A circuit breaker protection mechanism

Abstract

The utility model provides a kind of circuit breaker protection mechanism, the purpose is to solve the technical problem that current circuit breaker is extremely easy to produce arc phenomenon when switching operation. The protection mechanism includes: cover plate, it is rectangular structure, cover plate middle part has operating port;Operating member, sliding is set on operating port, operating member has a connecting portion, connecting portion can be connected with the operating lever of circuit breaker;Four extension plates, respectively sliding is set on the periphery of cover plate;Connecting plate, vertically set on the edge of extension plate;Wherein, at least one connecting plate is provided on each extension plate. The protection mechanism is set up by the extension plate that can slide on the periphery of cover plate, adapt to different models circuit breaker, when installation, connecting plate is clamped in the periphery of circuit breaker, the operating lever of circuit breaker passes through from operating port on cover plate, and is connected with operating member power, by operating member, the switching of circuit breaker can be directly operated. By the technical scheme, the safety when operating circuit breaker is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of ensuring the safety of circuit breakers, and specifically to a circuit breaker protection mechanism. Background Technology

[0002] Circuit breakers, as crucial safety protection devices in power systems, are highly susceptible to arcing during opening and closing operations. At the moment the contacts separate, current continues to flow through the air, creating an arc plasma with temperatures reaching 3000-8000℃ between the contact points. This intense discharge can produce an arc several centimeters long in a low-voltage 380V system, while in a 10kV medium-voltage system, the arc length can reach tens of centimeters, lasting for hundreds of milliseconds.

[0003] The hazards of electric arc are mainly manifested in three aspects: First, the instantaneous high temperature can cause second-degree or higher burns to the operator's hands; second, metal vapor splashes may penetrate ordinary work clothes and cause deep burns; third, ultraviolet rays in strong light radiation can cause photokeratitis, while infrared rays may cause lens opacity. Utility Model Content

[0004] To address the technical problem that current circuit breakers are prone to arcing during opening and closing operations, this utility model provides a circuit breaker protection mechanism. By setting a cover plate, it prevents discharge from occurring at the circuit breaker's terminal block position, thereby enabling the protection mechanism to prevent the generation of arcs.

[0005] The technical solution of this utility model is:

[0006] A circuit breaker protection mechanism, comprising:

[0007] The cover plate is rectangular in structure and has an operating opening in the middle.

[0008] An operating component is slidably disposed on the operating port, and the operating component has a connecting part that can be movably connected to the lever of the circuit breaker.

[0009] Four extension plates are slidably disposed around the perimeter of the cover plate;

[0010] A connecting plate is perpendicularly disposed at the edge of the extension plate;

[0011] Each of the extension boards shall have at least one connecting board.

[0012] Optionally, it also includes:

[0013] Four corner plates are slidably disposed at the four corners of the cover plate.

[0014] Optionally, both the extension plate and the corner plate are provided with limiting members between themselves and the cover plate.

[0015] Optionally, a sliding groove is provided at each of the four corners of the cover plate, and the corner plate is slidably disposed in the sliding groove.

[0016] Optionally, the corner plate is square, and the movement trajectory of the corner plate forms a 45° angle with the side of the cover plate.

[0017] Optionally, a limiting groove is provided on one side of the corner plate, and a limiting block matching the limiting groove is provided in the sliding groove of the cover plate;

[0018] The other side of the corner plate is provided with a guide groove, and the cover plate is provided with a guide block extending above the slide groove.

[0019] Optionally, the cover plate has an insert groove extending inward around its perimeter, and the extension plate is movably disposed within the insert groove.

[0020] Optionally, it also includes:

[0021] Two sets of support frames are mounted on the cover plate and located on both sides of the operating port, respectively;

[0022] The operating component is slidably mounted on the two sets of support frames.

[0023] Optionally, the operating element includes:

[0024] Two sliding rods, the two ends of which are slidably connected to the two support frames respectively, the two sliding rods are arranged parallel to each other, and there is a gap between the two sliding rods;

[0025] Two V-shaped brackets, with each end of the V-shaped bracket located at the end of one of the two sliding rods;

[0026] The drive rod has its two ends located at the corners of the two V-shaped frames.

[0027] Optionally, the middle part of the slide bar is cylindrical.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] First, a cover plate is installed. By setting sliding extension plates around the cover plate, the protective mechanism can be adapted to different types of circuit breakers. During installation, the connecting plates on the extension plates are locked around the circuit breaker. The circuit breaker lever passes through the operating port on the cover plate and is poweredly connected to the operating component. The circuit breaker can be directly operated to open or close through the operating component.

