CN102820149A - Spring force differential interlocking device among three circuit breakers - Google Patents
Spring force differential interlocking device among three circuit breakers Download PDFInfo
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- CN102820149A CN102820149A CN2012102984792A CN201210298479A CN102820149A CN 102820149 A CN102820149 A CN 102820149A CN 2012102984792 A CN2012102984792 A CN 2012102984792A CN 201210298479 A CN201210298479 A CN 201210298479A CN 102820149 A CN102820149 A CN 102820149A
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- circuit breakers
- connecting rod
- spring force
- interlock
- follower link
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Abstract
The invention relates to a spring force differential interlocking device among three circuit breakers, which comprises three sets of interlocking device units and transmission parts. Each interlocking device unit comprises a base plate, a driving part, a trigger control part and elastic elements. A driven connecting rod arm of each trigger control part comprises a horizontal part and a vertical part, wherein the horizontal part is in parallel with the plane where the base plate is located. A horizontal hole is molded in the horizontal part. Two vertical holes are molded in the vertical part. One end of one elastic element is directly connected with the horizontal hole. The driven connecting rod arm additionally comprises two connecting rods with a head respectively. One ends of other two elastic elements respectively penetrate through and are connected in the two vertical holes through the tails of the two connecting rods. The elastic elements which are connected with the vertical holes are distributed on the two sides of the vertical part. One ends of the transmission parts are connected onto driving connecting rod arms and the other ends of the transmission parts are connected with the heads of the connecting rods. The spring force differential interlocking device among three circuit breakers has the advantages that not only is the structure simple and are the reliability and the safety high, but also the production cost is reduced to a certain extent and the device is easier to assemble.
Description
Technical field
The present invention relates to a kind of mechanical interlocks of circuit breaker, particularly a kind of two-way power supply power supply centre that is used for is the mechanical interlocks between three circuit breakers of the low-voltage distribution system of power supply disjunction
Background technology
For continuity and the reliability that improves power supply; In low-voltage distribution system, extensively adopting the power supply of two-way power supply middle is the low-voltage distribution mode of bus; Need to realize mechanical interlocking between three circuit breakers, its requirement is: can close arbitrarily one or two circuit breakers, behind two circuit breakers that close; The 3rd circuit breaker locking can not be closed a floodgate.Such supply power mode is more flexible, and reliable, in low-voltage distribution system, extensively adopts; The current mode that realizes this interlock at present is to adopt three locks, two keys, and every circuit breaker is installed a lock, is used for locking circuit breaker (can not close a floodgate); Have only through the key release circuit breaker that just can close, operating personnel only are furnished with two keys, also can realize above mentioned interlock through such mode; But can only realize on the spot, and need manually to operate comparatively loaded down with trivial details at every turn.This cover interlock that this patent provides adopts the spring force differential principle, and is simple to operate, reliable, can easily realize interlock.
Chinese patent document CN101101821A discloses a kind of circuit breaker group with interlock; This circuit breaker group with interlock discloses following technical characterictic: each interlock comprises driver part; Control assembly; Lock Part, base plate and cable means, the base plate of interlock are provided with a control lever, a drive rod, two control arms and three flexible members; Wherein control lever is connected with the trigger of breaker lockout device; Drive rod operationally is connected with driving mechanism on the circuit breaker; The wirerope that is connected two cables at the drive rod two ends on any circuit breaker links to each other with a control arm of two other circuit breaker respectively; Control arm is accomplished the limit movement of control lever or is lifted restrictions under the acting in conjunction of wirerope pulling force and flexible member elastic force; Control lever under the elastic force effect of flexible member, is accomplished the locking to the lock shaft of circuit breaker automatically after the limit movement of removing own control arm.
In this prior art, be by first spring that is arranged on the control lever to the qualification of control lever, be hinged on the base plate; Divide to be in two control arms of the control lever left and right sides, and spur second, third spring cooperation completion that this two control arm rotates respectively, promptly control lever is at two control arms; And when reaching balance under the effect of first spring; Realization is to the qualification of control lever, and when making two control arms when separately jointed shaft rotates through spurring second, third spring, the power that two control arms act on the control lever is eliminated; Balance on the control lever is destroyed, and first spring pulling control lever rotates and makes breaker open operation.
