Auxiliary positioning device for hoisting of wind power tower drum

Abstract

The utility model discloses a wind power tower hoisting auxiliary positioning device, which belongs to the technical field of wind power towers and comprises a wind power tower body, an auxiliary positioning component is arranged at one end of the wind power tower body, and a plurality of fixing rings are welded on the inner wall of the other end of the wind power tower body in an annular array manner. The auxiliary positioning assembly comprises a fixed clamping lantern ring cover clamped to the peripheral side of one end of the wind power tower barrel body. The upper end fastening component is arranged on the peripheral side of the fixed clamping lantern ring cover, the lower end fastening assembly is arranged in the fixed clamping lantern ring cover, extends to the other end of the wind power tower drum body along an inner cavity of the wind power tower drum body and is in fastening connection with the fixed ring, and a lifting hook retracting and releasing assembly is arranged in the fixed clamping lantern ring cover. A clamping and clamping cavity used for clamping and containing the top end of the wind power tower barrel body is formed in the fixed clamping lantern ring cover. According to the utility model, the safety of the hoisting operation is improved by improving the aspects of multi-point fixing, synchronous supporting and accurate positioning in the hoisting process of the wind power tower drum.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine tower technology, and in particular, it is an auxiliary positioning device for hoisting wind turbine towers. Background Technology

[0002] As a key component of wind power generation systems, the installation of wind turbine towers is a crucial step in the entire wind farm construction process. Generally, wind turbine towers consist of multiple sections, which are installed section by section on the foundation through hoisting operations until the designed height is reached. During hoisting, large lifting equipment such as crawler cranes or tower cranes are typically used to lift the tower sections from the ground or transport vehicles and accurately install them onto the already installed upper section of the tower or foundation. The lifting equipment uses wire ropes or slings to lift the tower sections and performs rotation and translation operations in the air to achieve alignment and installation. Simultaneously, various factors such as wind speed, terrain, tower weight, and dimensions must be considered during the hoisting process to ensure the safety and smooth progress of the operation.

[0003] During hoisting, the tower sections are heavy and large, and are greatly affected by external factors such as wind and terrain, making them prone to tilting in the air. Excessive tilt not only increases the difficulty and risk of hoisting but can also damage the tower and lifting equipment. Existing wind turbine tower hoisting equipment often focuses only on support in one direction. This design approach neglects the need for comprehensive and balanced support to maintain stability throughout the hoisting process. If only one end of the tower is supported, the tower may tilt or even collapse during hoisting due to an unstable center of gravity. This means the tower is more susceptible to external disturbances (such as wind speed changes) during hoisting, affecting its verticality. Once the tower deviates from its vertical position, installation becomes even more difficult.

[0004] A search revealed a Chinese patent publication number: CN220264923U, describing a wind turbine tower hoisting device. This device includes a hoisting plate, multiple clamping plates, and multiple connectors. The upper surface of the hoisting plate has a lifting ring for connecting hoisting equipment. The clamping plate includes an upper horizontal plate, a vertical plate, and a lower horizontal plate. The vertical plate is connected to the same end of the upper and lower horizontal plates to form a U-shaped plate. The upper and lower horizontal plates have mounting holes. Multiple clamping plates are evenly clamped onto the mounting flange along the circumference of the wind turbine tower. The mounting holes are opposite to the connecting holes and are connected by bolts. The number of connectors is equal to the number of clamping plates and they are arranged in a one-to-one correspondence. The upper end of the connector is hinged to the hoisting plate, and the lower end of the connector is hinged to the upper horizontal plate, with their hinge axes parallel.

