A fan hub hoisting, limiting and supporting system

Abstract

This application relates to the field of wind turbine hub hoisting technology, and in particular to a wind turbine hub hoisting limiting and support system, including a support mechanism and a limiting mechanism; the support mechanism includes a triangular support base and three load-bearing frames fixed in a triangular array on the upper surface of the triangular support base, and each of the three load-bearing frames has a support plate fixed on its upper surface; the limiting mechanism includes a limiting support ring fixed on the surface of the three support plates, and the upper surface of the limiting support ring has three limiting placement plates fixed in a circular row; by setting up the support mechanism and the limiting mechanism, the wind turbine hub can be effectively limited and supported during hoisting, and finally the wind turbine hub can be hoisted as a whole by the hoisting equipment's lifting rope and the three lifting lugs, thereby avoiding misalignment and swaying of the wind turbine hub during hoisting, effectively improving the safety and efficiency of the hoisting operation.

Description

Technical Field

[0001] This application relates to the field of wind turbine hub hoisting technology, and in particular to a wind turbine hub hoisting limiting and support system. Background Technology

[0002] The wind turbine hub is equipped with a pitch control system. The rotation of the pitch bearing is the core of the pitch control action. During the hub hoisting process, a reliable support structure is required after the hub is hoisted into place to ensure the safety of subsequent pitch control commissioning and other operations.

[0003] In existing technologies, the fit between the hub support assembly and the hub flange is often insufficient, resulting in poor stability after connection. This can easily lead to displacement or shaking, which not only affects subsequent operations but may also damage the pitch system due to limit failure or unstable support, thus reducing construction safety and efficiency.

[0004] Therefore, this application provides a wind turbine hub hoisting limiting and support system. Summary of the Invention

[0005] The purpose of this application is to solve at least one technical problem raised in the background art.

[0006] This application provides a wind turbine hub hoisting limiting and support system, including a support mechanism and a limiting mechanism;

[0007] The support mechanism includes a triangular support base and three load-bearing frames fixed in a triangular array on the upper surface of the triangular support base. Each of the three load-bearing frames has a support plate fixed on its upper surface.

[0008] The limiting mechanism includes a limiting support ring fixed to the surface of the three support plates. The upper surface of the limiting support ring is circumferentially fixed with three limiting placement plates, which are used to place the wind turbine hub.

[0009] Preferably, the upper surface of the triangular support base is fixedly provided with three support corner plates in a triangular array, and the surfaces of the three support corner plates are respectively fixedly connected to the surfaces of the three load-bearing frames.

[0010] By adopting the above technical solution, the stability of the load-bearing frame on the triangular support base can be effectively guaranteed under the action of the supporting corner plate.

[0011] Preferably, the upper surface of each of the three support plates is fixed with a lifting lug, which is connected to the lifting equipment by a lifting rope.

[0012] By adopting the above technical solution, the triangular support base can be lifted by three lifting lugs, which facilitates the hoisting of the wind turbine hub.

[0013] Preferably, the upper surface of the limiting plate is provided with four threaded mounting holes at equal intervals corresponding to the fan hub flange, and the internal threads of the threaded mounting holes are connected with locking bolts.

[0014] By adopting the above technical solution, the flange of the wind turbine hub can be effectively locked and limited to the limiting plate through the threaded mounting hole and the locking bolt.

[0015] Preferably, the outer ring surface of the limiting support ring is provided with a positioning mechanism, which includes three L-shaped positioning blocks arranged in a circular array on the outer ring surface of the limiting support ring. The three L-shaped positioning blocks are used to fix the flange of the wind turbine hub to the surface of the limiting placement plate.

[0016] By adopting the above technical solution, the flange of the wind turbine hub can be effectively limited to the surface of the three limiting placement plates by moving the three L-shaped positioning blocks inward.

[0017] Preferably, the positioning mechanism further includes three fixed cylinders arranged in a circumferential array and fixed on the outer surface of the limiting support ring, and an internally threaded cylinder slidably disposed on the inner wall of the fixed cylinder. The end of the internally threaded cylinder is fixedly connected to the surface of the L-shaped positioning block. The inner ring surface of the limiting support ring is provided with a drive motor for driving the three internally threaded cylinders to extend and retract synchronously. The outer ring surface of the inner ring surface of the limiting support ring is respectively provided with a charging power supply for supplying power to the drive motor and a button switch for controlling the drive motor.

