Protective device of wind power cabin cover

Abstract

The invention provides a protection device of a wind power cabin cover, and relates to the field of protection devices, the protection device comprises a cabin cover body, and the upper end of the cabin cover body is connected with an adjustable displacement protection mechanism; the adjustable displacement protection mechanism comprises a protection supporting shell, a displacement type conveying belt sealing mechanism, a heat dissipation mechanism and a winding displacement type conveying belt distance adjusting mechanism. A heat dissipation opening is formed in the protective supporting shell; the displacement type conveying belt sealing mechanism is arranged in the protection supporting shell, the heat dissipation mechanism is arranged in the middle of the displacement type conveying belt sealing mechanism, the winding displacement type conveying belt distance adjusting mechanism is connected with the heat dissipation mechanism, and the displacement type conveying belt sealing mechanism and the displacement type conveying belt sealing mechanism seal a heat dissipation opening and achieve the sealing protection effect when the heat dissipation position is adjusted. The winding displacement type conveying belt distance adjusting mechanism adjusts the size of a sealed heat dissipation opening of the displacement type conveying belt sealing mechanism, and the heat dissipation mechanism is arranged on the displacement type conveying belt sealing mechanism and moves along with the displacement type conveying belt sealing mechanism to adjust the heat dissipation position.

Description

Technical Field

[0001] The invention relates to the technical field of protective devices, and in particular to a protective device for a wind turbine nacelle cover. Background Art

[0002] The wind turbine nacelle is an external cover used to protect the internal components of the wind turbine. It is located on the top of the wind turbine. Some power generation equipment will be installed in the nacelle of the wind turbine, and these equipment will operate continuously. Therefore, the nacelle will generate heat as these power equipment operate. The heat generated by the power equipment will affect its working performance, and the continuous heat that cannot be released will also bring safety hazards. In order to solve the above problems, the publication (announcement) number: CN117365882B, the application number: CN202311544581.0, discloses a wind turbine nacelle cover heat dissipation device, including a nacelle cover body, an installation bin is provided inside the nacelle cover body, a heat dissipation port is provided on the inner wall at the top of the installation bin and through the bottom of the nacelle cover body, a heat dissipation mechanism for ventilation of the installation bin is provided on the inner wall at the top of the installation bin and located at the heat dissipation port, the heat dissipation mechanism includes a control frame for fixing, an exhaust assembly is provided at the bottom of the control frame, an air guide assembly is provided at the top of the exhaust assembly and slidably connected to the heat dissipation port, and a shielding assembly is provided in the heat dissipation port and symmetrically connected to the front and back of the air guide assembly. The present invention utilizes the cooperation of the heat dissipation mechanism and the heat dissipation port to dissipate the heat of the nacelle cover body, and then utilizes the shielding assembly to cooperate with the exhaust assembly and the air guide assembly to implement shielding of the heat dissipation port, and realizes shielding protection of the heat dissipation port while ensuring heat dissipation, so that the interior of the nacelle cover body can be protected.

[0003] The above patent uses that when the sliding connection block moves, the folding cloth on the corresponding side will be folded or extended to cover the heat dissipation port. However, after the folding cloth is folded, the gap between it and the heat dissipation port will become larger, and the ideal protection effect cannot be achieved. In addition, the size of the heat dissipation port is fixed and cannot be adjusted according to actual conditions, so the adaptability is not high. In view of the above problems, we propose a protective device for a wind turbine nacelle cover. Summary of the invention

[0004] In view of the problems that the heat dissipation openings in the prior art have poor protection effects and the size of the heat dissipation openings cannot be effectively adjusted, the present invention proposes a protective device for a wind turbine nacelle cover.

