A circuit breaker arc quenching device

Abstract

The application relates to the technical field of circuit breakers, in particular to a circuit breaker arc extinguishing device which comprises a circuit breaker and an insulating partition plate, the incoming line port and the outgoing line port of the circuit breaker are respectively provided with transverse clamping grooves and longitudinal through grooves communicated with the transverse clamping grooves, a limiting plate is arranged on the insulating partition plate, the limiting plate is in sliding fit with the transverse clamping grooves, part of the insulating partition plate is in sliding fit with the longitudinal through grooves, the inner wall of the transverse clamping groove is provided with a deviation rectifying assembly, the inner wall of the longitudinal through groove is provided with a driving assembly, the deviation rectifying assembly and the driving assembly are connected through a linkage assembly, the synchronous installation and deviation rectification of the insulating partition plate are realized, the problem that the limiting plate is stuck in the inner wall of the transverse clamping groove due to unstable hand pushing force and needs to be repeatedly adjusted and inserted is effectively avoided, the installation time is greatly shortened, and the on-site assembly efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, and in particular to a circuit breaker arc extinguishing device. Background Technology

[0002] Circuit breakers, as indispensable electrical protection devices in low-voltage power distribution systems, are widely used in industrial, commercial, and residential power distribution. Installing insulating partitions between phases or terminals of circuit breakers is a common technical means to increase electrical clearances and creepage distances, preventing phase-to-phase breakdown short circuits and other faults. The insulating partitions also prevent metallic foreign objects from falling onto adjacent current-carrying busbars and causing bridging short circuits, which is of great significance for ensuring the safe operation of circuit breakers.

[0003] In the prior art, there are various ways to connect insulating partitions to circuit breakers. For example, patent publication number CN203070946U discloses an anti-creep phase insulating partition for an ME circuit breaker. This insulating partition reduces the gap between itself and adjacent insulating components by increasing its height and width, thereby achieving relative isolation of the exposed parts of each phase conductor. Another example is patent publication number CN212934474U, which discloses a partition device for a vacuum circuit breaker. The lower end of the partition is provided with a plug with a protrusion, and the housing is provided with a corresponding slot. The partition is securely installed by the plug-in cooperation between the plug and the slot and the locking mechanism.

[0004] However, the aforementioned existing technologies still have shortcomings. Most current circuit breaker insulation plate installation structures employ simple methods such as slider-slot connections and plug-in-slot connections. In the confined space and dimly lit conditions inside distribution cabinets, operators often struggle to quickly align the insulation plates and their limiting structures into the corresponding slots or grooves when manually installing the insulation plates onto the circuit breaker. More critically, after the limiting plate enters the transverse slot, the pushing force applied to the insulation plate by hand is difficult to maintain consistently, easily causing the limiting plate to tilt and jam against the inner wall of the slot during movement. In this case, the operator must readjust the position and try again, severely impacting installation efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an arc-extinguishing device for circuit breakers to solve the problems mentioned in the background art.

[0006] The technical solution of the present invention is: a circuit breaker arc extinguishing device, comprising a circuit breaker and an insulating partition, wherein the inlet and outlet of the circuit breaker are respectively provided with a transverse slot and a longitudinal through slot communicating with the transverse slot, the insulating partition is provided with a limiting plate, the limiting plate is slidably engaged with the transverse slot, a portion of the insulating partition is slidably engaged with the longitudinal through slot, the inner wall of the transverse slot is provided with a correction component, the inner wall of the longitudinal through slot is provided with a driving component, and the correction component and the driving component are connected by a linkage component;

[0007] When the insulating partition moves within the longitudinal through groove, it triggers the drive assembly to operate. The linkage assembly then drives the correction assembly to operate, applying force to both sides of the limiting plate so that the moving direction of the limiting plate remains parallel to the length extension direction of the transverse slot.

