Replacement device

Abstract

The utility model relates to the technical field of fan operation and maintenance, and provides a replacing device which comprises a supporting mechanism, a moving trolley, a driving mechanism and a lifting appliance, the supporting mechanism comprises a first supporting assembly and a second supporting assembly, and the first supporting assembly and the second supporting assembly are both arranged at corresponding preset installation positions; the moving trolley is movably arranged on the second supporting assembly. The driving mechanism comprises a first driving assembly and a second driving assembly, and a traction piece led out of the first driving assembly is wound around the first supporting assembly, the second supporting assembly and the moving trolley and fixed to the end of the second supporting assembly. The second driving assembly is arranged on the second supporting assembly, connected with the moving trolley and used for driving the moving trolley to do translational motion. And the lifting appliance is suspended on the traction piece passing through the moving trolley and is suitable for performing lifting motion under the traction action of the traction piece. The device can replace a large hoisting facility to replace parts (such as a transformer) in a fan cabin, and the operation and maintenance cost of a fan can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine operation and maintenance technology, and in particular to a replacement device. Background Technology

[0002] In the wind power sector, replacing wind turbine transformers is a crucial part of wind turbine operation and maintenance. Currently, large lifting equipment is commonly used to complete this task. With the continuous development of the wind power industry, the installed capacity of wind turbines is showing a trend of increasing daily. This increase in installed capacity leads to a continuous increase in the height of wind turbines. This change brings new challenges to the replacement of wind turbine transformers.

[0003] Due to the increased height of the wind turbines, when using large lifting equipment to replace transformers, the load capacity of the lifting equipment must be greater to meet the hoisting requirements and be able to support the weight of the transformers. At the same time, the lifting height must also be increased accordingly to reach the wind turbines and transformers at higher positions for replacement.

[0004] However, the increased load and lifting height of large lifting equipment raises the cost of wind turbine operation and maintenance. Because the purchase cost of large lifting equipment is high, transportation and maintenance also require significant investment of manpower, materials, and financial resources, thus increasing the overall cost of wind turbine operation and maintenance. Utility Model Content

[0005] This utility model provides a replacement device to solve at least one of the above-mentioned technical defects in the prior art, and to replace large lifting facilities for replacing components (such as wind turbine transformers), which can effectively reduce the operation and maintenance costs of wind turbines.

[0006] This utility model provides a replacement device, comprising:

[0007] The support mechanism includes a first support component and a second support component, wherein the first support component is disposed at a first preset installation position and the second support component is disposed at a second preset installation position;

[0008] A mobile trolley is movably mounted on the second support assembly;

[0009] The driving mechanism includes a first driving component and a second driving component. A traction member extending from the first driving component is wound around the first support component, the second support component, and the mobile trolley, and is fixed to the end of the second support component. The second driving component is disposed on the second support component and connected to the mobile trolley, and is used to drive the mobile trolley to perform translational movement.

[0010] A lifting device suitable for lifting components, the lifting device being suspended on a traction member passing through the moving trolley, and suitable for lifting and lowering under the traction of the traction member.

[0011] According to the replacement device provided by this utility model, the first support component includes a first support frame and a first guide pulley, the first support frame is disposed at the first preset installation position, and the first guide pulley is disposed at the first support frame;

[0012] The second support assembly includes a second support frame and a plurality of second guide pulleys. The second support frame is disposed at the second preset installation position, and the plurality of second guide pulleys are spaced apart from the second support frame.

[0013] The traction component is sequentially wound around the first guide pulley, a plurality of second guide pulleys and the moving trolley, and fixed to the end of the second support assembly.

[0014] According to the replacement device provided by this utility model, the first support frame includes a first column and a truss, the first column is spaced apart at the first preset installation position, and the truss is mounted on the first column; the first guide pulley is mounted on the truss.

[0015] According to the replacement device provided by this utility model, the second support frame includes a first crossbeam, a second crossbeam, and a plurality of second columns;

[0016] Multiple second columns are spaced apart at the second preset installation positions, and the first beam and the second beam are respectively mounted on at least two second columns, with the first beam and the second beam arranged in parallel.

[0017] A connecting column is provided between two adjacent second columns, and multiple second guide pulleys are respectively provided on the connecting column, the second column and the corresponding crossbeam.

[0018] According to the replacement device provided by this utility model, the mobile trolley includes a frame and a lifting component;

[0019] The vehicle frame is mounted on the first crossbeam and the second crossbeam, and the second drive assembly is mounted on the first crossbeam and / or the second crossbeam and connected to the vehicle frame, for driving the vehicle frame to perform linear reciprocating motion along the first crossbeam and the second crossbeam;

[0020] The lifting component is mounted on the vehicle frame, and the lifting component is symmetrically provided with a third guide pulley and a fourth guide pulley near both ends;

[0021] The lifting device is equipped with a movable pulley, and the traction member is sequentially wound around the first guide pulley, a plurality of second guide pulleys, the third guide pulley, the movable pulley, and the fourth guide pulley, and is fixed to the intermediate beam connected between the first crossbeam and the second crossbeam.

