CN101017723B - The electromagnetic mechanism with the lever and the electro-mechanic product using same - Google Patents
The electromagnetic mechanism with the lever and the electro-mechanic product using same Download PDFInfo
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- CN101017723B CN101017723B CN2006101352732A CN200610135273A CN101017723B CN 101017723 B CN101017723 B CN 101017723B CN 2006101352732 A CN2006101352732 A CN 2006101352732A CN 200610135273 A CN200610135273 A CN 200610135273A CN 101017723 B CN101017723 B CN 101017723B
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Abstract
The invention relates to an electromagnetic mechanism with lever and a mechanical and electrical product adopting the same. The invention overcomes the defects of the electromagnetic mechanism, such as difficult-drove high-capacity switch, limited dragging route and coverage area of effect sphere, short service life of electromechanism and performance not good or the like. The invention comprises a straight-motion short-travel electromagnet, and a drive gear included a lever with lever ratio less than 1 and a transitional connection member. This invention is adequate to hard work, can be used for developing 1.2kA new large- capacity contactor or full-automatic air switch and circuit breaker or the like novel switch electrical equipment, and can be used in closing electromagnet, tripping electromagnet and valve control electromagnet, and can be use as multiple dragging electromagnet: outputs force from some Newtons to thousands Newtons, travels from scores millimeters to 200mm, static saves power over 95%, and 55~80% material.
Description
Technical field:
The present invention relates to a kind of with the electromagnetic mechanism of lever and the electronic product that adopts this electromagnetic mechanism to operate.
Background technology:
Electromagnetic mechanism mainly is made of the mechanism of electromagnet and drive load action.After the electromagnet energising, doing work by the one-way movement of armature adhesive---lead agency overcomes the load counter-force and finishes needed displacement movement.After the outage, mechanism moves under the effect of above-mentioned load counter-force, is returned to energising preceding position and state.The load counter-force is made a concerted effort from elastomeric deformational stress, gravity or boths', also can be other reaction forces.
Press the stroke classification of armature, often working gas gap is ranged the short stroke electromagnet less than the electromagnet of 10mm; With the electromagnet of working gas gap, range long stroke electromagnetic iron (referring to " (motor engineering handbook ") greater than 10mm.The making electromagnet of tractive electromagnet, multiple high-voltage switch gear all belongs to long stroke electromagnetic iron.
Adopt device for switching and some electronic products of existing electromagnetic mechanism operation, its performance and development are subjected to the restriction or the limitation of electromagnetic mechanism very much, have following defective:
1, be typical example with the contactor, the defective that some device for switching exist be described:
In the CJ40 of Direct Action Type Series AC Contactor, be subjected to the product of the restriction 800A specification of electromagnet capacity and 1000A specification have to adopt the electromagnet of 630A specification.Cause out apart from deficiency, not enough, the too high multinomial defective of temperature rise of contact pressure; In order to satisfy the needs of market to the 2000A product, product [as model FYJC5-2000A] that the main contact of two CJ40-1000/3 contactors is together in parallel has in pairs appearred, two cover electromagnet are difficult to synchronously, are difficult to obtain the switch performance of equivalence, and interrupting performance is not good, and difficulty satisfies instructions for use;
In the auto-induction voltage-reduced starting control of alternating current motor, need the contactor of 5 utmost point main contacts, existing product lacks multipole Direct Action Type contactor; In the rotary type A.C. contactor, the performance of multipole product is had a greatly reduced quality: in CJ24 series and the CJ12 series, 4 utmost points of 630A (containing 600A), 5 utmost point products also are subjected to the restriction of electromagnet capacity, have to adopt and the identical electromagnet of CJ12-600A3 utmost point product capacity.So supporting electromagnet makes index mechanical endurance of multipole product drop to 10% of 3 utmost point products.
The defective that the contactor of dc operation exists:
Adopt in the CJ12Z series of DC power supply operation, 600A, the 400A A.C. contactor all uses the DC electromagnet of 400A product.Performance is undesirable, and the nearly 10kg of coil copper consumption is 7 times of alternating electromagnetic iron coil, and electromagnet is also very heavy;
Be used for that high-voltage switch gear closes a floodgate, make the D.C. contactor of electromagnetic operating mechanism energized, contact burns out easily, electric life is also short.
2, the restriction of electromagnetic actuation vibrations generation:
In the appliance switches such as contactor, often several times [" nature " of alternating electromagnet] are in the load counter-force for the dynamic equivalent suction of traditional electrical magnet, and the collision vibrations during adhesive are unavoidable violent.So the neither ideal of the cooperation of electromagnet suction characteristic and load spring load characteristic is optimized to cooperate especially and is extravagantly hoped.Traditional product all adopts the mode of soft connection that electromagnet and electromagnetic mechanism are installed, and be unable to do without the buffer system of spring or elastic rubber parts, influences the destructive power in performance and life-span with absorbing vibration energy, minimizing.Vibrations, also cause easily the main contact of device for switching produce " secondary vibration " [main contact connect when the issuable vibration first time be " once vibration ", when once vibration took place, electromagnet was not also finished the adhesive campaign.Electromagnet is finished when the adhesive, causes that toward the contact meeting vibrate i.e. " secondary vibration " second time of main contact.] if secondary vibration causes that main contact separates, and will produce electric arc, ablation contact so that contact melting welding, is unfavorable for the reliable and life-span of device for switching.
3, the restriction of electromagnet capacity, electromagnet stroke and the limit of exerting oneself:
Existing electromagnet lack for a short time exert oneself, the electromagnet of big stroke [as 50N, 50mm];
Existing electromagnet is subjected to the restriction of method for designing, [exerting oneself] x[stroke of long stroke tractive electromagnet] also do not surpass 1200Nx80mm's.Because there is capacity limit in electromagnet, surpass certain capacity, performance and technical-economic index [such as: frequency of operation, mechanical endurance, temperature rise, economic weight] just begin to worsen, so that can't work, this is the result that traditional electrical magnet multinomial performance mutual restriction and contradiction are difficult to balance.
The performance of above-mentioned restriction on high-voltage switch gear:
The making electromagnet that is used for high-voltage switch gear is because efficient is far below the efficient of 8%[steam locomotive], so need very big combined floodgate power.When operating voltage was 220v, switching current was at least also wanted 60 to 70 ampere, and big reaches 160 amperes.Main force's power distribution station must be equipped with jumbo batteries.