[0008] Furthermore, the drive assembly includes a first slide groove formed within the circuit breaker and communicating with the longitudinal through groove, a force-bearing rod slidably engaged with the first slide groove, a first reset part for resetting the force-bearing rod, and a force-applying part for pushing the force-bearing rod to slide within the first slide groove. The first slide groove is symmetrically distributed on both sides of the longitudinal through groove.

[0009] Furthermore, the force-applying part includes a first arc-shaped protrusion disposed on the portion of the force-bearing rod located in the longitudinal through groove, and protrusions and grooves spaced apart on the insulating partition, wherein the protrusions and the grooves are both arc-shaped and form a wave-like shape;

[0010] After the protrusion contacts the first arc-shaped protrusion, as the insulating partition moves, the protrusion and the first arc-shaped protrusion slide relative to each other and apply a force to the first arc-shaped protrusion, causing the force-bearing rod to slide in the first groove; when the first arc-shaped protrusion enters the groove, the force-bearing rod is reset under the action of the first reset part.

[0011] Furthermore, the correction assembly includes a second sliding groove formed inside the circuit breaker and communicating with the transverse slot, an impact rod that slides in cooperation with the second sliding groove, a second reset part for resetting the impact rod, and second arc-shaped protrusions respectively provided at both ends of the impact rod.

[0012] Furthermore, the linkage component includes a cavity formed within the circuit breaker, a rotating impact part disposed within the cavity, and a reciprocating part cooperating with the rotating impact part. The reciprocating part, under the action of the driving component, drives the rotating impact part to move and impact the correction component, so that the correction component applies force to both sides of the limiting plate.

[0013] Furthermore, the rotating impact section includes a rotating shaft rotatably connected to the inner wall of the cavity, a circular plate disposed on the rotating shaft, connecting rods arrayed on the circular plate, and impact balls disposed at the ends of the connecting rods;

[0014] As the impact ball rotates with the circular plate, it impacts the correction assembly, causing the correction assembly to exert a force on both sides of the limiting plate.

[0015] Furthermore, the reciprocating part includes a transverse rod connected to the drive assembly, a rack disposed on the transverse rod, and a gear disposed on the rotating shaft and meshing with the rack.

[0016] Furthermore, the inner wall of the cavity is provided with a limiting groove, and the transverse rod slides in conjunction with the limiting groove.

[0017] Furthermore, the first reset part includes a first annular groove formed along the inner wall of the first slide groove, a first spring connecting the force-bearing rod and the inner wall of the first annular groove, and a first baffle disposed on the portion of the force-bearing rod located in the first annular groove, the first baffle being located on the side close to the longitudinal through groove.

[0018] Furthermore, the second reset part includes a second annular groove formed along the inner wall of the second slide groove, a second spring connecting the impact rod and the inner wall of the second annular groove, and a second baffle disposed on the portion of the impact rod located in the second annular groove, the second baffle being located on the side away from the transverse slot.

[0019] The beneficial effects of this invention are:

[0020] Compared with existing technologies, this invention features a correction component installed on the inner wall of the transverse slot and a drive component installed on the inner wall of the longitudinal through slot, connected by a linkage component. When the operator inserts the insulating partition into the longitudinal through slot and pushes it inward, the movement of the insulating partition automatically triggers the drive component, which in turn drives the correction component to apply continuous force to both sides of the limiting plate via the linkage component. This process requires no additional operator intervention, achieving simultaneous installation and correction. It effectively avoids the problem of the limiting plate getting stuck on the inner wall of the transverse slot due to uneven hand pushing force, requiring repeated adjustments and re-insertion. This significantly shortens installation time and improves on-site assembly efficiency.

[0021] The force-applying part of this invention adopts a wave-like structure with alternating arc-shaped protrusions and arc-shaped grooves. In conjunction with the first arc-shaped protrusion on the force-bearing rod, as the insulating partition continues to advance, the force-bearing rod slides back and forth in the first slide groove. This reciprocating motion is then transmitted to the correction component via the linkage assembly. The impact rod of the correction component slides back and forth in the second slide groove, applying a balanced force to both sides of the limiting plate through the second arc-shaped protrusion. This ensures that the movement direction of the limiting plate remains parallel to the length extension direction of the transverse slot. This automatic correction mechanism can immediately correct any slight deviation of the limiting plate, preventing the accumulation of deviation that could lead to jamming and ensuring the smoothness of the installation process.

