Moving contact device and disconnector

Abstract

The utility model relates to a moving contact device and isolator, the moving contact device, include: the moving side conductor, the moving side conductor is equipped with first sliding cavity and second sliding cavity, moving contact subassembly, moving contact subassembly includes moving contact and transmission subassembly, transmission subassembly includes the crank, the first pivot fixedly arranged in one end of the crank, the second pivot fixedly arranged in one end of the crank, the link of rotatable connection in the second pivot and the slider rotatable connection in the other end of the link, the slider is slidably arranged in the second sliding cavity, the other end of the link is rotatable connection in the moving contact, the first pivot is used for connecting in the output shaft of operating mechanism, transmission subassembly is based on the link principle, can directly with operating mechanism output rotation movement conversion is the linear translation movement of moving contact, makes moving contact have faster response speed, is favorable to realize the quick break of isolator.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage power transmission and distribution technology, and in particular to moving contact devices and disconnecting switches. Background Technology

[0002] Gas-insulated metal-enclosed switchgear (GIS) is a crucial piece of equipment in power systems, earning market trust due to its high parameters, integration, and reliable operation. Disconnecting switchgear, as a key component of GIS equipment, primarily functions to safely isolate de-energized equipment and lines from the energized system within the power grid.

[0003] Currently, disconnecting switches typically employ a rack and pinion transmission structure. On one hand, gears have high material costs and complex manufacturing processes, leading to high production costs. On the other hand, only a few pairs of teeth mesh during transmission, rather than all teeth corresponding to each other. This transmission structure is unsuitable for withstanding large instantaneous impact loads; therefore, rack and pinion drives are best suited for use with a smooth-running electric operating mechanism. Furthermore, when disconnecting switches with electric operating mechanisms perform opening and closing operations, the electric operating mechanism needs to drive the gear to rotate multiple times to achieve the moving contact's position, resulting in a slower response speed and hindering the rapid opening of the disconnecting switch.

[0004] In some operating conditions, when the disconnecting switch opens and closes the filter current, an electric spring operating mechanism is required to increase the opening speed of the moving contact of the disconnecting switch, so as to more easily interrupt the filter current. At this time, the gear and rack structure cannot meet the transmission requirements of the moving contact of the disconnecting switch. Utility Model Content

[0005] Therefore, it is necessary to provide moving contact devices and disconnect switches to address the slow response speed of existing gear and rack structures.

[0006] On one hand, this application provides a moving contact device, comprising: a moving side conductor, the moving side conductor having a first sliding cavity extending along a first sliding direction and a second sliding cavity extending along a second sliding direction, the first sliding direction being different from the second sliding direction, and the side wall of the first sliding cavity having a plurality of annular mounting grooves; a moving contact assembly, the moving contact assembly including a moving contact slidably disposed in the first sliding cavity and a plurality of moving contact springs respectively disposed in the mounting grooves; and a transmission assembly, the transmission assembly including a crank arm, a first rotating shaft fixed to one end of the crank arm, a second rotating shaft fixed to one end of the crank arm, a connecting plate rotatably connected to the second rotating shaft, and a slider rotatably connected to the other end of the connecting plate, the slider being slidably disposed in the second sliding cavity, the other end of the connecting plate being rotatably connected to the moving contact, and the first rotating shaft being used to connect to the output shaft of an operating mechanism.

[0007] In one embodiment, the first sliding direction is perpendicular to the second sliding direction.

[0008] In one embodiment, the moving contact assembly includes at least one guide sleeve, and the sidewall of the first sliding cavity is further provided with at least one annular guide groove. The guide sleeve is fitted onto the moving contact and disposed within the guide groove.

[0009] In one embodiment, the moving side conductor includes a conductor body and a guide flange. The side of the conductor body is provided with an inwardly recessed mounting surface. The mounting surface has a flange hole. The guide flange is inserted into the flange hole and fixed to the mounting surface. The second sliding cavity is formed in the guide flange.

