A wind power generation device with multi-angle rotation

Abstract

The present invention relates to the technical field of wind power generation, and specifically relates to a wind power generation device with multi-angle rotation, including a tower pole and a nacelle; a power generation assembly is provided inside the nacelle; one end of the power generation assembly extends outside the nacelle and is rotatably connected to blades arranged in an annular distribution; a fairing is fixedly connected to one end of the blade; a wind vane is fixedly connected to the upper end of the outer cylindrical surface of the tower pole; an angle adjustment mechanism is fixedly connected between the upper end of the tower pole and the nacelle, and is used for adjusting the angle of the power generation platform where the nacelle and the blades are located. By setting the angle adjustment mechanism, the present invention can automatically track the wind direction and turn the wind power generation device. Compared with the prior art, it has a high degree of automation, is more suitable for scenarios where wind power generation occupies a large area and operation and maintenance are relatively difficult, can reduce the labor intensity of workers, and improve the power generation efficiency of the wind power generation device.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and specifically to a wind power generation device with multi-angle rotation. Background Technique

[0002] Converting the kinetic energy of the wind into mechanical kinetic energy and then into electrical kinetic energy is wind power generation. The principle of wind power generation is to use the wind to drive the rotation of the windmill blades, and then increase the rotation speed through a speed increaser to prompt the generator to generate electricity. According to windmill technology, a breeze speed of about three meters per second can start generating electricity.

[0003] Nowadays, wind power generation devices are widely used. However, most existing wind power generation platforms are fixedly installed at the upper end of the wind tower, and the orientation of the blades is relatively fixed. As the wind direction changes with the seasons, when the wind direction changes, the power generation blades cannot be conveniently rotated and adjusted to align with the wind direction, which reduces the efficiency of the wind power generation device. There are also some existing technologies that use motors to drive the angle adjustment of the power generation platform. However, due to the large area occupied by wind power generation and the large area that maintenance personnel need to monitor at the same time, it is impossible to accurately adjust each wind power generation device in a timely manner, resulting in a relatively low degree of automation of the steering mechanism of the wind power generation device.

[0004] Therefore, a wind power generation device with multi-angle rotation is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a wind power generation device with multi-angle rotation to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A wind power generation device with multi-angle rotation, including a tower and a nacelle; a power generation assembly is provided inside the nacelle; one end of the power generation assembly extends outside the nacelle and is rotatably connected to blades arranged in a circular distribution; a fairing is fixedly connected to one end of the blades; a wind vane is fixedly connected to the upper end of the outer cylindrical surface of the tower.

[0007] An angle adjustment mechanism is fixedly connected between the upper end of the tower and the nacelle, which is used to adjust the angle of the power generation platform where the nacelle and the blades are located; a cable protection mechanism is provided at the upper end inside the angle adjustment mechanism, which is used to protect the lines during rotation.

[0008] Preferably, the angle adjustment mechanism includes a connecting plate fixedly connected to the upper end of the tower pole; the upper end of the connecting plate is fixedly connected to a housing; a yaw system module is arranged at one end of the inner bottom of the housing; a yaw motor is fixedly connected to the other end of the inner bottom of the housing; a worm is fixedly connected to the output shaft of the yaw motor; a worm gear is meshed and connected to the upper end of the worm; a rotating shaft is fixedly connected to the middle position of one end of the outer surface of the worm gear; a second bevel gear is fixedly connected through the outer circular surface of the rotating shaft away from the worm gear; the other end of the rotating shaft is fixedly connected with a bearing and is rotationally connected to the side wall of the housing through the bearing; a first bevel gear is meshed and connected to one side of the second bevel gear; a connecting pipe is fixedly connected to the upper end of the first bevel gear; a flange is fixedly connected to the upper side of the outer circular surface of the connecting pipe and is fixedly connected to the bottom wall of the engine room through the flange; a lifting mechanism is arranged at the middle position of the outer circular surface of the connecting pipe and realizes rotational connection with the housing through the lifting mechanism; the cable protection mechanism is arranged inside the connecting pipe; a locking mechanism is fixedly connected to the rear side of the inner side wall of the housing for locking the worm gear.