4, Related products self such as existing electromagnet and electromagnetic mechanism exist following mistaken ideas or limitation:
Electromagnetic mechanism adopts " shouldering the bar ratio " of many times:
In shouldering linkage, power arm length and resistance arm length ratio are called " shoulder bar than ", in electromagnetic mechanism, i.e. and the ratio of the impulse stroke of armature and mechanism's delivery stroke.
When prior art has big power output to requiring operating mechanism, adopt the less tractive electromagnet of exerting oneself, by shouldering the amplification of linkage, increasing is exerted oneself.Be example with the brake that uses tractive electromagnet to make operational power, it shoulders that the bar ratio reaches is 3 to 10 so that bigger, and this is the technology mistaken ideas.
5, the restriction of electromagnetic compatibility problem:
In the existing products such as A.C. contactor, when electromagnet is implemented energy-saving run, often there is the not good problem of Electro Magnetic Compatibility.Exist tolerance overvoltage impact capacity low, under electromagnetic interference, control circuit damages easily.For A.C. contactor, also there is the problem that reduces opening velocity, be unfavorable for arc extinguishing and electric life, also influence is produced.
Summary of the invention:
The object of the invention is to overcome the above-mentioned defective of prior art, provide a kind of reliable, efficient, the excellent life-span of performance is long, and the electromagnetic mechanism of the band lever that reduces significantly of complete machine weight and adopt this electromagnetic mechanism drive electrical mechanical product.
Technical scheme of the present invention is as follows:
1, electromagnetic mechanism:
Comprise direct drive type electro magnet and transmission mechanism, described electromagnet mainly is made of the fixed core that comprises coil, moving iron core and electric control system, and it is characterized in that: described electromagnet is the short stroke electromagnet; The leverage and the transition link that driven by moving core portion, between moving core portion and leverage of (that is: initiatively the arm of force less than by power arm) constitutes transmission mechanism less than 1 by lever ratio, and an end of transition link is connected with leverage.Described moving core portion mainly comprises moving iron core and push rod, when push rod is not exerted oneself, plays the slide-and-guide effect.
Electromagnetic mechanism of the present invention has following advantage:
1. with the contactor example of device for switching, replace the electromagnetic mechanism one-tenth of existing CJ12-600 A.C. contactor with electromagnetic mechanism of the present invention after, can make frequency of operation from bring up to for 600 times/hour (900 to 1800) inferior/hour, also can frequent operation when ambient temperature is 55 ℃, opening of main contact apart from multiplicable, the dynamo-electric life-span prolongs, static power consumption less than 3 watts, dynamically economize on electricity exceedes 50%, and electromagnetic mechanism can be saved 80% enamelled wire and 80% iron chi material approximately.To the Direct Action Type contactor, also desirable similar effects.And compare with the existing CJ12Z-600 of DC power supply operation that adopts, coil varnish envelope curve consumption more can reduce to 6%.
2. adopt two-stage or multi-grade lever, lever ratio can reach [1/10] so that more greatly different ratio---export bigger stroke.Electromagnetic mechanism of the present invention can be used as the long stroke tractive electromagnet of tension type or push type: [several newton are to several thousand newton] exert oneself X[tens m to 200mm], all can be competent at important task affair duty, the durable effect in copper and iron saving is remarkable equally.
3. the present invention can be used for the upgrading of various interchanges, D.C. contactor, the high-performance contactor of using that can release various capacity 1 to 6 utmost points, the product of 2KA level in addition.The durable effect of high-powered energy-saving material-saving is all arranged;
Electromagnetic mechanism of the present invention also can be used for multiple device for switching such as automatic air-break switch, circuit breaker, can be used for the making electromagnet of high-voltage switch gear, trip electromagnet, brake and the electromagnetically operated valve etc. of device for switching.
Description of drawings:
Fig. 1 is the structural representation of a kind of tension type electromagnetic mechanism in the embodiment of the invention 1.
Fig. 2 is the structural representation that the electromagnetic mechanism among Fig. 1 is applied to high-capacity direct dynamic formula contactor.
Fig. 3 is that the cuing open of high-capacity direct dynamic formula contactor of the embodiment of the invention 1 released schematic diagram.
Fig. 4 is the structural representation of the push type electromagnetic mechanism of the embodiment of the invention 2.
Fig. 5 is the another kind of structural representation of electromagnetic mechanism in high-capacity direct dynamic formula contactor of the embodiment of the invention 3.
Fig. 6 is the hydraulicdriven electromagnetic mechanism structural representation of the employing of the embodiment of the invention 4.
The control circuit of Fig. 7 when to be the embodiment of the invention 5 about described electric control system adopt ac control power supply.
The control circuit of Fig. 8 when to be the embodiment of the invention 6 about described electric control system adopt DC control supply.
Fig. 9 is the structural representation that the electromagnetic mechanism of the embodiment of the invention 7 is applied to the rotary type contactor.
Figure 10 is the structural representation of the electromagnetic mechanism of the embodiment of the invention 8 as the long stroke tractive electromagnet of tension type.
Figure 11 is the structural representation of the electromagnetic mechanism of the embodiment of the invention 9 as the long stroke tractive electromagnet of push type.
Figure 12 is the structural representation that the electromagnetic mechanism of the embodiment of the invention 10 is applied to brake.
