Replacement system

Abstract

Provided in the present application is a replacement system. The replacement system is used for replacing or repairing a device to be repaired of a wind turbine set, said device comprising an apparatus to be repaired assembled on a frame of the wind turbine set. The replacement system comprises: a hoisting device and a winching device, the hoisting device being detachably connected to the frame and comprising a hoisting component used for connecting to the apparatus to be repaired, and the hoisting component being connected to the winching device by means of a rope; a first support frame, the first support frame and the apparatus to be repaired being arranged on the same side of a tower, and the first support frame being used for placement of the apparatus to be repaired and / or an apparatus to be replaced; and a second support frame, the second support frame being arranged on the other side of the tower with respect to the first support frame, and the winching device being mounted on the second support frame. Compared with the prior art in which large specialized lifting apparatuses are used, multiple distributed components working in coordination with each other reduces hoisting difficulty and saves replacement costs.

Description

Replacement system

[0001] This application claims priority to Chinese patent application 2024223882246 with a filing date of 2024 / 9 / 27. This application incorporates the entirety of the aforementioned Chinese patent application. TECHNICAL FIELD

[0002] The present application relates to a replacement system. BACKGROUND

[0003] A wind turbine generator set includes a tower drum and a front frame fixed at the top of the tower drum and a rear frame connected with the front frame, the front frame is used for mounting a blade assembly, and the rear frame is usually provided with a generator, a reducer, a transformer and other devices for driving the rotation of the blades of the wind turbine.

[0004] When the device on the rear frame fails, it is usually necessary to transport the failed device out for maintenance. However, the failed device to be maintained is a very heavy device, and the rear frame is usually located at a height of hundreds of meters in the air. If the failed device is to be transported out, a large special hoisting device needs to be used to hoist and transport the generator and other failed devices out for maintenance.

[0005] The use of large professional hoisting equipment increases the difficulty and cost of hoisting. Each time the failed device needs to be maintained, a large-scale transportation of large special equipment and a large-scale hoisting need to be carried out. This is not conducive to the hoisting and maintenance of the failed device. SUMMARY

[0006] The technical problem to be solved by the present application is the defect that the prior art uses large professional hoisting equipment to hoist the failed device, which is difficult and costly. The present application provides a replacement system.

[0007] The present application solves the above technical problem by the following technical scheme:

[0008] A replacement system for replacing or maintaining a device to be maintained of a wind turbine generator set, the device to be maintained including a device to be maintained assembled on a frame of the wind turbine generator set, the frame being assembled at the top of a tower drum of the wind turbine generator set, and the device to be maintained being located at an outer side of the tower drum, characterized in that the replacement system comprises:

[0009] A hoisting device and a hoisting device, the hoisting device being detachably connected to the frame and being provided corresponding to the position of the device to be maintained, the hoisting device including a hoisting component for connecting with the device to be maintained, the hoisting component being connected with the hoisting device through a rope;

[0010] The first support frame is arranged on the same outer side of the tower drum as the equipment to be repaired, and is used for placing the equipment to be repaired and / or the equipment to be replaced.

[0011] The second support frame is arranged opposite to the first support frame and is located on the other outer side of the tower drum, and the hoisting device is installed on the second support frame.

[0012] In the technical solution, the replacement system includes the hoisting devices, the hoisting device, the first support frame and the second support frame which are arranged in a distributed manner, that is, the replacement system includes a plurality of components arranged in a distributed manner and working cooperatively, which reduces the hoisting difficulty and saves the replacement cost compared with the prior art which adopts a large professional hoisting device. Further, the first support frame and the second support frame are arranged on opposite outer sides of the tower drum, that is, the equipment to be repaired and the hoisting device are arranged on opposite outer sides of the tower drum, which avoids the risk that the part of the rope connected to the hoisting device scratches the equipment to be repaired and interferes with the hoisting track, and ensures the normal hoisting.

[0013] Preferably, the first support frame is detachably connected to the outer side wall of the bottom of the tower drum.

