Wind turbine yaw assembly, apparatus and method

Abstract

The application relates to a yaw assembly, device and method of a wind turbine generator set, which comprises a driving assembly arranged between a main frame body and a tower drum; the driving assembly is provided with one or at least two driving arms; the driving arms drive the main frame body to rotate on the tower drum in a circumferential direction individually, simultaneously or alternately and intermittently; the driving assembly is intermittently connected with a plug-in part; when the driving arms are reset back, the force transmission state between the main frame body and the driving arms or the force transmission state between the driving arms and the tower drum is in a disconnected state. The application has the advantages of reasonable design, compact structure and convenient use.

Description

Technical Field

[0001] This invention relates to yaw components, equipment, and methods for wind turbine generator sets. Background Technology

[0002] The yaw system is used to align the wind turbine with the wind. When the wind direction changes, the yaw system drives the hub to align with the wind direction, thus achieving hub alignment with the wind direction.

[0003] The working principle of a conventional yaw system is as follows: when adjustment according to wind direction is required, a set of gears meshes to make the hub swing, such as the wind power yaw system and yaw system friction plate replacement method described in application number 202110959660.2. However, its gear meshing has many problems such as tooth wear and tooth breakage, high noise, and the need for regular maintenance. During startup, it is driven by friction, resulting in severe wear on the tooth surface. There are also dual-cylinder drives, but due to the stroke limitation of the cylinders, 360° rotation cannot be achieved, and there are many problems such as jamming. Moreover, during startup, a lot of useless power is consumed. There is no solution to reduce useless power and improve the utilization rate of useful power, no solution to reduce the inertial force of hub (nacelle) yaw swing, and no solution to overcome or reduce the rotational skew wear caused by the torque, bending moment and skew generated by wind when overcoming yaw. The technical problems proposed are the creative discoveries of the applicant.

[0004] In addition, how to achieve low power consumption, reduce wasted energy, increase useful energy, reduce maintenance frequency, and achieve circular motion are urgent technical problems that need to be solved. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a yaw component, equipment and method for a wind turbine generator set.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0007] A yaw assembly for a wind turbine generator set, the unit including a drive assembly disposed between the main frame and the tower section;

[0008] A drive assembly having one or at least two drive arms;

[0009] The drive arm drives the main frame to rotate circumferentially in the tower section, either individually, simultaneously, or alternately and intermittently.

[0010] As a further improvement to the above technical solution:

[0011] The drive assembly and the plug-in component are intermittently driven connected;

[0012] When the drive arm returns to its original position, the force transmission between the main frame and the drive arm, or between the drive arm and the tower, is disconnected.

[0013] When the drive arm drives the main frame to rotate, the output force of the drive arm is varied, the rotational angular velocity of the main frame is varied, and / or the tangential acceleration of the main frame is varied.

[0014] The tower section has a rotating support section that is rotatably mounted to the main frame section; the rotating support section has a circumferential side section, on which several plug-in components are radially distributed;

[0015] When the drive assembly drives the main frame to rotate, the drive assembly connects to the plug-in component; when the drive assembly returns to its original position, the drive assembly separates from the plug-in component.

[0016] The drive assembly includes several hinged seats mounted on the main frame; a drive arm is hinged to each hinged seat; and an ear seat is hinged to the end of each drive arm.

[0017] The radial cylinder section is connected to a guide slide plate;

[0018] A ring track is provided on the outer side of the circumferential side, with the guide slide plate inside the ring track; the guide slide plate corresponds to the circumferential side.

[0019] A telescopic connection is provided on the ear seat or guide plate; the telescopic connection is adapted to connect or separate from the plug-in component.

[0020] The main frame has an outer flange and a limiting ring platform is set on the tower section;

[0021] The two bottom sides of the annular track are the outer ring flange and the limiting annular platform, respectively; the width of the annular track groove is greater than the thickness of the guide slide plate;

[0022] An inlaid collar A is provided on the outer flange, and an inlaid collar B is provided on the limiting annular platform;

[0023] The annular track is located between the circumferential side, the outer flange, the limiting annular platform, and the inlaid ring A and inlaid ring B.

[0024] One or at least two guide holes are provided on the ear seat; a guide sleeve is provided in the guide hole.

[0025] The guide slide has a guide hole, and there is a guide rod in the guide hole;

[0026] The guide sleeve is matched with the guide rod; there is a return spring between the bottom of the guide hole and the guide rod;

[0027] There is one or at least two radial cylinder portions on the ear seat portion;

[0028] The guide slide plate and the ear seat are connected by a guide rod.

