CN101465244B - Longitudinal circuit breaker - Google Patents
Longitudinal circuit breaker Download PDFInfo
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- CN101465244B CN101465244B CN2007101602639A CN200710160263A CN101465244B CN 101465244 B CN101465244 B CN 101465244B CN 2007101602639 A CN2007101602639 A CN 2007101602639A CN 200710160263 A CN200710160263 A CN 200710160263A CN 101465244 B CN101465244 B CN 101465244B
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- circuit breaker
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- pendulum plate
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Abstract
A vertical circuit breaker comprises a circuit breaker shell body; three groups of line-feeding contact components for three-phase input and three groups of line-outlet contact components for three-phase output are respectively distributed on the circuit breaker shell body; a three-phase static contact component, a corresponding three-phase dynamic contact component and a linkage synchronous piece which drives the dynamic contact component and the static contact component to be mutually propped and separated from each other are arranged in the circuit breaker shell body; the vertical circuit breaker is characterized in that the linkage synchronous piece is a sliding rod and can be frontward and backward glidingly arranged in a spacing slide way inside the circuit breaker shell body; the sliding rod is movably connected with an output shaft pin of an operating tripping mechanism on the circuit breaker; the three-phase dynamic contact component is fixed at the upper, middle and lower positions of the sliding rod in sequence; correspondingly, the three-phase static contact component is located at the upper, middle and lower positions inside the circuit breaker shell body. The vertical circuit breaker has practical and simple structure, compact and small size, fast response and small mounting area.
Description
Technical field
The present invention relates to the main part circuit breaker in the controller switching equipment.
Background technology
This circuit breaker belongs to the three-phase protective type, when the switch of centre closes, and three-phase energising, beginning operate as normal.Every circuitry phase of circuit breaker is equipped with delay protection and instantaneous protection device, makes the usefulness of not frequent closed and disconnected under normal operation, and plays a protective role when circuit and apparatus overload, short circuit.This circuit breaker is applicable to and exchanges 50Hz (or 60Hz), nominal insulation voltage 690V, and rated operational voltage 690V and following in the circuit of rated current 63A-400A, is used for distributing electric energy.
Traditional three-phase breaker, its three-phase are that (promptly being transverse arrangement of turbo) arranged in left, center, right, and this is the main product of present three-phase breaker.But because general circuit breaker three-phase all is to discharge sidewards, this has just increased discharge area, can't delegation puts a plurality ofly, causes installation volume big, can't satisfy switch cubicle miniaturization requirement, has increased capital investment.So there are scientific and technical personnel constantly to research and develop, designing three-phase is vertically arranged circuit breaker, to reduce installation volume.
Though, the on-load switch of kind of bar shaped is abroad arranged, profile is somewhat similar, and he carries out fast tripping protection with fuse in the inside, when being short-circuited or transship, is the disconnection of carrying out circuit of blowing by fuse.Such design just can not make circuit breaker use without compensation repeatedly, takes normal replacing fuse, has not only increased expense but also inconvenience.And other two might not blow when a phase fuse blows, and this just makes that casing is charged, and is also dangerous.The area of some awareness of safety weakness when fuse blows, because can not find fuse for the moment, is perhaps used copper wire and is replaced, and this just makes to be short-circuited once more and make switch not have due defencive function that it is just unavoidable that disaster takes place.
Other looks into Chinese patent, it as the patent No. 02219344.8 Chinese patent " intermediate transmission mechanism of longitudinal circuit breaker ", it mainly comprises support, push rod and connecting lever are formed, corresponding A on the support, B, the position of C three-phase arc control device offers horizontal slideway and vertical slideway respectively, the front end of push rod is connected with the power take-off lever of operating mechanism by pin, the stage casing of push rod articulates by an end of three bearing pins and three connecting levers, the other end of three connecting levers is by bearing pin and A, B, the insulated tension pole of C three-phase arc control device articulates, aforementioned be located in horizontal slideway and the vertical slideway and push rod and connecting lever propped up be located on the support, this intermediate transmission mechanism has realized the operating mechanism of longitudinal circuit breaker and the middle transmission between the arc control device, has released a kind of novel longitudinal circuit breaker of miniaturization thus.It has positive progressive meaning than traditional circuit breaker; but because it is the vacuum circuit-breaker design of 10KVA, disposed arc control device, caused its this transmission mechanism to be fit to use on this class circuit breaker; volume ratio is bigger; structure is compact inadequately, and there are a plurality of transmission of power links the centre, causes response rapidly quick inadequately; mounting structure is reasonable inadequately; and how this patent realizes that to three-phase the protection mechanism of instantaneous protection and delay protection is further not open, also requires further improvement design.It is in 200410021227.0 the Chinese patent that similar problem also is present in the patent No..
Comprehensively above-mentioned, the longitudinal circuit breaker of developing new practicality rational in infrastructure seems very important and urgent.
