A roll-over hoist system for a wind turbine tower crane

Abstract

This invention discloses a tilting and hoisting system for a wind turbine tower crane, belonging to the field of stainless steel plate processing technology. The system includes a wind turbine cover fixedly installed on the tower. A lifting platform for supporting the hoisting system is provided on the surface of the wind turbine cover. An adjusting disc is rotatably connected to the center of the upper and lower surfaces of the lifting platform via the same shaft. A lifting boom is installed at the position of the adjusting disc. Two symmetrically arranged guide support plates are fixedly connected to the bottom inner side of the lifting boom. This invention, by incorporating a windproof duct structure, can fully elevate the hoisted object to a position above the lifting platform without manual dragging, reducing the labor intensity of hoisting work. Furthermore, when the windproof duct structure is retracted, the lifting tension cable can be folded, and the cable winding reel continues to wind, improving hoisting efficiency.

Description

Technical Field

[0001] This invention belongs to the field of crane structures, specifically relating to a tilting and hoisting system for a crane on a wind turbine tower. Background Technology

[0002] Wind turbines use wind energy to drive the rotor blades to rotate, converting wind energy into mechanical energy. The rotor shaft is connected to the rotor, causing the rotor to rotate. The magnetic field generated by the rotor's rotation passes through the coils, generating electrical energy through the principle of electromagnetic induction, thus realizing the conversion from wind energy to mechanical energy and then to electrical energy.

[0003] In existing technologies, the construction of wind turbines requires fixing the nacelle to the tower and then installing the corresponding turbine shaft, rotor, generator, and related control system inside the nacelle. These components need to be installed by lifting. Traditional lifting installations often use cranes or gantry cranes. The crane is usually fixed at the nacelle location and then lifted by the crane. This lifting structure results in the lifted goods being located below the lifting platform, requiring manual labor to pull the load up, which is labor-intensive and poses certain safety hazards. Furthermore, manual dragging can cause the lifted goods to collide with the nacelle, causing damage. When the lifted goods are level with the nacelle, strong winds can also cause collisions. While gantry cranes are convenient for assembling small wind turbines, their booms are not long enough for assembling large wind turbines, which presents certain limitations. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a hoisting device that is stable in lifting and easy to assemble.

[0005] The technical solution adopted to solve the above technical problems is: a tilting and hoisting system for a wind turbine tower crane, including a wind turbine cover fixedly installed on the tower, a hoisting platform for supporting the hoisting system on the surface of the wind turbine cover, an adjusting disc rotatably connected to the center of the upper and lower surfaces of the hoisting platform through the same shaft, and a hoisting boom installed at the position of the adjusting disc.

[0006] Through the above technical solutions, the fan cover can fix and protect the hoisted object, the adjustable rotating plate can rotate on the surface of the hoisting platform, making it convenient to place the hoisted object on the surface of the hoisting platform without the need for manual dragging of the hoisted object, reducing labor intensity and making the hoisting work safer, and the hoisting boom can expand the working range and hoist and rotate the hoisted object.

[0007] Two symmetrically arranged guide support plates are fixedly connected to the bottom inner side of the lifting boom, and a windproof duct structure is provided on the side of the lifting boom away from the lifting platform to prevent it from swaying in the wind.

[0008] Through the above technical solution, the guide support plate can support the installation of the windproof duct structure. The windproof duct structure can effectively prevent the hoisted object from colliding with the fan cover under the action of wind force when it rises to be parallel with the fan cover, making the hoisted object safer during the hoisting process.

[0009] Furthermore, the windproof duct structure includes a windproof duct body. The top of the windproof duct body away from the lifting platform and the bottom of the windproof duct body near the lifting platform are both provided with notches, and support guide wheels are fixedly installed at the notches. Two symmetrically arranged rotating guard plates are rotatably connected to the upper part of the outer wall of the windproof duct body, and guide support shafts are rotatably connected through the rotating guard plates.

[0010] Through the above technical solution, the main body of the windproof duct can pass through the lifting tension steel cable. The lifting tension steel cable inside the main body of the windproof duct will not sway in a large range. When the main body of the windproof duct is retracted, the lifting tension steel cable will not rub against the opening of the main body of the windproof duct, effectively protecting the lifting tension steel cable. The rotating guard plate ensures that the main body of the windproof duct is always installed in the position of the guide support plate.

