CN201478182U - Moving and static contacts connecting structure of indoor high-voltage earthing switch - Google Patents
Moving and static contacts connecting structure of indoor high-voltage earthing switch Download PDFInfo
- Publication number
- CN201478182U CN201478182U CN200920190968XU CN200920190968U CN201478182U CN 201478182 U CN201478182 U CN 201478182U CN 200920190968X U CN200920190968X U CN 200920190968XU CN 200920190968 U CN200920190968 U CN 200920190968U CN 201478182 U CN201478182 U CN 201478182U
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- contact
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- static
- contact piece
- static contact
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Abstract
The utility model discloses a moving and static contacts connecting structure of an indoor high-voltage earthing switch, which comprises a moving contact piece, a static contact piece and two belleille spring pieces, wherein the static contact piece is fixed on a static contact seat; the moving contact piece is a prolate contact piece which can swing towards the static contact piece; the static contact piece is two flat and short contact pieces which are arranged parallelly and provided with a gap for receiving the moving contact piece; and the two belleille spring pieces are respectively arranged on the outsides of the two static contact pieces. When in connection, for the short static contact piece and the outside force imposed by the belleille spring pieces after being fixed by a screw, the contact is tight and the structure is stable when the moving contact piece is inserted into the two static contact pieces; even large current passes through the contact surface, knife edges can better contact with each other all the time to lead the contact area of the knife edges to keep the original state all the time, thus avoiding the phenomenon of contact area heating and fusing caused by reduced contact area and increased resistance.
Description
[technical field]
The utility model belongs to a kind of indoor hv earthing switch, relates in particular to the draw bail of dynamic/static contact in the earthed switch.
[background technology]
Existing dynamic and static structure of contact terminal, moving contact are two prolate shapes and the contact chip that be arranged in parallel, have the gap between two contact chips, and there is a horizontal fastening screw at the middle part, make two contact chips keep the certain clearance distances; The outside at two contact chips also respectively is provided with a slice disc spring film, and disc spring film is also locked by described fastening screw, utilizes disc spring film to apply a thrust to contact chip.Fixed contact is the flat brachmorphy contact chip of a slice.During connection, two contact chips of moving contact relatively rotate to quiet contact chip under transmission device drives, and cut in the tip clearance of two contact chips of moving contact until the contact chip of fixed contact, realize electrically connecting.This moving, the draw bail of fixed contact in actual applications, there is following problems: because the fastening screw of fastening disc spring film distance is moving, the contact-making surface of fixed contact is too far away, run into when big electric current is arranged by contact-making surface, two contact chips of moving contact are easy to be pushed open by electric power, the contact-making surface area is reduced, resistance increases, thereby cause the contact-making surface heating, moreover, because the characteristic that conductor exists resistance to increase with temperature, the contact-making surface heating will further produce heat, enter vicious circle, can dissolve away moving contact when serious, cause and open circuit between the dynamic/static contact and lead to a disaster.
[summary of the invention]
For overcoming the problems referred to above that prior art exists, the utility model aims to provide a kind of indoor hv earthing switch dynamic/static contact draw bail, even the contact-making surface of the dynamic/static contact of this draw bail has big electric current to pass through, it is good also to remain contact, therefore contact-making surface can not produce the heating phenomenon, thereby help guaranteeing electric property, avoid accident to take place.
For solving the problems of the technologies described above, the utility model has adopted following technical scheme: this indoor hv earthing switch dynamic/static contact draw bail, comprise moving contacting plate, quiet contact chip and two disc spring films, quiet contact chip is fixed on the stationary contact headstock, it is characterized in that: moving contacting plate is that a slice can be towards the prolate shape contact chip of quiet contact chip swing; Quiet contact chip is that two flat brachmorphies be arranged, have the contact chip of admitting the moving contacting plate gap in parallel, and two disc spring films are separately positioned on the outside of two quiet contact chips.
During concrete enforcement, described two quiet contact chips and stationary contact headstock are single piece.