Above-mentioned prior art needs through the hinged control arm in both sides said control lever to be limited, therefore; Not only make total complicated, processing cost is high, and owing to will pass through three springs; Act on respectively on two control arms and the control lever, make the stressed balance that reaches on the control lever, make the product assembly and adjustment trouble of getting up; The more important thing is that the assembly precision requirement is high; As long as wherein a control arm has problem a little with corresponding spring assembling, will have influence on the locking of circuit breaker, thereby have influence on the reliability and the fail safe of whole circuit breaker interlocking device.
Summary of the invention
The complex structure that the objective of the invention is to overcome in the prior art the differential interlock of spring force between three circuit breakers; Product assembling trouble; The problem that reliability is low, thus provide a kind of simple in structure, the differential interlock of spring force between reliability, safe three circuit breakers.
The present invention is the differential interlock of spring force between a kind of three circuit breakers, comprises being separately positioned on the cover of three on three circuit breakers interlock unit, and said in twos interlock is provided with drive disk assembly between the unit, controls each other through said drive disk assembly; Said interlock unit comprises
Base plate, said base plate are connected on the said circuit breaker;
Driver part, said driver part comprise that one is installed in the active rotation axle on the said base plate, and are arranged on the drive connecting rod arm on the said active rotation axle;
Trigger control assembly, said triggering control assembly comprises that one is installed in the driven rotating shaft on the said base plate, and is arranged on the follower link arm on the said driven rotating shaft;
Flexible member; Said flexible member is provided with three; One end of each said flexible member is connected on the said pedestal, and the other end links to each other with said follower link arm, and under the effect of no external force; Said follower link arm is the balance locking under the acting in conjunction of three said flexible members, makes said circuit breaker be in "on" position;
Be respectively equipped with two said drive disk assemblies between said drive connecting rod arm on every said circuit breaker and the said follower link arm on other two said circuit breakers;
The said drive connecting rod arm of two said circuit breakers rotates the corresponding said drive disk assembly of pulling through driving wherein respectively; Destroy the Spring balanced of the 3rd the said follower link arm on the said circuit breaker, said driven rotating shaft is rotated trigger the trigger that makes the 3rd said breaker open operation; Said follower link arm comprises and residing parallel plane horizontal component of said pedestal and vertical component; Form a lateral aperture on the said horizontal component; Form two upright openings on the said vertical component, an end of a said flexible member directly is connected with said lateral aperture; Also comprise two connecting rods with head; One end of all the other two said flexible members passes in the two said upright openings continuous respectively through the afterbody of two connecting rods; And the said flexible member branch office that links to each other with said upright opening is in the both sides of said vertical component; Said drive disk assembly one end is connected on the said drive connecting rod arm, and the other end links to each other with the head of said connecting rod.
The cross section of said follower link arm is " L " type.
Said drive disk assembly is a cable.
Said flexible member is a spring.
Said active rotation axle center is provided with lock core structure.
Said connecting rod is the bearing pin that has head.
The advantage of the differential interlock of spring force between a kind of three circuit breakers of the present invention is:
The present invention only need three flexible members through the follower link arm of special connected mode acting in conjunction at special construction of the present invention on, realize control to the rotation of follower link arm,
From a structural point, simple in structure; From economic angle, handling ease, cost is lower; From realizing effect, realize follower link arm balance under the acting in conjunction of three flexible members, fairly simple and easy assurance, therefore not only the product assembly and adjustment gets up easily; The more important thing is that make the reliability of interlock of the present invention, fail safe is guaranteed.
