Replacement device

Abstract

The utility model provides replacement equipment. The replacement equipment comprises two frame bodies arranged side by side, each frame body comprises a stand column, a first cantilever beam and a second cantilever beam, the stand columns are arranged in the height direction and detachably connected to the top of a supporting structure used for installing to-be-maintained equipment, and the first cantilever beams and the second cantilever beams are arranged in the length direction and detachably connected to the top of the supporting structure; the two sides of the stand column are connected in the length direction; the transverse rail is arranged in the width direction, and the two ends of the transverse rail are connected with the two first cantilever beams respectively; the first pulley assembly is arranged on the transverse rail in a sliding mode and used for being connected with equipment to be maintained; one end of the second pulley assembly is slidably arranged on the first cantilever beam along the height direction, and the other end is fixedly connected with the cross rail; and a counter weight matched with the weight of to-be-maintained equipment can be hung on the second cantilever beam. And by arranging the frame body structure of the replacement equipment, the hoisting difficulty is reduced, and the replacement cost is saved.

Description

Technical Field

[0001] The utility model relates to a replacement device. Background Art

[0002] A wind turbine generator set generally includes a generator, a speed reducer, a transformer, a cooler and other equipment that works in cooperation with a blade assembly.

[0003] When these supporting devices fail, it is usually necessary to transport the faulty device out for repair. However, the faulty devices to be repaired are all very heavy devices and these faulty devices are usually located at high altitudes. If you want to transport the faulty device out, you need to use a large special lifting device to lift the faulty device out for repair.

[0004] Using a large professional lifting device not only has a high lifting difficulty, but also has a high implementation cost. Every time a faulty device needs to be maintained, a large-scale handling of special equipment and lifting work needs to be carried out. This is not conducive to the lifting and maintenance of faulty devices. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the defects of large lifting difficulty and high cost of using a large professional lifting device to lift a faulty device in the prior art, and to provide a replacement device.

[0006] The utility model solves the above technical problem through the following technical solutions:

[0007] A replacement device for replacing a device to be repaired of a wind turbine generator set, characterized in that the replacement device includes:

[0008] Two frames arranged side by side, each frame includes a column, a first cantilever beam and a second cantilever beam. The column is arranged along the height direction and is detachably connected to the top of a support structure for installing the device to be repaired. The first cantilever beam and the second cantilever beam are both arranged along the length direction and are respectively connected to both sides of the column along the length direction;

[0009] A cross rail, which is arranged along the width direction, and both ends of the cross rail are respectively connected to the first cantilever beams of the two frames;

[0010] A first pulley assembly, which is slidably arranged on the cross rail, and the first pulley assembly is used to connect with the device to be repaired;

[0011] A second pulley assembly, one end of which is slidably arranged on the first cantilever beam along the height direction, and the other end is fixedly connected to the cross rail;

[0012] Wherein, a counterweight matching the weight of the equipment to be repaired can be suspended on the second cantilever beam.

[0013] In this technical solution, by providing a frame structure of the replacement equipment detachably connected to the top of the support structure for installing the equipment to be repaired, compared with the prior art that uses large professional lifting equipment, the lifting difficulty is reduced and the replacement cost is saved.

[0014] Preferably, both the first cantilever beam and the second cantilever beam have a spacing from the top end of the column;

[0015] The frame further includes a first tie rod, and two ends of the first tie rod are respectively connected to the top end of the column and the end of the first cantilever beam away from the column; and / or,

[0016] The frame further includes a second tie rod, and two ends of the second tie rod are respectively connected to the top end of the column and the end of the second cantilever beam away from the column.

[0017] In this technical solution, by providing the first tie rod, a pulling force can be applied to the end of the first cantilever beam away from the column, so that the first cantilever beam can also maintain structural stability after bearing weight. By providing the second tie rod, a pulling force can be applied to the end of the second cantilever beam away from the column, so that the second cantilever beam can also maintain structural stability after bearing weight.