[0018] By adopting the above technical solution, the drive motor can be started by a button switch, and the drive motor can drive the internal threaded cylinder to extend and retract automatically.

[0019] Preferably, the interior of the limiting support ring is an annular hollow structure, the inner wall of the fixed cylinder is rotatably provided with a threaded column, and the outer surface of the threaded column is threadedly connected to the inner wall of the inner threaded cylinder. The outer ring surface of the end of the inner threaded cylinder is fixed with four limiting sliders in a circumferential array, and the inner wall of the fixed cylinder is provided with a limiting groove for the limiting sliders to slide.

[0020] By adopting the above technical solution, the rotation of the threaded column can drive the internal threaded cylinder to automatically extend and retract, and the setting of the limiting slider and the limiting groove effectively ensures the stability of the internal threaded cylinder when it moves.

[0021] Preferably, the output end of the drive motor is fixedly provided with a rotating shaft extending into the interior of the limiting support ring. The end of the rotating shaft is fixedly connected to the end of a threaded column. The ends of the three threaded columns are all fixedly provided with first bevel gears. The inner bottom wall of the limiting support ring is rotatably provided with a bevel gear ring, and the three first bevel gears mesh with the bevel gear ring.

[0022] By adopting the above technical solution, the rotation of the drive motor can drive the rotating shaft to rotate, the rotation of the rotating shaft can drive the rotation of a threaded column, the rotation of the threaded column can drive the rotation of a first bevel gear, the rotation of the first bevel gear can drive the rotation of a bevel gear ring, and the rotation of the bevel gear ring can drive the other two first bevel gears to rotate synchronously, thereby driving the three threaded columns to rotate synchronously.

[0023] Preferably, the inner top wall of the L-shaped positioning block is provided with a clamping mechanism. The clamping mechanism includes a rectangular groove formed in the inner top wall of the L-shaped positioning block and a clamping block slidably disposed in the inner wall of the rectangular groove. Connecting blocks are fixed on both sides of the clamping block. Vertical grooves that slidably connect with the outer surface of the connecting blocks are formed on both sides of the inner wall of the rectangular groove. A limiting rod is fixed on the inner wall of the vertical groove, and a sliding hole that slidably connects with the surface of the limiting rod is formed on the surface of the connecting block.

[0024] By adopting the above technical solution, the stability of the clamping block during its up-and-down sliding can be effectively guaranteed under the action of the limiting rod and the connecting block.

[0025] Preferably, the clamping mechanism further includes a bidirectional lead screw rotatably disposed on the inner wall of the rectangular groove, and two symmetrical moving blocks are slidably disposed on the inner top wall of the rectangular groove. The sides of the two moving blocks are provided with threaded holes that are threadedly connected to the outer surface of the bidirectional lead screw. A connecting rod is rotatably disposed at the bottom end of the moving block, and the other end of the connecting rod is rotatably connected to the surface of the clamping block.

[0026] The L-shaped positioning block has a vertical cavity inside and a rectangular opening on its surface. One end of the bidirectional lead screw extends into the interior of the vertical cavity, and a vertical shaft extending into the rectangular opening is rotatably provided on the inner top wall of the vertical cavity. A second bevel gear that meshes with each other is fixed on the surface of both the end of the bidirectional lead screw and the surface of the vertical shaft. A toothed disc is fixed on the surface of the vertical shaft located inside the rectangular opening, and a straight rack corresponding to the toothed disc is fixed on the surface of the limiting placement plate.

[0027] By adopting the above technical solution, the meshing of the gear plate and the spur rack can drive the vertical shaft to rotate during the movement of the L-shaped positioning block. The rotation of the vertical shaft can drive the bidirectional lead screw to rotate automatically under the action of the two second bevel gears.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The wind turbine hub hoisting limiting and support system described in this application, by setting up a support mechanism and a limiting mechanism, allows the wind turbine hub to be placed on three limiting placement plates on the limiting support ring during hoisting. After the flange of the wind turbine hub is pressed against the three limiting placement plates and aligned with the threaded mounting holes, the locking bolts are tightened, thereby achieving effective limiting and support of the wind turbine hub. Finally, the wind turbine hub is hoisted as a whole by the hoisting equipment's lifting ropes and through the three lifting lugs, thus avoiding misalignment and shaking of the wind turbine hub during hoisting, effectively improving the safety and efficiency of the hoisting operation.

