CN205264664U - Tight type drop out fuse rises - Google Patents
Tight type drop out fuse rises Download PDFInfo
- Publication number
- CN205264664U CN205264664U CN201620004646.1U CN201620004646U CN205264664U CN 205264664 U CN205264664 U CN 205264664U CN 201620004646 U CN201620004646 U CN 201620004646U CN 205264664 U CN205264664 U CN 205264664U
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- China
- Prior art keywords
- fuse
- moving contact
- cap
- fixed
- contact
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- Expired - Fee Related
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Abstract
The utility model discloses a tight type drop out fuse rises, include insulator, upper bracket, lower carriage, cartridge fuse and release the pressure cap, be fixed with binding post and last static contact on the upper bracket, be fixed with down binding post and lower static contact on the lower carriage, the container is provided with the fuse in managing, levies to lie in: releasing and pressing the cap to set up on last moving contact, release the inside of pressing the cap and offer threaded cavity, the top of going up the moving contact is provided with the boss, is provided with the external screw thread with screw cavity matched with on the boss, it is provided with the electrically conductive gasket of one or more to release to press between cap and the boss. The utility model discloses a drop out fuse, the not hard up in -process of pressing cap extension cartridge fuse of releasing relies on electrically conductive gasket and releases the contact of pressing between cap and the last moving contact, still can guarantee the fuse and release effective electricity of pressing the cap to be connected, cartridge fuse after the extension has obtained firm add between the static contact at last static contact under and has held, makes it and is in " it is tight to rise " state, has avoided droing of cartridge fuse.
Description
Technical field
The utility model relates to a kind of tensioner type fuse switch, in particular, relates in particular to a kind of tensioner type fuse switch that can effectively increase cartridge fuse length.
Background technology
Fuse switch, in running, owing to being subject to the impact of many factors, uses after a period of time, between moving contact and static contact, can produce and become flexible, is oxidized, causes contact resistance to increase, and temperature raises. The on-the-spot HRW type outdoor ac high voltage drop fuse using is just often found such situation; in order to increase the thrust between cartridge fuse and insulating support; in routine use process; user can unscrew the pressure releasing cap of upper moving contact conventionally; increase the length of cartridge fuse with this, thereby increase contact force. After but pressure releasing cap is loosening, between pressure releasing cap and the screw thread of cartridge fuse, there is certain gap, due to the interference of the factors such as wind, pressure releasing cap can produce the relative of certain interval with cartridge fuse and rock, make originally to become very unstable with regard to the contact resistance increasing, therefore go up moving contact service time not length will burn out, need to change.
As investigating the collection infusion water group of object, have more than 50 of device and use the equipment of fuse switch, within 2015, cause more than 20 of the multi-purpose station loss of power accident because of crane fault. Observe according to multi-purpose station technical staff, on average can again occur spark phenomenon at 3 months, need to change.
Summary of the invention
The utility model, in order to overcome the shortcoming of above-mentioned technical problem, provides a kind of tensioner type fuse switch.
Tensioner type fuse switch of the present utility model, comprise insulator, upper bracket, lower carriage, cartridge fuse and pressure releasing cap, upper bracket, lower carriage are fixed on the upper/lower terminal of insulator, on upper bracket, be fixed with upper connecting terminal and the upper static contact of electrical connection, on lower carriage, be fixed with lower connecting terminal and the lower static contact of electrical connection; In container tube, be provided with fuse, the two ends of cartridge fuse outer wall are respectively arranged with lower moving contact and upper moving contact, and upper moving contact, lower moving contact are electrically connected with the two ends of fuse, and lower moving contact contacts with lower static contact; It is characterized in that: pressure releasing cap is arranged on moving contact, the inside of pressure releasing cap offers thread cavity, and the top of upper moving contact is provided with boss, is provided with the external screw thread matching with thread cavity on boss; Between pressure releasing cap and boss, be provided with one or more conductive spacer.
Tensioner type fuse switch of the present utility model, is fixed with connecting rod on described lower moving contact, and connecting rod is articulated with on lower carriage by turning cylinder.
Tensioner type fuse switch of the present utility model, the upper/lower terminal of described fuse is connected with upper moving contact, lower moving contact by the connecting pin of conduction respectively.
Tensioner type fuse switch of the present utility model, is fixed with draw ring on described upper moving contact.
Tensioner type fuse switch of the present utility model, the middle part of described insulator is fixed with the installing plate that whole fuse switch is fixed.
The beneficial effects of the utility model are: fuse switch of the present utility model, by one or more conductive spacer being set on the upper moving contact of cartridge fuse, extend in the process of cartridge fuse by loosening pressure releasing cap, even if contacting with the screw thread on upper moving contact to exist, becomes flexible pressure releasing cap, rely on contacting between conductive spacer and pressure releasing cap and upper moving contact, still can ensure that fuse is electrically connected with the effective of pressure releasing cap. Cartridge fuse after prolongation has obtained firmly accommodating between upper static contact and lower static contact, makes it in " tensioner " state, has avoided coming off of cartridge fuse.
Brief description of the drawings
Fig. 1 is the structural representation of tensioner type fuse switch of the present utility model;
Fig. 2 is the partial sectional view of cartridge fuse in the utility model.
