A left-right interchangeable modular circuit breaker

Abstract

The utility model discloses a left and right interchanged modularized circuit breaker, specifically relates to the technical field of modularized circuit breaker, including the casing, the inner chamber top of casing is fixedly connected with four separate top boards, and the inner chamber bottom both sides symmetry of casing are fixedly connected with the separate bottom board, and the middle part of casing is provided with the closing module and the opening module. The utility model first through setting four separate top boards and the setting of separate bottom board, can form two completely same module installation space, provides the uniform installation reference for closing module and opening module, ensures that two modules can be installed in left side or right side installation space at random, realizes the possibility of " position interchanging " from structure, secondly, the installation position of the support plate of closing module and opening module is basically same, and the fixed mounting after convenient replacement position can realize the left and right interchanging of closing module and opening module, need not to customize special structure, adapts the demand of different customers to button position.

Description

Technical Field

[0001] This utility model relates to the field of modular circuit breaker technology, and more specifically, to a modular circuit breaker with interchangeable left and right sides. Background Technology

[0002] As the core control equipment of medium-voltage power distribution networks, 12kV circuit breakers undertake key functions such as circuit switching and fault protection. The rationality of their operating mechanism directly affects the operational reliability and maintenance convenience of the power distribution system. With the diversification of power distribution engineering scenarios (such as distribution rooms, prefabricated substations, outdoor switch stations, etc.), different customers have put forward different requirements for the position of the circuit breaker closing button and opening button. In some scenarios, the closing button needs to be located on the left to match the operating habits, while in other scenarios, the opening button needs to be on the left to adapt to the cabinet layout. Traditional circuit breakers use a one-to-one fixed installation design for the closing and opening modules. The modules are rigidly locked to the housing by welding or bolting with special brackets. When the closing module is fixed on the left, the opening module must be on the right. It is impossible to adjust the positions of the two according to customer needs. In addition, the closing crank arm, opening crank arm and drive shaft of traditional circuit breakers use a one-to-one keyway fit, which cannot be adjusted. When the layout of the distribution cabinet requires the opening button to be on the left, the entire circuit breaker structure must be customized, which seriously affects the project progress and cost control. Therefore, a modular circuit breaker with left and right interchangeability is proposed. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a modular circuit breaker with interchangeable left and right sides to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a modular circuit breaker with interchangeable left and right sides, including a housing, four partition top plates fixedly connected to the top of the inner cavity of the housing, partition bottom plates symmetrically fixedly connected to both sides of the bottom of the inner cavity of the housing, a closing module and a opening module arranged in the middle of the housing, a drive shaft arranged on one side of the closing module and the opening module, a closing crank arm, an opening crank arm and a limit tube sleeved in the middle of the drive shaft, and limit end rings symmetrically sleeved at both ends of the drive shaft; Both the closing module and the opening module include two support plates. The closing module includes an energy storage mechanism, which includes an energy storage shaft that passes through the support plate. One end of the energy storage shaft is fitted with an energy storage crank arm, and one end of the energy storage crank arm is connected to an energy storage spring.

[0005] Preferably, the bottom ends of the partition plate are provided with mounting holes, and the top of the support plate is provided with combination holes corresponding to the mounting holes.

[0006] Preferably, a stabilizing shaft is fixedly connected between the two partition top plates in the middle, and the top ends of the two support plates of the closing module are located between the two partition top plates on one side. The distance between the two support plates of the closing module is the same as the distance between the two support plates of the opening module.

[0007] Preferably, the tops of the two support plates of the circuit breaker module are located between the two partition top plates on the other side.

[0008] Preferably, the support plate has an arc-shaped groove corresponding to the drive shaft on the side near the drive shaft, and the drive shaft is located in the middle of the arc-shaped groove.

[0009] Preferably, both ends of the drive shaft pass through the middle of the partition base plate, and the limiting end ring is located on the opposite side of the two partition base plates.

[0010] Preferably, the closing crank arm corresponds to the closing module, and the opening crank arm corresponds to the opening module.

