Lifting and supporting structure in wind power blade transportation

Abstract

The invention relates to the technical field of wind power blades, in particular to a lifting and supporting structure for wind power blade transportation, which comprises a first base plate and a second base plate which are respectively arranged on two sides of a blade, the at least two clamps are positioned between the blade and the two substrates; the locking mechanism is arranged on the two substrates and acts on the clamp; the driving mechanism is arranged on the first base plate and the second base plate and is used for driving the first base plate and the second base plate to carry out relative movement along with the clamp; the moving mechanism is arranged on the driving mechanism, so that the driving mechanism drives the blades of the clamps on the two substrates to move; through the clamp, under the action of the locking mechanism, the driving mechanism and the moving mechanism, the whole device plays a role in lifting and supporting the blades in the transportation process, precise butt joint and stable fixing of the blades are achieved, and the blades are evenly stressed and convenient to transport.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine blades, and particularly to a lifting and supporting structure for transporting wind turbine blades. Background Art

[0002] Currently, when it is necessary to transfer a wind turbine blade onto a transport vehicle, people usually use a crane to lift the wind turbine blade. Lifting the wind turbine blade by the crane and installing it on the transport vehicle is a highly technical operation, and there are the following main operational difficulties:

[0003] 1. The size of the wind turbine blade is usually very large and the shape is irregular. Therefore, it is necessary to ensure that the crane can accurately suspend the blade in the air and align it with the installation point on the transport vehicle.

[0004] 2. Aligning the position and angle of the wind turbine blade in the air requires excellent crane operation skills and the assistance of ground staff.

[0005] When the wind turbine blade is transferred onto the transport vehicle, it requires highly technical and collaborative operations. Any problem may cause the transfer to fail or a safety accident, and it is impossible to quickly and conveniently cooperate with the crane to transfer and install the wind turbine blade. Summary of the Invention

[0006] In view of the above existing problems that when the wind turbine blade is transferred onto the transport vehicle, it requires highly technical and collaborative operations. Any problem may cause the transfer to fail or a safety accident, and it is impossible to quickly and conveniently cooperate with the crane to transfer and install the wind turbine blade, the present invention is proposed.

[0007] Therefore, the object of the present invention is to provide a lifting and supporting structure for transporting wind turbine blades.

[0008] To solve the above technical problems, the present invention provides the following technical solution: A lifting and supporting structure for transporting wind turbine blades, comprising,

[0009] A first substrate and a second substrate respectively arranged on both sides of the blade;

[0010] At least two clamps located between the blade and the two substrates;

[0011] A locking mechanism arranged on the two substrates and acting on the clamps;

[0012] By controlling the expansion or closing of the clamps through the locking mechanism, the clamping and fixing of the blade are realized.

[0013] As a preferred solution of the lifting and supporting structure for transporting wind turbine blades of the present invention, wherein: The clamp includes a fixed arc plate arranged on the first substrate and the second substrate, a movable plate I arranged on the fixed arc plate, and a movable plate II arranged on the movable plate I.

[0014] As a preferred embodiment of the lifting and supporting structure for transporting wind turbine blades in the present invention, wherein: a rubber pad is provided on the inner wall surface of the clamp, and the rubber pad supports the clamp, so that the clamp and the rubber pad are in an arc-expanded state.

[0015] As a preferred embodiment of the lifting and supporting structure for transporting wind turbine blades in the present invention, wherein: the opposite side surfaces of the first substrate and the second substrate are arc-shaped surfaces.

[0016] As a preferred embodiment of the lifting and supporting structure for transporting wind turbine blades in the present invention, wherein: the locking mechanism includes triangular plates fixedly connected to the two substrates. The triangular plates are arranged in pairs, and a plurality of sets of extrusion columns are rotatably installed between the triangular plates, and a handwheel is provided on the extrusion column.

[0017] As a preferred embodiment of the lifting and supporting structure for transporting wind turbine blades in the present invention, wherein: it further includes

[0018] a driving mechanism, arranged on the first substrate and the second substrate, for driving the first substrate and the second substrate to move relatively with the clamp; and

[0019] a moving mechanism, arranged on the driving mechanism, so that the driving mechanism drives the clamps on the two substrates to move towards the blade.

