Transformer bushing testing device

Abstract

The invention provides a transformer bushing testing device, which relates to the technical field of power system testing and comprises a lifting plate and a positioning mechanism. The lifting plate is configured to ascend and descend in the vertical direction; the two positioning mechanisms are arranged in the vertical direction and comprise the movable positioning mechanism and the fixed positioning mechanism, the movable positioning mechanism is connected with the lifting plate, the movable positioning mechanism is configured to ascend and descend along with the lifting plate, and the distance between the movable positioning mechanism and the fixed positioning mechanism is adjustable; the positioning mechanism comprises a plurality of groups of positioning plates, the positioning plates can move in the horizontal direction, positioning grooves of different sizes are formed in the positioning plates respectively, and the positioning grooves of different sizes are used for vertically positioning transformer bushings of different voltage grades. The invention particularly provides a transformer bushing testing device capable of vertically positioning transformer bushings of different voltage classes.

Description

Technical Field

[0001] The invention relates to the technical field of power system testing, in particular to a transformer bushing testing device. Background Art

[0002] In power systems, transformer bushings are a crucial component of transformers, and their performance reliability directly impacts the safe and stable operation of the entire power system. During replacement, overhaul, and minor repairs, transformer bushings of varying voltage levels must undergo acceptance testing, routine testing, and diagnostic testing in accordance with relevant standards to ensure that their performance meets requirements. According to acceptance procedures, when conducting acceptance testing on transformer bushings of various voltage levels, the bushings must be placed vertically and insulated and sealed with transformer oil at the bottom. Transformer bushings of different voltage levels vary in size, requiring bushing test racks of varying specifications. However, existing test racks are relatively simple in design, and most are only suitable for one or a few specific transformer bushing sizes. They are difficult to adapt to bushings of other sizes, resulting in extremely poor adaptability. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a transformer bushing test device to at least partially solve the problems raised in the above background technology.

[0004] The present invention provides the following technical solution: A transformer bushing test device proposed in the present invention comprises: A lifting plate configured to be raised and lowered in a vertical direction; The positioning mechanism is provided with two groups in the vertical direction. The two groups of positioning mechanisms are respectively a movable positioning mechanism and a fixed positioning mechanism. The movable positioning mechanism is provided above the fixed positioning mechanism and is connected to the lifting plate. The movable positioning mechanism is configured to rise and fall with the lifting plate, and the vertical spacing between the movable positioning mechanism and the fixed positioning mechanism is adjustable; The positioning mechanism includes multiple groups of positioning plates, which are configured to be movable in the horizontal direction. Positioning grooves of different sizes are respectively provided on the multiple groups of positioning plates. The positioning grooves of different sizes are used to vertically position transformer bushings of different sizes.

[0005] Furthermore, the positioning mechanism also includes an installation box, a drive position adjustment component, a power component and a transmission component. The transmission component is provided with multiple groups corresponding to the mounting plate. The mounting plate is connected to the transmission component one by one. The power component is configured to rise and fall between the drive position adjustment component and the transmission component, and the power component is driven by the drive position adjustment component to engage with one of the transmission components. The power component is used to drive the transmission component to drive the mounting plate to move in the horizontal direction.

[0006] Furthermore, a lifting mechanism is provided in the installation box, and the lifting mechanism includes a lifting motor, a lifting screw, a lifting slide and a lifting block. The lifting motor is fixed on the installation box, and the lifting screw is rotatably provided on the installation box. One end of the lifting screw is fixedly connected to the output end of the lifting motor, and the lifting slide is fixed on the installation box. The lifting blocks are provided with two groups, one group of lifting blocks is connected to the lifting screw by a thread, and the other group of lifting blocks is slidably provided on the lifting slide. A reset assembly is provided on the lifting block, and the power assembly is respectively connected to the reset assemblies of the two groups of lifting blocks.

[0007] Furthermore, the driving position adjustment component includes a rotating motor, a rotating shaft and a cam, the rotating motor is fixed on the installation box, the rotating shaft is rotatably arranged on the installation box, one end of the rotating shaft is connected to the output end of the rotating motor, the cam is fixed on the rotating shaft, and multiple groups of cams and transmission components are provided correspondingly.

