A nacelle cover moving device for a wind turbine and its operation method

Abstract

The present invention provides a nacelle cover moving device for a wind turbine and an operation method thereof. The nacelle cover moving device includes a plurality of moving devices, and each moving device includes: a jacking mechanism fixedly installed in the nacelle, which includes an upper column and a lower column, and the upper column is adapted to move vertically in the lower column; a soft support structure is provided at the top of the upper column; a towing wheel mechanism is arranged on one side of the jacking mechanism, which includes a towing wheel frame and a towing wheel. One end of the towing wheel frame is provided with a towing wheel groove, and the towing wheel is arranged in the towing wheel groove and rotatably connected to the towing wheel frame; when moving the nacelle cover, the upper column moves vertically upward, so that the soft support structure contacts the inner wall of the nacelle cover, jacks up the nacelle cover upward, so that the nacelle cover is separated from the nacelle housing and an operation space is formed; the towing wheel mechanism is connected to the jacking mechanism, and the end of the towing wheel frame provided with the towing wheel groove is arranged above the connecting flange; the upper column moves vertically downward, so that the mounting flange is arranged on the towing wheel; push the nacelle cover, and the nacelle cover moves along the towing wheel groove with the towing wheel.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind power generation, and particularly relates to a nacelle cover moving device for a wind turbine and an operation method thereof. Background Art

[0002] With the increasing installation capacity of wind turbines and the growing service life of wind turbines year by year, component replacement is required for wind turbines, especially blade replacement. A wind turbine includes a tower fixed to the ground, a nacelle installed at the top of the tower, a hub installed in the nacelle, and blades installed on the hub; the hub is disposed at one end within the nacelle housing, and the blades are connected to the hub outside the nacelle housing.

[0003] Since the blades are very heavy and the tower is relatively tall, large truck cranes are usually used for blade replacement in wind turbines. For high tower wind turbines with large megawatts, crawler cranes are required to complete blade replacement, and leg boats are used for blade replacement in offshore wind turbines. However, the use of large lifting equipment not only incurs high lifting costs but is also subject to environmental conditions. Therefore, when using an on-tower crane installed in the nacelle for blade replacement, the nacelle cover needs to be moved first to make room for the installation of the on-tower crane; how to move the nacelle cover without using a large ground crane is an urgent problem to be solved.

[0004] Therefore, it is necessary to provide a nacelle cover moving device for a wind turbine and an operation method thereof to complete the movement of the nacelle cover without using a large ground crane. Summary of the Invention

[0005] The present invention provides a nacelle cover moving device for a wind turbine and an operation method thereof, which can achieve stable and reliable movement of the nacelle cover without using a large ground crane.

[0006] To achieve the above object, the present invention provides the following technical solutions.

[0007] A nacelle cover moving device for a wind turbine, wherein the nacelle cover is disposed on the nacelle housing to enclose the nacelle housing. A connecting flange is formed by bending the top edge of the nacelle housing inward, and a mounting flange is formed by bending the bottom edge of the nacelle cover inward. The nacelle cover and the nacelle housing are fixedly connected by mounting bolts passing through the mounting flange and the connecting flange. The device includes a plurality of moving devices disposed on both sides inside the nacelle. The moving device includes:

[0008] A jacking mechanism, fixedly installed in the nacelle for vertically moving the nacelle cover, including an upper column and a lower column, wherein the upper column is adapted to move vertically within the lower column; a soft support structure is provided at the top of the upper column.

[0009] The tugboat mechanism is arranged on one side of the jacking mechanism and is detachably connected to the jacking mechanism. It includes a tugboat frame and a tugboat. One end of the tugboat frame is provided with a tugboat groove, and the tugboat is arranged in the tugboat groove and rotatably connected to the tugboat frame; the other end of the tugboat frame is connected to the lower column.

[0010] When moving the engine nacelle cover, the upper column moves vertically upward, so that the soft support structure contacts the inner wall of the engine nacelle cover, jacks up the engine nacelle cover upward, so that the engine nacelle cover is separated from the engine nacelle housing and an operation space is formed; the tugboat mechanism is connected to the jacking mechanism, and the end of the tugboat frame provided with the tugboat groove is arranged above the connecting flange; the upper column moves vertically downward, so that the mounting flange is arranged on the tugboat; when pushing the engine nacelle cover, the engine nacelle cover moves along the tugboat groove along with the tugboat.

