Replacement device

Abstract

The invention relates to the technical field of fan operation and maintenance, and provides a replacement 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 mounting 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] The present invention relates to the technical field of fan operation and maintenance, and particularly to a replacement device. Background Art

[0002] In the field of wind power generation, the replacement of fan transformers is an important part of fan operation and maintenance work. At present, when replacing fan transformers, large lifting facilities are generally used to complete this work. With the continuous development of the wind power industry, the installed capacity of fans shows an increasing trend. The increase in the installed capacity of fans has led to a continuous increase in the height of fans. This change has brought new challenges to the replacement work of fan transformers.

[0003] Due to the increase in fan height, when using large lifting facilities to replace transformers, in order to meet the lifting requirements, the load of the required lifting facilities must be greater to be able to bear the heavier weight of the transformer; at the same time, the lifting height also needs to be increased accordingly to reach the replacement of fan transformers at higher positions.

[0004] However, the increase in the load and lifting height of large lifting facilities has increased the fan operation and maintenance costs. Due to the high purchase cost of large lifting facilities themselves, certain manpower, material resources, and financial resources are required for transportation and maintenance, etc., thus correspondingly increasing the fan operation and maintenance costs. Summary of the Invention

[0005] The present invention provides a replacement device to solve at least one of the above technical defects in the prior art, replace large lifting facilities to replace components (such as fan transformers), and can effectively reduce the fan operation and maintenance costs.

[0006] The present invention provides a replacement device, including: A support mechanism, including a first support component and a second support component, the first support component is arranged at a first preset installation position, and the second support component is arranged at a second preset installation position; A moving trolley, movably arranged on the second support component; A driving mechanism, including a first driving component and a second driving component, a traction member led out by the first driving component is wound around the first support component, the second support component, and the moving trolley, and is fixed to the end of the second support component; the second driving component is arranged on the second support component and is connected to the moving trolley for driving the moving trolley to perform translational motion; A lifting appliance, suitable for lifting components, the lifting appliance is suspended on the traction member passing through the moving trolley, and is suitable for performing lifting motion under the traction of the traction member.

[0007] According to the replacement device provided by the present invention, 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 on 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 and disposed on the second support frame; The traction member is sequentially wound around the first guide pulley, the plurality of second guide pulleys and the moving trolley, and is fixed to the end of the second support assembly.

[0008] According to the replacement device provided by the present invention, the first support frame includes a first column and a truss. The first column is spaced apart and disposed at the first preset installation position, and the truss is erected on the first column; the first guide pulley is disposed on the truss.

[0009] According to the replacement device provided by the present invention, the second support frame includes a first cross beam, a second cross beam and a plurality of second columns; The plurality of second columns are spaced apart and disposed at the second preset installation position. The first cross beam and the second cross beam are respectively erected on at least two of the second columns, and the first cross beam and the second cross beam are arranged in parallel; A connecting column is provided between two adjacent second columns, and the plurality of second guide pulleys are respectively disposed on the connecting column, the second column and the corresponding cross beam.

[0010] According to the replacement device provided by the present invention, the moving trolley includes a vehicle frame and a lifting member; The vehicle frame is erected on the first cross beam and the second cross beam. The second driving assembly is disposed on the first cross beam and / or the second cross beam and is connected to the vehicle frame for driving the vehicle frame to perform linear reciprocating motion along the first cross beam and the second cross beam; The lifting member is disposed on the vehicle frame, and a third guide pulley and a fourth guide pulley are symmetrically disposed at positions near both ends of the lifting member; A movable pulley is provided on the sling. The traction member is sequentially wound around the first guide pulley, the plurality of second guide pulleys, the third guide pulley, the movable pulley and the fourth guide pulley, and is fixed to an intermediate beam connected between the first cross beam and the second cross beam.

[0011] According to the replacement device provided by the present invention, moving members are respectively provided at positions near both ends of the vehicle frame, and cooperating members for moving in cooperation with the moving members are provided on both the first cross beam and the second cross beam.

[0012] The replacement device provided by the present invention further includes a supporting component, which is arranged at a position between the first guiding pulley and the adjacent second guiding pulley, and is used for supporting the traction member.

[0013] The replacement device provided by the present invention further includes a mobile platform, which includes a platform main body, a traveling component and a traction component; The platform main body is connected to the traveling component, and the traveling component is movably arranged on the second supporting component; the traction component includes a traction wheel, a traction wheel frame and a traction rope. The traction wheel frame is arranged on the second supporting component, the traction wheel is rotatably arranged 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 traveling component, and the second free end is wound around the traction wheel and connected to the second supporting component.

[0014] For the replacement device provided by the present invention, the traveling component includes a traveling wheel frame and traveling wheels; The platform main body is connected to the traveling wheel frame, the traveling wheels are arranged at intervals on the traveling wheel frame, and the traveling wheels are abutted against the second supporting component.