[0030] This technical solution enables the generation of electric arcs on different types of circuit breakers, thereby improving the safety of operating the circuit breakers. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the sliding groove on the cover plate;

[0034] Figure 3 This is a three-dimensional structural diagram of the bottom of this utility model;

[0035] Figure 4 This is a schematic diagram of the three-dimensional structure of the corner plate;

[0036] Figure 5 This is a three-dimensional structural diagram of a circuit breaker. Detailed Implementation

[0037] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0038] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0039] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0040] Example:

[0041] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5This embodiment discloses a protection mechanism for a circuit breaker 50, including a cover plate 10, an operating component 20, an extension plate 30, and a connecting plate 40. The cover plate 10 has a rectangular structure and an operating opening 11 in its center. When the cover plate 10 covers the circuit breaker 50, the operating opening 11 matches the movable area of ​​the lever 51 of the circuit breaker 50, allowing the lever 51 to move within the operating opening 11.

[0042] An operating component 20 is slidably disposed on the cover plate 10. The operating component 20 is located on the operating port 11 and has a connecting part that can be movably connected to the lever 51 of the circuit breaker 50. Thus, the operating lever can be used to drive the lever 51 of the circuit breaker 50, thereby controlling the opening and closing of the circuit breaker 50.

[0043] An extension plate 30 is provided on each of the four sides of the cover plate 10. The extension plate 30 has a rectangular structure, and the length of the extension plate 30 at different positions is adapted to the size of the corresponding side of the cover plate 10. The extension plate 30 is slidably mounted on the cover plate 10. Through this sliding design, the cover plate 10 can be extended outward by a certain width.

[0044] Several connecting plates 40 are respectively provided on the four extension plates 30, wherein the surface of the connecting plate 40 is perpendicular to the surface of the extension plate 30.

[0045] When in use, first adjust the extension plate 30 to a suitable position, and then cover the circuit breaker 50 with the cover plate 10. At this time, the operation port 11 corresponds to the lever 51 of the circuit breaker 50, and all the connecting plates 40 are in close contact with the four sides of the circuit breaker 50. Through the above operation, the cover plate 10 is installed on the front of the circuit breaker.

[0046] By matching the connecting part on the operating element 20 with the lever 51, the lever 51 can be driven by the operating element 20, and the circuit breaker 50 can be directly operated by the operating element 20.

[0047] In this embodiment, extension plates 30 are provided around the cover plate 10 to accommodate different types of circuit breakers 50. This technical solution enables the generation of electric arcs on different types of circuit breakers 50, thereby improving the safety of operating the circuit breakers 50.

[0048] Understandably, the main function of this protective mechanism is to prevent the circuit breaker 50 from generating an electric arc. Therefore, the material of this protective mechanism should be an insulating material, such as a plastic component.

[0049] In one specific embodiment:

[0050] All the extension plates 30 have different lengths, but all the extension plates 30 have the same width. The protective structure also includes four corner plates 60, which are square in shape and are slidably mounted on the cover plate 10, with one corner plate 60 corresponding to each of the four corners of the cover plate 10.

[0051] Since the corners of the cover plate 10 cannot be covered when all the extension plates 30 are extended outward, there is still a possibility of discharge during use. In this embodiment, corner plates 60 are provided to cover the corners that cannot be covered after the extension plates 30 are extended.

[0052] In another specific embodiment:

[0053] A limiting member 70 is provided between all extension plates 30 and all corner plates 60 and the cover plate 10. The position of the extension plates 30 and corner plates 60 on the cover plate 10 can be directly fixed by the limiting member 70.

[0054] In another specific embodiment:

[0055] Each of the four corners of the cover plate 10 is provided with a sliding groove 14, and the corner plate 60 is slidably disposed in the sliding groove 14. The movement trajectory of the corner plate 60 has an angle of 45° with the side of the cover plate 10.

[0056] By setting the slide groove 14, the thickness of the entire protective mechanism can be reduced.

[0057] By setting the movement path of the corner plate 60 at a 45° angle with the side of the cover plate 10, the corner plate 60 can be adapted to the extension plate 30 with different extension amounts.

[0058] In another specific embodiment:

[0059] One side of the corner plate 60 is provided with a limiting groove 61, and the sliding groove 14 of the cover plate 10 is provided with a limiting block 12 that matches the limiting groove 61. The other side of the corner plate 60 is provided with a guide groove 62, and the cover plate 10 is provided with a guide block 13 extending above the sliding groove 14. The guide block 13 is slidably disposed with the guide groove 62.

