Tower drum base anchor plate structure of wind driven generator

Abstract

The invention discloses an anchor plate structure of a tower base of a wind driven generator, and relates to the technical field of wind driven generator assembly. The device comprises a circular plate, a cylinder is coaxially connected to the circular plate, and a plurality of sliding grooves are annularly distributed in the circumferential side of the cylinder. By adopting the design that the bolt assembly is fixedly matched with dual limiting, firstly, the dual limiting design can provide additional constraint, reduce stress concentration and ensure the connection stability when the pretightening force of the bolt assembly changes, and secondly, the dual limiting design can effectively disperse dynamic loads, reduce stress of the bolt assembly and improve the reliability of the bolt assembly. According to the bolt assembly, the connecting failure risk caused by vibration or impact can be reduced, then, through the double-limiting design, additional protection can be provided when the bolt assembly is affected by environmental factors, the service life of the connecting part can be prolonged, finally, the integrity of the structure can be enhanced through the double-limiting design, local deformation and displacement are reduced, and the service life of the bolt assembly is prolonged. And the overall stability and safety of the barrel body can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine assembly, and in particular to an anchor plate structure for a wind turbine tower base. Background Art

[0002] The anchor plate at the base of the wind turbine tower is an important component in the foundation structure of a wind turbine generator set. It bears the huge weight of the entire wind turbine tower and all the components above it, and transmits the huge lateral force and torque generated by the wind to the foundation, ensuring that the wind turbine remains stable under various harsh environmental conditions.

[0003] In the prior art, the wind turbine tower base and the anchor plate are only fixed by bolts. This fixing method is relatively simple and has the following disadvantages during long-term use: 1. The preload force of the bolts may change during installation and use, resulting in uneven stress distribution at the connection site, which in turn causes local stress concentration and increases the risk of bolt breakage or loosening; 2. The wind turbine will be affected by dynamic loads such as wind loads and vibrations during operation. These loads may cause loosening or fatigue damage of the bolt connection, especially under extreme weather conditions; 3. Wind turbines are usually installed in harsh environments, such as at sea or at high altitudes. Bolts are easily affected by environmental factors such as corrosion and temperature changes, resulting in decreased connection performance; 4. Relying only on bolt fixation, the connection between the wind turbine tower base and the anchor plate lacks integrity, which may cause local deformation or displacement, affecting the overall stability of the wind turbine; In order to reasonably improve the above-mentioned problems, the present invention proposes an anchor plate structure for the tower base of a wind turbine. Summary of the invention

[0004] The purpose of the present invention is to solve a series of technical problems caused by the relatively single fixing method of the existing wind turbine tower base and anchor plate, and the present invention provides a wind turbine tower base anchor plate structure.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A wind turbine tower base anchor plate structure, comprising: A circular plate is coaxially connected to a cylinder, and a plurality of slide grooves are distributed annularly around the cylinder, and balls are movably arranged in the slide grooves; A first driving mechanism is disposed on the cylinder, and the plurality of balls can be driven to move away from each other by the first driving mechanism; The cylinder is connected to the circular plate through a bolt assembly, the inner wall of the cylinder is connected to an annular block, the cylinder and the annular block are plugged together, and the inner wall of the annular block is configured with an annular groove for accommodating a plurality of spheres; The annular plate is constructed at the bottom end of the cylinder. A plurality of mounting grooves are distributed in an annular manner on the outer side of the cylinder. The mounting grooves are all hinged with limit plates, and the movable ends of the limit plates are all in contact with and overlapped with the top of the annular plate. The second driving mechanism is arranged on the cylinder, and the plurality of limiting plates can be driven to rotate synchronously through the second driving mechanism.

[0006] Furthermore, the first driving mechanism includes a cylindrical groove opened at the top of the cylinder, and multiple sliding grooves are connected to the cylindrical groove. A driving ball is movably arranged in the cylindrical groove and is in contact with and overlaps with multiple balls. An elastic member is provided in the cylinder to drive the driving ball to move upward. A resistance plate is connected to the top of the annular block and is in contact with and overlaps with the driving ball.