[0022] According to the replacement device provided by this utility model, the frame is provided with movable parts at both ends, and the first crossbeam and the second crossbeam are provided with cooperating parts that move in conjunction with the movable parts.

[0023] The replacement device provided by this utility model further includes a support component, which is disposed between the first guide pulley and the adjacent second guide pulley, and is used to support the traction member.

[0024] The replacement device provided by this utility model also includes a mobile platform, which includes a platform body, a walking component, and a traction component;

[0025] The platform body is connected to the walking component, which is movably mounted on the second support component. The traction component includes a traction wheel, a traction wheel frame, and a traction rope. The traction wheel is mounted on the second support component and rotatably mounted on the traction wheel frame. The traction rope has a first free end and a second free end. The first free end is connected to the walking component, and the second free end is wound around the traction wheel and connected to the second support component.

[0026] According to the replacement device provided by this utility model, the walking assembly includes a walking wheel frame and walking wheels;

[0027] The platform body is connected to the walking wheel frame, the walking wheels are spaced apart on the walking wheel frame, and the walking wheels abut against the second support component.

[0028] The replacement device provided by this utility model also includes an auxiliary suspension component;

[0029] The second support assembly is provided with a reinforcing support assembly, and the auxiliary suspension assembly is disposed on the reinforcing support assembly. The auxiliary suspension assembly is used to transfer the components.

[0030] The replacement device provided by this utility model, by setting up a support mechanism, a mobile trolley, and a drive mechanism, allows the mobile trolley to be movably mounted on a second support assembly. In the drive mechanism, the traction component of the second drive assembly is wound around the drive assembly, with one end extending from the drive assembly and wound around the first support assembly, the second support assembly, and the mobile trolley, and fixed to the end of the second support assembly. The second drive assembly is located on the second support assembly and connected to the mobile trolley, used to drive the mobile trolley to perform translational movement. The lifting device is suspended on the traction component passing through the mobile trolley and is adapted to perform lifting and lowering movements under the traction of the traction component. This method can effectively reduce wind turbine operation and maintenance costs by replacing large lifting facilities for replacing components (such as wind turbine transformers).

[0031] Because the lifting device is raised and lowered by the first drive assembly (winch), and the moving trolley is moved horizontally on the second support assembly by the second drive assembly (electric push rod), the replacement of components (wind turbine transformer) can be achieved. This eliminates the need for large lifting facilities to replace components in the wind turbine nacelle, thus avoiding the high maintenance costs such as complex maintenance and professional testing caused by the large load and high lifting height required by large lifting facilities. This reduces equipment purchase costs and lowers transportation and storage costs.

[0032] Furthermore, by using the drive component (winch) of the first drive assembly to control the lifting motion of the hoist and using the second drive assembly (electric push rod) to push the moving trolley and the hoist to translate, the wind turbine transformer can be operated precisely. Compared with the operational precision limitations that large lifting facilities may have, this method is more conducive to accurately replacing the transformer in the specific environment of the wind turbine. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is one of the structural schematic diagrams of the replacement device provided in the embodiments of this utility model.

[0035] Figure 2 yes Figure 1 A partial structural diagram of the replacement device is shown.

[0036] Figure 3 This is the second structural schematic diagram of the replacement device provided in this embodiment of the utility model.

[0037] Figure 4 yes Figure 3 A partial structural diagram of the replacement device is shown.

[0038] Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0039] Figure label:

[0040] 10. First support assembly; 11. First support frame; 111. First column; 112. Truss; 12. First guide pulley;

[0041] 20. Second support assembly; 21. Second support frame; 211. First crossbeam; 212. Second crossbeam; 213. Second column; 214. Connecting column; 215. Intermediate beam; 216. Fitting component; 22. Second guide pulley; 23. Reinforcing support assembly;

[0042] 30. Mobile trolley; 31. Chassis; 32. Lifting component; 33. Third guide pulley; 34. Fourth guide pulley; 35. Moving component;

[0043] 40. First drive assembly; 41. Drive component; 42. Traction component;

[0044] 50. Second drive assembly; 60. Lifting device; 61. Movable pulley; 70. Support assembly;

[0045] 80. Mobile platform; 81. Platform body; 82. Walking component; 821. Walking wheel frame; 822. Walking wheel; 83. Traction component; 831. Traction wheel; 832. Traction wheel frame; 833. Traction rope;

[0046] 90. Auxiliary suspension components; P1, first preset installation position; P2, second preset installation position. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0048] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0049] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Figure 1 This is one of the structural schematic diagrams of the replacement device provided in the embodiments of this utility model. Figure 2 yes Figure 1 A partial structural diagram of the replacement device is shown.

[0052] See Figure 1 and Figure 2 This utility model embodiment provides a replacement device for replacing components inside a fan, such as a transformer. The replacement device includes a support mechanism, a moving trolley 30, a drive mechanism, and a lifting device 60.

