Vacuum parallel switch device and switch equipment

Abstract

The invention relates to the technical field of switch devices, and particularly discloses a vacuum parallel switch device and switch equipment. The vacuum parallel switch device comprises an isolation contact, an isolation disconnecting link, a vacuum arc extinguishing mechanism and a transmission mechanism. The transmission mechanism comprises a transmission piece, a sliding piece, a first elastic piece and a tripping piece. The isolation disconnecting link can rotate along a first rotation direction to be separated from and far away from the isolation contact, and in the process, the transmission part is driven to rotate, so that the transmission part drives the first lock catch to be gradually close to the second lock catch while driving the moving contact to be gradually separated from the static contact, and after the moving contact and the static contact are separated, the first lock catch is locked to the second lock catch; and the isolation disconnecting link can also rotate along a second rotation direction to approach and be jointed with the isolation contact, and can push the tripping piece to move in a process from beginning to contact with the isolation contact to rotating in place, so that the tripping piece drives the second lock catch to be separated from the first lock catch. The vacuum parallel switch device is good in safety of switching-on and switching-off operation.

Description

Technical Field

[0001] The present invention relates to the technical field of switch devices, and in particular to a vacuum parallel switch device and a switch equipment. Background Art

[0002] SF6 gas has excellent arc-extinguishing and insulating properties and is widely used in medium- and high-voltage switchgear. However, SF6 is a strong greenhouse gas and produces toxic gases during the disconnection process. Therefore, it is gradually replaced by air. However, air has poor insulating properties, making the arc generated when the switch is disconnected difficult to extinguish. The violent combustion of the arc can easily lead to fire risks.

[0003] Therefore, the disconnection scheme for load switches widely adopts a vacuum interrupter and knife switch in parallel, while also using environmentally friendly gas (air) insulation. This scheme allows the current to flow normally through the knife switch during closing, and the vacuum interrupter to interrupt the current during opening, effectively extinguishing the arc. During the opening and closing process of the load switch, the drive of the vacuum interrupter is usually completed by the cooperation between the knife switch and the transmission mechanism. Traditional transmission mechanisms only have simple transmission functions. When the knife switch and transmission mechanism are separated, the vacuum interrupter will engage under the action of the self-closing force. This poses a risk of discharge when the knife switch is rotated to a position close to the transmission mechanism during closing.

[0004] Therefore, it is urgent to propose a vacuum parallel switch device and a switch equipment to solve the above technical problems. Summary of the Invention

[0005] According to one aspect of the present invention, the present invention provides a vacuum parallel switch device, which can transfer current to a vacuum arc extinguishing mechanism through a transmission mechanism to extinguish the arc through the vacuum arc extinguishing mechanism, thereby improving the safety and reliability of the opening operation, and can achieve opening maintenance after vacuum arc extinguishing, avoiding the risk of discharge between the isolation knife switch and the transmission mechanism, and improving the safety and reliability of the closing operation.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] Vacuum parallel switch device, comprising:

[0008] Isolating contacts;

[0009] an isolating switch rotatable in a first rotational direction to disengage the isolating contacts, and rotatable in a second rotational direction to engage with the isolating contacts;

[0010] A vacuum interrupter mechanism comprises an insulating housing and a vacuum interrupter chamber installed in the insulating housing, wherein a static contact and a moving contact are provided in the vacuum interrupter chamber, and the static contact is electrically connected to the isolating contact;

[0011] A transmission mechanism comprising a transmission member, a sliding member, a first elastic member, and a release member, wherein the transmission member is rotatably connected to the insulating housing, one end of the transmission member is hinged to the moving contact, and the other end is provided with a first lock catch, the sliding member is slidably assembled to the insulating housing, and the sliding member is provided with a second lock catch, the first elastic member is configured to always have a tendency to pull the sliding member toward the first lock catch, one end of the release member is connected to the sliding member, and the release member can pull the sliding member away from the first lock catch when driven;

[0012] The isolating knife switch is able to contact the transmission member during the process of rotating along the first rotation direction, and drive the transmission member to rotate, so that the transmission member drives the moving contact and the static contact to gradually separate while also driving the first lock catch to gradually approach the second lock catch, and after the moving contact and the static contact are completely separated, the first lock catch is locked to the second lock catch, so that the transmission member drives the moving contact and the static contact to remain separated;

[0013] During the rotation of the isolation knife switch along the second rotation direction, it first engages with the isolation contact, and then continues to rotate to contact the tripping member and drive the tripping member to move, so that the tripping member pulls the sliding member away from the first lock buckle, thereby separating the second lock buckle from the first lock buckle.

[0014] Optionally, a locking block is provided at the other end of the transmission member, the first locking buckle is a slot provided on the locking block, a first arc surface is provided on a side wall of the locking block close to the sliding member, and the first arc surface is smoothly connected to the slot;

[0015] The second lock buckle is a locking protrusion provided at one end of the sliding member, the sliding member is provided with a guide block, and the side wall of the guide block close to the locking block is provided with a second arc surface, and the second arc surface is smoothly connected to the locking protrusion;

[0016] During the process of the locking block rotating toward the sliding member, the first arc surface can cooperate with the second arc surface to push the sliding member to move in the direction away from the slot. After the slot moves into place, the first elastic member pulls the sliding frame to make the locking protrusion engage in the slot.

[0017] Optionally, the insulating housing is provided with a support arm, the support arm is provided with a slide rail, the sliding member includes a sliding frame, the sliding frame is provided with a slide groove, and the slide groove is slidably connected to the slide rail;

[0018] One end of the sliding frame in the sliding direction is provided with the second lock buckle, and the other end of the sliding frame in the sliding direction is provided with a connecting beam, and the connecting beam is connected to the release member.

[0019] Optionally, a guide groove is further provided on the support arm, the guide groove is connected to the slide rail, and a guide arm is provided on the sliding frame, and the end of the guide arm is slidably connected to the guide groove; and / or, a connecting portion is provided on the sliding frame, one end of the first elastic member is connected to the connecting portion, and the other end is connected to the insulating shell.