[0005] The present invention provides a wind turbine nacelle cover protection device, comprising a nacelle cover body, wherein an adjustable displacement protection mechanism is connected to the upper end of the nacelle cover body; The adjustable displacement protection mechanism includes a protection support shell, a displacement conveyor belt closing mechanism, a heat dissipation mechanism, a winding displacement conveyor belt spacing adjustment mechanism, and a blocking mechanism; The protective support shell is integrally formed and connected to the upper end of the nacelle cover body, a storage bin is provided inside the protective support shell, and the storage bin is connected to the inside of the nacelle cover body, and a heat dissipation port connected to the storage bin is provided at the upper end of the protective support shell; The displacement conveyor belt closing mechanism is arranged in the protective support shell, the heat dissipation mechanism is arranged in the middle of the displacement conveyor belt closing mechanism, one end of the winding displacement conveyor belt spacing adjustment mechanism is connected to the heat dissipation mechanism, and the other end is connected to the displacement conveyor belt closing mechanism; The blocking mechanism cover is arranged on the upper end of the heat dissipation opening.

[0006] According to a further improvement of the present invention, the displacement conveyor belt closing mechanism comprises a displacement conveying mechanism, a supporting side plate, a guiding mechanism, and a protective belt mechanism; The displacement conveying mechanism is arranged in the placement bin and connected to the protective support shell. The supporting side plate is threadedly connected to the displacement conveying mechanism and is slidably connected to the protective support shell. The guiding mechanism is arranged in the placement bin and is connected to the protective support shell. The lower end of the protective belt mechanism is arranged in the placement bin and the upper end is arranged in the heat dissipation port. The protective belt mechanism fits around the guiding mechanism, and the two ends of the protective belt mechanism are slidably connected to the supporting side plates through the sliding mechanism. A further improvement of the present invention is that the displacement conveying mechanism comprises a driving motor, a threaded rod, and a pulley mechanism, wherein the driving motor is fixedly connected to the protective support shell, and the threaded rod is provided with two groups, wherein one of the threaded rods is fixedly connected to the output end of the driving motor, and the other threaded rod is rotatably connected to the protective support shell through a bearing seat, and the two groups of threaded rods are connected through a pulley mechanism, and the threaded rods are threadedly connected to the supporting side plates; The pulley mechanism comprises a pulley and an annular belt. Two pulleys are provided, which are coaxially fixedly sleeved on two threaded rods respectively, and the two pulleys are connected by an annular belt. According to a further improvement of the present invention, the guide mechanism is provided with four groups, and the four groups of the guide mechanism are symmetrically distributed in the X direction and the Y direction. The guide mechanism includes a rotating rod and a conveying roller. Both ends of the rotating rod are connected to the protective support shell. The conveying roller is correspondingly arranged at the lower end of the heat dissipation port and is coaxially sleeved on the surface of the rotating rod. A further improvement of the present invention is that the protection belt mechanism comprises a protection belt, a winding roller, and a connecting shaft. The two ends of the protection belt are closely connected to the conveying roller and are arranged at the heat dissipation port. The winding roller is provided with two groups, which are respectively fixedly connected to the two ends of the protection belt, and the connecting shaft is fixedly connected to the side end of the winding roller. A further improvement of the present invention is that a movable cavity is provided on the end surface of the supporting side plate close to the protective belt, and the sliding mechanism includes a guide rail and a slider. The guide rail is provided in the movable cavity and is fixedly connected to the supporting side plate. The slider is provided in the movable cavity and is slidably connected to the guide rail. The slider is rotatably connected to the connecting shaft, and the slider is provided with a perforated groove for the threaded rod to pass through.

[0007] A further improved solution of the present invention, the heat dissipation mechanism comprises a support plate, a support block, and a fan heat dissipation fan, the support plate is arranged between the two ends of the protective belt, the support block is connected to the side end of the support plate, and is arranged in the movable cavity, and is slidably connected with the guide rail, the support block is provided with a cylindrical hole for the threaded rod to pass through, the support plate is provided with a through hole groove, and the fan heat dissipation fan is arranged in the through hole groove; A further improvement scheme of the present invention is that the winding displacement conveyor belt spacing adjustment mechanism includes a double-headed electric telescopic rod, a U-shaped frame, a gear, and a rack. The double-headed electric telescopic rod is fixedly connected to the support plate, the U-shaped frame is fixedly connected to the end of the double-headed electric telescopic rod and is rotatably connected to the connecting shaft, the gear is coaxially fixedly sleeved on the connecting shaft, the rack is meshed with the gear and is fixedly connected to the support side plate through a bracket, one group of the racks on both sides of the support plate is correspondingly arranged above the gear, and the other group is arranged below the corresponding gear.

