CN1238545A

CN1238545A - Trip link structure for circuit breaker

Info

Publication number: CN1238545A
Application number: CN98102942A
Authority: CN
Inventors: 安熙一
Original assignee: LG Industrial Systems Co Ltd
Current assignee: LS Electric Co Ltd
Priority date: 1998-06-05
Filing date: 1998-06-05
Publication date: 1999-12-15
Anticipated expiration: 2018-06-05
Also published as: CN1143342C

Abstract

A connecting mechanism for the trip of breaker is composed of several breakers with static and moving contacts and arranged triangularly, operating bar connected to moving contact, main engaging disk engaged with the front surface of each phase of breaker, supporter engaged with the front surface of each phase of main engaging disk, operating joint disk for the first joint part hinged to operating bar and the second joint part supported by the first joint part of supporter, operating joint part for extending upward or downward, the first joint part connected to lower end and upper end of upper and lower joint parts, the second joint part supported by the second joint part of supporter, and the joint bar of the third joint part hinged to drive rod.

Description

Trip link structure for circuit breaker

The present invention relates to trip link structure for circuit breaker, particularly improved trip link structure for circuit breaker makes its construction minimizes with action bars with every distance of same action between circuit breaker mutually by trip link structure is set, and it can make the circuit breaker action message.

Usually, when electric power when being provided with the distribution system supply capability receiving device of overhead distribution line and underground distribution line, circuit breaker is used to separate underground distribution wire circuit.

Conventional circuit breaker with trip link structure is explained with reference to Fig. 1 and 2.

At first, arrange circuit breaker 20a in

main body

10,20b, 20c, each circuit breaker are installed to corresponding going up mutually.

Circuit breaker

20a, 20b, 20c are installed in respectively in the insulating sleeve (not shown), circuit breaker 20a, and 20b, each of 20c comprises a rest(ing) contact (not shown) and a moving contact (not shown).One end of moving contact and corresponding insulating rod 25a, 25b, one of 25c connects, and insulating rod 25a, 25b, 25c connects by pin-joint.

At this moment, the circuit breaker 20a in a plurality of circuit breakers, 20b, the end parts of 20c connects with the input of corresponding input electric power, and the output connection of remaining circuit breaker end parts and corresponding output power.

Circuit breaker 20a, 20b, the other end of 20c be as action bars 30a, 30b, and the insulating rod 25a of 30c through being connected with the moving contact (not shown), 25b, 25c and action bars coupling part 26a, 26b, 26c is to evagination.

Body engages dish 40 is through a plurality of steady pins 50 and circuit breaker 20a, 20b, the front surface engagement of 20c.

Supporter

60a, 60b, 60c are arranged to and

action bars

30a, 30b, and 30c is parallel.

Secondly, be provided with connector 90a, 90b, 90c.Each connector 90a, 90b, the mid portion of 90c and corresponding supporter 60a, 60b, the end of 60c can be dynamically connected, and an end of each connector and the corresponding drive rod 80a that is connected with operating mechanism 70,80b, 80c connects, and the other end of each connector and corresponding action bars 30a, 30b, one of 30c connects, like this

connector

90a, 90b, 90c can move forward and backward by operating mechanism 70, makes circuit breaker 20a thus, 20b, the contact action of 20c.

Among the figure, letter " a ", " b ", the facies pattern of " c " expression electric power.

In other words, letter " a " is corresponding to the A phase of electric power.Here, the phase place of electric power is changeable.

Explain the operation of traditional trip link structure with reference to the accompanying drawings now.

At first, as the drive rod 80a of every phase, when 80b, 80c rotated counterclockwise through the built-in function of operating mechanism 70, the connector 90a of every phase, 90b, 90c be with respect to every

phase supporter

60a, 60b, and 60c clockwise rotates.

As connector 90a, 90b, when 90c clockwise rotates,

action bars

30a, 30b, 30c is drawn forward, like this with through action bars coupling part 26a, 26b, the insulating rod 25a that 26c connects, 25b, the moving contact (not shown) that 25c one end parts connects separates with the rest(ing) contact (not shown).

In the separated state of rest(ing) contact (not shown),, when 26b, 26c move inward once more, carry out attended operation with the order that separation order is opposite as moving contact 26a.

But in traditional trip link structure, if the circuit breaker level is installed, then structure width is broadened.In addition, if circuit breaker is vertically installed, structure height increases.Therefore, trip link structure is done heavyly.

Thus, the purpose of this invention is to provide the trip link structure for circuit breaker that overcomes the problem that prior art runs into.