[0030] 2. The wind turbine hub hoisting limiting and support system described in this application, by setting a positioning mechanism, after the wind turbine hub is placed on three limiting placement plates, can start the drive motor by a button switch. The rotation of the drive motor drives the rotating shaft to rotate, the rotation of the rotating shaft drives a threaded column to rotate, the rotation of the threaded column drives a first bevel gear to rotate, the rotation of the first bevel gear drives a bevel gear ring to rotate, and the rotation of the bevel gear ring drives two other first bevel gears to rotate synchronously, thereby driving the three threaded columns to rotate synchronously. The rotation of the threaded columns causes the inner threaded cylinder to retract into the fixed cylinder, thereby driving the L-shaped positioning blocks to move inward, so that the three L-shaped positioning blocks can effectively limit and fix the flange of the wind turbine hub on the surface of the limiting placement plate, realizing automatic limiting of the wind turbine hub.

[0031] 3. The wind turbine hub hoisting limiting and support system described in this application, by setting a clamping mechanism, during the process of the L-shaped positioning block being moved inward by the drive motor, when the L-shaped positioning block moves to the designated position, the gear plate can mesh with the straight rack. At this time, the continued movement of the L-shaped positioning block can drive the gear plate and the vertical shaft to rotate automatically. The rotation of the vertical shaft drives the double-sided lead screw to rotate under the action of the two second bevel gears. The rotation of the double-sided lead screw drives the two moving blocks to move to both sides at the same time. The movement of the moving blocks can push the clamping block downward through the connecting rod, so that when the L-shaped positioning block moves inward to the maximum position, the clamping block moves downward to the maximum position and effectively presses and fixes the flange of the wind turbine hub to the surface of the limiting placement plate, effectively ensuring the stability of the wind turbine hub during hoisting. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0033] Figure 2 This is a second-view structural schematic diagram of Embodiment 1 of this application;

[0034] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this application;

[0035] Figure 4This is a top view of the structure of Embodiment 2 of this application;

[0036] Figure 5 This is a bottom view of the structure of Embodiment 2 of this application;

[0037] Figure 6 This is a schematic diagram of the cross-sectional structure of the limiting support ring in Embodiment 2 of this application;

[0038] Figure 7 This application Figure 6 Enlarged structural diagram at point A in the middle;

[0039] Figure 8 This application Figure 6 Enlarged structural diagram at point B.

[0040] Explanation of reference numerals in the attached figures:

[0041] 100. Support mechanism; 101. Triangular support base; 102. Load-bearing frame; 103. Support plate; 104. Support corner plate; 105. Lifting lug;

[0042] 200. Limiting mechanism; 201. Limiting support ring; 202. Limiting placement plate; 203. Threaded mounting hole;

[0043] 300. Positioning mechanism; 301. L-shaped positioning block; 302. Fixed cylinder; 303. Internal threaded cylinder; 304. Drive motor; 305. Charging power supply; 306. Push button switch; 307. Threaded column; 308. Limiting slider; 309. Rotating shaft; 3010. First bevel gear; 3011. Bevel gear ring;

[0044] 400. Clamping mechanism; 401. Clamping block; 402. Connecting block; 403. Limiting rod; 404. Two-way lead screw; 405. Moving block; 406. Connecting rod; 407. Vertical shaft; 408. Second bevel gear; 409. Gear disc; 4010. Straight rack. Detailed Implementation

[0045] The following combination Figures 1 to 8 This application will be described in further detail below.

[0046] Example 1

[0047] Please refer to the following carefully. Figure 1 , Figure 2A wind turbine hub hoisting limiting and support system includes a support mechanism 100 and a limiting mechanism 200. The support mechanism 100 includes a triangular support base 101 and three load-bearing frames 102 fixed in a triangular array on the upper surface of the triangular support base 101. Each of the three load-bearing frames 102 has a support plate 103 fixed on its upper surface. The limiting mechanism 200 includes a limiting support ring 201 fixed on the surface of the three support plates 103. The upper surface of the limiting support ring 201 has three limiting placement plates 202 fixed in a circumferential row. The three limiting placement plates 202 are used to place the wind turbine hub.

