Fan yaw gear cleaning device

Abstract

The invention discloses a fan yaw gear cleaning device, and relates to the technical field of fan yaw gear cleaning, the fan yaw gear cleaning device comprises a cabin unit, and the cabin unit comprises a cabin, a fluted disc, a tower drum and a driving part; the cleaning unit comprises a mounting ring, a monitoring assembly, a connecting assembly and a cleaning assembly. According to the yaw gear cleaning device, the cleaning efficiency and reliability of the yaw gear are remarkably improved through elastic coupling transmission and a self-adaptive attaching structure of the cleaning unit. When the yaw system operates, the scraper piece is synchronously driven to move. The rack of the scraper piece and the sliding plate achieve elastic reset through the spring, it is guaranteed that the scraper is attached to the tooth groove all the time, clean contact can be maintained even under the condition that the tooth face inclines or oil dirt is accumulated, and insufficient scraping force or local overload is avoided. In addition, the arc-shaped flow guide design of the arc plate is matched with tooth grooves of the fluted disc, a closed waste collecting cavity is formed, waste diffusion in the cleaning process is effectively prevented, and the collecting efficiency is improved.

Description

Technical Field

[0001] The invention relates to a fan yaw gear cleaning technology, in particular to a fan yaw gear cleaning device. Background Art

[0002] The yaw system of a modern wind turbine is the core mechanism for efficient wind energy capture, and its operational reliability directly impacts the unit's annual power generation efficiency and equipment lifespan. The current yaw drive system utilizes a motor-reducer combination drive method, with a planetary gear transmission mechanism driving the slewing bearing to achieve nacelle azimuth adjustment. During continuous operation, this system forms complex deposits on the yaw bearing tooth surfaces due to the combined effects of metal particles generated by the meshing of the gear pairs, grease oxidation products, and environmental impurities (such as sand, dust, and salt spray). Field test data shows that the amount of oil deposits on the tooth surfaces is positively correlated with the unit's operating time. When the deposit thickness exceeds 0.3mm, it will lead to an increase of 15% to 20% 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 rely on regular manual cleaning, which has the following technical bottlenecks: 1) The need to shut down the machine for operation leads to power generation loss, and the safety risk of high-altitude operation is 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 to address the problem that the amount of oil deposits accumulated on the tooth surface affects the yaw response speed and accelerates bearing wear.

[0005] The above technical problems are solved by the following technical solutions: The present invention provides a wind turbine yaw gear cleaning device, which includes a nacelle unit, including a nacelle, a gear disc hinged at the axis of the bottom of the nacelle, a tower fixedly arranged at the axis of the bottom of the gear disc, and a driving member circumferentially arranged at the axis of the bottom of the nacelle;

[0006] A cleaning unit is provided on the inner circumference of the gear disc, and the cleaning unit includes a mounting ring fixedly provided on the bottom of the cabin, a monitoring component fixedly provided on the bottom circumference of the mounting ring, a plurality of connecting components fixedly provided on the circumference of the mounting ring, and a cleaning component hinged at the bottom axis of the connecting component.

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

[0008] The driving member includes a plurality of motors fixedly limited at the peripheral side of the base plate, and a driving wheel fixedly arranged at the axis of the motor.

[0009] In a preferred embodiment of the wind turbine yaw gear cleaning device of the present invention, the monitoring assembly includes a monitoring body fixedly mounted on the bottom of the mounting ring, and a limiting wheel arranged at the end of the monitoring body.

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

[0011] In a preferred embodiment of the fan yaw gear cleaning device of the present invention: the cleaning assembly includes a coupling member engaged on one side of the driving wheel, a scraper member connected to one side of the coupling member, and a collecting member arranged on one side of the scraper member.

[0012] In a preferred embodiment of the fan yaw gear cleaning device of the present invention: the coupling member includes a transmission wheel engaged on one side of the driving wheel, an upper wheel disc engaged on one side of the transmission wheel, and a lower wheel disc axially connected to the bottom of the upper wheel disc.

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

[0014] A tooth surface is provided on one side of the upper wheel disc adjacent to the lower wheel disc, and a compression spring is fixedly connected thereto.

