Yaw assembly, device, and method for wind turbine

Abstract

The present invention relates to a yaw assembly, device, and method for a wind turbine. A drive assembly is arranged between a main frame portion and a tower portion. The drive assembly is provided with one or at least two drive arms. The drive arms individually, simultaneously, or alternately and intermittently drive the main frame portion to rotate circumferentially on the tower portion. The drive assembly is intermittently drive-connected to insertion components. During the reset return stroke of the drive arms, force transmission between the main frame portion and the drive arms, or between the drive arms and the tower portion, is in a disengaged state.

Description

Wind turbine yaw assembly, device and method Technical Field

[0001] The invention relates to a yaw component, equipment and method for a wind generator set. Background Art

[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, thereby achieving the goal of the hub aligning with the wind direction.

[0003] The working principle of a conventional yaw system is as follows: if adjustment is required according to wind direction, the hub is made to swing by engaging a set of gear rings, such as a wind power yaw system and a method for replacing yaw system friction plates with application number 202110959660.2. However, its tooth engagement has problems such as tooth gnawing and tooth breaking, loud noise, and the need for regular maintenance. At startup, it is driven by friction, resulting in severe wear on the tooth surface.

[0004] There are also dual cylinder drives, but due to the stroke limit of the cylinder, it is impossible to achieve 360° rotation, and there are many problems such as card points. In addition, when starting, a lot of useless work is consumed.

[0005] How to reduce useless work and improve the utilization rate of useful work, no proposal was made on how to reduce the inertial force of the yaw swing of the hub (nacelle), and no proposal or discovery was made on how to solve the problem of overcoming or reducing the rotational deflection wear caused by the torque, bending moment and deflection generated by wind when overcoming yaw. The proposal of these technical problems is the creative discovery of the applicant.

[0006] In addition, how to achieve low power consumption, reduce useless work, increase useful work, reduce maintenance frequency, and achieve circular motion have become technical problems that need to be solved urgently. Summary of the Invention

[0007] The technical problem to be solved by the present invention is generally to provide a wind turbine generator set yaw component, equipment and method.

[0008] In order to solve the above problems, the technical solution adopted by the present invention is:

[0009] A yaw assembly of a wind turbine generator set, the unit includes a drive assembly arranged between a main frame portion and a tower portion;

[0010] A drive assembly having one or at least two drive arms;

[0011] The driving arms drive the main frame body to rotate circumferentially on the tower part individually, simultaneously or alternately and intermittently.

[0012] As a further improvement of the above technical solution:

[0013] The drive assembly is intermittently driven and connected to the plug-in component;

[0014] When the driving arm returns to its original position, the force transmission state between the main frame body and the driving arm or the force transmission state between the driving arm and the tower part is in a disconnected state.

[0015] When the driving arm drives the main frame body to rotate, the driving arm output force change setting, the main frame body rotation angular velocity change setting and / or the main frame body tangential acceleration change setting.

[0016] The tower portion is provided with a rotating support portion that is rotatably arranged with the main frame portion; the rotating support portion has a circumferential side portion, and a plurality of plug-in components are radially distributed on the circumferential side portion;

[0017] When the driving assembly drives the main frame body to rotate, the driving assembly is connected to the plug-in component; when the driving assembly returns to reset, the driving assembly is separated from the plug-in component.

[0018] The driving assembly includes a plurality of hinged seats arranged on the main frame body; the hinged seats are hinged with driving arms; and the ends of the driving arms are hinged with ear seats;

[0019] The radial oil cylinder portion is connected with a guide slide;

[0020] An annular track is provided on the outer side of the circumferential side coaxially with the axis O, and the guide slide is in the annular track; the guide slide corresponds to the circumferential side;

[0021] A telescopic connection portion is provided on the ear seat portion or the guide slide plate; the telescopic connection portion is adapted to be connected or separated with the plug-in component.

[0022] The main frame body has an outer flange, and a limiting annular platform is provided on the tower;

[0023] The two bottom sides of the annular track are respectively provided with an outer ring flange and a limiting annular platform; the width of the annular track groove is greater than the thickness of the guide slide;

[0024] An inlay ring A is provided on the outer ring flange, and an inlay ring B is provided on the limiting annular platform;

[0025] The annular track is between the circumferential side, the outer ring flange, the limiting annular platform, the inlaid ring A and the inlaid ring B;

[0026] One or at least two guide holes are provided on the ear seat; a guide process sleeve is provided in the guide hole.

