Wind turbine with adjustable rotor blade angle

Abstract

Wind turbine with adjustable rotor blade angle, characterized in that it comprises: a mounting assembly, the mounting assembly comprising a base (11), a sleeve (12) and a rotating drum (13), the sleeve (12) being mounted on the base (11) and the rotating drum (13) being rotatably mounted on the upper end of the sleeve (12); a plurality of rotor blade assemblies (2), the plurality of rotor blade assemblies (2) being arranged at intervals along the circumference of the rotating drum (13), one end of each rotor blade assembly (2) projecting into the rotating drum (13); an angle adjustment assembly, wherein the angle adjustment assembly comprises a wind speed detecting device (31), a drive mechanism and an angle adjustment mechanism (33), wherein the wind speed detection device (31) is arranged on the outer wall of the rotating drum (13), and wherein the drive mechanism is arranged in the mounting assembly and the wind speed detection device (31) is in signal communication with the drive mechanism, and wherein the angle adjustment mechanism (33) is arranged in the mounting assembly, the power input end of which is connected to the drive mechanism, while the power output end of which is connected to an end of the rotor blade assembly (2) that projects into the rotating drum (13).

Description

Technical area

[0001] The present utility model relates to the technical field of wind power generation and in particular to a wind turbine with adjustable rotor blade angle. Background technology

[0002] Wind energy is a renewable and clean energy source. Wind power generation is a technology that uses wind energy to generate electricity. Due to its advantages—cleanliness, environmental protection, high renewability, and low operating costs—wind power is widely used worldwide and plays an important role in the global energy transition and tackling climate change.

[0003] Wind turbines can be installed on land or at sea. They are systems that convert wind energy from the natural environment into electrical energy. The operating principle of a wind turbine is that the wind drives the wind turbine, thus converting wind energy into mechanical energy. The mechanical energy is then converted into electrical energy by a generator. The rotor blades of existing wind turbines are usually fixed and not adjustable. However, wind direction and speed in the natural environment are variable. Fixed rotor blades cannot fully utilize wind energy resources, and wind turbines cannot always operate in an efficient and stable state. Furthermore, excessively fast rotation of the wind turbine in high wind speeds can lead to rotor blade damage and even failure and shutdown of the turbine. Contents of the utility model

[0004] Against this background, the present utility model provides a wind turbine with adjustable rotor blade angle to solve the problems that the rotor blades of existing wind turbines are not adjustable, the wind turbines cannot fully utilize wind energy, cannot operate continuously in an efficient and stable state, and that high wind speed may lead to rotor blade damage and even failure and shutdown of the turbine.

[0005] In a first aspect, the present utility model relates to a wind turbine with adjustable rotor blade angle, comprising: a mounting assembly, the mounting assembly comprising a base, a sleeve and comprising a rotating drum, the sleeve being mounted on the base and the rotating drum being rotatably mounted on the upper end of the sleeve; a plurality of rotor blade assemblies, the plurality of rotor blade assemblies being arranged at intervals along the circumference of the rotating drum, one end of each rotor blade assembly extending into the rotating drum; an angle adjustment assembly, the angle adjustment assembly comprising a wind speed sensing device, a drive mechanism, and an angle adjustment mechanism, the wind speed sensing device being arranged on the outer wall of the rotating drum, the drive mechanism being arranged in the mounting assembly, the wind speed sensing device being in signal communication with the drive mechanism, and the angle adjustment mechanism being arranged in the mounting assembly, the power input end of which is connected to the drive mechanism, while the power output end of which is connected to an end of the rotor blade assembly that projects into the rotating drum. Beneficial effects

[0006] The wind speed measuring device can monitor the wind direction and speed of the natural wind in real time and control the drive according to the monitored signal. By controlling the drive mechanism, the angle adjustment mechanism is activated, and then the angle of the rotor blade is adjusted via the angle adjustment mechanism. This means that when the wind direction and speed change, the angle of the rotor blade can be adjusted as needed. When the wind direction changes, the angle of the rotor blade is adjusted to fully utilize the wind energy during operation, reduce the influence of the wind, and ensure the wind turbine operates continuously in an efficient and stable state. When the wind speed is too high, it can also prevent the rotor blade from rotating too quickly and becoming damaged.

