A device for integral lifting of a wind turbine superstructure and a method of use

Abstract

The application discloses a kind of for wind power generator superstructure integral lifting device and use method, comprising: fixed in the top of tower drum, pulley is rotationally arranged on it;First rotation axis lug plate is set on nacelle;Main body plate, second rotation axis lug plate is set on it, and it is detachably connected together with first rotation axis lug plate by a pin shaft, and the side of main body plate is rotationally arranged with telescopic component, and nacelle can be rotated with pin shaft as axis;Tow rope, one end is connected with main body plate, for towing main body plate to drive nacelle move on tower drum;Guiding component is used to guide main body plate to move.The application, by the mode of traction, wind power generator superstructure assembled is transported to the top of tower drum, then nacelle is overturned by telescopic component, and installation of wind power generator superstructure is completed in place, without using large lifting equipment, greatly reduce installation cost, and without frequent aerial work, high safety.

Description

Technical Field

[0001] This invention relates to the field of wind turbine construction technology, and in particular to an integral lifting device for the upper structure of a wind turbine and its usage method. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] In the new energy construction industry, wind turbine installation is a highly technical and dangerous field. The superstructure of a wind turbine consists of three parts: the nacelle, the hub, and the blades. Current construction techniques mostly involve using large hoisting equipment to lift components and sections separately. Due to the large weight of the components in the wind turbine superstructure, several problems arise: First, the installation height of the nacelle, hub, and blades is relatively high, resulting in significant weight deviations, necessitating the use of large-scale hoisting equipment, which is expensive. Second, large-scale hoisting equipment requires high foundation bearing capacity, leading to high processing costs. Third, due to the large size of the wind turbine components, whether the nacelle, hub, and blades are lifted separately or as a whole, most require the use of specialized lifting tools. Multiple hoisting operations are unavoidable during construction, resulting in frequent high-altitude work and a high risk factor.

[0004] Therefore, this application proposes an integral lifting device for the upper structure of a wind turbine and a method for using it to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing a lifting device and method for the overall lifting of the upper structure of a wind turbine generator.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A lifting device for the overall structure of a wind turbine generator, comprising:

[0008] The fastener is fixed to the top of the tower, and a pulley is rotatably mounted on it;

[0009] The first shaft lug is installed on the nacelle of the wind turbine to be lifted, and the end of it away from the nacelle has a first perforation;

[0010] The main body plate has a second pivot lug plate on its top. The second pivot lug plate has a second through hole. The second through hole and the first through hole are detachably connected together by a pin. A telescopic component is rotatably provided on one side of the main body plate. One end of the telescopic component is detachably connected to the cabin and can drive the cabin to rotate around the pin.

[0011] The traction rope has one end connected to the main body plate and the other end extending to the bottom of the tower after passing over the pulley at the top of the tower. It is used to pull the main body plate to move the nacelle on the tower. The fixing component has a rotating slot at the corresponding pin position. After the pin moves to the top of the tower, it is locked in the rotating slot and rotates with it.

[0012] The guide component is fitted onto the outside of the tower and connected to the main body plate, and is used to guide the main body plate as it moves on the tower.

[0013] Furthermore, two of the first and second pivot ears are provided at intervals. When the pin enters the rotating slot, the first and second pivot ears are located on both sides of the rotating slot and are limited by the fixing component.

[0014] Furthermore, the telescopic assembly includes a telescopic rod and a jacking auxiliary component. The jacking auxiliary component includes a rectangular frame, which is used to support the corresponding side of the cabin when the cabin rotates around the pivot pin.

[0015] A third pivot lug is provided at one end of the rectangular frame. A third through hole is provided on the third pivot lug. The third through hole is coaxially arranged with the second through hole and connected by the pin. A socket slide rod is slidably provided at one end of the rectangular frame. The socket slide rod can slide towards and away from the third through hole. The end of the socket slide rod away from the rectangular frame has a plug.

[0016] The corresponding plug position in the cabin is provided with a socket for mating with the plug.

