Two-roll 220kV transformer suitable for 5000m altitude

Abstract

The invention discloses a two-roll 220kV transformer suitable for the altitude of 5000 meters, and relates to the field of transformers, the two-roll 220kV transformer comprises an adjusting mechanism and an oil conservator installed on the top of the adjusting mechanism, a lifting mechanism is installed on one side of the adjusting mechanism, and a transformer body is installed on the top of the lifting mechanism. The height of the sliding frame and the height of the lifting frame are adjusted through driving of an air cylinder so as to meet the requirements of different altitudes and site positions, height locking is achieved through clamping connection of a locking block and a control box, the stability and safety of the adjusting process are ensured, a driving motor drives a rotating rod to rotate, and an eccentric wheel and a center groove are matched to apply counter-acting force to control lifting of the sliding frame; when the inclined face of the locking block makes contact with the control box, the lifting direction of the lifting frame and the sliding frame is determined, the locking block is pushed to make contact with the supporting column through the elastic effect of the mounting groove, the precise locking height is ensured, the locking block and the sliding rod move together through sliding of the sliding rod in the mounting groove, and precise adjustment of equipment is ensured through coordination and cooperation of all components.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, specifically to a two-winding 220kV transformer suitable for altitudes of 5000 meters. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. Its main components are the primary coil, the secondary coil, and the iron core (magnetic core). Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer).

[0003] However, in existing technologies, traditional 220kV transformers often cannot be precisely adjusted according to actual altitude or environmental changes. This results in the equipment not reaching the ideal installation height after installation, which in turn affects the transformer's operating performance. Especially in high-altitude or complex terrain areas, traditional methods often cannot cope with altitude changes caused by factors such as air pressure and temperature, leading to the equipment's inability to operate stably for a long time. Secondly, the traditional adjustment process is cumbersome and unstable. Most existing technologies rely on manual adjustment or simple mechanical operation, which not only requires a high level of operational skills but is also easily affected by external factors such as temperature changes and operational errors, resulting in inaccurate adjustment or equipment damage. Summary of the Invention

[0004] The purpose of this invention is to provide a two-winding 220kV transformer suitable for altitudes of 5000 meters, in order to solve the problem mentioned in the background art that traditional 220kV transformers often cannot be precisely adjusted according to actual altitude or environmental changes, which leads to the equipment not being able to reach the ideal installation height after installation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a two-winding 220kV transformer suitable for altitudes of 5000 meters, comprising an adjustment mechanism and an oil conservator mounted on its top, a lifting mechanism mounted on one side of the adjustment mechanism, and a transformer body mounted on the top of the lifting mechanism; The lifting mechanism includes a base plate and support columns fixedly connected to both sides of its top. A control box is installed on the side wall of one of the support columns. Two cylinders are fixedly connected to the top of the base plate, and limit frames are installed at the top of the cylinders. A lifting frame is set above the cylinders, and sliding sleeves are fixedly connected to both ends of the lifting frame. The sliding sleeves are fitted onto the outer surface of the support column. A sliding frame is set below the lifting frame, and mounting grooves are opened at both ends of the sliding frame. A sliding rod is slidably connected inside the mounting groove, and a locking block is fixedly connected to one end of the sliding rod. A rotating rod is rotatably connected to the middle of the sliding frame, and an eccentric wheel is fixedly connected to the top of the rotating rod. A central groove is fixedly connected to the middle of the bottom end of the lifting frame, and the eccentric wheel is located inside the central groove. Multiple racks are fixedly connected to the side wall of the support column. The locking block engages with the control box. A positioning mechanism is installed inside the lifting frame. A spring is installed inside the mounting groove, and the spring abuts against the sliding rod. A drive motor fixedly connected to the rotating rod is installed at the center of the bottom of the sliding frame.

[0006] Preferably, the bottom of the sliding frame is provided with a first sliding groove, and a slide rail is slidably connected to the inner side of the first sliding groove, and the slide rail is fixedly connected to the limiting frame.

[0007] Preferably, the positioning mechanism includes a mounting frame fixedly connected to the top of the inner cavity of the lifting frame, a knob rotatably connected to the side wall of the mounting frame, and a drive bevel gear fixedly connected to one end of the knob.

[0008] Preferably, driven bevel gears are meshed on both sides of the driving bevel gear, and a threaded rod is fixedly connected to the shaft end of the driven bevel gear.