[0007] In an optional embodiment, the angle adjustment mechanism comprises a transmission rod, a first bevel gear and a second bevel gear, wherein one end of the transmission rod is located at the base and is connected to the drive mechanism, while the other end projects from the sleeve into the rotating drum, the first bevel gear is arranged on the transmission rod, and wherein the second bevel gear is arranged at an end of each group of rotor blade assemblies that projects into the rotating drum and the second bevel gear meshes with the first bevel gear.

[0008] In an optional embodiment, the drive mechanism comprises a lifting drive component and a rotation drive component, wherein the lifting drive component is configured to drive the transmission rod to be raised and lowered in the height direction of the sleeve, and the rotation drive component is configured to drive the transmission rod to rotate about the axial direction of the sleeve. Beneficial effects

[0009] The lifting drive component is capable of driving the transmission rod so that the first bevel gear meshes with or separates from the second bevel gear. When the angle of the rotor blades needs to be adjusted, the first bevel gear meshes with the second bevel gear, and the transmission rod and the first bevel gear are synchronously driven by the lifting drive component, which can drive the second bevel gear to rotate the rotor blades and achieve the purpose of adjusting the angle. However, during normal operation of the rotor blades, the first and second bevel gears are in a separated state, which does not affect the normal operation of the wind turbine.

[0010] In an optional embodiment, the lifting drive comprises a lifting rod, wherein the lifting rod is arranged in the base, and wherein the part of the transmission rod located in the base is provided with a mounting plate, and wherein the drive end of the lifting rod is connected to the mounting plate.

[0011] In an optional embodiment, a sliding block is arranged between the drive end of the lifting rod and the mounting plate. Beneficial effects

[0012] The lifting rod can be extended and retracted along its axial direction to drive the transmission rod for lifting and lowering, and the sliding block arranged between the lifting rod and the mounting plate can reduce friction, thus not affecting the rotation of the transmission rod.

[0013] In an optional embodiment, the rotation drive component comprises a drive motor, a first transmission gear, and a second transmission gear, wherein the drive motor is arranged in the base and its output shaft is connected to the first transmission gear, and wherein an end of the transmission rod located in the base is connected to the second transmission gear, and wherein a transmission belt is wound around the first transmission gear and the second transmission gear. Beneficial effects

[0014] The drive motor transmits power to the transmission rod via a belt drive to rotate the transmission rod. This rotation drive component efficiently utilizes the space in the base, has a simple and compact structure, and requires less installation space. In an optional embodiment, it further comprises a wind turbine start-up drive device, wherein the wind turbine start-up drive device is configured to drive the rotor blade assemblies for rotation.

[0015] In an optional embodiment, the starting drive device of the wind turbine comprises a starter motor, a rotation shaft and an inner shell housing, wherein the starter motor is arranged in the transmission rod, one end of the rotation shaft is connected to the drive end of the starter motor, while the other end of the rotation shaft is connected to the inner shell housing, and the inner shell housing is located inside the rotating drum and is fixedly connected to the rotating drum.

[0016] In an optional embodiment, a block is arranged on top of the inner shell housing, the block being connected to the rotating drum. Beneficial effects

[0017] The starter motor rotates the rotating shaft, causing the inner casing, rotating drum, and rotor blade assembly to rotate, allowing subsequent rotor blade assemblies to harness wind energy to generate electricity. After the wind turbine's starting drive system is installed, the rotor blade assembly is easier to start, contributing to the harvesting of more wind energy resources. In an optional embodiment, each rotor blade assembly includes a rotor blade and a connecting rod, with one end of the connecting rod connected to the rotor blade and the other end extending into the rotating drum. Figures