[0020] Optionally, the tripping member includes a first tripping member and a second tripping member, the first tripping member and the second tripping member are both rotatably connected to the isolation contact, one end of the first tripping member is movably connected to the sliding member, and the other end slides against the first end of the second tripping member, and the second end of the second tripping member is used to cooperate with the isolation knife switch;

[0021] During the rotation of the isolation knife gate along the second rotation direction, it can contact the second end of the second release member and push the second release member to rotate, so that the first end of the second release member drives the first release member to rotate, and then the first release member pulls the sliding member away from the first lock.

[0022] Optionally, there are two first tripping members, which are respectively arranged on opposite sides of the isolation contact;

[0023] The second tripping member includes two tripping arms and an unlocking portion connecting the two tripping arms. The two tripping arms are arranged on opposite sides of the isolation contact and are both rotatably connected to the isolation contact. The tripping arms are arranged in a one-to-one correspondence with the first tripping member. The other end of the first tripping member slides against the corresponding tripping arm. The unlocking portion is close to the isolation knife switch and is used to cooperate with the isolation knife switch.

[0024] Optionally, the second tripping member is connected to a second elastic member, and the second tripping member has an avoidance position and a tripping position. The second elastic member is configured to always have a tendency to push the second tripping member to rotate from the tripping position to the avoidance position. When the second tripping member is in the avoidance position, the second locking member can be locked with the first locking member. During the rotation of the isolation knife gate along the second rotation direction, the second tripping member can be driven to move from the avoidance position to the tripping position, so that the second tripping member drives the first tripping member to rotate, and then the first tripping member pulls the sliding member away from the first locking member.

[0025] Optionally, one end of the transmission member provided with the first lock is electrically connected to the moving contact through a wire.

[0026] Optionally, the vacuum parallel switch device also includes a third elastic member, one end of which is connected to the transmission member, and the other end is connected to the insulating shell, and the third elastic member is configured to always have a tendency to push the first lock to rotate in a direction away from the second lock.

[0027] Optionally, a first conductive arm and a second conductive arm are provided at the other end of the transmission member, and elastic conductive members are provided on opposite sides of the first conductive arm;

[0028] The isolation knife switch includes two conductive plates arranged at intervals, and the conductive plates are arranged in a one-to-one correspondence with the elastic conductive parts. During the rotation of the isolation knife switch along the first rotation direction, the conductive plates first slide and electrically connect to the corresponding elastic conductive parts until they are separated from the isolation contacts. After that, the two conductive plates contact the second conductive support arms at the same time, and push the transmission member to rotate through the second conductive support arms.

[0029] Optionally, the second conductive arm is rotatably connected to the transmission member, and the second conductive arm has a first working position and a second working position. During the cooperation between the two conductive plates and the second conductive arm, the second conductive arm can be driven to rotate from the first working position to the second working position. The second conductive arm is connected to the fourth elastic member, and the fourth elastic member is configured to always have a tendency to push the second conductive arm to rotate from the second working position to the first working position.

[0030] According to another aspect of the present invention, the present invention further provides a switchgear, comprising a cabinet and a vacuum parallel switch device according to any one of the above technical solutions, wherein the vacuum parallel switch device is arranged in the cabinet.

[0031] The beneficial effects of the present invention are:

[0032] The present invention provides a vacuum parallel switch device, comprising an isolating contact, an isolating knife switch, a vacuum arc extinguishing mechanism and a transmission mechanism. In the process of the isolating knife switch rotating along a first rotation direction to disengage and move away from the isolating contact, the isolating knife switch will first contact an end of the transmission member provided with a first lock buckle, transfer the current to the vacuum arc extinguishing mechanism through the transmission member, and then continue to rotate and drive the transmission member to rotate. The rotation of the transmission member will drive the moving contact and the static contact to gradually separate, so that the arc is generated in the vacuum arc extinguishing chamber, and the arc is extinguished by vacuum, thereby improving the safety and reliability of the opening operation. At the same time, in the process of the moving contact and the static contact gradually separating, the first lock buckle gradually approaches the second lock buckle, and after the moving contact and the static contact are completely separated (the moving contact moves to the point of contact with the static contact), ... The distance between the heads is the specified opening distance), the first lock catch and the second lock catch are locked. The locking of the first lock catch and the second lock catch will keep the transmission member stationary, and then the transmission member drives the moving contact and the static contact to remain separated, so as to realize the opening maintenance of the vacuum arc extinguishing mechanism, and the opening state of the vacuum extinguishing mechanism will not be released until the isolating knife switch is rotated along the second rotation direction to engage with the isolating contact. With this arrangement, when the isolating knife switch is closed and rotated to a position closer to the vacuum arc extinguishing mechanism, discharge will not occur between the vacuum arc extinguishing mechanism and the vacuum arc extinguishing mechanism because the vacuum arc extinguishing mechanism is in the opening state, thereby improving the safety and reliability of the closing operation.

[0033] The vacuum arc extinguishing mechanism is kept open by locking the first lock buckle and the second lock buckle, and the first lock buckle and the second lock buckle are unlocked by cooperating with the isolation knife switch and the tripping piece. The control is convenient and smooth, and the structure is simple.

[0034] The provision of the first elastic member can not only ensure the reliability of the locking of the first lock buckle and the second lock buckle, but also achieve the reset of the second lock buckle after being unlocked, thereby ensuring the reliability of the cooperation between the second lock buckle and the first lock buckle.

[0035] The present invention also provides a switchgear comprising a cabinet and the aforementioned vacuum parallel switch device. Due to the adoption of the aforementioned vacuum parallel switch device, the switchgear has better safety and reliability in opening and closing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of a vacuum parallel switch device provided in an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the cooperation between the sliding member, the first release member and the second release member provided in an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the first lock buckle and the second lock buckle being locked together according to an embodiment of the present invention;

[0039] Figure 4-Figure 7A schematic diagram of the opening process of a vacuum parallel switch device provided in an embodiment of the present invention;

[0040] Figure 8 and Figure 9 A schematic diagram of the closing process of a vacuum parallel switch device provided in an embodiment of the present invention.