[0020] As a preferred embodiment of the lifting and supporting structure for transporting wind turbine blades in the present invention, wherein: the driving mechanism includes a connecting sleeve and a shaft sleeve arranged on the first substrate and the second substrate, and connecting sleeves are respectively provided on both sides of the shaft sleeve.

[0021] As a preferred embodiment of the lifting and supporting structure for transporting wind turbine blades in the present invention, wherein: the driving mechanism includes a fixed rod arranged on the connecting sleeve, a support frame for supporting the fixed rod, and a cylinder connected to the shaft sleeve through the support frame.

[0022] As a preferred embodiment of the lifting and supporting structure for transporting wind turbine blades in the present invention, wherein: the moving mechanism includes a bracket arranged on the support frame, rollers arranged on the bracket, and connecting ears arranged on the support frame.

[0023] As a preferred embodiment of the lifting and supporting structure for transporting wind turbine blades in the present invention, wherein: the moving mechanism includes a bracket arranged on the support frame, rollers arranged on the bracket, and connecting ears arranged on the support frame.

[0024] Advantages of the present invention: Under the action of the fixture, the locking mechanism, the driving mechanism, and the moving mechanism, the entire device plays a role in lifting and supporting the blade during transportation, achieving precise docking and stable fixation of the blade, and enabling the blade to be evenly stressed for easy transportation.

[0025] (1) Precise docking: Through the cooperation of the support frame and the locking mechanism, the blade flange at the root of the wind turbine blade is precisely docked with the positioning flange on the transport vehicle, improving the transfer efficiency of the wind turbine blade.

[0026] (2) Stable fixation: The rubber pad on the inner wall of the fixture provides buffering and fills the gaps, ensuring the stability of the blade and avoiding loosening problems. The large contact surface between the circular sleeve composed of two groups of arc-shaped fixtures and the blade further improves the stability during fixation.

[0027] (3) Even stress: The cooperation of multiple groups of extrusion columns and the arc-shaped fixtures can evenly apply clamping force to multiple parts of the outer surface of the blade, ensuring that the blade is evenly stressed during the clamping and transfer process, and improving its stability and safety. Description of the drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a schematic three-dimensional structure diagram of the overall lifting and supporting structure during the transportation of wind turbine blades.

[0030] Figure 2 It is a schematic diagram of the disassembly of the fixture structure of the lifting and supporting structure during the transportation of wind turbine blades.

[0031] Figure 3 It is a schematic diagram of the locking mechanism structure of the lifting and supporting structure during the transportation of wind turbine blades.

[0032] Figure 4 It is a schematic diagram of the driving mechanism and the moving mechanism structure of the lifting and supporting structure during the transportation of wind turbine blades.

[0033] Figure 5 It is a schematic diagram of the roller structure of the lifting and supporting structure during the transportation of wind turbine blades.

[0034] Reference numerals: 1, first substrate; 2, second substrate; 3, clamp; 31, fixed arc plate; 32, first movable arc plate; 33, second movable arc plate; 34, rubber pad; 4, locking mechanism; 41, triangular plate; 42, extrusion column; 43, handwheel; 5, driving mechanism; 51, connecting sleeve; 52, bushing; 53, fixed rod; 54, support frame; 55, cylinder; 6, moving mechanism; 61, bracket; 62, roller; 621, frame body; 622, outer inclined groove; 623, inner inclined groove; 624, rolling body; 63, connecting ear. Detailed implementation manners

[0035] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be made in conjunction with the accompanying drawings of the specification.

[0036] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0037] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that may be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not all refer to the same embodiment, nor is it an embodiment that is separate from or selectively exclusive of other embodiments.