[0053] The support mechanism includes a first support component 10 and a second support component 20. The first support component 10 is located at a first preset installation position P1, which can be the rear frame of the wind turbine nacelle, or it can be the ground or the tower platform of the wind turbine. The second support component 20 is installed at a second preset installation position P2 at a certain distance from the first support component 10. The installation distance between the first support component 10 and the second support component 20 is determined according to the movement trajectory of components (such as wind turbine transformers). The second preset installation position P2 can be the mounting bolts of the main bearing housing inside the wind turbine nacelle.

[0054] The first support component 10 and the second support component 20 can both be gantry-type frame structures welded from I-beams and columns. The surfaces of the first support component 10 and the second support component 20 are rust-proofed to adapt to complex working environments.

[0055] The movable trolley 30 is movably mounted on the second support assembly 20 and can move relative to the second support assembly 20 to change its position. The movable trolley 30 can be in a rolling engagement or a sliding engagement with the second support assembly 20. When the movable trolley 30 is in a rolling engagement with the second support assembly 20, the main structure of the movable trolley 30 is provided with rollers; when the movable trolley 30 is in a sliding engagement with the second support assembly 20, the main structure of the movable trolley 30 can be provided with sliders.

[0056] The drive mechanism includes a first drive assembly 40 and a second drive assembly 50. The first drive assembly 40 includes a drive member 41 and a traction member 42. The drive member 41 is located at the position of the first support assembly 10. The traction member 42 is wound around the drive member 41. One end of the traction member 42 extends out from the drive member 41 and is wound around the first support assembly 10, the second support assembly 20 and the moving trolley 30, and is fixed to the end of the second support assembly 20. The second drive assembly 50 is located on the second support assembly 20 and then connected to the moving trolley 30 to drive the moving trolley 30 to perform translational movement.

[0057] The drive component 41 can be a winch, which can be installed on the rear frame of the wind turbine nacelle. The traction component 42 is a high-strength steel wire rope, the diameter of which is determined according to the weight of the component to be lifted. The steel wire rope is led out from the winch, first wound around the pulley block at the top of the first support assembly 10, then extends to the second support assembly 20, wound around the guide wheel on the second support assembly 20, then wound around the pulley on the moving trolley 30, and finally fixed to the end of the second support assembly 20.

[0058] The second drive assembly 50 is an electric actuator, or a combination of an electric actuator and a linear guide rail. The electric actuator is mounted on the second support assembly 20 and connected to the moving trolley 30. The linear guide rail guides the movement of the moving trolley 30. When the electric actuator extends or retracts, it pushes the moving trolley 30 to perform translational movement on the second support assembly 20.

[0059] The lifting device 60 is suitable for lifting components inside the wind turbine nacelle. The lifting device 60 is suspended on the traction member 42 that passes through the moving trolley 30 and is suitable for lifting and lowering under the traction of the traction member 42.

[0060] The lifting device 60 can be a structure composed of a balance beam, multiple high-strength alloy steel hooks, and a lifting chain. When lifting corresponding components (such as wind turbine transformers), the hooks are connected to preset lifting points on the components, and the balance beam is suspended from the traction member 42 (steel wire rope) via a fixed pulley and a moving trolley 30. Under the traction of the traction member 42, the lifting device 60 can achieve the lifting and lowering movement of the components by the forward and reverse rotation of the winch. For example, when a component needs to be lifted to a height of 2 meters for removal and replacement, the lifting device 60 can stably lift the component to the designated height under the action of the traction member 42.

[0061] It is understood that the replacement device provided in this embodiment of the present invention, by setting up a support mechanism, a mobile trolley 30, and a drive mechanism, allows the mobile trolley 30 to be movably mounted on the second support assembly 20. In the drive mechanism, the traction member 42 of the second drive assembly 50 is wound around the drive assembly 41, with one end extending from the drive assembly 41 and wound around the first support assembly 10, the second support assembly 20, and the mobile trolley 30, and fixed to the end of the second support assembly 20. The second drive assembly 50 is located on the second support assembly 20 and connected to the mobile trolley 30, used to drive the mobile trolley 30 to perform translational movement. The lifting device 60 is suspended on the traction member 42 passing through the mobile trolley 30 and is adapted to perform lifting and lowering movements under the traction of the traction member 42. This device can replace large lifting equipment for replacing components (such as transformers) inside the wind turbine nacelle, effectively reducing wind turbine operation and maintenance costs.

[0062] Since the lifting device 60 is raised and lowered by the drive component 41 (winch) of the first drive assembly 40, and the moving trolley 30 is pushed to move horizontally on the second support assembly 20 by the second drive assembly 50 (electric push rod), the replacement of components (wind turbine transformer) can be realized. This eliminates the need for large lifting facilities to replace components in the wind turbine nacelle, thereby avoiding the high maintenance costs such as complex maintenance and professional testing caused by the large load and high lifting height required by large lifting facilities, reducing equipment purchase costs, and lowering transportation and storage costs.

