CN202695213U - Spring force differential interlocking apparatus among three breakers - Google Patents
Spring force differential interlocking apparatus among three breakers Download PDFInfo
- Publication number
- CN202695213U CN202695213U CN 201220415741 CN201220415741U CN202695213U CN 202695213 U CN202695213 U CN 202695213U CN 201220415741 CN201220415741 CN 201220415741 CN 201220415741 U CN201220415741 U CN 201220415741U CN 202695213 U CN202695213 U CN 202695213U
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- circuit breakers
- connecting rod
- follower link
- interlock
- link arm
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Abstract
The utility model relates to a spring force differential interlocking apparatus among three breakers. The apparatus comprises three sets of interlocking apparatus units and transmission components. The interlocking apparatus units include substrate plates, drive elements, trigger control units, and elastic elements. Driven link arms of the trigger control units include horizontal portions parallel to the plane the substrate is located at as well as vertical portions; a horizontal hole is formed on the each of the horizontal portions and the two vertical holes are respectively formed on each of the vertical portions; and one end of one elastic element is directly connected with the horizontal hole. Besides, two connecting rods with heads are also included by each of the driven link arms; one ends of other two elastic elements respectively penetrate the two vertical holes through the tails of the two connecting rods and are connected; and the elastic elements connected with the vertical holes are arranged at two sides of the vertical portions. In addition, one ends of the transmission components are connected to driving link arms and the other ends thereof are connected with the heads of the connecting rods. According to the utility model, the provided apparatus has advantages of simple structure as well as high reliability and security. Moreover, the production cost is reduced to a certain extent and the apparatus can be assembled easily.
Description
Technical field
The utility model relates to a kind of mechanical interlocks of circuit breaker, and is particularly a kind of for be that mechanical interlocking between three circuit breakers of low-voltage distribution system of power supply disjunction fills in the middle of the two-way Power supply
Background technology
For continuity and the reliability that improves power supply, extensively adopting the two-way Power supply middle in low-voltage distribution system is the low-voltage distribution mode of bus, need to realize mechanical interlocking between three circuit breakers, its requirement is: one or two circuit breakers can close arbitrarily, behind two circuit breakers that close, the 3rd circuit breaker lock can not close a floodgate.Such supply power mode is more flexible, and reliable, in low-voltage distribution system, extensively adopt, the current mode that realizes at present this interlock is to adopt three locks, two keys, every circuit breaker is installed a lock, be used for locking circuit breaker (can not close a floodgate), only have by the key release circuit breaker that just can close, operating personnel only are furnished with two keys, also can realize above mentioned interlock by 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 literature 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, be provided with a control lever on the base plate of interlock, 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 to 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 finished the movement limit 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 finished the locking to the lock shaft of circuit breaker automatically behind the movement limit of removing own control arm.
In the prior art, restriction to control lever is by the first spring that is arranged on the control lever, be hinged on the base plate, divide two control arms that are in the control lever left and right sides, and spur respectively that this two control arm rotates second, the 3rd spring cooperates to be finished, be that control lever is at two control arms, and when reaching balance under the effect of the first spring, realization is to the restriction of control lever, and when passing through pulling second, the 3rd spring makes two control arms when separately jointed shaft rotates, the power that two control arms act on the control lever is eliminated, and the balance on the control lever is destroyed, and the first spring pulling control lever rotates and makes breaker open operation.
Above-mentioned prior art, need by the hinged control arm in both sides described control lever to be limited, therefore, not only so that total is 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, so that assembling product is debugged trouble, 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, the locking of circuit breaker be will have influence on, thereby reliability and the fail safe of whole circuit breaker interlocking device had influence on.
The utility model content
The purpose of this utility model is to overcome in the prior art complex structure of the differential interlock of spring force between three circuit breakers, the assembling product trouble, the problem that reliability is low, thereby provide a kind of simple in structure, the differential interlock of spring force between reliability, safe three circuit breakers.