[0029] A telescopic pin is provided on the ear base as a telescopic connecting part for radial insertion or separation with the plug-in component; the plug-in component is a hole;

[0030] The telescopic pin, radial cylinder section, and guide rod are arranged in parallel.

[0031] When a plug-in connection is required, the radial cylinder drives the guide slide plate to move away from the axis O. The guide slide plate has contact parts at both ends that abut against the outer side of the annular track. The telescopic pin is located on the vertical center line of the contact parts at both ends of the guide slide plate. The guide slide plate is guided and connected to the guide process sleeve by the guide rod overcoming the return spring. The telescopic pin extends out and plugs into the plug-in component.

[0032] When the telescopic pin separates from the plug-in component, the telescopic pin moves away from the axis O and separates from the plug-in component. The radial cylinder drives the guide slide plate to move the tower section closer to the axis O, so that the guide rod separates from the ear seat or the guide slide plate.

[0033] The drive arm includes drive cylinder A and / or drive cylinder B; when drive cylinder A and drive cylinder B are used, drive cylinder A and drive cylinder B respectively apply tension and thrust to the main frame body, or drive cylinder A and drive cylinder B respectively apply thrust and tension to the main frame body.

[0034] The rotating support section uses a slewing bearing and a bearing housing that matches the slewing bearing;

[0035] A pressure sensor is installed between the main frame and the tower section. The power parameters of the corresponding drive arm can be adjusted according to the size of the pressure sensor. The power parameters include the magnitude of the driving force, the control speed and / or the pressure.

[0036] The telescopic pin can be hydraulically, electrically, or mechanically driven to extend or retract.

[0037] A bottom wear-resistant block is provided on the front of the bottom of the guide slide, a side wear-resistant block is provided on the side, and / or an end wear-resistant plate is provided on the back of both ends;

[0038] The surface of the end wear-resistant plate is set with a slope or arc surface;

[0039] The bottom wear-resistant block corresponds to the outer side wall of the circumferential side, the side wear-resistant block corresponds to the corresponding end face of the outer ring flange or the corresponding end face of the limiting annular platform, and the surface of the end wear-resistant plate corresponds to the inner side wall of the inlaid ring A and / or the inner side wall of the inlaid ring B.

[0040] The drive arm is equipped with limit switches, travel switches and / or rotation angle sensors to control the travel of the drive arm;

[0041] Limit switches, gratings, limit switches and / or rotation angle sensors are installed between the tower section and the main frame section to determine the insertion parts so that the telescopic pins can be inserted.

[0042] A yaw device for a wind turbine generator set includes a braking assembly and the aforementioned wind turbine generator set yaw assembly, which are installed between the main frame and the tower.

[0043] A connecting frame is installed on the tower section or the main frame section;

[0044] When the drive arm is working, the drive force of the drive arm on the upwind side is greater than or equal to the drive force of the drive arm on the downwind side.

[0045] When the drive arm rotates via the telescopic pin, it is in state B where the center line of the telescopic pin is perpendicular to the center line of the telescopic pin; the center line of the telescopic pin passes through the axis O.

[0046] State B is located between the starting position A and the ending position C of the drive arm's rotation, or State B is located at the starting position A of the drive arm's rotation.

[0047] A yaw method for wind turbine generator sets, wherein when yaw is required, the hub direction is adjusted according to the wind direction;

[0048] Step 1: The drive assembly is driven to connect with the corresponding plug-in component, so that the main frame body and the tower section can transmit force.

[0049] Step 2: Apply force to the drive arm to start the tower section from the starting position A to the ending position C;

[0050] Step 3: At the termination position C, the drive component is separated from the corresponding plug-in part, and the drive is disconnected.

[0051] Step 4: Reset the drive arm to the starting position A during idle travel;

[0052] Step 5: Repeat steps 1 to 5 to achieve circumferential yaw of the main frame.

[0053] As a further improvement to the above technical solution:

[0054] With the aid of the aforementioned equipment;

[0055] In step one, when the insertion component reaches the starting position A, the radial cylinder is activated. The radial cylinder drives the guide slide plate to move away from the axis O. The guide slide plate has contact parts at both ends that abut against the outer side of the annular track. The guide slide plate is guided and connected to the guide process sleeve through the guide rod to overcome the return spring, so that the center line of the telescopic pin at the starting position A passes through the axis O. Then, the telescopic pin extends and inserts into the insertion component.

[0056] In step two, several drive arms apply force alternately;

[0057] When each pair of drive arms uses drive cylinder A and drive cylinder B, drive cylinder A and drive cylinder B respectively apply tension and thrust to the main frame body, or drive cylinder A and drive cylinder drive arm B respectively apply thrust and tension to the main frame body.