[0063] Furthermore, by using the drive component 41 (winch) of the first drive assembly 40 to control the lifting motion of the hoist 60, and by using the second drive assembly 50 (electric push rod) to push the moving trolley 30 and the hoist 60 to perform translational motion, the wind turbine transformer can be operated precisely. Compared with the operational precision limitations that may exist in large lifting facilities, this method is more conducive to accurately replacing the transformer in the specific environment of the wind turbine.

[0064] Large lifting equipment has a large load and a high lifting height, posing significant safety risks during operation, such as the falling of heavy objects. This invention uses a combination of the drive component 41 (winch) of the first drive assembly 40 and the second drive assembly 50 (electric push rod) to form the drive assembly of the replacement device. The overall structure of the replacement device is relatively small and the operation is relatively flexible, reducing safety risks during operation to a certain extent.

[0065] Continue reading Figure 1 In some embodiments of this utility model, the first support assembly 10 includes a first support frame 11 and a first guide pulley 12. The first support frame 11 is located at a first preset installation position P1, and the first guide pulley 12 is located on the first support frame 11. The second support assembly 20 includes a second support frame 21 and a plurality of second guide pulleys 22. The second support frame 21 is located at a second preset installation position P2, and the plurality of second guide pulleys 22 are spaced apart on the second support frame 21. The traction member 42 is sequentially wound around the first guide pulley 12, the plurality of second guide pulleys 22, and the moving trolley 30, and is fixed to the end of the second support assembly 20.

[0066] The first support frame 11 is constructed by welding or bolting high-strength steel pipes and I-beams. The height of the first support frame 11 is designed according to the height requirements of the hoisted components and the spatial layout of the installation site. The first guide pulley 12 is installed on the top of the first support frame 11, and protective baffles are installed on both sides of the pulley to prevent the traction component 42 (wire rope) from derailing during operation.

[0067] The second support frame 21 is also constructed by welding or bolting steel pipes and I-beams. The main body of the second support frame 21 can be rectangular to accommodate the horizontal movement range required for material hoisting. Multiple second guide pulleys 22 are installed at intervals on the second support frame 21.

[0068] After the traction member 42 (wire rope) is led out from the drive member 41 (such as a winch), it first winds around the top groove of the first guide pulley 12. Then, the wire rope extends to the second support assembly 20 and winds around multiple second guide pulleys 22 in sequence. The direction of the wire rope is adjusted according to the structure of the second support frame 21 and the material lifting requirements while winding around each second guide pulley 22. Next, the wire rope winds around the relevant pulley assembly of the moving trolley 30 and is finally fixed to the end of the second support assembly 20. A dedicated wire rope fixing device is provided at the end, which consists of a high-strength steel clamp and a fixing seat. The steel clamp tightly clamps the end of the wire rope, and the fixing seat is bolted to the end crossbeam of the second support frame 21.

[0069] Furthermore, the first support frame 11 includes a first column 111 and a truss 112. The first column 111 is spaced apart at the first preset installation position P1, and the truss 112 is mounted on the first column 111. The first guide pulley 12 is mounted on the truss 112.

[0070] In the wind turbine operation and maintenance scenario, the first column 111 is made of high-strength alloy steel and two first columns 111 are installed. The two first columns 111 are spaced apart on the rear frame of the nacelle. The bottom of the first column 111 is connected to the rear frame of the nacelle through a flange. The truss 112 is welded or bolted to the two first columns 111.

[0071] The first guide pulley 12 is mounted on the truss 112 via a bearing housing. A high-precision rolling bearing is installed inside the bearing housing to ensure flexible rotation of the first guide pulley 12. During wind turbine operation and maintenance, the first guide pulley 12 guides the movement of the traction component 42. Due to the special structure and working environment of the rear frame of the nacelle, the installation angle of the first guide pulley 12 can be adaptively adjusted according to the rotation plane of the wind turbine blades and the needs of maintenance operations, ensuring that the traction component 42 can accurately engage with the first guide pulley 12 during operation. Simultaneously, to prevent the traction component 42 from dislodging during operation, protective baffles are installed on both sides of the first guide pulley 12.

[0072] In addition, in order to improve the structural strength of the first support frame 11, multiple reinforcing members are connected to the first column 111 and the truss 112. The reinforcing members are made of steel plates or steel pipes.

[0073] Furthermore, the second support frame 21 includes a first crossbeam 211, a second crossbeam 212, and a plurality of second columns 213; the plurality of second columns 213 are spaced apart at the second preset installation position P2, the first crossbeam 211 and the second crossbeam 212 are respectively mounted on at least two second columns 213, and the first crossbeam 211 and the second crossbeam 212 are arranged in parallel; a connecting column 214 is provided between two adjacent second columns 213, and a plurality of second guide pulleys 22 are respectively provided on the connecting column 214, the second column 213 and the corresponding crossbeam.

