Wind turbine hub and blade splicing device

Abstract

This invention discloses a wind turbine hub and blade splicing device, which includes a hub, a pitch bearing, blades, a signal transmitting and receiving device, a blade lifting device, and a blade root bolt support device. The pitch bearing is mounted on the hub, with the blade tip corresponding to the pitch bearing. The signal transmitting and receiving device is mounted on the pitch bearing. The blade lifting device is used to lift the blades and is signal-connected to the blade lifting device. The blade root bolt support device is located at the blade tip. This wind turbine hub and blade splicing device effectively avoids blade collisions, ensures the safety of installers during installation, and improves the installation efficiency of the hub and blades.

Description

Technical Field

[0001] This invention belongs to the field of wind turbine technology, and particularly relates to a device for splicing wind turbine hub and blades. Background Technology

[0002] In traditional wind turbine assembly, the hand-operated hoists used for blade lifting are positioned high above the ground, making operation inconvenient for workers. The hoist cables are also prone to damaging the blade surface during operation. When adjusting the length of the lifting strap at the blade root end, the hand-operated hoists often cannot precisely control the perpendicularity of the blade axis to the pitch surface of the hub assembly, causing jamming of the blade root studs and hub pitch bearing holes, and even damaging the threads of the blade root studs. The hub web is too close to the blade root flange, only allowing for the installation of washers and nuts, which can easily injure operators during installation and cannot fully meet the requirements for tightening the blade root bolts. The bolt holes corresponding to the hub pitch bearing web are small, resulting in numerous and inefficient on-site pitch connection operations. For large wind turbines, the blade root studs extend far outwards, and the position of the blade root flange holes cannot meet the perpendicularity requirements under the long studs. This causes some studs to fail to properly enter the pitch bearing holes during blade assembly, thus affecting the on-site lifting progress.

[0003] Therefore, given the aforementioned characteristics of blades being easily damaged during hoisting, operators being easily injured during installation, and the impact on hoisting progress, it is necessary to provide a wind turbine hub and blade splicing device to solve the above technical problems. Summary of the Invention

[0004] To at least partially solve the technical problems existing in the prior art, the present invention provides a wind turbine hub and blade splicing device, comprising a hub, a pitch bearing, blades, a signal transmitting and receiving device, a blade lifting device, and a blade root bolt support device, wherein:

[0005] The pitch bearing is mounted on the hub, the blade tip corresponds to the pitch bearing, the signal transmitting and receiving device is mounted on the pitch bearing, the blade lifting device is used to lift the blade, the signal transmitting and receiving device is signal connected to the blade lifting device, and the blade root bolt support device is mounted on the blade tip.

[0006] The blade lifting device includes a lifting beam assembly, a lifting strap assembly, a control cabinet assembly, a remote-controlled electric hoist assembly, a guy cable sheath, a first guy rope, and a second guy rope. The lifting beam assembly is located at both ends of the lifting strap assembly. The control cabinet assembly is located in the middle of the lifting strap assembly and controls the remote-controlled electric hoist assembly, the first guy rope, and the second guy rope. The remote-controlled electric hoist assembly is mounted on the lifting strap assembly and suspended at the rear end of the blade. The guy cable sheath is suspended at the front end of the blade. The first guy rope and the second guy rope are located at both ends of the guy cable sheath.

[0007] The blade root bolt support device includes a support bracket, an adjusting shim, a mounting bracket, a limiting component, a support arm, a hollow limiting block, a connecting block, and a tension spring. The adjusting shim is disposed between the support bracket and the blade to adjust the height of the support bracket. The mounting bracket is disposed in the middle of the support bracket. The limiting component is mounted on the mounting bracket. The support arm is rotatably disposed between the end of the support bracket and the mounting bracket. The hollow limiting block is disposed on the side of the support bracket near the support arm. The connecting block is rotatably disposed at the top of the end of the support bracket. The connecting block and the support arm are connected by the tension spring.

[0008] Furthermore, in the wind turbine hub and blade splicing device of the present invention, the hub is provided with light holes around it, a hub web is provided on one side of the hub, four hub web openings are provided around the hub web, and an irregular curved flange is provided on the hub web.