[0041] In the picture:

[0042] 10. Main busbar; 20. Isolation spindle; 30. Casing;

[0043] 100. Isolating contacts;

[0044] 200, vacuum arc extinguishing mechanism; 210, insulating housing; 211, support arm; 2111, guide groove; 220, static contact; 230, moving contact;

[0045] 300, transmission mechanism; 310, transmission member; 311, locking block; 3111, first locking catch; 3112, first arc surface; 320, sliding member; 321, sliding frame; 3211, sliding groove; 322, second locking catch; 323, connecting beam; 324, guide arm; 325, connecting portion; 326, guide block; 3261, second arc surface; 327, first conductive arm; 3271, groove; 328, second conductive arm; 330, first elastic member; 340, release member; 341, first release member; 342, second release member; 3421, unlocking portion; 3422, release arm; 350, wire;

[0046] 400, isolation switch;

[0047] 500, third elastic member;

[0048] 600. Insulation protective cover. DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0052] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0053] This embodiment provides a vacuum parallel switch device, which can transfer current to a vacuum arc extinguishing mechanism through a transmission mechanism, and extinguish the arc through the vacuum arc extinguishing mechanism, thereby improving the safety and reliability of the opening operation, and can achieve opening maintenance after vacuum arc extinguishing, avoiding the risk of discharge between the isolation knife switch and the transmission mechanism, and improving the safety and reliability of the closing operation.

[0054] Specifically, if Figures 1-9 As shown, the vacuum parallel switch device includes an isolating contact 100 , a vacuum arc extinguishing mechanism 200 , a transmission mechanism 300 and an isolating knife switch 400 .

[0055] The isolating switch 400 can rotate in a first rotational direction to disengage and move away from the isolating contact 100, and can rotate in a second rotational direction to move closer to and engage with the isolating contact 100. It will be understood that when the isolating switch 400 engages with the isolating contact 100, the main circuit current is conducted, and the vacuum parallel switch device is closed; when the isolating switch 400 disengages from the isolating contact 100, the main circuit current is disconnected. It will be understood that the first rotational direction is opposite to the second rotational direction. In this embodiment, the first rotational direction is counterclockwise, and the second rotational direction is clockwise.

[0056] The vacuum interrupter mechanism 200 includes an insulating housing 210 and a vacuum interrupter chamber mounted within the insulating housing 210. A static contact 220 and a movable contact 230 are disposed within the vacuum interrupter chamber. The static contact 220 is electrically connected to the isolating contact 100. When the vacuum parallel switch device is opened, the current is transferred to the vacuum interrupter mechanism 200 via the isolating knife switch 400. The vacuum interrupter mechanism 200 extinguishes the arc generated during opening, thereby ensuring operational safety even when air is used as the insulating gas. In one possible embodiment, the static contact 220 can be electrically connected to the isolating contact 100 via the main busbar 10. In other embodiments, the electrical connection between the static contact 220 and the isolating contact 100 can be other, as required. It is understood that the insulating housing 210 serves as an insulating mounting bracket to facilitate assembly of the vacuum interrupter mechanism 200.

[0057] The transmission mechanism 300 includes a transmission member 310, a sliding member 320, a first elastic member 330, and a release member 340. The transmission member 310 is rotatably connected to the insulating housing 210. One end of the transmission member 310 is hinged to the moving contact 230, and the other end is provided with a first lock 3111. The sliding member 320 is slidably assembled on the insulating housing 210 and provided with a second lock 322. The first elastic member 330 is configured to always have a tendency to pull the sliding member 320 toward the first lock 3111. One end of the release member 340 is connected to the sliding member 320, and the release member 340 can pull the sliding member 320 away from the first lock 3111 when driven.

[0058] The working principle of the vacuum parallel switch device is as follows:

[0059] When the isolation switch 400 rotates in the first rotation direction to disengage and move away from the isolation contact 100, the isolation switch 400 will first contact the end of the transmission member 310 provided with the first lock 3111, and transfer the current to the vacuum interrupter mechanism 200 through the transmission member 310. As the isolation switch 400 continues to rotate, the isolation switch 400 will drive the transmission member 310 to rotate ( Figure 1The transmission member 310 rotates counterclockwise), so that the transmission member 310 pulls the moving contact 230 and the static contact 220 in the vacuum arc extinguishing mechanism 200 to gradually separate. When the moving contact 230 and the static contact 220 are separated, an arc is generated. Since the arc is generated in the vacuum arc extinguishing mechanism 200, it can be extinguished by vacuum. Compared with the prior art in which the arc is generated between the isolating knife switch 400 and the isolating contact 100 and is extinguished by air, the arc extinguishing effect is better, thereby improving the safety and reliability of the opening operation of the vacuum parallel switch device. As the transmission member 310 pulls the moving contact 230 and the static contact 220 apart, the first latch 3111 on the transmission member 310 gradually approaches the second latch 322 until the moving contact 230 and the static contact 220 are completely separated (the moving contact 230 moves to a predetermined distance from the static contact 220). The first latch 3111 and the second latch 322 then lock. The isolating switch 400 then continues to rotate and separates from the transmission member 310. That is, after the first latch 3111 and the second latch 322 lock, the transmission member 310 remains stationary, allowing the transmission member 310 to pull the moving contact 230 and the static contact 220 apart, thereby maintaining the vacuum interrupter 200 in a closed state. Furthermore, under the action of the first elastic member 330, the reliability of the locking between the first latch 3111 and the second latch 322 is relatively good.

[0060] During the process of the isolation knife gate 400 rotating along the second rotation direction and approaching and engaging with the isolation contact 100, due to the locking of the first lock buckle 3111 and the second lock buckle 322, the isolation knife gate 400 will never contact the transmission member 310, and the isolation knife gate 400 will first engage with the isolation contact 100, and then as the isolation knife gate 400 continues to rotate, the isolation knife gate 400 will contact the release member 310 and drive the release member 310 to move, so that the release member 340 pulls the sliding The sliding member 320 moves away from the first lock catch 3111, thereby separating the second lock catch 322 on the sliding member 320 from the first lock catch 3111. After the second lock catch 322 separates from the first lock catch 3111, the moving contact 230 gradually approaches the static contact 220 under the action of the self-closing force and finally engages with the static contact 220. During the process of the moving contact 230 engaging with the static contact 220, the transmission member 310 is driven to rotate, causing the transmission member 310 to return to its initial position for the next opening. In other words, the opening state of the vacuum interrupter mechanism 200 is not released until the isolation knife switch 400 engages with the isolation contact 100. With this arrangement, when the isolation knife switch 400 is rotated to a position closer to the vacuum interrupter mechanism 200 during the closing operation, no discharge will occur between the isolation knife switch 400 and the vacuum interrupter mechanism 200 because the vacuum interrupter mechanism 200 is in the opening state, thereby improving the safety and reliability of the closing operation.