[0027] A guide hole portion is provided on the guide slide, and a guide rod is provided in the guide hole portion;

[0028] The guide process sleeve is matched with the guide rod; there is a return spring between the bottom of the guide hole and the guide rod;

[0029] There is one or at least two radial oil cylinder parts on the ear seat part;

[0030] The guide slide plate is connected to the ear seat portion through a guide rod;

[0031] A telescopic plug is provided on the ear seat portion as a telescopic connection portion for radially plugging and connecting or separating with the plug-in component; the plug-in component is a hole;

[0032] The telescopic latch, radial oil cylinder and guide rod are arranged in parallel;

[0033] When plug-in connection is required, the radial cylinder drives the guide slide to move the tower part away from the axis O. Contact parts are provided at both ends of the guide slide to abut against the outer side of the annular track. The telescopic latch is located on the vertical center line of the contact parts at both ends of the guide slide. The guide slide overcomes the return spring through the guide rod and is connected to the guide process sleeve. The telescopic latch extends and plugs into the plug-in component.

[0034] When the telescopic pin is separated from the plug-in component, the telescopic pin moves away from the axis O and separates from the plug-in component, and the radial cylinder drives the guide slide to move the tower part closer to the axis O, so that the guide rod is separated from the ear seat part or the guide slide.

[0035] The driving arm includes a driving cylinder A and / or a driving cylinder B; when the driving cylinder A and the driving cylinder B are used, the driving cylinder A and the driving cylinder B respectively apply a pulling force and a pushing force to the main frame body, or the driving cylinder A and the driving cylinder B respectively apply a pushing force and a pulling force to the main frame body;

[0036] The rotating support part adopts a slewing bearing and a bearing seat matching the slewing bearing;

[0037] A pressure sensor is provided between the main frame and the tower. The power parameters of the corresponding driving arm can be adjusted according to the size of the pressure sensor. The power parameters include driving force, control speed and / or pressure.

[0038] The telescopic latch is hydraulically, electrically or mechanically driven for telescopic extension;

[0039] 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 end wear-resistant plates are provided on the back of both ends;

[0040] The surface of the end wear-resistant plate is inclined or curved;

[0041] The bottom wear block corresponds to the outer side wall of the circumferential side portion, the side wear 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 plate corresponds to the inner side wall of the embedded ring A and / or the inner side wall of the embedded ring B;

[0042] The driving arm is equipped with a travel switch, a limit switch and / or a rotation angle sensor to control the travel of the driving arm;

[0043] A travel switch, a grating, a limit switch and / or a rotation angle sensor are provided between the tower portion and the main frame body for determining the plug-in components so that the telescopic latch can be plugged in.

[0044] A yaw device for a wind turbine generator set, wherein a brake assembly and the above-mentioned yaw assembly for the wind turbine generator set are arranged between a main frame portion and a tower portion;

[0045] A connecting frame is provided on the tower part or the main frame part;

[0046] When the driving arm is working, the driving force of the driving arm on the upwind side is greater than or equal to the driving force of the driving arm on the downwind side;

[0047] When the driving arm is driven to rotate by the telescopic latch, the center line of the telescopic latch is perpendicular to the center line of the telescopic latch in state B; the center line of the telescopic latch passes through the axis O;

[0048] State B is located between the starting position A and the ending position C of the driving arm's driven rotation, or state B is located at the starting position A of the driving arm's driven rotation.

[0049] A yaw method for a wind turbine generator set, when yaw is required, the direction of the hub is adjusted according to the wind direction;

[0050] Step 1: The driving assembly is connected to the corresponding plug-in component to achieve force transmission between the main frame body and the tower body;

[0051] Step 2: The driving arm applies force to start the tower section to rotate from the starting position A to the ending position C;

[0052] Step 3: At the end position C, the drive assembly is separated from the corresponding plug-in component to disconnect the drive;

[0053] Step 4: The driving arm returns to the starting position A in idle travel;

[0054] Step 5: Repeat steps 1 to 5 to achieve circumferential yaw of the main frame.

[0055] As a further improvement of the above technical solution:

[0056] With the aid of the above-mentioned equipment;

[0057] In step 1, when the plug-in component reaches the starting position A, the radial cylinder is activated, and the radial cylinder drives the guide slide to move the tower part away from the axis O. Contact portions are provided at both ends of the guide slide to abut against the outer side of the annular track. The guide slide overcomes the return spring through the guide rod and is connected to the guide process sleeve, so that the center line of the telescopic pin at the starting position A passes through the axis O. Then, the telescopic pin is extended to plug into the plug-in component.

