A GIS common box casing test tool

Abstract

The invention relates to the technical field of test tooling, and proposes a GIS common box bushing test tooling, which can manually operate an insulating pull rod on the ground through a common box test bushing to change the opening and closing state of a conductor in the GIS and the common box test bushing, and at the same time, a conductive pull rod is arranged on a single-phase test transition tooling, the conductive pull rod is pushed into the single-phase test transition tooling, and wired on the outer side of the conductive pull rod, so as to realize the test of the short-circuit or wiring state of each phase GIS, meet the requirements of on-site GIS test, and at the same time, a follow-up adjustment can be formed between a moving contact and the conductive pull rod, so as to improve the convenience of test tooling operation and the richness of test modes, comprising a common box test bushing and a plurality of single-phase test transition tools, the common box test bushing is connected with a common box busbar, the plurality of single-phase test transition tools all include four-way pipes, the plurality of four-way pipes are connected with the common box busbar, the plurality of four-way pipes are installed with fixed connection seats, and the plurality of fixed connection seats are slidably connected with moving contacts.

Description

Technical Field

[0001] The invention relates to the technical field of test tooling, and in particular to a GIS common box casing test tooling. Background Art

[0002] As we all know, GIS is a gas-insulated switchgear. A GIS common box bushing test tool is a tool for auxiliary testing and detection of gas-insulated switchgear.

[0003] GIS is generally composed of circuit breakers, disconnectors, grounding switches, current transformers, voltage transformers, lightning arresters, busbars, connectors and outgoing terminals. These devices or components are all enclosed in a metal grounded casing and filled with SF6 insulating gas at a certain pressure. It has the advantages of high safety, high reliability, miniaturization, strong anti-interference ability, small footprint, and no environmental impact. One end of the GIS is connected to the transformer and the other end is connected to the grid incoming line. If the transformer and GIS are directly connected through an oil-SF6 bushing, relevant tests cannot be carried out directly on the GIS. It is necessary to add a set of test fixtures to connect the GIS equipment to the test fixture bushing for pressure testing.

[0004] At present, the commonly used test tool is to install three bushings on the three-phase busbar for pressurization. This technology has the following disadvantages: 1. The installation of the three-phase bushing needs to consider the insulation distance between each other, and the surrounding distance requirements are relatively large; 2. The workload of installing the three-phase bushing on site is large; 3. The bushing is generally installed at a high height, and wiring is required during the test. During this process, multiple high-altitude operations are required to change the wiring method, which is relatively dangerous. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a GIS common box bushing test tooling, which can change the opening and closing states of the conductor in the GIS and the common box test bushing by manually operating an insulating pull rod on the ground through a common box test bushing. At the same time, a conductive pull rod is arranged on the single-phase test transition tooling, the conductive pull rod is pushed into the single-phase test transition tooling, and wired on the outside of the conductive pull rod to realize the short-circuit or wiring state test of each phase of GIS, thereby meeting the on-site GIS test requirements. At the same time, a follow-up adjustment can be formed between the moving contact and the conductive pull rod to improve the convenience of the test tooling operation and the richness of the test mode.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a GIS common box bushing test tool, including a common box test bushing, and also including multiple single-phase test transition tooling, the common box test bushing is connected to a common box busbar, multiple single-phase test transition toolings all include four-way pipes, multiple four-way pipes are connected to the common box busbar, multiple four-way pipes are installed with fixed connection seats, multiple fixed connection seats are slidably connected with moving contacts, and multiple fixed connection seats are provided with contact seat conductors matching the moving contacts, multiple four-way pipes are installed with split-phase busbars, and multiple split-phase busbars are installed with split-phase busbars. The phase busbars are used to connect the GIS for testing, static contacts are installed between the multiple phase busbars and the multiple four-way tubes, the multiple static contacts are matched with the multiple moving contacts, the front ends of the multiple four-way tubes are installed with pulling assemblies, the multiple pulling assemblies are matched with the multiple moving contacts, the top ends of the multiple four-way tubes are fixedly connected with top cover plates, the multiple top cover plates are installed with first end shielding covers, the multiple first end shielding covers are slidably connected with conductive pull rods, and multi-state linkage assemblies are installed on the multiple four-way tubes, and the multi-state linkage assemblies are used for the linkage between the pulling assemblies and the conductive pull rods.

