Hoisting assembly and hoisting method for wind turbine blade

Abstract

The present invention proposes a hoisting assembly and a method for hoisting a wind turbine blade. The hoisting assembly includes a sling and a protective structure. The protective structure can be adjustably locked to the sling, and the protective structure has a first surface and a second surface opposite to each other, and the protective structure is fixed to the sling with the second surface. When the hoisting assembly hoists the wind turbine blade, the middle part of the sling is wrapped around the wind turbine blade, and the two ends are hoisted to the lifting equipment. The protective structure is cushioned on the blade surface adjacent to the attachment with the first surface, so that the part of the sling fixed to the protective structure is separated from the blade surface. Through the above design, the present invention can avoid the risk of structural interference between the sling or other parts of the hoisting assembly and the attachment of the wind turbine blade during the process of hoisting the generator, thereby protecting the attachment from collision damage during the hoisting process.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting devices and hoisting methods for wind power equipment, and in particular to a hoisting assembly and a hoisting method for wind power blades. Background Art

[0002] Wind turbine blades are usually equipped with accessories, which are components additionally installed on wind turbine blades, such as vortex generators, spoilers, serrations, spoiler strips, etc. During demoulding, transportation, and hoisting, the existing hoisting methods for wind turbine blades are usually divided into single-point hoisting and two-point hoisting.

[0003] like Figure 1 As shown, it representatively shows the hoisting positions of wind turbine blades in single-point hoisting and two-point hoisting of existing wind turbine blade hoisting methods. Among them, the single-point hoisting uses a lifting beam tool to hoist the hoisting point position B at a certain distance on both sides of the center of gravity of the wind turbine blade, and the two-point hoisting method hoists the hoisting point position A and the hoisting point position C at the root of the wind turbine blade respectively.

[0004] However, regardless of single-point lifting or two-point lifting, during the process of lifting the wind turbine blades, there is interference between the sling and the accessories in the lifting point area where the accessories are installed, and there is a risk of damaging the accessories during the lifting process. Summary of the invention

[0005] A main purpose of the present invention is to overcome at least one of the above-mentioned defects of the prior art and to provide a hoisting assembly that can avoid structural interference with the accessories of the wind turbine blade during the hoisting process.

[0006] Another main purpose of the present invention is to overcome at least one of the above-mentioned defects of the prior art and provide a method for hoisting a wind turbine blade.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] According to one aspect of the present invention, there is provided a lifting assembly for lifting a wind turbine blade, wherein the blade surface of the wind turbine blade has an attachment. The lifting assembly includes a lifting strap and a protective structure. The protective structure can be adjustably locked to the lifting strap, and the protective structure has a first surface and a second surface opposite to each other, and the protective structure is fixed to the lifting strap with the second surface. When the lifting assembly lifts the wind turbine blade, the middle part of the lifting strap is wrapped around the wind turbine blade, and the two ends are lifted on the lifting equipment, and the protective structure is cushioned with the first surface on the surface of the blade adjacent to the attachment, so that the part of the lifting strap fixed to the protective structure is separated from the surface of the blade.

[0009] According to one embodiment of the present invention, a hinge is disposed on the first surface of the protection structure, and the hinge is configured to be deformable according to the shape of the blade surface so that the first surface of the protection structure fits the blade surface.

[0010] According to one embodiment of the present invention, the protective structure is a cushion block, and the cushion block is adjustably locked to the sling via a limit clip.

[0011] According to one embodiment of the present invention, the limit card has a connecting section and limit sections respectively connected to both ends of the connecting section; the sling is provided with a buckle structure, and the limit card is rotatably inserted into the buckle structure with the connecting section. The second surface of the cushion block is provided with a pair of limit holes, and the two limit holes in the same pair are respectively located on both sides of the sling when the cushion block is fixed to the sling, and the two limit sections of the limit card are respectively inserted into the two limit holes in the same pair.

[0012] According to one embodiment of the present invention, one end of the limiting hole away from the second surface of the cushion block has a bending channel, and the end of the limiting section of the limiting card has a bending structure, and when the limiting section is inserted into the limiting hole, the bending structure is inserted into the bending channel of the limiting hole.

