Main transformer climbing auxiliary device

Abstract

The main transformer climbing auxiliary device comprises a climbing assembly and a lifting assembly which are arranged in parallel, the climbing assembly comprises a fixed vertical ladder and a movable vertical ladder which are arranged in a mutual sliding mode, the edge of one side of the movable vertical ladder is further connected with a cover plate in a rotating mode, and a locking device is arranged on the inner side of the cover plate. The lifting assembly comprises a guide rail vertically arranged on the side face of the main transformer and a bearing device slidably installed on the guide rail, and a driving device is further arranged at the top, corresponding to the guide rail, of the main transformer. According to the movable vertical ladder, the difficulty of climbing to the top of the main transformer is reduced, the load in the climbing process is reduced, the convenience and safety of climbing are improved, irrelevant personnel are difficult to climb by using the movable vertical ladder by using the locking device, and the probability of safety accidents caused by accidental climbing in the live working process of the main transformer is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to a main transformer climbing auxiliary device. Background Technology

[0002] The main transformer, or main transformer for short, is used for voltage transformation and power distribution, and is the core component of a substation. Main transformers generally have a large capacity and require high reliability. Although the failure rate of main transformers is not high, a failure can cause significant losses. At best, it may cause equipment malfunctions; at worst, it can cause fires and endanger normal transportation safety. Therefore, analyzing the causes of transformer failures and taking corresponding preventative measures is of great importance.

[0003] To understand the operating status of the main transformer and ensure its reliability and safety, regular maintenance and repairs are necessary. During these procedures, operators must use a ladder attached to the main transformer to climb to the top. Typically, for safety reasons, to prevent unauthorized personnel from climbing and to avoid accidental power connection while climbing, the starting point of the ladder is usually set quite high. This makes it difficult to climb without auxiliary tools during routine maintenance, and carrying auxiliary tools further increases the burden on the operators.

[0004] In addition, while climbing, staff also need to carry various power auxiliary equipment, including grounding wires and multiple grounding poles. The grounding wires are quite heavy, and the grounding poles are as long as 4-6 meters. Carrying these devices while climbing is not only inconvenient but also poses certain safety risks.

[0005] At the same time, despite the use of a high starting point, it is still impossible to completely prevent unauthorized personnel from climbing, which poses a certain safety risk. Therefore, a locking device is needed to lock the ladder when it is not in use, and only staff with a key can open it and climb it when needed.

[0006] Therefore, there is an urgent need for a main transformer climbing auxiliary device to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a main transformer climbing auxiliary device to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a main transformer climbing auxiliary device, wherein the climbing auxiliary device is set corresponding to one of the vertical sides of the main transformer, and includes a climbing component and a lifting component arranged in parallel. The climbing component includes a fixed straight ladder vertically fixed to the side of the main transformer and a movable straight ladder slidably set on the fixed straight ladder. A certain gap is left between the bottom end of the fixed straight ladder and the ground. The movable straight ladder is close to and partially overlaps the fixed straight ladder, and can slide up and down along the direction of the fixed straight ladder. The length of the movable straight ladder is not less than the gap between the bottom end of the fixed straight ladder and the ground.

[0009] A cover plate is rotatably connected to one edge of the movable ladder. The width of the cover plate corresponds to the width of the movable ladder, and a locking device is provided on the inner side of the cover plate.

[0010] The lifting assembly includes a guide rail vertically mounted on the side of the main transformer and a support device slidably mounted on the guide rail. The support device includes a vertical placement cylinder and a hook on one side of the placement cylinder. The main transformer is also provided with a driving device at the top edge of the guide rail, thereby driving the support device to move up and down along the guide rail.

[0011] Preferably, both the fixed ladder and the movable ladder include two vertical ladder sides arranged side by side and several horizontal bars arranged between the ladder sides. The ladder side of the fixed ladder has a hollow structure, and a vertical channel is provided on its outer side to connect to the outside. A first slider is provided inside the ladder side of the fixed ladder. The area of ​​the first slider corresponding to the channel extends to the outside and is fixedly connected to the ladder side of the movable ladder, so that the movable ladder slides along the fixed ladder by the first slider.

