Fan yaw system and method

Abstract

The fan yaw system comprises a tower, a yaw system arranged on the tower and a supporting table arranged on the tower and used for supporting a cabin, and the supporting table and the tower are rotationally arranged. The yaw system comprises a storage cover arranged at the top end of the tower, a sealing plate arranged on the supporting table and used for sealing the storage cover, a gear ring arranged in the storage cover and yaw adjusting devices arranged on the supporting table, the storage cover and the sealing plate are rotationally arranged, and the yaw adjusting devices are distributed in the circumferential direction of the supporting table. Oil outlet assemblies are symmetrically arranged on the yaw adjusting device with the yaw adjusting device as the center, and the supporting table penetrates through the gear ring and is rotationally arranged with the tower. According to the yaw adjusting device, through the oil outlet assembly, when the yaw adjusting device works, the driving mechanism drives the oil outlet assembly to squeeze grease into the first gear, so that the lubricating effect on the gear and the gear ring is achieved, and the service life of the gear is prolonged.

Description

Technical Field

[0001] The present invention belongs to the field of wind power generation, and in particular relates to a wind turbine yaw system and method. Background Art

[0002] The wind turbine's yaw system, also known as the wind-pointing device, is a crucial component of a wind turbine. Its primary function is to quickly and steadily align the turbine's nacelle with the wind direction as the wind speed vector changes, ensuring the rotor captures maximum wind energy. Through continuous feedback and adjustments, the yaw system maintains the turbine blades' orientation toward the wind, thereby improving the turbine's power generation efficiency.

[0003] When the wind turbine needs to be aligned with the wind, the yaw motor starts, driving the reducer and its gears. The yaw ring gear then drives the yaw bearing to rotate the nacelle, realigning it with the wind. When the nacelle reaches the desired angle, the system stops the motor and locks the position. However, the meshing gears and yaw ring gear require lubrication. This meshing squeezes out grease, preventing adequate lubrication between the gears and ring gear, leading to rust and corrosion, and shortening their service life. Summary of the Invention

[0004] The present invention aims to provide a wind turbine yaw system and method to solve the technical problems raised in the above background technology.

[0005] To achieve the above objectives, the specific technical solutions of a wind turbine yaw system and method of the present invention are as follows:

[0006] A wind turbine yaw system includes a tower, a yaw system mounted on the tower, and a support platform mounted on the tower for supporting a nacelle, wherein the support platform and the tower are rotatably arranged. The yaw system includes a storage cover mounted on the top of the tower, a sealing plate mounted on the support platform for sealing the storage cover, the storage cover and the sealing plate being rotatably arranged, a ring gear mounted within the storage cover, and a yaw adjustment device mounted on the support platform, wherein the yaw adjustment device is circumferentially distributed along the support platform, an oil outlet assembly is symmetrically provided about the center of the yaw adjustment device, and the support platform passes through the ring gear and is rotatably arranged with respect to the tower. The yaw adjustment device includes a connecting seat mounted on the circumference of the support platform, a reducer and a motor mounted on the connecting seat, wherein the output end of the motor is connected to the input end of the reducer, and the output end of the reducer passes through the sealing plate and is rotatably arranged with respect to the sealing plate, and a first gear meshing with the ring gear is provided on the output end of the reducer. The oil outlet assembly includes an oil tank arranged on the side wall of the connecting seat, a piston is slidingly provided in the oil tank, and a push rod is provided on the piston, and the push rod is slidably arranged with the top surface of the oil tank, a supercharger for increasing the pressure in the oil tank is provided on one side of the oil tank, and a connecting pipe is connected to the side wall of the oil tank, the connecting pipe passes through the sealing plate and extends outward, and the free end of the connecting pipe is connected to the oil outlet pipe for discharging oil to the gear.

[0007] Furthermore, the supercharger includes a loading shell provided on the side wall of the oil tank, an air bag connected to the loading shell, and an air pipe connecting the loading shell and the oil tank, a one-way valve located on the loading shell, and a driving mechanism connected between the reducer and the air bag.