[0022] This invention transforms the linear reciprocating motion of the force-bearing rod into the circular motion of the rotating impact part through the meshing transmission of rack and pinion. Then, the connecting rods and impact balls distributed in an array on the circular plate intermittently impact the correction component. At the same time, the first reset part and the second reset part realize the automatic reset of the force-bearing rod and the impact rod through springs, so that the entire correction process can be carried out cyclically as the insulating partition continues to advance, ensuring the continuity and uninterruptedness of the correction effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the force-applying part structure of the present invention. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0028] Examples, such as Figures 1-3 As shown, a circuit breaker arc extinguishing device includes a circuit breaker 1 and an insulating partition 2. The circuit breaker 1 has an inlet 101 and an outlet 102 respectively provided with a transverse slot 103 and a longitudinal through slot 104 communicating with the transverse slot 103. The insulating partition 2 is provided with a limiting plate 3, which is slidably engaged with the transverse slot 103. A portion of the insulating partition 2 is slidably engaged with the longitudinal through slot 104. The inner wall of the transverse slot 103 is provided with a correction component 4, and the inner wall of the longitudinal through slot 104 is provided with a driving component 5. The correction component 4 and the driving component 5 are connected by a linkage component 6.

[0029] When the insulating partition 2 moves within the longitudinal through groove 104, it triggers the drive assembly 5 to operate, and the linkage assembly 6 drives the correction assembly 4 to operate, so as to apply force to both sides of the limiting plate 3, so that the moving direction of the limiting plate 3 remains parallel to the length extension direction of the transverse slot 103.

[0030] When the operator performs the installation operation, first align the insulating partition 2 with the longitudinal through slot 104 on the circuit breaker 1, and align the limiting plate 3 with the opening end of the transverse slot 103. Then, the operator applies a pushing force to move the insulating partition 2 into the circuit breaker 1 along the longitudinal through slot 104. During this movement, part of the insulating partition 2 will first touch and trigger the drive component 5 set on the inner wall of the longitudinal through groove 104. After being triggered, the drive component 5 starts to move, and the driving force it generates is transmitted to the correction component 4 set on the inner wall of the transverse slot 103 through the linkage component 6. After receiving the driving force, the correction component 4 will apply a balanced or intermittent impact force to the limiting plate 3 from both sides, effectively pushing the limiting plate 3, which has a slight deviation, back to the correct travel trajectory, thereby ensuring that the moving direction of the limiting plate 3 is always parallel to the length extension direction of the transverse slot 103. This invention realizes automatic correction of the insulating partition 2 during installation. Operators do not need to change their operating habits, nor do they need to perform precise visual alignment in dim light and confined space, which greatly reduces the installation difficulty and effectively avoids the problem of the limiting plate 3 getting stuck on the inner wall of the transverse slot 103 due to unstable hand pushing force, requiring repeated adjustment and re-insertion. This significantly shortens the installation time and improves the on-site assembly efficiency.