[0009] Preferably, one end of the threaded rod is rotatably connected to the side wall of the sliding sleeve, and a clamp is threadedly connected to the outer surface of the threaded rod.

[0010] Preferably, the transformer body is snapped into the center of the top of the lifting frame, and limit grooves are opened on both sides of the top of the lifting frame, with the limit grooves slidingly connected to the clamping plate.

[0011] Preferably, the inner wall of the sliding frame is provided with a second sliding groove, and the central groove is slidably connected to the second sliding groove.

[0012] Preferably, the adjustment mechanism includes a support plate, an mounting plate fixedly connected to the top center of the support plate, a top plate fixedly installed at the bottom of the oil tank, and fixed brackets fixedly connected to both sides of the top of the support plate.

[0013] Preferably, a limit rod is slidably connected to the inner side of the fixed frame, the top of the limit rod is fixedly connected to the bottom of the top plate, and a scissor lift is rotatably connected to the top of the mounting plate, with a roller provided at one end of the scissor lift.

[0014] Preferably, a connecting rod is fixedly connected to the inner side of the scissor lift, and a hydraulic cylinder is rotatably connected to the bottom end of the scissor lift, with the output end of the hydraulic cylinder rotatably connected to the connecting rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the height of the sliding frame and the lifting frame is adjusted by a cylinder to adapt to different altitudes and site locations. The locking block engages with the control box to lock the height, ensuring the stability and safety of the adjustment process. The drive motor drives the rotating rod to rotate, and the eccentric wheel and the center groove work together to apply a reaction force, controlling the lifting and lowering of the sliding frame. When the inclined surface of the locking block contacts the control box, it determines the lifting and lowering direction of the lifting frame and the sliding frame. The elasticity of the mounting groove pushes the locking block to contact the support column, ensuring precise height locking. The sliding rod slides in the mounting groove, which also causes the locking block and the sliding rod to move together. The coordinated cooperation of all components ensures the precise adjustment of the equipment and improves the accuracy and reliability of the installation process. 2. In this invention, the relative sliding of the sliding frame and the lifting frame ensures that the sliding frame is unrestricted during the lifting process, while maintaining precise control of the cylinder drive, ensuring the smooth lifting of the equipment. The synergistic effect between the sliding frame and the central groove during the sliding process further enhances the stability of the sliding. The rotation of the knob drives the active bevel gear to rotate, which in turn drives the driven bevel gear and the threaded rod to rotate. The clamping plate slides in the limiting groove to achieve clamping and positioning of the transformer body, thereby ensuring the stability of the transformer during the installation process. This design can not only adapt to different altitudes and terrain conditions and provide flexible installation adjustments, but also ensure the firmness and long-term stability of the installation. 3. In this invention, when adjusting the position of the oil tank, the hydraulic cylinder drives the connecting rod to move, thereby raising and lowering the scissor lift and controlling the raising and lowering of the top plate. The height of the oil tank is adjusted to meet the needs of different altitude conditions. During the raising and lowering process, the limit rod slides relative to the fixed frame to ensure the stability of the top plate raising and lowering and avoid shaking. The rollers on the scissor lift are rotatably connected to the top plate and the mounting plate to transmit the driving force of the motion and ensure smooth raising and lowering. The sliding fit design reduces friction and improves the smoothness and service life of the system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a two-coil 220kV transformer suitable for altitudes of 5000 meters according to the present invention; Figure 2 This is a front view schematic diagram of a two-coil 220kV transformer suitable for an altitude of 5000 meters according to the present invention; Figure 3 This is a partial structural schematic diagram of a two-roll 220kV transformer suitable for altitudes of 5000 meters according to the present invention; Figure 4 This is a schematic diagram of a lifting frame structure for a two-coil 220kV transformer suitable for an altitude of 5000 meters according to the present invention; Figure 5 This is a partial structural diagram of a lifting mechanism in a two-coil 220kV transformer suitable for altitudes of 5000 meters, according to the present invention. Figure 6This is a schematic diagram of a sliding frame structure for a two-coil 220kV transformer suitable for an altitude of 5000 meters according to the present invention; Figure 7 This is a schematic diagram of the regulating mechanism in a two-coil 220kV transformer suitable for altitudes of 5000 meters, according to the present invention.

