Wind power tower hoisting mechanism

Abstract

The application discloses a wind power tower hoisting mechanism and relates to the hoisting technical field, which has the advantages of facilitating hoisting of a foundation ring, and the technical scheme is as follows: a bottom disc located in the foundation ring and a stand column coaxially arranged at the top end of the bottom disc are included; a swivel ring is coaxially arranged at the top end of the bottom disc; four first circular grooves are formed in the outer wall of the swivel ring and are uniformly distributed along the circumference of the swivel ring; four insertion columns are horizontally inserted into the four first circular grooves, and the four insertion columns correspond to the round holes on the foundation ring; a pushing piece for simultaneously pushing the four insertion columns to move horizontally away from the stand column is arranged on the stand column; and an ear is arranged at the top end of the stand column.

Description

Technical Field

[0001] This invention relates to the field of hoisting technology, specifically to a wind turbine tower hoisting mechanism. Background Technology

[0002] Wind power generation is the most practical renewable energy source among new energy sources. The wind turbine tower foundation ring, as the transition part connecting the equipment foundation and the equipment, is one of the main components of wind power generation equipment. As the foundation load-bearing part of the tower, the foundation ring needs to be installed with the help of a hoisting mechanism.

[0003] like Figure 8 The cylindrical wall of the foundation ring 1 has several circular holes 7, which are evenly distributed along the circumference of the foundation ring 1. The circular holes 7 are used for the radial placement of the perforated steel bars.

[0004] In existing methods of hoisting foundation rings, steel wire binding is mostly used. This method requires manual labor to securely bind the steel wire to the foundation ring before hoisting, which is inconvenient. Therefore, the applicant has developed a new technical solution to solve the above-mentioned technical problems during actual production. Summary of the Invention

[0005] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a wind turbine tower hoisting mechanism that facilitates the hoisting of foundation rings.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This invention provides a wind turbine tower hoisting mechanism, including a chassis located within a foundation ring and a column coaxially mounted on the top of the chassis. A rotating ring is coaxially mounted on the top of the chassis, and four first circular grooves are formed on the outer wall of the rotating ring. The four first circular grooves are evenly distributed along the circumference of the rotating ring. Inserted columns are horizontally inserted into each of the four first circular grooves, and the four inserted columns correspond to the circular holes on the foundation ring. The column is provided with a pushing member for simultaneously pushing the four inserted columns to move horizontally away from the column. The top of the column is provided with a lifting lug.

[0008] By adopting the above technical solution, when in use, the lifting lugs are connected to the wire locks of the lifting equipment, the chassis and column are then lifted into the foundation ring, the four inserts are aligned with four of the round holes on the foundation ring, and the four inserts are simultaneously pushed horizontally away from the column by the pusher until one end of the four inserts is inserted into the round hole, and then the lifting operation can be carried out. The foundation ring is simple and convenient to lift.

[0009] Preferably, the pushing component includes a movable cylinder coaxially sleeved on the column, and each of the four inserts is provided with a first ball bearing located inside the rotating ring at one end near the column. The bottom end of the movable cylinder is coaxially provided with a conical cylinder, and the outer diameter of the top opening of the conical cylinder is consistent with the outer diameter of the movable cylinder. The conical cylinder is located above the four first ball bearings. The column is provided with a power component for pushing the movable cylinder to move vertically. When the movable cylinder moves vertically downward, the conical cylinder on the movable cylinder is used to squeeze the first ball bearings away from the column. Each of the four inserts is coaxially fixedly connected with a first retaining ring located outside the rotating ring, and each of the four first retaining rings is provided with a first tension spring between it and the rotating ring.

[0010] Preferably, the outer wall of the rotating ring is provided with a U-shaped first limiting plate at one end near the four inserts. Each of the four first limiting plates includes a vertical plate and two horizontal plates. The two horizontal plates are horizontally arranged on one side of the vertical plate, and the ends of the two horizontal plates away from the vertical plate are fixedly connected to the outer wall of the rotating ring. A communicating groove corresponding to the first circular groove is opened on one side of the vertical plate. The end of the insert away from the column passes through the communicating groove, and the first retaining ring is located between the two horizontal plates.

[0011] Preferably, the power component includes sliding grooves on opposite sides of the moving cylinder, and both sliding grooves are connected to the top of the moving cylinder. The opposite sides of the column are provided with horizontal fixing plates, and the two fixing plates are vertically slidably connected in the two sliding grooves. The top of each of the two fixing plates is vertically provided with a cylinder, and one end of the piston rod of each cylinder passes through the fixing plate and is fixedly connected to the bottom wall of the sliding groove.