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

[0016] The lifting rod is provided with convex columns on both sides of the rod body;

[0017] The clamping rod is provided with a limiting groove.

[0018] In a preferred embodiment of the fan yaw gear cleaning device of the present invention: the scraper member 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 fan yaw gear cleaning device of the present invention: the collecting member includes an arc plate fixedly arranged on the bottom outer side of the lifting rod.

[0020] The beneficial effects of the present invention are as follows: the present invention significantly improves the cleaning efficiency and reliability of the yaw gear through the elastic coupling transmission and adaptive fitting structure of the cleaning unit. The coupling member in the cleaning assembly adopts a mirror-image staggered tooth surface design of the upper wheel disc and the lower wheel disc, combined with the elastic meshing mechanism of the compression spring. This structure not only allows the transmission wheel and the active wheel to maintain rigid meshing, but also drives the flexible transmission chain through the pre-tightening force of the compression spring, and synchronously drives the scraper member to move when the yaw system is running. The rack and sliding plate of the scraper member are elastically reset by the spring to ensure that the scraper always fits the tooth groove, and can maintain clean contact even when the tooth surface is tilted or oil and dirt accumulate, avoiding insufficient scraping force or local overload. In addition, the arc-shaped guide design of the arc plate matches the tooth groove of the tooth disc to form a closed waste collection cavity, which effectively prevents the spread of waste during the cleaning process and improves the collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0022] Figure 1 A schematic diagram showing the internal structure of a nacelle of a fan yaw gear cleaning device according to the present invention is shown;

[0023] Figure 2 An exploded schematic diagram of the internal structure of a nacelle of a wind turbine yaw gear cleaning device according to the present invention is shown;

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

[0025] Figure 4 It shows a schematic diagram of a partial cross-section structure of the interior of the toothed disc of the present invention from another perspective;

[0026] Figure 5 The present invention shows Figure 2 A magnified view of the cleaning component structure at point A;

[0027] Figure 6 The present invention shows Figure 3 An enlarged view of the scraper structure at point B;

[0028] Figure 7 Shows the invention Figure 4 Enlarged view of the coupling structure at C. DETAILED DESCRIPTION

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

[0030] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0031] Reference Figures 1 to 7 , this embodiment provides a wind turbine yaw gear cleaning device, comprising a nacelle unit 1, including a nacelle 11, a gear disc 12 hinged at the bottom axis of the nacelle 11, a tower 13 fixedly arranged at the bottom axis of the gear disc 12, and a driving member 14 circumferentially arranged at the bottom axis of the nacelle 11;

[0032] The cleaning unit 2 is located on the inner circumference of the gear disc 12. The cleaning unit 2 includes a mounting ring 21 fixedly arranged on the bottom circumference of the cabin 11, a monitoring component 22 fixedly arranged on the bottom circumference of the mounting ring 21, a plurality of connecting components 24 fixedly arranged on the circumference of the mounting ring 21, and a cleaning component 25 hinged at the bottom axis of the connecting component 24.

[0033] In one embodiment provided in the present application, the nacelle 11 includes a bottom plate 111 disposed at the bottom thereof;

[0034] The driving member 14 includes a plurality of motors 141 fixedly positioned on the periphery of the base plate 111 , and a driving wheel 142 fixedly disposed at the axis of the motors 141 .

[0035] In this embodiment, a base plate 111 is protruded from the bottom of the cabin 11, and a crawling passage is left at the axis center of the base plate 111 to facilitate the crew to enter the cabin 11. Four groups of shaft holes are opened on the peripheral side of the base plate 111, and a motor 141 is fixed to the top of the shaft hole of the base plate 111 through a flange connector at the axis center of the shaft hole, and the output shaft of the motor 141 is inserted through the shaft hole and meshes with the gear disc at the bottom of the base plate 111. The driving wheel 142 is a spur gear structure, the module of which matches the gear disc 12, and is connected to the motor output shaft through a coupling. The coupling adopts an elastic sleeve pin coupling, which allows ±1° deviation compensation. The four groups of motors 141 drive the base plate 111 to rotate through the 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 circumference of the base plate 111 by a set of M16×80 bolts. The meshing clearance between the driving wheel 142 and the toothed disc 12 is controlled within 0.2mm0.3mm to avoid jamming or excessive wear.

