Yaw correction equipment for wind turbine generator

Abstract

The utility model provides wind turbine generator yaw correction equipment which comprises a gear box, a base is installed at the bottom of the gear box, a gear ring is arranged on the lower side of the base, a ring seat is installed at the bottom of the gear ring, two symmetrically-arranged sliding seats are installed at the bottom of the base, and a transmission shaft seat is installed on the upper surface of the base. A motor is installed at the input end of the transmission shaft seat, a gear is installed at the output end of the transmission shaft seat and meshed with a gear ring, the inner side of the lower surface of the gear ring is sunken upwards to form an annular groove, and a plurality of arc-shaped plates making contact end to end are installed in the annular groove through limiting pieces. The thickness of the arc-shaped plate is the same as the depth of the annular groove, and the horizontal part of the sliding seat is in sliding contact with the bottom of the arc-shaped plate. The gear ring has the following beneficial effects that the local replacement of an easily-worn part is realized, the gear ring does not need to be integrally disassembled and assembled and replaced, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model is a yaw correction device for wind turbine units, belonging to the field of wind turbine units. Background Technology

[0002] Yaw correction for wind turbines refers to a key technology that adjusts the azimuth angle of the wind turbine nacelle to ensure it always aligns with the direction of the incoming wind, thereby maximizing wind energy capture efficiency and reducing structural load. When the motor mounted on the base is running, the meshing of gears and a gear ring drives the gearbox, which houses the generator and is connected to the blade triangular seat, to rotate reciprocally within a 360° range, achieving the yaw correction function. During this process, the sliding seat on the base, used to limit the relative position of the gear ring, continuously slides in contact with the gear ring. After long-term operation, the contact area between the two becomes thinner due to frictional wear. Because the gear ring and base are embedded, replacement requires sequentially disassembling the connecting bolts between the base and the gear ring, and separating the gear ring from the ring seat positioning structure, resulting in a long disassembly time for a single unit. Replacing the entire gear ring is costly and involves re-aligning the gearbox, further increasing maintenance complexity. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a yaw correction device for wind turbines to solve the problems mentioned in the background technology. This utility model realizes the partial replacement of easily worn parts without the need for overall disassembly and replacement of the gear ring, thus reducing maintenance costs.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a wind turbine yaw correction device, comprising a gearbox, a base mounted on the bottom of the gearbox, a gear ring on the lower side of the base, a ring seat mounted on the bottom of the gear ring, two symmetrically arranged slides mounted on the bottom of the base, the slides having an "L"-shaped cross-section, the horizontal portion of the slides positioned below the gear ring, a drive shaft seat mounted on the upper surface of the base, a motor mounted on the input end of the drive shaft seat, a gear mounted on the output end of the drive shaft seat, the gear meshing with the gear ring, an annular groove formed by an upward indentation on the inner side of the lower surface of the gear ring, and multiple arc-shaped plates in contact end-to-end mounted within the annular groove by a limiting member, the thickness of the arc-shaped plates being the same as the depth of the annular groove, the horizontal portion of the slides slidingly contacting the bottom of the arc-shaped plates.

[0005] Furthermore, the limiting component includes an inner ring, and the inner ring is provided inside the toothed ring. The outer diameter of the inner ring is the same as the inner diameter of the toothed ring. An insert block is installed at the center of one side of the arc-shaped plate. Multiple slots that cooperate with the insert block are opened in a ring at equal intervals in the annular groove. The insert block is inserted into the slot. Multiple through holes that are the same as the slots are opened in a ring at equal intervals on the inner surface of the toothed ring. A positioning hole that is aligned with the through hole is opened on one side of the insert block. A positioning pin is inserted in the channel formed by the through hole and the positioning hole. One end of the positioning pin contacts the inner wall of the inner ring. The inner ring is connected to the toothed ring through a connector.

[0006] Furthermore, the connector includes lugs, two lugs are symmetrically installed at the upper part of the toothed ring, the lugs are lower than the upper surface of the toothed ring, two notches are opened on the upper surface of the inner ring, the lugs are inserted into the notches, and two connecting lugs that cooperate with the lugs are symmetrically installed on the inner wall of the inner ring, the connecting lugs are connected to the lugs by fasteners formed by screws and nuts.

[0007] Furthermore, there is a gap between the support lug and the connecting lug, and the screw is exposed at the shank between the support lug and the connecting lug.

[0008] Furthermore, the cross-section of the insert block is rectangular, and the cross-section of the slot is rectangular.

[0009] Furthermore, a generator is installed at the output end of the gearbox, and a triangular bracket for connecting the blades is installed at the input end of the gearbox.

[0010] Furthermore, the bottom of the gearbox is equipped with multiple reinforcing ribs, which are connected and fixed to the base.

