Cabin hoisting hole cover plate of wind turbine generator

Abstract

The utility model discloses a cabin hoisting hole cover plate of a wind turbine generator, which comprises a working table, an upper layer rectangular hoisting hole is arranged at the top of the working table, an upper layer sealing cover is clamped at the top of the upper layer rectangular hoisting hole in a sliding manner, and a mounting base is arranged at the bottom of the working table corresponding to the bottom end of the upper layer rectangular hoisting hole. According to the ventilation device, winged insects and cotton fibers can be blocked through the isolation protection net plate, it is guaranteed that no foreign matter enters a cabin during ventilation, the bottom of the cabin can be sealed through the sealing sliding cover, and the sealing sliding cover can be used for sealing the bottom of the cabin. And the protective outer frame is mounted at the top of the mounting guide frame through the connecting angle plates, so that the gap between the bottom surface of the working table and the top surface of the mounting guide frame is protected through the protective outer frame, and the use convenience and use safety of the cabin hoisting hole cover plate are effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of nacelle hoisting hole cover plates, specifically a nacelle hoisting hole cover plate for a wind turbine. Background Technology

[0002] A wind turbine generator set includes a wind rotor and a generator. The wind rotor consists of blades, a hub, and reinforcement components. It has functions such as generating electricity by rotating the blades under wind power and rotating the generator head. The wind power generation system consists of a wind turbine generator set, a tower supporting the generator set, a battery charging controller, an inverter, a load unloader, a grid connection controller, and a battery bank. During the operation of the wind turbine generator set, materials need to be hoisted into the nacelle through the hoisting holes, and hole cover plates are required when sealing the hoisting holes.

[0003] However, the lack of a quick-replacement structure for the current cabin hoisting manhole cover makes it impossible to quickly disassemble and replace it during use, thus reducing the ease of use of the cabin hoisting manhole cover. Utility Model Content

[0004] This utility model provides a nacelle hoisting hole cover for wind turbines, which can effectively solve the problem mentioned in the background art that the nacelle hoisting hole cover cannot be quickly disassembled and replaced during use due to the lack of a desired quick replacement and disassembly structure, thus reducing the convenience of using the nacelle hoisting hole cover.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a nacelle lifting hole cover for a wind turbine, including a worktable, an upper rectangular lifting hole at the top of the worktable, and an upper sealing cover slidably engaging at the top of the upper rectangular lifting hole;

[0006] The bottom of the workbench is provided with a multi-layer snap-fit ​​protective sealing mechanism.

[0007] The bottom multi-layer snap-fit ​​protective sealing mechanism includes a mounting base, a mounting guide frame, a connecting bevel plate, a mounting guide groove, a sealing sliding cover, an isolation protective mesh plate, a connecting corner plate, and a protective outer frame;

[0008] A mounting base is provided at the bottom of the workbench corresponding to the bottom of the upper rectangular lifting hole. A mounting guide frame is fixedly installed at the top of the mounting base. Connecting corner plates are evenly fixedly connected to the bottom of both sides of the mounting guide frame. Mounting guide grooves are evenly spaced along the vertical direction on the inner side of the mounting guide frame. A sealing cover is slidably engaged inside the mounting guide groove at the top position of the mounting guide frame. An isolation and protective mesh plate is slidably engaged inside the mounting guide groove at the bottom position of the mounting guide frame. Connecting corner plates are fixedly engaged at the four corners of the top surface of the mounting guide frame. A protective outer frame is fixedly engaged on the outer side of the connecting corner plates at the top position of the mounting guide frame.

[0009] Preferably, the inner circle size of the upper rectangular lifting hole is larger than the inner circle size of the installation guide frame, the top of the upper sealing cover is symmetrically provided with a pull handle, and the inner side of the upper sealing cover is tightly slidably fitted with the top surface of the upper rectangular lifting hole.

[0010] Preferably, the side of the connecting bend plate is tightly connected to the side of the mounting base, and the connecting bend plate is connected to the fan housing by bolts.

[0011] Preferably, the inner side of the installation guide groove is tightly slidably fitted with the sealing sliding cover and the outer side of the isolation and protection mesh plate, and the screen inside the isolation and protection mesh plate is a 20-mesh screen.