[0017] One end of the telescopic rod is rotatably connected to the main plate, and the other end is rotatably engaged with the socket slide rod, which can drive the socket slide rod to slide towards and away from the third through hole.

[0018] Furthermore, the socket slide rod is slidably inserted through one end of the rectangular frame, and a transverse partition is provided inside the rectangular frame. The transverse partition is used to prevent the socket slide rod from continuing to slide into the rectangular frame after the plug is removed from the socket.

[0019] Furthermore, the guiding component includes two guide rings, which are distributed vertically on the main body plate. Each guide ring is detachably divided into two parts for fitting onto the corresponding tower tube and guiding and limiting the main body plate during its vertical movement.

[0020] Furthermore, each of the guide rings is provided with multiple rollers inside for contacting the tower wall.

[0021] Furthermore, each guide ring includes an inner ring and an outer ring, with the inner ring coaxially disposed inside the outer ring, and the inner ring and the outer ring being fixedly connected by a connecting plate;

[0022] It also includes multiple movable rods, which are evenly distributed on the guide ring and slide along the radial direction of the guide ring on the side walls of the corresponding inner and outer rings. Each roller is rotatably set at the end of the corresponding movable rod that extends into the guide ring.

[0023] A rack is fixedly installed on one side of each moving rod. A cylindrical gear is rotatably installed on the guide ring at the position corresponding to each rack, meshing with it. A ring gear is also rotatably installed on the guide ring, meshing with each cylindrical gear. A driving component is also provided on the guide ring for driving and controlling the forward and reverse rotation of the ring gear or cylindrical gear.

[0024] Furthermore, the fastener includes:

[0025] The first fastener is fixed to one side of the top of the tower.

[0026] The second fixing member is fixed on the top of the tower on the opposite side of the first fixing member, wherein the rotating slot is provided at the bottom of the second fixing member;

[0027] The pulley is provided in two parts, which are respectively rotatably mounted on the first fixed part and the second fixed part;

[0028] A through hole is provided at the top of the tower corresponding to the position of the first fixing member and the first fixing member. One end of the traction rope is connected to the main plate, and the other end passes through the pulley on the second fixing member, passes through the through hole at the top of the tower, and extends downward from the pulley on the first fixing member to the bottom of the tower.

[0029] A method of using a lifting device, comprising the above-described lifting device for the overall lifting of the upper structure of a wind turbine generator, the method comprising:

[0030] S1. Install fasteners on the top of the tower;

[0031] S2. Fix the first pivot lug plate to the nacelle;

[0032] S3. Install the tower;

[0033] S4. Assemble the lifting device on the ground and place the guide components on the outside of the tower for guidance;

[0034] S5. Insert the traction rope. One end of the traction rope is connected to the main plate, and the other end passes through the pulley on the fixing part and is connected to the traction device located on the ground.

[0035] S6. Assemble the upper structure of the wind turbine on the ground and connect the nacelle to the main body panel;

[0036] S7. Start the traction equipment to lift the engine compartment into position, and then start the telescopic assembly to push the engine compartment to rotate around the pivot pin.

[0037] S8. After the nacelle is rotated into place, the telescopic assembly retracts and separates from the nacelle. The pin is pulled out, and the nacelle separates from the main body panel.

[0038] S9. Lower the lifting device to the ground and dismantle it.

[0039] The beneficial effects of this invention are reflected in:

[0040] This application describes a method that uses traction to transport the assembled wind turbine upper structure to the top of the tower, and then uses telescopic components to rotate the nacelle to complete the installation of the wind turbine upper structure. This eliminates the need for large-scale hoisting equipment, greatly reducing installation costs and eliminating the need for frequent high-altitude operations, thus ensuring high safety. Attached Figure Description

[0041] Figure 1 This is a schematic diagram showing the state of the nacelle being hoisted to the top of the tower (before the nacelle is tilted).