[0011] Furthermore, guide grooves are provided on the inner sides of both guide support plates, and the two ends of the guide support shaft are slidably connected to the inner walls of the guide grooves at the corresponding positions.

[0012] Through the above technical solution, the guide arc groove can guide the sliding when the guide support shaft is pulled, so that the windproof duct body and the corresponding horizontal positioning reinforcing rib slide and rub against each other, pulling the windproof duct body into the lifting arm, so that the lifted object is further pulled up. When the windproof duct body is pulled back into the lifting arm, the lifting tension cable will fold at the lifting arm position, and at this time the cable winding wheel continues to wind up the lifting tension cable, effectively improving the lifting speed of the lifted object.

[0013] Furthermore, a steel cable winding wheel is fixedly connected to the middle of the upper surface of the lifting platform away from the lifting boom. A second guide wheel is fixedly connected to the upper surface of the lifting platform away from the steel cable winding wheel. A third guide wheel is fixedly connected to the inner top wall of the lifting boom away from the steel cable winding wheel and located directly above the windproof duct structure. A reduction motor is fixedly connected to the upper surface of the lifting platform near the steel cable winding wheel, and the output end of the reduction motor is fixedly connected to the shaft of the steel cable winding wheel.

[0014] Through the above technical solution, the steel cable winding wheel can rotate forward and backward under the power of the geared motor, which can realize the winding or unwinding of the suspended tension steel cable. The second guide wheel and the third guide wheel can support and guide the suspended tension steel cable, making the winding or unwinding of the suspended tension steel cable more stable and preventing slippage friction, thus effectively protecting the suspended tension steel cable.

[0015] Furthermore, a lifting tension steel cable is wound and fixedly connected to the position of the steel cable winding wheel. The end of the lifting tension steel cable away from the steel cable winding wheel passes through the lower position of the second guide wheel, then through the upper position of the third guide wheel, and then through the main body of the windproof duct and is fixedly connected to a hook.

[0016] The above technical solution allows the hook at the position of the lifting tension cable to fix the object being lifted and to lift or lower it.

[0017] Furthermore, a rotating base is fixedly connected to the surface of the adjusting rotating disk, the lifting arm is rotatably connected to the rotating base, and a number of evenly distributed arm reinforcing ribs are fixedly connected to the bottom of the lifting arm, the outer wall of the arm reinforcing ribs being covered with a graphite coating.

[0018] Through the above technical solution, the rotating base allows the lifting boom to rotate, which in turn raises the object to the top of the lifting platform, effectively reducing the labor intensity of the lifting work. The reinforcing ribs of the boom make the lifting boom stronger and more adaptable to the weight of the object being lifted. The graphite coating provides smooth lubrication when the windproof duct body rubs against it, and the graphite coating is also more wear-resistant.

[0019] Furthermore, a cable through hole is provided on the upper surface of the adjusting rotary disk near the cable winding wheel, a fourth guide wheel is fixedly connected to the upper surface of the adjusting rotary disk at the position of the cable through hole, a first guide wheel is fixedly connected to the lower surface of the adjusting rotary disk at the position of the cable through hole, and an adjusting winch is fixedly connected to the middle position of the lower surface of the adjusting rotary disk.

[0020] Through the above technical solution, the lifting platform is provided with a 90-degree symmetrical through slot at the position of the steel cable through hole, so that the adjusting disc will not jam the tension lifting steel cable when it is rotated. The fourth guide wheel and the first guide wheel have the function of supporting and guiding the tension lifting steel cable, so that the tension lifting steel cable runs smoothly. The adjusting winch can wind up the tension lifting steel cable, and when the guide support shaft moves to the side of the guide arc groove near the fourth guide wheel, the lifting boom will flip upward to further stretch the lifted object. When the adjusting winch rotates in the opposite direction, the windproof duct body will reset under the action of gravity.

[0021] Furthermore, the adjustable winch turntable is wound and fixedly connected with a tension lifting steel cable. The end of the tension lifting steel cable away from the adjustable winch passes under the first guide wheel, then passes through the steel cable through hole and passes over the position above the fourth guide wheel. The end of the tension lifting steel cable away from the adjustable winch is rotatably connected to the guide support shaft through a rotating ring.

