Isolating switch testing machine

Abstract

A disconnecting switch testing machine belongs to the technical field of disconnecting switch testing. Which comprises a test case and an isolating switch (2), and is provided with X-direction loading mechanisms (12), Y-direction loading mechanisms (5) and Z-direction loading mechanisms (9) which are connected with terminals of the isolating switch (2), and is characterized in that the X-direction loading mechanisms (12), the Y-direction loading mechanisms (5) and the Z-direction loading mechanisms (9) are respectively arranged at two ends of the isolating switch (2), the X-direction loading mechanisms (12) at two sides are fixed at two ends of the test case, and the Z-direction loading mechanisms (9) are fixed at two ends of the test case. The Y-direction loading mechanisms (5) on the two sides are arranged at the two ends of the disconnecting switch (2) in a spacing-adjustable mode, and the Z-direction loading mechanisms (9) on the two sides are arranged on the side portion of the disconnecting switch (2) in a spacing-adjustable mode. In the isolating switch testing machine, pulling forces in three directions can be respectively applied to the two ends of the isolating switch at the same time, so that the testing efficiency is improved, and meanwhile, the on-site use scene of the isolating switch can be better simulated.

Description

Technical Field

[0001] An isolating switch testing machine belongs to the technical field of isolating switch testing. Background Art

[0002] The terminal static mechanical load test can simulate the load on the terminals of the isolating switch by the cable during the actual operation of the isolating switch. Therefore, the terminal static mechanical load test is an important test item to measure the performance of the isolating switch. The national standard document CB / T1985-2014 details the static mechanical load test of the isolating switch. For the static mechanical load test, that is, a mechanical load is applied to the terminals of the isolating switch in three directions for 1000 cycles. The national standard document CB / T1985-2014 does not limit the loading method for the static mechanical load of the isolating switch. Therefore, in the existing test schemes, the mechanical loads in three directions are generally applied separately. In the current national standard document CB / T 1985-2023, it is further clarified that when conducting the static mechanical load test on the isolating switch, a mechanical load must be applied to the terminals of the isolating switch in three directions simultaneously.

[0003] A Chinese invention patent with the application number 201811148966.4, the application date of September 29, 2018, and the patent name of "Terminal Static Mechanical Load Test Equipment for 12kV Isolating Switch" discloses a technical solution. In this technical solution, although a mechanical load in three directions can be applied to the isolating switch, the following defects still exist: (1) In this technical solution, only one end of the isolating switch can be loaded with a static load. When it is necessary to load a static load on the other end of the isolating switch, the isolating switch needs to be removed and refixed, which is rather cumbersome. (2) This technical solution can only achieve the static mechanical load test of the isolating switch, so its function is single. Summary of the Utility Model

[0004] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide an isolating switch testing machine that can simultaneously apply tensile forces in three directions to both ends of the isolating switch, improve the test efficiency, and better simulate the on-site use scenario of the isolating switch.

[0005] The technical solution adopted by the present utility model to solve its technical problems is as follows: This disconnector testing machine includes a testing chassis, and the disconnector to be tested is installed on the surface of the testing chassis. There are an X-direction loading mechanism, a Y-direction loading mechanism, and a Z-direction loading mechanism connected to the terminals of the disconnector. Its characteristics are that the X-direction loading mechanism, the Y-direction loading mechanism, and the Z-direction loading mechanism are respectively arranged at both ends of the disconnector. The two X-direction loading mechanisms on both sides are fixed at both ends of the testing chassis. The two Y-direction loading mechanisms on both sides are arranged at both ends of the disconnector with adjustable spacing. The two Z-direction loading mechanisms on both sides are arranged on the side of the disconnector with adjustable spacing.

[0006] Preferably, the testing chassis includes a front chassis and a rear chassis fixed together. A set of front guide rails is arranged on the surface of the front chassis, and a set of rear guide rails is arranged on the surface of the rear chassis. The two X-direction loading mechanisms on both sides are fixed at both ends of the front guide rails. The two Y-direction loading mechanisms on both sides are slidably connected to the front guide rails. The two Z-direction loading mechanisms on both sides are slidably connected to the rear guide rails.