[0018] To more clearly illustrate the specific embodiments of the present utility model and the technical solutions in the prior art, the figures necessary for describing the specific embodiments and the prior art are briefly presented below. Obviously, the figures described below represent some embodiments of the present utility model, and for general technical personnel in this field, additional figures can be created based on these figures without any creative effort. Fig. 1 shows a front view of a wind turbine with adjustable rotor blade angle according to an embodiment of the present utility model; Fig. 2 shows a cross-sectional view of a wind turbine with adjustable rotor blade angle according to an embodiment of the present utility model; Fig. 3 shows a schematic representation of the connection between the rotation drive component and the angle adjustment mechanism in a wind turbine with adjustable rotor blade angle according to an embodiment of the present utility model; Fig. 4 shows a schematic representation of a starting drive device of the wind turbine in a wind turbine with adjustable rotor blade angle according to an embodiment of the present utility model. Reference symbols in the figures:

[0019] 11. Base, 12. Sleeve, 13. Rotating drum; 2. Rotor blade assembly, 21. Rotor blade, 22. Connecting rod; 31. Wind speed sensor, 3211. Lifting rod, 3212. Sliding block, 3221. Drive motor, 3222. First transmission gear, 3223. Second transmission gear, 3224. Transmission belt, 33. Angle adjustment mechanism, 331. Transmission rod, 3311. Mounting plate, 332. First bevel gear, 333. Second bevel gear; 41. Starter motor, 42. Rotating shaft, 43. Inner jacket housing, 431. Jacket body, 432. Top cover, 44. Block. Specific embodiments

[0020] In the following, the technical solutions in the embodiments of the present utility model are described clearly and completely with reference to the figures. Obviously, the described embodiments are only some of the embodiments of the present utility model and not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments that general technical personnel can obtain without creative effort fall within the scope of the present utility model.

[0021] When describing the present utility model, it should be understood that azimuth or positional relationships referring to the terms "center," "top," "bottom," "left," "right," "vertical," "horizontal," "inside," "outside," etc., have the azimuth or positional relationships based on the figures. They are intended to facilitate and simplify the description of the present utility model, rather than indicating or implying that the said device or component must have a specific orientation, be constructed, and operate in a specific orientation. Therefore, they should not be understood as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used only for differentiated description and should not be understood to indicate a relative meaning.

[0022] In the description of the present utility model, it should be noted that the terms "assembly," "connection," and "connection" are to be understood in a broad sense unless expressly stated or limited otherwise. For example, it may be a fixed connection, a detachable connection, or a one-piece connection; it may be a mechanical connection or an electrical connection; it may be a direct connection, an indirect connection via an intermediate medium, or a connection within the two elements. For general technical personnel in the field, the specific meaning of the above terms in the present utility model can be understood depending on the specific circumstances.

[0023] Furthermore, the various features described below can be combined with each other in the embodiments of the present utility model as long as they do not conflict with each other.

[0024] In the following, an embodiment of the present utility model is described in conjunction with the Fig. 1 to 4 described.

[0025] According to one embodiment of the present utility model, a wind turbine with adjustable rotor blade angle is provided, the wind turbine comprising a mounting assembly, a plurality of rotor blade assemblies 2, and an angle adjustment assembly. The mounting assembly comprises a base 11, a sleeve 12, and a rotating drum 13, wherein the sleeve 12 is mounted on the base 11 and the rotating drum 13 is rotatably mounted at the upper end of the sleeve 12; the plurality of rotor blade assemblies 2 are arranged at intervals along the circumference of the rotating drum 13, and one end of each rotor blade assembly 2 protrudes into the rotating drum 13.The angle adjustment assembly includes a wind speed detecting device 31, a drive mechanism, and an angle adjustment mechanism 33, wherein the wind speed detecting device 31 is arranged on the outer wall of the rotating drum 13, and wherein the drive mechanism is arranged in the mounting assembly, and the wind speed detecting device 31 is in signal communication with the drive mechanism, and wherein the angle adjustment mechanism 33 is arranged in the mounting assembly, the power input end of which is connected to the drive mechanism, while the power output end of which is connected to an end of the rotor blade assembly 2 that projects into the rotating drum 13.