[0074] In the wind turbine operation and maintenance scenario, the second support column 213 can be made of high-strength stainless steel. Multiple second support columns 213 are spaced apart at the second preset installation position P2 (i.e., on the mounting bolts of the main bearing housing inside the wind turbine nacelle). This embodiment uses four second support columns 213 as an example, arranged around the main bearing housing inside the wind turbine nacelle. The first crossbeam 211 and the second crossbeam 212 are both made of I-beams. The first crossbeam 211 and the second crossbeam 212 are respectively mounted on two second support columns 213 and are arranged parallel to each other. The lengths of the first crossbeam 211 and the second crossbeam 212 are determined according to the size of the wind turbine and the maintenance operation range. The connection between the first crossbeam 211 and the second crossbeam 212 and the second support columns 213 is welding or bolting.

[0075] A connecting column 214 is provided between two adjacent second columns 213. The connecting column 214 can be made of round steel. The main function of the connecting column 214 is to enhance the overall stability of the second support frame 21. The connection between the connecting column 214 and the second column 213 is by welding or bolting. The length of the connecting column 214 is determined according to the spacing between adjacent second columns 213.

[0076] Some of the multiple second guide pulleys 22 are located on the connecting column 214, while others are located on the second column 213. Both are primarily used to adjust the direction of the traction component 42 (such as the wire rope). Second guide pulleys 22 are also installed on the first crossbeam 211 and the second crossbeam 212. In wind turbine operation and maintenance scenarios, when hoisting large components (such as wind turbine transformers), the second guide pulleys 22 on the crossbeams can share some of the traction pressure, ensuring the wire rope runs smoothly throughout the hoisting process. Simultaneously, the positions and installation angles of these pulleys are calculated to adapt to the hoisting path and operational requirements of the wind turbine transformer.

[0077] Continue reading Figure 1 and Figure 2 In some embodiments of this utility model, the mobile trolley 30 includes a frame 31 and a lifting component 32; the frame 31 is mounted on a first crossbeam 211 and a second crossbeam 212, and a second drive assembly 50 (electric push rod) is mounted on at least one of the first crossbeam 211 and the second crossbeam 212 and connected to the frame 31, for driving the frame 31 to perform linear reciprocating motion along the first crossbeam 211 and the second crossbeam 212.

[0078] The frame 31 is mounted on the first crossbeam 211 and the second crossbeam 212. The contact area with the crossbeams can be set as a smooth surface, and both ends of the frame 31 can directly slide in contact with the corresponding parts of the crossbeams. This allows the second drive assembly 50 (electric push rod) to push the frame 31 to perform linear reciprocating motion along the crossbeams.

[0079] The lifting component 32 is mounted on the frame 31 and is mainly used to install guide pulleys. Specifically, the lifting component 32 has a third guide pulley 33 and a fourth guide pulley 34 symmetrically arranged near both ends, located on both sides of the frame 31. When lifting the transformer, the third guide pulley 33 and the fourth guide pulley 34 can guide the traction component 42 to accurately wind around the lifting component 32, ensuring the smooth lifting and lowering of the lifting device 60.

[0080] The lifting device 60 is equipped with a movable pulley 61, which is a key component for achieving labor-saving lifting of the transformer. Through the action of the movable pulley 61, the pulling force required for the traction component 42 can be effectively reduced. The traction component 42 is sequentially wound around the first guide pulley 12, multiple second guide pulleys 22, a third guide pulley 33, the movable pulley 61, and a fourth guide pulley 34, and is fixed to the intermediate beam 215 connecting the first crossbeam 211 and the second crossbeam 212.

[0081] Essentially, the traction component 42 (such as a wire rope) is drawn from the drive component 41 (such as a winch), first winding around the first guide pulley 12 on the truss 112 of the first support frame 11 to adjust the initial direction of the wire rope, causing it to extend towards the second support frame 21. Then, the wire rope sequentially winds around multiple second guide pulleys 22 on the second support frame 21, which are distributed on the connecting column 214, the second column 213, and the corresponding crossbeams, further adjusting the path of the wire rope so that it can accurately reach the lifting component 32 on the moving trolley 30.

[0082] Then, the wire rope is wound around the third guide pulley 33 on the lifting component 32, enters the movable pulley 61 of the lifting device 60, and then comes out from the movable pulley 61 and is wound around the fourth guide pulley 34. Finally, it is fixed to the intermediate beam 215 connected between the first crossbeam 211 and the second crossbeam 212. The wire rope is fixed on the intermediate beam 215 by a wire rope clamp to ensure that the traction component 42 will not loosen or slip during the lifting of the transformer.

[0083] Continue reading Figure 1 and Figure 2 In some embodiments of this utility model, the frame 31 is provided with movable parts 35 near both ends, and the first crossbeam 211 and the second crossbeam 212 are provided with cooperating parts 216 that move in conjunction with the movable parts 35.

[0084] The movable component 35 may include a slider or a movable wheel.