Beneficial effect: compared with prior art, the utility model makes two contact chips of original moving contact into a slice contact chip, make original fixed contact a slice contact chip into two contact chips, and with original screw rod fixedly the structure of disc spring film move on the quiet contact chip.During connection, because quiet contact chip is brachmorphy, add the externally applied forces effect of the fixing back of disc spring film screw rod institute, after moving contacting plate inserts two quiet contact chips, contact is tight, Stability Analysis of Structures, even run into when big electric current is arranged by contact-making surface, can not occur the minimizing of contact-making surface area, resistance increase yet, thereby cause the phenomenon of contact-making surface heating.Improvement is simple, effect is obvious.
[description of drawings]
Fig. 1 is the perspective view of an embodiment of the utility model.
Among the figure: stationary contact headstock 1, fixing hole 11, quiet contact chip 12, contact-making surface 13, standing screw 2, left disc spring film 3, right disc spring film 4, moving contacting plate 5, moving contacting plate upper end 51.
[embodiment]
Referring to Fig. 1.Quiet contact chip 12 is a single piece with stationary contact headstock 1, by fixing hole 11 location.Quiet contact chip 12 is the parallel plate of two flat brachmorphies, and standing screw 2 is arranged near the base portion place, and left disc spring film 3, right disc spring film 4 lay respectively at the outside of two quiet contact chips 12, and is fastening by standing screw 2 tractions.Have the gap between two quiet contact chip 12 madial walls, to admit the moving contacting plate upper end 51 of moving contacting plate 5, the contact-making surface 13 of dynamic and static contact is the concaveconvex structure contact.
Moving contacting plate 5 can be under transmission device drives, can quiet relatively contact chip 12 swing, realize break-make (among Fig. 1 shown in the arrow).
Claims (2)
1. indoor hv earthing switch dynamic/static contact draw bail, comprise moving contacting plate (5), quiet contact chip (12) and two disc spring films (3,4), quiet contact chip (12) is fixed on the stationary contact headstock (1), it is characterized in that: moving contacting plate (5) can be towards the prolate shape contact chip of quiet contact chip (12) swing for a slice; Quiet contact chip (12) is the contact chip that two flat brachmorphies be arranged, had admittance moving contacting plate (5) gap in parallel, and two disc spring films (3,4) are separately positioned on the outside of two quiet contact chips (12).
2. a kind of indoor hv earthing switch dynamic/static contact draw bail as claimed in claim 1 is characterized in that: described two quiet contact chips (12) are single piece with stationary contact headstock (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920190968XU CN201478182U (en) | 2009-08-06 | 2009-08-06 | Moving and static contacts connecting structure of indoor high-voltage earthing switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920190968XU CN201478182U (en) | 2009-08-06 | 2009-08-06 | Moving and static contacts connecting structure of indoor high-voltage earthing switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478182U true CN201478182U (en) | 2010-05-19 |
Family
ID=42414442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920190968XU Expired - Fee Related CN201478182U (en) | 2009-08-06 | 2009-08-06 | Moving and static contacts connecting structure of indoor high-voltage earthing switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201478182U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832072A (en) * | 2012-08-29 | 2012-12-19 | 广西和谐电力科技有限公司 | Outdoor AC high-voltage isolating switch |
| CN106252144A (en) * | 2016-09-20 | 2016-12-21 | 安徽机电职业技术学院 | The dynamic/static contact draw bail of electric cleaner high voltage ground switch |
| CN112127701A (en) * | 2020-09-21 | 2020-12-25 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Safety isolation device for high-altitude electrified equipment |
-
2009
- 2009-08-06 CN CN200920190968XU patent/CN201478182U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832072A (en) * | 2012-08-29 | 2012-12-19 | 广西和谐电力科技有限公司 | Outdoor AC high-voltage isolating switch |
| CN106252144A (en) * | 2016-09-20 | 2016-12-21 | 安徽机电职业技术学院 | The dynamic/static contact draw bail of electric cleaner high voltage ground switch |
| CN112127701A (en) * | 2020-09-21 | 2020-12-25 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Safety isolation device for high-altitude electrified equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20120806 |