Anchor plate structure for wind turbine tower base

Abstract

The present invention discloses an anchor plate structure for the base of a wind turbine tower, and relates to the technical field of wind turbine assembly. The present invention comprises: a circular plate, on which a cylinder is coaxially connected, and a plurality of slide grooves are distributed annularly on the circumference of the cylinder. The present invention adopts a double-limit design for fixing a bolt assembly. First, the double-limit design can provide additional constraints when the pre-tightening 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.

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 wind turbine tower base anchor plate 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 fixed only by bolts. This fixing method is relatively simple and has the following disadvantages during long-term use: 1. The pre-tightening force of the bolts may change during installation and use, resulting in uneven stress distribution at the connection part, 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 load and vibration 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. The bolts are easily affected by environmental factors such as corrosion and temperature changes, resulting in decreased connection performance; 4. Relying solely 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 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 simple 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:

[0006] A wind turbine tower base anchor plate structure, comprising:

[0007] A circular plate is coaxially connected to a cylinder, and a plurality of slide grooves are distributed annularly around the circumference of the cylinder, and balls are movably installed in the slide grooves;

[0008] a first driving mechanism, disposed on the cylinder, capable of driving the plurality of spheres away from each other;

[0009] 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 into each other, and the inner wall of the annular block is configured with an annular groove for accommodating a plurality of spheres;

[0010] An annular plate is constructed at the bottom end of the cylinder. A plurality of mounting grooves are distributed in an annular pattern on the outer side of the cylinder. Limiting plates are hinged in each of the mounting grooves, and the movable ends of the limiting plates are in contact with and overlap the top of the annular plate.

[0011] The second driving mechanism is arranged on the cylinder, and can drive multiple limiting plates to rotate synchronously through the second driving mechanism.

[0012] 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. The top of the annular block is connected to a support plate and is in contact with and overlaps with the driving ball.

[0013] 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.

[0014] Furthermore, the sphere is magnetically connected to the driving ball.

[0015] Furthermore, the second driving mechanism includes a sliding groove constructed in the cylinder, a column is slidably fitted in the sliding groove, and the column is linked to the driving ball through a linkage assembly. A plurality of connecting grooves are annularly distributed in the sliding groove, and are respectively connected to 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 it is in contact with and overlaps the side surface of the frustum, the end of the limit plate has an inclined section, and the end of the inclined section is constructed with an arc surface, a second inclined surface is constructed on the stop block, and it is in contact with and overlaps the arc surface, and the limit plate pin is connected to the mounting groove through a torsion spring.

[0016] 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 on it that contacts and overlaps with 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.

[0017] Furthermore, a plurality of locking members are distributed in a ring on the top of the annular plate, and correspond one-to-one to a plurality of limit plates. The locking members include arc blocks arranged symmetrically at intervals, and closed grooves are provided at opposite ends of the arc blocks. Arc-shaped interference blocks are slidably fitted in the closed grooves, and the arc-shaped interference blocks overlap with the limit plates. A receiving groove is constructed on the top of the arc block, which 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.

[0018] Furthermore, a cover plate is connected to the top of the arc-shaped block, and a filling hole connected to the accommodating groove is opened on the cover plate, and the filling hole is far away from the through hole.

[0019] Furthermore, the circular plate is provided with a first through groove that passes through the sliding groove, the frustum is provided with a second through groove, the sphere is provided with a through groove, and 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 connected in sequence from bottom to top.

[0020] Furthermore, an inserting block is constructed at the top end of the push block, and the second through-slot coaxially passes through the inserting block, and the inserting block is plug-fitted into the through-slot.

[0021] The beneficial effects of the present invention are as follows:

[0022] The present invention adopts a bolt assembly fixed with a double limit design. First, the double limit design can provide additional constraints when the pre-tightening 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

[0023] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a half-section front view of the structure of the circular plate and the cylinder in the installed state of the present invention;

[0025] Figure 3 This is a half-section front view of the structure of the circular plate of the present invention;

[0026] Figure 4 It is a schematic diagram of a half-section structure of the cylinder of the present invention;

[0027] Figure 5 It is a partial half-section front view of the structure of the circular plate and the cylinder in the installation state of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the locking member of the present invention;

[0029] Figure 7 This invention Figure 6 A magnified view of point A;

[0030] 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; 13032, push block; 1304, connecting groove ; 1305, stop 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 stop 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, insert block; 22, wind power anchor cage assembly; 2201, lower anchor plate; 2202, anchor rod; 23, guide surface. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] 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:

[0033] The circular plate 1 is coaxially connected to a cylinder 2, which is located on the top of the circular plate 1. It should be specifically explained 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 by a plurality of anchor rods 2202, and the lower anchor plate 2201 and the anchor rods 2202 are both buried in the concrete, that is, the wind turbine tower base is connected to the anchor rods 2202 protruding from the upper anchor plate and the upper anchor plate through the bolt assembly 7. In the present invention, a circular plate 1 is used as the upper anchor plate, and a plurality of chutes 3 are distributed annularly on the circumference of the cylinder 2. The chutes 3 extend from the axis of the cylinder 2 toward its outer side. A ball 4 is movably provided in the chutes 3. The chutes 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 chutes 3.