[0085] When the moving part 35 includes a slider, the slider is made of wear-resistant engineering plastic, and the upper surface of the slider is bolted to the end of the frame 31 to ensure a firm connection. A groove is provided on the lower surface of the slider, which mates with the mating parts 216 on the first crossbeam 211 and the second crossbeam 212 to guide and prevent the slider from shifting laterally.

[0086] The mating parts 216 on the first crossbeam 211 and the second crossbeam 212 are protrusions or slide rails that match the slider grooves. Both the protrusions or slide rails are made of stainless steel to prevent rust from affecting the slider's sliding motion. The protrusions or slide rails are arranged along the length of the crossbeams to ensure that the slider can smoothly perform linear reciprocating motion on the crossbeams.

[0087] During wind turbine operation and maintenance, such as when hoisting a transformer, the chassis 31 moves on the crossbeam via a slider. Due to the low-friction design between the slider and the mating part 216, the chassis 31 can move with relatively small driving force while ensuring the accuracy of movement. When it is necessary to move the transformer accurately to a specific location for maintenance, the slider enables the chassis 31 to be precisely positioned on the crossbeam.

[0088] When the movable component 35 includes a movable wheel, the movable wheel is made of high-strength alloy steel, and a rubber anti-slip layer is provided on the rim surface of the movable wheel. The rubber anti-slip layer can not only increase the friction between the movable wheel and the crossbeam and prevent the movable wheel from slipping when the fan vibrates during operation, but also play a certain buffering role and protect the surface of the crossbeam.

[0089] The mating parts 216 on the first crossbeam 211 and the second crossbeam 212 are rails. The rails are made of I-beams, and the upper surface of the rails is flat, contacting the rubber anti-slip layer of the moving wheels to provide support and guidance for the moving wheels.

[0090] In wind turbine operation and maintenance, such as when transporting a wind turbine transformer from inside or outside the wind turbine to a designated location, the chassis 31 moves on the track of the crossbeam via moving wheels. Even if the wind turbine experiences significant vibration or sudden minor swaying, the moving wheels will not leave the track, ensuring the smooth operation of the transformer hoisting.

[0091] Figure 3 This is the second structural schematic diagram of the replacement device provided in this embodiment of the utility model. Figure 4 yes Figure 3 A partial structural diagram of the replacement device is shown. Figure 5 yes Figure 4 Enlarged view of part A in the middle.

[0092] Continue reading Figure 1 And see also Figure 3In some embodiments of the present invention, the replacement device further includes a support component 70, which is located between the first guide pulley 12 and the adjacent second guide pulley 22, and is used to support the traction member 42.

[0093] In wind turbine operation and maintenance scenarios, when a transformer needs to be hoisted, the support assembly 70 is used to support the traction component 42. For example, the traction component 42 is sequentially wound around the first guide pulley 12, multiple second guide pulleys 22, a third guide pulley 33, a movable pulley 61, and a fourth guide pulley 34, and is fixed to the intermediate beam 215 connecting the first crossbeam 211 and the second crossbeam 212. The support assembly 70 is positioned between the first guide pulley 12 and the adjacent second guide pulley 22 to ensure that the traction component 42 remains stable during movement, preventing the traction component 42 from swaying or sagging due to excessive length or weight, which would affect the safety and accuracy of the hoisting.

[0094] See Figure 1 , Figures 3 to 5 The replacement device also includes a mobile platform 80, which includes a platform body 81, a walking component 82, and a traction component 83. The platform body 81 is connected to the walking component 82, and the walking component 82 is movably mounted on the second support component 20. The traction component 83 includes a traction wheel 831, a traction wheel frame 832, and a traction rope 833. The traction wheel frame 832 is mounted on the second support component 20, and the traction wheel 831 is rotatably mounted on the traction wheel frame 832. The traction rope 833 has a first free end and a second free end. The first free end is connected to the walking component 82, and the second free end is wound around the traction wheel 831 and connected to the second support component 20.

[0095] The main platform 81 is used to store tools needed for wind turbine operation and maintenance, such as wrenches and screwdrivers, as well as a standing area for maintenance personnel. The main platform 81 is surrounded by guardrails made of stainless steel pipes, with the spacing between the guardrails adjusted as needed to prevent maintenance personnel or tools from accidentally falling while working on the platform.

[0096] The walking assembly 82 is connected to the platform body 81 and is movably mounted on the second support assembly 20. The walking assembly 82 includes walking wheels 822 and walking wheel frames 821. The platform body 81 is connected to the walking wheel frames 821, and the walking wheels 822 are spaced apart from the walking wheel frames 821, abutting against the second support assembly 20. The walking wheels 822 use rubber tires, providing good friction and shock absorption.