[0014] In the technical solution, the first support frame is detachably connected to the outer side wall of the bottom of the tower drum, so that the first support frame can be installed and fixed by means of the height of the bottom of the tower drum, without the need to additionally prepare an installation base, thereby achieving the beneficial technical effect of simplifying the structure of the entire replacement system.

[0015] Preferably, the replacement system further comprises a first installation assembly, the first installation assembly comprising a first installation piece and a second installation piece which cooperate with each other, the first installation piece being arranged on the first support frame, and the second installation piece being arranged on the outer side wall of the bottom of the tower drum.

[0016] In the technical solution, the first installation assembly is arranged, so that the first support frame can be conveniently detached and installed on the outer side wall of the bottom of the tower drum.

[0017] Preferably, the second support frame is detachably connected to the outer side wall of the bottom of the tower drum.

[0018] In the technical solution, the second support frame is detachably connected to the outer side wall of the bottom of the tower drum, so that the second support frame can be installed and fixed by means of the height of the bottom of the tower drum, without the need to additionally prepare an installation base, thereby achieving the beneficial technical effect of simplifying the structure of the entire replacement system.

[0019] Preferably, the replacement system further comprises a second mounting assembly, the second mounting assembly comprising a third mounting member and a fourth mounting member which are matched with each other, the third mounting member being arranged on the second support frame, and the fourth mounting member being arranged on the outer sidewall of the bottom of the tower.

[0020] In the technical solution, the second support frame can be conveniently dismounted and mounted on the outer sidewall of the bottom of the tower through the arrangement of the second mounting assembly.

[0021] Preferably, the rack comprises a front rack and a rear rack which are connected, the equipment to be maintained is mounted on the rear rack of the wind turbine generator, and the front rack is fixed to the top of the tower of the wind turbine generator.

[0022] The rear rack comprises two first rack bodies which are arranged along the length direction of the rack, and at least three second rack bodies which are arranged along the width direction of the rack, two ends of the at least three second rack bodies being respectively fixed to the two first rack bodies, and the equipment to be maintained being mounted in the space formed by two adjacent second rack bodies and two first rack bodies.

[0023] The hoisting device further comprises a hoisting rack, two ends of the hoisting rack being respectively detachably mounted on two second rack bodies adjacent to the equipment to be maintained, and the hoisting component being mounted on the hoisting rack.

[0024] In the technical solution, the hoisting component can be provided with a hoisting fulcrum by detachably mounting two ends of the hoisting rack of the hoisting device on two second rack bodies adjacent to the equipment to be maintained, so that the hoisting work of the equipment to be maintained can be completed.

[0025] Preferably, the hoisting device further comprises an auxiliary support, one end of the auxiliary support being connected with the hoisting rack, and the other end of the auxiliary support being detachably connected with the second rack body which is not connected with the hoisting rack.

[0026] In the technical solution, the mounting of the hoisting device is more firm by arranging the auxiliary support.

[0027] Preferably, the rack comprises a front rack and a rear rack which are connected, the equipment to be maintained is mounted on the rear rack of the wind turbine generator, and the front rack is fixed to the top of the tower of the wind turbine generator.

[0028] The replacement system further comprises a first diverting pulley assembly, the first diverting pulley assembly being detachably connected to the front rack and located on the same outer side of the tower as the second support frame.

[0029] The first turning pulley assembly comprises a first support, a first pulley arranged in a vertical direction and a second pulley arranged in a horizontal direction, the first support is detachably connected to the front rack, the second pulley is arranged close to the equipment to be maintained, the first pulley is arranged away from the equipment to be maintained, and the rope is sequentially arranged on the hoisting device, the first pulley and the second pulley.

[0030] In the technical solution, the first turning pulley assembly is arranged to adjust the direction of the rope, so that the hoisting device arranged on one side of the tower drum can hoist the equipment to be maintained arranged on the other side of the tower drum.