[0011] The beneficial effects of this utility model are:

[0012] 1. Multiple arc-shaped plates, connected end to end, are installed in the annular groove on the lower surface of the gear ring. The slide block only contacts and wears with the arc-shaped plates. When the thickness of the arc-shaped plate wears beyond a certain level, a single arc-shaped plate can be disassembled, reducing maintenance costs compared to the traditional method of replacing the entire gear ring.

[0013] 2. Insert the insert block on the arc plate into the slot, then insert the positioning pin into the channel formed by the positioning hole and the through hole. Then insert the inner ring into the toothed ring to restrict the positioning pin. This eliminates the need to use multiple screws to restrict the position of each arc plate, reducing the number of screws used. After connecting the support lug and the connecting lug with the screw and nut, the relative position of the inner ring and the toothed ring is restricted. Since there is a gap between the support lug and the connecting lug, when the screw and nut cannot be properly separated due to corrosion, the screw can be cut off using the space between the support lug and the connecting lug. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the structure of a wind turbine yaw correction device according to the present invention;

[0016] Figure 2 This is another perspective view of the yaw correction device for wind turbines according to this utility model;

[0017] Figure 3 This is a schematic diagram of the assembly of the arc plate, inner ring and toothed ring in a wind turbine yaw correction device of this utility model;

[0018] Figure 4 This is a schematic diagram of the assembly of the inner ring and the toothed ring in a wind turbine yaw correction device according to the present invention.

[0019] Figure 5 This is an exploded structural diagram of the arc plate, inner ring, and toothed ring in a wind turbine yaw correction device of this utility model;

[0020] In the diagram: 1-Gearbox, 2-Generator, 3-Motor, 4-Transmission shaft box, 5-Base, 6-Gear, 7-Gear ring, 8-Ring seat, 9-Triangular seat, 10-Slide, 11-Arc plate, 12-Inner ring, 13-Support lug, 14-Screw, 15-Nut, 16-Connecting lug, 17-Slot, 18-Through hole, 19-Positioning pin, 20-Annular groove, 21-Insertion block, 22-Positioning hole. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1-5This utility model provides a technical solution: a yaw correction device for a wind turbine, including a gearbox 1, a base 5 installed at the bottom of the gearbox 1, multiple reinforcing ribs installed at the bottom of the gearbox 1, the reinforcing ribs being connected and fixed to the base 5, a gear ring 7 provided on the lower side of the base 5, a ring seat 8 installed at the bottom of the gear ring 7, two symmetrically arranged slide seats 10 installed at the bottom of the base 5, the slide seats 10 having an "L" shaped cross-section, the horizontal part of the slide seats 10 being located below the gear ring 7, a transmission shaft seat 4 installed on the upper surface of the base 5, a motor 3 installed at the input end of the transmission shaft seat 4, a gear 6 installed at the output end of the transmission shaft seat 4, the gear 6 meshing with the gear ring 7, a generator 2 installed at the output end of the gearbox 1, and a triangular seat 9 for connecting the blades installed at the input end of the gearbox 1. When the motor 3 is running, through the meshing transmission of the gear 6 and the gear ring 7, the gearbox 1 equipped with the generator 2 and the triangular seat 9 is driven to reciprocate within a 360° range, thereby realizing the yaw correction function.

[0023] See Figures 3-5 The inner side of the lower surface of the toothed ring 7 is concave upward to form an annular groove 20. Multiple arc-shaped plates 11, with their ends in contact, are installed within the annular groove 20. The thickness of the arc-shaped plates 11 is the same as the depth of the annular groove 20. The horizontal part of the slide block 10 slides in contact with the bottom of the arc-shaped plates 11. Multiple arc-shaped plates 11 are installed within the annular groove 20 on the lower surface of the toothed ring 7, and the slide block 10 only contacts and wears with the arc-shaped plates 11. When the thickness of the arc-shaped plates 11 wears beyond a certain level, a single arc-shaped plate 11 can be disassembled, reducing maintenance costs compared to the traditional method of replacing the entire toothed ring 7.