[0058] During rotation, the pressure of each part of the rotating support is monitored, and the force applied by the drive arm is adjusted so that the pressure difference of each part of the rotating support is less than the set threshold.

[0059] When rotating, the driving force of the drive arm on the main frame first increases and then decreases.

[0060] In step three, when the telescopic pin separates from the plug-in component, the telescopic pin moves away from the axis O and separates from the plug-in component. The radial cylinder drives the guide slide plate to move the tower section closer to the axis O, so that the guide rod separates from the ear seat or the guide slide plate.

[0061] In step four, the drive arm moves in the opposite direction, causing the guide slide to move in the circular track.

[0062] This invention is reasonably designed, low in cost, sturdy and durable, safe and reliable, simple to operate, time-saving and labor-saving, cost-saving, compact in structure and easy to use. Attached Figure Description

[0063] Figure 1 This is a schematic diagram of the yaw operation structure of the present invention.

[0064] Figure 2 This is a schematic diagram of the yaw explosion structure of the present invention.

[0065] Figure 3 This is a schematic diagram of the tower section structure of the present invention.

[0066] Figure 4 This is a schematic diagram of the yaw principle of the present invention.

[0067] Figure 5 This is a schematic diagram of the telescopic pin structure of the present invention.

[0068] Figure 6 This is a schematic diagram of the guide slide structure of the present invention.

[0069] Figure 7 This is a schematic diagram of the rotating support structure of the present invention.

[0070] Figure 8 This is a schematic diagram of the telescopic pin structure of the present invention.

[0071] Figure 9 This is a schematic diagram of the ear seat structure of the present invention.

[0072] Figure 10 This is a schematic diagram of the structure of the drive cylinder A of the present invention.

[0073] Figure 11 This is a schematic diagram of the outer flange component of the present invention.

[0074] Figure 12 This is a schematic diagram of an improved structure according to another embodiment of the present invention.

[0075] The components are as follows: 1. Main frame; 2. Tower section; 3. Drive assembly; 4. Braking assembly; 5. Rotary support section; 6. Circumferential side section; 7. Plug-in component; 8. Outer ring flange; 9. Circular track; 10. Inlaid collar B; 11. Inlaid collar A; 12. Ear seat section; 13. Hinge seat section; 14. Guide slide plate; 15. Telescopic pin; 16. Drive cylinder A; 17. Drive cylinder B; 18. Guide rod; 19. Radial cylinder section; 20. Bottom wear-resistant block; 21. Side wear-resistant block; 22. End wear-resistant plate; 23. Connecting frame; 24. Limiting annular platform; 25. Return spring; 26. Guide process sleeve; 27. Guide hole section. Detailed Implementation

[0076] like Figure 1-12 As shown in the figure, the yaw component, device and method of the wind turbine generator set in this embodiment, specifically, the yaw component of the wind turbine generator set in this embodiment includes a drive component 3 disposed between the main frame body 1 and the tower body 2; thereby realizing drive rotation.

[0077] The drive assembly 3 can be set up in multiple pairs of circumferential arrays, each pair having one or at least two drive arms, thereby achieving better traction. Preferably, there are three sets, which not only satisfies the traction needs but also ensures sufficient space for installation, thus differentiating it from the existing gear ring drive. At the same time, compared with electromagnetic drive, it avoids electromagnetic interference, eliminating the need for a large number of shielding devices to avoid electromagnetic interference and preventing magnetic leakage.

[0078] As a specific action protection, the drive arm drives the main frame 1 to rotate circumferentially in the tower section 2 individually, simultaneously, or alternately and intermittently. As a basic protection, at least one drive arm can move, preferably multiple drive arms at the same time, so as to achieve uniform and balanced drive. Of course, multiple drive arms can also be used alternately to achieve fine adjustment, or drive arms of the same family but different directions can be used alternately, thereby solving the dead point that may exist in the linear motion arm. It is preferred that different groups of drive arms in the same direction can move simultaneously.

[0079] The drive assembly 3 and the plug-in component 7 are intermittently driven connected; since the drive arm needs to return, the drive arm is intermittently connected. However, when an alternating method is used, although a single drive arm may be intermittently driven, the overall, multiple drive arms can alternately move to achieve continuous movement of the main frame 1.

[0080] When the drive arm returns from its idle stroke, the force transmission between the main frame 1 and the drive arm, or between the drive arm and the tower section 2, is disconnected. Since it needs to be reset for secondary drive, separation allows for better re-drive.