[0034] The first driving mechanism 5 is provided on the cylinder 2 and can drive the multiple balls 4 to move away from each other, that is, drive the multiple balls 4 to move synchronously toward the slot of the chute 3;

[0035] The cylinder 6, i.e. the base of the wind turbine tower, is connected to the circular plate 1 by a bolt assembly 7 in the same manner as above. Figure 1 As 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 multiple 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 multiple balls 4 can be driven by the first driving mechanism 5 to synchronously extend out of the slide 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 of 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.

[0036] An 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. 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 of the annular plate 10.

[0037] The second driving mechanism 13 is provided 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.

[0038] 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. Then, the multiple balls 4 can be driven to move synchronously by the first driving mechanism 5. 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, thereby fixing the circular plate 1 and limiting the movement of the cylinder 6. 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, thereby fixing the annular plate 10 and further limiting the movement of the cylinder 6, forming a double limit. Finally, the cylinder 6 can be connected to the circular plate 1 by the bolt assembly 7;

[0039] 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 pre-tightening 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, 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 6.

[0040] 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, and the cylindrical groove 501 extends along the axis of the cylinder 2. Multiple chutes 3 are connected to the cylindrical groove 501. A driving ball 502 is movably provided in the cylindrical groove 501 and contacts and overlaps with multiple balls 4. That is, when the driving ball 502 moves downward, its outer surface can contact with the multiple balls 4 and push the multiple balls 4 to move toward the notch of the chute 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 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 multiple balls 4 is not affected by the driving ball 502, which facilitates the insertion of the cylinder 2 into the annular block 8. The top of the annular block 8 is connected with a stop plate 504, which contacts and overlaps with the driving ball 502. When the cylinder 6 is placed, the top of the cylinder 2 can be inserted into the annular block 8. As the cylinder 6 continues to move, the stop plate 504 can contact with the top 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.

[0041] 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.

[0042] like Figure 2 and Figure 3As shown, in some embodiments, the sphere 4 is magnetically connected to the driving ball 502. The sphere 4 includes a spherical shell 401 made of stainless steel. The spherical shell 401 encloses a spherical core 402 made of a neodymium iron boron magnet. The design of the spherical shell 401 protecting the spherical core 402 makes the relatively fragile spherical core 402 less susceptible to damage. The driving ball 502 and the spherical shell 401 are made of the same material. The spherical shell 401 has a high magnetic permeability, which allows the spherical core 402 to magnetize the spherical shell 401. At this time, the spherical shell 401 can be attracted to 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 chute 3 can be retracted into the chute 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.

[0043] like Figure 2 、 Figure 3 and Figure 5 As 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, and a column 1302 is slidably fitted in the sliding groove 1301. 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 to a plurality of mounting grooves 11, the connecting grooves 1304 are lower than the mounting grooves 11, and their width is smaller than the mounting grooves 11, and a stop block 1305 is slidably installed in each of the connecting grooves 1304, and the column 13 02 is constructed with a frustum 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 surface of the frustum 1306, that is, when the column 1302 drives the frustum 1306 to slide down, the side surface of the frustum 1306 can contact with the first inclined surface 1307. As the column 1302 continues to move, the side surface of the frustum 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 resistance of the column 1302, the stop block 1305 cannot slide in the opposite direction. The end of the limit plate 12 has an inclined section 1308, and the movable end of the limit plate 12 is its end. The hinge axis of the limit plate 12 is located at its bending part, such as Figure 3 As shown, the end of the inclined section 1308 is constructed with an arc surface 1309, and the block 1305 is matched with a second inclined surface 13010, which contacts and overlaps the arc surface 1309, as shown in FIG. Figure 3 As shown, when the block 1305 slides away from the sliding groove 1301, the second inclined surface 13010 will conflict with the arc surface 1309. Figure 3As 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 toward the direction opposite to the axis of the cylinder 2. At this time, Figure 2 As shown, the movable end of the limiting 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 2 As shown, the second inclined surface 13010 is in conflict 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 slot 11 through the torsion spring 13011. The movable end of the torsion spring 13011 is connected to the pin of the limit plate 12, and the fixed end of the torsion spring 13011 is connected to the mounting slot 11. When the column 1302 slides upward, the limit of the column 1302 on the stop block 1305 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 that forces 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 slot 11.