[0007] Furthermore, the inner diameter of the cylindrical groove at the notch is smaller than the outer diameter of the driving ball, and the inner diameters of the plurality of sliding grooves at the notch are smaller than the outer diameter of the ball.

[0008] Furthermore, the spherical body is magnetically connected to the driving ball.

[0009] Furthermore, the second driving mechanism includes a sliding groove constructed in a cylinder, a cylinder is slidably fitted in the sliding groove, and the cylinder is linked with the driving ball through a linkage assembly. A plurality of connecting grooves are annularly distributed in the sliding groove, and are respectively connected with a plurality of mounting grooves. A stop block is slidably installed in each of the connecting grooves. A frustum is constructed at the bottom end of the cylinder, a first inclined surface is constructed at the top end of the stop block, and is in contact and overlap with the side surface of the frustum, the end of the limit plate has an inclined section, and an arc-shaped surface is constructed at the end of the inclined section, a second inclined surface is constructed on the stop block, and is in contact and overlap with the arc-shaped surface, and the limit plate pin is connected to the mounting groove through a torsion spring.

[0010] Furthermore, the linkage assembly includes a rod body coaxially constructed on the column, the end of the rod body movably passes through the cylindrical groove, and a push block is constructed thereon that contacts and overlaps the driving ball. The elastic part includes a compression spring and a tension spring sleeved on both ends of the rod body, the compression spring contacts the bottom side of the push block, and the sliding groove is connected to the top of the column through the tension spring.

[0011] Furthermore, a plurality of locking members are distributed in a ring on the top of the annular plate and correspond one to one with the plurality of limit plates. The locking members include arc blocks that are symmetrically arranged at intervals, and closed grooves are provided at opposite ends of the arc blocks. Arc-shaped resistance blocks are slidably fitted in the closed grooves, and the arc-shaped resistance blocks overlap and resist the limit plates. A receiving groove is constructed on the top of the arc block and is filled with small steel balls. A through hole is provided on the receiving groove and is connected to the sealing end of the closed groove.

[0012] Furthermore, a cover plate is connected to the top of the arc block, and a filling hole connected to the accommodating groove is formed on the cover plate, and the filling hole is far away from the through hole.

[0013] Furthermore, the circular plate is provided with a first through groove that penetrates the sliding groove, the frustum is configured with a second through groove, the sphere is configured with a through groove, the abutment plate is provided with a through hole, and the first through groove, the second through groove, the through groove and the through hole are sequentially connected from bottom to top.

[0014] Furthermore, an insert block is constructed at the top end of the push block, the second through slot coaxially penetrates the insert block, and the insert block is plug-fitted with the through slot.