[0007] Preferably, the X-direction loading mechanism includes two X-direction fixing plates arranged at intervals. The two X-direction fixing plates are fixed by X-direction guide shafts at the four corners. An X-direction guide plate that moves up and down along the X-direction guide shafts is arranged between the two X-direction fixing plates. An X-direction electric cylinder is also fixed on the surface of the X-direction guide plate. The piston rod of the X-direction electric cylinder is connected with an X-direction hanging ring through an X-direction sensor.

[0008] Preferably, the Y-direction loading mechanism includes a Y-direction fixing plate. Y-direction sliders for slidably connecting with the front guide rails are respectively arranged on both sides of the bottom of the Y-direction fixing plate. A Y-direction electric cylinder is arranged at the bottom of the Y-direction fixing plate. The Y-direction electric cylinder is located inside the front chassis. The piston rod of the Y-direction electric cylinder penetrates upward through the Y-direction fixing plate and extends to the upper surface of the front chassis, and a Y-direction hanging ring is connected to the end of the piston rod of the Y-direction electric cylinder through a Y-direction sensor.

[0009] Preferably, the Z-direction loading mechanism includes two Z-direction fixing plates arranged at intervals. The two Z-direction fixing plates are fixed by Z-direction guide shafts at the four corners. A Z-direction guide plate that slides along the Z-direction guide shafts is arranged between the two Z-direction fixing plates. A Z-direction electric cylinder is also fixed on the surface of the Z-direction guide plate. The piston rod of the Z-direction electric cylinder is connected with a Z-direction hanging ring through a Z-direction sensor.

[0010] Preferably, a connecting piece is arranged at the terminal of the disconnector. The terminals of the disconnector are respectively and flexibly connected to the X-direction loading mechanism, the Y-direction loading mechanism, and the Z-direction loading mechanism through the connecting piece.

[0011] Preferably, the connecting member includes a connecting sleeve, and a connecting groove for placing the disconnector terminal is formed in the connecting sleeve; a connecting pin for fixedly connecting the connecting sleeve and the disconnector terminal is provided, and three connecting plates connected to the X-direction loading mechanism, the Y-direction loading mechanism and the Z-direction loading mechanism are respectively arranged at the end of the connecting pin and on the two end faces of the connecting sleeve, and the three connecting plates are perpendicular to each other in pairs.

[0012] Preferably, an opening and closing test mechanism is further arranged on the surface of the test chassis, and the opening and closing test mechanism is located inside one of the X-direction loading mechanisms.

[0013] Preferably, the opening and closing test mechanism includes a bracket, a cross beam is arranged at the top of the bracket, a fixing plate is clamped on the end face of the cross beam facing the disconnector, a lifting plate that can slide vertically is arranged on the surface of the fixing plate, a lifting frame is arranged on the surface of the lifting plate, a opening and closing cylinder is hinged at the lower part of the lifting frame, and a connecting head is arranged at the end of the piston rod of the opening and closing cylinder.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] In this disconnector testing machine, three-direction tensile forces can be simultaneously applied to both ends of the disconnector, improving the test efficiency, and at the same time, the use scenario of the disconnector on site can be better simulated.

[0016] In this disconnector testing machine, the opening and closing experiment of the disconnector can be carried out simultaneously, and the functions are more abundant.

[0017] In this disconnector testing machine, the connecting plate is flexibly connected to the corresponding loading mechanism through a steel cable. Therefore, the loading mechanism is connected to the connecting sleeve in a flexible connection manner, and the mechanical load is further loaded on the terminal of the disconnector, which can better simulate the connection mode of the on-site cable to the disconnector and improve the authenticity of the test. Description of the Drawings

[0018] Figure 1 It is an isometric view of the disconnector testing machine.