[0011] Preferably, it further includes a sliding component. The sliding component includes a sliding plate. The sliding plate is fixed to the bottom surface of the mounting flange. The width of the sliding plate matches the width of the tugboat groove. The extending direction of the sliding plate coincides with the extending direction of the tugboat groove. The sliding plate is arranged above the tugboat. When pushing the engine nacelle cover, the engine nacelle cover moves along the tugboat groove along with the sliding plate.

[0012] Preferably, the sliding component further includes a pressing block connecting the sliding plate and the mounting flange. The pressing block is provided with a fixing hole and a positioning protrusion. The positioning protrusion is arranged below the pressing block; the mounting flange is provided with a mounting hole, and the sliding plate is provided with a fixing block. The fixing block is arranged in a matching manner with the mounting hole, and the fixing block is provided with a threaded hole; when the pressing block connects the sliding plate and the mounting flange, the positioning protrusion is snapped into the mounting hole, the fixing hole and the threaded hole are arranged correspondingly, and the sliding plate and the mounting flange are locked and fixed by a fastener passing through the fixing hole and screwing into the threaded hole.

[0013] Preferably, the lower column includes a lower column body, a lifting driving structure and a connecting column body connected in sequence. The connecting column body is a hollow structure. The upper column is inserted into the connecting column body to connect the lifting driving structure, and the lifting driving structure drives the upper column to move vertically along the connecting column body.

[0014] Preferably, the lower column is arranged in a lower fixed seat. The bottom end of the lower column body is connected to the fixed seat through a pin shaft. The fixed seat is connected with a moving driving structure, and the moving driving structure drives the lower column body to move in the fixed seat along the pin shaft.

[0015] Preferably, the mobile device further includes a first anti-overturning component, the first anti-overturning component includes a first wheel set, the first wheel set is arranged on one side of the inner wall of the towing wheel groove close to the engine room, and the first wheel set is located above the mounting flange or above the sliding plate.

[0016] Preferably, the mobile device further includes a second anti-overturning component, the second anti-overturning component includes a second wheel set, the second wheel set is arranged on one side of the inner wall of the towing wheel groove far from the engine room, and the second wheel set is located above the sliding plate.

[0017] Preferably, the soft support structure includes a jacking seat and a soft gasket arranged on the top of the jacking seat, a universal ball hinge is arranged at the top end of the upper column, and the universal ball hinge is hinged to the jacking seat.

[0018] Based on the same concept, the present invention further provides an operation method for the nacelle cover mobile device for a wind turbine unit as described above, including the following steps:

[0019] Provide a jacking mechanism and fix the jacking mechanism at set positions on both sides inside the engine room;

[0020] Operate the lifting drive structure to drive the upper column to move vertically upward, so that the soft support structure contacts the inner wall of the nacelle cover, jack up the nacelle cover, so that the nacelle cover is separated from the nacelle housing and an operation space is reserved;

[0021] Provide a towing wheel mechanism and install the towing wheel mechanism on one side of the jacking mechanism close to the nacelle cover, and make one end of the towing wheel frame provided with a towing wheel groove be arranged above the connecting flange;

[0022] Operate the lifting drive structure to drive the upper column to move vertically downward, so that the mounting flange is arranged on the towing wheel, and at this time the soft support structure is separated from the nacelle cover;

[0023] Provide a first anti-overturning component, fix the first wheel set on one side of the inner wall of the towing wheel groove close to the engine room, and make the first wheel set be located above the mounting flange;

[0024] Push the nacelle cover, so that the nacelle cover moves along the towing wheel groove with the towing wheel.

[0025] Preferably, the bottom edge of the nacelle cover is arc-shaped; a sliding plate is fixed to the bottom surface of the mounting flange. After installing the towing wheel mechanism, the following steps are further included:

[0026] Provide a second anti-overturning component, fix the second wheel set on one side of the inner wall of the towing wheel groove far from the engine room, and make a space for installing the sliding plate be reserved between the first wheel set and the towing wheel;

[0027] Operate the lifting drive structure to drive the upper column to move vertically downward, so that the mounting flange is arranged above the idler wheel, and a space for installing the slide plate is reserved between the mounting flange and the idler wheel;

[0028] Provide a sliding assembly to arrange the slide plate on the bottom surface of the mounting flange, and fix the slide plate to the mounting flange through a pressing block and fasteners;

[0029] Operate the lifting drive structure to drive the upper column to move vertically downward, so that the slide plate is arranged on the idler wheel, and at this time the soft support structure is separated from the nacelle cover;

[0030] Provide a first anti-overturning assembly to fix the first wheel set on the inner wall of the idler wheel groove close to the nacelle, and make the first wheel set located above the slide plate;

[0031] Push the nacelle cover so that the nacelle cover moves along the idler wheel groove with the slide plate.