Description of drawings
For content of the present invention is more clearly understood, below according to a particular embodiment of the invention and combine accompanying drawing, the present invention is done further detailed explanation, wherein
Fig. 1 is the end view of the differential interlock of spring force between a kind of three circuit breakers of the present invention;
Fig. 2 is the structural representation of first interlock unit shown in Figure 1;
Fig. 3 is the stereogram of follower link arm;
Reference numeral is expressed as 1-interlock unit, 2-drive disk assembly, 3-base plate, 4-active rotation axle, 5-drive connecting rod arm, the driven rotating shaft of 6-, 7-follower link arm, 8-1,8-2,8-3-spring, 9-lateral aperture, 10-upright opening, 11-connecting rod among the figure.
Embodiment
Shown in Fig. 1-3; The differential interlock of spring force between a kind of three circuit breakers of present embodiment; Comprise being separately positioned on the cover of three on three circuit breakers interlock unit 1, said in twos interlock is provided with drive disk assembly 2 between the unit, controls each other through said drive disk assembly; Said interlock unit comprises base plate 3, and driver part triggers control assembly, flexible member, and wherein said base plate 3 is connected on the said circuit breaker; Said driver part comprises that one is installed in the active rotation axle 4 on the said base plate, and is arranged on the drive connecting rod arm 5 on the said active rotation axle 4; Said triggering control assembly comprises that one is installed in the driven rotating shaft 6 on the said base plate 3, and is arranged on the follower link arm 7 on the said driven rotating shaft 6; Said flexible member is provided with three; One end of each said flexible member is connected on the said pedestal; The other end links to each other with said follower link arm 7; And under the effect of no external force, said follower link arm 7 is the balance locking under the acting in conjunction of three said flexible members, makes said circuit breaker be in "on" position; Be respectively equipped with two said drive disk assemblies between said drive connecting rod arm 5 on every said circuit breaker and the said follower link arm 7 on other two said circuit breakers; The said drive connecting rod arm 5 of two said circuit breakers rotates the corresponding said drive disk assembly of pulling through driving wherein respectively; Destroy the Spring balanced of the 3rd the said follower link arm 7 on the said circuit breaker, said driven rotating shaft 6 is rotated trigger the trigger that makes the 3rd said breaker open operation; In the present embodiment, said trigger is the tripping mechanism that is arranged on the driven rotating shaft 6, through rotating driven rotating shaft 6, tripping mechanism is threaded off, and realization interlock unit can not close a floodgate and play the effect of interlocking.
Said follower link arm 7 comprises and residing parallel plane horizontal component of said pedestal and vertical component; Form a lateral aperture 9 on the said horizontal component; An end that forms two upright openings, 10, one said flexible members on the said vertical component directly is connected with said lateral aperture 9; Also comprise two connecting rods 11 with head; The afterbody of one end of all the other two said flexible members through two said connecting rods 11 passes in the two said upright openings 10 respectively and links to each other; And the said flexible member branch office that links to each other with said upright opening 10 is in the both sides of said vertical component; Said drive disk assembly 2 one ends are connected on the said drive connecting rod arm 5, and the other end links to each other with the head of said connecting rod 11.Said connecting rod 11 tail ends with head are connected with flexible member, and head end is connected with drive disk assembly.The present invention only need three flexible members through special mode acting in conjunction on the follower link arm 7 of special construction of the present invention, realize control to 7 rotations of follower link arm, from a structural point, simple in structure; From economic angle, handling ease, cost is lower; From realizing effect, realize follower link arm balance under the acting in conjunction of three flexible members, fairly simple and easy assurance, therefore not only the product assembly and adjustment gets up easily; The more important thing is that make the reliability of interlock of the present invention, fail safe is guaranteed.
In the present embodiment; The cross section of said follower link arm 7 is " L " type; Said drive disk assembly 2 is preferably cable, and said flexible member is preferably spring, i.e. 8-1 in the Reference numeral, 8-2,8-3; Said active rotation axle 4 centers are provided with lock core structure, and said connecting rod 11 is for having the bearing pin of head.