[0009] Furthermore, in the wind turbine hub and blade splicing device of the present invention, the signal transmitting and receiving device includes a first signal transmitting and receiving device, a second signal transmitting and receiving device, a third signal transmitting and receiving device, and a fourth signal transmitting and receiving device. The first signal transmitting and receiving device and the second signal transmitting and receiving device are fixed to the hub vertically by bolts, and the third signal transmitting and receiving device and the fourth signal transmitting and receiving device are fixed to the hub horizontally by bolts. The first signal transmitting and receiving device, the second signal transmitting and receiving device, the third signal transmitting and receiving device, and the fourth signal transmitting and receiving device are respectively corresponding to the optical aperture.

[0010] Furthermore, in the wind turbine hub and blade splicing device of the present invention, a blade root stud is provided at the end of the blade, and the blade root stud is matched with the optical aperture.

[0011] Furthermore, in the wind turbine hub and blade splicing device of the present invention, a U-shaped groove is provided at the top of the support arm, the U-shaped groove is matched with the blade root stud, and the U-shaped groove abuts against the blade root stud.

[0012] Furthermore, in the wind turbine hub and blade splicing device of the present invention, the limiting component includes an end cap, a compression spring, a tongue-shaped component, a first limiting block, and a second limiting block. The end cap is fixed to one end of the mounting bracket by bolts. One end of the compression spring is welded to the middle of the end cap, and the other end of the compression spring is welded to the tongue-shaped component. The first limiting block is fixed to the other end of the mounting bracket by bolts, and the second limiting block is welded to the end of the support arm near the mounting bracket.

[0013] Furthermore, in the wind turbine hub and blade splicing device of the present invention, the bottom of the tongue-shaped component is provided with a guide groove, and the top of the first limiting block is slidably connected to the guide groove.

[0014] Furthermore, in the wind turbine hub and blade splicing device of the present invention, a hollow hole is provided in the middle of the hollow limiting block, the hollow hole is matched with the tension spring, one end of the tension spring is welded to the connecting block, and the other end of the tension spring passes through the hollow hole and is welded to the support arm.

[0015] Furthermore, in the wind turbine hub and blade splicing device of the present invention, a mounting platform is welded to the top of the front end of the support bracket, and elongated holes are symmetrically arranged on the mounting platform. The support bracket is fixed to the blade by bolts passing through the elongated holes.

[0016] Furthermore, in the wind turbine hub and blade splicing device of the present invention, the remote-controlled electric hoist assembly consists of two symmetrically mounted on one side of the sling assembly, and the output ends of the two remote-controlled electric hoist assemblies are connected.

[0017] The wind turbine hub and blade splicing device of the present invention has the following advantages and beneficial effects:

[0018] When the blades are connected to the hub, an electronic control system effectively avoids damage to the blade root threaded studs. The blade lifting device is equipped with an electric hoist that works in conjunction with the hub assembly, enabling automatic adjustment of the blade root connection angle. This solves the problems of low efficiency, low operational safety, and easy damage to the blade surface caused by traditional manual hoists. The designed irregular curved surface of the hub web addresses the issues of limited installation space for blade root bolts, which can lead to installation accidents, and the time-consuming process of multiple pitch adjustments required to tighten the blade root bolts. The designed support device for the blade root bolt assembly solves the problem of the inability to guarantee the verticality of the blade root studs in large wind turbine units, which prevents the blades from being properly assembled and spliced ​​with the wind turbine. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of the unassembled structure of the wind turbine hub and blade splicing device of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram along direction A shows the distribution structure of the signal transmitting device;

[0022] Figure 3 for Figure 2 The enlarged schematic diagram of section II shows the corresponding positions of the signal transmitting device and the optical aperture;

[0023] Figure 4 for Figure 1 The enlarged schematic diagram of section I shows the structural state when the hub and blade are spliced ​​together;

[0024] Figure 5 for Figure 4 A cross-sectional schematic diagram of the FF shows the support structure of the U-shaped groove for the blade root stud;

[0025] Figure 6 This is a schematic diagram of the hub structure of the wind turbine hub and blade splicing device of the present invention;