[0026] The base 11 has the shape of a rectangular parallelepiped and can be placed on the ground. The base 11 has a hollow interior. The sleeve 12 is hollow and firmly attached to the base 11 at its lower end, and the inside of the sleeve 12 is connected to the inside of the base 11. The rotating drum 13 is similar in structure to the sleeve 12, is also hollow, and is connected to the inside of the sleeve 12. The diameter of the rotating drum 13 is larger than that of the sleeve 12, but its height is significantly smaller. Several rotor blade assemblies 2 are arranged around the rotating drum 13. In this exemplary embodiment, a total of four rotor blade assemblies 2 are arranged, and the angle between two adjacent rotor blade assemblies 2 is 90°.When the wind hits the surface of the rotor blade assemblies 2, the rotor blade assemblies 2 and the rotating drum 13 can be driven to rotate together, thereby harnessing the wind energy and converting it into electrical energy.

[0027] Furthermore, in this embodiment, the wind speed detection device 31 is centrally located on top of the rotating drum 13. It detects parameters such as wind direction and speed in the natural environment and converts them into electrical signals that are transmitted to the drive mechanism. Upon receiving the signals, the drive mechanism controls the angle adjustment mechanism 33, causing the rotor blade assembly 2 to rotate and change its angle.

[0028] The wind speed detection device 31 can monitor the wind direction and speed of the natural wind and control the drive mechanism based on the monitored data. It then controls the angle adjustment mechanism 33 and finally adjusts the angle of the rotor blade assembly 2 via the angle adjustment mechanism 33. That is, when the wind direction changes, the angle of the rotor blade assembly 2 can be adjusted according to the wind direction, so that the wind turbine fully utilizes wind energy and reduces the influence of the wind, and the wind turbine operates continuously in an efficient and stable state. When the wind speed is too high, the angle of the rotor blade assembly 2 can be adjusted to increase the wind resistance and reduce the rotation speed of the rotor blade assembly 2, thereby preventing the rotor blade assembly 2 from rotating too quickly and being damaged.

[0029] In one embodiment, the angle adjustment mechanism 33 comprises a transmission rod 331, a first bevel gear 332 and a second bevel gear 333, wherein one end of the transmission rod 331 is located on the base 11 and is connected to the drive mechanism, while the other end projects from the sleeve 12 into the rotating drum 13, the first bevel gear 332 is arranged on the transmission rod 331, and wherein the second bevel gear 333 is arranged at one end of each group of rotor blade assemblies 2 that projects into the rotating drum 13 and the second bevel gear 333 meshes with the first bevel gear 332.

[0030] The transmission rod 331 is hollow inside, and the rod body extends from the base 11 to the rotating drum 13. One end of the transmission rod 331 is located inside the base 11 to enable connection with the drive mechanism. Furthermore, the transmission rod 331 is provided with a mounting plate on the rod body inside the base 11. The mounting plate is fixedly connected to the transmission rod 331 and can rotate with the transmission rod 331. The diameter of the mounting plate is larger than the diameter of the rod body of the transmission rod 331. The other end of the transmission rod 331 is located inside the rotating drum 13, and its end portion is provided with a first bevel gear 332. The first bevel gear 332 is located on the underside of the second bevel gear 333 and meshes with the second bevel gear 333 which is attached to an end of each rotor blade assembly 2 projecting into the rotating drum 13.In this embodiment, four rotor blade assemblies 2 are provided, ie the first bevel gear 332 meshes simultaneously with four second bevel gears 333. In this way, upon rotation of the first bevel gear 332, the second bevel gears 333 can be driven, and the rotor blade assembly 2 is also driven synchronously, so that the angle of the rotor blade assembly 2 can be adjusted.

[0031] In one embodiment, the drive mechanism comprises a lifting drive component and a rotation drive component, wherein the lifting drive component is configured to drive the transmission rod 331 to be raised and lowered in the height direction of the sleeve 12, and the rotation drive component is configured to drive the transmission rod 331 to rotate about the axial direction of the sleeve 12.

[0032] The lifting drive component is configured to change the engagement state of the first bevel gear 332 and the second bevel gear 333. That is, when the angle of the rotor blade assembly 2 needs to be adjusted, the lifting drive component drives the transmission rod 331 so that the first bevel gear 332 meshes with the second bevel gear 333. Subsequently, the transmission rod 331 and the first bevel gear 332 are driven to rotate by the rotation drive component, causing the second bevel gear 333 and the rotor blade assembly 2 to rotate synchronously to achieve angle adjustment. When the angle of the rotor blade assembly 2 does not need to be adjusted, the rotor blade assembly 2 and the rotating drum 13 must rotate to utilize wind energy to generate electricity.To prevent the first bevel gear 332 from interfering with the second bevel gear 333, the transmission rod 331 must be raised and lowered via the lifting drive component so that the first bevel gear 332 is separated from the second bevel gear 333.