[0042] Figure 2 This is a schematic diagram of the structure of the second fastener in this invention;

[0043] Figure 3 This is a schematic diagram of the structure of the first pivot lug in this invention;

[0044] Figure 4 This is a schematic diagram of the structure of the socket described in this invention;

[0045] Figure 5 This is a schematic diagram of the structure of the jacking auxiliary component described in this invention;

[0046] Figure 6 This is a schematic diagram of the structure of the diaphragm described in this invention;

[0047] Figure 7 This is a schematic diagram of the structure of the main plate described in this invention;

[0048] Figure 8 This is a schematic diagram of the structure of the guide ring described in this invention;

[0049] Figure 9 This is a schematic diagram of the outer ring structure described in this invention;

[0050] Figure 10 This is a schematic diagram of the structure of the movable rod described in this invention.

[0051] In the picture:

[0052] 1. Tower;

[0053] 2. First fastener;

[0054] 3. Second fixing component; 3-1. Rotating slot;

[0055] 4. Cabin;

[0056] 5. Slot and socket;

[0057] 6. First pivot lug; 6-1. First through hole;

[0058] 7. Pushing auxiliary components; 7-1. Rectangular frame; 7-2. Third pivot lug plate; 7-3. Third through hole; 7-4. Socket slide rod; 7-5. Plug; 7-6. Horizontal partition plate;

[0059] 8. Main body plate; 8-1. Lower plate; 8-2. Rotating connecting ear plate; 8-3. Lifting ear plate; 8-4. Upper plate; 8-5. Second rotating shaft ear plate; 8-5-1. Second through hole;

[0060] 9. Telescopic pole;

[0061] 10. Drive components;

[0062] 11. Guide ring; 11-1. Inner ring; 11-2. Outer ring; 11-3. Connecting plate; 11-4. Moving rod; 11-4-1. Rack; 11-5. Cylindrical gear; 11-6. Through hole; 11-7. Ring gear; 11-8. Roller; 11-9. Annular groove;

[0063] 12. Towing rope;

[0064] 13. Pulleys;

[0065] 14. Pin. Detailed Implementation

[0066] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] like Figure 1-10 As shown, this invention discloses an overall lifting device for the upper structure of a wind turbine, comprising:

[0068] A fastener is fixed to the top of the tower 1, and a pulley 13 is rotatably mounted on it;

[0069] The first shaft lug 6 is set on the nacelle 4 of the wind turbine to be lifted, and the end of it away from the nacelle 4 has a first perforation 6-1.

[0070] The main body plate 8 has a second pivot lug plate 8-5 on its top. The second pivot lug plate 8-5 has a second through hole 8-5-1. The second through hole 8-5-1 and the first through hole 6-1 are detachably connected together by a pin 14. A telescopic component is rotatably provided on one side of the main body plate 8. One end of the telescopic component is detachably connected to the cabin 4 and can push the cabin 4 to rotate around the pin 14 as the axis.

[0071] The traction rope 12 has one end connected to the main body plate 8 and the other end extends to the bottom of the tower 1 after passing over the pulley 13 at the top of the tower 1. It is used to pull the main body plate 8 to move the nacelle 4 on the tower 1. The corresponding pin 14 of the fixing component is provided with a rotating groove 3-1. After the pin 14 moves to the top of the tower 1, it is locked in the rotating groove 3-1 and rotates with it.

[0072] A guide component is fitted onto the outside of the tower 1 and connected to the main body plate 8, and is used to guide the main body plate 8 when it moves on the tower 1.

[0073] In practice, the tower 1 structure of the wind turbine is hoisted using conventional hoisting equipment. Then, the upper structure of the wind turbine is assembled on the ground (i.e., the nacelle 4, hub, and blades are assembled). The nacelle 4 is then connected to the second through hole 8-5-1 on the main plate 8 and the telescopic assembly. On the ground, the traction rope 12 is pulled by the traction device, causing the main plate 8 to move the nacelle 4 upward on the tower 1. When the main plate 8 reaches the top, the pin 14 enters the rotating slot 3-1. Then, the telescopic assembly is activated to push the nacelle 4 to rotate around the pin 14 until the nacelle 4 is rotated from a vertical position to a horizontal position and lands on the top of the tower 1. Then, workers connect the nacelle 4 to the tower 1 by bolting, completing the installation of the upper structure of the wind turbine. After installation, the pin 14 is pulled out and one end of the telescopic assembly is separated from the nacelle 4. Then, the traction rope 12 is released, and the lifting device is lowered back to the bottom of the tower 1. Then, it is disassembled and separated from the tower 1.

