CN2371662Y - Low-voltage knife-shaped isolator - Google Patents
Low-voltage knife-shaped isolator Download PDFInfo
- Publication number
- CN2371662Y CN2371662Y CN 99226180 CN99226180U CN2371662Y CN 2371662 Y CN2371662 Y CN 2371662Y CN 99226180 CN99226180 CN 99226180 CN 99226180 U CN99226180 U CN 99226180U CN 2371662 Y CN2371662 Y CN 2371662Y
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- CN
- China
- Prior art keywords
- isolator
- main shaft
- snap close
- adjustable hinge
- frame type
- 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 low-voltage knife-shaped isolator, which is formed by adding a main shaft interlock mechanism and an unlocking mechanism in HD series knife switch structures. The main shaft interlock mechanism is composed of an adjustable hinge lock plate which is arranged on a bottom plate of an isolation switch and [a] frame type lock catch which is arranged on the main shaft; the frame type lock catch can lock the main shaft of the isolator automatically under the tension force of torsion springs when the isolator is closed; because the main shaft is connected with moving contact namely a knife blade directly via insulation pieces, and thus the frame type lock catch can fix the moving contact effectively, and eliminate the contact bounce caused by electromotive force in a short circuit strength test, and the short-time tolerance capacity of the isolator can be heightened effectively. The frame type lock catch is enabled to break from a trip isolator of the adjustable hinge lock plate.
Description
The utility model relates to a kind of low voltage component one low pressure knife-shaped isolator that is used for the low-voltage complete power distribution equipment, belongs to the low voltage electrical apparatus technology field.
This low pressure knife-shaped isolator is formed by the existing low pressure knife-shaped isolator transformation of the way.HD17 series isolator is the isolator that generally adopts at present, is made up of operating mechanism and switch two parts.Operating mechanism is installed on the framework panel of low-voltage complete power distribution cabinet, and switch is installed in the framework.Both are connected by draw bar, motion by operating mechanism, make the switch contact branch, close, realize the switching of circuit, when short circuit current occurring in the circuit, the moving contact of switch only depends on the self-locking of operating mechanism to prevent that spring from being far from being enough, and this is the shortcoming of above-mentioned isolator, and their maximum short time withstand current only is 35KA, can not adapt to the low-voltage distribution needs.
The purpose of this utility model is one to provide a kind of relatively simple for structure, can make short time withstand current reach the novel low pressure knife-shaped isolator of the high short circuit current ability of 50KA, to satisfy the needs of low-voltage complete power distribution equipment.
Scheme of the present utility model is: in the low pressure knife-shaped isolator of forming by operating mechanism and knife switch, set up frame snap close and adjustable hinge formula jam plate, be contained in respectively on the switch spindle and switch baseplate on.Owing to increase said mechanism, when this low pressure knife-shaped isolator closes a floodgate, main shaft is pinned by the frame-type snap close, electricity will pin moving contact by the insulating part that is connected with main shaft exactly, moving contact is fused by frame snap close and switch baseplate, can prevent effectively that moving contact from because of the spring that short circuit current causes, having improved the short-circuit strength of low pressure isolator, and make its maximum short time withstand current reach 50KA.By the release mechanism action, snap close and hinge type jam plate are threaded off, isolator just can be made opening operation.
Below in conjunction with drawings and Examples scheme of the present utility model is further described.
Fig. 1 is a topology view of the present utility model.
Fig. 2 is the scheme of installation of the utility model inner body on the isolator base plate.
(1) is that isolator and base plate, (2) are pressing plate for moving contact, (15) for handle, (16) for insulating part, (14) for main shaft, (13) for backing plate, (12) for adjustable hinge formula jam plate, (11) for release skid plate, (10) for torsion spring, (9) for draw bar, (8) for frame snap close, (7) for steel wire rope, (6) for release mechanism, (5) for unlocking knob, (4) for transmission mechanism, (3) among Fig. 1.
(10) to be adjustable hinge formula jam plate, (11) be torsion spring for steel wire rope, (9) for release skid plate, (8) for frame snap close, (5) for draw bar, (6) for isolator and base plate, (7) for backing plate, (1) among Fig. 2.