[0018] Preferably, the frame further includes a first connection assembly connecting the first tie rod and the first cantilever beam. The first connection assembly includes first connecting plates respectively clamped on both sides of the first cantilever beam along the width direction, and the first tie rod is connected to one end of the first connecting plate along the height direction through a first fixing assembly; and / or,

[0019] The frame further includes a second connection assembly connecting the second tie rod and the second cantilever beam. The second connection assembly includes second connecting plates respectively clamped on both sides of the second cantilever beam along the width direction, and the second tie rod is connected to one end of the second connecting plate along the height direction through a second fixing assembly.

[0020] Preferably, the frame further includes a third connection assembly connecting the first tie rod and the second tie rod;

[0021] The third connection assembly includes third connecting plates respectively located on both sides of the column along the width direction. The third connecting plates are fixedly connected to the column, and the first tie rod and the second tie rod are respectively connected to both ends of the third connecting plate along the length direction through third fixing assemblies.

[0022] Preferably, the frame further includes a fourth connection component that connects the first cantilever beam and the second cantilever beam;

[0023] The fourth connection component includes fourth connection plates respectively located on both sides of the column along the width direction. The fourth connection plates are fixedly connected to the column, and the first cantilever beam and the second cantilever beam are respectively connected to both ends of the fourth connection plates along the length direction through fourth fixing components.

[0024] Preferably, the frame further includes legs that are arranged in the same direction as the column. The top end of the legs is connected to the column, and the bottom end of the legs is spaced from the bottom end of the column.

[0025] In this technical solution, by providing the legs, the column can be supported assistantly.

[0026] Preferably, the replacement device further includes a first lateral support member, and both ends of the first lateral support member are respectively connected to the first cantilever beams of the two frames.

[0027] In this technical solution, by providing the first lateral support member, the overall structure of the replacement device can be made more stable.

[0028] Preferably, the replacement device further includes a second lateral support member, and both ends of the second lateral support member are respectively connected to the first cantilever beam of one of the frames and the second cantilever beam of the other frame.

[0029] In this technical solution, by providing the second lateral support member, the overall structure of the replacement device can be made more stable.

[0030] Preferably, a lateral sliding groove is provided on the cross rail, and the first pulley set of the first pulley block assembly is slidably arranged in the lateral sliding groove;

[0031] First blocking members are respectively arranged at both ends of the lateral sliding groove along the width direction, and the first blocking members are used to block the first pulley set from separating from the lateral sliding groove.

[0032] In this technical solution, the lateral sliding groove is provided to accommodate the first pulley set and can define the movement track of the first pulley set. By providing the first blocking members, the first pulley set can be blocked from separating from the lateral sliding groove.

[0033] Preferably, a longitudinal sliding groove is provided on each first cantilever beam, and the second pulley sets of the two second pulley block assemblies are respectively slidably arranged in the longitudinal sliding grooves on the two first cantilever beams;

[0034] One end of each of the longitudinal chutes away from the column is provided with a second blocking member, and the second blocking member is used to block the second pulley set from disengaging from the longitudinal chute.

[0035] In this technical solution, the longitudinal chute is provided to accommodate the second pulley set and can define the movement track of the second pulley set. By providing the second blocking member, the second pulley set is blocked from disengaging from the longitudinal chute.

[0036] The positive and progressive effects of the present utility model are as follows:

[0037] By providing the frame structure of the replacement device, the present utility model reduces the hoisting difficulty and saves the replacement cost. Description of the Drawings

[0038] Figure 1 It is a front view structural schematic diagram of the replacement device of a preferred embodiment of the present utility model.

[0039] Figure 2 It is Figure 1 A partial enlarged structural schematic diagram of part A in

[0040] Figure 3 It is Figure 1 A partial enlarged structural schematic diagram of part B in

[0041] Figure 4 It is Figure 1 A partial enlarged structural schematic diagram of part C in

[0042] Figure 5 It is Figure 1 A partial enlarged structural schematic diagram of part D in

[0043] Figure 6 It is Figure 1 A partial enlarged structural schematic diagram of part E in

[0044] Figure 7 It is a right view structural schematic diagram of the replacement device of a preferred embodiment of the present utility model.

