CN203445072U - Rebound-prevention device used for circuit breaker mechanism - Google Patents
Rebound-prevention device used for circuit breaker mechanism Download PDFInfo
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- CN203445072U CN203445072U CN201320455625.8U CN201320455625U CN203445072U CN 203445072 U CN203445072 U CN 203445072U CN 201320455625 U CN201320455625 U CN 201320455625U CN 203445072 U CN203445072 U CN 203445072U
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- cantilever
- support
- shaft
- backstop
- push rod
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Abstract
A rebound-prevention device used for a circuit breaker mechanism includes a limiting shaft, a stopping cantilever, a limiting cantilever, a push rod, a tripping driver shaft and a support; the tripping driver shaft is in linkage with a main shaft of the mechanism; an oblong hole is formed at the middle of the push rod; the middle of the support is provided with a fixing shaft; the fixing shaft passes through the oblong hole; the upper end of the limiting cantilever is sleeved on the main shaft; the lower end of the stopping cantilever is connected with the limiting cantilever through a pin shaft; a spring is arranged between the pin shaft and the support; the upper end of the stopping cantilever is arranged inside the support through a pin shaft; a torsion spring is arranged between the pin shaft and the stopping cantilever or between the support and the stopping cantilever; the limiting shaft is arranged inside the support; and the limiting shaft is adjacent to the lower end of the stopping cantilever. According to the rebound-prevention device used for the circuit breaker mechanism of the utility model, the upward and downward rotation of the tripping driver shaft after switching off and energy storage makes the push rod which is connected with the tripping driver shaft to move upwards and downwards with the rotation of the tripping driver shaft; when the push rod moves downwards, the lower end of the push rod presses the stopping cantilever, such that the stopping cantilever is clamped by the limiting shaft, and therefore, the rebound of the main shaft of the mechanism, which is caused by the effect of a reacting spring after the main shaft rotates in place, can be avoided.
Description
Technical field:
The utility model relates to electricity field, relates in particular to the operating mechanism of low pressure all-purpose circuit breaker, particularly a kind of anti-rebound device for disconnecting mechanism.
Background technology:
Along with the raising of national life level, the increasing of power consumption equipment, power load constantly increases, and the reliability of electricity consumption and fail safe have been proposed to higher and requirement.Requirement to the electrical endurance of circuit breaker and breaking capacity is more and more higher.In prior art, all there is mechanism's rebound problem in omnipotent breaker product, because mechanism's rebound is in circuit breaker breaking course, can cause arcing to repeat, and circuit breaker is serious to pitting of contacts in continuing the process of arcing, thereby electrical endurance and the breaking capacity of circuit breaker have been reduced.
In addition,, due to the development of every profession and trade, circuit breaker is through being usually used in 1000V rated voltage environment.In 1000V environment for use, the breaking course of circuit breaker produces stronger electric arc because voltage is too high, because mechanism produces rebound in breaking course, so can continuing arcing due to the generation of rebound, contact cause its scaling loss serious again, and very large on the electrical endurance impact of circuit breaker.In addition, because the intelligent degree of present electrical system is more and more higher, in product on/off switch process to auxiliary contact to close minute quality requirement more and more higher, the rebound due to mechanism in separating brake process of former mechanism causes auxiliary contact also to produce the phenomenon of secondary contact, and the signal that system collects is like this just inaccurate.
Summary of the invention:
The purpose of this utility model is to provide a kind of anti-rebound device for disconnecting mechanism, and when the described this anti-rebound device for disconnecting mechanism will solve prior art electro-magnetic circuit breaker separating brake, mechanism's rebound causes the technical problem of contact secondary contact.
This anti-rebound device for disconnecting mechanism of the present utility model, the operating mechanism that comprises circuit breaker, the operating mechanism of described circuit breaker is arranged on a support, the operating mechanism of circuit breaker comprises a main shaft, wherein, in described support, be provided with a dropout semiaxis, described dropout semiaxis is connected with described main shaft by a transmission mechanism, the left end of dropout semiaxis is connected on the upper end of a push rod by first bearing pin, the middle part of described push rod is provided with a Long Circle hole along the length direction of push rod, in described Long Circle hole, be provided with a fixed axis, described fixed axis is fixed in support, on main shaft, be arranged with a spacing cantilever, on described spacing cantilever, by second bearing pin, be connected with a backstop cantilever, the upper end of described backstop cantilever is connected in support by the 3rd bearing pin, between backstop cantilever and described the 3rd bearing pin or support, be provided with torsion spring, in support, be provided with a limit shaft, described limit shaft is positioned at the downside of lower end of backstop cantilever adjacent with the lower end of backstop cantilever, between the second bearing pin and support, be connected with a spring.