In figure: 1 insulator, 2 upper brackets, 3 lower carriages, 4 cartridge fuses, 5 fuses, 6 upper connecting terminals, 7 upper static contacts, 8 lower connecting terminals, 9 times static contacts, 10 lower moving contacts, moving contact on 11,12 pressure releasing caps, 13 conductive spacers, 14 thread cavities, 15 boss, 16 connecting pins, 17 draw rings, 18 connecting rods, 19 turning cylinders, 20 installing plates.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1, provide the structural representation of tensioner type fuse switch of the present utility model, it is made up of insulator 1, upper bracket 2, lower carriage 3, cartridge fuse 4, upper connecting terminal 6, upper static contact 7, lower connecting terminal 8, lower static contact 9, shown insulator 1 plays electric insulation, position, intermediate portion is fixed with installing plate 20, whole fuse switch can be installed fixing by installing plate 20. Shown upper bracket 2, lower carriage 3 are individually fixed on insulator 1, and upper connecting terminal 6 and upper static contact 7 are all arranged on upper bracket 2, and electrical connection mutually; Lower connecting terminal 8 is fixed on lower carriage 3 with lower static contact 9, also electrical connection mutually.
Shown cartridge fuse 4, between upper static contact 7 and lower static contact 9, as shown in Figure 2, has provided the partial sectional view of cartridge fuse in the utility model, and shown fuse 5 is arranged in the internal cavities of cartridge fuse 4. The two ends in cartridge fuse 4 outsides are respectively arranged with moving contact 11, lower static contact 9, and the upper/lower terminal of fuse 5 is electrically connected with upper moving contact 11, lower static contact 9 by connecting pin 16. Rely on upper static contact 7, the blessing effect of lower static contact 9 to cartridge fuse 4, realize the electric conductivity between upper connecting terminal 6 and lower connecting terminal 8.
Shown in be provided with boss 15 on the upper moving contact 11 of cartridge fuse 4, the inside of pressure releasing cap 12 is thread cavity 14, is provided with the external screw thread matching with thread cavity 14 on the outer surface of boss 15. Between pressure releasing cap 12 and boss 15, be provided with one or more conductive spacer 13. In the long-term process using of fuse switch, can cause becoming flexible between moving contact 11 and upper static contact, for make fuse tube 4 securely " tensioner " between upper static contact 7 and lower static contact 9, need to become flexible pressure releasing cap 12, extend the object of cartridge fuse 4 to reach; For existing fuse, after pressure releasing cap 12 is loosening, the contact area between pressure releasing cap 12 and upper moving contact 11 is reduced, cause resistance to increase. By conductive spacer 13 being set between pressure releasing cap 12 and boss 15, effectively ensure the contact area of pressure releasing cap 12 with upper moving contact 11 supports.
On shown lower moving contact 10, be fixed with connecting rod 18, connecting rod 18 is articulated with on lower carriage 3 by turning cylinder 19, to ensure normally falling of cartridge fuse 4 under overcurrent condition. On shown upper moving contact 10, regulation has draw ring 17.
Claims (5)
1. a tensioner type fuse switch, comprise insulator (1), upper bracket (2), lower carriage (3), cartridge fuse (4) and pressure releasing cap (12), upper bracket, lower carriage are fixed on the upper/lower terminal of insulator, on upper bracket, be fixed with upper connecting terminal (6) and the upper static contact (7) of electrical connection, on lower carriage, be fixed with lower connecting terminal (8) and the lower static contact (9) of electrical connection; In container tube (4), be provided with fuse (5), the two ends of cartridge fuse outer wall are respectively arranged with lower moving contact (10) and upper moving contact (6), and upper moving contact, lower moving contact are electrically connected with the two ends of fuse, and lower moving contact contacts with lower static contact; It is characterized in that: pressure releasing cap is arranged on moving contact, the inside of pressure releasing cap offers thread cavity (15), and the top of upper moving contact is provided with boss (15), is provided with the external screw thread matching with thread cavity on boss; Between pressure releasing cap and boss, be provided with one or more conductive spacer (13).
2. tensioner type fuse switch according to claim 1, is characterized in that: on described lower moving contact (10), be fixed with connecting rod (18), connecting rod is articulated with on lower carriage (3) by turning cylinder (19).
3. tensioner type fuse switch according to claim 1 and 2, is characterized in that: the upper/lower terminal of described fuse (5) is connected with upper moving contact (11), lower moving contact (10) by the connecting pin (16) of conduction respectively.
4. tensioner type fuse switch according to claim 1 and 2, is characterized in that: on described upper moving contact (11), be fixed with draw ring (17).
5. tensioner type fuse switch according to claim 1 and 2, is characterized in that: the middle part of described insulator (1) is fixed with the installing plate (20) that whole fuse switch is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620004646.1U CN205264664U (en) | 2016-01-06 | 2016-01-06 | Tight type drop out fuse rises |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620004646.1U CN205264664U (en) | 2016-01-06 | 2016-01-06 | Tight type drop out fuse rises |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205264664U true CN205264664U (en) | 2016-05-25 |
Family
ID=56006179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620004646.1U Expired - Fee Related CN205264664U (en) | 2016-01-06 | 2016-01-06 | Tight type drop out fuse rises |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205264664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277288A (en) * | 2019-06-26 | 2019-09-24 | 安徽伊法拉电气有限公司 | A kind of fuse insulating shield |
-
2016
- 2016-01-06 CN CN201620004646.1U patent/CN205264664U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277288A (en) * | 2019-06-26 | 2019-09-24 | 安徽伊法拉电气有限公司 | A kind of fuse insulating shield |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160525 Termination date: 20170106 |