[0013] According to one embodiment of the present invention, the sling has a third surface and a fourth surface opposite to each other, and when the hoisting assembly slings the wind turbine blade, the sling is fixed to the second surface of the cushion block by the third surface. A limiting belt is provided on the fourth surface of the sling, and the limiting belt has an arched portion arched relative to the sling, and the arched portion and the corresponding portion of the sling together form the buckle structure.

[0014] According to one embodiment of the present invention, the second surface of the cushion block is provided with two pairs of positioning holes, and the two pairs of limiting holes are spaced apart along the extension direction of the sling when the cushion block is fixed to the sling. The limiting belt has two arched portions, and the two arched portions are spaced apart along the extension direction of the sling to form two buckle structures. The lifting assembly includes two limiting cards, and the two limiting cards are respectively arranged between the two buckle structures and the two pairs of limiting holes.

[0015] According to one embodiment of the present invention, the second surface of the cushion block has two ends, which are spaced apart along the extension direction of the sling when the cushion block is fixed to the sling. The two ends of the second surface of the cushion block respectively have inclined surfaces inclined toward the first surface.

[0016] According to one embodiment of the present invention, the cross-section of the cushion block is square, rectangular or wedge-shaped.

[0017] According to one embodiment of the present invention, the protective structure is a protective washer, which is an annular structure and has an escape portion. When the hoisting assembly hoists the wind turbine blade, the protective washer is sleeved on the outer periphery of the wind turbine blade, the escape portion is arched relative to the blade surface, and the escape portion corresponds to the position of the accessory.

[0018] According to another aspect of the present invention, a method for hoisting a wind turbine blade is provided. The method for hoisting a wind turbine blade comprises the following steps:

[0019] A lifting assembly is provided, the lifting assembly comprising a lifting belt and a protective structure, the protective structure is adjustably locked to the lifting belt, the protective structure has a first surface and a second surface opposite to each other, and the protective structure is fixed to the lifting belt by the second surface;

[0020] By using the middle part of the sling to be wound around the wind turbine blade and the two ends to be hoisted on the hoisting equipment, the protection structure is placed with the first surface on the surface of the blade adjacent to the attachment, so that the part of the sling fixed to the protection structure is separated from the surface of the blade; and

[0021] The wind turbine blade is hoisted by using the hoisting equipment via the hoisting assembly.

[0022] It can be seen from the above technical solutions that the advantages and positive effects of the hoisting assembly and the hoisting method of the wind turbine blade proposed in the present invention are:

[0023] The lifting assembly proposed in the present invention includes a lifting belt and a protective structure. The protective structure can be adjustably locked to the lifting belt, and the protective structure has a first surface and a second surface opposite to each other, and the protective structure is fixed to the lifting belt by the second surface. When the lifting assembly lifts the wind turbine blade, the middle part of the lifting belt is wrapped around the wind turbine blade, and the two ends are lifted on the lifting equipment. The protective structure is cushioned on the blade surface adjacent to the attachment with the first surface, so that the part of the lifting belt fixed to the protective structure is separated from the blade surface. Through the above design, the present invention can avoid the risk of structural interference between the lifting belt or other parts of the lifting assembly and the attachment of the wind turbine blade during the process of lifting the generator, thereby protecting the attachment from collision damage during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always refer to the same or similar parts. Among them:

[0025] Figure 1It is a schematic diagram of the hoisting positions of single-point hoisting and two-point hoisting during the existing wind turbine blade hoisting;

[0026] Figure 2 is a perspective view of a hanging assembly according to an exemplary embodiment;

[0027] Figure 3 Figure 2 A three-dimensional diagram of the hoisting assembly being hoisted on a wind turbine blade;

[0028] Figure 4 yes Figure 3 Side view of

[0029] Figure 5 yes Figure 4 A partial enlarged view of

[0030] Figure 6 is a side view of a hoisting assembly hoisted on a wind turbine blade according to another exemplary embodiment;

[0031] Figure 7 is a perspective view showing a hoisting assembly hoisted on a wind turbine blade according to yet another exemplary embodiment.

