A wind turbine and method of hoisting the same

Abstract

This invention relates to the field of wind turbine installation and maintenance, and discloses a wind turbine and its hoisting method, comprising: a tower, nacelle, rotor, generator, gearbox, yaw assembly, and pitch assembly. The top of the tower is rotatably connected to the bottom of the nacelle, the rotor is rotatably mounted on the nacelle, and the generator, gearbox, and yaw assembly are all housed inside the nacelle. This invention features two sets of wind vanes and anemometers on the nacelle. The primary set operates outside the nacelle, while the secondary set remains inside the nacelle, isolated from the external environment. During self-testing, the secondary set moves outside the nacelle to measure wind direction and speed to check the primary set's functionality, thus enabling timely detection of problems and avoiding the lag of traditional manual inspections and periodic checks. Furthermore, it can seamlessly take over measurement tasks in case of malfunction, providing real-time data for the yaw and pitch assemblies and avoiding prolonged downtime for maintenance.

Description

Technical Field

[0001] This invention relates to the field of wind turbine installation and maintenance, specifically to a wind turbine and its hoisting method. Background Technology

[0002] A wind turbine is a complex system that converts wind energy into electrical energy. Its core components include the rotor, transmission system, generator, yaw system, pitch system, nacelle, tower, and control system. Anemometers and wind vanes are installed on the top of the nacelle to sense wind conditions in real time and provide core data for yaw alignment, pitch control, and power regulation.

[0003] However, these anemometers and wind vanes are exposed to harsh environments such as salt spray, sandstorms, and hail for extended periods. Mechanical wear or lubrication failure can cause them to jam or drift. Therefore, manual inspection and regular calibration are necessary to ensure their accuracy. However, this detection method is inherently lagging, making it impossible to detect fault signs in real time. Sensor failure can trigger a chain of risks. For example, abnormal wind speed readings can lead to delayed turbine startup, accidental disconnection, or overspeed operation. Wind vane failure can cause persistent yaw errors, causing the turbine to deviate from its optimal angle of attack, significantly reducing power generation efficiency and exacerbating component fatigue damage. Therefore, this invention aims to provide a wind turbine and its installation method that avoids the lag inherent in traditional detection methods and prevents sensor system failure in generator sets. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a wind turbine generator and its hoisting method, thereby solving the technical problems in the prior art.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A wind turbine includes a tower, a nacelle, an rotor, a generator, a gearbox, a yaw assembly, and a pitch assembly. The top of the tower is rotatably connected to the bottom of the nacelle. The rotor is rotatably mounted on the nacelle. The generator, gearbox, and yaw assembly are all housed within the nacelle. The pitch assembly is housed within the rotor. An electric cylinder is fixedly installed within the nacelle. A lifting plate is fixedly installed on the movable end of the electric cylinder. The lifting plate is slidably installed within the nacelle. An opening is provided on the nacelle. When the electric cylinder extends, it causes the lifting plate to rise and pass through the opening. The tower, nacelle, and rotor are all hoisted using external hoisting equipment.

[0007] The bracket assembly consists of two bracket assemblies, each equipped with a wind vane and an anemometer. The two bracket assemblies are respectively fixedly installed on the lifting plate and the nacelle.

[0008] A hoisting assembly, which is connected to two support assemblies, is used to hoist the two support assemblies.

[0009] As a further aspect of the present invention: when the electric cylinder extends to raise the lifting plate, the vertical height difference between the two support components is no greater than 0.5m, the distance between the two support components is no greater than 2m, and the wind vane and anemometer on one of the support components are staggered from the wind vane and anemometer on the other support component.

[0010] As a further aspect of the present invention: a baffle is rotatably mounted on the cabin, the baffle is driven to rotate by a drive source, and the baffle is used to control the opening and closing of the opening.

[0011] As a further embodiment of the present invention: the bracket assembly includes a perforated fixing plate, a vertical plate, a top plate, and a slot; positioning rods are fixedly installed on both the lifting plate and the top of the nacelle; the pre-drilled holes of the perforated fixing plate are slidably connected to the positioning rods; the vertical plate is fixedly installed on the top of the perforated fixing plate; the top plate is fixedly installed on the top of the vertical plate; the wind vane and the anemometer are both fixedly installed on the top plate; and the slot is formed on the vertical plate.