[0007] Preferably, the plurality of pulling assemblies all include a front cover plate, the plurality of front cover plates are all equipped with a second end shielding cover, the plurality of moving contacts are respectively slidably connected to the plurality of second end shielding covers, the plurality of front cover plates are respectively fixedly connected to the front ends of the plurality of four-way tubes, the plurality of moving contacts are respectively equipped with an end shielding ball cover at the front ends, and the plurality of end shielding ball covers are respectively equipped with insulating pull rods at the front ends.

[0008] Preferably, multiple multi-state linkage groups all include suspension brackets, multiple suspension brackets are fixedly connected to multiple four-way pipes respectively through two assembly bolts, multiple suspension brackets are installed with intermediate shafts, multiple intermediate shafts are installed with driving frames and driven frames, multiple driving frames are respectively connected to multiple moving contacts, and multiple driven frames are respectively connected to multiple conductive pull rods.

[0009] Preferably, the plurality of intermediate shaft members all include shaft sleeves, the plurality of suspension brackets are provided with rotation ports, the plurality of shaft sleeves are respectively rotatably connected in the plurality of rotation ports, the plurality of shaft sleeves are fixedly connected with side shaft cylinders, the plurality of side shaft cylinders are rotatably connected with synchronous gears, the plurality of synchronous gears are meshed with driving end gears and driven end gears, the plurality of driving end gears are respectively connected with the plurality of driving frames, the plurality of driven end gears are respectively connected with the plurality of driven frames, and a rotation limit assembly is installed in the overall structure formed by the shaft sleeves and the side shaft cylinders.

[0010] Preferably, the rotation limit assembly includes a step limit frame and a step limit frame, the step limit frame and the step limit frame are respectively slidably connected in the shaft sleeve and the side shaft sleeve, the step limit frame is used for rotation limitation between the shaft sleeve and the suspension bracket, the step limit frame and the step limit frame are both provided with annular grooves, rotating rings are rotatably connected in the two annular grooves, and pop-up springs are fixedly connected in the two rotating rings, storage ring grooves are both provided in the shaft sleeve and the side shaft sleeve, and the two pop-up springs are respectively fixedly connected in the two storage ring grooves, and a synchronous drive assembly is installed in the shaft sleeve, and the synchronous drive assembly is used for relative driving of the step limit frame and the step limit frame.

[0011] Preferably, the synchronous drive assembly includes a synchronous frame, which is slidably connected in the shaft sleeve, and a side drive rod is rotatably connected to the synchronous frame, and the side drive rod is hinged with a side smooth frame, and the side smooth frame is slidably connected in the shaft sleeve, and the synchronous frame and the side smooth frame are both fixedly connected with elastic springs, and the two elastic springs are respectively fixedly connected to the step limit frame and the step limit frame.

[0012] Preferably, a two-way limit piece is rotatably connected to the synchronous frame, a hinge seat is fixedly connected to the shaft sleeve, the two-way limit piece is rotatably connected in the hinge seat, an eccentric rod is fixedly connected in the two-way limit piece, a transmission rod is rotatably connected to the eccentric rod, the transmission rod is hinged to the synchronous frame, and two limit planes are arranged on the two-way limit piece.

[0013] Preferably, the driving frame and the driven frame are both provided with connecting holes, and through shafts are provided in the two connecting holes, and the two through shafts are fixedly connected to the moving contact and the conductive pull rod respectively.

[0014] Preferably, the bottom end of the common box test bushing is equipped with a bushing mounting base, and the common box busbar is equipped with a busbar mounting base.

[0015] Preferably, the common box test bushing adopts an SF6-air bushing, the common box test bushing is used for pressurization during GIS testing, and a contact seat shielding cover is fixedly connected to the fixed connecting seat.

[0016] Compared with the prior art, the present invention provides a GIS common box casing test tool, which has the following beneficial effects:

[0017] (1) In the present invention, a connection structure with the GIS to be tested is formed through the design of a single-phase test transition tooling. During the test, an insulating pull rod is manually operated on the ground to change the opening and closing state of the conductor in the GIS and the common box test bushing. At the same time, a conductive pull rod is set on the single-phase test transition tooling, the conductive pull rod is pushed into the single-phase test transition tooling, and the wires are connected on the outside of the conductive pull rod to achieve the establishment of the short-circuit state or the wiring state of each phase of the GIS, thereby meeting the requirements of the on-site GIS test.