[0032] Compared with the prior art, the technical solution of the embodiment of the present invention has beneficial effects.

[0033] For example, the present invention sets multiple groups of moving devices. The moving device includes a jacking mechanism and an idler wheel mechanism. The vertical movement of the nacelle cover is realized through the jacking mechanism. When the nacelle cover is separated from the nacelle housing, the idler wheel mechanism is installed, the mounting flange is arranged on the idler wheel mechanism, and the rotation of the idler wheel drives the nacelle cover to move; the movement of the nacelle cover is realized without using a large ground crane;

[0034] For another example, the present invention sets a slide plate assembly. When the shape of the nacelle cover is irregular and the edge is arc-shaped, a slide plate is arranged on the bottom surface of the mounting flange to convert the arc into a straight line of the slide plate, which is beneficial to the straight-line movement of the nacelle cover and the movement is more stable and reliable;

[0035] For another example, the present invention sets an anti-overturning assembly to prevent the nacelle cover from overturning and the movement is more stable and reliable;

[0036] For another example, the present invention sets a soft support structure at the top of the jacking mechanism to realize the soft support of the inner wall of the nacelle cover and reduce the influence on the inner surface of the nacelle cover; the top of the jacking mechanism is connected to the soft support structure by a universal ball hinge. When the inner surface of the nacelle cover is arc-shaped, the angle of the soft support structure can be adjusted adaptively to avoid forming stress concentration points on the inner surface of the nacelle cover and causing damage to the nacelle cover. Description of the Drawings

[0037] Figure 1 is a schematic structural diagram of the nacelle in the embodiment of the present invention;

[0038] Figure 2 is a schematic connection diagram of the nacelle housing and the nacelle cover in the embodiment of the present invention;

[0039] Figure 3 It is a schematic diagram of the separation between the nacelle housing and the nacelle cover in an embodiment of the present invention;

[0040] Figure 4 It is a schematic diagram of multiple moving devices arranged in the nacelle in an embodiment of the present invention;

[0041] Figure 5 It is a schematic diagram of the structure of the moving device in an embodiment of the present invention;

[0042] Figure 6 It is a schematic diagram of the structure of the jacking mechanism in an embodiment of the present invention;

[0043] Figure 7 It is a schematic diagram of the structure of the tugboat mechanism in an embodiment of the present invention;

[0044] Figure 8 It is a schematic diagram of the connection between the mounting flange of the nacelle cover and the sliding plate in an embodiment of the present invention;

[0045] Figure 9 It is a schematic diagram of installing the sliding plate onto the mounting flange of the nacelle cover in an embodiment of the present invention;

[0046] Figure 10 It is a schematic diagram of the nacelle cover arranged on the tugboat in an embodiment of the present invention;

[0047] Figure 11 It is a side view of the nacelle cover arranged on the tugboat in an embodiment of the present invention;

[0048] Figure 12 It is a schematic diagram of the nacelle cover with a sliding plate arranged on the tugboat in an embodiment of the present invention;

[0049] Figure 13 It is a side view of the nacelle cover with a sliding plate arranged on the tugboat in an embodiment of the present invention;

[0050] Figure 14 It is a schematic diagram of the completion of the installation of the nacelle cover moving device for a wind turbine in an embodiment of the present invention;

[0051] Figure 15 It is a schematic diagram of the use of the nacelle cover moving device for a wind turbine in an embodiment of the present invention.

