Angle fixing device for cabin cover

Abstract

The invention belongs to the technical field of wind power generation, and particularly relates to a cabin cover angle fixing device which comprises supporting legs, a square frame is arranged on the supporting legs, a translation mechanism is arranged on the square frame, an angle adjusting mechanism is arranged on the translation mechanism, and an inner cabin top suction cup mechanism is arranged on the angle adjusting mechanism. The translation mechanism comprises a longitudinal translation assembly and a transverse translation assembly, the longitudinal translation assembly is arranged on the square frame, and the transverse translation assembly is arranged on the longitudinal translation assembly; through arrangement of the translation mechanism, rotation of the first motor and the second motor and transmission of the first lead screw and the second lead screw, the lifting air cylinder and the angle adjusting mechanism can flexibly move front and back and left and right, and the position of the cabin upper cover can be conveniently adjusted; through the synergistic effect of the third air cylinder, the fourth air cylinder, the first air cylinder and the second air cylinder, the angle adjusting plate can incline, and therefore the inclination angle of the cabin upper cover is adjusted.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power generation, and in particular relates to a device for fixing the angle of a nacelle cover. Background Art

[0002] The wind turbine nacelle is an important part of wind power generation equipment. It mainly covers the nacelle of the wind turbine and plays a role in protecting the internal components of the nacelle and isolating the external environment. Wind turbines are usually installed on towers tens of meters or even hundreds of meters high to ensure that the wind rotor can capture more wind energy. During the installation process, the nacelle cover is divided into two parts: the nacelle upper cover and the nacelle lower cover for assembly.

[0003] When installing the nacelle of a wind turbine on a high-altitude tower, a key step is to fix the angles of the upper and lower nacelle covers. This step is crucial to ensure the stability and operating efficiency of the entire wind turbine. However, existing technologies mainly rely on ground cranes to lift the upper nacelle cover to high altitudes, and then manually calibrate and adjust the angles. This method is not only inefficient, but also poses safety hazards. Due to the complex high-altitude working environment, manual calibration often fails to achieve precise angle requirements, which not only affects the installation quality of the wind turbine, but may also have an adverse effect on its subsequent operating performance. Summary of the invention

[0004] In order to solve the above-mentioned problem, the present invention proposes a device for fixing the angle of a nacelle cover.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a device for fixing the angle of a cabin cover, comprising a supporting leg, a square frame is provided on the supporting leg, a translation mechanism is provided on the square frame, an angle adjustment mechanism is provided on the translation mechanism, and an inner cabin top suction cup mechanism is provided on the angle adjustment mechanism; the translation mechanism comprises a longitudinal translation component and a transverse translation component, the longitudinal translation component is arranged on the square frame, and the transverse translation component is arranged on the longitudinal translation component.

[0006] Further, the longitudinal translation assembly includes a first motor, which is arranged on one side of the inner wall of the square frame, and the output end of the first motor is provided with one end of a driving tube, and the other end of the driving tube is rotatably arranged on the other inner wall of the square frame, and a bevel gear 1 is sleeved on the driving tube, a sliding rod is provided on the outer wall of the square frame, and a first lead screw is rotatably arranged on the outer wall of the square frame, and a bevel gear 2 is provided at one end of the first lead screw, and the bevel gear 1 and the bevel gear 2 are meshed and rotatably connected, a first moving block is slidably sleeved on the sliding rod, and a first moving block is sleeved on the first lead screw, and the first lead screw and the first moving block are threadedly connected.

[0007] Furthermore, the lateral translation assembly includes a lifting cylinder, which is arranged on a first moving block, a lifting plate is provided at the output end of the lifting cylinder, a first elongated groove is provided in the lifting plate, a sliding groove is provided in the first elongated groove, a first slider is slidably provided in the sliding groove, a supporting rod is provided at the upper end of the first slider, a second moving block is provided at the upper end of the supporting rod, a sleeve is provided at the lower end of the second moving block, a second motor is provided at one external end of the lifting plate, a second lead screw is provided at the output end of the second motor, the other end of the second lead screw is rotatably provided on the inner side wall of the first elongated groove, the sleeve is sleeved on the second lead screw, and the second lead screw and the sleeve are threadedly connected.

