CN103944429A - Dual-purpose machine for driving direct current arc welding machine and direct current motor - Google Patents

Dual-purpose machine for driving direct current arc welding machine and direct current motor Download PDF

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Publication number
CN103944429A
CN103944429A CN201410149996.2A CN201410149996A CN103944429A CN 103944429 A CN103944429 A CN 103944429A CN 201410149996 A CN201410149996 A CN 201410149996A CN 103944429 A CN103944429 A CN 103944429A
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China
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resistance
pin
capacitor
power supply
diode
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CN201410149996.2A
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CN103944429B (en
Inventor
栾亚伦
王兴智
杨松
张格文
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Shandong Tanaka Machinery Equipment Co., Ltd.
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JINAN TIANZHONG INDUSTRY TRADE Co Ltd
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Abstract

The invention discloses a dual-purpose machine for driving a direct current arc welding machine and a direct current motor. The dual-purpose machine for driving the direct current arc welding machine and the direct current motor comprises a main circuit and a control circuit. The main circuit comprises a rectifier, wherein the rectifier is connected with a filter; the filter is connected with an inversion unit; the inversion unit is connected with a main high-frequency transformer; the main high-frequency transformer is connected with a high-frequency rectifier; the high-frequency rectifier is connected with a high-frequency filter. The control circuit comprises a high-frequency signal generation circuit, a frequency detection circuit, a signal processing operational circuit, a sampling circuit, a central controller, a switchover circuit and a multifunctional conversion input circuit. The dual-purpose machine for driving the direct current arc welding machine and the direct current motor has the advantages that one power generation machine drives the direct current walking motor and the direct current arc welding machine, so that the cost of the dual-purpose machine is lowered; the inversion circuit adopts the main high-frequency transformer, the size and the weight of the machine are reduced greatly, efficiency is improved, and the cost of the machine is further lowered at the same time.

Description

Direct-current arc welding, direct current machine drive dual-purpose machine
Technical field
The present invention relates to a kind of generating equipment, specifically a kind of direct-current arc welding, direct current machine drive dual-purpose machine.
Background technology
The operation principle of contravariant DC arc welder is: by 50HZ three-phase 380V AC rectification, be reverse into high frequency (more than 20KHZ) alternating current, then through the step-down of inversion main transformer, rectification again, the direct current of " voltage-to-current " characteristic applicable electric welding of output being required by arc-welding control circuit, thus real electric welding field executed.Direct current machine needs a direct current that meets direct current machine " voltage-to-current " characteristic and " weak-magnetic speed-regulating " characteristic requirements, therefore be with at present dynamic portable welding equipment all to arrange two and overlap independently power-equipment, be respectively used to drive vehicle to run and power to welding machine, equipment cost taken by themselves is higher.In addition, at present by exchanging the direct current motor drive circuit of internal combustion engine generator group as power, all that the alternating current that unit provides drives direct current machine running through Industrial Frequency Transformer step-down, rectification, obviously not only volume is large, Heavy Weight for Industrial Frequency Transformer, and the iron loss expending and copper loss all larger, not only efficiency is low but also cost is also corresponding higher.
Summary of the invention
The object of this invention is to provide a kind of direct-current arc welding, direct current machine drives dual-purpose machine, it can drive respectively direct current movable motor and DC arc welder by a set of generating equipment, be conducive to reduce equipment cost taken by themselves, inverter circuit of the present invention has adopted high frequency main transformer, compared with the drive circuit of existing employing Industrial Frequency Transformer, significantly reduce equipment volume and weight, improved efficiency, further reduced equipment cost simultaneously.
The present invention for achieving the above object, be achieved through the following technical solutions: comprise main circuit and control circuit, main circuit comprises rectifier, the output of rectifier is connected with the input of filter, the output of filter is connected with the input of inversion unit, the output of inversion unit is connected with the input of high frequency main transformer, the output of high frequency main transformer is connected with the input of hf rectifier, the output of hf rectifier is connected with the input of high frequency filter, control circuit comprises high-frequency signal circuit for generating, frequency detection circuit, signal is processed computing circuit, sample circuit, central controller, commutation circuit, multi-functional conversion input circuit.The annexation of main circuit and control circuit is as follows: rectifier is by the voltage of input, the three-phase alternating current of changeable frequency is rectified into direct current after by rectifier U9, wave filter is by capacitor C 1, capacitor C 5, capacitor C 6 and resistance R1, resistance R2 composition, capacitor C 1 is Absorption Capacitance, C5, C6 is filter capacitor, R1, R2 is equalizing resistance, one end of capacitor C 1 is connected with the positive output end of rectifier U9, the other end is connected with the negative output terminal of rectifier U9, resistance R1 is in parallel with capacitor C 5, resistance R2 is in parallel with capacitor C 6, capacitor C 5 positive poles are connected with one end of capacitor C 1, capacitor C 5 negative poles are connected with capacitor C 6 is anodal, capacitor C 6 negative poles are connected with the other end of capacitor C 1, the direct current of input is passed through inversion unit U10 inverter output frequency 10 ~ 100kHz high-frequency alternating current by inversion unit, high frequency main transformer is by high frequency transformer T3, D.C. contactor K3 and binding post J8 composition, binding post J8 is D.C. contactor K3 coil external cabling post, realize by controlling D.C. contactor K3 the number of turn that changes high frequency transformer T3, high frequency transformer T3 is by the winding I of primary side, winding of winding II and secondary side forms, two windings in series of primary side of high frequency transformer T3, the other end of first side winding I exchanges outlet side one end and is connected with inversion unit U10, the other end of first side winding II exchanges the outlet side other end and is connected with inversion unit U10, the normally opened contact of D.C. contactor K3 is in parallel with first side winding II, the coil two ends of D.C. contactor K3 are connected respectively to pin 1 and the pin 2 of binding post J8, export at the secondary side winding two ends of high frequency transformer T3, the alternating current that high frequency transformer T3 obtains secondary side winding two ends is by hf rectifier U13 rectification output direct current, high frequency filter is made up of inductance L 4 and capacitor C 7, one end of inductance L 4 is connected with the positive output end of hf rectifier U13, the other end of inductance L 4 is connected with the positive pole of capacitor C 7, the negative pole of capacitor C 7 is connected with the negative output terminal of hf rectifier U13, the outside positive output end of dual-purpose machine is connected with the positive pole of capacitor C 7, the outside negative output terminal of dual-purpose machine is connected with the negative pole of capacitor C 7, the pin 1 of the power module U15 of high-frequency signal circuit for generating be connected to power supply ' 12V, the pin 2 of power module U15 be connected to power supply ' 0V, on the pin 3 of power module U15, obtain power supply-15V, the pin 4 of power module U15 is connected to 0V power supply, on the pin 5 of power module U15, obtain power supply+15V, capacitor C 41 is connected with capacitor C 42, the negative pole of capacitor C 41 is connected with the pin 3 of power module U15, the positive pole of capacitor C 41 is connected with the pin 4 of power module U15, the positive pole of capacitor C 42 is connected with the pin 5 of power module U15, capacitor C 44 is in parallel with capacitor C 41, capacitor C 43 is in parallel with capacitor C 42, the pin 1 of power module U16 is connected to power supply+15V, the pin 2 of power module U16 is connected to power supply 0V, the positive pole of capacitor C 46 is connected with the pin 3 of power module U16, the negative pole of capacitor C 46 is connected to power supply 0V, capacitor C 45 is in parallel with capacitor C 46,Give determining voltage signal QG through capacitor C 9, capacitor C 10, resistance R4, resistance R5, operational amplifier U15, resistance R6, the filter network that capacitor C 11 forms is to 5 pin of control chip U1, for control chip U1 work provides given signal, one end of resistance R4 is connected with capacitor C 9, capacitor C 9 other ends are connected to power supply 0V, the other end of resistance R4 is connected with the in-phase input end of operational amplifier U15, after resistance R5 is in parallel with capacitor C 10, one end is connected with the in-phase input end of operational amplifier U15, the other end is connected to power supply 0V, the inverting input of operational amplifier U15 is connected with output, be connected to control chip U1 pin 5 by resistance R6, the pin 5 of control chip U1 is connected with capacitor C 11 one end, capacitor C 11 other ends are connected to power supply 0V, resistance R7, resistance R8, capacitor C 28, capacitor C 29 makes the control chip U1 work can soft start, resistance R8 is in parallel with capacitor C 29, the positive pole of capacitor C 29 and control chip U1 pin 1, the negative pole of capacitor C 29 is connected to power supply 0V, resistance R7 connects with capacitor C 28, the negative pole of capacitor C 28 is connected to power supply 0V, the positive pole of capacitor C 29 and control chip U1 pin 2, the other end of resistance R7 is connected with control chip U1 pin 1, current sensor