[0061] The vacuum arc extinguishing mechanism 200 is kept open by locking the first lock buckle 3111 and the second lock buckle 322, and the first lock buckle 3111 and the second lock buckle 322 are unlocked by cooperating with the isolation knife switch 400 and the release member 340. The control is convenient and smooth, which reduces the risk of closing failure of the vacuum arc extinguishing mechanism 200 and has a simple structure.

[0062] It can be understood that when the release member 340 is not subjected to the thrust of the isolation knife gate 400, the sliding member 320 will be pulled toward the first lock buckle 3111 under the action of the first elastic member 330, so that the second lock buckle 322 moves to the ready position for locking with the first lock buckle 3111, and when the first lock buckle 3111 and the second lock buckle 322 are locked, the position of the second lock buckle 322 remains unchanged, thereby ensuring the reliability of the locking of the first lock buckle 3111 and the second lock buckle 322.

[0063] It is understandable that the first elastic member 330 may be, but is not limited to, a tension spring.

[0064] It is understood that in one possible embodiment, the isolation knife switch 400 may first contact the release member 340 and drive the release member 340 to move during the process of rotating in the second rotation direction. However, it is necessary to ensure that the second lock catch 322 always remains locked with the first lock catch 3111 before the isolation knife switch 400 engages with the isolation contact 100. In other words, the second lock catch 322 is unlocked from the first lock catch 3111 only after the isolation knife switch 400 engages with the isolation contact 100.

[0065] It is understandable that since the transmission member 310 plays the role of current transfer, the transmission member 310 needs to be made of conductive material. However, since the transmission member 310 is hinged to the movable contact 230, the contact area between the transmission member 310 and the movable contact 230 may change constantly during the process of the transmission member 310 rotating and pulling the movable contact 230, which may affect the stability of the current. Based on this, continue to refer to Figure 1 The transmission member 310 is provided with one end of the first lock buckle 3111 which can be electrically connected to the moving contact 230 through a wire 350. With this arrangement, even if the contact area between the transmission member 310 and the moving contact 230 changes, the current can be stably circulated through the wire 350, thereby ensuring the stability of the current.

[0066] Optionally, the transmission member 310 may be rotatably connected to the insulating housing 210 via a fixing pin, or the transmission member 310 may be hinged to the moving contact 230 via a fixing pin. Figure 1 In this embodiment, the transmission member 310 rotates around point a.

[0067] Further, see Figure 1-Figure 3The other end of the transmission member 310 is provided with a locking block 311. A first locking catch 3111 is a slot provided on the locking block 311. A first curved surface 3112 is provided on the side wall of the locking block 311 near the sliding member 320. The first curved surface 3112 smoothly connects with the slot. A second locking catch 322 is a latching protrusion provided on one end of the sliding member 320. The sliding member 320 is also provided with a guide block 326. A second curved surface 3261 is provided on the side wall of the guide block 326 near the locking block 311. The second curved surface 3261 smoothly connects with the latching protrusion.

[0068] When the locking block 311 is in the unlocking state, the first arc surface 3112 and the second arc surface 3261 are in the unlocking state, and ...11

[0069] The first lock catch 3111 and the second lock catch 322 are locked together by the engagement of the engagement groove and the engagement projection, resulting in a simple structure and ease of processing. Furthermore, the provision of the first curved surface 3112 and the second curved surface 3261 can reduce the resistance to the engagement between the locking block 311 and the sliding member 320, thereby facilitating smoother locking between the first lock catch 3111 and the second lock catch 322.

[0070] Further, see Figure 1-Figure 3 The insulating housing 210 is provided with a support arm 211, which is provided with a slide rail (not shown). The sliding member 320 includes a sliding frame 321, which is provided with a slide groove 3211. The slide groove 3211 is slidably connected to the slide rail. The slide groove 3211 on the sliding frame 321 cooperates with the slide rail to achieve sliding assembly of the sliding member 320 and the insulating housing 210, resulting in a simple structure and excellent sliding smoothness. Optionally, in this embodiment, the slide rail extends horizontally.

[0071] Optionally, continue with Figure 1-Figure 3 The sliding frame 321 has a second lock 322 at one end thereof in the sliding direction, and a connecting beam 323 at the other end thereof in the sliding direction. The connecting beam 323 is connected to the release member 340. The sliding member has a simple structure and is easy to process and assemble.

[0072] Optionally, continue with Figure 2In the solution where the second locking buckle 322 is a latching protrusion, the latching protrusion extends perpendicular to the sliding direction of the sliding frame 321 .

[0073] Further, see Figure 1-Figure 3 The support arm 211 is provided with a guide groove 2111 that communicates with the slide rail. The sliding frame 321 is provided with a guide arm 324, the end of which is slidably connected to the guide groove 2111. Specifically, the guide arm 324 can abut against two opposite groove walls of the guide groove 2111 along its own extension direction. In other words, the cooperation between the guide arm 324 and the guide groove 2111 can both guide the sliding movement of the slider 320 and limit the sliding stroke of the slider 320.

[0074] It can be understood that when the guide arm 324 abuts against the groove wall of the guide groove 2111 close to the first lock buckle 3111, the first lock buckle 3111 and the second lock buckle 322 are locked; when the guide arm 324 abuts against the groove wall of the guide groove 2111 away from the first lock buckle 3111, the second lock buckle 322 moves to the farthest distance from the first lock buckle 3111, and at this time the isolation knife gate 400 rotates into place.

[0075] Optionally, in this embodiment, a plurality of guide arms 324 are provided, and the plurality of guide arms 324 are spaced apart along a direction perpendicular to the sliding direction of the sliding frame 321. Providing a plurality of guide arms 324 is beneficial for improving the stability of the movement of the sliding frame 321 and improving the structural strength of the sliding frame 321.

[0076] Optionally, continue with Figure 1-Figure 3 The sliding frame 321 is provided with a connecting portion 325, one end of the first elastic member 330 is connected to the connecting portion 325, and the other end of the first elastic member 330 is connected to the insulating housing 210. The first elastic member 330 is fixed by the connecting portion 325 and the insulating housing 210, which has a simple structure and is easy to assemble.