[0026] Figure 7 This is a schematic diagram of the assembled structure of the wind turbine hub and blade splicing device of the present invention;

[0027] Figure 8 for Figure 7 The cross-sectional schematic diagram of BB shows the connection structure of the remote-controlled electric hoist assembly;

[0028] Figure 9 for Figure 6 A cross-sectional view of AA shows the internal mounting space of the wheel hub;

[0029] Figure 10 for Figure 9 The enlarged schematic diagram of section III shows the structural state after the hub and blades are spliced ​​together;

[0030] Figure 11 for Figure 9 The enlarged schematic diagram of section III shows the support structure of the blade root bolt support device for the blade root stud;

[0031] Figure 12 for Figure 11 The enlarged schematic diagram of section IV shows the limiting structure of the limiting component;

[0032] Figure 13 for Figure 11 A cross-sectional schematic diagram of the DD shows the structure of the hollow limiting block;

[0033] Figure 14 for Figure 11 The cross-sectional schematic diagram of the EE shows the installation structure of the support bracket.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1: Wheel hub; 11: Light hole; 12: Wheel hub web; 13: Wheel hub web opening; 14: Irregular curved surface flange;

[0036] 2: Pitch bearing;

[0037] 3: Blade; 31: Leaf root stud;

[0038] 4: Signal transmitting and receiving device; 41: First signal transmitting and receiving device; 42: Second signal transmitting and receiving device; 43: Third signal transmitting and receiving device; 44: Fourth signal transmitting and receiving device;

[0039] 5: Blade lifting device; 51: Sling assembly; 52: Lifting beam assembly; 53: Control cabinet assembly; 54: Remote control electric hoist assembly; 55: Cable sheath; 56: First cable rope; 57: Second cable rope.

[0040] 6: Leaf root bolt support device;

[0041] 61: Support bracket; 611: Mounting platform; 612: Oblong hole;

[0042] 62: Adjusting shims; 63: Installing brackets;

[0043] 64: Limiting component; 641: End cap; 642: Compression spring; 643: Tongue-shaped component; 644: Guide groove; 645: First limiting block; 646: Second limiting block;

[0044] 65: Support arm; 651: U-shaped slot;

[0045] 66: Hollow limit stop; 661: Hollow hole;

[0046] 67: Connecting block; 68: Tension spring. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0048] like Figures 1 to 14 As shown, the wind turbine hub and blade splicing device of the present invention includes a hub 1, a pitch bearing 2, blades 3, a signal transmitting and receiving device 4, a blade lifting device 5, and a blade root bolt support device 6, wherein:

[0049] The pitch bearing 2 is mounted on the hub 1, the end of the blade 3 corresponds to the pitch bearing 2, the signal transmitting and receiving device 4 is mounted on the pitch bearing 2, the blade lifting device 5 is used to lift the blade 3, the signal transmitting and receiving device 4 is connected to the blade lifting device 5, and the blade root bolt support device 6 is mounted on the end of the blade 3.

[0050] The blade lifting device includes a lifting beam assembly 51, a lifting strap assembly 52, a control cabinet assembly 53, a remote-controlled electric hoist assembly 54, a guy rope sheath 55, a first guy rope 56, and a second guy rope 57. The lifting beam assembly 51 is located at both ends of the lifting strap assembly 52. ​​The control cabinet assembly 53 is located in the middle of the lifting strap assembly 52 and controls the remote-controlled electric hoist assembly 54, the first guy rope 56, and the second guy rope 57. The remote-controlled electric hoist assembly 54 is mounted on the lifting strap assembly 52 and is lifted to the rear end of the blade 3. The guy rope sheath 55 is lifted to the front end of the blade 3. The first guy rope 56 and the second guy rope 57 are located at both ends of the guy rope sheath 55.