[0031] In an optional embodiment of the present invention, the drive assembly 5 includes a first slide groove 501 formed in the circuit breaker 1 and communicating with the longitudinal through groove 104, a force-bearing rod 502 slidably engaged with the first slide groove 501, a first reset part 503 for resetting the force-bearing rod 502, and a force-applying part 504 for pushing the force-bearing rod 502 to slide in the first slide groove 501. The first slide groove 501 is symmetrically distributed on both sides of the longitudinal through groove 104. When the insulating partition 2 slides in the longitudinal through groove 104, the force-applying part 504 provided on its surface will make mechanical contact with the force-bearing rod 502. Since the force-applying part 504 has a height change in the moving direction of the insulating partition 2, this contact will force the force-bearing rod 502 to slide laterally in the first slide groove 501 in which it is located. As the insulating partition 2 continues to move, the height change of the force-applying part 504 passes through the force-bearing rod 502, and the first reset part 503 provides a restoring force to reset the force-bearing rod 502. Since the first slide groove 501 is symmetrically arranged on both sides of the longitudinal through groove 104, the force-bearing rods 502 on both sides will slide back and forth synchronously. Through the symmetrically arranged first slide groove 501 and force-bearing rod 502, the driving force can be obtained evenly from both sides of the insulating partition 2, ensuring the balance of the force on the entire linkage mechanism, avoiding the insulation partition 2 itself from tilting due to force on one side, and further improving the stability and reliability of the correction.

[0032] In an optional embodiment of the present invention, the force-applying part 504 includes a first arc-shaped protrusion 5041 disposed on the portion of the force-receiving rod 502 located in the longitudinal through groove 104, and a protrusion 5042 and a groove 5043 disposed at intervals on the insulating partition 2, wherein the protrusion 5042 and the groove 5043 are both arc-shaped and form a wave-like shape.

[0033] After the protrusion 5042 contacts the first arc-shaped protrusion 5041, as the insulating partition 2 moves, the protrusion 5042 and the first arc-shaped protrusion 5041 slide relative to each other and apply force to the first arc-shaped protrusion 5041, causing the force-bearing rod 502 to slide in the first groove 501; when the first arc-shaped protrusion 5041 enters the groove 5043, the force-bearing rod 502 is reset under the action of the first reset part 503.

[0034] When the insulating partition 2 is pushed into the longitudinal through groove 104, the wavy shape of its surface begins to contact the first arc-shaped protrusion 5041 at the end of the force-bearing rod 502. Initially, the first arc-shaped protrusion 5041 is located in a groove 5043. As the insulating partition 2 advances, the arc-shaped inclined surface of the next protrusion 5042 slides relative to the arc-shaped surface of the first arc-shaped protrusion 5041. The linear pushing force of the insulating partition 2 is converted into a lateral pushing force on the first arc-shaped protrusion 5041, thereby pushing the entire force-bearing rod 502 to slide within the first slide groove 501 and compressing the first reset part 503. When the insulating partition 2 continues to move, and the first arc-shaped protrusion 5041 passes the highest point of the protrusion 5042 and enters the next groove 5043, the external lateral pushing force on the force-bearing rod 502 disappears. Under the action of the elastic force of the first reset part 503, it quickly resets and returns to the initial position, ready to enter the next cycle.

[0035] In an optional embodiment of the present invention, the correction assembly 4 includes a second slide groove 401 formed within the circuit breaker 1 and communicating with the transverse slot 103, an impact rod 402 slidably engaged with the second slide groove 401, a second reset part 403 for resetting the impact rod 402, and second arc-shaped protrusions 404 respectively disposed at both ends of the impact rod 402; the impact rod 402 is slidably installed in the second slide groove 401, with one end extending into the internal space of the transverse slot 103. When no external force is applied, the impact rod 402 remains in its initial position under the action of the second reset part 403. When the linkage assembly 6 applies a force to the impact rod 402, the impact rod 402 is reset. The striking rod 402 slides along the second groove 401, causing the second arc-shaped protrusion 404 at one end to extend and impact one side of the limiting plate 3. When the force of the linkage component 6 disappears, the second reset part 403 resets the striking rod 402. Through the coordinated action of the symmetrically arranged correction components 4 on both sides, synchronous force is applied to both sides of the limiting plate 3. The design of the second arc-shaped protrusion 404 avoids rigid hard contact with the limiting plate 3, reducing scratches and damage. By setting the second reset part 403, the striking rod 402 can be reset quickly, ensuring the continuity and high frequency of the correction action, and timely correction of the instantaneous slight deviation of the limiting plate 3.

