busbar structure

Abstract

The utility model belongs to high -voltage electric appliance technical field discloses a bus structure, including main casing, static plug -in subassembly, dynamic plug -in subassembly and operating assembly. Operating assembly includes operating lever and operating joint, the bus structure in main casing is provided with sealed passage, operating joint is in first position, operating joint is sealed connection with sealed passage, operating joint is in second position, operating joint is connected with dynamic plug -in subassembly, operating lever is sealed connection with sealed passage, so that the bus structure can be in the case of not opening the cover, operating lever is operated, drive dynamic plug -in subassembly to move through operating joint to realize the switching -on and -off of bus structure, convenient operation, in addition, operating lever and operating joint are detachably connected through fastener, so that operating lever can be detached after the switching -on and -off, avoid misoperation and avoid electric shock, first sealing element is arranged between operating lever and operating joint, reduces the probability of the gas in main casing leaking through fastener.

Description

Technical Field

[0001] This utility model relates to the field of high voltage electrical technology, and in particular to a busbar structure. Background Technology

[0002] Busbar structures are commonly used in high-voltage power equipment. When high-voltage power equipment needs maintenance or withstand voltage tests, the busbar structure needs to be disconnected. Traditionally, disconnecting a busbar structure requires first opening the cover plate, then separating the two conductors by removing screws. The circuit is then closed after maintenance or withstand voltage tests. This busbar structure's disconnection and closure operation is cumbersome. Before opening the cover, sulfur hexafluoride gas inside the busbar equipment must be recovered, then the cover plate must be opened, and the disconnection operation is performed. This makes the operation complex, time-consuming, and labor-intensive. Furthermore, the busbar structure needs to be refilled with gas after closure, further increasing maintenance costs. Utility Model Content

[0003] The purpose of this utility model is to provide a busbar structure that does not require opening the cover, facilitates opening and closing operations, and reduces costs.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] Busbar structure, including:

[0006] The main housing has sealing channels on its side walls;

[0007] A static plug-in assembly is disposed on one side inside the main housing;

[0008] A movable plug-in assembly is disposed on the other side inside the main housing;

[0009] An operating assembly includes an operating lever and an operating connector, wherein the operating lever and the operating connector are detachably connected by fasteners;

[0010] The operating connector has a first position and a second position. When the operating connector is in the first position, it is sealed to the sealing channel. When the operating connector is in the second position, it is connected to the movable plug assembly, and the operating rod is sealed to the sealing channel. One end of the operating rod inside the main housing is connected to the operating connector, and the other end of the operating rod extends outside the main housing. The operating rod can drive the operating connector to rotate, and the operating connector drives the movable plug assembly to move closer to or away from the stationary plug assembly, so that the movable plug assembly and the stationary plug assembly engage or disengage.

[0011] As an alternative, a first seal is provided between the operating lever and the operating connector, which is circumferentially disposed on the fastener.

[0012] As an optional solution, the fastener is a fastening screw; the end of the operating rod opposite to the operating joint is provided with a countersunk hole, the bottom of the countersunk hole is provided with a through hole, the operating joint is provided with a threaded hole, and the fastening screw is located in the countersunk hole and passes through the through hole and is screwed into the threaded hole.

[0013] As an alternative, the sealing channel is provided with a second seal and a third seal, and the operating connector or the operating rod can be sealed and inserted into the second seal and the third seal. The sealing lip of the second seal faces inward to the main housing, and the sealing lip of the third seal faces outward to the main housing.

[0014] As an alternative, the edges of the ends where the operating lever and the operating connector connect to each other are provided with arc transitions, and the two arc transitions form a recessed structure;

[0015] The sealing channel is provided with at least two second seals and an annular gasket sandwiched between the two second seals. The annular gasket is used to prevent the recessed structure from affecting the sealing performance of the two second seals at the same time.

[0016] As an alternative, the width dimension of the annular gasket along the axial direction of the sealing channel is L2, and the length dimension of the individual arc transition along the axial direction of the sealing channel is L1, where L2 ≥ 1.5L1.

[0017] As an optional solution, the busbar structure further includes a sleeve and a gland. The sleeve is disposed within the sealing channel, and the inner wall of the sleeve is provided with an annular protrusion. The gland is disposed at the outer end of the sleeve. The second sealing element, the annular gasket, and the third sealing element are all disposed within the sleeve and sandwiched between the annular protrusion and the gland.