[0052] Explanation of reference numerals:

[0053] 1 - nacelle cover; 11 - mounting flange; 111 - mounting hole; 12 - rain gutter;

[0054] 2 - nacelle housing; 21 - connection flange;

[0055] 3 - Jacking mechanism; 31 - Upper column; 311 - Universal ball joint; 32 - Lower column; 321 - Lower column body; 322 - Lifting drive structure; 323 - Connecting column body; 33 - Soft support structure; 331 - Jacking seat; 332 - Soft gasket; 34 - Lower fixed seat; 341 - Pin shaft

[0056] 4 - Tug wheel mechanism; 41 - Tug wheel frame; 411 - Tug wheel groove; 42 - Tug wheel

[0057] 5 - Sliding component; 51 - Skid plate; 511 - Fixed block; 512 - Threaded hole; 52 - Pressing block; 521 - Fixed hole; 522 - Positioning protrusion; 53 - Fastener

[0058] 6 - First anti - tipping component; 61 - First wheel set

[0059] 7 - Second anti - tipping component; 71 - Second wheel set Detailed implementation manners

[0060] To make the objectives, features, and beneficial effects of the present invention more obvious and understandable, the detailed implementation manners of the present invention will be described in detail below with reference to the accompanying drawings. It can be understood that the following described detailed implementation manners are only used to explain the present invention and are not intended to limit the present invention. Moreover, in the drawings, the same or similar reference numerals may be used to refer to the same or similar elements in different embodiments, and the descriptions of the same or similar elements in different embodiments and the descriptions of elements, features, effects, etc. of the prior art may also be omitted

[0061] Refer to Figures 1 to 3 , the nacelle cover 1 is arranged on the nacelle housing 2 to enclose the nacelle housing 2. A connecting flange 21 is formed by bending the top edge of the nacelle housing 2 inward, and a mounting flange 11 is formed by bending the bottom edge of the nacelle cover 1 inward. The nacelle cover 1 and the nacelle housing 2 are fixedly connected by mounting bolts passing through the mounting flange 11 and the connecting flange 21

[0062] Refer to Figures 4 to 15 , an embodiment of the present invention provides a nacelle cover moving device for a wind turbine

[0063] Specifically, the nacelle cover moving device for a wind turbine includes a plurality of moving devices arranged on both sides inside the nacelle. The moving device includes:

[0064] A jacking mechanism 3, fixedly installed in the nacelle, used to move the nacelle cover 1 in the vertical direction, including an upper column 31 and a lower column 32. The upper column 31 is adapted to move vertically in the lower column 32; a soft support structure 33 is arranged at the top of the upper column 31

[0065] The tug mechanism 4 is arranged on one side of the jacking mechanism 3 and is detachably connected to the jacking mechanism 3. It includes a tug frame 41 and a tug wheel 42. One end of the tug frame 41 is provided with a tug wheel groove 411, and the tug wheel 42 is arranged in the tug wheel groove 411 and is rotatably connected to the tug frame 41; the other end of the tug frame 41 is connected to the lower column 32;

[0066] When moving the engine hood 1, the upper column 31 moves vertically upward, so that the soft support structure 33 contacts the inner wall of the engine hood 1, jacks up the engine hood 1 upward, so that the engine hood 1 is separated from the engine housing 2 and an operation space is formed; the tug mechanism 4 is connected to the jacking mechanism 3, and the end of the tug frame 41 provided with the tug wheel groove 411 is arranged above the connecting flange 21; the upper column 31 moves vertically downward, so that the mounting flange 11 is arranged on the tug wheel 42; by pushing the engine hood 1, the engine hood 1 moves along the tug wheel groove 411 with the tug wheel 42.

[0067] Specifically, the tug wheel 42 is arranged perpendicular to the extending direction of the tug wheel groove 411, and both ends of the tug wheel 42 are rotatably connected to the side walls of the tug wheel groove 411; the extending direction of the tug wheel groove 411 is consistent with the length direction of the engine housing 2, and the engine hood 1 moves along the length direction of the engine housing 2.

[0068] In some embodiments, the lower column 32 includes a lower column body 321, a lifting drive structure 322 and a connecting column body 323 connected in sequence. The connecting column body 323 is a hollow structure, and the upper column 31 is inserted into the connecting column body 323 to connect the lifting drive structure 322, and the lifting drive structure 322 drives the upper column 31 to move vertically along the connecting column body 323.

[0069] Specifically, the lifting drive structure 322 is provided with a drive handle. By shaking the handle, the vertical movement of the upper column 31 relative to the lower column 32 is realized. The lifting drive structure 322 can adopt a worm and screw drive or a hydraulic cylinder drive, or other similar mechanisms that can achieve this function, which is not limited here.