[0010] In one embodiment, the guide flange includes a flange body and a limiting plate fixed to the flange body. The flange body has a second sliding cavity, and the limiting plate has a limiting boss. The limiting boss is disposed inside or outside the second sliding cavity. The conductor body includes a mounting portion, a main body portion, and a transition portion connecting the mounting portion and the main body portion. The mounting portion has an outwardly protruding frustum, and the transition portion includes a plurality of arc segments connected in sequence. The mounting plane is disposed on the main body portion.

[0011] In one embodiment, the sidewall of the first sliding cavity is provided with a foreign object collection groove, which is connected to the mounting groove.

[0012] In one embodiment, the moving contact includes a contact body and a moving arc contact. The front end of the contact body has an embedding groove, and the moving arc contact is fixed in the embedding groove. The connecting plate is rotatably connected to the contact body. The moving arc contact has an inwardly concave arc-shaped surface. The moving contact assembly also includes a pin. The moving contact also includes a pair of extension arms connected to the contact body. The extension arms have pin holes, and the pin is inserted into the pin holes. The connecting plate is rotatably connected to the pin.

[0013] In one embodiment, the pin includes a limiting segment, a rectangular segment, and a cylindrical segment connected in sequence; the pin hole on one of the extension arms is a rectangular hole, and the pin hole on the other extension arm is a circular hole, the rectangular segment is inserted into the rectangular hole, and the cylindrical segment is inserted into the circular hole.

[0014] In one embodiment, the connecting plate has a bevel on the side near the moving contact assembly.

[0015] On the other hand, this application also provides a disconnecting switch, including: a moving contact device as described in any of the above; a stationary contact device disposed on one side of the moving contact device; and an operating mechanism, the output shaft of which is drivably connected to a first rotating shaft of the moving contact device.

[0016] In summary, this application limits the moving contact and slider by setting a first sliding cavity and a second sliding cavity in the moving conductor, respectively. When the operating mechanism drives the first rotating shaft to rotate, it will drive the crank arm connected to it to rotate together. The rotation of the crank arm forces the second rotating shaft to rotate relative to the first rotating shaft, and at the same time drives the connecting plate connected to the second rotating shaft to move. Under the guidance and constraint of the slider, one end of the connecting plate slides along the second sliding direction, thereby pushing the other end of the connecting plate to move along the first sliding direction. Through the transmission component, the rotational motion output by the operating mechanism can be effectively converted into the linear translational motion of the moving contact assembly, realizing the opening and closing function of the moving contact device. In this way, the transmission component, based on the linkage principle, can directly convert the rotational motion output by the operating mechanism into the linear translational motion of the moving contact, giving the moving contact a faster response speed, which is beneficial to realizing the rapid opening and closing of the disconnecting switch. Attached Figure Description

[0017] Figure 1 A schematic diagram of a moving contact device provided in one embodiment of this application;

[0018] Figure 2 As shown Figure 1 A schematic diagram of the AA cross-section of the moving contact device shown;

[0019] Figure 3 A schematic diagram of the moving side conductor of the moving contact device according to the above embodiments of this application is shown;

[0020] Figure 4 A schematic diagram of the flange body of the guide flange of the moving contact device according to the above embodiments of this application is shown;

[0021] Figure 5 A schematic diagram of the limiting plate of the guide flange of the moving contact device according to the above embodiment of this application is shown;

[0022] Figure 6 A schematic diagram of the guide flange limiting plate of the moving contact device according to the above embodiments of this application is shown in the upright position.

[0023] Figure 7 A schematic diagram is shown of the guide flange limiting plate of the moving contact device according to the above embodiments of this application when it is reversed;

[0024] Figure 8 A schematic diagram of the moving contact of the moving contact device according to the above embodiment of this application is shown;

[0025] Figure 9 A schematic diagram of the pin shaft of the moving contact device according to the above embodiment of this application is shown;

[0026] Figure 10 A schematic diagram of the connecting plate of the moving contact device according to the above embodiments of this application is shown;

[0027] Figure 11 A schematic diagram of the slider of the moving contact device according to the above embodiments of this application is shown;

[0028] Figure 12 A schematic diagram of the disconnecting switch being tripped, provided as an embodiment of this application;

[0029] Figure 13 A schematic diagram of the disconnecting switch being closed according to the above embodiments of this application is shown;

[0030] Figure 14 A schematic diagram of the stationary contact device of the disconnecting switch according to the above embodiment of this application is shown.

