Device and method for replacing parts of wind driven generator

Abstract

The invention relates to the technical field of wind power generation, and discloses a component replacement device and method of a wind driven generator, the component replacement device of the wind driven generator comprises a hoisting structure, the hoisting structure is provided with a hoisting point and a mounting structure, and the hoisting structure is used for being fixedly mounted in a cabin of the wind driven generator through the mounting structure; the replacement platform is provided with a lifting device, the lifting device is connected with the lifting point so that the replacement platform can be lifted through the lifting device, and the lifting device is used for being connected with a part of the wind driven generator through the lifting point so that the part can be lifted through the lifting device; and the fixed connecting structure is used for fixedly connecting the replacement platform with the hoisting structure when the lifting device lifts the replacement platform to a first preset position. The wind driven generator has the beneficial effects that an operator can replace parts of the wind driven generator conveniently, and the operation and maintenance cost of the wind driven generator can be reduced.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and in particular to a component replacement device and method for a wind turbine. Background Technology

[0002] The reliability of components inside the wind turbine nacelle, especially larger components such as the power generation unit and gearbox, has a significant impact on the safety of the unit. Once a failure occurs, maintenance and replacement are extremely difficult, and the downtime is usually long due to weather and hydrological conditions.

[0003] In related technologies, when replacing components, a whole-machine disassembly and replacement approach is adopted. This involves disassembling the entire nacelle of the wind turbine and placing it on an assembly platform. After the damaged components are repaired or replaced, the entire nacelle is then reassembled in its original position. Due to the large size and weight of the nacelle, this maintenance method typically requires the use of large lifting vessels or cranes to lift the entire nacelle. However, the availability of such large lifting vessels or cranes is limited, making them difficult to source and expensive. The long replacement waiting period leads to significant power generation losses and high maintenance costs. Furthermore, lifting and replacing the entire nacelle involves complex processes and is inconvenient for operators, increasing the difficulty of the operation. Summary of the Invention

[0004] The purpose of this application is to provide a component replacement device and method for wind turbines, which facilitates the replacement of wind turbine components by operators and reduces the operation and maintenance costs of wind turbines.

[0005] To address the aforementioned technical problems, this application provides the following technical solutions: In a first aspect, this application proposes a component replacement device for a wind turbine, comprising: A hoisting structure is provided with hoisting points and an installation structure. The hoisting structure is used to fix the wind turbine inside the nacelle via the installation structure. The replacement platform is equipped with a lifting device, which is connected to the lifting point to lift the replacement platform. The lifting device is also used to connect to components of the wind turbine generator via the lifting point to hoist the components. A fixed connection structure is provided, which is used to fix the replacement platform to the hoisting structure when the lifting device raises the replacement platform to a first preset position.

[0006] Optionally, the lifting device includes a winch and a winding system. The winch's rope is connected to the lifting point via the winding system, so as to lift the replacement platform to the first preset position by the operation of the winch and the winding system; and the winch's rope is connected to the components of the wind turbine via the winding system and the lifting point, so as to hoist the components by the operation of the winch and the winding system.

[0007] Optionally, the replacement platform includes a frame structure with a hoisting opening in the middle, and the winch and the winding system are distributed around the outer periphery of the frame structure.

[0008] Optionally, the fixed connection structure includes a pin mechanism, which is disposed at the replacement platform or the hoisting structure.

[0009] Secondly, this application proposes a method for replacing components of a wind turbine, including: The hoisting structure is hoisted into the nacelle of the wind turbine, and then fixedly installed in the nacelle using the installation structure of the hoisting structure. Remove the bottom cover of the cabin and lower it onto the component platform; The replacement platform is raised to a first preset position by changing the lifting device of the platform, and the replacement platform is fixedly connected to the hoisting structure by a fixed connection structure. Based on the lifting points of the hoisting structure, the components of the wind turbine are hoisted downward from the nacelle to the component platform via a lifting device, or the components are hoisted upward from the component platform to the nacelle.

[0010] Optionally, before hoisting the component downward from the cabin to the component platform via the lifting device, or hoisting the component upward from the component platform to the cabin, the method further includes: The nacelle is rotated around the tower of the wind turbine to move the hoisting structure and the replacement platform to the position corresponding to the component platform.