[0031] Preferably, the replacement system further comprises a second turning pulley assembly, the second turning pulley assembly is detachably connected to the rear rack, and is adjacent to one side of the hoisting device along the length direction of the rack.

[0032] The second turning pulley assembly comprises a second support, a third pulley and a fourth pulley arranged in the horizontal direction and mounted on the second support, the second support is detachably connected to the rear rack, the third pulley is arranged corresponding to the second pulley, the fourth pulley is arranged corresponding to the equipment to be maintained, and the rope is sequentially arranged on the hoisting device, the first pulley, the second pulley, the third pulley, the fourth pulley and the hoisting component.

[0033] In the technical solution, the second turning pulley assembly is arranged to adjust the direction of the rope, so that the hoisting device arranged on one side of the tower drum can hoist the equipment to be maintained arranged on the other side of the tower drum, and the rope is adjusted from the side of the tower drum to the position corresponding to the hoisting component, so that the equipment to be maintained can be hoisted from the front direction, and the loss of force is avoided.

[0034] Preferably, the hoisting device comprises a winch or a hoisting machine; and / or,

[0035] The equipment to be replaced comprises a transformer; and / or,

[0036] The equipment to be maintained comprises a transformer.

[0037] In the technical solution, the hoisting device is arranged as a winch or a hoisting machine, and a specific way of arranging the hoisting device is provided.

[0038] The positive progress effect of the present application is that:

[0039] The application sets the replacement system including the hoisting device, the hoist device, the first support frame and the second support frame which are dispersedly arranged, that is, the replacement system includes multiple dispersedly arranged components which work cooperatively, and the hoisting difficulty is reduced and the replacement cost is saved compared with the large professional hoisting equipment in the prior art. Further, the first support frame and the second support frame are arranged at the opposite two outer sides of the tower, that is, the device to be repaired and the hoist device are arranged at the opposite two outer sides of the tower, the risk that the rope and the hoist device connection part scratch the device to be repaired and interfere with the hoisting track is avoided, and the normal hoisting is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0040] Fig. 1 is a perspective structural schematic view of the replacement system of a preferred embodiment of the application installed on a wind turbine generator set.

[0041] Fig. 2 is a perspective structural schematic view of the replacement system of a preferred embodiment of the application installed on a wind turbine generator set from another angle.

[0042] Fig. 3 is a partial enlarged structural schematic view of part A in Fig. 2.

[0043] Fig. 4 is a partial enlarged structural schematic view of part B in Fig. 2.

[0044] Fig. 5 is a partial enlarged structural schematic view of part C in Fig. 2.

[0045] Fig. 6 is a side view structural schematic view of step one of the replacement system of a preferred embodiment of the application replacing the device to be repaired of the wind turbine generator set.

[0046] Fig. 7 is a side view structural schematic view of step two of the replacement system of a preferred embodiment of the application replacing the device to be repaired of the wind turbine generator set.

[0047] Reference signs: replacement system 1 hoisting device 10 hoisting component 11 hoisting bracket 12 auxiliary support 13 hoist device 20 rope 30 first support frame 40 second support frame 50 first diverting pulley assembly 60 first support 61 first pulley 62 second pulley 63 second diverting pulley assembly 70 second support 71 third pulley 72 fourth pulley 73 device to be repaired 2 rack 3 rear rack 31 first rack body 311 second rack body 312 front rack 32 tower 5 DETAILED DESCRIPTION

[0048] The embodiments of the present application are described below in detail, examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application, all other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0049] In the description of the present application, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0050] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0051] As shown in FIGS. 1-5, the present embodiment provides a replacement system 1 for replacing or repairing a device to be repaired of a wind turbine generator set. The device to be repaired includes a device to be repaired 2 mounted on a rack 3 of the wind turbine generator set, the rack 3 is assembled at the top of a tower 5 of the wind turbine generator set, and the device to be repaired 2 is located on an outer side of the tower 5. The replacement system 1 includes a hoisting device 10, a hoisting device 20, a first support frame 40 and a second support frame 50.