[0018] As an alternative, a limiting boss is provided on the outer periphery of the end of the operating connector opposite to the operating rod. When the operating connector is in the first position, the limiting boss abuts against the annular protrusion.

[0019] As an alternative, a removable protective cover is provided on the main housing at the outer end of the sealing channel. When the operating connector is in the first position and the protective cover is covering the outer end of the sealing channel, the protective cover is connected to the operating connector.

[0020] As an optional embodiment, the movable plug-in assembly includes a fixed base, a movable contact, and a meshing turbine and worm gear. The fixed base is disposed within the main housing. The movable contact is slidably connected to the fixed base and can engage or disengage from the stationary plug-in assembly. The turbine and the worm gear are both rotatably connected to the fixed base, and the turbine is provided with a screw that is screwed to the movable contact. When the operating connector is in the second position, the operating connector is connected to the worm gear.

[0021] As an alternative, the operating connector has a connection hole at one end facing the worm gear, and when the operating connector is in the second position, the worm gear is inserted into the connection hole.

[0022] The beneficial effects of this utility model are:

[0023] The busbar structure provided by this utility model has a sealed channel in the main housing. When the operating connector is in the first position, it is sealed to the sealed channel. When the operating connector is in the second position, it is connected to the moving plug assembly, and the operating rod is sealed to the sealed channel. This allows the operating rod to be operated without opening the cover, so that the moving plug assembly can be moved by the operating connector to realize the opening and closing of the busbar structure. The operation is convenient and efficient, and avoids the quality risks caused by opening the cover. In addition, the operating rod and the operating connector are detachably connected by fasteners, so that the operating rod can be removed after the opening and closing is completed, avoiding misoperation and electric shock. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the busbar structure provided in this embodiment of the present invention when no operating lever is provided;

[0025] Figure 2 This is a schematic diagram of the busbar structure with the operating lever provided in this embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure at the sealing channel position on the outer shell according to an embodiment of the present utility model (without the operating lever);

[0027] Figure 4 This is a structural schematic diagram of the sealing channel position on the outer shell (with an operating lever) involved in the embodiment of this utility model.

[0028] Figure 5 This is a cross-sectional view of the busbar structure provided in an embodiment of this utility model.

[0029] In the picture:

[0030] 1. Main casing; 11. Outer casing; 111. Sealing channel; 12. Insulator;

[0031] 2. Stationary connector assembly; 21. Stationary contact; 22. First contact finger;

[0032] 3. Moving connector assembly; 31. Fixed base; 32. Moving contact; 33. Turbine; 331. Screw; 34. Worm gear; 35. Second contact finger;

[0033] 4. Operating components; 41. Operating lever; 411. Countersunk hole; 412. Handle; 42. Operating connector; 421. Limiting boss; 422. Connecting hole; 43. Fastener; 44. First seal;

[0034] 5. Second seal; 6. Third seal; 7. Annular gasket; 8. Sleeve; 81. Annular protrusion; 9. Gland; 10. Protective cover. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] like Figures 1-5As shown, this utility model embodiment provides a busbar structure, which includes a main housing 1, a static plug-in assembly 2, a dynamic plug-in assembly 3, and an operating assembly 4.

[0040] The main housing 1 has a sealing channel 111 on its side wall; the stationary plug-in assembly 2 is located on one side inside the main housing 1, and the moving plug-in assembly 3 is located on the other side inside the main housing 1; the operating assembly 4 is used to control the moving plug-in assembly 3 to move toward or away from the stationary plug-in assembly 2 without opening the main housing 1, so as to realize the engagement or disengagement of the moving plug-in assembly 3 and the stationary plug-in assembly 2, that is, to realize the closing or opening of the busbar structure. It can be understood that since there is no need to open the cover, the cover plate structure set on the main housing 1 can be eliminated.