[0048] Please refer to this carefully. Figure 1 , Figure 2 The upper surface of the triangular support base 101 is fixed with three support corner plates 104 in a triangular array, and the surfaces of the three support corner plates 104 are respectively fixedly connected to the surfaces of the three load-bearing frames 102.

[0049] Specifically, the support angle plate 104 effectively ensures the stability of the load-bearing frame 102 on the triangular support base 101.

[0050] Please refer to this carefully. Figure 1 , Figure 2 The upper surfaces of the three support plates 103 are all fixed with lifting lugs 105, which are connected to the lifting equipment by lifting ropes.

[0051] Specifically, the triangular support base 101 can be lifted by the three lifting lugs 105, which facilitates the hoisting of the wind turbine hub.

[0052] Please refer to this carefully. Figure 1 , Figure 2 The upper surface of the limiting plate 202 is provided with four threaded mounting holes 203 that correspond to the fan hub flange, and the internal threads of the threaded mounting holes 203 are connected with locking bolts.

[0053] Specifically, the flange of the wind turbine hub can be effectively locked and limited to the limiting plate 202 through the threaded mounting hole 203 and the locking bolt.

[0054] In this embodiment, by setting up a support mechanism 100 and a limiting mechanism 200, when hoisting the wind turbine hub, the wind turbine hub can be placed on the three limiting placement plates 202 on the limiting support ring 201. After the flange of the wind turbine hub is pressed against the three limiting placement plates 202 and corresponds to the threaded mounting holes 203, the locking bolts are tightened, which can effectively limit and support the wind turbine hub. Finally, the wind turbine hub is hoisted as a whole by the hoisting equipment's lifting rope and the three lifting lugs 105, thereby avoiding misalignment and shaking of the wind turbine hub during hoisting, effectively improving the safety and efficiency of the hoisting operation.

[0055] Example 2

[0056] Based on Example 1, referring to Figures 3 to 8 And unlike Example 1, the following is true:

[0057] Please refer to this carefully. Figure 4 , Figure 5 The outer ring surface of the limiting support ring 201 is provided with a positioning mechanism 300. The positioning mechanism 300 includes three L-shaped positioning blocks 301 arranged in a circular array on the outer ring surface of the limiting support ring 201. The three L-shaped positioning blocks 301 are used to fix the flange of the wind turbine hub to the surface of the limiting placement plate 202.

[0058] Specifically, the flange of the wind turbine hub can be effectively limited on the surface of the three limiting placement plates 202 by moving the three L-shaped positioning blocks 301 inward.

[0059] Please refer to this carefully. Figure 4 , Figure 5 The positioning mechanism 300 also includes three fixed cylinders 302 arranged in a circumferential array and fixed on the outer surface of the limiting support ring 201, and an internally threaded cylinder 303 slidably disposed on the inner wall of the fixed cylinder 302. The end of the internally threaded cylinder 303 is fixedly connected to the surface of the L-shaped positioning block 301. The inner ring surface of the limiting support ring 201 is provided with a drive motor 304 for driving the three internally threaded cylinders 303 to extend and retract synchronously. The outer ring surface of the inner ring surface of the limiting support ring 201 is respectively provided with a charging power supply 305 for supplying power to the drive motor 304 and a push-button switch 306 for controlling the drive motor 304.

[0060] Specifically, the drive motor 304 can be started by the button switch 306, and the drive motor 304 can drive the internal threaded cylinder 303 to extend and retract automatically.

[0061] Please refer to this carefully. Figure 6 , Figure 7 The interior of the limiting support ring 201 is a hollow annular structure. The inner wall of the fixed cylinder 302 is rotatably provided with a threaded post 307, and the outer surface of the threaded post 307 is threadedly connected to the inner wall of the inner threaded cylinder 303. The outer annular surface of the end of the inner threaded cylinder 303 is fixed with four limiting sliders 308 in a circumferential array, and the inner wall of the fixed cylinder 302 is provided with a limiting groove for the limiting sliders 308 to slide.

[0062] Specifically, the rotation of the threaded column 307 can drive the internal threaded cylinder 303 to automatically extend and retract, and the setting of the limiting slider 308 and the limiting groove effectively ensures the stability of the internal threaded cylinder 303 when it moves.