[0017] In the diagram: 1. Oil tank; 2. Lifting mechanism; 21. Base plate; 211. Support column; 22. Cylinder; 221. Limiting frame; 222. Slide rail; 23. Rack; 24. Lifting frame; 241. Limiting groove; 242. Sliding sleeve; 243. Center groove; 25. Spring; 26. Sliding frame; 261. Mounting groove; 262. First slide groove; 263. Second slide groove; 27. Rotating rod; 28. Eccentric wheel; 29. ​​Lock 1. Fixed block; 2. Sliding rod; 3. Control box; 4. Transformer body; 5. Adjustment mechanism; 51. Top plate; 52. Support plate; 53. Limiting rod; 54. Scissor lift; 55. Hydraulic cylinder; 56. Connecting rod; 57. Mounting plate; 58. Fixing frame; 6. Positioning mechanism; 61. Clamping plate; 62. Threaded rod; 63. Mounting frame; 64. Knob; 65. Driven bevel gear; 66. Driven bevel gear; 7. Drive motor. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Refer to Figures 1-6 As shown: A two-roll 220kV transformer suitable for altitude of 5000 meters includes an regulating mechanism 5 and an oil conservator 1 installed on its top. A lifting mechanism 2 is installed on one side of the regulating mechanism 5, and a transformer body 4 is installed on the top of the lifting mechanism 2. The lifting mechanism 2 includes a base plate 21 and support columns 211 fixedly connected to both sides of its top. A control box 3 is installed on the side wall of one of the support columns 211. Two cylinders 22 are fixedly connected to the top of the base plate 21. Limit frames 221 are installed at the top of the cylinders 22. A lifting frame 24 is provided above the cylinders 22. Sliding sleeves 242 are fixedly connected to both ends of the lifting frame 24. The sliding sleeves 242 are sleeved on the outer surface of the support column 211. A sliding frame 26 is provided below the lifting frame 24. Mounting grooves 261 are provided at both ends of the sliding frame 26. Sliding rods 291 are slidably connected inside the mounting grooves 261. A locking block 29 is fixedly connected to one end of the sliding frame 26. A rotating rod 27 is rotatably connected to the middle of the sliding frame 26. An eccentric wheel 28 is fixedly connected to the top of the rotating rod 27. A central groove 243 is fixedly connected to the middle of the bottom end of the lifting frame 24. The eccentric wheel 28 is located inside the central groove 243. Multiple racks 23 are fixedly connected to the side wall of the support column 211. The locking block 29 is engaged with the control box 3. A positioning mechanism 6 is installed inside the lifting frame 24. A spring 25 is provided in the inner cavity of the mounting groove 261. The spring 25 abuts against the sliding rod 291. A drive motor 7, which is fixedly connected to the rotating rod 27, is installed at the center of the bottom of the sliding frame 26.

[0020] The bottom of the sliding frame 26 is provided with a first sliding groove 262, and a slide rail 222 is slidably connected to the inner side of the first sliding groove 262. The slide rail 222 is fixedly connected to the limit frame 221.

[0021] In this embodiment, during transformer installation, the height of the transformer body 4 first needs to be adjusted according to the actual altitude. This adjustment process not only considers the altitude but also requires real-time adjustments based on the specific conditions of the installation location. To achieve this precise adjustment, the system is equipped with a cylinder 22, whose driving action effectively controls the height change between the sliding frame 26 and the lifting frame 24. During this process, through the precise driving of the cylinder 22, the heights of the sliding frame 26 and the lifting frame 24 can be flexibly adjusted to adapt to different installation requirements.

[0022] To ensure the stability and safety of all components during adjustment, the system is designed with a locking block 29, the middle of which can be firmly engaged with the control box 3 to achieve height locking. When the installation height needs to be adjusted, the drive motor 7 drives the rotating rod 27 to rotate, thereby driving the eccentric wheel 28 to rotate. During the rotation of the eccentric wheel 28, through its cooperation with the interior of the central groove 243, a reaction force can be applied to the sliding frame 26, causing it to slide at the bottom of the lifting frame 24. This reaction force can precisely control the lifting and lowering of the sliding frame 26, thereby achieving the adjustment of the installation height.

[0023] During the adjustment process, the contact between the inclined surface of one end of the locking block 29 and the control box 3 plays a crucial role. When the locking block 29 contacts the control box 3, the lifting frame 24 and the sliding frame 26 will rise or fall according to the tilt angle of the locking block 29. Specifically, the design of the inclined surfaces at both ends of the locking block 29 and their contact with the control box 3 effectively determines the lifting direction of the lifting frame 24 and the sliding frame 26. This ensures the smooth lifting of the lifting frame 24 and the sliding frame 26, avoiding potential misoperation or inaccurate height measurement.