Structure and working condition for this low pressure knife-shaped isolator clearly is described see figures.1.and.2 and are summarized.Its structure of this isolator is made up of operating mechanism and switch, because the needs of function, it has set up frame snap close and adjustable hinge formula jam plate.Be installed in the central adjustable hinge formula jam plate (10) of isolator base plate (1), be installed in the frame snap close on the main shaft (12), when draw bar (7) under the pulling of the handle (15) of operating mechanism (2), the main shaft that makes it to connect (12), insulating part (13), moving contact (14) motion, and finally make moving contact (14) be in closing position.At this moment, frame snap close (6) pins under the effect that is installed on the last torsion spring (8) of main shaft (12) automatically with adjustable hinge formula jam plate (10).During release, rotation is installed on the unlocking knob (3) of operating mechanism (2), transmission by release mechanism (4), make release skid plate (9) motion that connects with steel wire rope (5), frame snap close (6) can be pulled upwardly, frame snap close (6) and adjustable hinge formula jam plate (10) are threaded off, like this isolator just can be under the promotion of the handle (15) of operating mechanism (2) normal separating brake.
The difference of this low pressure knife-shaped isolator and prior art is to have increased frame snap close (6) and adjustable hinge formula jam plate (10), and distance between the two can be regulated, the gap between the elimination.Frame snap close (6) can change with the variation of draw bar (7) position on main shaft (12), as long as isolator and operating grip (15) are installed in the normal mounting scope, frame snap close (6) is in the isolator "on" position all the time, promptly fasten adjustable hinge formula jam plate (10), connecting between the release mechanism (4) on the transmission mechanism (2) and the frame snap close (6), be not subjected to distance limit, guaranteed with steel wire rope (5).
It more than is most preferred embodiment of the present utility model.
Because the utility model increases a kind of simple mechanism in former isolator, to form new isolator and greatly improve than the performance and the parameter of former isolator, economic benefit is fairly obvious, can replace former isolator, becomes new generation product.
Claims (1)
1, a kind of low pressure knife-shaped isolator is made up of operating mechanism (2) and switch (1), it is characterized in that it has set up frame snap close (6) adjustable hinge formula jam plate (10), be installed in respectively on the base plate of the main shaft (12) of this isolator and switch (1), adjustable hinge formula jam plate (10) and frame snap close (6) apart from scalable, gap between the elimination, frame snap close (6) can change with the variation of draw bar (7) position on main shaft (12), as long as isolator and operating grip (15) are installed in the normal mounting scope, frame snap close (6) is in the isolator "on" position all the time, promptly fasten adjustable hinge formula jam plate (10), connecting between the release mechanism (4) on the transmission mechanism (2) and the frame snap close (6), be not subjected to distance limit, guaranteed with steel wire rope (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99226180 CN2371662Y (en) | 1999-04-05 | 1999-04-05 | Low-voltage knife-shaped isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99226180 CN2371662Y (en) | 1999-04-05 | 1999-04-05 | Low-voltage knife-shaped isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2371662Y true CN2371662Y (en) | 2000-03-29 |
Family
ID=34015917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99226180 Expired - Fee Related CN2371662Y (en) | 1999-04-05 | 1999-04-05 | Low-voltage knife-shaped isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2371662Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488423B (en) * | 2008-01-14 | 2011-06-01 | 上海电科电器科技有限公司 | Selective protection switch and operation mechanism thereof |
| CN102468065A (en) * | 2010-11-12 | 2012-05-23 | 河南省电力公司濮阳供电公司 | On-pole isolation switch locking device |
-
1999
- 1999-04-05 CN CN 99226180 patent/CN2371662Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101488423B (en) * | 2008-01-14 | 2011-06-01 | 上海电科电器科技有限公司 | Selective protection switch and operation mechanism thereof |
| CN102468065A (en) * | 2010-11-12 | 2012-05-23 | 河南省电力公司濮阳供电公司 | On-pole isolation switch locking device |
| CN102468065B (en) * | 2010-11-12 | 2014-02-26 | 河南省电力公司濮阳供电公司 | On-pole isolation switch locking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |