Air hoisting device for fan blade and hoisting method of air hoisting device

Abstract

The invention provides a fan blade air lifting device and a lifting method thereof.The fan blade air lifting device comprises a beam body, upper pressing clamps and a plurality of self-adaptive clamps are arranged on the two sides of the beam body, a lifting belt fastening mechanism is arranged on one side of each upper pressing clamp, an adjusting lifting beam is arranged at the top of the beam body, movable lifting tools are arranged at the two ends of the adjusting lifting beam, and each movable lifting tool comprises two second winches; the second winch is connected with the beam body. The self-adaptive clamp can adapt to different arc-shaped surfaces and is high in adaptability, so that the beam body clamps the blade, and the blade is prevented from being separated from the beam body during hoisting. After the lifting belt is manually wound from the top of the blade to the bottom of the blade, one end of the lifting belt is installed on the sliding block, the locking oil cylinder is contracted so that one end of the lifting belt can abut against the interior of the hollow box, meanwhile, the winch is wound, the locking oil cylinder is contracted so that the lifting belt can clamp the blade, huge friction force is generated between the lifting belt and the surface of the blade, and it is further guaranteed that the whole structure clamps the blade; and the falling risk caused by swinging, twisting and fluttering of the blades in the transportation process is avoided.

Description

Technical Field

[0001] This invention relates to the field of blade hoisting, and in particular to a wind turbine blade aerial hoisting device and hoisting method. Background Technology

[0002] As the capacity of a single wind turbine unit continues to increase, the size and weight of the wind turbine blades have also increased significantly. Currently, the transportation of wind turbine blades mainly relies on heavy trucks and special vessels. In complex terrain and maritime transportation, ultra-large cranes are usually required for hoisting, which places stringent requirements on the work site and is easily affected by the weather, resulting in high safety risks and low efficiency.

[0003] Due to their large mass, high inertia, and large frontal area, the blades are prone to swaying, twisting, and fluttering during hoisting, posing a risk of falling. Furthermore, the inability to maintain a horizontal position during hoisting increases the risk of excessive tilting, further amplifying the risk of the blade falling.

[0004] During the installation phase, high-precision alignment of the blade root flange with the bolt holes on the hub is required, which places extremely high demands on the positioning accuracy of the hoisting equipment. During blade installation, to accommodate blade aerodynamic performance, wind farm conditions, or tower installation deviations, the flange mounting surface itself is not perfectly vertical, and there may be a certain tilt angle between the hub and the blade. This means that the blade and hub are not aligned horizontally during the connection. Existing cranes struggle to handle blades at this angle. Furthermore, with a large windward area, existing hoisting equipment struggles to control the blade's attitude when it sways, twists, or flutters, severely impacting blade stability and failing to meet the required positioning accuracy during installation, leading to blade connection failures. Summary of the Invention

[0005] This invention provides a wind turbine blade aerial hoisting device and method, which solves the problem that the blades are large in mass, have high inertia, and large windward area, making it impossible to keep the blades in a horizontal state during hoisting, which easily causes swaying, twisting and flutter, and poses a risk of falling.

[0006] Another technical problem solved by this invention is that existing cranes have difficulty in handling blades that are docked at a certain angle. When blades swing, twist, or flutter, existing hoisting equipment has difficulty controlling their posture, resulting in insufficient blade installation accuracy and blade docking failure.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a wind turbine blade aerial hoisting device and hoisting method, including a beam, with upper pressure clamps and multiple adaptive clamps on both sides of the beam, a sling fastening mechanism on one side of the upper pressure clamp, an adjusting lifting beam on the top of the beam, and movable lifting devices at both ends of the adjusting lifting beam, the movable lifting devices including two second winches, the second winches being connected to the beam.

[0008] In the preferred embodiment, the beam includes a support frame, with crossbars at the bottom of both ends of the support frame, upper support rods at the top of the crossbars, sliding frames on both sides of the support frame, a hollow box on one side of the sliding frame, a top plate on the top of the support frame, and lifting lugs at the four corners of the top plate.