[0012] Preferably, the locking device includes a slot formed by an upper plate and a lower plate arranged horizontally side by side. The slot is set to correspond to one of the crossbars of the movable ladder, so that when the cover plate is rotated to fit tightly against the outside of the movable ladder, the upper plate and the lower plate can just lock the crossbar in between. The outer ends of the upper plate and the lower plate are also rotatably connected to a movable piece, so that the upper plate, the lower plate and the movable piece can completely wrap the crossbar. When the movable piece is rotated to a state perpendicular to the upper plate or the lower plate, it has an overlapping part, and the overlapping part is provided with a corresponding round hole.

[0013] Preferably, a horizontal stop is rotatably provided on the upper surface of one of the crossbars of the movable ladder. The stop can be rotated to be parallel to and stored on the surface of the crossbar, or can extend vertically outside the crossbar. When the movable ladder needs to slide, the stop is rotated to be parallel to the crossbar. When it needs to be stored, the movable ladder is raised to a height where its bottom end is flush with the fixed ladder, and then the stop is rotated to be perpendicular to the crossbar. This allows the stop to be mounted above the two corresponding crossbars of the fixed ladder and the movable ladder, thereby supporting the movable ladder.

[0014] Preferably, the guide rail is a T-shaped rail, and a second slider is movably arranged inside the guide rail. A connecting rod is provided on one side of the second slider and extends to the outside of the guide rail. The placement cylinder and the hook are both fixedly installed on the connecting rod.

[0015] Preferably, there is a certain gap between the two sides of the second slider and the inner wall of the guide rail. Several limiting mechanisms are provided on the inner walls of the two sides of the guide rail. The limiting mechanisms allow the second slider to move only upward. A connecting rod is provided at the front end of the second slider. When the second pulley falls, it will be blocked by the limiting mechanisms.

[0016] Preferably, the limiting mechanism includes a limiting rod and a limiting block. The limiting rod is rotatably disposed on both sides of the guide rail. A horizontal rotating shaft is provided at the middle of the limiting rod near one end of the inner wall of the corresponding guide rail. The rotating shaft restricts the limiting rod to rotate only in the vertical direction. The limiting block is correspondingly disposed above the limiting rod, so that when the limiting rod rotates to the horizontal position, its end near the inner wall of the guide rail abuts against the limiting block and is blocked. A torsion spring is provided on the rotating shaft. The torsion spring controls the limiting rod to tilt upwards and inwards towards the inside of the guide rail in the normal state.

[0017] Preferably, the guide rail side above the limiting block is also provided with a connecting hole to the outside. Two pull wires are symmetrically arranged on both sides of the guide rail. The top end of the pull wire is fixedly connected to the two sides of the outside of the guide rail, and the top end of the pull wire is connected to the guide rail through an elastic element. The pull wire passes through the outside of the connecting hole in sequence, and its bottom end is closed below the guide rail and provided with a pull ring. It also includes a traction line that passes through the connecting hole. One end of the traction line is connected to the pull wire, and the other end is connected to the position of the limiting rod relative to the rotating shaft near the middle of the guide rail.

[0018] Preferably, a pulley is provided at the bottom of the connection hole near the outer side of the guide rail, and the traction line is connected to the pull line after passing through the pulley.

[0019] Preferably, the driving device includes a winch with a wire rope, the winch being a manual winch, and the carrying device is fixedly connected to the bottom end of the wire rope.

[0020] The present invention has the following beneficial effects:

[0021] 1. The climbing component of this utility model includes a fixed ladder and a movable ladder. The bottom of the fixed ladder is higher, while the movable ladder is slidably positioned close to the fixed ladder, allowing it to slide vertically. When needed, it can slide to a position close to the ground, allowing operators to start climbing directly from the ground. This reduces the difficulty of climbing to the top of the main transformer and eliminates the need for other auxiliary equipment, thus reducing the load carried.

[0022] 2. In this utility model, a lifting component is also arranged in parallel on one side of the climbing component. The equipment is transported by moving vertically along the guide rail through the carrying device. The placement cylinder can be used to vertically place multiple grounding rods, and the hook can be used to hang grounding wires. With the help of the driving device set on the top of the main transformer, the operator can first place the grounding rods and grounding wires on the ground, then climb to the top of the main transformer through the climbing component, and finally operate the driving device to raise the carrying device and take out the grounding rods and grounding wires. This completes the easy and convenient transportation of equipment, reduces the load during the climbing process, and improves the convenience and safety of climbing.

