Yaw assembly of wind generating set

Abstract

The utility model relates to a yaw assembly of a wind generating set. The yaw assembly of the wind generating set comprises a driving assembly arranged between a main frame body part and a tower barrel part, the driving assembly is provided with one or at least two driving arms; and the driving arm independently, simultaneously or alternately and intermittently drives the driving arm to drive the main frame body part to circumferentially rotate on the tower barrel part. The driving assembly is in intermittent driving connection with the inserting part; and when the driving arm resets and returns, the force transmission state between the main frame body part and the driving arm or the force transmission state between the driving arm and the tower barrel part is in a disconnected state. The device is reasonable in design, compact in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to a yaw component of a wind power generator set, a wind wheel hub yaw device and a method. 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 the wind direction, thereby achieving the hub aligning with the wind direction.

[0003] The working principle of the conventional yaw system is as follows: if it is necessary to adjust according to the wind direction, the hub is swung by meshing a set of gear rings, such as a wind power yaw system and a method for replacing the friction plate of the yaw system in Application No. 202110959660.2, but its tooth meshing has problems such as gnawing and breaking teeth, loud noise, and the need for regular maintenance. At 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 limit of the cylinder, 360° rotation cannot be achieved, and there are also many problems such as stuck points. Moreover, a lot of useless work needs to be consumed at startup, and no proposal is made on how to reduce useless work and improve the utilization rate of useful work, and no proposal is made on how to reduce the inertial force of the yaw swing of the hub (nacelle), and no proposal or discovery 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 during yaw. The proposal of these technical problems is the creative discovery of the applicant.

[0004] In addition, how to achieve low power consumption, reduce useless work, increase useful work, reduce maintenance frequency, and achieve circular motion have become technical issues that need to be solved urgently. Utility Model Content

[0005] The technical problem to be solved by the utility model is generally to provide a yaw component of a wind turbine generator set, a wind wheel hub yaw device and a method.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is:

[0007] A yaw assembly of a wind turbine generator set, the unit includes a drive assembly arranged between a main frame body and a tower barrel;

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

[0009] The driving arms drive the main frame body to rotate circumferentially on the tower part individually, simultaneously or alternately and intermittently.

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

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

[0012] When the driving arm is reset, 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.

[0013] When the driving arm drives the main frame body to rotate, the driving arm output force change setting, the rotation angular velocity change setting of the main frame body and / or the tangential acceleration change setting of the main frame body.

[0014] The tower part is provided with a rotating support part which is rotatably arranged with the main frame body; the rotating support part has a circumferential side part, and a plurality of plug-in components are radially distributed on the circumferential side part;

[0015] 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.

[0016] 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;

[0017] The driving cylinder part is connected with a guide slide plate;

[0018] An annular track is arranged coaxially with the circumferential side portion on the outside thereof, and the guide slide is arranged in the annular track; the guide slide corresponds to the circumferential side portion;

[0019] A telescopic connection part is arranged on the ear seat part or the guide slide plate; the telescopic connection part is adaptively connected or separated with the plug-in component.

[0020] The main frame body has an outer ring flange, and a limiting annular platform is arranged on the tower part;

[0021] 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 plate;

[0022] An inlay ring A is arranged on the outer ring flange, and an inlay ring B is arranged on the limiting annular platform;

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

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

[0025] A guide hole portion is provided on the guide slide plate, and a guide rod is provided in the guide hole portion;

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

[0027] One or at least two driving cylinder parts are provided on the ear seat part;

[0028] The guide slide plate is connected to the ear seat portion through a guide rod;

[0029] A telescopic plug pin as a telescopic connection part is arranged on the ear seat part, which is used for radial plug connection or separation with the plug-in component; the plug-in component is a hole;

[0030] The telescopic latch, the driving cylinder and the guide rod are arranged in parallel;

[0031] When plug-in connection is required, the driving cylinder drives the guide slide to move the tower part away from the axis O, and the two ends of the guide slide are provided with contact parts 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. The guide slide overcomes the return spring through the guide rod and is connected with the guide process sleeve; the telescopic pin is extended and plugged with the plug-in component;

[0032] 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 driving cylinder drives the guide slide to move the tower part close to the axis O, so that the guide rod is separated from the ear seat part or the guide slide.