Another object of the present invention is by a kind of trip link structure for circuit breaker, can reduce the trip link structure width and circuit breaker is minimized with rounded projections arranged by the phase place of circuit breaker, and can make each circuit breaker action by the operating distance between the action bars that is identically formed drive rod and circuit breaker.

For achieving the above object, a kind of trip link structure of circuit breaker is provided, it comprise a plurality of with rounded projections arranged circuit breaker and each have rest(ing) contact and the moving contact that wherein forms, so that form a unit thus, comprise that three circuit breakers are as unit and the action bars that is connected with moving contact corresponding to three-phase; Body engages dish with the every front surface of circuit breaker mutually engagement; Support with the every phase front of body engages dish surface engaged; Have with the first pontes of action bars hinge with by the dish that is operatively connected of second coupling part of the first pontes support of support; Connector with top and bottom, the upper end hinge can be stretched downwards thus to the 3rd coupling part that is operatively connected dish that is connected with the upside circuit breaker, and the lower end hinge is to can being stretched upwards thus with downside the 3rd coupling part that is operatively connected dish that is connected of opening circuit; And have the first pontes that is connected with the upper end of the lower end of upside connector and downside connector, second coupling part supported by second coupling part of support and hinge be to the connecting rod of the 3rd coupling part of drive rod.

Following description will make other advantage of the present invention, target and feature more obvious.

Therefore from detailed description given below and only provide in a schematic way and be not limited to will more fully understand the present invention the accompanying drawing of the present invention, wherein:

Fig. 1 is the left side diagrammatic sketch that shows the conventional circuit breaker cut-away section part with trip link structure;

Fig. 2 is the preceding diagrammatic sketch that shows the conventional circuit breaker device;

Fig. 3 is the left side diagrammatic sketch that shows the breaker portion section part that has trip link structure according to the present invention;

Fig. 4 is the preceding diagrammatic sketch that shows according to release unit of the present invention;

Fig. 5 is the plane graph that shows according to trip link structure for circuit breaker of the present invention;

Fig. 6 is the left side diagrammatic sketch that shows the trip link structure according to the present invention;

Fig. 7 is the perspective view that shows according to trip link structure major part of the present invention; And

Fig. 8 A-B is the perspective exploded view that shows according to trip link structure major part of the present invention.

To explain according to trip link structure for circuit breaker of the present invention now with reference to the accompanying drawings.

Fig. 3 has shown the breaker portion section part that has trip link structure according to of the present invention, and Fig. 4 has shown according to release unit of the present invention.

So, a plurality of circuit breakers are positioned in the container 110 of main body 100, and wherein every circuitry phase forms with triangle.

Circuit breaker

200a, 200b, each comprises

insulating sleeve

206a, 206b, 206c 200c, fixed

electrode

210a, 210b, 21 0c have the vacuum circuit-breaker 209a of moving contact (not shown) and rest(ing) contact (not shown), 209b, 209c, and

movable electrode

211a, 211b, 211c.Vacuum circuit-

breaker

209a, 209b, 209c and insulating rod 230a, 230b, 230c connects, and insulating rod 230a, 230b, 230c utilize pin-joint to be inserted in action bars coupling part 220a, 220b, the through hole (not shown) that forms among the 220c.

Circuit breaker

200a, 200b is connected with the input unit of corresponding input electric power with each the end of 200c, the output connection of an end of each of remaining circuit breaker and corresponding output power.

Circuit breaker

200a, 200b, each the other end and circuit breaker 200a of 200c, 200b, the moving contact 220 of 200c connects, and becomes the action bars 300a of outside stretching, extension, 300b, 300c.

Body engages dish 120 passes through a plurality of steady pins 130 and action bars 300a, 300b, the front surface engagement of 300c.

From every phase action bars 300a that body engages dish 120 outwards stretches, 300b, 300c passes through bindiny mechanism 500 and

drive rod

400a, 400b, 400c can be dynamically connected.

In addition,

drive rod

400a, 400b, 400c is connected with operating mechanism 800, passes through the built-in function drive rod 400a of operating mechanism like this, 400b, 400c is moved up and down, and makes circuit breaker 200 for this reason, 200b, 200c can operating of contacts.

In the drawings, letter " a ", " b ", the phase place of " c " expression electric power.

In other words, the mutually given letter of electric power A " a ".The position of phase can change.

Fig. 5 and 6 has shown

circuit breaker

200a, 200b, and 200c and bindiny mechanism 500, with

drive rod

400a, 400b, 400c and a kind of geared assembly that meshes with operating mechanism 800.

As illustrated in Figures 5 and 6, bindiny mechanism 500 is at

circuit breaker

200a, 200b, the action bars 300a of 200c, 300b, 300c and

drive rod

400a, 400b, between the 400c with 120 engagements of body engages dish.

To be explained in more detail bindiny mechanism 500 with reference to figure 7 and 8A-B.

Support 510a, 510b, every phase front surface engaged of 510c and body engages dish 120.

Be operatively connected the

dish

520a, 520b, the first pontes 521a of 520c, 521b, 521c respectively with

action bars

300a, 300b, 300c connects, the

second coupling part

522a, 522b, 522c and support 510a, 510b, the first pontes 512a of 510c, 512b, 512c can be dynamically connected.

Be operatively connected the

dish

520a, 520b, the 3rd coupling part 523a of 520c, 523b, 523c respectively with connecting

rod

530a, 530b, the end parts hinge of 530c.

In addition, provide connecting

rod

540a, 540b, 540c, connector 530a therein, 530b, other end part and the first pontes 541a, the 541b of 530c, 541c hinge, and the

second coupling part

542a, 542b, 542c and support 510a, 510b, the second coupling part 511a of 510c, 511b, 511c can be dynamically connected, the

3rd coupling part

543a, 543b, 543c and

drive rod

400a, 400b, 400c can be dynamically connected.

The connector 530a that is placed in top has the upper and lower, and its middle and lower part is connected with the first pontes 541a of connecting rod 540a in the bottom.

Being placed in the connector 530b of bottom and the top of 530c is connected with 541c with the first pontes 541b of connecting

rod

540b and 540c.

Drive rod

400a, 400b, 400c and connecting rod 540a, 540b, the tie point between the 540c forms at identical height.

Simultaneously, it is identical that the downward spread length of upside connector 530a and

connector

530b and 530c stretch upwards length,

connector

530a, 530b, 530c and connecting rod 540a, 540b, tie point between the 540c is at sustained height, drive rod 400a like this, 400b, 400c and

circuit breaker

200a, 200b, the action bars 300a of 200c, 300b, the connection length between the 300c is identical.

Explain operation now according to trip link structure of the present invention.

At first, as drive rod 400a, when 400b, 400c clockwise rotated through operating mechanism 800 built-in functions, connecting

rod

540a, 540b, 540c be with respect to by support 510a, 510b, and the second coupling part 542a that 510c supports, 542b, 542c turns clockwise.

As connecting rod 540a, 540b, when 540c rotates,

connector

530a, 530b, 530c moves up.

As

connector

530a, 530b when 530c moves up, is operatively connected

dish

520a, 520b, and 520c is rotated counterclockwise,

action bars

300a, 300b, 300c is pulled outwardly, circuit breaker 200a like this, 200b, the moving contact 220 of 200c separates with rest(ing) contact 230.

Drive rod

540a, 540b, 540c and

circuit breaker

200a, 200b, the action bars 300a of 200c, the operating distance between 300b and the 300c is identical, and moving contact 220 can separate with rest(ing) contact 230 simultaneously like this.

In the separated state of rest(ing) contact 230, when moving contact 220 connects once more, carry out lock out operation by the order opposite with separation sequence.

As mentioned above, in trip link structure for circuit breaker according to the present invention, settle a plurality of circuit breakers by a unit that comprises three circuit breakers with triangle, the overall structure of circuit breaker is owing to width that has reduced circuit breaker and height minimize like this.In addition, make smooth operation become possibility by between drive rod and breaker operator bar, forming the identical operations distance.

Though disclosed the preferred embodiments of the present invention are for illustration purpose, those skilled in the art can carry out various modifications in scope that does not depart from claim and spirit, add and replacement.

Claims

1. a trip link structure for circuit breaker that has based on every phase of electric power and operate the operating mechanism of drive rod comprises:

A plurality of circuit breakers and each circuit breaker with rounded projections arranged have rest(ing) contact and the moving contact that is formed at wherein, form a unit thus, this unit comprises three circuit breakers as a unit with respect to three-phase, and the action bars that is connected with moving contact;

Body engages dish with the every front surface of circuit breaker mutually engagement;

Support with every phase front surface engaged of body engages dish;

Have with the first pontes of action bars hinge with by the dish that is operatively connected of second coupling part of support the first pontes support;

Have by for stretching downwards the upper end that is operatively connected dish the 3rd coupling part hinge that is connected with the upside circuit breaker and being to stretch upwards the connector that is operatively connected the lower end of coiling the 3rd coupling part hinge that is connected with the downside circuit breaker; And

Second coupling part that has the first pontes that is connected with the upper end of upside connector lower end and downside connector, supports by second coupling part of support and with the connecting rod of the 3rd coupling part of drive rod hinge.

2. according to the structure of claim 1, wherein said circuit breaker is mounted to has upside-down triangle shape.