[0031] Reference numerals: 100, Moving contact device; 10, Moving side conductor; 11, Conductor body; 111, First sliding cavity; 112, Mounting groove; 113, Mounting part; 1131, Frustum; 114, Transition part; 115, Main body; 116, Mounting plane; 1161, Flange hole; 117, Grounding groove; 118, Foreign matter collection groove; 119, Guide groove; 12, Guide flange; 121, Second sliding cavity; 122, Flange body; 123, Limiting plate; 1231, Limiting boss; 20, Moving contact assembly; 21, Moving contact; 211, Contact body; 2111, Embedded groove; 212, Moving arc contact. ; 2121, stepped hole; 213, extension arm; 2131, pin hole; 22, moving contact spring; 23, pin; 231, limiting section; 232, rectangular section; 233, cylindrical section; 30, transmission assembly; 31, crank arm; 32, first rotating shaft; 33, second rotating shaft; 34, connecting plate; 341, bevel; 35, slider; 351, bearing cavity; 352, non-circular surface; 40, grounding switch contact; 200, stationary contact device; 50, stationary side conductor; 51, stationary side contact cavity; 52, stationary contact spring groove; 60, stationary contact assembly; 61, stationary contact; 62, reset component; 63, stationary contact spring. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] To address the slow response speed of existing gear and rack structures, this application provides a moving contact device and a disconnecting switch. The moving contact device can satisfy the operation of both the operating mechanism and the electric spring operating mechanism, thus improving the versatility of the disconnecting switch.

[0039] On the one hand, please refer to Figure 1 , Figure 2 and Figure 3The moving contact device 100 may include a moving side conductor 10, a moving contact assembly 20, and a transmission assembly 30. The moving side conductor 10 has a first sliding cavity 111 and a second sliding cavity 121. The first sliding cavity 111 extends along a first sliding direction, and the second sliding cavity 121 extends along a second sliding direction, with the first sliding direction being different from the second sliding direction. The moving contact assembly 20 may include a moving contact 21 and a plurality of moving contact springs 22. The moving contact 21 is slidably disposed within the first sliding cavity 111 and can slide along the first sliding direction. The sidewall of the first sliding cavity 111 has a plurality of annular mounting grooves 112. The moving contact springs 22 are respectively disposed within the mounting grooves 112 and can freely deform within the mounting grooves 112. When the moving contact 21 enters the first sliding cavity 111, the moving contact springs 22 are opened by the moving contact 21, thereby connecting the moving contact 21 with the moving side conductor 10. The transmission assembly 30 may include a crank arm 31, a first rotating shaft 32, a second rotating shaft 33, a connecting plate 34, and a slider 35. The first rotating shaft 32 and the second rotating shaft 33 are respectively fixed at both ends of the crank arm 31. The first rotating shaft 32 is used to connect to the output shaft of the operating mechanism. The connecting plate 34 is rotatably connected to the second rotating shaft 33. One end of the connecting plate 34 is rotatably connected to the slider 35, and the other end is rotatably connected to the moving contact 21. The slider 35 is slidably disposed in the second sliding cavity 121 and can slide along the second sliding direction.

[0040] Understandably, this application limits the moving contact 21 and the slider 35 by setting a first sliding cavity 111 and a second sliding cavity 121 in the moving conductor 10, respectively. When the operating mechanism drives the first rotating shaft 32 to rotate, it will drive the crank arm 31 connected to it to rotate together. The rotation of the crank arm 31 forces the second rotating shaft 33 to rotate relative to the first rotating shaft 32, and at the same time drives the connecting plate 34, which is rotatably connected to the second rotating shaft 33, to move. Under the guidance and constraint of the slider 35, one end of the connecting plate 34 slides along the second sliding direction, thereby pushing the other end of the connecting plate 34 to move along the first sliding direction. Through the transmission component 30, the rotational motion output by the operating mechanism can be effectively converted into the linear translational motion of the moving contact component 20, realizing the opening and closing function of the moving contact device 100. In this way, the transmission component 30, based on the linkage principle, can directly convert the rotational motion output by the operating mechanism into the linear translational motion of the moving contact 21, so that the moving contact 21 has a faster response speed, which is beneficial to realizing the rapid opening and closing of the disconnecting switch.

