CN214956591U - Bipolar electric isolating switch - Google Patents
Bipolar electric isolating switch Download PDFInfo
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- CN214956591U CN214956591U CN202120046399.2U CN202120046399U CN214956591U CN 214956591 U CN214956591 U CN 214956591U CN 202120046399 U CN202120046399 U CN 202120046399U CN 214956591 U CN214956591 U CN 214956591U
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Abstract
The utility model provides a bipolar electric isolating switch, which belongs to the technical field of rail train power supply, comprising an isolating switch body, wherein the isolating switch body comprises two groups of moving and static contacts, the moving and static contacts comprise an upper static contact and a lower static contact which are arranged on a base, a moving contact is arranged between the upper static contact and the lower static contact, the moving contact comprises side plates and contact plates positioned between the side plates, the contact plates comprise a first contact plate, a second contact plate, a third contact plate and a fourth contact plate, spring pieces are arranged on the first contact plate and the fourth contact plate, and the first contact plate and the fourth contact plate are respectively combined with the two side plates; the second contact plate is also provided with a spring piece, the second contact plate and the third contact plate are combined, the moving contact is connected with the motor through the transmission assembly, and the motor drives the moving contact to be in contact with or separated from the upper static contact. The utility model has the advantages of simple structure, long service life, strong conductive ability of the contact, difficult deformation, safety and reliability.
Description
Technical Field
The utility model belongs to the technical field of rail train power supply, especially, relate to a bipolar electronic isolator.
Background
An isolating switch is a switching device mainly used for isolating a power supply, switching operation and connecting and disconnecting a small current circuit. When the isolating switch is in the separated position, the contacts have insulation distance meeting the specified requirements and obvious disconnection marks; when the device is in the closed position, the device can bear the current under the condition of a normal loop and the current under the abnormal condition within the specified time; generally used as a high-voltage isolating switch, the working principle and the structure of the high-voltage isolating switch are simpler, but the high-voltage isolating switch has high requirement on working reliability due to large using amount.
In an electrical power system, the disconnector must be able to withstand the maximum short-circuit current of the system for a short time. For the disconnecting switch in the form of the rotary disconnecting switch, besides the problems of weak contact conductivity, easy deformation of a contact plate and short service life, when a large current passes through the disconnecting switch, the contact of the disconnecting switch can be repelled to lose efficacy, and the disconnecting switch can also rotate reversely by the strong electrodynamic force generated by the large current, so that the disconnecting switch is forced to be disconnected, and accidents are caused.
Disclosure of Invention
The to-be-solved problem of the utility model is to provide a simple structure, life cycle is long, and contact conductivity is strong, is difficult for taking place deformation, safe and reliable's bipolar electronic isolator.
In order to solve the technical problem, the utility model discloses a technical scheme is: a bipolar electric isolating switch comprises an isolating switch body, wherein the isolating switch body comprises two groups of moving and static contacts which are arranged in parallel, the moving and static contacts comprise an upper static contact and a lower static contact which are arranged on a base, a moving contact is arranged between the upper static contact and the lower static contact, the fixed end of the moving contact is hinged on the vertical plate of the lower static contact, the free end of the moving contact is matched with the vertical plate of the upper static contact, the moving contact comprises two side plates and four contact plates which are positioned between the two side plates, the four contact plates comprise a first contact plate, a second contact plate, a third contact plate and a fourth contact plate, the first contact plate and the fourth contact plate are both provided with spring pieces, the first contact plate and the fourth contact plate are respectively combined with the two side plates, and the first contact plate spring piece is positioned between the first contact plate and the side plates, the fourth contact plate spring piece is positioned between the fourth contact plate and the side plate; the isolating switch is characterized in that the second contact plate is also provided with a spring piece, the second contact plate and the third contact plate are combined, the second contact plate spring piece is positioned between the second contact plate and the third contact plate, one side of the isolating switch body is provided with a motor, the moving contact is connected with the motor through a transmission assembly, and the motor drives the moving contact to be in contact with or separated from the upper static contact.