Summary of the invention
Technical problem to be solved by this invention provide a kind of simple and practical, compact volume is little, response longitudinal circuit breaker efficiently rapidly.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of longitudinal circuit breaker, it includes Shell of circuit breaker, be furnished with three groups of inlet wire contact assembly and three groups of outlet contact assemblies that are used for three-phase output that are used for the three-phase input on the Shell of circuit breaker respectively, the three-phase moving contact assembly of three-phase fixed contact assembly and cooperation is set in the Shell of circuit breaker, and drive moving contact assembly and conflict of fixed contact assembly and the interlock synchronous piece that separates, the synchronous piece that it is characterized in that linking is a slide bar, can be arranged in slidingly back and forth in the spacing slideway in the Shell of circuit breaker, the output pivot pin of the manipulation tripping mechanism on slide bar and the circuit breaker flexibly connects mutually, three-phase moving contact assembly be fixed on successively slide bar on, in, upper/lower positions, accordingly, three-phase fixed contact arrangement of components in Shell of circuit breaker on, in, upper/lower positions.
As preferably, described manipulation tripping mechanism is arranged in the centre position at circuit breaker top, the flange flexible connection on the middle part at its output pivot pin and slide bar top.Like this, it is consistent with stressed easy equilibrium that slide bar is slided in slideway, and action stability improves.
As preferably, described flexible connection is that axle sleeve is connected with the socket of pivot pin or is movably hinged connection, is convenient to assembling and connects.
The improvement that is highly profitable is, described Shell of circuit breaker bottom surface is furnished with three hooks from top to down, the location indication piece that cooperates with three-phase bus bar is installed and switch is installed at hook upside and downside position, the inlet wire contact assembly that is used for three-phase input is arranged in the bottom of Shell of circuit breaker and hook and cooperates with separately busbar, and is used for the lower surface that outlet contact assembly that three-phase exports is arranged in Shell of circuit breaker.Like this, just can fix as long as directly circuit breaker is suspended on the three-phase bus bar, convenient fast, firmly, and safety, both direct hanging type was laggard, went out down.
As improvement, movable contact spring in the described moving contact assembly is to adopt metallic copper spare longitudinally to be fixed on the side of slide bar boss, accordingly, static contact in the static contact assembly is to adopt metallic copper spare laterally to be arranged in the housing of circuit breaker, scribble the silver sulfide contact on the metallic copper spare, silver sulfide is kind to conduct electricity very well and softer conductor, has avoided dynamic/static contact repeatedly to collide because of electric arc and has made the some contact phenomena that the crude injustice of contact-making surface occurs.Working stability is reliable, the very compact again practicality of structure.
As improvement, the sheathed arc-extinguish chamber that is fixed with of described moving contact assembly and fixed contact assembly, at least one side of arc-extinguish chamber is empty, for the movable contact spring activity, arc-extinguish chamber is arranged in the housing, reduces volume greatly, makes structure compact more.
As further improvement, described movable contact spring connects soft rope and is fixed on the bimetal leaf connection that is connected separately on the copper bar by conduction, connecting copper bar separately is connected with the outlet contact assembly separately of three-phase output respectively, copper bar is arranged in the housing of circuit breaker, wherein the bimetal leaf on the centre position is conflicted with the dropout pendulum plate in handling tripping mechanism and is cooperated or separate cooperation, thereby the pendulum plate bottom bit strip of threading off is favourable with electromagnetic field promote to thread off electrician's magnet steel of pendulum plate swing.The dropout pendulum plate in centre position has played important transitional function in middle tripping mechanism; its top of threading off the pendulum plate is the insulated part of band flame-retardant composition; thereby following position is to have the electrician's magnet steel that utilizes electromagnetic field to promote the swing of dropout pendulum plate, all needs to use this pendulum plate of threading off when delay protection and instantaneous protection.When middle circuitry phase overload adstante febre, make the bimetal leaf heated bending on the thermal overload release, bend to a certain degree and collide with dropout pendulum plate, the pendulum plate of threading off collides with the dropout sheet again, and trip dog is discharged, and has played the function of delay protection; When causing electric current moment owing to reasons such as short circuits, middle circuitry phase increases under 4 times of running current and the above situation; utilize the increase and the passive magnetization of electromagnetic field, produce oscillatory forces, make the pendulum plate swing of threading off; trip dog discharges simultaneously, has obtained the effect of instantaneous protection.Make the tripping operation of circuit breaker three synchronised by three alternate slide bar interlock synchronous pieces at last, more safe and reliable, avoid the still charged defective of a certain phase.
As further improvement, described upper and lower locational bimetal leaf respectively be installed in dropout pendulum plate in the Shell of circuit breaker swingably and separate or conflict and cooperate, thereby the pendulum plate bottom bit strip of threading off is favourable with the electromagnetic field electrician's magnet steel that the pendulum plate rotates that promotes to thread off, the triggering lever conflict under the pendulum plate of threading off on push pedal and the inching button formula switch (hereinafter to be referred as sensitive switch) separately or separate cooperation.One end of the sensitive switch on the upper-lower position is connected with magnet spool jointly, and the other end is received on the phase voltage outlet copper bar at place more separately, on the outlet copper bar of the phase voltage in the middle of the electromagnet other end is connected on, constitutes loop between the phase.Electromagnet is arranged on the medium position of Shell of circuit breaker, the movable end of electromagnet is conflicted directly or indirectly thread off in handling tripping mechanism the top of pendulum plate.Because respectively there is thermo bimetal's chip architecture at two ends and the pendulum plate of threading off, transship adstante febre mutually when two ends, make the bimetal leaf heating crooked, the pendulum plate swing that promotes to thread off triggers sensitive switch; Or, when causing electric current moment owing to reasons such as short circuits, electric power loop increases under 4 times of running current and the above situation, utilize the increase and the passive magnetization of electromagnetic field, produce oscillatory forces, and making the pendulum plate swing of threading off, trigger sensitive switch.Finally cause the solenoid energising, armature is by adhesive (travelling forward), and the dropout pendulum plate of bump intermediate heat overlond trip mechanism discharges trip dog, drives the action of slide bar at last by the dropout of intermediary agency, causes three-phase to trip simultaneously, reaches the protection purpose.The advantage of this structure just makes the solenoid adhesive exactly when bimetal leaf is crossed thermal flexure or threaded off pendulum plate adhesive swing, this has just protected solenoid, can allow him can not be in "on" position often, has prolonged the service life of product.