[0015] The replacement device provided by the present invention further includes an auxiliary suspension component; A strengthening support component is arranged on the second supporting component, and the auxiliary suspension component is arranged on the strengthening support component and is used for transferring components.

[0016] For the replacement device provided by the present invention, by arranging a support mechanism, a mobile trolley and a driving mechanism, the mobile trolley is movably arranged on the second supporting component. In the driving mechanism, the traction member of the second driving component is wound around the driving member, one end of which extends out from the driving member, is wound around the first supporting component, the second supporting component and the mobile trolley, and is fixed to the end of the second supporting component; the second driving component is arranged on the second supporting component and is connected to the mobile trolley for driving the mobile trolley to perform a translational movement; the spreader is suspended on the traction member passing through the mobile trolley and is adapted to perform a lifting movement under the traction of the traction member. Instead of using large-scale lifting facilities to replace components (such as a wind turbine transformer), the operation and maintenance cost of the wind turbine can be effectively reduced.

[0017] Since the spreader is controlled to lift by the first driving component (winch), and the mobile trolley is pushed by the second driving component (electric push rod) to perform a translational movement on the second supporting component to realize the replacement work of the component (wind turbine transformer), the replacement of components in the wind turbine nacelle no longer depends on large-scale lifting facilities, thereby avoiding high maintenance costs such as complex maintenance and professional detection brought by the large load and high lifting height required by large-scale lifting facilities, reducing the equipment purchase cost, and lowering the transportation and storage costs.

[0018] Moreover, by using the driving member (winch) of the first driving assembly to control the lifting movement of the lifting appliance and using the second driving assembly (electric push rod) to push the moving trolley and the lifting appliance for translational movement, the operation of the fan transformer can be carried out accurately. Compared with the possible operation accuracy limitations of large-scale lifting facilities, this method is more conducive to accurately replacing the transformer in the specific environment of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is one of the schematic structural diagrams of the replacement device provided by the embodiment of the present invention.

[0021] Figure 2 is Figure 1 the partial structural schematic diagram of the replacement device shown.

[0022] Figure 3 is another schematic structural diagram of the replacement device provided by the embodiment of the present invention.

[0023] Figure 4 is Figure 3 the partial structural schematic diagram of the replacement device shown.

[0024] Figure 5 is Figure 4 the enlarged view of part A in

[0025] Reference Signs: 10. First support assembly; 11. First support frame; 111. First column; 112. Truss; 12. First guiding pulley; 20. Second support assembly; 21. Second support frame; 211. First cross beam; 212. Second cross beam; 213. Second column; 214. Connecting column; 215. Intermediate beam; 216. Fitting; 22. Second guiding pulley; 23. Reinforcing support assembly; 30. Moving trolley; 31. Frame; 32. Lifting member; 33. Third guiding pulley; 34. Fourth guiding pulley; 35. Moving member; 40. First driving assembly; 41. Driving member; 42. Towing member; 50. Second driving assembly; 60. Lifting appliance; 61. Movable pulley; 70. Supporting assembly; 80. Mobile platform; 81. Platform main body; 82. Traveling assembly; 821. Traveling wheel frame; 822. Traveling wheel; 83. Traction assembly; 831. Traction wheel; 832. Traction wheel frame; 833. Traction rope; 90. Auxiliary suspension assembly; P1. First preset installation position; P2. Second preset installation position. Detailed implementation manners

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0028] In the embodiments of the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art may combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0030] Figure 1 It is one of the structural schematic diagrams of the replacement device provided by the embodiment of the present invention. Figure 2 is Figure 1 The partial structural schematic diagram of the replacement device shown.

[0031] Refer to Figure 1 and Figure 2 The embodiment of the present invention 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 driving mechanism, and a lifting tool 60.

[0032] The support mechanism includes a first support assembly 10 and a second support assembly 20. The first support assembly 10 is disposed at a first preset installation position P1, and the first preset installation position P1 may be the rear frame of the nacelle of the fan, or may also be the ground or the tower platform of the fan. The second support assembly 20 is installed at a second preset installation position P2 at a certain distance from the first support assembly 10. The installation distance between the first support assembly 10 and the second support assembly 20 is determined according to the movement track of the component (such as the fan transformer), and the second preset installation position P2 may be the installation bolt of the main bearing seat inside the fan nacelle.

[0033] Wherein, the structures of the first support assembly 10 and the second support assembly 20 may both be gantry frame structures welded by I-beams and columns, etc. The surfaces of the first support assembly 10 and the second support assembly 20 are both subjected to rust prevention treatment to adapt to the complex working environment.

[0034] The moving trolley 30 is movably disposed on the second support assembly 20 and can move relative to the second support assembly 20 to change its own position. The moving trolley 30 may be in rolling fit or sliding fit with the second support assembly 20. When the moving trolley 30 is in rolling fit with the second support assembly 20, rollers are provided on the main body structure of the moving trolley 30; when the moving trolley 30 is in sliding fit with the second support assembly 20, sliders may be provided on the main body structure of the moving trolley 30.

