A wind turbine blade hoisting anti-shaking fixing device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNXIA ELECTRIC ENERGY (YUNNAN) CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-06-26
AI Technical Summary
Existing wind turbine blade hoisting devices lack adaptability and cannot quickly adapt to blades of different lengths and curvatures. Furthermore, defects in pre-sway control result in low hoisting safety and efficiency.
It adopts a threaded connecting rod and a multi-point rigid constraint structure. Through the precise fit between the threaded rod and the threaded groove, it can achieve rapid length adjustment and multi-point rigid fixation. Combined with adjustable clamps and fastening screws, it can adapt to the stable clamping of blades of different specifications.
It improves the versatility and lifting safety of the equipment, reduces the frequency of equipment replacement and procurement costs, shortens the adaptation time, and enhances the turnover efficiency and safety of lifting operations.
Smart Images
Figure CN224411214U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of wind turbine installation equipment, and in particular to a wind turbine blade hoisting anti-sway fixing device. Background Technology
[0002] As the core component for capturing wind energy, the safety and stability of wind turbine blades during installation directly affect the construction efficiency and operational safety of the entire wind farm. With the continuous development of wind power technology, the single-unit capacity of wind turbines continues to increase, and the blade size has also increased significantly. Currently, the blade length of the mainstream 2MW class is 48-59 meters, and the blade length of 5MW and above units exceeds 60 meters. The blade length of some offshore models even exceeds 120 meters. During blade installation, due to the large length and high flexibility of the blades, they are easily affected by external factors and sway before and during the installation process. Specifically, the existing technology has the following problems:
[0003] Insufficient adaptability: Traditional hoisting and fixing devices are mostly fixed-length structures that can only be adapted to blades of specific specifications. When faced with blades of different lengths and curvatures, the entire fixing device needs to be replaced, resulting in poor equipment versatility, high procurement costs, and frequent equipment replacements that prolong the hoisting operation cycle.
[0004] Pre-sway control defects: Before lifting, the blades are usually placed on the ground or on temporary supports. Pre-sway is easily caused by factors such as natural wind causing blade swaying, personnel adjustment operations, and uneven force caused by uneven ground. Existing fixing methods mostly use a single lifting point or simple binding, which cannot form multi-point rigid constraints on the root and middle of the blade. After the pre-sway accumulates, it may cause violent swinging at the moment of lifting, which poses a risk of collision with lifting equipment or ground facilities.
[0005] Poor assembly flexibility: Traditional devices have limited length adjustment range and a cumbersome adjustment process, making it difficult to quickly adapt to the installation requirements of different blades on site. In the batch hoisting operations of large wind farms, this defect leads to low equipment turnover efficiency and seriously affects the construction progress.
[0006] Therefore, developing a hoisting and fixing device that can adapt to blades of different specifications and effectively prevent pre-shaking before hoisting through rigid connection has become the key to solving the current hoisting problem of wind turbine blades.
[0007] To address these shortcomings, we have proposed a wind turbine blade hoisting anti-sway fixing device. Utility Model Content
[0008] The purpose of this utility model is to provide a wind turbine blade hoisting anti-sway fixing device to overcome the shortcomings of the existing technology.
[0009] To achieve the above objectives, the present invention adopts the following technical solution: a wind turbine blade hoisting anti-sway fixing device, comprising multiple threaded connecting rods, wherein each end of the connecting rod is provided with a threaded rod and a threaded groove, and adjacent connecting rods are detachably connected by the cooperation of the threaded rod and the threaded groove;
[0010] The connecting rod is provided with multiple brackets at intervals, and a fastening screw is threaded through the bracket. A clamp is connected to the end of the fastening screw near the blade. A matching groove is opened on the surface of the bracket at the position corresponding to the connecting rod.
[0011] The connecting rod is equipped with a lifting rope via a lifting ring, and the bracket is also equipped with fastening bolts for locking the bracket.
[0012] The inner wall of the fitting groove is provided with a rubber buffer layer, and the surface of the rubber buffer layer is provided with anti-slip texture.
