A yawing gear assembly for a wind turbine

Abstract

The application discloses a yaw gear ring assembly for a wind driven generator and relates to the application field of a yaw system of a wind driven generator. The yaw gear ring assembly comprises a gear ring, a mounting cover and a gear box. The mounting cover is movably arranged on the inner wall of the gear ring. A plurality of gear boxes are arranged on the outer wall of the mounting cover. An adsorption plate is arranged in each of the plurality of gear boxes. An electromagnetic plate is arranged in each of the plurality of adsorption plates. The adsorption plate is arranged on the gear ring. The electromagnetic plate in the adsorption plate is in an energized state for a long time. The adsorption plate generates magnetic force. The iron filings mixed in the lubricating oil are displaced to the adsorption plate under the influence of the magnetic force and then adhere to the outer wall of the upper end of the adsorption plate. The damage of the gear ring and the plurality of yaw gears caused by the mixture of the iron filings and the lubricating oil is avoided. The use effect of the lubricating oil is improved. The service life of the gear ring assembly is prolonged.

Description

Technical Field

[0001] This invention relates to the field of yaw systems for wind turbines, specifically to a yaw gear assembly for wind turbines. Background Technology

[0002] A wind turbine is a device that converts wind energy into electrical energy. When wind blows over the blades of the wind turbine, the blades rotate due to the force of the airflow, converting wind energy into mechanical energy. The power of the wind turbine's rotation is transmitted to the rotor of the generator through the wind turbine shaft. The magnetic field generated by the rotor's rotation passes through the coils, generating electrical energy according to the law of electromagnetic induction.

[0003] The yaw system of a wind turbine, also known as the wind alignment system, is a core auxiliary system that ensures the wind turbine is always precisely aligned with the wind direction to maximize wind energy capture. It is mainly installed between the bottom of the nacelle and the top of the tower and is a key hub connecting the fixed tower and the rotating nacelle. Its performance directly affects the power generation efficiency, operational stability, and service life of core components (such as yaw gear rings and bearings) of the wind turbine. To extend the life of the yaw system, regular maintenance is required. Every three to six months, special grease should be added to the yaw bearings and yaw gear rings to avoid dry friction.

[0004] In existing technologies, after long-term use, the lubricating oil of the yaw gear assembly will contain a large amount of wear debris. This debris acts as an abrasive, aggravating wear on the gear surface during meshing with the drive gear, reducing the lifespan of the gear, and increasing equipment replacement costs. Furthermore, the mixture of debris and deteriorated lubricating oil alters the properties of the lubricating oil, reducing its lubrication and heat dissipation functions. This may lead to increased frictional resistance during yaw system operation, slow yaw response, and affect the wind turbine's tracking efficiency, thereby reducing power generation. Therefore, staff will clean the debris, but this is difficult and requires a lot of manpower, resources, and time for cleaning and maintenance. Moreover, damage to components caused by the inability to clean debris in a timely manner will further increase the cost of repair and replacement parts. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a yaw gear assembly for wind turbines to solve the technical problems in the background art mentioned above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a yaw gear ring assembly for a wind turbine, comprising a gear ring, a mounting cover, and a gearbox, wherein the mounting cover is movably mounted on the inner wall of the gear ring, and multiple gearboxes are mounted on the outer wall of the mounting cover; Each of the multiple sets of gearboxes is equipped with a yaw motor at its bottom end, and each of the multiple sets of yaw motors is equipped with a yaw shaft at its output end. Each of the multiple sets of yaw shafts extends into the interior of the multiple sets of gearboxes and is equipped with a yaw gear at one end. Furthermore, each of the multiple sets of yaw gears is meshed with a gear ring. Each of the gearboxes is equipped with an adsorption plate, and the adsorption plates are arranged in a "U" shape. Each of the adsorption plates is equipped with an electromagnetic plate.

[0007] By adopting the above technical solution, the problem of iron filings mixed with lubricating oil affecting the service life of the gear ring assembly is solved. After long-term use, the gear ring and multiple yaw gears will experience wear during meshing. The wear debris mixes into the lubricating oil. The electromagnetic plates inside the multiple adsorption plates are constantly energized, so the multiple adsorption plates generate magnetic force. The iron filings mixed with the lubricating oil are displaced towards the adsorption plates under the influence of the magnetic force and then adhere to the outer wall of the upper part of the adsorption plates. This avoids damage to the gear ring and multiple yaw gears caused by the mixing of iron filings and lubricating oil, and improves the performance of the lubricating oil, thereby extending the service life of the gear ring assembly.