[0035] The driving mechanism includes a first driving assembly 40 and a second driving assembly 50. The first driving assembly 40 includes a driving member 41 and a traction member 42. The driving member 41 is disposed at the position where the first support assembly 10 is located. The traction member 42 is wound around the driving member 41. After one end thereof is led out from the driving member 41, it is wound around the first support assembly 10, the second support assembly 20, and the moving trolley 30 and fixed to the end of the second support assembly 20; the second driving assembly 50 is disposed on the second support assembly 20 and then connected to the moving trolley 30 for driving the moving trolley 30 to perform translational motion.

[0036] Among them, the driving member 41 can be a winch, and the winch can be installed on the rear frame of the nacelle of the wind turbine. The traction member 42 is a high-strength steel wire rope, and the diameter of the steel wire rope is determined according to the weight of the component to be hoisted. 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 pulley on the second support assembly 20, and then wound around the pulley on the moving trolley 30, and finally fixed at the end of the second support assembly 20.

[0037] The second driving assembly 50 is an electric push rod, or a combination of an electric push rod and a linear guide rail. The electric push rod is installed on the second support assembly 20, the electric push rod is connected to the moving trolley 30, and the linear guide rail provides guidance for the movement of the moving trolley 30. When the electric push rod expands and contracts, it pushes the moving trolley 30 to perform a translational movement on the second support assembly 20.

[0038] The lifting device 60 is suitable for lifting components in the nacelle of the wind turbine. The lifting device 60 is suspended on the traction member 42 passing through the moving trolley 30 and is suitable for performing a lifting movement under the traction of the traction member 42.

[0039] Among them, the lifting device 60 can be a structure composed of a balance beam, a plurality of high-strength alloy steel hooks and lifting chains. When hoisting corresponding components (such as a wind turbine transformer), the hooks are connected to the preset lifting points on the components, and the balance beam is suspended on the traction member 42 (steel wire rope) passing through the moving trolley 30 through a fixed pulley. Under the traction of the traction member 42, through the forward and reverse rotation of the winch, the lifting device 60 can realize the lifting movement of the component. For example, when the 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 specified height under the action of the traction member 42.

[0040] It can be understood that the replacement device provided by the embodiment of the present invention, by setting the support mechanism, the moving trolley 30 and the driving mechanism, enables the moving trolley 30 to be movably arranged on the second support assembly 20. In the driving mechanism, the traction member 42 of the second driving assembly 50 is wound around the driving member 41, one end of which is led out from the driving member 41, wound around the first support assembly 10, the second support assembly 20 and the moving trolley 30, and fixed at the end of the second support assembly 20; the second driving assembly 50 is arranged on the second support assembly 20 and is connected to the moving trolley 30 for driving the moving trolley 30 to perform a translational movement; the lifting device 60 is suspended on the traction member 42 passing through the moving trolley 30 and is suitable for performing a lifting movement under the traction of the traction member 42. It can replace large-scale lifting facilities to replace components (such as transformers) in the nacelle of the wind turbine, and can effectively reduce the operation and maintenance costs of the wind turbine.

[0041] Since the lifting and lowering of the spreader 60 is controlled by the driving member 41 (winch) of the first driving assembly 40, and the moving trolley 30 is pushed by the second driving assembly 50 (electric push rod) to perform a translational movement on the second supporting assembly 20, so as to realize the replacement work of components (fan transformers), the replacement of components in the fan nacelle no longer depends on large-scale lifting facilities, thereby avoiding high maintenance costs such as complex maintenance and professional inspection caused by the large load and high lifting height required by large-scale lifting facilities, reducing the equipment purchase cost, and lowering the transportation and storage costs.

[0042] Moreover, by using the driving member 41 (winch) of the first driving assembly 40 to control the lifting and lowering movement of the spreader 60, and using the second driving assembly 50 (electric push rod) to push the moving trolley 30 and the spreader 60 to perform a translational movement, the fan transformer can be accurately operated. Compared with the possible operation accuracy limitations of large-scale lifting facilities, this method is more conducive to accurately replacing the transformer in the specific environment of the fan.

[0043] Due to the large load and high lifting height of large-scale lifting facilities, there are relatively large safety risks during the operation process, such as the falling of heavy objects. In the present invention, the driving member 41 (winch) of the first driving assembly 40 and the second driving assembly 50 (electric push rod) are combined to form the driving assembly of the replacement device. The overall structure of the replacement device is relatively small and the operation is relatively flexible, which reduces the safety risks during the operation process to a certain extent.