The course of work of the present invention:
Close a floodgate with circuit breaker 1#, 2#, circuit breaker 3# separating brake is an example:
Rotate the active rotation axle 4 on the circuit breaker 1#; Drive connecting rod arm 5 is rotated around active rotation axle 4; Thereby two cables on the pulling drive connecting rod arm 5; Wherein cable pulling circuit breaker 3# goes up the bearing pin that is connected with spring 8-1, makes that the spring 8-1 on the circuit breaker 3# is elongated, but the L shaped connecting rod on the circuit breaker 3# can not rotate under the assurance of another group moment; Another cable pulling circuit breaker 2# goes up the bearing pin that is connected with spring 8-3, makes circuit breaker, and the last spring 8-3 of 2# is elongated, but the L shaped connecting rod on the circuit breaker 2# can not rotate under another organizes the assurance of moment;
Rotate the active rotation axle 4 on the circuit breaker 2# again; Drive connecting rod arm 5 is rotated around active rotation axle 4, and the cable on the drive connecting rod arm 5 can elongate spring 8-3 and the spring 8-1 of circuit breaker 1# on the circuit breaker 3# equally, at this moment; Circuit breaker 1# can not rotate under the assurance of another group moment; And the L shaped connecting rod on the circuit breaker 3# is used to guarantee that the moment of not rotating disappears, and only exists spring 8-2 to go up power, and the L shaped connecting rod on the circuit breaker 3# is rotated counterclockwise; Rotate thereby drive the trip shaft that makes circuit breaker 3# separating brake, play the effect of interlocking so 3# can not close a floodgate.
Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to execution mode.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And conspicuous variation of being extended out thus or change still are among protection scope of the present invention.
Claims (6)
1. the differential interlock of spring force between three circuit breakers comprises being separately positioned on the cover of three on three circuit breakers interlock unit (1), is provided with drive disk assembly (2) between the said in twos interlock unit (1), through said drive disk assembly (2) control each other; Said interlock unit (1) comprises
Base plate (3), said base plate (3) is connected on the said circuit breaker;
Driver part, said driver part comprise that one is installed in the active rotation axle (4) on the said base plate (3), and are arranged on the drive connecting rod arm (5) on the said active rotation axle (4);
Trigger control assembly, said triggering control assembly comprises that one is installed in the driven rotating shaft (6) on the said base plate (3), and is arranged on the follower link arm (7) on the said driven rotating shaft (6);
Flexible member; Said flexible member is provided with three; One end of each said flexible member is connected on the said pedestal, and the other end links to each other with said follower link arm (7), and under the effect of no external force; Said follower link arm (7) is the balance locking under the acting in conjunction of three said flexible members, makes said circuit breaker be in "on" position;
Be respectively equipped with two said drive disk assemblies (2) between said drive connecting rod arm (5) on every said circuit breaker and the said follower link arm (7) on other two said circuit breakers;
The said drive connecting rod arm 5 of two said circuit breakers rotates pulling corresponding said drive disk assembly (2) through driving wherein respectively; Destroy the Spring balanced of the said follower link arm (7) on the 3rd the said circuit breaker, said driven rotating shaft (6) is rotated trigger the trigger that makes the 3rd said breaker open operation;
It is characterized in that: said follower link arm (7) comprises and residing parallel plane horizontal component of said pedestal and vertical component; Form a lateral aperture (9) on the said horizontal component; Form two upright openings (10) on the said vertical component, an end of a said flexible member directly is connected with said lateral aperture (9); Also comprise two connecting rods (11) with head; One end of all the other two said flexible members passes in the two said upright openings (10) continuous respectively through the afterbody of two said connecting rods (11); And the said flexible member branch office that links to each other with said upright opening (10) is in the both sides of said vertical component; Said drive disk assembly (2) one ends are connected on the said drive connecting rod arm 5, and the other end links to each other with the head of said connecting rod (11).
2. the differential interlock of spring force between three circuit breakers according to claim 1 is characterized in that: the cross section of said follower link arm (7) is " L " type.
3. the differential interlock of spring force between three circuit breakers according to claim 1 is characterized in that: said drive disk assembly (2) is a cable.
4. the differential interlock of spring force between three circuit breakers according to claim 1 is characterized in that: said flexible member is a spring.
5. according to the differential interlock of spring force between each described three circuit breakers among the claim 1-4, it is characterized in that: said active rotation axle (4) center is provided with lock core structure.