[0009] Preferably, the transmission ratio range of the worm gear and the worm is between 100 and 200, and the worm is single-headed.

[0010] Preferably, through holes are formed at the central positions of the first bevel gear and the connecting plate.

[0011] Preferably, the lifting mechanism includes a turntable fixedly connected to the lower side of the outer circular surface of the connecting pipe and an annular support block fixedly connected to the upper end of the inner surface of the housing; an activity groove is formed inside the annular support block; evenly distributed rolling grooves are formed on the upper and lower sides of the inner surface of the activity groove; evenly distributed rolling balls are rotationally connected to the positions corresponding to the rolling grooves on the upper and lower surfaces of the turntable; the turntable is rotationally connected to the annular support block through the rolling balls and the rolling grooves.

[0012] Preferably, the locking mechanism includes a mounting plate fixedly connected to the rear side of the inner side wall of the housing; a connecting rod is fixedly connected to one end of the mounting plate; a U-shaped frame is fixedly connected to one end of the connecting rod; two electric telescopic rods are symmetrically fixedly connected to both sides of the inner surface of the U-shaped part of the U-shaped frame; one end of each of the two electric telescopic rods is fixedly connected with a friction block.

[0013] Preferably, the friction block is a component made of rubber material, and the friction block is connected to one end of the electric telescopic rod through a thread.

[0014] Preferably, the cable protection mechanism includes a fixing block fixedly connected to the bottom of the inner circular surface of the connecting pipe; a plurality of cables penetrate through the middle position of the upper surface of the fixing block; limiting blocks are fixedly connected to the positions of the outer circular surfaces of the cables close to the upper end of the fixing block; evenly distributed return springs are fixedly connected to the edge positions of the upper surface of the fixing block; an upper movable plate is fixedly connected to the upper ends of the return springs together; the upper ends of the cables penetrate through the upper movable plate; locking blocks are fixedly connected to the positions of the outer circular surfaces of the cables close to the upper movable plate; the outer circular surface of the locking block is fixedly connected to the upper movable plate through a thread.

[0015] Preferably, when the return spring is in its original length state, the part of the cable located between the upper movable plate and the fixed block is in a multi-layer folded and bent state.

[0016] Preferably, partition plates are fixedly connected and evenly distributed between different cables on the upper surface of the fixed block, and the height of the partition plates is the same as that when the return spring is in its original length state.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. By setting the angle adjustment mechanism, the present invention can automatically track the wind direction and turn the wind power generation device. Compared with the prior art, it has a higher degree of automation and is more suitable for scenarios where the wind power generation occupies a large area and the operation and maintenance are relatively difficult. It can reduce the labor intensity of the staff and improve the power generation efficiency of the wind power generation device.

[0019] 2. By setting the cable protection mechanism, the present invention can ensure that the cables inside the wind turbine will not break due to stretching and torsion when the angle adjustment mechanism is working. At the same time, the partition plates fixedly connected and evenly distributed between different cables on the upper surface of the fixed block can separate different cables to prevent the cables in the folded and bent state from knotting with each other and ensure the normal operation of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic view of the overall structure of the present invention;

[0021] Figure 2 is a sectional structural view of the connection state of the nacelle and the angle adjustment mechanism of the present invention;

[0022] Figure 3 is a structural view of the angle adjustment mechanism of the present invention;

[0023] Figure 4 is a partial three-dimensional structural view of the angle adjustment mechanism of the present invention;

[0024] Figure 5 is a structural view of the lifting mechanism of the present invention;

[0025] Figure 6 is of the present invention Figure 3 structural view in the A-A direction;

[0026] Figure 7 is a structural view of the locking mechanism of the present invention;

[0027] Figure 8 is a structural view of the cable protection mechanism of the present invention.

