Circuit breaker linkage interlocking device

Abstract

The utility model provides a circuit breaker linkage interlocking device which comprises a mounting plate, a linkage support arranged on the mounting plate and a linkage plate arranged on the linkage support, and a containing gap used for containing a circuit breaker exists between the linkage plate and the mounting plate. The linkage plate is installed on the linkage support in a sliding mode, a containing hole is formed in the position, corresponding to a switch of the circuit breaker, of the linkage plate, the containing hole is communicated with the containing gap, the containing hole comprises a horizontal section and a vertical section, and the length direction of the horizontal section is the same as the sliding direction of the linkage plate. The circuit breaker linkage interlocking device has the advantages of being simple in structure, low in cost, good in stability, high in reliability and easy to adjust and use, the interlocking function of two groups of circuit breakers can be achieved, and accidents caused by misoperation of personnel can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and in particular relates to a circuit breaker linkage interlocking device. Background Art

[0002] Molded case circuit breakers are commonly used in low-voltage power distribution systems and can be operated manually or automatically to protect circuits from fault conditions such as short circuits, overloads, and ground faults. In manual power conversion systems, traditional molded case circuit breakers are usually switched using AC contactors. The molded case circuit breakers perform isolation, overload, and short-circuit protection at the upper end of the contactor. In low-voltage power distribution systems, many important power supply occasions use two power supplies, one for the main power supply and one for the backup power supply. Only one of the power supplies can be used when the distribution system is running. In actual field applications, the two groups of circuit breakers cannot be switched on and off at the same time. Therefore, it is necessary to design an interlocking interlocking device to intuitively operate the opening and closing of the circuit breaker. However, the existing interlocking interlocking devices generally use flexible steel wire brakes, which have poor interlocking effects, poor reliability and service life, and pose certain safety hazards. Utility Model Content

[0003] In view of this, the present invention aims to provide a circuit breaker linkage interlocking device to solve the problems of poor reliability and service life of existing linkage interlocking devices and potential safety hazards.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0005] A circuit breaker linkage interlocking device comprises a mounting plate, a linkage bracket arranged on the mounting plate, and a linkage plate arranged on the linkage bracket, wherein an accommodating gap for accommodating a circuit breaker exists between the linkage plate and the mounting plate; the linkage plate is slidably mounted on the linkage bracket, and an accommodating hole is provided on the linkage plate corresponding to a switch position of the circuit breaker, the accommodating hole being in communication with the accommodating gap, the accommodating hole comprising a horizontal section and a vertical section, the length direction of the horizontal section being the same as the sliding direction of the linkage plate.

[0006] Furthermore, the linkage plate is mounted on the linkage bracket via connecting bolts, at least two connecting bolts are arranged at intervals, and the linkage plate is provided with strip holes that cooperate with the connecting bolts.

[0007] Furthermore, an anti-loosening gasket is provided on the connecting bolt.

[0008] Furthermore, the linkage bracket is provided with a threaded sleeve that cooperates with the connecting bolt.

[0009] Furthermore, the left and right ends of the linkage plate are respectively provided with bending portions.

[0010] Furthermore, two linkage brackets are arranged at intervals, and a limiting gap for limiting the circuit breaker exists between the two linkage brackets, and the limiting gap is communicated with the accommodating gap.

[0011] Furthermore, the linkage bracket is a U-shaped structural member, the open end of the linkage bracket is arranged toward the mounting plate, and the other end is arranged toward the linkage plate.

[0012] Furthermore, a guide rail for mounting the circuit breaker is provided at a position on the mounting plate corresponding to the accommodation gap.

[0013] Furthermore, the accommodating hole is an inverted T-shaped hole.

[0014] Compared with the prior art, the circuit breaker linkage interlocking device described in the present invention has the following advantages:

[0015] The circuit breaker interlocking device described in this utility model has the advantages of simple structure, low cost, good stability, high reliability, and ease of adjustment and use. It can realize the interlocking function of two sets of circuit breakers, which helps to avoid accidents caused by human error. At the same time, by providing a linkage bracket and a linkage plate on the mounting plate, the linkage bracket and the linkage plate cooperate to achieve a clamping limit for the circuit breaker, preventing the circuit breaker from falling off the guide rail under vibration conditions, which helps to further improve the safety of the circuit breaker during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 The figure is a schematic structural diagram of a circuit breaker linkage interlocking device according to an embodiment of the present utility model.