The improvement that is highly profitable is, described Shell of circuit breaker is divided into the base of lower floor, the center in middle level and the loam cake on upper strata, the superimposed successively housing that connects to form whole strip, handle tripping mechanism, connect copper bar, bimetal leaf, sensitive switch, electromagnet, the outlet connector assembly of putting plate and three-phase output of threading off is arranged in aspect between center and the loam cake, the slide bar slideway, moving contact assembly and fixed contact assembly top, arc-extinguish chamber is arranged in aspect between center and the base, the inlet wire contact assembly of three-phase input, the bottom of fixed contact assembly, location indication piece and installation switch arrangement are in base, this layer structure design, be convenient to the installation of various assemblies, convenient production, and, significantly reduce the installation width of circuit breaker, be convenient to actual installation use on switch cubicle, make the switch cubicle volume be tending towards miniaturization more.
As improvement, the movable contact spring on the described upper-lower position is distributed in the left and right side of slide bar, and the movable contact spring on the centre position is distributed in the left surface of slide bar, rationally utilizes the space in the circuit breaker, makes compact conformation, reduces width is installed.
As preferably, described manipulation tripping mechanism has the output pivot pin for drawing the bar lower end, the middle part of drawing bar is fixed on the both sides of trip dog with fixed axis, pin passes the top pin-and-hole of drawing bar and trip dog, pin and " fall U " shape are stirred between the place of buckling at fixture top drawn extension spring, stir fixture top snapping and be connected with toggle switch, the trip dog bottom is rotatably mounted on the both sides side plate with the portion mechanism seat with the rotating shaft of trip dog, be provided with to be fixed with at the rear portion of lazy-tongs seat and stir limit shaft, front portion at the lazy-tongs seat is furnished with the dropout sheet rotationally with connecting axle, lockhole on the dropout sheet cooperates with card division on the trip dog, the outside at the dropout sheet, side plate with the portion mechanism seat is equipped with the dropout pendulum plate that can swing by pivot pin and axis hole fit structure, the pendulum plate of threading off is conflict with the dropout sheet or separates cooperation that the side plate of lazy-tongs seat is fixed in the center.This manipulation tripping mechanism reaction action is rapider, reduces lag time.
At last, described dropout pendulum plate top has pivot pin, is installed in rotation on the axle sleeve of opening of the inboard face of center, so that install in housing.
Compared with prior art, the invention has the advantages that: handle tripping mechanism and drive the sound contact assembly and contact or separate by flexibly connecting direct driving interlock synchronous piece, transmission link is few, and reaction is quick more rapidly, reduce lag time, improved security performance.Simultaneously; the sound contact assembly is arranged near the interlock synchronous piece; again in conjunction with last sandwich construction design; make full use of the space in the housing; significantly reduce circuit breaker width has been installed, given full play of the little advantage of longitudinal circuit breaker erection space, adopted the laggard wiring construction that goes out down of direct hanging type; safety firmly; make things convenient for actual installation to use, short circuit and overload protection in conjunction with electromagnet and bimetal leaf realization three-phase make on the circuit breaker application circuit more safe and reliable; long service life; energy-conservation, the total design is more reasonable, compactness; volume is little, uses convenient reliable and secure and practical.
Description of drawings
Fig. 1 is the stereogram of longitudinal circuit breaker;
Fig. 2 is the three-dimensional exploded view (base portion) of longitudinal circuit breaker;
Fig. 3 is the three-dimensional exploded view (the base cover plate is to midframe part) of longitudinal circuit breaker;
Fig. 4 is the three-dimensional exploded view (center is to upper cover part) of longitudinal circuit breaker;
Fig. 5 is the three-dimensional exploded view (upper cover part) of longitudinal circuit breaker;
Fig. 6 is the three-dimensional exploded view of longitudinal circuit breaker;
Fig. 7 is the part stereogram (disconnected lock state) of longitudinal circuit breaker;
Fig. 8 is the part stereogram ("on" position) of longitudinal circuit breaker;
Fig. 9 is the phantom (disconnected lock state) of longitudinal circuit breaker;
Figure 10 is the phantom ("on" position) of longitudinal circuit breaker;
Figure 11 is the part vertical view of longitudinal circuit breaker;
Figure 12 is the schematic diagram of longitudinal circuit breaker snapping busbar;
Figure 13 is for handling the three-dimensional exploded view of tripping mechanism;
Figure 14 is the stereogram (under the trip status) for the manipulation tripping mechanism;
Figure 15 is the stereogram (under the state that closes) for the manipulation tripping mechanism;
Figure 16 is the connection diagram of sensitive switch and electromagnet.
Embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Anticipate as shown in the figure, circuit breaker of the present invention is strip on the whole, it includes base 1, center 25, loam cake 55, slide bar 14, moving contact assembly 20, fixed contact assembly 10, is used for the critical pieces such as outlet contact assembly 28, the inlet wire contact assembly 5 that is used for the three-phase input and manipulation tripping mechanism 31 that three-phase is exported, wherein base 1, center 25, loam cake 55 are superimposed together successively, are connected and fixed the strip housing of having formed circuit breaker with involutory screw.See Fig. 2, the bottom surface of base 1 is furnished with three vertical hooks 2 from top to down, two hooks 2 up and down are at the position, right side, and the hook 2 in the middle of another is in left-hand portion, upside position and downside position at hook 2 are installed location indication piece 3 respectively and switch 4 are installed, cooperate with wiring three-phase bus bar 60, have only busbar 60 that positive stop is installed, indication piece 3 is anchored on the busbar, and indication piece 3 just can indicate in the middle deck of center, and will take off circuit breaker from busbar, must press at the middle deck of center switch 4 is installed, circuit breaker is taken off, ensured and guiding construction personnel proper operation, reduce misoperation.And in base 1, be communicated with base 1 space inside at hook 2 inner chambers, make each link up with the fixing inlet wire contact assembly 5 of going up the three-phase input in 2 cavitys, wherein the inlet wire contact assembly 5 of A phase is in the hook 2 of last position, the inlet wire contact assembly 5 of B phase is in the hook 2 of middle position, and the inlet wire contact assembly 5 of C phase is in the hook 2 of upper/lower positions, inlet wire contact assembly 5 includes the inlet wire copper sheet 8 of inlet wire contact 6, spring leaf 7 and band fixed contact, wherein inlet wire contact 6 presents form of hooks, be convenient to be fastened, see Fig. 2,6,12 with busbar 60.Be connected with separately inlet wire copper sheet 8 by spring leaf 7 above the inlet wire contact 6, and each inlet wire copper sheet 8 is washed into L shaped metallic copper spare substantially, make the side of its projection become static contact 9, last band is coated with the contact of silver sulfide, has constituted fixed contact assembly 10, it is screwed on the bottom surface of base 1, other has a cover plate 11, the flexible button pin 12 of peripheral band, and eye-splice is in the jack 13 of base 1, cover plate 11 is connected on the base 1, and makes above static contact 9 laterally exposes.See Fig. 3, interlock synchronous piece drive moving contact assembly is conflicted with the fixed contact assembly and is separated cooperation, the interlock synchronous piece adopts slide bar 14, reduce the circuit breaker width effect in order to reach, cooperate with the three-phase fixed contact assembly 5 that is arranged in both sides, slide bar 14 is divided into epimere and hypomere broken line shape, mold boss 15 at the upper end right flank, longitudinally be fixed in the holddown groove 19 of boss with the metallic copper spare of two pins 16 movable contact spring 17, passing pin 16 other ends of slide bar end fixes with collar 18, in the end of slide bar holddown groove 19, make between pin and the cell wall and drawn little spring, further improve the steadiness of metallic copper spare, the side of metallic copper spare has the moving contact that is coated with silver sulfide, thereby constitute the moving contact assembly 20 of A phase, conflict with the fixed contact assembly 10 of last position or separate cooperation, a similar spline structure, also be furnished with the moving contact assembly 20 of C phase in the lower end of slide bar, cooperate with own corresponding dead point assembly 10, arrange A moving contact assembly 20 mutually at the slide bar epimere with the junction of slide bar hypomere, cooperate with own corresponding fixed contact assembly 10, thus make three-phase fixed contact assembly 10 and moving contact assembly 20 be arranged in the Shell of circuit breaker on, in, upper/lower positions.And the movable contact spring 17 on the upper-lower position is distributed in the right side boss 15 of slide bar, and the movable contact spring 17 on the centre position is distributed in the left side boss 15 of slide bar.The moving contact assembly and the fixed contact assembly of each group are arranged with arc-extinguish chamber 21, and arc-extinguish chamber 21 at least one sides are empty, and for movable contact spring 17 activities, arc-extinguish chamber 21 is fixed on the cover plate 11.Slide bar 14 has the flange of two symmetric arrangement at the handing-over bending part, makes it can mold axle sleeve 22, be convenient to the manipulation tripping mechanism in the output pivot pin drive and be connected.Cover plate 11 upper surfaces are furnished with slideway at slide bar, for the slide bar with bending shape cooperates, slideway is divided into two sections, sliding way 23 and glide path 24, sliding way 23 cooperates with the upper end of slide bar 14, and it is carried out guide and limit, and glide path 24 cooperates with the lower end of slide bar 14, it is carried out guide and limit, improved the stability of slide bar action.The involutory screw of center 25 usefulness is fastened on the base 1 then, and the soft rope of lead that connects each moving contact assembly 20 passes center 25, extends in the middle deck of center 25.See Fig. 4; in the middle deck of center 25, be furnished with the bimetal leaf 26 of three-phase; connect copper bar 27 and outlet contact assembly 28; sensitive switch 62; electromagnet 54 parts such as grade; outlet contact assembly 28 trip bolt 30 that includes wiring copper sheathing 29 and be threaded wherein with copper sheathing; cooperate with three-phase output; the number of outlet contact assembly 28 has three; be distributed in the lower surface 31 of center 25; presenting isosceles triangle arranges; being convenient to wiring uses; the copper sheathing 29 that B exports mutually