[0019] Figure 2 It is a front view of the disconnector testing machine.

[0020] Figure 3 It is a schematic diagram of the connecting member of the disconnector testing machine.

[0021] Figure 4 It is a schematic diagram of the X-direction loading mechanism of the disconnector testing machine.

[0022] Figure 5 It is a schematic diagram of the Y-direction loading mechanism of the disconnector testing machine.

[0023] Figure 6Schematic diagram of the Z-direction loading mechanism of the disconnector testing machine.

[0024] Figure 7 Schematic diagram of the opening and closing test mechanism of the disconnector testing machine.

[0025] Wherein: 1. Front chassis; 2. Disconnector; 3. Fixed frame; 4. Fixed frame slider; 5. Y-direction loading mechanism; 6. Front guide rail; 7. Rear chassis; 8. Rear guide rail; 9. Z-direction loading mechanism; 10. Connecting piece; 11. Opening and closing test mechanism; 12. X-direction loading mechanism; 13. Connecting pin; 14. Connecting sleeve; 15. Connecting groove; 16. Connecting plate; 17. X-direction handwheel; 18. X-direction lead screw; 19. X-direction fixing plate; 20. X-direction guiding shaft; 21. X-direction guiding plate; 22. X-direction electric cylinder; 23. Base frame; 24. X-direction sensor; 25. X-direction hanging ring; 26. Y-direction hanging ring; 27. Y-direction sensor; 28. Y-direction fixing plate; 29. Y-direction slider; 30. Y-direction electric cylinder; 31. Z-direction handwheel; 32. Z-direction lead screw; 33. Z-direction fixing plate; 34. Z-direction guiding shaft; 35. Z-direction electric cylinder; 36. Y-direction guiding plate; 37. Z-direction slider; 38. Z-direction hanging ring; 39. Z-direction sensor; 40. Bracket; 41. Cross beam; 42. Fixing plate; 43. Guide rail mechanism; 44. Lead screw seat; 45. Lifting handwheel; 46. Lifting plate; 47. Lifting frame; 48. Opening and closing cylinder; 49. Connecting head; 50. X-direction guiding plate. Detailed implementation manners

[0026] Figures 1 to 7 This is the best embodiment of the present utility model. The following further describes the present utility model in conjunction with the attached Figures 1 to 7 drawings.

[0027] As Figures 1 to 2 shown, a disconnector testing machine includes a horizontally arranged front chassis 1. A rear chassis 7 is arranged at the rear side of the front chassis 1. The front chassis 1 and the rear chassis 7 are fixed as a whole. Bottom wheels are respectively arranged at the four corners of the bottom of the front chassis 1. The movement of this disconnector testing machine is realized through the bottom wheels, improving the flexibility.

[0028] Two front guide rails 6 are arranged side by side on the upper surface of the front chassis 1. The two front guide rails 6 are parallel to each other and arranged along the length direction of the front chassis 1. X-direction loading mechanisms 12 are respectively arranged at the end parts of the two front guide rails 6. An opening is arranged on the upper surface of the front chassis 1, and the opening is located between the two front guide rails 6. Two Y-direction loading mechanisms 5 arranged inside the front chassis 1 protrude from the opening on the surface of the front chassis 1 and are arranged on the surface of the front chassis 1. And the two Y-direction loading mechanisms 5 are respectively slidably connected with the two front guide rails 6, thereby adjusting the distance between the two Y-direction loading mechanisms 5.

[0029] There are also two sets of fixed frame sliders 4 arranged between the two Y-direction loading mechanisms 5. The two fixed frame sliders 4 in each set are respectively slidably connected to the front and rear front guide rails 6. An integral fixed frame 3 is respectively arranged on the upper surfaces of the two fixed frame sliders 4 in each set, and the fixed frame 3 is perpendicular to the front guide rail 6. The disconnector 2 to be tested is fixed on the surface of the front chassis 1 through the two fixed frames 3.