[0041] Specifically, the operating assembly 4 includes an operating lever 41 and an operating connector 42, which has a first position and a second position. When the busbar structure is closed and operating normally, the operating connector 42 is in the first position, that is, the operating connector 42 is sealed to the sealing channel 111, so that the operating connector 42 blocks the sealing channel 111 to prevent gas leakage in the main housing 1. When the busbar structure needs to be opened, the operating lever 41 is connected to the operating connector 42 in the first position, and the operating lever 41 pushes the operating connector 42 to switch to the second position, that is, the operating connector 42 is connected to the movable plug assembly 3. At this time, the operating lever 41 is connected to the sealing channel 111, so that the operating lever 41 blocks the sealing channel 111 to prevent gas leakage in the main housing 1. Furthermore, one end of the operating rod 41 located inside the main housing 1 is connected to the operating connector 42, and the other end of the operating rod 41 extends outside the main housing 1. The operator only needs to manipulate the end of the operating rod located outside the main housing 1 to operate the operating rod 41, and can drive the moving plug assembly 3 to move closer to or away from the stationary plug assembly 2 through the operating connector 42 to close or open the circuit.

[0042] Furthermore, the operating lever 41 and the operating connector 42 are detachably connected by fasteners 43, so that the operating lever 41 can be disassembled after the bus structure is opened or closed, thus avoiding misoperation. When the operating connector 42 is in the second position, the connection positions of the operating lever 41 and the operating connector 42 are both located inside the main housing 1.

[0043] In this busbar structure, the main housing 1 is provided with a sealed channel 111. When the operating connector 42 is in the first position, the operating connector 42 is sealed and connected to the sealed channel 111. When the operating connector 42 is in the second position, the operating connector 42 is connected to the movable plug-in assembly 3. The operating rod 41 is sealed and connected to the sealed channel 111, so that the busbar structure can be operated without opening the cover. This allows the moving plug-in assembly 3 to be moved by the operating connector 42 to realize the opening and closing of the busbar structure. The operation is convenient and efficient, avoiding the quality risks caused by opening the cover. In addition, the operating rod 41 and the operating connector 42 are detachably connected by fasteners 43, so that the operating rod 41 can be detached after the opening and closing is completed, avoiding misoperation and electric shock.

[0044] To prevent gas inside the main housing 1 from leaking through the gap between the operating lever 41 and the operating connector 42 and then through the fastener 43, a first sealing element 44 is provided around the fastener 43 between the operating lever 41 and the operating connector 42. The first sealing element 44 prevents gas inside the main housing 1 from leaking through the gap between the operating lever 41 and the operating connector 42, thereby preventing leakage. Furthermore, the first sealing element 44 between the operating lever 41 and the operating connector 42 reduces the probability of gas leakage from the main housing 1 through the fastener 43.

[0045] Optionally, the first seal 44 can be an O-ring, and the end face of the operating connector 42 is provided with an annular groove, with the O-ring disposed in the annular groove.

[0046] In this embodiment, the main housing 1 includes an outer shell 11 and two insulators 12. The two insulators 12 are disposed at both ends of the outer shell 11 along the through direction of the outer shell 11. The static plug-in assembly 2 and the dynamic plug-in assembly 3 are respectively connected to the two insulators 12. The side wall of the outer shell 11 is provided with a sealing channel 111.

[0047] In this embodiment, fastener 43 is a fastening screw; such as Figure 2 As shown, the operating lever 41 is a hollow structure. A countersunk hole 411 is provided at the end facing away from the operating connector 42. A through hole is provided at the bottom of the countersunk hole 411. A threaded hole is provided at the end of the operating connector 42 facing the operating lever 41. The fastening screw is positioned within the countersunk hole 411 and passes through the through hole, where it is screwed into the threaded hole. This structure allows for convenient installation and operation by simply inserting the fastening screw into the countersunk hole 411 and tightening it with a wrench when installing the operating lever 41 and the operating connector 42.

[0048] To prevent gas inside the main housing 1 from leaking through the sealing channel 111, or to prevent outside gas from entering the main housing 1 through the sealing channel 111 during vacuuming, such as Figures 3-4As shown, a second sealing element 5 and a third sealing element 6 are provided in the sealing channel 111. When the operating connector 42 is in the first position, the operating connector 42 is inserted into the second sealing element 5 and the third sealing element 6 to achieve a sealed connection between the operating connector 42 and the sealing channel 111. When the operating connector 42 is in the second position, the operating rod 41 is inserted into the second sealing element 5 and the third sealing element 6 to achieve a sealed connection between the operating rod 41 and the sealing channel 111.

