An oil-immersed high-voltage transformer hoisting device and construction process

Abstract

This application discloses an oil-immersed high-voltage transformer hoisting device, comprising two support frames for installation on the same circumferential surface of a utility pole. The length direction of the two support frames is perpendicular to the length direction of the utility pole. A lifting seat is slidably connected to the two support frames along their length direction. One end of the lifting seat is equipped with a rope drive assembly for driving the lifting seat to slide. A transmission component is provided at the end of the support frame away from the utility pole. A pulley block is provided inside the lifting seat. One end of the transmission component is drively connected to the pulley block. A locking assembly for locking the transmission component is provided on the side of the support frame away from the utility pole. A hoisting rope for hoisting the transformer is provided on the pulley block. This application can reduce the obstruction of other supporting equipment on the utility pole during hoisting, making it easier for construction personnel to install the transformer on a single utility pole, thus reducing hoisting costs and improving the efficiency of transformer hoisting.

Description

Technical Field

[0001] This application relates to the technical field of power equipment installation, and in particular to an oil-immersed high-voltage transformer hoisting device and construction process. Background Technology

[0002] A transformer is a static electrical device used to transform alternating current voltage and current to transmit alternating current electrical energy. Based on their cooling method, transformers are classified into dry-type transformers and oil-immersed transformers. Currently, outdoor transformer installation primarily relies on cranes for hoisting.

[0003] Currently, outdoor pole-mounted transformers are mainly installed and fixed between two power line poles. However, in areas with low power grid load density and wide population distribution, using single-phase pole-mounted transformers is more beneficial for reducing electricity costs and improving economic efficiency. When installing pole-mounted transformers in areas with harsh working environments where cranes cannot access the area, manual construction of scaffolding is mainly relied upon to hoist the transformer into place.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: When installing pole-mounted transformers in areas with harsh working environments, the transformer is mainly hoisted by building simple supports on two power poles. However, if a support is built on a single power pole, the structure and construction of the support often become more complex in order to maintain balance, which leads to longer construction time and reduced hoisting efficiency. Summary of the Invention

[0005] To help improve the efficiency of transformer hoisting, this application provides an oil-immersed high-voltage transformer hoisting device and construction process.

[0006] The technical solution for the hoisting device and construction process of an oil-immersed high-voltage transformer provided in this application is as follows:

[0007] An oil-immersed high-voltage transformer hoisting device includes two support frames for installation on the same circumferential surface of a utility pole. The length direction of the two support frames is perpendicular to the length direction of the utility pole. A lifting seat is slidably connected to the two support frames along their length direction. One end of the lifting seat is provided with a rope drive assembly for driving the lifting seat to slide. A transmission component is provided at the end of the support frame away from the utility pole. A pulley block is provided inside the lifting seat. One end of the transmission component is drively connected to the pulley block. A locking assembly for locking the transmission component is provided on the side of the support frame away from the utility pole. A hoisting rope for hoisting the transformer is provided on the pulley block.

[0008] By adopting the above technical solution, the hoisting device is connected to the utility pole, reducing the likelihood of difficulties in installing the support due to harsh ground conditions. Furthermore, the hoisting device can be assembled on the ground before being installed on the utility pole, improving installation efficiency. When replacing or maintaining the transformer, the position of the transformer can be adjusted using the rope drive and locking components, facilitating installation from the side of the utility pole. This reduces the risk of the hoisting rope colliding with existing equipment or high-voltage lines on the pole, ensuring safety while further improving hoisting efficiency.

[0009] Optionally, the pulley block includes a first lifting wheel rotatably connected to the lifting seat, the transmission component is connected to the lifting rope, and both the transmission component and the lifting rope are drively connected to the first lifting wheel.

[0010] By adopting the above technical solution, the distance the lifting seat moves is equal to the distance the hoisting rope rises. Under this solution, it is beneficial for construction personnel to control the hoisting height of the transformer and improve hoisting efficiency.

[0011] Optionally, the pulley block includes a transmission sprocket and a second lifting wheel coaxially rotatably connected within the lifting seat. The transmission component is configured as a transmission chain, which is connected to the transmission sprocket. One end of the transmission chain is connected to a slider that is slidably connected to the support frame. The lifting rope is wound around the second lifting wheel, and the diameter of the transmission sprocket is smaller than the diameter of the second lifting wheel.

[0012] By adopting the above technical solution, it is beneficial to increase the vertical lifting distance of the transformer, thereby shortening the length of the support frame during the design phase for easier carrying.

