the coupling element 251, which is connected by an upper wheel disc 2512 and a lower wheel disc 2513. The lower wheel disc 2513 is fixed in a horizontal position, so that changes in the upper wheel disc 2512 have little impact on the lower wheel disc 2513; in this case, the coupling is loose, and the lower wheel disc 2513 is not affected by the upper wheel disc 2512. Conversely, if changes in the upper wheel disc 2512 have a significant impact on the lower wheel disc 2513, the coupling is tight, and the lower wheel disc 2513 is affected by the upper wheel disc 2512.

[0068] like Figure 7 As shown, the upper wheel 2512 and the lower wheel 2513 have the same structure and are mirror images of each other. Therefore, the protruding tooth surfaces 31 of the upper wheel 2512 and the lower wheel 2513 are positioned opposite each other, and the adjacent tooth surfaces 31 are elastically connected by compression springs 32. The two ends of the compression springs 32 are respectively fixed in the grooves of the upper wheel 2512 and the lower wheel 2513, forming a flexible transmission chain driven by preload. The tooth surfaces 31 adopt an interlaced tooth profile design, with adjacent tooth peaks and valleys staggered to maximize the contact area during elastic meshing and reduce local stress concentration.

[0069] When the adjusting rod 243 rotates, it drives the lifting rod 2421 to move down. The protrusions M on both sides of the lifting rod 2421 move down to the upper end face of the upper wheel 2512, which in turn presses down the upper wheel 2512 so that it engages with the tooth surface 31 of the lower wheel 2513, thereby achieving tight coupling transmission while compressing the compression spring 32.

[0070] Both the upper gear 2512 and the lower gear 2513 are connected to the bearing housing of the locking rod 2422 via deep groove ball bearings in the inner wall, allowing them to rotate freely on the locking rod 2422. The lower gear 2513 is horizontally limited at both ends by the locking rod 2422, preventing it from moving up or down. The upper gear 2512 is always meshed with its transmission wheel 2511, which in turn is always meshed with the drive wheel 142. When the upper gear 2512 and the lower gear 2513 are tightly coupled, the upper gear 2512 will rotate unloaded following the drive wheel 142, preventing the motor 141 from being overloaded and its operating burden from increasing.

[0071] Furthermore, the scraper 252 is directly meshed on the gear surface of the lower wheel 2513. As the lower wheel 2513 rotates with the upper wheel 2412, it will drive the scraper 252 to move back and forth in the direction of the extension of the axis, so that its cleaning surface is completely in contact with or away from the tooth surface.

[0072] like Figure 5 and Figure 6As shown, the scraper component 252 consists of a sliding plate 2521 slidably and limitingly connected to the bottom of the mounting ring 21, a rack 2522 slidably connected to the side of the sliding plate 2521, a spring 2523 fixedly connected to the end of the rack 2522, and a scraper 2524 fixedly connected to the end of the sliding plate 2521. A guide groove is welded downwards to the bottom of the mounting ring 21, allowing the sliding plate 2521 to be slidably connected to the mounting ring 21 via the guide groove. A sliding groove is formed through the side of the sliding plate 2521, and the straight surface of the rack 2522 is slidably connected to the sliding plate 2521 through the groove, with the tooth surface of the rack 2522 meshing with the tooth surface of the lower wheel 2513.

[0073] Secondly, the end of the rack 2522 is connected to the spring 2523 via a pin, and the other end of the spring 2523 is fixed to the inner side of the sliding plate 2521. Thus, when the rack 2522 drives the lower wheel 2513, the elastic action of the spring 2523 elastically pushes the sliding plate 2521, ensuring that its scraper 2524 remains elastically attached to the tooth surface of the gear disc 12. The spring 2523 also provides a restoring force for the scraper 2524, allowing it to disengage from the surface of the gear disc 12 when no external force is applied.

[0074] When the upper wheel 2512 is pressed down by the protruding post M and tightly coupled with the lower wheel 2513, the lower wheel 2513 will rotate together with the upper wheel 2512. The lower wheel 2513 will drive the rack 2522 to move along the axis of the gear 12, eventually approaching the tooth groove of the gear 12. During the movement of the rack 2522, under the elastic force of the spring 2523 on one side, the sliding plate 2521 and the scraper 2524 pin-connected to the end face of the sliding plate 2521 are pushed into the tooth groove of the gear 12. When the scraper 2524 is in contact with the tooth groove of the gear 12, the spring 2523 is compressed, preventing overload between the rack 2522 and the lower wheel 2513.

[0075] When the upper wheel 2512 is released from the pressure of the protruding post M and descends, the upper wheel 2512 returns to its original position under the pressure of the compression spring 32, causing the upper wheel 2512 to disengage from the lower wheel 2513. At this time, the gear 12 is still running, pushing the scraper 2524 out of the tooth groove, and the originally compressed spring 2523 pushes the rack 2522 in the opposite direction, causing it to return to its original position.

