A transformer bushing testing device

Abstract

The application provides a transformer bushing test device, and relates to the technical field of power system testing.The device comprises a lifting plate and a positioning mechanism.The lifting plate is configured to be lifted in the vertical direction.The positioning mechanism comprises two groups of positioning mechanisms arranged in the vertical direction, namely a movable positioning mechanism and a fixed positioning mechanism.The movable positioning mechanism is connected to the lifting plate, and is configured to be lifted with the lifting plate.The spacing between the movable positioning mechanism and the fixed positioning mechanism is adjustable.The positioning mechanism comprises multiple groups of positioning plates, which are configured to be movable in the horizontal direction.Different sizes of positioning grooves are formed in the multiple groups of positioning plates, and the different sizes of the positioning grooves are used for vertically positioning transformer bushings of different voltage grades.The application specifically provides a transformer bushing test device which can vertically position transformer bushings of different voltage grades.

Description

Technical Field

[0001] This invention relates to the field of power system testing technology, specifically to a transformer bushing testing device. Background Technology

[0002] In power systems, transformer bushings are a crucial component of transformers, and their reliability directly impacts the safe and stable operation of the entire power system. During replacement, major overhauls, and minor repairs, transformer bushings of different voltage levels require acceptance tests, routine tests, and diagnostic tests according to relevant standards to ensure their performance meets requirements. According to the acceptance procedures, when conducting acceptance tests on transformer bushings of various voltage levels, the bushings must be placed vertically, and the bottom of the bushing must be insulated and sealed with transformer oil.

[0003] Transformer bushings of different voltage levels vary in size, requiring different specifications of bushing test stands for compatibility. However, existing test stand designs are relatively simple, mostly only applicable to one or a few specific specifications of transformer bushings, making them difficult to use for other specifications and exhibiting extremely poor adaptability. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a transformer bushing testing device to at least partially solve the problems mentioned in the background art.

[0005] This invention provides the following technical solution: A transformer bushing testing device proposed in this invention includes:

[0006] The lifting platform is configured to move up and down in the vertical direction;

[0007] The positioning mechanism has two sets arranged vertically. The two sets of positioning mechanisms are a movable positioning mechanism and a fixed positioning mechanism. The movable positioning mechanism is arranged 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 distance between the movable positioning mechanism and the fixed positioning mechanism is adjustable.

[0008] The positioning mechanism includes multiple sets of positioning plates, which are configured to move horizontally. Each set of positioning plates has a positioning groove of a different size, which is used for vertical positioning of transformer bushings of different sizes.

[0009] Further, the positioning mechanism further comprises a mounting box, a driving position adjusting assembly, a power assembly and a transmission assembly, a plurality of sets of the transmission assembly are arranged corresponding to the mounting plate, the mounting plate is connected with the transmission assembly one by one, the power assembly is arranged to be lifted between the driving position adjusting assembly and the transmission assembly, and the power assembly is driven by the driving position adjusting assembly and engaged with one of the transmission assemblies, and the power assembly is used to drive the transmission assembly to drive the mounting plate to move in the horizontal direction.

[0010] Further, the mounting box is provided with a lifting mechanism, the lifting mechanism comprises a lifting motor, a lifting screw rod, a lifting slide rod and a lifting block, the lifting motor is fixedly arranged on the mounting box, the lifting screw rod is rotatably arranged on the mounting box, one end of the lifting screw rod is fixedly connected with the output end of the lifting motor, the lifting slide rod is fixedly arranged on the mounting box, the lifting block is provided with two sets, one set of the lifting block is connected with the lifting screw rod through threads, and the other set of the lifting block is slidably arranged on the lifting slide rod, the lifting block is provided with a reset assembly, and the power assembly is connected with the reset assemblies of the two sets of lifting blocks respectively.

[0011] Further, the driving position adjusting assembly comprises a rotating motor, a rotating shaft and a cam, the rotating motor is fixedly arranged on the mounting box, the rotating shaft is rotatably arranged on the mounting box, one end of the rotating shaft is connected with the output end of the rotating motor, and the cam is fixedly arranged on the rotating shaft, and a plurality of sets of the cam are arranged corresponding to the transmission assembly.