[0074] This application describes a method where the assembled upper structure of a wind turbine is transported to the top of the tower 1 via traction, and then the nacelle 4 is rotated using a telescopic assembly to complete the installation of the upper structure of the wind turbine. This eliminates the need for large-scale hoisting equipment, significantly reducing installation costs and eliminating the need for frequent high-altitude operations, thus ensuring high safety.

[0075] It should be noted that the traction device capable of pulling the traction rope 12 is common knowledge to those skilled in the art, such as a traction winch, so the traction device will not be described in detail here.

[0076] Preferably, for wind turbines that do not require adjustment of the blade orientation, the first shaft lug 6 can be retained for easy disassembly of the upper structure of the wind turbine later. However, for wind turbines that require adjustment of the blade orientation, there may be interference between the first shaft lug 6 and the fixing component. Therefore, the first shaft lug 6 can be removed by cutting, or the first shaft lug 6 can be detachably connected to the nacelle 4, and the first shaft lug 6 can be directly separated from the nacelle 4 later.

[0077] Preferably, in order to further ensure that the top of the nacelle 4 and the tower 1 are aligned, multiple transverse jacks (also called universal jacks, commonly used in the field of bridges to align the box girder with the pier) can be placed on the top of the tower 1. The flipped nacelle 4 can fall on the transverse jacks and be supported by them. The relative position of the nacelle 4 and the tower 1 can be adjusted by the transverse jacks. After alignment, bolts are inserted, and then the transverse jacks are removed. Then the nacelle 4 is lowered (this can be achieved by releasing the traction rope 12 to move the main plate 8 down). Finally, the pin 14 is pulled out and one end of the telescopic assembly is separated from the nacelle 4.

[0078] Preferably, the main body plate 8 is provided with a lifting ear plate 8-3, which serves as the fixed end of the traction rope 12 on this device.

[0079] In one embodiment, two first pivot lugs 6 and two second pivot lugs 8-5 are respectively provided at intervals. When the pin 14 enters the rotating slot 3-1, the first pivot lugs 6 and the second pivot lugs 8-5 are located on both sides of the rotating slot 3-1, respectively, and are adapted to the limiting position of the fixing component. This design can prevent the pin 14 from shifting in the slot when the nacelle 4 rotates, thus ensuring the relative positional accuracy between the nacelle 4 and the top of the tower 1.

[0080] In one embodiment, the telescopic assembly includes a telescopic rod 9 and a jacking auxiliary component 7. The jacking auxiliary component 7 includes a rectangular frame 7-1, which is used to support the corresponding side of the cabin 4 when the cabin 4 rotates around the pivot pin 14.

[0081] One end of the rectangular frame 7-1 is provided with a third pivot lug 7-2, on which a third through hole 7-3 is provided. The third through hole 7-3 is coaxially arranged with the second through hole 8-5-1 and connected by the pin 14. One end of the rectangular frame 7-1 is slidably provided with a socket slide rod 7-4, which can slide towards and away from the third through hole 7-3. The end of the socket slide rod 7-4 away from the rectangular frame 7-1 has a plug 7-5.

[0082] The corresponding plug 7-5 in the cabin 4 is provided with a socket 5 for mating with the plug 7-5;

[0083] One end of the telescopic rod 9 is rotatably connected to the main body plate 8, and the other end is rotatably engaged with the socket slide rod 7-4, which can drive the socket slide rod 7-4 to slide towards and away from the third through hole 7-3.