[0012] As a further aspect of the present invention: the hoisting assembly includes a hoisting block, a U-shaped block, and a linkage assembly. The hoisting block is connected to an external hoisting device via a hoisting connector. The hoisting block is slidably engaged with two slots. Two symmetrically arranged insertion holes are provided on the hoisting block. The two U-shaped blocks are slidably installed inside the hoisting block, and the two U-shaped blocks are driven to move towards each other by the linkage assembly. When the external hoisting device hoists the hoisting block, the linkage assembly drives the two U-shaped blocks to move away from each other, so that the U-shaped blocks are inserted into the insertion holes. At this time, the U-shaped blocks and the hoisting block clamp and fix the vertical plate.

[0013] As a further embodiment of the present invention: the linkage component includes a horizontal rack plate and a gear, the gear is rotatably installed in the lifting block, the two horizontal rack plates are respectively fixedly connected to two U-shaped blocks, and the two horizontal rack plates are slidably installed in the lifting block, the gear is located between the two horizontal rack plates, and the gear meshes with the two horizontal rack plates.

[0014] As a further aspect of the present invention: the linkage component further includes a vertical rack plate and a counterweight. The vertical rack plate is slidably installed inside the lifting block, and the counterweight is fixedly connected to one end of the vertical rack plate. The counterweight is located below the lifting block, and the vertical rack plate meshes with a gear. When the external lifting equipment drives the lifting block to descend, so that the reserved hole of the perforated fixing plate is inserted along the positioning rod, the counterweight abuts against the top of the cabin. As the lifting block descends, the vertical rack plate moves into the lifting block. At this time, the vertical rack plate drives the gear to rotate, and the gear drives the two horizontal rack plates to move closer to each other, so that the U-shaped block moves away from the vertical plate.

[0015] A method for hoisting a wind turbine generator, the method being applied to a wind turbine generator as described above, the method comprising the following steps:

[0016] Step S1: First, lift the tower using external hoisting equipment, and then fix it on the ground;

[0017] Step S2: The nacelle is then lifted using external hoisting equipment and then fixedly installed on the top of the tower.

[0018] Step S3: Next, lift the impeller using external hoisting equipment and connect the impeller to the nacelle;

[0019] Step S4: Connect the two support assemblies to the hoisting assembly on the ground, and then hoist the hoisting equipment onto the cabin using external hoisting equipment;

[0020] Step S5: Extend the electric cylinder to allow the lifting plate to pass through the opening, and finally fix the two bracket assemblies on the lifting plate and the cabin respectively.

[0021] The beneficial effects of this invention are:

[0022] 1. In this invention, two sets of wind vanes and anemometers are installed on the nacelle. The primary set is used to work outside the nacelle for a long time, while the secondary set is kept inside the nacelle and isolated from the external environment. During self-test, the secondary set moves to the outside of the nacelle to measure the wind direction and wind speed to check whether the primary set is normal. This allows for timely detection of problems, avoids the lag of traditional manual inspections and periodic testing, and can seamlessly take over the measurement task in case of failure. It provides real-time data for the yaw and pitch components, and avoids unplanned shutdowns of the unit due to data loss.

[0023] 2. In this invention, when the electric cylinder extends and the lifting plate rises, the vertical height difference between the two support components is no greater than 0.5m, and the distance between the two support components is no greater than 2m. The core purpose is to ensure that when the wind turbine is in self-test mode, the wind vane and anemometer on the two support components are under almost the same wind environment conditions, so as to avoid vertical gradient error of the natural wind field caused by height difference and airflow separation difference caused by excessive lateral distance.