[0081] Compared to the enormous inertial force of gear-driven starting and braking, which cannot be adjusted during rotation, the drive arm method of this invention, when driving the main frame 1 to rotate, sets the output force of the drive arm to change, the rotational angular velocity of the main frame 1 to change, and / or the tangential acceleration of the main frame 1 to change, first accelerating and then decelerating, thereby achieving low inertial force at start and stop, and high rotational speed in the middle. Through radial component force, sidewall friction is avoided, uneven wear is avoided, and frictional resistance is reduced.

[0082] The tower section 2 has a rotating support section 5 that is rotatably arranged with the main frame section 1. It is generally a slewing bearing, but it can also be a sliding bearing, a magnetic levitation method, or a hydrostatic bearing to realize the slewing support. The rotating support section 5 has a circumferential side section 6, on which several plug-in components 7 are radially distributed. These can be conventional structures such as protrusions or recesses. In short, they can realize the connection and transmit force to drive the rotation of the components, such as pin hole structures, protruding handrail structures, hand-holding structures, etc. The following embodiment adopts a pin hole structure as preferred.

[0083] As a specific action state characteristic limitation, when the drive component 3 drives the main frame 1 to rotate, the drive component 3 is connected to the plug-in component 7; when the drive component 3 returns to its original position, the drive component 3 is separated from the plug-in component 7, thereby achieving better forward drive and fast, unobstructed reverse return.

[0084] As a specific improved embodiment, the drive assembly 3 includes several hinged seats 13 disposed on the main frame 1 to achieve installation support; the hinged seats 13 are hinged to drive arms; and ear seats 12 are hinged to the ends of the drive arms; of course, reversing the drive arm connection and reversing the connection between the main frame 1 and the tower section 2 according to the technology of this application also constitutes infringement. For example Figure 12 Here is one example.

[0085] The radial cylinder part 19 is connected to the guide slide plate 14. An annular track 9 is provided on the outer side of the circumferential side part 6 at the coaxial center O. The guide slide plate 14 is in the annular track 9. The guide slide plate 14 corresponds to the circumferential side part 6. Thus, the guide slide plate 14 is driven to move radially slightly on the annular track 9.

[0086] A telescopic connecting part is provided on the ear seat 12 or the guide slide plate 14; the telescopic connecting part is adapted to connect or separate from the plug-in part 7. The telescopic connecting part is a higher-level concept. When the plug-in part 7 is a hole, the telescopic connecting part is a pin; when the plug-in part 7 is a pin, the telescopic connecting part is a hole; when the plug-in part 7 is a protrusion, the telescopic connecting part is a matching protrusion; when the plug-in part 7 is a handrail, the telescopic connecting part is a matching handrail.

[0087] Preferably, the main frame body 1 has an outer flange 8, and a limiting annular platform 24 is provided on the tower section 2; alternatively, it can also be as follows: Figure 8 The outer flange 8 and the limiting ring platform 24 can be mounted on the main frame 1, or on the tower section 2.

[0088] As illustrated, the two bottom sides of the annular track 9 are the outer ring flange 8 and the limiting annular platform 24, respectively; the width of the groove of the annular track 9 is greater than the thickness of the guide slide plate 14, thus providing room for movement. Of course, other equivalent track forms can also be used.

[0089] Preferably, an inlaid collar A11 is provided on the outer flange 8 and an inlaid collar B10 is provided on the limiting annular platform 24. They are made of wear-resistant material and are coaxially arranged. They can restrict the guide slide plate 14 from moving outward and serve as a reaction force reference.

[0090] Preferably, the annular track 9 is located between the circumferential side 6, the outer ring flange 8, the limiting annular platform 24, the inlaid ring A11, and the inlaid ring B10.

[0091] One or at least two guide holes are provided on the ear seat 12; a guide process sleeve 26 is provided in the guide hole, or a through hole can be used with a chamfered opening to facilitate the entry and exit of the guide rod 18;

[0092] The guide slide plate 14 has a guide hole 27, and a guide rod 18 is fixed in the guide hole 27 to play a guiding role.

[0093] The guide sleeve 26 is matched with the guide rod 18; there is a return spring 25 between the bottom of the guide hole and the guide rod 18; thus achieving automatic reset, which is preferred.

[0094] The ear seat portion 12 has one or at least two radial cylinder portions 19 to achieve drive, preferably two, which can ensure smooth propulsion;

[0095] The guide slide plate 14 and the ear seat 12 are guided and connected by the guide rod 18 to realize the driving movement of the guide slide plate; a telescopic pin 15 is provided on the ear seat 12 as a telescopic connection part, which is used to radially connect or disconnect with the plug-in part 7; the plug-in part 7 is a hole; the hole can be an elongated hole, a slotted hole or a round hole, and the end can be chamfered, which is convenient to process, avoids obstruction and saves space.