[0015] The beneficial effects of the present invention are as follows: The present invention adopts a design of fixing the bolt assembly with a double limit. First, the double limit design can provide additional constraints when the preload force of the bolt assembly changes, reduce stress concentration, and ensure the stability of the connection. Secondly, the double limit design can effectively disperse dynamic loads, reduce the force on the bolt assembly, and reduce the risk of connection failure due to vibration or impact. Subsequently, the double limit design can provide additional protection when the bolt assembly is affected by environmental factors, and extend the service life of the connection part. Finally, the double limit design can enhance the integrity of the structure, reduce local deformation and displacement, and improve the overall stability and safety of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the present invention; Figure 2 It is a half-section front view of the structure of the circular plate and the cylinder in the installation state of the present invention; Figure 3 is a half-section front view of the structure of the circular plate of the present invention; Figure 4 It is a schematic diagram of a half-section structure of the cylinder of the present invention; Figure 5 It is a partial structural half-section front view of the installation state of the circular plate and the cylinder of the present invention; Figure 6 It is a structural schematic diagram of the locking member of the present invention; Figure 7 The present invention Figure 6 A magnified image of point A; Figure numerals: 1, circular plate; 2, cylinder; 3, slide groove; 4, sphere; 401, ball shell; 402, ball core; 5, first driving mechanism; 501, cylindrical groove; 502, driving ball; 503, elastic member; 5031, compression spring; 5032, tension spring; 504, abutment plate; 6, cylinder; 7, bolt assembly; 8, annular block; 9, annular groove; 10, annular plate; 11, mounting groove; 12, limit plate; 13, second driving mechanism; 1301, slide groove; 1302, cylinder; 1303, linkage assembly; 13031, rod body; 13032, push block; 1304, connecting groove ; 1305, abutment block; 1306, frustum; 1307, first inclined surface; 1308, inclined section; 1309, arc surface; 13010, second inclined surface; 13011, torsion spring; 14, locking piece; 1401, arc block; 1402, closed groove; 1403, arc-shaped abutment block; 1404, accommodating groove; 1405, through hole; 15, cover plate; 16, filling hole; 17, first through groove; 18, second through groove; 19, through groove; 20, through hole; 21, plug block; 22, wind power anchor cage assembly; 2201, lower anchor plate; 2202, anchor rod; 23, guide surface. DETAILED DESCRIPTION

[0017] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] like Figure 1-Figure 7 As shown, an embodiment of the present invention provides an anchor plate structure for a wind turbine tower base, comprising: The circular plate 1 is coaxially connected with a cylinder 2, and the cylinder 2 is located on the top of the circular plate 1. It should be specifically noted that in the prior art, the wind power anchor cage assembly 22 is as follows: Figure 1 As shown, the lower anchor plate 2201 is connected to the upper anchor plate through a plurality of anchor rods 2202, and the lower anchor plate 2201 and the anchor rods 2202 are both buried in concrete, that is, the wind power tower base is connected to the anchor rods 2202 protruding from the upper anchor plate and the upper anchor plate through a bolt assembly 7, and in the present invention, a circular plate 1 is used as the upper anchor plate, and a plurality of slide grooves 3 are annularly distributed on the circumference of the cylinder 2, and the slide grooves 3 extend from the axis of the cylinder 2 toward the outside thereof, and a ball 4 is movably arranged in the slide grooves 3, and the slide grooves 3 are cylindrical, and their inner walls are in contact with the outer side of the ball 4, that is, the ball 4 can roll in the slide grooves 3; A first driving mechanism 5 is provided on the cylinder 2, and the plurality of balls 4 can be driven to move away from each other through the first driving mechanism 5, that is, the plurality of balls 4 can be driven to move synchronously toward the slot of the slide groove 3; The cylinder 6, i.e. the wind power tower base, is connected to the circular plate 1 by a bolt assembly 7 in the same manner as above. Figure 1As shown, the inner wall of the cylinder 6 is connected with an annular block 8, which is located in the middle of the cylinder 6. The annular block 8 and the cylinder 6 are on the same axis. The cylinder 2 is plugged into the annular block 8. The top of the cylinder 2 is configured with a guide surface 23 to facilitate its insertion into the inner side of the annular block 8. The inner wall of the annular block 8 is configured with an annular groove 9 for accommodating a plurality of balls 4. The inner wall of the annular groove 9 can fit with the outer side of the ball 4. When the cylinder 6 is placed on the circular plate 1, the first driving mechanism 5 can be used to drive the plurality of balls 4 to synchronously extend out of the slide groove 3 and contact with the inner wall of the annular groove 9. At this time, the middle part of the cylinder 6 can be fixed by the mutual cooperation between the cylinder 2 and the ball 4, which can limit the movement of the cylinder 6 under the action of external force and form a one-time limit. The annular plate 10 is constructed at the bottom end of the cylinder 6. The annular plate 10 is located below the annular block 8. A plurality of mounting grooves 11 are distributed in an annular pattern on the outer side of the cylinder 2. The mounting grooves 11 are located below the slide grooves 3. The mounting grooves 11 are hinged with limit plates 12. The movable ends of the limit plates 12 are in contact with and overlap the top of the annular plate 10. The second driving mechanism 13 is arranged on the cylinder 2. The plurality of limit plates 12 can be driven to rotate synchronously by the second driving mechanism 13. When the limit plates 12 rotate in a direction away from the mounting groove 11, the limit plates 12 will contact the top of the annular plate 10 and exert downward pressure, thereby fixing the bottom of the cylinder 6 and limiting the movement of the cylinder 6 under the action of external force, thereby forming a secondary limit. During installation, the cylinder 6 can be first placed on the circular plate 1, at this time, the cylinder 2 can be inserted into the ring of the annular block 8, and then the first driving mechanism 5 can be used to drive the multiple balls 4 to move synchronously. At this time, a part of the multiple balls 4 extends out of the slide groove 3 and contacts the inner wall of the annular groove 9, so that the circular plate 1 can be fixed and the movement of the cylinder 6 can be limited. Then, the multiple limit plates 12 can be driven by the second driving mechanism 13 to rotate synchronously along their respective hinge points. At this time, the multiple limit plates 12 contact the top of the annular plate 10, so that the annular plate 10 can be fixed, and the movement of the cylinder 6 can be further limited, and a double limit is formed. Finally, the cylinder 6 can be connected to the circular plate 1 by the bolt assembly 7; The present invention adopts a double limit design for fixing the bolt assembly 7. First, the double limit design can provide additional constraints when the preload force of the bolt assembly 7 changes, reduce stress concentration, and ensure the stability of the connection. Secondly, the double limit design can effectively disperse dynamic loads, reduce the force on the bolt assembly 7, and reduce the risk of connection failure due to vibration or impact. Subsequently, the double limit design can provide additional protection when the bolt assembly 7 is affected by environmental factors, thereby extending the service life of the connection part. Finally, the double limit design can enhance the integrity of the structure, reduce local deformation and displacement, and improve the overall stability and safety of the cylinder 6.