[0024] Furthermore, the elasticity of the mounting groove 261 plays a crucial role during the movement of the locking block 29. When pushed by the elastic force, the locking block 29 contacts the side wall of the support column 211, thus achieving precise locking of the transformer body 4's height. It is worth noting that the sliding of the sliding rod 291 within the mounting groove 261 also allows the locking block 29 to be subjected to the force of the control box 3, thereby pushing the locking block 29 and the sliding rod 291 to move together. This design effectively ensures the coordination and stability of the components during installation, further improving the accuracy and reliability of the entire equipment adjustment process.

[0025] Example 2: Figure 4 As shown, the positioning mechanism 6 includes a mounting bracket 63 fixedly connected to the top of the inner cavity of the lifting frame 24. A knob 64 is rotatably connected to the side wall of the mounting bracket 63, and a driving bevel gear 66 is fixedly connected to one end of the knob 64. Driven bevel gears 65 are meshed on both sides of the driving bevel gear 66, and a threaded rod 62 is fixedly connected to the shaft end of the driven bevel gear 65. One end of the threaded rod 62 is rotatably connected to the side wall of the sliding sleeve 242, and a clamping plate 61 is threadedly connected to the outer surface of the threaded rod 62. The transformer body 4 is snapped into the center of the top of the lifting frame 24. Limiting grooves 241 are opened on both sides of the top of the lifting frame 24, and the limiting grooves 241 are slidably connected to the clamping plates 61.

[0026] In this embodiment, when the sliding frame 26 slides along the bottom of the lifting frame 24, relative sliding will occur between the second slide groove 263 and the slide rail 222. This design ensures that the sliding frame 26 is not subject to any mechanical restrictions during the lifting process and can slide freely, while maintaining effective control of the cylinder 22 over the lifting process of the sliding frame 26 and the lifting frame 24. Through this mechanism, the cylinder 22 can precisely drive the up and down movement of the sliding frame 26 and the lifting frame 24, ensuring stable and reliable operation of the entire lifting system.

[0027] Furthermore, during the sliding process, the second sliding groove 263 of the sliding frame 26 will slide relative to the central groove 243 on the lifting frame 24. This relative sliding not only reduces the friction between the sliding frame 26 and the lifting frame 24, but also forms an effective synergistic effect between the second sliding groove 263 and the central groove 243. This synergistic sliding relationship effectively ensures that the sliding frame 26 maintains a smooth and stable motion trajectory during the lifting process, avoiding uneven sliding or instability caused by mechanical asymmetry or excessive resistance.

[0028] During the installation of the transformer body 4, the rotation of knob 64 drives the active bevel gear 66 to rotate via mechanical transmission. The rotation of the active bevel gear 66 drives the two driven bevel gears 65 to rotate through meshing, thereby controlling the rotation of the threaded rod 62. The rotation of the threaded rod 62 causes the clamping plate 61 to slide within the limiting groove 241 on the lifting frame 24, ultimately firmly clamping and positioning the transformer body 4 in the correct position. This process not only ensures the stability of the transformer body 4 during installation but also allows for flexible adjustment of the installation angle and position by adapting to different altitudes and terrain conditions.

[0029] Furthermore, this design not only ensures a high degree of adjustability for the installation of the transformer body 4, but also maintains stable installation performance under harsh or changing environmental conditions. The precise fit between the threaded rod 62 and the clamping plate 61, as well as the design of the limiting groove 241, guarantee sufficient clamping force during adjustment, thereby preventing the transformer body 4 from shifting or loosening due to vibration or external forces, and ensuring the stability and safety of the transformer body 4 during long-term use.

[0030] Example 3: According to Figure 7 As shown, the adjusting mechanism 5 includes a support plate 52, with a mounting plate 57 fixedly connected to the top center of the support plate 52. A top plate 51 is fixedly installed at the bottom of the oil tank 1. Fixing brackets 58 are fixedly connected to both sides of the top of the support plate 52. A limit rod 53 is slidably connected to the inner side of the fixing bracket 58. The top of the limit rod 53 is fixedly connected to the bottom of the top plate 51. A scissor lift 54 ​​is rotatably connected to the top of the mounting plate 57, and a roller is provided at one end of the scissor lift 54. A connecting rod 56 is fixedly connected to the inner side of the scissor lift 54. A hydraulic cylinder 55 is rotatably connected to the bottom end of the scissor lift 54, and the output end of the hydraulic cylinder 55 is rotatably connected to the connecting rod 56.