[0012] Preferably, the rotating ring is rotatably connected to the chassis, and the ends of the two fixed plates away from the column are connected by a connecting ring. The connecting ring is coaxially located above the rotating ring and rotatably connected to the rotating ring. The chassis is provided with a driving component for driving the rotating ring to rotate, and the connecting ring is provided with a limiting component for limiting the rotation of the chassis.

[0013] Preferably, the limiting member includes four second circular grooves formed on the outer wall of the connecting ring, and the second circular grooves are located below the fixing plate. The four second circular grooves are evenly distributed along the circumference of the connecting ring. A sliding column is horizontally inserted into each of the four second circular grooves, and the sliding column and the inserted column are staggered. A second ball bearing is provided at one end of each of the four sliding columns near the column, which contacts the outer wall of the conical cylinder. A second retaining ring located outside the connecting ring is coaxially fixedly connected to each of the four sliding columns, and a second tension spring is provided between each of the four second retaining rings and the connecting ring.

[0014] Preferably, the outer wall of the connecting ring is provided with a U-shaped second limiting plate at one end near the four sliding columns, and the structure of the four second limiting plates is the same as that of the first limiting plate. At this time, the end of the sliding column away from the column passes through the connecting groove, and the second retaining ring is located between the two horizontal plates.

[0015] Preferably, each of the four sliding columns has an anti-slip layer at the end opposite to the upright column.

[0016] Preferably, the driving component includes an internal gear ring coaxially disposed on the inner wall of the rotating ring and a motor disposed at the bottom of the chassis. One end of the rotating shaft of the motor passes through the chassis and is provided with a gear located above the chassis. The gear is located inside the internal gear ring and meshes with the internal gear ring.

[0017] Preferably, one of the inserts has an embedding groove at the end opposite to the column, and a distance sensor is provided in the embedding groove. The distance sensor controls the operation of the motor, and the embedding groove is located on the side of the end face of the insert.

[0018] The beneficial effects of this invention are as follows: When in use, the lifting lug is connected to the wire lock of the lifting equipment, then the chassis and column are hoisted into the foundation ring, then the four inserts are aligned with four of the round holes on the foundation ring, and then the four inserts are simultaneously pushed by the pusher to move horizontally away from the column until one end of the four inserts is inserted into the round hole, and then the hoisting operation can be carried out. The hoisting of the foundation ring is simple and convenient. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0021] Figure 2 This is a schematic diagram illustrating the structure of the movable cylinder in this embodiment;

[0022] Figure 3 This is a schematic diagram illustrating the structure of the insert in this embodiment;

[0023] Figure 4 This is a schematic diagram illustrating the structure of the sliding column in this embodiment;

[0024] Figure 5 A schematic diagram of a structure in which one end of a post is inserted into a circular hole;

[0025] Figure 6 This is a structural schematic diagram illustrating the first limiting plate in this embodiment;

[0026] Figure 7 This is a schematic diagram of the structure when the sliding column is in contact with the inner wall of the foundation ring.

[0027] Figure 8 This is a schematic diagram of the basic ring structure.

[0028] Explanation of reference numerals in the attached figures:

[0029] In the diagram: 1. Base ring; 2. Chassis; 3. Column; 4. Rotary ring; 5. First circular groove; 6. Insert post; 7. Circular hole; 8. Lifting lug; 9. Moving cylinder; 10. First ball bearing; 12. Conical cylinder; 13. First retaining ring; 14. First tension spring; 15. First limiting plate; 16. Vertical plate; 17. Horizontal plate; 18. Connecting groove; 19. Sliding groove; 20. Fixing plate; 21. Cylinder; 22. Connecting ring; 23. Second circular groove; 24. Sliding post; 25. Second ball bearing; 26. Second retaining ring; 27. Second tension spring; 28. Anti-slip layer; 29. ​​Internal gear ring; 30. Motor; 31. Gear; 32. Embedded groove; 33. Distance sensor; 34. Second limiting plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] A wind turbine tower hoisting mechanism, such as Figure 1 and Figure 2 and Figure 3 The system includes a chassis 2 located within a base ring 1 and a column 3 coaxially mounted on the top of the chassis 2. A rotating ring 4 is coaxially mounted on the top of the chassis 2, and four first circular grooves 5 are formed on the outer wall of the rotating ring 4. The four first circular grooves 5 are evenly distributed along the circumference of the rotating ring 4. Inserted pins 6 are horizontally inserted into each of the four first circular grooves 5, and the four inserted pins 6 correspond to the circular holes 7 on the base ring 1. The column 3 is provided with a pusher for simultaneously pushing the four inserted pins 6 to move horizontally away from the column 3. The top of the column 3 is provided with a lifting lug 8.

[0032] like Figure 1 and Figure 2 and Figure 3 When in use, connect the lifting lug 8 to the wire lock of the lifting equipment, then lift the chassis 2 and column 3 into the foundation ring 1, then align the four inserts 6 with four of the round holes 7 on the foundation ring 1, and then push the four inserts 6 horizontally away from the column 3 by the pusher until one end of the four inserts 6 is inserted into the round hole 7, and then the lifting operation can be carried out. The diameter of the insert 6 is smaller than the diameter of the round hole 7, which makes it easy for one end of the insert 6 to enter the round hole 7. The lifting of the foundation ring 1 is simple and convenient.

[0033] like Figure 2 and Figure 3 The pushing component includes a movable cylinder 9 coaxially sleeved on the column 3. Each of the four inserts 6 near the column 3 is provided with a first ball bearing 10 located inside the rotating ring 4. The bottom end of the movable cylinder 9 is coaxially provided with a conical cylinder 12, and the outer diameter of the top opening of the conical cylinder 12 is consistent with the outer diameter of the movable cylinder 9. The conical cylinder 12 is located above the four first balls bearing 10. The column 3 is provided with a power component for pushing the movable cylinder 9 to move vertically. When the movable cylinder 9 moves vertically downward, the conical cylinder 12 on the movable cylinder 9 is used to squeeze the first balls bearing 10 away from the column 3. Each of the four inserts 6 is coaxially fixedly connected with a first retaining ring 13 located outside the rotating ring 4, and each of the four first retaining rings 13 and the rotating ring 4 is provided with a first tension spring 14.

[0034] like Figure 2 and Figure 3 When the insert 6 is aligned with the circular hole 7 on the base ring 1, the moving cylinder 9 is pushed vertically downward by the power component. At this time, the conical cylinder 12 moves with the moving cylinder 9. When the outer wall of the conical cylinder 12 contacts the four first ball bearings 10, as the conical cylinder 12 moves downward, as... Figure 5 and Figure 6 Through the cooperation of the conical cylinder 12 and the four first balls 10, the four inserts 6 can be pushed horizontally away from the column 3 until one end of the insert 6 is inserted into the round hole 7. The end of the insert 6 with the first balls 10 is always located in the rotating ring 4.

[0035] As the insert 6 moves horizontally away from the column 3, the first retaining ring 13 moves along with the insert 6, and the first tension spring 14 is stretched. After the foundation ring 1 is hoisted, the moving cylinder 9 is pushed vertically upward by the power component. At this time, the stretched first tension spring 14 allows the insert 6 to move closer to the column 3 until one end of the insert 6 moves out of the round hole 7 and back to its original position (e.g., ...). Figure 3 At this time, the first tension spring 14 is in its natural state, so that it can be used again next time.

[0036] like Figure 3The outer wall of the rotating ring 4 is provided with a U-shaped first limiting plate 15 near one end of each of the four inserts 6. Each of the four first limiting plates 15 includes a vertical plate 16 and two horizontal plates 17. The two horizontal plates 17 are horizontally arranged on one side of the vertical plate 16, and the ends of the two horizontal plates 17 away from the vertical plate 16 are fixedly connected to the outer wall of the rotating ring 4. A connecting groove 18 corresponding to the first circular groove 5 is opened on one side of the vertical plate 16. The end of the insert 6 away from the column 3 passes through the connecting groove 18. The first retaining ring 13 is located between the two horizontal plates 17. The purpose of this arrangement is that when the first retaining ring 13 moves away from the column 3 along with the insert 6, the vertical plate 16 can limit the movement range of the first retaining ring 13, thereby limiting the movement range of the insert 6. The two horizontal plates 17 can protect the first tension spring 14 and reduce the occurrence of damage to the first tension spring 14 due to external force collision.

[0037] like Figure 2 and Figure 3 The power component includes sliding grooves 19 on opposite sides of the movable cylinder 9, and both sliding grooves 19 are connected to the top of the movable cylinder 9. The column 3 has horizontally fixed plates 20 on opposite sides, and the two fixed plates 20 are vertically slidably connected in the two sliding grooves 19. The top of the two fixed plates 20 is vertically provided with cylinders 21, and one end of the piston rod of the cylinders 21 passes through the fixed plate 20 and is fixedly connected to the bottom wall of the sliding groove 19.