[0024] 3. In this invention, the opening and closing of the opening can be controlled by the baffle. When the wind turbine is in the initial state, the baffle will block the opening to prevent external dust and impurities from entering the nacelle through the opening. It should be noted that the baffle adopts a rotating opening and closing method, which is different from the traditional telescopic type. The rotating opening and closing baffle can also prevent the dust accumulated on the top of the baffle from falling into the nacelle through the opening when the opening is open, ensuring the stability of the environment inside the nacelle, and thus ensuring the accuracy of the wind direction and anemometer inside the nacelle. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the support assembly in this invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the cabin in this invention;

[0029] Figure 4 This is a schematic diagram of the engagement between the lifting plate and the opening in this invention;

[0030] Figure 5 This is a schematic diagram of the connection between the lifting block and the support assembly in this invention;

[0031] Figure 6 This is a cross-sectional structural schematic diagram of the lifting block in this invention;

[0032] Figure 7 This is a schematic diagram of the meshing of the vertical rack plate and the gear in this invention;

[0033] Figure 8 This is a schematic diagram of the bracket assembly installation structure in this invention.

[0034] In the diagram: 1. Tower; 2. Nacelle; 3. Impeller; 4. Support assembly; 401. Perforated fixing plate; 402. Vertical plate; 403. Top plate; 404. Slot; 5. Wind vane; 6. Anemometer; 7. Lifting plate; 8. Electric cylinder; 9. Cleaning assembly; 10. Opening; 11. Baffle; 12. Lifting block; 13. Insertion hole; 14. U-shaped block; 15. Counterweight block; 16. Horizontal rack plate; 17. Gear; 18. Vertical rack plate; 19. Lifting connector; 20. Positioning rod. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-8As shown, the present invention is a wind turbine generator, including a tower 1, a nacelle 2, an impeller 3, a generator, a gearbox, a yaw assembly, and a pitch assembly. The top of the tower 1 is rotatably connected to the bottom of the nacelle 2. The impeller 3 is rotatably mounted on the nacelle 2. The generator, gearbox, and yaw assembly are all located inside the nacelle 2. The pitch assembly is located inside the impeller 3. An electric cylinder 8 is fixedly installed inside the nacelle 2. A lifting plate 7 is fixedly installed on the movable end of the electric cylinder 8. The lifting plate 7 is slidably installed inside the nacelle 2. An opening 10 is provided on the nacelle 2. When the electric cylinder 8 extends, it causes the lifting plate 7 to rise and pass through the opening 10. The tower 1, nacelle 2, and impeller 3 are all hoisted by external hoisting equipment.

[0037] Support assembly 4, there are two support assemblies 4, each support assembly 4 is equipped with a wind vane 5 and an anemometer 6, and the two support assemblies 4 are respectively fixedly installed on the lifting plate 7 and the nacelle 2;

[0038] A hoisting assembly is connected to two support assemblies 4, and the hoisting assembly is used to hoist the two support assemblies 4.

[0039] In one embodiment, it should be noted that the external hoisting assembly includes a crawler crane, a lifting beam, wire ropes, shackles and lifting lugs, special tooling fixtures, etc. The above-mentioned components, as well as the nacelle 2, impeller 3, generator, gearbox, yaw assembly, pitch assembly, wind vane 5, anemometer 6, and electric cylinder 8 described in this invention, are all prior art. This invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of this invention.

[0040] The working principle of this invention is as follows: First, the tower 1, nacelle 2, and impeller 3 are hoisted using external hoisting equipment. After completion, as follows... Figure 1 As shown, the two support components 4 are connected to the hoisting components on the ground. Then, the hoisting equipment is lifted onto the nacelle 2 by external hoisting equipment. This is to hoist both support components 4 at once and improve the hoisting efficiency. Then, the electric cylinder 8 is extended to allow the lifting plate 7 to pass through the opening 10. Finally, the two support components 4 are fixedly installed on the lifting plate 7 and the nacelle 2 respectively to complete the hoisting operation. At this time, the support components 4, wind vane 5 and anemometer 6 installed on the nacelle 2 are the main groups, while the support components 4, wind vane 5 and anemometer 6 installed on the lifting plate 7 are the auxiliary groups.