[0009] In the preferred embodiment, the adaptive fixture includes a housing with side columns on both sides, a rotating frame rotatably connected to the side columns, a V-shaped frame on the rotating frame, rotating seats at both ends of the V-shaped frame, and an arc-shaped anti-slip pad on the rotating seat.

[0010] In the preferred embodiment, a connecting shaft is provided on the side column, and a first hydraulic cylinder is rotatably connected on the connecting shaft. The rotating frame includes a rotating frame shaft, and one end of the first hydraulic cylinder is rotatably connected to the rotating frame shaft. A torsion spring is provided between the V-shaped frame and the rotating seat, and the sleeve abuts against the crossbar.

[0011] In a preferred embodiment, the upper pressure clamp includes an upper pressure seat, two second adaptive clamps are provided at the bottom of the upper pressure seat, an upper pressure frame is provided on the upper pressure seat, the upper pressure frame is rotatably connected to the support, and a second hydraulic cylinder is provided on the upper pressure seat, the second hydraulic cylinder is rotatably connected to the upper support rod. The second adaptive fixture structure is the same as the adaptive fixture structure.

[0012] In the preferred embodiment, the sling fastening mechanism includes a winch and a locking cylinder. The winch slides against the sliding frame. A lifting cylinder is provided at the bottom of the winch. A slider is provided at the bottom of the locking cylinder. Fixed blocks are provided on both sides of the slider. The slider rests against the hollow box. One end of the sling is wound around the winch, and the other end of the sling rests between the two fixed blocks. A round rod is provided at the end of the sling, and the round rod rests against the two fixed blocks.

[0013] In the preferred embodiment, the adjusting beam has a hollow structure, and multiple positioning slots are provided on both sides of the adjusting beam. The movable lifting device includes a slide, and rollers are provided on the slide. The rollers roll against the inside of the adjusting beam. Positioning cylinders are provided on both sides of the slide and abut against the positioning slots. Two second lifting lugs are provided on the top of the adjusting beam. The second winches of the two movable lifting devices are respectively connected to the lifting lugs at the four corners of the support. A transverse hydraulic cylinder is provided between the carriage and the end of the adjusting beam.

[0014] In the preferred embodiment, a telescopic sleeve with a rotating connection is provided on one side of the beam body, a clamping device is provided at one end of the telescopic sleeve, a deflection cylinder is provided between the telescopic sleeve and the beam body, one end of the deflection cylinder is slidably connected to the telescopic sleeve, the clamping device includes a column seat, a clamp arm with a rotating connection is provided on the column seat, an arc arm with a rotating connection is provided on the clamp arm, and a clamp is provided between the two arc arms.

[0015] In the preferred embodiment, a third hydraulic cylinder is provided between the clamp arm and the arc arm. The clamping device includes a clamping hydraulic cylinder, a pusher is provided at one end of the clamping hydraulic cylinder, rotating claws are provided on both sides of the pusher, a positioning post is provided between the two rotating claws, and the positioning post and the pusher are located on different arc arms.

[0016] A method for hoisting a wind turbine blade aerial hoisting device, S1, the vehicle body transports the blade to the vicinity of the wind turbine, and the two ends of the hoisting beam are adjusted to connect with the crane; S2. Observe the tilting posture of the blades, drive the four second winches to make the tilting posture of the beam the same as the tilting posture of the blade installation, and use the crane to make the blades located inside the beam. S3. Drive the adaptive clamps to make multiple adaptive clamps abut against the bottom of the blade, and drive the second hydraulic cylinder and the second adaptive clamps to make multiple second adaptive clamps abut against the top of the blade; S4. The winch unwinds the sling from the top of the blade to the bottom of the blade. One end of the sling is mounted on the slider. The locking cylinder retracts and the winch moves down. At the same time, the winch rewinds and the sling clamps the blade. S5. Blade lifting: During the blade lifting process, the lifting device is moved by the transverse hydraulic cylinder, and the beam angle is adjusted by the four second winches to keep the blade horizontal; S6. Blade docking: The clamping device and telescopic sleeve are used to hold the tower. The horizontal angle is adjusted by the deflection cylinder. The blades, pitch angle and axial deflection angle are adjusted by the four second winches to insert the blades into the tower.