[0077] Further, see Figure 2 In one possible embodiment, connecting portions 325 are provided on opposite sides of one end of the sliding frame 321 provided with the second locking catch 322, and each connecting portion 325 is provided with a corresponding first elastic member 330. Providing connecting portions 325 on opposite sides of the sliding frame 321 and using two first elastic members 330 to pull the sliding frame 321 improves the uniformity of the force applied to the sliding frame 320, thereby facilitating smoother and more stable sliding of the sliding frame 321.

[0078] In this embodiment, the sliding direction of the sliding frame 321 is its own length direction, and the connecting parts 325 are disposed at opposite ends of the sliding frame 321 in the width direction.

[0079] Optionally, in this embodiment, the connecting portion 325 includes a first shaft segment connected to the sliding frame 321 and a second shaft segment connected to the first shaft segment. The diameter of the second shaft segment is larger than that of the first shaft segment, and one end of the first elastic member 330 is suspended on the first shaft segment. This arrangement allows the second shaft segment and the sliding frame 321 to stop the first elastic member 330, thereby improving the reliability of the connection between the first elastic member 330 and the connecting portion 325.

[0080] Further, see Figure 1-Figure 3 The release member 340 includes a first release member 341 and a second release member 342. Specifically, the first release member 341 and the second release member 342 are both rotatably connected to the isolation contact 100. One end of the first release member 341 is movably connected to the sliding member 320, and the other end slides against the first end of the second release member 342. The second end of the second release member 342 is used to cooperate with the isolation switch 400.

[0081] Continue to see Figure 1 In this embodiment, the first release member 341 rotates around point b, and the second release member 342 rotates around point c.

[0082] The cooperation principle of the sliding member 320, the first release member 341 and the second release member 342 is as follows:

[0083] During the rotation of the isolating knife switch 400 in the second rotational direction, it first engages with the isolating contact 100, then continues to rotate to contact the second end of the second tripping member 342, pushing the second tripping member 342 to rotate about point c. This causes the first end of the second tripping member 342 to drive the first tripping member 341 to rotate about point b, thereby causing the first tripping member 341 to pull the sliding member 320 away from the first lock catch 3111. This movement of the sliding member 320 away from the first lock catch 3111 allows the second lock catch 322 on the sliding member 320 to separate from the first lock catch 3111. Subsequently, the moving contact 230, under the action of the self-closing force, engages with the static contact 220, pulling the transmission member 310 to rotate, causing the transmission member 310 to return to its initial position, facilitating the next opening.

[0084] It is understandable that during the process of the isolation knife switch 400 rotating along the second rotation direction, it can also first contact the second tripping member 342 and then engage with the isolation contact 100. However, it is necessary to ensure that after the isolation knife switch 400 is engaged with the isolation contact 100, the second tripping member 342 will drive the second lock 322 on the sliding member 320 to complete the separation from the first lock 3111 through the first tripping member 341, so as to ensure that the isolation knife switch 400 and the isolation contact 100 are engaged first, and then the vacuum arc extinguishing mechanism 200 is closed.

[0085] Optionally, continue with Figure 2In this embodiment, one end of the first release member 341 movably abuts against the connecting beam 323 and can be rotated to move the connecting beam 323. The cooperation between the first release member 341 and the connecting beam 323 allows the first release member 341 to slide by rotating the sliding frame 321, resulting in a simple structure and easy assembly.

[0086] Further, see Figure 2 and Figure 3 Two first tripping members 341 are provided, and the two first tripping members 341 are disposed on opposite sides of the isolation contact 100. The second tripping member 342 includes two tripping arms 3422 and an unlocking portion 3421 connecting the two tripping arms 3422. The two tripping arms 3422 are disposed on opposite sides of the isolation contact 100 and are both rotatably connected to the isolation contact 100. The tripping arms 3422 are arranged in a one-to-one correspondence with the first tripping members 341. The other end of the first tripping member 341 slides against the corresponding tripping arm 3422. The unlocking portion 3421 is close to the isolation switch 400 and is used to cooperate with the isolation switch 400. By providing two first tripping members 341 and two tripping arms 3422 cooperating with the first tripping members 341, on the one hand, the uniformity of the force applied to the sliding member 320 can be improved, thereby improving the stability and smoothness of the sliding of the sliding member 320; on the other hand, the reliability of the force transmission between the second tripping member 342 and the first tripping member 341 can be improved, thereby improving the reliability of the unlocking between the second lock 322 and the first lock 3111; on the other hand, the first tripping member 341 and the second tripping member 342 can both be made of insulating materials. In this way, the first tripping member 341 and the second tripping member 342 can provide insulation protection for the isolation contact 100.

[0087] Optionally, the second release member 342 is an integrated structure, which is easy to process and has high structural stability.

[0088] Optionally, the second tripping member 342 is connected to a second elastic member (not shown in the figure), and the second tripping member 342 has an avoidance position and a tripping position. The second elastic member is configured to always have a tendency to push the second tripping member 342 to rotate from the tripping position to the avoidance position.

[0089] Specifically, when the second tripping member 342 is in the avoidance position (eg Figure 5-Figure 7As shown), the second lock buckle 322 can be locked with the first lock buckle 3111. That is, at this time, the second tripping member 342 will not hinder the movement of the first tripping member 341. In this embodiment, when the second tripping member 342 is in the avoidance position, the first tripping member 341 can rotate clockwise around point b when the sliding member 320 is pulled to the left by the first elastic member 330; during the rotation of the isolation knife gate 400 along the second rotation direction, the second tripping member 342 can be driven to rotate from the avoidance position to the tripping position. When the second tripping member 342 is in the tripping position (as shown), the second tripping member 341 can rotate clockwise around point b when the sliding member 320 is pulled to the left by the first elastic member 330. Figure 1 As shown), the sliding member 320 drives the second lock buckle 322 to move to a position separated from the first lock buckle 3111.

[0090] That is, the second elastic member drives the second release member 342 to reset, so as to prevent the second release member 342 from interfering with the rotation of the first release member 341 and causing the sliding member 320 to be unable to slide toward the first lock buckle 3111 under the pull of the first elastic member 330 .