[0028] In the figure: 1, tower pole; 2, fairing; 3, blade; 4, nacelle; 5, wind vane; 7, power generation assembly; 8, angle adjustment mechanism; 81, housing; 82, connecting plate; 83, through hole; 84, yaw system module; 85, worm gear; 86, first bevel gear; 87, second bevel gear; 88, connecting pipe; 89, flange; 810, bearing; 811, rotating shaft; 812, worm; 813, yaw motor; 9, locking mechanism; 91, mounting plate; 92, connecting rod; 93, U-shaped frame; 94, electric telescopic rod; 95, friction block; 10, lifting mechanism; 101, annular support block; 102, rolling groove; 103, movable groove; 104, turntable; 105, ball; 11, cable protection mechanism; 111, fixed block; 112, limiting block; 113, partition plate; 114, return spring; 115, upper movable plate; 116, locking block; 117, cable. Detailed implementation manners

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined. In addition, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Please refer to Figures 1 to 8 , the present invention provides a technical solution for a wind power generation device with multi-angle rotation:

[0033] A wind power generation device with multi-angle rotation, as Figures 1 to 2 shown, includes a tower 1 and a nacelle 4; a power generation assembly 7 is arranged inside the nacelle 4; one end of the power generation assembly 7 extends outside the nacelle 4 and is rotatably connected to blades 3 arranged in an annular distribution; a fairing 2 is fixedly connected to one end of the blades 3; a wind vane 5 is fixedly connected to the upper end of the outer cylindrical surface of the tower 1;

[0034] An angle adjustment mechanism 8 is fixedly connected between the upper end of the tower 1 and the nacelle 4, and is used for adjusting the angle of the power generation platform where the nacelle 4 and the blades 3 are located; a cable protection mechanism 11 is arranged at the upper end inside the angle adjustment mechanism 8, and is used for protecting the circuit during rotation.

[0035] Aiming at the problem that the current power generation blades cannot be conveniently rotated and adjusted to face the wind direction, resulting in low efficiency of the wind power generation device and the prior art being unable to achieve precise adjustment of each wind power generation device in a timely manner, and there is a problem of low automation degree of the steering mechanism of the wind power generation device. The present invention can realize the automatic tracking of the wind direction and steering of the wind power generation device by setting the angle adjustment mechanism 8. Compared with the prior art, it has a higher degree of automation and is more suitable for the scenario where the wind power generation occupies a large area and the operation and maintenance are relatively difficult, which can reduce the labor intensity of the staff and improve the power generation efficiency of the wind power generation device at the same time.

[0036] As an embodiment of the present invention, as Figure 3 and Figure 4As shown, the angle adjustment mechanism 8 includes a connecting plate 82 fixedly connected to the upper end of the tower pole 1; the upper end of the connecting plate 82 is fixedly connected to a housing 81; at one end of the inner bottom of the housing 81, a yaw system module 84 is arranged; at the other end of the inner bottom of the housing 81, a yaw motor 813 is fixedly connected; the output shaft of the yaw motor 813 is fixedly connected to a worm 812; the upper end of the worm 812 is meshed and connected to a worm gear 85; at the middle position of one end of the outer surface of the worm gear 85, a rotating shaft 811 is fixedly connected; at a position on the outer cylindrical surface of the rotating shaft 811 away from the worm gear 85, a second bevel gear 87 is fixedly connected through the rotating shaft; the other end of the rotating shaft 811 is fixedly connected to a bearing 810 and is rotationally connected to the side wall of the housing 81 through the bearing 810; on one side of the second bevel gear 87, a first bevel gear 86 is meshed and connected; the upper end of the first bevel gear 86 is fixedly connected to a connecting pipe 88; on the upper side of the outer cylindrical surface of the connecting pipe 88, a flange 89 is fixedly connected and is fixedly connected to the bottom wall of the engine nacelle 4 through the flange 89; at the middle position of the outer cylindrical surface of the connecting pipe 88, a lifting mechanism 10 is arranged and the connecting pipe 88 is rotationally connected to the housing 81 through the lifting mechanism 10; a cable protection mechanism 11 is arranged inside the connecting pipe 88; a locking mechanism 9 is fixedly connected to the rear side of the inner side wall of the housing 81 for locking the worm gear 85.