is on the left side; connection copper bar 27 by oneself is connected with the bimetal leaf 26 in centre position; and 26 of the bimetallics in centre position pass through the soft rope of conduction and B moving contact assembly 20 mutually connects; the copper sheathing 29 that C exports mutually is in the centre; it directly is connected with the bimetal leaf 26 of upper/lower positions; the bimetal leaf 26 of upper/lower positions connects with C moving contact assembly 20 mutually by the soft rope of conduction; and the copper sheathing 29 that A exports mutually is on the right side; also the connection copper bar 27 by oneself is connected with the bimetal leaf 26 of last position; the bimetal leaf 26 of last position connects with A moving contact assembly 20 mutually by the soft rope of conduction; each bimetal leaf 26 is that build-in is spacing in the middle deck stopper slot of center 25; each bimetal leaf 26 be directly or indirectly with handle tripping mechanism 31 in dropout pendulum plate 32 conflict or separate cooperation; played the thermal overload protection effect of disconnected lock synchronously, it is spacing in the middle deck elongated slot of center 25 connecting copper bar 27.In the middle installation cavity of the middle deck of center 25, handle tripping mechanism 31 on the plug-in card, see Figure 11-13, handle tripping mechanism 31 and comprise a stroke bar, stir fixture, extension spring, trip dog, the dropout sheet, thread off and put plate, fixed axis, critical pieces such as lazy-tongs seat, adopt two bar structures of drawing, the outside, each stroke bar 33 lower ends has output pivot pin 34, the middle part of drawing bar 33 is fixed on the both sides of trip dog 36 with fixed axis 35, pin 37 passes the top pin-and-hole of drawing bar 33 and trip dog 36 and further is connected, " fall U " shape is stirred fixture 38 tops and is molded and buckle place 39, make two extension springs 40 be pulled in pin 37 and buckle and locate between 39, stir fixture 38 top snappings and be connected with toggle switch 41, trip dog 36 bottoms are rotatably mounted on the both sides side plate 43 of lazy-tongs seat with the rotating shaft 42 of trip dog, opposing sideplates 43 has been formed lazy-tongs seat 44, be provided with at the rear portion of lazy-tongs seat to be fixed with and stir 45 pairs of trip dogs of limit shaft and carry out necessary spacing, accordingly, front portion at the lazy-tongs seat is furnished with dropout sheet 46 rotationally with connecting axle, lockhole 47 is arranged on the dropout sheet, carrying out kayser with the card division 48 on the trip dog cooperates, the outside at dropout sheet 46, side plate 43 with the portion mechanism seat is equipped with rotating dropout pendulum plate 32 by pivot pin 49 and axis hole 50 fit structures, the pendulum plate 32 of threading off is conflicts with dropout sheet 46 or separates cooperation, the side plate 43 of lazy-tongs seat is fixed on the floor of center 25, thereby will handle in the middle deck that tripping mechanism 31 is installed in center 25, see Fig. 9-10, output pivot pin 34 on two slide bars 33 in the manipulation tripping mechanism 31 is by total cabin installation cavity of center, extend downwards, with the axle sleeve 22 on the flange at slide bar 14 crown center positions be to couple together versatilely, certainly handle tripping mechanism and be not limited to this mechanism, can also adopt the trip gear in traditional circuit breaker, this device is a lot, and very similar.Bimetal leaf 26 on the centre position is near the manipulation tripping mechanism, directly conflict and cooperate or separate cooperation with the dropout pendulum plate 32 in handling tripping mechanism, conflict with the dropout pendulum plate 51 of oneself respectively and separate cooperation at upper and lower locational bimetal leaf 26, in present embodiment, the pendulum plate 32 of threading off is spline structures with the pendulum plate 51 of threading off, dropout pendulum plate 51 tops have pivot pin 52, on the axle sleeve 53 of the opening of center 25 inboard faces, dropout pendulum plate 51 is installed in rotation in the middle deck of center 25, thereby the bottom of putting on plate 32 and the dropout pendulum plate 51 of threading off all have the electrician's magnet steel that utilizes electromagnetic field to promote the rotation of dropout pendulum plate.Push pedal 61 is conflicted with the triggering lever on the sensitive switch 62 separately or is separated cooperation on two of upper-lower position pendulum plates of threading off, one end of the sensitive switch 62 on the upper-lower position jointly is connected with an end of the coil of electromagnet 54, the other end is connected on the copper bar of oneself phase voltage separately, the other end of the coil of electromagnet 54 is connected on the copper bar of phase voltage in centre position, constitute the phase loop, electromagnet is arranged on the medium position of Shell of circuit breaker, and the movable end that makes electromagnet 54 is conflicted directly or indirectly on bimetal leaf top, thereby realize that with the dropout pendulum plate 32 in handling tripping mechanism conflict cooperates, and sees Figure 11.Certainly, the sensitive switch 62 on the upper-lower position also can be connected with the coil of electromagnet 54 separately, be connected on separately mutually more respectively between on the loop, the also similar effects that can get, but need to increase an electromagnet has increased cost and installation volume.Present embodiment, middle deck medium position at center 25, near manipulation tripping mechanism 31, electromagnet 54 on the layout, the movable end that makes electromagnet 54 is conflicted directly or indirectly with the dropout pendulum plate 32 in handling tripping mechanism or is separated cooperation, and it is that the movable end of electromagnet 54 moves by the bimetal leaf 26 pendulum plate 32 that promotes again to thread off.Dropout pendulum plate 32 in the centre position is that dropout sheet 46 direct and in the manipulation tripping mechanism cooperates, and makes its rotation.At last, loam cake 55 is combined on the center 25, with involutory screw loam cake 55, center 25 assemblings are coupled together, make toggle switch 41 be exposed at the outside of loam cake 55, the upper and lower of loam cake 55 connects and fixes protection against electric shock cover plate 56, attachment screw is hidden, reset button 57 has been installed in perforate in the middle of the loam cake 55, and reset button 57 lower ends are connected with connector 59 by little spring 58, conflicting with the dropout pendulum plate 32 in handling tripping mechanism and cooperate in the inclined-plane of connector 59, sees Fig. 4-5.