[0005] The patent documents cited above also have the same problem: supporting only one end of the tower may cause the tower to tilt or even fall during hoisting due to an unstable center of gravity. This means that the tower is more susceptible to external interference (such as changes in wind speed) during hoisting, which may affect its verticality. Once the tower deviates from its vertical state, it will make installation more difficult. Utility Model Content

[0006] The purpose of this utility model is to provide an auxiliary positioning device for hoisting wind turbine towers to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wind turbine tower hoisting auxiliary positioning device, comprising a wind turbine tower body, an auxiliary positioning component at one end of the wind turbine tower body, and a plurality of fixing rings welded in a ring array on the inner wall of the other end. The auxiliary positioning component includes a fixing clamping sleeve cover snapped onto the periphery of one end of the wind turbine tower body, an upper fastening component disposed on the periphery of the fixing clamping sleeve cover and locking one end of the wind turbine tower body, and a lower fastening component disposed inside the fixing clamping sleeve cover and extending along the inner cavity of the wind turbine tower body to the other end of the wind turbine tower body and fastened to the fixing rings. After the crane connects with the fixed clamping sleeve cover to lift the wind turbine tower body into a vertical position, the fixed clamping sleeve cover is equipped with a hook retraction assembly. When the hook retraction assembly pulls the lower fastening assembly upward, it causes the lower fastening assembly to tighten the fixing ring, so that the lower fastening assembly supports and tightens from the bottom end of the wind turbine tower body upward when the wind turbine tower body is lifted vertically. The fixed clamping sleeve cover has a clamping and engaging cavity for locking and accommodating the top end of the wind turbine tower body. The upper fastening component passes through the clamping and engaging cavity and locks and supports the top end of the wind turbine tower body in the clamping and engaging cavity.

[0008] In a preferred embodiment, the upper fastening component includes a ring array of multiple locking bolts that penetrate the outer wall of the fixed clamping sleeve cover. The screw ends of the locking bolts penetrate into the clamping cavity and abut against the top outer wall of the wind turbine tower body.

[0009] In a preferred embodiment of this design, the lower fastening assembly includes at least two upper hooks, which are connected to two symmetrically arranged fixing rings.

[0010] In a preferred embodiment, a supporting crossbeam is horizontally welded to one side of the inner wall of the fixed clamping sleeve cover, and a bearing seat is welded to the symmetrical side of the supporting crossbeam and located on the inner wall of the fixed clamping sleeve cover. A first bearing is provided in the bearing seat, and a rotating shaft is interference-fitted to the inner ring of the first bearing.

[0011] In a preferred embodiment of this design, the hook retraction assembly includes a servo motor fixed to the free end of the supporting crossbeam and a retraction wheel fixedly sleeved on the free end of the rotating shaft. The output shaft of the servo motor is fixedly connected to the free end of the rotating shaft.

[0012] In this preferred embodiment, a pull rope is wound around the circumference of the winding reel, and at least two branch ropes are symmetrically connected to the free end of the pull rope. The end of each branch rope away from the pull rope is fixedly connected to one of the upper pull hooks.

[0013] In a preferred embodiment, the inner walls on both sides of the clamping and snapping cavity are respectively bonded with a first anti-slip pad and a second anti-slip pad, and the first anti-slip pad and the second anti-slip pad are in frictional contact with the inner and outer walls of the top of the wind turbine tower body.

[0014] In a preferred embodiment, a cross support frame is welded between the upper inner walls of the fixed clamping sleeve cover, and a lifting ring is threadedly connected to the middle position of the top surface of the cross support frame. The lifting ring is hoisted and connected to the lifting end of an external crane.

[0015] In a preferred embodiment, the supporting crossbeam is fitted with an inverted first T-shaped hanger on the periphery of one end near the servo motor, and the top of the first T-shaped hanger is welded to the bottom surface of the cross support frame.

[0016] In a preferred embodiment, the end of the rotating shaft near the winding reel is interference-fitted with a second bearing, and the outer ring of the second bearing is fitted with an inverted second T-shaped hanger. The top end of the second T-shaped hanger is welded to the bottom surface of the cross support frame.

[0017] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0018] This wind turbine tower hoisting auxiliary positioning device uses an upper fastening component to fix the top of the wind turbine tower body and a lower fastening component to tighten and support it at the bottom. This achieves simultaneous stable control of both the upper and lower ends of the wind turbine tower body during the entire hoisting process. This method effectively avoids the risk of structural imbalance or sliding caused by applying force only to one end, greatly improving the safety of the entire hoisting process. The design of this device ensures that the wind turbine tower body remains vertical when being hoisted, preventing it from swaying or shifting due to instability at the bottom, thus protecting the wind turbine tower itself from damage.