[0024] See Figures 3-5The toothed ring 7 has an inner ring 12, the outer diameter of which is the same as the inner diameter of the toothed ring 7. A rectangular insert 21 is installed in the middle of one side of the arc plate 11. Multiple rectangular slots 17 are equally spaced in the annular groove 20 to mate with the insert 21. The insert 21 is inserted into the slot 17. Multiple through holes 18, identical to the slots 17, are equally spaced in the annular on the inner surface of the toothed ring 7. A positioning hole 22, aligned with the through hole 18, is opened on one side of the insert 21. A positioning pin 19 is inserted into the channel formed by the through hole 18 and the positioning hole 22. One end of the positioning pin 19 contacts the inner wall of the inner ring 12. Two lugs 13 are symmetrically installed in the upper part of the toothed ring 7. The lugs 13 are lower than the upper surface of the toothed ring 7. Two notches are opened on the upper surface of the inner ring 12. The lugs 13 are inserted into the notches. The inner wall of the inner ring 12 is symmetrically... Two connecting ears 16 are installed to mate with the support ears 13. The connecting ears 16 are connected to the support ears 13 by fasteners formed by screws 14 and nuts 15, so that the insert block 21 on the arc plate 11 is inserted into the slot 17. Then, the positioning pin 19 is inserted into the channel formed by the positioning hole 22 and the through hole 18. Subsequently, the inner ring 12 is inserted into the toothed ring 7, thereby restricting the positioning pin 19. It is not necessary to use multiple screws 14 to restrict the position of each arc plate 11, thus reducing the number of screws 14 used. After the support ears 13 and connecting ears 16 are connected by screws 14 and nuts 15, the relative position of the inner ring 12 and the toothed ring 7 is restricted. Since there is a gap between the support ears 13 and the connecting ears 16, when the screws 14 and nuts 15 cannot be properly separated due to corrosion, the screws 14 can be cut off by using the space between the support ears 13 and the connecting ears 16.

[0025] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A yaw correction device for a wind turbine, comprising a gearbox (1), characterized in that: The gearbox (1) has a base (5) installed at its bottom. A gear ring (7) is provided on the lower side of the base (5). A ring seat (8) is installed at the bottom of the gear ring (7). Two symmetrically arranged slides (10) are installed at the bottom of the base (5). The slides (10) have an "L" shaped cross-section. The horizontal part of the slides (10) is located below the gear ring (7). A drive shaft seat (4) is installed on the upper surface of the base (5). The input end of the drive shaft seat (4) is equipped with a... The motor (3) has a gear (6) installed at the output end of the transmission shaft seat (4). The gear (6) meshes with the gear ring (7). The inner side of the lower surface of the gear ring (7) is recessed upward to form an annular groove (20). Multiple arc-shaped plates (11) with their ends in contact are installed in the annular groove (20) through a limiting member. The thickness of the arc-shaped plate (11) is the same as the depth of the annular groove (20). The horizontal part of the slide block (10) slides in contact with the bottom of the arc-shaped plate (11).

2. The yaw correction device for a wind turbine generator according to claim 1, characterized in that: The limiting component includes an inner ring (12). The toothed ring (7) has an inner ring (12) inside. The outer diameter of the inner ring (12) is the same as the inner diameter of the toothed ring (7). An insert (21) is installed in the middle of one side of the arc plate (11). The annular groove (20) has multiple slots (17) that cooperate with the insert (21) in an annular and equidistant manner. The insert (21) is inserted into the slot (17). The inner surface of the toothed ring (7) has multiple through holes (18) that are the same as the slots (17) in an annular and equidistant manner. One side of the insert (21) has a positioning hole (22) that is aligned with the through hole (18). A positioning pin (19) is inserted in the channel formed by the through hole (18) and the positioning hole (22). One end of the positioning pin (19) is in contact with the inner wall of the inner ring (12). The inner ring (12) is connected to the toothed ring (7) through a connector.

3. The yaw correction device for a wind turbine generator according to claim 2, characterized in that: The connector includes lugs (13). Two lugs (13) are symmetrically installed in the upper part of the toothed ring (7). The lugs (13) are lower than the upper surface of the toothed ring (7). Two notches are opened on the upper surface of the inner ring (12). The lugs (13) are inserted into the notches. Two connecting lugs (16) that cooperate with the lugs (13) are symmetrically installed on the inner wall of the inner ring (12). The connecting lugs (16) are connected to the lugs (13) by fasteners formed by screws (14) and nuts (15).

4. The yaw correction device for a wind turbine generator according to claim 3, characterized in that: There is a gap between the support lug (13) and the connecting lug (16), and the screw (14) is exposed at the rod part between the support lug (13) and the connecting lug (16).

5. The yaw correction device for a wind turbine generator according to claim 2, characterized in that: The insert (21) has a rectangular cross-section, and the slot (17) has a rectangular cross-section.

6. The yaw correction device for a wind turbine generator according to claim 1, characterized in that: A generator (2) is installed at the output end of the gearbox (1), and a triangular seat (9) for connecting blades is installed at the input end of the gearbox (1).

7. The yaw correction device for a wind turbine generator according to claim 1, characterized in that: The bottom of the gearbox (1) is equipped with multiple reinforcing ribs, which are connected and fixed to the base (5).

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