[0023] 3. The movable ladder of this utility model is also rotatably connected to a cover plate on one side edge. The width of the cover plate corresponds to the width of the movable ladder. A locking device is provided on the inner side of the cover plate. Therefore, when the movable ladder is raised to overlap with the fixed ladder, the bottom of the movable ladder can be closed by the cover plate and locked by the locking device, making it impossible for it to descend. This makes it difficult for unauthorized personnel to climb the movable ladder, reducing the probability of safety accidents caused by accidental climbing during the operation of the main transformer under power. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the movable ladder in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the horizontal cross-section of the connection surface between the fixed ladder and the movable ladder in an embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the horizontal cross-section of the guide rail and the second slider in an embodiment of this utility model;

[0028] Figure 5 This is a schematic diagram of the front structure of the guide rail in an embodiment of this utility model;

[0029] Figure 6 for Figure 5 An enlarged schematic diagram of part A in the middle;

[0030] In the above attached figures: 1. Fixed straight ladder; 2. Movable straight ladder; 3. Cover plate; 4. Guide rail; 5. Bearing device; 6. Winch; 7. Pull line; 8. Traction line; 11. First slider; 21. Baffle; 31. Locking device; 41. Second slider; 42. Connecting rod; 43. Limiting rod; 44. Rotating shaft; 45. Limiting block; 46. Connecting hole; 51. Placement cylinder; 52. Hook; 71. Pull ring; 311. Upper plate; 312. Lower plate; 313. Movable piece; 314. Round hole; 461. Pulley. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0032] like Figure 1 As shown in the figure, this utility model embodiment proposes a main transformer climbing assistance device. In this embodiment, the main transformer is a cuboid structure, and the climbing assistance device is set on one of the vertical sides of the main transformer.

[0033] Specifically, the climbing assistance device in this embodiment includes a climbing component and a lifting component arranged side by side. The climbing component includes a fixed ladder 1 vertically fixed to the side of the main transformer and a movable ladder 2 slidably mounted on the fixed ladder 1. The bottom of the fixed ladder 1 has a certain gap with the ground, usually more than half a person's height, making it difficult to climb the fixed ladder 1 directly without contacting other auxiliary equipment. The movable ladder 2 is close to and partially overlaps the fixed ladder 1, and can slide up and down along the direction of the fixed ladder 1. The length of the movable ladder 2 is not less than the gap between the bottom of the fixed ladder 1 and the ground. The movable ladder 2 can be retracted to a state where it completely overlaps with the fixed ladder 1, making it difficult to climb; the movable ladder 2 can also move downwards to touch the ground, which is the working state for easy climbing.

[0034] like Figure 2 As shown in this embodiment, a cover plate 3 is rotatably connected to one edge of the movable ladder 2. The width of the cover plate 3 corresponds to the width of the movable ladder 2. A locking device 31 is provided on the inner side of the cover plate 3, and a warning message is written on the outer side. When climbing is required, the cover plate 3 is opened, the locking device 31 is released, and the movable ladder 2 can slide freely for easy climbing. After the maintenance work is completed, personnel climb down the main transformer, raise the movable ladder 2, then close the cover plate 3 and use the locking device 31 to lock the movable ladder 2, making it unable to move. At this time, non-workers cannot climb through the movable ladder 2, and the bottom of the fixed ladder 1 is also covered by the cover plate 3, making it difficult to climb, thus providing good protection.