[0041] The electric cylinder 8 retracts, causing the lifting plate 7 to move into the nacelle 2. The support assembly 4, wind vane 5, and anemometer 6 on the lifting plate 7 will also move into the nacelle 2. This is the initial state of the entire wind turbine, which is the normal operating state. At this time, the wind vane 5 and anemometer 6 fixedly installed on the support assembly 4 above the nacelle 2 will issue commands to the yaw assembly and pitch assembly according to the real-time monitored wind speed and direction, thereby adjusting the rotor 3 and the orientation of the nacelle 2 to enhance the wind power generation effect.

[0042] Considering that the wind vane 5 and anemometer 6 of the main unit are constantly exposed to the external environment, their mechanical structures and sensors are prone to problems. If a problem occurs, it can issue incorrect commands, leading to wind turbine malfunctions. Therefore, every so often, the electric cylinder 8 extends, causing the lifting plate 7 to rise and pass through the opening 10, moving the auxiliary unit's support assembly 4, wind vane 5, and anemometer 6 outside the nacelle 2. At this time, the entire wind turbine assembly enters a self-test state. Simultaneously, the wind vane 5 and anemometer 6 in both the main and auxiliary units measure wind direction and speed. The measurement result from the auxiliary unit is considered the most accurate. The measurement results of wind vane 5 and anemometer 6 are standard data. If the error between the measurement results of the main group's wind vane 5 and anemometer 6 and the standard data is within the threshold, it means that the main group's wind vane 5 and anemometer 6 are normal and can work. Conversely, if the error exceeds the threshold, it means that the main group's wind vane 5 and anemometer 6 are abnormal and will issue erroneous commands. In this case, an early warning message will be issued immediately to notify manual re-inspection. At the same time, the auxiliary group's wind vane 5 and anemometer 6 can take over the work of issuing commands to the yaw component and pitch component to ensure that the entire wind turbine unit does not completely fall into a shutdown state.

[0043] The reason for using the measurements from the auxiliary wind vane 5 and anemometer 6 as the standard data is that in the initial state of the wind turbine, the auxiliary wind vane 5 and anemometer 6 are always located inside the nacelle 2 and are not exposed to the external environment, so their mechanical structure and sensors are more reliable.

[0044] like Figures 1-2 As shown, in a preferred embodiment of the present invention, when the electric cylinder 8 extends and the lifting plate 7 rises, the vertical height difference between the two support components 4 is not greater than 0.5m, the distance between the two support components 4 is not greater than 2m, and the wind vane 5 and anemometer 6 on one of the support components 4 are staggered from the wind vane 5 and anemometer 6 on the other support component 4.

[0045] In practical application, when the electric cylinder 8 extends and the lifting plate 7 rises, the vertical height difference between the two support components 4 is no greater than 0.5m, and the distance between the two support components 4 is no greater than 2m. The core purpose is to ensure that when the wind turbine is in self-test mode, the wind vanes 5 and anemometers 6 on the two support components 4 are under almost the same wind environment conditions. This avoids vertical gradient errors in the natural wind field caused by height differences and airflow separation differences caused by excessive lateral spacing. Furthermore, the wind vanes 5 and anemometers 6 on the auxiliary group are staggered with those on the main group, so that the airflow inlet of each group of equipment is in an "undisturbed natural flow field". This prevents the wind vanes 5 and anemometers 6 on the main group from blocking the wind from blowing towards the wind vanes 5 and anemometers 6 on the auxiliary group. This minimizes the difference in the wind field environment and ensures the reliability of the measurement results.

[0046] like Figures 1-4 As shown, in a preferred embodiment of the present invention, a baffle 11 is rotatably mounted on the cabin 2. The baffle 11 is driven to rotate by a drive source and is used to control the opening and closing of the opening 10.

[0047] The cabin 2 is equipped with a cleaning component 9, which is used to clean the wind vane 5 and anemometer 6 located in the cabin 2.

[0048] In one embodiment, the cleaning component 9 includes components such as a compressed air tank, an air pump, a pressure regulating valve, and an air nozzle. These components are all prior art, and the present invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of the present invention.