[0012] Preferably, the outer side of the connecting corner plate is tightly fitted to the inner wall of the protective outer frame, and the bottom surface of the protective outer frame is flush with the top surface of the installation guide frame.

[0013] Preferably, an auxiliary locking and placement mechanism is provided on the top of the workbench surface;

[0014] The auxiliary locking and placement mechanism includes a guardrail, a support plate, a mounting crossbar, a connecting crossbar, connecting bolts, a limiting plate, and a limiting rubber rod.

[0015] The top surface of the workbench is equipped with guardrails on both sides of the upper rectangular lifting hole. A support plate is fixedly connected to one side of the workbench at the bottom position of the guardrail. A mounting crossbar is embedded in one side of the guardrail. A connecting crossbar is provided in the middle of the side of the mounting crossbar. A connecting bolt is threadedly installed at the middle of one end of the connecting crossbar on the other side of the guardrail. A limit plate is fixedly connected to the middle of one end of the connecting crossbar. Limit sticks are glued to the middle of both ends of the back of the limit plate.

[0016] Preferably, the end face of the connecting crossbar is in close contact with the side face of the mounting crossbar, the connecting bolt passes through the side face of the connecting crossbar, and the end of the connecting bolt is in close contact with the side face of the connecting crossbar.

[0017] Preferably, the length of the side groove of the limiting plate is greater than the length of the sealing slide cover and the isolation protective mesh plate, and the support plate is aligned with the bottom surface of the limiting plate.

[0018] Preferably, the top surface of the workbench is provided with auxiliary side support mechanisms at both ends corresponding to the upper rectangular lifting hole;

[0019] The auxiliary side support mechanism includes a connecting side rod, a snap-fit ​​circular hole, a snap-fit ​​narrow plate, a snap-fit ​​cylinder, and a guide inclined plate;

[0020] The top surface of the workbench is provided with connecting side rods at both ends of the upper rectangular lifting hole. The top surface of the connecting side rods is evenly provided with snap-fit ​​circular holes. The top of the connecting side rods is provided with snap-fit ​​narrow plates. The bottom surface of the snap-fit ​​narrow plates is fixedly connected with snap-fit ​​cylinders at the positions corresponding to the snap-fit ​​circular holes. A guide inclined plate is fixedly connected to one side of the snap-fit ​​narrow plates.

[0021] Preferably, the bottom surface of the snap-fit ​​narrow plate is in close contact with the top surface of the connecting side rod, the outer side of the snap-fit ​​cylinder is in close contact with the inner wall of the snap-fit ​​circular hole, and anti-slip strips are evenly provided on the top surface of the guide inclined plate.

[0022] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use.

[0023] 1. A multi-layer snap-fit ​​protective sealing mechanism is installed at the bottom. The installation guide frame and its components can be installed to the bottom of the workbench via the mounting base. The sealing slide cover and the isolation protective mesh plate are installed inside the installation guide frame via the installation guide groove. The isolation protective mesh plate can block flying insects and lint, ensuring that no foreign objects enter the cabin during ventilation. The sealing slide cover can seal the bottom of the cabin. The protective outer frame is installed to the top of the installation guide frame via the connecting corner plate, so that the gap between the bottom surface of the workbench and the top surface of the installation guide frame is protected by the protective outer frame, thereby effectively improving the convenience and safety of the cabin hoisting hole cover.

[0024] 2. An auxiliary snap-fit ​​placement mechanism is set up. The upper rectangular hanging hole can be protected on both sides through the guardrail. The limiting plate is installed on the side of the guardrail by connecting crossbar and connecting bolt. Then, the replaced sealing cover and isolation protective net plate are placed vertically on the side of the guardrail by the limiting plate. The bottom of the limiting plate is limited by the support plate, thus realizing the quick and convenient storage of the sealing cover and isolation protective net plate.