[0019] like Figure 2-Figure 4 As shown, in some embodiments, the first driving mechanism 5 includes a cylindrical groove 501 opened at the top of the cylinder 2, the cylindrical groove 501 extends along the axis direction of the cylinder 2, and the multiple slide grooves 3 are connected to the cylindrical groove 501. A driving ball 502 is movably arranged in the cylindrical groove 501, and is in contact with and overlapped with the multiple balls 4. That is, when the driving ball 502 moves downward, its outer side surface can contact with the multiple balls 4 and push the multiple balls 4 to move toward the notch of the slide groove 3. An elastic member 503 is provided in the cylinder 2 to drive the driving ball 502 to move upward. The design is such that, during installation, the top end of the driving ball 502 extends out of the notch of the cylindrical groove 501 under the action of the elastic member 503, so that the movement of the plurality of spheres 4 is not affected by the driving ball 502, and it is convenient for the cylinder 2 to be inserted into the annular block 8. The top end of the annular block 8 is connected with a butt plate 504, which butts and overlaps with the driving ball 502. When the cylinder 6 is placed, the top end of the cylinder 2 can be inserted into the annular block 8. As the cylinder 6 continues to move, the butt plate 504 can butt against the top end of the driving ball 502. Under the action of the gravity of the cylinder 6, the driving ball 502 can be pressed into the cylindrical groove 501.

[0020] like Figure 2 and Figure 3 As shown, in some embodiments, the inner diameter of the cylindrical groove 501 at the groove opening is smaller than the outer diameter of the driving ball 502, and the inner diameter of the groove openings of multiple slide grooves 3 is smaller than the outer diameter of the sphere 4. This design ensures that the driving ball 502 and the sphere 4 will not detach from the cylindrical groove 501 and the slide groove 3 while extending out of the cylindrical groove 501 and the slide groove 3.