[0084] In practice, pin 14 passes through the first through hole 6-1, the second through hole 8-5-1, and the third through hole 7-3 simultaneously, connecting the main body plate 8, the jacking auxiliary component 7, and the nacelle 4. Then, the socket slide rod 7-4 slides away from the rectangular frame 7-1, inserting the plug 7-5 into the socket 5. At this time, the length of the telescopic rod 9 remains unchanged. The telescopic rod 9, the rectangular frame 7-1, and the main body plate 8 form a triangular structure, providing stable support for the nacelle 4. When the nacelle 4 rises to the top of the tower 1... The telescopic rod 9 extends, causing the cabin 4 to rotate around the pin 14. At the same time, the rectangular frame 7-1 supports the corresponding side of the cabin 4 to prevent damage to the cabin 4 due to stress concentration. After the cabin 4 is flipped into place, the telescopic rod 9 retracts, causing the socket slide rod 7-4 to slide towards the third through hole 7-3, so that the socket slide rod 7-4 exits the socket slot 5. Then the telescopic rod 9 continues to retract, and under the influence of gravity, the rectangular frame 7-1 and the telescopic rod 9 rotate downward to complete the reset.

[0085] Preferably, there are two symmetrically arranged socket slide rods 7-4, and two corresponding telescopic rods 9 are also arranged.

[0086] Preferably, there are two third shaft lugs 7-2, which are located on both sides of the rotating slot 3-1 when the pin 14 enters the rotating slot 3-1. The connection order of the first shaft, the second shaft, and the third shaft can be set arbitrarily, and there is no restriction on the connection order here.

[0087] Preferably, the telescopic rod 9 can be an electric telescopic rod 9 or a hydraulic telescopic rod 9. When the telescopic rod 9 is a hydraulic telescopic rod 9, a pump station (i.e., a hydraulic system) needs to be equipped to rise and fall together. The pump station (not shown in the figure) can be installed on the main body plate 8, or a separate mounting plate can be set on the side of the guide component away from the main body plate 8, and the pump station can be set on the mounting plate.

[0088] Preferably, the main body plate 8 is provided with a rotatable connecting ear plate 8-2 for rotatably connecting with the corresponding telescopic rod 9.

[0089] In one embodiment, the socket slide rod 7-4 is slidably inserted through one end of the rectangular frame 7-1. The rectangular frame 7-1 is provided with a transverse partition 7-6 inside. The transverse partition 7-6 is used to prevent the socket slide rod 7-4 from continuing to slide into the rectangular frame 7-1 after the plug 7-5 is removed from the socket 5.

[0090] In practice, after the socket slide rod 7-4 slides into the interior of the rectangular frame 7-1 and touches the transverse partition 7-6, the plug 7-5 has already exited the socket 5. The telescopic rod 9 continues to retract, which can drive the rectangular frame 7-1 to rotate downward and complete the reset. This avoids the socket slide rod 7-4 sliding too much into the interior of the rectangular frame 7-1 before the rectangular frame 7-1 is reset in time, which would prevent it from being reset properly.

[0091] In one embodiment, the guiding component includes two guide rings 11, which are distributed vertically on the main body plate 8 and fixedly connected to the main body plate 8. Each guide ring 11 is detachably divided into two parts for fitting onto the corresponding tower 1, and guides and limits the main body plate 8 during its vertical movement.

[0092] In one embodiment, each guide ring 11 is provided with a plurality of rollers 11-8 for contacting the cylinder wall of the tower 1.

[0093] In one embodiment, each guide ring 11 includes an inner ring 11-1 and an outer ring 11-2. The inner ring 11-1 is coaxially disposed inside the outer ring 11-2, and the inner ring 11-1 and the outer ring 11-2 are fixedly connected by a connecting plate 11-3.

[0094] It also includes multiple movable rods 11-4, which are evenly distributed on the guide ring 11 and slide along the radial direction of the guide ring 11 on the side walls of the corresponding inner ring 11-1 and outer ring 11-2. Each roller 11-8 is rotatably set at one end of the corresponding movable rod 11-4 that extends into the guide ring 11.