Longitudinal circuit breaker of the present invention uses and operation principle is such, to tangle on the busbar 60 of three-phase by three vertical hooks 2, be fixed on circuit breaker on the switch cubicle by location indication piece 3 and installation switch 4 reliable and stablely, three-phase bus bar 60 is with the inlet wire contact assembly 5 of three-phase line by input, be connected to fixed contact assembly 10 separately, and each moving contact assembly 20 is to be fixed on the slide bar 14 of interlock synchronous piece, the output pivot pin 34 of manipulation tripping mechanism 31 is to drive to be connected with the axle sleeve 22 on the slide bar, when operating personnel pull the toggle switch on the circuit breaker 41, breaker closing is closed, stirring fixture 38 produces under the drive of toggle switch 41 and rotates counterclockwise, because the card division 35 of trip dog 36 is stuck in the lockhole 47 of dropout sheet, make and stir fixture 38 and rotating counterclockwise simultaneously, elongated extension spring 40, stored elastic energy, see Figure 15, at this moment, the bar 33 of drawing that is connected with trip dog is to extend downwards, the output pivot pin 34 drawn on the bar is cooperated with axle sleeve 22 on the slide bar 14, driving slide bar 14 upwards slides, moving contact assembly 10 and fixed contact assembly 10 are conflicted, circuit breaker is in "on" position, see Fig. 8, in the time will resetting circuit breaker, as long as press reset button 57, drive the dropout pendulum plate of handling in the tripping mechanism 32 by connector 59, rotate counterclockwise, promoting dropout sheet 46 also rotates counterclockwise, the card division 35 of trip dog 36 is deviate from from the lockhole 47 of dropout sheet, under the elastic energy effect of extension spring 40, reset rapidly, driving trip dog 36 rotates counterclockwise, a stroke bar 33 is also rotated counterclockwise, see Figure 14, connect by driving, make slide bar 14 to lower slider, moving contact assembly 20 is separated with fixed contact assembly 10, circuit breaker is in disconnected lock state, see Fig. 7, if when middle circuitry phase short circuit, electric current on this phase electric power loop can increase moment, also moment increases electromagnetic field intensity near making sheet metal, electrician's magnet steel of pendulum plate 32 bottoms of threading off is magnetized, and under the electromagnetic field effect that intensity increases, the pendulum plate 32 of threading off produces and rotates counterclockwise, and makes the thread off lockhole 47 of sheet of the card division 35 of trip dog 36, have contact with release, the slide bar 14 that drives the interlock synchronous piece is to lower slider, thereby the circuit breaker three-phase trips simultaneously, obtains the instantaneous protection effect; When under overload conditions; the bimetal leaf 26 in centre position also can heated bending; the dropout pendulum plate 32 that promotes to handle in the tripping mechanism rotates counterclockwise; make the thread off lockhole 47 of sheet of the card division 35 of trip dog 36; have contact with release; the slide bar 14 that drives the interlock synchronous piece trips the circuit breaker three-phase to lower slider simultaneously, obtains the delay protection effect.And respectively there are thrermostatic bimetal-plate 26 structures of upper and lower position at two ends and pendulum plate 51 structures of threading off, when the circuitry phase short circuit of two ends, electric current on this phase electric power loop can increase moment, also moment increases electromagnetic field intensity near making sheet metal, electrician's magnet steel of corresponding dropout pendulum plate 51 bottoms is magnetized, and under the electromagnetic field effect that intensity increases, the pendulum plate 51 of threading off rotates, trigger sensitive switch 62 actions by push pedal 61, electromagnet 54 has constituted loop with middle one between mutually at this like this, cause the solenoid energising, armature is by adhesive, and movable end travels forward, by bimetal leaf 26, bump is handled the dropout pendulum plate 32 in the tripping mechanism indirectly, and the dropout pendulum plate 32 that promotes to handle in the tripping mechanism 31 rotates counterclockwise, and makes the thread off lockhole 47 of sheet of the card division 35 of trip dog 36, have contact with release, the slide bar 14 that drives the interlock synchronous piece is to lower slider, thereby the also tripping operation simultaneously of circuit breaker three-phase obtains the instantaneous protection effect; The delay protection effect is; when transship mutually at two ends; bimetal leaf 26 heatings of this end are crooked; promote corresponding dropout pendulum plate 51 swings; the pendulum plate 51 of threading off rotates; trigger sensitive switch 62 actions by push pedal 61; electromagnet 54 has constituted loop with middle one between mutually at this like this, causes solenoid to switch on, and armature is by adhesive; movable end travels forward; by bimetal leaf 26, bump is handled the dropout pendulum plate 32 in the tripping mechanism indirectly, and the dropout pendulum plate 32 that promotes to handle in the tripping mechanism 31 rotates counterclockwise; make the thread off lockhole 47 of sheet of the card division 35 of trip dog 36; have contact with release, the slide bar 14 that drives the interlock synchronous piece is to lower slider, and the circuit breaker three-phase is tripping operation simultaneously also; play the necessary security protective effect, see Fig. 9-10; 11.