[0021] like Figure 2 and Figure 3 As shown, in some embodiments, the ball 4 is magnetically connected to the driving ball 502. The ball 4 includes a ball shell 401 made of stainless steel. The ball shell 401 wraps a ball core 402 made of a neodymium iron boron magnet. The design of the ball shell 401 protecting the ball core 402 makes the relatively fragile ball core 402 not easily damaged. The driving ball 502 and the ball shell 401 are made of the same material. The ball shell 401 has a high magnetic permeability, which allows the ball core 402 to magnetize the ball shell 401. At this time, the ball shell 401 can be absorbed on the driving ball 502. When the driving ball 502 moves upward under the action of the elastic member 503, as shown in FIG. Figure 3 As shown, the ball 4 in the slide groove 3 can be retracted into the slide groove 3 under the attraction of the driving ball 502, so that when the cylinder 2 is inserted into the annular block 8, the ball 4 will not collide with the annular block 8.

[0022] like Figure 2 , Figure 3 and Figure 5As shown, in some embodiments, the second driving mechanism 13 includes a sliding groove 1301 constructed in the cylinder 2, the sliding groove 1301 is coaxially arranged below the cylindrical groove 501, a column 1302 is slidably matched in the sliding groove 1301, and the column 1302 is linked with the driving ball 502 through a linkage component 1303, that is, when the driving ball 502 moves downward, the column 1302 can slide down under the action of the linkage component 1303, and a plurality of connecting grooves 1304 are annularly distributed in the sliding groove 1301, and are respectively connected with a plurality of mounting grooves 11, the connecting grooves 1304 are lower than the mounting grooves 11, and their widths are smaller than the mounting grooves 11, and abutments 1305 are slidably installed in the connecting grooves 1304, and the column 13 02 has a truncated cone 1306 at the bottom end, and a first inclined surface 1307 is constructed at the top end of the stop block 1305, which is in contact with and overlaps the side of the truncated cone 1306, that is, when the column 1302 drives the truncated cone 1306 to slide down, the side of the truncated cone 1306 can contact with the first inclined surface 1307, and as the column 1302 continues to move, the side of the truncated cone 1306 can slide on the first inclined surface 1307 and force the stop block 1305 to slide in the direction away from the sliding groove 1301. At this time, under the contact of the column 1302, the stop block 1305 cannot slide in the opposite direction. The end of the limiting plate 12 has an inclined section 1308, and the movable end of the limiting plate 12 is its end. The hinge axis of the limiting plate 12 is located at its bending part, such as Figure 3 As shown, the end of the inclined section 1308 is configured with an arc surface 1309, and the stop block 1305 is configured with a second inclined surface 13010, which contacts and overlaps the arc surface 1309, as shown in FIG. Figure 3 As shown, when the stopper 1305 slides in a direction away from the sliding groove 1301, the second inclined surface 13010 will contact the arc surface 1309. Figure 3 As shown, there is an acute angle between the second inclined surface 13010 and the inclined section 1308, and the arc surface 1309 can slide along the length direction of the second inclined surface 13010, and force the inclined section 1308 to drive the limiting plate 12 to flip in the direction away from the axis of the cylinder 2. At this time, Figure 2 As shown, the movable end of the limit plate 12 can be placed on the top of the annular plate 10, so that the movement of the cylinder 6 can be limited by the annular plate 10. Figure 2As shown, the second inclined surface 13010 is in contact with the outer side of the inclined section 1308. Under the action of the stop block 1305, the limit plate 12 cannot rotate. The pin of the limit plate 12 is connected to the mounting groove 11 through the torsion spring 13011. The movable end of the torsion spring 13011 is connected to the pin of the limit plate 12. The fixed end of the torsion spring 13011 is connected to the mounting groove 11. When the column 1302 slides upward, the limit of the stop block 1305 by the column 1302 can be released. Under the action of the torsion spring 13011, the limit plate 12 can be forced to flip toward the axis of the cylinder 2. At this time, the limit plate 12 can provide a thrust to force the stop block 1305 to slide toward the axis of the cylinder 2, so that the limit plate 12 can be reset synchronously with the stop block 1305, and the limit plate 12 can be received by the mounting groove 11.