[0025] 3. An auxiliary side support mechanism is provided. The connecting side rod and the snap-fit ​​round hole are used to snap the narrow plate to one side of the upper rectangular lifting hole. The snap-fit ​​round hole and the snap-fit ​​cylinder are used to limit the guide inclined plate, thereby effectively reducing the height difference between the top surface of the upper rectangular lifting hole and the top surface of the worktable. This further expands the function of the cabin lifting hole cover and optimizes the use of the cabin lifting hole cover. Attached Figure Description

[0026] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0027] In the attached diagram:

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the installation structure of the protective railing of this utility model;

[0030] Figure 3 This is a schematic diagram of the bottom multi-layer snap-fit ​​protective sealing mechanism of this utility model;

[0031] Figure 4 This is a schematic diagram of the auxiliary card-attaching and placement mechanism of this utility model;

[0032] Figure 5 This is a schematic diagram of the auxiliary side support mechanism of this utility model;

[0033] The diagram labels are: 1. Workbench surface; 2. Upper rectangular lifting hole; 3. Upper sealing cover.

[0034] 4. Bottom multi-layer snap-fit ​​protective sealing mechanism; 401. Mounting base; 402. Mounting guide frame; 403. Connecting corner plate; 404. Mounting guide groove; 405. Sealing sliding cover; 406. Isolation and protective mesh plate; 407. Connecting corner plate; 408. Protective outer frame;

[0035] 5. Auxiliary locking and placement mechanism; 501. Guardrail; 502. Support plate; 503. Mounting crossbar; 504. Connecting crossbar; 505. Connecting bolt; 506. Limiting plate; 507. Limiting rubber rod;

[0036] 6. Auxiliary side support mechanism; 601. Connecting side rod; 602. Snap-fit ​​round hole; 603. Snap-fit ​​narrow plate; 604. Snap-fit ​​cylinder; 605. Guide inclined plate. Detailed Implementation

[0037] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0038] Example: Figure 1-5 As shown, this utility model provides a technical solution: a nacelle lifting hole cover for a wind turbine, including a worktable 1, an upper rectangular lifting hole 2 on the top of the worktable 1, an upper sealing cover 3 slidably engaged with the top of the upper rectangular lifting hole 2, the inner circle size of the upper rectangular lifting hole 2 being larger than the inner circle size of the installation guide frame 402, and pull handles symmetrically arranged on the top of the upper sealing cover 3, and the inner side of the upper sealing cover 3 being tightly slidably fitted with the top surface of the upper rectangular lifting hole 2;

[0039] The bottom of the workbench 1 is equipped with a multi-layer snap-fit ​​protective sealing mechanism 4;

[0040] The bottom multi-layer snap-fit ​​protective sealing mechanism 4 includes a mounting base 401, a mounting guide frame 402, a connecting bend plate 403, a mounting guide groove 404, a sealing sliding cover 405, an isolation protective mesh plate 406, a connecting corner plate 407, and a protective outer frame 408;

[0041] A mounting base 401 is provided at the bottom of the workbench 1 corresponding to the bottom of the upper rectangular lifting hole 2. A mounting guide frame 402 is fixedly installed at the top of the mounting base 401. Connecting elbow plates 403 are evenly fixedly connected to the bottom of both sides of the mounting guide frame 402. The sides of the connecting elbow plates 403 are tightly connected to the sides of the mounting base 401, and the connecting elbow plates 403 are connected to the fan housing by bolts.

[0042] The inner side of the installation guide frame 402 is provided with installation guide grooves 404 evenly spaced vertically. Inside the installation guide groove 404, a sealing cover 405 is slidably engaged with the top position of the installation guide frame 402. Inside the installation guide groove 404, an isolation and protective mesh plate 406 is slidably engaged with the bottom position of the installation guide frame 402. The inner side of the installation guide groove 404 is tightly slidably fitted with the outer side of the sealing cover 405 and the isolation and protective mesh plate 406. Inside the isolation and protective mesh plate 406, there is a 20-mesh screen.