[0058] In step 2, a plurality of driving arms apply force alternately;

[0059] When each pair of driving arms uses a driving cylinder A and a driving cylinder B, the driving cylinder A and the driving cylinder B respectively apply a pulling force and a pushing force to the main frame body, or the driving cylinder A and the driving cylinder driving arm B respectively apply a pushing force and a pulling force to the main frame body;

[0060] When rotating, the pressure of each part of the rotating support is monitored, and the pressure difference of each part of the rotating support is adjusted to be less than the set threshold by adjusting the force applied by the driving arm;

[0061] When rotating, the driving force of the driving arm on the main frame body increases first and then decreases;

[0062] In step 3, when the telescopic latch is separated from the plug-in component, the telescopic latch moves away from the axis O and separates from the plug-in component, and the radial cylinder portion drives the guide slide to move the tower portion toward the axis O, so that the guide rod is separated from the ear seat portion or the guide slide;

[0063] In step 4, the driving arm moves in the opposite direction, causing the guide slide to move in the circular track.

[0064] The invention has reasonable design, low cost, durability, safety and reliability, simple operation, time and labor saving, money saving, compact structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] FIG1 is a schematic diagram of the yaw operation structure of the present invention.

[0066] FIG2 is a schematic diagram of the yaw explosion structure of the present invention.

[0067] FIG3 is a schematic diagram of the tower structure of the present invention.

[0068] FIG4 is a schematic diagram of the yaw principle of the present invention.

[0069] FIG5 is a schematic diagram of the telescopic latch in use according to the present invention.

[0070] FIG6 is a schematic structural diagram of the guide slide of the present invention.

[0071] FIG7 is a schematic structural diagram of the rotary support portion of the present invention.

[0072] FIG8 is a schematic diagram of the telescopic latch structure of the present invention.

[0073] FIG9 is a schematic diagram of the ear seat portion of the present invention in use structure.

[0074] FIG10 is a schematic diagram of the structure of the driving cylinder A of the present invention.

[0075] FIG11 is a schematic diagram of the outer ring flange structure of the present invention.

[0076] FIG12 is a schematic diagram of an improved structure of another embodiment of the present invention.

[0077] Among them: 1. Main frame body; 2. Tower body; 3. Drive assembly; 4. Brake assembly; 5. Rotating support part; 6. Circumferential side; 7. Plug-in component; 8. Outer ring flange; 9. Annular track; 10. Inlaid ring B; 11. Inlaid ring A; 12. Ear seat part; 13. Articulated seat part; 14. Guide slide; 15. Telescopic pin; 16. Drive cylinder A; 17. Drive cylinder B; 18. Guide rod; 19. Radial cylinder part; 20. Bottom wear block; 21. Side wear block; 22. End wear plate; 23. Connecting frame; 24. Limiting annular table; 25. Reset spring; 26. Guide process sleeve; 27. Guide hole part. DETAILED DESCRIPTION

[0078] As shown in Figures 1-12, the wind turbine generator set yaw assembly, equipment and method of this embodiment, specifically, the wind turbine generator set yaw assembly of this embodiment, its unit includes a drive assembly 3 arranged between the main frame body 1 and the tower part 2; thereby realizing driven rotation.

[0079] The drive assembly 3 can be arranged in a circular array of multiple pairs, each pair can have one or at least two drive arms, so as to achieve better traction, preferably three groups, which not only meets the traction requirements but also ensures sufficient space for installation, thus distinguishing it from the existing gear ring drive. At the same time, compared with the electromagnetic drive, it avoids electromagnetic interference, eliminates the need for a large number of shielding devices to avoid electromagnetic interference, and avoids magnetic leakage.

[0080] As a specific action protection, the driving arm drives the main frame body 1 to rotate circumferentially on the tower part 2 individually, simultaneously or alternately and intermittently. As a basic protection, at least one driving arm can be moved, preferably multiple driving arms are moved at the same time, so as to achieve uniform and balanced drive. Of course, multiple driving arms can also be used alternately to achieve fine-tuning, and driving arms in different directions of the same family can be alternated, thereby solving the dead point that may exist in the linear motion arm. It is preferred that driving arms in different groups of the same direction can move simultaneously.

[0081] The driving assembly 3 is intermittently driven and connected to the plug-in component 7; since the driving arm needs to return, the driving arm is intermittently connected. However, when an alternating method is adopted, although a single driving arm may be intermittently driven, on the whole, the alternating action of multiple driving arms can realize continuous action of the main frame body 1.

[0082] When the driving arm returns to its idle stroke, the force transmission state between the main frame body 1 and the driving arm or the force transmission state between the driving arm and the tower part 2 is in a disconnected state. Because it needs to be reset for secondary driving, separation can better enable re-driving.

[0083] Compared with the huge inertia force of gear drive starting and braking, the speed cannot be adjusted during rotation. The driving arm method of the present invention, when the driving arm drives the main frame body 1 to rotate, the driving arm output force change setting, the rotation angular velocity change setting of the main frame body 1 and / or the tangential acceleration change setting of the main frame body 1, first accelerates and then decelerates, thereby achieving low inertia force at start and stop, and high rotation speed in the middle, and avoiding side wall friction and eccentric wear through radial force component, thereby reducing friction resistance.