[0022] Furthermore, two symmetrically arranged fixed support arms are rotatably connected to both sides of the lifting platform. Each of the two fixed support arms has a clamping groove at both ends. The thickness of the clamping groove is greater than the thickness of the side wall of the fan cover. A lifting groove is provided on the upper surface of the lifting platform below the lifting arm. Several evenly distributed horizontal positioning reinforcing ribs are fixedly connected to the lower surface of the lifting platform.

[0023] Through the above technical solution, the fixed support arm makes the stress on the wind turbine cover of the lifting platform more evenly distributed, avoiding stress concentration that could damage the wind turbine cover. The lifting groove allows the lifted object to pass through this position and rise to the top of the lifting platform.

[0024] The beneficial effects of the present invention are as follows: (1) By setting up a windproof duct structure, the part of the lifting tension steel cable located in the fan cover can be protected, so that it will not sway in a large range under the action of wind force, and will not hit the fan cover due to wind force when the object is lifted, thus effectively protecting the object and the fan cover; (2) By cooperating with the guide support plate, the windproof duct structure can be stored and folded into the lifting arm when the object is pulled up to the bottom of the windproof duct structure. When the windproof duct structure is stored and folded, the lifting tension steel cable will also be retracted and folded. During the folding process, the lifting tension steel cable will continue to be wound, which effectively improves the lifting efficiency of the object and can be lifted to the position above the lifting platform. When the object is flush with the fan cover, it does not need to be manually dragged, which reduces the labor intensity of the lifting and improves the safety of the lifting; (3) The overall structure of the present invention is a split assembly structure, which can carry many parts separately into the fan cover for assembly. It is simple and convenient to use and highly adaptable. Attached Figure Description

[0025] Figure 1 This is a first-view structural diagram of a tilting and hoisting system for a wind turbine tower crane according to the present invention;

[0026] Figure 2 This is a second-view structural diagram of a tilting and hoisting system for a wind turbine tower crane according to the present invention;

[0027] Figure 3 This is a first-view structural diagram of the lifting platform of a tilting and lifting system for a wind turbine tower crane according to the present invention;

[0028] Figure 4 This is a second-view structural diagram of the lifting platform of a tilting and lifting system for a wind turbine tower crane according to the present invention;

[0029] Figure 5 This is a structural diagram of the lifting boom of a tilting and hoisting system for a wind turbine tower crane according to the present invention;

[0030] Figure 6 This is a diagram of the lifting boom of a tilting and hoisting system for a wind turbine tower crane according to the present invention;

[0031] Figure 7 This is a three-dimensional structural diagram of a windproof duct for a tilting and hoisting system for a wind turbine tower crane according to the present invention.

[0032] Reference numerals: 1. Fan cover; 2. Lifting platform; 3. Lifting boom; 4. Windproof duct structure; 40. Windproof duct main body; 41. Support guide wheel; 42. Rotating guard plate; 43. Guide support shaft; 5. Lifting tension cable; 6. Cable winding wheel; 7. Gear motor; 8. Fixed support arm; 9. Adjusting rotating disc; 10. Adjusting winch; 11. First guide wheel; 12. Horizontal positioning reinforcing rib; 13. Boom reinforcing rib; 14. Guide support plate; 15. Tensioning lifting cable; 16. Second guide wheel; 17. Third guide wheel; 18. Guide arc groove; 19. Clamping groove; 20. Lifting groove; 21. Fourth guide wheel; 22. Cable through hole; 23. Rotating base. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] like Figure 1-7 As shown in the figure, a tilting and hoisting system for a wind turbine tower crane in this embodiment includes a wind turbine cover 1 fixedly installed on the tower. A hoisting platform 2 for supporting the hoisting system is provided on the surface of the wind turbine cover 1. An adjusting rotating disk 9 is rotatably connected to the center of the upper and lower surfaces of the hoisting platform 2 via the same shaft. A hoisting boom 3 is installed at the position of the adjusting rotating disk 9. The wind turbine cover 1 can fix and protect the hoisted object. The adjusting rotating disk 9 can rotate on the surface of the hoisting platform 2, which makes it convenient to place the hoisted object on the surface of the hoisting platform 2 without the need for manual dragging of the hoisted object, reducing labor intensity and making the hoisting work safer. The hoisting boom 3 can expand the working range and lift and rotate the hoisted object.