Figure 13 is the another kind of structural representation that the electromagnetic mechanism of the embodiment of the invention 11 is applied to brake
Label declaration:
1 terminals, 2 insulated chassis, 3 fixed contacts, 4 moving contacts, 5 framves that are slidingly installed, 6 arc-extinguish chambers, 7 shape of a saddle mounting panels, the installing hole of 8 auxiliary contact boxes, the installing hole of 9 contactors;
11 fixed cores, 12 is moving unshakable in one's determination, 13 thrust push rods, 14 plastic hoops, 15 bearing pin bearings, 16 runners, the base plate of 17 casings, 18 tank walls, 19 transition loose joint plates, the mounting base of 20 electromagnet;
21 curved boom levers, 22 bearing pins, 23 roller shafts, 24 rollers, 25 connecting axles, 26 braces, 27 power output bearing pin, the curved boom lever of 28 attracted positions, 29 machine leaders;
The Uac ac control power supply, QK displacement diverter switch, D1 rectifying tube, D2 rectifying tube, D3 rectifying tube, W1 coil, Jr relay, Jr1 relay contact, Rf1 resistance, C1 electric capacity, Rcf discharge resistance;
The D4 rectifying tube, D5 rectifying tube, D6 rectifying tube, Jr2 relay contact, Rf2 resistance, W2 coil, OVP overvoltage protection link;
The Udc DC control supply, the QKd diverter switch, the Wd coil, the MD motor, the RC capacitance-resistance absorbs link, Jrd relay, Rfd resistance, Dd rectifying tube, the overvoltage protection link of OVPd direct current;
31 big hydraulic cylinders, 32 big pistons, 33 hydraulic mediums, 34 small cylinders, 35 valve pistons, 36 valve piston push rods;
41 ends of incoming cables, 42 insulating frames, 43 mounting bar seats, 44 leading-out terminals, 45 rotation strip seats, 46 straight-arm levers, the mount pad of 47 seats, 48 moving contacts, 49 fixed contacts, 50 arc-extinguish chambers;
51 coils 52, sealing cover, 53 automatically controlled connectors, the spacing rubber cushion of 54 separating brakes, 55 mounting interface base plates, 56 installing web plates;
61 straight-arm levers, 62 one-levels connect bearing pin, 63 connecting plates, 64 secondarys connect bearing pin, 65 secondary curved boom levers, 66 second lever bearing pins, 67 second lever bearings, 68 upper pins, 69 electromagnetic mechanisms drive the interface of load, 70 long connecting plates;
71 pivot pins, 72 push rod rollers, 73 electric-controlled boxes, 74 straight-arm bars;
The left brake arm parts of 81 brakes, the installing rack of 82 electromagnetic mechanisms, 83 brake scotch parts, 84 braked wheels, 85 right brake arms, the framework of 86 tripping springs, 87 push rods that declutch, 88 pressure are adjusted plate, 89 tripping springs, 90 secondary springs that declutch;
Embodiment:
Fig. 1-13 shows electromagnetic mechanism of the present invention and related application.Electromagnetic mechanism comprises direct drive type electro magnet and transmission mechanism.Described direct drive type electro magnet mainly is made of fixed core, moving iron core and electric control system, and electromagnet adopts mild steel or electrical sheet or silicon steel manufacturing, and it is characterized in that: described direct drive type electro magnet is the short stroke electromagnet; Transmission mechanism is made of less than 1 leverage with by moving transition link that drive, between moving iron core and leverage unshakable in one's determination lever ratio; One end of transition link is connected with leverage, and described transition link is used to dissolve the interference that is taken place between moving rectilinear motion unshakable in one's determination and the leverage movement in a curve.To move short stroke displacement unshakable in one's determination by the transition link and drag the long stroke motion of load work by leverage.
Described leverage is connected and composed by one-level or the lever more than the one-level, and lever can be that the straight-arm lever also can be the curved boom lever; Described leverage also can be made of pulley system or gear mechanism or hydraulic mechanism.
Described transition link can be a roller, also can be transition loose joint plate, or lever transmission or hydraulic drive or gear drive or pulley transmission.
According to described curved boom lever install towards difference and the difference of curved boom lever angle, can produce push type or tension type electromagnetic mechanism, and go out the different electromagnetic mechanism of force direction.
Electromagnetic mechanism of the present invention can be used for substituting electromagnet or the electromagnetic mechanism in the existing electronic product.
Embodiment 1:
Fig. 1 shows a kind of electromagnetic mechanism of the present invention.Fig. 2 shows the present invention and uses Fig. 1 electromagnetic mechanism, is applied to the Direct Action Type device for switching, is the structural representation of typical example with a kind of high-capacity direct dynamic formula contactor, and the upper limit capacity of contactor can reach 2KA.Electromagnetic mechanism among Fig. 2 is directly installed in the totally-enclosed casing of thin plate manufacturing by securing members such as bearing pin, bolts, and the installation of electromagnetic mechanism need not bolster.
To shown in Figure 4, on the moving iron core 12 push rod 13 is housed as Fig. 1.Moving unshakable in one's determination 12 are enclosed within the columnar fixed core 11 in the mode that is slidingly matched.The lead-out wire of electromagnet coil passes plastic hoop 14 and draws.The bearing pin bearing 15 of a shape and the runners 16 of door shape are arranged at the bottom of fixed core 11, on the runners 16 installing hole are arranged.Described lever is the curved boom lever 21 that the change that is positioned at the electromagnet both sides goes out force direction; Described excessive link is by push rod 13 direct acting rollers 24.The galianconism end of curved boom lever 21 is equipped with a roller shaft 23, and a roller 24 is housed on the roller shaft 23, and bearing pin 22 passes a pair of curved boom lever 21 and bearing pin bearing 15, and curved boom lever 21 can rotate around bearing pin 22, constitutes the one-level lever transmission mechanism; The output of push rod 13 acts on the roller 24; The long arm end of curved boom lever 21 connects brace 26 by connecting axle 25.The other end of brace 26 is equipped with power output bearing pin 27.
Among Fig. 1, electromagnet is fixed on the mounting base 20 of electromagnet.
In the Direct Action Type contactor shown in Fig. 2, Fig. 3, electromagnet is to install like this: the casing that electromagnet is housed is contained in the back side one side of insulated chassis 2; There is the bearing pin bearing 15 of a shape bottom of fixed core 11 and the runners 16 of the door shape of installing hole is arranged; Bearing pin 22 is worn bearing pin bearing 15, and thread has been attacked at bearing pin 22 two ends, and the runners 16 usefulness nuts of bearing pin 22 and electromagnet are fixed on the tank wall 18 that the thin plate of mild-steel sheet or other materials makes; Certainly, electromagnet also can change and be directly installed on the base plate 17.Tank wall 18 can not opened the air port, and the base plate 17 of tank wall 18 and casing constitutes a dust seal closure.Front one side of insulated chassis 2 is installed fixed contact 3; The power output bearing pin 27 of left part and electromagnetic mechanism of frame 5 of being slidingly installed is connected, the frame 5 that is slidingly installed slidably partly pass the space that insulated chassis 2 enters fixed contact 3 and moving contact 4 places; The moving contact 4 that moves horizontally is equipped with on the be slidingly installed right side of frame 5, moving unshakable in one's determination 11 the central axis of electromagnet is parallel to the insulation domain, the direction of motion of moving iron core 11 is parallel to the plane of insulated chassis 2, and promptly moving unshakable in one's determination 11 the direction of motion is vertical mutually with the direction of motion of moving contact 4 or approaching mutual vertical.This vertical or orthogonal relation is to realize by working the curved boom lever 21 that changes the directive effect of exerting oneself.
Mechanism among Fig. 1, Fig. 2 and Fig. 3 is action like this: the moving iron core 12 of the electromagnet of energising adhesive promotes roller 24 by thrust push rod 13, make curved boom lever 21 do and rotate counterclockwise, thereby make brace 26 spur the moving contact system translation of contactors around bearing pin 22.After electromagnetic actuation put in place, curved boom lever 21 turned to attracted position (seeing Fig. 2, the curved boom lever 28 of attracted position), and contactor is finished closing operation.