[0051] The blade root bolt support device 6 includes a support bracket 61, an adjusting shim 62, a mounting bracket 63, a limiting component 64, a support arm 65, a hollow limiting block 66, a connecting block 67, and a tension spring 68. The adjusting shim 62 is located between the support bracket 61 and the blade 3 to adjust the height of the support bracket 61. The mounting bracket 63 is located in the middle of the support bracket 61. The limiting component 64 is mounted on the mounting bracket 63. The support arm 65 is rotatably located between the end of the support bracket 61 and the mounting bracket 63. The hollow limiting block 66 is located on the side of the support bracket 61 near the support arm 65. The connecting block 67 is rotatably located at the top of the end of the support bracket 61. The connecting block 67 and the support arm 65 are connected by the tension spring 68.

[0052] Furthermore, in the wind turbine hub and blade splicing device of the present invention, the hub 1 is surrounded by light holes 11, and a hub web 12 is provided on one side of the hub 1. Four hub web openings 13 are provided around the hub web 12, and irregular curved flanges 14 are provided on the hub web 12, thereby effectively enlarging the hub web openings 13, facilitating the operation and installation by the staff, and effectively preventing the staff from being scratched or bumped.

[0053] Furthermore, in the wind turbine hub and blade splicing device of the present invention, the signal transmitting and receiving device 4 includes a first signal transmitting and receiving device 41, a second signal transmitting and receiving device 42, a third signal transmitting and receiving device 43, and a fourth signal transmitting and receiving device 44. The first signal transmitting and receiving device 41 and the second signal transmitting and receiving device 42 are fixed to the hub 1 vertically by bolts, and the third signal transmitting and receiving device 43 and the fourth signal transmitting and receiving device 44 are fixed to the hub 1 horizontally by bolts. The first signal transmitting and receiving device 41, the second signal transmitting and receiving device 42, the third signal transmitting and receiving device 43, and the fourth signal transmitting and receiving device 44 are respectively corresponding to the light hole 11, thereby ensuring that the blade 3 is controlled and adjusted by the signal transmitting and receiving device 4 during hoisting, thus improving the hoisting progress.

[0054] Furthermore, in the wind turbine hub and blade splicing device of the present invention, a blade root stud 31 is provided at the end of the blade 3, and the blade root stud 31 is matched with the light hole 11, which effectively ensures the connection of the blade 3.

[0055] Furthermore, in the wind turbine hub and blade splicing device of the present invention, a U-shaped slot 651 is provided at the top of the support arm 65. The U-shaped slot 651 matches the blade root stud 31. The U-shaped slot 651 abuts against the blade root stud 31, thereby effectively ensuring the verticality of the blade root stud 31 and facilitating the assembly of the blade 3 and the hub 1.

[0056] Furthermore, in the wind turbine hub and blade splicing device of the present invention, the limiting component 64 includes an end cap 641, a compression spring 642, a tongue-shaped piece 643, a first limiting block 645, and a second limiting block 646. The end cap 641 is fixed to one end of the mounting bracket 63 by bolts. One end of the compression spring 642 is welded to the middle of the end cap 641, and the other end of the compression spring 642 is welded to the tongue-shaped piece 643. The first limiting block 645 is fixed to the other end of the mounting bracket 63 by bolts, and the second limiting block 646 is welded to the end of the support arm 65 near the mounting bracket 63. This effectively ensures that the limiting component 64 can limit the support arm 65, making it easier to remove the blade root bolt support device 6.

[0057] Furthermore, in the wind turbine hub and blade splicing device of the present invention, the bottom of the tongue-shaped member 643 is provided with a guide groove 644, and the top of the first limiting block 645 is slidably connected to the guide groove 644, so that the tongue-shaped member 643 can be limited and extended within the mounting bracket 63.

[0058] Furthermore, in the wind turbine hub and blade splicing device of the present invention, a hollow hole 661 is provided in the middle of the hollow limiting block 66. The hollow hole 661 is matched with the tension spring 68. One end of the tension spring 68 is welded to the connecting block 67, and the other end of the tension spring 68 passes through the hollow hole 661 and is welded to the support arm 65. This effectively ensures that the support arm 65 can stop in the vertical position during the pull-back process of the tension spring 68.

[0059] Furthermore, in the wind turbine hub and blade splicing device of the present invention, a mounting platform 611 is welded to the top of the front end of the support bracket 61, and an elongated hole 612 is symmetrically arranged on the mounting platform 611. The support bracket 61 is fixed to the blade 3 by bolts passing through the elongated hole 612, thereby effectively ensuring that the support bracket can be adjusted in angle through the elongated hole 612.