[0084] There is a rotating support part 5 on the tower part 2, which is rotatably arranged with the main frame body 1. It is generally a slewing bearing. Of course, it can also be a sliding bearing, a magnetic levitation method or a static pressure bearing to realize the slewing support; the rotating support part 5 has a circumferential side part 6, and a number of plug-in components 7 are radially distributed on the circumferential side part 6; it can be a conventional structure such as a protrusion or a depression. In short, it can realize connection and transmit force to drive the rotation component, such as a pin hole structure, a raised handrail structure, a hand-on-hand structure, etc. The pin hole structure is preferably used in the following embodiments.

[0085] As a specific action state characteristic restriction, when the drive component 3 drives the main frame body 1 to rotate, the drive component 3 is connected to the plug-in component 7; when the drive component 3 returns and resets, the drive component 3 is separated from the plug-in component 7, thereby achieving better forward drive and fast reverse return without resistance.

[0086] As a specific improved embodiment, the drive assembly 3 includes a plurality of hinged seats 13 disposed on the main frame 1 to provide mounting support. A drive arm is hingedly connected to the hinged seats 13; an ear seat 12 is hingedly connected to the end of the drive arm. Of course, reversing the connection of the drive arm, and reversing the connection of the main frame 1 and tower 2 according to the present invention, would also constitute infringement. Figure 12 provides an example of this.

[0087] The radial cylinder portion 19 is connected to the guide slide 14. An annular track 9 is provided coaxially with the circumferential side portion 6. The guide slide 14 is located in the annular track 9. The guide slide 14 corresponds to the circumferential side portion 6. Thus, the guide slide 14 is driven to move slightly radially on the annular track 9.

[0088] A telescopic connection portion is provided on the ear seat portion 12 or the guide slide 14; the telescopic connection portion is adapted to connect or separate with the plug-in component 7. The telescopic connection portion is a general concept. When the plug-in component 7 is a hole, the telescopic connection portion is a pin; when the plug-in component 7 is a pin, the telescopic connection portion is a hole; when the plug-in component 7 is a protrusion, the telescopic connection portion is a matching protrusion; when the plug-in component 7 is a handrail, the telescopic connection portion is a matching handrail.

[0089] Preferably, the main frame body 1 has an outer ring flange 8, and a limiting annular platform 24 is set on the tower part 2; as shown in Figure 8, the outer ring flange 8 and the limiting annular platform 24 can also be placed on the main frame body 1 or on the tower part 2.

[0090] As shown, the outer ring flange 8 and the limiting ring platform 24 are respectively formed on the bottom sides of the annular track 9. The width of the groove of the annular track 9 is greater than the thickness of the guide slide 14, thereby providing space for movement. Of course, other equivalent track forms can also be used.

[0091] Preferably, an inlaid ferrule A11 is provided on the outer ring flange 8, and an inlaid ferrule B10 is provided on the limiting annular platform 24. The inlaid ferrule A11 is made of wear-resistant material and is coaxially arranged. The inlaid ferrule A11 can limit the outward movement of the guide slide 14 and serve as a reference for the reaction force.

[0092] Preferably, the annular track 9 is between the circumferential side portion 6, the outer ring flange 8, the limiting annular platform 24, the embedded ring A11 and the embedded ring B10;

[0093] One or at least two guide holes are provided on the ear seat portion 12; a guide process sleeve 26 is provided in the guide hole. Of course, a through hole can also be used, and the hole opening is chamfered to facilitate the entry and exit of the guide rod 18;

[0094] A guide hole 27 is provided on the guide slide 14, and a guide rod 18 is fixed in the guide hole 27 to play a guiding role;

[0095] The guide process sleeve 26 is matched with the guide rod 18; there is a reset spring 25 between the bottom of the guide hole and the guide rod 18; thereby achieving automatic reset, which is preferred.

[0096] There is one or at least two radial cylinder parts 19 on the ear seat part 12 to achieve driving, preferably two, which can ensure smooth propulsion;

[0097] The guide slide 14 is connected to the ear seat portion 12 through a guide rod 18 to realize the driving activity of the guide slide; a telescopic pin 15 is provided on the ear seat portion 12 as a telescopic connection portion, which is used to radially connect or separate with the plug-in component 7; the plug-in component 7 is a hole; the hole can be a long hole, a slotted hole or a round hole, and the end can have a chamfer, which is easy to process, avoids obstruction, and saves space.