[0044] Continue to refer to Figure 1 , in some embodiments of the present invention, the first supporting assembly 10 includes a first support frame 11 and a first guiding pulley 12. The first support frame 11 is arranged at the first preset installation position P1, and the first guiding pulley 12 is arranged on the first support frame 11. The second supporting assembly 20 includes a second support frame 21 and a plurality of second guiding pulleys 22. The second support frame 21 is arranged at the second preset installation position P2, and the plurality of second guiding pulleys 22 are arranged at intervals on the second support frame 21. The traction member 42 is sequentially wound around the first guiding pulley 12, the plurality of second guiding pulleys 22 and the moving trolley 30, and is fixed to the end of the second supporting assembly 20.

[0045] Among them, the first support frame 11 is formed by welding or bolt connection of 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 space layout of the installation site. The first guiding pulley 12 is installed at the top of the first support frame 11, and protective baffles are installed on both sides of the pulley to prevent the traction member 42 (steel wire rope) from slipping out of the groove during operation.

[0046] The second support frame 21 is also formed by welding or bolt - connecting steel pipes and I - beams. The main shape of the second support frame 21 can be a rectangular structure to adapt to the horizontal movement range requirements of material hoisting. A plurality of second guiding pulleys 22 are installed at intervals on the second support frame 21.

[0047] After the traction member 42 (steel wire rope) is led out from the driving member 41 (such as a winch), it first winds around the top groove of the first guiding pulley 12. Then, the steel wire rope extends to the second support assembly 20 and winds around a plurality of second guiding pulleys 22 in sequence. When winding around each second guiding pulley 22, the running direction of the steel wire rope is adjusted according to the structure of the second support frame 21 and the requirements of material hoisting. Then, the steel wire rope winds around the relevant pulley assembly of the moving trolley 30 and is finally fixed at the end of the second support assembly 20. There is a special steel wire rope fixing device at the end, which consists of a high - strength steel clamp and a fixing seat. The steel clamp tightly clamps the end of the steel wire rope, and the fixing seat is connected to the end cross - beam of the second support frame 21 by bolts.

[0048] Furthermore, the first support frame 11 includes a first column 111 and a truss 112. The first column 111 is arranged at intervals at the first preset installation position P1, and the truss 112 is erected on the first column 111; the first guiding pulley 12 is arranged on the truss 112.

[0049] Among them, in the fan operation and maintenance scenario, the first column 111 is made of high - strength alloy steel. There are two first columns 111 provided, and the two first columns 111 are arranged at intervals 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 plate, and the truss 112 is welded or bolt - connected to the two first columns 111.

[0050] The first guiding pulley 12 is installed on the truss 112 through a bearing seat, and a high - precision rolling bearing is installed in the bearing seat to ensure the flexible rotation of the first guiding pulley 12. During the fan operation and maintenance process, the function of the first guiding pulley 12 is to guide the running direction of the traction member 42. Due to the special structure and working environment of the rear frame of the nacelle, the installation angle of the first guiding pulley 12 can be adaptively adjusted according to the rotation plane of the fan blade and the requirements of maintenance operations to ensure that the traction member 42 can accurately cooperate with the first guiding pulley 12 during operation. At the same time, in order to prevent the traction member 42 from slipping out of the groove during operation, protective baffles are installed on both sides of the first guiding pulley 12.

[0051] In addition, in order to improve the structural strength of the first support frame 11, a plurality of strengthening members are connected to both the first column 111 and the truss 112, and the strengthening members are made of steel plates or steel pipes.

[0052] Further, the second support frame 21 includes a first cross beam 211, a second cross beam 212, and a plurality of second columns 213; the plurality of second columns 213 are spaced apart and disposed at a second preset installation position P2, the first cross beam 211 and the second cross beam 212 are respectively mounted on at least two second columns 213, and the first cross beam 211 and the second cross beam 212 are arranged in parallel; a connecting column 214 is provided between two adjacent second columns 213, and a plurality of second guiding pulleys 22 are respectively disposed on the connecting column 214, the second columns 213, and the corresponding cross beams.

[0053] Among them, in the fan operation and maintenance scenario, the second columns 213 can be made of high-strength stainless steel. The plurality of second columns 213 are spaced apart and disposed at the second preset installation position P2 (i.e., the installation bolts of the main bearing seat in the fan nacelle). In this embodiment, four second columns 213 are taken as an example for illustration, and the four second columns 213 are arranged around the main bearing seat in the fan nacelle. Both the first cross beam 211 and the second cross beam 212 are made of I-beams. The first cross beam 211 and the second cross beam 212 are respectively mounted on two second columns 213 and are arranged in parallel with each other. The lengths of the first cross beam 211 and the second cross beam 212 are determined according to the size of the fan and the maintenance operation range. The connection between the first cross beam 211, the second cross beam 212 and the second columns 213 is by welding or bolt connection.

[0054] A connecting column 214 is provided between two adjacent second columns 213, and 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 bolt connection, and the length of the connecting column 214 is determined according to the distance between two adjacent second columns 213.