[0008] Furthermore, the angle adjustment mechanism includes a first tilting component and a third tilting component, the third tilting component is arranged on the second moving block, and the first tilting component is arranged on the third tilting component.

[0009] Furthermore, the third tilting assembly includes a second fixed column, which is arranged on the second movable block, the upper end of the second fixed column is hinged to the angle adjustment plate, one side of the upper end of the second movable block is hinged to the cylinder seat of the third cylinder, the output end of the third cylinder is hinged to one side of the lower end of the angle adjustment plate, the other side of the upper end of the second movable block is hinged to the cylinder seat of the fourth cylinder, and the output end of the fourth cylinder is hinged to the other side of the lower end of the angle adjustment plate.

[0010] Further, the first tilting assembly includes a first fixed column, which is arranged on an angle adjustment plate, the upper end of the first fixed column intersects the supporting cavity, one side of the upper end of the angle adjustment plate is hinged to the cylinder seat of the first cylinder, the output end of the first cylinder is hinged to one side of the lower end of the supporting cavity, the other side of the upper end of the angle adjustment plate is hinged to the cylinder seat of the second cylinder, and the output end of the second cylinder is hinged to the other side of the lower end of the supporting cavity.

[0011] Furthermore, the inner cabin top suction cup mechanism includes an adsorption component and a fixing component, the adsorption component is arranged in the supporting cavity, and the fixing component is arranged in the supporting cavity.

[0012] Furthermore, the adsorption component includes a magnetorheological fluid cavity, which is arranged at the internal top end of the support cavity, and a spring is provided at the internal bottom end of the magnetorheological fluid cavity. A second slider is provided at the upper end of the spring, and the second slider is slidably arranged in the magnetorheological fluid cavity. A solution flow hole is provided on the second slider, and a buffer rod is provided at the upper end of the second slider, and an electric suction cup is provided at the upper end of the buffer rod.

[0013] Furthermore, the fixed component includes a controller, which is arranged at the inner bottom end of the supporting cavity. An electromagnetic coil is wound on the outer wall of the magnetorheological fluid cavity, and the electromagnetic coil is connected to the controller. The controller is externally connected to a power supply, and magnetorheological fluid is arranged in the magnetorheological fluid cavity.

[0014] Furthermore, a sealing ring is provided at the upper end of the supporting cavity, and the sealing ring is slidably sleeved on the buffer rod.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The setting of the suction cup mechanism on the top of the inner cabin achieves efficient and stable adsorption of the cabin cover through the combined use of electric suction cups and magnetorheological fluid, ensuring stability and safety during the installation process.

[0016] (2) The setting of the suction cup mechanism on the inner cabin top can effectively cope with the unevenness of the inner top surface of the cabin upper cover, thereby improving the versatility and adaptability of the device.

[0017] (3) The setting of the translation mechanism, the rotation of the first motor and the second motor, and the transmission of the first screw and the second screw enable the lifting cylinder and the angle adjustment mechanism to move flexibly forward and backward and left and right, thereby facilitating the adjustment of the position of the cabin upper cover.

[0018] (4) The setting of the angle adjustment mechanism. The coordinated action of the third cylinder, the fourth cylinder, the first cylinder and the second cylinder enables the angle adjustment plate to be tilted, thereby adjusting the tilt angle of the cabin upper cover to meet complex installation requirements.

[0019] (5) The setting of the downward pressure patch mechanism reduces the need for manual intervention, thereby speeding up production. At the same time, since the conductive paste can reach the designated position accurately and quickly, it also helps to shorten the overall processing time.

[0020] (6) The present application is reasonably designed and easy to operate, and can significantly improve the angular positioning efficiency and accuracy of the wind turbine nacelle during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 This is a front view of a device for fixing the angle of a nacelle cover according to the present invention; Figure 2 This is a front cross-sectional view of a device for fixing the angle of a nacelle cover according to the present invention; Figure 3 This is a right view of a device for fixing the angle of a nacelle cover according to the present invention; Figure 4 This is a right side cross-sectional view of a device for fixing the angle of a nacelle cover according to the present invention; Figure 5 It is a schematic diagram of the structure of the longitudinal translation component; Figure 6 A schematic diagram of the internal structure of the supporting cavity; Figure 7 for Figure 6 A partial enlarged view of part A; Figure 8 for Figure 4 A partial enlarged view of part B; Fig. 9 for Figure 2 A partial enlarged view of part C in the middle; Fig.10 for Figure 5 A partial enlarged view of part D in the middle.