[0033] 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 thrust to the main frame body, or the driving cylinder A and the driving cylinder B respectively apply a thrust and a pulling force to the main frame body;

[0034] The rotating support part adopts a slewing bearing and a bearing seat matching the slewing bearing;

[0035] A pressure sensor is provided between the main frame body and the tower body, and the power parameters of the driving force of the corresponding driving arm are adjusted according to the size of the pressure sensor, and the power parameters include the size of the driving force, the control speed and / or the pressure;

[0036] The telescopic bolt can be hydraulically, electrically or mechanically driven for telescopic extension;

[0037] A bottom wear block is arranged on the front of the bottom of the guide slide plate, a side wear block is arranged on the side, and / or end wear plates are arranged on the back of both ends;

[0038] The surface of the end wear-resistant plate is set as an inclined surface or a curved surface;

[0039] 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;

[0040] 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;

[0041] A travel switch, a grating, a limit switch and / or a rotation angle sensor are arranged between the tower tube part and the main frame body part to determine the plug-in components so that the telescopic latch can be plugged in.

[0042] A wind turbine hub yaw device, wherein a brake assembly and the above-mentioned wind turbine generator set yaw assembly are arranged between a main frame body and a tower barrel;

[0043] A connecting frame is provided on the tower part or the main frame part;

[0044] 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;

[0045] When the driving arm is driven to rotate by the telescopic bolt, the center line of the telescopic bolt is perpendicular to the center line of the telescopic bolt in state B; the center line of the telescopic bolt passes through the axis O;

[0046] 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.

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

[0048] Step 1: The driving assembly is connected to the corresponding plug-in component so that the main frame body and the tower body can achieve force transmission;

[0049] Step 2: The driving arm applies force to start the tower section to rotate and move from the starting position A to the ending position C;

[0050] Step 3: At the end position C, the drive assembly is separated from the corresponding plug-in component to disconnect the drive;

[0051] Step 4: The driving arm is reset to the starting position A in idle travel;

[0052] Step 5, repeat steps 1 to 5 to achieve circumferential yaw of the main frame body.

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

[0054] With the aid of the above-mentioned equipment;

[0055] In step 1, when the plug-in component reaches the starting position A, the driving cylinder is started, and the driving cylinder drives the guide slide to move the tower part away from the axis O. Contact portions that abut against the outer side of the annular track are provided at both ends of the guide slide. The guide slide overcomes the return spring and is connected to the guide process sleeve through the guide rod, 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 be plugged with the plug-in component;

[0056] In step 2, a plurality of driving arms apply force alternately;

[0057] When each pair of driving arms adopts 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 thrust to the main frame body, or the driving cylinder A and the driving cylinder driving arm B respectively apply a thrust and a pulling force to the main frame body;

[0058] 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 made less than the set threshold by adjusting the force applied by the driving arm;

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

[0060] In step 3, 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 driving 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;

[0061] In step four, the driving arm moves in the opposite direction, so that the guide slide moves in the circular track.

[0062] The utility model has the advantages of reasonable design, low cost, firmness and durability, safety and reliability, simple operation, time-saving, labor-saving, money-saving, compact structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 It is a schematic diagram of the yaw use structure of the utility model.

[0064] Figure 2 It is a schematic diagram of the yaw explosion structure of the utility model.

[0065] Figure 3 It is a schematic diagram of the tower structure of the utility model.

[0066] Figure 4 It is a schematic diagram of the yaw principle of the utility model.

[0067] Figure 5 The utility model is a schematic diagram of the telescopic latch in use.

[0068] Figure 6 It is a structural schematic diagram of a guide slide plate of the utility model.

[0069] Figure 7 It is a structural schematic diagram of the rotary support part of the utility model.

[0070] Figure 8 It is a schematic diagram of the telescopic latch structure of the utility model.