[0013] Optionally, the locking assembly includes a locking drive wheel and a locking traction machine. The locking drive wheel is rotatably connected to the end of the support frame away from the utility pole, and the transmission component is connected to the locking traction machine after passing around the locking drive wheel.

[0014] By adopting the above technical solution, the locking traction machine is installed close to the ground, which can effectively adjust the lifting position of the transformer. In the actual installation process, one person can observe the position of the transformer and direct the operation from above the utility pole, while another person operates the locking traction machine on the ground. The installation of the transformer can be completed by the two people working together, which further reduces labor costs and improves hoisting efficiency.

[0015] Optionally, two sets of pulleys are configured on the same support frame, and two sets of transmission components and suspension ropes are configured accordingly.

[0016] By adopting the above technical solution, four hoisting ropes are installed on the two support frames. The four hoisting ropes are used to hook the four points of the transformer. Under these conditions, the four points of the transformer are raised and lowered synchronously, which helps to maintain the balance of the transformer during the hoisting process and improves the stability of the hoisting.

[0017] Optionally, a sliding block that slides through the inner wall of the support frame is fixed to the bottom side of the lifting seat, and a roller assembly is connected between the peripheral side of the lifting seat and the top side of the support frame.

[0018] By adopting the above technical solution, the sliding block facilitates the connection between the support frame and the lifting seat by construction personnel, and also ensures the stable sliding of the lifting seat on the support frame. The roller set reduces the friction between the lifting seat and the sliding block, which helps to reduce wear and tear.

[0019] Optionally, the rope drive assembly includes a drive rope, a rope sheave, and an electric traction machine. One end of the drive rope is connected to the side of the lifting seat, the rope sheave is rotatably connected to the end of the support frame away from the lifting seat, and the other end of the drive rope passes around the rope sheave and is connected to the electric traction machine.

[0020] By adopting the above technical solution, the lifting seat can be moved by pulling the drive rope with an electric traction machine, which can greatly save manpower. At the same time, the electric traction machine can be powered by a battery or other power supply equipment. Both the battery and the electric traction machine are easy to carry, connect and install, thus effectively improving the installation efficiency of transformers in some harsh environments.

[0021] Optionally, a main clamp seat is connected between the support frame and the utility pole. The main clamp seat includes a single clamp for fixing to the utility pole and a connecting piece connecting the single clamp to the support frame. The single clamps between the two support frames are fixed to each other.

[0022] By adopting the above technical solution, the efficiency of installing the two support frames on the utility pole can be improved, while ensuring that the two support frames are parallel in the same plane, thereby improving the stability of the hoisted transformer.

[0023] Optionally, a reinforcing rod is connected between the end of the support frame and the utility pole.

[0024] By adopting the above technical solution, the load-bearing capacity of the support frame is improved by using reinforcing rods, thereby ensuring the stability of the transformer during the hoisting process.

[0025] A hoisting construction process for an oil-immersed high-voltage transformer includes the following steps:

[0026] S1. Install the crossarm horizontally on the utility pole;

[0027] S2. Assemble the pulley block and the lifting seat on the ground, install the lifting seat on the support frame, and connect the rope drive assembly, transmission component, locking assembly and hoisting rope to the support frame in sequence.

[0028] S3. Install the support frame horizontally on the utility pole above the crossarm, with the extension direction of the support frame consistent with the extension direction of the crossarm.

[0029] S4. Position the oil-immersed high-voltage transformer and secure the lifting rope to the oil-immersed high-voltage transformer.

[0030] S5. Lock the transmission component by locking the locking component, and pull the lifting seat along the direction close to the utility pole by the rope drive component, so that the transformer tilts upward.

[0031] S6. After the transformer moves to the predetermined position above the crossarm, the rope drive assembly locks, the locking assembly releases, and the transformer descends onto the crossarm.

[0032] S7. Secure the transformer and crossarm to complete the transformer hoisting.

[0033] By adopting the above technical solution, this hoisting process uses the utility pole as a support point, reducing the need to level the ground near the utility pole and then erect a support frame. At the same time, during the process of dismantling and installing transformers, whether it is a new transformer installation or a subsequent replacement and maintenance of the transformer, the use of this hoisting device can greatly reduce the interference of other supporting electrical equipment on the utility pole to the transformer hoisting, thereby effectively improving the efficiency of transformer hoisting and reducing hoisting costs.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] 1. This hoisting device connects to the utility pole, reducing the likelihood of difficulties in installing supports due to harsh ground conditions. Furthermore, the device can be assembled on the ground before being installed on the pole, improving installation efficiency. When replacing or maintaining the transformer, the rope drive and locking components allow for adjustment of the transformer's position, facilitating installation from the side of the pole. This reduces the risk of the hoisting rope colliding with existing fixtures or high-voltage lines on the pole, ensuring safety while further improving hoisting efficiency.