Design among Fig. 2 is to be prototype and the transformation that updated with CJ40-1000 (and CJ20-630) A.C. contactor, design stable state suction is the miniaturisation high-performance electromagnet [prior art] of 2600Nf, lever ratio is 0.33, main contact is opened distance and is doubled, and the rated current capacity of contactor is 1000 amperes.For the ease of understanding, Fig. 2 makes a variation to some extent---and electromagnetic mechanism and casing among Fig. 2 be that datum level has rotated 90 and spends with the base plate 17 of casing.Transformed among the embodiment of prototype with CJ20 series or CJ40 series, electromagnetic mechanism should instead turn 90 degrees.Entity after the counter-rotating cuts open as Fig. 3 solid and to release shown in the figure.
In conjunction with Fig. 1 and Fig. 2, Fig. 3 has expressed the primary structure of contactor, an installing hole 8 of the auxiliary contact boxes that also drawn among Fig. 3 and an installing hole 9 of contactor.Auxiliary contact box and tripping spring have been omitted among Fig. 3.
Direct Action Type contactor with embodiment 1 is an example, in device for switching, can be by changing the curved boom lever 21 that force direction, make the direction of motion of the moving direction of motion unshakable in one's determination of electromagnet and switch main contact vertical mutually or near vertically, help the raising of switch performance.
Contactor among Fig. 2, Fig. 3, the equivalence of electromagnetic mechanism output is exerted oneself, be about 1.5 times of the total contact pressure of CJ40-1000, but still less than the dynamic equivalent suction of CJ20-630 alternating electromagnet the power of dynamic load [drag], add automatically controlled mode, not only can carry out closing operation fast, reposefully, and can realize that the optimization of suction counter-force cooperates, the cylindrical shape fixed core is of a size of φ 110X85; That frequency of operation can reach (900 to 1800) is inferior/hour, static power consumption is less than 3 watts, and when ambient temperature was 55 ℃, electromagnetic mechanism also can frequent operation.This structure helps improving arc extinction performance and electric life; After main contact pressure fills up, can thoroughly eliminate the too high inadequate natural endowment of former contact temperature rise; Enclosed electromagnetic mechanism is beneficial to the expansion scope of application.To the assembling of electromagnetic mechanism, adopt securing member directly to fix and also can obviously alleviate the vibrations of closing a floodgate.In addition, because the weight of electromagnetic system reduces to original 30% to 38%, the center of gravity of whole contactor is shifted to the insulated chassis 2 that the fixed contact system is installed, so the contactor installed surface can be changed to the bottom of insulated chassis 2, Fig. 3 shows an installing hole 9 of contactor.
Use this scheme, can produce various capacity 1 to 6 utmost points high-performance Direct Action Type contactor, can release the premium quality product of 2KA.This technology is also to be used for the update of various capacity D.C. contactors.
As power, but his usefulness also of the electromagnetic mechanism among Fig. 1 can be deleted brace 26 and bearing pin 27 in the use.
Embodiment 2:
As shown in Figure 4, the electromagnet among Fig. 1, Fig. 2 is overturn 180 ° together with curved boom lever 21, become the layout of Fig. 4, just be varied to a kind of push type electromagnetic mechanism.
Equally, electromagnetic mechanism of the present invention is easy to shape, structure by flexible transmission mechanism and changes and force direction when the tractive electromagnet, will further describe in embodiment 8,9.
Embodiment 3:
As shown in Figure 5, as the equivalent substitution of the kind of drive, can be with the roller among the embodiment 1 24, an end that makes present embodiment into connects moving transition loose joint plate 19 unshakable in one's determination orders about 21 rotations of curved boom lever: exerting oneself of electromagnet changed by moving 12 direct pulls unshakable in one's determination.As shown in Figure 5, the end of moving 12 lower ends unshakable in one's determination connects an end [upper end among the figure] of transition loose joint plate 19, connects the galianconism end of curved boom lever 21 at the other end of transition loose joint plate 19, and other structure is identical with embodiment 1.
The bearing pin 22 of curved boom lever 21 among Fig. 5 is installed on the casing by securing member; Present embodiment also can rotate curved boom lever 21 around bearing pin 22 by the transition loose joint plate 19 of moving core end; And replace the brace 26 of Fig. 1 in Fig. 3 with machine leader 29, the frame 5 that is slidingly installed of pulling contactor moving contact system is so operated contactor.At Fig. 1 in Fig. 5, during the electromagnet action, push rod is reciprocating, movement locus is straight line, and the movement locus of curved boom lever 21 upper rollers 24 central axis is camber lines, has dissolved displacement interferometer between straight path and the arc trajectory by the rotation of roller 24 just; In like manner, in Fig. 5, then separate corresponding displacement interferometer by 19 two axiation of transition loose joint plate.The mode of Fig. 1 or Fig. 5 may be used to manufacturing and designing of novel air switch, among other embodiment, also can adopt described equivalent substitution.
Electromagnetic mechanism of the present invention can replace multiple valve control electromagnet, or the update of multiple electromagnetically operated valve.
But the control power supply of electromagnetic mechanism of the present invention is AC/DC all.
In order effectively to improve the performance of overvoltage and electromagnetic compatibility, the present invention can adopt new control circuit to constitute automatically controlled part of the present invention.
Embodiment 4:
Fig. 6 is the structural representation of the electromagnetic mechanism of employing hydraulic gear.The moving unshakable in one's determination push rod 13 of electromagnet links to each other with big piston 32 in the big hydraulic cylinder 31, and big hydraulic cylinder 31 is connected with small cylinder 34, and small cylinder 34 interior valve pistons 35 are connected with the valve piston push rod 36 of outputting power.Electromagnet promotes big piston 32 by push rod 13, and big piston 32 promotes valve piston 35 by hydraulic medium 33, at last by valve piston push rod 36 power outputs and stroke.The area ratio of big valve piston is n, and lever ratio is that the delivery stroke of 1/n valve piston push rod 36 is exactly n a times of electromagnet stroke.Hydraulicdriven advantage is compact conformation, in case hidden danger is that leakage of oil is with regard to cisco unity malfunction.