[0030] On the upper surface of the rear chassis 7, there are two rear guide rails 8 arranged side by side. The two rear guide rails 8 are parallel to each other and arranged along the length direction of the rear chassis 7. Two Z-direction loading mechanisms 9 are arranged on the upper surface of the rear chassis 7, and both of the two Z-direction loading mechanisms 9 are slidably connected to the rear guide rails 8, so as to adjust the distance between the two Z-direction loading mechanisms 9.

[0031] After the disconnector 2 is fixed on the upper surface of the front chassis 1 through the fixed frame 3, first, connectors 10 are respectively installed at the terminals at both ends of the disconnector 2, and then by adjusting the distances between the two Y-direction loading mechanisms 5 and the distances between the two Z-direction loading mechanisms 9, the connectors 10 at both ends of the disconnector 2 are respectively connected to the X-direction loading mechanism 12, the Y-direction loading mechanism 5 and the Z-direction loading mechanism 9 on the same side. The X-direction loading mechanism 12, the Y-direction loading mechanism 5 and the Z-direction loading mechanism 9 at both ends of the disconnector 2 act simultaneously to load a static mechanical load on the disconnector 2.

[0032] As Figure 3 shown, the connector 10 includes a connecting sleeve 14. The connecting sleeve 14 is of a rectangular body structure, and a connecting groove 15 is opened in the connecting sleeve 14. The connecting groove 15 penetrates through two opposite end faces of the connecting sleeve 14. A connecting pin 13 perpendicular to the connecting groove 15 is provided. The connecting pin 13 penetrates through the connecting sleeve 14 and also penetrates through the connecting groove 15. After separating the connecting pin 13 from the connecting sleeve 14, the terminal of the disconnector 2 is sent into the connecting groove 15, and the connecting groove 15 and the connecting sleeve 14 are fixed through the connecting pin 13.

[0033] On two adjacent end faces of the connecting sleeve 14, there is respectively a connecting plate 16. A third connecting plate 16 is provided at the end of the connecting pin 13. After the connecting pin 13 and the connecting sleeve 14 are fixed, the three connecting plates 16 are respectively located on three end faces of the connecting sleeve 14 that are adjacent to each other in pairs and perpendicular to each other in pairs. Connecting holes are respectively opened in the middle parts of the three connecting plates 16, and the connecting plates 16 are connected to the relative loading mechanism (one of the X-direction loading mechanism 12, the Y-direction loading mechanism 5 and the Z-direction loading mechanism 9) through the connecting holes. The connecting plates 16 are soft-connected to the relative loading mechanism through steel cables. Therefore, the loading mechanism is connected to the connecting sleeve 14 in a soft-connection manner, and further loads the mechanical load on the terminal of the disconnector 2, which can better simulate the connection method of the on-site cable to the disconnector 2 and improve the authenticity of the test.

[0034] AsFigure 4 As shown, the X-direction loading mechanism 12 includes two X-direction fixing plates 19 arranged at intervals, and are respectively fixed at the four corners of the two X-direction fixing plates 19 through X-direction guide shafts 20. An X-direction guide plate 21 is arranged between the two X-direction fixing plates 19, and the four X-direction guide shafts 20 respectively pass through the four corners of the X-direction guide plate 21. An X-direction lead screw 18 is rotatably installed between the two X-direction fixing plates 19. The X-direction lead screw 18 is simultaneously threadedly connected to the X-direction guide plate 21, and an X-direction hand wheel 17 is coaxially arranged at the top of the X-direction lead screw 18. A chassis 23 is arranged at the bottom of the lower X-direction fixing plate 19, and the X-direction loading mechanism 12 is fixed on the surface of the front chassis 1 through the chassis 23.

[0035] A baffle is arranged on the side of the X-direction guide plate 21, and an X-direction electric cylinder 22 is also fixed on the surface of the X-direction guide plate 21. The piston rod of the X-direction electric cylinder 22 penetrates through the baffle on the side of the X-direction guide plate 21, and an X-direction hanging ring 25 is connected to the end of the piston rod of the X-direction electric cylinder 22 through an X-direction sensor 24.

