CN201345301Y - Fixed contact of heavy-current knife switch - Google Patents
Fixed contact of heavy-current knife switch Download PDFInfo
- Publication number
- CN201345301Y CN201345301Y CNU2009200382871U CN200920038287U CN201345301Y CN 201345301 Y CN201345301 Y CN 201345301Y CN U2009200382871 U CNU2009200382871 U CN U2009200382871U CN 200920038287 U CN200920038287 U CN 200920038287U CN 201345301 Y CN201345301 Y CN 201345301Y
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- China
- Prior art keywords
- contact
- knife
- heavy
- pile head
- fixed contact
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- Expired - Fee Related
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Abstract
The utility model discloses a fixed contact of heavy-current knife switch, comprising a pile head, a contact and a connector, wherein the contact is two inverted U-shaped copper sheets which are respectively fastened to the two sides of the pile head; the connector is connected to the outer side of the contact on one side; and an insulation washer is fixed on the surface of the pile head between the two contacts. When closing the switch, one end of the knife is inserted between the contacts such that the two sides of the knife are clamped by the contacts; and the other surface is separated from the upper surface of the copper pile by the insulating washer; thus, the problems of easy generation of arc discharge and sparkle between the knife and the upper surface of the pile head when heavy current flows through the very narrow gap between the knife and the surface of the pile head are solved. Furthermore, the knife can not be burnt down due to heat generated from trembling in case of strenuous vibration. The fixed contact of heavy-current knife switch of the utility model is capable of eliminating the potential safety hazard in electrical equipment and improving the reliability of the electrical equipment.
Description
Technical field
The utility model belongs to the electric equipment field, relates to a kind of fixed contact of big electric current knife switch.
Background technology
The fixed contact of the conventional big electric current knife switch of tradition of producing and selling and using on the market, its pile crown and contact are electric conducting material, and pile crown does not have higher electrochemical treatments requirement, and electric conductivity is good not as contact.During combined floodgate, an end of plug-in strip inserts between the contact of fixed contact, and two sides are clamped by contact, and the upper surface of another side and pile crown has very narrow gap.If use or adjust improper, big electric current by the time, arc discharge can take place in plug-in strip and pile crown upper surface, produce electric spark, especially under the state of strenuous vibration comparatively, plug-in strip also can be because of shake, plug-in strip is contacted with the pile crown upper surface, pile crown can be burnt when serious.The big electric current knife switch of this structure will become the unsafe hidden danger in the electric equipment if be installed on the great electric equipment, reduce the reliability of electric equipment.
Summary of the invention
The purpose of this utility model is to improve the fixed contact of traditional big electric current knife switch, and the hidden danger of arc discharge can take place for plug-in strip and pile crown upper surface in the elimination original structure, and a kind of safe and reliable big electric current knife switch fixed contact is provided.
In order to achieve the above object, the technical solution of the utility model is, a kind of fixed contact of big electric current knife switch, comprise pile crown, contact and junction block, contact is the conducting strip of two inverted Us and two sides that are fastened on pile crown respectively, the outside of one side contact also is connected with junction block, it is characterized in that: an insulation cushion is fixed on the pile crown surface between two contacts;
Advantage of the present utility model is: the big electric current knife switch fixed contact after the improvement, because having filled out an insulation on pile crown fills out, when closing a floodgate energising, the plug-in strip two sides are clamped by contact, the upper surface that another side is insulated pad and copper stake separates, also the phenomenon that does not just exist plug-in strip and copper stake upper surface arc discharge or heating to burn out.The hidden danger in the electric equipment has been eliminated in this improvement, has improved the reliability of electric equipment.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done explanation in further detail.
Fig. 1 is the utility model front elevational schematic;
Fig. 2 is the B-B cutaway view of the utility model Fig. 1;
Fig. 3 is the schematic perspective view of the utility model when closing a floodgate;
Embodiment
This practical technique embodiment is:
Be illustrated in figure 1 as the utility model front elevational schematic, Figure 2 shows that the B-B cutaway view of Fig. 1; A kind of fixed contact of big electric current knife switch comprises pile crown 1, contact 2,2 ' and junction block 4, contact 2,2 ' be the conducting strips that two inverted Us are handled through surface electrochemistry, and be fastened on two sides of pile crown 1 respectively, a side contact 2 ' the outside also be connected with junction block 4; Two contacts 2,2 ' pile crown 1 surface fix an insulation cushion 3
Be illustrated in figure 3 as the schematic perspective view of the utility model when closing a floodgate; During combined floodgate, an end of plug-in strip insertion contact 2,2 ' between, two sides are by contact 2,2 ' clamping, and the upper surface that another surface is insulated pad 3 and copper stake separates, and like this, does not also just have plug-in strip and pile crown upper surface arc discharge or heating burnout phenomenon.
Claims (1)
1, a kind of fixed contact of big electric current knife switch, comprise pile crown (1), contact (2,2 ') and junction block (4), contact (2,2 ') be the conducting strip of two inverted Us and two sides that are fastened on pile crown (1) respectively, the outside of one side contact (2 ') also is connected with junction block (4), it is characterized in that: an insulation cushion (3) is fixed on pile crown (1) surface between two contacts (2,2 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200382871U CN201345301Y (en) | 2009-01-11 | 2009-01-11 | Fixed contact of heavy-current knife switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200382871U CN201345301Y (en) | 2009-01-11 | 2009-01-11 | Fixed contact of heavy-current knife switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201345301Y true CN201345301Y (en) | 2009-11-11 |
Family
ID=41276887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200382871U Expired - Fee Related CN201345301Y (en) | 2009-01-11 | 2009-01-11 | Fixed contact of heavy-current knife switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201345301Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103069521A (en) * | 2010-11-09 | 2013-04-24 | 矢崎总业株式会社 | Power source circuit cutoff device |
| CN106165044A (en) * | 2014-04-09 | 2016-11-23 | Abb瑞士股份有限公司 | Knife switch assembly, electrical power distribution switches cabinet and the method being used for preventing electric discharge |
-
2009
- 2009-01-11 CN CNU2009200382871U patent/CN201345301Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103069521A (en) * | 2010-11-09 | 2013-04-24 | 矢崎总业株式会社 | Power source circuit cutoff device |
| CN106165044A (en) * | 2014-04-09 | 2016-11-23 | Abb瑞士股份有限公司 | Knife switch assembly, electrical power distribution switches cabinet and the method being used for preventing electric discharge |
| US9691561B2 (en) | 2014-04-09 | 2017-06-27 | Abb Schweiz Ag | Knife switch assembly, an electric power distribution switchgear and a method for preventing electric discharges |
| CN106165044B (en) * | 2014-04-09 | 2018-01-02 | Abb瑞士股份有限公司 | Knife switch component, electrical power distribution switches cabinet and the method for preventing electric discharge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 213000 Jiangsu city of Changzhou province Wujin Fenglin District of Wujin national hi tech Industrial Development Zone, Road No. 199 Patentee after: Xinyu Bombardier Traction System Co Ltd Address before: 213011, 18, Qian Jia Industrial Zone, remote view Town, Wujin District, Jiangsu, Changzhou Patentee before: Bombardier CPC Propulsion System Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20180111 |