[0036] 2. This hoisting device requires only two people to operate. One person controls the rope drive and locking components on the ground to lift and lower the transformer, while the other person directs the people on the ground to operate the device on the transformer platform, so as to achieve precise positioning of the transformer and greatly improve the hoisting efficiency of the transformer.

[0037] 3. In the past, the method of hoisting transformers by setting up scaffolds or using hand-operated hoists was time-consuming and labor-intensive, requiring the cooperation of multiple people. Replacing a transformer would require about six people working for four hours. However, this application uses a hoisting device that can install the transformer on the utility pole within one hour, saving time and labor and greatly improving the efficiency of hoisting transformers. Attached Figure Description

[0038] Figure 1 This is a front view of the overall structure of Embodiment 1 of this application.

[0039] Figure 2 This is a top view of the support frame, which is the main feature of Embodiment 1 of this application.

[0040] Figure 3 This is a cross-sectional view of the lifting seat and support frame of Embodiment 1 of this application.

[0041] Figure 4 This is a side view of the overall structure of Embodiment 1 of this application.

[0042] Figure 5 This is a schematic diagram of the pulley system of Embodiment 2 of this application.

[0043] Figure 6 This is a cross-sectional view of the lifting seat and support frame of Embodiment 2 of this application.

[0044] Figure 7 This is a schematic diagram of the pulley system of Embodiment 3 of this application.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Utility pole; 10. Transformer; 11. Crossarm; 2. Support frame; 3. Main clamp seat; 31. Single clamp; 32. Connecting piece; 4. Lifting seat; 41. Sliding block; 42. Roller block; 5. Pulley block; 51. First lifting wheel; 511. Lifting rope; 512. Hook; 52. Transmission sprocket; 53. Second lifting wheel; 54. Sliding block; 6. Mounting plate; 61. Reinforcing rod; 62. First fixing plate; 63. Second fixing plate; 64. Hoop; 65. Fastening part; 7. Transmission component; 8. Locking assembly; 81. Locking transmission wheel; 82. Locking traction machine; 9. Rope drive assembly; 91. Drive rope; 92. Rope stationary pulley; 93. Electric traction machine. Detailed Implementation

[0047] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0048] This application discloses an oil-immersed high-voltage transformer hoisting device.

[0049] Example 1

[0050] Reference Figure 1 A single utility pole 1 is installed on the ground, and a crossarm 11 for supporting the transformer 10 is installed on the single utility pole 1.

[0051] Reference Figure 1 and Figure 2 The transformer hoisting device includes two support frames 2 installed above the crossarm 11. The two support frames 2 are arranged in parallel in the horizontal direction. The length direction of the two support frames 2 is perpendicular to the length direction of the utility pole 1. A main clamp seat 3 is provided between the two support frames 2 and is detachably connected to the utility pole 1 through the main clamp seat 3.

[0052] The main clamp seat 3 includes a single clamp 31 wrapped around the side wall of the utility pole 1 and a connecting piece 32 welded between the single clamp 31 and the support frame 2. The two single clamps 31 of the two support frames 2 are fixed to the utility pole 1 by fasteners, so as to realize the installation of the support frame 2 on the utility pole 1.

[0053] Reference Figure 2 and Figure 3 The upper and lower sides of the support frame 2 are connected. The top side of the support frame 2 is slidably connected to the lifting seat 4 along the length direction. The bottom side of the lifting seat 4 is fixed with a sliding block 41. The width of the sliding block 41 is smaller than the width of the lifting seat 4. The side wall of the sliding block 41 is slidably connected to the inner wall of the support frame 2. The upper and lower sides of the lifting seat 4 and the sliding block 41 are connected and communicate with the inner cavity of the support frame 2. Roller sets 42 are installed on both sides of the lifting seat 4 along the length direction. The roller sets 42 abut against the top side of the support frame 2. The roller sets 42 are used to reduce the sliding friction between the lifting seat 4 and the support frame 2 and improve the sliding efficiency of the lifting seat 4.

