A circuit breaker wiring device that facilitates wire securement
By combining the positioning frame and mounting bracket with the synergistic effect of the side pressure plate and clamping toothed plate, the problems of manual dependence and environmental influence on traditional circuit breaker terminals are solved, achieving a stable connection of the conductors and reliable electrical contact, thus improving the operational reliability and ease of operation of the circuit breaker.
Patent Information
- Application Number
- CN202521955495.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-11
AI Technical Summary
Traditional screw-type high-voltage circuit breaker terminals rely on manual operation, resulting in unstable wiring quality. In outdoor environments, conductors are prone to loosening or poor contact due to wind, vibration, and thermal expansion, affecting the reliability of circuit breaker operation.
The positioning frame and mounting bracket are fitted together, and the side pressure plate, limit groove, limit baffle, compression spring and clamping tooth plate are designed to achieve a stable clamping of the wire, ensure multi-point contact connection and avoid loosening and poor contact.
It improves the mechanical and electrical stability of conductor connections, reduces the risk of failure, simplifies installation and maintenance procedures, and enhances the reliability and flexibility of circuit breakers in outdoor high-voltage environments.
Smart Images
Figure CN224683019U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of outdoor high-voltage circuit breaker technology, and in particular to a circuit breaker wiring device that facilitates wire fastening. Background Technology
[0002] Outdoor high-voltage circuit breakers are electrical switching devices specifically designed for high-voltage power systems. They are typically installed in outdoor substations or high-voltage transmission lines to connect and disconnect circuits and protect the power system. They can quickly interrupt current in the event of a short circuit, overload, or other fault, thus protecting electrical equipment and transmission lines. Power supply can be restored by reclosing the circuit after the fault has been cleared. Outdoor high-voltage circuit breakers typically possess characteristics such as strong weather resistance, corrosion resistance, weather resistance, and pollution resistance. They often use air, oil, vacuum, or a gas (such as sulfur hexafluoride) as the arc-extinguishing medium.
[0003] As crucial control and protection devices in power systems, high-voltage circuit breakers directly impact the safe and stable operation of the entire power grid through the reliability of their wiring components. Currently, traditional circuit breaker wiring typically employs screw-type terminals. While simple to operate, this method relies heavily on manual labor, and the wiring quality is significantly affected by the skill level and operating habits of the installers. Overtightening the screws can damage the conductors, reducing the contact area; undertightening them can lead to poor contact, excessive temperature rise, and even serious accidents like fires. Furthermore, outdoor high-voltage circuit breakers often operate in harsh environments, where conductors are susceptible to wind, vibration, and thermal expansion, potentially causing poor contact or swaying, thus affecting the circuit breaker's reliability. Therefore, this method has certain limitations in its application.
[0004] Based on this, we propose a circuit breaker wiring device that facilitates wire fastening to solve the aforementioned problems. Utility Model Content
[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0006] Therefore, the purpose of this utility model is to provide a circuit breaker wiring device that facilitates wire fastening, which can solve the problems of traditional screw-clamping high-voltage circuit breaker terminals being heavily reliant on manual operation, having unstable wiring quality, and having wires that are easily loosened or have poor contact due to wind, vibration and thermal expansion in outdoor environments, thus affecting the reliability of circuit breaker operation.
[0007] To solve the above-mentioned technical problems, this utility model provides a circuit breaker wiring device that facilitates wire fastening, and adopts the following technical solution: it includes an operating mechanism box, the top of which is equipped with several sets of vacuum interrupters, a current transformer is provided in the middle of one side of each set of vacuum interrupters, and fastening wiring assemblies are respectively connected to the top of each set of vacuum interrupters. The fastening wiring assembly includes a first wiring component, and a second wiring component is provided on the top of the first wiring component.
[0008] Optionally, the second wiring assembly includes a fixed end cap, the bottom of which is connected to a positioning frame. Side pressure plates are respectively provided on the inner side of the positioning frame. A first wire-passing hole is provided through one side of the positioning frame, and a wire-laying groove is also provided on the side of the positioning frame near the first wire-passing hole.
[0009] Optionally, an adjustment cavity is provided in the middle of the positioning frame, and limit grooves are provided on both sides of the adjustment cavity. A second threading hole is also provided in the middle of the bottom of the positioning frame.
[0010] Optionally, a limiting baffle is installed on one side of the side pressure plate. The limiting baffle is matched with the limiting groove structure. Compression springs are connected between the two ends of the limiting baffle and the limiting groove. A first clamping tooth plate is also installed in the middle of the limiting baffle.