[0031] In this embodiment, the position of the oil tank 1 can be precisely adjusted according to specific needs. The hydraulic cylinder 55 serves as the drive source, driving the connecting rod 56 to move linearly. The movement of the connecting rod 56 directly affects the movement of the scissor lift 54. When the connecting rod 56 moves, the scissor lift 54 ​​begins to move up and down along a specific track. The rollers on the scissor lift 54, through a rotatable connection with the top plate 51 and the mounting plate 57, effectively transmit the driving force, enabling the top plate 51 to achieve a lifting function as needed, thereby adjusting the position and height of the oil tank 1.

[0032] During adjustment, the height control of the top plate 51 can not only adapt to the needs of different altitude conditions, but also effectively cope with the special effects that may be brought about by the high-altitude environment. In order to ensure the stability of the top plate 51 during the lifting process, especially the vibration or tilt that may occur during the lifting process, a sliding fit between the limit rod 53 and the fixed frame 58 is added to the design. When the top plate 51 is lifted, the limit rod 53 slides relative to the fixed frame 58, which not only limits the maximum stroke of the top plate 51 and prevents overtravel operation, but also provides additional stability to ensure that the top plate 51 does not shake during the lifting process, and prevents equipment damage or reduced working accuracy due to instability.

[0033] The usage and working principle of this device are as follows: During installation, the installation height of the transformer body 4 needs to be adjusted according to the altitude, and this adjustment can be made at the installation location. During this process, the cylinder 22 drives the sliding frame 26 and the lifting frame 24 to achieve height adjustment, and the height is locked by engaging with the control box 3 through the middle section of the locking block 29. During adjustment, the drive motor 7 drives the rotating rod 27 and the eccentric wheel 28 to rotate. When the eccentric wheel 28 rotates in the central groove 243, it applies a reaction force to the sliding frame 26, causing the sliding frame 26 to slide along the bottom of the lifting frame 24. When the inclined surface at one end of the locking block 29 contacts the control box 3, the lifting frame 24 and the sliding frame 26 can achieve lifting and lowering actions, and the different directions of the inclined surfaces at both ends of the locking block 29 can control its rise or fall.

[0034] During the movement of the locking block 29, the elastic element in the mounting groove 261 pushes the locking block 29, keeping it in contact with the side wall of the support column 211. At the same time, the sliding rod 291 slides in the mounting groove 261, causing the locking block 29 to perform corresponding actions under the action of the control box 3.

[0035] When the sliding frame 26 slides at the bottom of the lifting frame 24, its second sliding groove 263 slides relative to the slide rail 222, which not only avoids excessive constraint on the sliding frame 26, but also ensures that the cylinder 22 can still effectively control the overall lifting. In addition, the relative sliding between the second sliding groove 263 and the central groove 243 further ensures the smooth movement of the sliding frame 26.

[0036] When installing the transformer body 4, rotating the knob 64 drives the driving bevel gear 66 to rotate, which in turn drives the two driven bevel gears 65 and the threaded rod 62 to rotate through meshing. As the threaded rod 62 rotates, the clamping plate 61 slides along the limiting groove 241, thereby clamping and positioning the transformer body 4 to ensure a firm and stable installation. This structure not only adapts to installation requirements under different altitudes and terrain conditions but also improves the reliability and stability of the installation.