[0063] Please refer to this carefully. Figure 6 , Figure 7The output end of the drive motor 304 is fixedly provided with a rotating shaft 309 extending into the interior of the limiting support ring 201. The end of the rotating shaft 309 is fixedly connected to the end of a threaded post 307. The ends of the three threaded posts 307 are all fixedly provided with first bevel gears 3010. The inner bottom wall of the limiting support ring 201 is rotatably provided with a bevel gear ring 3011, and the three first bevel gears 3010 mesh with the bevel gear ring 3011.

[0064] Specifically, the rotation of the drive motor 304 can drive the rotating shaft 309 to rotate, the rotation of the rotating shaft 309 can drive a threaded column 307 to rotate, the rotation of the threaded column 307 can drive a first bevel gear 3010 to rotate, the rotation of the first bevel gear 3010 can drive a bevel gear ring 3011 to rotate, and the rotation of the bevel gear ring 3011 can drive two other first bevel gears 3010 to rotate synchronously, thereby driving the three threaded columns 307 to rotate synchronously.

[0065] In this invention, by setting a positioning mechanism 300, after the wind turbine hub is placed on the three limiting placement plates 202, the drive motor 304 can be started by the button switch 306. The rotation of the drive motor 304 drives the rotating shaft 309 to rotate, the rotation of the rotating shaft 309 drives a threaded column 307 to rotate, the rotation of the threaded column 307 drives a first bevel gear 3010 to rotate, the rotation of the first bevel gear 3010 drives a bevel gear ring 3011 to rotate, and the rotation of the bevel gear ring 3011 drives two other first bevel gears 3010 to rotate synchronously. This drives the three threaded columns 307 to rotate synchronously. The rotation of the threaded columns 307 causes the inner threaded cylinder 303 to retract into the fixed cylinder 302, thereby driving the L-shaped positioning block 301 to move inward. This allows the three L-shaped positioning blocks 301 to effectively limit and fix the flange of the wind turbine hub on the surface of the limiting placement plate 202, realizing automatic limiting of the wind turbine hub.

[0066] Please refer to this carefully. Figure 5 , Figure 6 The inner top wall of the L-shaped positioning block 301 is provided with a clamping mechanism 400. The clamping mechanism 400 includes a rectangular groove formed in the inner top wall of the L-shaped positioning block 301, and a clamping block 401 slidably disposed in the inner wall of the rectangular groove. Connecting blocks 402 are fixedly provided on both sides of the clamping block 401. Vertical grooves that are slidably connected to the outer surface of the connecting block 402 are formed on both sides of the inner wall of the rectangular groove. A limiting rod 403 is fixedly provided on the inner wall of the vertical groove, and a sliding hole that is slidably connected to the surface of the limiting rod 403 is formed on the surface of the connecting block 402.

[0067] Specifically, the stability of the abutment block 401 during its up-and-down sliding is effectively ensured by the action of the limit rod 403 and the connecting block 402.

[0068] Please refer to this carefully.Figure 6 , Figure 8 The clamping mechanism 400 also includes a bidirectional lead screw 404 rotatably disposed on the inner wall of the rectangular groove. Two symmetrical moving blocks 405 are slidably disposed on the inner top wall of the rectangular groove, and the sides of the two moving blocks 405 are provided with threaded holes that are threadedly connected to the outer surface of the bidirectional lead screw 404. A connecting rod 406 is rotatably disposed at the bottom end of the moving block 405, and the other end of the connecting rod 406 is rotatably connected to the surface of the clamping block 401.

[0069] The L-shaped positioning block 301 has a vertical cavity inside, and a rectangular opening is formed on the surface of the L-shaped positioning block 301. One end of the bidirectional lead screw 404 extends into the interior of the vertical cavity, and a vertical shaft 407 extending into the rectangular opening is rotatably provided on the inner top wall of the vertical cavity. A second bevel gear 408 that meshes with each other is fixed on the surface of the bidirectional lead screw 404 and the vertical shaft 407. A gear plate 409 is fixed on the surface of the vertical shaft 407 located inside the rectangular opening, and a straight rack 4010 corresponding to the gear plate 409 is fixed on the surface of the limiting placement plate 202.

[0070] Specifically, the meshing of the gear plate 409 and the rack 4010 enables the vertical shaft 407 to rotate during the movement of the L-shaped positioning block 301. The rotation of the vertical shaft 407, under the action of the two second bevel gears 408, drives the bidirectional lead screw 404 to rotate automatically.