[0008] The present invention is further configured such that each of the multiple sets of gearboxes is equipped with an installation chamber at one end, each of the multiple sets of gearboxes has a reserved opening at one end, and the multiple reserved openings are respectively connected to the multiple sets of installation chambers. Each of the multiple sets of adsorption plates is equipped with an installation plate at one end extending into the reserved opening, and each of the multiple sets of installation plates is equipped with two sets of limiting blocks at one end extending into the outer wall of the multiple sets of reserved openings.

[0009] Preferably, the reserved opening connects the mounting compartment to the gearbox, and when the mounting plate is inside the reserved opening, the reserved opening is closed to prevent lubricating oil from leaking out.

[0010] The present invention is further configured such that two sets of limiting shafts are movably installed inside each of the multiple sets of installation chambers, and the two sets of limiting shafts are connected by a toothed synchronous belt. A drive motor is installed at one end of each of the multiple sets of installation chambers, and the output end of the drive motor is connected to the multiple sets of limiting shafts respectively. The outer wall of each of the multiple sets of limiting shafts is threadedly connected to the inner wall of each of the multiple sets of limiting blocks.

[0011] Preferably, the drive motor starts at a time and drives a set of limit shafts to rotate. The two sets of limit shafts are connected by a toothed synchronous belt, so the two sets of limit shafts rotate synchronously. The outer walls of the two sets of limit shafts are threadedly connected to the inner walls of the two sets of limit blocks, so the two sets of limit blocks are displaced, thereby driving the mounting plate to move.

[0012] The present invention is further configured such that each of the multiple sets of installation chambers is equipped with two sets of fixing columns, and each of the multiple sets of fixing columns is equipped with a magnet at one end; each of the multiple sets of installation plates is provided with two sets of reserved holes, and the multiple sets of fixing columns correspond to the multiple sets of reserved holes; each of the multiple sets of installation plates is movably equipped with a scraper on one side, and the inner wall of each of the multiple sets of scrapers is equipped with a magnetic block that matches the magnetic block at one end of the fixing column; and the inner wall of each of the multiple sets of installation plates is equipped with a magnetic block that matches the magnetic block inside the multiple sets of scrapers.

[0013] Preferably, the mounting plate moves the adsorption plate and the scraper. One end of each of the two sets of fixing columns passes through two sets of pre-drilled holes in the mounting plate. The magnetic blocks at one end of each of the two sets of fixing columns attract the magnetic blocks inside the scraper, so that one end of each of the two sets of fixing columns connects to the outer wall of one side of the scraper. The two sets of fixing columns block the scraper, causing the scraper to stop moving. The adsorption plate continues to move, and the scraper scrapes the iron filings adsorbed on the upper part of the adsorption plate, causing the iron filings to separate from the adsorption plate.

[0014] The present invention is further configured such that one side of the plurality of scrapers is arranged in an arc shape, and the arc-shaped end of the scraper is arranged at an angle.

[0015] Preferably, when the scraper removes iron filings, the iron filings move towards the center of the scraper to prevent them from accumulating on the upper part of the adsorption plate.

[0016] The present invention is further configured such that a toothed plate is installed at one end of each of the multiple sets of mounting plates, a drive shaft is movably installed on the inner wall of each of the multiple sets of mounting chambers, a drive gear is installed at one end of each of the multiple sets of drive shafts, and the multiple sets of drive gears extend into the interior of the mounting chamber and respectively mesh with the multiple sets of toothed plates.

[0017] Preferably, the mounting plate moves, causing the toothed plate to shift. After the toothed plate moves to the side of the transmission gear, it meshes with the transmission gear, causing the transmission gear to rotate, thereby causing the transmission shaft to rotate.

[0018] The present invention is further configured such that each of the multiple sets of gearbox inner walls is movably mounted with a movable shaft, and the multiple sets of movable shafts are respectively connected to the multiple sets of transmission shafts by a toothed synchronous belt; each of the multiple sets of gearbox inner walls is movably mounted with two sets of connecting shafts, and the two sets of connecting shafts are connected to the two sets of connecting shafts by a toothed synchronous belt; wherein the multiple sets of connecting shafts are respectively connected to the multiple sets of movable shafts by a toothed synchronous belt; and each of the multiple sets of reserved openings has a baffle movably mounted on its upper end, and the inner wall of the multiple sets of baffles is respectively threaded to the outer wall of the multiple sets of connecting shafts.

[0019] Preferably, the drive shaft rotates, and the drive shaft is connected to the movable shaft by a toothed synchronous belt. Therefore, the movable shaft rotates, and the movable shaft is connected to a set of connecting shafts by a toothed synchronous belt. The set of connecting shafts rotates, and the two sets of connecting shafts are connected by a toothed synchronous belt. The outer walls of the two sets of connecting shafts are displaced relative to the inner wall of the baffle, and the baffle is displaced.