[0045] Figure 8 It is Figure 7 A partial enlarged structural schematic diagram of part F in

[0046] Figure 9 It is a top view structural schematic diagram of the replacement device of a preferred embodiment of the present utility model.

[0047] Description of the Reference Numerals

[0048] Replacement device 1

[0049] Frame 10

[0050] Column 11

[0051] The first cantilever beam 12

[0052] The longitudinal chute 121

[0053] The second cantilever beam 13

[0054] The first pull rod 141

[0055] The second pull rod 142

[0056] The first connection component 15

[0057] The first connection plate 151

[0058] The first fixing component 152

[0059] The second connection component 16

[0060] The second connection plate 161

[0061] The second fixing component 162

[0062] The third connection component 17

[0063] The third connection plate 171

[0064] The third fixing component 172

[0065] The fourth connection component 18

[0066] The fourth connection plate 181

[0067] The fourth fixing component 182

[0068] The support leg 19

[0069] The cross rail 20

[0070] The transverse chute 21

[0071] The first blocking member 22

[0072] The first pulley assembly 30

[0073] The first pulley group 31

[0074] The second pulley assembly 40

[0075] The second pulley group 41

[0076] The first lateral support member 50

[0077] The second lateral support member 60

[0078] The height direction H

[0079] The length direction L

[0080] The width direction W Detailed implementation manners

[0081] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0082] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by 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", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0083] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0084] As Figures 1 to 9 shown, this embodiment provides a replacement device 1 for replacing a device to be repaired of a wind turbine generator. The replacement device 1 is detachably connected to the top of a support structure for installing the device to be repaired, and the replacement device 1 includes: two frame bodies 10, a cross rail 20, a first trolley assembly 30, and a second trolley assembly 40.

[0085] Two frame bodies 10 are arranged side by side. Each frame body 10 includes a column 11, a first cantilever beam 12 and a second cantilever beam 13. The column 11 is arranged along the height direction H and is detachably connected to the top of a support structure for installing the equipment to be repaired. The first cantilever beam 12 and the second cantilever beam 13 are both arranged along the length direction L and are respectively connected to both sides of the column 11 along the length direction L. A cross rail 20 is arranged along the width direction W, and both ends of the cross rail 20 are respectively connected to the first cantilever beams 12 of the two frame bodies 10. A first pulley assembly 30 is slidably arranged on the cross rail 20, and the first pulley assembly 30 is used for connecting with the equipment to be repaired. One end of a second pulley assembly 40 is slidably arranged on the first cantilever beam 12 along the height direction H, and the other end is fixedly connected to the cross rail 20. Wherein, a counterweight matching the weight of the equipment to be repaired can be hung on the second cantilever beam 13.

[0086] In this way, by setting the frame structure of the replacement equipment 1, compared with the large professional lifting equipment in the prior art, the lifting difficulty is reduced and the replacement cost is saved.

[0087] It should be noted that in this embodiment, the equipment to be repaired is a cooler, or it can also be a detachable local component on the cooler, such as a radiator fin; the cooler is installed on a cooling tower, that is, the cooling tower is the corresponding support structure. However, it is not limited thereto, and it can also be other equipment, such as a generator, a speed reducer, etc., which are working equipment installed on their corresponding support structures. In this embodiment, the height direction H is the height direction of the frame body 10 and is the same as the height direction of the support structure for installing the equipment to be repaired; the length direction L and the width direction W are perpendicular to each other, and the length direction L is the same as the axial direction of the first cantilever beam 12 and / or the second cantilever beam 13.

[0088] In this embodiment, the number of the second pulley assemblies 40 is two. One ends of the two second pulley assemblies 40 are respectively slidably arranged on the first cantilever beams 12 of the two frame bodies 10, and the other ends of the two second pulley assemblies 40 are respectively fixedly connected to the cross rail 20.

[0089] Both the first cantilever beam 12 and the second cantilever beam 13 have a spacing from the top end of the column 11. The frame 10 further includes a first tie rod 141 and a second tie rod 142. The two ends of the first tie rod 141 are respectively connected to the top end of the column 11 and the end of the first cantilever beam 12 away from the column 11. The two ends of the second tie rod 142 are respectively connected to the top end of the column 11 and the end of the second cantilever beam 13 away from the column 11. In this way, by providing the first tie rod 141, a tensile force can be applied to the end of the first cantilever beam 12 away from the column 11, so that the first cantilever beam 12 can also maintain structural stability after bearing the load; similarly, by providing the second tie rod 142, a tensile force can be applied to the end of the second cantilever beam 13 away from the column 11, so that the second cantilever beam 13 can also maintain structural stability after bearing the load. However, it is not limited to this. In other embodiments, according to the design requirements, only the first tie rod 141 or only the second tie rod 142 can be provided.

[0090] In this embodiment, the frame 10 further includes a first connection assembly 15. The first connection assembly 15 connects the first tie rod 141 and the first cantilever beam 12. The first connection assembly 15 includes first connection plates 151 respectively clamped on both sides of the first cantilever beam 12 along the width direction W. The first tie rod 141 is connected to one end of the first connection plate 151 along the height direction H through a first fixing assembly 152. Specifically, the first fixing assembly 152 includes a bolt and a nut cooperating with it. The bolt sequentially passes through one of the first connection plates 151, the first tie rod 141 and the other first connection plate 151, and the corresponding nut fastens the bolt to the first connection plate 151, thereby realizing the connection between the first tie rod 141 and the first cantilever beam 12. At the end of the first connection plate 151 away from the first tie rod 141, the bolt sequentially passes through the two first connection plates 151, and the corresponding nut fastens the bolt to the first connection plate 151, thereby further clamping the two first connection plates 151 on both sides of the first cantilever beam 12.

[0091] The frame body 10 further includes a second connection component 16. The second connection component 16 connects the second pull rod 142 and the second cantilever beam 13. The second connection component 16 includes second connection plates 161 respectively clamped on both sides of the second cantilever beam 13 along the width direction W. The second pull rod 142 is connected to one end of the second connection plate 161 along the height direction H through a second fixing component 162. Specifically, the second fixing component 162 includes a bolt and a nut cooperating therewith. The bolt sequentially passes through one of the second connection plates 161, the second pull rod 142, and the other second connection plate 161, and the corresponding nut fastens the bolt to the second connection plate 161, thereby realizing the connection between the second pull rod 142 and the second cantilever beam 13. At the end of the second connection plate 161 far from the second pull rod 142, the bolt sequentially passes through the two second connection plates 161, and the corresponding nut fastens the bolt to the second connection plate 161, thereby further clamping the two second connection plates 161 on both sides of the second cantilever beam 13.

[0092] The frame body 10 further includes a third connection component 17. The third connection component 17 connects the first pull rod 141 and the second pull rod 142. The third connection component 17 includes third connection plates 171 respectively located on both sides of the column 11 along the width direction W. The third connection plates 171 are fixedly connected to the column 11. Specifically, the third connection plates 171 and the column 11 are fixedly connected together by welding.

[0093] The first pull rod 141 and the second pull rod 142 are respectively connected to both ends of the third connection plate 171 along the length direction L through a third fixing component 172. Specifically, the third fixing component 172 includes a bolt and a nut cooperating therewith. One of the bolts sequentially passes through one of the third connection plates 171, the first pull rod 141, and the other third connection plate 171, and the corresponding nut fastens the bolt to the third connection plate 171; similarly, the other bolt sequentially passes through one of the third connection plates 171, the second pull rod 142, and the other third connection plate 171, and the corresponding nut fastens the bolt to the third connection plate 171, thereby realizing the connection between the first pull rod 141 and the second pull rod 142 while clamping the column 11 by the two third connection plates 171. In order to further strengthen the connection strength between the first pull rod 141 and the second pull rod 142, the shapes of the two third connection plates 171 are both triangular structures with the same size. Two top corner positions of each third connection plate 171 are respectively connected to the first pull rod 141 and the second pull rod 142. The position of the third corner of each third connection plate 171 is set upward, and the two third connection plates 171 are fixedly connected by bolts and nuts.