[0012] Further, the power assembly comprises a mounting frame, a power motor and a driving gear, the mounting frame is connected with the reset assembly, the power motor is fixedly arranged on the mounting frame, and the driving gear is fixedly arranged on the output end of the power motor.

[0013] Further, the transmission assembly comprises a first transmission shaft, a driven gear, a threaded cylinder, a threaded rod and a guide slide rod, the first transmission shaft is rotatably arranged on the side wall of the mounting box, the driven gear is fixedly arranged on the first transmission shaft, a driving bevel gear is fixedly arranged on the first transmission shaft, the threaded cylinder is rotatably arranged on the side wall of the mounting box, a driven bevel gear is fixedly arranged on the threaded cylinder, the driving bevel gear and the driven bevel gear are engaged, the threaded rod is connected with the threaded cylinder through threads, the guide slide rod is slidably arranged on the side wall of the mounting box, the mounting plate is connected with the threaded rod and the guide slide rod, and the driving gear is arranged to be driven by the lifting mechanism and the cam and engaged with the driven gear of one of the transmission assemblies.

[0014] Further, the reset assembly comprises a reset sleeve, a reset slide rod and a reset spring, one end of the reset sleeve is fixed on the lifting block, one end of the reset slide rod is slidably arranged in the reset sleeve, the other end of the reset slide rod is fixedly connected with 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 with the lifting block and the mounting frame.

[0015] Further, the positioning mechanism is provided with a plurality of groups in an annular array.

[0016] Further, the transformer bushing testing device further comprises a height adjusting mechanism, the height adjusting mechanism comprises a vertical frame, a height adjusting screw rod and a height adjusting slide rod, the vertical frame is provided with a height adjusting slot, the height adjusting screw rod is rotatably arranged in the height adjusting slot, the height adjusting slide rod is fixedly arranged in the height adjusting slot, the lifting plate is connected with the height adjusting screw rod through threads, and the lifting plate is slidably arranged on the height adjusting slide rod.

[0017] Further, the vertical frame is fixedly provided with a driving frame, the driving frame is fixedly provided with a driving motor, a plurality of second transmission shafts are rotatably arranged on the driving frame, the output end of the driving motor is connected with one of the second transmission shafts, the adjacent second transmission shafts are provided with pulleys corresponding to the height adjusting screw rods, and the pulleys are sleeved with synchronous belts.

[0018] Further, a plurality of electric telescopic rods are arranged between the lower ends of the height adjusting mechanisms, and the upper ends of the electric telescopic rods are fixedly provided with oil barrels.

[0019] Further, the outer side of the vertical frame is provided with a reinforcing plate.

[0020] The beneficial effects achieved by the above structure are as follows:

[0021] 1. By adjusting the distance between the movable positioning mechanism and the fixed positioning mechanism, the positioning requirements of the transformer bushing in the axial direction of different voltage grades are met; and by arranging the mounting plate that can move in the horizontal direction and the mounting slots of different sizes on different mounting plates, the positioning requirements of the transformer bushing in the radial direction of different voltage grades are met.

[0022] By the positioning requirements in the axial direction and the radial direction, the transformer bushing is ensured to be in a stable vertical state during testing.

[0023] 2. By the cooperation of the driving position adjusting assembly and the power assembly capable of lifting movement, different installation plates are driven to move in the horizontal direction; only one set of power motor is needed to drive different installation plates to position the transformer bushings of different voltage levels from the radial direction. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and are included to provide a further understanding of the application, and are made a part of the specification. In the drawings:

[0025] Figure 1 is a schematic diagram of the overall structure of an embodiment of the application;

[0026] Figure 2 is a schematic diagram of the overall structure of an embodiment of the application; Figure 1

[0027] Figure 3 is a schematic diagram of the overall structure of an embodiment of the application;

[0028] Figure 4 is a schematic diagram of the overall structure of an embodiment of the application;