[0018] Description of reference numerals:

[0019] 1. Mounting plate; 2. Linkage bracket; 3. Linkage plate; 4. Circuit breaker; 5. Guide rail; 6. Strip hole; 7. Receiving hole; 8. Connecting bolt; 9. Anti-loosening gasket; 10. Bending part. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, 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 this utility model based on specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0024] A circuit breaker interlocking device, such as Figure 1 As shown, it includes a mounting plate 1, a linkage bracket 2 provided on the mounting plate 1, and a linkage plate 3 provided on the linkage bracket 2. There is an accommodating gap between the linkage plate 3 and the mounting plate 1 for accommodating the circuit breaker 4; the linkage plate 3 is slidably installed on the linkage bracket 2, and an accommodating hole 7 is provided on the linkage plate 3 corresponding to the switch position of the circuit breaker 4. The accommodating hole 7 is connected to the accommodating gap, and the accommodating hole 7 includes a horizontal section and a vertical section. The length direction of the horizontal section is the same as the sliding direction of the linkage plate 3.

[0025] For example, the width of the vertical section of the accommodating hole 7 is designed to only meet the rotation of one switch. By sliding the linkage plate 3 on the linkage bracket 2, the operator can adjust the position of the vertical section of the accommodating hole 7 by sliding the linkage plate 3, so that the vertical section of the accommodating hole 7 can be in the switch position of the two circuit breakers 4 respectively. When the vertical section of the accommodating hole 7 is in the switch position of one circuit breaker 4, the switch of the other circuit breaker 4 will be blocked by the linkage plate 3 and cannot be turned on, thereby realizing the linkage interlocking of the two circuit breakers 4, ensuring that the two circuit breakers 4 cannot be switched on and off at the same time.

[0026] In actual use, the receiving hole 7 is an inverted T-shaped hole. The inverted T-shaped receiving hole 7 is beneficial for improving the structural strength of the linkage plate 3 and reducing the moving length of the linkage plate 3. The operator only needs to move the linkage plate 3 a short distance to align the vertical sections of the receiving hole 7 on the linkage plate 3 with the switches of the two circuit breakers 4, making operation easier.

[0027] Preferably, the linkage plate 3 is mounted on the linkage bracket 2 via a connecting bolt 8, wherein at least two connecting bolts 8 are arranged at intervals, and the linkage plate 3 is provided with a strip hole 6 that cooperates with the connecting bolt 8. Exemplarily, two or more connecting bolts 8 can be arranged at intervals, and the strip holes 6 are arranged in a one-to-one correspondence with the connecting bolts 8. Among them, an anti-loosening gasket 9 is provided on the connecting bolt 8. The provision of the anti-loosening gasket 9 is conducive to improving the stability of the connecting bolt 8 after tightening, ensuring that the connecting bolt 8 can continuously and stably limit the linkage plate 3 and prevent the linkage plate 3 from sliding accidentally. At the same time, by arranging at least two connecting bolts 8 at intervals, when the operator needs to slide the linkage plate 3, the connecting bolt 8 can be loosened, and the connecting bolt 8 can be used to cooperate with the strip hole 6 to guide the linkage plate 3, thereby ensuring the stability of the linkage plate 3 during sliding adjustment.

[0028] In actual use, the linkage bracket 2 is provided with a threaded sleeve (not shown) that cooperates with the connecting bolt 8. The threaded sleeves are provided in a one-to-one correspondence with the connecting bolt 8, and the threaded sleeves are fixed to the linkage bracket 2. By providing the threaded sleeves to cooperate with the connecting bolt 8, it is beneficial to increase the connection length of the connecting bolt 8 and the linkage bracket 2, ensure the stability of the connecting bolt 8 on the linkage bracket 2, and ensure the limiting and fixing effect of the connecting bolt 8 on the linkage plate 3.

[0029] Preferably, the left and right ends of the linkage plate 3 are respectively provided with bent portions 10. By providing the bent portions 10 on the left and right ends of the linkage plate 3, it is convenient for the operator to hold or clamp it. After loosening the connecting bolts 8, the operator can use the bent portions 10 to easily move the linkage plate 3, thereby reducing the difficulty of moving and adjusting the linkage plate 3.