[0018] (2) In the present invention, through the design of a multi-state linkage component, the conductive pull rod can follow the pulling of the moving contact to form a follow-up movement, and the direction in which the conductive pull rod follows the moving contact can be adjusted, so as to improve the convenience of operating the test tooling and the richness of the test mode.

[0019] (3) In the present invention, through the cooperation of the common box test bushing and the common box busbar, the installation and access of multiple single-phase test transition tooling is formed, which facilitates the access test of multiple GIS and improves the practicality of the GIS common box bushing test tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0022] Figure 3 For the present invention Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0023] Figure 4 For the present invention Figure 1 A schematic diagram of the local enlarged structure at C in the middle;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the four-way pipe, the suspension bracket and the driving frame of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the shaft sleeve, the two-way limiter and the eccentric rod of the present invention;

[0026] Figure 7 It is a schematic diagram of the exploded three-dimensional structure of the driving frame, the driven frame and the driven end gear cooperating with each other in the present invention;

[0027] Figure 8 It is a three-dimensional structural diagram of the shaft sleeve, synchronous gear and ejection spring of the present invention;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the synchronous frame, the side smooth frame and the elastic spring of the present invention;

[0029] Fig.10 It is a cross-sectional three-dimensional structural schematic diagram of the synchronization frame, the side drive rod and the side smooth frame of the present invention;

[0030] Fig.11 It is a schematic diagram of the three-dimensional structure of the suspension bracket of the present invention;

[0031] Fig.12 It is a schematic diagram of the three-dimensional structure of the four-way pipe, the suspension bracket and the assembly bolts of the present invention;

[0032] Fig.13 It is a schematic diagram of the three-dimensional structure of the shaft sleeve, side shaft sleeve and synchronous gear of the present invention;

[0033] Fig.14 It is a schematic diagram of the three-dimensional structure of the synchronous frame, the side drive rod and the transmission rod of the present invention;

[0034] Fig.15 It is a cross-sectional structural diagram of the cooperation of the four-way pipe, the fixed connection seat and the moving contact of the present invention.

[0035] In the figure: 1. Common box test bushing; 2. Common box busbar; 3. Cross-tube; 4. Fixed connection seat; 5. Moving contact; 6. Contact seat conductor; 7. Phase busbar; 8. Static contact; 9. Terminal shielding ball cover; 10. First terminal shielding cover; 11. Conductive pull rod; 12. Front cover; 13. Second terminal shielding cover; 14. Insulating pull rod; 15. Suspension bracket; 16. Assembly bolts; 17. Driving frame; 18. Driven frame; 19. Shaft sleeve; 20. Transfer port; 21. Side shaft sleeve; 22. Synchronous gear; 23. Driving end gear; 24. Driven end gear; 25. Step limit frame; 26. Step limit frame; 27. Pop-up spring; 28. Rotating ring; 29. ​​Synchronous frame; 30. Side driving rod; 31. Side smooth frame; 32. Elastic spring; 33. Bidirectional limit piece; 34. Articulated seat; 35. Eccentric rod; 36. Transmission rod; 37. Limiting plane; 38. Strip hole; 39. Through shaft; 40. Bushing mounting base; 41. Busbar mounting base; 42. Contact seat shielding cover. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example: See Figure 1-Figure 15A GIS common box bushing test tooling includes a common box test bushing 1 and a plurality of single-phase test transition toolings. The common box test bushing 1 is connected to a common box busbar 2. Through the cooperation of the common box test bushing 1 and the common box busbar 2, the installation and access of a plurality of single-phase test transition toolings are formed, which is convenient for the access test of a plurality of GIS and improves the practicality of the GIS common box bushing test tooling. The plurality of single-phase test transition toolings include a four-way pipe 3. The plurality of four-way pipes 3 are connected to the common box busbar 2. A fixed connection seat 4 is installed in the plurality of four-way pipes 3. A moving contact 5 is slidably connected in the plurality of fixed connection seats 4. A contact seat conductor 6 matching the moving contact 5 is arranged in the plurality of fixed connection seats 4. A contact seat shielding cover 42 is fixedly connected to the fixed connection seat 4. The plurality of four-way pipes 3 are installed with a phase busbar 7. The plurality of phase busbars 7 are used to connect the GIS to be tested. The plurality of phase busbars 7 are respectively connected to a plurality of Static contacts 8 are installed between the four-way tubes 3, and multiple static contacts 8 are matched with multiple moving contacts 5 respectively. Pull assemblies are installed at the front ends of the multiple four-way tubes 3, and multiple pull assemblies are matched with multiple moving contacts 5 respectively. The top ends of the multiple four-way tubes 3 are fixedly connected with top cover plates, and first end shielding covers 10 are installed on the multiple top cover plates. Multiple first end shielding covers 10 are slidably connected with conductive pull rods 11. Through the design of single-phase test transition tooling, an access structure with the GIS to be tested is formed. During the test, the insulating pull rod 14 is manually operated on the ground to change the opening and closing state of the conductor in the GIS and the common box test bushing 1. At the same time, a conductive pull rod 11 is set on the single-phase test transition tooling, and the conductive pull rod 11 is pushed into the single-phase test transition tooling, and connected on the outside of the conductive pull rod 11 to achieve the establishment of the short-circuit state or the wiring state of each phase GIS, meeting the on-site GIS test requirements.