[0036] In an optional embodiment of the present invention, the linkage component 6 includes a cavity 601 opened in the circuit breaker 1, a rotating impact part 602 disposed in the cavity 601, and a reciprocating part 603 cooperating with the rotating impact part 602. Under the action of the drive component 5, the reciprocating part 603 drives the rotating impact part 602 to move and impact the correction component 4, so that the correction component 4 applies force to both sides of the limiting plate 3. When the force rod 502 in the drive component 5 performs reciprocating linear motion, it will drive the reciprocating part 603 connected to it to perform synchronous reciprocating motion. The reciprocating part 603 converts its own linear reciprocating motion into the rotational motion of the rotating impact part 602 through its transmission structure. During the rotation, the rotating impact part 602 will periodically impact the impact rod 402 in the correction component 4, thereby transmitting power to the correction component 4.

[0037] In an optional embodiment of the present invention, the rotating impact part 602 includes a rotating shaft 6021 rotatably connected to the inner wall of the cavity 601, a circular plate 6022 disposed on the rotating shaft 6021, a connecting rod 6023 arrayed on the circular plate 6022, and an impact ball 6024 disposed at the end of the connecting rod 6023.

[0038] As the impact ball 6024 rotates with the circular plate 6022, it impacts the correction component 4, causing the correction component 4 to exert force on both sides of the limiting plate 3.

[0039] Driven by the reciprocating part 603, the rotating shaft 6021 rotates, causing the circular plate 6022 to rotate synchronously. Multiple impact balls 6024 are fixed to the circular plate 6022 via a connecting rod 6023. These impact balls 6024 are arranged in a circular array around the rotating shaft 6021. As the circular plate 6022 rotates, each impact ball 6024 passes sequentially to its corresponding position on the impact rod 402. Whenever an impact ball 6024 rotates to contact the impact rod 402, it impacts the impact rod 402, causing it to slide towards the limiting plate 3. As the circular plate 6022 continues to rotate, the multiple impact balls 6024 generate continuous, rapid, and periodic impacts on the impact rod 402. The arrayed impact balls 6024 achieve high-frequency, multi-point impacts on the correction component 4, not only increasing the frequency of the correction force but also making the correction force more uniform and continuous through the alternating action of multiple impact balls 6024, greatly improving the correction effect and the smoothness of the installation process.

[0040] In an optional embodiment of the present invention, the reciprocating part 603 includes a transverse rod 6031 connected to the drive assembly 5, a rack 6032 disposed on the transverse rod 6031, and a gear 6033 disposed on the rotating shaft 6021 and meshing with the rack 6032. One end of the transverse rod 6031 is fixedly connected to the force rod 502 in the drive assembly 5. When the force rod 502 performs reciprocating linear motion, it will drive the transverse rod 6031 and the rack 6032 on it to perform reciprocating linear motion synchronously. During the movement, the teeth on the rack 6032 will mesh with the gear 6033 sleeved on the rotating shaft 6021 in sequence, thereby converting the linear motion of the rack 6032 into the rotational motion of the gear 6033 and driving the rotating shaft 6021 to rotate, ensuring that even the smallest movements of the drive assembly 5 can be transmitted as the rotational motion of the rotating impact part 602.

[0041] In an optional embodiment of the present invention, the inner wall of the cavity 601 is provided with a limiting groove 6034, and the transverse rod 6031 slides in cooperation with the limiting groove 6034. During the reciprocating motion, a part of the transverse rod 6031 is always constrained in the limiting groove 6034 opened in the inner wall of the cavity 601. The limiting groove 6034 provides precise linear motion guidance for the transverse rod 6031, restricts it from unnecessary deflection, and ensures that the transverse rod 6031 always maintains the correct meshing position with the gear 6033 during the movement, preventing tooth disengagement caused by the offset of the rack 6032, and improving the stability of the entire transmission chain.