[0070] In some embodiments, the lower column 32 is arranged in the lower fixed seat 34. The bottom end of the lower column body 321 is connected to the fixed seat 34 through a pin shaft 341, and the fixed seat 34 is connected with a moving drive structure (not shown), and the moving drive structure drives the lower column body 321 to move in the fixed seat 34 along the pin shaft 341.

[0071] Specifically, the moving drive structure can adopt a worm and screw drive or a hydraulic cylinder drive, or other similar mechanisms that can achieve this function, which is not limited here.

[0072] Specifically, in some embodiments, a rain guide groove 12 is provided at the front end of the nacelle cover 1. When the blade is connected to the hub, the joint between the blade and the nacelle cover extends into the rain guide groove 12. When the nacelle cover 1 is lifted upward, the nacelle cover 1 is separated from the nacelle housing 2. Due to the obstruction of the joint between the blade and the nacelle cover 1, sufficient operating space cannot be formed between the nacelle cover 1 and the nacelle housing 2. Therefore, when the nacelle cover 1 is lifted upward so that the nacelle cover 1 is separated from the nacelle housing 2 by a small height, the operation moves the driving structure to drive the lower column 321 to move along the pin shaft 341 in the fixed seat 34, so that the lifting mechanism 3 drives the nacelle cover 1 to move along the length direction to avoid the obstruction of the joint between the blade and the nacelle cover 1. Then, the nacelle cover 1 is further lifted so that sufficient operating space is formed between the nacelle cover 1 and the nacelle housing 2.

[0073] In some embodiments, the moving device further includes a first anti-overturning assembly 6. The first anti-overturning assembly 6 includes a first wheel set 61. The first wheel set 61 is arranged on the inner wall of the towing wheel groove 411 close to the nacelle, and the first wheel set 61 is located above the mounting flange 11 or above the sliding plate 51, and guides and blocks the overturning of the nacelle cover 1 when the nacelle cover 1 moves.

[0074] In some embodiments, the moving device further includes a second anti-overturning assembly 7. The second anti-overturning assembly 7 includes a second wheel set 71. The second wheel set 71 is arranged on the inner wall of the towing wheel groove 411 far from the nacelle, and the second wheel set 71 is located above the sliding plate 51, and guides and blocks the overturning of the nacelle cover 1 when the nacelle cover 1 moves.

[0075] In some embodiments, the soft support structure 33 includes a jacking seat 331 and a soft gasket 332 arranged on the top of the jacking seat 331. A universal ball hinge 311 is arranged at the top end of the upper column 31, and the universal ball hinge 311 is hinged to the jacking seat 331.

[0076] Specifically, the nacelle cover 1 is made of fiberglass. The soft gasket 332 realizes the soft support for the inner wall of the nacelle cover 1 and reduces the influence on the inner surface of the nacelle cover 1. The universal ball hinge 311 connects the soft support structure 33. When the inner surface of the nacelle cover 1 is arc-shaped, the angle of the soft support structure 33 can be adjusted adaptively to avoid forming stress concentration points on the inner surface of the nacelle cover 1 and causing damage to the nacelle cover 1.

[0077] In some embodiments, a sliding assembly 5 is further included. The sliding assembly 5 includes a sliding plate 51. The sliding plate 51 is fixed to the bottom surface of the mounting flange 11. The width of the sliding plate 51 matches the width of the towing wheel groove 411. The extending direction of the sliding plate 51 coincides with the extending direction of the towing wheel groove 411. The sliding plate 51 is arranged above the towing wheel 42. When the nacelle cover 1 is pushed, the nacelle cover 1 moves along the towing wheel groove 411 along with the sliding plate 51.

[0078] Specifically, in some embodiments, the bottom edge of the nacelle cover 1 is arc-shaped, such that the mounting flange 11 is arc-shaped. The mounting flange 11 is directly disposed on the tugboat 42. If the width of the tugboat groove 411 is small, it cannot adapt to the position change in the width direction of the arc-shaped mounting flange 11. If the width of the tugboat groove 411 is large, the movable range of the mounting flange 11 in the width direction is large, and it cannot ensure that the nacelle cover 1 moves in a straight line, resulting in the center of gravity shifting and affecting the stability of the movement. Therefore, a sliding component 5 is provided to convert the arc shape of the mounting flange 11 into the straight shape of the sliding plate 51, which is beneficial for the nacelle cover 1 to move in a straight line and the movement is more stable and reliable.