[0076] Preferably, the scraper 2524 is a rubber plate to avoid wear on the tooth grooves of the toothed disc 12.

[0077] Better, such as Figure 6As shown, the arc plate 2531 is fixedly sleeved on the bottom outer side of the lifting rod 2421, and its radius of curvature matches the tooth groove of the toothed disc 12. After moving down with the lifting rod 2421, it will fit against the end of the tower 13, forming a closed waste collection cavity. During the revolution of the lifting rod 2421 around the toothed disc 12, the oil and dirt deposits scraped by the upper scraper 2524 inside the tooth groove are collected and collected, making it convenient for maintenance personnel to collect and clean.

[0078] In summary, this device significantly improves the cleaning efficiency and reliability of the yaw gear through the elastic coupling transmission and adaptive fitting structure of the cleaning unit 2. The coupling element 251 in the cleaning assembly 25 adopts a mirrored staggered tooth surface design of the upper wheel 2512 and the lower wheel 2513, combined with the elastic meshing mechanism of the compression spring 32. This structure not only allows the transmission wheel 2511 to maintain rigid meshing with the drive wheel 142, but also drives the flexible transmission chain through the preload of the compression spring 32, synchronously driving the scraper component 252 during yaw system operation. The rack 2522 and sliding plate 2521 of the scraper component 252 achieve elastic reset through the spring 2523, ensuring that the scraper 2524 always fits the tooth groove, maintaining clean contact even when the tooth surface is tilted or oil accumulates, avoiding insufficient scraping force or local overload. Furthermore, the arc-shaped guide design of the arc plate 2531 matches the tooth groove of the toothed disc 12, forming a closed waste collection cavity, effectively preventing waste diffusion during cleaning and improving collection efficiency.

[0079] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A cleaning device for a wind turbine yaw gear, characterized in that: include, The cabin unit (1) includes a cabin (11), a gear disk (12) hinged to the bottom axis of the cabin (11), a tower (13) fixedly disposed at the bottom axis of the gear disk (12), and a drive component (14) circumferentially disposed at the bottom axis of the cabin (11). The cleaning unit (2) is located on the inner periphery of the gear disc (12). The cleaning unit (2) includes a mounting ring (21) fixedly disposed on the bottom of the cabin (11), a monitoring component (22) fixedly disposed on the bottom periphery of the mounting ring (21), multiple sets of connecting components (24) fixedly disposed on the periphery of the mounting ring (21), and a cleaning component (25) hinged to the bottom axis of the connecting component (24). The cabin (11) includes a floor plate (111) disposed at its bottom. The connecting assembly (24) includes a limiting ring (241) that is fixedly sleeved on the mounting ring (21) and the base plate (111), a lifting member (242) that is slidably embedded in the inner wall of the limiting ring (241), and an adjusting rod (243) that is threadedly connected to the inner wall of the lifting member (242). The cleaning assembly (25) includes a coupling member (251) engaged with one side of the drive wheel (142), a scraper member (252) connected to one side of the coupling member (251), and a collection member (253) disposed on one side of the scraper member (252). The coupling member (251) includes a transmission wheel (2511) meshing with one side of the drive wheel (142), an upper wheel disc (2512) meshing with one side of the transmission wheel (2511), and a lower wheel disc (2513) axially connected to the bottom of the upper wheel disc (2512). The upper wheel (2512) and the lower wheel (2513) have the same structure and are mirror images of each other; The upper wheel (2512) and the lower wheel (2513) are provided with toothed surfaces (31) on their adjacent sides, and are fixedly connected with compression springs (32). The lifting component (242) includes a lifting rod (2421) threadedly connected to the outside of the adjusting rod (243), and a snap-fit ​​rod (2422) slidably sleeved on the outside of the lifting rod (2421). The lifting rod (2421) has protruding posts (M) on both sides of its body; The snap-fit ​​rod (2422) has a limit groove (N); The scraper component (252) includes a sliding plate (2521) slidably connected to the bottom of the mounting ring (21), a rack (2522) slidably connected to one side of the sliding plate (2521), a spring (2523) fixedly connected to the end of the rack (2522), and a scraper (2524) fixedly connected to the end of the sliding plate (2521).

2. The wind turbine yaw gear cleaning device according to claim 1, characterized in that: The drive unit (14) includes multiple sets of motors (141) fixedly positioned around the base plate (111), and the drive wheel (142) fixedly disposed at the shaft of the motors (141).

3. The wind turbine yaw gear cleaning device according to claim 2, characterized in that: The monitoring component (22) includes a monitoring body (221) fixedly installed at the bottom of the mounting ring (21), and a limiting wheel (222) disposed at the end of the monitoring body (221).

4. The wind turbine yaw gear cleaning device according to claim 3, characterized in that: The collecting component (253) includes an arc plate (2531) fixedly installed at the bottom of the outer side of the lifting rod (2421).

Images