[0038] It should be further explained that a plurality of four-way tubes 3 are each equipped with a multi-state linkage component, and the multi-state linkage component is used for the linkage between the pulling component and the conductive pull rod 11, and the plurality of pulling components each include a front cover plate 12, and a second end shielding cover 13 is installed on the plurality of front cover plates 12, and the plurality of moving contacts 5 are respectively slidably connected with the plurality of second end shielding covers 13, and the plurality of front cover plates 12 are respectively fixedly connected to the front ends of the plurality of four-way tubes 3, and a terminal shielding ball cover 9 is installed at the front ends of the plurality of moving contacts 5, and an insulating pull rod 14 is installed at the front ends of the plurality of terminal shielding ball covers 9, and the plurality of multi-state linkage groups each include a suspension bracket 15, and the plurality of suspension brackets 15 are respectively fixedly connected with the plurality of four-way tubes 3 by two assembly bolts 16, and an intermediate shaft is installed in the plurality of suspension brackets 15, and a driving frame 17 and a driven frame 18 are installed on the plurality of intermediate shafts, and the plurality of driving frames 17 are respectively connected with the plurality of moving contacts 5, and the plurality of The driven frame 18 is respectively connected to multiple conductive pull rods 11, multiple intermediate shaft members each include a shaft sleeve 19, multiple suspension brackets 15 are each provided with a transfer opening 20, multiple shaft sleeves 19 are respectively rotatably connected in the multiple transfer openings 20, multiple shaft sleeves 19 are each fixedly connected with a side shaft cylinder 21, multiple side shaft cylinders 21 are rotatably connected with a synchronous gear 22, multiple synchronous gears 22 are meshed with a driving end gear 23 and a driven end gear 24, multiple driving end gears 23 are respectively connected to multiple driving frames 17, multiple driven end gears 24 are respectively connected to multiple driven frames 18, the driving frame 17 and the driven frame 18 are each provided with a strip connection hole 38, two strip connection holes 38 are each provided with a through shaft 39, the two through shafts 39 are respectively fixedly connected to the moving contact 5 and the conductive pull rod 11, forming a transmission connection structure in which the driving frame 17 and the driven frame 18 are respectively connected to the moving contact 5 and the conductive pull rod 11.