[0049] In practical application, the baffle 11 can control the opening and closing of the opening 10. When the wind turbine is in the initial state, the baffle 11 blocks the opening 10 to prevent external dust and impurities from entering the nacelle 2 through the opening 10. It should be noted that the baffle 11 adopts a rotating opening and closing method, which is different from the traditional telescopic type. The rotating opening and closing baffle 11 can also prevent the dust accumulated on the top of the baffle 11 from falling into the nacelle 2 through the opening 10 when the opening 10 is open, ensuring the stability of the environment inside the nacelle 2, which in turn ensures the accuracy of the wind vane 5 and the anemometer 6 inside the nacelle 2.

[0050] Furthermore, when the lifting plate 7 returns to the cabin 2, the wind direction instrument 5 and the anemometer 6 will pass through the cleaning component 9. The cleaning component 9 can blow and clean the wind direction instrument 5 and the anemometer 6 to prevent impurities and dust from adhering to the auxiliary wind direction instrument 5 and the anemometer 6.

[0051] like Figures 1-8As shown, in a preferred embodiment of the present invention, the support assembly 4 includes a perforated fixing plate 401, a vertical plate 402, a top plate 403, and a slot 404. Positioning rods 20 are fixedly installed on the top of both the lifting plate 7 and the cabin 2. The pre-drilled holes of the perforated fixing plate 401 are slidably connected to the positioning rods 20. The vertical plate 402 is fixedly installed on the top of the perforated fixing plate 401. The top plate 403 is fixedly installed on the top of the vertical plate 402. The wind vane 5 and the anemometer 6 are both fixedly installed on the top plate 403. The slot 404 is formed on the vertical plate 402.

[0052] Specifically, the hoisting assembly includes a hoisting block 12, a U-shaped block 14, and a linkage assembly. The hoisting block 12 is connected to external hoisting equipment via a hoisting connector 19. The hoisting block 12 is slidably engaged with two slots 404. The hoisting block 12 has two symmetrically arranged insertion holes 13. The two U-shaped blocks 14 are slidably installed inside the hoisting block 12, and the two U-shaped blocks 14 are driven by the linkage assembly to move towards each other. When the external hoisting equipment hoists the hoisting block 12, the linkage assembly drives the two U-shaped blocks 14 to move away from each other, so that the U-shaped blocks 14 are inserted into the insertion holes 13. At this time, the U-shaped blocks 14 and the hoisting block 12 clamp and fix the vertical plate 402.

[0053] In one embodiment, to improve the overall hoisting efficiency of the wind turbine, two perforated fixing plates 401 are placed separately, with the distance between them matching the distance between the positioning rods 20 on the nacelle 2 and the positioning rods 20 on the lifting plate 7. Then, as follows... Figure 5 Taking the example shown, the lifting block 12 is inserted from left to right along the slot 404 on the vertical plate 402. At this time, the lifting block 12 and the slot 404 are engaged, forming a rigid connection structure. Further, the two U-shaped blocks 14 are driven away from each other by the linkage component, so that the U-shaped blocks 14 are inserted into the insertion hole 13. At this time, the U-shaped blocks 14 and the lifting block 12 clamp and fix the vertical plate 402. The two vertical plates 402 are tightly clamped between the U-shaped blocks 14 and the lifting block 12. Specifically, the clamping of the lifting block 12 and the U-shaped blocks 14 restricts the lateral displacement of the vertical plate 402, while the lifting block 12 slides and engages in the slot 404, restricting the longitudinal displacement of the vertical plate 402. This ensures the stability of the two support components 4 during lifting.

[0054] like Figures 5-8 As shown, in a preferred embodiment of the present invention, the linkage component includes a horizontal rack plate 16 and a gear 17. The gear 17 is rotatably installed in the lifting block 12. The two horizontal rack plates 16 are respectively fixedly connected to two U-shaped blocks 14, and the two horizontal rack plates 16 are slidably installed in the lifting block 12. The gear 17 is located between the two horizontal rack plates 16, and the gear 17 meshes with the two horizontal rack plates 16.