[0043] At each of the four corners of the top surface of the installation guide frame 402, a connecting corner plate 407 is fixedly snapped into place. A protective outer frame 408 is fixedly snapped into place on the outer side of the connecting corner plate 407 corresponding to the top position of the installation guide frame 402. The outer side of the connecting corner plate 407 is tightly fitted to the inner wall of the protective outer frame 408. The bottom surface of the protective outer frame 408 is flush with the top surface of the installation guide frame 402. The installation guide frame 402 and its components can be installed onto the bottom of the workbench 1 via the installation base 401. The sealing slide cover 405 and the isolation cover are connected via the installation guide groove 404. The protective mesh plate 406 is installed inside the installation guide frame 402. The protective mesh plate 406 can block flying insects and cotton wool, ensuring that no foreign objects enter the cabin during ventilation. The bottom of the cabin can be sealed by the sealing sliding cover 405. The protective outer frame 408 is installed on the top of the installation guide frame 402 by the connecting corner plate 407. The protective outer frame 408 protects the gap between the bottom surface of the workbench 1 and the top surface of the installation guide frame 402, thereby effectively improving the convenience and safety of the cabin hoisting hole cover.

[0044] The top of the workbench 1 is equipped with an auxiliary card-holding and placement mechanism 5;

[0045] The auxiliary locking and placement mechanism 5 includes a guardrail 501, a support plate 502, a mounting crossbar 503, a connecting crossbar 504, a connecting bolt 505, a limiting plate 506, and a limiting rubber rod 507.

[0046] A guardrail 501 is installed on both sides of the upper rectangular lifting hole 2 on the top surface of the workbench 1. A support plate 502 is fixedly connected to one side of the workbench 1 at the bottom position of the guardrail 501. A mounting crossbar 503 is embedded in one side of the guardrail 501. A connecting crossbar 504 is provided in the middle of the side of the mounting crossbar 503. A connecting bolt 505 is installed on the other side of the connecting crossbar 504 through a thread on one end of the connecting crossbar 504, corresponding to the middle of the other side of the guardrail 501. The end face of the connecting crossbar 504 is tightly fitted with the side of the mounting crossbar 503. The connecting bolt 505 passes through the side of the connecting crossbar 504, and the end of the connecting bolt 505 is tightly fitted with the side of the connecting crossbar 504.

[0047] A limiting plate 506 is fixedly connected to the middle of one end of the connecting crossbar 504. Limiting sticks 507 are glued to the middle of both ends of the back of the limiting plate 506. The length of the side groove of the limiting plate 506 is greater than the length of the sealing slide cover 405 and the isolation protective net plate 406. The support plate 502 is aligned with the bottom surface of the limiting plate 506. The upper rectangular lifting hole 2 can be protected by the guardrail 501. The limiting plate 506 is installed on the side of the guardrail 501 by the connecting crossbar 504 and the connecting bolts 505. Then, the replaced sealing slide cover 405 and isolation protective net plate 406 are placed vertically on the side of the guardrail 501 by the limiting plate 506. The bottom of the limiting plate 506 is limited by the support plate 502, thus realizing the quick and convenient storage of the sealing slide cover 405 and the isolation protective net plate 406.

[0048] The top surface of the workbench 1 is equipped with auxiliary side support mechanisms 6 at both ends of the upper rectangular lifting hole 2;

[0049] The auxiliary side support mechanism 6 includes a connecting side rod 601, a snap-fit ​​circular hole 602, a snap-fit ​​narrow plate 603, a snap-fit ​​cylinder 604, and a guide inclined plate 605;

[0050] The top surface of the workbench 1 is equipped with connecting side rods 601 at both ends of the upper rectangular lifting hole 2. The top surface of each connecting side rod 601 has evenly spaced locking holes 602. A locking narrow plate 603 is located at the top of the connecting side rod 601. A locking cylinder 604 is fixedly connected to the bottom surface of the locking narrow plate 603 at the position corresponding to the inside of the locking hole 602. A guide inclined plate 605 is fixedly connected to one side of the locking narrow plate 603. The bottom surface of the locking narrow plate 603 is tightly fitted to the top surface of the connecting side rod 601, and the outer side of the locking cylinder 604 is also fitted to the locking cylinder. The inner walls of the connecting round hole 602 fit tightly together, and the top surface of the guide inclined plate 605 is evenly provided with anti-slip strips. The connecting side rod 601 cooperates with the connecting round hole 602 to attach the connecting narrow plate 603 to one side of the upper rectangular lifting hole 2. The connecting round hole 602 and the connecting cylinder 604 cooperate to limit the guide inclined plate 605, thereby effectively reducing the height difference between the top surface of the upper rectangular lifting hole 2 and the top surface of the workbench 1, further expanding the function of the cabin lifting hole cover and optimizing the use of the cabin lifting hole cover.