[0037] Sprocket 12 is a ring gear structure with a carburized and quenched tooth surface, achieving a surface hardness ≥ HRC58. Its tooth profile complies with ISO 6336 standards. The bottom axis of gear 12 is secured to the top of tower 13 via flange connector 121. This flange connector includes an M36×300 bolt assembly and a sealing gasket to prevent rainwater infiltration. It is connected to the top flange of tower 13 via an M20×120 bolt assembly, forming an integral support frame.

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

[0039] Preferably, the monitoring component 22 is fixedly connected to the bottom circumference of the mounting ring 21 by a flange, and includes an infrared sensor, a pressure sensor or a camera, etc., for real-time monitoring of the cleaning status of the tooth surface of the sprocket.

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

[0041] Furthermore, the cleaning assembly 25 has a coupling function, always meshing with one side of the driving wheel 142. When the connecting assembly 24 drives the cleaning assembly 25 downward, a transmission connection between the cleaning assembly 25 and the driving wheel 142 is established. While the driving wheel 142 drives the nacelle 11 to turn, it also drives the cleaning assembly 25, ensuring that the cleaning surface of the cleaning assembly 25 is in perfect contact with the tooth surface, allowing the tooth surface to be cleaned while turning.

[0042] Yaw drive stage: When the wind turbine needs to adjust its direction, the controller starts the corresponding drive component 14 according to the wind direction sensor data. The four sets of motors 141 simultaneously drive the driving wheel 142 to rotate, thereby driving the gear plate 12 to rotate, thereby adjusting the nacelle azimuth angle.

[0043] Cleaning phase: During yaw system operation, monitoring assembly 22 continuously collects information on the tooth surface status. If the tooth surface contamination level exceeds a set threshold, monitoring personnel periodically activate connecting assembly 24 based on the collected information. Connecting assembly 24 causes cleaning assembly 25 to descend and extend, bringing it closer to the tooth surface. Cleaning assembly 25 rotates via motor 141, ensuring that its cleaning surface is in complete contact with the tooth surface. A scraper is then applied to the tooth surface of sprocket disc 12, removing debris from the tooth grooves. During the cleaning process, the monitoring assembly provides feedback on the cleaning effect to ensure that the cleaning quality meets the standards. Upon completion, the cleaning assembly returns to its initial position, without affecting yaw motion.

[0044] In summary, this device realizes online cleaning of the yaw gear, reducing downtime for maintenance; improves the yaw response speed and transmission efficiency, and enhances the operational stability of the unit; prolongs the life of key components of the yaw system and reduces the failure rate.

[0045] Reference Figure 2 and Figure 4 As an optional embodiment, the monitoring assembly 22 includes a monitoring body 221 fixedly mounted on 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 from 6063T5 aluminum alloy extrusion, with an anodized surface for enhanced corrosion resistance. The monitoring body 221 is fixed to the bottom of the mounting ring 21 using a set of M12×50 bolts. The mounting surface is parallel to the toothed disc 12, ensuring that the monitoring direction is perpendicular to the tooth surface.

[0047] Preferably, the monitoring body 221 internally integrates the following functional modules: Infrared ranging sensor: The transmitting end and the receiving end are symmetrically arranged on both sides of the shell, and are used to measure the thickness accuracy of the oil scale on the tooth surface of the gear disc in real time.

[0048] ±0.05mm. Pressure sensor: Embedded in the bottom of the monitoring body, it measures the contact pressure between the limit wheel 222 and the tooth surface with a range of 0 to 50N. Camera module: Equipped with a waterproof housing and LED fill light, it sends the tooth surface image 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 is made of a polyurethane elastomer with a Shore hardness of 85A and a metal wheel core. The surface is engraved with anti-slip grooves to enhance friction performance. The limiting wheel 222 is hinged to the end of the monitoring body 221 through a rotating joint. The rotating joint includes a bearing seat and a ball bearing, allowing the limiting wheel to swing within a range of ±15° to adapt to the adaptive fit after the tooth surface is tilted or worn. When the limiting wheel 222 contacts the tooth groove of the toothed disc 12, the contact force is fed back through the pressure sensor 221b. The controller dynamically adjusts the position of the limiting wheel according to the preset threshold value of 1030N to ensure stable fit of the cleaning component 25.