[0020] The present invention is further configured such that a first collection box is installed at the bottom of each of the multiple sets of installation chambers, and multiple sets of filter plates are installed inside each of the multiple sets of first collection boxes, and the multiple sets of filter plates are arranged in a stepped manner. A guide plate is installed inside each of the multiple sets of first collection boxes, and the multiple sets of guide plates are respectively located at the lower end of the multiple sets of filter plates.

[0021] Preferably, the iron filings and some of the lubricating oil fall into the first collection box. The lubricating oil falls directly through multiple sets of filter plates to the upper part of the guide plate, and then through the guide plate to the lubricating oil collection area inside the first collection box. After the iron filings fall to the upper part of one set of filter plates, they slide down. Since the multiple sets of filter plates are arranged in a stepped manner, when the iron filings are displaced through the multiple sets of filter plates, the lubricating oil adhering to the outer wall of the iron filings separates from the iron filings and falls through the multiple sets of filter plates to the upper part of the guide plate. The guide plate guides the lubricating oil to the lubricating oil collection area inside the first collection box.

[0022] The present invention is further configured such that auxiliary plates are installed on the outer walls of multiple sets of first collection boxes, brackets are symmetrically installed at the bottom of multiple sets of installation chambers, and the cross-sections of multiple sets of brackets are all "L"-shaped, second collection boxes are movably installed at the bottom of multiple sets of installation chambers, and the inlet of the second collection box is connected to the outlet of the first collection box, convex plates are symmetrically installed on the outer walls of multiple sets of second collection boxes, and the outer walls of multiple sets of convex plates are movably connected to the inner walls of multiple sets of brackets, and grooves are opened at the bottom of multiple sets of second collection boxes, and the inner walls of multiple sets of grooves are movably connected to the outer walls of multiple sets of auxiliary plates.

[0023] Preferably, the iron filings slide down through multiple sets of filter plates into the interior of the second collection box, and multiple sets of brackets and multiple sets of convex plates cooperate to install the second collection box. Multiple sets of grooves cooperate with multiple sets of auxiliary plates to improve the stability of the multiple sets of second collection boxes after installation.

[0024] The present invention is further configured such that each of the multiple sets of the first collection tanks is equipped with a liquid guiding pump, each of the multiple sets of liquid guiding pumps has a suction pipe installed at its inlet, each of the multiple sets of liquid guiding pumps has an outlet pipe installed at its outlet, and one end of each of the multiple sets of outlet pipes extends into the interior of multiple sets of gearboxes. Each of the multiple sets of gearboxes is equipped with a monitoring device, and each of the multiple sets of monitoring devices is electrically connected to the multiple sets of liquid guiding pumps.

[0025] Preferably, after the gearbox internal monitoring device detects the lubricating oil content inside the gearbox, if it finds that the lubricating oil content is low, the monitoring device starts the liquid transfer pump. The liquid transfer pump absorbs the lubricating oil inside the first collection tank through the suction pipe and inputs the lubricating oil into the gearbox through the outlet pipe.

[0026] In summary, the present invention has the following main beneficial effects: 1. This invention solves the problem of iron filings mixing with lubricating oil and affecting the service life of the gear ring assembly by incorporating adsorption plates. After long-term use, the gear ring and multiple yaw gears will experience wear during meshing. The resulting wear debris mixes with the lubricating oil. The electromagnetic plates inside the multiple adsorption plates are constantly energized, thus generating magnetic force. The iron filings mixed with the lubricating oil are displaced towards the adsorption plates by the magnetic force and then adhere to the upper outer wall of the adsorption plates. This prevents the iron filings from mixing with the lubricating oil and causing damage to the gear ring and multiple yaw gears, and improves the lubricating oil's performance, thereby extending the service life of the gear ring assembly.