Embodiment 5:
Fig. 7 is a kind of circuit theory diagrams of electric control system of the present invention, and it adopts the control circuit of two group of three pipe rectification, and every coil all is furnished with three rectifying tubes, is called for short three pipe circuit.As shown in Figure 7, around the wiring of first coil W1, the node serial number 003 behind the displacement diverter switch QK[Qk that successively connects normally closed between the end of incoming cables 001 and 002 of ac control power supply Uac], the node serial number 005 behind the positive half wave rectifying tube D1[D1], the node serial number 006 behind the electromagnet coil W1[W1], play the node serial number 004 behind the relay contact Jr1[Jr1 of rapid release effect] and rectifying tube D2.Also be connected to the relay J r of rapid release effect between the power line 001 and 002, Jr1 and Jr2 are its normally opened contacts.The synchronous break-make of control power supply of relay J r and electromagnet.Parallel connection the ined succession discharge resistance Rcf of capacitor C 1 and high value of step-down metering function in diverter switch QK two ends in case of necessity, can also add in capacitor C 1 branch road and go here and there the resistance of a low resistance.As required, the RC time constant of Rcf and C1 is desirable 0.05 to 0.5 second.The relay contact Jr1 two ends parallel connection resistance R _ f 1 of ining succession, resistance value is 5 to 10 times of coil dc resistance.Also inverse parallel has a rectifying tube D3 between two rectifying tube D1, D2, and when Jr1 was in closure state, D3 had been the afterflow passage of coil current, and freewheel current can improve the excitatory of electromagnet and adhesive efficient.When bearing half-wave, D1 and D2 all play the blocking-up reverse current.Surge in the face of electrical network may occur even electric breakdown phenomena appears in D1, D2, because W1 is clipped in therebetween, can not produce short circuit current or overcurrent, also is not easy to produce thermal breakdown, so D1, D2 just are not easy to damage; D3 is no more than one, 200 millisecond in the accumulative total of each operational cycle conduction time, itself is not easy heating.The reliability of three pipe circuit is apparently higher than the halfwave rectifier or the bridge rectifier of routine;
As shown in Figure 7, around the wiring of second coil W2, rectifying tube D5, D6, D4 and resistance R _ f 2, the connection of relay contact Jr2 and W1's is similar.Difference is: corresponding rectifying tube has been put upside down wiring polarity all according to the principle of antithesis.General characteristic is that the stack of W1, two coils of W2 is equivalent to the coil of a full-wave rectification, manages valve tube circuit for two group three and constitutes the exciting circuit that is equivalent to " double half-wave rectification ".
In order to improve Electro Magnetic Compatibility, can be in the control power supply overvoltage protection link OVP in the parallel connection.
The circuit working principle is illustrated in down:
When electromagnet began to switch on adhesive, diverter switch QK was in closure state, and 008 node and 006 node are also by the Jr1 short circuit, and rectifying tube D1 and D2 only allow the electric current of positive half wave to flow through coil W1; Negative half-wave current then can only flow through W2.Because the QK closure, coil W1 can obtain enough encouraging by force, makes electromagnetic actuation;
Electromagnet is finished the adhesive campaign eve, and QK disconnects.After QK disconnected, the freewheel current in D3 and W1, D6 and W2 guaranteed that electromagnet still has enough exciting curents, makes electromagnet finish the adhesive campaign fast; After QK disconnected, capacitor C 1 was just devoted oneself to work, and C1 plays the step-down metering function, and most of pressure drop all drops on the C1.Like this, the exciting curent of coil falls very soon, encourages below 10% of electric current in the time of can being reduced to starting by force.At control voltage when being 380/220V, the capacitance current value generally between tens milliamperes to the hundreds of milliampere, this electric current is equivalent to the equivalent exciting curent of electromagnet coil.The positive half wave electric current that flows through electric capacity enters coil W1, and negative half-wave current enters W2.The exciting curent of adhesive is very little because coil is kept, and the pressure drop of coil W1 and W2 often has only tens volts to tens volts, and the static power consumption of electromagnet is very few;
Behind the control power cut-off, the contact Jr1 and the Jr2 of relay in time disconnect, and make the electromagnet rapid release.
Control circuit when Fig. 8 adopts the DC power supply operation for electromagnetic mechanism.In Fig. 8, the motor MD of select tape cooling fan is as decompression current-limiting element, and the steady-state current of its current capacity and electromagnet coil Wd mates.This measure is anti-interference, anti overvoltage impacts and the electromagnetic compatibility aspect is better than adopting the decompression mode of electronic switch power.Cooling fan can be used for the ventilation cooling of switch contact or other heat generating components.Circuit connection is as follows:
Two end of incoming cables 2001[positive poles of DC control supply Udc] and the 2002[negative pole] between node serial number 2003 after successively connecting displacement diverter switch QKd[QKd normally closed], the node serial number 2004 behind the electromagnet coil Wd[Wd] and play the relay contact Jrd of rapid release effect.Be connected to relay J rd between the power line 2001 and 2002;
Parallel connection the ined succession motor MD of step-down metering function and capacitance-resistance in diverter switch QKd two ends absorbs link RC.In case of necessity, also can in the MD branch road, add low resistance resistance of string.The relay contact Jrd two ends parallel connection resistance R _ f d that ins succession, resistance value is 5 to 10 times of coil dc resistance.Inverse parallel has a rectifying tube Dd between the right-hand member [node serial number 2003] of diverter switch QKd and power cathode [node serial number 2002].Electromagnet is finished the adhesive campaign eve, and after QKd disconnected, Dd provided the afterflow passage of coil current.In order to improve Electro Magnetic Compatibility, can be in the control power supply overvoltage protection link OVPd of direct current in the parallel connection.The mode of this use fan motor step-down current limliting also can be used for AC control circuit---and the motor M D with the band cooling fan replaces capacitor C 1.
The operation principle of circuit is similar to the circuit that adopts ac control power supply.Being different from what exchange control is that the electric power polarity of this DC control circuit can not reverse graft.If need not the rapid release function, cancel corresponding relays and discharge resistance among Fig. 7, Fig. 8.
Embodiment 7
Fig. 9 shows a kind of rotary switch electrical equipment that adopts electromagnetic mechanism of the present invention, is typical example with the rotary type A.C. contactor.This example is that prototype is transformed with CJ12 series.Primary structure is, by the electromagnet of band lever transmission mechanism, be contained in the fixed contact system on insulating frame and the mounting bar seat, moving contact system and the five groups of parts of arc-extinguish chamber that are contained on the rotatable bar seat constitute.The moving contact system with the mode of rotating close, separating brake.
Identical with the CJ12 structure is: the end of incoming cables 41 of contactor of the present invention, leading-out terminal 44 and fixed contact 49 systems also all are installed on the insulating frame 42 [A, B, three insulating frames of C three-phase are all identical, all are contained on the mounting bar seat 43]; The system of moving contact 48 is contained on the rotation strip seat 45.