[0017] The beneficial effects of this invention are: it drives and adjusts the four second winches on the lifting beam so that the tilt angle of the beam is the same as the tilt angle of the blades. This avoids the problem of existing cranes being unable to handle situations where the lifting device and blades are difficult to connect when the blades are placed at a certain angle.

[0018] The adaptive clamps are driven to abut the blade bottom, while the second cylinder and second adaptive clamps are driven to abut the blade top. These adaptive clamps are adaptable to different curved surfaces, ensuring the beam holds the blade and preventing it from detaching during lifting. After the sling is manually wound from the blade top to the blade bottom, one end of the sling is mounted on a slider. The locking cylinder is then retracted, placing one end of the sling against the hollow box. Simultaneously, the winch and locking cylinder retract, clamping the sling tightly around the blade. The sling generates significant friction with the blade surface, further ensuring the overall structure clamps the blade, preventing the blade from swinging, twisting, fluttering, or falling during transport.

[0019] When the blades are transported at high altitudes, if they tilt due to wind, the blades can be kept horizontal by adjusting the different winding degrees of the four secondary winches. This prevents the blades from being at an angle for an extended period of time at high altitudes, which could lead to a risk of them falling.

[0020] When the blades are installed, the clamping device is used to clamp the tower, and the deflection cylinder is driven to adjust the horizontal angle of the overall structure. The blades, pitch angle and axial deflection angle are adjusted by the four second winches. When the blade tilt angle and installation angle are the same, the position of the moving lifting tool is adjusted so that the moving lifting tool is directly above the lifting lug. This avoids the steel cable on the lifting lug being in a relatively tilted position, and avoids the phenomenon of the steel cable breaking due to excessive stress during the long-term installation process. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a top view of the overall structure of the invention; Figure 2 This is an axonometric view of a partial structure of the present invention; Figure 3 This is an axonometric view of a partial structure of the present invention; Figure 4 This is an axonometric view of the beam body of the present invention; Figure 5 This is an isometric view of the adaptive clamp and the upper pressure clamp of the present invention; Figure 6 This is an axonometric view of the adaptive fixture of the present invention; Figure 7 This is a side view of the sling fastening mechanism of the present invention; Figure 8 This is a schematic diagram of the structure of the adjustable lifting beam cross-section of the present invention; Figure 9 This is a schematic diagram of the structure of the adjustable lifting beam of the present invention; Figure 10 This is a top view of the clamping device of the present invention; Figure 11 This is an axial sectional view of the clamp of the present invention; Figure 12 This is an axonometric view of the vehicle body with blades mounted on it according to the present invention; In the diagram: Beam 1; Support 101; Crossbar 102; Upper Support 103; Sliding Frame 104; Hollow Box 105; Top Plate 106; Lifting Lug 107; Adaptive Clamp 2; Jacket 201; Side Column 202; Connecting Shaft 2021; Rotating Frame 203; Rotating Frame Shaft 2031; V-Shaped Frame 204; Rotating Seat 205; Arc-Shaped Anti-Slip Pad 206; First Hydraulic Cylinder 207; Upper Pressing Clamp 3; Upper Pressing Seat 301; Upper Pressing Frame 302; Second Hydraulic Cylinder 303; Second Adaptive Clamp 4; Sling Fastening Mechanism 5; Lifting Cylinder 501; Winch 502 Locking cylinder 503; slider 504; fixing block 5041; adjusting lifting beam 6; positioning groove 601; moving lifting device 7; slide 701; roller 702; positioning cylinder 703; second winch 704; lateral movement cylinder 705; clamping device 8; column seat 801; clamp arm 802; arc arm 803; third cylinder 804; clamp 805; roller 8051; rotating claw 8052; pusher 8053; clamping cylinder 8054; positioning column 8055; telescopic sleeve 9; deflection cylinder 10; blade 11; car body 12. Detailed Implementation

[0022] Example 1: like Figure 1-12 A wind turbine blade aerial hoisting device and method are disclosed, comprising a beam 1, with upper pressure clamps 3 and multiple adaptive clamps 2 on both sides of the beam 1. A sling fastening mechanism 5 is provided on one side of each upper pressure clamp 3. An adjustable lifting beam 6 is provided at the top of the beam 1, and movable lifting devices 7 are provided at both ends of the adjustable lifting beam 6. Each movable lifting device 7 includes two second winches 704 connected to the beam 1. With this structure, when the blade 11 is hoisted, due to the need for balanced transport stability, adaptation to road restrictions, and protection of the blade's critical structure, the tail end of the blade 11 is tilted upwards during transport on the vehicle body 12. By driving the crane to transport the entire structure to the vicinity of the blade 11, the four second winches 704 on the adjustable lifting beam 6 are driven to ensure that the tilt angle of the beam 1 is the same as the tilt angle of the blade 11. This avoids the problem of existing cranes being unable to handle the blade 11 when it is placed at a certain angle, making it difficult to connect the lifting device to the blade 11.

[0023] The beam 1 is moved horizontally so that the blade 11 is located inside the beam 1. The adaptive clamp 2 is driven so that multiple adaptive clamps 2 abut against the bottom of the blade 11. The second hydraulic cylinder 303 and the second adaptive clamp 4 are driven so that multiple second adaptive clamps 4 abut against the top of the blade 11. The adaptive clamp 2 can adapt to different curved surfaces and has strong adaptability, so that the beam 1 clamps the blade 11 and prevents the blade 11 from falling off the beam 1 during lifting. After the sling is manually wound from the top to the bottom of the blade 11, one end of the sling is installed on the slider 504. The retraction locking cylinder 503 is used so that one end of the sling abuts against the hollow box 105. At the same time, the winch 502 and the retraction locking cylinder 503 are wound up so that the sling clamps the blade 11. The sling and the surface of the blade 11 generate a huge friction force, which further ensures that the overall structure clamps the blade 11 and avoids the risk of the blade 11 falling due to swinging, twisting and fluttering during transportation.

[0024] When the blade 11 is being transported at high altitude, if the blade 11 tilts due to wind, the different winding degrees of the four second winches 704 are adjusted to keep the blade 11 horizontal, thus avoiding the risk of it falling due to prolonged tilting during high-altitude transport.

[0025] When blades 11 are installed, open the clamping device 8, drive the telescopic sleeve 9, adjust the deflection cylinder 10 and the clamping device 8 so that the clamping device 8 clamps the tower, drive the deflection cylinder 10, adjust the horizontal angle of the overall structure's deflection cylinder 10, and adjust the blades 11, pitch angle and axial deflection angle through the four second winches 704. When the tilt angle of blades 11 is the same as the installation angle, adjust the position of the moving lifting device 7 so that the moving lifting device 7 is directly above the lifting lug 107, so as to avoid the steel cable on the lifting lug 107 being in a relatively tilted position, and to avoid the phenomenon of the steel cable breaking due to excessive stress during the long-term connection process.

[0026] After the blades 11 are connected, the locking cylinder 503 and the lifting cylinder 501 of the drive strap fastening mechanism 5 are activated so that the slider 504 moves out of the hollow box 105, so that one end of the strap can automatically detach from the hollow box 105. The winch 502 is raised, the contact area between the strap and the blades 11 is reduced, and the winch 502 is wound up so that the strap detaches from the blades 11.

[0027] In the preferred embodiment, the beam 1 includes a support 101, with crossbars 102 at both ends of the support 101, an upper support rod 103 at the top of the crossbars 102, sliding frames 104 on both sides of the support 101, a hollow box 105 on one side of the sliding frame 104, a top plate 106 on the top of the support 101, and lifting lugs 107 at the four corners of the top plate 106. With this structure, the adaptive clamp 2 is located on the crossbars 102. The lifting cylinder 501 of the hoisting fastening mechanism 5 is located at the bottom of the sliding frame 104, and the winch 502 slides against the sliding frame 104.

[0028] In a preferred embodiment, the adaptive clamp 2 includes a housing 201, with side posts 202 on both sides of the housing 201. A rotating frame 203 is rotatably connected to the side posts 202, and a V-shaped frame 204 is mounted on the rotating frame 203. Rotating seats 205 are located at both ends of the V-shaped frame 204, and arc-shaped anti-slip pads 206 are provided on the rotating seats 205. This structure drives the first hydraulic cylinder 207 to rotate the rotating frame 203, which in turn rotates the V-shaped frame 204, causing the multiple arc-shaped anti-slip pads 206 to abut against the surface of the blade 11.

[0029] In a preferred embodiment, a connecting shaft 2021 is provided on the side column 202, and a first hydraulic cylinder 207 is rotatably connected to the connecting shaft 2021. The rotating frame 203 includes a rotating frame shaft 2031, and one end of the first hydraulic cylinder 207 is rotatably connected to the rotating frame shaft 2031. A torsion spring is provided between the V-shaped frame 204 and the rotating seat 205, and the sleeve 201 abuts against the crossbar 102. With this structure, a torsion spring is provided between the V-shaped frame 204 and the rotating seat 205 to prevent the rotating seat 205 from sliding and falling.

[0030] In a preferred embodiment, the upper pressure clamp 3 includes an upper pressure seat 301, two second adaptive clamps 4 are provided at the bottom of the upper pressure seat 301, an upper pressure frame 302 is provided on the upper pressure seat 301, the upper pressure frame 302 is rotatably connected to the support 101, and a second hydraulic cylinder 303 is rotatably connected on the upper pressure seat 301, the second hydraulic cylinder 303 is rotatably connected to the upper support rod 103. The second adaptive clamp 4 has the same structure as the adaptive clamp 2. This structure drives the second hydraulic cylinder 303 to rotate the upper clamp 3 relative to the beam 1, causing the upper clamp 3 to press downwards, so that the two second adaptive clamps 4 of the upper clamp 3 abut against the top of the blade 11.

[0031] In a preferred embodiment, the sling fastening mechanism 5 includes a winch 502 and a locking cylinder 503. The winch 502 slides against the sliding frame 104. A lifting cylinder 501 is provided at the bottom of the winch 502, and a slider 504 is provided at the bottom of the locking cylinder 503. Fixing blocks 5041 are provided on both sides of the slider 504. The slider 504 abuts against the hollow box 105. One end of the sling is wound around the winch 502, and the other end of the sling abuts between the two fixing blocks 5041. A round rod is provided at the end of the sling, and the round rod abuts against the two fixing blocks 5041. With this structure, the sling has a round rod at the end, and the round rod abuts against the two fixing blocks 5041. The round rod abuts against the two fixing blocks 5041. The sling passes through the two fixing blocks 5041. The fixed block 5041 and the slider 504 are provided with rounded corners. When the slider 504 moves downward out of the hollow box 105, the sling slides out of the slider 504 under the action of gravity.

[0032] After the blades 11 are connected, the locking cylinder 503 and the lifting cylinder 501 of the drive strap fastening mechanism 5 are activated so that the slider 504 moves out of the hollow box 105, so that one end of the strap can automatically detach from the hollow box 105. The winch 502 is raised, the contact area between the strap and the blades 11 is reduced, and the winch 502 is wound up so that the strap detaches from the blades 11.

[0033] In the preferred embodiment, the adjusting beam 6 has a hollow structure, and multiple positioning slots 601 are provided on both sides of the adjusting beam 6. The movable lifting device 7 includes a slide 701, and rollers 702 are provided on the slide 701. The rollers 702 roll against the inside of the adjusting beam 6. Positioning cylinders 703 are provided on both sides of the slide 701. The positioning cylinders 703 abut against the positioning slots 601. Two second lifting lugs are provided on the top of the adjusting beam 6. The second winches 704 of the two movable lifting devices 7 are respectively connected to the lifting lugs 107 at the four corners of the bracket 101. A transverse hydraulic cylinder 705 is provided between the slide 701 and the end of the adjusting beam 6. With this structure, when adjusting the docking angle of the blade 11, the blade 11 tilts so that the steel cable on the lifting lug 107 tilts, and the stress on the steel cable is reduced by adjusting the position of the moving lifting device 7.

[0034] When the tilt angle of blade 11 is the same as the installation angle, adjust the position of the movable lifting device 7 so that the movable lifting device 7 is directly above the lifting lug 107, so as to avoid the steel cable on the lifting lug 107 being in a relatively tilted position, and to avoid the phenomenon of the steel cable breaking due to excessive stress during long-term docking.

[0035] In a preferred embodiment, a telescopic sleeve 9 is rotatably connected to one side of the beam 1. A clamping device 8 is provided at one end of the telescopic sleeve 9. A deflection cylinder 10 is provided between the telescopic sleeve 9 and the beam 1. One end of the deflection cylinder 10 is slidably connected to the telescopic sleeve 9. The clamping device 8 includes a column seat 801, a clamp arm 802 rotatably connected to the column seat 801, and an arc-shaped arm 803 rotatably connected to the clamp arm 802. A clamp 805 is provided between the two arc-shaped arms 803. With this structure, one end of the deflection cylinder 10 is rotatably connected to the beam 1, and the other end of the deflection cylinder 10 is rotatably connected to a longitudinal rotating seat, which is slidably connected to the telescopic sleeve 9. The telescopic sleeve 9 includes an outer cylinder, a middle cylinder, and an inner cylinder. The inner cylinder slides against the middle cylinder, and the middle cylinder slides against the outer cylinder. Multiple telescopic cylinders are provided between adjacent cylinders. By driving the telescopic cylinders at different positions, the telescopic sleeve 9 is extended and retracted. The outer cylinder is rotatably connected to the beam 1.

[0036] In a preferred embodiment, a third hydraulic cylinder 804 is provided between the clamping arm 802 and the arc-shaped arm 803. The clamping device 805 includes a clamping hydraulic cylinder 8054, with a pusher 8053 at one end of the clamping hydraulic cylinder 8054. Rotating claws 8052 are provided on both sides of the pusher 8053, and a positioning post 8055 is provided between the two rotating claws 8052. The positioning post 8055 and the pusher 8053 are located on different arc-shaped arms 803. With this structure, one end of the pusher 8053 has an arc-shaped top surface, and the other end of the pusher 8053 is triangular. The pusher 8053 is connected to the clamping hydraulic cylinder 8054, and the rotating claws 8052 are rotatably connected to the arc-shaped arm 803. One end of the rotating claw 8052 is provided with a roller 8051, and the other end of the rotating claw 8052 is provided with a sliding wheel, which abuts against the inclined surface of the triangle.