[0013] The fitting accuracy between the threaded rod and the threaded groove is 6H / 6g.
[0014] The fixture has an arc-shaped structure, and the radius of the arc can be adjusted by replacing fixtures of different specifications.
[0015] The bracket and the connecting rod are detachably connected, and the brackets are evenly distributed along the length of the connecting rod.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. This utility model, by setting multiple threaded connecting rods, allows for flexible adjustment of the overall length of the device according to the blade length. Adjacent connecting rods achieve rapid splicing through the precise fit of the threaded rod and threaded groove, providing a wide adjustment range suitable for blades ranging from 34 meters to 143 meters. Furthermore, with replaceable clamps of different arc radii and adjustable fastening screws, it can adapt to blade surfaces with different curvatures, ensuring stable clamping of blades of different specifications. This significantly improves the versatility of the device, reduces equipment replacement frequency, lowers procurement costs, and simplifies operation of the threaded splicing structure of the connecting rods. The device length adjustment can be completed quickly without complex tools, and clamp replacement and fastening screw adjustment can also be completed in a short time, greatly shortening equipment adaptation time and improving the turnaround efficiency of batch hoisting operations in wind farms.
[0018] 2. In this utility model, multiple supports are set on the connecting rod, and each support is connected to a clamp through a fastening screw. This can form a mechanical clamp on multiple key parts such as the root and middle of the blade. After the fastening screw is locked by the fastening bolt, the blade can be rigidly connected to the device, thereby achieving rigid fixation of the blade to the lifting platform. This multi-point rigid constraint structure can effectively resist external force interference before lifting, such as wind load and personnel operating force, and avoid the blade from pre-shaking. It eliminates the risk of violent swing caused by the accumulation of pre-shaking at the moment of lifting from the source, and improves the safety of lifting. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. 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 a wind turbine blade hoisting anti-sway fixing device proposed in this utility model;
[0021] Figure 2 A three-dimensional view of fastening bolts, brackets, fastening screws, clamps, and mating grooves;
[0022] Figure 3 for Figure 1 A partial structural diagram;
[0023] Figure 4 for Figure 3 An enlarged diagram of A in the diagram.
[0024] Legend:
[0025] 1. Connecting rod; 2. Threaded rod; 3. Threaded groove; 4. Fastening bolt; 5. Bracket; 6. Fastening screw; 7. Clamp; 8. Lifting rope; 9. Fitting groove. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0028] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A wind turbine blade hoisting anti-sway fixing device includes multiple threaded connecting rods 1, each with a threaded rod 2 and a threaded groove 3 at both ends. Adjacent connecting rods 1 are detachably connected through the cooperation of the threaded rod 2 and the threaded groove 3.
[0029] The length adjustment is achieved by combining multiple connecting rods 1. The threaded rods 2 at both ends of the connecting rods cooperate with the threaded grooves 3, so that adjacent rods can be quickly disassembled and assembled, providing a basis for adapting blades of different lengths.
[0030] Multiple brackets 5 are spaced apart on the connecting rod 1. A fastening screw 6 is threaded through the bracket 5. A clamp 7 is connected to the end of the fastening screw 6 near the blade. A matching groove 9 is opened on the surface of the bracket 5 at the position corresponding to the connecting rod 1.
[0031] Multiple brackets 5 are distributed on the connecting rod 1. The brackets 5 are fastened to the screw rod 6 by threaded connection. The clamp at the end of the screw rod directly contacts the blade. The fitting groove 9 on the surface of the bracket 5 is used to enhance the fit with the connecting rod 1 and improve the clamping stability.
[0032] The connecting rod 1 is equipped with a lifting rope 8 via a lifting ring, and the bracket 5 is also equipped with a fastening bolt 4 for locking the bracket 5.
[0033] The connecting rod 1 is connected to the lifting rope 8 via the lifting ring to achieve docking with the lifting equipment; the fastening bolts 6 on the bracket 5 are used to lock the position of the bracket 5 to prevent it from loosening during operation.