[0038] Furthermore, the present invention will be described in detail in conjunction with the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the protection scope of the present invention here. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0039] Embodiment 1

[0040] Referring to Figure 1 - Figure 3 , which is the first embodiment of the present invention, provides a lifting and supporting structure for transporting wind turbine blades. This device includes a first substrate 1 and a second substrate 2 respectively arranged on both sides of the blade; at least two clamps 3 located between the blade and the two substrates; a locking mechanism 4 arranged on the two substrates and acting on the clamp 3; by controlling the expansion or closing of the clamp 3 through the locking mechanism 4, the clamping and fixing of the blade are realized. The clamp 3 arranged on the blade drives the clamping and fixing work of the clamp 3 on the blade through the locking mechanism 4 acting on the two substrates.

[0041] Specifically, the fixture 3 is respectively connected to the first substrate 1 and the second substrate 2, facilitating clamping on both sides of the blade. The fixture 3 includes fixed arc plates 31 provided on the first substrate 1 and the second substrate 2. The fixed arc plates 31 are fixedly connected to the first substrate 1 or the second substrate 2. The fixed arc plates 31 have a certain curvature. An active plate one is arranged on the fixed arc plates 31, and an active plate two is arranged on the active plate one. The setting of the fixture 3 is mainly based on the structural characteristics of the wind turbine blade itself and transportation requirements. The root part of the wind turbine blade is the key part connecting it to the wind turbine generator set and has a specific arc-shaped profile. The fixture 3 is composed of a fixed plate, an active plate one, and an active plate two spliced together to form an arc-shaped structure. This design can closely fit the arc-shaped profile of the root of the wind turbine blade, ensuring a large contact area between the fixture 3 and the blade, thereby providing a more stable clamping force;

[0042] Furthermore, a rubber pad 34 is arranged on the inner wall surface of the fixture 3. The rubber pad 34 plays a supporting role for the fixture 3, making the fixture 3 and the rubber pad 34 in an arc-expanded state. The rubber pad 34 with elastic characteristics is fixedly pasted on the inner wall surface of the arc-shaped structure formed by the mutual splicing of the fixed plate, the active plate one, and the active plate two of the fixture 3. The rubber pad 34 is an arc-shaped structure with a structure adapted to the structure of the fixture 3. Through the self-elastic force of the rubber pad 34, it plays a supporting role for the arc-shaped fixture 3, making the fixture 3 and the rubber pad 34 in an arc-expanded state;

[0043] Among them, the fixture 3 is composed of a fixed arc plate 31, an active plate one, and an arc-shaped plate two, and can be closed inward to form a circular sleeve, which can adapt to the roots of wind turbine blades of different sizes. However, the size of the entire arc plate is fixed, with poor flexibility; and when installing the combined arc-shaped fixture 3, it can be operated step by step. First, make the two substrates bring the fixed arc plate of the fixture 3 close to the root of the wind turbine blade, and then control the closing of the active arc plate, which is more convenient to operate. The entire arc plate needs to be accurately sleeved on the root at one time, with a large installation difficulty; moreover, the fixture 3 is assembled by multiple modules and is convenient to adjust the clamping force through the locking mechanism 4, and it is convenient to replace some components when damaged. If there is a problem with the entire arc plate, it is more difficult to repair or adjust.

[0044] Still further, the opposite side surfaces of the first substrate 1 and the second substrate 2 are arc-shaped surfaces, which are adapted to the fixed plate, facilitating the fixed installation of the fixed plate on the first substrate 1 and the second substrate 2;

[0045] Among them, the fixture 3 is arranged on the outer surface of the root of the wind power blade, controlling the first movable plate and the second movable plate to close inward, so that the two sets of arc-shaped fixtures 3 form a circular sleeve. The root of the wind power blade is tightly fixed by the circular sleeve formed by the two sets of arc-shaped fixtures 3. It contacts the root through the rubber pad 34, improving the buffering performance between the arc-shaped fixture 3 and the wind power blade. At the same time, the rubber pad 34 fills the gap between it and the wind power blade, ensuring the stable installation of the wind power blade and avoiding problems caused by loosening. The contact surface between the circular sleeve formed by the two sets of arc-shaped fixtures 3 and the wind power blade is greatly increased, further improving the stability of the wind power blade when it is fixed during transfer.