U11 samples gained signal through resistance R14 to high frequency transformer primary side current, resistance R15, resistance R16, resistance R17, the filter network that capacitor C 18 forms is to 4 pin of control chip U1, for control chip U1 work provides given signal, resistance R16 connects with resistance R17, the other end of resistance R17 is connected with the output of current sensor U11, the other end of resistance R16 is connected with control chip U1 pin 4, control chip U1 pin 4 is by be connected to-15V of resistance R14 power supply, control chip U1 pin 4 is connected to power supply 0V by resistance R15, harmonic compensation electricity routing resistance R11, resistance R12, capacitor C 15, capacitor C 16, operational amplifier U16 composition, the in-phase input end of operational amplifier U16 is connected with control chip U1 pin 8, the inverting input of operational amplifier U16 is connected with output, resistance R11, in parallel with resistance R12 and capacitor C 15 after capacitor C 16 series connection, capacitor C 15 one end are connected with control chip U1 pin 4, capacitor C 15 other ends are connected with operational amplifier U16 output, concussion timing circuit is by resistance R9, resistance R10, capacitor C 12, capacitor C 14 forms, resistance R9 is in parallel with resistance R10, one end is connected with control chip U1 pin 8, the other end is connected to power supply 0V, capacitor C 12 is in parallel with capacitor C 14, one end is connected with control chip U1 pin 9, the other end is connected to power supply 0V, current sensor U11 samples gained signal through resistance R17 to high frequency transformer primary side current, resistance R18, resistance R19, capacitor C 18, capacitor C 19 is turn-offed for control chip U1 provides outside, resistance R17 and resistance R18 are connected in series to control chip U1 pin 16, resistance R19 is in parallel with capacitor C 19,One end is connected with control chip U1 pin 16, and the other end is connected to power supply 0V, and resistance R13 is the protective resistance of control chip U1 output stage biased voltage input, capacitor C 13, capacitor C 17, capacitor C 30, capacitor C 31 is filter capacitor, resistance R13 one end is connected with control chip U1 pin 15, the resistance R13 other end is connected with control chip U1 pin 13, capacitor C 13 is in parallel with capacitor C 30, and one end is connected with control chip U1 pin 15, and the other end is connected to power supply 0V, capacitor C 17 is in parallel with capacitor C 31, one end is connected with control chip U1 pin 13, and the other end is connected to power supply 0V, by diode D10, diode D11, resistance R20, resistance R21, resistance R22, resistance R23, triode Q1, triode Q2, triode Q3, triode Q4, resistance R24, capacitor C 20 forms full-bridge circuit, and two paths of signals is through isolating transformer T1, isolating transformer T2, capacitor C 21, capacitor C 22, capacitor C 23, capacitor C 24, resistance R25, resistance R26, resistance R27, resistance R28, resistance R29, resistance R30, resistance R31, resistance R70, diode D12, diode D13, diode D14, diode D15 becomes four road signals and drives inversion unit, the base stage of triode Q1 is connected with control chip U1 pin 14 by resistance R20, the base stage of triode Q3 is connected with control chip U1 pin 14 by resistance R21, the negative electrode of diode D10 is connected with control chip U1 pin 14, the anode of diode D10 is connected to power supply 0V, the base stage of triode Q2 is connected with control chip U1 pin 11 by resistance R22, the base stage of triode Q4 is connected with control chip U1 pin 11 by resistance R23, the negative electrode of diode D11 is connected with control chip U1 pin 14, the anode of diode D11 is connected to power supply 0V, after being connected with triode Q3 colelctor electrode, triode Q1 colelctor electrode is connected with the pin 1 of isolating transformer T1 and isolating transformer T2, after triode Q2 colelctor electrode is connected with triode Q4 colelctor electrode, be connected with the one end after resistance R24 and capacitor C 20 parallel connections, resistance R24 is connected with the pin 2 of isolating transformer T1 and isolating transformer T2 with the other end after capacitor C 20 parallel connections, triode Q3 emitter stage is connected to power supply 0V, triode Q4 emitter stage is connected to power supply 0V, triode Q1 emitter stage is connected with triode Q2 emitter stage, it is in parallel with resistance R25 after diode D15 connects with resistance R70, diode D15 negative electrode is connected with isolating transformer T1 pin 6, the other end of resistance R70 is connected with capacitor C 21 one end, capacitor C 21 other ends are connected with isolating transformer T1 pin 5, it is in parallel with resistance R26 after diode D12 connects with resistance R29, diode D12 negative electrode is connected with isolating transformer T1 pin 3, the other end of resistance R29 is connected with capacitor C 22 one end, capacitor C 22 other ends are connected with isolating transformer T1 pin 4, it is in parallel with resistance R27 after diode D13 connects with resistance R30Diode D13 negative electrode is connected with isolating transformer T2 pin 6, the other end of resistance R30 is connected with capacitor C 23 one end, capacitor C 23 other ends are connected with isolating transformer T2 pin 5, it is in parallel with resistance R28 after diode D14 connects with resistance R31, diode D14 negative electrode is connected with isolating transformer T2 pin 3, the other end of resistance R31 is connected with capacitor C 24 one end, capacitor C 24 other ends are connected with isolating transformer T2 pin 4, respectively in capacitor C 21, capacitor C 22, capacitor C 23, capacitor C 24 two ends obtain four road signals and drive inversion unit, resistance R54, diode D2, optocoupler U6, resistance R61, R62 component frequency testing circuit, obtain corresponding frequency signal and send into control chip U8, one end of resistance R54 is connected with the U of three-phase alternating current, the other end of resistance R54 is connected with the anode of diode D2, the negative electrode of diode D2 is connected with the pin 1 of optocoupler U6, the pin 2 of optocoupler U6 is connected with the V of three-phase alternating current, the pin 3 of optocoupler U6 is connected with one end of R61, be connected to+5V of the other end of R61 power supply, the pin 3 of optocoupler U6 is connected with one end of R62, the other end of R62 is connected to the pin 9 of control chip U8, signal is processed control chip U8 in computing circuit signal is processed to output through resistance R63, after capacitor C 4, obtain voltage signal, after the voltage follower that this signal consists of the C part U3C of operational amplifier U3, obtain given signal UQG, control chip U8 pin 5 is connected with operational amplifier U3 pin 10 by resistance R63, one end of capacitor C 4 is connected with operational amplifier U3 pin 10, the other end of capacitor C 4 is connected to power supply 0V, operational amplifier U3 pin 8 is connected with operational amplifier U3 pin 9, the current sensor that circuit uses is current mode current sensor, on resistance R52, obtain voltage through diode D1, resistance R32, capacitor C 25, inductance L 5, resistance R3, capacitor C 26, the filter network of C27 composition, obtain needed voltage, receive the end of oppisite phase of the A part U2A of operational amplifier U2, current sensor U12 samples the signal that obtains by diode D1 to load current, inductance L 5, resistance R3 is connected with operational amplifier U2 pin 2, diode D1 anode is connected with sensor output, one end of resistance R52 is connected with diode D1 anode, the other end of resistance R52 is connected to power supply 0V, after resistance R32 is in parallel with capacitor C 25, one end is connected with diode D1 negative electrode, the other end is connected to power supply 0V, capacitor C 26 one end are connected with resistance R3 junction with inductance L 5, capacitor C 26 other ends are connected to power supply 0V, capacitor C 27 one end are connected with operational amplifier U2 pin 2, capacitor C 27 other ends are connected to power supply 0V, resistance R40, resistance R41, resistance R42 carries out dividing potential drop to output voltage, voltage sensor gathers the voltage on resistance R42, the voltage sensor that circuit uses is current mode voltage sensor, on resistance R44, obtain required voltage,This voltage and given signal UQG are through the B part by U3B operational amplifier U3, resistance R43, resistance R45, resistance R46, resistance R47, resistance R48, the voltage that the voltage signal obtaining after the P adjuster of resistance R49 composition obtains after the voltage follower of the A part U3A composition of operational amplifier U3 is by resistance R37, resistance R38, resistance R39, diode D9, diode D6, diode D5 discharges and recharges network capacitor C 8 is discharged and recharged, in capacitor C 8, obtain to determining voltage signal QG, the outside positive output end of dual-purpose machine is by resistance R40, resistance R41 and resistance R42 are connected in series to the outside negative output terminal of dual-purpose machine, voltage sensor U14 pin 1 is connected with resistance R42 junction with resistance R40, voltage sensor U14 pin 2 is connected with resistance R42 junction with resistance R41, voltage sensor U14 pin 3 is connected to power supply 0V with resistance R44 one end, voltage sensor U14 pin 4 is connected with the resistance R44 other end, voltage sensor U14 pin 4 is connected with operational amplifier U2 pin 6, voltage sensor U14 pin 4 is connected with operational amplifier U3 pin 6 by resistance R45, operational amplifier U3 pin 6 is connected with operational amplifier U3 pin 7 by resistance R43, operational amplifier U3 pin 6 is connected to power supply 0V by resistance R46, operational amplifier U3 pin 6 is by be connected to+5V of resistance R48 power supply, operational amplifier U3 pin 5 is connected to power supply 0V by resistance R49, operational amplifier U3 pin 5 is connected with operational amplifier U3 pin 8 by resistance R48, operational amplifier U3 pin 7 is connected with operational amplifier U3 pin 3, operational amplifier U3 pin 1 is connected with operational amplifier U3 pin 2, it is in parallel with resistance R38 after resistance R39 connects with diode D9, diode D9 negative electrode is connected with operational amplifier U3 pin 1, the other end of resistance R39 is connected with capacitor C 8 is anodal, capacitor C 8 negative poles are connected to power supply 0V, resistance R37 connects with diode D6, the other end of resistance R37 is connected with capacitor C 8 is anodal, diode