[0041] Optionally, in some embodiments, the first sliding direction is perpendicular to the second sliding direction. This arrangement, through a vertical layout, avoids the loss of force components, allowing the force components generated by the connecting lever 34 to act in both the first and second sliding directions respectively. This enables the torque output by the operating mechanism to be more effectively converted into the linear thrust required for the sliding of the moving contact assembly 20. Furthermore, it reduces the generation of lateral forces, thereby reducing frictional wear and the risk of jamming in the moving contact 21.

[0042] Optionally, such as Figure 3 As shown, in some embodiments, the moving contact assembly 20 may further include at least one guide sleeve, and the sidewall of the first sliding cavity 111 is further provided with at least one annular guide groove 119. The guide sleeve is fitted onto the moving contact 21 and disposed within the guide groove 119. The guide sleeve and the guide groove 119 cooperate to guide the moving contact 21, preventing the moving contact 21 from deflecting or getting stuck during sliding, and ensuring that the moving contact 21 maintains linear movement along a predetermined path of the first sliding cavity 111.

[0043] For example, such as Figure 3 As shown, in some embodiments, the moving contact assembly 20 may include two guide sleeves, and the sidewall of the first sliding cavity 111 may have two guide grooves 119. In this way, the movement path of the moving contact 21 can be made more precise through the combined action of the two guide sleeves.

[0044] Because the moving contact 21 experiences frictional wear with the moving contact spring 22 during movement, it is prone to generating dust or debris, which can easily cause the moving contact assembly 20 to jam. Therefore, if... Figure 3 As shown, in some embodiments, the side wall of the first sliding cavity 111 is provided with a foreign matter collection groove 118, which is connected to the mounting groove 112. The foreign matter collection groove 118 can collect dust or debris generated by the friction between the moving contact 21 and the moving contact spring 22. In this way, the foreign matter generated by the moving contact 21 and the moving contact spring 22 is collected in the foreign matter collection groove 118, which can make the sliding of the moving contact 21 smoother.

[0045] Optionally, in some embodiments, the crank arm 31 is provided with an internal hexagonal hole or an internal spline tooth hole, and the first rotating shaft 32 is provided with an external hexagonal surface that mates with the internal hexagonal hole of the crank arm 31 or an external spline tooth surface that mates with the internal spline tooth hole of the crank arm 31. In this way, the hexagonal structure or spline tooth structure can be used to restrict the rotation of the first rotating shaft 32 relative to the crank arm 31, allowing the operating mechanism to transmit the output torque to the crank arm 31, driving the crank arm 31 to rotate. Compared to the gear and rack transmission structure, the transmission structure with the internal and external hexagonal holes mate or the transmission structure with the internal spline tooth hole and the external spline tooth surface mate is a fully toothed meshing structure, capable of withstanding stronger instantaneous impact loads, and more suitable for use with an electric spring operating mechanism, giving the disconnecting switch a faster response speed.

[0046] Optionally, such as Figure 11 As shown, in some embodiments, the slider 35 is provided with a bearing cavity 351, and the transmission assembly 30 also includes a bearing, which is disposed in the bearing cavity 351 and located between the slider 35 and the connecting plate 34. The bearing can be used to reduce the rotational friction between the slider 35 and the connecting plate 34.

[0047] Optionally, such as Figure 11 As shown, in some embodiments, the slider 35 has a non-circular surface 352.

[0048] Optionally, such as Figure 3 and Figure 4 As shown, in some embodiments, the moving conductor 10 may include a conductor body 11 and a guide flange 12. The side of the conductor body 11 is provided with an inwardly recessed mounting surface 116, and the mounting surface 116 has a flange hole 1161. The guide flange 12 is inserted into the flange hole 1161 and fixed to the mounting surface 116. The second sliding cavity 121 is formed in the guide flange 12. With this configuration, the conductor body 11 and the guide flange 12 form a split design. By setting the second sliding cavity 121 in the guide flange 12, instead of processing it directly on the conductor body 11, the installation, positioning, and alignment process of the transmission assembly 30, especially components such as the slider 35 or the connecting plate 34, can be significantly simplified. Moreover, the guide flange 12, as an independent component, is easy to manufacture and assemble, facilitating the later maintenance of the moving contact device 100.