[0037] Example 2: Further explanation in conjunction with Example 1: A method for hoisting a wind turbine blade in an aerial hoisting device: S1, the vehicle body 12 transports the blade 11 to the vicinity of the wind turbine, and adjusts the connection between the two ends of the lifting beam 6 and the crane; S2, observing the tilting posture of the blade 11, driving four second winches 704 to make the tilting posture of the beam 1 the same as the tilting posture of the blade 11 during installation, and using the crane to position the blade 11 inside the beam 1; S3, driving the adaptive clamps 2 to make multiple adaptive clamps 2 abut against the bottom of the blade 11, and driving the second hydraulic cylinder 303 and the second adaptive clamps 4 to make multiple second adaptive clamps 4 abut against the top of the blade 11; S4, the winches 502 unwind, so that the sling is wound from the top of the blade 11 to the bottom of the blade 11. One end of the sling is installed on the slider 504. The locking cylinder 503 and the lowering winch 502 are retracted, and the winch 502 is wound up at the same time. The sling clamps the blade 11. S5, Lifting of blade 11: During the lifting of blade 11, the moving lifting device 7 is moved by the transverse moving cylinder 705. The angle of the beam 1 is adjusted by the four second winches 704 to keep the blade 11 horizontal. S6, Connecting blade 11: The clamping device 8 and the telescopic sleeve 9 are used to clamp the tower. The horizontal angle is adjusted by the deflection cylinder 10. The blade 11 and the pitch angle and axial deflection angle are adjusted by the four second winches 704 to insert the blade 11 into the tower.

[0038] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A device for aerial hoisting of wind turbine blades, characterized in that: The beam (1) includes an upper pressure clamp (3) and multiple adaptive clamps (2) on both sides of the beam (1). The upper pressure clamp (3) is provided with a sling fastening mechanism (5) on one side. The top of the beam (1) is provided with an adjustable lifting beam (6). The two ends of the adjustable lifting beam (6) are provided with movable lifting devices (7). The movable lifting device (7) includes two second winches (704). The second winches (704) are connected to the beam (1).

2. The wind turbine blade aerial hoisting device according to claim 1, characterized in that: The beam (1) includes a support (101), with crossbars (102) at the bottom of both ends of the support (101), an upper support (103) at the top of the crossbars (102), sliding frames (104) on both sides of the support (101), a hollow box (105) on one side of the sliding frame (104), a top plate (106) at the top of the support (101), and lifting lugs (107) at the four corners of the top plate (106).

3. The wind turbine blade aerial hoisting device according to claim 1, characterized in that: The adaptive fixture (2) includes a housing (201), with side columns (202) on both sides of the housing (201), a rotating frame (203) rotatably connected on the side columns (202), a V-shaped frame (204) on the rotating frame (203), and rotating seats (205) at both ends of the V-shaped frame (204), with an arc-shaped anti-slip pad (206) on the rotating seat (205).

4. The wind turbine blade aerial hoisting device according to claim 3, characterized in that: A connecting shaft (2021) is provided on the side column (202), and a first oil cylinder (207) is provided on the connecting shaft (2021). The rotating frame (203) includes a rotating frame shaft (2031). One end of the first oil cylinder (207) is rotatably connected to the rotating frame shaft (2031). A torsion spring is provided between the V-shaped frame (204) and the rotating seat (205). The sleeve (201) abuts against the crossbar (102).

5. The wind turbine blade aerial hoisting device according to claim 1, characterized in that: The upper pressure clamp (3) includes an upper pressure seat (301), two second adaptive clamps (4) are provided at the bottom of the upper pressure seat (301), an upper pressure frame (302) is provided on the upper pressure seat (301), the upper pressure frame (302) is rotatably connected to the support (101), and a second hydraulic cylinder (303) is rotatably connected on the upper pressure seat (301), the second hydraulic cylinder (303) is rotatably connected to the upper support rod (103); The second adaptive fixture (4) has the same structure as the adaptive fixture (2).