D6 negative electrode is connected with operational amplifier U2 pin 1, diode D5 anode is connected with diode D6 anode, diode D5 negative electrode is connected with operational amplifier U2 pin 7, resistance R51, diode D8 forms current protection indicating circuit, the A part U2A of operational amplifier U2 and resistance R50 form hysteresis loop comparator, when anti-phase input terminal voltage is greater than in-phase input end voltage, on R34, obtain voltage time, output is electronegative potential, in the time that anti-phase input terminal voltage is less than in-phase input end voltage, output is high potential, change the protection value of output current by adjusting resistance R34 value, resistance R34 pin 1 be connected to+5V power supply, resistance R34 pin 3 is connected to power supply 0V, resistance R34 pin 2 is connected with operational amplifier U2 pin 3, operational amplifier U2 pin 3 is connected with operational amplifier U2 pin 1 by resistance R50, resistance R51 is connected with diode D8, be connected to+5V of diode D8 anode power supply,The resistance R51 other end be connected with operational amplifier U2 pin 1, resistance R36, diode D7 forms overvoltage indicating circuit, the B part U2B of operational amplifier U2 and resistance R35 form hysteresis loop comparator, when anti-phase input terminal voltage is greater than in-phase input end voltage, on R33, obtain voltage time, output is electronegative potential, in the time that anti-phase input terminal voltage is less than in-phase input end voltage, output is high potential, change the protection value of output voltage by adjusting resistance R33 value, resistance R33 pin 1 be connected to+5V power supply, resistance R33 pin 3 is connected to power supply 0V, resistance R33 pin 2 is connected with operational amplifier U2 pin 5, operational amplifier U2 pin 5 is connected with operational amplifier U2 pin 7 by resistance R35, resistance R36 and diode D7, diode D7 negative electrode be connected with operational amplifier U2 pin 7, be connected to+5V of resistance R51 other end power supply, the current sensor U11 of sample circuit samples to high frequency transformer primary side current, current sensor U12 samples to load current, voltage sensor U14 samples to load voltage, connector J3, resistance R56, optocoupler U5, resistance R59, resistance R60 forms temperature sampling circuit, obtain corresponding temperature signal and send into control chip U8, the pin 1 of optocoupler U5 by resistance R56 be connected to ' 12V power supply, the pin 2 of optocoupler U5 is connected with the pin 2 of binding post J3, the pin 1 of binding post J3 be connected to power supply ' 0V, the pin 4 of optocoupler U5 is by be connected to+5V of resistance R59 power supply, the pin 3 of optocoupler U5 is connected to power supply 0V, one end of resistance R60 is connected with the pin 4 of optocoupler U5, one end of resistance R60 is connected with the pin 10 of control chip U8, programming port J1, resistance R53, control chip U8, capacitor C 2, capacitor C 3, crystal oscillator Y1 forms central controller, capacitor C 2, capacitor C 3, crystal oscillator Y1 forms clock circuit, for control chip U8 provides work clock signal, one end of capacitor C 2 is connected with one end of crystal oscillator Y1, the other end of capacitor C 2 is connected to power supply 0V, one end of capacitor C 3 is connected with the other end of crystal oscillator Y1, the other end of capacitor C 3 is connected to power supply 0V, one end of crystal oscillator Y1 is connected with the pin 2 of control chip U8, the other end of crystal oscillator Y1 is connected with the pin 3 of control chip U8, the pin 1 of programming port J1 is connected with the pin 4 of control chip U8, be connected to+5V of pin 2 power supply of programming port J1, the pin 3 of programming port J1 is connected to power supply 0V, the pin 4 of programming port J1 is connected with the pin 13 of control chip U8, the pin 5 of programming port J1 is connected with the pin 12 of control chip U8, commutation circuit is by relay K 1, diode D3, inductance L 6, inductance L 7, triode Q5, resistance R65, connector J4, connector J5, connector J6 switches given signal, by resistance R64, optocoupler U7, resistance R66, diode D4, relay K 2, triode Q6, connector J7 switches main transformer, the pin 6 of control chip U8 is connected with one end of resistance R65,The other end of resistance R65 is connected with triode Q5 base stage, triode Q5 colelctor electrode is connected with the anode of diode D3, the negative electrode of diode D3 is by be connected to+15V of inductance L 6 power supply, the coil of relay K 1 is in parallel with diode D3, triode Q5 emitter stage is connected to power supply 0V by inductance L 7, the pin 1 of relay K 1 is connected with the pin 2 of binding post J4, the pin 4 of relay K 1 is connected with the pin 1 of binding post J4, the pin 2 of relay K 1 is connected with the pin 1 of binding post J5, the pin 5 of relay K 1 is connected with the pin 2 of binding post J5, the pin 3 of relay K 1 is connected with the pin 1 of binding post J6, the pin 6 of relay K 1 is connected with the pin 2 of binding post J6, the pin 7 of control chip U8 is connected with the pin 2 of optocoupler U7, the pin 1 of optocoupler U7 is by be connected to+5V of resistance R64 power supply, the pin 3 of optocoupler U7 is connected to ' 12V power supply, the pin 4 of optocoupler U7 is connected to triode Q6 base stage by resistance R66, triode Q6 colelctor electrode is connected with the anode of diode D3, the negative electrode of diode D3 is connected to ' 12V power supply, the coil of relay K 2 is in parallel with diode D4, triode Q6 emitter stage be connected to power supply ' 0V, the pin 4 of relay K 1 is connected to ' 12V power supply, the pin 6 of relay K 1 is connected with the pin 1 of binding post J7, the pin 2 of binding post J7 be connected to power supply ' 0V, connector J2, resistance R55, optocoupler U4, resistance R57, resistance R58 forms multi-functional conversion input circuit, obtain corresponding mode signal and send into control chip U8, the pin 1 of optocoupler U4 by resistance R55 be connected to ' 12V power supply, the pin 2 of optocoupler U4 is connected with the pin 2 of binding post J2, the pin 1 of binding post J2 be connected to power supply ' 0V, the pin 4 of optocoupler U4 is by be connected to+5V of resistance R57 power supply, the pin 3 of optocoupler U4 is connected to power supply 0V, one end of resistance R58 is connected with the pin 4 of optocoupler U4, one end of resistance R58 is connected with the pin 11 of control chip U8.Main circuit and control circuit are installed in housing, housing is rectangle, handle is installed in a side of housing, on an end face of housing, main switch, function diverter switch are set, welding current is adjusted knob, striking current is adjusted knob, joints made by electric welding, motor drive sub and three-phase alternating current out splice going splice.
The invention has the advantages that: can drive respectively direct current movable motor and DC arc welder by a set of generating equipment, be conducive to reduce equipment cost taken by themselves, inverter circuit of the present invention has adopted high frequency main transformer, compared with the drive circuit of existing employing Industrial Frequency Transformer, equipment volume and weight are significantly reduced, improve efficiency, further reduced equipment cost simultaneously.
Brief description of the drawings
Fig. 1 is contour structures schematic diagram of the present invention;
Fig. 2 is circuit connecting relation schematic diagram of the present invention;
Fig. 3 is one of electrical schematic diagram of the present invention, and Fig. 3 right part and Fig. 4 left part join;
Fig. 4 is two of electrical schematic diagram of the present invention, and Fig. 4 left part and Fig. 3 right part join, and Fig. 4 right part and Fig. 5 left part join;
Fig. 5 is three of electrical schematic diagram of the present invention, and Fig. 5 left part and Fig. 4 right part join.
Embodiment
Direct-current arc welding of the present invention, direct current machine drives dual-purpose machine to comprise main circuit and control circuit, main circuit comprises rectifier 1, the output of rectifier 1 is connected with the input of filter 2, the output of filter 2 is connected with the input of inversion unit 3, the output of inversion unit 3 is connected with the input of high frequency main transformer 4, the output of high frequency main transformer 4 is connected with the input of hf rectifier 5, the output of hf rectifier 5 is connected with the input of high frequency filter 6, control circuit comprises high-frequency signal circuit for generating 7, frequency detection circuit 8, signal is processed computing circuit 9, sample circuit 10, central controller 11, commutation circuit 12, multi-functional conversion input circuit 13.The main circuit that the present invention adopts a set of " rectification-inversion-step-down-rectification again " and have the high frequency main transformer of multichannel secondary coil of the different numbers of turn, coordinates respectively the control circuit and the function switch that meet " direct-current arc welding " and " direct current machine driving " characteristic requirements.In the time that function switch is threaded to " electric welding field " gear, internal combustion engine generator group is set the fixed rotating speed operating mode that is operated in rated frequency.Connect secondary coil and " direct-current arc welding " control circuit that high frequency main transformer is applicable to the electric welding function number of turn, " dual-purpose machine " presents " direct-current arc welding " function simultaneously.In the time that functional switch is threaded to " motor driving " gear, internal combustion engine generator group is set and is operated in " natural frequency conversion, transformation " operating mode.Connect secondary coil and " direct current machine driving " control circuit that high frequency main transformer is applicable to the direct current machine driving function number of turn, " dual-purpose machine " presents " direct current machine driving " function simultaneously, thereby drives the infinitely variable speeds walking of " engineering truck " chassis.The present invention can drive respectively direct current movable motor and DC arc welder by a set of generating equipment, be conducive to reduce equipment cost taken by themselves, inverter circuit of the present invention has adopted high frequency main transformer, compared with the drive circuit of existing employing Industrial Frequency Transformer, equipment volume and weight are significantly reduced, improve efficiency, further reduced equipment cost simultaneously.