[0091] Alternatively, the second elastic member may be a torsion spring, the spiral portion of which may be sleeved on a fixing pin rotatably connecting the second tripping member 342 and the isolation contact 100 , the first torsion arm of the torsion spring may abut against the isolation contact 100 , and the second torsion arm may abut against the second tripping member 342 .

[0092] Optionally, continue with Figure 1 The vacuum parallel switch device also includes a third elastic member 500, one end of the third elastic member 500 is connected to the transmission member 310, and the other end is connected to the insulating shell 210. The third elastic member 500 is configured to always have a tendency to push the first lock 3111 to rotate in a direction away from the second lock 322. Specifically, when the first lock buckle 3111 on the transmission member 310 rotates toward the direction close to the second lock buckle 322, the transmission member 310 will compress the third elastic member 500. At this time, the third elastic member 500 accumulates elastic potential energy. When the second lock buckle 322 disengages from the first lock buckle 3111, the third elastic member 500 will release the elastic potential energy to push the transmission member 310 to rotate in the opposite direction. The rotation of the transmission member 310 will push the moving contact 230 to engage with the static contact 220, that is, the moving contact 230 is simultaneously subjected to the self-closing force and the pushing force of the transmission member 310, which improves the reliability of the engagement between the moving contact 230 and the static contact 220 and reduces the risk of failure of the vacuum arc extinguishing mechanism 200 to close.

[0093] It is understandable that the third elastic member 500 may be, but is not limited to, a compression spring.

[0094] Further, see Figure 1-Figure 3The other end of the transmission member 310 is provided with a first conductive arm 327 and a second conductive arm 328. Elastic conductive members (not shown) are provided on opposite sides of the first conductive arm 327. The isolation switch 400 includes two spaced apart conductive plates (not shown), which are provided in a one-to-one correspondence with the elastic conductive members.

[0095] Specifically, during the rotation of the isolation knife switch 400 along the first rotation direction, the conductive plate first slides and electrically connects to the corresponding elastic conductive member until the conductive plate is separated from the isolation contact 100. During this process, the isolation knife switch 400 gradually transfers the current to the vacuum arc extinguishing mechanism 200 through the transmission member 310 by being electrically connected to the elastic conductive member. When the isolation knife switch 400 is separated from the isolation contact 100, all the current is transferred to the vacuum arc extinguishing mechanism 200. That is, the process of the conductive plate and the elastic conductive member being electrically connected in a sliding manner is the process of current transfer, and at the same time, it can ensure that the isolation knife switch 400 moves to a safe distance from the isolation contact 100, thereby preventing the isolation knife switch 400 from being connected to the isolation contact 100 due to discharge. It is worth noting that during this process, the transmission member 310 does not rotate, and the moving contact 230 remains engaged with the static contact 220.

[0096] When the current is completely transferred and the distance between the isolating switch 400 and the isolating contact 100 is a safe distance, the two conductive plates simultaneously contact the second conductive arm 328 and push the transmission member 310 to rotate through the second conductive arm 328, so that the transmission member 310 drives the moving contact 230 to separate from the static contact 220.

[0097] It is understood that during the interaction between the isolation switch 400 and the first conductive arm 327, the first conductive arm 327 is sandwiched between the two conductive plates. Therefore, by designing the distance between the two conductive plates, the conductive plates can exert a certain pressure on the elastic conductive member. The elastic force of the elastic conductive member ensures the reliability of the electrical connection between the conductive plates. Furthermore, the elastic conductive member can also hinder the movement of the conductive plates, preventing them from moving too quickly and thus ensuring the stability of current transfer.

[0098] It is understandable that the length of the elastic conductive member can be designed according to the safe distance between the isolation switch 400 and the isolation contact 100 .

[0099] Optionally, continue with Figure 3 , grooves 3271 can be provided on opposite sides of the first conductive arm 327 , and the elastic conductive member can be installed in the grooves 3271 .

[0100] Optionally, in a possible embodiment, the elastic conductive member is a watchband contact finger, and contacts (not shown in the figure) are provided on the opposite surfaces of the two conductive plates, and the contacts can be slidably electrically connected to the watchband contact finger.

[0101] Further, see Figure 1 、 Figure 3 and Figure 6 The second conductive arm 328 is rotatably connected to the transmission member 310. The second conductive arm 328 has a first working position and a second working position. During the cooperation between the two conductive plates and the second conductive arm 328, the second conductive arm 328 can be driven to rotate from the first working position to the second working position. The second conductive arm 328 is connected to the fourth elastic member (not shown in the figure). The fourth elastic member is configured to always have a tendency to push the second conductive arm 328 to rotate from the second working position to the first working position.

[0102] That is, when the isolation switch 400 is not in contact with the second conductive arm 328, the second conductive arm 328 remains in the first working position under the action of the fourth elastic member. After the isolation switch 400 contacts the second conductive arm 328, as the isolation switch 400 further rotates in the first rotational direction, the isolation switch 400 pushes the second conductive arm 328 from the first working position to the second working position. At the same time, driven by the second conductive arm 328, the transmission member 310 also rotates, causing the first locking catch 3111 to approach the second locking catch 322. When the second conductive arm 328 rotates to the second working position, the vacuum interrupter mechanism 200 is opened, and the first locking catch 3111 is locked with the second locking catch 322. Afterwards, as the isolation knife switch 400 further rotates along the first rotation direction, the isolation knife switch 400 will separate from the second conductive branch arm 328. At this time, the second conductive branch arm 328 will rotate from the second working position to the first working position under the action of the fourth elastic member, preventing the isolation knife switch 400 from contacting the second conductive branch arm 328 during the process of rotating along the second rotation direction and contacting the isolation contact 100.

[0103] Optionally, the fourth elastic member may be a torsion spring, the spiral portion of which may be sleeved on the rotating shaft of the second conductive arm 328 , the first torsion arm of the torsion spring may abut against the transmission member 310 , and the second torsion arm may abut against the second conductive arm 328 .

[0104] Optionally, continue with Figure 1 The isolation switch 400 is connected to the isolation spindle 20, which is used to drive the isolation switch 400 to rotate. The insulation shield 600 is set outside the isolation spindle 20 and part of the isolation switch 400. The insulation shield 600 can play a role in strengthening insulation and reducing the discharge risk of the isolation switch 400.