[0008] A further improvement scheme of the present invention, the blocking mechanism includes a blocking support plate, a blocking plate, an ear plate, and an electric telescopic rod, the blocking support plate is arranged above the protective support shell, the blocking plate is integrally connected to the bottom of the blocking support plate and is used to be embedded in the heat dissipation port, the ear plate is integrally connected to the side end of the blocking support plate, the electric telescopic rod is fixedly connected to the top of the protective support shell, and its output end is fixedly connected to the ear plate.

[0009] According to a further improvement of the present invention, a movable groove is provided on the protective support shell, and the two groups of racks at the upper end are arranged in the movable groove.

[0010] Beneficial effects of the present invention: The present invention provides a protective device for a wind turbine nacelle cover: 1. The heat dissipation port is closed by means of a displacement conveyor belt closing mechanism, and when the heat dissipation position is adjusted, a good sealing and protection effect can still be achieved; Second, the size of the closed heat dissipation opening of the displacement conveyor belt closing mechanism is adjusted by the winding displacement conveyor belt spacing adjustment mechanism, thereby adjusting the heat dissipation amount; 3. The heat generated by the components inside the nacelle cover body is dissipated through the heat dissipation mechanism to achieve a good heat dissipation effect; Fourth, the heat dissipation mechanism is arranged on the displacement conveyor belt closing mechanism, and moves along with the displacement conveyor belt closing mechanism to adjust the heat dissipation position. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The present invention provides a structure of a protective device for a wind turbine cabin cover Figure 1 .

[0012] Figure 2 The present invention provides a structure of a protective device for a wind turbine cabin cover Figure 2 .

[0013] Figure 3 The present invention is a structural diagram of an adjustable displacement protection mechanism of a protection device for a wind turbine nacelle cover.

[0014] Figure 4 The present invention is a structural diagram of a displacement conveyor belt closing mechanism of a protective device for a wind turbine nacelle cover.

[0015] Figure 5 This is a position diagram of a displacement conveying mechanism, a protection belt mechanism, and a supporting side plate of a protective device for a wind turbine nacelle cover of the present invention.

[0016] Figure 6 The present invention is a structural diagram of a heat dissipation mechanism of a protective device for a wind turbine nacelle cover.

[0017] Figure 7 A protective device for a wind turbine nacelle cover of the present invention Figure 5 Enlarged view of point A in the middle.

[0018] Figure 8 The present invention is a structural diagram of a blocking mechanism of a protective device for a wind turbine nacelle cover.

[0019] Fig. 9 This is a position diagram of a moving groove of a protective device of a wind turbine nacelle cover of the present invention on a protective support shell.

[0020] In the attached drawings: 1. Nacelle cover body; 2. Adjustable displacement protection mechanism; 3. Protection support shell; 4. Displacement conveyor belt closing mechanism; 5. Heat dissipation mechanism; 6. Winding displacement conveyor belt spacing adjustment mechanism; 7. Blocking mechanism; 8. Heat dissipation port; 9. Displacement conveying mechanism; 10. Support side plate; 11. Guide mechanism; 12. Protection belt mechanism; 13. Sliding mechanism; 14. Driving motor; 15. Threaded rod; 16. Pulley mechanism; 1 7. Rotating rod; 18. Conveying roller; 19. Protective belt; 20. Winding roller; 21. Coupling shaft; 22. Moving cavity; 23. Sliding block; 24. Support plate; 25. Support block; 26. Fan cooling fan; 27. Columnar hole; 28. Double-headed electric telescopic rod; 29. ​​U-shaped frame; 30. Gear; 31. Rack; 32. Bracket; 33. Sealing support plate; 34. Sealing plate; 35. Ear plate; 36. Electric telescopic rod; 37. Moving slot. DETAILED DESCRIPTION