[0055] A part of the plurality of second guiding pulleys 22 are disposed on the connecting column 214, and some second guiding pulleys 22 are arranged on the second columns 213, and they are mainly used to adjust the running direction of the traction member 42 (such as a steel wire rope). Second guiding pulleys 22 are also arranged on the first cross beam 211 and the second cross beam 212. In the fan operation and maintenance scenario, when hoisting large components (such as a fan transformer), the second guiding pulleys 22 on the cross beams can share a part of the traction pressure to ensure the smooth running of the steel wire rope during the entire hoisting process. At the same time, the positions and installation angles of these pulleys are calculated to adapt to the hoisting path and operation requirements of the fan transformer.

[0056] Continue to refer to Figure 1 and Figure 2, in some embodiments of the present invention, the mobile trolley 30 includes a frame 31 and a hoisting member 32; the frame 31 is mounted on the first cross beam 211 and the second cross beam 212, and the second driving assembly 50 (electric push rod) is disposed on at least one of the first cross beam 211 and the second cross beam 212 and is connected to the frame 31 for driving the frame 31 to perform linear reciprocating motion along the first cross beam 211 and the second cross beam 212.

[0057] Among them, the frame 31 is mounted on the first cross beam 211 and the second cross beam 212. The contact part with the cross beam can be set as a smooth surface, and both ends of the frame 31 can directly make sliding contact with the corresponding parts of the cross beam. Thus, the second driving assembly 50 (electric push rod) pushes the frame 31 to perform linear reciprocating motion along the cross beam.

[0058] The hoisting member 32 is disposed on the frame 31 and is mainly used for installing guiding pulleys. That is, the third guiding pulley 33 and the fourth guiding pulley 34 are symmetrically provided at positions near both ends of the hoisting member 32, and are located on both sides of the frame 31 relative to the third guiding pulley 33 and the fourth guiding pulley 34. When hoisting the transformer, the third guiding pulley 33 and the fourth guiding pulley 34 can guide the traction member 42 to accurately wind around the hoisting member 32, ensuring the stable lifting and lowering of the lifting tool 60.

[0059] A movable pulley 61 is provided on the lifting tool 60. The movable pulley 61 is a key component for realizing the labor-saving hoisting of the transformer. Through the action of the movable pulley 61, the tension required for the traction member 42 can be effectively reduced. The traction member 42 is sequentially wound around the first guiding pulley 12, a plurality of second guiding pulleys 22, the third guiding pulley 33, the movable pulley 61 and the fourth guiding pulley 34, and is fixed to the intermediate beam 215 connected between the first cross beam 211 and the second cross beam 212.

[0060] Equivalently, the traction member 42 (such as a steel wire rope) is led out from the driving member 41 (such as a winch), first wound around the first guiding pulley 12 on the truss 112 of the first support frame 11 to adjust the initial direction of the steel wire rope so that the steel wire rope extends towards the direction of the second support frame 21. Then, the steel wire rope is sequentially wound around a plurality of second guiding pulleys 22 on the second support frame 21. The plurality of second guiding pulleys 22 are distributed on the connecting column 214, the second column 213 and the corresponding cross beam to further adjust the path of the steel wire rope so that the steel wire rope can accurately reach the hoisting member 32 on the mobile trolley 30.

[0061] Then, the steel wire rope is wound around the third guiding pulley 33 on the hoisting member 32, enters the movable pulley 61 of the lifting tool 60, then comes out from the movable pulley 61 and is wound around the fourth guiding pulley 34, and finally is fixed to the intermediate beam 215 connected between the first cross beam 211 and the second cross beam 212. The steel wire rope is fixed on the intermediate beam 215 by a steel wire rope clamp to ensure that the traction member 42 will not loosen or slip during the process of hoisting the transformer.

[0062] Continue reading Figure 1 and Figure 2 In some embodiments of the present invention, moving parts 35 are respectively provided near both ends of the frame 31, and matching parts 216 for moving in coordination with the moving parts 35 are provided on the first cross beam 211 and the second cross beam 212.

[0063] The moving member 35 may include a slider or a moving wheel.

[0064] When the moving member 35 includes a slider, the slider is made of wear-resistant engineering plastic, and the upper surface of the slider is connected to the end of the frame 31 by bolts to ensure a firm connection. A groove is provided on the lower surface of the slider, and the groove cooperates with the matching piece 216 on the first crossbeam 211 and the second crossbeam 212 to guide and prevent the slider from lateral deviation.

[0065] The matching pieces 216 on the first crossbeam 211 and the second crossbeam 212 are convex strips or slide rails that match the grooves of the slider. The convex strips or slide rails are made of stainless steel to prevent rust from affecting the sliding of the slider. The convex strips or slide rails are arranged along the length direction of the crossbeam to ensure that the slider can smoothly perform linear reciprocating motion on the crossbeam.