[0033] In one embodiment, the lifting drive component comprises a lifting rod 3211, wherein the lifting rod 3211 is arranged in the base 11, and wherein the part of the transmission rod 331 located in the base 11 is provided with a mounting plate, and wherein the drive end of the lifting rod 3211 is connected to the mounting plate.

[0034] The lifting direction of the lifting rod 3211 runs along the height of the sleeve 12. The fixing end of the lifting rod 3211 is arranged at the bottom of the base 11, and the drive end of the lifting rod 3211 is connected to the bottom of the mounting plate of the transmission rod 331, so that when the lifting rod 3211 extends and retracts, the transmission rod 331 can be raised and lowered as a whole. One lifting rod or multiple lifting rods 3211 can be arranged around the transmission rod 331. By arranging multiple lifting rods 3211, the force on the mounting plate is more uniform and the lifting action of the transmission rod 331 is more stable. The lifting rod 3211 can be equipped with various linear actuators, such as electric telescopic rods and pneumatic telescopic rods.

[0035] In one embodiment, a sliding block 3212 is arranged between the drive end of the lifting rod 3211 and the mounting plate.

[0036] As the transmission rod 331 rotates due to the rotation drive component, the mounting plate also rotates synchronously, causing the mounting plate to rub against the lifting rod 3211, leading to wear on both parts and, at high friction, also affecting the rotation of the lifting rod. By providing the sliding block 3212, the friction between the mounting plate and the lifting rod can be significantly reduced without affecting the rotation of the lifting rod.

[0037] In one embodiment, the rotation drive component comprises a drive motor 3221, a first transmission gear 3222 and a second transmission gear 3223, wherein the drive motor 3221 is arranged in the base 11 and its output shaft is connected to the first transmission gear 3222, and wherein an end of the transmission rod 331 located in the base 11 is connected to the second transmission gear 3223, and wherein a transmission belt 3224 is wound around the first transmission gear 3222 and the second transmission gear 3223.

[0038] The drive motor 3221 is arranged on top of the base 11 and can rotate the first transmission wheel 3222 and then rotate the second transmission wheel 3223 and the transmission rod 331 via the transmission belt 3224. The second transmission wheel 3223 should be longer than the first transmission wheel 3222 because it rises and falls with the transmission rod 331, ensuring that the second transmission wheel 3223 remains connected to the transmission belt 3224 during raising and lowering.

[0039] In one embodiment, the wind turbine further comprises a starting drive device of the wind turbine, wherein the starting drive device of the wind turbine is designed to drive the rotor blade assemblies 2 for rotation.

[0040] When the wind turbine is ready for operation, the starting drive device of the wind turbine can first rotate the rotor blade assemblies 2 and then use the wind to rotate the rotor blade assemblies 2, thereby reducing the resistance and difficulty of directly rotating the rotor blade assemblies 2 by the wind.

[0041] In one embodiment, the starting drive device of the wind turbine comprises a starter motor 41, a rotating shaft 42 and an inner shell housing 43, wherein the starter motor 41 is arranged in the transmission rod 331, one end of the rotating shaft 42 is connected to the drive end of the starter motor 41, while the other end of the rotating shaft 42 is connected to the inner shell housing 43, and the inner shell housing 43 is located inside the rotating drum 13 and is fixedly connected to the rotating drum 13.

[0042] The inner shell housing 43 is located inside the rotating drum 13 and covers the first bevel gear 332 and the second bevel gear 333 on the outside. The inner shell housing 43 is arranged coaxially with the rotating drum 13 and is fixedly connected to the rotating drum 13. The inside of the transmission rod 331 is hollow, which can be used to adjust the starter motor 41 and the rotating shaft 42. The starter motor 41 is located at the bottom of the sleeve 12 and is connected to one end of the rotating shaft 42, while the other end of the rotating shaft 42 extends upward until it is connected to the inner shell housing 43. When the starter motor 41 is running, it can rotate the rotating shaft 42 and, via the rotating shaft 42, rotate the inner shell housing 43, the rotating drum 13, and the rotor blade assembly 2.

