Contact knife structure of outdoor high-voltage vacuum circuit breaker

Abstract

The utility model relates to the technical field of contact knife structures, and particularly discloses an outdoor high-voltage vacuum circuit breaker contact knife structure, which comprises a rod body, the rod body comprises a contact knife main body, one end of the contact knife main body is fixedly provided with a butterfly plate, and the other end of the contact knife main body is fixedly provided with a single conductive contact; a protruding block is fixedly arranged on one side of the butterfly-shaped plate, a round hole is formed in the protruding block, and a first through hole and a second through hole are formed in the contact knife body and used for installing the contact knife in an attached mode. According to the outdoor high-voltage vacuum circuit breaker contact knife structure, on the basis of an existing contact knife structure, a single contact is designed, the structure of the contact knife is simplified, the situation that the end of the contact knife is bent and deformed is avoided, the effect that the contact knife is attached to a contact for closing is improved, the use stability of the contact knife is improved, the production efficiency is improved, and the production cost is reduced; the contact knife is connected through the two through holes, so that the parallel effect of actual installation of the contact knife can be improved, the structure of the contact knife is ensured, the good attaching effect of the contact knife and the contact is ensured during long-term opening and closing operation of the contact knife, and the conductive effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of contact blade structures, in particular to a contact blade structure of an outdoor high-voltage vacuum circuit breaker. Background Art

[0002] Outdoor high-voltage vacuum circuit breaker is a high-voltage electrical appliance that is used to realize circuit opening and closing operations through the contacts of the vacuum circuit breaker.

[0003] In the prior art, the name disclosed in the application number: CN201921123982.8 is: outdoor AC high-voltage vacuum circuit breaker, which includes a circuit breaker body and an isolating switch arranged on one side of the circuit breaker body, the circuit breaker body includes a mechanism box, an operating mechanism arranged in the mechanism box and a pole arranged on the upper part of the mechanism box; the isolating switch includes a mounting frame fixed to the side of the mechanism box, a rotating shaft rotatably mounted on the mounting frame for driving the contact knife to move, and the contact knife adopts a double contact structure.

[0004] However, the double-contact knife mentioned in the prior art increases the difficulty and cost of production in actual production, and during the opening and closing operation of the double-contact knife, the contact near the end of the knife will be deformed and tilted outward, and will be disconnected from the contact, affecting the closing effect of the knife and the contact. Therefore, it is necessary to design a knife structure for an outdoor high-voltage vacuum circuit breaker. Utility Model Content

[0005] The utility model aims to provide a contact blade structure of an outdoor high-voltage vacuum circuit breaker to solve the problems in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A contact blade structure of an outdoor high-voltage vacuum circuit breaker, the contact blade structure is rotatably installed in the outdoor high-voltage vacuum circuit breaker, and comprises a rod body, wherein the rod body comprises a contact blade body, one end of the contact blade body is fixedly provided with a butterfly plate, and the other end is fixedly provided with a single contact point for conducting electricity;

[0008] A protrusion is fixedly provided on one side of the butterfly plate, a round hole is provided on the protrusion, and a through hole 1 and a through hole 2 are opened on the contact knife body for fitting and connecting the contact point with the contact of the vacuum circuit breaker.

[0009] Furthermore, the rod body is made of copper.

[0010] Furthermore, the surface of the rod body is plated with a tin layer for corrosion resistance.

[0011] Furthermore, side rods are fixedly provided on both sides of the touch knife body, the side rods are vertically connected to the two sides of the touch knife body, and the side rods and the touch knife body are an integrally formed structure.

[0012] Furthermore, a circular groove is provided on one side of the butterfly plate away from the protrusion, and the circular groove is coaxial with the circular hole.

[0013] Furthermore, a through hole is provided on the touch knife body, and the through hole is used for connecting and installing the touch knife. The through hole is located on one side of the circular hole, and the through hole 1 and the through hole 2 are located on one side of the contact point.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model outdoor high-voltage vacuum circuit breaker contact blade structure is designed with a single contact point on the existing contact blade structure, which simplifies the structure of the contact blade and avoids the bending and deformation of the contact blade end, improves the contact blade fitting contact closing effect, improves the stability of the contact blade, improves production efficiency and reduces production costs;

[0016] 2. The contact blade structure of the utility model outdoor high-voltage vacuum circuit breaker is designed with a through hole 1 and a through hole 2 on the contact blade. The two through holes are used to connect the two relatively installed contact blades, which can improve the parallel effect of the actual installation of the contact blades and ensure the structure of the contact blades. When the contact blades are operated for a long time, the contact blades and the contacts are well attached to each other, thereby improving the conductive effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a side view of the contact structure of the utility model;

[0020] Figure 3 It is a cross-sectional view of the touch knife structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the touch knife structure of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] A contact blade structure of an outdoor high-voltage vacuum circuit breaker, such as Figure 1As shown, the contact blade structure is rotatably installed in the outdoor high-voltage vacuum circuit breaker, and the contact blade structure is controlled to rotate in the outdoor high-voltage vacuum circuit breaker and connected to the internal structure of the outdoor vacuum circuit breaker to connect and conduct current.

[0024] like Figure 1-Figure 4 As shown, the contact blade structure includes a rod body 1, which is made of copper and has a tin layer plated on its surface. Tin plating can improve the electrical conductivity of the copper rod body 1 and increase the corrosion resistance of the rod body 1.