[0029] Figure 5 is a schematic diagram of the overall structure of an embodiment of the application;

[0030] Figure 6 is a schematic diagram of the overall structure of an embodiment of the application; Figure 5

[0031] Wherein, 1, lifting plate, 2, movable positioning mechanism, 3, fixed positioning mechanism, 4, positioning plate, 5, positioning groove, 6, installation box, 7, lifting motor, 8, lifting screw, 9, lifting slide rod, 10, lifting block, 11, rotating motor, 12, rotating shaft, 13, cam, 14, installation frame, 15, power motor, 16, driving gear, 17, first transmission shaft, 18, driven gear, 19, threaded cylinder, 20, threaded rod, 21, guide slide rod, 22, driving bevel gear, 23, driven bevel gear, 24, reset sleeve, 25, reset slide rod, 26, reset spring, 27, vertical frame, 28, height adjusting screw, 29, height adjusting slide rod, 30, height adjusting groove, 31, driving frame, 32, driving motor, 33, second transmission shaft, 34, synchronous belt, 35, electric telescopic rod, 36, oil drum, 37, reinforcing plate. DETAILED DESCRIPTION

[0032] ​​With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application; based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0033] It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "in" and "out" refer to the directions towards or away from the geometric center of a particular component.

[0034] Referring to Figure 1 and Figure 2 , the present embodiment provides a transformer bushing test device, which comprises:

[0035] The lifting plate 1 is configured to be lifted in the vertical direction;

[0036] The positioning mechanism is provided with two groups in the vertical direction, and the two groups of positioning mechanisms are respectively the movable positioning mechanism 2 and the fixed positioning mechanism 3. The movable positioning mechanism 2 is arranged above the fixed positioning mechanism 3, the movable positioning mechanism 2 is connected with the lifting plate 1, and the movable positioning mechanism 2 is configured to be lifted with the lifting plate 1. The vertical distance between the movable positioning mechanism 2 and the fixed positioning mechanism 3 is adjustable;

[0037] Among them, the positioning mechanism includes multiple groups of positioning plates 4, the positioning plates 4 are configured to be movable in the horizontal direction, and different sizes of positioning grooves 5 are respectively arranged on the multiple groups of positioning plates 4. The different sizes of positioning grooves 5 are used for vertical positioning of transformer bushings of different sizes (i.e. different voltage grades). Through the setting of the multiple groups of positioning plates 4, the transformer bushings of different voltage grades are matched, and through the movement of the positioning plates 4 in the horizontal direction and the cooperation with the different sizes of positioning grooves 5, the positioning of the transformer bushings of different voltage grades is met.

[0038] Specifically, referring to Figure 3 In the present embodiment, multiple groups of positioning mechanisms are arranged in a ring array. The transformer bushings are positioned from multiple directions through the cooperation of the multiple groups of positioning mechanisms.

[0039] When positioning the transformer bushings of different voltage grades, the positioning plate 4 corresponding to the positioning groove 5 matched with the transformer bushing is controlled to move in the horizontal direction. The positioning plate 4 drives the positioning groove 5 to approach the transformer bushing, and the transformer bushing is positioned, so as to ensure that the transformer bushing is vertically placed and provide stable conditions for the subsequent test of the transformer bushing.

[0040] Specifically, referring to Figure 4 and Figure 6In the embodiment, the positioning mechanism further comprises a mounting box 6, a driving position adjusting assembly, a power assembly and a transmission assembly. The transmission assembly is provided with a plurality of groups corresponding to the mounting plate. The mounting plate is connected to the transmission assembly one by one. The power assembly is configured to be lifted between the driving position adjusting assembly and the transmission assembly. The power assembly is driven by the driving position adjusting assembly to engage with one of the transmission assemblies. The power assembly is used to drive the transmission assembly to move the mounting plate in the horizontal direction.