[0035] Two symmetrically arranged fixed support arms 8 are rotatably connected to both sides of the lifting platform 2. Each fixed support arm 8 has a clamping groove 19 at both ends. The thickness of the clamping groove 19 is greater than the thickness of the side wall of the fan cover 1. A lifting groove 20 is provided on the upper surface of the lifting platform 2 below the lifting arm 3. Several evenly distributed horizontal positioning reinforcing ribs 12 are fixedly connected to the lower surface of the lifting platform 2. The fixed support arms 8 make the stress on the fan cover 1 of the lifting platform 2 more evenly distributed, avoiding stress concentration and damage to the fan cover 1. The lifting groove 20 allows the lifted object to pass through this position and rise to the upper position of the lifting platform 2.

[0036] A cable through hole 22 is provided on the upper surface of the adjusting rotary disk 9 near the cable winding wheel 6. A fourth guide wheel 21 is fixedly connected to the upper surface of the adjusting rotary disk 9 at the position of the cable through hole 22. A first guide wheel 11 is fixedly connected to the lower surface of the adjusting rotary disk 9 at the position of the cable through hole 22. An adjusting winch 10 is fixedly connected to the middle of the lower surface of the adjusting rotary disk 9. A 90-degree symmetrical through slot is provided on the lifting platform 2 at the position of the cable through hole 22 to prevent the adjusting rotary disk 9 from getting stuck during rotation adjustment. The tension lifting cable 15, the fourth guide wheel 21, and the first guide wheel 11 provide support and guidance for the tension lifting cable 15, ensuring smooth operation of the tension lifting cable 15. The adjustable winch 10 can wind up the tension lifting cable 15. When the guide support shaft 43 moves to the guide arc groove 18 near the fourth guide wheel 21, the lifting boom 3 will flip upward to further stretch the lifted object. When the adjustable winch 10 rotates in the opposite direction, the windproof duct body 40 will reset under the action of gravity.

[0037] The turntable position of the adjusting winch 10 is fixedly connected with a tension lifting steel cable 15. The end of the tension lifting steel cable 15 away from the adjusting winch 10 passes under the first guide wheel 11, then passes through the steel cable through hole 22 and passes over the position above the fourth guide wheel 21. The end of the tension lifting steel cable 15 away from the adjusting winch 10 is rotatably connected to the guide support shaft 43 through a rotating ring.

[0038] A cable winding wheel 6 is fixedly connected to the middle of the upper surface of the lifting platform 2 on the side away from the lifting boom 3. A second guide wheel 16 is fixedly connected to the upper surface of the lifting platform 2 on the side away from the cable winding wheel 6. A third guide wheel 17 is fixedly connected to the inner top wall of the lifting boom 3 on the side away from the cable winding wheel 6 and directly above the windproof duct structure 4. A reduction motor 7 is fixedly connected to the upper surface of the lifting platform 2 on the side close to the cable winding wheel 6. The output end of the reduction motor 7 is fixedly connected to the rotating shaft of the cable winding wheel 6. The cable winding wheel 6 rotates forward and backward under the power of the reduction motor 7, which can realize the winding or unwinding of the lifting tension cable 5. The second guide wheel 16 and the third guide wheel 17 can support and guide the lifting tension cable 5, making the winding or unwinding of the lifting tension cable 5 more stable and preventing slippage friction, effectively protecting the lifting tension cable 5.

[0039] A lifting tension cable 5 is wound and fixedly connected to the cable winding reel 6. The end of the lifting tension cable 5 away from the cable winding reel 6 passes below the second guide wheel 16, then above the third guide wheel 17, and then through the windproof duct body 40 and is fixedly connected to a hook. The hook at the position of the lifting tension cable 5 can fix the suspended object and lift or lower the suspended object.

[0040] Two symmetrically arranged guide support plates 14 are fixedly connected to the bottom inner side of the lifting boom 3. A windproof duct structure 4 is provided on the side of the lifting boom 3 away from the lifting platform 2 to prevent it from swaying in the wind. The guide support plates 14 can support the installation of the windproof duct structure 4. The windproof duct structure 4 can effectively prevent the lifted object from colliding with the fan cover 1 under the action of wind force when it rises to be parallel with the fan cover 1, making the lifted object safer during the lifting process.