[0052] The hoisting device 10 is detachably connected to the rack 3, and is arranged corresponding to the position of the device to be repaired 2, the hoisting device 10 includes a hoisting part 11 for connecting with the device to be repaired 2, the hoisting part 11 is connected with the hoisting device 20 through a rope 30.

[0053] The first support frame 40 is arranged on the same outer side of the tower drum 5 as the device to be repaired 2, and is used to place the device to be repaired 2. However, the first support frame 40 can also be used to place a device to be replaced (i.e. a device replacing the device to be repaired 2), or the first support frame 40 can be used to place both the device to be repaired 2 and the device to be replaced. The first support frame 40 can be arranged at the bottom of the tower drum 5 to facilitate hoisting of the device to be repaired 2 and / or the device to be replaced. However, the first support frame 40 can also be arranged at a middle position of the tower drum 5 or other positions.

[0054] The second support frame 50 is arranged on the other outer side of the tower drum 5 opposite the first support frame 40, and the hoisting device 20 is arranged on the second support frame 50. The second support frame 50 can be arranged at the bottom of the tower drum 5 to facilitate operation of the hoisting device 20. However, the second support frame 50 can also be arranged at a middle position of the tower drum 5 or other positions.

[0055] In this way, by arranging the replacement system 1 to include the hoisting device 10, the hoisting device 20, the first support frame 40 and the second support frame 50 arranged in a distributed manner, i.e. the replacement system 1 includes multiple components arranged in a distributed manner and working together, the hoisting difficulty is reduced and the replacement cost is saved compared with the prior art which uses large professional hoisting equipment. Furthermore, by arranging the first support frame 40 and the second support frame 50 on opposite outer sides of the tower drum 5, i.e. arranging the device to be repaired 2 and the hoisting device 20 on opposite outer sides of the tower drum 5, the risk of the rope 30 connected to the hoisting device 20 scratching the device to be repaired 2 and interfering with the hoisting trajectory is avoided, and normal hoisting is ensured.

[0056] It should be noted that in the present embodiment, the device to be repaired 2 includes a transformer, but the device to be repaired 2 can also include other devices such as a generator, a speed reducer or other working devices arranged on the rack 3. Similarly, the device to be replaced can also include a transformer, but the device to be replaced can also include other devices such as a generator, a speed reducer or other working devices arranged on the rack 3.

[0057] Furthermore, the first support frame 40 is detachably connected to the outer side wall of the bottom of the tower drum 5. In this way, by detachably connecting the first support frame 40 to the outer side wall of the bottom of the tower drum 5, the first support frame 40 can be installed and fixed by means of the height of the bottom of the tower drum 5, without the need to additionally prepare an installation base, thereby achieving the beneficial technical effect of simplifying the structure of the entire replacement system 1. However, in other embodiments, the first support frame 40 can also be arranged on the outer side of the bottom of the tower drum 5 through an installation base or directly.

[0058] Specifically, the replacement system 1 further comprises a first mounting assembly, the first mounting assembly comprises a first mounting member and a second mounting member which are matched with each other, the first mounting member is arranged on the first support frame 40, and the second mounting member is arranged on the outer side wall of the bottom of the tower 5. In this way, by arranging the first mounting assembly, the first support frame 40 can be conveniently disassembled and mounted on the outer side wall of the bottom of the tower 5. The first mounting member is a mounting joint, and the second mounting member is a mounting interface correspondingly; or the first mounting member is a mounting interface, and the second mounting member is a mounting joint correspondingly.

[0059] The second support frame 50 is detachably connected to the outer side wall of the bottom of the tower 5. In this way, by detachably connecting the second support frame 50 to the outer side wall of the bottom of the tower 5, the second support frame 50 can be mounted and fixed by means of the height of the bottom of the tower 5, without the need to additionally prepare a mounting base, so as to achieve the beneficial technical effect of simplifying the structure of the entire replacement system 1. However, it is not limited to this, and in other embodiments, the second support frame 50 can also be arranged on the outer side of the bottom of the tower 5 through a mounting base or directly.