[0094] The frame 10 further includes a fourth connection component 18, and the fourth connection component 18 connects the first cantilever beam 12 and the second cantilever beam 13. The fourth connection component 18 includes fourth connection plates 181 respectively located on both sides of the column 11 along the width direction W, and the fourth connection plates 181 are fixedly connected to the column 11. Specifically, the fourth connection plates 181 are fixedly connected to the column 11 by welding.

[0095] The first cantilever beam 12 and the second cantilever beam 13 are respectively connected to both ends of the fourth connection plate 181 along the length direction L through fourth fixing components 182. Specifically, the fourth fixing components 182 include bolts and nuts matching therewith. One bolt sequentially passes through one of the fourth connection plates 181, the first cantilever beam 12 and another third connection plate 171, and the corresponding nut fastens the bolt to the fourth connection plate 181; similarly, the other bolt sequentially passes through one of the fourth connection plates 181, the second cantilever beam 13 and another fourth connection plate 181, and the corresponding nut fastens the bolt to the fourth connection plate 181, so that while the two fourth connection plates 181 clamp the column 11, the first cantilever beam 12 and the second cantilever beam 13 are connected.

[0096] In this embodiment, the frame 10 further includes a support leg 19. The support leg 19 is arranged in the same direction as the column 11, and the top end of the support leg 19 is connected to the column 11, and the bottom end of the support leg 19 is spaced from the bottom end of the column 11. In this way, by providing the support leg 19, the column 11 can be supported assistantly.

[0097] The replacement device 1 further includes a first lateral support member 50, and both ends of the first lateral support member 50 are respectively connected to the first cantilever beams 12 of two frames 10. In this way, by providing the first lateral support member 50, the overall structure of the replacement device 1 can be made more stable. Specifically, the first lateral support member 50 is a rod-shaped structure, but is not limited thereto, and may also be other components with support strength.

[0098] Preferably, the replacement device 1 further includes a second lateral support member 60, and both ends of the second lateral support member 60 are respectively connected to the first cantilever beam 12 of one of the frames 10 and the second cantilever beam 13 of the other frame 10. In this way, by providing the second lateral support member 60, the overall structure of the replacement device 1 can be made more stable. Specifically, in this embodiment, the first lateral support member 50 is a wire rope. The number of the first lateral support members 50 is two, and the two first lateral support members 50 are arranged in a cross manner. But it is not limited thereto, and may also be other components with support strength.

[0099] The transverse rail 20 is provided with a transverse chute 21, and the first pulley set 31 of the first trolley assembly 30 is slidably arranged in the transverse chute 21. In this way, by providing the transverse chute 21 to accommodate the first pulley set 31, the movement track of the first pulley set 31 can be defined. At both ends of the transverse chute 21 along the width direction W, first blocking members 22 are respectively provided, and the first blocking members 22 are used to block the first pulley set 31 from disengaging from the transverse chute 21. In this embodiment, the first blocking member 22 is a block arranged in the transverse chute 21, but it is not limited thereto. In other embodiments, it may also be a baffle arranged at the end of the transverse chute 21.

[0100] The number of the transverse chutes 21 is two, which are respectively arranged on both sides of the transverse rail 20 along the length direction L; the first trolley assembly 30 includes two groups of first pulley sets 31, and each group of first pulley sets 31 includes at least two pulleys. The two groups of first pulley sets 31 are respectively slidably arranged in the two transverse chutes 21.