[0038] like Figure 2 and Figure 3 When it is necessary to move the moving cylinder 9 vertically, simply open both cylinders 21 simultaneously. Since one end of the piston rod of cylinder 21 is fixedly connected to the bottom wall of the slide groove 19, and cylinder 21 is mounted on the fixed plate 20, which is mounted on the column 3, when both cylinders 21 are opened simultaneously, the piston rod of cylinder 21 will drive the moving cylinder 9 vertically through the slide groove 19 (e.g., ...). Figure 6 Since the fixed plate 20 is vertically slidably connected to the slide groove 19, the fixed plate 20 will not affect the vertical movement of the moving cylinder 9. The fixed plate 20 is always located in the slide groove 19 and will not slide vertically out of the slide groove 19. The cylinder 21 can be replaced with an electric cylinder, which is simple and convenient to use.

[0039] like Figure 2 and Figure 3The rotating ring 4 is rotatably connected to the chassis 2. The ends of the two fixed plates 20 away from the column 3 are connected by a connecting ring 22. The connecting ring 22 is coaxially located above the rotating ring 4 and rotatably connected to the rotating ring 4. The chassis 2 is provided with a driving component for driving the rotating ring 4 to rotate, and the connecting ring 22 is provided with a limiting component for limiting the rotation of the chassis 2. The purpose of this setting is that after the chassis 2 and the column 3 are hoisted into the foundation ring 1, so that the insertion column 6 and the circular hole 7 on the foundation ring 1 are on the same horizontal plane, the chassis 2 is first restrained by the limiting component. The mechanism restricts the rotation of the column 3, preventing it from rotating. Then, the rotating ring 4 is driven to rotate by the drive component. At this time, the rotating ring 4 will drive the four insertion posts 6 to rotate along the rotation axis of the rotating ring 4. This facilitates the alignment of the insertion posts 6 with the round holes 7 without the need for manual rotation of the rotating ring 4. After the insertion posts 6 are aligned with the round holes 7, the push component simultaneously pushes the four insertion posts 6 to move horizontally away from the column 3 until one end of the four insertion posts 6 is inserted into the round holes 7. Then, the hoisting operation can be carried out. It is simple and convenient to use.

[0040] like Figure 4 The limiting components include four second circular grooves 23 formed on the outer wall of the connecting ring 22, and the second circular grooves 23 are located below the fixing plate 20. The four second circular grooves 23 are evenly distributed along the circumference of the connecting ring 22. A sliding column 24 is horizontally inserted into each of the four second circular grooves 23, and the sliding column 24 is staggered from the inserted column 6. A second ball bearing 25 that contacts the outer wall of the conical cylinder 12 is provided at one end of each of the four sliding columns 24 near the column 3. A second retaining ring 26 located outside the connecting ring 22 is coaxially fixedly connected to each of the four sliding columns 24, and a second tension spring 27 is provided between each of the four second retaining rings 26 and the connecting ring 22.

[0041] like Figure 4 When it is necessary to restrict the chassis 2 from rotating, simply open both cylinders 21 simultaneously, causing the conical cylinder 12 to move downwards. At this time, through the cooperation of the conical cylinder 12 and the four second ball bearings 25, the four sliding pillars 24 can be moved simultaneously away from the column 3. Figure 5 and Figure 7 At this time, the second tension spring 27 is stretched until the end of the sliding column 24 away from the column 3 abuts against the inner wall of the base ring 1. When the end of the sliding column 24 away from the column 3 abuts against the inner wall of the base ring 1, the second ball 25 is located in the second circular groove 23. The moving cylinder 9 closes the opening of the second circular groove 23. At this time, the second ball 25 will abut against the outer wall of the moving cylinder 9. At this time, through the cooperation of the sliding column 24, the base ring 1, the moving cylinder 9, the second circular groove 23, the connecting ring 22, and the two fixed plates 20, the column 3 can be restricted, so that the chassis 2 cannot rotate.

[0042] Meanwhile, since the ends of the four sliding columns 24 that are away from the column 3 are all in contact with the inner wall of the foundation ring 1, the stability of the foundation ring 1 can be improved and shaking can be reduced by using the four sliding columns 24, which is simple and convenient to use.