[0023] Among them, 1. square frame, 2. translation mechanism, 3. angle adjustment mechanism, 4. inner cabin top suction cup mechanism, 6. support leg, 7. longitudinal translation assembly, 8. lateral translation assembly, 9. first motor, 10. drive tube, 11. bevel gear 1, 12. bevel gear 2, 13. first lead screw, 14. slide bar, 15. first moving block, 16. lifting cylinder, 17. lifting plate, 18. first long groove, 19. slide groove, 20. second motor, 21. second lead screw, 22. sleeve, 23. first slider, 24. second moving block , 25. The first tilting component, 27. The third tilting component, 28. The first fixed column, 29. The first cylinder, 30. The second cylinder, 31. The supporting cavity, 32. The third cylinder, 33. The fourth cylinder, 34. The second fixed column, 35. The angle adjustment plate, 36. The magnetorheological fluid cavity, 37. The second slider, 38. The spring, 39. The solution flow hole, 40. The electromagnetic coil, 41. The buffer rod, 42. The electric suction cup, 43. The controller, 44. The supporting rod, 45. The adsorption component, 46. The fixing component, 47. The sealing ring. DETAILED DESCRIPTION

[0024] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0025] like Figure 1-Figure 10As shown, the present invention proposes a device for fixing the angle of a cabin cover, comprising a supporting leg 6, a square frame 1 is provided on the supporting leg 6, a translation mechanism 2 is provided on the square frame 1, an angle adjustment mechanism 3 is provided on the translation mechanism 2, and an inner cabin top suction cup mechanism 4 is provided on the angle adjustment mechanism 3; the translation mechanism 2 comprises a longitudinal translation component 7 and a transverse translation component 8, the longitudinal translation component 7 is arranged on the square frame 1, and the transverse translation component 8 is arranged on the longitudinal translation component 7.

[0026] The longitudinal translation assembly 7 includes a first motor 9, a driving tube 10, a bevel gear 11, a bevel gear 2 12, a first lead screw 13, a slide rod 14 and a first moving block 15. The first motor 9 is arranged on one side of the inner wall of the frame 5, and the output end of the first motor 9 is provided with one end of the driving tube 10, and the other end of the driving tube 10 is rotatably arranged on the other inner wall of the square frame 1. The driving tube 10 is sleeved with a bevel gear 11, and a slide rod 14 is provided on the outer wall of the square frame 1. The outer wall of the square frame 1 is rotatably provided with a first lead screw 13, and one end of the first lead screw 13 is provided with a bevel gear 2 12. The bevel gear 11 and the bevel gear 2 12 are meshed and rotatably connected. The first moving block 15 is slidably sleeved on the slide rod 14, and the first moving block 15 is sleeved on the first lead screw 13. The first lead screw 13 and the first moving block 15 are threadedly connected.

[0027] The lateral translation assembly 8 includes a lifting cylinder 16, a lifting plate 17, a first elongated groove 18, a slide 19, a second motor 20, a second lead screw 21, a sleeve 22, a first slider 23, a second moving block 24 and a supporting rod 44. The lifting cylinder 16 is arranged on the first moving block 15. The lifting cylinder 16 is provided with a lifting plate 17 at the output end of the lifting cylinder 16. The lifting plate 17 is provided with a first elongated groove 18. The first elongated groove 18 is provided with a slide 19. The first slider 23 is slidably provided in the slide 19. The upper end of the first slider 23 is provided with a supporting rod 44. The upper end of the supporting rod 44 is provided with a second moving block 24. The lower end of the second moving block 24 is provided with a sleeve 22. The outer end of the lifting plate 17 is provided with a second motor 20. The output end of the second motor 20 is provided with a second lead screw 21. The other end of the second lead screw 21 is rotatably arranged on the inner side wall of the first elongated groove 18. The sleeve 22 is sleeved on the second lead screw 21. The second lead screw 21 and the sleeve 22 are threadedly connected.

[0028] The angle adjustment mechanism 3 includes a first tilting component 25 and a third tilting component 27 . The third tilting component 27 is disposed on the second moving block 24 , and the first tilting component 25 is disposed on the third tilting component 27 .