The utility model is the differential interlock of spring force between a kind of three circuit breakers, comprises being separately positioned on three on three circuit breakers covers interlock unit, is provided with drive disk assembly between the described interlock unit in twos, mutually controls by described drive disk assembly; Described interlock unit comprises
Base plate, described base plate are connected on the described circuit breaker;
Driver part, described driver part comprise that one is installed in the active rotation axle on the described base plate, and are arranged on the drive connecting rod arm on the described active rotation axle;
Trigger control assembly, described triggering control assembly comprises that one is installed in the driven rotating shaft on the described base plate, and is arranged on the follower link arm on the described driven rotating shaft;
Flexible member, described flexible member is provided with three, one end of each described flexible member is connected on the described pedestal, the other end links to each other with described follower link arm, and under the effect without external force, described follower link arm is the balance locking under the acting in conjunction of three described flexible members, makes described circuit breaker be in "on" position;
Be respectively equipped with two described drive disk assemblies between described drive connecting rod arm on every described circuit breaker and the described follower link arm on other two described circuit breakers;
The described drive connecting rod arm of two described circuit breakers rotates the corresponding described drive disk assembly of pulling by driving respectively wherein, destroy the Spring balanced of the 3rd the described follower link arm on the described circuit breaker, described driven rotating shaft is rotated trigger the trigger that makes the 3rd described breaker open operation; Described follower link arm comprises and the residing parallel plane horizontal component of described pedestal and vertical component, form a lateral aperture on the described horizontal component, form two upright openings on the described vertical component, an end of a described flexible member directly is connected with described lateral aperture; Also comprise two connecting rods with head, one end of all the other two described flexible members passes respectively in the two described upright openings continuous by the afterbody of two connecting rods, and the described flexible member branch office that links to each other with described upright opening is in the both sides of described vertical component, described drive disk assembly one end is connected on the described drive connecting rod arm, and the other end links to each other with the head of described connecting rod.
The cross section of described follower link arm is " L " type.
Described drive disk assembly is cable.
Described flexible member is spring.
Described active rotation axle center is provided with lock core structure.
Described connecting rod is the bearing pin with head.
The advantage of the differential interlock of spring force between a kind of three circuit breakers of the present utility model is:
The utility model only need three flexible members by the follower link arm of special connected mode acting in conjunction at the utility model special construction on, realize the 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 assembling product is debugged easily; The more important thing is that so that the reliability of interlock of the present utility model, fail safe is guaranteed.
Description of drawings
For content of the present utility model is more likely to be clearly understood, the below is described in further detail the utility model, wherein according to specific embodiment of the utility model also by reference to the accompanying drawings
Fig. 1 is the end view of the differential interlock of spring force between a kind of three circuit breakers of the utility model;
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
As Figure 1-3, the differential interlock of spring force between a kind of three circuit breakers of present embodiment, comprise being separately positioned on three on three circuit breakers covers interlock unit 1, be provided with drive disk assembly 2 between the described interlock unit in twos, mutually control by described drive disk assembly; Described interlock unit comprises base plate 3, and driver part triggers control assembly, flexible member, and wherein said base plate 3 is connected on the described circuit breaker; Described driver part comprises that one is installed in the active rotation axle 4 on the described base plate, and is arranged on the drive connecting rod arm 5 on the described active rotation axle 4; Described triggering control assembly comprises that one is installed in the driven rotating shaft 6 on the described base plate 3, and is arranged on the follower link arm 7 on the described driven rotating shaft 6; Described flexible member is provided with three, one end of each described flexible member is connected on the described pedestal, the other end links to each other with described follower link arm 7, and under the effect without external force, described follower link arm 7 is the balance locking under the acting in conjunction of three described flexible members, makes described circuit breaker be in "on" position; Be respectively equipped with two described drive disk assemblies between described drive connecting rod arm 5 on every described circuit breaker and the described follower link arm 7 on other two described circuit breakers; The described drive connecting rod arm 5 of two described circuit breakers rotates the corresponding described drive disk assembly of pulling by driving respectively wherein, destroy the Spring balanced of the 3rd the described follower link arm 7 on the described circuit breaker, described driven rotating shaft 6 is rotated trigger the trigger that makes the 3rd described breaker open operation; In the present embodiment, described trigger is the tripping mechanism that is arranged on the driven rotating shaft 6, by 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.