[0011] Preferably, there are multiple limit tubes, which are respectively disposed between the limit end ring, the closing crank arm and the opening crank arm, and the drive shaft is splinedly connected to the closing crank arm and the opening crank arm.

[0012] The technical effects and advantages of this utility model are as follows: 1. This utility model firstly creates two identical module installation spaces by setting four partition top plates and partition bottom plates, providing a unified installation benchmark for the closing module and the opening module. The mounting hole positions of the partition top plates and bottom plates are completely consistent, ensuring that the two modules can be installed arbitrarily in the left or right installation space, realizing the possibility of "position interchange" from a structural perspective. Secondly, the installation positions of the support plates of the closing module and the opening module are basically the same, which facilitates fixed installation after changing the position. It can realize the left and right interchange of the closing module and the opening module without the need for customized special structures, adapting to the button position requirements of different customers. 2. This utility model also sets up a closing crank arm and a opening crank arm that are splinedly connected to the drive shaft. Through the set limit tube, the installation position of the closing crank arm and the opening crank arm can be arbitrarily adjusted as needed to realize the layout conversion of "left closing and right opening" or "left opening and right closing". This facilitates the use of the closing module and the opening module after the position is changed, ensures that the crank arm and the transmission interface of the module are accurately aligned, and is easy to adjust and use. In addition, through the setting of the energy storage shaft and the energy storage spring and the energy storage crank arm, the position of the extended end of the energy storage shaft can be adjusted by sliding the energy storage shaft as needed to adjust the installation position of the energy storage spring and the energy storage crank arm, which is convenient to use. In summary, through the interaction of the above-mentioned functions, the installation positions of the closing and opening crank arms can be adjusted arbitrarily as needed, and the left and right sides of the closing and opening modules can be interchanged. This ensures precise alignment of the crank arms and the transmission interfaces of the modules, eliminating the need for customized special structures and adapting to the button position requirements of different customers. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the disassembled structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the combined structure of the closing module and the opening module after their positions have been changed.

[0016] Figure 4 This is a schematic diagram showing the disassembled structure of the drive shaft, closing crank arm, and opening crank arm of this utility model.

[0017] The attached diagram is labeled as follows: 1. Housing; 2. Separator top plate; 3. Closing module; 4. Opening module; 5. Separator bottom plate; 6. Drive shaft; 7. Energy storage shaft; 8. Energy storage spring; 9. Energy storage crank arm; 10. Support plate; 11. Limiting end ring; 12. Closing crank arm; 13. Opening crank arm; 14. Limiting tube. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] As attached Figure 1-4The diagram illustrates a modular circuit breaker with interchangeable left and right sides, comprising a housing 1. Four partition top plates 2 are fixedly connected to the top of the inner cavity of the housing 1, forming two identical module installation spaces. This provides a unified installation reference for the closing module 3 and the opening module 4, ensuring that the two modules can be installed arbitrarily in either the left or right side installation space, structurally enabling "position interchangeability." Partition bottom plates 5 are symmetrically fixedly connected to both sides of the bottom of the inner cavity of the housing 1. These bottom plates 5 limit the bottom end of the closing module 3 and the opening module 4 on one side, achieving stable installation and fixation. The closing module 3 and the opening module 4 are located in the middle of the housing 1. Block 4, a drive shaft 6 is provided on one side of the closing module 3 and the opening module 4. The middle of the drive shaft 6 is fitted with a closing crank arm 12, an opening crank arm 13 and a limit tube 14. Limiting end rings 11 are symmetrically fitted at both ends of the drive shaft 6. The limiting end rings 11 limit the two ends of the drive shaft 6. The limit tubes 14 can separate and limit the positions of the installed closing crank arm 12 and opening crank arm 13. By adjusting the position of the limit tubes 14 and the closing crank arm 12 and opening crank arm 13, it is convenient to interchange the positions of the closing crank arm 12 and opening crank arm 13, so as to facilitate one-to-one connection and combination with the closing module 3 and the opening module 4 with interchanged positions. Both the closing module 3 and the opening module 4 include two support plates 10. The closing module 3 includes an energy storage mechanism, which includes an energy storage shaft 7 that passes through the support plate 10. One end of the energy storage shaft 7 is fitted with an energy storage crank arm 9, and one end of the energy storage crank arm 9 is connected to an energy storage spring 8. By sliding the energy storage shaft 7, the position of the extended end of the energy storage shaft 7 can be adjusted, and the energy storage crank arm 9 and the support plate 10 can be arbitrarily switched to be installed on the left and right sides of the closing module 3.