[0097] The traction wheel frame 832 is located on the second support assembly 20. The traction wheel frame 832 can be made of cast steel, providing high strength and stability. The traction wheel frame 832 is a rectangular frame, and the traction wheel 831 is rotatably mounted on it. The bearings of the traction wheel 831 are high-precision rolling bearings, ensuring flexible rotation. Protective baffles made of aluminum alloy are provided on both sides of the traction wheel 831 to prevent the traction rope 833 from detaching from the traction wheel 831 during operation.

[0098] This is equivalent to fixing the first free ends of the two traction ropes 833 to the fixed points on the top surface of the two traveling wheel frames 821 that move along the second support component 20, respectively. The second free ends of the two traction ropes 833 are wound around the traction wheel 831 on the traction wheel frame 832 fixed on the main beam segment of the second support component 20 and then fixed in the opposite direction to the support frame of the second support component 20. Sufficient length needs to be provided for the traction ropes 833 to ensure the maximum displacement of the moving platform 80.

[0099] During wind turbine operation and maintenance, when the position of the platform body 81 needs to be adjusted, the traction rope 833 can pull the traveling component 82 to move on the second support component 20 by rotating the traction wheel 831. For example, when maintenance personnel need to reach the root of the wind turbine blades for inspection, they can simultaneously pull the second free ends of the two traction ropes 833. The moving platform 80 can then move forward along the upper flange of the beam segment of the first crossbeam 211 and the second crossbeam 212 to a predetermined position via the four traveling wheels. This predetermined position corresponds to multiple positioning holes provided on the first crossbeam 211 and the second crossbeam 212. By inserting the fixing pin into the positioning hole at the predetermined position to which the moving platform 80 has moved, the moving platform 80 can be fixed on the first crossbeam 211 and the second crossbeam 212, facilitating installation work by maintenance personnel.

[0100] After the maintenance personnel have finished their operation, they can simultaneously pull the first free ends of the two traction ropes 833, and the moving platform 80 will retract to its original position along the first crossbeam 211 and the second crossbeam 212.

[0101] Continue reading 1 to 1 Figure 4 In some embodiments of this utility model, the replacement device further includes an auxiliary suspension assembly 90; a reinforcing support assembly 23 is provided on the second support assembly 20, and the auxiliary suspension assembly 90 is disposed on the reinforcing support assembly 23. The auxiliary suspension assembly 90 is used to transfer the parts.

[0102] The reinforcing support assembly 23 is installed on the second support assembly 20 and mainly consists of a support beam, diagonal braces, and reinforcing plates. The support beam is made of I-beams, and the diagonal braces are made of steel pipes. The diagonal braces are connected to the support beam and the second support assembly 20 by welding or bolting to form a triangular structure. Reinforcing plates are welded to the connection points between the support beam and the diagonal braces, as well as the connection points between the support beam and the second support assembly 20, to enhance the strength of the connection areas.

[0103] The main function of the reinforcing support assembly 23 is to provide stable support for the auxiliary suspension assembly 90. During wind turbine operation, the turbine vibrates and sways due to external forces such as wind. The reinforcing support assembly 23 can withstand these external forces, ensuring that the auxiliary suspension assembly 90 will not be in danger due to foundation instability when transferring components. For example, in strong winds, when the cantilever crane lifts heavy components, the reinforcing support assembly 23 can effectively resist the lateral forces generated by the wind, ensuring the normal operation of the cantilever crane.

[0104] The auxiliary suspension assembly 90 includes a cantilever crane or a serpentine crane. The second support assembly 20 has a rectangular frame structure to facilitate the installation and movement of the mobile trolley 30. The reinforcing support assembly 23 is mounted on the second support assembly 20 and has an overall triangular shape to increase stability. The reinforcing support assembly 23 can also be formed by welding or bolting steel pipes or I-beams to form a frame structure.

[0105] In wind turbine operation and maintenance scenarios, when the auxiliary suspension assembly 90 is a cantilever crane, the cantilever is made of high-strength alloy steel with a box-shaped cross-section, which provides good bending resistance. The cantilever is connected to the column via a slewing bearing.

[0106] The lifting mechanism of the cantilever crane is installed at the end of the cantilever and includes a motor, a reducer, a drum, and a brake. The motor is a three-phase asynchronous motor, connected to the reducer via a coupling. The drum is used to wind the wire rope. The brake is an electromagnetic block brake, ensuring safety when lifting components.

[0107] During wind turbine operation and maintenance, such as when replacing a wind turbine gearbox, the hook of the jib crane is lowered to a suitable height, and workers connect a specialized lifting tool to the gearbox. Then, the motor starts, driving the drum to rotate via a reducer. The wire rope on the drum begins to wind up, thus slowly lifting the gearbox. Because the jib crane can rotate and extend flexibly within a certain range, it can accurately move the gearbox to a designated location, such as from the wind turbine nacelle to the maintenance platform.

[0108] When the auxiliary suspension assembly 90 is a serpentine crane, the boom of the serpentine crane consists of multiple flexible segments, similar to the body structure of a snake. Each segment is made of high-strength aluminum alloy, and the segments are connected by specially designed joints, allowing for multi-degree-of-freedom rotation, enabling the boom of the serpentine crane to bend and extend flexibly. The base of the serpentine crane is fixed to the reinforcing support assembly 23 via a flange connection.