[0035] In this preferred embodiment, both the fixed ladder 1 and the movable ladder 2 include two vertical ladder sides arranged side by side and several horizontal crossbars arranged between the ladder sides. The ladder sides of the fixed ladder 1 are hollow, and vertical channels are provided on their outer sides to connect to the outside. Figure 3As shown, the fixed ladder 1 has a first slider 11 inside its side. The first slider 11 extends to the outside of the area corresponding to the channel and is fixedly connected to the side of the movable ladder 2, so that the movable ladder 2 slides along the fixed ladder 1 via the first slider 11. As a further preferred embodiment, a horizontal stop bar is rotatably provided on the upper surface of one of the crossbars of the movable ladder 2. The stop bar can be rotated to be parallel and stored on the surface of the crossbar, or extend vertically outside the crossbar. When the movable ladder 2 needs to slide, the baffle 21 is rotated parallel to the crossbar. When it needs to be stored, the movable ladder 2 is raised to a height where its bottom is level with the fixed ladder 1, and then the baffle 21 is rotated perpendicular to the crossbar. This allows the baffle 21 to be positioned above the two corresponding crossbars of the fixed ladder 1 and the movable ladder 2, thus supporting the movable ladder 2 and preventing it from falling. This allows operators to keep the movable ladder 2 in a raised state without having to hold it while performing locking operations. It also prevents the crossbar from suddenly falling after the locking device 31 is opened, which could injure the operator's legs and feet, thus reducing safety risks.

[0036] Corresponding to the above structure, the locking device 31 includes a slot formed by an upper plate 311 and a lower plate 312 arranged horizontally side by side. The slot is set to one of the crossbars of the movable ladder 2, so that when the cover plate 3 is rotated to be close to the outside of the movable ladder 2, the upper plate 311 and the lower plate 312 can just lock the crossbar between them. The outer ends of the upper plate 311 and the lower plate 312 are also rotatably connected to a movable piece 313, so that the upper plate 311, the lower plate 312 and the movable piece 313 can completely wrap the crossbar. When the movable piece 313 is rotated to a state perpendicular to the upper plate 311 or the lower plate 312, it has an overlapping part, and the overlapping part is provided with a corresponding round hole 314. At this time, a common mechanical lock can be used to lock the door by passing through the two overlapping round holes 314 at the same time.

[0037] The lifting assembly includes a guide rail 4 vertically mounted on the side of the main transformer and a support device 5 slidably mounted on the guide rail 4. The support device 5 includes a vertical placement cylinder 51 and a hook 52 located on one side of the placement cylinder 51. The main transformer is also equipped with a drive device at the top edge corresponding to the guide rail 4, thereby driving the support device 5 to move up and down along the guide rail 4. The drive device includes a winch 6 with a steel wire rope. The winch 6 is a manual winch. The bottom end of the steel wire rope is fixedly connected to the support device 5. After the operator climbs to the top of the main transformer, he operates the winch 6 to lift the support device 5, thereby transporting the grounding rod vertically placed in the placement cylinder 51 and the grounding wire hanging on the hook 52 in a coil shape.

[0038] like Figure 4As shown, in a further embodiment, the guide rail 4 is a T-shaped track, and a second slider 41 is movably installed inside the guide rail 4. A connecting rod extends from one side of the second slider 41 to the outside of the guide rail 4. The placement cylinder 51 and the hook 52 are both fixedly installed on the connecting rod. Preferably, a certain distance is left between the two sides of the second slider 41 and the inner wall of the guide rail 4. Several limiting mechanisms are provided on the inner walls of both sides of the guide rail 4. These limiting mechanisms ensure that the second slider 41 can only move upwards, and the second pulley 461 will be blocked by the limiting mechanisms when it falls. Therefore, there is no need to worry about the bearing device 5, grounding rod, and grounding wire falling downwards due to accidental loosening or other factors, causing damage to the equipment or injuring personnel below. Furthermore, after the bearing device 5 moves to the top of the guide rail 4, it can also remain stable through the limiting mechanisms, making it easy for operators to remove the grounding rod, grounding wire, and other equipment.

[0039] like Figure 5 As shown, in this embodiment, the limiting mechanism includes a limiting rod 43 and a limiting block 45. The limiting rod 43 is rotatably disposed on both sides of the guide rail 4. A horizontal rotating shaft 44 is provided at the middle of the limiting rod 43 near the inner wall of the corresponding guide rail 4. The rotating shaft 44 restricts the limiting rod 43 to rotate only in the vertical direction. The limiting block 45 is correspondingly disposed above the limiting rod 43, so that when the limiting rod 43 rotates to the horizontal position, the end near the inner wall of the guide rail 4 abuts against and is blocked by the limiting block 45. A torsion spring is provided on the rotating shaft 44. The torsion spring controls the limiting rod 43 to tilt upwards towards the inside of the guide rail 4 in the normal state. When the second slider 41 slides upward, it passes through the inclined upward limiting rod 43 in sequence, and pushes it upward to a vertical state before passing through. After that, the limiting rod 43 returns to its original position under the action of the torsion spring. When the second slider 41 moves downward, it will push the limiting rod 43 downward. After the limiting rod 43 rotates to the horizontal, it is blocked by the limiting block 45 and cannot rotate further, thus completing the downward locking. At this time, even if the second slider 41 is not subjected to external tension, it will not fall downward with the bearing device 5.