[0011] Optionally, the step of hoisting the component from the cabin to the component platform using a lifting device further includes: The component inside the cabin is connected to the hoisting structure via the lifting point, and the component's attitude is adjusted to the lowered position.

[0012] Optionally, the process of connecting the component inside the cabin to the hoisting structure based on the hoisting points of the hoisting structure, and adjusting the attitude of the component to a lowered position, includes: The lifting points of the hoisting structure are connected to multiple parts of the component, and the component is held in a position opposite to the hoisting port of the frame structure in the replacement platform; The process of hoisting the component from the cabin to the component platform using a lifting device includes: The component is lifted from inside the cabin to the component platform via the lifting device through the hoisting port.

[0013] Optionally, removing the bottom fuselage cover of the nacelle and lowering the bottom fuselage cover onto the component platform includes: The bottom cover is connected to the hoisting structure via the hoisting points, and the bottom cover is lowered to the component platform via the hoisting structure.

[0014] Optionally, the process of lifting the hoisting structure into the nacelle of the wind turbine includes: The hoisting structure is lifted into the nacelle of the wind turbine using a crane inside the wind turbine.

[0015] The component replacement device for a wind turbine in this embodiment includes a hoisting structure, a replacement platform, and a fixed connection structure. The hoisting structure is installed inside the wind turbine and has lifting points to connect to the replacement platform. The replacement platform has a lifting device to enable self-lifting. After being lifted to the top, it is fixed to the hoisting structure via the fixed connection structure. This allows for stable connection of wind turbine components based on the hoisting structure and replacement platform within the wind turbine nacelle. The subsequent lifting device connects to the wind turbine components via lifting points, allowing for upward / downward lifting of only the components. This eliminates the need for large lifting vessels or cranes, reducing the complexity of component replacement. The waiting period is shortened, reducing power generation loss and corresponding operation and maintenance costs. It also eliminates the need for hoisting the entire nacelle, making it easier for operators and reducing their operational difficulty. The hoisting structure and replacement platform form a whole at the nacelle, ensuring that the yaw (rotation) function of the wind turbine is not affected by the ropes during the replacement. Furthermore, by rotating the nacelle, the hoisting structure and replacement platform can move as a whole, facilitating alignment with the ship or ground platform below and enabling better hoisting. The replacement platform rises to a position near the hoisting structure, saving on working ropes when hoisting internal components of the nacelle. Attached Figure Description

[0016] Figure 1 A schematic diagram of a component replacement device for a wind turbine provided in an embodiment of this application during the replacement of the power generation device; Figure 2 This is a schematic diagram of the structure of a component replacement device for a wind turbine provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a replacement platform for a component replacement device of a wind turbine provided in an embodiment of this application; Figure 4 This is a schematic flowchart of a method for replacing components of a wind turbine provided in an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures: 1. Lifting structure; 101. Lifting point; 2. Replacement platform; 201. Winch; 202. Winding system; 203. Frame structure; 204. Electrical control system; 3. Fixed connection structure; 4. Cabin; 401. Bottom cover; 5. Tower; 6. Components; 7. Ropes. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this application to facilitate a better understanding of the application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0019] Furthermore, it should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in its actual use or operation, specifically the directions shown in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0020] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In related technologies, when replacing components, a whole-machine disassembly and replacement approach is adopted. This involves disassembling the entire nacelle of the wind turbine and placing it on an assembly platform. After the damaged components are repaired or replaced, the entire nacelle is then reassembled in its original position. Due to the large size and weight of the nacelle, this maintenance method typically requires the use of large lifting vessels or cranes to lift the entire nacelle. However, the availability of such large lifting vessels or cranes is limited, making them difficult to source and expensive. The long replacement waiting period leads to significant power generation losses and high maintenance costs. Furthermore, lifting and replacing the entire nacelle involves complex processes and is inconvenient for operators, increasing the difficulty of the operation.