[0095] A rack 11-4-1 is fixedly provided on one side of each moving rod 11-4. A cylindrical gear 11-5 is rotatably provided on the guide ring 11 at the corresponding position of each rack 11-4-1. A ring gear 11-7 is also rotatably provided on the guide ring 11, meshing with each cylindrical gear 11-5. A driving component 10 is also provided on the guide ring 11 for driving and controlling the forward and reverse rotation of the ring gear 11-7 or the cylindrical gear 11-5.

[0096] In specific implementation, the driving component 10 is a motor. The motor drives the ring gear 11-7 or the cylindrical gear 11-5 to rotate, which drives each moving rod 11-4 to drive the roller 11-8 to contact the cylinder wall of the tower 1, so that the guide ring 11 and the tower 1 are aligned. At the same time, it can avoid shaking during the lifting and lowering of the main plate 8, and it can also be used for towers 1 with different diameters, which has many advantages.

[0097] The motor can be equipped with a gear at its end, which meshes with the corresponding ring gear 11-7 or cylindrical gear 11-5, driving the corresponding ring gear 11-7 or cylindrical gear 11-5 to rotate. Alternatively, the output shaft of the motor can be directly connected to one of the cylindrical gears 11-5 to drive it to rotate.

[0098] Preferably, the inner ring 11-1, the outer ring 11-2, and the corresponding annular gear 11-7 are all composed of two semicircular parts. The two semicircles of the inner ring 11-1 and the outer ring 11-2 are connected by bolts. The annular gear is located on the inner side of the outer ring 11-2, and an annular groove 11-9 is formed at the position of the annular gear on the outer ring 11-2. The annular gear and the annular groove 11-9 are rotatably engaged. A through hole 11-6 is formed below the annular groove 11-9 on the inner ring 11-1 and the outer ring 11-2 for the sliding rod 11-4 to slide through.

[0099] Preferably, the main body plate 8 is divided into upper and lower parts, with the upper plate 8-4 on top and the lower plate 8-1 on the bottom. The guide ring 11 on top is welded to the bottom of the upper plate 8-4 and the top of the lower plate 8-1 to form a whole. Of course, the main body plate 8 can also be a single piece of curved plate, which is welded to the guide ring 11.

[0100] In one embodiment, the fastener includes:

[0101] The first fastener 2 is fixed to one side of the top of the tower 1;

[0102] The second fixing member 3 is fixed on the top of the tower 1 on the opposite side of the first fixing member 2, wherein the rotating slot 3-1 is provided at the bottom of the second fixing member 3;

[0103] There are two pulleys 13, which are respectively rotatably mounted on the first fixing member 2 and the second fixing member 3;

[0104] The top of the tower 1 has a through hole (not shown in the figure) at the position corresponding to the first fixing member 2. One end of the traction rope 12 is connected to the main body plate 8, and the other end passes through the pulley 13 on the second fixing member 3 and then passes through the through hole at the top of the tower 1, extending downward from the pulley 13 on the first fixing member 2 to the bottom of the tower 1.

[0105] This design ensures that the forces on tower 1 are relatively balanced, preventing excessive stress on one side and guaranteeing the structural safety of tower 1.

[0106] Preferably, the first fixing member 2 and the second fixing member 3 can be fixed to the top of the tower 1 by welding.

[0107] The present invention also discloses a method for using a lifting device, including the above-mentioned lifting device for the overall structure of a wind turbine generator, the method comprising:

[0108] S1. Improve the structure of tower 1, install fasteners on the top of tower 1, process them as a whole and ship them to the construction site;

[0109] S2. Deepen the structure of the engine compartment 4, fix the first pivot lug 6 on the engine compartment 4, and process and ship it together with the engine compartment 4 as a whole.

[0110] S3. Install tower 1 using conventional lifting methods;

[0111] S4. Assemble the lifting device on the ground and place the guide component on the outside of the tower 1 for guidance;

[0112] S5. Insert the traction rope 12. One end of the traction rope 12 is connected to the main plate 8, and the other end passes through the pulley 13 on the fixing part and is connected to the traction device located on the ground.

[0113] S6. Assemble the upper structure of the wind turbine on the ground (that is, assemble the nacelle 4, hub and blades), and connect the nacelle 4 to the main body plate 8.

