Process and system for replacing large components of fan

Abstract

The invention relates to the technical field of wind driven generators, and discloses a process and a system for replacing large components of a fan. In the application, the fan comprises a fan hub, a fan tower drum, a fan cabin and a fan large component, and the fan large component replacement process comprises the following steps: mounting a hub crane on the fan hub, and mounting a tower crane lifting beam at a specified position at the top of the fan cabin by utilizing the hub crane; assembling a lifting operation platform comprising a tower crane main body, a crawling system and a lifting system on a bottom platform of the fan tower drum; the lifting operation platform is lifted to the designated position of the side edge of the fan cabin through a lifting system and a tower crane lifting beam; through the crawling system and the tower crane lifting beam, the tower crane body is transported to the top designated position of the fan cabin from the side designated position of the fan cabin; and through a preset rigid connection mode, the tower crane main body is fixed to the designated position of the top of the fan cabin, and the fixed tower crane main body is used for replacing large components of the fan.

Description

Technical Field

[0001] This application relates to the field of wind turbine technology, and in particular to a process and system for replacing major components of a wind turbine. Background Technology

[0002] To improve the wind energy capture efficiency of wind turbines, there is a current trend of increasing the single-unit capacity of wind turbines and continuously raising the tower height. However, while increasing the tower height can increase power generation, it will cause the unit to operate in a more complex wind environment. In addition, engineers currently lack design experience for large units, which puts the reliability of large components to the test and increases the failure rate. Therefore, the need for replacement of large components has become more frequent and urgent.

[0003] Replacing large components is inherently challenging. Replacing wind turbine components exceeding 100 meters in height requires ultra-large specialized hoisting equipment, which is scarce globally and difficult to dispatch. Even if such equipment can be located, the long transportation distances and complex assembly / disassembly processes result in extremely high deployment costs. Furthermore, the complete interruption of power generation during the long downtime period—while waiting for the equipment and the actual replacement—leads to significant power loss. These high hoisting costs and power losses collectively increase the overall cost of a single replacement, severely impacting the economic viability and availability of wind turbine units.

[0004] Currently, the traditional replacement model, which relies on large external hoisting resources, is no longer suitable for the high-efficiency, fast, and economical requirements of large wind turbine components. Summary of the Invention

[0005] The purpose of this application is to provide a process and system for replacing large components of wind turbines, which can solve the technical problems in the related art, such as the high cost and long replacement time of large components of wind turbines due to the reliance on large external hoisting resources and the limited availability of large crane resources.

[0006] To address the aforementioned technical problems, this application provides a process for replacing major components of a wind turbine. The wind turbine includes a hub, a tower, a nacelle, and other major components. The process includes the following steps: installing a hub crane on the hub and using the hub crane to install a tower crane lifting beam at a designated position on the top of the nacelle; assembling a lifting platform comprising a tower crane body, a crawling system, and a lifting system on the bottom platform of the tower; lifting the lifting platform to a designated position on the side of the nacelle using the lifting system and the tower crane lifting beam; transporting the tower crane body from the designated position on the side of the nacelle to a designated position on the top of the nacelle using the crawling system and the tower crane lifting beam; fixing the tower crane body to the top of the nacelle using a pre-defined rigid connection method, and using the fixed tower crane body to perform the replacement of the major components.

[0007] This application also provides a wind turbine major component replacement system. The wind turbine includes a wind turbine hub, a wind turbine tower, a wind turbine nacelle, and major wind turbine components. The system includes: a hub crane configured to be mounted on the wind turbine hub; a tower crane lifting beam configured to be installed at a designated position on the top of the wind turbine nacelle via the hub crane; and a lifting platform configured to be assembled on the bottom platform of the wind turbine tower. The lifting platform includes a tower crane body, a crawling system, and a lifting system. The lifting system is configured to cooperate with the tower crane lifting beam to lift the lifting platform to a designated position on the side of the wind turbine nacelle. The crawling system is configured to cooperate with the tower crane lifting beam to transport the tower crane body from the designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle. The tower crane body is configured to be fixed to the designated position on the top of the wind turbine nacelle via a preset rigid connection method, and to perform the replacement operation of the major wind turbine components.