[0037] As Figure 3 and Figure 4 shown, the transmission ratio range between the worm gear 85 and the worm 812 is between 100 and 200, and the worm 812 is single-headed.

[0038] As Figure 3 shown, through holes 83 are respectively formed at the central positions of the first bevel gear 86 and the connecting plate 82.

[0039] When the angle adjustment mechanism 8 is working, first, the wind vane 5 receives a corresponding pulse output signal for each wind direction. This pulse output signal is transmitted to the yaw system module 84. The yaw system module 84 determines the yaw direction and yaw angle to be adjusted through data analysis. Then, the yaw system module 84 transmits the yaw signal to the yaw motor 813. After receiving the signal, the yaw motor 813 starts to work and drives the worm 812 to rotate. Further, it drives the worm gear 85 meshed with the worm 812 to rotate. The transmission ratio range between the worm gear 85 and the worm 812 is between 100 and 200. The large transmission ratio enables the mechanism composed of the worm gear 85 and the worm 812 to have a decelerating effect, converting the high speed of the yaw motor 813 into the low-speed rotation of the worm gear 85, thereby achieving precise angle adjustment. The worm gear 85 is fixedly connected to the rotating shaft 811, and the rotating shaft 811 is also fixedly connected to the second bevel gear 87. Driven by the worm gear 85, the second bevel gear 87 starts to rotate. At the same time, one end of the rotating shaft 811 is rotatably connected to the side wall of the housing 81 through a bearing 810. The rotation of the second bevel gear 87 causes the first bevel gear 86 meshed with it to start rotating. The upper end of the first bevel gear 86 is fixedly connected to the connecting pipe 88, and the upper end of the connecting pipe 88 is fixedly connected to the wind power platform. Finally, it realizes driving the rotation of the wind power platform to achieve angle adjustment.

[0040] As an embodiment of the present invention, as Figure 5 shown, the lifting mechanism 10 includes a turntable 104 fixedly connected to the lower side of the outer cylindrical surface of the connecting pipe 88 and an annular support block 101 fixedly connected to the upper end of the inner surface of the housing 81; an activity groove 103 is formed inside the annular support block 101; uniformly distributed rolling grooves 102 are formed on the upper and lower sides of the inner surface of the activity groove 103; uniformly distributed rolling balls 105 are rotatably connected to the positions corresponding to the rolling grooves 102 at the edges of the upper and lower surfaces of the turntable 104; the turntable 104 is rotatably connected to the annular support block 101 through the rolling balls 105 and the rolling grooves 102.

[0041] During operation, since the upper end of the angle adjustment mechanism 8 is directly fixedly connected to the nacelle 4 of the wind power platform, and the connecting pipe 88 itself cannot be fixedly supported due to the need to rotate, the angle adjustment mechanism 8 lacks support and loses stability. By setting the lifting mechanism 10, the annular support block 101 can be used to cooperate with the turntable 104 to support the wind power platform. At the same time, since the annular support block 101 and the turntable 104 are connected through the rolling balls 105 and the rolling grooves 102, it can also smoothly ensure the rotation of the connecting pipe 88 driving the wind power platform.

