CN202796824U - Drop-out fuse moving contact adjusting device - Google Patents
Drop-out fuse moving contact adjusting device Download PDFInfo
- Publication number
- CN202796824U CN202796824U CN 201220409022 CN201220409022U CN202796824U CN 202796824 U CN202796824 U CN 202796824U CN 201220409022 CN201220409022 CN 201220409022 CN 201220409022 U CN201220409022 U CN 201220409022U CN 202796824 U CN202796824 U CN 202796824U
- Authority
- CN
- China
- Prior art keywords
- fuse
- adjusting device
- pressure releasing
- releasing cap
- outer ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a drop-out fuse adjusting device, especially relates to a drop-out fuse moving contact adjusting device. The adjusting device is mainly composed of a fuse tube, a connecting sleeve loop, a fixing outer ring and a pressure releasing cap. The connecting sleeve loop with internal and external threads is arranged on the end part of the fuse tube. The pressure releasing cap is connected on the threads on the fuse tube. The fixing outer ring is additionally arranged on the outer side of the pressure releasing cap. The fixing outer ring is pressing on the pressure releasing cap and screwed on the connecting sleeve loop. The adjusting device can adjust the length of the fuse tube within a certain range. When the contact between a moving contact and a static contact is loosened, the adjusting device can properly adjust the fuse tube and make the length of the fuse tube increased. In this way, a firm reliable connection between the moving contact and the static contact is consistently ensured. Contact heating and burning phenomena generated by the loosening connection are then prevented. The operation life of the fuse is prolonged. Less materials are consumed. The failure rate of an electric power system is lowered.
Description
Technical field
The utility model relates to a kind of fuse switch adjusting device, particularly a kind of fuse switch moving contact adjusting device.
Background technology
Fuse switch owing to be subject to the impact of many factors, after use a period of time, can produce between moving contact and the fixed contact and become flexible in running, causes contact resistance to increase, the temperature rising.The on-the-spot HRW type outdoor ac high voltage drop fuse that uses is just often found such situation; in order to increase the thrust between cartridge fuse and the insulating support; in the routine use process; the user can unscrew the pressure releasing cap of upper moving contact usually; increase the length of fuse with this, thereby increase contact force.After but pressure releasing cap is loosening, certain gap is arranged between the screw thread of pressure releasing cap and cartridge fuse, because the interference of the factors such as wind, pressure releasing cap can produce the relative of certain interval with cartridge fuse and rock, so that originally became very unstable with regard to the contact resistance that increases, therefore upper moving contact service time not length will burn out, need to change.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of fuse switch moving contact adjusting device that can reliably connect is provided, and is implemented in the reliable and stable connection in the certain-length adjustable range.
Its technical scheme is: mainly by cartridge fuse, connect lasso, fixedly outer ring and pressure releasing cap form, equal threaded connection lasso inside and outside one of the end of cartridge fuse installation, pressure releasing cap are connected on the screw thread above the cartridge fuse; The outside of described pressure releasing cap increases a fixedly outer ring, and fixedly the outer ring is pressed on the pressure releasing cap, and is tightened on the connection lasso.
The beneficial effects of the utility model are: realized cartridge fuse length adjustment within the specific limits, when contact is loosening between the dynamic/static contact, cartridge fuse suitably can be regulated, increase its length, thereby having guaranteed has solid and reliable connection all the time between the dynamic/static contact, has avoided the contact heating burnout phenomenon that causes because of loosening, the service life that has prolonged fuse, save material consumption, reduced the failure rate of electric power system.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Among the upper figure: cartridge fuse 1, connect lasso 2, fixedly outer ring 3 and pressure releasing cap 4.
Embodiment
By reference to the accompanying drawings 1, the utility model will be further described:
The utility model mainly by cartridge fuse 1, connect lasso 2, fixedly outer ring 3 and pressure releasing cap 4 form, equal threaded connection lasso 2 inside and outside one of the end of cartridge fuse 1 installation, pressure releasing cap 4 are connected on the screw thread above the cartridge fuse; The outside of described pressure releasing cap 4 increases a fixedly outer ring 3, and fixedly outer ring 3 is pressed on the pressure releasing cap 4, and is tightened on the connection lasso 2, and no matter pressure releasing cap 4 is parked in any one position, and fixedly outer ring 3 can both fixedly secure pressure releasing cap 4 on cartridge fuse 1; After fuse closes like this, just can realize reliably connecting closely.In use, if dynamic/static contact is loosening to some extent after operation a period of time, just can length as required regulate, so realized that the length of fuse is adjustable, prolonged useful life, increased the reliability of power system operation.
Claims (1)
1. fuse switch moving contact adjusting device, it is characterized in that: mainly by cartridge fuse (1), connect lasso (2), fixedly outer ring (3) and pressure releasing cap (4) form, equal threaded connection lasso (2) inside and outside installing one in the end of cartridge fuse (1), pressure releasing cap (4) are connected on the screw thread above the cartridge fuse; The outside of described pressure releasing cap (4) increases by one fixedly outer ring (3), and fixedly outer ring (3) are pressed on the pressure releasing cap (4), and is tightened on the connection lasso (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220409022 CN202796824U (en) | 2012-08-17 | 2012-08-17 | Drop-out fuse moving contact adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220409022 CN202796824U (en) | 2012-08-17 | 2012-08-17 | Drop-out fuse moving contact adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796824U true CN202796824U (en) | 2013-03-13 |
Family
ID=47824028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220409022 Expired - Fee Related CN202796824U (en) | 2012-08-17 | 2012-08-17 | Drop-out fuse moving contact adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202796824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118753A (en) * | 2015-07-23 | 2015-12-02 | 国家电网公司 | Drop fuse bar with adjustable length |
| CN109192636A (en) * | 2018-10-26 | 2019-01-11 | 东莞市福实五金有限公司 | Fuse the preparation method of core in a kind of novel early warning fuse and fuse |
-
2012
- 2012-08-17 CN CN 201220409022 patent/CN202796824U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118753A (en) * | 2015-07-23 | 2015-12-02 | 国家电网公司 | Drop fuse bar with adjustable length |
| CN109192636A (en) * | 2018-10-26 | 2019-01-11 | 东莞市福实五金有限公司 | Fuse the preparation method of core in a kind of novel early warning fuse and fuse |
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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: 20130313 Termination date: 20130817 |