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

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

[0052] In one embodiment provided in the present application, the cleaning assembly 25 includes a coupling member 251 engaged on one side of the driving wheel 142 , a scraper member 252 connected to one side of the coupling member 251 , and a collecting member 253 disposed on one side of the scraper member 252 .

[0053] In one embodiment provided in the present application, the coupling member 251 includes a transmission wheel 2511 engaged with one side of the driving wheel 142, an upper wheel disc 2512 engaged 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.

[0054] In one embodiment provided in the present application, the upper wheel disc 2512 and the lower wheel disc 2513 have the same structure and are mirror-imaged.

[0055] A tooth surface 31 is provided on one side adjacent to the upper wheel disc 2512 and the lower wheel disc 2513 , and a compression spring 32 is fixedly connected thereto.

[0056] In one embodiment provided in the present application, the lifting member 242 includes a lifting rod 2421 threadedly connected to the outside of the adjustment rod 243, and a clamping rod 2422 slidably sleeved on the outside of the lifting rod 2421;

[0057] There are convex columns M on both sides of the lifting rod 2421;

[0058] A limiting slot N is defined on the engaging rod 2422 .

[0059] In one embodiment provided in the present application, the scraper member 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 the present application, the collecting member 253 includes an arc plate 2531 fixedly disposed on the outer bottom of the lifting rod 2421 .

[0061] In this embodiment, Figure 5 and Figure 6 As shown, the inner wall of the retaining 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 guide groove depth, ensuring that the lifting member 242 remains axially fixed when the mounting ring 21 moves with the nacelle 11.

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

[0063] Better, such as Figure 7 As shown, the lifting member 242 is composed of a clamping rod 2422 sleeved in the inner wall of the limiting ring 241, and a lifting rod 2421 slidingly and radially limitedly connected to the inner wall of the clamping rod 2422. Among them, the clamping rod 2422 and the lifting rod 2421 are both hollow inside, which is convenient for sleeve connection.

[0064] Specifically, such as Figure 7 As shown, the bosses M on both sides of the lifting rod 2421 form a clearance fit with the limiting slots N at the bottom of the connecting rod 2422, allowing the lifting rod 2421 to slide vertically while limiting its rotational freedom. When the lifting rod 2421 moves downward to the upper end surface of the upper wheel disc 2512, it presses the upper wheel disc 2512 downward, allowing it to mate with the toothed surface of the lower wheel disc 2513, thus achieving a tightly coupled transmission.

[0065] The threaded hole on the inner wall of lifting rod 2421 directly engages with the outer thread of adjusting rod 243. When adjusting rod 243 rotates, it drives lifting rod 2421 up and down. The lead angle of the thread pair is designed to be 5 degrees, ensuring self-locking properties and preventing accidental sliding due to gravity.

[0066] A hexagonal manual crank is welded to the end of the adjusting rod 243, and the operator drives the threaded pair by rotating the crank. The crank and the adjusting rod 243 are connected by a key 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 a straight tooth meshing, with the tooth contact line length accounting for 80% of the tooth width, ensuring smooth power transmission. The other side of the transmission wheel 2511 meshes with the coupling 251, which is coupled to the upper wheel disc 2512 and the 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 unaffected by the upper wheel disc 2512. Conversely, if changes in the upper wheel disc 2512 significantly affect 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 disc 2512 and the lower wheel disc 2513 have identical structures and are mirror images. Therefore, the protruding tooth surfaces 31 of the upper and lower wheel discs 2512 and 2513 are positioned opposite each other, and the adjacent tooth surfaces 31 are elastically connected by a compression spring 32. The ends of the compression spring 32 are respectively fixed in grooves in the upper and lower wheel discs 2512 and 2513, forming a flexible transmission chain driven by preload force. The tooth surfaces 31 adopt a staggered tooth design, with adjacent tooth peaks and valleys staggered to ensure maximum contact area during elastic meshing and reduce local stress concentration.