6. according to the differential interlock of spring force between described three circuit breakers of claim 5, it is characterized in that: said connecting rod (11) is for having the bearing pin of head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210298479.2A CN102820149B (en) | 2012-08-21 | 2012-08-21 | Spring force differential interlocking device among three circuit breakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210298479.2A CN102820149B (en) | 2012-08-21 | 2012-08-21 | Spring force differential interlocking device among three circuit breakers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102820149A true CN102820149A (en) | 2012-12-12 |
| CN102820149B CN102820149B (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210298479.2A Expired - Fee Related CN102820149B (en) | 2012-08-21 | 2012-08-21 | Spring force differential interlocking device among three circuit breakers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102820149B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578811A (en) * | 2013-10-30 | 2014-02-12 | 遵义长征电器制造有限公司 | Circuit breaker interlocking mechanism |
| CN106952791A (en) * | 2017-05-18 | 2017-07-14 | 南京大全电气研究院有限公司 | A kind of breaker interlock and the breaker group with interlock |
| CN107578964A (en) * | 2017-10-25 | 2018-01-12 | 林淑妹 | A kind of mechanical interlocks for air-break |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1204127A2 (en) * | 2000-11-03 | 2002-05-08 | Eaton Corporation | Mechanical and gate for interlocking electric power switches and distibution system incorporating same |
| CN101101821A (en) * | 2006-07-03 | 2008-01-09 | 浙江正泰电器股份有限公司 | Circuit breaker set with interlocking apparatus |
| US20100294629A1 (en) * | 2009-05-21 | 2010-11-25 | Ls Industrial Systems Co., Ltd. | Move-out type interlock apparatus for circuit breaker |
| CN202373534U (en) * | 2011-11-28 | 2012-08-08 | 常熟开关制造有限公司(原常熟开关厂） | Interlocking device of circuit breaker group |
| CN202695213U (en) * | 2012-08-21 | 2013-01-23 | 浙江天正电气股份有限公司 | Spring force differential interlocking apparatus among three breakers |
-
2012
- 2012-08-21 CN CN201210298479.2A patent/CN102820149B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1204127A2 (en) * | 2000-11-03 | 2002-05-08 | Eaton Corporation | Mechanical and gate for interlocking electric power switches and distibution system incorporating same |
| CN101101821A (en) * | 2006-07-03 | 2008-01-09 | 浙江正泰电器股份有限公司 | Circuit breaker set with interlocking apparatus |
| US20100294629A1 (en) * | 2009-05-21 | 2010-11-25 | Ls Industrial Systems Co., Ltd. | Move-out type interlock apparatus for circuit breaker |
| CN202373534U (en) * | 2011-11-28 | 2012-08-08 | 常熟开关制造有限公司(原常熟开关厂） | Interlocking device of circuit breaker group |
| CN202695213U (en) * | 2012-08-21 | 2013-01-23 | 浙江天正电气股份有限公司 | Spring force differential interlocking apparatus among three breakers |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578811A (en) * | 2013-10-30 | 2014-02-12 | 遵义长征电器制造有限公司 | Circuit breaker interlocking mechanism |
| CN103578811B (en) * | 2013-10-30 | 2016-03-30 | 遵义长征电器制造有限公司 | Circuit breaker interlocking device |
| CN106952791A (en) * | 2017-05-18 | 2017-07-14 | 南京大全电气研究院有限公司 | A kind of breaker interlock and the breaker group with interlock |
| CN106952791B (en) * | 2017-05-18 | 2019-04-09 | 江苏大全凯帆开关有限公司 | A kind of breaker interlock and the breaker group with interlock |
| CN107578964A (en) * | 2017-10-25 | 2018-01-12 | 林淑妹 | A kind of mechanical interlocks for air-break |
| CN107578964B (en) * | 2017-10-25 | 2018-11-23 | 谢志坚 | A kind of mechanical interlocks for air-break circuit-breaker |
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| Publication number | Publication date |
|---|---|
| CN102820149B (en) | 2015-04-08 |
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Granted publication date: 20150408 Termination date: 20180821 |