Different with the CJ12 structure is: the fixed core 11 of electromagnet installs on the mounting bar seat 43 by mounting interface base plate 55 and installing web plate 56.The mounting interface base plate 55 of electromagnet and installing web plate 56 can constitute parts with the fixed core 11 of welding manner and electromagnet.Electrical wiring is received electric control system by automatically controlled connector 53; The bottom of fixed core 11 is added with the spacing rubber cushion 54 of separating brake.Be inlaid with plastic hoop 14 outside the fixed core 11, sealing cover 52 is housed on the plastic hoop 14, electromagnet is implemented totally-enclosed protection.Having moving unshakable in one's determination 12 of thrust push rod 13 is sleeved in the fixed core 11 in the mode that is slidingly matched;
In addition, in design, axis with rotation strip seat 45 is the rotational coordinates initial point, because straight-arm lever 46 is about 90 degree with the angle of moving contact 48, like this, the direction that electromagnet moves up and down and moving contact 48 are vertical mutually or approaching orthogonal relation near the direction of horizontal movement, help improving the electrical property and the electric life of device for switching.
On the rotation strip seat 45 of contactor, straight-arm lever 46 is housed; Roller shaft 23 and roller 24 are housed on the straight-arm lever 46.Roller 24 can make straight-arm lever 46 drive rotation strip seat 45 and rotate under the promotion of the thrust push rod 13 of electromagnet.In addition, can use instead the thin plate bending forming, shape replaces former solid steel bar seat as the mounting bar seat 43 of the rectangle shaped steel that is penetrated with open slot.
After the electromagnet energising, moving unshakable in one's determination 12 the suction-combining force acts on roller 24 and straight-arm lever 46 by thrust push rod 13, so orders about rotation strip seat 45 and rotates, and moving contact 48 and fixed contact 49 are connected, and finishes the closing operation of contactor.After the electromagnet outage, contactor separating brake under the counter-force effect, behind the separating brake, the displacement amplitude of roller 24 is subjected to the spacing of the spacing rubber cushion 54 of separating brake, thus the separating brake of restriction and assurance contactor puts in place.
Present embodiment serves as a prototype of transforming object with the CJ12-600 A.C. contactor, and design stable state suction is the miniaturisation high-performance electromagnet of 1130Nf, and lever ratio is 0.45.Electromagnet fixed core 11 is of a size of Φ (75 to 80) X (82 to 90) mm, the opening apart from doubling of main contact, and the assembling of electromagnetic mechanism all adopts securing member directly fixing and need not the buffer unit of traditional product; Frequency of operation design load hourly can be set between 900 times to 1800 times, and static power consumption is less than 3 watts, and electromagnetic mechanism also can frequent operation when ambient temperature is 55 ℃.Effect is similar to aforementioned Direct Action Type contactor.If with the CJ12Z-600 comparison of direct solenoid mechanism operation, the copper consumption of coil is less than 6%, electromagnetic mechanism can save 75% with the iron amount.Use this scheme, can produce the rotary type contactor of various capacity 1 to-6 very high performances, also can release the premium quality product of 1KA, 2KA.They all have the durable effect of high power saving metal material and energy.
Also can illustrate because electromagnetic mechanism of the present invention has the operation rapidity by embodiment 7 and embodiment 1, the strength that the clearance between open contacts of device for switching doubles in addition, these two kinds of basic structure modes can be used for developing the multiple novel device for switching that comprises full-automatic air switch and low-voltage circuit breaker.
Embodiment 8
Figure 10 adopts second lever to do the solenoid mechanism for implementing example of transmission mechanism, as the long stroke tractive electromagnet of tension type.Electromagnet is made of moving unshakable in one's determination 12 of fixed core 11, band thrust push rod 13; Constitute the transmission mechanism of two-stage lever by straight-arm bar bar 61, curved boom lever 65, connecting plate 63, bearing pin bearing 15 and second lever bearing 67; Electromagnet is contained on the mounting base 20 of electromagnet; On the mounting base 20 of electromagnet and the fixed core 11 bearing pin bearing 15 is housed, second lever bearing 67 is equipped with on the top of fixed core 11; Roller 24 is housed on the straight-arm lever 61, and thrust push rod 13 acts on the roller 24; Straight-arm lever 61 is installed on the bearing pin bearing 15 by bearing pin 22.The upper end of straight-arm lever 61 connects bearing pin 62 by one-level and links to each other with brace 63.Brace 63 connects bearing pin 64 by secondary and connects secondary curved boom lever 65.Secondary curved boom lever 65 is contained on the second lever bearing 67 by second lever bearing pin 66.The upper end of secondary curved boom lever 65 is by the interface 69 of upper pin 68 connecting band dynamic loads.Entire mechanism can add outer cover [default among the figure].
After the electromagnet energising adhesive, the interface 69 that straight-arm lever 61, secondary curved boom lever 65 drive load is displaced to accordingly, uses the position of expressing with the dashed boxes of shape; After the outage, under the counter-force effect, revert on the original solid line position.
The lever ratio of present embodiment two-stage lever is 0.068, and the lower range of lever ratio also can be extended downwards.If desired, can be increased to three grades of lever transmissions.
As shown in figure 11, present embodiment is the electromagnetic mechanism as the long stroke tractive electromagnet of push type, and it and Figure 10 main distinction structurally only is: the length that changes the mounting means and the change connecting plate 63 of second lever bearing 67.Specify as follows:
The installation that changes second lever bearing 67 towards, change the connecting plate among Figure 10 63 the long connecting plate 70 of Figure 11 into, just become the electromagnetic mechanism of push type tractive electromagnet.This electromagnetic mechanism can be used as the combined floodgate power of some high-voltage switch gears
Among Figure 11, can use the electromagnet of a 15000Nf thrust, the external diameter of cylinder type fixed core 71 is 200 to 210mm, and the power x stroke of output is 1000Nfx100mm; When operating power was direct current 220V, the starting attract current of electromagnet was less than 30A.If lever ratio is become 0.117, the power x stroke of output is 1500Nfx60mm, and the CD series making electromagnet of exerting oneself and being used for the high-voltage switch gear closing operation greater than existing, power demand are less than original 25%; The contact transfer time of this electromagnet is short, has fine rapidity.The starting current of electromagnetic mechanism of the present invention is little, frequency of operation [but design parameter] can reach 600 to 1200 times/hour, also has advantages such as static power consumptive province, volume is little, the life-span is long, the scope of application is big.