[0027] 2. This invention comprises an installation chamber, fixed columns, an installation plate, and a scraper. After the adsorption plate absorbs iron filings inside the lubricating oil for a period of time, the installation plate shifts, causing the adsorption plate and scraper to move into the installation chamber. One end of each of the two sets of fixed columns passes through two pre-drilled holes in the installation plate. The magnetic blocks at one end of each set of fixed columns attract the magnetic blocks inside the scraper, connecting one end of each set of fixed columns to the outer wall of one side of the scraper. The two sets of fixed columns obstruct the scraper, stopping its movement, while the adsorption plate continues to shift. The scraper scrapes the iron filings adsorbed on the upper part of the adsorption plate, causing the iron filings to separate from the adsorption plate and fall into the first collection box. After the adsorption plate enters the installation chamber, the electromagnetic plate inside the adsorption plate closes, causing the iron filings remaining on the side wall of the adsorption plate to lose their magnetic force and fall into the installation chamber and the first collection box. After the iron filings on the outer wall of the adsorption plate are cleaned, they return to the gearbox, ensuring that the adsorption plate maintains its attraction to iron filings over a long period, further improving the cleaning effect of iron filings inside the lubricating oil. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the gear ring assembly in this invention; Figure 2 This is a schematic diagram of the gear ring in this invention; Figure 3 This is a schematic diagram of the mounting cover in this invention; Figure 4 This is a schematic diagram of the yaw gear in the present invention; Figure 5 This is a schematic diagram of the gearbox in this invention; Figure 6 This is a sectional view of the gearbox in this invention; Figure 7 This is a schematic diagram of the internal structure of the installation compartment in this invention; Figure 8 This is a schematic diagram of the adsorption plate in this invention; Figure 9 This is an exploded view of the adsorption plate in this invention; Figure 10 This is a schematic diagram of the baffle in the present invention; Figure 11 This is a schematic diagram of the installation compartment in this invention; Figure 12 This is a cross-sectional view of the installation compartment in this invention; Figure 13 This is a schematic diagram of the first collection box in this invention; Figure 14 This is a cross-sectional view of the first collection box in this invention; Figure 15 This is a schematic diagram of the second collection box in the present invention; Figure 16 This is a plan view showing the connection between the first collection box and the second collection box in this invention.

[0029] Explanation of reference numerals in the attached figures: 1. Gear ring; 2. Mounting cover; 3. Gearbox; 4. Yaw motor; 5. Yaw shaft; 6. Yaw gear; 7. Reserved opening; 8. Adsorption plate; 9. Mounting plate; 10. Gear plate; 11. Limiting block; 12. Scraper; 13. Drive motor; 14. Limiting shaft; 15. Mounting chamber; 16. Fixed column; 17. Bracket; 18. Transmission shaft; 19. Transmission gear; 20. Movable shaft; 21. Linkage shaft; 22. Baffle; 23. First collection box; 24. Filter plate; 25. Guide plate; 26. Liquid pump; 27. Suction pipe; 28. Discharge pipe; 29. ​​Auxiliary plate; 30. Second collection box; 31. Protruding plate; 32. Groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The embodiments of the present invention will now be described.

[0032] A yaw gear assembly for a wind turbine generator, please refer to [link / reference]. Figure 1 - Figure 16 It includes a gear ring 1, a mounting cover 2 and a gearbox 3. The mounting cover 2 is movably installed on the inner wall of the gear ring 1, and multiple gearboxes 3 are installed on the outer wall of the mounting cover 2. Each of the multiple gearboxes 3 has a yaw motor 4 installed at its bottom. Each of the multiple yaw motors 4 has a yaw shaft 5 installed at its output end. Each of the multiple yaw shafts 5 extends into the interior of the multiple gearboxes 3 and has a yaw gear 6 installed at one end. Each of the multiple yaw gears 6 is meshed with the gear ring 1. If the wind direction changes, the sensing device will start the multiple yaw motors 4, which will drive the multiple yaw shafts 5 to rotate, thereby driving the multiple yaw gears 6 to rotate. Since each of the multiple yaw gears 6 is meshed with the gear ring 1, the gear ring 1 will rotate, thereby driving the multiple blades to move. Each of the multiple gearboxes 3 has an adsorption plate 8 installed inside, and the multiple adsorption plates 8 are all arranged in a "U" shape. Each of the multiple adsorption plates 8 has an electromagnetic plate inside. The electromagnetic plates inside the multiple adsorption plates 8 are always energized, so the multiple adsorption plates 8 generate magnetic force. Iron filings mixed in the lubricating oil are affected by the magnetic force and move towards the adsorption plate 8, and then adhere to the upper outer wall of the adsorption plate 8.

[0033] Please see Figure 5 - Figure 7 Each of the multiple gearboxes 3 has an installation chamber 15 installed at one end, and each of the multiple gearboxes 3 has a reserved opening 7 at one end. The multiple reserved openings 7 are connected to the multiple installation chambers 15 respectively. Each of the multiple adsorption plates 8 has an installation plate 9 installed at one end extending into the reserved opening 7. Each of the multiple installation plates 9 has two sets of limiting blocks 11 installed at one end extending into the outer wall of the multiple reserved openings 7. The reserved opening 7 connects the installation chamber 15 to the gearbox 3. When the installation plate 9 is inside the reserved opening 7, it closes the reserved opening to prevent lubricating oil from leaking out.