[0030] Preferably, two linkage brackets 2 are provided at intervals, with a limiting gap between the two linkage brackets 2 for limiting the circuit breaker 4, and the limiting gap is connected to the accommodating gap. By providing two linkage brackets 2 at intervals, the two linkage brackets 2 can effectively limit the two circuit breakers 4, ensuring that the two circuit breakers 4 can be stably installed on the mounting plate 1, and the switches on the two circuit breakers 4 can always be set corresponding to the accommodating holes 7, which is convenient for operators.

[0031] Preferably, the linkage bracket 2 is a U-shaped structure, and the opening end of the linkage bracket 2 is arranged towards the mounting plate 1, and the other end is arranged towards the linkage plate 3. Exemplarily, the linkage bracket 2 can be fixed on the mounting plate 1 on the left and right sides of the circuit breaker 4 through self-locking screws, so as to limit the left and right movement of the circuit breaker 4.

[0032] Preferably, the mounting plate 1 is provided with a guide rail 5 for mounting the circuit breaker 4 at a position corresponding to the accommodating gap. Exemplarily, the guide rail 5 can be fixed on the mounting plate 1 through self-locking screws, so as to facilitate the installation of the circuit breaker 4.

[0033] In actual application, the operator can first install two circuit breakers 4 on the guide rail 5, and then install the linkage bracket 2 and the linkage plate 3 in sequence, so that the assembled linkage bracket 2 and the linkage plate 3 can press and limit the circuit breaker 4, which is beneficial to improve the stability of the circuit breaker 4 under vibration working conditions.

[0034] The circuit breaker linkage interlocking device has the advantages of simple structure, low cost, good stability, high reliability, easy adjustment and use, can realize the interlocking function of two groups of circuit breakers, and is beneficial to avoid accidents caused by personnel misoperation. At the same time, by arranging the linkage bracket and the linkage plate on the mounting plate, the linkage bracket and the linkage plate are used in cooperation, the pressing and limiting of the circuit breaker can also be realized, the problem of the circuit breaker falling off the guide rail under vibration working conditions is prevented, and the safety of the circuit breaker in the use process is further improved.

[0035] The above is only a preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A circuit breaker interlocking device, characterized in that: The invention comprises a mounting plate (1), a linkage bracket (2) arranged on the mounting plate (1), and a linkage plate (3) arranged on the linkage bracket (2); an accommodating gap for accommodating a circuit breaker (4) exists between the linkage plate (3) and the mounting plate (1); the linkage plate (3) is slidably mounted on the linkage bracket (2); an accommodating hole (7) is provided on the linkage plate (3) at a switch position corresponding to the circuit breaker (4); the accommodating hole (7) is communicated with the accommodating gap; the accommodating hole (7) comprises a horizontal section and a vertical section; the length direction of the horizontal section is the same as the sliding direction of the linkage plate (3).

2. A circuit breaker linkage interlocking device according to claim 1, characterized in that: The linkage plate (3) is mounted on the linkage bracket (2) via connecting bolts (8), at least two connecting bolts (8) are arranged at intervals, and the linkage plate (3) is provided with strip holes (6) that match the connecting bolts (8).

3. A circuit breaker linkage interlocking device according to claim 2, characterized in that: An anti-loosening washer (9) is provided on the connecting bolt (8).

4. A circuit breaker linkage interlocking device according to claim 2 or 3, characterized in that: The linkage bracket (2) is provided with a threaded sleeve that cooperates with the connecting bolt (8).

5. The circuit breaker linkage interlocking device according to claim 1, characterized in that: The left and right ends of the linkage plate (3) are correspondingly provided with bending portions (10).

6. The circuit breaker linkage interlocking device according to claim 1, characterized in that: Two linkage brackets (2) are arranged at intervals, and a limiting gap for limiting the circuit breaker (4) exists between the two linkage brackets (2), and the limiting gap is communicated with the accommodating gap.

7. A circuit breaker linkage interlocking device according to claim 1 or 6, characterized in that: The linkage bracket (2) is a U-shaped structural member, with an open end of the linkage bracket (2) disposed toward the mounting plate (1) and the other end disposed toward the linkage plate (3).

8. A circuit breaker linkage interlocking device according to claim 7, characterized in that: A guide rail (5) for installing a circuit breaker (4) is provided at a position on the installation plate (1) corresponding to the accommodation gap.

9. The circuit breaker linkage interlocking device according to claim 1, characterized in that: The accommodating hole (7) is an inverted T-shaped hole.

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