[0042] As an embodiment of the invention, as Figure 7As shown, the locking mechanism 9 includes a mounting plate 91 fixedly connected to the rear side of the inner wall of the housing 81; one end of the mounting plate 91 is fixedly connected to a connecting rod 92; one end of the connecting rod 92 is fixedly connected to a U-shaped frame 93; two electric telescopic rods 94 are symmetrically and fixedly connected to both sides of the inner surface of the U-shaped part of the U-shaped frame 93; one end of each of the two electric telescopic rods 94 is fixedly connected to a friction block 95.

[0043] As Figure 7 shown, the friction block 95 is a component made of rubber, and the friction block 95 is connected to one end of the electric telescopic rod 94 by a thread.

[0044] After the angle adjustment mechanism 8 adjusts the angle of the wind power platform, the yaw motor 813 stops working. Since the wind power platform lacks a positioning mechanism at this time, under the action of wind force, the wind power platform will rotate freely, resulting in a poor adjustment effect of the angle adjustment mechanism 8. By setting the locking mechanism 9 in the present invention, after the angle adjustment mechanism 8 completes the angle adjustment and starts to work, the electric telescopic rods 94 on both sides of the U-shaped frame 93 are activated and start to extend, driving the friction blocks 95 to fix the worm wheel 85, thereby preventing the wind power platform from rotating freely under the action of wind force and improving the adjustment effect of the angle adjustment mechanism 8. The friction block 95 is connected to one end of the electric telescopic rod 94 by a thread, which can ensure that after the friction block 95 is worn, it can be easily replaced to ensure the normal operation of the locking mechanism 9, and further ensure the adjustment effect of the angle adjustment mechanism 8.

[0045] As an embodiment of the present invention, as Figure 8 shown, the cable protection mechanism 11 includes a fixed block 111 fixedly connected to the bottom of the inner circular surface of the connecting pipe 88; several cables 117 penetrate through the middle position of the upper surface of the fixed block 111; limit blocks 112 are fixedly connected to the outer circular surface of the cables 117 near the upper end of the fixed block 111; uniformly distributed return springs 114 are fixedly connected to the edge position of the upper surface of the fixed block 111; the upper ends of the return springs 114 are commonly fixedly connected to an upper movable plate 115; the upper ends of the cables 117 penetrate through the upper movable plate 115; locking blocks 116 are fixedly connected to the outer circular surface of the cables 117 near the upper movable plate 115; the outer circular surface of the locking block 116 is fixedly connected to the upper movable plate 115 by a thread.

[0046] As Figure 8 shown, when the return spring 114 is in its original length state, the part of the cable 117 between the upper movable plate 115 and the fixed block 111 is in a multi-layer folded and bent state.

[0047] As Figure 8As shown, partition plates 113 are fixedly connected and evenly distributed between different cables 117 on the upper surface of the fixed block 111, and the height of the partition plates 113 is the same as that of the return spring 114 in its original length state.

[0048] Since there are many cables inside the wind power generation device, when the angle adjustment mechanism 8 is used to adjust the angle of the wind power platform, the cables will be twisted and stretched, which easily leads to cable breakage and affects the normal operation of the wind power generation device. In the present invention, by setting the cable protection mechanism 11, when the angle adjustment mechanism 8 works, since the upper end of the cable 117 is fixedly connected to the upper movable plate 115 through the locking block 116, when the wind power platform rotates and stretches the cable 117, the cable 117 will drive the upper movable plate 115 to move upward, thereby driving the return spring 114 to stretch. The part of the cable 117 between the upper movable plate 115 and the fixed block 111 is in a multi-layer folded and bent state, that is, the cable 117 has a reserved stretching length, which can meet the stretching of the cable 117 required for the rotation of the wind power platform. After the rotation of the wind power platform stops, the return spring 114 will return to a certain deformation according to the rotation state, facilitating the cable 117 to form a multi-layer folded and bent state. When the angle adjustment mechanism 8 reaches the maximum rotation angle, the elongation length of the cable 117 is within the deformation range of the return spring 114, ensuring that the return spring 114 will not be damaged. At the same time, the partition plates 113 fixedly connected and evenly distributed between different cables 117 on the upper surface of the fixed block 111 can separate different cables 117 from each other, preventing the cables 117 in the folded and bent state from knotting with each other and ensuring the normal operation of the mechanism.