Further, on described spacing cantilever, by the second bearing pin, be connected with two backstop cantilevers, two described backstop cantilevers lay respectively at the forward and backward side of support.
Further, the lower end outline of backstop cantilever comprises a convex arc section, and described convex arc section and the outside of limit shaft are tangent.
Further, the lower end outline of described spacing cantilever comprises a concave arc-shaped section, and described concave arc-shaped section contacts with the periphery of described limit shaft.
Operation principle of the present utility model is: when omnipotent breaker carries out separating brake under "on" position, its release push rod promotes the semiaxis of threading off downwards, dropout semiaxis rotates counterclockwise, push rod is connected by the first bearing pin with dropout semiaxis, push rod can freely rotate around the first bearing pin, in the scope limiting at limit shaft, push rod moves down, after breaker open operation puts in place, its dropout semiaxis is rotated down certain position angle, push rod moves down and puts in place, now backstop cantilever is pushed down in the lower end of push rod, making backstop cantilever overcome torsion spring mechanical compliance hour hands moves down, now backstop cantilever is stuck on limit shaft, make limit shaft stop main shaft effect due to reaction spring after being rotated in place to produce rebound, thereby reached the effect of anti-rebound, and completed the whole separating brake process of circuit breaker.At product, not energy storage in the situation that, push rod is pushed down backstop cantilever all the time, and backstop cantilever is stuck on limit shaft all the time.
After completing to breaker energy storage, in the clockwise direction of dropout semiaxis, rotate, in the scope that push rod limits at limit shaft, move up, now the lower end of push rod and backstop cantilever produce gap, thereby untie, prevent rebound locking, circuit breaker can carry out closing operation, no matter is to use closing electromagnets remote operation, still use hand push button to close a floodgate, all can reliably close a floodgate.
The utility model and prior art are compared, and its effect is actively with obvious.The up and down rotation of dropout semiaxis in the utility model after separating brake and energy storage, makes the push rod of its connection move up and down along with the rotation of dropout semiaxis.When push rod moves down, backstop cantilever is pushed down in the lower end of push rod, and the limited axle of backstop cantilever is blocked, and has prevented the rebound producing due to the effect of reaction spring after mechanism's main shaft is rotated in place.
Accompanying drawing explanation:
Fig. 1 is the structural representation that can close a floodgate after energy storage under gate-dividing state for the anti-rebound device of disconnecting mechanism of the present utility model.
Fig. 2 is that the utility model is for the structural representation of the anti-rebound device of disconnecting mechanism.
Embodiment:
Embodiment 1:
As depicted in figs. 1 and 2, anti-rebound device for disconnecting mechanism of the present utility model, the operating mechanism 1 that comprises circuit breaker, the operating mechanism 1 of described circuit breaker is arranged on a support 12, the operating mechanism 1 of circuit breaker comprises a main shaft 8, wherein, in described support 12, be provided with a dropout semiaxis 7, described dropout semiaxis 7 is connected with described main shaft 8 by a transmission mechanism, the left end of dropout semiaxis 7 is connected on the upper end of a push rod 6 by first bearing pin 9, the middle part of described push rod 6 is provided with a Long Circle hole along the length direction of push rod 6, in described Long Circle hole, be provided with a fixed axis 5, described fixed axis 5 is fixed in support 12, on main shaft 8, be arranged with a spacing cantilever 4, on described spacing cantilever 4, by second bearing pin 11, be connected with a backstop cantilever 3, the upper end of described backstop cantilever 3 is connected in support 12 by the 3rd bearing pin 10, between backstop cantilever 3 and described the 3rd bearing pin 10 or support 12, be provided with torsion spring (not shown), in support 12, be provided with a limit shaft 2, described limit shaft 2 is positioned at the downside of lower end of backstop cantilever 3 adjacent with the lower end of backstop cantilever 3, between the second bearing pin 11 and support 12, be connected with a spring 13.
Further, on described spacing cantilever 4, by the second bearing pin 11, be connected with two backstop cantilevers 3, two described backstop cantilevers 3 lay respectively at the forward and backward side of support 12.
Further, the lower end outline of backstop cantilever 3 comprises a convex arc section, and described convex arc section and the outside of limit shaft 2 are tangent.
Further, the lower end outline of described spacing cantilever 4 comprises a concave arc-shaped section, and described concave arc-shaped section contacts with the periphery of described limit shaft 2.