[0055] Specifically, the linkage component also includes a vertical rack plate 18 and a counterweight 15. The vertical rack plate 18 is slidably installed inside the lifting block 12. The counterweight 15 is fixedly connected to one end of the vertical rack plate 18 and is located below the lifting block 12. The vertical rack plate 18 meshes with the gear 17. When the external lifting equipment drives the lifting block 12 to descend, so that the reserved hole of the perforated fixing plate 401 is inserted along the positioning rod 20, the counterweight 15 abuts against the top of the cabin 2. As the lifting block 12 descends, the vertical rack plate 18 moves into the lifting block 12. At this time, the vertical rack plate 18 drives the gear 17 to rotate. The gear 17 drives the two horizontal rack plates 16 to move closer to each other, so that the U-shaped block 14 moves away from the vertical plate 402.

[0056] In practical application, when the lifting block 12 is suspended in the air, the weight of the counterweight 15 causes the vertical rack plate 18 to move downward within the lifting block 12. The vertical rack plate 18 then drives the gear 17 to rotate, which in turn causes the two horizontal rack plates 16 to move away from each other. At this point, the horizontal rack plates 16 cause the U-shaped block 14 to tightly abut against the vertical plate 402, achieving a gravity-based self-locking effect. This means that simply lifting the lifting block 12 directly locks the two vertical plates 402. During installation, when external lifting equipment lowers the lifting block 12, the perforated fixing... When the pre-drilled hole of plate 401 is inserted along the positioning rod 20, the counterweight 15 abuts against the top of the cabin 2. As the lifting block 12 descends, the vertical rack plate 18 moves into the lifting block 12. At this time, the vertical rack plate 18 drives the gear 17 to rotate, and the gear 17 drives the two horizontal rack plates 16 to move closer to each other, so that the U-shaped block 14 moves away from the vertical plate 402. This achieves the purpose of automatic unlocking. After the perforated fixing plate 401 and the positioning rod 20 are installed, the lifting block 12 can be directly pulled out from the slot 404. This can improve the efficiency of lifting and the lifting block 12 can be reused.

[0057] Please see Figures 1-8 As shown, the present invention provides a method for hoisting a wind turbine generator set. This method is applied to a wind turbine generator set as described in the above embodiments, and includes the following steps:

[0058] Step S1: First, lift the tower 1 using external hoisting equipment, and then fix it on the ground;

[0059] Step S2: Then, the nacelle 2 is lifted by external hoisting equipment and then fixedly installed on the top of the tower 1;

[0060] Step S3: Next, lift the impeller 3 using external hoisting equipment and connect the impeller 3 to the nacelle 2;

[0061] Step S4: Connect the two support assemblies 4 to the hoisting assembly on the ground, and then hoist the hoisting equipment onto the cabin 2 using external hoisting equipment;

[0062] Step S5: Extend the electric cylinder 8 to allow the lifting plate 7 to pass through the opening 10, and finally fix the two bracket assemblies 4 on the lifting plate 7 and the cabin 2 respectively.

[0063] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A wind turbine generator, comprising a tower (1), a nacelle (2), an impeller (3), a generator, a gearbox, a yaw assembly, and a pitch assembly, characterized in that: The top of the tower (1) is rotatably connected to the bottom of the nacelle (2). The impeller (3) is rotatably mounted on the nacelle (2). The generator, gearbox and yaw assembly are all located in the nacelle (2). The pitch assembly is located in the impeller (3). An electric cylinder (8) is fixedly installed in the nacelle (2). A lifting plate (7) is fixedly installed on the movable end of the electric cylinder (8). The lifting plate (7) is slidably installed in the nacelle (2). An opening (10) is provided on the nacelle (2). When the electric cylinder (8) extends, the electric cylinder (8) causes the lifting plate (7) to rise and pass through the opening (10). The tower (1), nacelle (2) and impeller (3) are all hoisted by external hoisting equipment. The bracket assembly (4) consists of two components, each of which is equipped with a wind vane (5) and an anemometer (6). The two bracket assemblies (4) are respectively fixedly installed on the lifting plate (7) and the cabin (2). A hoisting assembly, which is connected to two support assemblies (4), is used to hoist the two support assemblies (4); The bracket assembly (4) includes a perforated fixing plate (401), a vertical plate (402), a top plate (403), and a slot (404), wherein the slot (404) is formed on the vertical plate (402); The hoisting assembly includes a hoisting block (12), a U-shaped block (14), and a linkage assembly. The hoisting block (12) is connected to an external hoisting device through a hoisting connector (19). The hoisting block (12) is slidably engaged with two slots (404). The hoisting block (12) has two symmetrically arranged insertion holes (13). The two U-shaped blocks (14) are slidably installed inside the hoisting block (12). The two U-shaped blocks (14) are driven by the linkage assembly to move towards each other. When the external hoisting device hoists the hoisting block (12), the linkage assembly drives the two U-shaped blocks (14) to move away from each other, so that the U-shaped blocks (14) are inserted into the insertion holes (13). At this time, the U-shaped blocks (14) and the hoisting block (12) clamp and fix the vertical plate (402).