[0034] Please refer to Figure 1, Figure 2 The inner wall of the fitting groove 9 is provided with a rubber buffer layer, and the surface of the rubber buffer layer is provided with anti-slip texture.
[0035] The anti-slip texture enhances friction and prevents the bracket 5 from sliding relative to the device.
[0036] Please refer to Figure 1 , Figure 3 and Figure 4 The fitting accuracy between the threaded rod 2 and the threaded groove 3 is 6H / 6g.
[0037] The combination of internal thread groove 3 with a tolerance of 6H and external thread rod 2 with a tolerance of 6g ensures the rigidity and stability of the connection after splicing, and meets the lifting strength requirements.
[0038] Please refer to Figure 1 , Figure 2 The fixture 7 has an arc-shaped structure, and the radius of the arc can be adjusted by replacing the fixture 7 with different specifications.
[0039] The arc-shaped structure fits the curved surface of the blade, and by changing the clamps 7 with different radii, it can adapt to blade surfaces with different curvatures, thus improving the versatility of the device.
[0040] Please refer to Figure 1 , Figure 3 and Figure 4 The bracket 5 is detachably connected to the connecting rod 1, and the bracket 5 is evenly distributed along the length of the connecting rod 1.
[0041] Explanation of the flexibility and layout of bracket 5: The bracket 5 is detachable, which makes it easy to adjust the number and position according to the blade size. The evenly spaced distribution ensures uniform constraint on multiple points such as the root and middle of the blade, enhancing the rigid fixation effect.
[0042] Working principle: During use, select the appropriate number of connecting rods 1 according to the length of the blade to be hoisted, and splice them into an overall frame of the required length through the cooperation of threaded rods 2 and threaded grooves 3; replace the clamps 7 with appropriate arc radii according to the blade curvature, and install the brackets 5 at equal intervals along the connecting rods 1, and lock the position of the brackets with fastening bolts 4; adjust the fastening screws 6 on the brackets 5 to make the clamps 7 fit tightly against the blade surface, forming a multi-point rigid constraint on the root and middle of the blade; finally, connect the hoisting ropes 8 to the hoisting equipment through the lifting rings on the connecting rods 1 to complete the fixation. Through the above structure, the device can flexibly adapt to blades of different specifications, and can effectively resist external forces such as wind load and operating force before hoisting through mechanical clamping, avoiding pre-shaking of the blade and ensuring the safety and stability of the hoisting process.
[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A wind turbine blade hoisting anti-swing fixing device comprising a plurality of threadedly spliced connecting rods (1), characterized in that, The two ends of the connecting rod (1) are respectively provided with threaded rod (2) and threaded groove (3), and adjacent connecting rods (1) are detachably connected by the cooperation of threaded rod (2) and threaded groove (3); Multiple brackets (5) are spaced apart on the connecting rod (1). A fastening screw (6) is threaded through the bracket (5). A clamp (7) is connected to one end of the fastening screw (6) near the blade. A matching groove (9) is opened on the surface of the bracket (5) at the position corresponding to the connecting rod (1). The connecting rod (1) is provided with a lifting rope (8) via a lifting ring, and the bracket (5) is also provided with a fastening bolt (4) for locking the bracket (5).
2. The anti-sway fixing device for wind turbine blade hoisting according to claim 1, characterized in that, The inner wall of the fitting groove (9) is provided with a rubber buffer layer, and the surface of the rubber buffer layer is provided with anti-slip texture.
3. The anti-sway fixing device for wind turbine blade hoisting according to claim 1, characterized in that, The fitting accuracy between the threaded rod (2) and the threaded groove (3) is 6H / 6g.
4. The anti-sway fixing device for wind turbine blade hoisting according to claim 1, characterized in that, The clamp (7) has an arc-shaped structure, and the radius of the arc can be adjusted by replacing clamps (7) of different specifications.
5. The anti-sway fixing device for wind turbine blade hoisting according to claim 1, characterized in that, The bracket (5) is detachably connected to the connecting rod (1), and the bracket (5) is evenly distributed along the length direction of the connecting rod (1).