[0049] Optionally, such as Figure 4 and Figure 5 As shown, in some embodiments, the guide flange 12 may include a flange body 122 and a limiting plate 123. The limiting plate 123 is fixed to the flange body 122, and the flange body 122 has a second sliding cavity 121. The limiting plate 123 has a limiting boss 1231 protruding from it, which is disposed inside or outside the second sliding cavity 121. In other words, the limiting plate 123 has a limiting boss 1231 on one side, and the limiting plate 123 can be fixed to the flange body 122 in a forward or reverse manner. The limiting plate 123 can act as a physical stop, playing a limiting role, which can effectively prevent the slider 35 from accidentally dislodging from the second sliding cavity 121 during sliding, significantly improving the safety and reliability of the transmission assembly 30. The limiting boss 1231 can change the sliding stroke of the slider 35 in the second sliding cavity 121, such as... Figure 6 and Figure 7As shown, when the limiting plate 123 is mounted upright on the flange body 122, the limiting boss 1231 is located inside the second sliding cavity 121. At this time, the limiting boss 1231 occupies part of the space in the second sliding cavity 121, shortening the sliding stroke of the slider 35. When the limiting plate 123 is mounted backwards on the flange body 122, the limiting boss 1231 is located outside the second sliding cavity 121. At this time, the limiting boss 1231 does not occupy the space in the second sliding cavity 121, allowing the slider 35 to have the maximum sliding stroke. In this way, by flexibly selecting the installation method of the limiting plate 123, allowing the limiting boss 1231 to be located inside or outside the second sliding cavity 121, the sliding stroke of the slider 35 can be flexibly set and changed without altering the main structure of the flange body 122 or the second sliding cavity 121, providing convenience for adjusting the stroke of the transmission assembly 30.

[0050] Optionally, such as Figure 3 As shown, in some embodiments, the conductor body 11 includes a mounting portion 113, a main body portion 115, and a transition portion 114. The mounting portion 113 is used for mounting on GIS equipment and has an outwardly protruding frustum 1131 for positioning, effectively reducing assembly errors during installation and ensuring assembly accuracy. The transition portion 114 connects the mounting portion 113 and the main body portion 115. The transition portion 114 includes multiple sequentially connected arc segments. Through a continuous and smooth arc design, the electric field strength on the surface of the moving-side conductor 10 can be significantly reduced. The main body portion 115 is the main structure of the conductor body 11 and can be used to support and mount other components. A mounting plane 116 is provided on the main body portion 115, i.e., the guide flange 12 is mounted on the main body portion 115.

[0051] Optionally, such as Figure 1 and Figure 3 As shown, in some embodiments, the conductor body 11 is further provided with an inwardly recessed grounding groove 117 on its side, and the moving contact device 100 also includes a grounding switch contact 40 installed in the grounding groove 117. The grounding switch contact 40 is used to ground the moving end of the disconnecting switch. By integrating the grounding switch contact 40 into the moving contact device 100, the disconnecting switch can be integrated.

[0052] Optionally, such as Figure 8As shown, in some embodiments, the moving contact 21 includes a contact body 211 and a moving arc contact 212. The moving arc contact 212 is fixed to the front end of the contact body 211, and the connecting plate 34 is rotatably connected to the contact body 211. The moving arc contact 212 has an inwardly concave arc-shaped surface. This configuration, by designing an inwardly concave arc-shaped surface on the moving arc contact 212, combined with an outwardly convex arc-shaped surface on the stationary arc contact, results in a larger contact area between the concave and convex arc-shaped surfaces when the disconnecting switch is switching current. This ensures that the arc only burns on the moving arc contact 212 and the stationary arc contact, preventing the arc from burning other components in the circuit.