2. A wind turbine generator set according to claim 1, characterized in that, When the electric cylinder (8) extends and the lifting plate (7) rises, the vertical height difference between the two support components (4) is no greater than 0.5m, the distance between the two support components (4) is no greater than 2m, and the wind vane (5) and anemometer (6) on one of the support components (4) are staggered from the wind vane (5) and anemometer (6) on the other support component (4).

3. A wind turbine generator set according to claim 1, characterized in that, A baffle (11) is rotatably mounted on the cabin (2). The baffle (11) is driven to rotate by a drive source and is used to control the opening (10) to open and close.

4. A wind turbine generator set according to claim 1, characterized in that, The lifting plate (7) and the top of the cabin (2) are both fixedly installed with positioning rods (20). The reserved holes of the perforated fixing plate (401) are slidably connected with the positioning rods (20). The vertical plate (402) is fixedly installed on the top of the perforated fixing plate (401). The top plate (403) is fixedly installed on the top of the vertical plate (402). The wind vane (5) and the anemometer (6) are both fixedly installed on the top plate (403).

5. A wind turbine generator set according to claim 1, characterized in that, The linkage component includes a horizontal rack plate (16) and a gear (17). The gear (17) is rotatably installed in the lifting block (12). The two horizontal rack plates (16) are respectively fixedly connected to two U-shaped blocks (14), and the two horizontal rack plates (16) are slidably installed in the lifting block (12). The gear (17) is located between the two horizontal rack plates (16), and the gear (17) meshes with the two horizontal rack plates (16).

6. A wind turbine generator set according to claim 5, characterized in that, The linkage assembly also includes a vertical rack plate (18) and a counterweight (15). The vertical rack plate (18) is slidably installed in the hoisting block (12). The counterweight (15) is fixedly connected to one end of the vertical rack plate (18). The counterweight (15) is located below the hoisting block (12). The vertical rack plate (18) meshes with the gear (17). When the external hoisting equipment drives the hoisting block (12) to descend, the pre-drilled hole of the perforated fixing plate (401) is inserted along the positioning rod (20). The counterweight (15) abuts against the top of the cabin (2). As the hoisting block (12) descends, the vertical rack plate (18) moves into the hoisting block (12). At this time, the vertical rack plate (18) drives the gear (17) to rotate. The gear (17) drives the two horizontal rack plates (16) to move closer to each other, so that the U-shaped block (14) moves away from the vertical plate (402).

7. A method for hoisting a wind turbine generator set, characterized in that, The method is applied to a wind turbine generator as described in any one of claims 1-6, and the method includes the following steps: Step S1: First, lift the tower (1) using external hoisting equipment, and then fix it on the ground; Step S2: The nacelle (2) is then lifted by external hoisting equipment and fixedly installed on the top of the tower (1); Step S3: Next, lift the impeller (3) using external hoisting equipment and connect the impeller (3) to the nacelle (2); Step S4: Connect the two support assemblies (4) to the hoisting assembly on the ground, and then hoist the hoisting equipment onto the cabin (2) using external hoisting equipment; Step S5: Extend the electric cylinder (8) to allow the lifting plate (7) to pass through the opening (10), and finally fix the two bracket assemblies (4) on the lifting plate (7) and the cabin (2) respectively.

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