[0096] The telescopic pin 15, the radial cylinder part 19, and the guide rod 18 are arranged in parallel to achieve flexible guidance;

[0097] When a plug-in connection is required, the radial cylinder 19 drives the guide slide plate 14 to move the tower section 2 away from the axis O. The guide slide plate 14 has contact parts at both ends that abut against the outer side of the annular track 9. The telescopic pin 15 is located on the vertical center line of the contact parts at both ends of the guide slide plate 14. The guide slide plate 14 is guided and connected to the guide process sleeve 26 through the guide rod 18 overcoming the return spring 25. The telescopic pin 15 extends out and plugs into the plug-in component 7. Using the guide slide plate 14 as a chord, the guide rod 18 adjusts the telescopic pin 15 to the center line, which will necessarily pass through the axis, thus facilitating flexible and precise insertion into the plug-in component 7. At the same time, the outer ring side wall of the annular track 9 provides a counter-support force.

[0098] When the telescopic pin 15 separates from the insertion part 7, the telescopic pin 15 moves away from the axis O and separates from the insertion part 7. The radial cylinder part 19 drives the guide slide plate 14 to move the tower part 2 closer to the axis O, so that the guide rod 18 separates from the ear seat part 12 or the guide slide plate 14. Thus, the guide slide plate 14 can be adjusted and moved more freely and flexibly in the ring track 9, which is not available in the prior art.

[0099] To better overcome the dead point of the hydraulic cylinder drive and extend the stroke of the hydraulic cylinder drive, each pair of drive arms includes drive cylinder A16 and / or drive cylinder B17. When drive cylinder A16 and drive cylinder B17 are used, drive cylinder A16 and drive cylinder B17 apply tension and thrust to the main frame 1 respectively, or drive cylinder A16 and drive cylinder B17 apply thrust and tension to the main frame 1 respectively. Due to their different directions, they can effectively overcome the dead point of each other, and at the same time achieve complementary driving forces, realizing better and smoother drive rotation. The force first increases smoothly and then decreases smoothly, thereby greatly reducing the inertial force and overcoming the huge braking force required to counteract the braking inertial force of traditional hydraulic cylinder start-up.

[0100] Preferably, the rotating support part 5 adopts a slewing bearing and a bearing housing that matches the slewing bearing;

[0101] As an optimization, a pressure sensor is installed between the main frame 1 and the tower section 2. The power parameters of the driving force of the corresponding drive arm are adjusted according to the pressure sensor value. The power parameters include the driving force magnitude, control speed and / or pressure. When the pressure on one side is high, the driving force of the drive arm on that side is adjusted accordingly to compensate. This is a technical problem that has not been thought of or discovered in the prior art.

[0102] For example, the telescopic pin 15 is a linear motion structure such as a hydraulically driven piston rod, an electrically driven electric push rod, or a mechanically driven telescopic elastic pin.

[0103] To improve processability, enhance wear resistance, and facilitate replacement, a block structure is adopted, with a bottom wear-resistant block 20 provided on the front bottom of the guide slide plate 14, a side wear-resistant block 21 provided on the side, and / or an end wear-resistant plate 22 provided on the back of both ends.

[0104] The surface of the end wear-resistant plate 22 is set with a bevel or a curved surface, theoretically preferred to the curved surface, so as to accurately position it;

[0105] As a limitation at the action contact position, the bottom wear-resistant block 20 corresponds to the outer side wall of the circumferential side 6, the side wear-resistant block 21 corresponds to the corresponding end face of the outer ring flange 8 or the corresponding end face of the limiting annular platform 24, and the surface of the end wear-resistant plate 22 corresponds to the inner side wall of the inlaid ring A11 and / or the inner side wall of the inlaid ring B10.

[0106] In order to control the travel of the drive arm and achieve the optimal driving force travel range, the drive arm is equipped with travel switches, limit switches and / or rotation angle sensors to control the travel of the drive arm.

[0107] In order to control the rotation angle and position and facilitate the insertion action, a limit switch, a grating, a limit switch and / or a rotation angle sensor are provided between the tower section 2 and the main frame section 1 to determine the insertion part 7 so that the telescopic pin 15 can be inserted.

[0108] As a protection for the whole machine, the yaw device of the wind turbine generator set in this embodiment is provided with a braking component 4 and the above-mentioned wind turbine generator set yaw component between the main frame body 1 and the tower body 2.

[0109] A connecting frame 23 is provided on the tower section 2 or the main frame section 1, and the main frame section 1 is used to connect the wind turbine head; the connecting frame 23 is not limited to the structure shown in the figure.