[0105] In this embodiment, during the rotation of the isolation knife switch 400 along the second rotation direction, the insulating protective cover 600 will contact the second tripping member 342 and push the second tripping member 342 to rotate, so that the second tripping member 342 drives the first tripping member 341 to rotate, so as to drive the sliding member 320 to slide in the direction away from the first lock buckle 3111 through the first tripping member 341, thereby separating the second lock buckle 322 from the first lock buckle 3111.

[0106] In order to facilitate understanding, the working process of the vacuum parallel switch device is briefly introduced:

[0107] Opening process:

[0108] like Figure 1 As shown, the isolation switch 400 is in a position engaged with the isolation contact 100, the main circuit is connected, the vacuum interrupter mechanism 200 is in a closed state, and the isolation switch 400 abuts against the unlocking portion 3421 to limit the second tripping member 342, so that the second tripping member 342 remains in the tripped position, thereby keeping the second lock catch 322 in a position separated from the first lock catch 3111;

[0109] like Figure 4 As shown, the isolating switch 400, driven by the isolating spindle 20, rotates counterclockwise until the conductive plate of the isolating switch 400 just contacts the elastic conductive member on the first conductive arm 327. At this point, the isolating switch 400 still partially maintains contact with the isolating contact 100, and a portion of the main circuit current is transferred to the vacuum interrupter mechanism 200, forming a parallel circuit. Furthermore, during this process, the isolating switch 400 gradually moves away from the second release member 342. Therefore, the second latch 322 moves leftward under the pull of the first elastic member 330, and the second release member 342 rotates to the avoidance position under the action of the second elastic member.

[0110] like Figure 5 As shown, as the isolating knife switch 400 further rotates in the counterclockwise direction, the conductive plate of the isolating knife switch 400 slides and electrically connects with the elastic conductive member on the first conductive arm 327 until the isolating knife switch 400 is completely separated from the isolating contact 100. At this time, the main circuit current is completely transferred to the vacuum arc extinguishing mechanism 200 branch, completing the current transfer. In addition, during this process, the second lock buckle 322 continues to move to the left under the pull of the first elastic member 330 until the isolating knife switch 400 is separated from the unlocking portion 3421. When the first elastic member 330 has no elastic deformation, the second lock buckle 322 no longer moves to the left. At this time, the second arc surface 3261 can be in contact with the first arc surface 3112, or it can not be in contact. It can be set according to actual needs. It is worth noting that in the process of the main circuit current transferring to the vacuum arc extinguishing mechanism 200 branch, the transmission member 310 remains stationary, that is, the vacuum arc extinguishing mechanism 200 remains in a closed state;

[0111] like Figure 6 As shown, as the isolation knife gate 400 rotates further in the counterclockwise direction, the conductive plate of the isolation knife gate 400 contacts the second conductive support arm 328 and pushes the second conductive support arm 328 to rotate from the first working position to the second working position. At the same time, the transmission member 310 rotates in the counterclockwise direction under the drive of the second conductive support arm 328. The counterclockwise rotation of the transmission member 310 compresses the third elastic member 500 and drives the first lock buckle 3111 to squeeze the second lock buckle 322, forcing the second lock buckle 322 to move to the right until the conductive plate of the isolation knife gate 400 contacts the second conductive support arm 328. When the second conductive arm 328 is separated, the first lock catch 3111 rotates into place, the first arc surface 3112 separates from the second arc surface 3261, and the second lock catch 322 is engaged with the first lock catch 3111 under the action of the first elastic member 330. At this time, the movable contact 230 and the static contact 220 are completely separated, and the vacuum arc extinguishing mechanism 200 is opened. The arc generated by the opening is extinguished under the action of the vacuum, and the vacuum parallel switch device is opened. The second conductive arm 328 rotates from the second working position to the first working position under the action of the fourth elastic member.

[0112] like Figure 7 As shown, as the isolation knife switch 400 further rotates in the counterclockwise direction, the first lock buckle 3111 will remain locked with the second lock buckle 322, so that the vacuum arc extinguishing mechanism 200 remains in the open state.

[0113] Closing process:

[0114] like Figure 8 As shown, the isolation knife switch 400 rotates in a clockwise direction under the action of the isolation main shaft 20, gradually approaching the isolation contact 100. During this process, the isolation knife switch 400 never contacts the first conductive arm 327 and the second conductive arm 328. In addition, before engaging with the isolation contact 100, the isolation knife switch 400 may contact the second tripping member 342 and drive the second tripping member 342 to start rotating toward the tripping position, or it may not contact the second tripping member 342.

[0115] like Figure 9As shown, as the isolating knife switch 400 rotates further in the clockwise direction, the isolating knife switch 400 begins to engage with the isolating contact 100, and the isolating knife switch 400 will also push the second tripping member 342 to rotate toward the tripping position. During the rotation of the second tripping member 342 toward the tripping position, the first tripping member 341 is pushed to rotate counterclockwise. The counterclockwise rotation of the first tripping member 341 will pull the sliding member 320 to the right, causing the second lock buckle 322 on the sliding member 320 to move to the right and separate from the first lock buckle 3111. After the first lock buckle 3111 disengages from the second lock buckle 322, the transmission member 310 will return to the initial position under the action of the elastic force of the third elastic member 500 and the self-closing force of the moving contact 230, so as to facilitate the next opening, and the moving contact 230 will engage with the static contact 220 until the isolating knife switch 400 rotates into place, and the vacuum parallel switch device is closed.

[0116] This embodiment further provides a switch device, including a cabinet and the above-mentioned vacuum parallel switch device, wherein the vacuum parallel switch device is arranged in the cabinet.

[0117] Since the switchgear adopts the above-mentioned vacuum parallel switch device, the safety and reliability of opening and closing operations are better.

[0118] Optionally, continue with Figure 1 In this embodiment, both ends of the main busbar 10 are installed on the side walls of the cabinet through bushings 30 .