The electromagnetic mechanism of Figure 10, Figure 11 can be used for the update of multiple tractive electromagnet.Change the electromagnet parameter, change the lever parameter, can release also that difference is exerted oneself, different stroke purposes tractive electromagnet widely: [several newton are to several thousand newton] the X stroke [tens mm arrive (100～200) mm] of exerting oneself.
Embodiment 10
Figure 12 is the crane brake that drives with electromagnetic mechanism of the present invention, and relevant structure is as follows:
Electromagnetic mechanism is made of curved boom lever 21 grades of electromagnet and band roller.Electromagnet moves iron core 12, thrust push rod 13 mainly by fixed core 11.Electromagnet is contained in the top of brake: be connected to the installation frame 82 of electromagnetic mechanism on the left brake arm parts 81 of brake, electromagnet is contained on this framework 82; The bearing pin 22 that curved boom lever 21 rotates is housed on this framework 82, passes through the framework 87 of pivot pin 71 connection tripping springs in addition.The long arm end of curved boom lever 21 acts on the push rod 87 that declutches that brake is declutched.In case of necessity, can below curved boom lever 21, load onto push rod roller 72, promote to declutch push rod 87 again by roller 72.Brake is by the pressure of tripping spring 89, holding the declutch right-hand member of push rod 87 of braked wheel 84[tightly by a pair of brake scotch 83 is fixed on the right brake arm 85 by nut, the base plate of framework 86 right-hand members of the right-hand member pushing tow tripping spring of tripping spring 89, the left end pushing tow of spring 89 is adjusted plate 88 by the pressure that screw thread is contained on the push rod 87 that declutches.Final effect is equivalent to be strained by spring 89 between left side brake arm 81 and the right brake arm 85, holds braked wheel tightly.]。
The control circuit of electromagnet is contained in the electric-controlled box 73, and control box 73 can be contained near the brake nearby.
The equivalence that Figure 13 shows electromagnetic mechanism among the embodiment 10 changes, and in Figure 13, replaces curved boom lever 21 with straight-arm bar 74.The upper end of straight-arm bar 74 can promote the push rod 87 that declutches, and the framework 86 of tripping spring is enclosed within on the pivot pin 75 that is welded on the threaded head on the fixed core 12.Other features are similar to Figure 12.
This stopper mechanism compactness, rapidity are better than hydraulic brake, can not slip hook, also help the prolongation of brake scotch adjustment cycle or double.In addition, because the control of electromagnet all is the control of electric weight, the automatic control that easier enforcement is optimized [brake in good time, declutch in good time].
Electromagnetic mechanism of the present invention also can be used for the trip electromagnet of device for switching and electromagnetically operated valve etc.
Claims (11)
1. the electromagnetic mechanism with lever comprises direct drive type electro magnet and transmission mechanism, and described electromagnet mainly is made of fixed core, moving iron core and electric control system, and it is characterized in that: described direct drive type electro magnet is the short stroke electromagnet; Described transmission mechanism is made of less than 1 leverage and transition link that driven by moving core portion, between moving iron core and leverage lever ratio, and an end of transition link is connected with leverage.
2. the electromagnetic mechanism of band lever according to claim 1, it is characterized in that: described leverage is made of one-level or the straight-arm lever more than the one-level or curved boom lever, or constituting by straight-arm lever and curved boom lever, or constitute by pulley system or gear mechanism or hydraulic mechanism, interconnect between the above leverage of one-level.
3. the electromagnetic mechanism of band lever according to claim 1 is characterized in that: described transition link is roller or transition loose joint plate.
4. according to the electromagnetic mechanism of claim 1 or 2 or 3 described band levers, it is characterized in that: described leverage is a pair of curved boom lever (21) that the change that is positioned at the electromagnet both sides goes out force direction, and described transition link is to be connected moving transition loose joint plate (19) unshakable in one's determination by a direct acting roller of push rod (13) (24) or an end; Bearing pin (22) passes described curved boom lever (21) and bearing pin bearing (15), and described curved boom lever (21) rotates around bearing pin (22), constitutes the one-level lever transmission mechanism; The galianconism end of curved boom lever (21) is equipped with a roller shaft (23), and described roller (24) is housed on the roller shaft (23), on moving (12) unshakable in one's determination push rod (13) is housed, and the output of described push rod (13) acts on the described roller (24); The long arm end of described curved boom lever (21) connects brace (26) by connecting axle (25), and the other end of brace (26) is equipped with power output bearing pin (27).
5. the electromagnetic mechanism of band lever according to claim 1 is characterized in that: when described electric control system is operated with AC power, be the control circuit that adopts the rectification of two group of three pipe, every coil all is furnished with three rectifying tubes; Around the wiring of first coil (W1), displacement diverter switch (QK), first rectifying tube (D1), described first coil (W1), first relay contact (Jr1) that plays the rapid release effect and second rectifying tube (D2) of successively connecting normally closed between first end of incoming cables (001) of ac control power supply (Uac) and second end of incoming cables (002); Also be connected to relay (Jr) between first end of incoming cables (001) of power line and second end of incoming cables (002); The synchronous break-make of control power supply of relay (Jr) and electromagnet; Diverter switch (QK) two ends parallel connection the ined succession electric capacity (C1) of step-down metering function and the discharge resistance (Rcf) of high value perhaps, add low resistance resistance of string in electric capacity (C1) branch road, replace capacitor (C1) with the motor (MD) of band cooling fan; Relay contact (Jr1) the two ends resistance (Rf1) that connects in parallel, its resistance value are 5 to 10 times of dc resistance of described first coil (W1); Go back inverse parallel between first rectifying tube (D1) and second rectifying tube (D2) the 3rd rectifying tube (D3) is arranged; Wiring about second coil, its the 5th rectifying tube, the 6th rectifying tube, the 4th rectifying tube, resistance (Rf2), relay contact (Jr2) respectively with first rectifying tube, second rectifying tube, the 3rd rectifying tube, resistance (Rf1), relay contact (Jr1) order of connection are identical, and polarity is opposite.
6. the electromagnetic mechanism of band lever according to claim 1, it is characterized in that: when described electric control system is operated with DC power supply, the motor of select tape cooling fan (MD) is made decompression current-limiting element, and circuit connection is: displacement diverter switch (QKd), electromagnet coil (Wd) and the relay contact (Jrd) of successively connecting normally closed between the positive pole (2001) of control power supply (Udc) and the negative pole (2002); Be connected to relay (Jrd) between anodal (2001) and the negative pole (2002); In succession described motor (MD) and capacitance-resistance of described diverter switch (QKd) two ends parallel connection absorbs link (RC); Perhaps in described motor (MD) branch road, add low resistance resistance of string; Described relay contact (Jrd) the two ends parallel connection resistance (Rfd) of ining succession, resistance value is 5 to 10 times of coil (W1) dc resistance; Inverse parallel has a rectifying tube (Dd) between contact between described diverter switch (QKd) and the coil and negative pole (2002), is connected to the overvoltage protection link (OVPd) of direct current between the control two poles.