[0032] The following are the descriptions of the reference numerals:

[0033] 100. Wind turbine blades;

[0034] 101. Attachments;

[0035] 210. Suspenders;

[0036] 211. Third surface;

[0037] 212. Fourth surface;

[0038] 213. Limiting belt;

[0039] 2131. Arch;

[0040] 220. Pads;

[0041] 221. First surface;

[0042] 222. Second surface;

[0043] 2221. Incline;

[0044] 223. Limiting hole;

[0045] 224. Limit card;

[0046] 2241. Connecting segment;

[0047] 225. Avoid space;

[0048] 230. Protective gasket;

[0049] 231. Second surface;

[0050] 232. Leave space. DETAILED DESCRIPTION

[0051] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and drawings therein are essentially for illustrative purposes rather than for limiting the present invention.

[0052] In the following description of different exemplary embodiments of the present invention, reference is made to the accompanying drawings, which form a part of the present invention and in which different exemplary structures, systems and steps that can implement multiple aspects of the present invention are shown by way of example. It should be understood that other specific schemes of components, structures, exemplary devices, systems and steps can be used, and structural and functional modifications can be made without departing from the scope of the present invention. Moreover, although the terms "above", "between", "within", etc. may be used in this specification to describe different exemplary features and elements of the present invention, these terms are used herein only for convenience, such as according to the direction of the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the present invention.

[0053] See also Figure 2 , which representatively shows a stereoscopic view of the hoisting assembly proposed in the present invention when it is hoisted on a wind turbine blade 100. In this exemplary embodiment, the hoisting assembly proposed in the present invention is described by taking the application of hoisting a wind turbine blade 100, especially a wind turbine blade 100 having an attachment 101 on the blade surface as an example. It is easy for those skilled in the art to understand that in order to apply the relevant design of the present invention to other types of hoisting equipment, various modifications, additions, substitutions, deletions or other changes are made to the specific embodiments described below, and these changes are still within the scope of the principle of the hoisting assembly proposed in the present invention.

[0054] like Figure 2 As shown, in this embodiment, the lifting assembly proposed by the present invention mainly includes a lifting belt 210 and a protective structure. Figures 3 to 5 , Figure 3 A three-dimensional diagram of a hoisting assembly hoisted on a wind turbine blade 100 is representatively shown; Figure 4 Representatively shown in Figure 3 Side view of Figure 5 The following is a detailed description of the structure, connection mode and functional relationship of the main components of the lifting assembly proposed by the present invention in combination with the above-mentioned drawings.

[0055] like Figures 2 to 5 As shown, in this embodiment, the sling 210 can be an existing strip-shaped fiber sling 210 used in the transportation or hoisting process of the wind turbine blade 100. The protective structure is adjustably locked to the sling 210, and the protective structure has a first surface 221 and a second surface 222 opposite to each other. The protective structure is in contact with the blade surface of the wind turbine blade 100 when the wind turbine blade 100 is hoisted by the first surface 221, and is fixed to the sling 210 by the second surface 222. When the hoisting assembly hoists the wind turbine blade 100, the middle part of the sling 210 is wound around the wind turbine blade 100, and the two ends of the sling 210 are hoisted on the hoisting equipment (such as a crane or other hoisting equipment), so that the hoisting equipment can hoist the wind turbine blade 100 through the sling 210 of the hoisting assembly. The protective structure is padded with a first surface 221 on the blade surface of the wind turbine blade 100 adjacent to the attachment 101, so that the portion of the sling 210 fixed to the protective structure and the adjacent portion can be separated from the blade surface during the hoisting process, thereby forming an escape space 225 for escaping the attachment 101. Through the above design, the present invention can avoid the risk of structural interference between the sling 210 or other parts of the hoisting assembly and the attachment 101 on the blade surface of the wind turbine blade during the hoisting process of the wind turbine blade 100, thereby protecting the attachment 101 from collision damage during the hoisting process.

[0056] Preferably, in this embodiment, the first surface 221 of the protection structure may be provided with a hinge, which can be deformed according to the shape of the blade surface of the wind turbine blade 100, thereby optimizing the fit between the first surface 221 of the protection structure and the blade surface.