[0071] Fig. 9 It is a schematic diagram of the structure of the ear seat portion of the utility model.

[0072] Fig.10 It is a schematic diagram of the use structure of the driving cylinder A of the utility model.

[0073] Fig.11 It is a schematic diagram of the use structure of the outer ring flange of the utility model.

[0074] Fig.12 It is a schematic diagram of an improved structure of another embodiment of the utility model.

[0075] 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 ferrule B; 11. Inlaid ferrule A; 12. Ear seat; 13. Articulated seat; 14. Guide slide; 15. Telescopic latch; 16. Drive cylinder A; 17. Drive cylinder B; 18. Guide rod; 19. Drive cylinder; 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. DETAILED DESCRIPTION

[0076] like Figure 1-12 As shown, the wind turbine yaw assembly, wind wheel hub yaw device and method of this embodiment, specifically, the wind turbine yaw assembly of this embodiment, its unit includes a drive assembly 3 arranged between the main frame body 1 and the tower body 2, so as to realize drive rotation.

[0077] The drive assembly 3 can be arranged in a plurality of pairs of circular arrays, each pair can have one or at least two drive arms, so as to achieve better traction. Preferably, it is three groups, which not only meets the traction requirement but also ensures sufficient space for installation, thereby distinguishing it from the existing gear ring drive. At the same time, compared with the electromagnetic drive, it avoids electromagnetic interference and eliminates the need for a large number of shielding devices to avoid electromagnetic interference and avoid magnetic leakage.

[0078] As a specific action protection, the driving arm drives the main frame body 1 to rotate circumferentially on the tower body 2 individually, simultaneously or alternately and intermittently. As a basic protection, at least one driving arm can be moved, and 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 possible dead points of the linear motion arms. It is preferred that driving arms in different groups and in the same direction can move simultaneously.

[0079] 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, but when an alternating manner 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.

[0080] When the driving arm is in idle travel, the force transmission state between the main frame body 1 and the driving arm or between the driving arm and the tower 2 is disconnected, because it needs to be reset for secondary drive, so separation can better perform the re-drive. The other end of the driving arm is hinged with a guide slide 14; the driving arm moves linearly.

[0081] Compared with the huge inertia force of gear drive starting and braking, the speed cannot be adjusted when it rotates. The driving arm mode of the utility model, 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 accelerate and then decelerate, so as to achieve low inertia force at starting and stopping, and high rotation speed in the middle, and avoid side wall friction and eccentric wear through radial force component, thereby reducing friction resistance.

[0082] 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 suspension method or a static pressure bearing to realize the slewing support. The rotating support part 5 has a circumferential side part 6, and a plurality of plug-in components 7 are radially distributed on the circumferential side part 6. It can be a known conventional structure such as a protrusion or a depression. In short, it can realize connection, transmit force to drive the rotating components, 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.

[0083] 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 to reset, the drive component 3 is separated from the plug-in component 7, thereby achieving better forward drive and fast reverse return without resistance.

[0084] As a specific improved embodiment, the driving assembly 3 includes a plurality of hinged seats 13 arranged on the main frame body 1, so as to realize installation support; the hinged seats 13 are hinged with driving arms; the ends of the driving arms are hinged with ear seats 12; of course, reversing the driving arms and reversing the main frame body 1 and the tower 2 according to the technology of this application also constitutes infringement. Fig.12 As an example.

[0085] The driving oil cylinder 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 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.

[0086] A telescopic connection part is provided on the ear seat part 12 or the guide slide plate 14; the telescopic connection part is adapted to be connected or separated with the plug-in component 7. The telescopic connection part is a general concept, when the plug-in component 7 is a hole, the telescopic connection part is a pin; when the plug-in component 7 is a pin, the telescopic connection part is a hole; when the plug-in component 7 is a protrusion, the telescopic connection part is a matching protrusion; when the plug-in component 7 is an armrest, the telescopic connection part is a matching armrest.