[0008] Furthermore, the power assembly includes a mounting frame, a power motor and a driving gear, the mounting frame is connected to the reset assembly, the power motor is fixed on the mounting frame, and the driving gear is fixed on the output end of the power motor.

[0009] Furthermore, the transmission assembly includes a first transmission shaft, a driven gear, a threaded barrel, a threaded rod and a guide slide bar. The first transmission shaft is rotatably arranged on the side wall of the installation box, the driven gear is fixedly arranged on the first transmission shaft, a driving bevel gear is fixedly provided on the first transmission shaft, the threaded barrel is rotatably arranged on the side wall of the installation box, a driven bevel gear is fixedly provided on the threaded barrel, the driving bevel gear and the driven bevel gear are meshed, the threaded rod is connected to the threaded barrel through a thread, the guide slide bar is slidably arranged on the side wall of the installation box, the mounting plate is connected to the threaded rod and the guide slide bar, and the driving gear is configured to be driven by the lifting mechanism and the cam to mesh with the driven gear of one group of transmission assemblies.

[0010] Furthermore, the reset assembly includes a reset sleeve, a reset slide rod and a reset spring. The reset sleeve is fixed on the lifting block, one end of the reset slide rod is slidably arranged in the reset sleeve, and the other end of the reset slide rod is fixedly connected to the mounting frame. The reset spring is sleeved on the reset sleeve and the reset slide rod, and the two ends of the reset spring are respectively connected to the lifting block and the mounting frame.

[0011] Furthermore, the positioning mechanisms are provided in multiple groups distributed along the annular array.

[0012] Furthermore, a transformer bushing testing device also includes a height adjustment mechanism, which includes a vertical frame, a height adjustment screw and a height adjustment slide rod. The vertical frame is provided with a height adjustment slot, the height adjustment screw is rotatably arranged in the height adjustment slot, the height adjustment slide rod is fixed in the height adjustment slot, the lifting plate is connected to the height adjustment screw by a thread, and the lifting plate is slidably arranged on the height adjustment slide rod, the installation box of the fixed positioning mechanism is arranged on the vertical frame, and the installation box of the movable positioning mechanism is arranged on the lifting plate.

[0013] Furthermore, a drive frame is fixedly provided on the vertical frame, a drive motor is fixedly provided on the drive frame, a plurality of second transmission shafts are rotatably provided on the drive frame, the output end of the drive motor is connected to one of the second transmission shafts, and adjacent second transmission shafts and height adjustment screws are provided with corresponding belt pulleys, and a synchronous belt is provided on the belt pulley.

[0014] Furthermore, an electric telescopic rod is provided between the lower ends of the plurality of groups of height adjustment mechanisms, and an oil barrel is fixedly provided on the upper end of the electric telescopic rod.

[0015] Furthermore, a reinforcement plate is provided on the outer side of the vertical frame.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: 1. By adjusting the spacing between the movable positioning mechanism and the fixed positioning mechanism, the positioning requirements of transformer bushings of different voltage levels in the axial direction are met; and by setting the mounting plate that can be moved in the horizontal direction and the mounting slots of different sizes on different mounting plates, the positioning requirements of transformer bushings of different voltage levels in the radial direction are met; The positioning requirements in the axial and radial directions ensure that the transformer bushing is in a stable vertical state during the test.

[0017] 2. By driving the position adjustment component and the power component that can perform lifting motion, different mounting plates are driven to move in the horizontal direction. Only one set of power motors is required to drive different mounting plates to position transformer bushings of different voltage levels in the radial direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of part A; Figure 3 is a schematic diagram of a cross-sectional structure in a top view of an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the installation box in a top view according to an embodiment of the present invention; Figure 5 is a schematic cross-sectional view of an embodiment of the present invention in the main viewing direction; Figure 6 for Figure 5 A partial enlarged view of part B.