[0049] Usage method: First, the wind vane 5 receives a corresponding pulse output signal for each wind direction, and this pulse output signal will be transmitted to the yaw system module 84. The yaw system module 84 analyzes the data to determine the yaw direction and yaw angle to be adjusted. Then, the yaw system module 84 transmits the yaw signal to the yaw motor 813. After receiving the signal, the yaw motor 813 starts to work and drives the worm 812 to rotate, thereby driving the worm gear 85 meshingly connected with the worm 812 to rotate. The transmission ratio range between the worm gear 85 and the worm 812 is between 100 and 200. The large transmission ratio enables the mechanism composed of the worm gear 85 and the worm 812 to have a decelerating effect, converting the high speed of the yaw motor 813 into the low speed rotation of the worm gear 85, thereby achieving precise angle adjustment. The worm gear 85 is fixedly connected to the rotating shaft 811, and the rotating shaft 811 is also fixedly connected to the second bevel gear 87. Driven by the worm gear 85, the second bevel gear 87 starts to rotate. At the same time, one end of the rotating shaft 811 is rotatably connected to the side wall of the housing 81 through a bearing 810. The rotation of the second bevel gear 87 causes the first bevel gear 86 meshingly connected therewith to start to rotate. The upper end of the first bevel gear 86 is fixedly connected to the connecting pipe 88, and the upper end of the connecting pipe 88 is fixedly connected to the wind power platform, finally realizing the rotation of the wind power platform and achieving angle adjustment.

[0050] All the electrical components appearing in this article are electrically connected to the external main controller and the 220V mains through a transformer, and the main controller can be a conventional known device such as a computer for control. The product model provided by the present invention is only used according to the structural characteristics of the product for this technical solution. The product will be adjusted and modified after purchase to make it more matching and conforming to the technical solution to which the present invention belongs. It is an optimal application technical solution for this technical solution. The product model can be replaced and modified according to the required technical parameters, which is well-known to those skilled in the art. Therefore, those skilled in the art can clearly obtain the corresponding usage effects through the technical solution provided by the present invention.