[0011] Optionally, the first wiring component includes a mounting bracket, the bottom of which is connected to a first connecting flange, the bottom of which is connected to a conductive screw, and the mounting bracket has an internal mounting cavity that matches the structure of the positioning frame. The mounting cavity and the positioning frame are in a transition fit. The bottom of the positioning frame and the mounting cavity are respectively provided with second clamping teeth. A third wire through hole is also provided on one side of the mounting bracket.
[0012] Optionally, a second connecting flange is installed on the top of several sets of vacuum interrupters. The second connecting flange is structurally compatible with the first connecting flange. A fixing screw hole is also provided in the middle of the second connecting flange. The fixing screw hole is structurally compatible with the conductive screw rod. The fixing screw hole and the conductive screw rod are threaded together.
[0013] In summary, this utility model has at least one of the following beneficial effects: 1. The circuit breaker wiring device designed in this scheme, through the transition fit between the positioning frame and the mounting bracket, and the synergistic action of the side pressure plate, the limiting groove, the limiting baffle, the compression spring, and the first clamping tooth plate, can firmly limit and clamp the metal conductor, achieving safe fixation of the conductor inside the mounting bracket. The toothed structure of the first clamping tooth plate can firmly bite the metal conductor, effectively preventing the conductor from loosening or falling off during the connection with the vacuum interrupter, thereby ensuring reliable electrical contact between the conductor and the circuit breaker wiring components. This design not only improves the mechanical and electrical stability of the conductor connection, but also reduces the risk of faults caused by poor contact, ensuring the long-term stable operation of the circuit breaker in outdoor high-voltage environments and providing a guarantee for the safe and reliable power supply of the power grid. At the same time, by eliminating the problems of excessively tight screws damaging the conductor or excessively loose screws causing poor contact that may occur in traditional screw tightening methods, the safety and durability of the wiring operation are significantly improved, achieving high reliability of the circuit breaker wiring device in complex working environments.
[0014] 2. The circuit breaker wiring device designed in this scheme achieves multi-point contact connection between the metal conductor and the vacuum interrupter by adding a second clamping toothed plate to the bottom of the positioning frame and the installation cavity. This enhances the stability of the conductor connection and prevents poor contact or shaking caused by factors such as wind, vibration, and thermal expansion. At the same time, the device simplifies the disassembly and assembly steps between the metal conductor and the vacuum interrupter, reduces the skill requirements for construction personnel, and reduces the time and cost required for installation and maintenance. It achieves high efficiency and convenience in wiring operations. Through the coordinated cooperation of the first and second clamping toothed plates, reliable connection of the metal conductor can be ensured under multi-point stable clamping. This improves the flexibility and practicality of the circuit breaker wiring device in outdoor high-voltage environments, making it easier to promote and apply, and ensuring the safe and stable operation of the power system. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a disassembled schematic diagram of the fastening wiring assembly of this utility model; Figure 3 This is a schematic diagram of the second wiring assembly of this utility model; Figure 4 This is a schematic diagram of the first clamping toothed plate structure of this utility model; Figure 5 This is a sectional view of the mounting bracket of this utility model; Figure 6 This is a schematic diagram of the second connecting flange structure of this utility model.
[0017] Explanation of reference numerals in the attached drawings: 1. Operating mechanism box; 2. Vacuum interrupter; 3. Current transformer; 4. Fastening wiring assembly; 5. First wiring component; 6. Second wiring assembly; 7. Fixed end cover; 8. Positioning frame; 9. Side pressure plate; 10. First wire hole; 11. Cable tray; 12. Adjustment cavity; 13. Limiting stop groove; 14. Second wire hole; 15. Limiting stop plate; 16. Compression spring; 17. First clamping toothed plate; 18. Mounting bracket; 19. First connecting flange; 20. Conductive screw; 21. Mounting cavity; 22. Second clamping toothed plate; 23. Third wire hole; 24. Second connecting flange; 25. Fixing screw hole. 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] Example: Refer to Figures 1 to 6 This utility model provides an embodiment of a circuit breaker wiring device that facilitates wire fastening. It includes an operating mechanism box 1, with several sets of vacuum interrupters 2 mounted on the top of the operating mechanism box 1. A current transformer 3 is disposed in the middle of one side of each set of vacuum interrupters 2. Fastening wiring assemblies 4 are also connected to the top of each set of vacuum interrupters 2. Each fastening wiring assembly 4 includes a first wiring component 5, and a second wiring component 6 is disposed on the top of the first wiring component 5. This circuit breaker wiring device utilizes a structural design with a transition fit between the mounting cavity 21 and the positioning frame 8, with a current transformer 3 connected in the middle. When the positioning frame 8 of the metal wire is inserted into the mounting bracket 18, it can apply a pushing force to the side pressure plates 9 installed on both sides of the positioning frame 8. The two sets of side pressure plates 9 that apply the pushing force can limit and clamp the metal wire passing through the middle of the positioning frame 8 through the cooperation of the limiting groove 13, the limiting baffle 15, the compression spring 16 and the first clamping tooth plate 17. The toothed structure of the two sets of first clamping tooth plates 17 can firmly bite the metal wire passing through the middle of the positioning frame 8, which can prevent the metal wire from loosening or falling off when connected to the vacuum interrupter 2.