The annexation of main circuit of the present invention and control circuit is as follows: rectifier 1 is by the voltage of input, the three-phase alternating current of changeable frequency is rectified into direct current after by rectifier U9, wave filter 2 is by capacitor C 1, capacitor C 5, capacitor C 6 and resistance R1, resistance R2 composition, capacitor C 1 is Absorption Capacitance, C5, C6 is filter capacitor, R1, R2 is equalizing resistance, one end of capacitor C 1 is connected with the positive output end of rectifier U9, the other end is connected with the negative output terminal of rectifier U9, resistance R1 is in parallel with capacitor C 5, resistance R2 is in parallel with capacitor C 6, capacitor C 5 positive poles are connected with one end of capacitor C 1, capacitor C 5 negative poles are connected with capacitor C 6 is anodal, capacitor C 6 negative poles are connected with the other end of capacitor C 1, the direct current of input is passed through inversion unit U10 inverter output frequency 10 ~ 100kHz high-frequency alternating current by inversion unit 3, high frequency main transformer 4 is by high frequency transformer T3, D.C. contactor K3 and binding post J8 composition, binding post J8 is D.C. contactor K3 coil external cabling post, realize by controlling D.C. contactor K3 the number of turn that changes high frequency transformer T3, high frequency transformer T3 is by the winding I of primary side, winding of winding II and secondary side forms, two windings in series of primary side of high frequency transformer T3, the other end of first side winding I exchanges outlet side one end and is connected with inversion unit U10, the other end of first side winding II exchanges the outlet side other end and is connected with inversion unit U10, the normally opened contact of D.C. contactor K3 is in parallel with first side winding II, the coil two ends of D.C. contactor K3 are connected respectively to pin 1 and the pin 2 of binding post J8, export at the secondary side winding two ends of high frequency transformer T3, the alternating current that high frequency transformer T3 obtains secondary side winding two ends is by hf rectifier 5U13 rectification output direct current, high frequency filter 6 is made up of inductance L 4 and capacitor C 7, one end of inductance L 4 is connected with the positive output end of hf rectifier U13, the other end of inductance L 4 is connected with the positive pole of capacitor C 7, the negative pole of capacitor C 7 is connected with the negative output terminal of hf rectifier U13, the outside positive output end of dual-purpose machine is connected with the positive pole of capacitor C 7, the outside negative output terminal of dual-purpose machine is connected with the negative pole of capacitor C 7, the pin 1 of the power module U15 of high-frequency signal circuit for generating 7 be connected to power supply ' 12V, the pin 2 of power module U15 be connected to power supply ' 0V, on the pin 3 of power module U15, obtain power supply-15V, the pin 4 of power module U15 is connected to 0V power supply, on the pin 5 of power module U15, obtain power supply+15V, capacitor C 41 is connected with capacitor C 42, the negative pole of capacitor C 41 is connected with the pin 3 of power module U15, the positive pole of capacitor C 41 is connected with the pin 4 of power module U15, the positive pole of capacitor C 42 is connected with the pin 5 of power module U15, capacitor C 44 is in parallel with capacitor C 41, capacitor C 43 is in parallel with capacitor C 42, the pin 1 of power module U16 is connected to power supply+15V, the pin 2 of power module U16 is connected to power supply 0V, the positive pole of capacitor C 46 is connected with the pin 3 of power module U16, the negative pole of capacitor C 46 is connected to power supply 0V,Capacitor C 45 is in parallel with capacitor C 46, give determining voltage signal QG through capacitor C 9, capacitor C 10, resistance R4, resistance R5, operational amplifier U15, resistance R6, the filter network that capacitor C 11 forms is to 5 pin of control chip U1, for control chip U1 work provides given signal, one end of resistance R4 is connected with capacitor C 9, capacitor C 9 other ends are connected to power supply 0V, the other end of resistance R4 is connected with the in-phase input end of operational amplifier U15, after resistance R5 is in parallel with capacitor C 10, one end is connected with the in-phase input end of operational amplifier U15, the other end is connected to power supply 0V, the inverting input of operational amplifier U15 is connected with output, be connected to control chip U1 pin 5 by resistance R6, the pin 5 of control chip U1 is connected with capacitor C 11 one end, capacitor C 11 other ends are connected to power supply 0V, resistance R7, resistance R8, capacitor C 28, capacitor C 29 makes the control chip U1 work can soft start, resistance R8 is in parallel with capacitor C 29, the positive pole of capacitor C 29 and control chip U1 pin 1, the negative pole of capacitor C 29 is connected to power supply 0V, resistance R7 connects with capacitor C 28, the negative pole of capacitor C 28 is connected to power supply 0V, the positive pole of capacitor C 29 and control chip U1 pin 2, the other end of resistance R7 is connected with control chip U1 pin 1, current sensor U11 samples gained signal through resistance R14 to high frequency transformer primary side current, resistance R15, resistance R16, resistance R17, the filter network that capacitor C 18 forms is to 4 pin of control chip U1, for control chip U1 work provides given signal, resistance R16 connects with resistance R17, the other end of resistance R17 is connected with the output of current sensor U11, the other end of resistance R16 is connected with control chip U1 pin 4, control chip U1 pin 4 is by be connected to-15V of resistance R14 power supply, control chip U1 pin 4 is connected to power supply 0V by resistance R15, harmonic compensation electricity routing resistance R11, resistance R12, capacitor C 15, capacitor C 16, operational amplifier U16 composition, the in-phase input end of operational amplifier U16 is connected with control chip U1 pin 8, the inverting input of operational amplifier U16 is connected with output, resistance R11, in parallel with resistance R12 and capacitor C 15 after capacitor C 16 series connection, capacitor C 15 one end are connected with control chip U1 pin 4, capacitor C 15 other ends are connected with operational amplifier U16 output, concussion timing circuit is by resistance R9, resistance R10, capacitor C 12, capacitor C 14 forms, resistance R9 is in parallel with resistance R10, one end is connected with control chip U1 pin 8, the other end is connected to power supply 0V, capacitor C 12 is in parallel with capacitor C 14, one end is connected with control chip U1 pin 9, the other end is connected to power supply 0V, current sensor U11 samples gained signal through resistance R17 to high frequency transformer primary side current, resistance R18, resistance R19, capacitor C 18, capacitor C 19 is turn-offed for control chip U1 provides outside, resistance R17 and resistance R18 are connected in series to control chip U1 pin 16,Resistance R19 is in parallel with capacitor C 19, and one end is connected with control chip U1 pin 16, and the other end is connected to power supply 0V, and resistance R13 is the protective resistance of control chip U1 output stage biased voltage input, capacitor C 13, capacitor C 17, capacitor C 30, capacitor C 31 is filter capacitor, resistance R13 one end is connected with control chip U1 pin 15, the resistance R13 other end is connected with control chip U1 pin 13, capacitor C 13 is in parallel with capacitor C 30, and one end is connected with control chip U1 pin 15, and the other end is connected to power supply 0V, capacitor C 17 is in parallel with capacitor C 31, one end is connected with control chip U1 pin 13, and the other end is connected to power supply 0V, by diode D10, diode D11, resistance R20, resistance R21, resistance R22, resistance R23, triode Q1, triode Q2, triode Q3, triode Q4, resistance R24, capacitor C 20 forms full-bridge circuit, and two paths of signals is through isolating transformer T1, isolating transformer T2, capacitor C 21, capacitor C 22, capacitor C 23, capacitor C 24, resistance R25, resistance R26, resistance R27, resistance R28, resistance R29, resistance R30, resistance R31, resistance R70, diode D12, diode D13, diode D14, diode D15 becomes four road signals and drives inversion unit, the base stage of triode Q1 is connected with control chip U1 pin 14 by resistance R20, the base stage of triode Q3 is connected with control chip U1 pin 14 by resistance R21, the negative electrode of diode D10 is connected with control chip U1 pin 14, the anode of diode D10 is connected to power supply 0V, the base stage of triode Q2 is connected with control chip U1 pin 11 by resistance R22, the base stage of triode Q4 is connected with control chip U1 pin 11 by resistance R23, the negative electrode of diode D11 is connected with control chip U1 pin 14, the anode of diode D11 is connected to power supply 0V, after being connected with triode Q3 colelctor electrode, triode Q1 colelctor electrode is connected with the pin 1 of isolating transformer T1 and isolating transformer T2, after triode Q2 colelctor electrode is connected with triode Q4 colelctor electrode, be connected with the one end after resistance R24 and capacitor C 20 parallel connections, resistance R24 is connected with the pin 2 of isolating transformer T1 and isolating transformer T2 with the other end after capacitor C 20 parallel connections, triode Q3 emitter stage is connected to power supply 0V, triode Q4 emitter stage is connected to power supply 0V, triode Q1 emitter stage is connected with triode Q2 emitter stage, it is in parallel with resistance R25 after diode D15 connects with resistance R70, diode D15 negative electrode is connected with isolating transformer T1 pin 6, the other end of resistance R70 is connected with capacitor C 21 one