[0029] The third tilting assembly 27 includes a third cylinder 32, a fourth cylinder 33 and a second fixed column 34. The second fixed column 34 is arranged on the second moving block 24. The upper end of the second fixed column 34 is hinged to the angle adjustment plate 35. One side of the upper end of the second moving block 24 is hinged to the cylinder seat of the third cylinder 32. The output end of the third cylinder 32 is hinged to one side of the lower end of the angle adjustment plate 35. The other side of the upper end of the second moving block 24 is hinged to the cylinder seat of the fourth cylinder 33. The output end of the fourth cylinder 33 is hinged to the other side of the lower end of the angle adjustment plate 35.

[0030] The first tilting assembly 25 includes a first fixed column 28, a first cylinder 29, a second cylinder 30, a supporting cavity 31 and an angle adjustment plate 35. The first fixed column 28 is arranged on the angle adjustment plate 35. The upper end of the first fixed column 28 intersects the supporting cavity 31. One side of the upper end of the angle adjustment plate 35 is hinged to the cylinder seat of the first cylinder 29, and the output end of the first cylinder 29 is hinged to one side of the lower end of the supporting cavity 31. The other side of the upper end of the angle adjustment plate 35 is hinged to the cylinder seat of the second cylinder 30, and the output end of the second cylinder 30 is hinged to the other side of the lower end of the supporting cavity 31.

[0031] The inner cabin top suction cup mechanism 4 includes an adsorption component 45 and a fixing component 46 . The adsorption component 45 is arranged in the supporting cavity 31 , and the fixing component 46 is arranged in the supporting cavity 31 .

[0032] The adsorption assembly 45 includes a magnetorheological fluid cavity 36, a second slider 37, a spring 38, a solution flow hole 39, a buffer rod 41 and an electric suction cup 42. The magnetorheological fluid cavity 36 is arranged at the inner top of the support cavity 31, and a spring 38 is provided at the inner bottom of the magnetorheological fluid cavity 36. The upper end of the spring 38 is provided with a second slider 37. The second slider 37 is slidably arranged in the magnetorheological fluid cavity 36. The second slider 37 is provided with a solution flow hole 39. The upper end of the second slider 37 is provided with a buffer rod 41, and the upper end of the buffer rod 41 is provided with an electric suction cup 42.

[0033] The fixed component 46 includes an electromagnetic coil 40 and a controller 43. The controller 43 is arranged at the inner bottom end of the supporting cavity 31. The electromagnetic coil 40 is wound around the outer wall of the magnetorheological fluid cavity 36. The electromagnetic coil 40 is connected to the controller 43. The controller 43 is externally connected to a power supply. Magnetorheological fluid is arranged in the magnetorheological fluid cavity 36.

[0034] A sealing ring 47 is provided at the upper end of the supporting cavity 31 , and the sealing ring 47 is slidably sleeved on the buffer rod 41 .