[0098] The telescopic latch 15, the radial cylinder portion 19, and the guide rod 18 are arranged in parallel, thereby achieving flexible guidance;

[0099] When a plug-in connection is required, the radial cylinder part 19 drives the guide slide 14 to move the tower part 2 away from the axis O. Contact parts are provided at both ends of the guide slide 14 to abut the outer side surface 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 reset spring 25 and the guide process sleeve 26 through the guide rod 18; the telescopic pin 15 is extended to be plugged into the plug-in component 7; it uses the guide slide 14 as a chord, and the guide rod 18 adjusts the telescopic pin 15 as the center line, which must pass through the axis, so as to facilitate flexible and accurate 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.

[0100] When the telescopic latch 15 is separated from the plug-in component 7, the telescopic latch 15 moves away from the axis O and separates from the plug-in component 7. The radial cylinder portion 19 drives the guide slide 14 to move the tower portion 2 closer to the axis O, so that the guide rod 18 is separated from the ear seat portion 12 or the guide slide 14, so that the guide slide 14 can be adjusted and moved more freely and flexibly in the annular track 9, which is not available in the prior art.

[0101] In order to better overcome the dead point of the cylinder drive and expand the stroke of the cylinder drive, each pair of driving arms includes a driving cylinder A16 and / or a driving cylinder B17; when the driving cylinder A16 and the driving cylinder B17 are used, the driving cylinder A16 and the driving cylinder B17 respectively apply pulling force and pushing force to the main frame body 1, or the driving cylinder A16 and the driving cylinder B17 respectively apply pushing force and pulling force to the main frame body 1; due to their different directions, they can effectively overcome the dead points of each other, and at the same time realize the complementarity of driving force, thereby achieving better and smoother driving rotation, and the acting force first increases steadily and then decreases steadily, thereby greatly reducing the inertia force, overcoming the traditional cylinder start-up requires huge braking force to offset the braking inertia force.

[0102] Preferably, the rotary support portion 5 adopts a slewing bearing and a bearing seat that matches the slewing bearing;

[0103] As an optimization, a pressure sensor is provided between the main frame body 1 and the tower body 2. The dynamic parameters of the driving force of the corresponding driving arm are adjusted according to the size of the pressure sensor. The dynamic parameters include the driving force size, control speed and / or pressure. When the pressure on one side is large, compensation is made by adjusting the driving force of the driving arm on that side accordingly. This is a technical problem that has not been thought of or discovered in the prior art.

[0104] As an example, the telescopic latch 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;

[0105] In order to improve the processability, increase the wear resistance and facilitate replacement, a block structure is adopted, and a bottom wear-resistant block 20 is provided on the front of the bottom of the guide slide 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;

[0106] The surface of the end wear-resistant plate 22 is an inclined surface or a curved surface, and the curved surface is theoretically preferred for accurate positioning;

[0107] As a definition of the action contact position, the bottom wear block 20 corresponds to the outer wall of the circumferential side portion 6, the side wear block 21 corresponds to the corresponding end surface of the outer ring flange 8 or the corresponding end surface of the limiting annular platform 24, and the surface of the end wear plate 22 corresponds to the inner wall of the inlaid ring A11 and / or the inner wall of the inlaid ring B10;

[0108] In order to control the motion stroke of the driving arm and realize the use of the optimal driving force stroke section of the driving arm, the driving arm is equipped with a travel switch, a limit switch and / or a rotation angle sensor for controlling the stroke of the driving arm;

[0109] In order to control the rotation angle and position and facilitate the plug-in action, a travel switch, a grating, a limit switch and / or a rotation angle sensor are provided between the tower part 2 and the main frame body 1 to determine the plug-in component 7 so that the telescopic pin 15 can be plugged in.

[0110] As a whole machine protection, the wind turbine generator set yaw device of this embodiment is provided with a brake assembly 4 and the above-mentioned wind turbine generator set yaw assembly between the main frame body 1 and the tower part 2;

[0111] A connecting frame 23 is provided on the tower portion 2 or the main frame portion 1 . The main frame portion 1 is used to connect to the wind turbine head. The connecting frame 23 is not limited to the structure in the attached figure.

[0112] In traditional yaw, only the angle is adjusted mechanically, and no consideration has been given to how to use 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. For this reason, the present invention creatively proposes how to use wind power to turn disadvantages into advantages to perform auxiliary energy-saving yaw, thereby reducing wear and resistance and better realizing rotational drive.

[0113] When the driving arm is driven to rotate by the telescopic latch 15, the center line of the telescopic latch 15 is in state B perpendicular to the center line of the telescopic latch 15; the center line of the telescopic latch 15 passes through the axis O; at this time, the tangential force is maximum and the normal force is minimum, that is, the rotation speed is high and the radial force is minimum, which achieves rapid rotation.