7. according to claim 1 or 2 or 3 or the electromagnetic mechanism of 5 or 6 described band levers, it is characterized in that: electromagnet comprises the moving iron core (12) of fixed core (11), band thrust push rod (13); Constitute the transmission mechanism of two-stage lever by straight-arm lever (61), secondary curved boom lever (65), connecting plate (63), bearing pin bearing (15) and second lever bearing (67); Electromagnet is contained on the mounting base (20) of electromagnet; Bearing pin bearing (15) is fixed on the mounting base (20) and fixed core (11) of electromagnet simultaneously, and second lever bearing (67) is equipped with on the top of fixed core (11); Roller (24) is housed on the straight-arm lever (61), and thrust push rod (13) acts on the roller (24); Straight-arm lever (61) is installed on the bearing pin bearing (15) by bearing pin (22); The upper end of straight-arm lever (61) connects bearing pin (62) by one-level and links to each other with connecting plate (63); Connecting plate (63) connects bearing pin (64) by secondary and connects secondary curved boom lever (65); Secondary curved boom lever (65) is contained on the second lever bearing (67) by second lever bearing pin (66); The upper end of secondary curved boom lever (65) is by the interface (69) of upper pin (68) connecting band dynamic load; Entire mechanism adds outer cover.
8. Direct Action Type device for switching comprises the electromagnetic mechanism of the band lever of claim 1 or 4, and it is characterized in that: the casing that electromagnet is housed is contained in the back side one side of insulated chassis (2); There is the bearing pin bearing (15) of a shape bottom of fixed core (11) and the runners (16) of the door shape of installing hole is arranged; Bearing pin (22) is worn bearing pin bearing (15), and thread has been attacked at bearing pin (22) two ends, and the runners (16) of bearing pin (22) and electromagnet is fixed on the tank wall (18) that mild-steel sheet makes with nut; The base plate (17) of tank wall (18) and casing constitutes a dust seal closure; The power output bearing pin (27) of left part and electromagnetic mechanism of frame (5) of being slidingly installed is connected, the moving contact (4) that moves horizontally is equipped with on the be slidingly installed right side of frame (5), the central axis of electromagnet moving (11) unshakable in one's determination is parallel to described insulated chassis (2), the direction of motion of moving (11) unshakable in one's determination is parallel to the plane of insulated chassis (2), promptly the direction of motion of moving (11) unshakable in one's determination is vertical mutually or approaching vertical mutually with the direction of motion of moving contact (4), and this vertical or orthogonal relation is to realize by working the curved boom lever (21) that changes the directive effect of exerting oneself.
9. rotary switch electrical equipment, the electromagnetic mechanism that comprises the band lever of claim 1, it is characterized in that: the electromagnetic mechanism that the band lever of claim 1 is housed on rotation strip seat (45), electromagnetic mechanism comprises straight-arm lever or curved boom lever (46) and roller (24), on straight-arm lever or the curved boom lever (46) roller (24) is housed, the direction of motion of electromagnet is vertical mutually with the direction of motion of switch contact or approaching vertical mutually, in addition, mounting bar seat (43) is the thin plate bending moulding and rectangle shaped steel that open slot is arranged.
10. crane brake comprises the electromagnetic mechanism of claim 1 or 2 or 3 described band levers, and it is characterized in that: described electromagnetic mechanism is made of the curved boom lever (21) or the straight-arm lever (74) of electromagnet and band roller (24); Electromagnet is contained in the top of brake, is connected to the installation frame (82) of electromagnetic mechanism on the left brake arm parts (81) of brake, and electromagnet is contained on this framework (82); The bearing pin (22) that curved boom lever (21) rotates is housed on this framework (82), and curved boom lever (21) or straight-arm lever (74) act on the push rod that declutches (87) that brake is declutched.
11. according to the application of the electromagnetic mechanism of claim 1 or 2 or 3 described band levers, it is characterized in that: this electromagnetic mechanism is applied to device for switching, brake, electromagnetically operated valve, making electromagnet, trip electromagnet, tractive electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2006101352732A CN101017723B (en) | 2006-12-01 | 2006-12-01 | The electromagnetic mechanism with the lever and the electro-mechanic product using same |
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| CN2006101352732A CN101017723B (en) | 2006-12-01 | 2006-12-01 | The electromagnetic mechanism with the lever and the electro-mechanic product using same |
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| CN101017723B true CN101017723B (en) | 2011-12-07 |
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| CN102426945A (en) * | 2011-09-20 | 2012-04-25 | 上海诺雅克电气有限公司 | Switching device with lever ratio |
| CN102840373B (en) * | 2012-09-18 | 2014-04-23 | 陕西宏远燃气设备有限公司 | Electromagnetic remote control mechanism for gas cut-off valve |
| CN107191660B (en) * | 2017-07-24 | 2024-03-19 | 刘建宏 | 60mm straight Cheng Duandian reset intelligent variable-frequency hydraulic electric actuator |
| CN108346549B (en) * | 2018-04-27 | 2019-08-30 | 潘浩然 | A kind of high voltagehigh frequency sound contactor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058288A (en) * | 1990-07-14 | 1992-01-29 | 肖新凯 | Small universal electromagnet operated at wide voltage range |
| DE19824537A1 (en) * | 1998-06-03 | 1999-12-09 | Lsp Innovative Automotive Sys | Electromagnetic drive for actuating valve in internal combustion engine |
| CN201017741Y (en) * | 2006-12-01 | 2008-02-06 | 肖新凯 | Electromagnetical mechanism with lever |
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2006
- 2006-12-01 CN CN2006101352732A patent/CN101017723B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058288A (en) * | 1990-07-14 | 1992-01-29 | 肖新凯 | Small universal electromagnet operated at wide voltage range |
| DE19824537A1 (en) * | 1998-06-03 | 1999-12-09 | Lsp Innovative Automotive Sys | Electromagnetic drive for actuating valve in internal combustion engine |
| CN201017741Y (en) * | 2006-12-01 | 2008-02-06 | 肖新凯 | Electromagnetical mechanism with lever |
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