[0008] Furthermore, the drive mechanism includes a second gear mounted on the output end of the reducer and a transmission mechanism mounted on the connecting base. The transmission mechanism includes a slide slidably mounted on the bottom surface of the connecting base. The bottom surface of the slide is provided with a first push plate, one side of which engages with the airbag, and the other side of which is provided with a swing plate that rotates via a rotating shaft. A rotating spring is mounted on the rotating shaft, one end of the rotating spring is connected to the swing plate, and the other end is connected to the first push plate. The swing plate engages with the second gear. A limit plate is provided on the side of the first push plate near the swing plate, and the limit plate engages with the swing plate.

[0009] Furthermore, the bottom surface of the connecting seat is provided with limit frames on both sides of the slide, and the slide slides between the two limit frames. A connecting plate is connected between the two limit frames, and a limit rod is provided on the slide, and a first spring is sleeved on the limit rod between the slide and the connecting plate, and the limit rod passes through the connecting plate and slides therewith.

[0010] Furthermore, a second push plate is provided in the airbag, and a second spring is provided between the second push plate and the interior of the loading shell.

[0011] Furthermore, an opening is provided on the sealing plate at a position corresponding to the yaw adjustment device, and a detachable cover plate is provided in the opening.

[0012] Furthermore, limit strips are provided on both ends of the cover plate, and slide grooves for installing the limit strips are opened on both sides of the opening of the sealing plate, and support ears are provided on the top surface of the cover plate and the sealing plate, and each support ear is provided with a through hole for the bolt to pass through.

[0013] A method for using a wind turbine yaw system comprises the following steps:

[0014] S1. The yaw adjustment device is started. The motor in the yaw adjustment device drives the reducer, and the first gear on the output end of the reducer rotates. Under the action of the ring gear meshing with the first gear, the reducer drives the support platform to rotate on the tower through the connecting seat;

[0015] S2, the driving mechanism arranged between the yaw adjustment device and the oil outlet assembly works;

[0016] S3. The second gear in the driving mechanism drives the transmission mechanism to operate, and the transmission mechanism drives the oil outlet assembly to operate, so that the oil outlet assembly starts to discharge oil to the first gear.

[0017] The wind turbine yaw system and method of the present invention have the following advantages:

[0018] 1. The present invention uses an oil outlet assembly. When the yaw adjustment device is working, the driving mechanism drives the oil outlet assembly to squeeze grease onto the first gear, thereby achieving lubrication of the gear and the ring gear and improving the service life of the gear.

[0019] 2. The present invention provides a detachable cover plate on the sealing plate, through which the gears can be observed and repaired, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a wind turbine yaw system and method according to the present invention;

[0021] Figure 2 This is a schematic diagram of the interior of the storage cover of the present invention;

[0022] Figure 3 Schematic diagram of the yaw adjustment device of the present invention;

[0023] Figure 4 Schematic diagram of the oil outlet assembly and transmission mechanism of the present invention;

[0024] Figure 5 Schematic diagram of the limiting frame, connecting plate, limiting rod and first spring of the present invention;

[0025] Figure 6 This is a schematic diagram of the second spring and the second push plate of the present invention;

[0026] Figure 7 Schematic diagram of the cover plate, support ears and limit strips of the present invention.

[0027] Description of the marks in the figure:

[0028] 1. Tower; 2. Storage cover; 3. Support platform; 4. Ring gear; 5. Yaw adjustment device; 51. Connecting seat; 52. Reducer; 53. Motor; 54. First gear; 6. Oil outlet assembly; 61. Oil tank; 62. Loading shell; 63. Air bag; 64. One-way valve; 65. Air pipe; 66. Connecting pipe; 67. Oil outlet pipe; 68. Piston; 69. Push rod; 7. Second gear; 8. Sealing plate; 9. Transmission mechanism; 91. Slide plate; 92. First push plate; 93. Swing plate; 94. Rotating spring; 95. Limit plate; 10. Limit frame; 11. Connecting plate; 12. Limit rod; 13. First spring; 14. Second spring; 15. Second push plate; 16. Cover plate; 17. Support ear; 18. Limit strip. DETAILED DESCRIPTION

[0029] In order to better understand the purpose, structure and function of the present invention, a wind turbine yaw system and method of the present invention are further described in detail below with reference to the accompanying drawings.

[0030] like Figures 1 to 7 As shown, a wind turbine yaw system and method according to the present invention includes a tower 1, a yaw system mounted on tower 1, and a support platform 3 mounted on tower 1 for supporting a nacelle. The support platform 3 is rotatable relative to the tower 1 to adjust the angle of the nacelle. The yaw system drives the support platform 3 to rotate on the tower 1, thereby adjusting the nacelle mounted on the support platform 3.