[0110] In traditional yaw, only mechanical angle adjustments are made, without considering how to utilize wind power for effective guidance. When the drive arm is working, the driving force of the drive arm on the upwind side is greater than or equal to the driving force of the drive arm on the downwind side. Therefore, this invention creatively proposes how to utilize wind power to turn unfavorable conditions into favorable ones for assisted energy-saving yaw, thereby reducing wear, reducing drag, and achieving better rotational drive.

[0111] When the drive arm is driven to rotate by the telescopic pin 15, it has a state B where the center line of the telescopic pin 15 is perpendicular to the center line of the telescopic pin 15; the center line of the telescopic pin 15 passes through the axis O; at this time, the tangential force is the largest and the normal force is the smallest, that is, the rotation speed is large and the radial force is small, which realizes rapid rotation.

[0112] Its ingenious design lies in the fact that state B is located between the starting position A and the ending position C of the drive arm's rotation, or state B is located at the starting position A of the drive arm's rotation. This is something that existing technologies do not have, thus cleverly solving the problem of large inertial forces, thereby achieving effective rotation, avoiding collisions, and at the same time overcoming the drawbacks of gear transmission, achieving smooth movement.

[0113] In order to achieve reasonable drive rotation, the yaw method of the wind turbine generator in this embodiment adjusts the hub direction according to the wind direction when yaw is required;

[0114] Step 1: The drive assembly 3 is driven to connect with the corresponding plug-in component 7, so that the main frame body 1 and the tower body 2 can transmit force.

[0115] Step 2: Apply force to the drive arm to start the tower section 2 to rotate and move from the starting position A to the ending position C;

[0116] Step 3: At the termination position C, the drive component 3 separates from the corresponding plug-in component 7, disconnecting the drive.

[0117] Step 4: Reset the drive arm to the starting position A during idle travel;

[0118] Step 5: Repeat steps 1 to 5 to achieve 1 circumferential yaw of the main frame.

[0119] In step one, when the insertion component 7 reaches the starting position A, the radial cylinder 19 is activated. When the radial cylinder 19 drives the guide slide plate 14 to move the tower section 2 away from the axis O, the guide slide plate 14 has contact parts at both ends that abut against the outer side of the annular track 9. The guide slide plate 14 is guided and connected to the guide process sleeve 26 through the guide rod 18 to overcome the return spring 25, so that the center line of the telescopic pin 15 located at the starting position A passes through the axis O; then, the telescopic pin 15 extends and inserts into the insertion component 7.

[0120] In step two, several drive arms apply force alternately;

[0121] When each pair of drive arms uses drive cylinder A16 and drive cylinder B17, drive cylinder A16 and drive cylinder B17 respectively apply tension and thrust to the main frame 1, or drive cylinder A16 and drive cylinder drive arm B17 respectively apply thrust and tension to the main frame 1.

[0122] When rotating, monitor the pressure of each part of the rotating support 5, and adjust the force applied by the drive arm so that the pressure difference of each part of the rotating support 5 is less than the set threshold.

[0123] When rotating, the driving force of the drive arm on the main frame 1 first increases and then decreases.

[0124] In step three, when the telescopic pin 15 separates from the insertion part 7, the telescopic pin 15 moves away from the axis O and separates from the insertion part 7. The radial cylinder part 19 drives the guide slide plate 14 to move the tower part 2 closer to the axis O, so that the guide rod 18 separates from the ear seat part 12 or the guide slide plate 14.

[0125] In step four, the drive arm moves in the opposite direction, causing the guide slide plate 14 to move in the circular track 9.

[0126] As described in conjunction with embodiments, the present invention achieves continuous rotation of the main frame 1 and the tower section 2. Its inertial force is small during startup and shutdown, avoiding collisions. It can achieve uniform, low-resistance rotation, avoid dead spots, and can achieve intermittent or continuous rotation. The drive assembly 3 enables drive, the braking assembly 4 is used for braking after rotational yaw, the rotating support 5 achieves rotational connection, the circumferential side 6 is an annular sidewall, the telescopic pin 15 and the plug-in component 7 achieve a separable plug-in connection, the outer flange 8, the limiting annular platform 24; the inlaid collar B10 and inlaid collar A11 form an annular track 9, serving as a guide for the guide slide plate 14 and providing reverse support. The drive arm achieves hinged drive of the drive lug 12, the hinged seat 13 achieves connection, the drive cylinder A16 and drive cylinder B17 achieve multi-strategy drive rotation through a pull and push mechanism, the guide rod 18 provides positioning guidance during plug-in, and simultaneously avoids guiding connection during separation. The radial cylinder 19 drives the pull plate to move. The bottom wear-resistant block 20, the side wear-resistant block 21, and the end wear-resistant plate 22 achieve frictional contact. At the same time, it has good processability, wear resistance, and assembly, reducing the contact surface and friction. The return spring 25 achieves elastic return, the guide process sleeve 26 provides guidance, and the guide hole 27 facilitates the setting of the guide rod 18. The guide slide plate 14 moves relatively freely in the track during the return stroke, and during operation, it achieves positioning through the guide rod 18.