[0039] It should be further explained that a rotation limit assembly is installed in the integral structure formed by the shaft sleeve 19 and the side shaft cylinder 21, and the rotation limit assembly includes a step limit frame 25 and a step limit frame 26. The step limit frame 25 and the step limit frame 26 are respectively slidably connected in the shaft sleeve 19 and the side shaft cylinder 21. The step limit frame 25 is used for rotation limit between the shaft sleeve 19 and the suspension bracket 15. The step limit frame 25 and the step limit frame 26 are both provided with annular grooves, and a rotating ring 28 is rotatably connected in the two annular grooves. The two rotating rings 28 are fixedly connected to the pop-up spring 2 7, the shaft sleeve 19 and the side shaft sleeve 21 are both provided with storage ring grooves, and two pop-up springs 27 are respectively fixedly connected in the two storage ring grooves. A synchronous drive assembly is installed in the shaft sleeve 19, and the synchronous drive assembly is used for the relative drive of the step limit frame 25 and the step limit frame 26. The synchronous drive assembly includes a synchronous frame 29, which is slidably connected in the shaft sleeve 19, and a side drive rod 30 is rotatably connected to the synchronous frame 29, and the side drive rod 30 is hinged with a side smooth frame 31, and the side smooth frame 31 is slidably connected in the shaft sleeve 19, and the synchronous frame 29 and the side smooth frame 31 are both fixed. The two elastic springs 32 are fixedly connected to the step limit frame 25 and the step limit frame 26 respectively. Through the design of the multi-state linkage component, the conductive pull rod 11 is pulled along with the moving contact 5 to form a follow-up movement, and the direction in which the conductive pull rod 11 follows the moving contact 5 can be adjusted to improve the convenience of the test tooling operation and the richness of the test mode. The synchronous frame 29 is rotatably connected with a bidirectional limit piece 33, and the shaft sleeve 19 is fixedly connected with an articulated seat 34. The bidirectional limit piece 33 is rotatably connected in the articulated seat 34, and the bidirectional limit piece 33 is fixed in the articulated seat 34. An eccentric rod 35 is fixedly connected, and a transmission rod 36 is rotatably connected to the eccentric rod 35. The transmission rod 36 is hinged to the synchronous frame 29, and two limiting planes 37 are arranged on the bidirectional limiting member 33, which are convenient for driving the synchronous frame 29 and limiting the state. The bottom end of the common box test bushing 1 is equipped with a bushing mounting base 40 to achieve support and installation of the common box test bushing 1. The common box busbar 2 is equipped with a busbar mounting base 41 to achieve support and installation of the common box busbar 2. The common box test bushing 1 adopts SF6-air bushing, and the common box test bushing 1 is used for pressurization during GIS testing.

[0040] To sum up, the working principle of the GIS common box bushing test tooling is that when in use, the common box test bushing 1 is first installed and fixed on the bushing installation base 40, and the tail of the common box test bushing 1 is connected to multiple single-phase test transition tooling through the common box busbar 2. The connection is pre-installed in the factory and then transported to the test site. The installation work at the test site is relatively small. The single-phase test transition tooling is connected to the test interface of the GIS to be tested through the phase busbar 7. After the connection is completed, the conductive pull rod 11 is connected to the outside. During the test, the insulating pull rod 14 on the single-phase test transition tooling is manually operated to adjust the opening and breaking modes of the bushing and the conductor of each phase of the GIS, and the conductive pull rod 11 is pushed into the contact seat conductor 6 to achieve the establishment of the short-circuit state or the wiring state of each phase of the GIS.