[0008] In this embodiment, the wind turbine includes a wind turbine hub, a wind turbine tower, a wind turbine nacelle, and major wind turbine components. The replacement process for the major wind turbine components includes: installing a tower crane lifting beam at a designated position on the top of the wind turbine nacelle using a hub crane on the wind turbine hub; assembling a lifting platform, including a tower crane body, a crawling system, and a lifting system, on the bottom platform of the wind turbine tower; lifting the lifting platform to a designated position on the side of the wind turbine nacelle using the lifting system and the tower crane lifting beam; transporting the tower crane body from the designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle using the crawling system and the tower crane lifting beam; fixing the tower crane body to the designated position on the top of the wind turbine nacelle using a preset rigid connection method, and using the fixed tower crane body to perform the replacement operation of the major wind turbine components. This application utilizes the cooperation between a hub crane, a tower crane lifting beam, and a lifting platform comprising the tower crane body, a crawling system, and a lifting system to complete the assembly of the tower crane body used for replacing major wind turbine components. The entire assembly process does not require large external hoisting resources. It eliminates the need for long queues for specific large external hoisting resources, directly removing the high rental fees, long-distance relocation and transportation costs, and complex on-site assembly costs associated with large external hoisting resources. This allows the application to reduce the cost of replacing major wind turbine components, quickly initiate replacement operations, and minimize power generation losses due to wind turbine downtime.

[0009] Furthermore, the installation of the hub crane on the wind turbine hub includes: installing the hub crane, which has self-lifting and self-installation functions, at a designated installation position on the wind turbine hub via a rigid connection. The hub crane of this application does not require a large external crane for installation; it can achieve high-altitude installation by relying on its self-lifting and self-installation functions.

[0010] Furthermore, the assembly of the hoisting work platform, comprising the tower crane body, crawling system, and lifting system, on the bottom platform of the wind turbine tower includes: assembling the hoisting work platform on the bottom platform of the wind turbine tower using a truck crane; assembling the tower crane body on the hoisting work platform; and installing the crawling system and the lifting system on the hoisting work platform. The tower crane body, crawling system, lifting system, and hoisting work platform of this application are all assembled at the bottom platform of the wind turbine tower, which greatly improves the safety and efficiency of the assembly process while ensuring assembly quality, and also reduces the number of personnel and time spent on high-altitude operations.

[0011] Furthermore, the tower crane lifting beam includes a pulley structure, and the lifting system includes a hydraulic winch. The step of lifting the lifting platform to a designated position on the side of the wind turbine nacelle using the lifting system and the tower crane lifting beam includes: utilizing the hydraulic winch of the lifting system and the pulley structure of the tower crane lifting beam to lift the lifting platform to the designated position on the side of the wind turbine nacelle. This application can lift the lifting platform, including the tower crane main unit, to a designated position through the cooperation of the hydraulic winch and the pulley structure, thus avoiding reliance on external large crane resources during the replacement of large wind turbine components.

[0012] Furthermore, the tower crane lifting beam includes a crawling guide rail structure, and the crawling system is a hydraulic stepping crawling system. The process of transporting the tower crane body from a designated side position to a designated top position of the wind turbine nacelle using the crawling system and the tower crane lifting beam includes: utilizing the hydraulic stepping crawling system and the crawling guide rail structure of the tower crane lifting beam to transport the tower crane body from a designated side position to a designated top position of the wind turbine nacelle. This application, through the cooperation of the crawling guide rail structure and the hydraulic stepping crawling system, can transport the tower crane main unit to a designated location, avoiding reliance on external large crane resources during the replacement of major wind turbine components.

[0013] In addition, the tower crane body includes a column, a boom, a luffing mechanism, and a slewing mechanism. The tower crane body is also equipped with guide rails and a crawling system, which are used to move the tower crane body during the replacement operation. The tower crane body of this application is movable and the boom can be extended during actual use, which improves the flexibility of the tower crane body during the replacement of large wind turbine components.

[0014] In addition, the major components of the wind turbine include at least one of blades, gearbox, or generator. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with the corresponding pictures in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0016] Figure 1 This is a schematic flowchart of the replacement process for a major component of a wind turbine according to an embodiment of this application.