[0022] In view of this, refer to Figure 1 and Figure 2 As shown, this application provides a component replacement device for a wind turbine generator. Figure 1 This is a schematic diagram illustrating a component replacement device for a wind turbine generator according to an embodiment of this application, during the replacement of the power generation device. Figure 2 This is a schematic diagram of a component replacement device for a wind turbine according to an embodiment of this application. The component replacement device for the wind turbine includes: a hoisting structure 1, which is provided with a hoisting point 101 and an installation structure, and is used to fix the hoisting structure 1 to the nacelle 4 of the wind turbine through the installation structure; a replacement platform 2, which is provided with a lifting device, which is connected to the hoisting point 101 to lift and lower the replacement platform 2, and is used to connect to a component 6 of the wind turbine through the hoisting point 101 to hoist the component 6; and a fixed connection structure 3, which is used to fix the replacement platform 2 to the hoisting structure 1 when the lifting device lifts the replacement platform 2 to a first preset position.

[0023] In one embodiment of this application, the hoisting structure 1 can be a support frame on which an installation structure is provided for pre-installation inside the nacelle 4 of the wind turbine. Specifically, multiple fixed beams can be provided inside the nacelle 4, and bolt holes are provided at the fixed beams. The support frame includes multiple columns and multiple horizontal and vertical beams provided on the columns. The corresponding positions on these beams or columns are provided with the installation structure (not shown in the figure) corresponding to the bolt holes inside the nacelle 4. For example, bolt holes are provided to securely fix the hoisting structure 1 to the inside of the nacelle 4 of the wind turbine using bolts and other connecting parts. The hoisting structure 1 is stably installed inside the nacelle 4 to provide stable support when hoisting the components 6 of the wind turbine later.

[0024] In this embodiment, a lifting point 101 is provided at the lifting structure 1, so that other structures can be connected to the lifting point 101 via ropes 7 to achieve stable lifting. The lifting point 101 in this application embodiment can be a pulley assembly, such as a pulley assembly including movable pulleys or fixed pulleys, so as to connect to the lifting device of the wind turbine component 6 or the replacement platform 2 via ropes 7.

[0025] The component replacement device for the wind turbine also includes a replacement platform 2, which is equipped with a lifting device. During installation of the replacement device, the lifting device is connected to the lifting point 101 at the hoisting structure 1, and the replacement platform 2 is raised and lowered based on the operation of the lifting device. In an optional embodiment, the replacement platform 2, including the lifting device as a whole, can be raised and lowered based on the self-lifting or downward movement of the lifting device. It is understood that the lifting device can be connected to the lifting point 101 via a rope 7, thereby achieving the raising and lowering of the replacement platform 2 through the traction of the rope 7.

[0026] In addition, since a hoisting structure 1 is installed inside the cabin 4, the hoisting structure 1 can be connected to the components 6 inside the cabin 4 via hoisting points 101, for example... Figure 1 The generator is connected to the power generation device inside the cabin 4, thereby lifting or lowering the component 6 through the lifting point 101 via the lifting device to achieve hoisting.

[0027] The component replacement device for the wind turbine also includes a fixed connection structure 3 for connecting and fixing the hoisting structure 1 and the replacement platform 2 to form a stable structure. Specifically, when the lifting device raises the replacement platform 2 to a first preset position, such as the lower part of the hoisting structure 1, it is connected and fixed based on the fixed connection structure 3. When it is necessary to disassemble the replacement platform 2, the replacement platform 2 and the hoisting structure 1 can be separated by disassembling or opening the fixed connection structure 3.

[0028] In an optional embodiment of this application, the fixed connection structure 3 can be a pin mechanism. The pin mechanism can be set at the replacement platform 2 or the hoisting structure 1. For example, it can be set at the hoisting structure 1, and the corresponding replacement platform 2 is provided with a pin hole that cooperates with the pin mechanism. In this way, when the replacement platform 2 moves to the position corresponding to the hoisting structure 1, the replacement platform 2 and the hoisting structure 1 can be assembled by the cooperation of the pin mechanism and the pin hole. When disassembling, the replacement platform 2 and the hoisting structure 1 can be separated by opening the pin mechanism.

[0029] In an optional embodiment, the pinning mechanism is an automatic pinning mechanism. When the replacement platform 2 moves to the position corresponding to the hoisting structure 1, the automatic pinning mechanism automatically inserts the pin to achieve assembly. During disassembly, it can automatically open to complete separation.