[0053] Preferably, such as Figure 8 As shown, in some embodiments, the front end of the contact body 211 is provided with an embedding groove 2111, and the moving arc contact 212 is fixed in the embedding groove 2111. With this configuration, the mating surface of the moving arc contact 212 and the contact body 211 is located in the embedding groove 2111, and the embedding method can prevent the accumulation of foreign matter on the mating surface of the moving arc contact 212 and the contact body 211.

[0054] Optionally, such as Figure 8 As shown, in some embodiments, the moving arc contact 212 has a stepped hole 2121, which can be used to engage fasteners to fix the moving arc contact 212 to the contact body 211. Furthermore, the stepped hole 2121 can also form an airflow channel, which can be used for heat dissipation of the conductive circuit of the disconnector switch.

[0055] In particular, in some embodiments, the moving arc contact 212 is provided with a copper-tungsten layer, which can be formed by setting copper-tungsten material on a portion of the surface of the moving arc contact 212. By utilizing the high melting point and high hardness of copper-tungsten material, the copper-tungsten layer can actively withstand arc erosion, thereby enhancing the mechanical strength and resistance to welding of the moving arc contact 212.

[0056] Optionally, such as Figure 8 and Figure 9 As shown, in some embodiments, the moving contact assembly 20 further includes a pin 23, and the moving contact 21 further includes a pair of extension arms 213 connected to the contact body 211. The extension arms 213 have pin holes 2131, and the pin 23 is inserted into the pin holes 2131. The connecting plate 34 is rotatably connected to the pin 23. By adding extension arms 213 of a certain length to the contact body 211, it is possible to prevent the moving contact 21 and the connecting plate 34 from colliding during movement, ensuring that neither part is damaged.

[0057] Optionally, such as Figure 8 and Figure 9As shown, in some embodiments, the pin 23 includes a limiting segment 231, a rectangular segment 232, and a cylindrical segment 233 connected in sequence. The diameter of the limiting segment 231 is larger than the side length of the rectangular segment 232, and the diameter of the limiting segment 231 is larger than the diameter of the cylindrical segment 233. One extension arm 213 has a rectangular pin hole 2131, and the other extension arm 213 has a circular pin hole 2131. The rectangular segment is inserted into the rectangular hole, and the cylindrical segment is inserted into the circular hole. Thus, by the cooperation of the rectangular segment 232 and the rectangular hole, and the cylindrical segment 233 and the circular hole, the rotation of the pin 23 relative to the extension arm 213 can be restricted, thereby preventing mutual wear between the pin 23 and the extension arm 213, which would increase the clearance between the pin 23 and the pin hole 2131, and avoiding the risk of reduced transmission accuracy.

[0058] Optionally, such as Figure 10 As shown, in some embodiments, the connecting plate 34 has a bevel 341 on the side near the moving contact assembly 20. By providing the bevel 341 on the connecting plate 34, sufficient aperture can be reserved to prevent the connecting plate 34 from colliding with the moving contact 21 at the extreme positions of opening and closing, ensuring that neither part is damaged.

[0059] On the other hand, please refer to Figure 12 , Figure 13 and Figure 14 As shown, this application provides a disconnecting switch, which may include a moving contact device 100, a stationary contact device 200, and an operating mechanism. The stationary contact device 200 is disposed on one side of the moving contact device 100. The output shaft of the operating mechanism is drivably connected to the first rotating shaft 32 of the moving contact device 100, and can drive the moving contact device 100 to move, thereby realizing the opening and closing of the disconnecting switch.

[0060] The stationary contact device 200 may include a stationary conductor 50 and a stationary contact assembly 60. The stationary conductor 50 has a stationary contact cavity 51, and a plurality of stationary contact spring slots 52 are provided within the stationary contact cavity 51. The stationary contact assembly 60 includes a stationary contact 61, a reset member 62, and a plurality of stationary contact springs 63. The stationary contact 61 is disposed within the stationary contact cavity 51, the reset member 62 is disposed between the stationary contact 61 and the stationary conductor 50, and the stationary contact springs 63 are respectively disposed within the stationary contact spring slots 52. Figure 12 and Figure 13 The diagrams shown illustrate the opening and closing of the disconnecting switch. When the moving contact 21 is inserted into the stationary contact cavity 51 by the operating mechanism, it contacts the stationary contact 61 and pushes the stationary contact 61 to press the reset member 62. Simultaneously, the stationary contact spring 63 is inserted, causing it to unfold and thus closing the circuit between the moving contact device 100 and the stationary contact device 200. When the moving contact 21 is retracted by the operating mechanism, the reset member 62 releases its elastic force, returning the stationary contact 61 to its original position.