[0041] In use, when the power assembly is lifted to correspond to one of the transmission assemblies, the position of the power assembly is adjusted by the driving position adjusting assembly to engage the power assembly with the transmission assembly. The engaged power assembly drives the transmission assembly to move. The transmission assembly drives the mounting plate to move. The moving mounting plate positions the transformer bushing of different voltage levels to ensure that the transformer bushing is in a stable vertical state during testing.

[0042] Specifically, referring to Figure 4 and Figure 6 In the embodiment, the mounting box 6 is provided with a lifting mechanism. The lifting mechanism comprises a lifting motor 7, a lifting screw 8, a lifting slide rod 9 and a lifting block 10. The lifting motor 7 is fixedly arranged on the mounting box 6. The lifting screw 8 is rotatably arranged on the mounting box 6. One end of the lifting screw 8 is fixedly connected to the output end of the lifting motor 7. The lifting slide rod 9 is fixedly arranged on the mounting box 6. The lifting block 10 is provided with two groups. One group of the lifting block 10 is connected to the lifting screw 8 through threads. The other group of the lifting block 10 is slidingly arranged on the lifting slide rod 9. The lifting block 10 is provided with a reset assembly. The power assembly is connected to the reset assembly of the two groups of the lifting block 10.

[0043] In use, the lifting screw 8 is driven to rotate by the lifting motor 7. The lifting block 10 is lifted under the driving of the lifting screw 8 and the guidance of the lifting slide rod 9. The power assembly is lifted by the reset assembly. When the power assembly is lifted to the same horizontal height as one of the transmission assemblies, the power assembly is engaged with the transmission assembly under the action of the driving position adjusting assembly. The power assembly drives the transmission assembly to move when it works. The position of the mounting plate is adjusted in the horizontal direction.

[0044] Specifically, referring to Figure 4 and Figure 6 In the embodiment, the driving position adjusting assembly comprises a rotating motor 11, a rotating shaft 12 and a cam 13. The rotating motor 11 is fixedly arranged on the mounting box 6. The rotating shaft 12 is rotatably arranged 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 arranged on the rotating shaft 12. The cam 13 is provided with a plurality of groups corresponding to the transmission assembly.

[0045] In the initial state, the big end of the cam 13 is away from the transmission assembly, and the power assembly is pulled away from the transmission assembly under the action of the reset assembly, so as to ensure that the lifting mechanism can drive the power assembly to rise and fall smoothly, and to avoid the interference of the transmission assembly with the rising and falling of the power assembly. When the lifting block 10 drives the power assembly to rise and fall to the height position corresponding to one of the transmission assemblies, the rotating motor 11 is started, the rotating motor 11 drives the rotating shaft 12 to rotate, the rotating shaft 12 drives the cam 13 to rotate, the big end of the cam 13 rotates to be close to the power assembly, and the power assembly is meshed with the transmission assembly through the extrusion of the big end of the cam 13.

[0046] Specifically, referring to 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 with the reset assembly, the power motor 15 is fixedly arranged on the mounting frame 14, and the driving gear 16 is fixedly arranged on the output end of the power motor 15.

[0047] Specifically, referring to Figure 4 and Figure 6 In 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 rod 21, the first transmission shaft 17 is rotatably arranged on the side wall of the mounting box 6, the driven gear 18 is fixedly arranged on the first transmission shaft 17, a driving bevel gear 22 is fixedly arranged on the first transmission shaft 17, the threaded cylinder 19 is rotatably arranged on the side wall of the mounting box 6, a driven bevel gear 23 is fixedly arranged on the threaded cylinder 19, the driving bevel gear 22 and the driven bevel gear 23 are meshed, the driving direction of the driving force is adjusted through the meshing of the driving bevel gear 22 and the driven bevel gear 23, the threaded rod 20 is connected with the threaded cylinder 19 through threads, the guide slide rod 21 is slidably arranged through the side wall of the mounting box 6, and a mounting plate is connected with 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 of the transmission assemblies.