[0034] Please see Figure 7 - Figure 8 Each of the multiple installation chambers 15 has two sets of limiting shafts 14 movably installed inside, and the two sets of limiting shafts 14 are connected by a toothed synchronous belt. Each of the multiple installation chambers 15 has a drive motor 13 installed at one end, and the output end of the drive motor 13 is connected to the multiple sets of limiting shafts 14 respectively. The outer walls of the multiple sets of limiting shafts 14 are threadedly connected to the inner walls of the multiple sets of limiting blocks 11 respectively. The drive motor 13 starts at regular intervals, driving one set of limiting shafts 14 to rotate. The two sets of limiting shafts 14 are connected by a toothed synchronous belt, so the two sets of limiting shafts 14 rotate synchronously. The outer walls of the two sets of limiting shafts 14 are threadedly connected to the inner walls of the two sets of limiting blocks 11 respectively, so the two sets of limiting blocks 11 are displaced, thereby driving the installation plate 9 to move.

[0035] Please see Figure 7 - Figure 12Each of the multiple installation chambers 15 has two sets of fixing columns 16 installed inside, and each of the multiple sets of fixing columns 16 has a magnet installed at one end. Each of the multiple installation plates 9 has two sets of reserved holes, and the multiple sets of fixing columns 16 correspond to the multiple sets of reserved holes. Each of the multiple installation plates 9 has a scraper 12 movably installed on one side, and the inner wall of each of the multiple sets of scrapers 12 has a magnetic block that matches the magnetic block at one end of the fixing column 16. The inner wall of each of the multiple sets of installation plates 9 has a magnetic block that matches the magnetic block inside the multiple sets of scrapers 12. The installation plate 9 drives the adsorption plate 8. The scraper 12 is displaced, and one end of each of the two sets of fixing columns 16 passes through the two sets of reserved holes in the mounting plate 9. The magnetic blocks at one end of each of the two sets of fixing columns 16 attract the magnetic blocks inside the scraper 12, so that one end of each of the two sets of fixing columns 16 is connected to the outer wall of one side of the scraper 12. The two sets of fixing columns 16 block the scraper 12, so that the scraper 12 stops displacing, and the adsorption plate 8 continues to displace. The scraper 12 scrapes the iron filings adsorbed on the upper end of the adsorption plate 8, so that the iron filings are separated from the adsorption plate 8.

[0036] Please see Figure 8 - Figure 9 Multiple sets of scrapers 12 are arranged in an arc shape on one side, and the arc end of the scraper 12 is inclined. When the scraper 12 scrapes off the iron filings, the iron filings move towards the central area of ​​the scraper 12 to avoid the iron filings accumulating on the upper part of the adsorption plate.

[0037] Please see Figure 8 - Figure 12 Each of the multiple mounting plates 9 has a toothed plate 10 mounted on one end, and each of the multiple mounting chambers 15 has a drive shaft 18 movably mounted on the inner wall. Each of the multiple drive shafts 18 has a drive gear 19 mounted on one end, and the multiple drive gears 19 extend into the interior of the mounting chamber 15 and are respectively engaged with the multiple toothed plates 10. When the mounting plate 9 moves, it causes the toothed plate 10 to move. After the toothed plate 10 moves to the side of the drive gear 19, the toothed plate 10 engages with the drive gear 19, causing the drive gear 19 to rotate, thereby causing the drive shaft 18 to rotate.

[0038] Please see Figure 5 - Figure 12Each of the multiple gearboxes 3 has a movable shaft 20 movably mounted on its inner wall, and each of the multiple movable shafts 20 is connected to a multiple set of transmission shafts 18 by a toothed synchronous belt. Each of the multiple gearboxes 3 also has two sets of connecting shafts 21 movably mounted on its inner wall, and each of the two sets of connecting shafts 21 is connected to a toothed synchronous belt. Each of the multiple connecting shafts 21 is connected to a multiple set of movable shafts 20 by a toothed synchronous belt. Each of the multiple reserved openings 7 has a baffle 22 movably mounted on its upper end, and the inner walls of the multiple baffles 22 are connected to multiple... The outer wall of the connecting shaft 21 is threaded, and the transmission shaft 18 rotates. The transmission shaft 18 is connected to the movable shaft 20 by a toothed synchronous belt, so the movable shaft 20 rotates. The movable shaft 20 is connected to the first set of connecting shafts 21 by a toothed synchronous belt, so the first set of connecting shafts 21 rotates. The two sets of connecting shafts 21 are connected by a toothed synchronous belt, so the two sets of connecting shafts 21 rotate. The outer walls of the two sets of connecting shafts 21 are displaced relative to the inner wall of the baffle 22, so the baffle 22 is displaced.