The transmission assembly comprises a main shaft connected with the motor, the main shaft drives the moving contact to move through the control arm, a cam group is arranged on the main shaft, and the cam group and the quick-acting switch are correspondingly arranged.
And the motor is provided with a motor auxiliary contact.
And the upper fixed contact and the lower fixed contact are arranged on the base through insulators.
The side plate is an aluminum alloy side plate, and the contact plate is a silver-plated contact plate.
Eight spring pieces are arranged on the first contact plate, the second contact plate and the fourth contact plate.
Due to the adoption of the technical scheme, the utility model has the advantages that the whole structure is simple, and isolator is loaded two sets of sound contact current-carrying capacity big, can control two sets of return circuits, uses motor drive, and the life cycle is long. The upper static contact and the lower static contact are installed on the base through the insulator, the moving contact is installed on the vertical plate of the lower static contact, the surface of a contact plate of the moving contact is plated with silver to increase the conductive capacity of the contact, and spring pieces are arranged between the first contact plate and the side plate, between the second contact plate and the third contact plate, and between the fourth contact plate and the side plate to increase the pressing force of the contact plates and prevent the contact plates from deforming. The motor is connected with the main shaft, drives the moving contact to move, namely drives the isolating switch to be switched on and switched off, and when the isolating switch is switched on and switched off, the cam group triggers different quick-acting switches to be switched on and switched off, outputs different electrical signals and is connected into the whole system, so that the system is safe and reliable.
The utility model has the advantages that: the contact has the advantages of simple structure, long service life, strong conductivity of the contact, difficult deformation, safety and reliability.
Drawings
The advantages and mode of realisation of the invention will become more apparent hereinafter by describing in detail the invention with reference to the attached drawings, wherein the content shown in the drawings is only for explaining the invention, without constituting any limitation to the meaning of the invention, in which:
FIG. 1 is a schematic structural diagram of the present invention
FIG. 2 is a schematic structural diagram of the moving contact of the present invention
In the figure:
1. base 2, upper static contact 3 and lower static contact
4. Moving contact 5, side plate 6, first contact plate
7. Second contact plate 8, third contact plate 9, fourth contact plate
10. Spring piece 11, motor 12 and main shaft
13. Quick-acting switch 14 and motor auxiliary contact
Detailed Description
As shown in fig. 1 and fig. 2, the present invention relates to a bipolar electric isolating switch, which comprises an isolating switch body, wherein the isolating switch body comprises two sets of moving and static contacts arranged side by side, the moving and static contacts comprise an upper static contact 2 and a lower static contact 3 mounted on a base 1, a moving contact 4 is arranged between the upper static contact 2 and the lower static contact 3, a fixed end of the moving contact 4 is hinged on a vertical plate of the lower static contact 3, a free end of the moving contact 4 is arranged to match with the vertical plate of the upper static contact 2, the moving contact 4 comprises two side plates 5 and four contact plates located between the two side plates 5, the four contact plates comprise a first contact plate 6, a second contact plate 7, a third contact plate 8 and a fourth contact plate 9, the first contact plate 6 and the fourth contact plate 9 are both provided with spring pieces 10, the first contact plate 6 and the fourth contact plate 9 are respectively combined with the two side plates 5, the first contact plate 6 is positioned between the first contact plate 6 and the side plate 5, and the fourth contact plate 9 is positioned between the fourth contact plate 9 and the side plate 5; the second contact plate 7 is also provided with a spring strip 10, the second contact plate 7 and the third contact plate 8 are combined, the second contact plate 7 is positioned between the second contact plate 7 and the third contact plate 8, one side of the isolating switch body is provided with a motor 11, the moving contact 4 is connected with the motor 11 through a transmission component, the motor 11 drives the moving contact 4 to be contacted with or separated from the upper static contact 2, the transmission component comprises a main shaft 12 connected with the motor 11, the main shaft 12 drives the moving contact 4 to move through a control arm, the main shaft 12 is provided with a cam group, the cam group is arranged corresponding to the quick-acting switch 13, the motor 11 is provided with a motor auxiliary contact 14, the upper static contact 2 and the lower static contact 3 are installed on the base 1 through insulators, the side plate 5 is an aluminum alloy side plate, the contact plate is a silver-plated contact plate, and the first contact plate 6, the second contact plate 7 and the fourth contact plate 9 are all provided with eight spring pieces 10.