[0030] In other embodiments, the fixed connection structure 3 may be provided with pin holes or bolt holes on the hoisting structure 1 and the replacement platform 2, and disassembly and assembly may be achieved by bolts.

[0031] Therefore, the component replacement device for the wind turbine of this application has a hoisting structure 1, a replacement platform 2, and a fixed connection structure 3. The hoisting structure 1 is installed inside the wind turbine and has a hoisting point 101 to connect to the replacement platform 2. The replacement platform 2 has a lifting device to realize the self-lifting of the replacement platform 2. After being lifted to the top, it is fixed to the hoisting structure 1 through the fixed connection structure 3. Based on the nacelle 4 of the wind turbine, the hoisting structure 1 and the replacement platform 2 are set to stably connect the components 6 of the wind turbine. Subsequently, the lifting device is connected to the components 6 of the wind turbine through the hoisting point 101. Only the components 6 are hoisted upwards / downwards, without relying on large hoisting vessels or large cranes, thus reducing the cost of the components. The waiting period during component 6 replacement reduces power generation loss and corresponding operation and maintenance costs. It also eliminates the need for hoisting the entire nacelle 4, making it easier for operators and reducing their operational difficulty. The hoisting structure 1 and the replacement platform 2 form a whole at the nacelle 4. During the replacement, the yaw (rotation) function of the wind turbine will not be affected by the rope 7. Furthermore, by rotating the nacelle 4, the hoisting structure 1 and the replacement platform 2 can be moved as a whole, making it easier to align with the ship or ground platform below, thus facilitating better hoisting. The replacement platform 2 rises to the position of the hoisting structure 1, which is adjacent to the nacelle 4. When hoisting the internal components 6 of the nacelle 4, the working rope 7 can be saved.

[0032] In an optional embodiment of this application, the lifting device includes a winch 201 and a winding system 202. The rope 7 of the winch 201 is connected to the lifting point 101 via the winding system 202, so as to lift the replacement platform 2 to the first preset position by the operation of the winch 201 and the winding system 202, or to lower the replacement platform 2 to the ground platform when disassembling it; and the rope 7 of the winch 201 is connected to the component 6 of the wind turbine generator via the winding system 202 and the lifting point 101, so as to hoist the component 6 by the operation of the winch 201 and the winding system.

[0033] Reference Figure 3As shown, in this embodiment, the replacement platform 2 may include multiple winches 201 and a winding system 202. The rope 7 exits from the rope exit mechanism of the winch 201 and is then connected to the lifting point 101 of the hoisting structure 1 via the winding system 202. This drives the winch 201 to achieve self-lifting or self-lowering of the replacement platform 2 through the traction of the rope 7. When lifted to a first preset position, such as the lower part of the hoisting structure 1 close to it, the hoisting structure 1 and the replacement platform 2 are connected and fixed by the fixed connection structure 3 to form a stable structure. After the hoisting structure 1 and the replacement platform 2 are connected, the rope 7 of the winch 201 can be connected to the component 6 of the wind turbine generator via the winding system 202 and the lifting point 101. The winch 201 then drives the rope 7 to move, allowing the component 6 to be lowered or raised.

[0034] Reference Figure 3 As shown, in an optional embodiment of this application, the replacement platform 2 further includes an electrical control system 204, which is connected to the winch 201 and the winding system 202. The electrical control system 204 can control the operation of the winch 201 and the winding system 202. Furthermore, the user can remotely connect to the electrical control system 204 through the device to achieve remote control, which facilitates hoisting operations and improves operational safety.

[0035] In an optional embodiment of this application, the replacement platform 2 includes a frame structure 203, a hoisting opening is formed in the middle of the frame structure 203, and the winch 201 and the winding system 202 are distributed on the outer periphery of the frame structure 203.

[0036] Reference Figure 3 As shown, in this embodiment, the replacement platform 2 includes a rectangular frame structure 203, multiple winches 201 and winding systems 202 distributed around the outer periphery of the frame structure 203, so that the overall center of gravity of the replacement platform 2 is located in the middle, facilitating stable self-lifting and lowering of the replacement platform 2. A hoisting opening is formed in the middle of the frame structure 203 so that the component 6 of the wind turbine can pass through the hoisting opening during hoisting. The aforementioned automatic pin mechanism can be installed on the outer periphery of the frame structure 203 to achieve a fixed connection between the replacement platform 2 and the hoisting structure 1.