[0066] During the operation and maintenance of the wind turbine, for example, when hoisting the transformer, the frame 31 moves on the crossbeam through the slider. Due to the low friction design between the slider and the mating piece 216, the frame 31 can move with a small driving force while ensuring the accuracy of the movement. When the transformer needs to be accurately moved to a specific location for maintenance, the slider can enable the frame 31 to be accurately positioned on the crossbeam.

[0067] When the moving part 35 includes a moving wheel, the moving wheel is made of high-strength alloy steel, and a rubber anti-skid layer is arranged on the rim surface of the moving wheel. The rubber anti-skid layer can not only increase the friction between the moving wheel and the beam to prevent the moving wheel from slipping when the fan generates vibration during operation, but also play a certain buffering role to protect the surface of the beam.

[0068] The matching piece 216 on the first cross beam 211 and the second cross beam 212 is a track. The track is made of I-beam, and the upper surface of the track is a plane, which contacts the rubber anti-skid layer of the moving wheel to provide support and guidance for the moving wheel.

[0069] In wind turbine operation and maintenance, for example, when transporting the wind turbine transformer from inside or outside the wind turbine to a designated location, the frame 31 moves on the rails of the crossbeam through the moving wheels. Even if the wind turbine vibrates greatly or shakes slightly suddenly, the moving wheels will not fall off the rails, ensuring smooth operation of hoisting the transformer.

[0070] Figure 3It is the second schematic structural diagram of the replacement device provided by the embodiment of the present invention. Figure 4 It is Figure 3 The partial structural schematic diagram of the replacement device shown. Figure 5 It is Figure 4 The enlarged view of part A in

[0071] Continue to refer to Figure 1 and at the same time refer to Figure 3 In some embodiments of the present invention, the replacement device further includes a supporting component 70. The supporting component 70 is arranged at the position between the first guiding pulley 12 and the adjacent second guiding pulley 22. The supporting component 70 is used to support the towing member 42.

[0072] In the fan operation and maintenance scenario, when it is necessary to hoist the transformer, the supporting component 70 is used to support the towing member 42. For example, the towing member 42 is successively wound around the first guiding pulley 12, a plurality of second guiding pulleys 22, the third guiding pulley 33, the movable pulley 61 and the fourth guiding pulley 34, and is fixed to the intermediate beam 215 connected between the first cross beam 211 and the second cross beam 212. The supporting component 70 is arranged at the position between the first guiding pulley 12 and the adjacent second guiding pulley 22 to ensure that the towing member 42 remains stable during movement, and prevent the towing member 42 from shaking or sagging due to being too long or too heavy, which affects the safety and accuracy of hoisting.

[0073] Refer to Figure 1 and Figures 3 to 5 The replacement device further includes a mobile platform 80. The mobile platform 80 includes a platform main body 81, a traveling component 82 and a towing component 83. The platform main body 81 is connected to the traveling component 82. The traveling component 82 is movably arranged on the second supporting component 20. The towing component 83 includes a towing wheel 831, a towing wheel frame 832 and a towing rope 833. The towing wheel frame 832 is arranged on the second supporting component 20. The towing wheel 831 is rotatably arranged on the towing wheel frame 832. The towing rope 833 has a first free end and a second free end. The first free end is connected to the traveling component 82. The second free end is wound around the towing wheel 831 and is connected to the second supporting component 20.

[0074] Among them, the platform main body 81 is used to store tools required for fan operation and maintenance, such as wrenches and screwdrivers, and for maintenance personnel to stand. Guardrails are provided around the platform main body 81. The guardrails are made of stainless steel pipes. The spacing between the guardrails is set according to requirements to prevent maintenance personnel or tools from accidentally falling when working on the platform.

[0075] The walking assembly 82 is connected to the platform main body 81 and is movably arranged on the second support assembly 20. The walking assembly 82 includes walking wheels 822 and a walking wheel frame 821. The platform main body 81 is connected to the walking wheel frame 821. The walking wheels 822 are spaced apart on the walking wheel frame 821, and the walking wheels 822 abut against the second support assembly 20. The walking wheels 822 are made of rubber tires, which can provide good friction and shock absorption effects.

[0076] Among them, the towing wheel frame 832 is arranged on the second support assembly 20. The towing wheel frame 832 can be made of cast steel, which has high strength and stability. The shape of the towing wheel frame 832 is a rectangular frame. The towing wheel 831 is rotatably arranged on the towing wheel frame 832. The bearings of the towing wheel 831 adopt high-precision rolling bearings, which can ensure the flexible rotation of the towing wheel 831. Protective baffles are arranged on both sides of the towing wheel 831. The baffles are made of aluminum alloy to prevent the towing rope 833 from detaching from the towing wheel 831 during operation.