[0069] When the adjusting rod 243 rotates and drives the lifting rod 2421 to move downward, the bosses M on both sides of the lifting rod 2421 move downward to the upper end surface of the upper wheel disc 2512, and then press the upper wheel disc 2512 downward to make it cooperate with the tooth surface 31 of the lower wheel disc 2513 to achieve a tightly coupled transmission while compressing the compression spring 32.

[0070] The upper wheel disc 2512 and the lower wheel disc 2513 are both connected to the bearing seat of the clamping rod 2422 through deep groove ball bearings in the inner wall, allowing the upper wheel disc 2512 and the lower wheel disc 2513 to rotate freely on the clamping rod 2422. Among them, the upper and lower ends of the lower wheel disc 2513 are horizontally limited on the clamping rod 2422 and cannot move up and down. The upper wheel disc 2512 is always engaged with the transmission wheel 2511 on one side of it, and the transmission wheel 2511 is always engaged with the driving wheel 142. When the upper wheel disc 2512 and the lower wheel disc 2513 are tightly coupled together, the upper gear disc 2512 will follow the driving wheel 142 to rotate without load, and will not cause the motor 141 to overload and increase its operating burden.

[0071] Furthermore, the scraper member 252 is directly engaged with the gear surface of the lower wheel disc 2513, so that the lower wheel disc 2513 rotates along with the upper wheel disc 2412, and the scraper member 252 moves forward and backward in the direction of the axis extension, so that the cleaning surface is completely in contact with or away from the tooth surface.

[0072] like Figure 5 and Figure 6As shown, the scraper member 252 comprises a sliding plate 2521 slidably 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 downwardly to the bottom of the mounting ring 21, through which the sliding plate 2521 can be slidably connected to the mounting ring 21. A sliding groove is provided through the side of the sliding plate 2521, and the straight plate surface of the rack 2522 is slidably connected to the sliding plate 2521 through the notch, and the teeth of the rack 2522 mesh with the teeth of the lower wheel disc 2513.

[0073] Secondly, the end of the rack 2522 is connected to a spring 2523 via a pin, and the other end of the spring 2523 is fixed to the inside of the sliding plate 2521. Therefore, when the rack 2522 and the lower wheel disc 2513 are in motion, the elastic action of the spring 2523 elastically pushes the sliding plate 2521, causing its scraper 2524 to always elastically adhere to the tooth surface of the toothed disc 12. The spring 2523 also provides a reset force for the scraper 2524, causing it to disengage from the toothed disc 12 surface when no external force is applied.

[0074] When the upper wheel disc 2512 is pressed down by the boss M, tightly coupling it with the lower wheel disc 2513, the lower wheel disc 2513 rotates along with the upper wheel disc 2512, driving the rack 2522 to move along the axis of the toothed disc 12, eventually approaching the tooth groove of the toothed disc 12. During the movement of the rack 2522, the spring 2523 on one side of the rack 2522 pushes the sliding plate 2521 and the scraper 2524 connected to the end face of the sliding plate 2521 by a pin into the tooth groove of the toothed disc 12. When the scraper 2524 fits into the tooth groove of the toothed disc 12, the spring 2523 is compressed, preventing overload between the rack 2522 and the lower wheel disc 2513.

[0075] When the upper wheel disc 2512 is released from the pressure of the boss M and descends, the upper wheel disc 2512 is reset by the compression spring 32, so that the upper wheel disc 2512 and the lower wheel disc 2513 are decoupled. At this time, the toothed disc 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 to reset it.

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

[0077] Better, such as Figure 6As shown, the arc plate 2531 is fixedly mounted on the outer bottom of the lifting rod 2421. Its curvature radius matches the tooth grooves of the gear plate 12. After following the lifting rod 2421 downward, it will fit against the end of the tower 13, forming a closed waste collection chamber. As the lifting rod 2421 revolves around the gear plate 12, the oil and dirt attached to the inner grooves of the scraper 2524 above are scraped and collected, making it easier for maintenance personnel to collect and clean them.