[0046] Furthermore, the locking mechanism 4 includes triangular plates 41 fixedly connected to the two substrates. The triangular plates 41 are arranged in pairs. A plurality of extrusion columns 42 are rotatably installed between the triangular plates 41. A handwheel 43 is provided on the extrusion column 42. The triangular plates 41 are fixedly installed on the substrates in a front-back symmetric distribution. A plurality of extrusion columns 42 are rotatably installed between the two sets of triangular plates 41 through threaded shaft pins. A handwheel 43 is rotatably installed at the position corresponding to the extrusion column 42 on the outer side surface of the triangular plate 41. The handwheel 43 is fixedly connected to the threaded shaft pin on the extrusion column 42. The plurality of extrusion columns 42 are respectively distributed on the outer surfaces of the fixed arc plate 31, the first movable plate and the second movable plate. When the two sets of arc-shaped fixtures 3 are sleeved and distributed at the root of the wind power blade, the extrusion column 42 is controlled to rotate through the handwheel 43. By controlling the eccentric rotation of the extrusion column 42, the extrusion column 42 applies an extrusion force to the arc-shaped fixture 3 from the outside to the inside, so that the two sets of arc-shaped fixtures 3 move inward and clamp the wind power blade. Through the cooperation of the plurality of extrusion columns 42 and the arc-shaped fixture 3 provided, it is convenient to apply clamping forces to multiple parts of the outer surface of the wind power blade, further improving the stability and safety of the wind power blade during clamping and transfer.

[0047] During the operation process, during the transportation of the wind power blade, the operation of fixing the blade with this lifting and supporting structure is as follows: First, place the first substrate 1 and the second substrate 2 on both sides of the wind power blade respectively, so that the fixture 3 is located between the blade and the substrate. The fixture 3 is composed of a fixed arc plate 31, a first movable plate and a second movable plate, and an arc-shaped rubber pad 34 is pasted on its inner wall surface. The expansion or closing of the fixture 3 is controlled by the locking mechanism 4 to realize the clamping and fixing of the blade.

[0048] During specific operation, first bring the fixed arc plate of the fixture 3 on the substrate close to the root of the wind turbine blade, and then control the first movable plate and the second movable plate to close inward to form a circular sleeve structure, which closely fits the arc contour of the blade root. The rubber pad 34 on the inner wall of the fixture 3 is in an arc-expanded state under its own elastic force, providing buffering when contacting the blade, filling the gaps, and ensuring stable installation; the locking mechanism 4 includes a pair of triangular plates 41 fixed on the two substrates, and a plurality of sets of extrusion columns 42 with handwheels 43 are rotatably installed between the triangular plates 41. Operate the handwheel 43 to make the extrusion column 42 perform eccentric rotation, apply an extrusion force to the arc-shaped fixture 3 from the outside to the inside, and push the two sets of arc-shaped fixtures 3 to clamp the wind turbine blade inward. The plurality of sets of extrusion columns 42 respectively act on the outer surfaces of the fixed arc plate 31, the first movable plate and the second movable plate, and can apply clamping forces to multiple parts of the outer surface of the blade, thereby further improving the stability and safety of the wind turbine blade during clamping and transfer.

[0049] Embodiment 2

[0050] Refer to Figure 1 - Figure 4 This is the second embodiment of the present invention, which provides a lifting and supporting structure during the transportation of wind turbine blades. This device includes a driving mechanism 5, which is arranged on the first substrate 1 and the second substrate 2 and is used to drive the first substrate 1 and the second substrate 2 to drive the fixture 3 to perform relative movement.

[0051] Specifically, the driving mechanism 5 includes a connecting sleeve 51 and a bushing 52 arranged on the first substrate 1 and the second substrate 2. The bushing 52 is provided with connecting sleeves 51 on both sides. The connecting sleeve 51 is fixedly installed on the substrate in an embedded manner, and the outer side surface of the substrate is also provided with a bushing 52.