[0020] As attached Figure 2 As shown, mounting holes are provided at both ends of the bottom of the partition top plate 2, and combination holes corresponding to the mounting holes are provided on the top of the support plate 10. A stabilizing shaft is fixedly connected between the two partition top plates 2 in the middle. The top ends of the two support plates 10 of the closing module 3 are located between the two partition top plates 2 on one side, and the top ends of the two support plates 10 of the opening module 4 are located between the two partition top plates 2 on the other side. The distance between the two support plates 10 of the closing module 3 is the same as the distance between the two support plates 10 of the opening module 4. Through the cooperation of the mounting holes and combination holes, the closing module 3 and the opening module 4 can be easily fixed to the housing 1 through the partition top plate 2, and the closing module 3 and the opening module 4 can be easily fixed in the middle of the housing 1. When the closing module 3 and the opening module 4 are changed, they can still be installed and fixed. The stabilizing shaft enhances the connection stability of the two partition top plates 2 in the middle, thereby enhancing the overall stability of the installation of the two modules.

[0021] As attached Figure 2 , 4As shown, the support plate 10 has an arc-shaped groove corresponding to the drive shaft 6 on the side near the drive shaft 6. The drive shaft 6 is located in the middle of the arc-shaped groove, and both ends of the drive shaft 6 pass through the middle of the partition base plate 5. The limit end ring 11 is located on the opposite side of the two partition base plates 5. The closing crank arm 12 corresponds to the closing module 3, and the opening crank arm 13 corresponds to the opening module 4. There are multiple limit tubes 14, which are respectively arranged between the limit end ring 11, the closing crank arm 12, and the opening crank arm 13. The drive shaft 6 is splined connected to the closing crank arm 12 and the opening crank arm 13, and passes through the side of the opening module 4. The arc-shaped groove can position the drive shaft 6. The partition base plate 5 supports and limits both ends of the drive shaft 6, improving the installation stability of the drive shaft 6. The limit end ring 11 can also position the drive shaft 6 to prevent axial movement. The multiple limit tubes 14 can adjust the position of the closing crank arm 12 and the opening crank arm 13 according to the installation position of the closing module 3 and the opening module 4, which is convenient for adjustment and use. When the closing module 3 and the opening module 4 are interchanged, the closing crank arm 12 and the opening crank arm 13 can also be interchanged, which is convenient for combination connection and use.

[0022] It is worth noting that the detailed internal transmission structure of the closing module 3 and the opening module 4, as well as the specific shape, size and structure of the closing crank arm 12 and the opening crank arm 13, the energy storage shaft 7, the energy storage spring 8 and the energy storage crank arm 9 are all existing technologies and can be set according to actual needs, so they will not be elaborated on further.