[0043] In one embodiment, a block 44 is arranged on top of the inner shell housing 43, the block 44 being connected to the rotating drum 13.

[0044] The inner shell housing 43 includes a housing body 431 and an upper cover 432. The housing body 431 is cylindrical and disposed outside the first bevel gear 332 and the second bevel gear 333, and the upper cover 432 is disposed above the housing body 431. A plurality of blocks 44 are arranged on the upper cover 432, and the blocks 44 have a square shape. The blocks 44 are welded and fixed to the rotary drum 13.

[0045] In one embodiment, each rotor blade assembly 2 comprises a rotor blade 21 and a connecting rod 22, wherein one end of the connecting rod 22 is connected to the rotor blade 21, while the other end of the connecting rod 22 projects into the rotating drum 13.

[0046] The rotor blade 21 is located outside the rotating drum 13 and has a flat shape as a whole. The connecting rod 22 is a round rod, one end of which is connected to the rotor blade 21, while the other end extends through the rotating drum 13 and the inner casing 43, protrudes from the inside thereof, and is provided with a second bevel gear 333. The rotor blade 21 and the connecting rod 22 can rotate synchronously with the second bevel gear 333.

[0047] In other embodiments, the rotor blade 21 may have other shapes, for example that of a willow leaf.

[0048] The operation of the wind turbine of this embodiment is described as follows: First, the starter motor 41 is started, the starter motor 41 rotates the rotating shaft 42, and the rotation of the rotating shaft 42 drives the inner shroud 43 and the connected rotating drum 13. The connecting rod 22 of the rotor blade assembly 2 passes through the inner shroud 43 and the rotating drum 13. With the rotation of the inner shroud 43 and the rotating drum 13, the connecting rod 22 and the rotor blade 21 can be driven for synchronous rotation, thereby enabling the rotation of multiple rotor blade assemblies 2. During the rotation of the rotor blade assembly 2, the wind also acts on the rotor blade assembly 2, which drives the rotor blade assembly 2 in addition to rotating it and increases the rotation speed of the rotor blade assembly 2, so that the rotor blade assembly 2 can utilize wind energy to generate electricity.

[0049] The wind speed detection device 31 detects wind direction and speed in real time. When the rotor blade assembly 2 needs to be adjusted, it sends a control signal to the drive mechanism. First, the lifting rod 3211 is extended upward, raising the transmission rod 331, causing the first bevel gear 332 on the transmission rod 331 to mesh with the second bevel gear 333 on the connecting rod 22 in the rotor blade assembly 2. Then, the drive motor 3221 is started to drive the transmission rod 331 to rotate by a specified angle. The first bevel gear 332 on the synchronous transmission rod 331 also rotates by a corresponding angle, thereby driving the second bevel gear 333 to rotate by a specified angle to adjust the angle of the rotor blade assembly 2.In the normal power generation process, the angle of the rotor blade assembly 2 is generally adjusted according to the wind direction, thereby reducing wind resistance, fully utilizing wind energy, increasing the rotation speed of the rotor blade assembly 2, and improving power generation efficiency. However, when the wind speed is too high in nature, if the rotor blade speed of the rotor blade assemblies 2 also increases, it may cause damage to the rotor blade assemblies 2 and cause the wind turbine to fail. Therefore, at high wind speeds, the angle of the rotor blade assemblies 2 must be adjusted to increase the wind resistance, so as to reduce the rotor blade speed of the rotor blade assemblies 2 and ensure the safe operation of the wind turbine.

[0050] Although the embodiments of the present utility model are described in conjunction with the figures, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present utility model, and such modifications and variations are all within the scope of protection defined by the appended claims.