[0051] The working principle and usage process of this utility model are as follows: In practical applications, when it is necessary to lift objects into the nacelle of a wind turbine generator, opening the upper sealing cover 3 allows the upper rectangular lifting hole 2 to communicate with the lower cavity of the worktable 1. The installation guide frame 402 and its components can be installed at the bottom of the worktable 1 via the installation base 401. The sealing sliding cover 405 and the isolation protective mesh plate 406 can be installed inside the installation guide frame 402 via the installation guide groove 404. The isolation protective mesh plate 406 can block flying insects and cotton fibers, ensuring that no foreign objects enter the nacelle during ventilation. The sealing sliding cover 405 can seal the bottom of the nacelle. The protective outer frame 408 can be installed on the top of the installation guide frame 402 via the connecting corner plate 407, so that the protective outer frame 408 can protect the gap between the bottom surface of the worktable 1 and the top surface of the installation guide frame 402, thereby effectively improving the convenience and safety of using the nacelle lifting hole cover.

[0052] When the sealing sliding cover 405 and the isolation protective mesh plate 406 need to be temporarily stored, the upper rectangular lifting hole 2 can be protected by the guardrail 501. The limiting plate 506 is installed on the side of the guardrail 501 by the connecting crossbar 504 and the connecting bolt 505. Then, the replaced sealing sliding cover 405 and the isolation protective mesh plate 406 are placed vertically on the side of the guardrail 501 by the limiting plate 506. The bottom of the limiting plate 506 is limited by the support plate 502, thus realizing the quick and convenient storage of the sealing sliding cover 405 and the isolation protective mesh plate 406.

[0053] When assisting in the handling of objects lifted by the upper rectangular lifting hole 2, the connecting side rod 601, in conjunction with the locking round hole 602, locks the locking narrow plate 603 to one side of the upper rectangular lifting hole 2. The locking round hole 602 and the locking cylinder 604 engage to limit the guide inclined plate 605, thereby effectively reducing the height difference between the top surface of the upper rectangular lifting hole 2 and the top surface of the workbench 1. This further expands the function of the cabin lifting hole cover and optimizes the use of the cabin lifting hole cover.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A nacelle hoisting hole cover for a wind turbine generator, comprising a worktable (1), characterized in that: The workbench (1) is provided with an upper rectangular lifting hole (2) at the top, and an upper sealing cover (3) is slidably engaged at the top of the upper rectangular lifting hole (2). The bottom of the workbench (1) is provided with a multi-layer snap-fit ​​protective sealing mechanism (4). The bottom multi-layer snap-fit ​​protective sealing mechanism (4) includes a mounting base (401), a mounting guide frame (402), a connecting corner plate (403), a mounting guide groove (404), a sealing sliding cover (405), an isolation protective mesh plate (406), a connecting corner plate (407), and a protective outer frame (408). A mounting base (401) is provided at the bottom of the workbench (1) corresponding to the bottom of the upper rectangular lifting hole (2). A mounting guide frame (402) is fixedly installed at the top of the mounting base (401). Connecting corner plates (403) are evenly fixedly connected to the bottom of both sides of the mounting guide frame (402). A mounting guide groove (404) is evenly and equidistantly opened on the inner side of the mounting guide frame (402) along the vertical direction. A sealing cover (405) is slidably engaged with the top position of the mounting guide frame (402) inside the mounting guide groove (404). An isolation and protective mesh plate (406) is slidably engaged with the bottom position of the mounting guide frame (402) inside the mounting guide groove (404). Connecting corner plates (407) are fixedly engaged with the four corners of the top surface of the mounting guide frame (402). A protective outer frame (408) is fixedly engaged with the outer side of the connecting corner plate (407) corresponding to the top position of the mounting guide frame (402).

2. The nacelle hoisting hole cover of a wind turbine generator according to claim 1, characterized in that, The inner circle size of the upper rectangular lifting hole (2) is larger than the inner circle size of the installation guide frame (402). The upper sealing cover (3) is symmetrically provided with a pull handle on the top, and the inner side of the upper sealing cover (3) and the top surface of the upper rectangular lifting hole (2) are tightly slidably fitted together.