[0087] As a preference, the main frame body 1 has an outer flange 8, and a limiting annular platform 24 is provided on the tower body 2; Figure 8 The outer ring flange 8 and the limiting annular platform 24 can be arranged on the main frame body 1 or on the tower body 2.

[0088] As shown in the figure, 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 14, so that there is a movable space. Of course, other equivalent track forms can also be used, which have radial movable space to realize the guide slide 14;

[0089] Preferably, an inlaid ring A11 is provided on the outer ring flange 8, and an inlaid ring B10 is provided on the limiting annular platform 24. The inlaid rings A11 and B10 are made of wear-resistant materials and are coaxially arranged. They can limit the outward movement of the guide slide 14 and serve as a reference for the reaction force. Of course, as an equivalent, the outer ring flange 8, the inlaid ring A11 and the inlaid ring B10 can be arranged on a similar rotating support part 5 such as a slewing bearing.

[0090] 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;

[0091] 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 may also be used, and the hole opening may be chamfered to facilitate the entry and exit of the guide rod 18;

[0092] A guide hole 27 is provided on the guide slide plate 14, and a guide rod 18 is fixed in the guide hole 27 to play a guiding role;

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

[0094] There is one or at least two driving cylinders 19 on the ear seat 12 to achieve driving, preferably two, which can ensure smooth propulsion;

[0095] The guide slide 14 is connected to the ear seat 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 12 as a telescopic connection part, 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.

[0096] The telescopic latch 15, the driving cylinder 19, and the guide rod 18 are arranged in parallel, thereby achieving flexible guidance;

[0097] When plug-in connection is required, the driving cylinder part 19 drives the guide slide 14 to move the tower part 2 away from the axis O. Contact parts that abut the outer side of the annular track 9 are provided at both ends of the guide slide 14. 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 is connected to the guide process sleeve 26 through the guide rod 18; the telescopic pin 15 is extended to be plugged in with 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.

[0098] 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 driving cylinder part 19 drives the guide slide 14 to move the tower 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 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.

[0099] 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 thrust to the main frame body 1, or the driving cylinder A16 and the driving cylinder B17 respectively apply thrust and pulling force to the main frame body 1; due to the different directions, they can effectively overcome the dead points of each other, and at the same time realize the complementarity of driving force, thereby realizing better and smoother driving rotation, and the 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.

[0100] Preferably, the rotary support part 5 adopts a slewing bearing and a bearing seat matching the slewing bearing;

[0101] As an optimization, a pressure sensor is arranged 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 size of the driving force, the control speed and / or the pressure. When the pressure on one side is high, compensation is made by adjusting the driving arm on that side accordingly. This is a technical problem that has not been thought of or discovered in the prior art.

[0102] 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;

[0103] In order to improve the processability, enhance the wear resistance and facilitate replacement, a block structure is adopted, with a bottom wear-resistant block 20 provided on the front of the bottom of the guide slide 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; as an equivalent, the wear-resistant block can be replaced by a bearing.

[0104] 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;

[0105] As the definition of the action contact position, the bottom wear block 20 corresponds to the outer side wall of the circumferential side portion 6, the side wear 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 plate 22 corresponds to the inner side wall of the embedded ring A11 and / or the inner side wall of the embedded ring B10;

[0106] In order to control the action 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 stroke switch, a limit switch and / or a rotation angle sensor for controlling the stroke of the driving arm;

[0107] In order to control the rotation angle and position and facilitate the plug-in operation, a travel switch, a grating, a limit switch and / or a rotation angle sensor are arranged between the tower part 2 and the main frame body 1 to determine the plug-in component 7 so that the telescopic latch 15 can be plugged in.

[0108] As a whole machine protection, the wind turbine hub 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 barrel 2;

[0109] 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 the wind turbine head. The connecting frame 23 is not limited to the structure in the attached figure.

[0110] 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. Therefore, the utility model creatively proposes how to use wind power to turn disadvantages into advantages for auxiliary energy-saving yaw, thereby reducing wear and resistance and better realizing rotational drive.