[0079] In some embodiments, the sliding component 5 further includes a pressing block 52 connecting the sliding plate 51 and the mounting flange 11. The pressing block 52 is provided with a fixing hole 521 and a positioning protrusion 522, and the positioning protrusion 522 is disposed below the pressing block 52. The mounting flange 11 is provided with a mounting hole 111, and the sliding plate 51 is provided with a fixing block 511. The fixing block 511 is arranged to match the mounting hole 111, and the fixing block 511 is provided with a threaded hole 512. When the pressing block 52 connects the sliding plate 51 and the mounting flange 11, the positioning protrusion 522 is snapped into the mounting hole 111, the fixing hole 521 and the threaded hole 512 are correspondingly arranged, and the sliding plate 51 and the mounting flange 11 are locked and fixed by a fastener 53 passing through the fixing hole 521 and screwed into the threaded hole 512.

[0080] Specifically, the fixing hole 521 is an oblong hole, and it can be adaptively adjusted when there is a slight deviation in the positions of the fixing hole 521 and the threaded hole 512; the fastener 53 is a screw.

[0081] The present invention also provides an operation method for the nacelle cover moving device for a wind turbine unit as described above, including the following steps:

[0082] Provide a jacking mechanism 3 and fix the jacking mechanism 3 at set positions on both sides inside the nacelle;

[0083] Operate the lifting drive structure 322 to drive the upper column 31 to move vertically upward, so that the soft support structure 33 contacts the inner wall of the nacelle cover 1, jack up the nacelle cover 1, and separate the nacelle cover 1 from the nacelle housing 2 to reserve an operation space;

[0084] Provide a tugboat mechanism 4 and install the tugboat mechanism 4 on one side of the jacking mechanism 3 close to the nacelle cover 1, and make the end of the tugboat frame 41 provided with the tugboat groove 411 be disposed above the connecting flange 21;

[0085] Operate the lifting drive structure 322 to drive the upper column 31 to move vertically downward, so that the mounting flange 11 is disposed on the tugboat 42, and at this time the soft support structure 33 is separated from the nacelle cover 1;

[0086] Provide a first anti-overturning component 6 to fix the first wheel set 61 on the inner wall of the towing wheel groove 411 near the engine room, and make the first wheel set 61 located above the mounting flange 11;

[0087] Push the engine room cover 1 so that the engine room cover 1 moves along the towing wheel groove 411 with the towing wheel 42.

[0088] In some embodiments, the bottom edge of the engine room cover 1 is arc-shaped; a sliding plate 51 is fixed to the bottom surface of the mounting flange 11. After installing the towing wheel mechanism 4, the following steps are further included:

[0089] Provide a second anti-overturning component 7 to fix the second wheel set 71 on the inner wall of the towing wheel groove 411 away from the engine room, and leave a space for installing the sliding plate 51 between the first wheel set 61 and the towing wheel 42;

[0090] Operate the lifting drive structure 322 to drive the upper column 31 to move vertically downward, so that the mounting flange 11 is arranged above the towing wheel 42, and leave a space for installing the sliding plate 51 between the mounting flange 11 and the towing wheel 42;

[0091] Provide a sliding component 5 to set the sliding plate 51 on the bottom surface of the mounting flange 11, and fix the sliding plate 51 to the mounting flange 11 through a pressing block 52 and a fastener 53;

[0092] Operate the lifting drive structure 322 to drive the upper column 31 to move vertically downward, so that the sliding plate 51 is arranged on the towing wheel 42. At this time, the soft support structure 33 is separated from the engine room cover 1;

[0093] Provide a first anti-overturning component 6 to fix the first wheel set 61 on the inner wall of the towing wheel groove 411 near the engine room, and make the first wheel set 411 located above the sliding plate 51;

[0094] Push the engine room cover 1 so that the engine room cover 1 moves along the towing wheel groove 411 with the sliding plate 51.