[0037] Anti-slip pedals, safety anchors, and protective nets can be installed on the frame structure 203 to facilitate workers to perform operations on the platform 2.

[0038] Reference Figure 1 and Figure 4 As shown, this application also provides a method for replacing components of a wind turbine. Based on the aforementioned component replacement device for a wind turbine, the method includes the following steps: Step 100: Hoist the hoisting structure 1 into the nacelle 4 of the wind turbine, and fix the hoisting structure 1 into the nacelle 4 using the installation structure of the hoisting structure 1.

[0039] This application does not limit the installation of the hoisting structure 1 inside the nacelle 4 to the replacement of component 6 of the wind turbine. The hoisting structure 1 can also be installed inside the nacelle 4 of the wind turbine in advance, such as when the nacelle 4 is being installed as a whole on the tower 5. The hoisting structure 1 has certain dimensions. It can be installed inside the nacelle 4 by disassembling the hoisting structure 1 and assembling it inside the nacelle 4 using installation structures such as bolt holes. Alternatively, the hoisting structure 1 can be installed on the ground and then hoisted into the nacelle 4 by a crane. The hoisting of the hoisting structure 1 can be carried out by a large crane, or, because the overall weight of the hoisting structure 1 is relatively small, it can be transported to the nacelle 4 of the wind turbine by a crane inside the wind turbine, making the hoisting process more convenient and saving the cost of using a large crane.

[0040] Step 200: Remove the bottom cover 401 of the cabin 4 and lower the bottom cover 401 to the component platform.

[0041] The component platform can be an offshore platform or a land platform, such as the deck of a maintenance vessel or the relevant ground area.

[0042] In this embodiment, the hoisting structure 1 is pre-installed inside the nacelle 4. Therefore, when the wind turbine needs to replace the component 6, the bottom cover 401 is first removed and lowered to the component platform to form an opening in the nacelle 4, which facilitates the subsequent docking and installation of the replacement platform 2 with the hoisting structure 1 inside the nacelle 4, as well as the hoisting of the component 6 inside the nacelle 4.

[0043] In an optional embodiment of this application, the bottom cover 401 is connected to the hoisting structure 1 via the hoisting point 101, and the bottom cover 401 is lowered to the component platform via the hoisting structure 1 to facilitate operation by workers without the need for an external crane.

[0044] Step 300: The replacement platform 2 is raised to a first preset position by means of the lifting device of the replacement platform 2, and the replacement platform 2 is fixedly connected to the hoisting structure 1 by means of the fixed connection structure 3.

[0045] The lifting device will raise the replacement platform 2 to the first preset position, such as when the lower part of the hoisting structure 1 is being installed, and then it will be fixed based on the fixed connection structure 3.

[0046] The lifting device may include a winch 201 and a winding system 202. The replacement platform 2 is lifted by the traction of the rope 7 driven by the winch 201 and the winding system 202. The fixed connection structure 3 may include a pin mechanism, such as an automatic pin mechanism, to connect and fix the hoisting structure 1 and the replacement platform 2. The pin mechanism may be provided on the hoisting structure 1 or the replacement platform 2, and the other may be provided in a structure that cooperates with the pin mechanism, such as a pin hole.

[0047] Step 400: Based on the lifting point 101 of the hoisting structure 1, the component 6 of the wind turbine generator is hoisted downward from the nacelle 4 to the component platform, or the component 6 is hoisted upward from the component platform to the nacelle 4 using a lifting device.

[0048] A lifting point 101 is provided at the hoisting structure 1, so that the lifting device of the replacement platform 2 can be connected to the lifting point 101 via rope 7, thereby realizing the connection of the wind turbine component 6. In this embodiment, the lifting point 101 can be a pulley assembly, such as a pulley assembly including movable pulleys or fixed pulleys, so as to realize the connection with the wind turbine component 6 or the lifting device of the hoisting platform via rope 7. Thus, by controlling the lifting device, the component 6 can be hoisted from inside the nacelle 4 to the component platform. Subsequently, the personnel at the component platform can perform maintenance or replacement of the component 6. Correspondingly, when the component 6 needs to be installed, the lifting device is controlled to hoist the component 6 from the component platform into the nacelle 4, and then the installation is carried out inside the nacelle 4. After installation, the replacement platform 2 is lowered to the component platform via the lifting device, disassembled, and then the bottom cover 401 is installed, realizing the entire process of replacing the wind turbine component 6.