[0019] Among them, 1. lifting plate, 2. movable positioning mechanism, 3. fixed positioning mechanism, 4. positioning plate, 5. positioning slot, 6. mounting box, 7. lifting motor, 8. lifting screw, 9. lifting slide, 10. lifting block, 11. rotating motor, 12. rotating shaft, 13. cam, 14. mounting frame, 15. power motor, 16. driving gear, 17. first transmission shaft, 18. driven gear, 19. threaded cylinder, 20. threaded rod, 21. guide slide, 22. driving bevel gear, 23. driven bevel gear, 24. reset sleeve, 25. reset slide, 26. reset spring, 27. vertical frame, 28. height adjustment screw, 29. height adjustment slide, 30. height adjustment slot, 31. driving frame, 32. driving motor, 33. second transmission shaft, 34. synchronous belt, 35. electric telescopic rod, 36. oil drum, 37. reinforcement plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0022] See Figure 1 and Figure 2 , this embodiment provides a transformer bushing test device, comprising: The lifting plate 1 is configured to be lifted and lowered in the vertical direction; The positioning mechanism is provided with two groups in the vertical direction, namely a movable positioning mechanism 2 and a fixed positioning mechanism 3. The movable positioning mechanism 2 is provided above the fixed positioning mechanism 3. The movable positioning mechanism 2 is connected to the lifting plate 1. The movable positioning mechanism 2 is configured to rise and fall with the lifting plate 1, and the vertical spacing between the movable positioning mechanism 2 and the fixed positioning mechanism 3 is adjustable; Among them, the positioning mechanism includes multiple groups of positioning plates 4, which are configured to be movable in the horizontal direction. The multiple groups of positioning plates 4 are respectively provided with positioning grooves 5 of different sizes. The positioning grooves 5 of different sizes are used to vertically position transformer bushings of different sizes (i.e., different voltage levels). The multiple groups of positioning plates 4 are arranged to adapt to transformer bushings of different voltage levels, and the positioning plates 4 are moved in the horizontal direction to cooperate with the positioning grooves 5 of different sizes to meet the positioning of transformer bushings of different voltage levels.

[0023] Specifically, see Figure 3 In this embodiment, multiple groups of positioning mechanisms are distributed along the annular array, and the transformer bushing is positioned from multiple directions through the cooperation of multiple groups of positioning mechanisms.

[0024] During use, when positioning transformer bushings of different voltage levels, the positioning plate 4 corresponding to the positioning groove 5 adapted to the transformer bushing is controlled to move in the horizontal direction. The positioning plate 4 drives the positioning groove 5 close to the transformer bushing to position the transformer sleeve, ensuring that the transformer bushing is placed vertically, and providing stable conditions for subsequent tests of the transformer bushing.

[0025] Specifically, see Figure 4 and Figure 6 In this embodiment, the positioning mechanism also includes an installation box 6, a drive position adjustment component, a power component and a transmission component. There are multiple groups of transmission components corresponding to the mounting plates. The mounting plates are connected to the transmission components one by one. The power component is configured to rise and fall between the drive position adjustment component and the transmission component, and the power component is driven by the drive position adjustment component to engage with one of the transmission components. The power component is used to drive the transmission component to drive the mounting plate to move in the horizontal direction.

[0026] During use, when the power assembly is raised or lowered to correspond to one of the transmission assemblies, the position of the power assembly is adjusted by driving the position adjustment assembly so that the power assembly and the transmission assembly engage. The engaged power assembly drives the transmission assembly to move, and the transmission assembly drives the mounting plate to move. The moving mounting plate positions the transformer bushings of different voltage levels to ensure that the transformer bushings are in a stable vertical state during the test.