[0021] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; similarly, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0022] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] according to Figure 1-Figure 9 A protective device for a wind turbine nacelle cover is shown, comprising a nacelle cover body 1, an adjustable displacement protection mechanism 2 is connected to the upper end of the nacelle cover body 1, the adjustable displacement protection mechanism 2 comprises a protection support shell 3, the protection support shell 3 is integrally formed and connected to the upper end of the nacelle cover body 1, a placement bin is provided inside the protection support shell 3, and the placement bin is connected to the inside of the nacelle cover body 1, and a heat dissipation port 8 is provided on the upper end of the protection support shell 3 and is communicated with the placement bin, and heat is dissipated through the heat dissipation port 8; The adjustable displacement protection mechanism 2 includes a displacement conveyor belt closing mechanism 4, which is arranged in the protection support shell 3. The displacement conveyor belt closing mechanism 4 includes a displacement conveying mechanism 9, a supporting side plate 10, a guide mechanism 11, and a protection belt mechanism 12. The displacement conveying mechanism 9 is arranged in the placement bin and connected to the protection support shell 3. The displacement conveying mechanism 9 includes a driving motor 14, a threaded rod 15, and a pulley mechanism 16. The driving motor 14 is fixedly connected to the protection support shell 3. The threaded rod 15 is provided with two groups, one of which is fixedly connected to the output end of the driving motor 14, and the other threaded rod 15 is connected to the output end of the driving motor 14 through the shaft. The bearing seat is rotatably connected to the protective support shell 3, and the two sets of threaded rods 15 are connected by a pulley mechanism 16. The pulley mechanism 16 includes a pulley and an annular belt. There are two pulleys, which are coaxially fixed on the two threaded rods 15 respectively. The two pulleys are connected by an annular belt. The threaded rod 15 is threadedly connected to the support side plate 10. The driving motor 14 is started to drive the threaded rod 15 to rotate, thereby driving the support side plate 10 threadedly connected to the threaded rod 15 to move. The support side plate 10 is threadedly connected to the displacement conveying mechanism 9 and is slidably connected to the protective support shell 3. The guide mechanism 11 is arranged in the placement bin and is connected to the protective support shell 3. The guide mechanism 11 The mechanism 11 is provided with four groups, and the four groups of guide mechanisms 11 are symmetrically distributed in the X direction and the Y direction. The guide mechanism 11 includes a rotating rod 17 and a conveying roller 18. The two ends of the rotating rod 17 are connected to the protective support shell 3. The conveying roller 18 is correspondingly arranged at the lower end of the heat dissipation port 8, and is coaxially sleeved on the surface of the rotating rod 17 to guide the protective belt mechanism 12. The lower end of the protective belt mechanism 12 is arranged in the placement bin, and the upper end is arranged in the heat dissipation port 8. The protective belt mechanism 12 fits around the guide mechanism 11. The two ends of the protective belt mechanism 12 are slidably connected to the supporting side plate 10 through the sliding mechanism 13. The protective belt mechanism 12 includes a protective belt 19, a winding roller 20, and a connecting shaft 21. The two ends of the protective belt 19 are fitted and wrapped around the conveying roller 18 and are arranged at the heat dissipation port 8. The heat dissipation port 8 is closed by the protective belt 19. There are two groups of winding rollers 20, which are respectively fixedly connected to the two ends of the protective belt 19. The connecting shaft 21 is fixedly connected to the side ends of the winding roller 20. A movable cavity 22 is provided on the end surface of the supporting side plate 10 close to the protective belt 19. The sliding mechanism 13 includes a guide rail and a slider 23. The guide rail is provided in the movable cavity 22 and is fixedly connected to the supporting side plate 10. The slider 23 is provided in the movable cavity 22 and is slidably connected to the guide rail. The slider 23 is rotatably connected to the connecting shaft 21, and the slider 23 is provided with a perforated groove for the threaded rod 15 to pass through.