[0043] like Figure 3 and Figure 4 Each of the four sliding columns 24 has a U-shaped second limiting plate 34 on the outer wall of the connecting ring 22. The structure of the four second limiting plates 34 is the same as that of the first limiting plate 15. At this time, the end of the sliding column 24 away from the column 3 passes through the connecting groove 18. The second retaining ring 26 is located between the two horizontal plates 17. The purpose of this setting is that when the second retaining ring 26 moves away from the column 3 along with the sliding column 24, the vertical plate 16 in the second limiting plate 34 can limit the movement range of the second retaining ring 26, thereby limiting the movement range of the sliding column 24. The two horizontal plates 17 in the second limiting plate 34 can protect the second tension spring 27 and reduce the occurrence of damage to the second tension spring 27 due to external force collision.

[0044] like Figure 5 Each of the four sliding columns 24 is provided with an anti-slip layer 28 at the end opposite to the column 3. The purpose of this setting is to increase the frictional resistance when the sliding column 24 comes into contact with the inner wall of the base ring 1 through the anti-slip layer 28, making it simple and convenient to use.

[0045] like Figure 3 The driving component includes an internal gear ring 29 coaxially mounted on the inner wall of the rotating ring 4 and a motor 30 mounted at the bottom of the chassis 2. One end of the rotating shaft of the motor 30 passes through the chassis 2 and is equipped with a gear 31 located above the chassis 2. The gear 31 is located inside the internal gear ring 29 and meshes with the internal gear ring 29. When it is necessary to drive the rotating ring 4 to rotate, simply turn on the motor 30. The rotating shaft of the motor 30 drives the gear 31 to rotate. The gear 31 can drive the rotating ring 4 to rotate on the chassis 2 through the internal gear ring 29 it meshes with. At this time, it is easy to align the insertion post 6 with the round hole 7 without manually rotating the rotating ring 4 to align the insertion post 6 with the round hole 7. It is simple and convenient to use.

[0046] like Figure 2 and Figure 3 One of the inserts 6 has an embedding groove 32 at the end opposite to the upright 3, and a distance sensor 33 is installed in the embedding groove 32. The distance sensor 33 controls the operation of the motor 30. The embedding groove 32 is located on the side of the end face of the insert 6. The purpose of this setting is that when the rotating ring 4 drives the insert 6 to rotate along the rotation axis of the rotating ring 4, the distance sensor 33 detects the distance D between the inner wall of the base ring 1 and the insert 6. As the rotating ring 4 rotates, the rotation direction is as follows: Figure 2When the insertion post 6, equipped with distance sensor 33, passes through one of the circular holes 7 on the base ring 1, the distance D detected by distance sensor 33 changes. The first change is that distance sensor 33 cannot detect the distance value; the second change is that the distance value detected by distance sensor 33 is greater than D. Under the above two changes, distance sensor 33 controls motor 30 to stop working. At this time, the insertion post 6 can be aligned with the circular hole 7 on the base ring 1. Motor 30 is a servo motor. The two horizontal plates 17 in the first limiting plate 15 have horizontal sliding grooves (not shown in the figure) on the side that are close to each other. The sliding grooves are connected to sliders (not shown in the figure) and both sliders are fixedly connected to the outer wall of the first retaining ring 13. Through the cooperation of the sliders, the sliding grooves and the first retaining ring 13, the insertion post 6 will not rotate in the first circular groove 5, which is simple and convenient to use.

[0047] After the foundation ring 1 is lifted to the appropriate position, the tower is then installed on the foundation ring 1. The tower is operated using a tail-slip crane to ensure that the sway is reduced to within 0.2 meters, making it easy to remove the hook from the tower safely and conveniently.