[0048] In use, the power motor 15 drives the driving gear 16 to rotate, the driving gear 16 drives the driven gear 18 meshed therewith 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, the threaded cylinder 19 is driven to rotate through the meshing of the driving bevel gear 22 and the driven bevel gear 23, the threaded cylinder 19 drives the threaded rod 20 to move, the mounting plate is driven to move under the driving of the threaded rod 20 and the guiding action of the guide slide rod 21, the mounting plate drives the mounting groove to position the transformer sleeve, and the transformer sleeve is ensured to be in a vertical state.

[0049] Specifically, referring to Figure 4In the embodiment, the reset assembly comprises 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 slidingly arranged in the reset sleeve 24. The other end of the reset slide rod 25 is fixedly connected with the mounting frame 14. The reset spring 26 is sleeved on the reset sleeve 24 and the reset slide rod 25. Two ends of the reset spring 26 are respectively connected with the lifting block 10 and the mounting frame 14.

[0050] In use, when the cam 13 does not press the mounting frame 14, the driving main gear 16 is driven by the reset spring 26 to move away from the driven gear 18, so that the main gear 16 is smoothly lifted under the driving of the lifting mechanism. When the main gear 16 is lifted to a corresponding height of the driven gear 18 of one set of transmission assembly, the rotating shaft 12 is driven to rotate by the rotating motor 11, the cam 13 is pressed to the mounting frame 14 by the rotating shaft 12, the main gear 16 is driven to rotate by the cam 13, and the main gear 16 and the driven gear 18 are driven to rotate by the power motor 15.

[0051] Specifically, referring to Figure 1 and Figure 2 The transformer bushing testing device provided in the embodiment further comprises a height adjusting mechanism. The height adjusting mechanism comprises a vertical frame 27, a height adjusting screw rod 28 and a height adjusting slide rod 29. The height adjusting groove 30 is formed in the vertical frame 27. The height adjusting screw rod 28 is rotatably arranged in the height adjusting groove 30. The height adjusting slide rod 29 is fixedly arranged in the height adjusting groove 30. The lifting plate 1 is connected with the height adjusting screw rod 28 through screw threads. The lifting plate 1 is slidingly arranged on the height adjusting slide rod 29. The mounting box 6 of the fixed positioning mechanism 3 is arranged on the vertical frame 27. The mounting box 6 of the movable positioning mechanism 2 is arranged on the lifting plate 1. The outer side of the vertical frame 27 is provided with a reinforcing plate 37. The stability of the device is improved by the reinforcing plate 37.

[0052] Specifically, referring to Figure 1 and Figure 2 In the embodiment, the driving frame 31 is fixedly arranged on the vertical frame 27. The driving motor 32 is fixedly arranged on the driving frame 31. A plurality of second transmission shafts 33 are rotatably arranged on the driving frame 31. The output end of the driving motor 32 is connected with one of the second transmission shafts 33. Adjacent second transmission shafts 33 are provided with belt pulleys on the height adjusting screw rod 28 in correspondence. The synchronous belt 34 is sleeved on the belt pulleys.

[0053] In use, the driving motor 32 drives a set of second transmission shafts 33 connected thereto to rotate, and drives the height adjusting screw 28 to rotate under the transmission of the synchronous belt 34 and the pulley, drives the lifting plate 1 to lift under the driving of the height adjusting screw 28 and the guiding of the height adjusting slide 29, drives the movable positioning mechanism 2 to lift under the lifting of the lifting plate 1, and adjusts the distance between the movable positioning mechanism 2 and the fixed positioning mechanism 3 to adapt to the transformer sleeve of different voltage levels.

[0054] Specifically, referring to Figure 1 and Figure 5 In the embodiment, an electric telescopic rod 35 is arranged between the lower ends of the groups of height adjusting mechanisms, and an oil tank 36 is fixedly arranged at the upper end of the electric telescopic rod 35. The lower end of the transformer sleeve is insulated and sealed by the arrangement of the insulating oil in the oil tank 36, and the height of the oil tank 36 is adjusted by the extension and retraction of the electric telescopic rod 35 to adapt to the transformer sleeve of different voltage levels.

