Direct-acting vacuum circuit breaker

Abstract

The utility model discloses a direct-acting vacuum circuit breaker. The direct-acting vacuum circuit breaker comprises a mounting plate, a plurality of solid-sealed polar poles with consistent structures are arranged on one surface of the mounting plate, and one end, far away from the mounting plate, of each solid-sealed polar pole is connected with an arranged isolation outgoing line terminal; the solid-sealed polar pole is further provided with a guide pipe, a guide shaft is arranged in the guide pipe, and the guide shaft is promoted to slide in the guide pipe through an arranged screw rod, so that the guide shaft is in contact with or separated from the isolated outgoing line terminal, and the cut-off or conduction of a circuit is completed. The screw rod penetrates through the mounting plate and then is connected with chain wheels, and the chain wheels on each solid-sealed polar pole are connected through a chain. According to the equipment, the guide shaft is driven to slide along a straight line in the guide pipe through rotation of the screw; and the chain wheel of each screw rod is driven to rotate by the chain, so that the guide shafts in each solid-sealed polar pole can move synchronously. Therefore, the circuit breaker is simple and convenient to operate and rapid and reliable in circuit on-off.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit devices, in particular to a direct-acting vacuum circuit breaker. Background Art

[0002] Circuit breakers are commonly used components in electrical equipment. In addition to their control functions, they also have certain protection functions. They are widely used in the incoming and outgoing lines of low-voltage distribution systems at all levels, power supply control of various mechanical equipment, and control and protection of power terminals. Typical circuit breakers are divided into plug-in, fixed, and drawer types according to the installation method, among which plug-in circuit breakers are the most widely used. Traditional plug-in circuit breakers with automatic opening and closing functions mostly adopt an electric motor + gear reduction structure, and are controlled by an electronic control panel to achieve electric operation. The opening and closing operating mechanism is transmitted to the contact system using a four-bar linkage mechanism. This is a traditional mechanical circuit breaker + motor reduction mechanism technical solution. Its overall structure is relatively complex, the cost is high, the response speed is not fast enough, and sometimes it cannot be effectively maintained after the opening and closing is completed, resulting in insufficient product reliability. Utility Model Content

[0003] The purpose of the present utility model is to provide a direct-acting vacuum circuit breaker to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a direct-acting vacuum circuit breaker, comprising a mounting plate; a plurality of sealed poles with the same structure are provided on one side of the mounting plate, and the end of the sealed pole away from the mounting plate is connected to an isolated output terminal; a guide tube is also provided on the sealed pole, a guide shaft is provided in the guide tube, and the guide shaft is caused to slide inside the guide tube by a screw, so that the guide shaft contacts or separates from the isolated output terminal to complete the circuit cutting or conducting; the screw passes through the mounting plate and is connected to a sprocket, and the sprockets on each of the sealed poles are connected by a chain.

[0005] As an optimal technical solution of the present invention: a slide groove is further provided in the radial direction of the guide shaft, and a mounting hole is further provided in the radial direction of the guide tube, and a bolt is passed through the mounting hole and connected to the slide groove so that the slide groove slides along the bolt.

[0006] As an optimal technical solution of the present invention: a gear box is further provided on the mounting plate, and an output shaft of the gear box is connected to the sprocket.

[0007] As a preferred technical solution of the present invention: the input shaft of the gear box is connected to a provided handle.

[0008] As a preferred technical solution of the present invention: a through hole is further provided on the end surface of the guide shaft.

[0009] By adopting the above technical solution, the present invention achieves the following beneficial effects: the device utilizes the rotation of the screw to cause the guide shaft to slide linearly within the guide tube; the chain simultaneously drives the rotation of the sprocket of each screw, thereby enabling the guide shaft within each sealed pole to move synchronously. This results in the circuit breaker being simple and convenient to operate, and enabling rapid and reliable circuit switching. In particular, the device utilizes a mechanical mechanism to achieve power output, thereby achieving the advantages of lower operating and maintenance costs compared to existing technologies while maintaining reliability and sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0011] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0012] Figure 3 It is a side structural diagram of the utility model;

[0013] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0014] Figure 5 It is a front structural schematic diagram of the present utility model.

[0015] In the figure: 1. Mounting plate; 2. Chain; 3. Sealed pole; 4. Guide shaft; 5. Isolation terminal; 6. Slide groove; 7. Screw; 8. Guide tube; 9. Handle; 10. Sprocket; 11. Gearbox; 12. Mounting hole; 13. Through hole. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limitations on the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, and does 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 construed as a limitation on the present invention.