[0035] During specific use, when installing the nacelle upper cover and nacelle lower cover of the wind turbine nacelle, install this device on the nacelle lower cover, use a ground crane to lift the nacelle upper cover, and slowly move it to the top of this device, the output end of the lifting cylinder 16 moves to drive the lifting plate 17 to move upward, the lifting plate 17 moves upward to drive the second moving block 24 to move upward, the second moving block 24 moves upward to drive the first fixed column 28 to move upward, the first fixed column 28 moves upward to drive the supporting cavity 31 to move upward, the supporting cavity 31 moves upward to drive the electric suction cup 42 to move upward until it contacts the inner top surface of the nacelle upper cover, a plurality of electric suction cups 42 are arranged on the supporting cavity 31 to deal with the uneven inner top surface of the nacelle upper cover, and the adsorption component 45 sucks the nacelle tightly Upper cover, at this time the spring 38 is compressed, the second slider 37 slides in the magnetorheological fluid cavity 36, the magnetorheological fluid flows through the solution flow hole 39, the electromagnetic coil 40 is energized, and the controller 43 adjusts the current flowing through the electromagnetic coil 40, which can accurately control the strength of the magnetic field, thereby adjusting the rheological properties of the magnetorheological fluid, so that the magnetorheological fluid changes from liquid to solid, and the upper cover of the cabin is adsorbed and fixed. Subsequently, the output end of the first motor 9 rotates to drive the drive tube 10 to rotate, the drive tube 10 rotates to drive the bevel gear 11 to rotate, the bevel gear 11 rotates to drive the bevel gear 2 12 to rotate, the bevel gear 2 12 rotates to drive the first lead screw 13 to rotate, the first lead screw 13 rotates to drive the first moving block 15 to move forward and backward, thereby driving the lifting cylinder 16 to move forward and backward, The lifting cylinder 16 moves forward and backward to drive the lifting plate 17 to move forward and backward, the lifting plate 17 moves forward and backward to drive the angle adjustment mechanism 3 to move forward and backward, the angle adjustment mechanism 3 moves forward and backward to drive the inner cabin top suction cup mechanism 4 to move forward and backward, the inner cabin top suction cup mechanism 4 moves and drives the cabin upper cover to move forward and backward, the output end of the second motor 20 rotates to drive the second lead screw 21 to rotate, the second lead screw 21 rotates to drive the sleeve 22 to move left and right, the sleeve 22 moves left and right to drive the second moving block 24 to move left and right, the second moving block 24 moves left and right to drive the angle adjustment mechanism 3 to move left and right, the angle adjustment mechanism 3 moves left and right to drive the inner cabin top suction cup mechanism 4 to move left and right, the inner cabin top suction cup mechanism 4 moves and drives the cabin upper cover to move left and right, while the output end of the third cylinder 32 moves upward, The output end of the fourth cylinder 33 moves downward, so that the angle adjustment plate 35 can be adjusted to tilt to the left, thereby adjusting the first tilting assembly 25 to the left, and then adjusting the inner cabin top suction cup mechanism 4 to the left, and finally driving the cabin upper cover to tilt to the left. While the output end of the third cylinder 32 moves downward, the output end of the fourth cylinder 33 moves upward, so that the cabin upper cover can be adjusted to tilt to the right. While the output end of the first cylinder 29 moves downward, the output end of the second cylinder 30 moves upward, so that the backward tilt angle of the inner cabin top suction cup mechanism 4 can be adjusted, thereby adjusting the backward tilt angle of the cabin upper cover. While the output end of the first cylinder 29 moves upward, the output end of the second cylinder 30 moves downward, so that the forward tilt angle of the inner cabin top suction cup mechanism 4 can be adjusted.Thereby adjusting the forward tilt angle of the cabin upper cover, facilitating the adjustment and alignment of the angles of the cabin upper cover and the cabin lower cover, and installing them. The above is the overall workflow of the present invention, and you can repeat this step next time you use it.

[0036] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for fixing the angle of a nacelle cover, comprising a support leg (6), wherein a square frame (1) is provided on the support leg (6), and wherein: The square frame (1) is provided with a translation mechanism (2), the translation mechanism (2) is provided with an angle adjustment mechanism (3), and the angle adjustment mechanism (3) is provided with an inner cabin top suction cup mechanism (4); the translation mechanism (2) comprises a longitudinal translation component (7) and a transverse translation component (8), the longitudinal translation component (7) is arranged on the square frame (1), and the transverse translation component (8) is arranged on the longitudinal translation component (7).

2. The device for fixing the angle of a nacelle cover according to claim 1, characterized in that: The longitudinal translation assembly (7) comprises a first motor (9), the first motor (9) being arranged on one side of the inner wall of the square frame (1), the output end of the first motor (9) being provided with one end of a driving tube (10), the other end of the driving tube (10) being rotatably arranged on the other inner wall of the square frame (1), the driving tube (10) being sleeved with a bevel gear 1 (11), a sliding rod (14) being arranged on the outer wall of the square frame (1), a first lead screw (13) being rotatably arranged on the outer wall of the square frame (1), one end of the first lead screw (13) being provided with a bevel gear 2 (12), the bevel gear 1 (11) and the bevel gear 2 (12) being meshed and rotatably connected, a first moving block (15) being slidably sleeved on the sliding rod (14), the first moving block (15) being sleeved on the first lead screw (13), and the first lead screw (13) and the first moving block (15) being threadedly connected.