[0041] Furthermore, due to the matching of the multi-state linkage components, the conductive pull rod 11 can be formed to follow the movement of the moving contact 5, as shown in the attached Figure 2 As shown in FIG. 1 , when the bidirectional stopper 33 is rotated relative to the hinge seat 34 to adjust the eccentric rod 35 to a state where the synchronous frame 29 is away from the synchronous frame 29, the synchronous frame 29 will be pulled out relative to the shaft sleeve 19 under the pulling action of the transmission rod 36, as shown in FIG. Fig.10According to the principle shown in the figure, when the synchronous frame 29 is pulled out by traction, on the one hand, the step limit frame 25 is pulled by the elastic spring 32 between the step limit frame 25 and the synchronous frame 29, and along with the formation of the pulling, the pop-up spring 27 fixed to the shaft sleeve 19 is further compressed, so that the step limit frame 25 is in contact with and pressed relative to the suspension bracket 15. In the pressed state, due to the relative friction between the step limit frame 25 and the suspension bracket 15, the synchronous frame 29 can be controlled to form a rotation limit relative to the suspension bracket 15, and then the shaft sleeve 19 is formed. The rotation limit is formed relative to the suspension bracket 15, and at the same time, the side smooth frame 31 is prompted to move relative to the shaft sleeve 19 under the transmission action of the side drive rod 30. The pulling effect of the step limit frame 26 is reduced under the transmission effect of the elastic spring 32 between the frames 26. After the pulling effect of the step limit frame 26 is reduced, the pulling effect of the pop-up spring 27 connected to the side shaft cylinder 21 is reduced, thereby reducing the compression degree of the pop-up spring 27 and the corresponding compression amount, so that the step limit frame 26 is separated from the synchronous gear 22. In this state, when the moving contact 5 is pulled out by the insulating pull rod 14, the driving frame 17 will rotate forward relative to the shaft sleeve 19. Under the transmission effect of the synchronous gear 22, the driving end gear 23 and the driven end gear 24, the driven frame 18 rotates upward relative to the shaft sleeve 19, so that the conductive pull rod 11 is pulled upward, that is, the moving contact 5 and the moving contact 5 are separated. When the contacts 5 are separated, the conductive pull rod 11 and the contact seat conductor 6 are also separated. When the moving contact 5 is pushed backward by the insulating pull rod 14, the moving contact 5 will form relative contact with the static contact 8. At the same time, the conductive pull rod 11 will also be pushed downward to form a contact with the contact seat conductor 6. In this state, it is suitable for the synchronous connection test of the static contact 8 relative to the moving contact 5 and the conductive pull rod 11 relative to the contact seat conductor 6. When the rotating two-way limit member 33 reduces the pulling effect on the synchronous frame 29, the relative separation of the step limit frame 25 and the suspension frame 15 will be achieved, that is, the rotation limit effect of the shaft sleeve 19 relative to the suspension frame 15 fails, and the step limit frame 26 forms a relative contact with the synchronous gear 22. and compression to achieve the rotation limit of the synchronous gear 22. In this state, when the moving contact 5 is pulled out by the insulating pull rod 14, since the relative angle between the driving frame 17 and the driven frame 18 is fixed, the conductive pull rod 11 will form a relative height reduction, thereby achieving the contact and access of the conductive pull rod 11 relative to the contact seat conductor 6. Conversely, when the moving contact 5 is pushed backward by the insulating pull rod 14, due to the integrated transmission effect of the driving frame 17 and the driven frame 18, the conductive pull rod 11 will form a relative height increase, thereby achieving the separation of the conductive pull rod 11 relative to the contact seat conductor 6. In this state, it is suitable for the separate access test of the static contact 8 relative to the moving contact 5, or the separate access test of the conductive rod 11 relative to the contact seat conductor 6.

[0042] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A GIS common box casing test tool, comprising a common box test casing (1), characterized in that: The invention also comprises a plurality of single-phase test transition fixtures, wherein the common box test bushing (1) is connected to a common box busbar (2), and the plurality of single-phase test transition fixtures each comprise a four-way pipe (3), and the plurality of four-way pipes (3) are connected to the common box busbar (2), and the plurality of four-way pipes (3) are each installed with a fixed connection seat (4), and the plurality of fixed connection seats (4) are each slidably connected with a moving contact (5), and the plurality of fixed connection seats (4) are each provided with a contact seat conductor (6) matching the moving contact (5), and the plurality of four-way pipes (3) are each installed with a phase busbar (7), and the plurality of phase busbars (7) are each used for connecting a GIS under test, and the plurality of phase busbars (7) are each used for connecting a GIS under test, and the plurality of phase busbars (7) are each provided with a phase busbar (7) matching the moving contact (5) and a phase busbar (6) matching the moving contact (5 ... Static contacts (8) are installed between the wires (7) and the plurality of four-way tubes (3), the plurality of static contacts (8) are matched with the plurality of moving contacts (5), the front ends of the plurality of four-way tubes (3) are installed with pulling assemblies, the plurality of pulling assemblies are matched with the plurality of moving contacts (5), the top ends of the plurality of four-way tubes (3) are fixedly connected with top cover plates, the plurality of top cover plates are installed with first end shielding covers (10), the plurality of first end shielding covers (10) are slidably connected with conductive pull rods (11), and the plurality of four-way tubes (3) are installed with multi-state linkage assemblies, the multi-state linkage assemblies are used for linkage between the pulling assemblies and the conductive pull rods (11).

2. A GIS common casing test tool according to claim 1, characterized in that: The plurality of pulling assemblies each comprise a front cover plate (12), a second end shielding cover (13) is installed on the plurality of front cover plates (12), the plurality of moving contacts (5) are respectively slidably connected to the plurality of second end shielding covers (13), the plurality of front cover plates (12) are respectively fixedly connected to the front ends of the plurality of four-way tubes (3), the front ends of the plurality of moving contacts (5) are each installed with an end shielding ball cover (9), and the front ends of the plurality of end shielding ball covers (9) are each installed with an insulating pull rod (14).