[0057] Preferably, if Figure 2 As shown, in this embodiment, the protective structure can be preferably a cushion block 220, and the cushion block 220 can be preferably adjustably locked to the sling 210 through a limit card 224. In other embodiments, the cushion block 220 can also be fixed to the sling 210 through other positioning structures, which is not limited to this embodiment.

[0058] Furthermore, if Figure 2As shown, based on the design that the pad 220 is fixed to the sling 210 through the limiting card 224, in this embodiment, the limiting card 224 can preferably have a connecting section 2241 and two limiting sections. Specifically, the connecting section 2241 of the limiting card 224 is roughly in a U-shaped structure, and the two limiting sections are respectively connected to the two ends of the connecting section 2241, and the two limiting sections are bent and extended relative to the plane where the connecting section 2241 of the U-shaped structure is located. Among them, the sling 210 is provided with a buckle structure, and the limiting card 224 can be rotatably inserted into the buckle structure through its connecting section 2241, so that the limiting card 224 is connected to the sling 210 through the buckle structure. In addition, the second surface 222 of the pad 220 is provided with a pair of limiting holes 223, and the limiting holes 223 can be one pair, two pairs or more than two pairs, and the two limiting holes 223 of the same pair are respectively located on both sides of the sling 210 when the pad 220 is fixed to the sling 210. Each pair of limiting holes 223 is matched with a limiting card 224 , and two limiting sections of the limiting card 224 are respectively inserted into the two limiting holes 223 in the same pair.

[0059] Furthermore, based on the design that the limiting section of the limiting card 224 is inserted into the limiting hole 223, in the present embodiment, one end of the second surface 222 of the limiting hole 223 away from the pad 220 has a bent channel, that is, the center line of the bent channel has an angle in space relative to the center line of the main channel of the limiting hole 223, such as 80°, 90°, 120°, etc., and the end of the limiting section of the limiting card 224 has a bending structure, that is, the bending structure has an angle in space relative to the main body of the limiting section of the limiting card 224, and the angle can be the same as or similar to the angle in space between the center line of the bending channel and the center line of the main channel of the limiting hole 223. Accordingly, when the limiting card 224 is inserted into the limiting hole 223 through its limiting section, the bending structure of the limiting section can be inserted into the bending channel of the limiting hole 223, further optimizing the positioning effect of the limiting card 224 on the sling 210 and the cushion block 220.

[0060] Furthermore, if Figure 2As shown, based on the design of the buckle structure of the limit card 224 passing through the sling 210, in this embodiment, the sling 210 has a third surface 211 and a fourth surface 212 opposite to each other. When the wind turbine blade 100 is hoisted by the hoisting assembly proposed by the present invention, the sling 210 is fixed on the second surface 222 of the cushion block 220 by its third surface 211. Among them, the fourth surface 212 of the sling 210 is provided with a limit belt 213, and the limit belt 213 can be a continuous belt structure with an extension direction substantially the same as the extension direction of the limit belt 213, and the limit belt 213 can also be a one-segment or discontinuous multi-segment belt structure. Among them, the limit belt 213 has an arched portion 2131 arched relative to the sling 210, and the other parts of the limit belt 213 are fixedly connected to the sling 210, and the arched portion 2131 of the limit belt 213 and the corresponding part of the sling 210 together form the above-mentioned buckle structure. In other embodiments, other structures or connection methods may be used to set a buckle structure on the sling 210, and the buckle structure may also be replaced by other structures, such as a snap-on structure, etc., which are not limited to this embodiment.

[0061] Furthermore, if Figure 2 As shown, based on the design of setting the limiting belt 213 on the sling 210, in this embodiment, two pairs of positioning holes can be preferably opened on the second surface 222 of the cushion block 220, and the two pairs of limiting holes 223 are spaced apart along the extension direction of the sling 210 when the cushion block 220 is fixed to the sling 210. On this basis, the limiting belt 213 can preferably have two arched portions 2131 corresponding to the cushion block 220, and the two arched portions 2131 can be spaced apart along the extension direction of the sling 210, thereby forming two buckle structures corresponding to the two pairs of positioning holes respectively, so that the cushion block 220 and the sling 210 can be positioned by two limiting cards 224. That is, the lifting assembly can preferably include two limiting cards 224, and the two limiting cards 224 are respectively arranged between the two buckle structures and the two pairs of limiting holes 223. In other embodiments, the hanging assembly may also include only one set of positioning structures consisting of a buckle structure, a limiting hole 223 and a limiting card 224, and of course may include more than two sets, which are not limited to the two sets in the present embodiment.