end, capacitor C 21 other ends are connected with isolating transformer T1 pin 5, it is in parallel with resistance R26 after diode D12 connects with resistance R29, diode D12 negative electrode is connected with isolating transformer T1 pin 3, the other end of resistance R29 is connected with capacitor C 22 one end, capacitor C 22 other ends are connected with isolating transformer T1 pin 4It is in parallel with resistance R27 after diode D13 connects with resistance R30, diode D13 negative electrode is connected with isolating transformer T2 pin 6, the other end of resistance R30 is connected with capacitor C 23 one end, capacitor C 23 other ends are connected with isolating transformer T2 pin 5, it is in parallel with resistance R28 after diode D14 connects with resistance R31, diode D14 negative electrode is connected with isolating transformer T2 pin 3, the other end of resistance R31 is connected with capacitor C 24 one end, capacitor C 24 other ends are connected with isolating transformer T2 pin 4, respectively in capacitor C 21, capacitor C 22, capacitor C 23, capacitor C 24 two ends obtain four road signals and drive inversion unit, resistance R54, diode D2, optocoupler U6, resistance R61, R62 component frequency testing circuit 8, obtain corresponding frequency signal and send into control chip U8, one end of resistance R54 is connected with the U of three-phase alternating current, the other end of resistance R54 is connected with the anode of diode D2, the negative electrode of diode D2 is connected with the pin 1 of optocoupler U6, the pin 2 of optocoupler U6 is connected with the V of three-phase alternating current, the pin 3 of optocoupler U6 is connected with one end of R61, be connected to+5V of the other end of R61 power supply, the pin 3 of optocoupler U6 is connected with one end of R62, the other end of R62 is connected to the pin 9 of control chip U8, signal is processed control chip U8 in computing circuit 9 signal is processed to output through resistance R63, after capacitor C 4, obtain voltage signal, after the voltage follower that this signal consists of the C part U3C of operational amplifier U3, obtain given signal UQG, control chip U8 pin 5 is connected with operational amplifier U3 pin 10 by resistance R63, one end of capacitor C 4 is connected with operational amplifier U3 pin 10, the other end of capacitor C 4 is connected to power supply 0V, operational amplifier U3 pin 8 is connected with operational amplifier U3 pin 9, the current sensor that circuit uses is current mode current sensor, on resistance R52, obtain voltage through diode D1, resistance R32, capacitor C 25, inductance L 5, resistance R3, capacitor C 26, the filter network of C27 composition, obtain needed voltage, receive the end of oppisite phase of the A part U2A of operational amplifier U2, current sensor U12 samples the signal that obtains by diode D1 to load current, inductance L 5, resistance R3 is connected with operational amplifier U2 pin 2, diode D1 anode is connected with sensor output, one end of resistance R52 is connected with diode D1 anode, the other end of resistance R52 is connected to power supply 0V, after resistance R32 is in parallel with capacitor C 25, one end is connected with diode D1 negative electrode, the other end is connected to power supply 0V, capacitor C 26 one end are connected with resistance R3 junction with inductance L 5, capacitor C 26 other ends are connected to power supply 0V, capacitor C 27 one end are connected with operational amplifier U2 pin 2, capacitor C 27 other ends are connected to power supply 0V, resistance R40, resistance R41, resistance R42 carries out dividing potential drop to output voltage, voltage sensor gathers the voltage on resistance R42, the voltage sensor that circuit uses is current mode voltage sensor, on resistance R44, obtain required voltage,This voltage and given signal UQG are through the B part by U3B operational amplifier U3, resistance R43, resistance R45, resistance R46, resistance R47, resistance R48, the voltage that the voltage signal obtaining after the P adjuster of resistance R49 composition obtains after the voltage follower of the A part U3A composition of operational amplifier U3 is by resistance R37, resistance R38, resistance R39, diode D9, diode D6, diode D5 discharges and recharges network capacitor C 8 is discharged and recharged, in capacitor C 8, obtain to determining voltage signal QG, the outside positive output end of dual-purpose machine is by resistance R40, resistance R41 and resistance R42 are connected in series to the outside negative output terminal of dual-purpose machine, voltage sensor U14 pin 1 is connected with resistance R42 junction with resistance R40, voltage sensor U14 pin 2 is connected with resistance R42 junction with resistance R41, voltage sensor U14 pin 3 is connected to power supply 0V with resistance R44 one end, voltage sensor U14 pin 4 is connected with the resistance R44 other end, voltage sensor U14 pin 4 is connected with operational amplifier U2 pin 6, voltage sensor U14 pin 4 is connected with operational amplifier U3 pin 6 by resistance R45, operational amplifier U3 pin 6 is connected with operational amplifier U3 pin 7 by resistance R43, operational amplifier U3 pin 6 is connected to power supply 0V by resistance R46, operational amplifier U3 pin 6 is by be connected to+5V of resistance R48 power supply, operational amplifier U3 pin 5 is connected to power supply 0V by resistance R49, operational amplifier U3 pin 5 is connected with operational amplifier U3 pin 8 by resistance R48, operational amplifier U3 pin 7 is connected with operational amplifier U3 pin 3, operational amplifier U3 pin 1 is connected with operational amplifier U3 pin 2, it is in parallel with resistance R38 after resistance R39 connects with diode D9, diode D9 negative electrode is connected with operational amplifier U3 pin 1, the other end of resistance R39 is connected with capacitor C 8 is anodal, capacitor C 8 negative poles are connected to power supply 0V, resistance R37 connects with diode D6, the other end of resistance R37 is connected with capacitor C 8 is anodal, diode D6 negative electrode is connected with operational amplifier U2 pin 1, diode D5 anode is connected with diode D6 anode, diode D5 negative electrode is connected with operational amplifier U2 pin 7, resistance R51, diode D8 forms current protection indicating circuit, the A part U2A of operational amplifier U2 and resistance R50 form hysteresis loop comparator, when anti-phase input terminal voltage is greater than in-phase input end voltage, on R34, obtain voltage time, output is electronegative potential, in the time that anti-phase input terminal voltage is less than in-phase input end voltage, output is high potential, change the protection value of output current by adjusting resistance R34 value, resistance R34 pin 1 be connected to+5V power supply, resistance R34 pin 3 is connected to power supply 0V, resistance R34 pin 2 is connected with operational amplifier U2 pin 3, operational amplifier U2 pin 3 is connected with operational amplifier U2 pin 1 by resistance R50, resistance R51 is connected with diode D8, be connected to+5V of diode D8 anode power supply,The resistance R51 other end be connected with operational amplifier U2 pin 1, resistance R36, diode D7 forms overvoltage indicating circuit, the B part U2B of operational amplifier U2 and resistance R35 form hysteresis loop comparator, when anti-phase input terminal voltage is greater than in-phase input end voltage, on R33, obtain voltage time, output is electronegative potential, in the time that anti-phase input terminal voltage is less than in-phase input end voltage, output is high potential, change the protection value of output voltage by adjusting resistance R33 value, resistance R33 pin 1 be connected to+5V power supply, resistance R33 pin 3 is connected to power supply 0V, resistance R33 pin 2 is connected with operational amplifier U2 pin 5, operational amplifier U2 pin 5 is connected with operational amplifier U2 pin 7 by resistance R35, resistance R36 and diode D7, diode D7 negative electrode be connected with operational amplifier U2 pin 7, be connected to+5V of resistance R51 other end power supply, the current sensor U11 of sample circuit 10 samples to high frequency transformer primary side current, current sensor U12 samples to load current, voltage sensor U14 samples to load voltage, connector J3, resistance R56, optocoupler U5, resistance R59, resistance R60 forms temperature sampling circuit, obtain corresponding temperature signal and send into control chip U8, the pin 1 of optocoupler U5 by resistance R56 be connected to ' 12V power supply, the pin 2 of optocoupler U5 is connected with the pin 2 of binding post J3, the pin 1 of binding post J3 be connected to power supply ' 0V, the pin 4 of optocoupler U5 is by be connected to+5V of resistance R59 power supply, the pin 3 of optocoupler U5 is connected to power supply 0V, one end of resistance R60 is connected with the pin 4 of optocoupler U5, one end of resistance R60 is connected with the pin 10 of control chip U8, programming port J1, resistance R53, control chip U8, capacitor C 2, capacitor C 3, crystal oscillator Y1 forms central controller 11, capacitor C 2, capacitor C 3, crystal oscillator Y1 forms clock circuit, for control chip U8 provides work clock signal, one end of capacitor C 2 is connected with one end of crystal oscillator Y1, the other end of capacitor C 2 is connected to power supply 0V, one end of capacitor C 3 is connected with the other end of crystal oscillator Y1, the other end of capacitor C 3 is connected to power supply 0V, one end of crystal oscillator Y1 is connected with the pin 2 of control chip U8, the other end of crystal oscillator Y1 is connected with the pin 3 of control chip U8, the pin 1 of programming port J1 is connected with the pin 4 of control chip U8, be connected to+5V of pin 2 power supply of programming port J1, the pin 3 of programming port J1 is connected to power supply 0V, the pin 4 of programming port J1 is connected with the pin 13 of control chip U8, the pin 5 of programming