[0049] In this embodiment, both the second seal 5 and the third seal 6 are lip-shaped skeleton seal rings. The sealing lip of the second seal 5 faces the inside of the main housing 1 to prevent gas inside the main housing 1 from leaking out. The sealing lip of the third seal 6 faces the outside of the main housing 1 to prevent external gas from entering the main housing 1 when the main housing 1 is evacuated.

[0050] To prevent the operating lever 41 from scratching the second seal 5 and the third seal 6 when moving the operating connector 42, the edges of the connecting ends of the operating lever 41 and the operating connector 42 are provided with arc transitions. Furthermore, since the two relatively distributed arc transitions form an inwardly recessed structure, when the recessed structure passes through the second seal 5, there is a risk of gas leakage into the main housing 1. To avoid this, at least two annular washers 7 are provided for the second seal 5, and annular washers 7 are sandwiched between the two second seals 5. The annular washers 7 are used to prevent the recessed structure from affecting both second seals 5 simultaneously. Specifically, the width of the annular washers 7 is set to be greater than or equal to 1.5 times the width of one arc transition. For example, the width L1 of a single-sided arc transition is 4 mm, and the width L2 of the annular washers 7 is at least 6 mm. Preferably, the width of the annular washers 7 is twice the width of one arc transition. When the operating lever 41 drives the operating connector 42 into the main housing 1, the recessed structure passes through the second seal 5 located on the outer side. The second seal 5 located on the inner side is still sealed and engaged with the operating connector 42. When the recessed structure passes through the second seal 5 located on the inner side, the second seal 5 located on the outer side is sealed and engaged with the operating lever 41. The transfer of the sealing engagement is achieved by setting the annular washer 7, so that there is always a second seal 5 playing a sealing role throughout the process, ensuring that no leakage occurs.

[0051] Understandably, since the operating connector 42 is always in the first position during vacuuming, only a third seal 6 is needed to meet the requirements.

[0052] Furthermore, to facilitate the installation of the second seal 5, the third seal 6, and the annular gasket 7, the busbar structure also includes a sleeve 8 and a gland 9. The sleeve 8 is installed inside the sealing channel 111, and the inner wall of the sleeve 8 is provided with an annular protrusion 81. The gland 9 is located at the outer end of the sleeve 8. The second seal 5, the annular gasket 7, and the third seal 6 are all located inside the sleeve 8 and sandwiched between the annular protrusion 81 and the gland 9 to prevent displacement of the second seal 5, the annular gasket 7, and the third seal 6.

[0053] It should be noted that the second seal 5, the annular washer 7 and the third seal 6 can be directly installed in the sealing channel 111; or a bushing can be installed in the sealing channel 111, with the second seal 5, the annular washer 7 and the third seal 6 installed inside the bushing.

[0054] When the main housing 1 is inflated or when the operating connector 42 is pulled out by the operating lever 41, in order to prevent the operating connector 42 from coming out of the sealing channel 111, optionally, a limiting boss 421 is provided on the outer periphery of the end of the operating connector 42 away from the operating lever 41. The limiting boss 421 can abut against the annular protrusion 81 to limit the operating connector 42 from coming out.

[0055] When the busbar structure is operating normally, to prevent accidental pushing of the operating connector 42 into the main housing 1, or to prevent the operating connector 42 from moving into the main housing 1 during vacuuming, optionally, a removable protective cover 10 is provided on the outer shell 11 of the main housing 1 at the outer end of the sealing channel 111. When the operating connector 42 is in the first position and the protective cover 10 is covering the outer end of the sealing channel 111, the protective cover 10 and the operating connector 42 are connected by screws. By covering the sealing channel 111 with the protective cover 10 and then connecting the protective cover 10 and the operating connector 42 with screws, the installation of the protective cover 10 and the restriction of the operating connector 42 to the first position are achieved.