[0042] In an optional embodiment of the present invention, the first reset part 503 includes a first annular groove 5031 formed along the inner wall of the first slide groove 501, a first spring 5032 connecting the force-bearing rod 502 and the inner wall of the first annular groove 5031, and a first baffle 5033 disposed on the portion of the force-bearing rod 502 located in the first annular groove 5031, the first baffle 5033 being located on the side near the longitudinal through groove 104; preferably, in this embodiment, the first spring 5032 is sleeved on the force-bearing rod 502, one end abutting against the side wall of the first annular groove 5031 away from the longitudinal through groove 104, and the other end abutting against the first baffle 5033, when the force-applying part 504 pushes the force-bearing part, the spring 5032 is reset. When rod 502 slides away from longitudinal through groove 104, first baffle 5033 compresses first spring 5032. When the force of force application part 504 disappears, the compressed first spring 5032 releases elastic potential energy, pushes first baffle 5033 and drives force rod 502 to reset towards longitudinal through groove 104. The setting of first baffle 5033 ensures effective transmission of spring force. Setting first baffle 5033 on the side close to longitudinal through groove 104 is to ensure that force rod 502 extends into longitudinal through groove 104 in its natural state so as to maintain contact with force application part 504 on insulating partition 2 and improve response speed.

[0043] In an optional embodiment of the present invention, the second reset part 403 includes a second annular groove 4031 formed along the inner wall of the second slide groove 401, a second spring 4032 connecting the impact rod 402 and the inner wall of the second annular groove 4031, and a second baffle 4033 disposed on the portion of the impact rod 402 located in the second annular groove 4031, the second baffle 4033 being located on the side away from the transverse slot 103; preferably, in this embodiment, the second spring 4032 is sleeved on the impact rod 402, one end abutting against the side wall of the second annular groove 4031 near the transverse slot 103, and the other end abutting against the second baffle 4033. When the impact ball 6024 impacts the impact rod 402 and causes it to slide towards the limiting plate 3, the second baffle 4033 is activated. Plate 4033 compresses the second spring 4032. When the impact force disappears, the compressed second spring 4032 releases its elastic potential energy, pushing the second baffle 4033 and causing the impact rod 402 to reset away from the limiting plate 3. This ensures that the impact rod 402 can quickly and automatically return to its initial position after completing one impact correction, preparing for the next impact. The second baffle 4033 is set on the side away from the transverse slot 103, so that the impact rod 402 is retracted into the second slide groove 401 in its natural state. This avoids the second arc-shaped protrusion 404 at its end from abutting against the limiting plate 3 for a long time, thus avoiding additional resistance to normal sliding. It only extends to apply force when impacted, further ensuring the smooth installation of the limiting plate 3.

[0044] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "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 based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing the technical solution of this patent and simplifying the description, and do not 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 on this patent application.

[0045] 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 patent application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this specification, unless otherwise expressly 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0047] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of 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.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A circuit breaker arc extinguishing device, comprising a circuit breaker (1) and an insulating partition (2), wherein the circuit breaker (1) has an inlet (101) and an outlet (102) respectively provided with a transverse slot (103) and a longitudinal through slot (104) communicating with the transverse slot (103), the insulating partition (2) is provided with a limiting plate (3), the limiting plate (3) is slidably engaged with the transverse slot (103), and a portion of the insulating partition (2) is slidably engaged with the longitudinal through slot (104), characterized in that: The inner wall of the transverse slot (103) is provided with a correction component (4), and the inner wall of the longitudinal through slot (104) is provided with a drive component (5). The correction component (4) and the drive component (5) are connected by a linkage component (6). When the insulating partition (2) moves within the longitudinal through groove (104), it triggers the drive assembly (5) to move, and the linkage assembly (6) drives the correction assembly (4) to move, so as to apply force to both sides of the limiting plate (3) so that the moving direction of the limiting plate (3) remains parallel to the length extension direction of the transverse slot (103).