[0071] In this invention, by setting a clamping mechanism 400, during the process of the L-shaped positioning block 301 moving inward driven by the drive motor 304, when the L-shaped positioning block 301 moves to the designated position, the gear disk 409 can mesh with the straight rack 4010. At this time, the continued movement of the L-shaped positioning block 301 can drive the gear disk 409 and the vertical shaft 407 to rotate automatically. The rotation of the vertical shaft 407 drives the bidirectional lead screw 404 to rotate under the action of the two second bevel gears 408. The rotation of the bidirectional lead screw 404 drives the two moving blocks 405 to move to both sides at the same time. The movement of the moving blocks 405 can push the clamping block 401 downward through the connecting rod 406, so that when the L-shaped positioning block 301 moves inward to the maximum position, the clamping block 401 moves downward to the maximum position and effectively presses and fixes the flange of the wind turbine hub to the surface of the limiting placement plate 202, effectively ensuring the stability of the wind turbine hub during hoisting.

[0072] The working principle of this embodiment is as follows:

[0073] After the wind turbine hub is placed on the three limiting plates 202, the drive motor 304 can be started by the button switch 306. The rotation of the drive motor 304 drives the rotating shaft 309 to rotate, which in turn drives a threaded post 307 to rotate. The rotation of the threaded post 307 drives a first bevel gear 3010 to rotate, which in turn drives a bevel gear ring 3011 to rotate. The rotation of the bevel gear ring 3011 drives two other first bevel gears 3010 to rotate synchronously, thereby driving the three threaded posts 307 to rotate synchronously. The rotation of the threaded posts 307 causes the inner threaded cylinder 303 to retract into the fixed cylinder 302, thereby causing the L-shaped positioning blocks 301 to move inward. This allows the three L-shaped positioning blocks 301 to effectively limit and fix the flange of the wind turbine hub on the surface of the limiting plates 202, realizing the self-positioning of the wind turbine hub. The device features a dynamic limit switch. Furthermore, as the L-shaped positioning block 301 moves inward via the drive motor 304, once it reaches the designated position, the gear 409 meshes with the rack 4010. The continued movement of the L-shaped positioning block 301 then causes the gear 409 and vertical shaft 407 to rotate automatically. The rotation of the vertical shaft 407, under the action of the two second bevel gears 408, drives the bidirectional lead screw 404 to rotate. The rotation of the bidirectional lead screw 404 causes the two moving blocks 405 to move simultaneously to both sides. The movement of the moving blocks 405, through the connecting rod 406, pushes the clamping block 401 downward, causing the L-shaped positioning block 301 to move inward to its maximum position. At this point, the clamping block 401 moves downward to its maximum position, effectively pressing and fixing the flange of the wind turbine hub onto the surface of the limit plate 202, thus ensuring the stability of the wind turbine hub during hoisting.

Claims

1. A wind turbine hub hoisting, limiting, and supporting system, characterized in that, Includes a support mechanism (100) and a limiting mechanism (200); The support mechanism (100) includes a triangular support base (101) and three load-bearing frames (102) fixed in a triangular array on the upper surface of the triangular support base (101). The upper surface of each of the three load-bearing frames (102) is fixed with a support plate (103). The limiting mechanism (200) includes a limiting support ring (201) fixed on the surface of the three support plates (103). The upper surface of the limiting support ring (201) is circumferentially fixed with three limiting placement plates (202). The three limiting placement plates (202) are used to place the wind turbine hub.

2. The wind turbine hub hoisting limiting and support system according to claim 1, characterized in that, The upper surface of the triangular support base (101) is fixedly provided with three support corner plates (104) in a triangular array, and the surfaces of the three support corner plates (104) are respectively fixedly connected to the surfaces of the three load-bearing frames (102).

3. The wind turbine hub hoisting limiting and support system according to claim 1, characterized in that, The upper surfaces of the three support plates (103) are all fixed with lifting lugs (105), which are connected to the lifting equipment by lifting ropes.

4. The wind turbine hub hoisting limiting and support system according to claim 1, characterized in that, The upper surface of the limiting plate (202) is provided with four threaded mounting holes (203) that correspond to the wind turbine hub flange, and the threaded mounting holes (203) are internally threaded with locking bolts.