[0052] Furthermore, the driving mechanism 5 includes a fixed rod 53 arranged on the connecting sleeve 51. The substrate is slidably installed on the fixed rod 53 through the connecting sleeve 51. A support frame 54 for supporting the fixed rod 53, a cylinder 55 connected to the bushing 52 through the support frame 54. The outer side surface of the support frame 54 is provided with the cylinder 55. The output end of the cylinder 55 is rotatably connected to the bushing 52 through a push rod. By controlling the push rod to start through the cylinder 55, the push rod is used to push the substrates to slide towards each other or in the opposite direction.

[0053] During the operation process, control the rotation of the extrusion column 42 through the handwheel 43. By controlling the extrusion column 42 to perform eccentric rotation, the extrusion column 42 applies an extrusion force to the arc-shaped fixture 3 from the outside to the inside, so that the two sets of arc-shaped fixtures 3 move inward and clamp and lock the wind turbine blade. Through the cooperation of the plurality of sets of extrusion columns 42 and the arc-shaped fixture 3, it is convenient to apply clamping forces to multiple parts of the outer surface of the wind turbine blade, achieving the effect of improving the force uniformity of the wind turbine blade during clamping and transfer.

[0054] Embodiment 3

[0055] Refer toFigure 1 - Figure 5 This is the third embodiment of the present invention, which provides a lifting and supporting structure during the transportation of wind turbine blades. This device includes a moving mechanism 6 arranged on a driving mechanism 5, enabling the driving mechanism 5 to move the clamps 3 on the two substrates towards the blade.

[0056] Specifically, the moving mechanism 6 includes a bracket 61 arranged on a support frame 54, rollers 62 arranged on the bracket 61, a connecting ear 63 arranged on the support frame 54. Bracket 61 is provided at the bottom of the support frame 54 near the four corner positions, and rollers 62 are movably installed inside the bracket 61. The side surface of the support frame 54 is fixedly connected with a connecting ear 63.

[0057] Furthermore, the roller 62 includes a frame body 621 arranged on the bracket 61, an outer inclined groove 622 and an inner inclined groove 623 opened on the frame body 621. The outer inclined groove 622 and the inner inclined groove 623 are distributed corresponding to each other inside and outside, and a rolling body 624 rotatably connected to the inner inclined groove 623;

[0058] Among them, the roller 62 includes a frame body 621. Multiple groups of outer inclined grooves 622 are equidistantly opened on the outer surface of the frame body 621. Multiple groups of inner inclined grooves 623 are equidistantly opened on the inner wall surface of the frame body 621. The inner inclined groove 623 and the outer inclined groove 622 are distributed corresponding to each other inside and outside. Multiple groups of rolling bodies 624 are rotatably installed inside the frame body 621. The multiple groups of rolling bodies 624 are sequentially arranged in an inclined shape in an annular groove. Both ends of the rolling body 624 are rotatably installed in the inner inclined groove 623 through a rotating shaft. The opening of the outer inclined groove 622 and the inner inclined groove 623 facilitates the installation and disassembly of the rolling body 624;

[0059] During the operation process, before use, place the support frame 54 on a transport vehicle, and use a crane to lift the wind turbine blade and suspend it above the vehicle. Adjust the position of the support frame 54 through the rollers 62 to move it to the root of the wind turbine blade. At this time, control the two clamps 3 to be distributed on the outer surface of the blade, and close the arc-shaped clamps 3 through the locking mechanism 4. Further, by controlling the eccentric rotation of the extrusion column 42, apply an extrusion force to the arc-shaped clamps 3 from the outside to the inside, so that the two arc-shaped clamps 3 clamp the wind turbine blade inward, thereby fixing the root of the blade. After the fixation is completed, the crane sling can be removed, and the position of the wind turbine blade can be precisely adjusted by using the support frame 54 to accurately dock the blade flange at the root with the positioning flange on the transport vehicle, improving the transfer efficiency.

[0060] When it is necessary to fix and transfer the wind turbine blade to the transport vehicle, control the movement of the support frame 54 to make the fixture 3 close to the root of the wind turbine blade. Then, control the two sets of fixtures 3 to approach each other and sleeved on the outer surface of the blade root. Subsequently, control the first movable plate and the second movable plate to close inward, so that the two sets of arc-shaped fixtures 3 form a circular sleeve, tightly fixing the root of the wind turbine blade. The rubber pad 34 on the inner wall of the fixture 3 contacts the root, providing buffering and filling the gap to ensure the stability of the blade and avoid loosening problems. In addition, the circular sleeve formed by the two sets of arc-shaped fixtures 3 has a large contact surface with the blade, further improving the stability during fixation.