6. The wind turbine blade aerial hoisting device according to claim 1, characterized in that: The sling fastening mechanism (5) includes a winch (502) and a locking cylinder (503). The winch (502) slides against the sliding frame (104). The bottom of the winch (502) is provided with a lifting cylinder (501). The bottom of the locking cylinder (503) is provided with a slider (504). The slider (504) is provided with fixing blocks (5041) on both sides. The slider (504) abuts against the hollow box (105). One end of the sling is wrapped around the winch (502), and the other end of the sling abuts between the two fixing blocks (5041). The end of the sling is provided with a round rod, which abuts against the two fixing blocks (5041).

7. The wind turbine blade aerial hoisting device according to claim 1, characterized in that: The adjusting beam (6) is a hollow structure. Multiple positioning slots (601) are provided on both sides of the adjusting beam (6). The movable lifting device (7) includes a slide (701). Rollers (702) are provided on the slide (701). The rollers (702) roll against the inside of the adjusting beam (6). Positioning cylinders (703) are provided on both sides of the slide (701). Positioning cylinders (703) abut against the positioning slots (601). Two second lifting lugs are provided on the top of the adjusting beam (6). The second winches (704) of the two movable lifting devices (7) are respectively connected to the lifting lugs (107) at the four corners of the bracket (101). A transverse hydraulic cylinder (705) is provided between the slide (701) and the end of the adjusting beam (6).

8. The wind turbine blade aerial hoisting device according to claim 1, characterized in that: A telescopic sleeve (9) is provided on one side of the beam (1), a clamping device (8) is provided at one end of the telescopic sleeve (9), a deflection cylinder (10) is provided between the telescopic sleeve (9) and the beam (1), one end of the deflection cylinder (10) is slidably connected to the telescopic sleeve (9), the clamping device (8) includes a column seat (801), a clamp arm (802) is provided on the column seat (801), an arc arm (803) is provided on the clamp arm (802), and a clamp (805) is provided between the two arc arms (803).

9. The wind turbine blade aerial hoisting device according to claim 8, characterized in that: A third hydraulic cylinder (804) is provided between the clamp arm (802) and the arc arm (803). The clamp (805) includes a clamping hydraulic cylinder (8054). A pusher (8053) is provided at one end of the clamping hydraulic cylinder (8054). Rotating claws (8052) are provided on both sides of the pusher (8053). A positioning post (8055) is provided between the two rotating claws (8052). The positioning post (8055) and the pusher (8053) are located on different arc arms (803).

10. A method for hoisting a wind turbine blade aerial hoisting device according to any one of claims 1 to 9, characterized in that: S1. The vehicle body (12) transports the blades (11) to the vicinity of the wind turbine and adjusts the two ends of the lifting beam (6) to connect with the crane. S2. Observe the tilting posture of the blade (11), drive the four second winches (704) to make the tilting posture of the beam (1) the same as the tilting posture of the blade (11) installed, and use the crane to make the blade (11) located inside the beam (1); S3. Drive the adaptive clamp (2) so that multiple adaptive clamps (2) abut against the bottom of the blade (11), drive the second hydraulic cylinder (303) and the second adaptive clamp (4) so ​​that multiple second adaptive clamps (4) abut against the top of the blade (11); S4. The winch (502) unwinds the sling so that it wraps from the top of the blade (11) to the bottom of the blade (11). One end of the sling is mounted on the slider (504). The locking cylinder (503) is retracted and the winch (502) is lowered. At the same time, the winch (502) is wound up and the sling clamps the blade (11). S5. Lifting of blade (11): During the lifting process of blade (11), the lifting device (7) is moved by the horizontal movement cylinder (705), and the angle of beam (1) is adjusted by the four second winches (704) to keep blade (11) horizontal. S6, Blade (11) docking: The clamping device (8) clamps the tower frame by means of the clamping device (8) and the telescopic sleeve (9), the horizontal angle is adjusted by means of the deflection cylinder (10), and the blade (11) and the pitch angle and axial deflection angle are adjusted by means of the four second winches (704) so ​​that the blade (11) is inserted into the tower.

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