[0017] Figure 2 This is a structural flow diagram of the replacement process for major components of a wind turbine according to an embodiment of this application.

[0018] Figure 3This is a structural flow diagram of the replacement process for major components of a wind turbine according to an embodiment of this application.

[0019] Figure 4 This is a structural flow diagram of the replacement process for major components of a wind turbine according to an embodiment of this application.

[0020] Figure 5 This is a structural flow diagram of the replacement process for major components of a wind turbine according to an embodiment of this application.

[0021] Figure 6 This is a structural flow diagram of the replacement process for major components of a wind turbine according to an embodiment of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments 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 the reader's better understanding of this application. However, the technical solutions claimed in this application can be implemented even without these technical details and with various changes and modifications based on the following embodiments. The division of the various embodiments below is for the convenience of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0023] 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.

[0024] In related technologies, replacing large components faces significant challenges. Replacing wind turbine components exceeding 100 meters in height necessitates the use of ultra-large specialized hoisting equipment, which is scarce globally and difficult to dispatch. Even if such equipment can be secured, the long transportation distances and complex assembly / disassembly processes result in extremely high deployment costs. Furthermore, the complete interruption of power generation during the long downtime period of waiting for equipment and the actual replacement leads to substantial power loss. The high hoisting costs and power loss together increase the overall cost of a single replacement, severely impacting the economic viability and availability of wind turbine units. Currently, the traditional replacement model, relying on large external hoisting resources, is no longer adequate to meet the high-efficiency, rapid, and economical requirements of replacing large components for tall wind turbines.

[0025] In view of this, this application proposes a process and system for replacing major wind turbine components. The wind turbine includes a wind turbine hub, a wind turbine tower, a wind turbine nacelle, and major wind turbine components. The process for replacing major wind turbine components includes: installing a hub crane on the wind turbine hub and using the hub crane to install a tower crane lifting beam at a designated position on the top of the wind turbine nacelle; assembling a lifting platform including a tower crane body, a crawling system, and a lifting system on the bottom platform of the wind turbine tower; lifting the lifting platform to a designated position on the side of the wind turbine nacelle using the lifting system and the tower crane lifting beam; transporting the tower crane body from the designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle using the crawling system and the tower crane lifting beam; fixing the tower crane body to the designated position on the top of the wind turbine nacelle using a preset rigid connection method, and using the fixed tower crane body to perform the replacement operation of the major wind turbine components. This application utilizes the cooperation between a hub crane, a tower crane lifting beam, and a lifting platform comprising the tower crane body, a crawling system, and a lifting system to complete the assembly of the tower crane body used for replacing major wind turbine components. The entire assembly process does not require large external hoisting resources. It eliminates the need for long queues for specific large external hoisting resources, directly removing the high rental fees, long-distance relocation and transportation costs, and complex on-site assembly costs associated with large external hoisting resources. This allows the application to reduce the cost of replacing major wind turbine components, quickly initiate replacement operations, and minimize power generation losses due to wind turbine downtime.

[0026] The following is a detailed description of the implementation details of the wind turbine major component replacement process and system according to the embodiments of this application. The following content is only for the convenience of understanding and is not necessary for implementing this solution.

[0027] One embodiment of this application relates to a process for replacing large components of wind turbines, applicable to the replacement of large components in complex environments (especially offshore, mountainous, and remote wind farms) where external hoisting resources are inaccessible, hoisting costs are too high, and operational precision requirements are difficult to meet. Figure 1 As shown, the wind turbine major component replacement process of this embodiment includes steps 110 to 150, wherein the wind turbine includes a wind turbine hub, a wind turbine tower, a wind turbine nacelle and major wind turbine components, and the implementation details of each step are as follows.

[0028] In step 110, a hub crane is installed on the wind turbine hub, and the hub crane is used to install the tower crane lifting beam at a designated position on the top of the wind turbine nacelle.