[0023] like Figure 2 , Figure 3 and Figure 5 As shown, in some embodiments, the linkage assembly 1303 includes a rod body 13031 coaxially constructed on the column 1302, the end of the rod body 13031 movably passes through the cylindrical groove 501, and is constructed with a push block 13032 that contacts and overlaps with the driving ball 502, and the elastic member 503 includes a compression spring 5031 and a tension spring 5032 sleeved on both ends of the rod body 13031, where the two ends specifically refer to the end and the end of the rod body 13031, wherein the end is connected to the column 1302, and the compression spring 5031 contacts the bottom side of the push block 13032. Under normal circumstances, the compression spring 5031 can drive the push block 13032 to drive the rod body 13031 The rod 13031 can be used to slide up with the column 1302 and push the driving ball 502 to move up. When the driving ball 502 moves down, the push block 13032 can be forced to slide down and compress the compression spring 5031. At this time, the column 1302 can be driven to slide down through the rod body 13031. The sliding groove 1301 is connected to the top of the column 1302 through the tension spring 5032. The tension spring 5032 is used to provide a pulling force that forces the column 1302 to slide upward. The tension spring 5032 cooperates with the compression spring 5031. Through the combined use of the compression spring 5031 and the tension spring 5032, the characteristics of both can be fully utilized, so as to provide more stable, reliable and efficient control of the movement of the driving ball 502.

[0024] like Figure 2 , Figure 6 and Figure 7As shown, in some embodiments, a plurality of locking members 14 are distributed in an annular manner on the top of the annular plate 10, and correspond to the plurality of limiting plates 12 one by one. The locking members 14 include arc blocks 1401 arranged in an interval and symmetrical manner. The distance between the two arc blocks 1401 can accommodate the limiting plates 12. During assembly, the construction personnel can apply stripe patterns on the outer sides of the cylinder 6 and the circular plate 1 to facilitate the alignment of the limiting plates 12 and the arc blocks 1401. The opposite ends of the arc blocks 1401 are provided with closed grooves 1402, and the closed grooves 1402 are arranged along the arc blocks 140 1 extends in the length direction, and the closed groove 1402 is slidably matched with an arc-shaped resistance block 1403, and the arc-shaped resistance block 1403 is in contact with the limiting plate 12, and the top of the arc block 1401 is structured with a receiving groove 1404, which is located at the top of the closed groove 1402 and filled with small steel balls. The receiving groove 1404 is provided with a through hole 1405, which is connected with the blocking end of the closed groove 1402, and the small steel ball can enter the closed groove 1402 through the through hole 1405, and the arc-shaped resistance block 1403 is completely inserted into the closed groove. 1402, the through hole 1405 is blocked by the arc-shaped resistance block 1403. In actual use, the cylinder 6 will vibrate under the influence of external force. The arc-shaped resistance block 1403 in the arc-shaped block 1401 will be displaced under the action of the vibration force, that is, it moves from the closed end groove of the closed groove 1402 to its open end. At this time, the through hole 1405 leaks out, and the small steel ball in the accommodating groove 1404 can gradually enter the closed groove 1402 from the through hole 1405 and limit the reverse movement of the arc-shaped resistance block 1403. When the arcs on both sides of the limiting plate 12 When the shaped resistance block 1403 is extended, the limit plate 12 can be locked. At this time, under the action of the locking piece 14, the cylinder 6 and the circular plate 1 cannot be separated, and the sphere 4 will not leave the annular groove 9, which can effectively reduce the vibration and shaking of the cylinder 6 and improve the stability of the cylinder 6. It should be specifically explained that the upper anchor plate, that is, the circular plate 1 of the present invention, cannot be moved. If it is necessary to disassemble the circular plate 1 and the cylinder 6, it is often because the cylinder 6 is damaged and needs to be replaced. At this time, the cylinder 6 can be cut and destroyed before being disassembled.