[0061] Alternatively, in some embodiments, the reset member 62 may be implemented as a compression spring.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A moving contact device, characterized in that, include: The moving side conductor has a first sliding cavity extending along a first sliding direction and a second sliding cavity extending along a second sliding direction. The first sliding direction is different from the second sliding direction. The side wall of the first sliding cavity has a plurality of annular mounting grooves. The moving contact assembly includes a moving contact slidably disposed within the first sliding cavity and a plurality of moving contact springs respectively disposed within the mounting groove; and The transmission assembly includes a crank arm, a first rotating shaft fixed to one end of the crank arm, a second rotating shaft fixed to one end of the crank arm, a connecting plate rotatably connected to the second rotating shaft, and a slider rotatably connected to the other end of the connecting plate. The slider is slidably disposed in a second sliding cavity. The other end of the connecting plate is rotatably connected to the moving contact. The first rotating shaft is used to connect to the output shaft of the operating mechanism.

2. The moving contact device according to claim 1, characterized in that, The first sliding direction is perpendicular to the second sliding direction.

3. The moving contact device according to claim 1, characterized in that, The moving contact assembly includes at least one guide sleeve, and the sidewall of the first sliding cavity is further provided with at least one annular guide groove. The guide sleeve is fitted onto the moving contact and disposed within the guide groove.

4. The moving contact device according to claim 1, characterized in that, The moving conductor includes a conductor body and a guide flange. The conductor body has an inwardly recessed mounting surface on its side. The mounting surface has a flange hole. The guide flange is inserted into the flange hole and fixed to the mounting surface. The second sliding cavity is formed in the guide flange. The guide flange includes a flange body and a limiting plate fixed to the flange body. The flange body has the second sliding cavity. The limiting plate has a limiting boss. The limiting boss is disposed inside or outside the second sliding cavity.

5. The moving contact device according to claim 4, characterized in that, The conductor body includes a mounting portion, a main body portion, and a transition portion connecting the mounting portion and the main body portion. The mounting portion has an outwardly protruding frustum, and the transition portion includes a plurality of arc segments connected in sequence. The mounting plane is disposed on the main body portion.

6. The moving contact device according to any one of claims 1 to 5, characterized in that, The side wall of the first sliding cavity is provided with a foreign object collection groove, which is connected to the mounting groove.

7. The moving contact device according to any one of claims 1 to 5, characterized in that, The moving contact includes a contact body and a moving arc contact. The front end of the contact body has an embedding groove, and the moving arc contact is fixed in the embedding groove. The connecting plate is rotatably connected to the contact body. The moving arc contact has an inwardly concave arc-shaped surface. The moving contact assembly also includes a pin. The moving contact also includes a pair of extension arms connected to the contact body. The extension arms have pin holes, and the pin is inserted into the pin holes. The connecting plate is rotatably connected to the pin.

8. The moving contact device according to claim 7, characterized in that, The pin includes a limiting section, a rectangular section, and a cylindrical section connected in sequence; one of the extension arms has a rectangular hole and the other extension arm has a circular hole, the rectangular section is inserted into the rectangular hole and the cylindrical section is inserted into the circular hole.

9. The moving contact device according to any one of claims 1 to 5, characterized in that, The connecting plate has a bevel on the side near the moving contact assembly.

10. A disconnecting switch, characterized in that, include: The moving contact device as described in any one of claims 1 to 9; A stationary contact device, wherein the stationary contact device is disposed on one side of the moving contact device; as well as An operating mechanism, wherein the output shaft of the operating mechanism is drivably connected to the first rotating shaft of the moving contact device.

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