[0029] Specifically, the installation diagram of hub crane 1 is as follows: Figure 2As shown, the hub crane 1 is installed at a designated installation position (such as the top center) on the wind turbine hub. Hub crane 1 has self-lifting and self-installation functions. During installation, hub crane 1 uses its self-lifting function (such as a hydraulic winch) to lift itself from the ground platform to the wind turbine hub position of the large wind turbine. Upon arrival, hub crane 1 uses its self-installation function to securely install itself at the designated position on the wind turbine hub using rigid connections such as pins, forming a stable aerial work point. Hub crane 1 is specifically designed for limited-scale lifting operations near the top of the tower, such as lifting tools or small parts weighing no more than 3 tons with an operating radius of less than 5 meters.

[0030] Specifically, the installation diagram of tower crane lifting beam 2 is as follows: Figure 2 As shown, the relevant operators will connect the tower crane lifting beam 2, which is assembled on the ground, to the hook of the hub crane 1 on the wind turbine hub. The hub crane 1 will then perform the lifting action to safely lift the tower crane lifting beam 2 to the designated position on top of the wind turbine nacelle, and install and fix the tower crane lifting beam 2 at the designated position on top. The installation of the tower crane lifting beam 2 is an important load-bearing support point for the subsequent lifting of the tower crane body to a high altitude.

[0031] Specifically, the tower crane lifting beam adopts a high-strength integrated truss design to ensure that it can stably withstand the huge loads during subsequent lifting operations at a height of 100 meters. The tower crane lifting beam is equipped with a pulley structure (such as a fixed pulley block) to guide the wire rope to lift the heavy lifting platform below to the high altitude; the tower crane lifting beam is also equipped with a crawling guide rail structure to smoothly move the entire tower crane body from the side of the wind turbine nacelle to the top working position of the wind turbine nacelle.

[0032] In step 120, a hoisting work platform, comprising the tower crane body, a crawling system, and a hoisting system, is assembled on the bottom platform of the wind turbine tower.

[0033] Specifically, the installation diagram of the tower crane body 3, the hoisting platform 4, and the hoisting system 5 is as follows: Figure 3 As shown, the installation diagram of the crawling system 6 is as follows: Figure 5 As shown. During the ground preparation phase, conventional and convenient ground lifting equipment (such as truck cranes) is used to complete the assembly of the lifting platform, which includes the tower crane body, the crawling system, and the lifting system, in stages on the bottom platform of the wind turbine tower crane.

[0034] Specifically, the frame structure of the hoisting platform 4 is first assembled on the bottom platform of the wind turbine tower. The tower crane body 3 is then installed on the hoisting platform 4. The hoisting system 5 (such as a hydraulic winch) and the crawling system 6 (such as a guide rail device) are then installed at the corresponding positions of the hoisting platform 4 and the tower crane body 3. The entire assembly process makes full use of the advantages of ground operation in terms of safety, efficiency and ease of control, transforming the complex high-altitude assembly work into modular assembly on the ground, and making full preparations for the subsequent overall one-time lifting.

[0035] Specifically, the upper structure of the tower crane body 3 includes a crossarm, counterweight, and hoisting, rotating, and luffing mechanisms, enabling the tower crane body to perform hoisting operations using the aforementioned features. At the same time, a dedicated guide rail and hydraulic crawling system (i.e., the crawling system 6 of the hoisting work platform 4) are integrated at the bottom of the tower crane body 3, allowing the tower crane body 3 to move autonomously and smoothly from the side of the wind turbine nacelle where the work hoisting platform is located to the designated position of the wind turbine nacelle at high altitude.

[0036] Specifically, the hoisting system 5 (such as a self-lifting hydraulic winch) installed on the hoisting platform 4 can output huge traction force. Through the cooperation of the wire rope of the hoisting system 5 and the high-altitude fixed pulley, the hoisting platform 4, which includes the tower crane body 3, is smoothly lifted from the ground to a height of 100 meters. At the same time, the crawling system 6 (such as a crawling guide rail device) installed on the hoisting platform 4 can move the tower crane body 3 laterally to the final working position after the tower crane body 3 reaches the high altitude.

[0037] In step 130, the hoisting platform is lifted to a designated position on the side of the wind turbine nacelle using the hoisting system and the tower crane hoisting beam.