[0041] Guide arc grooves 18 are provided on the inner side of both guide support plates 14. The two ends of the guide support shaft 43 are slidably connected to the inner wall of the guide arc groove 18 at the corresponding positions. The guide arc grooves 18 can guide the guide support shaft 43 to slide when it is pulled, so that the windproof duct body 40 and the corresponding horizontal positioning reinforcing rib 12 slide and rub against each other, pulling the windproof duct body 40 into the lifting arm 3, so that the lifted object is further raised. When the windproof duct body 40 is pulled back into the lifting arm 3, the lifting tension steel cable 5 will fold at the position of the lifting arm 3. At this time, the steel cable winding wheel 6 continues to wind the lifting tension steel cable 5, which effectively improves the lifting speed of the lifted object.

[0042] The windproof duct structure 4 includes a windproof duct body 40. The top of the windproof duct body 40 away from the lifting platform 2 and the bottom of the windproof duct body 40 near the lifting platform 2 are provided with notches, and support guide wheels 41 are fixedly installed at the notches. Two symmetrically arranged rotating guard plates 42 are rotatably connected to the upper part of the outer wall of the windproof duct body 40. A guide support shaft 43 is rotatably connected through the rotating guard plates 42. The windproof duct body 40 can pass through the lifting tension steel cable 5. The lifting tension steel cable 5 inside the windproof duct body 40 will not sway in a large range. When the windproof duct body 40 is retracted, the support guide wheel 41 will not rub against the opening of the windproof duct body 40, effectively protecting the lifting tension steel cable 5. The rotating guard plates 42 ensure that the windproof duct body 40 is always installed at the position of the guide support plate 14.

[0043] A rotating base 23 is fixedly connected to the surface of the adjusting rotating disk 9. The lifting boom 3 is rotatably connected to the rotating base 23. Several evenly distributed boom reinforcing ribs 13 are fixedly connected to the bottom of the lifting boom 3. The outer wall of the boom reinforcing ribs 13 is covered with a graphite coating. The rotating base 23 allows the lifting boom 3 to rotate, so that the lifted object is pulled up to the position above the lifting platform 2, which effectively reduces the labor intensity of lifting work. The boom reinforcing ribs 13 make the lifting boom 3 stronger and more adaptable to the weight of the lifted object. The graphite coating is smoothly lubricated when it rubs against the windproof duct body 40, and the graphite coating is more wear-resistant.

[0044] The working principle of this embodiment is as follows: by separately carrying the lifting platform 2, the reduction motor 7, the lifting boom 3 and the adjusting winch 10 into the assembled fan cover 1, assembling and fixing them with bolts, and clamping the two rows of horizontal positioning reinforcing ribs 12 on the outside of the fan cover 1, rotating and fixing the support arm 8, and clamping the clamping groove 19 on the top side wall of the fan cover 1, the assembly of the entire hoisting system can be completed.

[0045] The hook at the bottom of the lifting tension cable 5 is placed on the ground, and the object to be lifted is secured by the hook. The reduction motor 7 is started, and the lifting tension cable 5 is wound up by the rotation of the cable winding wheel 6. When the object to be lifted is close to the windproof duct structure 4, the adjusting winch 10 is started to wind up the tension lifting cable 15. The tension lifting cable 15 pulls the guide support shaft 43, causing the guide support shaft 43 to slide in the guide arc groove 18. The windproof duct body 40 slides at the position of the arm reinforcing rib 13, causing the windproof duct body 40 to flip and fold. Part of the lifting tension cable 5 is folded into the lifting arm 3. At this time, the lifting tension cable 5 continues to be wound up to improve the lifting efficiency. The object to be lifted is pulled to the position of the lifting groove 20. At this time, the guide support shaft 43 is pulled to the end of the guide arc groove 18. The lifting arm 3 is then subjected to force and flips to continue lifting the object to the position above the lifting platform 2, whereby the goods can be removed.