[0119] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Vacuum parallel switch device, characterized in that: include: Isolating contacts; an isolating switch rotatable in a first rotational direction to disengage the isolating contact and rotatable in a second rotational direction to engage with the isolating contact; A vacuum interrupter mechanism comprises an insulating housing and a vacuum interrupter chamber installed in the insulating housing, wherein a static contact and a moving contact are provided in the vacuum interrupter chamber, and the static contact is electrically connected to the isolating contact; A transmission mechanism comprising a transmission member, a sliding member, a first elastic member, and a release member, wherein the transmission member is rotatably connected to the insulating housing, one end of the transmission member is hinged to the moving contact, and the other end is provided with a first lock catch, the sliding member is slidably assembled to the insulating housing, and the sliding member is provided with a second lock catch, the first elastic member is configured to always have a tendency to pull the sliding member toward the first lock catch, one end of the release member is connected to the sliding member, and the release member can pull the sliding member away from the first lock catch when driven; The isolating knife switch is able to contact the transmission member during the process of rotating along the first rotation direction, and drive the transmission member to rotate, so that the transmission member drives the moving contact and the static contact to gradually separate while also driving the first lock catch to gradually approach the second lock catch, and after the moving contact and the static contact are completely separated, the first lock catch is locked to the second lock catch, so that the transmission member drives the moving contact and the static contact to remain separated; During the rotation of the isolation knife switch along the second rotation direction, it first engages with the isolation contact, and then continues to rotate to contact the tripping member and drive the tripping member to move, so that the tripping member pulls the sliding member away from the first lock buckle, thereby separating the second lock buckle from the first lock buckle.

2. The vacuum parallel switch device according to claim 1, characterized in that: A locking block is provided at the other end of the transmission member, the first locking buckle is a slot provided on the locking block, and a first arc surface is provided on the side wall of the locking block close to the sliding member, and the first arc surface is smoothly connected to the slot; The second lock buckle is a locking protrusion provided at one end of the sliding member, the sliding member is provided with a guide block, and the side wall of the guide block close to the locking block is provided with a second arc surface, and the second arc surface is smoothly connected to the locking protrusion; During the process of the locking block rotating toward the sliding member, the first arc surface can cooperate with the second arc surface to push the sliding member to move in the direction away from the slot. After the slot moves into place, the first elastic member pulls the sliding frame to make the locking protrusion engage in the slot.

3. The vacuum parallel switch device according to claim 1, characterized in that: The insulating shell is provided with a support arm, the support arm is provided with a slide rail, the sliding member includes a sliding frame, the sliding frame is provided with a slide groove, and the slide groove is slidably connected to the slide rail; One end of the sliding frame in the sliding direction is provided with the second lock buckle, and the other end of the sliding frame in the sliding direction is provided with a connecting beam, and the connecting beam is connected to the release member.

4. The vacuum parallel switch device according to claim 3, characterized in that: The support arm is further provided with a guide groove, the guide groove is communicated with the slide rail, the sliding frame is provided with a guide arm, the end of the guide arm is slidably connected to the guide groove; And / or, a connecting portion is provided on the sliding frame, one end of the first elastic member is connected to the connecting portion, and the other end is connected to the insulating shell.

5. The vacuum parallel switch device according to any one of claims 1 to 4, characterized in that: The release member includes a first release member and a second release member, wherein the first release member and the second release member are both rotatably connected to the isolation contact, one end of the first release member is movably connected to the sliding member, and the other end slides against the first end of the second release member, and the second end of the second release member is used to cooperate with the isolation switch; During the rotation of the isolation knife gate along the second rotation direction, it can contact the second end of the second release member and push the second release member to rotate, so that the first end of the second release member drives the first release member to rotate, and then the first release member pulls the sliding member away from the first lock.

6. The vacuum parallel switch device according to claim 5, characterized in that: There are two first tripping members, which are respectively arranged on opposite sides of the isolation contact; The second tripping member includes two tripping arms and an unlocking portion connecting the two tripping arms. The two tripping arms are arranged on opposite sides of the isolation contact and are both rotatably connected to the isolation contact. The tripping arms are arranged in a one-to-one correspondence with the first tripping member. The other end of the first tripping member slides against the corresponding tripping arm. The unlocking portion is close to the isolation knife switch and is used to cooperate with the isolation knife switch.

7. The vacuum parallel switch device according to claim 5, characterized in that: The second tripping member is connected to the second elastic member, and the second tripping member has an avoidance position and a tripping position. The second elastic member is configured to always have a tendency to push the second tripping member to rotate from the tripping position to the avoidance position. When the second tripping member is in the avoidance position, the second lock catch can be locked with the first lock catch. During the rotation of the isolation knife gate along the second rotation direction, the second tripping member can be driven to move from the avoidance position to the tripping position, so that the second tripping member drives the first tripping member to rotate, and then the first tripping member pulls the sliding member away from the first lock catch.

8. The vacuum parallel switch device according to any one of claims 1 to 4, characterized in that: One end of the transmission member provided with the first lock is electrically connected to the moving contact through a wire.

9. The vacuum parallel switch device according to any one of claims 1 to 4, characterized in that: The vacuum parallel switch device also includes a third elastic member, one end of which is connected to the transmission member, and the other end is connected to the insulating shell. The third elastic member is configured to always have a tendency to push the first lock to rotate in a direction away from the second lock.

10. The vacuum parallel switch device according to any one of claims 1 to 4, characterized in that: The other end of the transmission member is provided with a first conductive arm and a second conductive arm, and elastic conductive members are provided on opposite sides of the first conductive arm; The isolation knife switch includes two conductive plates arranged at intervals, and the conductive plates are arranged in a one-to-one correspondence with the elastic conductive parts. During the rotation of the isolation knife switch along the first rotation direction, the conductive plates first slide and electrically connect to the corresponding elastic conductive parts until they are separated from the isolation contacts. After that, the two conductive plates contact the second conductive support arms at the same time, and push the transmission member to rotate through the second conductive support arms.

11. The vacuum parallel switch device according to claim 10, characterized in that: The second conductive support arm is rotatably connected to the transmission member, and the second conductive support arm has a first working position and a second working position. During the cooperation between the two conductive plates and the second conductive support arm, the second conductive support arm can be driven to rotate from the first working position to the second working position. The second conductive support arm is connected to the fourth elastic member, and the fourth elastic member is configured to always have a tendency to push the second conductive support arm to rotate from the second working position to the first working position.

12. A switchgear, characterized in that The invention comprises a cabinet and a vacuum parallel switch device according to any one of claims 1 to 11, wherein the vacuum parallel switch device is arranged in the cabinet.

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