port J1 is connected with the pin 12 of control chip U8, commutation circuit 12 is by relay K 1, diode D3, inductance L 6, inductance L 7, triode Q5, resistance R65, connector J4, connector J5, connector J6 switches given signal, by resistance R64, optocoupler U7, resistance R66, diode D4, relay K 2, triode Q6, connector J7 switches main transformer, the pin 6 of control chip U8 is connected with one end of resistance R65,The other end of resistance R65 is connected with triode Q5 base stage, triode Q5 colelctor electrode is connected with the anode of diode D3, the negative electrode of diode D3 is by be connected to+15V of inductance L 6 power supply, the coil of relay K 1 is in parallel with diode D3, triode Q5 emitter stage is connected to power supply 0V by inductance L 7, the pin 1 of relay K 1 is connected with the pin 2 of binding post J4, the pin 4 of relay K 1 is connected with the pin 1 of binding post J4, the pin 2 of relay K 1 is connected with the pin 1 of binding post J5, the pin 5 of relay K 1 is connected with the pin 2 of binding post J5, the pin 3 of relay K 1 is connected with the pin 1 of binding post J6, the pin 6 of relay K 1 is connected with the pin 2 of binding post J6, the pin 7 of control chip U8 is connected with the pin 2 of optocoupler U7, the pin 1 of optocoupler U7 is by be connected to+5V of resistance R64 power supply, the pin 3 of optocoupler U7 is connected to ' 12V power supply, the pin 4 of optocoupler U7 is connected to triode Q6 base stage by resistance R66, triode Q6 colelctor electrode is connected with the anode of diode D3, the negative electrode of diode D3 is connected to ' 12V power supply, the coil of relay K 2 is in parallel with diode D4, triode Q6 emitter stage be connected to power supply ' 0V, the pin 4 of relay K 1 is connected to ' 12V power supply, the pin 6 of relay K 1 is connected with the pin 1 of binding post J7, the pin 2 of binding post J7 be connected to power supply ' 0V, connector J2, resistance R55, optocoupler U4, resistance R57, resistance R58 forms multi-functional conversion input circuit 13, obtain corresponding mode signal and send into control chip U8, the pin 1 of optocoupler U4 by resistance R55 be connected to ' 12V power supply, the pin 2 of optocoupler U4 is connected with the pin 2 of binding post J2, the pin 1 of binding post J2 be connected to power supply ' 0V, the pin 4 of optocoupler U4 is by be connected to+5V of resistance R57 power supply, the pin 3 of optocoupler U4 is connected to power supply 0V, one end of resistance R58 is connected with the pin 4 of optocoupler U4, one end of resistance R58 is connected with the pin 11 of control chip U8.That said structure has advantages of is stable, failure rate is low, control precision is high, cost is relatively cheap.
The present invention is for the ease of carrying, can adopt following structure: main circuit and control circuit are installed in housing 14, housing 14 is rectangle, handle 22 is installed in a side of housing 14, on an end face of housing, main switch 15, function diverter switch 16 are set, welding current is adjusted knob 17, striking current is adjusted knob 18, joints made by electric welding 19, motor drive sub 20 and three-phase alternating current out splice going splice 21.Whole circuit blocks are made an entirety by this structure, and walking chassis and the welding equipment direct-assembling being convenient to drive with existing direct current machine form movably welding equipment.
Function diverter switch 16 is two-wire switching, is connected with the connector J2 of " dual-purpose machine " circuit for controlling motor plate.Welding current adjusts knob 17 and striking current adjustment knob 18 is three line knobs, and welding current adjusts knob 17 and striking current adjustment knob 18 arranges direct-current arc welding operating characteristic.In the time using " electric welding field " operating mode, function diverter switch 16 is threaded to " electric welding field " gear, use electric welding socket to export; In the time using " motor driving " operating mode, function switch is threaded to " motor driving " gear, use motor driven socket to export.
In the time that function diverter switch 16 is threaded to " electric welding field " gear, control chip U8 obtains corresponding mode signal by multi-functional conversion input circuit, and control chip U8 controls commutation circuit given signal and main transformer are switched.The given signal that makes to meet direct-current arc welding operating characteristic is sent into high-frequency signal circuit for generating, is met the main transformer coil access main circuit of " electric welding field " operating mode.
In the time that function diverter switch 16 is threaded to " motor driving " gear, control chip U8 obtains corresponding mode signal by multi-functional conversion input circuit, and control chip U8 controls commutation circuit given signal and main transformer are switched.Make to meet that the given signal that motor drives operating characteristic is sent into high-frequency signal circuit for generating, the main transformer coil that meets " motor drivings " operating mode accesses main circuit.
In figure, 23 is loads.

Claims (3)

1. direct-current arc welding, direct current machine drives dual-purpose machine, it is characterized in that: comprise main circuit and control circuit, main circuit comprises rectifier (1), the output of rectifier (1) is connected with the input of filter (2), the output of filter (2) is connected with the input of inversion unit (3), the output of inversion unit (3) is connected with the input of high frequency main transformer (4), the output of high frequency main transformer (4) is connected with the input of hf rectifier (5), the output of hf rectifier (5) is connected with the input of high frequency filter (6), control circuit comprises high-frequency signal circuit for generating (7), frequency detection circuit (8), signal is processed computing circuit (9), sample circuit (10), central controller (11), commutation circuit (12), multi-functional conversion input circuit (13).
2. direct-current arc welding according to claim 1, direct current generator drives dual-purpose machine, it is characterized in that: the annexation of main circuit and control circuit is as follows: rectifier (1) is by the voltage of input, the three-phase alternating current of changeable frequency is rectified into direct current after by rectifier U9, wave filter (2) is by capacitor C 1, capacitor C 5, capacitor C 6 and resistance R1, resistance R2 composition, capacitor C 1 is Absorption Capacitance, C5, C6 is filter capacitor, R1, R2 is equalizing resistance, one end of capacitor C 1 is connected with the positive output end of rectifier U9, the other end is connected with the negative output terminal of rectifier U9, resistance R1 is in parallel with capacitor C 5, resistance R2 is in parallel with capacitor C 6, capacitor C 5 positive poles are connected with one end of capacitor C 1, capacitor C 5 negative poles are connected with capacitor C 6 is anodal, capacitor C 6 negative poles are connected with the other end of capacitor C 1, the direct current of input is passed through inversion unit U10 inverter output frequency 10 ~ 100kHz high-frequency alternating current by inversion unit (3), high frequency main transformer (4) is by high frequency transformer T3, D.C. contactor K3 and binding post J8 composition, binding post J8 is D.C. contactor K3 coil external cabling post, realize by controlling D.C. contactor K3 the number of turn that changes high frequency transformer T3, high frequency transformer T3 is by the winding I of primary side, winding of winding II and secondary side forms, two windings in series of primary side of high frequency transformer T3, the other end of first side winding I exchanges outlet side one end and is connected with inversion unit U10, the other end of first side winding II exchanges the outlet side other end and is connected with inversion unit U10, the normally opened contact of D.C. contactor K3 is in parallel with first side winding II, the coil two ends of D.C. contactor K3 are connected respectively to pin 1 and the pin 2 of binding post J8, export at the secondary side winding two ends of high frequency transformer T3, the alternating current that high frequency transformer T3 obtains secondary side winding two ends is by hf rectifier (5) U13 rectification output direct current, high frequency filter (6) is made up of inductance L 4 and capacitor C 7, one end of inductance L 4 is connected with the positive output end of hf rectifier U13, the other end of inductance L 4 is connected with the positive pole of capacitor C 7, the negative pole of capacitor C 7 is connected with the negative output terminal of hf rectifier U13, the outside positive output end of dual-purpose machine is connected with the positive pole of capacitor C 7, the outside negative output terminal of dual-purpose machine is connected with the negative pole of capacitor C 7, the pin 1 of the power module U15 of high-frequency signal circuit for generating (7) be connected to power supply ' 12V, the pin 2 of power module U15 be connected to power supply ' 0V, on the pin 3 of power module U15, obtain power supply-15V, the pin 4 of power module U15 is connected to 0V power supply, on the pin 5 of power module U15, obtain power supply+15V, capacitor C 41 is connected with capacitor C 42, the negative pole of capacitor C 41 is connected with the pin 3 of power module U15, the positive pole of capacitor C 41 is connected with the pin 4 of power module U15, the positive pole of capacitor C 42 is connected with the pin 5 of power module U15, capacitor C 44 is in parallel with capacitor C 41, capacitor C 43 is in parallel with capacitor C 42, the pin 1 of power module U16 is connected to power supply+15V,The pin 2 of power module U16 is connected to power supply 0V, the positive pole of capacitor C 46 is connected with the pin 3 of power module U16, the negative pole of capacitor C 46 is connected to power supply 0V, capacitor C 45 is in parallel