[0055] The working principle of the transformer sleeve testing device provided in the embodiment is specifically as follows:

[0056] (1) The driving motor 32 is started, and drives a set of second transmission shafts 33 connected thereto to rotate, drives the height adjusting screw 28 to rotate under the transmission of the synchronous belt 34, drives the lifting plate 1 to lift under the driving of the height adjusting screw 28 and the guiding of the height adjusting slide 29, drives the movable positioning mechanism 2 to lift under the lifting of the lifting plate 1, and adjusts the distance between the movable positioning mechanism 2 and the fixed positioning mechanism 3 to adapt the distance between the movable positioning mechanism 2 and the fixed positioning mechanism 3 to the voltage level of the transformer sleeve.

[0057] (2) The lifting motor 7 is started, and drives the lifting screw 8 to rotate, drives the lifting block 10 to lift under the driving of the lifting screw 8 and the guiding of the lifting slide 9, drives the mounting frame 14 to lift under the lifting of the lifting block 10, and drives the power assembly to the height position of the positioning plate 4 corresponding to the voltage level of the transformer sleeve.

[0058] (3) The rotating motor 11 is started, and drives the rotating shaft 12 to rotate, drives the cam 13 to rotate, and the large end of the cam 13 is turned to the mounting frame 14 and presses the mounting frame 14. At this time, the return spring 26 is stretched, the driving gear 16 is engaged with the driven gear 18 corresponding to the set of positioning plates 4, the power motor 15 drives the driving gear 16 to rotate, the driving gear 16 drives the driven gear 18 to rotate, and drives the threaded cylinder 19 to rotate through the engagement of the driving bevel gear 22 and the driven bevel gear 23. Under the driving of the threaded cylinder 19 to the threaded rod 20 and the guiding of the guiding slide 21, the positioning plate 4 is driven to move horizontally, and the groups of positioning plates 4 located in the same horizontal plane cooperate to vertically position the transformer sleeve.

[0059] It is to be understood that the terminology used herein such as first and second, and the like, is only used to distinguish one entity or action from another entity or action, and does not necessarily require or imply any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0060] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous modifications, substitutions, changes, and adaptations can be made by those skilled in the art without departing from the spirit and scope of the application, which should be limited only by the claims and the equivalents thereof.

Claims

1. A transformer bushing test device, characterized by, The utility model relates to a vertical positioning mechanism for transformer bushing, including: Lifting plate (1) is configured to lift along the vertical direction; Positioning mechanism is provided with two groups along the vertical direction, is activity positioning mechanism (2) and fixed positioning mechanism (3) respectively, the activity positioning mechanism (2) is connected with lifting plate (1), the activity positioning mechanism (2) is configured to lift with lifting plate (1), and the vertical spacing between fixed positioning mechanism (3) is adjustable; Wherein, the positioning mechanism includes multiple positioning plates (4), the positioning plate (4) is configured to be movable along the horizontal direction, multiple positioning plates (4) are respectively provided with different sizes of positioning slot (5) on the positioning plate (4), and the positioning slot (5) of different sizes is used for vertically positioning different sizes of transformer bushing; The positioning mechanism further includes a drive position adjusting assembly, a power assembly and a transmission assembly, the transmission assembly is provided with multiple groups corresponding to the mounting plate, the mounting plate is connected with the transmission assembly one by one, and the power assembly is configured to lift between the drive position adjusting assembly and the transmission assembly. The drive position adjusting assembly includes a cam (13), the cam (13) is provided with multiple groups corresponding to the transmission assembly, the power assembly includes a driving gear (16), the transmission assembly includes a driven gear (18), the driving gear (16) is driven by the cam (13) and engaged with the driven gear (18) of one of the transmission assemblies, for driving the transmission assembly to move the mounting plate in the horizontal direction.