2. The circuit breaker arc extinguishing device according to claim 1, characterized in that: The drive assembly (5) includes a first slide groove (501) opened in the circuit breaker (1) and communicating with the longitudinal through groove (104), a force-bearing rod (502) that slides with the first slide groove (501), a first reset part (503) for resetting the force-bearing rod (502), and a force-applying part (504) for pushing the force-bearing rod (502) to slide in the first slide groove (501). The first slide groove (501) is symmetrically distributed on both sides of the longitudinal through groove (104).

3. The circuit breaker arc extinguishing device according to claim 2, characterized in that: The force-applying part (504) includes a first arc-shaped protrusion (5041) disposed on the portion of the force-bearing rod (502) located in the longitudinal through groove (104), and a protrusion (5042) and a groove (5043) spaced apart on the insulating partition (2), wherein the protrusion (5042) and the groove (5043) are both arc-shaped and form a wave-like shape; After the protrusion (5042) contacts the first arc-shaped protrusion (5041), as the insulating partition (2) moves, the protrusion (5042) and the first arc-shaped protrusion (5041) slide relative to each other and apply force to the first arc-shaped protrusion (5041), causing the force-bearing rod (502) to slide in the first groove (501); when the first arc-shaped protrusion (5041) enters the groove (5043), the force-bearing rod (502) is reset under the action of the first reset part (503).

4. The circuit breaker arc extinguishing device according to claim 1, characterized in that: The correction assembly (4) includes a second slide groove (401) opened in the circuit breaker (1) and communicating with the transverse slot (103), an impact rod (402) that slides with the second slide groove (401), a second reset part (403) for resetting the impact rod (402), and second arc-shaped protrusions (404) respectively provided at both ends of the impact rod (402).

5. The circuit breaker arc extinguishing device according to claim 1, characterized in that: The linkage component (6) includes a cavity (601) opened in the circuit breaker (1), a rotating impact part (602) disposed in the cavity (601), and a reciprocating part (603) cooperating with the rotating impact part (602). The reciprocating part (603) drives the rotating impact part (602) to move and impact the correction component (4) under the action of the drive component (5), so that the correction component (4) applies force to both sides of the limiting plate (3).

6. The circuit breaker arc extinguishing device according to claim 5, characterized in that: The rotating impact part (602) includes a rotating shaft (6021) rotatably connected to the inner wall of the cavity (601), a circular plate (6022) disposed on the rotating shaft (6021), a connecting rod (6023) arrayed on the circular plate (6022), and an impact ball (6024) disposed at the end of the connecting rod (6023). As the impact ball (6024) rotates with the circular plate (6022), it impacts the correction component (4), causing the correction component (4) to exert force on both sides of the limiting plate (3).

7. The circuit breaker arc extinguishing device according to claim 5, characterized in that: The reciprocating part (603) includes a transverse rod (6031) connected to the drive assembly (5), a rack (6032) disposed on the transverse rod (6031), and a gear (6033) disposed on the rotating shaft (6021) and meshing with the rack (6032).

8. The circuit breaker arc extinguishing device according to claim 7, characterized in that: The inner wall of the cavity (601) is provided with a limiting groove (6034), and the transverse rod (6031) slides in cooperation with the limiting groove (6034).

9. The circuit breaker arc extinguishing device according to claim 2, characterized in that: The first reset part (503) includes a first annular groove (5031) formed along the inner wall of the first slide groove (501), a first spring (5032) connecting the force rod (502) and the inner wall of the first annular groove (5031), and a first baffle (5033) disposed on the portion of the force rod (502) located in the first annular groove (5031), the first baffle (5033) being located on the side close to the longitudinal through groove (104).

10. The circuit breaker arc extinguishing device according to claim 4, characterized in that: The second reset part (403) includes a second annular groove (4031) opened along the inner wall of the second slide groove (401), a second spring (4032) connecting the impact rod (402) and the inner wall of the second annular groove (4031), and a second baffle (4033) disposed on the portion of the impact rod (402) located in the second annular groove (4031), the second baffle (4033) being located on the side away from the transverse slot (103).

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