[0046] After the goods are removed, the steel cable winding wheel 6 and the adjusting winch 10 rotate in opposite directions, causing the lifting tension steel cable 5 and the tension lifting steel cable 15 to be released. Under the action of gravity, the windproof duct body 40 remains vertical, which can effectively prevent the subsequent lifted objects from swaying at the fan cover 1 position, and the hook slides down and resets under the action of gravity.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A tilting and hoisting system for a wind turbine tower crane, comprising a wind turbine cover (1) fixedly installed on the tower, characterized in that: The surface of the fan cover (1) is provided with a lifting platform (2) for supporting the installation hoisting system. The upper and lower surfaces of the lifting platform (2) are rotatably connected to an adjusting rotating disk (9) via the same shaft. A lifting boom (3) is installed at the position of the adjusting rotating disk (9). The bottom inner side of the lifting boom (3) is fixedly connected to two symmetrically arranged guide support plates (14), and a windproof duct structure (4) is provided on the side of the lifting boom (3) away from the lifting platform (2) to prevent it from swinging in the wind. The windproof duct structure (4) includes a windproof duct body (40). The top of the windproof duct body (40) away from the lifting platform (2) and the bottom of the windproof duct body (40) close to the lifting platform (2) are provided with notches, and support guide wheels (41) are fixedly installed at the notches. Two symmetrically arranged rotating guard plates (42) are rotatably connected to the upper part of the outer wall of the windproof duct body (40). A guide support shaft (43) is rotatably connected through the rotating guard plates (42). The lifting platform (2) has two symmetrically arranged fixed support arms (8) rotatably connected to both sides. Both ends of the two fixed support arms (8) are provided with clamping grooves (19). The thickness of the clamping grooves (19) is greater than the thickness of the side wall of the fan cover (1). The upper surface of the lifting platform (2) is provided with a lifting groove (20) located below the lifting arm (3). The lower surface of the lifting platform (2) is fixedly connected with several evenly distributed horizontal positioning reinforcing ribs (12).

2. The tilting and hoisting system for a wind turbine tower crane according to claim 1, characterized in that, Guide grooves (18) are provided on the inner side of both guide support plates (14), and the two ends of the guide support shaft (43) are slidably connected to the inner wall of the guide groove (18) at the corresponding position.

3. The tilting and hoisting system for a wind turbine tower crane according to claim 1, characterized in that, A cable winding wheel (6) is fixedly connected to the middle of the side of the upper surface of the lifting platform (2) away from the lifting boom (3). A second guide wheel (16) is fixedly connected to the side of the upper surface of the lifting platform (2) away from the cable winding wheel (6). A third guide wheel (17) is fixedly connected to the inner top wall of the lifting boom (3) away from the cable winding wheel (6) and located directly above the windproof duct structure (4). A reduction motor (7) is fixedly connected to the side of the upper surface of the lifting platform (2) close to the cable winding wheel (6). The output end of the reduction motor (7) is fixedly connected to the shaft of the cable winding wheel (6).

4. A tilting and hoisting system for a wind turbine tower crane according to claim 3, characterized in that, The lifting tension cable (5) is fixedly connected to the position of the cable winding wheel (6). The end of the lifting tension cable (5) away from the cable winding wheel (6) passes through the lower position of the second guide wheel (16), then through the upper position of the third guide wheel (17), and then through the windproof duct body (40) and is fixedly connected to a hook.

5. A tilting and hoisting system for a wind turbine tower crane according to claim 1, characterized in that, The adjusting rotating disk (9) is fixedly connected to a rotating base (23), the lifting arm (3) is rotatably connected to the rotating base (23), and a number of evenly distributed arm reinforcing ribs (13) are fixedly connected to the bottom of the lifting arm (3). The outer wall of the arm reinforcing ribs (13) is covered with a graphite coating.

6. A tilting and hoisting system for a wind turbine tower crane according to claim 1, characterized in that, The upper surface of the adjusting rotary disk (9) is provided with a through hole (22) for the steel cable winding wheel (6). A fourth guide wheel (21) is fixedly connected to the upper surface of the adjusting rotary disk (9) at the position of the through hole (22). A first guide wheel (11) is fixedly connected to the lower surface of the adjusting rotary disk (9) at the position of the through hole (22). An adjusting winch (10) is fixedly connected to the middle position of the lower surface of the adjusting rotary disk (9).

7. A tilting and hoisting system for a wind turbine tower crane according to claim 6, characterized in that: The turntable of the adjusting winch (10) is fixedly connected with a tension lifting steel cable (15). The end of the tension lifting steel cable (15) away from the adjusting winch (10) passes under the first guide wheel (11), then passes through the steel cable through hole (22) and passes over the position above the fourth guide wheel (21). The end of the tension lifting steel cable (15) away from the adjusting winch (10) is rotatably connected to the guide support shaft (43) through a rotating ring.

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