Claims

[1] Wind turbine with adjustable rotor blade angle, characterized by that it includes: a mounting assembly, the mounting assembly comprising a base (11), a sleeve (12) and a rotating drum (13), the sleeve (12) being mounted on the base (11) and the rotating drum (13) being rotatably mounted on the upper end of the sleeve (12); a plurality of rotor blade assemblies (2), the plurality of rotor blade assemblies (2) being arranged at intervals along the circumference of the rotating drum (13), one end of each rotor blade assembly (2) projecting into the rotating drum (13); an angle adjustment assembly, wherein the angle adjustment assembly comprises a wind speed detecting device (31), a drive mechanism and an angle adjustment mechanism (33), wherein the wind speed detection device (31) is arranged on the outer wall of the rotating drum (13), and wherein the drive mechanism is arranged in the mounting assembly and the wind speed detection device (31) is in signal communication with the drive mechanism, and wherein the angle adjustment mechanism (33) is arranged in the mounting assembly, the power input end of which is connected to the drive mechanism, while the power output end of which is connected to an end of the rotor blade assembly (2) that projects into the rotating drum (13). [2] Wind turbine with adjustable rotor blade angle according to claim 1, characterized byin that the angle adjustment mechanism (33) comprises a transmission rod (331), a first bevel gear (332) and a second bevel gear (333), wherein one end of the transmission rod (331) is located on the base (11) and is connected to the drive mechanism, while the other end projects from the sleeve (12) into the rotating drum (13), the first bevel gear (332) is arranged on the transmission rod (331), and wherein the second bevel gear (333) is arranged at one end of each group of rotor blade assemblies (2) which projects into the rotating drum (13), and the second bevel gear (333) meshes with the first bevel gear (332). [3] Wind turbine with adjustable rotor blade angle according to claim 2, characterized byin that the drive mechanism comprises a lifting drive component and a rotation drive component, wherein the lifting drive component is designed to drive the transmission rod (331) so that it is raised and lowered in the height direction of the sleeve (12), and the rotation drive component is designed to drive the transmission rod (331) so that it rotates about the axial direction of the sleeve (12). [4] Wind turbine with adjustable rotor blade angle according to claim 3, characterized by in that the lifting drive component comprises a lifting rod (3211), wherein the lifting rod (3211) is arranged in the base (11), and wherein the part of the transmission rod (331) located in the base (11) is provided with a mounting plate, and wherein the drive end of the lifting rod (3211) is connected to the mounting plate. [5] Wind turbine with adjustable rotor blade angle according to claim 4, characterized bythat a sliding block (3212) is arranged between the drive end of the lifting rod (3211) and the mounting plate. [6] Wind turbine with adjustable rotor blade angle according to claim 3, characterized by in that the rotation drive component comprises a drive motor (3221), a first transmission wheel (3222) and a second transmission wheel (3223), wherein the drive motor (3221) is arranged in the base (11) and its output shaft is connected to the first transmission wheel (3222), and wherein an end of the transmission rod (331) located in the base (11) is connected to the second transmission wheel (3223), and wherein a transmission belt (3224) is wound around the first transmission wheel (3222) and the second transmission wheel (3223). [7] Wind turbine with adjustable rotor blade angle according to claim 2, characterized bythat it further comprises a starting drive device of the wind turbine, wherein the starting drive device of the wind turbine is designed to drive the rotor blade assemblies (2) for rotation. [8] Wind turbine with adjustable rotor blade angle according to claim 7, characterized by in that the starting drive device of the wind turbine comprises a starter motor (41), a rotating shaft (42) and an inner casing (43), wherein the starter motor (41) is arranged in the transmission rod (331), one end of the rotating shaft (42) is connected to the drive end of the starter motor (41), while the other end of the rotating shaft (42) is connected to the inner casing (43), and the inner casing (43) is located inside the rotating drum (13) and is fixedly connected to the rotating drum (13). [9] Wind turbine with adjustable rotor blade angle according to claim 8, characterized bythat a block (44) is arranged on the top of the inner casing (43), the block (44) being connected to the rotating drum (13). [10] Wind turbine with adjustable rotor blade angle according to one of claims 1 to 9, characterized by that each rotor blade assembly (2) comprises a rotor blade (21) and a connecting rod (22), wherein one end of the connecting rod (22) is connected to the rotor blade (21), while the other end of the connecting rod (22) projects into the rotating drum (13).

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