with capacitor C 46, give determining voltage signal QG through capacitor C 9, capacitor C 10, resistance R4, resistance R5, operational amplifier U15, resistance R6, the filter network that capacitor C 11 forms is to 5 pin of control chip U1, for control chip U1 work provides given signal, one end of resistance R4 is connected with capacitor C 9, capacitor C 9 other ends are connected to power supply 0V, the other end of resistance R4 is connected with the in-phase input end of operational amplifier U15, after resistance R5 is in parallel with capacitor C 10, one end is connected with the in-phase input end of operational amplifier U15, the other end is connected to power supply 0V, the inverting input of operational amplifier U15 is connected with output, be connected to control chip U1 pin 5 by resistance R6, the pin 5 of control chip U1 is connected with capacitor C 11 one end, capacitor C 11 other ends are connected to power supply 0V, resistance R7, resistance R8, capacitor C 28, capacitor C 29 makes the control chip U1 work can soft start, resistance R8 is in parallel with capacitor C 29, the positive pole of capacitor C 29 and control chip U1 pin 1, the negative pole of capacitor C 29 is connected to power supply 0V, resistance R7 connects with capacitor C 28, the negative pole of capacitor C 28 is connected to power supply 0V, the positive pole of capacitor C 29 and control chip U1 pin 2, the other end of resistance R7 is connected with control chip U1 pin 1, current sensor U11 samples gained signal through resistance R14 to high frequency transformer primary side current, resistance R15, resistance R16, resistance R17, the filter network that capacitor C 18 forms is to 4 pin of control chip U1, for control chip U1 work provides given signal, resistance R16 connects with resistance R17, the other end of resistance R17 is connected with the output of current sensor U11, the other end of resistance R16 is connected with control chip U1 pin 4, control chip U1 pin 4 is by be connected to-15V of resistance R14 power supply, control chip U1 pin 4 is connected to power supply 0V by resistance R15, harmonic compensation electricity routing resistance R11, resistance R12, capacitor C 15, capacitor C 16, operational amplifier U16 composition, the in-phase input end of operational amplifier U16 is connected with control chip U1 pin 8, the inverting input of operational amplifier U16 is connected with output, resistance R11, in parallel with resistance R12 and capacitor C 15 after capacitor C 16 series connection, capacitor C 15 one end are connected with control chip U1 pin 4, capacitor C 15 other ends are connected with operational amplifier U16 output, concussion timing circuit is by resistance R9, resistance R10, capacitor C 12, capacitor C 14 forms, resistance R9 is in parallel with resistance R10, one end is connected with control chip U1 pin 8, the other end is connected to power supply 0V, capacitor C 12 is in parallel with capacitor C 14, one end is connected with control chip U1 pin 9, the other end is connected to power supply 0V, current sensor U11 samples gained signal through resistance R17 to high frequency transformer primary side current, resistance R18, resistance R19,Capacitor C 18, capacitor C 19 is turn-offed for control chip U1 provides outside, resistance R17 and resistance R18 are connected in series to control chip U1 pin 16, resistance R19 is in parallel with capacitor C 19, one end is connected with control chip U1 pin 16, the other end is connected to power supply 0V, resistance R13 is the protective resistance of control chip U1 output stage biased voltage input, capacitor C 13, capacitor C 17, capacitor C 30, capacitor C 31 is filter capacitor, resistance R13 one end is connected with control chip U1 pin 15, the resistance R13 other end is connected with control chip U1 pin 13, capacitor C 13 is in parallel with capacitor C 30, and one end is connected with control chip U1 pin 15, and the other end is connected to power supply 0V, capacitor C 17 is in parallel with capacitor C 31, one end is connected with control chip U1 pin 13, and the other end is connected to power supply 0V, by diode D10, diode D11, resistance R20, resistance R21, resistance R22, resistance R23, triode Q1, triode Q2, triode Q3, triode Q4, resistance R24, capacitor C 20 forms full-bridge circuit, and two paths of signals is through isolating transformer T1, isolating transformer T2, capacitor C 21, capacitor C 22, capacitor C 23, capacitor C 24, resistance R25, resistance R26, resistance R27, resistance R28, resistance R29, resistance R30, resistance R31, resistance R70, diode D12, diode D13, diode D14, diode D15 becomes four road signals and drives inversion unit, the base stage of triode Q1 is connected with control chip U1 pin 14 by resistance R20, the base stage of triode Q3 is connected with control chip U1 pin 14 by resistance R21, the negative electrode of diode D10 is connected with control chip U1 pin 14, the anode of diode D10 is connected to power supply 0V, the base stage of triode Q2 is connected with control chip U1 pin 11 by resistance R22, the base stage of triode Q4 is connected with control chip U1 pin 11 by resistance R23, the negative electrode of diode D11 is connected with control chip U1 pin 14, the anode of diode D11 is connected to power supply 0V, after being connected with triode Q3 colelctor electrode, triode Q1 colelctor electrode is connected with the pin 1 of isolating transformer T1 and isolating transformer T2, after triode Q2 colelctor electrode is connected with triode Q4 colelctor electrode, be connected with the one end after resistance R24 and capacitor C 20 parallel connections, resistance R24 is connected with the pin 2 of isolating transformer T1 and isolating transformer T2 with the other end after capacitor C 20 parallel connections, triode Q3 emitter stage is connected to power supply 0V, triode Q4 emitter stage is connected to power supply 0V, triode Q1 emitter stage is connected with triode Q2 emitter stage, it is in parallel with resistance R25 after diode D15 connects with resistance R70, diode D15 negative electrode is connected with isolating transformer T1 pin 6, the other end of resistance R70 is connected with capacitor C 21 one end, capacitor C 21 other ends are connected with isolating transformer T1 pin 5, it is in parallel with resistance R26 after diode D12 connects with resistance R29, diode D12 negative electrode is connected with isolating transformer T1 pin 3The other end of resistance R29 is connected with capacitor C 22 one end, capacitor C 22 other ends are connected with isolating transformer T1 pin 4, it is in parallel with resistance R27 after diode D13 connects with resistance R30, diode D13 negative electrode is connected with isolating transformer T2 pin 6, the other end of resistance R30 is connected with capacitor C 23 one end, capacitor C 23 other ends are connected with isolating transformer T2 pin 5, it is in parallel with resistance R28 after diode D14 connects with resistance R31, diode D14 negative electrode is connected with isolating transformer T2 pin 3, the other end of resistance R31 is connected with capacitor C 24 one end, capacitor C 24 other ends are connected with isolating transformer T2 pin 4, respectively in capacitor C 21, capacitor C 22, capacitor C 23, capacitor C 24 two ends obtain four road signals and drive inversion unit, resistance R54, diode D2, optocoupler U6, resistance R61, R62 component frequency testing circuit (8), obtain corresponding frequency signal and send into control chip U8, one end of resistance R54 is connected with the U of three-phase alternating current, the other end of resistance R54 is connected with the anode of diode D2, the negative electrode of diode D2 is connected with the pin 1 of optocoupler U6, the pin 2 of optocoupler U6 is connected with the V of three-phase alternating current, the pin 3 of optocoupler U6 is connected with one end of R61, be connected to+5V of the other end of R61 power supply, the pin 3 of optocoupler U6 is connected with one end of R62, the other end of R62 is connected to the pin 9 of control chip U8, signal is processed control chip U8 in computing circuit (9) signal is processed to output through resistance R63, after capacitor C 4, obtain voltage signal, after the voltage follower that this signal consists of the C part U3C of operational amplifier U3, obtain given signal UQG, control chip U8 pin 5 is connected with operational amplifier U3 pin 10 by resistance R63, one end of capacitor C 4 is connected with operational amplifier U3 pin 10, the other end of capacitor C 4 is connected to power supply 0V, operational amplifier U3 pin 8 is connected with operational amplifier U3 pin 9, the current sensor that circuit uses is current mode current sensor, on resistance R52, obtain voltage through diode D1, resistance R32, capacitor C 25, inductance L 5, resistance R3, capacitor C 26, the filter network of C27 composition, obtain needed voltage, receive the end of oppisite phase of the A part U2A of operational amplifier U2, current sensor U12 samples the signal that obtains by diode D1 to load current, inductance L 5, resistance R3 is connected with operational amplifier U2 pin 2, diode D1 anode is connected with sensor output, one end of resistance R52 is connected with diode D1 anode, the other end of resistance R52 is connected to power supply 0V, after resistance R32 is in parallel with capacitor C 25, one end is connected with diode D1 negative electrode, the other end is connected to power supply 0V, capacitor C 26 one end are connected with resistance R3 junction with inductance L 5, capacitor C 26 other ends are connected to power supply 0V, capacitor C 27 one end are connected with operational amplifier U2 pin 2, capacitor C 27 other ends are connected to power supply 0V, resistance R40, resistance R41, resistance R42 carries out dividing potential drop to output voltage,Voltage sensor gathers the voltage on resistance R42, the voltage sensor that circuit uses is current mode voltage sensor, on resistance R44, obtain required voltage, this voltage and given signal UQG