[0017] See also Figure 1-5, the utility model provides an embodiment: a direct-acting vacuum circuit breaker, comprising a mounting plate 1; a plurality of sealed poles 3 with the same structure are provided on one side of the mounting plate 1, and the end of the sealed pole 3 away from the mounting plate 1 is connected to the isolated output terminal 5; a guide tube 8 is also provided on the sealed pole 3, a guide shaft 4 is provided in the guide tube 8, and the guide shaft 4 is caused to slide inside the guide tube 8 by a screw 7, so that the guide shaft 4 contacts or separates from the isolated output terminal 5 to complete the circuit cutting or conducting; the screw 7 passes through the mounting plate 1 and is connected to the sprocket 10, and the sprocket 10 on each of the sealed poles 3 is connected by a chain 2.

[0018] In summary, this device utilizes the rotation of screw 7 to cause guide shaft 4 to slide linearly within guide tube 8. Chain 2 then simultaneously rotates sprocket 10 of each screw 7, thereby enabling the synchronous movement of guide shaft 4 within each sealed pole 3. This results in a circuit breaker that is simple and convenient to operate, with rapid and reliable circuit switching. In particular, the device utilizes a mechanical mechanism to deliver power, offering advantages over existing technologies, including reliability and sensitivity while also reducing operational and maintenance costs.

[0019] Furthermore, since the guide shaft 4 is provided with a radially extending groove 6 and the guide tube 8 is provided with a radially extending mounting hole 12, a bolt is inserted through the mounting hole 12 and connected to the groove 6, allowing the groove 6 to slide along the bolt. Therefore, once the bolt is inserted into the groove 6, when the screw 7 rotates, axial rotation of the guide shaft 4 is effectively prevented, further ensuring the directional movement of the guide shaft 4 and improving the reliability and stability of the contact between the guide shaft 4 and the isolated output terminal 5. The bolt is threadedly engaged with the mounting hole 12.

[0020] On the basis of the above scheme, since a gear box 11 is also provided on the mounting plate 1, and the output shaft of the gear box 11 is connected to the sprocket 10, the gear set in the gear box 11 can be used to increase the rotation speed of the chain 2, thereby increasing the contact speed and separation speed of the guide shaft 4 and the isolated output terminal 5; wherein, the gear box 11 is purchased on the market, so its structure can refer to the existing technology.

[0021] Furthermore, since the input shaft of the gear box 11 is connected to the handle 9, the guide shaft 4 can be caused to contact the isolated output terminal 5 by rotating the handle 9; wherein, when the handle 9 is driven by an external force, the gear set in the gear box 11 is caused to rotate, and through the rotation of the gear set, the driving wheel of the handle 9 is accelerated and output to the chain 2, and the screw 7 is driven to rotate through the chain 2.

[0022] In addition, a through hole 13 is provided on the end surface of the guide shaft 4 , thereby reducing the weight of the guide shaft 4 while increasing the contact area with the airflow, thereby facilitating the flow of airflow to remove heat from the guide shaft 4 .

[0023] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A direct-acting vacuum circuit breaker, characterized in that: It comprises a mounting plate (1); a plurality of solid-sealed poles (3) of the same structure are provided on one side of the mounting plate (1); an end of the solid-sealed pole (3) away from the mounting plate (1) is connected to an isolated output terminal (5); The sealed pole (3) is further provided with a guide tube (8), a guide shaft (4) is provided in the guide tube (8), and a screw (7) is provided to cause the guide shaft (4) to slide inside the guide tube (8), so that the guide shaft (4) contacts or separates from the isolated output terminal (5) to complete the circuit disconnection or conduction; The screw rod (7) passes through the mounting plate (1) and is connected to a provided sprocket (10), and the sprocket (10) on each of the sealed poles (3) is connected via a provided chain (2).

2. A direct-acting vacuum circuit breaker according to claim 1, characterized in that: The guide shaft (4) is further provided with a slide groove (6) in the radial direction, and the guide tube (8) is further provided with a mounting hole (12) in the radial direction. Bolts are passed through the mounting hole (12) and connected to the slide groove (6) so that the slide groove (6) slides along the bolts.

3. A direct-acting vacuum circuit breaker according to claim 1 or 2, characterized in that: A gear box (11) is also provided on the mounting plate (1), and an output shaft of the gear box (11) is connected to the sprocket (10).

4. A direct-acting vacuum circuit breaker according to claim 3, characterized in that: The input shaft of the gear box (11) is connected to a handle (9).

5. A direct-acting vacuum circuit breaker according to claim 4, characterized in that: A through hole (13) is also provided on the end surface of the guide shaft (4).

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