[0101] A longitudinal chute 121 is provided on each first cantilever beam 12, and the second pulley sets 41 of the two second trolley assemblies 40 are respectively slidably arranged in the longitudinal chutes 121 on the two first cantilever beams 12; a second blocking member is provided at one end of each longitudinal chute 121 far from the column 11, and the second blocking member is used to block the second pulley set 41 from disengaging from the longitudinal chute 121. In this embodiment, the first connecting plate 151 of the first connecting assembly 15 provided at one end of the first cantilever beam 12 far from the column 11 (i.e., the end of the longitudinal chute 121) is used as the second blocking member. But it is not limited thereto. In other embodiments, the second blocking member may also be a block arranged in the longitudinal chute 121.

[0102] The installation process of the replacement device 1 in this embodiment: After installing the column 11 on the top of the corresponding support structure of the equipment to be repaired, install the first cantilever beam 12 and the second cantilever beam 13, the first tie rod 141 and the second tie rod 142 on both sides of the column 11 along the length direction L, and connect them by bolts and nuts; install and fix the first transverse support member 50 between the two first cantilever beams 12, install the second transverse support member 60 (steel wire rope), and adjust the rotating nut on the steel wire rope until the steel wire rope is tightened; install the second trolley assembly 40 on the two first cantilever beams 12, hang the transverse rail 20 on the second trolley assembly 40, and install the first hanging trolley assembly on the transverse rail 20. Install the first blocking member 22 in the transverse chute 21 of the transverse rail 20 and fix it with bolts and nuts; fix the first tie rod 141 and the second tie rod 142 at the top of the column 11 through the third connecting assembly 17. At the same time, the third connecting assembly 17 also plays a role in protecting the top of the column 11; after the above installation is completed, install the legs 19 on the outer sides of the two columns 11 respectively and fix them with bolts.

[0103] Working principle of the replacement device 1 in this embodiment: The cross rail 20 drives the first trolley assembly 30 to slide back and forth parallel along the length direction L through the second trolley assembly 40 slidably arranged on two first cantilever beams 12. And the first trolley assembly 30 with one end slidably arranged on the cross rail 20 can slide left and right along the width direction W to ensure that it can reach the points where operations are required. Before operation, a counterweight needs to be suspended at the lower end of the second cantilever beam 13, and the weight is the weight of the equipment to be repaired to ensure the stability of the tower structure during the movement of the heavy object. During operation, a chain block can be hung at the lower end of the first trolley assembly 30. After lifting the equipment to be repaired, the equipment to be repaired can be moved to the point where it needs to be placed by pulling the first trolley assembly 30 and the cross rail 20. If the replacement span is large, multiple replacement devices 1 can be used side by side to transfer heavy objects to each other.

[0104] During operation, according to the actual hoisting requirements, select the lengths of the first cantilever beam 12, the second cantilever beam 13 and the cross rail 20 with appropriate spans, and try to control the span within three meters to ensure that the weight of the cross rail 20 is not too heavy and is convenient for installation. The single-piece structural weight of the replacement device 1 is controlled within 20 kg, and the single-piece length is controlled within three meters, which is convenient for carrying and installation. During use, the counterweight on the second cantilever beam 13 needs to be counterweighted according to the weight of the equipment to be repaired actually hoisted.

[0105] The structure of the replacement device 1 in this embodiment is a tower crane structure, which can meet the replacement requirements at different positions. The tower crane structure is fixed at multiple points to improve the stability during operation, while the split splicing structure is light in weight, convenient for carrying and installation, and can be replaced effectively and quickly, and the operation method is simple.