Claims (13)
1. longitudinal circuit breaker, it includes Shell of circuit breaker, be furnished with three groups of inlet wire contact assembly and three groups of outlet contact assemblies that are used for three-phase output that are used for the three-phase input on the Shell of circuit breaker respectively, the three-phase moving contact assembly of three-phase fixed contact assembly and cooperation is set in the Shell of circuit breaker, and drive moving contact assembly and conflict of fixed contact assembly and the interlock synchronous piece that separates, the synchronous piece that it is characterized in that linking is a slide bar, slide bar is divided into epimere and hypomere broken line shape, can be arranged in slidingly back and forth in the spacing slideway in the Shell of circuit breaker, the output pivot pin of the manipulation tripping mechanism on slide bar and the circuit breaker flexibly connects mutually, three-phase moving contact assembly be fixed on successively slide bar on, in, upper/lower positions, accordingly, three-phase fixed contact arrangement of components in Shell of circuit breaker on, in, upper/lower positions.
2. longitudinal circuit breaker according to claim 1 is characterized in that described manipulation tripping mechanism is arranged in the centre position at circuit breaker top, and the flange on the middle part at its output pivot pin and slide bar top flexibly connects.
3. longitudinal circuit breaker according to claim 2 is characterized in that described flexible connection is that axle sleeve is connected with the socket of pivot pin or is movably hinged connection.
4. longitudinal circuit breaker according to claim 3, it is characterized in that described Shell of circuit breaker bottom surface is furnished with three hooks from top to down, the location indication piece that cooperates with three-phase bus bar is installed and switch is installed at hook upside and downside position, the inlet wire contact assembly that is used for three-phase input is arranged in the bottom of Shell of circuit breaker and hook and cooperates with separately busbar, and is used for the lower surface that outlet contact assembly that three-phase exports is arranged in Shell of circuit breaker.
5. according to claim 1 or 2 or 3 or 4 described longitudinal circuit breakers, it is characterized in that the movable contact spring in the described moving contact assembly is to adopt metallic copper spare longitudinally to be fixed on the side of slide bar boss, accordingly, static contact in the fixed contact assembly is to adopt metallic copper spare laterally to be arranged in the housing of circuit breaker, is furnished with on the metallic copper spare on the dynamic and static contact and is coated with the silver sulfide contact.
6. longitudinal circuit breaker according to claim 5 is characterized in that the sheathed arc-extinguish chamber that is fixed with of described moving contact assembly and fixed contact assembly, and at least one side of arc-extinguish chamber is empty, for the movable contact spring activity.
7. longitudinal circuit breaker according to claim 6, it is characterized in that described movable contact spring connects soft rope and is fixed on the bimetal leaf connection that is connected separately on the copper bar by conduction, connecting copper bar separately is connected with the outlet contact assembly separately of three-phase output respectively, copper bar is arranged in the housing of circuit breaker, wherein the bimetal leaf on the centre position is conflicted with the dropout pendulum plate in handling tripping mechanism and is cooperated or separate cooperation, thereby the pendulum plate bottom bit strip of threading off is favourable with electromagnetic field promote to thread off electrician's magnet steel of pendulum plate swing.
8. longitudinal circuit breaker according to claim 7, it is characterized in that described upper and lower locational bimetal leaf respectively be installed in dropout pendulum plate in the Shell of circuit breaker swingably and separate or conflict and cooperate, pendulum plate bottom bit strip is favourable to promote electrician's magnet steel that dropout pendulum plate rotates with electromagnetic field thereby thread off, the push pedal under the pendulum plate of threading off is conflicted with the triggering lever on the sensitive switch separately or is separated cooperation, one end of the sensitive switch on the upper-lower position is connected with magnet spool jointly, the other end is received on the phase voltage outlet copper bar at place more separately, on the outlet copper bar of the phase voltage in the middle of the electromagnet other end is connected on, loop between constituting mutually, electromagnet is arranged on the medium position of Shell of circuit breaker, the movable end of electromagnet is conflicted directly or indirectly thread off in handling tripping mechanism the top of pendulum plate.