[0027] Specifically, see Figure 4 and Figure 6In this embodiment, a lifting mechanism is provided in the installation box 6, and the lifting mechanism includes a lifting motor 7, a lifting screw 8, a lifting slide 9 and a lifting block 10. The lifting motor 7 is fixed on the installation box 6, and the lifting screw 8 is rotatably provided on the installation box 6. One end of the lifting screw 8 is fixedly connected to the output end of the lifting motor 7, and the lifting slide 9 is fixedly provided on the installation box 6. There are two groups of lifting blocks 10, one group of lifting blocks 10 is connected to the lifting screw 8 by a thread, and the other group of lifting blocks 10 is slidably provided on the lifting slide 9. A reset component is provided on the lifting block 10, and the power component is respectively connected to the reset components of the two groups of lifting blocks 10.

[0028] During use, the lifting screw 8 is driven to rotate by the lifting motor 7, and the lifting block 10 is driven to rise and fall under the drive of the lifting screw 8 and the guidance of the lifting slide bar 9. The lifting block 10 drives the power component to rise and fall through the reset component. When the power component is lifted and moved to the same horizontal height as one of the transmission components, the power component is driven to engage with the transmission component under the action of the driving position adjustment component. When the power component is working, it can drive the transmission component to move and adjust the position of the mounting plate in the horizontal direction.

[0029] Specifically, see Figure 4 and Figure 6 In this embodiment, the driving position adjustment component includes a rotating motor 11, a rotating shaft 12 and a cam 13. The rotating motor 11 is fixed on the installation box 6, and the rotating shaft 12 is rotatably arranged on the installation box 6. One end of the rotating shaft 12 is connected to the output end of the rotating motor 11, and the cam 13 is fixed on the rotating shaft 12. There are multiple groups of cams 13 corresponding to the transmission components.

[0030] In the initial state, the large end of the cam 13 is away from the transmission assembly. Under the action of the reset assembly, the power assembly is pulled away from the transmission assembly to ensure that the lifting mechanism can drive the power assembly to rise and fall smoothly and avoid the transmission assembly interfering with the lifting of the power assembly. When the lifting block 10 drives the power assembly to a height position corresponding to one set of transmission assemblies, the rotating motor 11 is started, and the rotating motor 11 drives the rotating shaft 12 to rotate. The rotating shaft 12 drives the cam 13 to rotate. The large end of the cam 13 rotates close to the power assembly, and the large end of the cam 13 squeezes the power assembly, causing the power assembly to engage with the transmission assembly.

[0031] Specifically, see Figure 4 and Figure 6 In this embodiment, the power assembly includes a mounting frame 14, a power motor 15 and a driving gear 16. The mounting frame 14 is connected to the reset assembly, the power motor 15 is fixed on the mounting frame 14, and the driving gear 16 is fixed on the output end of the power motor 15.

[0032] Specifically, see Figure 4 and Figure 6In this embodiment, the transmission assembly includes a first transmission shaft 17, a driven gear 18, a threaded cylinder 19, a threaded rod 20 and a guide slide 21. The first transmission shaft 17 is rotatably arranged on the side wall of the installation box 6, and the driven gear 18 is fixedly arranged on the first transmission shaft 17. A driving bevel gear 22 is fixedly provided on the first transmission shaft 17, and the threaded cylinder 19 is rotatably arranged on the side wall of the installation box 6. A driven bevel gear 23 is fixedly provided on the threaded cylinder 19. The driving bevel gear 22 and the driven bevel gear 23 are meshed. The driving force transmission direction is adjusted by the meshing of the driving bevel gear 22 and the driven bevel gear 23. The threaded rod 20 is connected to the threaded cylinder 19 by a thread, and the guide slide 21 is slidably provided on the side wall of the installation box 6. The mounting plate is connected to the threaded rod 20 and the guide slide 21. The driving gear 16 is configured to be driven by the lifting mechanism and the cam 13 to mesh with the driven gear 18 of one group of the transmission assemblies.

[0033] During use, the power motor 15 drives the driving gear 16 to rotate, the driving gear 16 drives the driven gear 18 meshing with it to rotate, the driven gear 18 drives the first transmission shaft 17 to rotate, the first transmission shaft 17 drives the driving bevel gear 22 to rotate, and the engagement of the driving bevel gear 22 and the driven bevel gear 23 drives the threaded cylinder 19 to rotate, and the threaded cylinder 19 drives the threaded rod 20 to move. Under the drive of the threaded rod 20 and the guiding action of the guide slide rod 21, the mounting plate is driven to move, and the mounting plate drives the mounting groove to position the transformer sleeve to ensure that the transformer sleeve is in a vertical state.