[0036] As Figure 5 shown, the Y-direction loading mechanism 5 includes a Y-direction fixing plate 28. Y-direction sliders 29 are respectively arranged on both sides of the bottom of the Y-direction fixing plate 28. The Y-direction fixing plate 28 is slidably connected to the two front guide rails 6 through the Y-direction sliders 29 on both sides. A Y-direction electric cylinder 30 is arranged at the bottom of the Y-direction fixing plate 28. The piston rod of the Y-direction electric cylinder 30 penetrates upward through the Y-direction fixing plate 28 and extends to the upper surface of the front chassis 1, and a Y-direction hanging ring 26 is connected to the end of the piston rod of the Y-direction electric cylinder 30 through a Y-direction sensor 27.

[0037] As Figure 6 shown, the Z-direction loading mechanism 9 includes two Z-direction fixing plates 33 arranged at intervals, and are respectively fixed at the four corners of the two Z-direction fixing plates 33 through Z-direction guide shafts 34. A Z-direction guide plate 36 is arranged between the two Z-direction fixing plates 33, and the four Z-direction guide shafts 34 respectively pass through the four corners of the Z-direction guide plate 36. A Z-direction lead screw 32 is rotatably installed between the two Z-direction fixing plates 33. The Z-direction lead screw 32 is simultaneously threadedly connected to the Z-direction guide plate 36, and a Z-direction hand wheel 31 is coaxially arranged at the top of the Z-direction lead screw 32. A Z-direction slider 37 is arranged at the bottom of the lower X-direction fixing plate 19, and the Z-direction loading mechanism 9 is slidably connected to the two rear guide rails 8 through the Z-direction slider 37.

[0038] A baffle is arranged on the side of the Z-direction guide plate 36, and a Z-direction electric cylinder 35 is also fixed on the surface of the Z-direction guide plate 36. The piston rod of the Z-direction electric cylinder 35 penetrates through the baffle on the side of the Z-direction guide plate 36, and a Z-direction hanging ring 38 is connected to the end of the piston rod of the Z-direction electric cylinder 35 through a Z-direction sensor 39.

[0039] The X-axis sensor 24, Y-axis sensor 27, and Z-axis sensor 39 are all implemented using commercially available common S-type tension and compression sensors.

[0040] On the surface of the front chassis 1, there is also an opening and closing test mechanism 11 for testing the opening and closing performance of the disconnecting switch 2. The opening and closing test mechanism is located inside one of the X-axis loading mechanisms 12. As Figure 7 shown, the opening and closing test mechanism 11 includes a bracket 40. At the top of the bracket 40, there is a crossbeam 41, and the crossbeam 41 is erected on the upper parts of two front guide rails 6.

[0041] On the end face of the crossbeam 41 facing the disconnecting switch 2, a fixing plate 42 is clamped. On the surface of the fixing plate 42, two guide rail mechanisms 43 are arranged vertically. The two guide rail mechanisms 43 are vertically arranged. The guide rail mechanism 43 is the same as the prior art, including a slide rail and a slider sliding along the slide rail. On the surfaces of the sliders on both sides, a lifting plate 46 is fixed.

[0042] Between the upper and lower parts of the two guide rail mechanisms 43, lead screw seats 44 are respectively arranged. Between the upper and lower lead screw seats 44, a lifting lead screw is arranged. On the upper part of the upper lead screw seat 44, a lifting handwheel 45 coaxially fixed with the lifting lead screw is arranged. On the back of the lifting plate 46, there is a threaded seat, and the lifting lead screw is threadedly connected to the threaded seat. Therefore, by rotating the lifting handwheel 45, the lifting of the lifting plate 46 in the vertical direction can be realized. On the surface of the lifting plate 46, a lifting frame 47 is arranged. At the lower part of the lifting frame 47, an opening and closing air cylinder 48 is hinged. At the end of the piston rod of the opening and closing air cylinder 48, there is a connecting head 49.