[0106] Although the specific implementation manners of the present invention have been described above, those skilled in the art should understand that this is only for illustration. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A replacement device for replacing equipment to be repaired in a wind turbine generator set, characterized in that: The replacement equipment includes: Two frames arranged side by side, each of the frames comprising a column, a first cantilever beam and a second cantilever beam, the column being arranged in a height direction and being detachably connected to the top of a supporting structure for mounting the equipment to be repaired, the first cantilever beam and the second cantilever beam being arranged in a length direction and being respectively connected to both sides of the column in the length direction; A cross rail, wherein the cross rail is arranged along the width direction, and two ends of the cross rail are respectively connected to the first cantilever beams of the two frames; A first pulley assembly, wherein the first pulley assembly is slidably disposed on the cross rail and is used to be connected to the equipment to be repaired; a second pulley assembly, wherein one end of the second pulley assembly is slidably disposed on the first cantilever beam along the height direction, and the other end is fixedly connected to the cross rail; Wherein, a counterweight matching the weight of the equipment to be repaired can be hung on the second cantilever beam.

2. The replacement device according to claim 1, characterized in that The first cantilever beam and the second cantilever beam are both spaced apart from the top end of the column; The frame body further includes a first pull rod, two ends of which are respectively connected to the top of the column and one end of the first cantilever beam away from the column; and / or, The frame body also includes a second pull rod, and two ends of the second pull rod are respectively connected to the top end of the column and an end of the second cantilever beam away from the column.

3. The replacement device according to claim 2, characterized in that The frame body further includes a first connecting assembly, the first connecting assembly connects the first pull rod and the first cantilever beam, the first connecting assembly includes first connecting plates respectively clamped on both sides of the first cantilever beam along the width direction, the first pull rod is connected to one end of the first connecting plate along the height direction through a first fixing assembly; and / or, The frame also includes a second connecting component, which connects the second pull rod and the second cantilever beam. The second connecting component includes second connecting plates respectively clamped on both sides of the second cantilever beam along the width direction. The second pull rod is connected to one end of the second connecting plate along the height direction through a second fixing component.

4. The replacement device according to claim 2, characterized in that The frame body further includes a third connecting assembly, wherein the third connecting assembly connects the first pull rod and the second pull rod; The third connecting assembly includes third connecting plates located on both sides of the column along the width direction, the third connecting plates are fixedly connected to the column, and the first pull rod and the second pull rod are respectively connected to both ends of the third connecting plate along the length direction through a third fixing assembly.

5. The replacement device according to claim 1, characterized in that The frame further includes a fourth connecting component, wherein the fourth connecting component connects the first cantilever beam and the second cantilever beam; The fourth connecting assembly includes fourth connecting plates respectively located on both sides of the column along the width direction, the fourth connecting plates are fixedly connected to the column, and the first cantilever beam and the second cantilever beam are respectively connected to two ends of the fourth connecting plate along the length direction through fourth fixing assemblies.

6. The replacement device according to claim 1, characterized in that The frame body also includes a support leg, which is arranged in the same direction as the column, and the top end of the support leg is connected to the column, and the bottom end of the support leg is spaced apart from the bottom end of the column.

7. The replacement device according to claim 1, characterized in that The replacement device also includes a first transverse support member, and two ends of the first transverse support member are respectively connected to the first cantilever beams of the two frames.

8. The replacement device according to claim 1, characterized in that The replacement device also includes a second transverse support member, and two ends of the second transverse support member are respectively connected to the first cantilever beam of one of the frames and the second cantilever beam of the other frame.

9. The replacement device according to claim 1, characterized in that: The transverse rail is provided with a transverse slide groove, and the first pulley block of the first pulley assembly is slidably disposed in the transverse slide groove; The two ends of the transverse slide groove along the width direction are respectively provided with first blocking members, and the first blocking members are used to prevent the first pulley block from leaving the transverse slide groove.

10. The replacement device according to claim 1, characterized in that Each of the first cantilever beams is provided with a longitudinal slide groove, and the second pulley blocks of the two second pulley assemblies are respectively slidably disposed in the longitudinal slide grooves on the two first cantilever beams; A second blocking member is provided at one end of each of the longitudinal slide grooves away from the column, and the second blocking member is used to prevent the second pulley block from leaving the longitudinal slide groove.

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