[0095] In summary, the engine room cover moving device and its operation method for a wind turbine provided by the present invention are provided with multiple sets of moving devices. The moving device includes a jacking mechanism 3 and a towing wheel mechanism 4. The vertical movement of the engine room cover 1 is realized through the jacking mechanism 3. When the engine room cover 1 is separated from the engine room housing 2, the towing wheel mechanism 4 is installed, and the mounting flange 11 is arranged on the towing wheel mechanism 4. The rotation of the towing wheel 42 drives the movement of the engine room cover 1; the movement of the engine room cover 1 is realized without using a large ground crane;

[0096] For another example, the present invention provides a sliding plate assembly 5. When the shape of the engine room cover 1 is irregular and the edge is arc-shaped, a sliding plate 51 is arranged on the bottom surface of the mounting flange 11 to convert the arc into a straight line of the sliding plate 51, which is beneficial to the straight-line movement of the engine room cover 1 and the movement is more stable and reliable;

[0097] For another example, the anti-overturning component is provided in the present invention to prevent the nacelle cover 1 from overturning, making the movement more stable and reliable;

[0098] For another example, a soft support structure 33 is provided at the top of the jacking mechanism 3 in the present invention to achieve soft support with the inner wall of the nacelle cover 1, reducing the impact on the inner surface of the nacelle cover 1; the top universal ball hinge 311 of the jacking mechanism 3 is connected to the soft support structure 33. When the inner surface of the nacelle cover 1 is arc-shaped, the angle of the soft support structure 33 can be adjusted adaptively to avoid forming a stress concentration point on the inner surface of the nacelle cover 1 and causing damage to the nacelle cover 1.

[0099] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when a single embodiment is described only with respect to a specific feature. The feature examples provided in the present disclosure are intended to be illustrative rather than restrictive, unless otherwise stated. In specific implementations, according to actual needs and when technically feasible, the technical features of one or more dependent claims can be combined with the technical features of the independent claim, and can be obtained from the technical features of the corresponding independent claim in any appropriate manner rather than only through the specific combinations listed in the claims.

Claims

1. A nacelle cover moving device for a wind turbine generator, wherein the nacelle cover is arranged on a nacelle shell to close the nacelle shell, the top edge of the nacelle shell is bent inwardly to form a connecting flange, the bottom edge of the nacelle cover is bent inwardly to form a mounting flange, the nacelle cover is fixedly connected to the nacelle shell by mounting bolts passing through the mounting flange and the connecting flange; characterized in that: The invention comprises a plurality of moving devices arranged on both sides of the cabin, wherein the moving devices include: A lifting mechanism is fixedly installed in the nacelle and used to move the nacelle cover in a vertical direction, comprising an upper column and a lower column, wherein the upper column is suitable for moving in a vertical direction in the lower column; a soft supporting structure is provided on the top of the upper column; The lower column is arranged in the lower fixed seat, the bottom end of the lower column is connected to the fixed seat via a pin shaft, the fixed seat is connected to a moving driving structure, and the moving driving structure drives the lower column to move along the pin shaft in the fixed seat; A tugboat mechanism is arranged at one side of the jacking mechanism, and is detachably connected to the jacking mechanism, and comprises a tugboat frame and a tugboat, wherein one end of the tugboat frame is provided with a tugboat groove, and the tugboat is arranged in the tugboat groove and is rotatably connected to the tugboat frame; and the other end of the tugboat frame is connected to the lower column; When the nacelle cover is moved, the upper column moves vertically upward, so that the soft support structure contacts the inner wall of the nacelle cover, and the nacelle cover is lifted upward, so that the nacelle cover is separated from the nacelle shell by a small height; the mobile driving structure is operated to drive the lower column to move in the fixed seat along the pin shaft, so that the lifting mechanism drives the nacelle cover to move along the length direction to avoid the obstruction of the junction of the blade and the nacelle cover; the nacelle cover is further lifted, so that an operating space is formed between the nacelle cover and the nacelle shell; the tugboat mechanism is connected to the lifting mechanism, and one end of the tugboat frame provided with the tugboat groove is provided above the connecting flange; the upper column moves vertically downward, so that the mounting flange is provided on the tugboat; the nacelle cover is pushed, and the nacelle cover moves along the tugboat groove with the tugboat.

2. The nacelle cover moving device for a wind turbine according to claim 1, characterized in that: It also includes a sliding assembly, which includes a slide plate, which is fixed to the bottom surface of the mounting flange, the width of the slide plate matches the width of the tugboat groove, the extension direction of the slide plate coincides with the extension direction of the tugboat groove, the slide plate is arranged above the tugboat, and when the cabin cover is pushed, the cabin cover moves along the tugboat groove with the slide plate.