[0031] Specifically, the yaw system includes a storage cover 2, located at the top of the tower 1. The storage cover 2 is a hollow cylinder with an upward-facing opening. A sealing plate 8 is provided on the support platform 3 to seal the opening of the storage cover 2. The storage cover 2 and the sealing plate 8 are rotatably mounted. A ring gear 4 is also located within the storage cover 2, and a yaw adjustment device 5 is provided on the support platform 3 to cooperate with the ring gear 4. Lubricating grease can be placed inside the storage cover 2 to lubricate the ring gear 4 and the yaw adjustment device 5. The yaw adjustment device 5 is distributed circumferentially along the support platform 3, which passes through the ring gear 4 and is rotatably mounted with the tower 1. The yaw adjustment device 5, in conjunction with the ring gear 4, drives the support platform 3 to rotate on the tower 1, thereby rotating the nacelle on the support platform 3. Specifically, the yaw adjustment device 5 includes a connecting base 51, located circumferentially of the support platform 3. A reducer 52 and a motor 53 are vertically mounted on the connecting base 51. The motor 53 is located above the reducer 52, and the output end of the motor 53 is connected to the input end of the reducer 52. The output end of the reducer 52 passes through the sealing plate 8 and is rotatably arranged therewith, and a first gear 54 meshing with the ring gear 4 is provided on the output end of the reducer 52, that is, the first gear 54 and the ring gear 4 are both located in the storage cover 2, which facilitates the lubrication of the first gear 54 and the ring gear 4 by the lubricating grease. The motor 53 is connected to an external power supply. When the direction of the cabin needs to be adjusted, the motor 53 is started, and the motor 53 drives the reducer 52 to work. When the reducer 52 is working, it drives the first gear 54 on its output end to rotate, and when the first gear 54 rotates, it cooperates with the meshing ring gear 4 to drive the support platform 3 to rotate, and finally the support platform 3 drives the cabin to rotate, completing the angle adjustment of the blades on the cabin, so that the cabin of the wind turbine 53 can be quickly and smoothly aligned with the wind direction, ensuring that the wind wheel can always capture the maximum wind energy.

[0032] Preferably, an oil outlet assembly 6 is provided symmetrically about the center of the yaw adjustment device 5. When the yaw adjustment device 5 is in operation, the oil outlet assembly 6 is driven by the driving mechanism to squeeze grease into the first gear 54, thereby lubricating the gears and the ring gear 4 and improving the service life of the gears. Specifically, the oil outlet assembly 6 includes an oil tank 61 provided on the side wall of the connecting seat 51. A piston 68 is provided slidingly in the oil tank 61, and a push rod 69 is provided on the piston 68. The push rod 69 is slidably provided with the top surface of the oil tank 61. A supercharger for increasing the pressure in the oil tank 61 is provided on one side of the oil tank 61, and a connecting pipe 66 is connected to the side wall of the oil tank 61. The connecting pipe 66 passes through the sealing plate 8 and extends into the interior of the storage cover 2. The free end of the connecting pipe 66 is connected to an oil outlet pipe 67 for discharging oil to the gears. The intensifier can be used to increase the pressure in the oil tank 61, and then the piston 68 drives the push rod 69 to press the grease downward, so that the grease in the oil tank 61 enters the oil outlet pipe 67 through the connecting pipe 66, and is squeezed into the tooth gap of the first gear 54 through the oil outlet pipe 67, thereby lubricating the first gear 54. After the first gear 54 is lubricated, the ring gear 4 meshing with the first gear 54 is also lubricated, thereby achieving uniform lubrication of the first gear 54 and the ring gear 4, effectively preventing the first gear 54 and the ring gear 4 from rusting and corrosion. Figure 4 As shown, a refueling port is provided on the side wall of the oil tank 61, and a cap is threadedly connected to the refueling port. Grease can be added to the oil tank 61 through the refueling port, and the piston 68 can also be pulled upward to the initial position through the push rod 69.