[0062] Furthermore, based on the design of two pairs of positioning holes on the second surface 222 of the cushion block 220, and based on the design of two positioning blocks of the same pair being spaced apart along the extension direction of the sling 210, in this embodiment, two connecting channels can be preferably opened inside the cushion block 220, each connecting channel is connected to two limiting holes 223 of different pairs but located on the same side of the sling 210, and the center line of each connecting channel has an angle with the center lines of the two limiting holes 223 connected thereto, such as 80°, 90°, 120°, etc. On this basis, the bending structure at the end of the limiting section of the limiting card 224 can be inserted into the connecting channel.

[0063] Furthermore, if Figure 2 and Figure 5 As shown, based on the design of the protective structure as a cushion block 220, in this embodiment, the second surface 222 of the cushion block 220 has two ends, and when the cushion block 220 is fixed to the sling 210, the two ends of the cushion block 220 are spaced apart along the extension direction of the sling 210. On this basis, the two ends of the second surface 222 of the cushion block 220 can respectively have inclined surfaces 2221 inclined toward the first surface 221.

[0064] Furthermore, if Figure 2 As shown, based on the design that the second surface 222 of the cushion block 220 has the inclined surface 2221, and based on the design that the second surface 222 of the cushion block 220 has the limiting hole 223, in this embodiment, the limiting hole 223 can be formed on the portion of the second surface 222 of the cushion block 220 where the inclined surface 2221 is not formed. In other embodiments, the limiting hole 223 can also be formed on the inclined surface 2221 of the second surface 222 of the cushion block 220, which is not limited to this embodiment.

[0065] Furthermore, if Figures 2 to 5 As shown, based on the design of the protective structure as a cushion block 220, in this embodiment, the cross section of the cushion block 220 can preferably be approximately square (the two inclined surfaces 2221 of the second surface 222 of the cushion block 220 are ignored in this embodiment). In other embodiments, the cross section of the cushion block 220 can also adopt other shapes, such as a rectangle, a wedge (such as Figure 6 ) etc., but is not limited to this implementation manner.

[0066] In addition, it should be noted that in other embodiments, the length, width, thickness, cross-sectional shape, shape or inclination angle of the inclined surface 2221 of the pad 220 can be determined according to the size and position of the accessory 101, that is, according to the shape or size of the avoidance space 225 required to avoid the accessory 101, to determine the thickness of the pad 220, the contact area between the pad 220 and the blade surface or other structural features of the pad 220.

[0067] For example, assuming that the total weight of a wind turbine blade 100 is 17.8 tons, and the weight of the lifting at the L13.6m lifting point is 8.9 tons. The stress state of the pad 220 during the lifting process is as follows: Figure 5 As shown, under the premise of ignoring the friction between the sling 210 and the trailing edge of the wind turbine blade 100 and the friction between the sling and the pad 220, it can be obtained that T1 = T2 = 4.45t·9.81 = 43.65kN, and the extrusion force on the pad 220 is: F = T1·cos(α1)+T2·cos(α2)=29.40kN. Considering the safety factor of 1.5 times, it can be calculated that the extrusion load on the pad 220 is 44kN. In order to prevent the sling 210 from damaging the accessory 101 after the pad 220 is deformed, the allowable deformation of the thickness of the pad 220 is approximately 60mm.

[0068] Related References Figure 7 , which representatively shows a three-dimensional diagram of a hoisting assembly in another embodiment of the present invention when it is hoisted on a wind turbine blade 100. In this embodiment, the protective structure may adopt a protective gasket 230. Specifically, the protective gasket 230 may be roughly annular and have an escape portion. When the hoisting assembly proposed in the present invention hoists the wind turbine blade 100, the protective gasket 230 is sleeved on the outer periphery of the wind turbine blade 100, and the escape portion of the protective gasket 230 is arched relative to the blade surface of the wind turbine blade 100, and the escape portion corresponds to the position of the attachment 101, so that an escape space 232 is formed in the attachment 101 and its adjacent area by using the escape portion. According to the structure of the attachment 101 or other requirements, the shape and position of the escape portion of the protective gasket 230 can be flexibly adjusted accordingly.