[0060] Furthermore, in the wind turbine hub and blade splicing device of the present invention, two remote-controlled electric hoist assemblies 54 are symmetrically installed on one side of the sling assembly 52, and the output ends of the two remote-controlled electric hoist assemblies 54 are connected, thereby realizing that the blade 3 can be electrically controlled to adjust the angle through the remote-controlled electric hoist assemblies 54.

[0061] Specifically, such as Figure 1 As shown, when the blade 3 is docked with the hub 1, the support bracket 61 is fixed on the blade 3, making the support bracket 61 parallel to the blade root stud 31. At this time, the support arm 65 is in the initial state (i.e., the spring 68 rebounds and limits the support arm 65 through the hollow limit block 66, and the support arm 65 is vertical). However, the support arm 65 supports the blade root stud 31 through the U-shaped slot 651, ensuring the verticality of the blade root stud 31. At this time, the cable wind sheath 55 is sleeved on the front end of the blade 3, and then the output end of the remote control electric hoist assembly 54 is sleeved on the middle and rear end of the blade 3. The blade 3 is hoisted using the blade lifting device 5. During hoisting, the distance and distance difference between the vertical points of the blade 3 are received and judged by the first signal transmitting and receiving device 41 and the second signal transmitting and receiving device 42, and adjusted by controlling the lifting and lowering of the remote-controlled electric hoist assembly. The distance and distance difference between the horizontal points of the blade 3 end face are received and judged by the third signal transmitting and receiving device 43 and the fourth signal transmitting and receiving device 44, and adjusted by controlling the first guy rope 56 and the second guy rope 57. After adjustment, it is ensured that the blade root stud 31 corresponds to the optical aperture 11. Figure 7As shown, when the blade 3 approaches the pitch bearing 2, the pitch bearing 2 contacts the support arm 65, squeezing the support arm 65 and causing it to rotate toward the mounting bracket 63, thereby stretching the tension spring 68. When the second limiting block 646 contacts the tongue 643, the tongue 643 moves to the right and compresses the compression spring 642. When the support arm 65 continues to rotate to the right, the second limiting block 646 enters the lower end of the tongue 643, and the blade 3 and the hub 1 are connected. At the same time, the compression spring 642 quickly rebounds, keeping the support arm 65 at an inclined angle, which facilitates the removal of the blade root bolt support device 6 after the blade 3 is installed. At this time, the blade root stud 31 is bolted on through the opening 13 in the hub web.

[0062] In summary, compared with the prior art, the wind turbine hub and blade splicing device of the present invention has the following advantages and beneficial effects: When the blades are connected to the hub, the use of an electronic control method effectively avoids damage to the blade root threaded studs; the blade lifting device is equipped with an electric hoist that can work in conjunction with the hub device, realizing automatic adjustment of the blade connection angle at the blade root end, solving the problems of low efficiency, low operational safety factor, and easy damage to the blade surface caused by traditional hand-operated hoists; the designed irregular curved surface of the hub web solves the problems of small installation space for blade root bolts leading to installation accidents and the need for multiple pitch adjustments and time-consuming tightening of blade root bolts; the designed support device for the blade root bolt group solves the problem that the verticality of the blade root studs in large wind turbines cannot be guaranteed, causing the blades to be unable to be properly assembled and spliced ​​into the wind turbine.

[0063] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Meanwhile, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement states shown in the accompanying drawings.