[0039] Please see Figure 6 - Figure 16 Each of the multiple installation chambers 15 has a first collection box 23 installed at its bottom. Each of the multiple first collection boxes 23 has multiple filter plates 24 installed inside, and the multiple filter plates 24 are arranged in a stepped manner. Each of the multiple first collection boxes 23 has a guide plate 25 installed inside, and the multiple guide plates 25 are respectively located at the lower end of the multiple filter plates 24. Iron filings and some lubricating oil fall into the first collection box 23. The lubricating oil falls directly through the multiple filter plates 24 to the upper end of the guide plate 25, and then falls through the guide plate 25 to the lubricating oil collection area inside the first collection box 23. After the iron filings fall to the upper end of the filter plate 24, they slide down. Since the multiple filter plates 24 are arranged in a stepped manner, when the iron filings are displaced through the multiple filter plates, the lubricating oil adhering to the outer wall of the iron filings separates from the iron filings and falls through the multiple filter plates 24 to the upper end of the guide plate 25. The guide plate 25 guides the lubricating oil to the lubricating oil collection area inside the first collection box 23.

[0040] Please see Figure 11 - Figure 15Each of the multiple sets of first collection boxes 23 has an auxiliary plate 29 installed on its outer wall. Each of the multiple sets of installation chambers 15 has a bracket 17 symmetrically installed at its bottom, and the cross-section of each of the multiple sets of brackets 17 is "L" shaped. Each of the multiple sets of installation chambers 15 has a second collection box 30 movably installed at its bottom, and the inlet of the second collection box 30 is connected to the outlet of the first collection box 23. Each of the multiple sets of second collection boxes 30 has a convex plate 31 symmetrically installed on its outer wall, and the outer wall of each of the multiple sets of convex plates 31 is movably connected to the inner wall of each of the multiple sets of brackets 17. Each of the multiple sets of second collection boxes 30 has a groove 32 at its bottom, and the inner wall of each of the multiple sets of grooves 32 is movably connected to the outer wall of each of the multiple sets of auxiliary plates 29. Iron filings slide down through multiple sets of filter plates 24 into the interior of the second collection box 30. The multiple sets of brackets 17 and multiple sets of convex plates 31 cooperate to install the second collection box 30. The multiple sets of grooves 32 cooperate with multiple sets of auxiliary plates 29 to improve the stability of the multiple sets of second collection boxes 30 after installation.

[0041] Please see Figure 13 - Figure 16 Each of the multiple sets of first collection tanks 23 is equipped with a liquid transfer pump 26. Each of the multiple sets of liquid transfer pump 26 has a suction pipe 27 installed at its inlet and a discharge pipe 28 installed at its outlet. One end of each of the multiple sets of discharge pipes 28 extends into the interior of the multiple sets of gearboxes 3. Each of the multiple sets of gearboxes 3 is equipped with a monitoring device, and each of the multiple sets of monitoring devices is electrically connected to the multiple sets of liquid transfer pumps 26. After the monitoring device inside the gearbox 3 detects the lubricating oil content inside the gearbox 3, if it finds that the lubricating oil content is low, the monitoring device starts the liquid transfer pump 26. The liquid transfer pump 26 absorbs the lubricating oil inside the first collection tank 23 through the suction pipe 27 and inputs the lubricating oil into the gearbox 3 through the discharge pipe 28.