[0127] The present invention has been described in detail for the purpose of making the disclosure clearer, and the prior art will not be listed in detail.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. It is obvious to those skilled in the art that multiple technical solutions of the present invention can be combined. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A yaw component for a wind turbine generator set, characterized in that: A drive assembly (3) is provided between the main frame (1) and the tower (2); The drive assembly (3) has one or at least two drive arms; The drive arm drives the main frame section (1) to rotate circumferentially on the tower section (2) individually, simultaneously, or alternately and intermittently; the tower section (2) has a rotating support section (5) that is rotatably arranged with the main frame section (1); the rotating support section (5) has a circumferential side section (6), and a plurality of plug-in parts (7) are radially distributed on the circumferential side section (6); the drive assembly (3) is driven to connect with the plug-in parts (7); when the drive arm drives the main frame section (1) to rotate, the output force of the drive arm is changed, the rotational angular velocity of the main frame section (1) is changed, and / or the tangential acceleration of the main frame section (1) is changed. When the drive arm returns to its original position, the force transmission between the main frame (1) and the drive arm, or between the drive arm and the tower section (2), is disconnected. When the drive assembly (3) drives the main frame (1) to rotate, the drive assembly (3) is connected to the plug-in component (7); when the drive assembly (3) returns to its original position, the drive assembly (3) is separated from the plug-in component (7); the drive assembly (3) includes several hinge seats (13) provided on the main frame (1); the hinge seats (13) are hinged to drive arms; and ear seats (12) are hinged to the ends of the drive arms. There is one or at least two radial cylinder portions (19) on the ear seat portion (12); The radial cylinder section (19) is connected to a guide slide plate (14); A ring track (9) is provided on the outer side of the circumferential side (6) at the coaxial center O, and a guide slide (14) is in the ring track (9); the guide slide (14) corresponds to the circumferential side (6); A telescopic connection is provided on the ear seat (12) or the guide slide (14); the telescopic connection is adapted to connect or separate from the plug-in component (7); the main frame body (1) has an outer ring flange (8), and a limiting ring platform (24) is provided on the tower body (2). The two bottom sides of the circular track (9) are the outer ring flange (8) and the limiting circular platform (24). The guide slide (14) is radially movable in the annular track (9) along the axis O; an inlaid collar A (11) is provided on the outer ring flange (8), and an inlaid collar B (10) is provided on the limiting annular platform (24). The annular track (9) is located between the circumferential side (6), the outer flange (8), the limiting annular platform (24), the inlaid collar A (11), and the inlaid collar B (10); One or at least two guide holes are provided on the ear seat (12); a guide process sleeve (26) is provided in the guide hole. The guide slide (14) has a guide hole (27), and the guide hole (27) has a guide rod (18). The guide sleeve (26) is matched with the guide rod (18); there is a return spring (25) between the bottom of the guide hole and the guide rod (18). The drive arm adopts a drive cylinder section; The guide slide (14) and the ear seat (12) are connected by a guide rod (18); A telescopic pin (15) is provided on the ear seat (12) as a telescopic connection part, which is used to radially connect or disconnect with the plug-in part (7); the plug-in part (7) is a hole; The telescopic pin (15), the radial cylinder (19), and the guide rod (18) are arranged in parallel; When a plug-in connection is required, when the radial cylinder (19) drives the guide slide (14) to move away from the axis O, the guide slide (14) has contact parts at both ends that abut against the outer side of the annular track (9). The telescopic pin (15) is located on the vertical center line of the contact parts at both ends of the guide slide (14). The guide slide (14) overcomes the return spring (25) and is guided to connect with the guide process sleeve (26) through the guide rod (18). The telescopic pin (15) extends out and plugs into the plug-in component (7). When the telescopic pin (15) separates from the plug-in part (7), the telescopic pin (15) moves away from the axis O and separates from the plug-in part (7). The radial cylinder part (19) drives the guide slide plate (14) to move closer to the axis O, so that the guide rod (18) separates from the ear seat part (12) or the guide slide plate (14).