[0020] The second wiring assembly 6 includes a fixed end cap 7, with a positioning frame 8 connected to the bottom of the fixed end cap 7. Side pressure plates 9 are respectively provided on the inner side of the positioning frame 8. A first wire-passing hole 10 is provided through one side of the positioning frame 8, and a wire-laying groove 11 is also provided on the side of the positioning frame 8 near the first wire-passing hole 10. By adding side pressure plates 9 to the inner side of the positioning frame 8, a bidirectional clamping force can be applied to the inside of the positioning frame 8, which has a metal wire connected in the middle. This can stabilize the position of the metal wire in the positioning frame 8, preventing the wire from loosening or shifting during installation or operation, thus achieving reliable fixing of the wire inside the positioning frame 8. An adjustment cavity 12 is provided in the middle of the positioning frame 8, with limit stop grooves 13 on both sides of the adjustment cavity 12. A second wire-passing groove 11 is also provided through the middle of the bottom of the positioning frame 8. The wire hole 14, through the second wire hole 14 opened in the middle of the bottom of the positioning frame 8, allows the metal wire to be smoothly led out from the bottom of the positioning frame 8. A limit baffle 15 is installed on one side of the side pressure plate 9. The limit baffle 15 is structurally matched with the limit groove 13. Compression springs 16 are connected between the two ends of the limit baffle 15 and the limit groove 13. A first clamping tooth plate 17 is also installed in the middle of the limit baffle 15. Through the coordinated cooperation between the limit groove 13, the limit baffle 15, the compression spring 16 and the first clamping tooth plate 17, the side pressure plate 9 can apply a stable bidirectional clamping force to the metal wire passing through the middle of the positioning frame 8. Through the tooth structure of the two sets of first clamping tooth plates 17, the metal wire can be firmly engaged, ensuring that the metal wire does not loosen or shift during installation or operation.
[0021] The first wiring component 5 includes a mounting bracket 18. A first connecting flange 19 is connected to the bottom of the mounting bracket 18, and a conductive screw 20 is connected to the bottom of the first connecting flange 19. An mounting cavity 21 is provided inside the mounting bracket 18, and the mounting cavity 21 is structurally matched with the positioning frame 8. The mounting cavity 21 and the positioning frame 8 have a transition fit. Second clamping teeth 22 are respectively provided at the bottom of the positioning frame 8 and the mounting cavity 21. A third wire-passing hole 23 is also provided through one side of the mounting bracket 18. By adding the second clamping teeth 22 to the bottom of the positioning frame 8 and the mounting cavity 21, when the positioning frame 8, with a metal wire connected in the middle, is inserted into the mounting bracket 18, the exposed end of the metal wire at the bottom of the positioning frame 8 can be firmly gripped by the bidirectional clamping action of the two sets of second clamping teeth 22. To prevent poor contact or shaking of the metal conductors due to external factors such as wind, vibration, or thermal expansion, several sets of vacuum interrupters 2 are equipped with a second connecting flange 24 on their tops. The second connecting flange 24 is structurally matched with the first connecting flange 19. A fixing screw hole 25 is also provided in the middle of the second connecting flange 24. The fixing screw hole 25 is structurally matched with the conductive screw 20. The fixing screw hole 25 and the conductive screw 20 are threaded together. Through the structural design of the threaded engagement between the fixing screw hole 25 and the conductive screw 20, the fastening wiring assembly 4 can be quickly and reliably connected to the top of the vacuum interrupter 2. Through the structural design of the matching of the second connecting flange 24 and the first connecting flange 19, bolts and other fasteners can also be used to fix the fastening wiring assembly 4 that has been quickly connected to the top of the vacuum interrupter 2.