[0056] In this embodiment, refer again Figures 1-2 and combined Figure 5As shown, the stationary plug-in assembly 2 includes a stationary contact 21 and a first contact finger 22. The first contact finger 22 is disposed on the inner wall of the stationary contact 21, and the stationary contact 21 is connected to an insulator 12 on the housing 11. The moving plug-in assembly 3 includes a fixed base 31, a moving contact 32, a second contact finger 35, and a meshing turbine 33 and a worm gear 34. The fixed base 31 is disposed inside the main housing 1 and connected to another insulator 12 on the housing 11. The second contact finger 35 is disposed on the inner wall of the fixed base 31. The moving contact 32 is slidably connected to the fixed base 31. The turbine 33 and the worm gear 34 are both... The turbine 33 is rotatably connected to the fixed base 31 and is equipped with a screw 331 that is screwed to the moving contact 32 (i.e., a nut sleeve is provided on the moving contact 32, and the screw 331 is screwed to the nut sleeve). When the operating joint 42 is in the second position, the operating joint 42 is connected to the worm gear 34. When the operator rotates the operating lever 41, the operating joint 42 can drive the worm gear 34 to rotate, and the worm gear 34 can drive the turbine 33 to rotate, thereby enabling the turbine 33 to drive the screw 331 to rotate, so as to drive the moving contact 32 to approach or move away from the stationary contact 21 to realize the opening and closing of the circuit. In order to facilitate the rotation of the operating lever 41, a handle 412 is provided on the part of the operating lever 41 outside the main housing 1. The operating lever 41 can be rotated by rotating the handle 412.

[0057] Furthermore, the end of the operating connector 42 facing the worm gear 34 is provided with a connecting hole 422. When the operating connector 42 is in the second position, the worm gear 34 is inserted into the connecting hole 422. In this structure, when the operating rod 41 drives the operating connector 42 to switch to the second position, the connecting hole 422 can be directly aligned with the worm gear 34 and the connecting hole 422 can be sleeved onto the worm gear 34 to achieve connection, which is convenient for operation.

[0058] Understandably, the connecting hole 422 can be selected as a polygonal hole, and the cross section of the worm 34 is set to a polygon that matches the polygonal hole, so that no relative rotation occurs between the connecting hole 422 and the worm 34.

[0059] To facilitate observation of the opening and closing of the moving contact 32 and the stationary contact 21 inside the main housing 1, a transparent viewing window is provided on the side wall of the housing 11, through which the internal condition of the main housing 1 can be directly observed.

[0060] To accurately determine the position of the moving contact 32, in one embodiment, a circular hole can be provided on the moving contact 32. When the screw 331 drives the moving contact 32 to move closer to the stationary contact 21 to close the circuit, it can be observed through the transparent window that when the circular hole is flush with the edge of the stationary contact 21, it indicates that the moving contact 32 has reached the closed position. When the screw 331 drives the contact 32 to move away from the stationary contact 21 to open the circuit, it can be observed through the transparent window that the circular hole enters the fixed seat 31, indicating that the moving contact 32 has reached the open position.

[0061] In another embodiment, a limit step can be provided on the screw 331. When the screw 331 drives the moving contact 32 to move closer to the stationary contact 21 to close the circuit, the nut sleeve provided on the moving contact 32 abuts against the limit step, and the operating rod 41 is resisted and cannot continue to rotate, indicating that the moving contact 32 has reached the closed position. When the screw 331 drives the moving contact 32 to move closer to the stationary contact 21 to open the circuit, the moving contact 32 abuts against the turbine 33 at the lower end of the screw 331, and the operating rod 41 is resisted and cannot continue to rotate, indicating that the moving contact 32 has reached the open position.

[0062] The operation procedure of the busbar structure is as follows: Open the protective cover 10; connect the operating rod 41 and the operating connector 42 with the fastener 43. When connecting, the first sealing element 44 needs to be installed between the two and the fastener 43 needs to be locked; push the operating rod 41 to make the operating connector 42 mate with the worm gear 34, and the sealing fit is transferred during this process; rotate the operating rod 41 to make the operating connector 42 drive the worm gear 34 to rotate, so as to realize the movement of the moving contact 32; after the operation is completed, remove the operating rod 41, and the operating connector 42 re-seales with the sealing channel 111.

[0063] The aforementioned busbar structure, by providing a detachable operating lever 41, allows for the configuration of only one operating lever 41 when multiple busbar structures are installed in the power equipment. Furthermore, after the operation is completed, the operating lever 41 is removed, and the operating connector 42 re-seales with the sealing channel 111, meaning that it does not come into contact with the parts of the movable plug-in assembly 3, thus eliminating the risk of electric shock.