[0060] Specifically, the replacement system 1 further comprises a second mounting assembly, the second mounting assembly comprises a third mounting member and a fourth mounting member which are matched with each other, the third mounting member is arranged on the second support frame 50, and the fourth mounting member is arranged on the outer side wall of the bottom of the tower 5. In this way, by arranging the second mounting assembly, the second support frame 50 can be conveniently disassembled and mounted on the outer side wall of the bottom of the tower 5. The third mounting member is a mounting joint, and the fourth mounting member is a mounting interface correspondingly; or the third mounting member is a mounting interface, and the fourth mounting member is a mounting joint correspondingly.

[0061] It should be noted that in the prior art, since the large special equipment and the wind turbine components are all placed on the tower bottom foundation, the load bearing requirement of the tower bottom foundation is relatively high. In the present embodiment, since only the first support frame 40 and the second support frame 50 are mounted on the outer side wall of the bottom of the tower 5, the load bearing requirement of the tower bottom foundation is not high, thereby greatly reducing the manufacturing cost of the tower bottom.

[0062] In the present embodiment, the rack 3 comprises a front rack 32 and a rear rack 31 which are connected, the equipment to be repaired 2 is mounted on the rear rack 31 of the wind turbine generator, and the front rack 32 is fixed to the top of the tower 5 of the wind turbine generator.

[0063] The rear rack 31 comprises two first rack bodies 311 arranged along the length direction L of the rack 3, and at least three second rack bodies 312 arranged along the width direction W of the rack 3, two ends of the at least three second rack bodies 312 are fixed to the two first rack bodies 311 respectively, and the equipment to be repaired 2 is mounted in the space enclosed by two adjacent second rack bodies 312 and two first rack bodies 311.

[0064] The hoisting device 10 further comprises a hoisting frame 12, two ends of the hoisting frame 12 are detachably mounted on two second frame bodies 312 adjacent to the equipment 2 to be repaired respectively, and the hoisting component 11 is mounted on the hoisting frame 12. In this way, by detachably mounting the two ends of the hoisting frame 12 of the hoisting device 10 on the two second frame bodies 312 adjacent to the equipment 2 to be repaired respectively, a hoisting fulcrum can be provided for the hoisting component 11, so as to complete the hoisting work of the equipment 2 to be repaired.

[0065] Preferably, the hoisting device 10 further comprises an auxiliary support 13, one end of the auxiliary support 13 is connected with the hoisting frame 12, and the other end is detachably connected with the second frame body 312 which is not connected with the hoisting frame 12. In this way, by providing the auxiliary support 13, the installation of the hoisting device 10 is more stable.

[0066] In the embodiment, the replacement system 1 further comprises a first diverting pulley assembly 60, the first diverting pulley assembly 60 is detachably connected with the front frame 32 and is located on the same outer side of the tower drum 5 as the second support frame 50. The first diverting pulley assembly 60 comprises a first support 61, a first pulley 62 arranged in the vertical direction H and a second pulley 63 arranged in the horizontal direction which are mounted on the first support 61, the first support 61 is detachably connected with the front frame 32, the second pulley 63 is arranged close to the equipment 2 to be repaired, and the first pulley 62 is arranged away from the equipment 2 to be repaired, and the rope 30 is sequentially arranged on the hoisting device 20, the first pulley 62 and the second pulley 63. In this way, by providing the first diverting pulley assembly 60, the direction of the rope 30 is adjusted, so as to realize the hoisting of the equipment 2 to be repaired arranged on the other outer side of the tower drum 5 by the hoisting device 20 arranged on one outer side of the tower drum 5. It should be noted that in the embodiment of the present application, after the replacement system 1 is installed, the vertical direction H is parallel to the axial direction of the tower drum 5, and the horizontal direction is perpendicular to the axial direction of the tower drum 5.