[0019] The fixed clamping sleeve cover has a special clamping and snapping cavity inside, which is used to precisely snap the top of the wind turbine tower body. In conjunction with the structure of the upper fastening component, the position of the wind turbine tower body is fixed, ensuring that it reaches the predetermined position accurately. Through the action of the hook retraction component, the tension of the lower fastening component can be adjusted in real time according to the actual situation, further optimizing the position of the wind turbine tower body and ensuring the accuracy of its final installation position.

[0020] This technical solution significantly improves the safety and efficiency of hoisting operations by enhancing multi-point fixing, synchronous support, and precise positioning during the wind turbine tower hoisting process. It also reduces the difficulty of operation and is of great significance to the construction and maintenance of the wind power industry. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a structural schematic diagram of the wind turbine tower body of this utility model in the state of being vertically suspended;

[0024] Figure 3 This is a schematic diagram of the connection structure of the fixing clamping sleeve cover of this utility model;

[0025] Figure 4 This is a cross-sectional view of the fixing clamping sleeve cover of this utility model;

[0026] Figure 5 This is a schematic diagram of the connection structure between the winding reel and the servo motor of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] In the diagram: 1. Wind turbine tower body; 2. Auxiliary positioning component; 3. Upper fastening component; 4. Fixed clamping sleeve cover; 5. Lifting ring; 6. Locking bolt; 7. Fixing ring; 8. Upper pull hook; 9. Lower fastening component; 10. Cross support frame; 11. Lifting hook retraction component; 12. Rotary shaft; 13. Pull rope; 14. Branch rope; 15. First T-shaped lifting rod; 16. Clamping and engaging cavity; 17. First anti-slip pad; 18. Support beam; 19. First bearing; 20. Second anti-slip pad; 21. Screw hole; 22. Bearing seat; 23. Rewinding reel; 24. Servo motor; 25. Second T-shaped lifting rod; 26. Second bearing. Detailed Implementation

[0029] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0030] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0031] This embodiment provides, for example Figures 1 to 5 The wind turbine tower hoisting auxiliary positioning device shown includes a wind turbine tower body 1. An auxiliary positioning component 2 is provided at one end of the wind turbine tower body 1, and multiple fixing rings 7 are welded in a ring array on the inner wall of the other end. The auxiliary positioning component 2 includes a fixing clamping sleeve cover 4 that is snapped onto the periphery of one end of the wind turbine tower body 1; an upper fastening component 3 located around the fixing clamping sleeve cover 4 and locking one end of the wind turbine tower body 1; and a lower fastening component 9 located inside the fixing clamping sleeve cover 4 and extending along the inner cavity of the wind turbine tower body 1 to the other end of the wind turbine tower body 1 and fastened to the fixing rings 7. The device is hoisted by an external crane and the fixing clamping sleeve... After the wind turbine tower body 1 is hoisted into a vertical position by the ring cover 4 hoisting connection, the fixed clamping sleeve ring cover 4 is provided with a hook retraction assembly 11. When the hook retraction assembly 11 pulls the lower fastening assembly 9 upward, it causes the lower fastening assembly 9 to tighten the fixing ring 7, so that the lower fastening assembly 9 supports and tightens from the bottom end of the wind turbine tower body 1 when the wind turbine tower body 1 is hoisted into a vertical position. The fixed clamping sleeve ring cover 4 has a clamping and locking cavity 16 for locking and accommodating the top end of the wind turbine tower body 1. The upper fastening component 3 passes through the clamping and locking cavity 16 and locks and supports the top end of the wind turbine tower body 1 in the clamping and locking cavity 16. The lower fastening component 9 is hoisted and supported from the bottom of the wind turbine tower body 1, while the upper fastening component 3 is locked and supported at the top of the wind turbine tower body 1. This method of synchronous locking and support from top to bottom not only improves the safety of hoisting and supporting the wind turbine tower body 1, but also helps to position the wind turbine tower body 1 and prevents the top of the wind turbine tower body 1 from shaking and shifting its position at the bottom during hoisting.