[0114] Its clever design lies in that state B is located between the starting position A and the ending position C of the driving arm driving the rotation, or state B is located at the starting position A of the driving arm driving the rotation, which is not available in the existing technology. It cleverly solves the problem of large inertia force, thereby achieving effective rotation and avoiding collision. At the same time, it overcomes the disadvantages of gear transmission and achieves smooth movement.

[0115] In order to achieve reasonable drive rotation, the yaw method of the wind turbine generator set in this embodiment adjusts the direction of the hub according to the wind direction when yaw is required;

[0116] Step 1: The driving assembly 3 is connected to the corresponding plug-in component 7 to achieve force transmission between the main frame body 1 and the tower part 2;

[0117] Step 2: The driving arm applies force to start the tower section 2 to rotate from the starting position A to the ending position C;

[0118] Step 3: At the end position C, the driving component 3 is separated from the corresponding plug-in component 7 to disconnect the drive;

[0119] Step 4: The driving arm returns to the starting position A in idle travel;

[0120] Step 5: Repeat steps 1 to 5 to achieve circumferential yaw of the main frame body 1.

[0121] In step 1, when the plug-in component 7 reaches the starting position A, the radial cylinder portion 19 is activated. The radial cylinder portion 19 drives the guide slide 14 to move the tower portion 2 away from the axis O. Contact portions are provided at both ends of the guide slide 14 to abut against the outer side surface of the annular track 9. The guide slide 14 is 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 latch 15 at the starting position A passes through the axis O. Then, the telescopic latch 15 is extended to plug into the plug-in component 7.

[0122] In step 2, a plurality of driving arms apply force alternately;

[0123] When each pair of driving arms uses a driving cylinder A16 and a driving cylinder B17, the driving cylinder A16 and the driving cylinder B17 apply a pulling force and a pushing force to the main frame body 1 respectively, or the driving cylinder A16 and the driving cylinder driving arm B17 apply a pushing force and a pulling force to the main frame body 1 respectively;

[0124] When rotating, the pressure of each part of the rotating support part 5 is monitored, and the force applied by the driving arm is adjusted so that the pressure difference of each part of the rotating support part 5 is less than the set threshold;

[0125] When rotating, the driving force of the driving arm on the main frame body 1 first increases and then decreases;

[0126] In step 3, when the telescopic latch 15 is separated from the plug-in component 7, the telescopic latch 15 moves away from the axis O and separates from the plug-in component 7, and the radial cylinder portion 19 drives the guide slide 14 to move the tower portion 2 closer to the axis O, so that the guide rod 18 is separated from the ear seat portion 12 or the guide slide 14;

[0127] In step 4, the driving arm moves in the opposite direction, so that the guide slide 14 moves in the annular track 9 .

[0128] As for the beneficial effects and technical problems solved by the present invention, the present invention will be described in conjunction with an embodiment. The present invention achieves continuous rotation of the main frame 1 and tower 2. During startup and shutdown, the inertial force is low, avoiding collisions. This allows for uniform, low-resistance rotation, avoids dead spots, and enables intermittent or continuous rotation. A drive assembly 3 provides drive, a brake assembly 4 is used for braking after yaw rotation, a rotational support 5 achieves rotational connection, a circumferential side 6 is an annular sidewall, a telescopic latch 15 and a plug-in component 7 achieve a detachable plug-in connection, an outer flange 8, and a limiting annular platform 24. Inlaid ferrules B10 and A11 form an annular track 9, which serves as a guide and reverse support for the guide slide 14. A drive arm achieves articulated drive of the drive lug 12, achieving connection with the articulated seat 13. Drive cylinders A16 and B17 achieve multi-strategy rotational drive through a pull-and-push mechanism. Guide rods 18 provide positioning and guidance during connection, while also avoiding a guide connection during separation. The radial cylinder part 19 realizes the driving pulling plate action, and the bottom wear-resistant block 20, the side wear-resistant block 21, and the end wear-resistant plate 22 realize friction contact. At the same time, it has good processability, wear resistance, and good assembly, reduces the contact surface, reduces friction, and the reset spring 25 realizes elastic reset. The guide process sleeve 26 realizes guidance, and the guide hole part 27 is convenient for setting the guide rod 18; the guide slide 14 moves relatively freely in the track during the return stroke, and when working, it realizes positioning through the guide rod 18.

[0129] The present invention is fully described for a clearer disclosure, and the prior art is not listed one by one.

[0130] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that the technical solutions described in the above embodiments may be modified or some of the technical features may be replaced with equivalents. It is also obvious for those skilled in the art to combine multiple technical solutions of the present invention. However, such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A yaw assembly of a wind turbine generator, characterized in that: The unit includes a drive assembly (3) disposed between the main frame body portion (1) and the tower barrel portion (2); The drive assembly (3) has one or at least two drive arms; The drive arms drive the main frame body portion (1) to rotate circumferentially on the tower barrel portion (2) individually, simultaneously or alternately and intermittently.