[0022] Working Principle: The circuit breaker wiring device designed in this scheme mainly consists of a first wiring component 5 and a second wiring assembly 6. The second wiring assembly 6 includes a fixed end cover 7, a positioning frame 8, and a side pressure plate 9. When the metal wire passes through the third wire hole 23, the first wire hole 10, and the second wire hole 14 in sequence, it passes through the mounting cavity 21 opened inside the mounting bracket 18. Since the mounting cavity 21 matches the structure of the positioning frame 8, and the mounting cavity 21 and the positioning frame 8 have a transition fit, the positioning frame 8 can be stably inserted into the inside of the mounting bracket 18. When the positioning frame 8 with the metal wire is inserted into the mounting bracket 18, a pushing force can be applied to the side pressure plates 9 installed on both sides of the positioning frame 8. The two sets of side pressure plates 9 with the applied pushing force can limit and clamp the metal wire passing through the middle of the positioning frame 8 through the coordinated cooperation between the limiting groove 13, the limiting baffle 15, the compression spring 16 and the first clamping tooth plate 17. The toothed structure of the two sets of first clamping tooth plates 17 can firmly bite the metal wire passing through the middle of the positioning frame 8, preventing the metal wire from loosening or falling off when connected to the vacuum interrupter 2.
[0023] The circuit breaker wiring device designed in this scheme, by adding second clamping toothed plates 22 to the bottom of the positioning frame 8 and the mounting cavity 21 respectively, allows the exposed end of the metal wire at the bottom of the positioning frame 8, which is connected to the metal wire in the middle, to be firmly engaged under the bidirectional clamping action of the two sets of second clamping toothed plates 22 when the positioning frame 8 is inserted into the mounting bracket 18. Through the coordinated cooperation between the first clamping toothed plate 17 and the second clamping toothed plate 22, this scheme can achieve multi-point contact connection between the metal wire and the vacuum interrupter 2, while also preventing poor contact or shaking of the metal wire due to factors such as wind, vibration and thermal expansion. This ensures the stability of the connection between the metal wire and the vacuum interrupter 2. As can be seen from the above structural design, this circuit breaker wiring device can eliminate the problems of traditional bolt connections, such as the wire being damaged by overtightening the screws or the poor contact being caused by loosening them. At the same time, it can simplify the disassembly and assembly steps between the metal wire and the vacuum interrupter 2, thereby improving the flexibility and practicality of the device in the field of outdoor high-voltage circuit breaker technology.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 circuit breaker wiring device for easy wire fastening, comprising an operating mechanism box (1), characterized in that: The top of the operating mechanism box (1) is equipped with several sets of vacuum interrupters (2), and a current transformer (3) is provided in the middle of one side of several sets of vacuum interrupters (2). The top of several sets of vacuum interrupters (2) is also connected with fastening wiring assemblies (4). The fastening wiring assembly (4) includes a first wiring component (5), and a second wiring assembly (6) is provided on the top of the first wiring component (5).
2. The circuit breaker wiring device for easy wire fastening according to claim 1, characterized in that: The second wiring assembly (6) includes a fixed end cap (7), the bottom of which is connected to a positioning frame (8), and the inner side of the positioning frame (8) is provided with a side pressure plate (9). A first wire hole (10) is provided through one side of the positioning frame (8), and a wiring groove (11) is also provided on the side of the positioning frame (8) near the first wire hole (10).
3. A circuit breaker wiring device for easy wire fastening according to claim 2, characterized in that: The positioning frame (8) has an adjustment cavity (12) in the middle, and limit grooves (13) are respectively opened on both sides of the adjustment cavity (12). The bottom center of the positioning frame (8) also has a second thread hole (14).
4. A circuit breaker wiring device for easy wire fastening according to claim 3, characterized in that: A limiting baffle (15) is installed on one side of the side pressure plate (9). The limiting baffle (15) is structurally matched with the limiting groove (13). Compression springs (16) are connected between the two ends of the limiting baffle (15) and the limiting groove (13). A first clamping tooth plate (17) is also installed in the middle of the limiting baffle (15).
5. A circuit breaker wiring device for easy wire fastening according to claim 4, characterized in that: The first wiring component (5) includes a mounting bracket (18), the bottom of which is connected to a first connecting flange (19), the bottom of which is connected to a conductive screw (20), the mounting bracket (18) has an internal mounting cavity (21), the mounting cavity (21) matches the structure of the positioning frame (8), the mounting cavity (21) and the positioning frame (8) are in transition fit, the bottom of the positioning frame (8) and the mounting cavity (21) are respectively provided with a second clamping tooth plate (22), and a third wire hole (23) is also provided through one side of the mounting bracket (18).
6. A circuit breaker wiring device for easy wire fastening according to claim 1, characterized in that: The top of each of the several sets of vacuum interrupters (2) is equipped with a second connecting flange (24). The second connecting flange (24) is structurally matched with the first connecting flange (19). A fixing screw hole (25) is also provided in the middle of the second connecting flange (24). The fixing screw hole (25) is structurally matched with the conductive screw (20). The fixing screw hole (25) and the conductive screw (20) are threaded together.