[0111] 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 the largest and the normal force is the smallest, that is, the rotation speed is large and the radial force is the smallest, which realizes rapid rotation.

[0112] 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 prior art, thereby cleverly solving 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.

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

[0114] Step 1: The driving assembly 3 is connected to the corresponding plug-in component 7 so that the main frame body 1 and the tower body 2 can achieve force transmission;

[0115] Step 2: The driving arm applies force 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 end position C, the driving component 3 is separated from the corresponding plug-in component 7 to disconnect the driving;

[0117] Step 4: The driving arm is reset to the starting position A in idle travel;

[0118] Step 5, repeat steps 1 to 5 to achieve circumferential yaw of the main frame body 1.

[0119] In step 1, when the plug-in component 7 reaches the starting position A, the driving cylinder 19 is started, and the driving cylinder 19 drives the guide slide 14 to move the tower part 2 away from the axis O. The two ends of the guide slide 14 are provided with contact parts that abut against the outer side of the annular track 9. The guide slide 14 overcomes the return spring 25 and is connected to the guide process sleeve 26 through the guide rod 18, so that the center line of the telescopic pin 15 at the starting position A passes through the axis O; then, the telescopic pin 15 is extended to be plugged with the plug-in component 7;

[0120] In step 2, a plurality of driving arms apply force alternately;

[0121] When each pair of driving arms adopts a driving cylinder A16 and a driving cylinder B17, the driving cylinder A16 and the driving cylinder B17 respectively apply a pulling force and a thrust to the main frame body 1 or the driving cylinder A16 and the driving cylinder driving arm B17 respectively apply a thrust and a pulling force to the main frame body 1;

[0122] When rotating, the pressure of each part of the rotating support part 5 is monitored, and the pressure difference of each part of the rotating support part 5 is made smaller than the set threshold value by adjusting the force applied by the driving arm;

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

[0124] 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 driving cylinder 19 drives the guide slide 14 to move the tower part 2 closer to the axis O, so that the guide rod 18 is separated from the ear seat part 12 or the guide slide 14;

[0125] In step 4, the driving arm moves in the opposite direction, so that the guide slide 14 moves in the annular track 9 .

[0126] As the beneficial effects and technical problems solved by the utility model, the utility model is explained in combination with the embodiment. The utility model realizes the continuous rotation of the main frame body 1 and the tower barrel 2. When it starts and stops, its inertia force is small, avoiding collision, and it can realize uniform low-resistance rotation, avoiding dead points, and can realize intermittent rotation or continuous rotation. The driving component 3 can realize driving, the braking component 4 is used for braking after rotating yaw, the rotating support part 5 realizes rotation connection, the circumferential side part 6 is an annular side wall, the telescopic bolt 15 and the plug-in component 7 realize a detachable plug-in connection, the outer ring flange 8, the limiting annular platform 24; the embedded ring B10 and the embedded ring A11 form an annular track 9, which serves as the guiding function and reverse support function of the guide slide 14. The driving arm realizes the articulated driving of the driving ear seat 12, the articulated seat 13 realizes the connection, the driving cylinder A16 and the driving cylinder B17 realize one pull and one push to realize the driving multi-strategy driving rotation, and the guide rod 18 realizes the positioning guidance when plugging, and at the same time, it realizes the separation to avoid the guide connection. The driving 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 performance, reduces the contact surface, reduces the friction force, 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 plate 14 is relatively free to move in the track during the return stroke, and it realizes positioning through the guide rod 18 during work.

[0127] The present invention is fully described for a clearer disclosure, and the prior art will not be listed one by one.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein with equivalents; it is obvious for those skilled in the art to combine multiple technical solutions of the utility model. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A yaw assembly of a wind turbine generator set, characterized in that: It comprises a driving assembly (3) arranged between a main frame body (1) and a tower body (2); The driving assembly (3) has one or at least two driving arms; the driving arms drive the main frame body (1) to rotate circumferentially on the tower body (2) individually, simultaneously or alternately and intermittently; A rotating support part (5) is provided on the tower part (2) and is rotatably arranged with the main frame body part (1); The rotary support part (5) comprises a slewing bearing.