5. The wind turbine hub hoisting limiting and support system according to claim 1, characterized in that, The outer ring surface of the limiting support ring (201) is provided with a positioning mechanism (300). The positioning mechanism (300) includes three L-shaped positioning blocks (301) arranged in a circular array on the outer ring surface of the limiting support ring (201). The three L-shaped positioning blocks (301) are used to fix the flange of the wind turbine hub to the surface of the limiting placement plate (202).

6. The wind turbine hub hoisting limiting and support system according to claim 5, characterized in that, The positioning mechanism (300) further includes three fixed cylinders (302) arranged in a circumferential array and fixed on the outer surface of the limiting support ring (201), and an internally threaded cylinder (303) slidably disposed on the inner wall of the fixed cylinder (302). The end of the internally threaded cylinder (303) is fixedly connected to the surface of the L-shaped positioning block (301). The inner ring surface of the limiting support ring (201) is provided with a drive motor (304) for driving the three internally threaded cylinders (303) to extend and retract synchronously. The outer ring surface of the inner ring surface of the limiting support ring (201) is respectively provided with a charging power supply (305) for supplying power to the drive motor (304) and a push-button switch (306) for controlling the drive motor (304).

7. The wind turbine hub hoisting limiting and support system according to claim 6, characterized in that, The interior of the limiting support ring (201) is an annular hollow structure. The inner wall of the fixed cylinder (302) is rotatably provided with a threaded column (307), and the outer surface of the threaded column (307) is threadedly connected to the inner wall of the inner threaded cylinder (303). The outer ring surface of the end of the inner threaded cylinder (303) is fixed with four limiting sliders (308) in a circumferential array, and the inner wall of the fixed cylinder (302) is provided with a limiting groove for the limiting sliders (308) to slide.

8. The wind turbine hub hoisting limiting and support system according to claim 7, characterized in that, The output end of the drive motor (304) is fixedly provided with a rotating shaft (309) extending into the interior of the limiting support ring (201). The end of the rotating shaft (309) is fixedly connected to the end of a threaded column (307). The ends of the three threaded columns (307) are all fixedly provided with first bevel gears (3010). The inner bottom wall of the limiting support ring (201) is rotatably provided with a bevel gear ring (3011), and the three first bevel gears (3010) mesh with the bevel gear ring (3011).

9. A wind turbine hub hoisting limiting and support system according to claim 8, characterized in that, The inner top wall of the L-shaped positioning block (301) is provided with a clamping mechanism (400). The clamping mechanism (400) includes a rectangular groove opened in the inner top wall of the L-shaped positioning block (301) and a clamping block (401) slidably disposed in the inner wall of the rectangular groove. Both sides of the clamping block (401) are fixed with connecting blocks (402). Both sides of the inner wall of the rectangular groove are provided with vertical grooves that are slidably connected to the outer surface of the connecting blocks (402). The inner wall of the vertical groove is fixed with a limiting rod (403), and the surface of the connecting block (402) is provided with a sliding hole that is slidably connected to the surface of the limiting rod (403).

10. A wind turbine hub hoisting limiting and support system according to claim 9, characterized in that, The clamping mechanism (400) further includes a bidirectional lead screw (404) rotatably disposed on the inner wall of the rectangular groove. Two symmetrical moving blocks (405) are slidably disposed on the inner top wall of the rectangular groove. The sides of the two moving blocks (405) are provided with threaded holes that are threaded to the outer surface of the bidirectional lead screw (404). A connecting rod (406) is rotatably disposed at the bottom end of the moving block (405), and the other end of the connecting rod (406) is rotatably connected to the surface of the clamping block (401). The L-shaped positioning block (301) has a vertical cavity inside, and a rectangular opening is provided on the surface of the L-shaped positioning block (301). One end of the bidirectional lead screw (404) extends into the interior of the vertical cavity, and a vertical shaft (407) extending into the rectangular opening is rotatably provided on the inner top wall of the vertical cavity. A second bevel gear (408) meshing with each other is fixed on the surface of the bidirectional lead screw (404) and the vertical shaft (407). A gear plate (409) is fixed on the surface of the vertical shaft (407) located inside the rectangular opening, and a straight rack (4010) corresponding to the gear plate (409) is fixed on the surface of the limiting placement plate (202).

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