[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 member 251 in the cleaning assembly 25 adopts a mirror-image staggered tooth surface design of the upper wheel disc 2512 and the lower wheel disc 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 driving wheel 142, but also drives the flexible transmission chain through the preload force of the compression spring 32, synchronously driving the scraper member 252 to move when the yaw system is operating. The rack 2522 and the sliding plate 2521 of the scraper member 252 are elastically reset by the spring 2523, ensuring that the scraper 2524 always fits the tooth groove. Even when the tooth surface is tilted or oil and dirt accumulate, clean contact can be maintained, avoiding insufficient scraping force or local overload. In addition, the arc-shaped diversion design of the arc plate 2531 matches the tooth groove of the tooth disc 12 to form a closed waste collection chamber, effectively preventing the spread of waste during the cleaning process and improving collection efficiency.

[0079] Finally, it should be pointed out 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 without departing from the scope of the present invention.

Claims

1. A fan yaw gear cleaning device, characterized in that: include, A cabin unit (1) comprises a cabin (11), a gear wheel (12) hinged at the bottom axis of the cabin (11), a tower (13) fixedly arranged at the bottom axis of the gear wheel (12), and a driving member (14) circumferentially arranged at the bottom axis of the cabin (11); A cleaning unit (2) is provided on the inner peripheral side of the toothed disc (12), the cleaning unit (2) comprising a mounting ring (21) fixedly provided on the bottom peripheral side of the cabin (11), a monitoring assembly (22) fixedly provided on the bottom peripheral side of the mounting ring (21), a plurality of connecting assemblies (24) fixedly provided on the peripheral side of the mounting ring (21), and a cleaning assembly (25) hinged at the bottom axis of the connecting assembly (24).

2. The fan yaw gear cleaning device according to claim 1, characterized in that: The cabin (11) includes a bottom plate (111) arranged at the bottom thereof; The driving member (14) comprises a plurality of motors (141) fixedly positioned on the circumference of the bottom plate (111), and a driving wheel (142) fixedly arranged at the axis of the motor (141).

3. The fan yaw gear cleaning device according to claim 2, characterized in that: The monitoring assembly (22) comprises a monitoring body (221) fixedly mounted on the bottom of the mounting ring (21), and a limiting wheel (222) arranged at the end of the monitoring body (221).

4. The fan yaw gear cleaning device according to claim 3, characterized in that: The connecting assembly (24) comprises a limiting ring (241) fixedly sleeved on the mounting ring (21) and the base plate (111), a lifting member (242) slidably embedded in the inner wall of the limiting ring (241), and an adjusting rod (243) threadedly connected to the inner wall of the lifting member (242).

5. The fan yaw gear cleaning device according to claim 4, characterized in that: The cleaning assembly (25) comprises a coupling member (251) engaged with one side of the driving wheel (142), a scraper member (252) connected to one side of the coupling member (251), and a collecting member (253) arranged on one side of the scraper member (252).

6. The fan yaw gear cleaning device according to claim 5, characterized in that: The coupling member (251) includes a transmission wheel (2511) meshed with one side of the driving wheel (142), an upper wheel disc (2512) meshed 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).

7. The fan yaw gear cleaning device according to claim 6, characterized in that: The upper wheel disc (2512) and the lower wheel disc (2513) have the same structure and are arranged in a mirror image; A tooth surface (31) is provided on one side of the upper wheel disc (2512) adjacent to the lower wheel disc (2513), and a compression spring (32) is fixedly connected thereto.

8. The fan yaw gear cleaning device according to claim 7, characterized in that: The lifting member (242) includes a lifting rod (2421) threadedly connected to the outside of the adjusting rod (243), and a clamping rod (2422) slidably sleeved on the outside of the lifting rod (2421); The lifting rod (2421) is provided with convex columns (M) on both sides of the rod body; The clamping rod (2422) is provided with a limiting slot (N).

9. The fan yaw gear cleaning device according to claim 8, characterized in that: The scraper member (252) comprises 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).

10. The fan yaw gear cleaning device according to claim 9, characterized in that: The collecting member (253) includes an arc plate (2531) fixedly arranged at the outer bottom of the lifting rod (2421).

Images