2. The yaw assembly of a wind turbine generator set according to claim 1, characterized in that: The rotating support part (5) has a circumferential side part (6), and a plurality of plug-in components (7) are radially distributed on the circumferential side part (6); the driving assembly (3) is intermittently drivingly connected to the plug-in components (7); When the driving arm is resetting, 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.

3. The yaw assembly of a wind turbine generator set according to claim 1 or 2, characterized in that: When the driving component (3) drives the main frame body (1) to rotate, the driving component (3) is connected to the plug-in component (7); when the driving component (3) returns to reset, the driving component (3) is separated from the plug-in component (7).

4. The yaw assembly of a wind turbine generator set according to claim 3, characterized in that: The driving assembly (3) comprises a plurality of hinged seats (13) arranged on the main frame body (1); the hinged seats (13) are hingedly connected to a driving arm; an ear seat (12) is hingedly connected to one end of the driving arm; a guide slide (14) is hingedly connected to the other end of the driving arm; and the driving arm performs linear motion.

5. The yaw assembly of a wind turbine generator set according to claim 4, characterized in that: An annular track (9) is arranged coaxially with the circumferential side portion (6) on the outside, and a guide slide plate (14) is arranged in the annular track (9); the guide slide plate (14) corresponds to the circumferential side portion (6); A telescopic connection portion is provided on the ear seat portion (12) or the guide slide plate (14); the telescopic connection portion is adaptively connected to or separated from the plug-in component (7).

6. The yaw assembly of a wind turbine generator set according to claim 5, characterized in that: The main frame body (1) has an outer ring flange (8), and a limiting annular platform (24) is arranged on the tower tube part (2); The two bottom sides of the annular track (9) are respectively provided with an outer ring flange (8) and a limiting annular platform (24); the guide slide plate (14) is movably arranged in the annular track (9) along the radial direction of the axis O; An inlay ring A (11) is arranged on the outer ring flange (8), and an inlay ring B (10) is arranged on the limiting annular platform (24); The annular track (9) is between the circumferential side portion (6), the outer ring flange (8), the limiting annular platform (24), the embedded ring A (11) and the embedded ring B (10); A guide hole is provided on the ear seat portion (12); a guide process sleeve (26) is provided in the guide hole. A guide rod (18) is arranged on the guide slide plate (14); The guide process sleeve (26) is matched with the guide rod (18); a driving cylinder part (19) is arranged on the ear seat part (12); The driving arm adopts a driving cylinder part (19); The guide slide plate (14) is connected to the ear seat portion (12) by means of a guide rod (18); A telescopic plug pin (15) serving as a telescopic connection portion is provided on the ear seat portion (12) and is used for radial plug-in connection or separation with the plug-in component (7); The telescopic latch (15), the driving cylinder part (19) and the guide rod (18) are arranged in parallel.

7. The yaw assembly of a wind turbine generator set according to claim 6, characterized in that: When a plug-in connection is required, the driving cylinder part (19) drives the guide slide (14) to move the tower part (2) away from the axis O, and contact parts that abut against the outer side surface of the annular track (9) are provided at both ends of the guide slide (14). The telescopic latch (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) through the guide rod (18) and is connected to the guide process sleeve (26); the telescopic latch (15) extends out and plugs into the plug-in component (7).

8. The yaw assembly of a wind turbine generator set according to claim 7, characterized in that: The driving arm includes a driving cylinder A (16) and / or a driving cylinder B (17).

9. The yaw assembly of a wind turbine generator set according to claim 8, characterized in that: When the driving cylinder A (16) and the driving cylinder B (17) are used, the driving cylinder A (16) and the driving cylinder B (17) respectively apply a pulling force and a pushing force to the main frame body (1), or the driving cylinder A (16) and the driving cylinder B (17) respectively apply a pushing force and a pulling force to the main frame body (1).

10. The yaw assembly of a wind turbine generator set according to claim 8, characterized in that: 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 driving cylinder (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).

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