3. The nacelle hoisting hole cover of a wind turbine generator according to claim 1, characterized in that, The side of the connecting bend plate (403) is tightly joined to the side of the mounting base (401), and the connecting bend plate (403) is connected to the fan housing by bolts.

4. The nacelle hoisting hole cover of a wind turbine generator according to claim 1, characterized in that, The inner side of the installation guide groove (404) is tightly slidably fitted with the outer side of the sealing sliding cover (405) and the isolation and protection mesh plate (406), and the inner screen of the isolation and protection mesh plate (406) is a 20-mesh screen.

5. A nacelle hoisting hole cover for a wind turbine according to claim 1, characterized in that, The outer side of the connecting corner plate (407) is tightly fitted to the inner wall of the protective outer frame (408), and the bottom surface of the protective outer frame (408) is flush with the top surface of the installation guide frame (402).

6. The nacelle hoisting hole cover of a wind turbine generator according to claim 1, characterized in that, The workbench (1) is provided with an auxiliary snap-fit ​​placement mechanism (5) on its top. The auxiliary snap-fit ​​placement mechanism (5) includes a guardrail (501), a support plate (502), a mounting crossbar (503), a connecting crossbar (504), a connecting bolt (505), a limiting plate (506), and a limiting rubber rod (507). The top surface of the workbench (1) is provided with guardrails (501) on both sides of the upper rectangular lifting hole (2). A support plate (502) is fixedly connected to one side of the workbench (1) at the bottom of the guardrail (501). A mounting crossbar (503) is embedded in one side of the guardrail (501). A connecting crossbar (504) is provided in the middle of the side of the mounting crossbar (503). A connecting bolt (505) is installed on the other side of the connecting crossbar (504) through a thread on one end of the connecting crossbar (504) corresponding to the other side of the guardrail (501). A limit plate (506) is fixedly connected to the middle of one end of the connecting crossbar (504). Limiting glue rods (507) are glued to the middle of both ends of the back of the limit plate (506).

7. A nacelle hoisting hole cover for a wind turbine according to claim 6, characterized in that, The end face of the connecting crossbar (504) is tightly fitted with the side face of the mounting crossbar (503), and the connecting bolt (505) penetrates the side face of the connecting crossbar (504), with the end of the connecting bolt (505) tightly fitted with the side face of the connecting crossbar (504).

8. A nacelle hoisting hole cover for a wind turbine according to claim 6, characterized in that, The side groove of the limiting plate (506) is longer than the length of the sealing slide cover (405) and the isolation and protection mesh plate (406), and the support plate (502) is aligned with the bottom surface of the limiting plate (506).

9. A nacelle hoisting hole cover for a wind turbine according to claim 1, characterized in that, The top surface of the workbench (1) is provided with auxiliary side support mechanisms (6) at both ends of the upper rectangular lifting hole (2); The auxiliary side support mechanism (6) includes a connecting side rod (601), a snap-fit ​​circular hole (602), a snap-fit ​​narrow plate (603), a snap-fit ​​cylinder (604), and a guide inclined plate (605). The top surface of the workbench (1) is provided with connecting side rods (601) at both ends of the upper rectangular lifting hole (2). The top surface of the connecting side rod (601) is uniformly provided with snap-fit ​​round holes (602). The top of the connecting side rod (601) is provided with a snap-fit ​​narrow plate (603). The bottom surface of the snap-fit ​​narrow plate (603) is fixedly connected with a snap-fit ​​cylinder (604) at the position inside the snap-fit ​​round hole (602). The side of the snap-fit ​​narrow plate (603) is fixedly connected with a guide inclined plate (605).

10. A nacelle hoisting hole cover for a wind turbine according to claim 9, characterized in that, The bottom surface of the snap-fit ​​narrow plate (603) is tightly fitted with the top surface of the connecting side rod (601), the outer side of the snap-fit ​​cylinder (604) is tightly fitted with the inner wall of the snap-fit ​​round hole (602), and the top surface of the guide inclined plate (605) is uniformly provided with anti-slip strips.

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