[0054] Reference Figure 1 and Figure 3 The lifting seat 4 is equipped with a pulley block 5. The top side of the support frame 2 away from the utility pole 1 is fixed with a mounting plate 6. A transmission component 7 is slidably inserted in the mounting plate 6. One end of the transmission component 7 is connected to the pulley block 5. The other end of the transmission component 7 is equipped with a locking component 8, which can be locked and unlocked. A lifting rope 511 is provided on the pulley block 5. A hook 512 is installed at the bottom end of the lifting rope 511. The transformer 10 is fixed by the hook 512.

[0055] In this embodiment, the transmission component 7 is connected to the hoisting rope 511 and the transmission component 7 is identical to the hoisting rope 511. The pulley block 5 is set as the first hoisting wheel 51, which is rotatably connected to the lifting seat 4. The transmission component 7 and the hoisting rope 511 pass over the first hoisting wheel 51 and then descend vertically. The locking assembly 8 includes a locking transmission wheel 81 and a locking traction machine 82. The locking transmission wheel 81 is rotatably connected to the end of the support frame 2 away from the utility pole 1. The transmission component 7 passes over the locking transmission wheel 81 and then descends vertically. The transmission component 7 is connected to the output end of the locking traction machine 82. The locking traction machine 82 is installed on the ground and powered by a vehicle-mounted battery.

[0056] Reference Figure 1 The lifting seat 4 is provided with a rope drive assembly 9 at the end away from the transmission component 7 for driving the lifting seat 4 to move. The rope drive assembly 9 includes a drive rope 91, a rope sheave 92 and an electric traction machine 93. One end of the drive rope 91 is connected to the lifting seat 4, the rope sheave 92 is rotatably connected to the end of the support frame 2, the electric traction machine 93 is installed on the ground, and the other end of the drive rope 91 passes around the rope sheave 92 and is connected to the output end of the electric traction machine 93.

[0057] The transmission components 7 on the two support frames 2 can be pulled by the same locking traction machine 82, and the drive ropes 91 on the two support frames 2 can also be pulled by the same electric traction machine 93, thereby improving the synchronization during the hoisting of the transformer 10.

[0058] Reference Figure 1 and Figure 4 A reinforcing rod 61 is connected between the mounting plate 6 and the utility pole 1. The reinforcing rod 61 is inclined upwards, and one end of the reinforcing rod 61 is connected to a first fixing plate 62. The first fixing plate 62 is in contact with the side of the mounting plate 6 and the two are connected by bolts and nuts. The end of the reinforcing rod 61 away from the mounting plate 6 is connected to a second fixing plate 63. A secondary clamp seat is provided between the second fixing plate 63 and the utility pole 1. The secondary clamp seat includes an arc-shaped clamp part 64 and two fastening parts 65 located at both ends of the clamp part 64. The side of the second fixing plate 63 is in contact with the side of the fastening parts 65, and the second fixing plate 63 is connected to the two fastening parts 65 by bolts and nuts. The reinforcing rod 61 can improve the load-bearing capacity of the support frame 2 and ensure the stability during the hoisting of the transformer 10.

[0059] The implementation principle of the oil-immersed high-voltage transformer hoisting device in this application embodiment is as follows: the hoisting rope 511 fixes the transformer 10 through the hook 512. At this time, the locking traction machine 82 locks the transmission component 7, the electric traction machine 93 winds up the drive rope 91, and the lifting seat 4 moves towards the direction close to the utility pole 1. At this time, the transformer 10 tilts upward. When the transformer 10 moves to a position above the crossarm 11, the electric traction machine 93 locks the drive rope 91, and the locking traction machine 82 slowly releases the transmission component 7, so that the transformer 10 slowly descends onto the crossarm 11, realizing the hoisting of the transformer 10. This hoisting device facilitates the installation of the transformer 10 on a single utility pole by construction personnel, which helps to reduce hoisting costs and improve the hoisting efficiency of the transformer 10.

[0060] Example 2

[0061] Reference Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 lies in the structure of the pulley block 5. In this embodiment, the pulley block 5 includes a transmission sprocket 52 and a second lifting wheel 53 coaxially rotatably connected in the lifting seat 4. The transmission component 7 is a transmission chain. One end of the transmission chain passes around the transmission sprocket 52 and is connected to a slider 54. The slider 54 slides horizontally and is connected to the inner wall of the support frame 2. The other end of the transmission chain passes around the locking transmission wheel 81. At this time, the locking transmission wheel 81 is correspondingly set as a sprocket, and the locking traction machine 82 is correspondingly set as a chain winding device. The chain winding device is used to wind up the transmission chain.

[0062] Reference Figure 1 and Figure 5 One end of the hoisting rope 511 is wound around the second hoisting wheel 53. The diameter of the second hoisting wheel 53 is larger than the diameter of the transmission sprocket 52. The locking traction machine 82 locks the transmission component 7, and the driving rope 91 pulls the lifting seat 4 towards the direction of the utility pole 1. The transmission sprocket 52 moves towards the direction of the utility pole 1 in sync. The transmission sprocket 52 rotates during the movement, driving the slider 54 to move towards the direction of the utility pole 1. At the same time, since the transmission sprocket 52 and the second hoisting wheel 53 are coaxial, the second hoisting wheel 53 is driven to wind up, and the transformer 10 is lifted by the second hoisting wheel 53.

[0063] Compared with Embodiment 1, the advantage of this embodiment is that by changing the structure of the pulley block 5, the lifting range of the transformer 10 is changed, so that the transformer 10 can be lifted quickly when the lifting seat 4 is pulled. The length of the support frame 2 can be shortened during the design to make it more convenient to carry the support frame 2.

[0064] Example 3

[0065] Reference Figure 1 and Figure 7The difference between this embodiment and embodiment 1 is that the number of pulley groups 5 is different. In this embodiment, there are two pulley groups 5. One pulley group 5 is set at one end of the lifting seat 4, and the other pulley group 5 is set at the other end of the lifting seat 4. A transmission component 7 and a lifting rope 511 are connected to one pulley group 5, and another transmission component 7 and another lifting rope 511 are connected to the other pulley group 5. The two transmission components 7 are arranged in parallel and staggered on the same plane. The two transmission components 7 pass around the locking transmission wheel 81 and are wound by the same locking traction machine 82 to improve the synchronicity of the winding of the two transmission components 7.

[0066] Compared with Embodiment 1, the advantage of this embodiment is that two lifting ropes 511 are provided on the same support frame 2. The two lifting ropes 511 can be raised and lowered synchronously. Thus, the four lifting ropes 511 of the two support frames 2 can suspend the four points of the transformer 10. These four points can maintain synchronous raising and lowering, which can effectively reduce the phenomenon of transformer 10 being damaged due to excessive tilt during the hoisting process and improve the stability of transformer 10 during hoisting.

[0067] This application also discloses a hoisting construction process for an oil-immersed high-voltage transformer, including the following steps:

[0068] S1. According to the standard installation height of transformer 10, the crossarm 11 is horizontally installed on the utility pole 1. The middle part of the crossarm 11 can be fixed on the utility pole 1. At this time, transformer 10 can be installed at one end of the crossarm 11 and distribution box can be installed at the other end.

[0069] S2. Assemble the pulley block 5 and the lifting seat 4 on the ground. Then, install the lifting seat 4 on the support frame 2. Connect the transmission component 7 and the hoisting rope 511 to the pulley block 5. Connect the drive rope 91 to the lifting seat 4. The transmission component 7 and the drive rope 91 extend to the ground respectively.

[0070] S3. Two support frames 2 are horizontally installed on the utility pole 1 above the crossarm 11 via the main clamp 3, with the extension direction of the support frames 2 being consistent with the extension direction of the crossarm 11.

[0071] S4. Connect the transmission component 7 and the locking traction machine 82 on the ground, connect the drive rope 91 and the electric traction machine 93, put the oil-immersed high-voltage transformer 10 in place, and fix the hoisting rope 511 to the oil-immersed high-voltage transformer 10.

[0072] S5. Lock the transmission component 7 by locking component 8, and pull the lifting seat 4 along the direction close to the utility pole 1 by rope drive component 9, so that the transformer 10 moves upward at an angle.

[0073] S6. After the transformer 10 moves to a predetermined position above the crossarm 11, the control rope drive assembly 9 is locked and the locking assembly 8 is released, causing the transformer 10 to slowly descend onto the crossarm 11.

[0074] S7. Fix the transformer 10 and the crossarm 11 to complete the hoisting of the transformer 10.