[0034] Specifically, see Figure 4 In this embodiment, the reset assembly includes a reset sleeve 24, a reset slide rod 25 and a reset spring 26. The reset sleeve 24 is fixed on the lifting block 10, one end of the reset slide rod 25 is slidably arranged in the reset sleeve 24, and the other end of the reset slide rod 25 is fixedly connected to the mounting frame 14. The reset spring 26 is sleeved on the reset sleeve 24 and the reset slide rod 25, and the two ends of the reset spring 26 are respectively connected to the lifting block 10 and the mounting frame 14.

[0035] During use, when the cam 13 does not squeeze the mounting frame 14, the driving gear 16 is driven away from the driven gear 18 under the action of the return spring 26, ensuring that the driving gear 16 is smoothly lifted and lowered under the driving action of the lifting mechanism; when the driving gear 16 is lifted and lowered to a height corresponding to the driven gear 18 of a set of transmission components, the rotating shaft 12 is driven to rotate by the rotating motor 11, and the rotating shaft 12 drives the cam 13 to squeeze the mounting frame 14, so that the driving gear 16 drives the driven gear 18 to rotate, and under the action of the power motor 15, the driving gear 16 and the driven gear 18 are driven to rotate.

[0036] Specifically, see Figure 1 and Figure 2The transformer bushing test device provided in this embodiment also includes a height adjustment mechanism, which includes a vertical frame 27, a height adjustment screw 28, and a height adjustment slide 29. The vertical frame 27 is provided with a height adjustment slot 30, the height adjustment screw 28 is rotatably mounted in the height adjustment slot 30, and the height adjustment slide 29 is fixedly mounted in the height adjustment slot 30. The lifting plate 1 is connected to the height adjustment screw 28 via a thread and slides on the height adjustment slide 29. The mounting box 6 of the fixed positioning mechanism 3 is mounted on the vertical frame 27, and the mounting box 6 of the movable positioning mechanism 2 is mounted on the lifting plate 1. A reinforcement plate 37 is provided on the outer side of the vertical frame 27 to improve the stability of the device.

[0037] Specifically, see Figure 1 and Figure 2 In this embodiment, a driving frame 31 is fixed on the vertical frame 27, a driving motor 32 is fixed on the driving frame 31, and a plurality of second transmission shafts 33 are rotatably provided on the driving frame 31. The output end of the driving motor 32 is connected to one of the second transmission shafts 33, and adjacent second transmission shafts 33 and height adjustment screws 28 are provided with corresponding belt pulleys, and a synchronous belt 34 is provided on the belt pulley.

[0038] When in use, the driving motor 32 drives a set of second transmission shafts 33 connected to it to rotate, and drives the height adjustment screw 28 to rotate under the transmission action of the synchronous belt 34 and the belt pulley. The driving of the height adjustment screw 28 and the guiding cooperation of the height adjustment slide bar 29 drive the lifting plate 1 to rise and fall, and the lifting plate 1 drives the movable positioning mechanism 2 to rise and fall, so that the distance between the movable positioning mechanism 2 and the fixed positioning mechanism 3 is adapted to the transformer sleeves of different voltage levels.

[0039] Specifically, see Figure 1 and Figure 5 In this embodiment, an electric telescopic rod 35 is provided between the lower ends of the multiple groups of height adjustment mechanisms. An oil barrel 36 is fixedly provided at the upper end of the electric telescopic rod 35. The lower end of the transformer bushing is insulated and sealed by the insulating oil in the oil barrel 36, and the height of the oil barrel 36 is adjusted by the extension and retraction of the electric telescopic rod 35 to adapt to transformer bushings of different voltage levels.