[0043] The specific working process and working principle are as follows:

[0044] First, adjust the distance between the two fixing frames 3, and fix the disconnecting switch 2 to be tested on the two fixing frames 3. Then, fix the connecting pieces 10 at the terminals at both ends of the disconnecting switch 2.

[0045] Manually rotate the X-axis handwheels 17 on the two X-axis loading mechanisms 12 to lift and lower the two X-axis guide plates 21, and make the X-axis electric cylinders 22 on both sides face the corresponding connecting pieces 10. Manually adjust the distance between the two Y-axis loading mechanisms 5 to make the Y-axis electric cylinders 30 on both sides face the corresponding connecting pieces 10 upward. Manually adjust the distance between the two Z-axis loading mechanisms 9. Manually rotate the Z-axis handwheels 31 on the two Z-axis loading mechanisms 9 to lift and lower the two Z-axis guide plates 36, and make the Z-axis electric cylinders 35 on both sides face the corresponding connecting pieces 10 upward. Finally, connect the three connecting plates 16 of the connecting piece 10 to the X-axis hanging ring 25, Y-axis hanging ring 26, and Z-axis hanging ring 38 on the same side respectively through steel cables.

[0046] A control console (not shown in the figure) is also provided on the side of the front chassis 1, and the control system of this disconnector testing machine is arranged inside the control console. The control system controls the simultaneous operation of the X-direction electric cylinders 22, Y-direction electric cylinders 30, and Z-direction electric cylinders 35 on both sides of the disconnector 2, and simultaneously applies tensile forces in three directions to both ends of the disconnector 2. While pulling, the tensile forces applied by the X-direction sensors 24, Y-direction sensors 27, and Z-direction sensors 39 on both sides are detected respectively. When the tensile force reaches the required value for the test, the control system controls the corresponding electric cylinders to stop pulling and maintain the current tensile force. After completing the corresponding number of tensile force cycles according to the test requirements of the national standard document, the static mechanical load test of the disconnector 2 is completed.

[0047] When it is necessary to conduct an opening and closing test on the disconnector 2, move the disconnector 2 to one side of the test mechanism 11, then manually rotate the lifting handwheel 45 to lift the opening and closing cylinder 48 to an appropriate height, and connect the connecting head 49 to the operating end of the disconnector 2. Then the control system controls the reciprocating movement of the opening and closing cylinder 48. After completing the corresponding number of opening and closing cycles according to the test requirements of the national standard document, the opening and closing test of the disconnector 2 is completed.

[0048] The above is only a preferred embodiment of the present invention, and it is not a limitation to the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An isolating switch testing machine, comprising a test chassis, an isolating switch (2) to be tested is installed on the surface of the test chassis, and an X-direction loading mechanism (12), a Y-direction loading mechanism (5) and a Z-direction loading mechanism (9) which are connected to the terminals of the isolating switch (2) are provided, and it is characterized in that: An X-direction loading mechanism (12), a Y-direction loading mechanism (5), and a Z-direction loading mechanism (9) are respectively arranged at both ends of the disconnector (2). The X-direction loading mechanisms (12) on both sides are fixed at both ends of the test chassis, the Y-direction loading mechanisms (5) on both sides are arranged at both ends of the disconnector (2) with adjustable spacing, and the Z-direction loading mechanisms (9) on both sides are arranged on the side of the disconnector (2) with adjustable spacing.

2. The disconnector testing machine according to claim 1, characterized in that: The test chassis includes a front chassis (1) and a rear chassis (7) fixed together. A set of front guide rails (6) is arranged on the surface of the front chassis (1), and a set of rear guide rails (8) is arranged on the surface of the rear chassis (7). The X-direction loading mechanisms (12) on both sides are fixed at both ends of the front guide rails (6), the Y-direction loading mechanisms (5) on both sides are slidably connected to the front guide rails (6), and the Z-direction loading mechanisms (9) on both sides are slidably connected to the rear guide rails (8).