[0049] Therefore, the method for replacing component 6 of the wind turbine in this application involves installing the hoisting structure 1 inside the wind turbine to form a hoisting point 101 to connect to the replacement platform 2. The replacement platform 2 has a lifting device to achieve self-lifting. After being lifted to the top, it is fixed to the hoisting structure 1 through a fixed connection structure 3. Based on the nacelle 4 of the wind turbine, the hoisting structure 1 and the replacement platform 2 are set up to stably connect the component 6 of the wind turbine. Subsequently, the lifting device is connected to the component 6 of the wind turbine through the hoisting point 101. Only the component 6 is hoisted upwards / downwards, without relying on large hoisting vessels or large cranes. This reduces the waiting period when replacing component 6, reduces power generation loss and corresponding operation and maintenance costs, and eliminates the need to hoist the entire nacelle 4, making it easier for operators to operate and reducing the difficulty of operation. The replacement platform 2 and the hoisting structure 1 are installed together and the nacelle 4 is rotated, which enables the overall movement of the hoisting structure 1 and the replacement platform 2. This facilitates the alignment with the ship or ground platform below, thereby facilitating better hoisting. During the replacement of component 6, the yaw (rotation) function of the wind turbine will not be affected by the rope 7. The replacement platform 2 rises to the position of the hoisting structure 1, which is adjacent to the nacelle 4. When hoisting component 6 inside the nacelle 4, the working rope 7 can be saved.

[0050] In an optional embodiment of this application, before hoisting the component 6 downward from the cabin 4 to the component platform via the lifting device, or hoisting the component 6 upward from the component platform to the cabin 4, the method further includes: The nacelle 4 is rotated around the tower 5 of the wind turbine to move the hoisting structure 1 and the replacement platform 2 to the position corresponding to the component platform.

[0051] In this embodiment, the nacelle 4 is mounted on the tower 5 and can rotate around the tower 5 to achieve the yaw function of the wind turbine. When hoisting the component 6, it is not necessary to directly align the position of the ground platform below with the hoisting structure 1 inside the nacelle 4 above. Instead, the nacelle 4 only needs to rotate around the tower 5 of the wind turbine to actively align the upper hoisting structure 1 and the replacement platform 2 with the lowered component platform. For example, in offshore operations, it is not convenient for the maintenance vessel to make precise position adjustments. Therefore, the positions of the hoisting structure 1 and the replacement platform 2 are actively adjusted to facilitate the precise hoisting of the component 6.

[0052] In an optional embodiment of this application, before hoisting the component 6 from the cabin 4 to the component platform using a lifting device, the method further includes: The component 6 inside the cabin 4 is connected to the hoisting structure 1 via the hoisting point 101, and the attitude of the component 6 is adjusted to the lowered position.

[0053] In this embodiment, before hoisting component 6 downwards, component 6 can be connected to the cabin 4 through the hoisting point 101 of the hoisting structure 1 to achieve stable support for component 6 and adjust the attitude of component 6 to the lowering position, thereby facilitating the stable lowering of component 6 and making it convenient for subsequent ground personnel to carry out operations.

[0054] In an optional embodiment of this application, connecting the component 6 inside the cabin 4 to the hoisting structure 1 based on the hoisting point 101 of the hoisting structure 1, and adjusting the attitude of the component 6 to the lowered position, includes: The multiple lifting points 101 of the lifting structure 1 are connected to multiple parts of the component 6, and the component 6 is held in a position opposite to the lifting port of the frame structure 203 in the replacement platform 2; The process of hoisting component 6 from inside the cabin 4 to the component platform using a lifting device includes: The component 6 is hoisted from inside the cabin 4 to the component platform via the lifting device through the hoisting port.