[0060] This design allows for direct restriction of the movement trajectory of the corner plate 60. It primarily restricts the direction of movement of the corner plate 60 through the guide groove 62 and guide block 13, and restricts the distance of movement of the corner plate 60 through the limiting groove 61 and limiting block 12.

[0061] In another specific embodiment:

[0062] The cover plate 10 has recessed grooves 15 extending inward on its four sides, and the extension plate 30 is movably disposed within the recessed grooves 15. This design restricts the movement trajectory of the extension plate 30.

[0063] In another specific embodiment:

[0064] The aforementioned limiting element 70 includes a stud.

[0065] A stud for limiting the extension plate 30 is provided on the cover plate 10, and one end of the stud is inserted into the insertion groove 15. At the same time, the stud is close to the edge of the insertion groove 15. By rotating the stud, the end of the stud is pressed against the extension plate 30, thereby preventing the extension plate 30 from moving.

[0066] A stud for limiting the angle plate 60 is provided on the angle plate 60 and is located near one corner of the angle plate 60, which is always located on the cover plate 10. When limiting the position of the angle plate 60, the stud is rotated so that the end of the stud abuts against the cover plate 10, thereby cooperating with the guide block 13 to clamp the angle plate 60 and fix the position of the angle plate 60.

[0067] In another specific embodiment:

[0068] The protective mechanism also includes two sets of support frames 80, which are arranged parallel to each other on the cover plate 10 and located on both sides of the operating port 11. The operating component 20 is slidably mounted on the two sets of support frames 80.

[0069] The operating component 20 includes two slide rods 21, two V-shaped brackets 22, and a drive rod 23. The two ends of each slide rod 21 are slidably connected to two support brackets 80, the two slide rods 21 are arranged parallel to each other, and there is a gap between the two slide rods 21.

[0070] The two ends of the V-shaped frame 22 are respectively located at the ends of the two sliding rods 21. The two ends of the drive rod 23 are respectively located at the corners of the two V-shaped frames 22.

[0071] The two sliding rods 21 mentioned above are the connecting parts of the operating component 20. In use, the lever 51 of the circuit breaker 50 passes between the two sliding rods 21, and drives the two V-shaped brackets 22 through the wave drive rod 23, thereby driving the lever 51.

[0072] Preferably, the middle part of the slide bar 21 is cylindrical, and the arc surface structure of the cylindrical surface reduces damage to the lever 51.

[0073] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A circuit breaker protection mechanism, characterized in that, include: A cover plate, which is rectangular in structure, has an operating opening in the middle of the cover plate; An operating component is slidably disposed on the operating port, and the operating component has a connecting part that can be movably connected to the lever of the circuit breaker. Four extension plates are slidably disposed around the perimeter of the cover plate; A connecting plate is perpendicularly disposed at the edge of the extension plate; Each of the extension boards shall have at least one connecting board.

2. The circuit breaker protection mechanism according to claim 1, characterized in that, Also includes: Four corner plates are slidably positioned at the four corners of the cover plate.

3. The circuit breaker protection mechanism according to claim 2, characterized in that, Both the extension plate and the corner plate are provided with limiting components between themselves and the cover plate.

4. The circuit breaker protection mechanism according to claim 2, characterized in that, The cover plate is provided with a sliding groove at each of its four corners, and the corner plate is slidably disposed in the sliding groove.

5. The circuit breaker protection mechanism according to claim 4, characterized in that, The corner plate is square, and the movement trajectory of the corner plate forms a 45° angle with the side of the cover plate.

6. The circuit breaker protection mechanism according to claim 5, characterized in that: A limiting groove is provided on one side of the corner plate, and a limiting block matching the limiting groove is provided in the sliding groove of the cover plate; The other side of the corner plate is provided with a guide groove, and the cover plate is provided with a guide block extending above the slide groove.

7. The circuit breaker protection mechanism according to claim 1, characterized in that, The cover plate has an embedding groove extending inward around its perimeter, and the extension plate is movably disposed within the embedding groove.

8. The circuit breaker protection mechanism according to claim 1, characterized in that, Also includes: Two sets of support frames are mounted on the cover plate and located on both sides of the operating port, respectively; The operating component is slidably mounted on the two sets of support frames.

9. The circuit breaker protection mechanism according to claim 8, characterized in that, The operating element includes: Two sliding rods, the two ends of which are slidably connected to the two support frames respectively, the two sliding rods are arranged parallel to each other, and there is a gap between the two sliding rods; Two V-shaped brackets, with each end of the V-shaped bracket located at the end of one of the two sliding rods; The drive rod has its two ends located at the corners of the two V-shaped frames.

10. The circuit breaker protection mechanism according to claim 9, characterized in that, The middle part of the slide bar is cylindrical.

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