[0114] S7. Start the traction equipment to lift the engine compartment 4 into place, and then start the telescopic assembly to push the engine compartment 4 to rotate around the pin 14 as the axis;

[0115] S8. After the cabin 4 is rotated into place, the telescopic component retracts and separates from the cabin 4. The pin 14 is pulled out, and the cabin 4 separates from the main body plate 8.

[0116] S9. Lower the lifting device to the ground and dismantle it.

[0117] Preferably, the pulley 13 can be installed on the fixing member in step S1, but it is also possible to install the pulley 13 on the fixing member before step S4.

[0118] Preferably, for wind turbines that do not require adjustment of the blade orientation, the first shaft lug 6 can be retained for easy disassembly of the upper structure of the wind turbine later. For wind turbines that require adjustment of the blade orientation, there may be interference between the first shaft lug 6 and the fixing parts. Therefore, the first shaft lug 6 can be removed by cutting, or the first shaft lug 6 can be detachably connected to the nacelle 4 in the early stage, and then the first shaft lug 6 can be directly separated from the nacelle 4 later.

[0119] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0120] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0121] Additionally, "multiple" refers to two or more.

[0122] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lifting device for the overall structure of a wind turbine generator, characterized in that, include: A fastener is fixed to the top of the tower (1), and a pulley (13) is rotatably mounted on it; The first shaft lug (6) is set on the nacelle (4) of the wind turbine to be lifted, and the end of it away from the nacelle (4) has a first perforation (6-1); The main body plate (8) has a second pivot ear plate (8-5) on its top. The second pivot ear plate (8-5) has a second through hole (8-5-1). The second through hole (8-5-1) and the first through hole (6-1) are detachably connected together by a pin (14). A telescopic component is rotatably provided on one side of the main body plate (8). One end of the telescopic component is detachably connected to the cabin (4) and can push the cabin (4) to rotate around the pin (14) as the axis. A traction rope (12) is connected at one end to the main body plate (8) and at the other end extends to the bottom of the tower (1) after passing over the pulley (13) at the top of the tower (1). It is used to pull the main body plate (8) to move the nacelle (4) on the tower (1). A rotating slot (3-1) is provided at the position of the corresponding pin (14) of the fixing component. After the pin (14) moves to the top of the tower (1), it is locked in the rotating slot (3-1) and rotates with it. A guide component is fitted on the outside of the tower (1) and connected to the main body plate (8) to guide the main body plate (8) as it moves on the tower (1).

2. The integral lifting device for the upper structure of a wind turbine generator according to claim 1, characterized in that, Two of the first pivot ear plate (6) and the second pivot ear plate (8-5) are provided at intervals. When the pin (14) enters the rotating slot (3-1), the first pivot ear plate (6) and the second pivot ear plate (8-5) are located on both sides of the rotating slot (3-1) and are limited by the fixing component.

3. The integral lifting device for the upper structure of a wind turbine generator according to claim 1 or 2, characterized in that, The telescopic assembly includes a telescopic rod (9) and a jacking auxiliary component (7). The jacking auxiliary component (7) includes a rectangular frame (7-1). The rectangular frame (7-1) is used to support the corresponding side of the cabin (4) when the cabin (4) rotates around the pivot (14). One end of the rectangular frame (7-1) is provided with a third pivot ear plate (7-2), and a third through hole (7-3) is provided on the third pivot ear plate (7-2). The third through hole (7-3) is coaxially arranged with the second through hole (8-5-1) and connected by the pin (14). One end of the rectangular frame (7-1) is slidably provided with a socket slide rod (7-4). The socket slide rod (7-4) can slide towards and away from the third through hole (7-3). The end of the socket slide rod (7-4) away from the rectangular frame (7-1) has a plug (7-5). The cabin (4) is provided with a socket (5) for mating with the plug (7-5) at the corresponding plug (7-5); One end of the telescopic rod (9) is rotatably connected to the main plate (8), and the other end is rotatably engaged with the socket slide rod (7-4), which can drive the socket slide rod (7-4) to slide towards and away from the third through hole (7-3).

