CN202996669U - Low-voltage fuse type disconnecting switch - Google Patents
Low-voltage fuse type disconnecting switch Download PDFInfo
- Publication number
- CN202996669U CN202996669U CN 201220675368 CN201220675368U CN202996669U CN 202996669 U CN202996669 U CN 202996669U CN 201220675368 CN201220675368 CN 201220675368 CN 201220675368 U CN201220675368 U CN 201220675368U CN 202996669 U CN202996669 U CN 202996669U
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- CN
- China
- Prior art keywords
- moving contact
- contact
- disconnecting switch
- fixed
- low
- 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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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a low-voltage fuse type disconnecting switch. The low-voltage fuse type disconnecting switch comprises a baseboard, two insulating columns which are fixed on the baseboard, a moving contact and a stationary contact. The stationary contact is fixed on one of the insulating columns, the moving contact is fixed on the other insulating column through a moving contact base, the moving contact is provided with a fuse link, and two ends of the moving contact are connected with the moving contact base and the stationary contact separately through a U-shaped splint. According to the low-voltage fuse type disconnecting switch of the utility model, by connecting two ends of the moving contact with the moving contact base and the stationary contact separately through the U-shaped splint and further arranging a pull ring and a detachable sleeve on the moving contact and arranging an arc suppression sheet at the connection position between the stationary contact and the moving contact, so the generation of the arc when the disconnecting switch is switched off is reduced, the failure rate of the disconnecting switch can be reduced, and the quality of the whole disconnecting switch is improved. Moreover, the moving contact can be detached and installed more conveniently and rapidly, so the operation of the disconnecting switch is facilitated.
Description
Technical field
The utility model relates to electric parts, particularly a kind of low-pressure fusing disconnecting switch.
Background technology
Low-pressure fusing disconnecting switch is widely used in the outlet of bench type step down side due to low cost, advantage stable, easy to maintenance.Common low-pressure fusing disconnecting switch comprises base, is arranged on fixed contact and moving contact on base, and fuse link, be hinged with blade on described moving contact, the other end of blade when switch is closed and fixed contact join, fuse link is fixed between moving contact and connecting plate; Fixed contact and moving contact and connecting plate are arranged on insulated column respectively.When fusing occurs fuse link, need the electric power personnel in time moving contact to be disassembled the replacing fuse link, then install.Due to dismounting with to install be generally to adopt the pull bar operation, therefore, disassembly and assembly structure not only requirement is wanted closely with the combination of movable contact block and fixed contact, and requires disassembly and assembly structure will facilitate pull bar to operate.And, above-mentioned isolating switch is due to switch when closed, usually that contact area is very little, or even some contact or line contact, cause contact resistance very high, when working long hours, the overheated contact that burns out of the face that easily comes in contact, exist certain potential safety hazard and useful life short, the problem that maintenance cost is high.
The utility model content
The problem that the utility model solves is to provide a kind of isolating switch, solves the problems such as existing isolating switch disassembly and assembly structure not rationally, more easily breaks down.
For addressing the above problem, the technical solution adopted in the utility model is:
A kind of low-pressure fusing disconnecting switch, comprise base plate, be fixed on two insulated columns, moving contact and fixed contacts on described base plate, described fixed contact is fixed therein on an insulated column, described moving contact is fixed on another insulated column by movable contact block, described moving contact is provided with fuse link, and described moving contact two ends are connected with fixed contact with movable contact block respectively by U-shaped clamping plate.
Further, also be provided with muffler, described muffler is comprised of the moving muffler that is arranged on moving contact and the quiet muffler that is arranged on fixed contact.
Further, be provided with draw ring and dismounting cover on described moving contact.
Further, the end that described moving contact is connected with movable contact block also is provided with rotating shaft, and is mounted on the hanging seat on movable contact block.
Compared with prior art, the advantage of technical solutions of the utility model is:
By moving contact two ends are connected with fixed contact with movable contact block respectively by U-shaped clamping plate, and draw ring further is set on moving contact and dismantles cover, junction at fixed contact and moving contact arranges muffler, not only make moving contact be connected with the face that the is connected to contact of fixed contact, reduce contact resistance both; And the generation that electric arc when reducing the isolating switch disconnection is set of muffler, the useful life of having improved isolating switch; The setting of draw ring and dismounting cover makes the dismounting of isolating switch more convenient, rapid, thereby has improved the quality of whole isolating switch.
Description of drawings
Fig. 1 is the utility model specific embodiment schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
Fig. 1 is the utility model specific embodiment schematic diagram.As shown in Figure 1, a kind of low-pressure fusing disconnecting switch, comprise base plate 1, be fixed on two insulated columns 21 and 22, moving contact 3 and fixed contact 4 on described base plate, described fixed contact 4 is fixed therein on an insulated column 21, described moving contact 3 is fixed on another insulated column 22 by movable contact block 5, described moving contact 3 is provided with fuse link 31, is connected with fixed contact with movable contact block 5 respectively by U-shaped clamping plate 6 and is connected in described moving contact 3 two ends.