3. A GIS common box casing test tool according to claim 2, characterized in that: The plurality of polymorphic linkage groups each comprise a suspension bracket (15), the plurality of suspension brackets (15) each being fixedly connected to the plurality of four-way pipes (3) by two assembly bolts (16), the plurality of suspension brackets (15) each being installed with an intermediate shaft, the plurality of intermediate shafts each being installed with a driving frame (17) and a driven frame (18), the plurality of driving frames (17) each being connected to the plurality of moving contacts (5), and the plurality of driven frames (18) each being connected to the plurality of conductive pull rods (11).

4. A GIS common casing test tool as claimed in claim 3, characterized in that: The plurality of intermediate shaft members each comprise a shaft sleeve (19), the plurality of suspension brackets (15) each have a rotation connection opening (20), the plurality of shaft sleeves (19) are rotatably connected in the plurality of rotation connection openings (20), the plurality of shaft sleeves (19) are each fixedly connected to a side shaft sleeve (21), the plurality of side shaft sleeves (21) are each rotatably connected to a synchronous gear (22), the plurality of synchronous gears (22) are each meshed with a driving end gear (23) and a driven end gear (24), the plurality of driving end gears (23) are respectively connected to the plurality of driving frames (17), the plurality of driven end gears (24) are respectively connected to the plurality of driven frames (18), and a rotation limit assembly is installed in the integral structure formed by the shaft sleeve (19) and the side shaft sleeve (21).

5. A GIS common casing test tool as claimed in claim 4, characterized in that: The rotation limiting assembly comprises a step limiting frame (25) and a step limiting frame (26). The step limiting frame (25) and the step limiting frame (26) are respectively slidably connected in the shaft sleeve (19) and the side shaft sleeve (21). The step limiting frame (25) is used for rotation limiting between the shaft sleeve (19) and the suspension bracket (15). The step limiting frame (25) and the step limiting frame (26) are both provided with an annular groove. A rotating ring (28) is rotatably connected in the two annular grooves. The two rotating rings (28) are both fixedly connected with a pop-up spring (27). The shaft sleeve (19) and the side shaft sleeve (21) are both provided with a storage ring groove. The two pop-up springs (27) are respectively fixedly connected in the two storage ring grooves. A synchronous driving assembly is installed in the shaft sleeve (19). The synchronous driving assembly is used for relative driving of the step limiting frame (25) and the step limiting frame (26).

6. A GIS common casing test tool according to claim 5, characterized in that: The synchronous drive assembly comprises a synchronous frame (29), the synchronous frame (29) is slidably connected in the shaft sleeve (19), a side driving rod (30) is rotatably connected to the synchronous frame (29), the side driving rod (30) is hingedly connected to a side smooth frame (31), and the side smooth frame (31) is slidably connected in the shaft sleeve (19), the synchronous frame (29) and the side smooth frame (31) are both fixedly connected to elastic springs (32), and the two elastic springs (32) are respectively fixedly connected to the step limit frame (25) and the step limit frame (26).

7. A GIS common casing test tool according to claim 6, characterized in that: A bidirectional limiting member (33) is rotatably connected to the synchronous frame (29), a hinge seat (34) is fixedly connected to the shaft sleeve (19), the bidirectional limiting member (33) is rotatably connected in the hinge seat (34), an eccentric rod (35) is fixedly connected in the bidirectional limiting member (33), a transmission rod (36) is rotatably connected to the eccentric rod (35), the transmission rod (36) is hinged to the synchronous frame (29), and two limiting planes (37) are provided on the bidirectional limiting member (33).

8. The GIS common casing test tool according to claim 7 is characterized in that: The driving frame (17) and the driven frame (18) are both provided with connecting holes (38), and through shafts (39) are both provided in the two connecting holes (38). The two through shafts (39) are respectively fixedly connected to the moving contact (5) and the conductive pull rod (11).

9. A GIS common casing test tool as claimed in claim 8, characterized in that: The bottom end of the common box test bushing (1) is equipped with a bushing installation base (40), and the common box busbar (2) is equipped with a busbar installation base (41).

10. A GIS common casing test tool as claimed in claim 9, characterized in that: The common box test bushing (1) adopts an SF6-air bushing, and the common box test bushing (1) is used for pressurization during GIS testing. A contact seat shielding cover (42) is fixedly connected to the fixed connection seat (4).

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