4. The integral lifting device for the upper structure of a wind turbine generator according to claim 3, characterized in that, The socket slide rod (7-4) is slidably inserted through one end of the rectangular frame (7-1). The rectangular frame (7-1) is provided with a transverse partition (7-6) inside. The transverse partition (7-6) is used to prevent the socket slide rod (7-4) from continuing to slide into the rectangular frame (7-1) after the plug (7-5) is removed from the socket (5).

5. The integral lifting device for the upper structure of a wind turbine generator according to claim 1 or 2, characterized in that, The guiding component includes two guide rings (11), which are distributed vertically on the main body plate (8). Each guide ring (11) is detachably divided into two parts for fitting onto the corresponding tower (1) and guiding and limiting the main body plate (8) during its vertical movement.

6. The integral lifting device for the upper structure of a wind turbine generator according to claim 5, characterized in that, Each of the guide rings (11) is provided with a plurality of rollers (11-8) for contacting the cylinder wall of the tower (1).

7. The integral lifting device for the upper structure of a wind turbine generator according to claim 6, characterized in that, Each guide ring (11) includes an inner ring (11-1) and an outer ring (11-2). The inner ring (11-1) is coaxially disposed inside the outer ring (11-2). The inner ring (11-1) and the outer ring (11-2) are fixedly connected by a connecting plate (11-3). It also includes multiple movable rods (11-4), which are evenly distributed on the guide ring (11) and slide along the radial direction of the guide ring (11) on the side walls of the corresponding inner ring (11-1) and outer ring (11-2). Each roller (11-8) is rotatably set at one end of the corresponding movable rod (11-4) extending into the guide ring (11). A rack (11-4-1) is fixedly provided on one side of each moving rod (11-4). A cylindrical gear (11-5) is rotatably provided on the guide ring (11) at the position corresponding to each rack (11-4-1). A ring gear (11-7) is also rotatably provided on the guide ring (11) to mesh with each cylindrical gear (11-5). A driving component (10) is also provided on the guide ring (11) for driving and controlling the forward and reverse rotation of the ring gear (11-7) or the cylindrical gear (11-5).

8. The integral lifting device for the upper structure of a wind turbine generator according to claim 1 or 2, characterized in that, The fastener includes: The first fastener (2) is fixed to one side of the top of the tower (1); The second fixing member (3) is fixed on the top of the tower (1) on the opposite side of the first fixing member (2), wherein the rotating slot (3-1) is provided at the bottom of the second fixing member (3); Two pulleys (13) are provided, which are respectively rotatably mounted on the first fixing member (2) and the second fixing member (3); The top of the tower (1) is provided with through holes at the positions corresponding to the first fixing member (2) and the first fixing member (2). One end of the traction rope (12) is connected to the main body plate (8), and the other end passes through the pulley (13) on the second fixing member (3) and then passes through the through hole at the top of the tower (1) and extends downward from the pulley (13) on the first fixing member (2) to the bottom of the tower (1).

9. A method of using a lifting device, characterized in that, The method comprising the integral lifting device for the superstructure of a wind turbine as described in any one of claims 1-8, wherein the method comprises: S1. Install fasteners on the top tower (1); S2. Fix the first pivot lug (6) onto the cabin (4); S3. Install the tower (1); S4. Assemble the lifting device on the ground and place the guide component on the outside of the tower (1) for guidance; S5. Insert the traction rope (12). One end of the traction rope (12) is connected to the main plate (8), and the other end passes through the pulley (13) on the fixing part and is connected to the traction device located on the ground. S6. Assemble the upper structure of the wind turbine on the ground and connect the nacelle (4) to the main body plate (8); S7. Start the traction equipment to lift the engine compartment (4) into place, and then start the telescopic assembly to push the engine compartment (4) to rotate around the pin (14) as the axis; S8. After the cabin (4) rotates into place, the telescopic assembly retracts and separates from the cabin (4), and the pin (14) is pulled out, and the cabin (4) separates from the main body plate (8). S9. Lower the lifting device to the ground and dismantle it.

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