2. The yaw assembly of the wind turbine according to claim 1, wherein: On the tower barrel portion (2), there is a rotary support portion (5) rotatably provided with the main frame body portion (1); the rotary support portion (5) has a circumferential side portion (6), and a number of plug-in components (7) are radially distributed on the circumferential side portion (6); the drive assembly (3) is drivingly connected to the plug-in components (7).

3. The yaw assembly of the wind turbine according to claim 1, characterized in that: When the drive arms drive the main frame body portion (1) to rotate, the output force of the drive arms is variably set, the rotational angular velocity of the main frame body portion (1) is variably set, and / or the tangential acceleration of the main frame body portion (1) is variably set; When the drive arms return during the reset stroke, the force transmission state between the main frame body portion (1) and the drive arms or the force transmission state between the drive arms and the tower barrel portion (2) is in a disconnected state.

4. The yaw assembly of the wind turbine according to claim 1, wherein: On the tower barrel portion (2), there is a rotary support portion (5) rotatably provided with the main frame body portion (1); When the drive assembly (3) drives the main frame body portion (1) to rotate, the drive assembly (3) is connected to the plug-in components (7); when the drive assembly (3) returns to the reset position, the drive assembly (3) is separated from the plug-in components (7).

5. The yaw assembly of the wind turbine according to claim 4, characterized in that: The drive assembly (3) includes a number of hinge seat portions (13) provided on the main frame body portion (1); the hinge seat portions (13) are hinged with drive arms; an ear seat portion (12) is hinged at the end of the drive arms; The radial oil cylinder portion (19) is connected with a guide sliding plate (14); An annular track (9) is coaxially provided with the center O outside the circumferential side portion (6), and the guide sliding plate (14) is in the annular track (9); the guide sliding plate (14) corresponds to the circumferential side portion (6); A telescopic connection portion is provided on the ear seat portion (12) or the guide sliding plate (14); the telescopic connection portion is adaptively connected or separated from the plug-in components (7).

6. The yaw assembly of the wind turbine according to claim 5, characterized in that: The main frame body portion (1) has an outer ring flange member (8), and a limiting annular platform (24) is provided on the tower barrel portion (2); The two bottom sides of the annular track (9) are respectively the outer ring flange member (8) and the limiting annular platform (24); The guide sliding plate (14) is movably provided radially along the center O in the annular track (9); an inlaid ring A (11) is provided on the outer ring flange member (8), and an inlaid ring B (10) is provided on the limiting annular platform (24); The annular track (9) is between the circumferential side portion (6), the outer ring flange member (8), the limiting annular platform (24), the inlaid ring A (11) and the inlaid ring B (10); One or at least two guide hole positions are provided on the ear seat portion (12); a guide process sleeve (26) is provided in the guide hole positions, There is a guide hole portion (27) on the guide sliding plate (14), and a guide rod (18) is in the guide hole portion (27); The guide process sleeve (26) is matched with the guide rod (18); a return spring (25) is between the bottom of the guide hole position and the guide rod (18); One or at least two radial oil cylinder portions (19) are provided on the ear seat portion (12); The drive arms adopt drive oil cylinder portions (19); The guiding slide plate (14) is guidingly connected to the ear seat part (12) through a guiding rod member (18); An expansion and retraction plug pin (15) serving as an expansion and retraction connecting part is arranged on the ear seat part (12) and is used for radially plugging and connecting or separating from a plugging component (7); the plugging component (7) is a hole; The expansion and retraction plug pin (15), the radial oil cylinder part (19), and the guiding rod member (18) are arranged in parallel; When plugging and connecting is required, when the radial oil cylinder part (19) drives the guiding slide plate (14) to move away from the axis O of the tower barrel part (2), contact parts that abut against the outer side surface of the annular track (9) are arranged at both ends of the guiding slide plate (14). The expansion and retraction plug pin (15) is located on the vertical center line of the contact parts at both ends of the guiding slide plate (14). The guiding slide plate (14) is guidingly connected to the guiding process sleeve (26) through the guiding rod member (18) against the reset spring (25); the expansion and retraction plug pin (15) extends out to be plugged with the plugging component (7); When the expansion and retraction plug pin (15) is separated from the plugging component (7), the expansion and retraction plug pin (15) moves away from the axis O and is separated from the plugging component (7). The radial oil cylinder part (19) drives the guiding slide plate (14) to move close to the axis O of the tower barrel part (2), so that the guiding rod member (18) is separated from the ear seat part (12) or the guiding slide plate (14).