[0032] In this embodiment, the upper fastening component 3 includes a ring array of multiple locking bolts 6 that penetrate the outer wall of the fixed clamping sleeve cover 4. The screw ends of the locking bolts 6 penetrate into the clamping engagement cavity 16 and abut against the top outer wall of the wind turbine tower body 1. The outer wall of the fixed clamping sleeve cover 4 has a ring array of multiple screw holes 21 for threaded connection of the locking bolts 6, and the screw holes 21 penetrate into the clamping engagement cavity 16.

[0033] In this embodiment, the lower fastening component 9 includes at least two pull hooks 8, which are hooked to two symmetrically arranged fixing rings 7. By hooking the pull hooks 8 onto the fixing rings 7, the components of the hook retraction component 11 pull the components upward, effectively supporting the bottom of the wind turbine tower body 1. This method can effectively improve the stability of the bottom of the wind turbine tower body 1 and avoid the overall structure tilting or swaying due to instability at the bottom.

[0034] In this embodiment, a supporting crossbeam 18 is horizontally welded to one side of the inner wall of the fixed clamping sleeve cover 4. A bearing seat 22 is welded to the symmetrical side of the supporting crossbeam 18 and located on the inner wall of the fixed clamping sleeve cover 4. A first bearing 19 is provided in the bearing seat 22, and a rotating shaft 12 is interference-fitted to the inner ring of the first bearing 19. The supporting crossbeam 18 provides a stable mounting platform for the servo motor 24, while the first bearing 19 ensures the smooth rotation of the rotating shaft 12. This design ensures the stable operation of the hook retraction assembly 11, reduces mechanical wear, and extends the service life of the equipment.

[0035] In this embodiment, the hook retraction assembly 11 includes a servo motor 24 fixed to the free end of the supporting crossbeam 18 and a winding reel 23 fixedly sleeved on the free end of the rotating shaft 12. The output shaft of the servo motor 24 is fixedly connected to the free end of the rotating shaft 12. This allows the servo motor 24 to drive the rotating shaft 12 to rotate in the first bearing 19, thereby driving the winding reel 23 to rotate and retract the pull rope 13.

[0036] In this embodiment, a pull rope 13 is wound around the circumference of the winding reel 23. At least two branch ropes 14 are symmetrically connected to the free end of the pull rope 13. The end of each branch rope 14 furthest from the pull rope 13 is fixedly connected to one of the upper pull hooks 8. When the servo motor 24 drives the winding reel 23 to wind up, the winding reel 23 winds up the pull rope 13, causing the pull rope 13 to pull the branch ropes 14 and the upper pull hooks 8, causing the upper pull hooks 8 to engage with the fixing ring 7 and tighten, thereby pulling the wind turbine tower body 1 upwards to prevent it from falling. When the servo motor 24 drives the winding reel 23 to unwind, the winding reel 23 unwinds the pull rope 13, causing the upper pull hooks 8 to lose the engagement tension with the fixing ring 7, thereby causing the upper pull hooks 8 to disengage from the fixing ring 7, completing the release of the bottom end of the wind turbine tower body 1.

[0037] In this embodiment, a first anti-slip pad 17 and a second anti-slip pad 20 are respectively bonded to the inner walls of both sides of the clamping cavity 16. The first anti-slip pad 17 and the second anti-slip pad 20 are in frictional contact with the inner and outer walls of the top of the wind turbine tower body 1. By increasing the friction, the wind turbine tower body 1 is prevented from sliding during the clamping process, which enhances the reliability of the fixation and reduces the potential risks caused by sliding.

