CN214900324U - Dual-power automatic transfer switch - Google Patents
Dual-power automatic transfer switch Download PDFInfo
- Publication number
- CN214900324U CN214900324U CN202120637910.6U CN202120637910U CN214900324U CN 214900324 U CN214900324 U CN 214900324U CN 202120637910 U CN202120637910 U CN 202120637910U CN 214900324 U CN214900324 U CN 214900324U
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- contact
- arc cutting
- arc
- plate
- moving contact
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Abstract
The utility model discloses a double-power automatic transfer switch, which comprises a shell frame, and a static contact and a moving contact which are arranged on the shell frame; the moving contact can rotate between a closed position contacted with the fixed contact and an open position separated from the fixed contact, and comprises a contact end which is positioned above the fixed contact; the arc cutting mechanism is used for cutting off an electric arc generated by separation of the moving contact and the fixed contact, the arc cutting mechanism comprises an arc cutting part, the arc cutting part is rotatably connected with the shell frame, the arc cutting part comprises a driving plate and an arc cutting plate which are integrally connected, the driving plate is attached to the top of the contact end when the moving contact is located at an open position, the arc cutting plate extends into a space between the moving contact and the fixed contact, the driving plate is located above the contact end when the moving contact is located at a closed position, and the arc cutting plate is attached to the outer side of the contact end. The utility model relates to a dual supply automatic transfer switch can extinguish with higher speed the electric arc between moving contact and the static contact to be favorable to protecting moving contact and static contact.
Description
Technical Field
The utility model relates to a dual supply automatic transfer switch.
Background
In low voltage distribution systems, automatic transfer switching devices have become an indispensable important component. When the power supply fails, one or more load circuits can be automatically switched from a failure power supply to a standby power supply, so that the important load is ensured not to be powered off when working. At present, an arc extinguishing shield is required to be arranged between a moving contact and a static contact of a change-over switch, electric arcs generated when the moving contact is disconnected enter the arc extinguishing shield through the guidance of an arc striking plate, when the electric arcs enter the arc extinguishing shield through the guidance of the arc striking plate, a part of electric arcs between the moving contact and the static contact are burnt, at the moment, the moving contact and the static contact are pulled apart by a certain distance, but the electric arcs are burnt, so that the moving contact and the static contact are in a conducting state, a power supply is not actually cut off, the breaking capacity of the automatic change-over switch is influenced, and the damage force to the moving contact and the static contact is extremely strong.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dual supply automatic transfer switch, its is rational in infrastructure, can extinguish with higher speed the electric arc between moving contact and the static contact to be favorable to protecting moving contact and static contact.
In order to achieve the purpose, the technical scheme of the utility model is to design a dual-power automatic transfer switch, which comprises a shell frame, a static contact and a moving contact;
the static contact is fixedly connected with the shell frame through a bracket;
the moving contact is rotatably connected with the shell frame and can rotate between a closing position in contact with the fixed contact and an opening position separated from the fixed contact, and the moving contact comprises a contact end which is positioned above the fixed contact;
the dual-power automatic transfer switch further comprises an arc cutting mechanism, the arc cutting mechanism is used for cutting off an electric arc generated by separation of the moving contact and the fixed contact, the arc cutting mechanism comprises an arc cutting part, the arc cutting part is rotatably connected with the shell frame through a rotating shaft, the arc cutting part comprises a driving plate and an arc cutting plate which are integrally connected, when the moving contact is located at an off position, the driving plate is attached to the top of the contact end, the arc cutting plate extends into a position between the moving contact and the fixed contact, when the moving contact is located at an on position, the driving plate is located above the contact end, and the arc cutting plate is attached to the outer side of the contact end.
Preferably, one end of the arc cutting plate, which is far away from the driving plate, is provided with a cutting edge.
Preferably, the driving plate is a flat plate, and the arc cutting plate is an arc plate.
Preferably, the shaft pin is arranged at the joint of the driving plate and the arc cutting plate.
Preferably, the arc cutting piece is an insulating piece.
The utility model has the advantages and the beneficial effects that: the double-power-supply automatic change-over switch is reasonable in structure, and can accelerate the extinguishing of electric arcs between the moving contact and the static contact, so that the moving contact and the static contact can be protected.
When the moving contact rotates to the disconnection position from the closing position, the moving contact is separated from the static contact, in the process, the head of the moving contact acts on the driving plate of the arc cutting part, the driving plate drives the arc cutting plate to rotate in the clockwise direction until the arc cutting plate extends into the space between the moving contact and the static contact, and therefore the electric arc generated by separation of the moving contact and the static contact is cut off, the electric arc is rapidly extinguished, and the moving contact and the static contact are prevented from being burnt by the electric arc.