[0025] The adjustable displacement protection mechanism 2 includes a heat dissipation mechanism 5, which is arranged in the middle of the displacement conveyor belt closing mechanism 4. The heat dissipation mechanism 5 includes a support plate 24, a support block 25, and a fan heat dissipation fan 26. The support plate 24 is arranged between the two ends of the protection belt 19. The support block 25 is connected to the side end of the support plate 24 and is arranged in the moving cavity 22 and is slidably connected with the guide rail. The support block 25 is provided with a cylindrical hole 27 for the threaded rod 15 to pass through. The support plate 24 is provided with a through hole groove. The fan heat dissipation fan 26 is arranged in the through hole groove, and heat is dissipated by the fan heat dissipation fan 26. The adjustable displacement protection mechanism 2 includes a winding displacement conveyor belt spacing adjustment mechanism 6, one end of the winding displacement conveyor belt spacing adjustment mechanism 6 is connected to the heat dissipation mechanism 5, and the other end is connected to the displacement conveyor belt closing mechanism 4; the winding displacement conveyor belt spacing adjustment mechanism 6 includes a double-headed electric telescopic rod 28, a U-shaped frame 29, a gear 30, and a rack 31. The double-headed electric telescopic rod 28 is fixedly connected to the support plate 24, the U-shaped frame 29 is fixedly connected to the end of the double-headed electric telescopic rod 28, and is rotatably connected to the connecting shaft 21, the gear 30 is coaxially fixedly sleeved on the connecting shaft 21, the rack 31 is meshed with the gear 30, and is fixedly connected to the support side plate 10 through the bracket 32, one group of the racks 31 on both sides of the support plate 24 is correspondingly arranged above the gear 30, and the other group is arranged at the corresponding gear 30 Under the , the double-headed electric telescopic rod 28 is started, driving the U-shaped frame 29 to move, driving the connecting shaft 21 to move, and driving the gear 30 to move. With the assistance of the rack 31, the gear 30 moves and rotates at the same time, driving the connecting shaft 21 and the winding roller 20 to rotate. Since the racks 31 at the left and right ends of the support plate 24 are distributed up and down, the rotation directions of the two winding rollers 20 are opposite. Therefore, one winding roller 20 moves to reel in the protective belt 19, and the other winding roller 20 moves to loosen the protective belt 19. The moving directions of the two winding rollers 20 are opposite. Therefore, the shielding of the heat dissipation port 8 by the protective belt 19 can be adjusted, thereby adjusting the size of the heat dissipation port 8. A movable groove 37 is provided on the protective support shell 3, and the two sets of racks 31 at the upper end are arranged in the movable groove 37 to give the rack 31 enough space.

[0026] The adjustable displacement protection mechanism 2 includes a blocking mechanism 7, which is covered at the upper end of the heat dissipation port 8. The blocking mechanism 7 includes a blocking support plate 33, a blocking plate 34, an ear plate 35, and an electric telescopic rod 36. The blocking support plate 33 is arranged above the protection support shell 3, and the blocking plate 34 is integrally formed and connected to the bottom of the blocking support plate 33 for being embedded in the heat dissipation port 8. The ear plate 35 is integrally formed and connected to the side end of the blocking support plate 33. The electric telescopic rod 36 is fixedly connected to the top of the protection support shell 3, and its output end is fixedly connected to the ear plate 35. When the electric telescopic rod 36 is started, it drives the ear plate 35, the blocking support plate 33, and the blocking plate 34 to move upward, and the blocking plate 34 does not block the heat dissipation port 8.