[0038] Specifically, such as Figure 4 As shown, the hoisting system 5 on the hoisting platform 4 can be a hydraulic winch. The high-strength steel wire rope released by the hydraulic winch passes upward through the pulley structure (such as a fixed pulley block) pre-installed on the tower crane hoisting beam 2 at a height of 100 meters, forming a force turning fulcrum. Subsequently, the end of the steel wire rope is fixed back to the platform or the anchor point below. When the winch starts to tighten the rope, the pulley structure converts the tension into an upward traction force on the hoisting platform 4 itself, enabling the hoisting platform 4 to use its own power to smoothly and controllably lift itself, together with the tower crane body 3 above it and the climbing system 6, to the designated position on the side of the wind turbine nacelle in the vertical direction. The entire process does not require the intervention of large external crane resources.

[0039] In step 140, the main body of the tower crane is transported from a designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle using a crawling system and a tower crane lifting beam.

[0040] Specifically, such as Figure 5As shown, when the lifting platform 4, carrying the tower crane body 3 and the crawling system 6, arrives at the designated position on the side of the wind turbine nacelle, the crawling system 6 (such as a hydraulic stepping crawling system) at the bottom of the tower crane body 3 engages and locks with the precision guide rail installed on the tower crane lifting beam 2 at the top of the wind turbine nacelle. Subsequently, the crawling system 6, acting as a drive mechanism, pulls the tower crane body 3 in a stepping manner, moving smoothly and controllably horizontally from the designated position on the side of the wind turbine nacelle to the designated position on the top of the wind turbine nacelle along the preset aerial guide rail. The entire process is completed autonomously at a height of 100 meters, without the need for any large external crane resources, achieving safe, millimeter-level precision displacement and positioning of the tower crane body 3 in a confined space at high altitude.

[0041] In step 150, the tower crane body is fixed to the top of the wind turbine nacelle at a designated position using a preset rigid connection method, and the fixed tower crane body is used to replace the major components of the wind turbine.

[0042] Specifically, the tower crane body 3 is rigidly fixed to a designated position on top of the wind turbine nacelle using high-strength pins and other rigid connection methods, creating a stable high-altitude hoisting environment. Once fixed, the tower crane body 3 can be used for replacing large components of the wind turbine, such as... Figure 6 As shown, the boom of the tower crane body 3 can perform conventional lifting operations such as rotation and luffing, and its working range can cover the blade sweeping area and the interior of the nacelle. With its ample lifting capacity and precise positioning control, the tower crane body 3 can directly perform replacement operations of large core components such as wind turbine blade removal, gearbox removal, and generator replacement, thereby completing all critical maintenance work in situ at high altitude without relying on external large cranes.

[0043] In this embodiment, the wind turbine includes a wind turbine hub, a wind turbine tower, a wind turbine nacelle, and major wind turbine components. The replacement process for the major wind turbine components includes: installing a tower crane lifting beam at a designated position on the top of the wind turbine nacelle using a hub crane on the wind turbine hub; assembling a lifting platform, including a tower crane body, a crawling system, and a lifting system, on the bottom platform of the wind turbine tower; lifting the lifting platform to a designated position on the side of the wind turbine nacelle using the lifting system and the tower crane lifting beam; transporting the tower crane body from the designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle using the crawling system and the tower crane lifting beam; fixing the tower crane body to the designated position on the top of the wind turbine nacelle using a preset rigid connection method, and using the fixed tower crane body to perform the replacement operation of the major wind turbine components. This application utilizes the cooperation between a hub crane, a tower crane lifting beam, and a lifting platform comprising the tower crane body, a crawling system, and a lifting system to complete the assembly of the tower crane body used for replacing major wind turbine components. The entire assembly process does not require large external hoisting resources. It eliminates the need for long queues for specific large external hoisting resources, directly removing the high rental fees, long-distance relocation and transportation costs, and complex on-site assembly costs associated with large external hoisting resources. This allows the application to reduce the cost of replacing major wind turbine components, quickly initiate replacement operations, and minimize power generation losses due to wind turbine downtime.

[0044] The steps described above are for clarity only. In practice, they can be combined into one step or some steps can be split into multiple steps. As long as they include the same logical relationship, they are all within the scope of protection of this application. Adding insignificant modifications or introducing insignificant designs to the algorithm or process, but without changing the core design of the algorithm and process, are also within the scope of protection of this application.