[0077] Equivalently, the first free ends of the two towing ropes 833 are respectively fixedly connected to the fixed points on the upper top surface of the two walking wheel frames 821 that move along the second support assembly 20. The second free ends of the two towing ropes 833 are wound around the towing wheel 831 on the towing wheel frame 832 fixed to the main beam section of the second support assembly 20 and then fixedly connected to the support frame of the second support assembly 20 in the reverse direction. Sufficient length should be reserved for the towing ropes 833 to ensure the maximum displacement for the movable platform 80 to move.

[0078] During the operation and maintenance of the wind turbine, when the position of the platform main body 81 needs to be adjusted, by rotating the towing wheel 831, the towing rope 833 can pull the walking assembly 82 to move on the second support assembly 20. For example, when the maintenance personnel need to reach the root of the wind turbine blade for inspection, the maintenance personnel pull the second free ends of the two towing ropes 833 simultaneously. The movable platform 80 can move forward along the upper flange plates of the beam sections of the first cross beam 211 and the second cross beam 212 through the four walking wheels to a predetermined position. The predetermined position corresponds to a plurality of positioning holes provided on the first cross beam 211 and the second cross beam 212. Insert the fixed pin into the positioning hole at the predetermined position where the movable platform 80 moves to, and the movable platform 80 can be fixed on the first cross beam 211 and the second cross beam 212, so that the maintenance personnel can perform installation operations.

[0079] After the maintenance personnel have completed the operation, the first free ends of the two towing ropes 833 can be pulled simultaneously, and the movable platform 80 can retreat along the first cross beam 211 and the second cross beam 212 to the original position.

[0080] Continue to refer to Figures 1 to Figure 4, in some embodiments of the present invention, 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 arranged on the reinforcing support assembly 23, and the auxiliary suspension assembly 90 is used for transferring components.

[0081] The reinforcing support assembly 23 is arranged on the second support assembly 20 and mainly consists of a support beam, a diagonal brace, and a reinforcing plate. The support beam is made of an I-beam, the diagonal brace is made of a steel pipe, and the diagonal brace is connected to the support beam and the second support assembly 20 by welding or bolt connection to form a triangular structure. The reinforcing plates are respectively welded at the joints of the support beam and the diagonal brace and at the joints of the support beam and the second support assembly 20 to enhance the strength of the connection parts.

[0082] The main function of the reinforcing support assembly 23 is to provide stable support for the auxiliary suspension assembly 90. During the operation of the fan, due to the action of external forces such as wind force, the fan will vibrate and shake. The reinforcing support assembly 23 can withstand these external forces to ensure that the auxiliary suspension assembly 90 will not be in danger due to the instability of the foundation when transferring components. For example, in strong wind weather, when the jib crane lifts heavier components, the reinforcing support assembly 23 can effectively resist the lateral force generated by the wind force and ensure the normal operation of the jib crane.

[0083] Among them, the auxiliary suspension assembly 90 includes a jib crane or a snake-shaped crane. The second support assembly 20 is a rectangular frame structure to facilitate the installation and movement of the mobile trolley 30. The reinforcing support assembly 23 is arranged on the second support assembly 20, and the overall shape is a triangular structure to increase stability. The reinforcing support assembly 23 can also be welded or bolt-connected with steel pipes or I-beams to form a frame structure.

[0084] In the fan operation and maintenance scenario, when the auxiliary suspension assembly 90 is a jib crane, the jib of the jib crane is made of high-strength alloy steel, and its cross-section is a box structure, which can provide good bending resistance. The jib is connected to the column through a slew bearing.

[0085] The hoisting mechanism of the jib crane is installed at the end of the jib. The hoisting mechanism includes a motor, a reducer, a drum, and a brake. The motor is a three-phase asynchronous motor, and the motor is connected to the reducer through a coupling. The drum is used for winding the steel wire rope. The brake is an electromagnetic block brake, which can ensure the safety when lifting components.

[0086] During the operation and maintenance of the fan, for example, when replacing the gearbox of the fan, the hook of the jib crane descends to an appropriate height, and the staff connects a special lifting tool to the gearbox. Then, the motor starts, drives the drum to rotate through the reducer, and the steel wire rope on the drum starts to wind up, slowly lifting the gearbox. Since the jib crane can rotate and extend flexibly within a certain range, it can accurately transfer the gearbox to a designated position, such as from the fan nacelle to the maintenance platform.

[0087] When the auxiliary suspension assembly 90 is a snake-shaped crane, the boom of the snake-shaped crane consists of multiple bendable segments, similar to the body structure of a snake. Each segment is made of high-strength aluminum alloy, and the segments are connected by special joints, enabling multi-degree-of-freedom rotation, so that the boom of the snake-shaped crane can flexibly bend and extend. The root of the snake-shaped crane is fixed to the reinforced support assembly 23, and the fixing method is by flange connection.