Described follower link arm 7 comprises and the residing parallel plane horizontal component of described pedestal and vertical component, form a lateral aperture 9 on the described horizontal component, an end that forms two upright openings, 10, one described flexible members on the described vertical component directly is connected with described lateral aperture 9; Also comprise two connecting rods 11 with head, the afterbody of one end of all the other two described flexible members by two described connecting rods 11 passes respectively in the two described upright openings 10 and links to each other, and the described flexible member branch office that links to each other with described upright opening 10 is in the both sides of described vertical component, described drive disk assembly 2 one ends are connected on the described drive connecting rod arm 5, and the other end links to each other with the head of described connecting rod 11.Described connecting rod 11 tail ends with head are connected with flexible member, and head end is connected with drive disk assembly.The utility model only need three flexible members by special mode acting in conjunction on the follower link arm 7 of the utility model special construction, realize the 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 assembling product is debugged easily; The more important thing is that so that the reliability of interlock of the present utility model, fail safe is guaranteed.
In the present embodiment, the cross section of described follower link arm 7 is " L " type, described drive disk assembly 2 is preferably cable, described flexible member is preferably spring, be 8-1,8-2, the 8-3 in the Reference numeral, described active rotation axle 4 centers are provided with lock core structure, and described connecting rod 11 is the bearing pin with head.
The course of work of the present utility model:
Close a floodgate with circuit breaker 1#, 2#, circuit breaker 3# separating brake is 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 a cable spurs the upper bearing pin that is connected with spring 8-1 of circuit breaker 3#, so 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; The upper bearing pin that is connected with spring 8-3 of another cable pulling circuit breaker 2#, so that circuit breaker, the spring 8-3 on the 2# is elongated, but the L shaped connecting rod on the circuit breaker 2# can not rotate under the assurance of another group moment;
Rotate again the active rotation axle 4 on the circuit breaker 2#, drive connecting rod arm 5 is rotated around active rotation axle 4, cable on the drive connecting rod arm 5 can elongate spring 8-3 on the circuit breaker 3# and the spring 8-1 of circuit breaker 1# 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 for guaranteeing that the moment of not rotating disappears, only there is the upper power of spring 8-2, 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, above-described embodiment only is for example clearly is described, and is not the restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And the apparent variation of being extended out thus or change still are among the protection range of the present utility model.
Claims (6)
1. the differential interlock of spring force between three circuit breakers, comprise and be separately positioned on the cover of three on three circuit breakers interlock unit (1), be provided with in twos drive disk assembly (2) between the described interlock unit (1), by mutually control of described drive disk assembly (2); Described interlock unit (1) comprises
Base plate (3), described base plate (3) is connected on the described circuit breaker;
Driver part, described driver part comprise that one is installed in the active rotation axle (4) on the described base plate (3), and are arranged on the drive connecting rod arm (5) on the described active rotation axle (4);
Trigger control assembly, described triggering control assembly comprises that one is installed in the driven rotating shaft (6) on the described base plate (3), and is arranged on the follower link arm (7) on the described driven rotating shaft (6);
Flexible member, described flexible member is provided with three, one end of each described flexible member is connected on the described pedestal, the other end links to each other with described follower link arm (7), and under the effect without external force, described follower link arm (7) is the balance locking under the acting in conjunction of three described flexible members, makes described circuit breaker be in "on" position;
Be respectively equipped with two described drive disk assemblies (2) between described drive connecting rod arm (5) on every described circuit breaker and the described follower link arm (7) on other two described circuit breakers;
The described drive connecting rod arm 5 of two described circuit breakers rotates pulling corresponding described drive disk assembly (2) by driving respectively wherein, destroy the Spring balanced of the described follower link arm (7) on the 3rd the described circuit breaker, described driven rotating shaft (6) is rotated trigger the trigger that makes the 3rd described breaker open operation;
It is characterized in that: described follower link arm (7) comprises and the residing parallel plane horizontal component of described pedestal and vertical component, form a lateral aperture (9) on the described horizontal component, form two upright openings (10) on the described vertical component, an end of a described flexible member directly is connected with described lateral aperture (9); Also comprise two connecting rods (11) with head, one end of all the other two described flexible members passes respectively in the two described upright openings (10) continuous by the afterbody of two described connecting rods (11), and the described flexible member branch office that links to each other with described upright opening (10) is in the both sides of described vertical component, described drive disk assembly (2) one ends are connected on the described drive connecting rod arm 5, and the other end links to each other with the head of described connecting rod (11).