[0040] The working principle of the transformer bushing test device provided in this embodiment is as follows: (1) Start the drive motor 32. The drive motor 32 drives a set of second transmission shafts 33 connected to it to rotate. Under the transmission action of the synchronous belt 34, the second transmission shaft 33 drives the height adjustment screw 28 to rotate. Under the drive of the height adjustment screw 28 and the guidance of the height adjustment slide 29, the lifting plate 1 is driven to rise and fall. The lifting plate 1 drives the movable positioning mechanism 2 to rise and fall, and adjusts the distance between the movable positioning mechanism 2 and the fixed positioning mechanism 3 so that the distance between the movable positioning mechanism 2 and the fixed positioning mechanism 3 is adapted to the voltage level of the transformer bushing.

[0041] (2) Start the lifting motor 7, which drives the lifting screw 8 to rotate. Under the drive of the lifting screw 8 and the guidance of the lifting slide 9, the lifting block 10 is driven to move up and down. The lifting block 10 drives the installation frame 14 to move up and down. The lifting block 10 drives the power assembly to move up and down to the height position of the positioning plate 4 that is suitable for the voltage level of the transformer bushing.

[0042] (3) Start the rotating motor 11, which drives the rotating shaft 12 to rotate, and the rotating shaft 12 drives the cam 13 to rotate. The large end of the cam 13 turns to the mounting frame 14 and squeezes the mounting frame 14. At this time, the return spring 26 stretches, and the driving gear 16 engages with the driven gear 18 corresponding to the group of positioning plates 4. The power motor 15 drives the driving gear 16 to rotate, and the driving gear 16 drives the driven gear 18 to rotate, and drives the threaded barrel 19 to rotate through the engagement of the driving bevel gear 22 and the driven bevel gear 23. Under the driving of the threaded barrel 19 on the threaded rod 20 and the guiding action of the guide slide 21, the positioning plate 4 is driven to move in the horizontal direction. The multiple groups of positioning plates 4 located on the same horizontal plane cooperate to vertically position the transformer bushing.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, material, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, material, or apparatus.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A transformer bushing test device, characterized in that: include: A lifting plate (1) configured to be lifted and lowered in a vertical direction; The positioning mechanism comprises two groups arranged in the vertical direction, namely a movable positioning mechanism (2) and a fixed positioning mechanism (3), wherein the movable positioning mechanism (2) is connected to the lifting plate (1), and the movable positioning mechanism (2) is configured to rise and fall with the lifting plate (1), and the vertical spacing between the movable positioning mechanism (2) and the fixed positioning mechanism (3) is adjustable; The positioning mechanism comprises a plurality of positioning plates (4), the positioning plates (4) being configured to be movable in a horizontal direction, the plurality of positioning plates (4) being respectively provided with positioning grooves (5) of different sizes, the positioning grooves (5) of different sizes being used for vertically positioning transformer bushings of different sizes.

2. The transformer bushing test device according to claim 1, characterized in that: The positioning mechanism further comprises an installation box (6), a drive position adjustment component, a power component and a transmission component, wherein the transmission component is provided with a plurality of groups corresponding to the installation plate, the installation plate is connected to the transmission component in a one-to-one correspondence, the power component is configured to rise and fall between the drive position adjustment component and the transmission component, and the power component is driven by the drive position adjustment component to engage with one of the transmission components, and the power component is used to drive the transmission component to drive the installation plate to move in the horizontal direction.

3. The transformer bushing test device according to claim 2, characterized in that: A lifting mechanism is provided in the installation box (6), and the lifting mechanism includes a lifting motor (7), a lifting screw (8), a lifting slide (9) and a lifting block (10). The lifting motor (7) is fixedly provided on the installation box (6), the lifting screw (8) is rotatably provided on the installation box (6), and is fixedly connected to the output end of the lifting motor (7), the lifting slide (9) is fixedly provided on the installation box (6), and the lifting block (10) is provided with two groups, one group of the lifting blocks (10) is connected to the lifting screw (8) by a thread, and the other group of the lifting blocks (10) is slidably provided on the lifting slide (9), and a reset component is provided on the lifting block (10), and the power component is respectively connected to the reset components of the two groups of lifting blocks (10).