[0037] When adjusting the position of the oil tank 1, the hydraulic cylinder 55 can be activated as needed to drive the connecting rod 56, thereby raising and lowering the scissor lift 54. The rollers on the scissor lift 54 ​​are rotatably connected to the top plate 51 and the mounting plate 57, allowing the top plate 51 to adjust the height of the oil tank 1 to cope with the effects of high-altitude environments. During the raising and lowering process, the limit rod 53 slides relative to the fixed frame 58 to ensure smooth raising and lowering of the top plate 51 and prevent swaying.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A two-coil 220kV transformer suitable for altitudes of 5000 meters, comprising an regulating mechanism (5) and an oil conservator (1) mounted on its top, characterized in that: A lifting mechanism (2) is installed on one side of the adjusting mechanism (5), and a transformer body (4) is installed on the top of the lifting mechanism (2). The lifting mechanism (2) includes a base plate (21) and support columns (211) fixedly connected to both sides of its top. A control box (3) is installed on the side wall of one of the support columns (211). Two cylinders (22) are fixedly connected to the top of the base plate (21). A limit frame (221) is installed at the top of the cylinders (22). A lifting frame (24) is provided above the cylinders (22). Sliding sleeves (242) are fixedly connected to both ends of the lifting frame (24). The sliding sleeves (242) are sleeved on the outer surface of the support column (211). A sliding frame (26) is provided below the lifting frame (24). Mounting grooves (261) are provided at both ends of the sliding frame (261). A sliding rod (291) is slidably connected to the inner side of the mounting groove (261). 91) A locking block (29) is fixedly connected to one end. A rotating rod (27) is rotatably connected to the middle of the sliding frame (26). An eccentric wheel (28) is fixedly connected to the top of the rotating rod (27). A central groove (243) is fixedly connected to the middle of the bottom end of the lifting frame (24). The eccentric wheel (28) is located inside the central groove (243). Multiple racks (23) are fixedly connected to the side wall of the support column (211). The locking block (29) is engaged with the control box (3). A positioning mechanism (6) is installed inside the lifting frame (24). A spring (25) is provided in the inner cavity of the mounting groove (261). The spring (25) abuts against the sliding rod (291). A drive motor (7) is fixedly connected to the rotating rod (27) and installed at the center of the bottom of the sliding frame (26).

2. A two-winding 220kV transformer suitable for an altitude of 5000 meters according to claim 1, characterized in that: The sliding frame (26) has a first sliding groove (262) at the bottom, and a slide rail (222) is slidably connected to the inner side of the first sliding groove (262). The slide rail (222) is fixedly connected to the limiting frame (221).

3. A two-winding 220kV transformer suitable for an altitude of 5000 meters according to claim 1, characterized in that: The positioning mechanism (6) includes a mounting bracket (63) fixedly connected to the top of the inner cavity of the lifting frame (24). A knob (64) is rotatably connected to the side wall of the mounting bracket (63), and a drive bevel gear (66) is fixedly connected to one end of the knob (64).

4. A two-winding 220kV transformer suitable for an altitude of 5000 meters according to claim 3, characterized in that: Both sides of the driving bevel gear (66) are meshed with driven bevel gears (65), and the shaft end of the driven bevel gear (65) is fixedly connected with a threaded rod (62).

5. A two-winding 220kV transformer suitable for an altitude of 5000 meters according to claim 4, characterized in that: One end of the threaded rod (62) is rotatably connected to the side wall of the sliding sleeve (242), and a clamping plate (61) is threadedly connected to the outer surface of the threaded rod (62).

6. A two-winding 220kV transformer suitable for an altitude of 5000 meters according to claim 1, characterized in that: The transformer body (4) is snapped into the center of the top of the lifting frame (24). Limiting grooves (241) are opened on both sides of the top of the lifting frame (24). The limiting grooves (241) are slidably connected to the clamping plate (61).

7. A two-winding 220kV transformer suitable for an altitude of 5000 meters according to claim 1, characterized in that: The inner wall of the sliding frame (26) is provided with a second sliding groove (263), and the central groove (243) is slidably connected to the second sliding groove (263).

8. A two-winding 220kV transformer suitable for an altitude of 5000 meters according to claim 1, characterized in that: The adjustment mechanism (5) includes a support plate (52), an installation plate (57) is fixedly connected to the top center of the support plate (52), a top plate (51) is fixedly installed at the bottom of the oil tank (1), and a fixing frame (58) is fixedly connected to both sides of the top of the support plate (52).

9. A two-winding 220kV transformer suitable for an altitude of 5000 meters according to claim 8, characterized in that: The inner side of the fixed frame (58) is slidably connected to a limiting rod (53), the top of the limiting rod (53) is fixedly connected to the bottom of the top plate (51), and the top of the mounting plate (57) is rotatably connected to a scissor lift (54), and one end of the scissor lift (54) is provided with a roller.

10. A two-winding 220kV transformer suitable for an altitude of 5000 meters according to claim 9, characterized in that: A connecting rod (56) is fixedly connected to the inner side of the scissor lift (54), and a hydraulic cylinder (55) is rotatably connected to the bottom end of the scissor lift (54). The output end of the hydraulic cylinder (55) is rotatably connected to the connecting rod (56).

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