[0025] The rod body 1 includes a knife touch body 11, and side rods 12 are fixedly provided on both sides of the knife touch body 11. The side rods 12 are vertically arranged on both sides of the knife touch body 11 and fixedly connected to the knife touch body 11. The side rods 12 and the knife touch body 11 are an integrally formed structure.

[0026] A butterfly plate 13 is fixedly provided at one end of the touch knife body 11, and the butterfly plate 13 is fixedly connected to the touch knife body 11, thereby increasing the connection strength between the touch knife body 11 and the butterfly plate 13 and avoiding the risk of breakage at the end of the touch knife body 11. A protrusion 14 is fixedly provided on one side of the butterfly plate 13, and a circular hole 15 is formed on the protrusion 14. A circular groove 16 is formed on the other side of the butterfly plate 13, and the circular groove 16 is coaxially arranged with the circular hole 15.

[0027] While the circular groove 16 is stamped on one side of the butterfly plate 13, the protrusion 14 can be formed on the other side thereof, and then the circular hole 15 is milled out. The production and preparation operation is simple, and the forming process is stable. The prepared butterfly plate 13 has a smooth surface and no burrs, and is suitable for use in the high-voltage current environment of the vacuum circuit breaker.

[0028] A contact 17 is fixedly provided on one end of the touch knife body 11 away from the butterfly plate 13. The contact 17 adopts a single contact structure. The contact 17 is produced by stamping. Compared with the prior art, the touch knife is provided with two contact structures, and the two contact structures are easily lifted up when the touch knife is rotated and connected in an actual working environment, resulting in a poor connection effect of the two contacts. The single contact structure of this embodiment is simple to prepare, reduces production costs, and simplifies the structure on the touch knife body 11.

[0029] A through hole 18 is provided on the contact knife body 11, and the through hole 18 is used to connect the internal driving structure installed in the vacuum circuit breaker. A through hole 19 and a through hole 2 10 are provided on the contact knife body 11. The through hole 18 is close to the side of the circular hole 15, and the through hole 19 and the through hole 2 10 are close to the side of the contact 17. Compared with the single mounting hole on the contact knife in the prior art, two mounting holes are added, namely the through hole 19 and the through hole 2 10, which can improve the installation and connection flexibility of the contact knife and improve the stability of the connection between the two contact knives, facilitate the keeping of the contacts 17 on the two relatively installed and connected contact knives in parallel, and make the contacts 17 better fit the contacts on the vacuum circuit breaker, thereby improving the stability of the connection and fitting of the contacts 17.

[0030] Working principle:

[0031] A single contact 17 structure is arranged on the contact knife, and a through hole 19 and a through hole 2 10 are opened. The two contact knives are fixedly connected and installed in relative parallel through the through hole 19 or the through hole 2 10, which can improve the stable fit between the single contact 17 and the contact in the vacuum circuit breaker. The structure of the single contact 17 is designed to simplify the structure of the contact, and the contact knife has a larger use area. In actual production, it is beneficial to increase the contact area of ​​the contact 17, improve the connection stability of the contact 17, and have better conductive performance.

[0032] One end of the contact blade body 11 is fixedly connected to the butterfly plate 13 to improve the stability of the connection at the end of the contact blade body 11, making it less likely for the contact blade end connection to break, thereby improving the firmness of the contact blade connection and increasing the service life of the outdoor high-voltage vacuum circuit breaker.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A contact blade structure of an outdoor high-voltage vacuum circuit breaker, the contact blade structure is rotatably installed in the outdoor high-voltage vacuum circuit breaker, comprising a rod body (1), characterized in that: The rod body (1) comprises a knife contact body (11), one end of which is fixedly provided with a butterfly plate (13), and the other end of which is fixedly provided with a single contact point (17) for conducting electricity; A protrusion (14) is fixedly provided on one side of the butterfly plate (13), a circular hole (15) is provided on the protrusion (14), and a through hole 1 (19) and a through hole 2 (10) are provided on the contact blade body (11) for fitting and connecting the contact point (17) with the contact of the vacuum circuit breaker.

2. According to claim 1, a contact blade structure of an outdoor high-voltage vacuum circuit breaker is characterized in that: The rod body (1) is made of copper.

3. According to claim 2, a contact blade structure of an outdoor high-voltage vacuum circuit breaker is characterized in that: The surface of the rod body (1) is plated with a tin layer for corrosion resistance.

4. According to claim 1, a contact blade structure of an outdoor high-voltage vacuum circuit breaker is characterized in that: Side rods (12) are fixedly provided on both sides of the knife touch body (11); the side rods (12) are vertically connected to the two sides of the knife touch body (11); the side rods (12) and the knife touch body (11) are an integrally formed structure.

5. The contact blade structure of an outdoor high-voltage vacuum circuit breaker according to claim 4, characterized in that: A circular groove (16) is provided on the side of the butterfly plate (13) away from the protrusion (14), and the circular groove (16) and the circular hole (15) are coaxial.

6. The contact blade structure of an outdoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The contact knife body (11) is provided with a through hole (18), which is used for contact knife connection and installation. The through hole (18) is located on one side of the circular hole (15), and the through hole 1 (19) and the through hole 2 (10) are located on one side of the contact point (17).

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