4. The transformer bushing test device according to claim 3, characterized in that: The driving position adjustment component comprises a rotating motor (11), a rotating shaft (12) and a cam (13); the rotating motor (11) is fixedly mounted on the mounting box (6); the rotating shaft (12) is rotatably mounted on the mounting box (6); one end of the rotating shaft (12) is connected to the output end of the rotating motor (11); the cam (13) is fixedly mounted on the rotating shaft (12); and a plurality of cams (13) are provided corresponding to the transmission component.

5. The transformer bushing test device according to claim 4, characterized in that: The power assembly comprises a mounting frame (14), a power motor (15) and a driving gear (16); the mounting frame (14) is connected to the reset assembly; the power motor (15) is fixed on the mounting frame (14); and the driving gear (16) is fixed on the output end of the power motor (15).

6. The transformer bushing test device according to claim 5, characterized in that: The transmission assembly comprises a first transmission shaft (17), a driven gear (18), a threaded barrel (19), a threaded rod (20) and a guide slide bar (21), wherein the first transmission shaft (17) is rotatably mounted on the side wall of the mounting box (6), the driven gear (18) is fixedly mounted on the first transmission shaft (17), a driving bevel gear (22) is fixedly mounted on the first transmission shaft (17), the threaded barrel (19) is rotatably mounted on the side wall of the mounting box (6), and the threaded barrel (19) is fixedly mounted on the first transmission shaft (17). A driven bevel gear (23) is fixedly provided, the driving bevel gear (22) and the driven bevel gear (23) are meshed, the threaded rod (20) is connected to the threaded cylinder (19) through a thread, the guide slide rod (21) is slidably provided on the side wall of the installation box (6), the installation plate is connected to the threaded rod (20) and the guide slide rod (21), and the driving gear (16) is configured to be driven by the lifting mechanism and the cam (13) to mesh with the driven gear (18) of one set of transmission components.

7. The transformer bushing test device according to claim 6, characterized in that: The reset assembly includes a reset sleeve (24), a reset slide rod (25) and a reset spring (26); the reset sleeve (24) is fixedly arranged on the lifting block (10); one end of the reset slide rod (25) is slidably arranged in the reset sleeve (24); the other end of the reset slide rod (25) is fixedly connected to the mounting frame (14); the reset spring (26) is sleeved on the reset sleeve (24) and the reset slide rod (25); and the two ends of the reset spring (26) are respectively connected to the lifting block (10) and the mounting frame (14).

8. The transformer bushing test device according to claim 1, characterized in that: The invention also includes a height adjustment mechanism, which includes a vertical frame (27), a height adjustment screw (28) and a height adjustment slide bar (29). A height adjustment slot (30) is provided on the vertical frame (27). The height adjustment screw (28) is rotatably arranged in the height adjustment slot (30). The height adjustment slide bar (29) is fixedly arranged in the height adjustment slot (30). The lifting plate (1) is connected to the height adjustment screw (28) through a thread. The lifting plate (1) is slidably arranged on the height adjustment slide bar (29). The installation box (6) of the fixed positioning mechanism (3) is arranged on the vertical frame (27), and the installation box (6) of the movable positioning mechanism (2) is arranged on the lifting plate (1).

9. The transformer bushing test device according to claim 8, characterized in that: A driving frame (31) is fixedly provided on the vertical frame (27), a driving motor (32) is fixedly provided on the driving frame (31), a plurality of second transmission shafts (33) are rotatably provided on the driving frame (31), an output end of the driving motor (32) is connected to one of the second transmission shafts (33), adjacent second transmission shafts (33) and height adjustment screws (28) are provided with corresponding belt pulleys, and a synchronous belt (34) is sleeved on the belt pulleys.

10. The transformer bushing test device according to claim 8, characterized in that: An electric telescopic rod (35) is provided between the lower ends of the plurality of groups of height adjustment mechanisms, and an oil barrel (36) is fixedly provided at the upper end of the electric telescopic rod (35).

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