[0023] The working principle of this utility model is as follows: When in use, the module layout is determined according to the customer's initial requirements, such as "left closing and right opening"; According to the requirements, the closing crank arm 12 and the opening crank arm 13 are combined on the drive shaft 6 through the limit tube 14, and the combined drive shaft 6 is installed on the two partition base plates 5 inside the housing 1 through the limit end ring 11. Then, insert the top of the support plate 10 of the closing module 3 between the two left partition top plates 2, and insert the opening module 4 between the two right partition top plates, so that the combination hole is aligned with the mounting hole, and fix it with screws. Then, fix the support plate 10 on one side of the bottom of the closing module 3 and the opening module 4 to the corresponding hole on the surface of the partition bottom plate 5. Then connect the closing crank arm 12 to the closing module 3 and the opening crank arm 13 to the opening module 4 to complete the initial assembly. When the left and right positions need to be interchanged, disconnect the circuit breaker power supply, remove the bolts connecting the support plate 10 and the partition top plate 2, separate the closing crank arm 12 from the closing module 3, separate the opening crank arm 13 from the opening module 4, and take out the closing module 3 and the opening module 4. Then, the drive shaft 6 is removed by removing the limit end ring 11. The closing crank arm 12, the opening crank arm 13, and the limit tube 14 are slid out and reassembled into a new drive shaft 6 as needed. The drive shaft 6 is then installed on the two partition bottom plates 5 inside the housing 1 by the limit end ring 11. After swapping the positions of the closing module 3 and the opening module 4, align the combination hole with the mounting hole, tighten the screws to secure them, and then reconnect each structure in sequence to complete the position interchange. During the position interchange process, the energy storage crank arm 9 can be separated from the energy storage shaft 7, and then the position of the extended end of the energy storage shaft 7 can be changed by sliding the energy storage shaft 7. The energy storage crank arm 9 and the energy storage spring 8 can be installed on the other side of the closing module 3 so that the energy storage spring 8 and the energy storage crank arm 9 are always located in the center position inside the housing 1.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A left-right interchangeable modular circuit breaker comprising a housing (1), characterized in that: Four partition top plates (2) are fixedly connected to the top of the inner cavity of the housing (1), and partition bottom plates (5) are symmetrically fixedly connected to the bottom sides of the inner cavity of the housing (1). A closing module (3) and a opening module (4) are provided in the middle of the housing (1). A drive shaft (6) is provided on one side of the closing module (3) and the opening module (4). A closing crank arm (12), an opening crank arm (13), and a limit tube (14) are sleeved in the middle of the drive shaft (6). Limit end rings (11) are symmetrically sleeved at both ends of the drive shaft (6). Both the closing module (3) and the opening module (4) include two support plates (10). The closing module (3) includes an energy storage mechanism, which includes an energy storage shaft (7) that passes through the support plate (10). One end of the energy storage shaft (7) is fitted with an energy storage crank arm (9), and one end of the energy storage crank arm (9) is connected to an energy storage spring (8).

2. A modular circuit breaker with interchangeable left and right sides according to claim 1, characterized in that: The bottom ends of the partition plate (2) are provided with mounting holes, and the top of the support plate (10) is provided with combination holes corresponding to the mounting holes.

3. The left-right interchangeable molded circuit breaker of claim 1, wherein: A stabilizing shaft is fixedly connected between the two partition top plates (2) in the middle, and the top of the two support plates (10) of the closing module (3) is located between the two partition top plates (2) on one side.

4. A modular circuit breaker with interchangeable left and right sides according to claim 1, characterized in that: The tops of the two support plates (10) of the tripping module (4) are located between the two partition top plates (2) on the other side, and the distance between the two support plates (10) of the closing module (3) is the same as the distance between the two support plates (10) of the tripping module (4).

5. The left-right interchangeable molded circuit breaker of claim 1, wherein: The support plate (10) has an arc-shaped groove on the side near the drive shaft (6) that corresponds to the drive shaft (6), and the drive shaft (6) is located in the middle of the arc-shaped groove.

6. The left-right interchangeable molded circuit breaker of claim 1, wherein: The two ends of the drive shaft (6) pass through the middle of the partition base plate (5), and the limiting end ring (11) is located on the opposite side of the two partition base plates (5).

7. The left-right interchangeable molded circuit breaker of claim 1, wherein: The closing crank arm (12) corresponds to the closing module (3), and the opening crank arm (13) corresponds to the opening module (4).

8. The left-right interchangeable molded circuit breaker of claim 1, wherein: The number of limit tubes (14) is multiple, and the multiple limit tubes (14) are respectively arranged between the limit end ring (11), the closing crank arm (12) and the opening crank arm (13). The drive shaft (6) is splinedly connected to the closing crank arm (12) and the opening crank arm (13).

Images