[0067] The replacement system 1 further comprises a second diverting pulley assembly 70 which is detachably connected to the rear frame 31 and is adjacent to an outer side of the hoisting device 10 along the length direction L of the frame 3. The second diverting pulley assembly 70 comprises a second support 71 which is detachably connected to the rear frame 31, and a third pulley 72 and a fourth pulley 73 which are arranged in a horizontal direction and are mounted on the second support 71, the third pulley 72 is arranged corresponding to the second pulley 63, and the fourth pulley 73 is arranged corresponding to the equipment to be repaired 2, and the rope 30 is sequentially arranged through the hoisting device 20, the first pulley 62, the second pulley 63, the third pulley 72, the fourth pulley 73 and the hoisting component 11. In this way, by arranging the second diverting pulley assembly 70, the direction of the rope 30 is adjusted, so as to realize the hoisting of the equipment to be repaired 2 arranged on the other outer side of the tower 5 by the hoisting device 20 arranged on the outer side of the tower 5, and the adjustment of the rope 30 from the outer side of the tower 5 to the position corresponding to the hoisting component 11, so as to be able to hoist the equipment to be repaired 2 from the front direction, and avoid the loss of force.

[0068] Specifically, the hoisting device 20 comprises a winch or a hoisting machine. However, it is not limited thereto, and in other embodiments, the hoisting device 20 can also be other devices which can provide a pulling force.

[0069] The working process of the replacement system 1 of the embodiment is as follows:

[0070] Step one: as shown in FIG. 6, the hoisting device 10, the hoisting device 20, the first support frame 40 and the second support frame 50 are respectively installed at the corresponding positions of the wind turbine generator, i.e., the hoisting device 10 is detachably connected to the frame 3; the first support frame 40 and the second support frame 50 are detachably connected to the bottom of the tower 5, and the first support frame 40 and the equipment to be repaired 2 are arranged on the same outer side of the tower 5, and the second support frame 50 is arranged on the other outer side of the tower 5 opposite to the first support frame 40; the hoisting device 20 is installed on the second support frame 50; one end of the hoisting component 11 of the hoisting device 10 is connected to the equipment to be repaired 2, and the other end is connected to the hoisting device 20 through the rope 30;

[0071] Step two: as shown in FIG. 7, the hoisting device 20 pulls the rope 30 to drive the hoisting component 11 to hoist the equipment to be repaired 2 to the first support frame 40, and in this process, since the first support frame 40 and the second support frame 50 are arranged on the opposite outer sides of the tower 5, i.e., the equipment to be repaired 2 and the hoisting device 20 are arranged on the opposite outer sides of the tower 5, the risk of the part of the rope 30 connected to the hoisting device 20 scratching the equipment to be repaired 2 and interfering with the hoisting track is avoided, and the normal hoisting is ensured;

[0072] Step three: the repaired equipment is placed on the first support frame 40, and the hoisting component 11 is driven by the rope 30 to hoist the repaired equipment to the installation position for installation; similarly, in this process, since the first support frame 40 and the second support frame 50 are respectively arranged on the opposite outer sides of the tower drum 5, that is, the repaired equipment and the hoisting device 20 are respectively arranged on the opposite outer sides of the tower drum 5, the risk of scratches on the repaired equipment and interference with the hoisting trajectory caused by the part of the rope 30 connected with the hoisting device 20 is avoided, and the normal hoisting is ensured.

[0073] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and these changes and modifications all fall within the protection scope of the present application.