2. the differential interlock of spring force between three circuit breakers according to claim 1, it is characterized in that: the cross section of described follower link arm (7) is " L " type.
3. the differential interlock of spring force between three circuit breakers according to claim 1, it is characterized in that: described drive disk assembly (2) is cable.
4. the differential interlock of spring force between three circuit breakers according to claim 1, it is characterized in that: described flexible member is spring.
5. the differential interlock of spring force according to claim 1-4 between each described three circuit breakers is characterized in that: described active rotation axle (4) center is provided with lock core structure.
6. according to the differential interlock of spring force between three circuit breakers claimed in claim 5, it is characterized in that: described connecting rod (11) is the bearing pin with head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220415741 CN202695213U (en) | 2012-08-21 | 2012-08-21 | Spring force differential interlocking apparatus among three breakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220415741 CN202695213U (en) | 2012-08-21 | 2012-08-21 | Spring force differential interlocking apparatus among three breakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202695213U true CN202695213U (en) | 2013-01-23 |
Family
ID=47550794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220415741 Withdrawn - After Issue CN202695213U (en) | 2012-08-21 | 2012-08-21 | Spring force differential interlocking apparatus among three breakers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202695213U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820149A (en) * | 2012-08-21 | 2012-12-12 | 浙江天正电气股份有限公司 | Spring force differential interlocking device among three circuit breakers |
| CN105609343A (en) * | 2016-03-11 | 2016-05-25 | 天津市百利电气有限公司 | Mechanical interlocking apparatus for low-voltage circuit breakers |
| CN105609342A (en) * | 2016-03-11 | 2016-05-25 | 天津市百利电气有限公司 | Mechanical interlocking apparatus for low-voltage circuit breakers |
| CN107833769A (en) * | 2017-11-01 | 2018-03-23 | 贵州泰永长征技术股份有限公司 | Interlocking mechanism and interlock |
-
2012
- 2012-08-21 CN CN 201220415741 patent/CN202695213U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820149A (en) * | 2012-08-21 | 2012-12-12 | 浙江天正电气股份有限公司 | Spring force differential interlocking device among three circuit breakers |
| CN102820149B (en) * | 2012-08-21 | 2015-04-08 | 浙江天正电气股份有限公司 | Spring force differential interlocking device among three circuit breakers |
| CN105609343A (en) * | 2016-03-11 | 2016-05-25 | 天津市百利电气有限公司 | Mechanical interlocking apparatus for low-voltage circuit breakers |
| CN105609342A (en) * | 2016-03-11 | 2016-05-25 | 天津市百利电气有限公司 | Mechanical interlocking apparatus for low-voltage circuit breakers |
| CN107833769A (en) * | 2017-11-01 | 2018-03-23 | 贵州泰永长征技术股份有限公司 | Interlocking mechanism and interlock |
| CN107833769B (en) * | 2017-11-01 | 2019-10-25 | 贵州泰永长征技术股份有限公司 | Interlocking mechanism and interlock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130123 Effective date of abandoning: 20150408 |
|
| RGAV | Abandon patent right to avoid regrant |