[0069] It should be noted that the suspension assemblies shown in the drawings and described in this specification are only a few examples of the many types of suspension assemblies that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details of the suspension assemblies shown in the drawings or described in this specification or any components of the suspension assemblies.

[0070] Based on the above exemplary description of the hoisting assembly proposed in the present invention, an exemplary implementation of the hoisting method of the wind turbine blade proposed in the present invention is described below. The hoisting method of the wind turbine blade proposed in the present invention may at least include the following steps:

[0071] A lifting assembly is provided, the lifting assembly comprising a lifting belt and a protective structure, the protective structure is adjustably locked to the lifting belt, the protective structure has a first surface and a second surface opposite to each other, and the protective structure is fixed to the lifting belt by the second surface;

[0072] The middle part of the sling is wound around the wind turbine blade, and the two ends of the sling are hoisted on the lifting equipment. The installation position of the protection structure is estimated according to the position of the accessory on the blade surface of the wind turbine blade. The protection structure is placed on the blade surface adjacent to the accessory with the first surface, so that the part of the sling fixed to the protection structure is separated from the blade surface, thereby forming an escape space for avoiding the accessory; and

[0073] The wind turbine blades are hoisted by hoisting equipment via hoisting components.

[0074] Specifically, in this embodiment, when lifting the wind turbine blade, the leading edge of the wind turbine blade is generally facing downward, the middle part of the sling is passed around the leading edge, and the two ends of the sling are connected to the hook of the crane. When the sling is passed around the wind turbine blade, the sling is gradually tightened from the top, and the sling is kept unloaded during the tightening process. A certain gap is maintained between the sling and the leading edge so that the protective structure added later can move freely. In order to avoid interference between the accessories and the sling and to prevent the sling from damaging the accessories, a protective structure such as a pad is placed between the sling and the position of the wind turbine blade adjacent to its accessories, the pad is adjusted to the target position, and the sling is tightened continuously until the pad is pressed by the sling and does not slide, thereby forming an avoidance space, and the sling is lifted away from the blade surface of the wind turbine blade to avoid structural interference caused by contact between the sling and the accessories.

[0075] It should be noted that the methods for assembling wind turbine blades shown in the drawings and described in this specification are only a few examples of many assembling methods that can adopt the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details or any steps of the methods for assembling wind turbine blades shown in the drawings or described in this specification.

[0076] In summary, the lifting assembly proposed in the present invention includes a lifting belt and a protective structure. The protective structure can be adjustably locked to the lifting belt, and the protective structure has a first surface and a second surface opposite to each other, and the protective structure is fixed to the lifting belt by the second surface. When the lifting assembly lifts the wind turbine blade, the middle part of the lifting belt is wrapped around the wind turbine blade, and the two ends are lifted on the lifting equipment. The protective structure is cushioned on the blade surface adjacent to the accessory with the first surface, so that the part of the lifting belt fixed to the protective structure is separated from the blade surface. Through the above design, the present invention can avoid the risk of structural interference between the lifting belt or other parts of the lifting assembly and the accessories of the wind turbine blade during the process of lifting the wind turbine blade, thereby protecting the accessories from collision damage during the lifting process.

[0077] The exemplary embodiments of the hoisting assembly and the hoisting method of the wind turbine blade proposed by the present invention are described and / or illustrated in detail above. However, the embodiments of the present invention are not limited to the specific embodiments described here. On the contrary, the components and / or steps of each embodiment can be used independently and separately from other components and / or steps described here. Each component and / or each step of an embodiment can also be used in combination with other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated here, the terms "one", "an" and "above" are used to indicate the presence of one or more elements / components / etc. The terms "comprising", "including" and "having" are used to express the meaning of open inclusion and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc. In addition, the terms "first" and "second" in the claims and the specification are used only as marks and are not numerical restrictions on their objects.