[0027] Principle of the present invention: When in use, the electric telescopic rod 36 is started, driving the ear plate 35, the blocking support plate 33, and the blocking plate 34 to move upward, the blocking plate 34 does not block the heat dissipation port 8, and the fan cooling fan 26 is started to dissipate heat in the nacelle cover body 1; When the position needs to be adjusted, the driving motor 14 is started, driving the threaded rod 15 to rotate, and driving another threaded rod 15 to rotate through the pulley mechanism 16. The rotation of the two threaded rods 15 drives the movement of the two supporting side plates 10, and then drives the movement of the support block 25 and the support plate 24, and then drives the movement of the double-headed electric telescopic rod 28, and then drives the movement of the U-shaped frame 29, the connecting shaft 21, and the protection belt 19. The guide mechanism 11 guides and transports the protection belt 19, so that the two ends of the protection belt 19 can be displaced and the distance can remain unchanged. The rest of the heat dissipation port 8 is blocked by the protection belt 19, which can ensure the heat dissipation effect of each position and the sealing of the heat dissipation port 8 during heat dissipation. When the size of the heat dissipation port 8 needs to be adjusted, the double-headed electric telescopic rod 28 is started, driving the U-shaped frame 29 to move, driving the connecting shaft 21 to move, and driving the gear 30 to move. With the assistance of the rack 31, the gear 30 moves and rotates at the same time, driving the connecting shaft 21 and the winding roller 20 to rotate. Since the racks 31 at the left and right ends of the support plate 24 are distributed up and down, the rotation directions of the two winding rollers 20 are opposite. Therefore, one winding roller 20 moves to reel in the protective belt 19, and the other winding roller 20 moves to loosen the protective belt 19. The moving directions of the two winding rollers 20 are opposite. Therefore, the shielding of the heat dissipation port 8 by the protective belt 19 can be adjusted, thereby adjusting the size of the heat dissipation port 8.

[0028] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the authorization requirements.

Claims

1. A protective device for a wind turbine nacelle cover, comprising a nacelle cover body (1), characterized in that: The upper end of the nacelle cover body (1) is connected to an adjustable displacement protection mechanism (2); The adjustable displacement protection mechanism (2) comprises a protection support shell (3), a displacement conveyor belt closing mechanism (4), a heat dissipation mechanism (5), a winding displacement conveyor belt spacing adjustment mechanism (6), and a blocking mechanism (7); The protective support shell (3) is integrally formed and connected to the upper end of the nacelle cover body (1); a storage bin is provided inside the protective support shell (3), and the storage bin is communicated with the interior of the nacelle cover body (1); and a heat dissipation port (8) is provided at the upper end of the protective support shell (3); The displacement conveyor belt closing mechanism (4) is arranged in the protective support shell (3), the heat dissipation mechanism (5) is arranged in the middle of the displacement conveyor belt closing mechanism (4), and one end of the winding displacement conveyor belt spacing adjustment mechanism (6) is connected to the heat dissipation mechanism (5) and the other end is connected to the displacement conveyor belt closing mechanism (4); The blocking mechanism (7) is covered on the upper end of the heat dissipation opening (8).

2. A wind turbine nacelle protection device according to claim 1, characterized in that: The displacement conveyor belt closing mechanism (4) comprises a displacement conveying mechanism (9), a supporting side plate (10), a guiding mechanism (11), and a protective belt mechanism (12); The displacement conveying mechanism (9) is arranged in the placement bin and connected to the protective support shell (3); the supporting side plate (10) is threadedly connected to the displacement conveying mechanism (9) and is slidably connected to the protective support shell (3); the guiding mechanism (11) is arranged in the placement bin and is connected to the protective support shell (3); the lower end of the protective belt mechanism (12) is arranged in the placement bin and the upper end is arranged in the heat dissipation port (8); the protective belt mechanism (12) fits around the guiding mechanism (11), and the two ends of the protective belt mechanism (12) are slidably connected to the supporting side plate (10) via a sliding mechanism (13).

3. A protective device for a wind turbine nacelle cover according to claim 2, characterized in that: The displacement conveying mechanism (9) comprises a driving motor (14), a threaded rod (15), and a pulley mechanism (16); the driving motor (14) is fixedly connected to the protective support shell (3); the threaded rod (15) is provided in two groups, one of the threaded rods (15) is fixedly connected to the output end of the driving motor (14), and the other threaded rod (15) is rotatably connected to the protective support shell (3) via a bearing seat; the two groups of threaded rods (15) are connected via a pulley mechanism (16); The pulley mechanism (16) comprises a pulley and an annular belt. Two pulleys are provided and are coaxially fixedly sleeved on two threaded rods (15) respectively. The two pulleys are connected via an annular belt.