[0025] like Figure 2 , Figure 6 and Figure 7 As shown, in some embodiments, a cover plate 15 is connected to the top of the arc block 1401, and a filling hole 16 connected to the receiving groove 1404 is opened on the cover plate 15. Small steel balls can be filled into the receiving groove 1404 through the filling hole 16, and the filling hole 16 is far away from the through hole 1405. Under the action of the cover plate 15, the small steel balls in the receiving groove 1404 are not easy to escape from the receiving groove 1404 under the influence of vibration force.

[0026] like Figure 2 and Figure 5As shown, in some embodiments, a first through groove 17 penetrating the sliding groove 1301 is provided on the circular plate 1, a second through groove 18 is configured on the frustum 1306, a through groove 19 is configured on the sphere 4, and a through hole 20 is provided on the abutment plate 504. The first through groove 17, the second through groove 18, the through groove 19 and the through hole 20 are sequentially connected from bottom to top. In the prior art, cables need to be laid first when installing a wind turbine. In the present invention, the buried cables can pass through the first through groove 17, the second through groove 18, the through groove 19 and the through hole 20 from bottom to top in sequence and enter the sleeve. On the basis of the present invention, there is no need to set up an additional cable threading tube, which is more convenient.

[0027] like Figure 2 and Figure 5 As shown, in some embodiments, an insert block 21 is constructed at the top of the push block 13032, and the second through groove 18 coaxially penetrates the insert block 21. The insert block 21 is plugged into and matched with the through groove 19. Through the mutual cooperation between the insert block 21 and the through groove 19, the movement direction of the driving ball 502 in the cylindrical groove 501 can be limited so that it can only slide in the cylindrical groove 501, so that the notch of the through groove 19 is not easily worn by the cable.

[0028] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wind turbine tower base anchor plate structure, characterized in that: include: A circular plate (1) is coaxially connected to a cylinder (2), a plurality of slide grooves (3) are annularly distributed on the circumference of the cylinder (2), and a sphere (4) is movably arranged in each of the slide grooves (3); A first driving mechanism (5) is disposed on the cylinder (2), and the plurality of balls (4) can be driven to move away from each other by the first driving mechanism (5); The cylinder (6) is connected to the circular plate (1) via a bolt assembly (7); the inner wall of the cylinder (6) is connected to an annular block (8); the cylinder (2) and the annular block (8) are plug-fitted together; the inner wall of the annular block (8) is configured with an annular groove (9) for accommodating a plurality of spheres (4); An annular plate (10) is constructed at the bottom end of the cylinder (6), and a plurality of mounting grooves (11) are distributed in an annular manner on the outer side of the cylinder (2). Limiting plates (12) are hingedly connected in the mounting grooves (11), and the movable ends of the limiting plates (12) are in contact with and overlap the top end of the annular plate (10); The second driving mechanism (13) is arranged on the cylinder (2), and the plurality of limit plates (12) can be driven to rotate synchronously via the second driving mechanism (13).

2. The anchor plate structure of the wind turbine tower base according to claim 1, characterized in that: The first driving mechanism (5) comprises a cylindrical groove (501) formed at the top of the cylinder (2), the plurality of slide grooves (3) being connected to the cylindrical groove (501), a driving ball (502) being movably arranged in the cylindrical groove (501) and being in contact and overlap with the plurality of spheres (4), an elastic member (503) being provided in the cylinder (2) for driving the driving ball (502) to move upward, and a resisting plate (504) being connected to the top of the annular block (8) and being in contact and overlap with the driving ball (502).