3. The device for fixing the angle of a nacelle cover according to claim 2, characterized in that: The lateral translation assembly (8) comprises a lifting cylinder (16), wherein the lifting cylinder (16) is arranged on the first moving block (15), and a lifting plate (17) is arranged at the output end of the lifting cylinder (16), wherein a first elongated groove (18) is arranged in the lifting plate (17), wherein a sliding groove (19) is arranged in the first elongated groove (18), wherein a first sliding block (23) is slidingly arranged in the sliding groove (19), wherein a supporting rod (44) is arranged at the upper end of the first sliding block (23), and wherein the supporting rod (44) is arranged at the upper end of the first sliding block (23). 4), a second moving block (24) is provided at the upper end thereof, a sleeve (22) is provided at the lower end of the second moving block (24), a second motor (20) is provided at one end outside the lifting plate (17), a second lead screw (21) is provided at the output end of the second motor (20), the other end of the second lead screw (21) is rotatably disposed on the inner side wall of the first elongated groove (18), the sleeve (22) is sleeved on the second lead screw (21), and the second lead screw (21) and the sleeve (22) are threadedly connected.

4. The device for fixing the angle of a nacelle cover according to claim 3, characterized in that: The angle adjustment mechanism (3) comprises a first tilting component (25) and a third tilting component (27); the third tilting component (27) is arranged on the second moving block (24); and the first tilting component (25) is arranged on the third tilting component (27).

5. The device for fixing the angle of a nacelle cover according to claim 4, characterized in that: The third tilting assembly (27) comprises a second fixed column (34), the second fixed column (34) being arranged on the second moving block (24), the upper end of the second fixed column (34) being hinged to an angle adjustment plate (35), one side of the upper end of the second moving block (24) being hinged to a cylinder seat of a third cylinder (32), the output end of the third cylinder (32) being hinged to one side of a lower end of the angle adjustment plate (35), the other side of the upper end of the second moving block (24) being hinged to a cylinder seat of a fourth cylinder (33), and the output end of the fourth cylinder (33) being hinged to the other side of a lower end of the angle adjustment plate (35).

6. The device for fixing the angle of a nacelle cover according to claim 5, characterized in that: The first tilting assembly (25) comprises a first fixing column (28), the first fixing column (28) being arranged on an angle adjustment plate (35), the upper end of the first fixing column (28) intersecting the supporting cavity (31), one side of the upper end of the angle adjustment plate (35) being hinged to a cylinder seat of a first cylinder (29), the output end of the first cylinder (29) being hinged to one side of a lower end of the supporting cavity (31), the other side of the upper end of the angle adjustment plate (35) being hinged to a cylinder seat of a second cylinder (30), and the output end of the second cylinder (30) being hinged to the other side of the lower end of the supporting cavity (31).

7. The device for fixing the angle of a nacelle cover according to claim 6, characterized in that: The inner cabin top suction cup mechanism (4) comprises an adsorption component (45) and a fixing component (46); the adsorption component (45) is arranged in the supporting cavity (31); and the fixing component (46) is arranged in the supporting cavity (31).

8. The device for fixing the angle of a nacelle cover according to claim 7, characterized in that: The adsorption component (45) comprises a magnetorheological fluid cavity (36), the magnetorheological fluid cavity (36) being arranged at the internal top end of the support cavity (31), a spring (38) being arranged at the internal bottom end of the magnetorheological fluid cavity (36), a second slider (37) being arranged at the upper end of the spring (38), the second slider (37) being slidably arranged in the magnetorheological fluid cavity (36), a solution flow hole (39) being arranged on the second slider (37), a buffer rod (41) being arranged at the upper end of the second slider (37), and an electric suction cup (42) being arranged at the upper end of the buffer rod (41).

9. The device for fixing the angle of a nacelle cover according to claim 8, characterized in that: The fixing component (46) comprises a controller (43), the controller (43) being arranged at the inner bottom end of the supporting cavity (31), an electromagnetic coil (40) being wound around the outer wall of the magnetorheological fluid cavity (36), the electromagnetic coil (40) being connected to the controller (43), the controller (43) being externally connected to a power source, and a magnetorheological fluid being arranged in the magnetorheological fluid cavity (36).

10. The device for fixing the angle of a nacelle cover according to claim 9, characterized in that: A sealing ring (47) is provided at the upper end of the supporting cavity (31), and the sealing ring (47) is slidably sleeved on the buffer rod (41).

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