[0055] In this embodiment, the replacement platform 2 includes a frame structure 203, with a hoisting opening formed in the middle of the frame structure 203. The hoisting opening corresponds to the corresponding area of ​​the component platform on the ground. When the hoisting structure 1 is connected and fixed to the component 6, the hoisting structure 1 provides multiple hoisting points 101 to connect with the component 6, thereby keeping the component 6 in a position opposite to the hoisting opening. Subsequently, when the component 6 is hoisted downwards, by passing the component 6 through the hoisting opening downwards, the component 6 can be accurately hoisted downwards to the corresponding position on the component platform, thereby facilitating subsequent operations by the operators.

[0056] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing this application, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of this application.

Claims

1. A component replacement device for a wind turbine generator, characterized in that, include: A hoisting structure is provided with hoisting points and an installation structure. The hoisting structure is used to fix the wind turbine inside the nacelle via the installation structure. The replacement platform is equipped with a lifting device, which is connected to the lifting point to lift the replacement platform. The lifting device is also used to connect to components of the wind turbine generator via the lifting point to hoist the components. A fixed connection structure is provided, which is used to fix the replacement platform to the hoisting structure when the lifting device raises the replacement platform to a first preset position.

2. The component replacement device for a wind turbine generator according to claim 1, characterized in that, The lifting device includes a winch and a winding system. The rope of the winch is connected to the lifting point through the winding system, so that the replacement platform can be lifted to the first preset position by the operation of the winch and the winding system. The winch rope passes through the winding system and the lifting point to connect with the components of the wind turbine, so as to lift the components by operating the winch and the winding system.

3. The component replacement device for a wind turbine generator according to claim 2, characterized in that, The replacement platform includes a frame structure with a hoisting opening in the middle, and the winch and the winding system are distributed around the outer periphery of the frame structure.

4. The component replacement device for a wind turbine generator according to any one of claims 1-3, characterized in that, The fixed connection structure includes a pin mechanism, which is located at the replacement platform or the hoisting structure.

5. A method for replacing components in a wind turbine, characterized in that, include: The hoisting structure is hoisted into the nacelle of the wind turbine, and then fixedly installed in the nacelle using the installation structure of the hoisting structure. Remove the bottom cover of the cabin and lower it onto the component platform; The replacement platform is raised to a first preset position by changing the lifting device of the platform, and the replacement platform is fixedly connected to the hoisting structure by a fixed connection structure. Based on the lifting points of the hoisting structure, the components of the wind turbine are hoisted downward from the nacelle to the component platform via a lifting device, or the components are hoisted upward from the component platform to the nacelle.

6. The method for replacing components of a wind turbine according to claim 5, characterized in that, Before hoisting the component downward from the cabin to the component platform via a lifting device, or hoisting the component upward from the component platform to the cabin, the method further includes: The nacelle is rotated around the tower of the wind turbine to move the hoisting structure and the replacement platform to the position corresponding to the component platform.

7. The method for replacing components of a wind turbine according to claim 5, characterized in that, Before hoisting the component from the cabin to the component platform using a lifting device, the process further includes: The component inside the cabin is connected to the hoisting structure via the lifting point, and the component's attitude is adjusted to the lowered position.

8. The method for replacing components of a wind turbine according to claim 7, characterized in that, The lifting points based on the hoisting structure connect the components inside the cabin to the hoisting structure, and adjust the attitude of the components to the lowered position, including: The lifting points of the hoisting structure are connected to multiple parts of the component, and the component is held in a position opposite to the hoisting port of the frame structure in the replacement platform; The process of hoisting the component from the cabin to the component platform using a lifting device includes: The component is lifted from inside the cabin to the component platform via the lifting device through the hoisting port.

9. The method for replacing components of a wind turbine according to claim 5, characterized in that, The removal of the bottom fuselage cover and lowering it onto the component platform includes: The bottom cover is connected to the hoisting structure via the hoisting points, and the bottom cover is lowered to the component platform via the hoisting structure.

10. The method for replacing components of a wind turbine according to any one of claims 5-9, characterized in that, The process of hoisting the lifting structure into the nacelle of the wind turbine includes: The hoisting structure is lifted into the nacelle of the wind turbine using a crane inside the wind turbine.

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