[0044] like Figure 2 、 Figure 3 and Figure 5 As shown, in some embodiments, the linkage assembly 1303 includes a rod 13031 coaxially constructed on the column 1302, the end of the rod 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 13031. The two ends here specifically refer to the end and the end of the rod 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 13031 The sliding groove 1301 and the top of the column 1302 are connected by the tension spring 5032. The tension spring 5032 is used to provide a pulling force that forces the column 1302 to slide upward, and cooperates with the compression spring 5031. By combining the compression spring 5031 and the tension spring 5032, the characteristics of both can be fully utilized, which is convenient for providing more stable, reliable and efficient control of the movement of the driving ball 502.

[0045] 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 one to one with the plurality of limiting plates 12. The locking members 14 include arc blocks 1401 arranged symmetrically at intervals. The spacing between the two arc blocks 1401 can accommodate the limiting plates 12. During assembly, the construction personnel can paint strip patterns on the outside 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 each provided with a closed groove 1402, and the closed groove 1402 is along the arc block 140 1 extends in the longitudinal direction, and the closed groove 1402 is slidably fitted with an arc-shaped resistance block 1403, and the arc-shaped resistance block 1403 is in contact with the limit plate 12 and overlapped. The top of the arc block 1401 is constructed with a receiving groove 1404, which is located at the top of the closed groove 1402 and 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. The small steel balls 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 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 interference 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 fall out of 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.

[0046] 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 easily separated from the receiving groove 1404 under the influence of vibration force.

[0047] 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 constructed on the frustum 1306, a through-groove 19 is constructed 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, the wind turbine generator needs to lay cables first when installing. 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. Based on the present invention, there is no need to set up an additional cable threading pipe, which is more convenient.

[0048] 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.

[0049] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily 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 is not limited to the embodiments shown herein but is intended to conform 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 distributed annularly around the circumference of the cylinder (2), and a sphere (4) is movably provided in each of the slide grooves (3); A first driving mechanism (5) is provided on the cylinder (2), and the plurality of spheres (4) can be driven 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); A second driving mechanism (13) is provided on the cylinder (2), and can drive the plurality of limiting plates (12) to rotate synchronously via the second driving mechanism (13); The first driving mechanism (5) drives the multiple balls (4) to move synchronously. Parts of the multiple balls (4) extend out of the slide groove 3 and contact the inner wall of the annular groove (9), thereby fixing the circular plate (1) to limit the movement of the cylinder (6). The second driving mechanism (13) drives the multiple limit plates (12) to rotate synchronously along their respective hinge points. The multiple limit plates (12) contact the top of the annular plate (10) to fix the annular plate (10), further limiting the movement of the cylinder (6) and forming a double limit.

2. The wind turbine tower base anchor plate structure according to claim 1, characterized in that: The first driving mechanism (5) includes a cylindrical groove (501) opened at the top of the cylinder (2), and multiple sliding grooves (3) are connected to the cylindrical groove (501). A driving ball (502) is movably provided in the cylindrical groove (501) and is in contact with and overlapped with multiple balls (4). An elastic member (503) is provided in the cylinder (2) for driving the driving ball (502) to move upward. The top of the annular block (8) is connected to a support plate (504) and is in contact with and overlapped 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 notch is smaller than the outer diameter of the driving ball (502), and the inner diameter of the plurality of sliding grooves (3) at the notch is smaller than the outer diameter of the sphere (4).

4. The wind turbine tower base anchor plate structure according to claim 2, characterized in that: The sphere (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) includes a sliding groove (1301) constructed in the cylinder (2), a column (1302) is slidably fitted in the sliding groove (1301), the column (1302) is linked with the driving ball (502) through a linkage assembly (1303), a plurality of connecting grooves (1304) are annularly distributed in the sliding groove (1301), and are respectively connected to a plurality of mounting grooves (11), a stop block (1305) is slidably installed in each of the connecting grooves (1304), and the bottom end of the column (1302) is configured as a A frustum (1306) is formed, the top of the stop block (1305) is constructed with a first inclined surface (1307) and is in contact with and overlapped with the side of the frustum (1306), the end of the limit plate (12) has an inclined section (1308), and the end of the inclined section (1308) is constructed with an arcuate surface (1309), the stop block (1305) is constructed with a second inclined surface (13010) and is in contact with and overlapped with the arcuate surface (1309), and the pin shaft of the limit plate (12) is connected to the mounting groove (11) through a torsion spring (13011).

6. The wind turbine tower base anchor plate structure according to claim 5, characterized in that: The linkage assembly (1303) includes a rod (13031) coaxially constructed on the column (1302), the end of the rod (13031) movably passes through the cylindrical groove (501), and is provided with a push block (13032) that contacts and overlaps with the driving ball (502). The elastic member (503) includes a compression spring (5031) and a tension spring (5032) sleeved on both ends of the rod (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 resistance blocks (1403), and the arc-shaped resistance blocks (1403) are in contact with and overlap 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 frustum (1306) is provided with a second through groove (18), the sphere (4) is provided with a through groove (19), and 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 passes through the insert block (21), and the insert block (21) is plug-fitted with the through slot (19).

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