3. The nacelle cover moving device for a wind turbine according to claim 2, characterized in that: The sliding assembly also includes a pressure block connecting the slide plate and the mounting flange, the pressure block is provided with a fixing hole and a positioning protrusion, and the positioning protrusion is arranged below the pressure block; the mounting flange is provided with a mounting hole, and the slide plate is provided with a fixing block, the fixing block is matched with the mounting hole, and the fixing block is provided with a threaded hole; when the pressure block connects the slide plate and the mounting flange, the positioning protrusion is inserted into the mounting hole, the fixing hole and the threaded hole are arranged correspondingly, and the slide plate and the mounting flange are locked and fixed by fasteners passing through the fixing hole and screwed into the threaded hole.

4. The nacelle cover moving device for a wind turbine according to claim 1, characterized in that: The lower column includes a lower column body, a lifting drive structure and a connecting column body which are connected in sequence. The connecting column body is a hollow structure. The upper column is inserted into the connecting column body and connected to the lifting drive structure. The lifting drive structure drives the upper column to move along the vertical direction of the connecting column body.

5. The nacelle cover moving device for a wind turbine according to claim 1, characterized in that: The mobile device also includes a first anti-overturning component, which includes a first wheel group. The first wheel group is arranged on a side of the inner wall of the tugboat groove close to the cabin, and the first wheel group is located above the mounting flange.

6. The nacelle cover moving device for a wind turbine according to claim 2, characterized in that: The mobile device also includes a second anti-overturning component, which includes a second wheel group. The second wheel group is arranged on the inner wall of the tugboat groove away from the cabin, and the second wheel group is located above the slide plate.

7. The nacelle cover moving device for a wind turbine according to claim 1, characterized in that: The soft support structure comprises a lifting seat and a soft gasket arranged on the top of the lifting seat. A universal ball joint is arranged on the top of the upper column, and the universal ball joint is hinged to the lifting seat.

8. An operating method for a nacelle cover moving device for a wind turbine generator set according to any one of claims 1 to 7, characterized in that: The steps include: Providing a jacking mechanism, and fixing the jacking mechanism at set positions on both sides of the cabin; Operating the lifting drive structure to drive the upper column to move vertically upward, so that the soft support structure contacts the inner wall of the nacelle cover, and the nacelle cover is lifted upward, so that the nacelle cover is separated from the nacelle shell and an operating space is reserved; Providing a tugboat mechanism, installing the tugboat mechanism on a side of the jacking mechanism close to the nacelle cover, and making one end of the tugboat frame provided with the tugboat groove be arranged above the connecting flange; Operating the lifting drive structure to drive the upper column to move vertically downward so that the mounting flange is disposed on the tugboat, and at this time, the soft support structure is separated from the nacelle cover; Providing a first anti-overturning assembly, fixing a first wheel assembly to a side of the inner wall of the tugboat tank close to the cabin, and positioning the first wheel assembly above the mounting flange; The nacelle cover is pushed so that the nacelle cover moves along the tugboat groove along with the tugboat.

9. The method for operating the nacelle cover moving device for a wind turbine according to claim 8, characterized in that: The bottom edge of the nacelle cover is arc-shaped; a slide plate is fixed to the bottom surface of the mounting flange, and after the tug mechanism is installed, the following steps are also included: Providing a second anti-overturning assembly, fixing the second wheel set to a side of the inner wall of the tugboat groove away from the engine room, and leaving a space for installing the slide plate between the first wheel set and the tugboat; Operate the lifting drive structure to drive the upper column to move vertically downward, so that the mounting flange is arranged above the tugboat, and a space for mounting the slide plate is reserved between the mounting flange and the tugboat; Providing a sliding assembly to set the slide plate on the bottom surface of the mounting flange, and fixing the slide plate to the mounting flange by a pressing block and a fastener; Operating the lifting drive structure to drive the upper column to move vertically downward, so that the slide plate is set on the tugboat, and the soft support structure is separated from the nacelle cover; Providing a first anti-overturning assembly, fixing a first wheel set to a side of the inner wall of the tugboat tank close to the cabin, and positioning the first wheel set above the slide plate; The nacelle cover is pushed so that the nacelle cover moves along the tugboat groove along with the slide plate.

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