4. A protective device for a wind turbine nacelle cover according to claim 3, characterized in that: The guide mechanism (11) is provided with four groups, and the four groups of the guide mechanism (11) are symmetrically distributed in the X direction and the Y direction. The guide mechanism (11) comprises a rotating rod (17) and a conveying roller (18). Both ends of the rotating rod (17) are connected to the protective support shell (3). The conveying roller (18) is correspondingly arranged at the lower end of the heat dissipation port (8) and is coaxially sleeved on the surface of the rotating rod (17).

5. A protective device for a wind turbine nacelle cover according to claim 4, characterized in that: The protective belt mechanism (12) comprises a protective belt (19), a winding roller (20), and a connecting shaft (21). The two ends of the protective belt (19) are closely attached to and wound around a conveying roller (18) and are arranged at a heat dissipation port (8). The winding roller (20) is provided with two groups, which are respectively fixedly connected to the two end ends of the protective belt (19). The connecting shaft (21) is fixedly connected to the side end of the winding roller (20).

6. A protective device for a wind turbine nacelle cover according to claim 5, characterized in that: A movable cavity (22) is provided on the end surface of the supporting side plate (10) close to the protective belt (19); the sliding mechanism (13) comprises a guide rail and a slider (23); the guide rail is provided in the movable cavity (22) and is fixedly connected to the supporting side plate (10); the slider (23) is provided in the movable cavity (22) and is slidably connected to the guide rail; the slider (23) is rotatably connected to the connecting shaft (21).

7. A wind turbine nacelle protection device according to claim 6, characterized in that: The heat dissipation mechanism (5) comprises a support plate (24), a support block (25), and a fan heat dissipation fan (26); the support plate (24) is arranged between the two ends of the protective belt (19); the support block (25) is connected to the side end of the support plate (24), is arranged in the movable cavity (22), and is slidably connected to the guide rail; the support block (25) is provided with a cylindrical hole (27) for the threaded rod (15) to pass through; the support plate (24) is provided with a through hole groove, and the fan heat dissipation fan (26) is arranged in the through hole groove.

8. The protective device for a wind turbine nacelle cover according to claim 7, characterized in that: The winding displacement conveyor belt spacing adjustment mechanism (6) comprises a double-headed electric telescopic rod (28), a U-shaped frame (29), a gear (30), and a rack (31); the double-headed electric telescopic rod (28) is fixedly connected to the support plate (24); the U-shaped frame (29) is fixedly connected to the end of the double-headed electric telescopic rod (28) and is rotatably connected to the connecting shaft (21); the gear (30) is coaxially fixedly sleeved on the connecting shaft (21); the rack (31) is meshed with the gear (30) and is fixedly connected to the supporting side plate (10) through a bracket (32); one group of the racks (31) on both sides of the support plate (24) is correspondingly arranged above the gear (30), and the other group is arranged below the corresponding gear (30).

9. A protective device for a wind turbine nacelle cover according to claim 8, characterized in that: The blocking mechanism (7) comprises a blocking support plate (33), a blocking plate (34), an ear plate (35), and an electric telescopic rod (36); the blocking support plate (33) is arranged above the protective support shell (3); the blocking plate (34) is integrally formed and connected to the bottom of the blocking support plate (33) and is used to be embedded in the heat dissipation port (8); the ear plate (35) is integrally formed and connected to the side end of the blocking support plate (33); the electric telescopic rod (36) is fixedly connected to the top of the protective support shell (3), and its output end is fixedly connected to the ear plate (35).

10. A protective device for a wind turbine nacelle cover according to claim 9, characterized in that: The protective support shell (3) is provided with a movable groove (37), and the two groups of racks (31) at the upper end are arranged in the movable groove (37).

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