[0040] like Figure 6As shown, preferably, the guide rail 4 above the limiting block 45 is also provided with a connecting hole 46 connecting to the outside. Two pull wires 7 are symmetrically arranged on both sides of the guide rail 4. The top ends of the pull wires 7 are fixedly connected to the outer sides of the guide rail 4, and the top ends of the pull wires 7 are connected to the guide rail 4 by an elastic element. The pull wires 7 pass through the outside of the connecting hole 46 in sequence, and their bottom ends are closed below the guide rail 4 and provided with a pull ring 71. It also includes a traction line 8 that passes through the connecting hole 46. One end of the traction line 8 is connected to the pull wire 7, and the other end is connected to the position of the limiting rod 43 relative to the pivot 44 near the middle of the guide rail 4. A pulley 461 is also provided at the bottom of the connecting hole 46 near the outer side of the guide rail 4. The traction line 8 passes through the pulley 461 and is connected to the pull wire 7. When the pull ring 71 is used to pull the pull cable 7 downwards, the combination of the pull cable 7 and the traction cable 8 causes the traction cable 8 to pull the limiting rod 43 upwards, rotating it to a vertical position. It is then blocked by the limiting block 45 and remains in a vertical state. At this point, all the limiting rods 43 are vertical, meaning they do not obstruct the second slider 41, which can then fall naturally. This allows the operator to easily reset the bearing device 5 to the bottom of the guide rail 4 after maintenance, facilitating the next operation.

[0041] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A climbing assistance device for a main transformer, wherein the climbing assistance device is disposed corresponding to one of the vertical sides of the main transformer, characterized in that: The system includes a climbing component and a lifting component arranged in parallel. The climbing component includes a fixed straight ladder (1) that is vertically fixed to the side of the main transformer and a movable straight ladder (2) that is slidably arranged on the fixed straight ladder (1). The bottom end of the fixed straight ladder (1) is left with a certain gap from the ground. The movable straight ladder (2) is close to and partially overlaps the fixed straight ladder (1) and can slide up and down along the direction of the fixed straight ladder (1). The length of the movable straight ladder (2) is not less than the gap between the bottom end of the fixed straight ladder (1) and the ground. The movable straight ladder (2) is also rotatably connected to a cover plate (3) on one side edge. The width of the cover plate (3) corresponds to the width of the movable straight ladder (2). A locking device (31) is provided on the inner side of the cover plate (3). The lifting assembly includes a guide rail (4) vertically mounted on the side of the main transformer and a support device (5) slidably mounted on the guide rail (4). The support device (5) includes a vertical placement cylinder (51) and a hook (52) on one side of the placement cylinder (51). The main transformer is also provided with a driving device at the top edge of the guide rail (4) to drive the support device (5) to move up and down along the guide rail (4).

2. The main transformer climbing auxiliary device according to claim 1, characterized in that: Both the fixed ladder (1) and the movable ladder (2) include two vertical ladder sides arranged side by side and several horizontal bars arranged between the ladder sides. The ladder side of the fixed ladder (1) is a hollow structure with a vertical channel on its outer side connecting to the outside. The ladder side of the fixed ladder (1) is provided with a first slider (11). The area of ​​the first slider (11) corresponding to the channel extends to the outside and is fixedly connected to the ladder side of the movable ladder (2), so that the movable ladder (2) slides along the fixed ladder (1) through the first slider (11).