[0075] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hoisting device for an oil-immersed high-voltage transformer, characterized in that: It includes two support frames (2) for installation on the same circumferential surface of the utility pole (1). The length direction of the two support frames (2) is perpendicular to the length direction of the utility pole (1). The two support frames (2) are slidably connected to a lifting seat (4) along the length direction. One end of the lifting seat (4) is provided with a rope drive assembly (9) for driving the lifting seat (4) to slide. The end of the support frame (2) away from the utility pole (1) is provided with a transmission component (7). The lifting seat (4) is provided with a pulley group (5). One end of the transmission component (7) is connected to the pulley group (5) for transmission. The side of the support frame (2) away from the utility pole (1) is provided with a locking assembly (8) for locking the transmission component (7). The pulley group (5) is provided with a hoisting rope (511) for hoisting the transformer (10). The locking assembly (8) includes a locking drive wheel (81) and a locking traction machine (82). The locking drive wheel (81) is rotatably connected to the end of the support frame (2) away from the utility pole (1). The transmission component (7) passes around the locking drive wheel (81) and is connected to the locking traction machine (82). The rope drive assembly (9) includes a drive rope (91), a rope sheave (92), and an electric traction machine (93). One end of the drive rope (91) is connected to the side of the lifting seat (4). The rope sheave (92) is rotatably connected to the end of the support frame (2) away from the lifting seat (4). The other end of the drive rope (91) passes around the rope sheave (92) and is connected to the electric traction machine (93). The locking assembly (8) and the rope drive assembly (9) are used together to adjust the height position of the transformer (10) and the horizontal position of the transformer (10) along the extension direction of the crossarm (11); The locking traction machine (82) and the electric traction machine (93) are located on both sides of the utility pole (1) so that the utility pole (1) is subjected to force on both sides during hoisting. The locking traction machine (82) and the electric traction machine (93) are activated alternately.

2. The oil-immersed high-voltage transformer hoisting device according to claim 1, characterized in that: The pulley block (5) includes a first lifting wheel (51) rotatably connected to the lifting seat (4), and the transmission component (7) is connected to the lifting rope (511). Both the transmission component (7) and the lifting rope (511) are connected to the first lifting wheel (51) in a transmission manner.

3. The oil-immersed high-voltage transformer hoisting device according to claim 1, characterized in that: The pulley block (5) includes a transmission sprocket (52) and a second lifting wheel (53) coaxially rotatably connected in the lifting seat (4). The transmission component (7) is configured as a transmission chain, which is connected to the transmission sprocket (52) in a transmission connection. One end of the transmission chain is connected to a slider that is slidably connected to the support frame (2). The lifting rope (511) is wound around the second lifting wheel (53). The diameter of the transmission sprocket (52) is smaller than the diameter of the second lifting wheel (53).

4. The oil-immersed high-voltage transformer hoisting device according to claim 1, characterized in that: Two sets of rollers are set on the same support frame (2), and two sets of transmission components (7) and suspension ropes (511) are set accordingly.

5. The oil-immersed high-voltage transformer hoisting device according to claim 1, characterized in that: The bottom side of the lifting seat (4) is fixed with a sliding block (41) that slides through the inner wall of the support frame (2), and a roller assembly (42) is connected between the peripheral side of the lifting seat (4) and the top side of the support frame (2).

6. The oil-immersed high-voltage transformer hoisting device according to claim 1, characterized in that: The support frame (2) is connected to the utility pole (1) by a main clamp seat (3). The main clamp seat (3) includes a single clamp (31) for fixing to the utility pole (1) and a connecting piece (32) connecting the single clamp (31) to the support frame (2). The single clamps (31) between the two support frames (2) are fixed to each other.

7. The oil-immersed high-voltage transformer hoisting device according to claim 1, characterized in that: A reinforcing rod (61) is connected between the end of the support frame (2) and the utility pole (1).

8. A hoisting construction process for an oil-immersed high-voltage transformer, applied to the hoisting device for an oil-immersed high-voltage transformer as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Install the crossarm (11) horizontally on the utility pole (1); S2. Assemble the pulley block (5) and the lifting seat (4) on the ground, install the lifting seat (4) on the support frame (2), and connect the rope drive assembly (9), transmission component (7), locking assembly (8) and hoisting rope (511) to the support frame (2) in sequence. S3. The support frame (2) is horizontally installed on the utility pole (1) above the crossarm (11), and the extension direction of the support frame (2) is consistent with the extension direction of the crossarm (11). S4. The oil-immersed high-voltage transformer (10) is in place, and the lifting rope (511) is fixed to the oil-immersed high-voltage transformer (10); S5. Lock the transmission component (7) by locking component (8), and pull the lifting seat (4) along the direction close to the utility pole (1) by rope drive component (9), and the transformer (10) tilts upward. S6. After the transformer (10) moves to a predetermined position above the crossarm (11), the rope drive assembly (9) locks and the locking assembly (8) releases, causing the transformer (10) to descend onto the crossarm (11); S7. Fix the transformer (10) and crossarm (11) to complete the hoisting of the transformer (10).

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