2. The yaw assembly of a wind turbine generator set according to claim 1, characterized in that: The drive arm includes drive cylinder A (16) and / or drive cylinder B (17); when drive cylinder A (16) and drive cylinder B (17) are used, drive cylinder A (16) and drive cylinder B (17) respectively apply tension and thrust to the main frame body (1) or drive cylinder A (16) and drive cylinder B (17) respectively apply thrust and tension to the main frame body (1); A pressure sensor is installed between the main frame (1) and the tower section (2), and the power parameters of the corresponding drive arm are adjusted according to the pressure magnitude of the pressure sensor. The telescopic pin (15) is hydraulically, electrically, or mechanically driven to extend or retract; A bottom wear-resistant block (20) is provided on the front of the bottom of the guide slide plate (14), a side wear-resistant block (21) is provided on the side, and / or an end wear-resistant plate (22) is provided on the back of both ends. The surface of the end wear-resistant plate (22) is set as a bevel or arc surface; The bottom wear-resistant block (20) corresponds to the outer wall of the circumferential side (6), the side wear-resistant block (21) corresponds to the corresponding end face of the outer ring flange (8) or the corresponding end face of the limiting ring platform (24), and the surface of the end wear-resistant plate (22) corresponds to the inner wall of the inlaid ring A (11) and / or the inner wall of the inlaid ring B (10). The drive arm is equipped with limit switches, travel switches and / or rotation angle sensors to control the travel of the drive arm; A travel switch, grating, limit switch and / or rotation angle sensor are provided between the tower section (2) and the main frame section (1) to determine the insertion part (7) so that the telescopic pin (15) can be inserted.

3. A yaw device for a wind turbine generator set, characterized in that: A braking assembly (4) and a yaw assembly of the wind turbine generator set as described in claim 1 or 2 are provided between the main frame body (1) and the tower body (2); A connecting frame (23) is provided on the tower section (2) or the main frame section (1). When the drive arm is working, the drive force of the drive arm on the upwind side is greater than or equal to the drive force of the drive arm on the downwind side. When the drive arm drives the rotating support (5) to rotate via the telescopic pin (15), it has a state B in which the center line of the telescopic pin (15) is perpendicular to the center line of the drive cylinder; the center line of the telescopic pin (15) passes through the axis O. State B is located between the starting position A and the ending position C of the drive arm's rotation, or State B is located at the starting position A of the drive arm's rotation.

4. A yaw method for a wind turbine generator set, characterized in that: Using the device described in claim 3; When yaw is required, adjust the wheel hub direction according to the wind direction; Step 1: The drive assembly (3) is driven to connect with the corresponding plug-in component (7), so that the main frame body (1) and the tower body (2) can transmit force. Step 2: Apply force to the drive arm to start the tower section (2) to rotate from the starting position A to the ending position C; Step 3: At the termination position C, the drive component (3) is separated from the corresponding plug-in component (7) to disconnect the drive; Step 4: Reset the drive arm to the starting position A during idle travel; Step 5: Repeat steps 1 to 4 to achieve circumferential yaw of the main frame (1).

5. The yaw method for a wind turbine generator set according to claim 4, characterized in that: In step one, when the plug-in component (7) reaches the starting position A, the radial cylinder (19) is activated. When the radial cylinder (19) drives the guide slide (14) to move away from the axis O, the guide slide (14) has contact parts at both ends that abut against the outer side of the annular track (9). The guide slide (14) is guided and connected to the guide process sleeve (26) through the guide rod (18) to overcome the return spring (25), so that the center line of the telescopic pin (15) located at the starting position A passes through the axis O; then, the telescopic pin (15) extends out and plugs into the plug-in component (7); In step two, several drive arms apply force alternately; When each pair of drive arms uses drive cylinder A (16) and drive cylinder B (17), drive cylinder A (16) and drive cylinder B (17) respectively apply tension and thrust to the main frame body (1) or drive cylinder A (16) and drive cylinder B (17) respectively apply thrust and tension to the main frame body (1); When rotating, monitor the pressure of each part of the rotating support (5), and adjust the force applied by the drive arm so that the pressure difference of each part of the rotating support (5) is less than the set threshold. When rotating, the driving force of the drive arm on the main frame (1) first increases and then decreases; In step three, when the telescopic pin (15) separates from the plug-in component (7), the telescopic pin (15) moves away from the axis O and separates from the plug-in component (7). The radial cylinder (19) drives the guide slide plate (14) to move closer to the axis O, so that the guide rod (18) separates from the ear seat (12) or the guide slide plate (14). In step four, the drive arm moves in the opposite direction, causing the guide slide (14) to move in the circular track (9).

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