3. The main transformer climbing auxiliary device according to claim 2, characterized in that: The locking device (31) includes a slot formed by an upper plate (311) and a lower plate (312) arranged horizontally in parallel. The slot is set to correspond to one of the crossbars of the movable ladder (2), so that when the cover plate (3) is rotated to be close to the outside of the movable ladder (2), the upper plate (311) and the lower plate (312) can just lock the crossbar in between. The outer ends of the upper plate (311) and the lower plate (312) are also rotatably connected to a movable piece (313), so that the upper plate (311), the lower plate (312) and the movable piece (313) can completely wrap the crossbar. The movable piece (313) has an overlapping part when rotated to a state perpendicular to the upper plate (311) or the lower plate (312), and the overlapping part is provided with a corresponding round hole (314).

4. The main transformer climbing auxiliary device according to claim 2, characterized in that: The movable ladder (2) has a horizontal stop bar rotatably mounted on the upper surface of one of its crossbars. The stop bar can be rotated to be parallel to and stored on the surface of the crossbar, or can extend vertically out of the crossbar. When the movable ladder (2) needs to slide, the baffle (21) is rotated to be parallel to the crossbar. When it needs to be stored, the movable ladder (2) is raised to a height where its bottom end is level with that of the fixed ladder (1), and then the baffle (21) is rotated to be perpendicular to the crossbar. This allows the baffle (21) to be mounted above the two crossbars corresponding to the fixed ladder (1) and the movable ladder (2), thereby supporting the movable ladder (2).

5. The main transformer climbing auxiliary device according to claim 1, characterized in that: The guide rail (4) is a T-shaped rail. A second slider (41) is movably installed inside the guide rail (4). A connecting rod is provided on one side of the second slider (41) and extends to the outside of the guide rail (4). The placement cylinder (51) and the hook (52) are both fixedly installed on the connecting rod.

6. The main transformer climbing auxiliary device according to claim 5, characterized in that: There is a certain gap between the second slider (41) and the inner wall of the guide rail (4). Several limiting mechanisms are provided on the inner walls of the guide rail (4). The limiting mechanisms allow the second slider (41) to move only upward. The front end of the second slider (41) is provided with a connecting rod (42). When the second pulley (461) falls, it will be blocked by the limiting mechanism.

7. The main transformer climbing auxiliary device according to claim 6, characterized in that: The limiting mechanism includes a limiting rod (43) and a limiting block (45). The limiting rod (43) is rotatably mounted on both sides of the guide rail (4). A horizontal rotating shaft (44) is provided at the middle of the limiting rod (43) near the inner wall of the corresponding guide rail (4). The rotating shaft (44) restricts the limiting rod (43) to rotate only in the vertical direction. The limiting block (45) is correspondingly mounted above the limiting rod (43) and (44), so that when the limiting rod (43) rotates to the horizontal position, the end of it near the inner wall of the guide rail (4) abuts against the limiting block (45) and is blocked. A torsion spring is provided on the rotating shaft (44). The torsion spring controls the limiting rod (43) to tilt upwards towards the inside of the guide rail (4) in the normal state.

8. The main transformer climbing auxiliary device according to claim 7, characterized in that: The guide rail (4) above the limiting block (45) is also provided with a connecting hole (46) that connects to the outside. Two pull wires (7) are symmetrically arranged on both sides of the guide rail (4). The top end of the pull wire (7) is fixedly connected to the two sides of the outside of the guide rail (4), and the top end of the pull wire (7) is connected to the guide rail (4) through an elastic element. The pull wire (7) passes through the outside of the connecting hole (46) in sequence. Its bottom end is closed below the guide rail (4) and is provided with a pull ring (71). It also includes a traction line (8) that passes through the connecting hole (46). One end of the traction line (8) is connected to the pull wire (7), and the other end is connected to the position of the limiting rod (43) relative to the rotating shaft (44) near the middle of the guide rail (4).

9. A main transformer climbing auxiliary device according to claim 8, characterized in that: The bottom of the connection hole (46) near the outer side of the guide rail (4) is also provided with a pulley (461), and the traction line (8) is connected to the pull line (7) after passing through the pulley (461).

10. The main transformer climbing auxiliary device according to claim 1, characterized in that: The driving device includes a winch (6) with a wire rope, the winch (6) is a manual winch, and the bearing device (5) is fixedly connected to the bottom end of the wire rope.

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