[0045] Furthermore, the examples mentioned in the above embodiments can be freely combined, and any combination can be understood as an implementation method. The terms "implementation method" or "example" appearing in various locations in the specification do not necessarily refer to the same implementation method, nor are they independent or alternative implementation methods mutually exclusive with other implementation methods. Those skilled in the art will understand that the implementation methods described herein can be combined with other implementation methods.

[0046] Another embodiment of this application relates to a wind turbine major component replacement system. The wind turbine includes a wind turbine hub, a wind turbine tower, a wind turbine nacelle, and major wind turbine components. The system includes: a hub crane configured to be mounted on the wind turbine hub; a tower crane lifting beam configured to be installed at a designated position on the top of the wind turbine nacelle via the hub crane; a lifting platform configured to be assembled on a bottom platform of the wind turbine tower, wherein the lifting platform includes a tower crane body, a crawling system, and a lifting system; the lifting system is configured to cooperate with the tower crane lifting beam to lift the lifting platform to a designated position on the side of the wind turbine nacelle; the crawling system is configured to cooperate with the tower crane lifting beam to transport the tower crane body from the designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle; the tower crane body is configured to be fixed at the designated position on the top of the wind turbine nacelle by a preset rigid connection method, and to perform the replacement operation of the major wind turbine components.

[0047] In some implementations, the hub crane is a hub crane with self-lifting and self-installation functions, which is installed at a designated installation position on the wind turbine hub via a rigid connection; wherein, the rigid connection can be a pin connection. The hub crane does not require large external cranes for installation, and can achieve high-altitude installation by relying on its self-lifting and self-installation functions.

[0048] In some implementations, the hoisting platform is assembled on the bottom platform of the wind turbine tower, including: assembling the hoisting platform on the bottom platform of the wind turbine tower using a truck crane; assembling the tower crane body on the hoisting platform; and installing a crawling system and a hoisting system on the hoisting platform. The tower crane body, crawling system, hoisting system, and hoisting platform are all assembled at the bottom platform of the wind turbine tower, which greatly improves safety and efficiency during the assembly process while ensuring assembly quality, and also reduces the number of personnel and time spent on high-altitude operations.

[0049] In some implementations, the tower crane lifting beam includes a pulley structure, and the lifting system includes a hydraulic winch. The lifting system is configured to use the cooperation of the hydraulic winch and the pulley structure to raise the lifting platform to a designated position on the side of the wind turbine nacelle. The lifting platform, including the tower crane main unit, can be raised to the designated position through the cooperation of the hydraulic winch and the pulley structure, avoiding reliance on external large crane resources during the replacement of major wind turbine components.

[0050] In some implementations, the tower crane lifting beam includes a crawling guide structure, and the crawling system is a hydraulic stepping crawling system. The hydraulic stepping crawling system is configured to cooperate with the crawling guide structure to transport the tower crane body from a designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle. The cooperation between the crawling guide structure and the hydraulic stepping crawling system allows for the transportation of the tower crane main unit to the designated position, avoiding reliance on external large crane resources during the replacement of major wind turbine components.

[0051] In some implementations, the tower crane body includes a column, a boom, a luffing mechanism, and a slewing mechanism. The tower crane body also features guide rails and a crawling system for moving the tower crane body during replacement operations. The movable tower crane body and extendable boom during actual use enhance the flexibility of the tower crane body during the replacement of large wind turbine components.

[0052] In some implementations, the major components of the wind turbine include at least one of blades, gearbox, or generator.

[0053] It is not difficult to see that this embodiment is a device embodiment corresponding to the above method embodiment, and this embodiment can be implemented in conjunction with the above method embodiment. The relevant technical details mentioned in the above method embodiment are still valid in this embodiment, and will not be repeated here to avoid repetition. Correspondingly, the relevant technical details mentioned in this embodiment can also be applied to the above method embodiment.

[0054] Those skilled in the art will understand that the above embodiments are specific implementations of this application, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of this application.