When the moving contact rotates from the open position to the closed position, the moving contact is in contact with the fixed contact, and in the process, the head of the moving contact acts on the arc cutting plate of the arc cutting piece, so that the arc cutting plate rotates in the counterclockwise direction and moves out from between the moving contact and the fixed contact, and the moving contact and the fixed contact are prevented from being closed.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic view of the middle cutting arc piece of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The utility model discloses the technical scheme who specifically implements is:
as shown in fig. 1 and 2, a dual power automatic transfer switch includes a housing 1, a fixed contact 2 and a movable contact 3;
the static contact 2 is fixedly connected with the shell frame 1 through a bracket 4;
the moving contact 3 is rotatably connected with the shell frame 1, the moving contact 3 can rotate between a closed position contacting with the static contact 2 and an open position separated from the static contact 2, the moving contact 3 comprises a contact end 31, and the contact end 31 is positioned above the static contact 2;
the dual-power automatic transfer switch further comprises an arc cutting mechanism, the arc cutting mechanism is used for cutting off an electric arc generated by separation of the movable contact 3 and the fixed contact 2, the arc cutting mechanism comprises an arc cutting part 5, the arc cutting part 5 is rotatably connected with the shell frame 1 through a rotating shaft 6, the arc cutting part 5 comprises a drive plate 51 and an arc cutting plate 52 which are integrally connected, when the movable contact 3 is located at an open position, the drive plate 51 is attached to the top of the contact end 31, the arc cutting plate 52 extends into the space between the movable contact 3 and the fixed contact 2, when the movable contact 3 is located at a closed position, the drive plate 51 is located above the contact end 31, and the arc cutting plate 52 is attached to the outer side of the contact end 31.
The end of the arc cutting plate 52 far away from the driving plate 51 is provided with a cutting edge 53.
The driving plate 51 is a flat plate, and the arc cutting plate 52 is an arc plate.
The shaft pin 6 is provided at the junction of the driving plate 51 and the arc cutting plate 52.
The arc cutting member 5 is an insulating member.
The utility model has the advantages and the beneficial effects that: the double-power-supply automatic change-over switch is reasonable in structure, and can accelerate the arc extinguishing between the moving contact 3 and the static contact 2, so that the moving contact 3 and the static contact 2 can be protected.
When the movable contact 3 rotates from the closed position to the open position, the movable contact 3 is separated from the static contact 2, and in the process, the head of the movable contact 3 acts on the driving plate 51 of the arc cutting part 5, so that the driving plate 51 drives the arc cutting plate 52 to rotate clockwise until the arc cutting plate 52 extends into the space between the movable contact 3 and the static contact 2, thereby cutting off the electric arc generated by the separation of the movable contact 3 and the static contact 2, rapidly extinguishing the electric arc, and preventing the movable contact 3 and the static contact 2 from being burnt by the electric arc.
When the movable contact 3 rotates from the open position to the closed position, the movable contact 3 is in contact with the fixed contact 2, and in the process, the head of the movable contact 3 acts on the arc cutting plate 52 of the arc cutting member 5, so that the arc cutting plate 52 rotates counterclockwise and moves out from between the movable contact 3 and the fixed contact 2, and the movable contact 3 and the fixed contact 2 are prevented from being closed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A dual-power automatic transfer switch is characterized by comprising a shell frame, a fixed contact and a movable contact;
the static contact is fixedly connected with the shell frame through a bracket;
the moving contact is rotatably connected with the shell frame and can rotate between a closing position in contact with the fixed contact and an opening position separated from the fixed contact, and the moving contact comprises a contact end which is positioned above the fixed contact;
the dual-power automatic transfer switch further comprises an arc cutting mechanism, the arc cutting mechanism is used for cutting off an electric arc generated by separation of the moving contact and the fixed contact, the arc cutting mechanism comprises an arc cutting part, the arc cutting part is rotatably connected with the shell frame through a rotating shaft, the arc cutting part comprises a driving plate and an arc cutting plate which are integrally connected, when the moving contact is located at an off position, the driving plate is attached to the top of the contact end, the arc cutting plate extends into a position between the moving contact and the fixed contact, when the moving contact is located at an on position, the driving plate is located above the contact end, and the arc cutting plate is attached to the outer side of the contact end.
2. The dual-power automatic transfer switch of claim 1, wherein a cutting edge is disposed at an end of the arc cutting plate away from the driving plate.
3. The dual-power automatic transfer switch of claim 2, wherein the driving plate is a flat plate and the arc-cutting plate is an arc-shaped plate.
4. The dual power automatic transfer switch of claim 3, wherein the shaft is disposed at a connection of the drive plate and the arc cutting plate.
5. The dual power automatic transfer switch of claim 4, wherein the arc cutting member is an insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120637910.6U CN214900324U (en) | 2021-03-30 | 2021-03-30 | Dual-power automatic transfer switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120637910.6U CN214900324U (en) | 2021-03-30 | 2021-03-30 | Dual-power automatic transfer switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214900324U true CN214900324U (en) | 2021-11-26 |
Family
ID=78871801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120637910.6U Active CN214900324U (en) | 2021-03-30 | 2021-03-30 | Dual-power automatic transfer switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214900324U (en) |
-
2021
- 2021-03-30 CN CN202120637910.6U patent/CN214900324U/en active Active
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