The utility model has the advantages that the whole structure is simple, and isolator carries two sets of sound contact current-carrying capacity big, can control two sets of return circuits, uses motor 11 drive, and the life cycle is long. The upper and lower static contacts are mounted on the base 1 through insulators, the moving contact 4 is mounted on the vertical plate of the lower static contact 3, the contact plate surface of the moving contact 4 is plated with silver to increase the conductive capacity of the contact, and the spring pieces 10 are arranged between the first contact plate 6 and the side plate 5, between the second contact plate 7 and the third contact plate 8, and between the fourth contact plate 9 and the side plate 5 to increase the contact plate pressing force and prevent the contact plates from deforming. The motor 11 is connected with the main shaft 12, drives the moving contact 4 to move, namely drives the isolating switch to be switched on and switched off, and when the isolating switch is switched on and switched off, the cam group triggers the different quick-acting switches 13 to be switched on and switched off, outputs different electrical signals and is connected to the whole system, so that the safety and the reliability are realized.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (6)
1. A bipolar electrical disconnect switch, comprising: comprises an isolating switch body, the isolating switch body comprises two groups of moving and static contacts which are arranged in parallel, the moving and static contacts comprise an upper static contact and a lower static contact which are arranged on the base, a moving contact is arranged between the upper static contact and the lower static contact, the fixed end of the moving contact is hinged on the vertical plate of the lower static contact, the free end of the moving contact is matched with the vertical plate of the upper static contact, the moving contact comprises two side plates and four contact plates positioned between the two side plates, the four contact plates comprise a first contact plate, a second contact plate, a third contact plate and a fourth contact plate, spring pieces are arranged on the first contact plate and the fourth contact plate, the first contact plate and the fourth contact plate are respectively combined with the two side plates, the first contact plate spring piece is positioned between the first contact plate and the side plates, and the fourth contact plate spring piece is positioned between the fourth contact plate and the side plates; the isolating switch is characterized in that the second contact plate is also provided with a spring piece, the second contact plate and the third contact plate are combined, the second contact plate spring piece is positioned between the second contact plate and the third contact plate, one side of the isolating switch body is provided with a motor, the moving contact is connected with the motor through a transmission assembly, and the motor drives the moving contact to be in contact with or separated from the upper static contact.
2. The bipolar electrical disconnect switch of claim 1, wherein: the transmission assembly comprises a main shaft connected with the motor, the main shaft drives the moving contact to move through the control arm, a cam group is arranged on the main shaft, and the cam group and the quick-acting switch are correspondingly arranged.
3. The bipolar electrical disconnect switch of claim 1, wherein: and the motor is provided with a motor auxiliary contact.
4. The bipolar electrical disconnect switch of claim 1, wherein: and the upper fixed contact and the lower fixed contact are arranged on the base through insulators.
5. The bipolar electrical disconnect switch of claim 1, wherein: the side plate is an aluminum alloy side plate, and the contact plate is a silver-plated contact plate.
6. The bipolar electrical disconnect switch of claim 1, wherein: eight spring pieces are arranged on the first contact plate, the second contact plate and the fourth contact plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120046399.2U CN214956591U (en) | 2021-01-08 | 2021-01-08 | Bipolar electric isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120046399.2U CN214956591U (en) | 2021-01-08 | 2021-01-08 | Bipolar electric isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214956591U true CN214956591U (en) | 2021-11-30 |
Family
ID=79122335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120046399.2U Active CN214956591U (en) | 2021-01-08 | 2021-01-08 | Bipolar electric isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214956591U (en) |
-
2021
- 2021-01-08 CN CN202120046399.2U patent/CN214956591U/en active Active
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