Claims

1. A process for replacing major components of a wind turbine, characterized in that, The wind turbine includes a hub, tower, nacelle, and other major components. The process includes the following steps: A hub crane is installed on the wind turbine hub, and the hub crane is used to install a tower crane lifting beam at a designated position on the top of the wind turbine nacelle; At the bottom platform of the wind turbine tower, a hoisting work platform is assembled, which includes the tower crane body, crawling system and hoisting system; The hoisting system and the tower crane hoisting beam are used to lift the hoisting platform to a designated position on the side of the wind turbine nacelle. The tower crane body is transported from a designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle using the crawling system and the tower crane lifting beam. The tower crane body is fixed at a designated position on the top of the wind turbine nacelle using a pre-set rigid connection method, and the fixed tower crane body is used to replace the major components of the wind turbine.

2. The wind turbine major component replacement process according to claim 1, characterized in that, The installation of the hub crane on the wind turbine hub includes: At the designated installation location of the wind turbine hub, a hub crane with self-lifting and self-installation functions is installed via a rigid connection.

3. The wind turbine major component replacement process according to claim 1, characterized in that, The hoisting platform, comprising a tower crane body, a crawling system, and a hoisting system, is assembled on the bottom platform of the wind turbine tower. The hoisting platform is assembled on the bottom platform of the wind turbine tower using a truck crane; The tower crane body is assembled on the hoisting platform; The crawling system and the lifting system are installed on the lifting operation platform.

4. The wind turbine major component replacement process according to claim 1, characterized in that, The tower crane lifting beam includes a pulley structure, and the lifting system includes a hydraulic winch; The step of lifting the hoisting platform to a designated position on the side of the wind turbine nacelle using the hoisting system and the tower crane hoisting beam includes: Using the hydraulic winch of the hoisting system and the pulley structure of the tower crane hoisting beam, the hoisting work platform is lifted to a designated position on the side of the wind turbine nacelle.

5. The wind turbine major component replacement process according to claim 1, characterized in that, The tower crane lifting beam includes a crawling guide rail structure, and the crawling system is a hydraulic stepping crawling system; The process of transporting the tower crane body from a designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle via the crawling system and the tower crane lifting beam includes: Using the hydraulic stepping crawling system and the crawling guide rail structure of the tower crane lifting beam, the tower crane body is transported from a designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle.

6. The wind turbine major component replacement process according to claim 1, characterized in that, The tower crane body includes a column, a boom, a luffing mechanism, and a slewing mechanism. The tower crane body is also equipped with guide rails and a crawling system, which are used to move the tower crane body during the replacement operation.

7. The wind turbine major component replacement process according to claim 1, characterized in that, The major components of the wind turbine include at least one of blades, gearbox, or generator.

8. A system for replacing major components of a wind turbine, characterized in that, The wind turbine includes a hub, tower, nacelle, and other major components. The system includes: A hub crane is configured to be mounted on the wind turbine hub; The tower crane lifting beam is configured to be installed at a designated location on top of the wind turbine nacelle via the hub crane; A hoisting work platform is configured to be assembled on the bottom platform of the wind turbine tower, wherein the hoisting work platform includes a tower crane body, a crawling system and a hoisting system; The lifting system is configured to cooperate with the tower crane lifting beam to lift the lifting platform to a designated position on the side of the wind turbine nacelle; The crawling system is configured to cooperate with the tower crane lifting beam to transport the tower crane body from a designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle. The tower crane body is configured to be fixed to the top of the wind turbine nacelle via a preset rigid connection method, and to carry out the replacement of the major components of the wind turbine.

9. The wind turbine major component replacement system according to claim 8, characterized in that, The tower crane lifting beam includes a pulley structure, and the lifting system includes a hydraulic winch; The lifting system is configured to use the cooperation of the hydraulic winch and the pulley structure to lift the lifting platform to a designated position on the side of the wind turbine nacelle.

10. The wind turbine major component replacement system according to claim 8, characterized in that... The tower crane lifting beam includes a crawling guide rail structure, and the crawling system is a hydraulic stepping crawling system; The hydraulic stepping crawling system is configured to cooperate with the crawling guide structure to transport the tower crane body from a designated position on the side of the wind turbine nacelle to a designated position on the top of the wind turbine nacelle.

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