[0064] Finally, 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 foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind turbine hub and blade splicing apparatus, characterized by, The wind turbine hub and blade splicing device comprises a hub, a variable pitch bearing, a blade, a signal transmitting and receiving device, a blade sling device and a blade root bolt supporting device, wherein: The variable pitch bearing is arranged on the hub, the blade end corresponds to the variable pitch bearing, the signal transmitting and receiving device is arranged on the variable pitch bearing, the blade sling device is used for hoisting the blade, the signal transmitting and receiving device is in signal connection with the blade sling device, and the blade root bolt supporting device is arranged at the blade end. The blade sling comprises a beam assembly, a sling assembly, a control cabinet assembly, a remote control electric hoist assembly, a cable wind sheath, a first cable wind rope and a second cable wind rope, the beam assembly is arranged at both ends of the sling assembly, the control cabinet assembly is arranged in the middle of the sling assembly and controls the remote control electric hoist assembly, the first cable wind rope and the second cable wind rope, the remote control electric hoist assembly is arranged on the sling assembly and hoisted at the rear end of the blade, the cable wind sheath is hoisted at the front end of the blade, and the first cable wind rope and the second cable wind rope are arranged at both ends of the cable wind sheath. The blade root bolt supporting device comprises a supporting bracket, an adjusting gasket, a mounting bracket, a limiting assembly, a supporting arm, a hollow limiting block, a connecting block and a tension spring, the adjusting gasket is arranged between the supporting bracket and the blade and adjusts the height of the supporting bracket, the mounting bracket is arranged in the middle of the supporting bracket, the limiting assembly is mounted on the mounting bracket, the supporting arm is rotatably arranged between the mounting bracket and the end of the supporting bracket, the hollow limiting block is arranged on the side of the supporting bracket close to the supporting arm, the connecting block is rotatably arranged at the top of the end of the supporting bracket, and the connecting block and the supporting arm are connected through the tension spring.

2. The wind turbine hub and blade splicing apparatus of claim 1, wherein, The hub is provided with a light hole, one side of the hub is provided with a hub web plate, four hub web plate openings are arranged around the hub web plate, and a special-shaped curved surface flange is arranged on the hub web plate.

3. The wind turbine hub and blade splicing apparatus of claim 2, wherein, The signal transmitting and receiving device comprises a first signal transmitting and receiving device, a second signal transmitting and receiving device, a third signal transmitting and receiving device and a fourth signal transmitting and receiving device, the first signal transmitting and receiving device and the second signal transmitting and receiving device are fixed on the hub in correspondence through bolts, the third signal transmitting and receiving device and the fourth signal transmitting and receiving device are fixed on the hub in correspondence through bolts, and the first signal transmitting and receiving device, the second signal transmitting and receiving device, the third signal transmitting and receiving device and the fourth signal transmitting and receiving device correspond to the light hole respectively.

4. The wind turbine hub and blade splicing apparatus of claim 2, wherein, The blade end is provided with a blade root stud, and the blade root stud matches the light hole.

5. The wind turbine hub and blade splicing apparatus of claim 4, wherein, The top of the supporting arm is provided with a U-shaped clamping groove, the U-shaped clamping groove matches the blade root stud, and the U-shaped clamping groove abuts against the blade root stud.

6. The wind turbine hub and blade splicing apparatus of claim 1, wherein, The limiting assembly comprises an end cover, a compression spring, a tongue-shaped piece, a first limiting block and a second limiting block, the end cover is fixed at one end of the mounting bracket by bolts, one end of the compression spring is welded with the middle part of the end cover, the other end of the compression spring is welded with the tongue-shaped piece, the first limiting block is fixed at the other end of the mounting bracket by bolts, and the second limiting block is welded at one end of the supporting arm close to the mounting bracket.

7. The wind turbine hub and blade splicing apparatus of claim 6, wherein, The bottom of the tongue-shaped piece is provided with a guide groove, and the top of the first limiting block is in sliding connection with the guide groove.

8. The wind turbine hub and blade splicing apparatus of claim 1, wherein, The middle part of the hollow limiting block is provided with a hollow hole matched with the tension spring, one end of the tension spring is welded with the connecting block, and the other end of the tension spring is welded with the supporting arm through the hollow hole.

9. The wind turbine hub and blade splicing apparatus of claim 1, wherein, The supporting bracket is provided with an installation table at the top of the front end, long circular holes are symmetrically arranged on the installation table, and the supporting bracket is fixed with the vane through the long circular holes by bolts.

10. The wind turbine hub and blade splicing apparatus of claim 1, wherein, The remote control electric hoist assembly is symmetrically arranged on one side of the sling assembly, and the output ends of the two remote control electric hoist assemblies are connected.

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