[0061] Control the rotation of the extrusion column 42 through the handwheel 43 to make it perform eccentric rotation, so as to apply an extrusion force to the arc-shaped fixture 3 from the outside to the inside, making the two sets of arc-shaped fixtures 3 clamp the wind turbine blade inward. The cooperation of multiple extrusion columns 42 and the arc-shaped fixture 3 can uniformly apply clamping force to multiple parts of the outer surface of the blade, ensuring that the blade is evenly stressed during the clamping and transfer process, and improving its stability and safety.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A lifting and supporting structure for a wind turbine blade during transportation, characterized in that: including, a first substrate (1) and a second substrate (2) separately arranged on both sides of the blade; at least two jigs (3) located between the blade and the two substrates; a locking mechanism (4) provided on the two substrates and acting on the jigs (3); by controlling the expansion or closing of the jigs (3) through the locking mechanism (4), the clamping and fixing of the blade are realized.

2. The lifting and supporting structure for transporting wind turbine blades according to claim 1, characterized in that: The jig (3) includes a fixed arc plate (31) provided on the first substrate (1) and the second substrate (2), a first movable plate provided on the fixed arc plate (31), and a second movable plate provided on the first movable plate.

3. The lifting and supporting structure during the transportation of the wind turbine blade according to claim 2, wherein: A rubber pad (34) is provided on the inner wall surface of the jig (3), and the rubber pad (34) supports the jig (3) to make the jig (3) and the rubber pad (34) in an arc-expanded state.

4. The lifting and supporting structure during the transportation of the wind turbine blade according to claim 2 or 3, characterized in that: The opposite side surfaces of the first substrate (1) and the second substrate (2) are arc surfaces.

5. The lifting and supporting structure during the transportation of the wind turbine blade according to claim 4, wherein: The locking mechanism (4) includes triangular plates (41) fixedly connected to the two substrates. The triangular plates (41) are arranged in pairs, and a plurality of sets of extrusion columns (42) are rotatably installed between the triangular plates (41). A handwheel (43) is provided on the extrusion column (42).

6. The lifting and supporting structure during the transportation of the wind turbine blade according to any one of claims 1 to 5, wherein: Also included is a driving mechanism (5) provided on the first substrate (1) and the second substrate (2) for driving the first substrate (1) and the second substrate (2) to drive the jigs (3) to perform relative movement; and a moving mechanism (6) provided on the driving mechanism (5) such that the driving mechanism (5) drives the jigs (3) on the two substrates to move towards the blade.

7. The lifting and supporting structure for transporting wind turbine blades according to claim 6, characterized in that: The driving mechanism (5) includes a connecting sleeve (51) and a bushing (52) provided on the first substrate (1) and the second substrate (2). The connecting sleeves (51) are respectively provided on both sides of the bushing (52).

8. The lifting and supporting structure for transporting wind turbine blades according to claim 7, wherein: The driving mechanism (5) includes a fixed rod (53) provided on the connecting sleeve (51), a support frame (54) for supporting the fixed rod (53), and a cylinder (55) connected to the bushing (52) through the support frame (54).

9. The lifting and supporting structure during the transportation of the wind turbine blade according to claim 8, wherein: The moving mechanism (6) includes a bracket (61) provided on the support frame (54), rollers (62) provided on the bracket (61), and connecting ears (63) provided on the support frame (54).

10. The lifting and supporting structure during the transportation of a wind turbine blade according to claim 9, wherein: The roller (62) includes a frame body (621) provided on the bracket (61), an outer inclined groove (622) and an inner inclined groove (623) opened on the frame body (621). The outer inclined groove (622) and the inner inclined groove (623) are distributed inside and outside correspondingly, and a rolling body (624) rotatably connected to the inner inclined groove (623).

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