3. The wind turbine tower base anchor plate structure according to claim 2, characterized in that: The inner diameter of the cylindrical groove (501) at the groove opening is smaller than the outer diameter of the driving ball (502), and the inner diameter of the plurality of sliding grooves (3) at the groove opening is smaller than the outer diameter of the sphere (4).

4. The anchor plate structure of the wind turbine tower base according to claim 2, characterized in that: The spherical body (4) is magnetically connected to the driving ball (502).

5. The wind turbine tower base anchor plate structure according to claim 2, characterized in that: The second driving mechanism (13) comprises a sliding groove (1301) constructed in the cylinder (2), a column (1302) slidably fitted in the sliding groove (1301), the column (1302) being linked with the driving ball (502) via a linkage assembly (1303), a plurality of connecting grooves (1304) distributed in an annular pattern in the sliding groove (1301) and respectively connected to a plurality of mounting grooves (11), a stop block (1305) being slidably mounted in each of the connecting grooves (1304), and a bottom end of the column (1302) being configured A truncated cone (1306) is formed, the top of the stop block (1305) is configured with a first inclined surface (1307) which is in contact with and overlaps the side of the truncated cone (1306), the end of the limit plate (12) has an inclined section (1308), and the end of the inclined section (1308) is configured with an arc surface (1309), the stop block (1305) is configured with a second inclined surface (13010) which is in contact with and overlaps the arc surface (1309), and the pin shaft of the limit plate (12) is connected to the mounting groove (11) via a torsion spring (13011).

6. The anchor plate structure of the wind turbine tower base according to claim 5, characterized in that: The linkage assembly (1303) comprises a rod body (13031) coaxially constructed on the column (1302); the end of the rod body (13031) movably passes through the cylindrical groove (501), and a push block (13032) is constructed on the rod body that contacts and overlaps with the driving ball (502); the elastic member (503) comprises a compression spring (5031) and a tension spring (5032) sleeved on both ends of the rod body (13031); the compression spring (5031) contacts the bottom side of the push block (13032), and the sliding groove (1301) is connected to the top of the column (1302) via the tension spring (5032).

7. The wind turbine tower base anchor plate structure according to claim 6, characterized in that: A plurality of locking members (14) are distributed in an annular shape on the top of the annular plate (10), and correspond one to one with the plurality of limiting plates (12). The locking members (14) include arc blocks (1401) arranged in an interval and symmetrical shape. The opposite ends of the arc blocks (1401) are provided with closed grooves (1402). The closed grooves (1402) are slidably fitted with arc-shaped abutting blocks (1403), and the arc-shaped abutting blocks (1403) overlap with the limiting plates (12). The top of the arc block (1401) is structured with a receiving groove (1404), which is filled with small steel balls. The receiving groove (1404) is provided with a through hole (1405) and is connected to the blocked end of the closed groove (1402).

8. The wind turbine tower base anchor plate structure according to claim 7, characterized in that: The top of the arc-shaped block (1401) is connected to a cover plate (15), and a filling hole (16) connected to the accommodating groove (1404) is provided on the cover plate (15), and the filling hole (16) is far away from the through hole (1405).

9. The wind turbine tower base anchor plate structure according to claim 6, characterized in that: The circular plate (1) is provided with a first through groove (17) penetrating the sliding groove (1301), the truncated cone (1306) is provided with a second through groove (18), the sphere (4) is provided with a through groove (19), the abutment plate (504) is provided with a through hole (20), and the first through groove (17), the second through groove (18), the through groove (19) and the through hole (20) are sequentially connected from bottom to top.

10. The wind turbine tower base anchor plate structure according to claim 9, characterized in that: The top end of the push block (13032) is provided with an insert block (21), the second through slot (18) coaxially penetrates the insert block (21), and the insert block (21) is plug-fitted with the through slot (19).

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