2. The transformer bushing testing device of claim 1, wherein, The positioning mechanism further includes a mounting box (6), the mounting box (6) is provided with a lifting mechanism, the lifting mechanism includes a lifting motor (7), a lifting screw (8), a lifting slide rod (9) and a lifting block (10), the lifting motor (7) is fixedly arranged on the mounting box (6), the lifting screw (8) is rotatably arranged on the mounting box (6) and fixedly connected with the output end of the lifting motor (7), the lifting slide rod (9) is fixedly arranged on the mounting box (6), and the lifting block (10) is provided with two groups, one of the lifting blocks (10) is connected with the lifting screw (8) through threads, the other lifting block (10) is slidably arranged on the lifting slide rod (9), the lifting block (10) is provided with a reset assembly, and the power assembly is connected with the reset assemblies of the two lifting blocks (10) respectively.

3. The transformer bushing testing device of claim 1, wherein, The drive position adjusting assembly further includes a rotating motor (11) and a rotating shaft (12), the rotating motor (11) is fixedly arranged on the mounting box (6), the rotating shaft (12) is rotatably arranged on the mounting box (6), one end of the rotating shaft (12) is connected with the output end of the rotating motor (11), and the cam (13) is fixedly arranged on the rotating shaft (12).

4. The transformer bushing testing device of claim 3, wherein, The power assembly further includes a mounting frame (14) and a power motor (15), the mounting frame (14) is connected with the reset assembly, the power motor (15) is fixedly arranged on the mounting frame (14), and the driving gear (16) is fixedly arranged on the output end of the power motor (15).

5. The transformer bushing testing device of claim 4, wherein, The transmission assembly further comprises a first transmission shaft (17), a threaded cylinder (19), a threaded rod (20) and a guide slide rod (21), the first transmission shaft (17) is rotatably arranged on the side wall of the mounting box (6), the driven gear (18) is fixedly arranged on the first transmission shaft (17), a driving bevel gear (22) is fixedly arranged on the first transmission shaft (17), the threaded cylinder (19) is rotatably arranged on the side wall of the mounting box (6), a driven bevel gear (23) is fixedly arranged on the threaded cylinder (19), the driving bevel gear (22) and the driven bevel gear (23) are engaged, the threaded rod (20) is connected with the threaded cylinder (19) through threads, the guide slide rod (21) is slidably arranged on the side wall of the mounting box (6), the mounting plate is connected with 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 engage with the driven gear (18) of one of the transmission assemblies.

6. The transformer bushing testing device of claim 5, wherein, The reset assembly comprises 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 with the mounting frame (14), and the reset spring (26) is sleeved on the reset sleeve (24) and the reset slide rod (25). The two ends of the reset spring (26) are connected with the lifting block (10) and the mounting frame (14) respectively.

7. The transformer bushing testing device of claim 1, wherein, The height adjusting mechanism comprises a vertical frame (27), a height adjusting screw rod (28) and a height adjusting slide rod (29), the vertical frame (27) is provided with a height adjusting slot (30), the height adjusting screw rod (28) is rotatably arranged in the height adjusting slot (30), and the height adjusting slide rod (29) is fixedly arranged in the height adjusting slot (30). The lifting plate (1) is connected with the height adjusting screw rod (28) through threads, and the lifting plate (1) is slidably arranged on the height adjusting slide rod (29). The mounting box (6) of the fixed positioning mechanism (3) is arranged on the vertical frame (27), and the mounting box (6) of the movable positioning mechanism (2) is arranged on the lifting plate (1).

8. The transformer bushing testing device of claim 7, wherein, The driving frame (31) is fixedly arranged on the vertical frame (27), the driving motor (32) is fixedly arranged on the driving frame (31), a plurality of second transmission shafts (33) are rotatably arranged on the driving frame (31), the output end of the driving motor (32) is connected with one of the second transmission shafts (33), and adjacent second transmission shafts (33) are provided with belt pulleys corresponding to the height adjusting screw rod (28). The synchronous belt (34) is sleeved on the belt pulley.

9. The transformer bushing testing device of claim 7, wherein, The lower ends of a plurality of height adjusting mechanisms are provided with an electric telescopic rod (35), and the upper end of the electric telescopic rod (35) is fixedly provided with an oil drum (36).

Images