9. longitudinal circuit breaker according to claim 8, it is characterized in that described Shell of circuit breaker is divided into the base of lower floor, the center in middle level and the loam cake on upper strata, the superimposed successively housing that connects to form whole strip, handle tripping mechanism, connect copper bar, bimetal leaf, electromagnet, sensitive switch, the outlet connector assembly of putting plate and three-phase output of threading off is arranged in aspect between center and the loam cake, the slide bar slideway, moving contact assembly and fixed contact assembly top, arc-extinguish chamber is arranged in aspect between center and the base, the inlet wire contact assembly of three-phase input, the bottom of fixed contact assembly, location indication piece and installation switch arrangement are in base.
10. longitudinal circuit breaker according to claim 9 it is characterized in that the movable contact spring on the described upper-lower position is distributed in the left and right side of slide bar, and the movable contact spring on the centre position is distributed in the left surface of slide bar.
11. longitudinal circuit breaker according to claim 10, it is characterized in that described manipulation tripping mechanism has the output pivot pin for drawing the bar lower end, the middle part of drawing bar is fixed on the both sides of trip dog with fixed axis, pin passes the top pin-and-hole of drawing bar and trip dog, pin and " fall U " shape are stirred between the place of buckling at fixture top drawn extension spring, stir fixture top snapping and be connected with toggle switch, the trip dog bottom is rotatably mounted on the both sides side plate of lazy-tongs seat with the rotating shaft of trip dog, be provided with to be fixed with at the rear portion of lazy-tongs seat and stir limit shaft, front portion at the lazy-tongs seat is furnished with the dropout sheet rotationally with connecting axle, lockhole on the dropout sheet cooperates with card division on the trip dog, the outside at the dropout sheet, the side plate of lazy-tongs seat is equipped with the dropout pendulum plate that can swing by pivot pin and axis hole fit structure, the pendulum plate of threading off is conflict with the dropout sheet or separates cooperation that the side plate of lazy-tongs seat is fixed in the center.
12. longitudinal circuit breaker according to claim 11 is characterized in that described dropout pendulum plate top has pivot pin, is installed in rotation on the axle sleeve of opening of the inboard face of center.
13. longitudinal circuit breaker according to claim 12, it is characterized in that the middle perforate of described loam cake, reset button has been installed, and the reset button lower end is connected with connector by little spring, conflicts with the dropout pendulum plate in handling tripping mechanism and cooperate in the inclined-plane of connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101602639A CN101465244B (en) | 2007-12-17 | 2007-12-17 | Longitudinal circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101602639A CN101465244B (en) | 2007-12-17 | 2007-12-17 | Longitudinal circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101465244A CN101465244A (en) | 2009-06-24 |
| CN101465244B true CN101465244B (en) | 2011-05-04 |
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ID=40805753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101602639A Expired - Fee Related CN101465244B (en) | 2007-12-17 | 2007-12-17 | Longitudinal circuit breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN101465244B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114927963B (en) * | 2022-05-09 | 2023-04-07 | 苏州明捷精密机械有限公司 | Power distribution cabinet panel with locking mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3921109A (en) * | 1974-06-20 | 1975-11-18 | Westinghouse Electric Corp | Circuit-interrupter |
| CN2534666Y (en) * | 2002-03-14 | 2003-02-05 | 厦门协成实业有限公司 | Middle drive mechanism for longitudinal circuit breaker |
| EP1643519A2 (en) * | 2004-10-01 | 2006-04-05 | Eaton Corporation | Self retaining sliding bar interlock for circuit breaker |
| CN2884498Y (en) * | 2006-04-14 | 2007-03-28 | 上海维埃姆电力科技有限公司 | Advancing mechanism for high-voltage vacuum circuit-breaker |
| CN200986886Y (en) * | 2006-12-08 | 2007-12-05 | 郑士泉 | Permanent magnet control mechanism vacuum circuit breaker |
-
2007
- 2007-12-17 CN CN2007101602639A patent/CN101465244B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3921109A (en) * | 1974-06-20 | 1975-11-18 | Westinghouse Electric Corp | Circuit-interrupter |
| CN2534666Y (en) * | 2002-03-14 | 2003-02-05 | 厦门协成实业有限公司 | Middle drive mechanism for longitudinal circuit breaker |
| EP1643519A2 (en) * | 2004-10-01 | 2006-04-05 | Eaton Corporation | Self retaining sliding bar interlock for circuit breaker |
| CN2884498Y (en) * | 2006-04-14 | 2007-03-28 | 上海维埃姆电力科技有限公司 | Advancing mechanism for high-voltage vacuum circuit-breaker |
| CN200986886Y (en) * | 2006-12-08 | 2007-12-05 | 郑士泉 | Permanent magnet control mechanism vacuum circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101465244A (en) | 2009-06-24 |
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