3. The disconnector testing machine according to claim 1 or 2, characterized in that: The X-direction loading mechanism (12) includes two X-direction fixing plates (19) arranged at intervals. The two X-direction fixing plates (19) are fixed by X-direction guide shafts (20) at the four corners. An X-direction guide plate (21) that moves up and down along the X-direction guide shaft (20) is arranged between the two X-direction fixing plates (19). An X-direction electric cylinder (22) is also fixed on the surface of the X-direction guide plate (21). The piston rod of the X-direction electric cylinder (22) is connected with an X-direction hanging ring (25) through an X-direction sensor (24).

4. The disconnector testing machine according to claim 2, wherein: The Y-direction loading mechanism (5) includes a Y-direction fixing plate (28). Y-direction sliders (29) for slidably connecting with the front guide rails (6) are respectively arranged on both sides of the bottom of the Y-direction fixing plate (28). A Y-direction electric cylinder (30) is arranged at the bottom of the Y-direction fixing plate (28). The Y-direction electric cylinder (30) is located inside the front chassis (1). The piston rod of the Y-direction electric cylinder (30) penetrates upward through the Y-direction fixing plate (28) and extends to the upper surface of the front chassis (1), and a Y-direction hanging ring (26) is connected to the end of the piston rod of the Y-direction electric cylinder (30) through a Y-direction sensor (27).

5. The disconnector testing machine according to claim 1 or 2, characterized in that: The Z-direction loading mechanism (9) includes two Z-direction fixing plates (33) arranged at intervals. The two Z-direction fixing plates (33) are fixed by Z-direction guide shafts (34) at the four corners. A Z-direction guide plate (36) that slides along the Z-direction guide shaft (34) is arranged between the two Z-direction fixing plates (33). A Z-direction electric cylinder (35) is also fixed on the surface of the Z-direction guide plate (36). The piston rod of the Z-direction electric cylinder (35) is connected with a Z-direction hanging ring (38) through a Z-direction sensor (39).

6. The disconnector testing machine according to claim 1, wherein: A connector (10) is arranged at the terminal of the disconnector (2). The terminals of the disconnector (2) are respectively soft-connected to the X-direction loading mechanism (12), the Y-direction loading mechanism (5), and the Z-direction loading mechanism (9) through the connector (10).

7. The disconnector testing machine according to claim 6, characterized in that: The connecting member (10) includes a connecting sleeve (14), and a connecting groove (15) for placing the terminals of the disconnector (2) is formed in the connecting sleeve (14); a connecting pin (13) for fixedly connecting the connecting sleeve (14) and the terminals of the disconnector (2) is provided, and three connecting plates (16) connected to the X-direction loading mechanism (12), the Y-direction loading mechanism (5) and the Z-direction loading mechanism (9) are respectively arranged at the end of the connecting pin (13) and on the two end faces of the connecting sleeve (14), and the three connecting plates (16) are perpendicular to each other in pairs.

8. The disconnector testing machine according to claim 1, characterized in that: An opening and closing test mechanism (11) is further arranged on the surface of the test chassis, and the opening and closing test mechanism (11) is located inside one of the X-direction loading mechanisms (12).

9. The disconnector testing machine according to claim 8, wherein: The opening and closing test mechanism (11) includes a bracket (40), a cross beam (41) is arranged at the top of the bracket (40), a fixing plate (42) is clamped on the end face of the cross beam (41) facing the disconnector (2), a lifting plate (46) capable of vertically sliding is arranged on the surface of the fixing plate (42), a lifting frame (47) is arranged on the surface of the lifting plate (46), an opening and closing air cylinder (48) is hinged to the lower part of the lifting frame (47), and a connecting head (49) is arranged at the end of the piston rod of the opening and closing air cylinder (48).

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