[0051] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind power generation device with multi-angle rotation, comprising a tower pole (1) and a nacelle (4); a power generation assembly (7) is arranged inside the nacelle (4); one end of the power generation assembly (7) extends outside the nacelle (4) and is rotatably connected to blades (3) arranged in an annular distribution; a fairing (2) is fixedly connected to one end of the blades (3); a wind vane (5) is fixedly connected to the upper end of the outer cylindrical surface of the tower pole (1). Characterized in that an angle adjustment mechanism (8) is fixedly connected between the upper end of the tower pole (1) and the nacelle (4) for adjusting the angle of the power generation platform where the nacelle (4) and the blades (3) are located; a cable protection mechanism (11) is arranged at the upper end inside the angle adjustment mechanism (8) for protecting the circuit during rotation. The angle adjustment mechanism (8) includes a connecting plate (82) fixedly connected to the upper end of the tower pole (1); a housing (81) is fixedly connected to the upper end of the connecting plate (82); a yaw system module (84) is arranged at one end of the inner bottom of the housing (81); a yaw motor (813) is fixedly connected to the other end of the inner bottom of the housing (81); a worm (812) is fixedly connected to the output shaft of the yaw motor (813); a worm gear (85) is meshed and connected to the upper end of the worm (812); a rotating shaft (811) is fixedly connected to the middle position of one end of the outer surface of the worm gear (85); a second bevel gear (87) is fixedly connected through the outer cylindrical surface of the rotating shaft (811) away from the worm gear (85); the other end of the rotating shaft (811) is fixedly connected with a bearing (810) and is rotatably connected to the side wall of the housing (81) through the bearing (810); a first bevel gear (86) is meshed and connected to one side of the second bevel gear (87); a connecting pipe (88) is fixedly connected to the upper end of the first bevel gear (86); a flange (89) is fixedly connected to the upper side of the outer cylindrical surface of the connecting pipe (88) and is fixedly connected to the bottom wall of the nacelle (4) through the flange (89); a lifting mechanism (10) is arranged at the middle position of the outer cylindrical surface of the connecting pipe (88) and realizes the rotating connection with the housing (81) through the lifting mechanism (10); the cable protection mechanism (11) is arranged inside the connecting pipe (88); a locking mechanism (9) is fixedly connected to the rear side of the inner side wall of the housing (81) for locking the worm gear (85). The cable protection mechanism (11) includes a fixed block (111) fixedly connected to the bottom of the inner cylindrical surface of the connecting pipe (88); a plurality of cables (117) are arranged through the middle position of the upper surface of the fixed block (111); a limiting block (112) is fixedly connected to the upper end position of the outer cylindrical surface of the cable (117) close to the fixed block (111); a plurality of uniformly distributed return springs (114) are fixedly connected to the edge position of the upper surface of the fixed block (111); an upper movable plate (115) is fixedly connected to the upper ends of the return springs (114) together; the upper ends of the cables (117) penetrate through the upper movable plate (115); a locking block (116) is fixedly connected to the position of the outer cylindrical surface of the cable (117) close to the upper movable plate (115); the outer cylindrical surface of the locking block (116) is fixedly connected to the upper movable plate (115) through a thread. On the upper surface of the fixed block (111), partition plates (113) fixedly connected and evenly distributed are arranged between different cables (117), and the height of the partition plates (113) is the same as that of the return spring (114) in the original length state.

2. The wind power generation device capable of multi-angle rotation according to claim 1, wherein: The transmission ratio range of the worm gear (85) and the worm (812) is between 100 and 200, and the worm (812) is single-headed.

3. The wind power generation device with multi-angle rotation according to claim 1, characterized in that: Through holes (83) are opened at the central positions of the first bevel gear (86) and the connecting plate (82).

4. A wind power generation device with multi-angle rotation according to claim 1, characterized in that: The lifting mechanism (10) includes a turntable (104) fixedly connected to the lower side of the outer cylindrical surface of the connecting pipe (88) and an annular support block (101) fixedly connected to the upper end of the inner surface of the housing (81); an activity groove (103) is opened inside the annular support block (101); evenly distributed rolling grooves (102) are opened on the upper and lower sides of the inner surface of the activity groove (103); evenly distributed rolling balls (105) are rotatably connected to the positions corresponding to the rolling grooves (102) at the upper and lower surface edges of the turntable (104); the turntable (104) is rotatably connected to the annular support block (101) through the rolling balls (105) and the rolling grooves (102).

5. A wind power generation device with multi-angle rotation according to claim 1, characterized in that: The locking mechanism (9) includes a mounting plate (91) fixedly connected to the rear side of the inner side wall of the housing (81); one end of the mounting plate (91) is fixedly connected to a connecting rod (92); one end of the connecting rod (92) is fixedly connected to a U-shaped frame (93); two electric telescopic rods (94) are symmetrically and fixedly connected to both sides of the inner surface of the U-shaped portion of the U-shaped frame (93); one end of each of the two electric telescopic rods (94) is fixedly connected to a friction block (95).

6. The wind power generation device with multi-angle rotation according to claim 5, characterized in that: The friction block (95) is a component made of rubber, and the friction block (95) is connected to one end of the electric telescopic rod (94) by threads.

7. A wind power generation device with multi-angle rotation according to claim 1, characterized in that: When the return spring (114) is in the original length state, the part of the cable (117) located between the upper movable plate (115) and the fixed block (111) is in a multi-layer folded and bent state.

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