[0048] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A wind turbine tower hoisting mechanism, characterized in that, The system includes a chassis (2) located within a base ring (1) and a column (3) coaxially mounted on the top of the chassis (2). A rotating ring (4) is coaxially mounted on the top of the chassis (2), and four first circular grooves (5) are provided on the outer wall of the rotating ring (4). The four first circular grooves (5) are evenly distributed along the circumference of the rotating ring (4). Inserted pins (6) are horizontally inserted in the four first circular grooves (5), and the four inserted pins (6) correspond to the circular holes (7) on the base ring (1). The column (3) is provided with a pusher for simultaneously pushing the four inserted pins (6) to move horizontally away from the column (3). The top of the column (3) is provided with a lifting lug (8). The pushing component includes a movable cylinder (9) coaxially sleeved on the column (3). Each of the four inserts (6) near the column (3) is provided with a first ball (10) located in the rotating ring (4). The bottom end of the movable cylinder (9) is coaxially provided with a conical cylinder (12), and the outer diameter of the top opening of the conical cylinder (12) is consistent with the outer diameter of the movable cylinder (9). The conical cylinder (12) is located above the four first balls (10). The column (3) is provided with a power component for pushing the movable cylinder (9) to move vertically. When the movable cylinder (9) moves vertically downward, the conical cylinder (12) on the movable cylinder (9) is used to squeeze the first balls (10) away from the column (3). Each of the four inserts (6) is coaxially fixedly connected with a first retaining ring (13) located outside the rotating ring (4), and each of the four first retaining rings (13) and the rotating ring (4) is provided with a first tension spring (14). The power component includes sliding grooves (19) opened on opposite sides of the moving cylinder (9), and both sliding grooves (19) are connected to the top of the moving cylinder (9). The column (3) is provided with horizontal fixing plates (20) on opposite sides, and the two fixing plates (20) are vertically slidably connected in the two sliding grooves (19). The top of the two fixing plates (20) is provided with cylinders (21) vertically, and one end of the piston rod of the cylinder (21) passes through the fixing plate (20) and is fixedly connected to the bottom wall of the sliding groove (19). The rotating ring (4) is rotatably connected to the chassis (2). The ends of the two fixed plates (20) away from the column (3) are connected by a connecting ring (22). The connecting ring (22) is coaxially located above the rotating ring (4) and rotatably connected to the rotating ring (4). The chassis (2) is provided with a driving component for driving the rotating ring (4) to rotate. The connecting ring (22) is provided with a limiting component for limiting the rotation of the chassis (2). The limiting component includes four second circular grooves (23) formed on the outer wall of the connecting ring (22), and the second circular grooves (23) are located below the fixing plate (20). The four second circular grooves (23) are evenly distributed along the circumference of the connecting ring (22). Each of the four second circular grooves (23) is horizontally inserted with a sliding column (24), and the sliding column (24) is staggered from the inserted column (6). Each of the four sliding columns (24) is provided with a second ball (25) that contacts the outer wall of the conical cylinder (12) at one end near the column (3). Each of the four sliding columns (24) is coaxially fixedly connected with a second retaining ring (26) located outside the connecting ring (22), and each of the four second retaining rings (26) and the connecting ring (22) is provided with a second tension spring (27).

2. The wind turbine tower hoisting mechanism as described in claim 1, characterized in that, The outer wall of the rotating ring (4) is provided with a U-shaped first limiting plate (15) near one end of the four inserts (6). Each of the four first limiting plates (15) includes a vertical plate (16) and two horizontal plates (17). The two horizontal plates (17) are horizontally arranged on one side of the vertical plate (16), and the ends of the two horizontal plates (17) away from the vertical plate (16) are fixedly connected to the outer wall of the rotating ring (4). A connecting groove (18) corresponding to the first circular groove (5) is opened on one side of the vertical plate (16). The end of the insert (6) away from the column (3) passes through the connecting groove (18). The first retaining ring (13) is located between the two horizontal plates (17).

3. The wind turbine tower hoisting mechanism as described in claim 2, characterized in that, The outer wall of the connecting ring (22) is provided with a U-shaped second limiting plate (34) at one end near the four sliding columns (24). The structure of the four second limiting plates (34) is the same as that of the first limiting plate (15). At this time, the end of the sliding column (24) away from the column (3) passes through the connecting groove (18), and the second retaining ring (26) is located between the two horizontal plates (17).

4. The wind turbine tower hoisting mechanism as described in claim 3, characterized in that, Each of the four sliding columns (24) has an anti-slip layer (28) at the end opposite to the column (3).

5. The wind turbine tower hoisting mechanism as described in claim 4, characterized in that, The driving component includes an internal gear ring (29) coaxially disposed on the inner wall of the rotating ring (4) and a motor (30) disposed at the bottom of the chassis (2). One end of the rotating shaft of the motor (30) passes through the chassis (2) and is provided with a gear (31) located above the chassis (2). The gear (31) is located inside the internal gear ring (29) and meshes with the internal gear ring (29).

6. The wind turbine tower hoisting mechanism as described in claim 5, characterized in that, One of the inserts (6) has an embedded groove (32) at one end away from the column (3), and a distance sensor (33) is provided in the embedded groove (32). The distance sensor (33) controls the motor (30) to work. The embedded groove (32) is located on the side of the end face of the insert (6).

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