[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A busbar structure, characterized in that, include: The main housing (1) has a sealing channel (111) on its side wall; A static plug-in assembly (2) is disposed on one side inside the main housing (1); The movable plug-in assembly (3) is disposed on the other side inside the main housing (1); The operating component (4) includes an operating lever (41) and an operating connector (42), wherein the operating lever (41) and the operating connector (42) are detachably connected by fasteners (43); The operating connector (42) has a first position and a second position. When the operating connector (42) is in the first position, the operating connector (42) is sealed to the sealing channel (111). When the operating connector (42) is in the second position, the operating connector (42) is driven to the moving plug assembly (3). The operating rod (41) is sealed to the sealing channel (111). One end of the operating rod (41) inside the main housing (1) is connected to the operating connector (42), and the other end of the operating rod (41) extends outside the main housing (1). The operating rod (41) can drive the operating connector (42) to rotate. The operating connector (42) drives the moving plug assembly (3) to move closer to or away from the stationary plug assembly (2) so that the moving plug assembly (3) and the stationary plug assembly (2) can engage or disengage.

2. The busbar structure according to claim 1, characterized in that, A first sealing element (44) is provided between the operating lever (41) and the operating joint (42) and is arranged around the fastener (43).

3. The busbar structure according to claim 1, characterized in that, The fastener (43) is a fastening screw; the end of the operating rod (41) opposite to the operating joint (42) is provided with a countersunk hole (411), the bottom of the countersunk hole (411) is provided with a through hole, the operating joint (42) is provided with a threaded hole, and the fastening screw is located in the countersunk hole (411) and passes through the through hole and is screwed into the threaded hole.

4. The busbar structure according to claim 1, characterized in that, The sealing channel (111) is provided with a second sealing element (5) and a third sealing element (6). The operating connector (42) or the operating rod (41) can be sealed and inserted into the second sealing element (5) and the third sealing element (6). The sealing lip of the second sealing element (5) faces the inside of the main housing (1), and the sealing lip of the third sealing element (6) faces the outside of the main housing (1).

5. The busbar structure according to claim 4, characterized in that, The end edges of the operating lever (41) and the operating connector (42) that are connected to each other are provided with arc transitions, and the two arc transitions form a concave structure; The sealing channel (111) is provided with at least two second seals (5) and an annular gasket (7) sandwiched between the two second seals (5). The annular gasket (7) is used to prevent the recessed structure from affecting the sealing performance of the two second seals (5) at the same time.

6. The busbar structure according to claim 5, characterized in that, The width dimension of the annular gasket (7) along the axial direction of the sealing channel (111) is L2, and the length dimension of the single arc transition along the axial direction of the sealing channel (111) is L1, where L2 ≥ 1.5L1.

7. The busbar structure according to claim 5, characterized in that, The busbar structure also includes a sleeve (8) and a gland (9). The sleeve (8) is disposed in the sealing channel (111), and the inner wall of the sleeve (8) is provided with an annular protrusion (81). The gland (9) is disposed at the outer end of the sleeve (8). The second sealing member (5), the annular gasket (7) and the third sealing member (6) are all disposed in the sleeve (8) and sandwiched between the annular protrusion (81) and the gland (9).

8. The busbar structure according to claim 7, characterized in that, The operating connector (42) is provided with a limiting boss (421) on the outer periphery of one end away from the operating rod (41). When the operating connector (42) is in the first position, the limiting boss (421) abuts against the annular protrusion (81).

9. The busbar structure according to any one of claims 1-8, characterized in that, A removable protective cover (10) is provided on the main housing (1) at the outer end of the sealing channel (111). When the operating connector (42) is located in the first position and the protective cover (10) is covering the outer end of the sealing channel (111), the protective cover (10) is connected to the operating connector (42).

10. The busbar structure according to any one of claims 1-8, characterized in that, The movable plug assembly (3) includes a fixed base (31), a movable contact (32), and a meshing turbine (33) and worm (34). The fixed base (31) is disposed inside the main housing (1). The movable contact (32) is slidably connected to the fixed base (31) and can engage or disengage from the static plug assembly (2). The turbine (33) and the worm (34) are both rotatably connected to the fixed base (31). The turbine (33) is provided with a screw (331) that is screwed to the movable contact (32). When the operating connector (42) is in the second position, the operating connector (42) is connected to the worm (34).

11. The busbar structure according to claim 10, characterized in that, The operating connector (42) has a connecting hole (422) at one end facing the worm (34). When the operating connector (42) is in the second position, the worm (34) is inserted into the connecting hole (422).

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