[0038] In this embodiment, a cross support frame 10 is welded to the upper part of the inner wall of the fixed clamping sleeve cover 4. A lifting ring 5 is threadedly connected to the middle position of the top surface of the cross support frame 10. The lifting ring 5 is hoisted to the lifting end of an external crane. The cross support frame 10 provides a solid support point for the lifting ring 5, ensuring stability during the hoisting process, strengthening the stability of the overall structure, and ensuring the smooth progress of the hoisting operation.

[0039] In this embodiment, an inverted first T-shaped hanger 15 is fitted around the end of the supporting beam 18 near the servo motor 24. The top of the first T-shaped hanger 15 is welded to the bottom surface of the cross support frame 10. The first T-shaped hanger 15 enhances the structural strength of the supporting beam 18, provides additional support, and ensures that it is not easily damaged during long-term use.

[0040] In this embodiment, a second bearing 26 is interference-fitted at one end of the rotating shaft 12 near the take-up reel 23. An inverted second T-shaped hanger 25 is fitted around the outer ring of the second bearing 26, and the top end of the second T-shaped hanger 25 is welded to the bottom surface of the cross support frame 10. The second bearing 26 and the second T-shaped hanger 25 work together to ensure the stable rotation of the rotating shaft 12 and reduce vibration.

[0041] Working principle

[0042] The wind turbine tower hoisting auxiliary positioning device engages one end of the wind turbine tower body 1 with the fixed clamping sleeve cover 4, and through the upper fastening component 3, i.e. the locking bolt 6, passes through the screw hole 21 of the fixed clamping sleeve cover 4 and is tightened to the outer wall of the top of the wind turbine tower body 1, ensuring that the top of the wind turbine tower body 1 is firmly locked in the clamping engagement cavity 16. Inside the other end of the wind turbine tower body 1, the fixing ring 7 has been pre-welded to its inner wall to provide a hooking point for the subsequent lower fastening component 9, and the upper hook 8 is hooked onto the fixing ring 7.

[0043] The lifting end of the external crane is connected to the lifting ring 5 at the top of the fixed clamping sleeve cover 4. The lifting ring 5 is fixed by a threaded connection at the middle position of the cross support frame 10, ensuring the stability and safety of the entire device. The external crane is started to slowly lift the wind turbine tower body 1 from a horizontal state to a vertical state. During this process, the hook retraction assembly 11 inside the fixed clamping sleeve cover 4 begins to function. The PLC in the external control box turns on the servo motor 24 to drive the rotating shaft 12 to rotate, which in turn drives the winding wheel 23 to rotate. The pull rope 13 is wound up accordingly. The tightening of the pull rope 13 will pull the branch rope 14. The branch rope 14 is connected to the upper pull hook 8. As the pull rope 13 is further wound up, the upper pull hook 8 is gradually pulled upward and finally tightens the fixed ring 7, forming effective support and tension for the bottom end of the wind turbine tower body 1.

[0044] Meanwhile, the top of the wind turbine tower body 1 is firmly fixed in the clamping cavity 16 by the upper fastening component 3, and the friction is increased by the first anti-slip pad 17 and the second anti-slip pad 20 to prevent slippage or loosening. The winding wheel 23 is adjusted by controlling the forward and reverse rotation of the servo motor 24 to ensure that it remains vertical during hoisting, reduce the risk of shaking and displacement, and achieve precise positioning.

[0045] Once the wind turbine tower body 1 is successfully hoisted to the predetermined position, the servo motor 24 is stopped, and the entire device is in a static state for docking and installation of the wind turbine tower.