7. The yaw assembly of a wind turbine according to claim 6, characterized in that: The driving arm includes a driving oil cylinder A (16) and / or a driving oil cylinder B (17); when the driving oil cylinder A (16) and the driving oil cylinder B (17) are adopted, the driving oil cylinder A (16) and the driving oil cylinder B (17) respectively apply a pulling force and a pushing force to the main frame body part (1) or the driving oil cylinder A (16) and the driving oil cylinder B (17) respectively apply a pushing force and a pulling force to the main frame body part (1); A pressure sensor is arranged between the main frame body part (1) and the tower barrel part (2), and the power parameters of the corresponding driving arm are adjusted according to the magnitude of the pressure sensor; The expansion and retraction plug pin (15) is expanded and retracted by oil pressure, electric drive or mechanical drive; A bottom wear-resistant block (20) is arranged on the front surface of the bottom of the guiding slide plate (14), a side wear-resistant block (21) is arranged on the side part, and / or end wear-resistant plates (22) are arranged on the back surfaces of both ends; The surface of the end wear-resistant plate (22) is arranged as an inclined surface or a curved surface; The bottom wear-resistant block (20) corresponds to the outer side wall of the circumferential side part (6), the side wear-resistant block (21) corresponds to the corresponding end surface of the outer ring flange part (8) or the corresponding end surface of the limiting annular platform (24), and the surface of the end wear-resistant plate (22) corresponds to the inner side wall of the inlay ring A (11) and / or the inner side wall of the inlay ring B (10); The driving arm is equipped with a travel switch, a limit switch and / or a rotation angle sensor for controlling the travel of the driving arm; A travel switch, a grating, a limit switch and / or a rotation angle sensor are arranged between the tower barrel part (2) and the main frame body part (1) for determining the plugging component (7) so that the expansion and retraction plug pin (15) can perform plugging; 8. A yaw device for a wind turbine generator, characterized in that: A braking component (4) and the yaw component of the wind turbine generator set according to any one of claims 1-7 are arranged between the main frame body part (1) and the tower barrel part (2); A connecting frame body (23) is arranged on the tower barrel part (2) or the main frame body part (1); When the driving arm is working, the driving force of the driving arm on the leeward side is greater than or equal to the driving force of the driving arm on the windward side; When the driving arm drives and rotates through the telescopic pin (15), there is a state B in which 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; State B is located between the starting position A and the ending position C of the driving rotation of the driving arm or state B is located at the starting position A of the driving rotation of the driving arm.

9. A yaw method for a wind turbine generator, characterized in that: When yawing is required, adjust the hub direction according to the wind direction; Step 1, the driving assembly (3) is drivingly connected to the corresponding plug-in component (7) so that the main frame body part (1) and the tower barrel part (2) achieve force transmission; Step 2, the driving arm applies force to start the tower barrel part (2) to rotate and displace from the starting position A to the ending position C; Step 3, at the ending position C, the driving assembly (3) is separated from the corresponding plug-in component (7) to disconnect the drive; Step 4, the driving arm returns to the starting position A in an idle stroke; Step 5, repeat steps 1 to 5 to achieve circumferential yaw of the main frame body part (1).

10. The yaw method of a wind turbine according to claim 9, wherein: By means of the device described in claim 8; In step 1, when the plug-in component (7) reaches the starting position A, start the radial oil cylinder part (19). When the radial oil cylinder part (19) drives the guide slide plate (14) to move the tower barrel part (2) away from the axis O, contact parts that abut against the outer side surface of the annular track (9) are arranged at both ends of the guide slide plate (14). The guide slide plate (14) is guidingly connected to the guide process sleeve (26) through the guide rod (18) against 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 is plugged into the plug-in component (7); In step 2, several driving arms apply force alternately; When each pair of driving arms uses the driving oil cylinder A (16) and the driving oil cylinder B (17), the driving oil cylinder A (16) and the driving oil cylinder B (17) respectively apply a pulling force and a pushing force to the main frame body part (1) or the driving oil cylinder A (16) and the driving arm B of the driving oil cylinder respectively apply a pushing force and a pulling force to the main frame body part (1); When rotating, monitor the pressures of each part of the rotary support part (5), and by adjusting the force application value of the driving arm, make the pressure difference of each part of the rotary support part (5) less than the set threshold value; When rotating, the driving force of the driving arm on the main frame body part (1) first increases and then decreases; In step 3, when the telescopic pin (15) is separated from the plug-in component (7), the telescopic pin (15) moves away from the axis O and is separated from the plug-in component (7), and the radial oil cylinder part (19) drives the guide slide plate (14) to move the tower barrel part (2) close to the axis O, so that the guide rod (18) is separated from the ear seat part (12) or the guide slide plate (14); In step 4, the driving arm moves in the reverse direction so that the guide slide plate (14) moves in the annular track (9).

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