[0042] The working principle of this invention is as follows: When using this gear ring assembly, if the wind direction changes, the sensing device starts multiple yaw motors 4, which drive multiple yaw shafts 5 to rotate, thereby driving multiple yaw gears 6 to rotate. All multiple yaw gears 6 are meshed with the gear ring 1, so the gear ring 1 rotates, thereby driving multiple blades to move and adjusting the multiple blades to maintain the effect of the blades being blown by the wind. After long-term use, the gear ring 1 and the multiple sets of yaw gears 6 will experience some wear during meshing. The wear debris will mix into the lubricating oil. The electromagnetic plates inside the multiple sets of adsorption plates 8 are in a state of continuous power supply, so the multiple sets of adsorption plates 8 generate magnetic force. The iron filings mixed in the lubricating oil are affected by the magnetic force and move towards the adsorption plate 8, and then adhere to the upper outer wall of the adsorption plate 8. This avoids damage to the gear ring 1 and the multiple sets of yaw gears 6 after the iron filings are mixed with the lubricating oil, and improves the performance of the lubricating oil. After the adsorption plate 8 absorbs the iron filings inside the lubricating oil for a period of time, the drive motor 13 starts at a timed interval, driving a set of limit shafts 14 to rotate. The two sets of limit shafts 14 are connected by a toothed synchronous belt, so the two sets of limit shafts 14 rotate synchronously. The outer walls of the two sets of limit shafts 14 are threadedly connected to the inner walls of the two sets of limit blocks 11, so the two sets of limit blocks 11 are displaced, thereby driving the mounting plate 9 to move, and then driving the adsorption plate 8 and the scraper 12 to move into the mounting chamber 15. When the mounting plate 9 moves the adsorption plate 8 and the scraper 12, one end of each of the two sets of fixing posts 16 passes through the two sets of reserved holes in the mounting plate 9. The magnetic blocks at one end of each of the two sets of fixing posts 16 attract the magnetic blocks inside the scraper 12, so that one end of each of the two sets of fixing posts 16 is connected to the outer wall of one side of the scraper 12. The two sets of fixing posts 16 block the scraper 12, so that the scraper 12 stops moving. When the scraper 12 stops moving, the adsorption plate 8 continues to move. The scraper 12 scrapes the iron filings adsorbed on the upper end of the adsorption plate 8, causing the iron filings to separate from the adsorption plate 8 and fall into the first collection box 23. When the adsorption plate 8 enters the installation chamber 15, the electromagnetic plate inside the adsorption plate 8 is turned off, so that the iron filings remaining on the side wall of the adsorption plate 8 lack magnetic force and fall into the installation chamber 15 and the first collection box 23. When the mounting plate 9 moves, it causes the toothed plate 10 to shift. After the toothed plate 10 moves to the side of the transmission gear 19, it meshes with the transmission gear 19, causing the transmission gear 19 to rotate. This, in turn, causes the transmission shaft 18 to rotate. The transmission shaft 18 is connected to the movable shaft 20 via a toothed synchronous belt, so the movable shaft 20 rotates. The movable shaft 20 is connected to a set of connecting shafts 21 via a toothed synchronous belt, so the set of connecting shafts 21 rotates. The two sets of connecting shafts 21 are connected via a toothed synchronous belt, so the two sets of connecting shafts 21 rotate. The outer walls of the two sets of connecting shafts 21 are displaced against the inner wall of the baffle 22, so the baffle 22 is displaced. After the adsorption plate 8 moves out of the gearbox 3, the baffle 22 closes the reserved opening 7 to prevent the lubricating oil from continuously flowing out and affecting the amount of lubricating oil inside the gearbox 3 and the mounting cover 2. When the iron filings and some lubricating oil fall into the first collection box 23, the lubricating oil falls directly through multiple sets of filter plates 24 to the upper end of the guide plate 25, and then falls through the guide plate 25 to the lubricating oil collection area inside the first collection box 23. After the iron filings fall to the upper end of a set of filter plates 24, they slide down. Since the multiple sets of filter plates 24 are arranged in a stepped manner, when the iron filings are displaced through the multiple sets of filter plates, the lubricating oil adhering to the outer wall of the iron filings separates from the iron filings and falls through the multiple sets of filter plates 24 to the upper end of the guide plate 25. The guide plate 25 guides the lubricating oil to the lubricating oil collection area inside the first collection box 23. The iron filings slide through the multiple sets of filter plates 24 into the second collection box 30. After the iron filings on the outer wall of the adsorption plate 8 are cleaned, the drive motor 13 starts, driving the mounting plate 9 and the adsorption plate 8 to reset. During the reset process, the mounting plate 9 drives the baffle 22 to move, opening the reserved opening 7. During the reset process, the adsorption plate 8 pushes the iron filings remaining in the mounting chamber 15, causing the iron filings to fall into the first collection box 23. Then, the adsorption plate 8 and the mounting plate 9 drive the scraper 12 to move into the gearbox 3. If the monitoring device inside the gearbox 3 detects that the lubricating oil content inside the gearbox 3 is low, the monitoring device starts the liquid pump 26. The liquid pump 26 absorbs the lubricating oil inside the first collection box 23 through the suction pipe 27 and inputs the lubricating oil into the gearbox 3 through the outlet pipe 28, ensuring the amount of lubricating oil inside the gearbox 3 and improving the service life of the gear ring 1 and multiple sets of yaw gears 6.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A yaw gear assembly for a wind turbine, comprising a gear ring (1), a mounting cover (2), and a gearbox (3), characterized in that: The inner wall of the gear ring (1) is movably mounted with a mounting cover (2), and multiple gearboxes (3) are mounted on the outer wall of the mounting cover (2). Each of the multiple sets of gearboxes (3) is equipped with a yaw motor (4) at the bottom, and each of the multiple sets of yaw motors (4) is equipped with a yaw shaft (5) at the output end. Each of the multiple sets of yaw shafts (5) extends into the interior of the multiple sets of gearboxes (3) and is equipped with a yaw gear (6). Each of the multiple sets of yaw gears (6) is meshed with a gear ring (1). Each of the multiple sets of gearboxes (3) is equipped with an adsorption plate (8), and each set of adsorption plates (8) is arranged in a "U" shape. Each set of adsorption plates (8) is equipped with an electromagnetic plate. Each of the multiple sets of gearboxes (3) has an installation chamber (15) installed at one end, and each of the multiple sets of gearboxes (3) has a reserved opening (7) at one end. The multiple sets of reserved openings (7) are respectively connected to the multiple sets of installation chambers (15). Each of the multiple sets of adsorption plates (8) extends into the reserved opening (7) and has an installation plate (9) installed at one end. Each of the multiple sets of installation plates (9) extends into the outer wall of the multiple sets of reserved openings (7) and has two sets of limiting blocks (11) installed at one end. Each of the multiple sets of installation chambers (15) has two sets of limiting shafts (14) movably installed inside, and the two sets of limiting shafts (14) are connected by a toothed synchronous belt. Each of the multiple sets of installation chambers (15) has a drive motor (13) installed at one end, and the output end of the drive motor (13) is connected to the multiple sets of limiting shafts (14) respectively. The outer walls of the multiple sets of limiting shafts (14) are threadedly connected to the inner walls of the multiple sets of limiting blocks (11). Each of the multiple sets of installation chambers (15) is equipped with two sets of fixed columns (16), and each of the multiple sets of fixed columns (16) is equipped with a magnet at one end. Each of the multiple sets of installation plates (9) is provided with two sets of reserved holes, and each of the multiple sets of fixed columns (16) corresponds to the multiple sets of reserved holes. Each of the multiple sets of installation plates (9) is movably equipped with a scraper (12) on one side, and each of the multiple sets of scrapers (12) is equipped with a magnetic block that matches the magnetic block at one end of the fixed column (16) on the inner wall. Each of the multiple sets of installation plates (9) is equipped with a magnetic block that matches the magnetic block inside the multiple sets of scrapers (12). The scrapers (12) of the multiple sets are arranged in an arc shape on one side, and the arc-shaped end of the scraper (12) is inclined. Each of the multiple sets of mounting plates (9) has a toothed plate (10) installed at one end, and each of the multiple sets of mounting chambers (15) has a drive shaft (18) movably installed on the inner wall. Each of the multiple sets of drive shafts (18) has a drive gear (19) installed at one end, and each of the multiple sets of drive gears (19) extends into the interior of the mounting chamber (15) and meshes with the multiple sets of toothed plates (10). Each of the multiple gearboxes (3) has a movable shaft (20) movably installed on its inner wall, and the multiple movable shafts (20) are connected to the multiple transmission shafts (18) by toothed synchronous belts. Each of the multiple gearboxes (3) has two sets of connecting shafts (21) movably installed on its inner wall, and the two sets of connecting shafts (21) are connected by toothed synchronous belts. The multiple sets of connecting shafts (21) are connected to the multiple sets of movable shafts (20) by toothed synchronous belts. Each of the multiple reserved openings (7) has a baffle (22) movably installed on its upper end, and the inner wall of the multiple sets of baffles (22) is threaded to the outer wall of the multiple sets of connecting shafts (21). Each of the multiple sets of installation chambers (15) is equipped with a first collection box (23) at the bottom. Each of the multiple sets of first collection boxes (23) is equipped with multiple sets of filter plates (24), and the multiple sets of filter plates (24) are arranged in a stepped manner. Each of the multiple sets of first collection boxes (23) is equipped with a guide plate (25), and the multiple sets of guide plates (25) are respectively located at the lower end of the multiple sets of filter plates (24).