[0088] The hoisting device of the snake-shaped crane is installed at the end of the boom. The hoisting device includes a small electric winch and a pulley block. By controlling the forward and reverse rotation of the winch, the lifting and lowering of the hook can be achieved.

[0089] In the scenario of fan operation and maintenance, the snake-shaped crane has unique advantages for transferring some parts with irregular shapes and located in narrow spaces. For example, when replacing some small sensors inside the fan blade, the snake-shaped crane can bend the boom into an appropriate shape and penetrate into the blade. After the hook descends near the sensor, the staff connects the lifting tool to the sensor, and then starts the electric winch to lift the sensor and transfer it to the external maintenance platform. The snake-shaped crane has high operation flexibility and can transfer parts inside the complex fan structure without being restricted by space.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A replacement device for replacing components inside a wind turbine nacelle, characterized in that, Comprising: A support mechanism, including a first support component and a second support component, the first support component is arranged at a first preset installation position, and the second support component is arranged at a second preset installation position; A moving trolley, movably arranged on the second support component; A driving mechanism, including a first driving component and a second driving component, a traction member led out by the first driving component is wound around the first support component, the second support component and the moving trolley, and is fixed to the end of the second support component; the second driving component is arranged on the second support component and is connected to the moving trolley for driving the moving trolley to perform translational motion; A lifting tool, suitable for lifting components, the lifting tool is suspended on the traction member passing through the moving trolley and is suitable for performing lifting motion under the traction of the traction member.

2. The replacement device according to claim 1, wherein The first support component includes a first support frame and a first guiding pulley, the first support frame is arranged at the first preset installation position, and the first guiding pulley is arranged on the first support frame; The second support component includes a second support frame and a plurality of second guiding pulleys, the second support frame is arranged at the second preset installation position, and the plurality of second guiding pulleys are spacedly arranged on the second support frame; The traction member is sequentially wound around the first guiding pulley, the plurality of second guiding pulleys and the moving trolley, and is fixed to the end of the second support component.

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 spacedly arranged at the first preset installation position, and the truss is erected on the first column; the first guiding pulley is arranged on the truss.

4. The replacement device according to claim 2, wherein The second support frame includes a first cross beam, a second cross beam and a plurality of second columns; The plurality of second columns are spacedly arranged at the second preset installation position, the first cross beam and the second cross beam are respectively erected on at least two of the second columns, and the first cross beam and the second cross beam are arranged in parallel; A connecting column is arranged between two adjacent second columns, and the plurality of second guiding pulleys are respectively arranged on the connecting column, the second column and the corresponding cross beam.

5. The replacement device according to claim 4, characterized in that, The moving trolley includes a vehicle frame and a lifting member; The vehicle frame is erected on the first cross beam and the second cross beam, the second driving component is arranged on the first cross beam and / or the second cross beam and is connected to the vehicle frame for driving the vehicle frame to perform linear reciprocating motion along the first cross beam and the second cross beam; The lifting member is arranged on the vehicle frame, and a third guiding pulley and a fourth guiding pulley are symmetrically arranged at positions near both ends of the lifting member; A movable pulley is arranged on the lifting tool, the traction member is sequentially wound around the first guiding pulley, the plurality of second guiding pulleys, the third guiding pulley, the movable pulley and the fourth guiding pulley, and is fixed to an intermediate beam connected between the first cross beam and the second cross beam.

6. The replacement device according to claim 5, wherein, Moving members are respectively arranged at positions near both ends of the vehicle frame, and cooperating members for moving in cooperation with the moving members are arranged on both the first cross beam and the second cross beam.

7. The replacement device according to claim 2, characterized in that, Further included is a supporting component, which is disposed at a position between the first guiding pulley and the adjacent second guiding pulley, and is used for supporting the traction member.

8. The replacement device according to any one of claims 1 to 7, characterized in that, Further included is a moving platform, which includes a platform main body, a traveling component and a traction component; The platform main body is connected to the traveling component, and the traveling component is movably disposed on the second supporting component; the traction component includes a traction wheel, a traction wheel bracket and a traction rope. The traction wheel bracket is disposed on the second supporting component, the traction wheel is rotatably disposed on the traction wheel bracket, the traction rope has a first free end and a second free end, the first free end is connected to the traveling component, and the second free end is wound around the traction wheel and connected to the second supporting component.

9. The replacement device according to claim 8, wherein, The traveling component includes a traveling wheel bracket and traveling wheels; The platform main body is connected to the traveling wheel bracket, the traveling wheels are spacedly disposed on the traveling wheel bracket, and the traveling wheels abut against the second supporting component.

10. The replacement device according to any one of claims 1 to 7, characterized in that, Further included is an auxiliary suspension component; A reinforcing support component is provided on the second supporting component, and the auxiliary suspension component is disposed on the reinforcing support component, and the auxiliary suspension component is used for transferring parts.

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