[0046] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine tower hoisting auxiliary positioning device, comprising a wind turbine tower body (1), characterized in that: One end of the wind turbine tower body (1) is provided with an auxiliary positioning component (2), and the inner wall of the other end is welded with a plurality of fixing rings (7). The auxiliary positioning component (2) includes a fixing clamping sleeve cover (4) that is snapped onto the periphery of one end of the wind turbine tower body (1), an upper fastening component (3) that is provided on the periphery of the fixing clamping sleeve cover (4) and locks one end of the wind turbine tower body (1), and a lower fastening component (9) that is provided inside the fixing clamping sleeve cover (4) and extends along the inner cavity of the wind turbine tower body (1) to the other end of the wind turbine tower body (1) and is fastened to the fixing rings (7). After the wind turbine tower body (1) is hoisted into a vertical state by connecting it with the fixed clamping sleeve cover (4) by an external crane, a hook retraction assembly (11) is provided inside the fixed clamping sleeve cover (4). When the hook retraction assembly (11) pulls the lower fastening assembly (9) upward, it causes the lower fastening assembly (9) to tighten the fixing ring (7), so that the lower fastening assembly (9) supports and tightens from the bottom end of the wind turbine tower body (1) in the vertical state of the hoisted wind turbine tower body (1). The fixed clamping sleeve cover (4) has a clamping and clamping cavity (16) inside for clamping and accommodating the top end of the wind turbine tower body (1). The upper fastening component (3) passes through the clamping and clamping cavity (16) and locks and supports the top end of the wind turbine tower body (1) in the clamping and clamping cavity (16).

2. The wind turbine tower hoisting auxiliary positioning device according to claim 1, characterized in that: The upper fastening component (3) includes a ring array of multiple locking bolts (6) that pass through the outer wall of the fixed clamping sleeve cover (4). The screw end of the locking bolt (6) passes through the clamping and snapping cavity (16) and abuts against the top outer wall of the wind turbine tower body (1).

3. The wind turbine tower hoisting auxiliary positioning device according to claim 2, characterized in that: The lower fastening assembly (9) includes at least two upper hooks (8), which are hooked to two of the symmetrically arranged fixing rings (7).

4. The wind turbine tower hoisting auxiliary positioning device according to claim 3, characterized in that: A support beam (18) is horizontally welded to one side of the inner wall of the fixed clamping sleeve cover (4). A bearing seat (22) is welded to the symmetrical side of the support beam (18) and located on the inner wall of the fixed clamping sleeve cover (4). A first bearing (19) is provided in the bearing seat (22). The inner ring of the first bearing (19) is interference-fitted with a rotating shaft (12).

5. The wind turbine tower hoisting auxiliary positioning device according to claim 4, characterized in that: The hook retraction assembly (11) includes a servo motor (24) fixed to the free end of the support beam (18) and a retraction wheel (23) fixedly sleeved on the free end of the rotating shaft (12). The output shaft of the servo motor (24) is fixedly connected to the free end of the rotating shaft (12).

6. The wind turbine tower hoisting auxiliary positioning device according to claim 5, characterized in that: The winding reel (23) is wound with a pull rope (13) around its periphery. At least two branch ropes (14) are symmetrically connected to the free end of the pull rope (13). The end of each branch rope (14) away from the pull rope (13) is fixedly connected to one of the upper hooks (8).

7. The wind turbine tower hoisting auxiliary positioning device according to claim 6, characterized in that: The inner walls of the clamping cavity (16) on both sides are respectively bonded with a first anti-slip pad (17) and a second anti-slip pad (20), and the first anti-slip pad (17) and the second anti-slip pad (20) are in frictional contact with the inner and outer walls of the top of the wind turbine tower body (1).

8. The wind turbine tower hoisting auxiliary positioning device according to claim 7, characterized in that: A cross support frame (10) is welded between the upper inner walls of the fixed clamping sleeve cover (4). A lifting ring (5) is threadedly connected to the middle position of the top surface of the cross support frame (10). The lifting ring (5) is hoisted to the lifting end of an external crane.

9. The wind turbine tower hoisting auxiliary positioning device according to claim 8, characterized in that: The supporting crossbeam (18) is fitted with an inverted first T-shaped hanger (15) on one side of the servo motor (24), and the top of the first T-shaped hanger (15) is welded to the bottom surface of the cross support frame (10).

10. The wind turbine tower hoisting auxiliary positioning device according to claim 9, characterized in that: The shaft (12) is fitted with a second bearing (26) at one end near the winding wheel (23). The outer ring of the second bearing (26) is fitted with an inverted second T-shaped rod (25). The top of the second T-shaped rod (25) is welded to the bottom surface of the cross support frame (10).

Images