The operation principle of the present embodiment is: when omnipotent breaker carries out separating brake under "on" position, its release push rod promotes the semiaxis 7 of threading off downwards, dropout semiaxis 7 rotates counterclockwise, push rod 6 is connected by the first bearing pin 9 with dropout semiaxis 7, push rod 6 can freely rotate around the first bearing pin 9, in the scope limiting at limit shaft 2, push rod 6 moves down, after breaker open operation puts in place, its dropout semiaxis 7 is rotated down certain position angle, push rod 6 moves down and puts in place, now backstop cantilever 3 is pushed down in the lower end of push rod 6, making backstop cantilever 3 overcome torsion spring mechanical compliance hour hands moves down, now backstop cantilever 3 is stuck on limit shaft 2, make limit shaft 2 stop main shafts 8 after being rotated in place because the effect of reaction spring 13 produces rebound, thereby reached the effect of anti-rebound, and completed the whole separating brake process of circuit breaker.At product, not energy storage in the situation that, push rod 6 is pushed down backstop cantilever 3 all the time, and backstop cantilever 3 is stuck on limit shaft 2 all the time.
After completing to breaker energy storage, in 7 clockwise directions of dropout semiaxis, rotate, in the scope that push rod 6 limits at limit shaft 2, move up, now the lower end of push rod 6 and backstop cantilever 3 produce gap, thereby untie, prevent rebound locking, circuit breaker can carry out closing operation, no matter is to use closing electromagnets remote operation, still use hand push button to close a floodgate, all can reliably close a floodgate.
Claims (4)
1. the anti-rebound device for disconnecting mechanism, the operating mechanism that comprises circuit breaker, the operating mechanism of described circuit breaker is arranged on a support, the operating mechanism of circuit breaker comprises a main shaft, it is characterized in that: in described support, be provided with a dropout semiaxis, described dropout semiaxis is connected with described main shaft by a transmission mechanism, the left end of dropout semiaxis is connected on the upper end of a push rod by first bearing pin, the middle part of described push rod is provided with a Long Circle hole along the length direction of push rod, in described Long Circle hole, be provided with a fixed axis, described fixed axis is fixed in support, on main shaft, be arranged with a spacing cantilever, on described spacing cantilever, by second bearing pin, be connected with a backstop cantilever, the upper end of described backstop cantilever is connected in support by the 3rd bearing pin, between backstop cantilever and described the 3rd bearing pin or support, be provided with torsion spring, in support, be provided with a limit shaft, described limit shaft is positioned at the downside of lower end of backstop cantilever adjacent with the lower end of backstop cantilever, between the second bearing pin and support, be connected with a spring.
2. the anti-rebound device for disconnecting mechanism as claimed in claim 1, is characterized in that: on described spacing cantilever, by the second bearing pin, be connected with two backstop cantilevers, two described backstop cantilevers lay respectively at the forward and backward side of support.
3. the anti-rebound device for disconnecting mechanism as claimed in claim 1, is characterized in that: the lower end outline of backstop cantilever comprises a convex arc section, and described convex arc section and the outside of limit shaft are tangent.
4. the anti-rebound device for disconnecting mechanism as claimed in claim 1, is characterized in that: the lower end outline of described spacing cantilever comprises a concave arc-shaped section, and described concave arc-shaped section contacts with the periphery of described limit shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320455625.8U CN203445072U (en) | 2013-07-29 | 2013-07-29 | Rebound-prevention device used for circuit breaker mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320455625.8U CN203445072U (en) | 2013-07-29 | 2013-07-29 | Rebound-prevention device used for circuit breaker mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445072U true CN203445072U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320455625.8U Expired - Fee Related CN203445072U (en) | 2013-07-29 | 2013-07-29 | Rebound-prevention device used for circuit breaker mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203445072U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710983A (en) * | 2016-12-22 | 2017-05-24 | 上海电器股份有限公司人民电器厂 | Operating mechanism of low-voltage circuit breaker |
| CN106783427A (en) * | 2017-03-14 | 2017-05-31 | 江苏高博锐电气有限公司 | A kind of moving contact of breaker resilience-proof device |
| CN107546074A (en) * | 2016-06-24 | 2018-01-05 | 上海电器股份有限公司人民电器厂 | A kind of resilience-proof device of breaker |
-
2013
- 2013-07-29 CN CN201320455625.8U patent/CN203445072U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546074A (en) * | 2016-06-24 | 2018-01-05 | 上海电器股份有限公司人民电器厂 | A kind of resilience-proof device of breaker |
| CN107546074B (en) * | 2016-06-24 | 2019-04-26 | 上海电器股份有限公司人民电器厂 | A kind of resilience-proof device of breaker |
| CN106710983A (en) * | 2016-12-22 | 2017-05-24 | 上海电器股份有限公司人民电器厂 | Operating mechanism of low-voltage circuit breaker |
| CN106783427A (en) * | 2017-03-14 | 2017-05-31 | 江苏高博锐电气有限公司 | A kind of moving contact of breaker resilience-proof device |
| CN106783427B (en) * | 2017-03-14 | 2019-04-12 | 江苏高博锐电气有限公司 | A kind of moving contact of breaker resilience-proof device |
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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: 20140219 |