[0033] Specifically, the supercharger includes a loading shell 62 provided on the side wall of the oil tank 61, and the loading shell 62 is connected to an airbag 63, which is an automatically recoverable airbag 63, and is connected to a one-way valve 64 for the airbag 63 to inhale air. Among them, the loading shell 62 is connected to the oil tank 61 through an air pipe 65. After the airbag 63 is pressurized, the gas in the airbag 63 enters the oil tank 61 through the air pipe 65, and the grease in the oil tank 61 will enter the oil outlet pipe 67 through the connecting pipe 66 and squeeze onto the first gear 54 through the oil outlet pipe 67 to lubricate it. Of course, after the airbag 63 is pressurized, when it needs to be restored, the airbag 63 will inhale air through the one-way valve 64 to restore it. The operation is simple and convenient to use. In order to realize the pressing of the airbag 63, the reducer 52 and the airbag 63 are connected by a driving mechanism. As Figure 3 and Figure 4 As shown, the driving mechanism includes a second gear 7 provided on the output end of the reducer 52 and a transmission mechanism 9 provided on the connecting seat 51. When the second gear 7 rotates, it drives the transmission mechanism 9 to work, and the transmission mechanism 9 drives the airbag 63 to work, so that the oil outlet component 6 can automatically lubricate the first gear 54 with oil. The operation is simple and the use is more convenient.

[0034] like Figure 3 and Figure 4 As shown, the transmission mechanism 9 includes a slide plate 91 slidably arranged on the bottom surface of the connecting seat 51, and a first push plate 92 is provided on the bottom surface of the slide plate 91, and one side of the first push plate 92 cooperates with the air bag 63, that is, the first push plate 92 can apply pressure to the air bag 63 when it moves, so that the air bag 63 applies pressure to the oil tank 61 through the air pipe 65. On the other side of the first push plate 92, a swing plate 93 is provided by rotating through a rotating shaft, and a rotating spring 94 is sleeved on the rotating shaft. One end of the rotating spring 94 is connected to the swing plate 93, and the other end is connected to the first push plate 92. At the same time, the swing plate 93 cooperates with the second gear 7. In addition, a limit plate 95 is provided on the side of the first push plate 92 close to the swing plate 93, and the limit plate 95 cooperates with the swing plate 93. For ease of understanding, as shown Figure 3 As shown, the transmission mechanism 9 on the left side of the connecting seat 51 is referred to as the first transmission part, and the transmission mechanism 9 on the right side is referred to as the second transmission part. When the second gear 7 rotates counterclockwise, the second gear 7 shifts the swing plate 93 on the second transmission part. The swing plate 93, under the action of its corresponding limit plate 95, drives the first push plate 92 to move. The first push plate 92 applies pressure to its corresponding airbag 63, causing the airbag 63 to inflate the oil tank 61 to which it is connected, and the grease in the oil tank 61 is ejected through the connecting pipe 66 and the oil outlet pipe 67, completing the lubrication of the first gear 54. It should be noted that when the oil outlet assembly 6 of the second transmission part is discharging oil, it will squeeze the grease into the teeth of the first gear 54 that will mesh with the ring gear 4 in advance, so that the teeth of the first gear 54 that are about to work are fully lubricated, thereby increasing its service life and reducing the waste of grease in the oil tank 61. Of course, when the second gear 7 rotates counterclockwise, it also drives the swing plate 93 on the first transmission part to contact it. When the swing plate 93 on the first transmission part is moved by the teeth on the second gear 7, because the limit plate 95 on the first transmission part is facing the direction of the reducer 52, the swing plate 93 on the first transmission part is not restricted by its corresponding limit plate 95. The limit plate 95 on the first transmission part moves with the second gear 7. When the limit plate 95 disengages the teeth of the second gear 7 with which it contacts, the rotation spring 94 drives the limit plate 95 to rotate toward its initial position, thereby achieving the reciprocating swing of the swing plate 93, preventing the first push plate 92 on the first transmission part from moving, and conserving grease in the corresponding oil tank 61 of the first transmission part. Similarly, when the second gear 7 rotates clockwise, the first transmission part operates, driving its corresponding oil outlet assembly 6 to operate, and pre-extracting grease onto the teeth of the first gear 54 meshing with the ring gear 4, and the swing plate 93 on the second transmission part begins to oscillate back and forth.

[0035] To facilitate the rapid return of the airbag 63, a second push plate 15 is located within the airbag 63, with a second spring 14 interposed between the second push plate 15 and the interior of the loading housing 62. When the first push plate 92 pushes the airbag 63, the second push plate 15 within the airbag 63 also moves, compressing the second spring 14. When the first push plate 92 begins to move away from the airbag 63, the second spring 14 pushes the second push plate 15, which in turn pushes the airbag 63, facilitating its rapid return.

[0036] Specifically, such as Figure 5 As shown, a limit frame 10 is detachably provided on both sides of the slide 91 on the bottom surface of the connecting seat 51 by screws, and the slide 91 can slide between the two limit frames 10. The limit frame 10 is composed of a U-shaped frame and protrusions provided at both ends of the upper side of the U-shaped frame, and the two protrusions are provided with through holes for the screws to pass through. The slide 91 is T-shaped, and the top end of the slide 91 is slidably provided in the U-shaped frame. In order to allow the slide 91 to reciprocate in the two corresponding limit frames 10, a connecting plate 11 is connected between the two limit frames 10, and a limit rod 12 is provided on the slide 91, and a first spring 13 is sleeved on the limit rod 12 between the slide 91 and the connecting plate 11, and the limit rod 12 passes through the connecting plate 11 and is slidably provided with it. When the second gear 7 drives the swing plate 93 to move, the swing plate 93 drives its corresponding first push plate 92 to move under the action of the limit plate 95, and the first push plate 92 drives the slide to move in the limit frame 10 and begins to compress the first spring 13. When the swing plate 93 releases the contact with the corresponding tooth of the second gear 7, the first spring 13 pushes the slide plate 91 to move to the initial position, and makes the adjacent teeth on the second gear 7 contact with the swing plate 93 again, and this reciprocating process can be carried out.

[0037] As another preferred embodiment, an opening is provided on the sealing plate 8 at a position corresponding to the yaw adjustment device 5, and a cover plate 16 is detachably provided in the opening. By detachably providing the cover plate 16 on the sealing plate 8, the gears can be observed and repaired through the cover plate 16, and the interior of the storage cover 2 can also be cleaned through the opening position of the sealing plate 8, which makes it more convenient to use. Specifically, limit bars 18 are provided on both ends of the cover plate 16, and slide grooves for installing the limit bars 18 are provided on both sides of the opening of the sealing plate 8, and support ears 17 are provided on the top surface of the cover plate 16 and the sealing plate 8, and each support ear 17 is provided with a through hole for the bolt to pass through. When installing the cover plate 16, push the cover plate 16 into the opening of the sealing plate 8, and then use bolts to pass through the through holes of the support ears 17 on the cover plate 16 and the sealing plate 8 to connect the support ears 17.

[0038] A method for using a wind turbine yaw system comprises the following steps:

[0039] S1. The yaw adjustment device 5 is started. The motor 53 in the yaw adjustment device 5 drives the reducer 52. The first gear 54 on the output end of the reducer 52 rotates. Under the action of the ring gear 4 meshing with the first gear 54, the reducer 52 drives the support platform 3 to rotate on the tower 1 through the connecting seat 51.

[0040] S2, the driving mechanism arranged between the yaw adjustment device 5 and the oil outlet assembly 6 works;

[0041] S3 . The second gear 7 in the driving mechanism drives the transmission mechanism 9 to operate, and the transmission mechanism 9 drives the oil outlet assembly 6 to operate, so that the oil outlet assembly 6 starts to discharge oil to the first gear 54 .

[0042] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A wind turbine yaw system, characterized in that: It comprises a tower (1), a yaw system arranged on the tower (1), and a support platform (3) arranged on the tower (1) for supporting a cabin, wherein the support platform (3) and the tower (1) are rotatably arranged; The yaw system comprises a storage cover (2) arranged at the top of a tower (1), a sealing plate (8) arranged on a support platform (3) for sealing the storage cover (2), the storage cover (2) and the sealing plate (8) being rotatably arranged, a gear ring (4) arranged in the storage cover (2), a yaw adjustment device (5) arranged on the support platform (3), and the yaw adjustment device (5) is distributed along the circumference of the support platform (3), an oil outlet assembly (6) is symmetrically arranged on the yaw adjustment device (5) and the support platform (3) passes through the gear ring (4) and is rotatably arranged with the tower (1); The yaw adjustment device (5) comprises a connection seat (51) arranged in the circumferential direction of the support platform (3), a reducer (52) and a motor (53) arranged on the connection seat (51), the output end of the motor (53) being connected to the input end of the reducer (52), and the output end of the reducer (52) passing through the sealing plate (8) and being rotatably arranged therewith, and a first gear (54) meshing with the gear ring (4) being arranged on the output end of the reducer (52); The oil outlet assembly (6) comprises an oil tank (61) arranged on the side wall of the connecting seat (51), a piston (68) is slidably arranged in the oil tank (61), a push rod (69) is arranged on the piston (68), and the push rod (69) is slidably arranged on the top surface of the oil tank (61), a supercharger for increasing the pressure in the oil tank (61) is arranged on one side of the oil tank (61), and a connecting pipe (66) is connected to the side wall of the oil tank (61), the connecting pipe (66) passes through the sealing plate (8) and extends outward, and the free end of the connecting pipe (66) is connected to an oil outlet pipe (67) for discharging oil to the gear.

2. A wind turbine yaw system according to claim 1, characterized in that: The supercharger comprises a loading shell (62) disposed on a side wall of an oil tank (61), an air bag (63) being connected to the loading shell (62), and the loading shell (62) and the oil tank (61) being connected via an air pipe (65), and a one-way valve (64) being connected to the loading shell (62); The reducer (52) and the airbag (63) are connected via a driving mechanism.

3. A wind turbine yaw system according to claim 2, characterized in that: The driving mechanism comprises a second gear (7) arranged on the output end of the reducer (52) and a transmission mechanism (9) arranged on the connecting seat (51); The transmission mechanism (9) comprises a slide plate (91) slidably arranged on the bottom surface of the connecting seat (51), a first push plate (92) is arranged on the bottom surface of the slide plate (91), one side of the first push plate (92) cooperates with the air bag (63), and the other side is provided with a swing plate (93) which is rotated by a rotating shaft, and a rotating spring (94) is sleeved on the rotating shaft, one end of the rotating spring (94) is connected to the swing plate (93), and the other end is connected to the first push plate (92), and the swing plate (93) cooperates with the second gear (7); A limiting plate (95) is provided on one side of the first push plate (92) close to the swing plate (93), and the limiting plate (95) cooperates with the swing plate (93).

4. A wind turbine yaw system according to claim 3, characterized in that: The bottom surface of the connecting seat (51) is provided with limiting frames (10) on both sides of the slide plate (91), and the slide plate (91) is slidably arranged between the two limiting frames (10); A connecting plate (11) is connected between the two limiting frames (10), and a limiting rod (12) is provided on the slide plate (91). A first spring (13) is sleeved on the limiting rod (12) and is located between the slide plate (91) and the connecting plate (11). The limiting rod (12) penetrates the connecting plate (11) and is slidably arranged therewith.

5. A wind turbine yaw system according to claim 3, characterized in that; A second push plate (15) is provided inside the air bag (63), and a second spring (14) is provided between the second push plate (15) and the inside of the loading shell (62).

6. A wind turbine yaw system according to claim 5, It is characterized by: An opening is provided on the sealing plate (8) at a position corresponding to the yaw regulating device (5), and a cover plate (16) is detachably provided in the opening.

7. A wind turbine yaw system according to claim 6, characterized in that ； Limiting strips (18) are provided at both ends of the cover plate (16), and sliding grooves for installing the limiting strips (18) are provided on both sides of the opening of the sealing plate (8), and supporting ears (17) are provided on the top surface of the cover plate (16) and the sealing plate (8), and each supporting ear (17) is provided with a through hole for a bolt to pass through.

8. A method for using a wind turbine yaw system according to claims 1 to 7 comprises the following steps: S1, the yaw adjustment device (5) is started, the motor (53) in the yaw adjustment device (5) drives the reducer (52), the first gear (54) on the output end of the reducer (52) rotates, and under the action of the ring gear (4) meshing with the first gear (54), the reducer (52) can drive the support platform (3) on the tower (1) to rotate through the connecting seat (51); S2, the driving mechanism arranged between the yaw adjustment device (5) and the oil outlet assembly (6) operates; S3. The second gear (7) in the driving mechanism drives the transmission mechanism (9) to operate, and the transmission mechanism (9) drives the oil outlet assembly (6) to operate, so that the oil outlet assembly (6) starts to discharge oil to the first gear (54).

Images