[0109] The hoisting device of the serpentine crane is installed at the end of the boom, and includes a small electric winch and pulley block. The electric winch raises and lowers the hook by controlling its forward and reverse rotation.

[0110] In wind turbine operation and maintenance scenarios, serpentine cranes offer unique advantages for transferring irregularly shaped components located in confined spaces. For example, when replacing small sensors inside wind turbine blades, a serpentine crane can bend its boom into a suitable shape to reach deep into the blade. After the hook descends near the sensor, workers connect the lifting equipment to the sensor, then start the electric winch to lift the sensor and transfer it to an external maintenance platform. Serpentine cranes offer high operational flexibility, allowing for component transfer within complex wind turbine structures without space constraints.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A replacement device for replacing components inside a wind turbine nacelle, characterized in that, include: The support mechanism includes a first support component and a second support component, wherein the first support component is disposed at a first preset installation position and the second support component is disposed at a second preset installation position; A mobile trolley is movably mounted on the second support assembly; The driving mechanism includes a first driving component and a second driving component. A traction member extending from the first driving component is wound around the first support component, the second support component, and the mobile trolley, and is fixed to the end of the second support component. The second driving component is disposed on the second support component and connected to the mobile trolley, and is used to drive the mobile trolley to perform translational movement. A lifting device suitable for lifting components, the lifting device being suspended on a traction member passing through the moving trolley, and suitable for lifting and lowering under the traction of the traction member.

2. The replacement device according to claim 1, characterized in that, The first support assembly includes a first support frame and a first guide pulley. The first support frame is disposed at the first preset installation position, and the first guide pulley is disposed at the first support frame. The second support assembly includes a second support frame and a plurality of second guide pulleys. The second support frame is disposed at the second preset installation position, and the plurality of second guide pulleys are spaced apart from the second support frame. The traction component is sequentially wound around the first guide pulley, a plurality of second guide pulleys and the moving trolley, and fixed to the end of the second support assembly.

3. The replacement device according to claim 2, characterized in that, The first support frame includes a first column and a truss. The first column is spaced apart at the first preset installation position, and the truss is mounted on the first column. The first guide pulley is mounted on the truss.

4. The replacement device according to claim 2, characterized in that, The second support frame includes a first crossbeam, a second crossbeam, and multiple second columns; Multiple second columns are spaced apart at the second preset installation positions, and the first beam and the second beam are respectively mounted on at least two second columns, with the first beam and the second beam arranged in parallel. A connecting column is provided between two adjacent second columns, and multiple second guide pulleys are respectively provided on the connecting column, the second column and the corresponding crossbeam.

5. The replacement device according to claim 4, characterized in that, The mobile trolley includes a frame and a lifting component; The vehicle frame is mounted on the first crossbeam and the second crossbeam, and the second drive assembly is mounted on the first crossbeam and / or the second crossbeam and connected to the vehicle frame, for driving the vehicle frame to perform linear reciprocating motion along the first crossbeam and the second crossbeam; The lifting component is mounted on the vehicle frame, and the lifting component is symmetrically provided with a third guide pulley and a fourth guide pulley near both ends; The lifting device is equipped with a movable pulley, and the traction member is sequentially wound around the first guide pulley, a plurality of second guide pulleys, the third guide pulley, the movable pulley, and the fourth guide pulley, and is fixed to the intermediate beam connected between the first crossbeam and the second crossbeam.

6. The replacement device according to claim 5, characterized in that, The frame is provided with movable parts near both ends, and the first crossbeam and the second crossbeam are provided with mating parts that cooperate with the movable parts to move.

7. The replacement device according to claim 2, characterized in that, It also includes a support assembly located between the first guide pulley and the adjacent second guide pulley, the support assembly being used to support the traction member.

8. The replacement device according to any one of claims 1 to 7, characterized in that, It also includes a mobile platform, which comprises a platform body, a walking component, and a traction component; The platform body is connected to the walking component, which is movably mounted on the second support component. The traction component includes a traction wheel, a traction wheel frame, and a traction rope. The traction wheel is mounted on the second support component and rotatably mounted on the traction wheel frame. The traction rope has a first free end and a second free end. The first free end is connected to the walking component, and the second free end is wound around the traction wheel and connected to the second support component.

9. The replacement device according to claim 8, characterized in that, The walking assembly includes a walking wheel frame and walking wheels; The platform body is connected to the walking wheel frame, the walking wheels are spaced apart on the walking wheel frame, and the walking wheels abut against the second support component.

10. The replacement device according to any one of claims 1 to 7, characterized in that, It also includes auxiliary suspension components; The second support assembly is provided with a reinforcing support assembly, and the auxiliary suspension assembly is disposed on the reinforcing support assembly. The auxiliary suspension assembly is used to transfer the components.

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