2. The yaw gear assembly for a wind turbine generator according to claim 1, characterized in that: Auxiliary plates (29) are installed on the outer walls of multiple sets of first collection boxes (23). Supports (17) are symmetrically installed at the bottom of multiple sets of installation chambers (15). The cross-section of multiple sets of supports (17) is "L" shaped. Second collection boxes (30) are movably installed at the bottom of multiple sets of installation chambers (15). The inlet of the second collection box (30) is connected to the outlet of the first collection box (23). Protruding plates (31) are symmetrically installed on the outer walls of multiple sets of second collection boxes (30). The outer walls of multiple sets of protruding plates (31) are movably connected to the inner walls of multiple sets of supports (17). Grooves (32) are opened at the bottom of multiple sets of second collection boxes (30). The inner walls of multiple sets of grooves (32) are movably connected to the outer walls of multiple sets of auxiliary plates (29).

3. The yaw gear assembly for a wind turbine generator according to claim 1, characterized in that: Each of the first collection boxes (23) is equipped with a liquid guide pump (26), and each of the liquid guide pumps (26) is equipped with a suction pipe (27) at its inlet and a liquid outlet pipe (28) at its outlet. One end of each liquid outlet pipe (28) extends into the interior of each gearbox (3). Each of the gearboxes (3) is equipped with a monitoring device, and each monitoring device is electrically connected to the liquid guide pump (26).

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