Described low-pressure fusing disconnecting switch also is provided with muffler, and described muffler is comprised of the moving muffler 71 that is arranged on moving contact 3 and the quiet muffler 72 that is arranged on fixed contact.When described muffler has just broken away from fixed contact 4 at moving contact 3, can keep in touch, make electric current to continue circulation along muffler; Simultaneously, because the contact-making surface of muffler is less than the contact-making surface of dynamic and static contact, so the contact resistance of muffler is larger, electric current by the time diminish, effectively reduced the generation of electric arc, thus play the protection dynamic and static contact effect.
Be provided with draw ring 32 and dismounting cover 33 on described moving contact 3.Described draw ring 32 is used for adopting pull bar to disconnect or the effect of closed isolating switch, and 33, dismounting cover takes off moving contact after facilitating isolating switch to disconnect.
The end that described moving contact 3 is connected with movable contact block 5 also is provided with rotating shaft 34, and is mounted on the hanging seat 51 on movable contact block 5.Described rotating shaft 34 coordinates with hanging seat 51, makes when disconnecting isolating switch, and moving contact 3 is suspended on hanging seat 51 and is unlikely to drop suddenly, improves the fail safe of operation.
The described low-pressure fusing disconnecting switch of the utility model specific embodiment, by moving contact two ends are connected with fixed contact with movable contact block respectively by U-shaped clamping plate, and draw ring further is set on moving contact and dismantles cover, junction at fixed contact and moving contact arranges muffler, not only make moving contact be connected with the face that the is connected to contact of fixed contact, reduce contact resistance both; And the generation that electric arc when reducing the isolating switch disconnection is set of muffler, the useful life of having improved isolating switch; The setting of draw ring and dismounting cover makes the dismounting of isolating switch more convenient, rapid, thereby has improved the quality of whole isolating switch.
Although the utility model with preferred embodiment openly as above; but it is not to limit the utility model; any those skilled in the art are not within breaking away from spirit and scope of the present utility model; can make possible change and modification, therefore protection range of the present utility model should be as the criterion with the scope that the utility model claim is defined.
Claims (4)
1. low-pressure fusing disconnecting switch, comprise base plate, be fixed on two insulated columns, moving contact and fixed contacts on described base plate, described fixed contact is fixed therein on an insulated column, described moving contact is fixed on another insulated column by movable contact block, described moving contact is provided with fuse link, it is characterized in that, described moving contact two ends are connected with fixed contact with movable contact block respectively by U-shaped clamping plate.
2. low-pressure fusing disconnecting switch according to claim 1, is characterized in that, also is provided with muffler, and described muffler is comprised of the moving muffler that is arranged on moving contact and the quiet muffler that is arranged on fixed contact.
3. low-pressure fusing disconnecting switch according to claim 1, is characterized in that, is provided with draw ring and dismounting cover on described moving contact.
4. low-pressure fusing disconnecting switch according to claim 1, is characterized in that, the end that described moving contact is connected with movable contact block also is provided with rotating shaft, and be mounted on the hanging seat on movable contact block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675368 CN202996669U (en) | 2012-12-10 | 2012-12-10 | Low-voltage fuse type disconnecting switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675368 CN202996669U (en) | 2012-12-10 | 2012-12-10 | Low-voltage fuse type disconnecting switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202996669U true CN202996669U (en) | 2013-06-12 |
Family
ID=48567812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220675368 Expired - Fee Related CN202996669U (en) | 2012-12-10 | 2012-12-10 | Low-voltage fuse type disconnecting switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202996669U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715003A (en) * | 2014-01-07 | 2014-04-09 | 施恩禧电气（中国）有限公司 | Outdoor low-voltage fuse type isolating switch |
| CN104362025A (en) * | 2014-11-25 | 2015-02-18 | 辽宁华隆电力科技有限公司 | Radian column matched low-voltage knife switch |
-
2012
- 2012-12-10 CN CN 201220675368 patent/CN202996669U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715003A (en) * | 2014-01-07 | 2014-04-09 | 施恩禧电气（中国）有限公司 | Outdoor low-voltage fuse type isolating switch |
| WO2015103979A1 (en) * | 2014-01-07 | 2015-07-16 | S&C Electric (China) Company Ltd. | Outdoor low-voltage fuse disconnector |
| CN104362025A (en) * | 2014-11-25 | 2015-02-18 | 辽宁华隆电力科技有限公司 | Radian column matched low-voltage knife switch |
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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: 20130612 Termination date: 20201210 |