[0078] Although the hoisting assembly and the method for hoisting a wind turbine blade proposed in the present invention have been described according to different specific embodiments, those skilled in the art will recognize that the implementation of the present invention may be modified within the spirit and scope of the claims.

Claims

1. A hoisting assembly for hoisting a wind turbine blade, wherein the blade surface of the wind turbine blade has an attachment, characterized in that: The hoisting assembly comprises: A sling having two buckle structures; and A protective structure, adjustably locked to the sling, the protective structure having a first surface and a second surface opposite to each other, the protective structure being fixed to the sling via the second surface, the second surface of the protective structure being provided with two pairs of limiting holes, the two limiting holes of the same pair being respectively located on both sides of the sling when the protective structure is fixed to the sling, and the two pairs of limiting holes being spaced apart along the extension direction of the sling when the protective structure is fixed to the sling; Two limit cards, the two limit cards are respectively arranged between the two buckle structures and the two pairs of limit holes; Among them, when the lifting assembly lifts the wind turbine blade, the middle part of the sling is wrapped around the wind turbine blade, and the two ends are lifted on the lifting equipment, and the protective structure is padded with the first surface on the surface of the blade adjacent to the accessory, so that the part of the sling fixed to the protective structure is separated from the blade surface, and the first surface of the protective structure is provided with a hinge, and the hinge is configured to be able to deform according to the shape of the blade surface so that the first surface of the protective structure fits the blade surface.

2. The hoisting assembly according to claim 1, characterized in that: The protective structure is a cushion block, and the cushion block is adjustably locked to the sling through a limit card.

3. The hoisting assembly according to claim 2, characterized in that: The limit card has a connecting section and limit sections respectively connected to both ends of the connecting section. The limit card is rotatably inserted into the buckle structure with the connecting section, and the two limit sections of the limit card are respectively inserted into the two limit holes in the same pair.

4. The hoisting assembly according to claim 3, characterized in that: One end of the limiting hole away from the second surface of the cushion block has a bending channel, and the end of the limiting section of the limiting card has a bending structure. When the limiting section is inserted into the limiting hole, the bending structure is inserted into the bending channel of the limiting hole.

5. The hoisting assembly according to claim 3, characterized in that: The sling has a third surface and a fourth surface in opposite directions. When the hoisting assembly hoists the wind turbine blade, the sling is fixed to the second surface of the cushion block by the third surface. A limiting belt is provided on the fourth surface of the sling. The limiting belt has two arched portions that are arched relative to the sling. The two arched portions are spaced apart along the extension direction of the sling. The arched portions and the corresponding portions of the sling together form the buckle structure.

6. The hoisting assembly according to claim 2, characterized in that: The second surface of the cushion block has two ends, which are spaced apart along the extension direction of the sling when the cushion block is fixed to the sling; wherein the two ends of the second surface of the cushion block respectively have inclined surfaces inclined toward the first surface.

7. The hoisting assembly according to claim 2, characterized in that: The cross section of the cushion block is square, rectangular or wedge-shaped.

8. The hoisting assembly according to claim 1, characterized in that: The protective structure is a protective gasket, which is an annular structure and has an avoidance portion. When the hoisting assembly hoists the wind turbine blade, the protective gasket is sleeved on the outer periphery of the wind turbine blade, the avoidance portion is arched relative to the blade surface, and the avoidance portion corresponds to the position of the accessory.

9. A method for hoisting a wind turbine blade, implemented based on the hoisting assembly according to any one of claims 1 to 8, characterized in that: The following steps are involved: A lifting assembly is provided, the lifting assembly comprising a lifting belt and a protective structure, the protective structure is adjustably locked to the lifting belt, the protective structure has a first surface and a second surface opposite to each other, and the protective structure is fixed to the lifting belt by the second surface; The middle part of the sling is wound around the wind turbine blade, and both ends are hoisted on the hoisting equipment, and the protection structure is placed with the first surface on the surface of the blade adjacent to the attachment, so that the part of the sling fixed to the protection structure is separated from the surface of the blade; as well as The wind turbine blade is hoisted by using the hoisting equipment via the hoisting assembly.

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