Claims

1. A replacement system for replacing or servicing a device to be serviced of a wind power unit, said device to be serviced comprising a piece of equipment to be serviced mounted on a frame of a wind power unit, said frame being mounted on a top of a tower of said wind power unit and said piece of equipment to be serviced being located on an outer side of said tower, characterized in that, The replacement system comprises: a hoisting device and a hoisting device, the hoisting device is detachably connected to the rack, and is arranged corresponding to the position of the equipment to be repaired, the hoisting device comprises a hoisting part for connecting with the equipment to be repaired, and the hoisting part is connected with the hoisting device through a rope; A first support frame is arranged on the same outer side of the tower drum as the equipment to be repaired, and the first support frame is used for placing the equipment to be repaired and / or the equipment to be replaced. A second support frame is arranged opposite to the first support frame and located on the other outer side of the tower drum, and the hoisting device is installed on the second support frame.

2. The exchange system of claim 1, wherein, The first support frame is detachably connected to the outer side wall of the bottom of the tower drum.

3. The exchange system of claim 2, wherein, The replacement system further comprises a first mounting assembly, the first mounting assembly comprises a first mounting member and a second mounting member matched with each other, the first mounting member is arranged on the first support frame, and the second mounting member is arranged on the outer side wall of the bottom of the tower drum.

4. The exchange system according to any of claims 1-3, characterized in that, The second support frame is detachably connected to the outer side wall of the bottom of the tower drum.

5. The exchange system of claim 4, wherein, The replacement system further comprises a second mounting assembly, the second mounting assembly comprises a third mounting member and a fourth mounting member matched with each other, the third mounting member is arranged on the second support frame, and the fourth mounting member is arranged on the outer side wall of the bottom of the tower drum.

6. The exchange system according to any of claims 1-5, characterized in that, The rack comprises a front rack and a rear rack connected with each other, the equipment to be repaired is installed on the rear rack of the wind turbine generator, and the front rack is fixed to the top of the tower drum of the wind turbine generator; The rear rack comprises two first frame bodies arranged along the length direction of the rack, and at least three second frame bodies arranged along the width direction of the rack, two ends of the at least three second frame bodies are respectively fixed to the two first frame bodies, and the equipment to be repaired is installed in the space formed by two adjacent second frame bodies and two first frame bodies; The hoisting device further comprises a lifting frame, two ends of the lifting frame are respectively detachably installed on two second frame bodies adjacent to the equipment to be repaired, and the hoisting part is installed on the lifting frame.

7. The exchange system of claim 6, wherein, The hoisting device further comprises an auxiliary support, one end of the auxiliary support is connected with the lifting frame, and the other end is detachably connected with the second frame body which is not connected with the lifting frame.

8. The exchange system according to any of claims 1-7, characterized in that, The rack comprises a front rack and a rear rack connected with each other, the equipment to be repaired is installed on the rear rack of the wind turbine generator, and the front rack is fixed to the top of the tower drum of the wind turbine generator; The replacement system further comprises a first turning pulley assembly, the first turning pulley assembly is detachably connected to the front rack and located on the same outer side of the tower drum as the second support frame. The first turning pulley assembly comprises a first support, a first pulley arranged in a vertical direction and a second pulley arranged in a horizontal direction, the first support is detachably connected to the front frame, the second pulley is arranged close to the equipment to be maintained, the first pulley is arranged away from the equipment to be maintained, and the rope is sequentially arranged on the winch, the first pulley and the second pulley.

9. The exchange system of claim 8, wherein, The replacement system further comprises a second turning pulley assembly, the second turning pulley assembly is detachably connected to the rear frame and is adjacent to an outer side of the hoisting device along the length direction of the frame; The second turning pulley assembly comprises a second support, a third pulley arranged in the horizontal direction and a fourth pulley arranged in the horizontal direction, the second support is detachably connected to the rear frame, the third pulley is arranged corresponding to the second pulley, the fourth pulley is arranged corresponding to the equipment to be maintained, and the rope is sequentially arranged on the winch, the first pulley, the second pulley, the third pulley, the fourth pulley and the hoisting component.

10. The exchange system according to any of claims 1-9, characterized in that, The winch comprises a winch or a hoist; and / or, The equipment to be replaced comprises a transformer; and / or, The equipment to be maintained comprises a transformer.

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