are through the B part by U3B operational amplifier U3, resistance R43, resistance R45, resistance R46, resistance R47, resistance R48, the voltage that the voltage signal obtaining after the P adjuster of resistance R49 composition obtains after the voltage follower of the A part U3A composition of operational amplifier U3 is by resistance R37, resistance R38, resistance R39, diode D9, diode D6, diode D5 discharges and recharges network capacitor C 8 is discharged and recharged, in capacitor C 8, obtain to determining voltage signal QG, the outside positive output end of dual-purpose machine is by resistance R40, resistance R41 and resistance R42 are connected in series to the outside negative output terminal of dual-purpose machine, voltage sensor U14 pin 1 is connected with resistance R42 junction with resistance R40, voltage sensor U14 pin 2 is connected with resistance R42 junction with resistance R41, voltage sensor U14 pin 3 is connected to power supply 0V with resistance R44 one end, voltage sensor U14 pin 4 is connected with the resistance R44 other end, voltage sensor U14 pin 4 is connected with operational amplifier U2 pin 6, voltage sensor U14 pin 4 is connected with operational amplifier U3 pin 6 by resistance R45, operational amplifier U3 pin 6 is connected with operational amplifier U3 pin 7 by resistance R43, operational amplifier U3 pin 6 is connected to power supply 0V by resistance R46, operational amplifier U3 pin 6 is by be connected to+5V of resistance R48 power supply, operational amplifier U3 pin 5 is connected to power supply 0V by resistance R49, operational amplifier U3 pin 5 is connected with operational amplifier U3 pin 8 by resistance R48, operational amplifier U3 pin 7 is connected with operational amplifier U3 pin 3, operational amplifier U3 pin 1 is connected with operational amplifier U3 pin 2, it is in parallel with resistance R38 after resistance R39 connects with diode D9, diode D9 negative electrode is connected with operational amplifier U3 pin 1, the other end of resistance R39 is connected with capacitor C 8 is anodal, capacitor C 8 negative poles are connected to power supply 0V, resistance R37 connects with diode D6, the other end of resistance R37 is connected with capacitor C 8 is anodal, diode D6 negative electrode is connected with operational amplifier U2 pin 1, diode D5 anode is connected with diode D6 anode, diode D5 negative electrode is connected with operational amplifier U2 pin 7, resistance R51, diode D8 forms current protection indicating circuit, the A part U2A of operational amplifier U2 and resistance R50 form hysteresis loop comparator, when anti-phase input terminal voltage is greater than in-phase input end voltage, on R34, obtain voltage time, output is electronegative potential, in the time that anti-phase input terminal voltage is less than in-phase input end voltage, output is high potential, change the protection value of output current by adjusting resistance R34 value, resistance R34 pin 1 be connected to+5V power supply, resistance R34 pin 3 is connected to power supply 0V, resistance R34 pin 2 is connected with operational amplifier U2 pin 3,Operational amplifier U2 pin 3 is connected with operational amplifier U2 pin 1 by resistance R50, resistance R51 is connected with diode D8, be connected to+5V of diode D8 anode power supply, the resistance R51 other end be connected with operational amplifier U2 pin 1, resistance R36, diode D7 forms overvoltage indicating circuit, the B part U2B of operational amplifier U2 and resistance R35 form hysteresis loop comparator, when anti-phase input terminal voltage is greater than in-phase input end voltage, on R33, obtain voltage time, output is electronegative potential, in the time that anti-phase input terminal voltage is less than in-phase input end voltage, output is high potential, change the protection value of output voltage by adjusting resistance R33 value, resistance R33 pin 1 be connected to+5V power supply, resistance R33 pin 3 is connected to power supply 0V, resistance R33 pin 2 is connected with operational amplifier U2 pin 5, operational amplifier U2 pin 5 is connected with operational amplifier U2 pin 7 by resistance R35, resistance R36 and diode D7, diode D7 negative electrode be connected with operational amplifier U2 pin 7, be connected to+5V of resistance R51 other end power supply, the current sensor U11 of sample circuit (10) samples to high frequency transformer primary side current, current sensor U12 samples to load current, voltage sensor U14 samples to load voltage, connector J3, resistance R56, optocoupler U5, resistance R59, resistance R60 forms temperature sampling circuit, obtain corresponding temperature signal and send into control chip U8, the pin 1 of optocoupler U5 by resistance R56 be connected to ' 12V power supply, the pin 2 of optocoupler U5 is connected with the pin 2 of binding post J3, the pin 1 of binding post J3 be connected to power supply ' 0V, the pin 4 of optocoupler U5 is by be connected to+5V of resistance R59 power supply, the pin 3 of optocoupler U5 is connected to power supply 0V, one end of resistance R60 is connected with the pin 4 of optocoupler U5, one end of resistance R60 is connected with the pin 10 of control chip U8, programming port J1, resistance R53, control chip U8, capacitor C 2, capacitor C 3, crystal oscillator Y1 composition central controller (11), capacitor C 2, capacitor C 3, crystal oscillator Y1 forms clock circuit, for control chip U8 provides work clock signal, one end of capacitor C 2 is connected with one end of crystal oscillator Y1, the other end of capacitor C 2 is connected to power supply 0V, one end of capacitor C 3 is connected with the other end of crystal oscillator Y1, the other end of capacitor C 3 is connected to power supply 0V, one end of crystal oscillator Y1 is connected with the pin 2 of control chip U8, the other end of crystal oscillator Y1 is connected with the pin 3 of control chip U8, the pin 1 of programming port J1 is connected with the pin 4 of control chip U8, be connected to+5V of pin 2 power supply of programming port J1, the pin 3 of programming port J1 is connected to power supply 0V, the pin 4 of programming port J1 is connected with the pin 13 of control chip U8, the pin 5 of programming port J1 is connected with the pin 12 of control chip U8, commutation circuit (12) is by relay K 1, diode D3, inductance L 6, inductance L 7, triode Q5, resistance R65, connector J4, connector J5, connector J6 switches given signal, by resistance R64,Optocoupler U7, resistance R66, diode D4, relay K 2, triode Q6, connector J7 switches main transformer, the pin 6 of control chip U8 is connected with one end of resistance R65, the other end of resistance R65 is connected with triode Q5 base stage, triode Q5 colelctor electrode is connected with the anode of diode D3, the negative electrode of diode D3 is by be connected to+15V of inductance L 6 power supply, the coil of relay K 1 is in parallel with diode D3, triode Q5 emitter stage is connected to power supply 0V by inductance L 7, the pin 1 of relay K 1 is connected with the pin 2 of binding post J4, the pin 4 of relay K 1 is connected with the pin 1 of binding post J4, the pin 2 of relay K 1 is connected with the pin 1 of binding post J5, the pin 5 of relay K 1 is connected with the pin 2 of binding post J5, the pin 3 of relay K 1 is connected with the pin 1 of binding post J6, the pin 6 of relay K 1 is connected with the pin 2 of binding post J6, the pin 7 of control chip U8 is connected with the pin 2 of optocoupler U7, the pin 1 of optocoupler U7 is by be connected to+5V of resistance R64 power supply, the pin 3 of optocoupler U7 is connected to ' 12V power supply, the pin 4 of optocoupler U7 is connected to triode Q6 base stage by resistance R66, triode Q6 colelctor electrode is connected with the anode of diode D3, the negative electrode of diode D3 is connected to ' 12V power supply, the coil of relay K 2 is in parallel with diode D4, triode Q6 emitter stage be connected to power supply ' 0V, the pin 4 of relay K 1 is connected to ' 12V power supply, the pin 6 of relay K 1 is connected with the pin 1 of binding post J7, the pin 2 of binding post J7 be connected to power supply ' 0V, connector J2, resistance R55, optocoupler U4, resistance R57, resistance R58 forms multi-functional conversion input circuit (13), obtain corresponding mode signal and send into control chip U8, the pin 1 of optocoupler U4 by resistance R55 be connected to ' 12V power supply, the pin 2 of optocoupler U4 is connected with the pin 2 of binding post J2, the pin 1 of binding post J2 be connected to power supply ' 0V, the pin 4 of optocoupler U4 is by be connected to+5V of resistance R57 power supply, the pin 3 of optocoupler U4 is connected to power supply 0V, one end of resistance R58 is connected with the pin 4 of optocoupler U4, one end of resistance R58 is connected with the pin 11 of control chip U8.
3. direct-current arc welding according to claim 1, direct current machine drive dual-purpose machine, it is characterized in that: main circuit and control circuit are installed in housing (14), housing (14) is rectangle, handle (22) is installed in a side of housing (14), main switch (15), function diverter switch (16) are set on an end face of housing, and welding current is adjusted knob (17), striking current is adjusted knob (18), joints made by electric welding (19), motor drive sub (20) and three-phase alternating current out splice going splice (21).
CN201410149996.2A 2013-04-17 2014-04-15 The dual-purpose machine of direct-current arc welding, DC motor Driver Active CN103944429B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110665116A (en) * 2019-09-10 2020-01-10 武汉佐盈森科技发展有限公司 Tuning device and method for automatic tuning of output resonant circuit of short wave therapeutic apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103944429B (en) * 2013-04-17 2016-08-17 济南田中工贸有限公司 The dual-purpose machine of direct-current arc welding, DC motor Driver

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1378895A (en) * 2001-04-10 2002-11-13 卢子清 Movable integrated AC-DC welder
CN1557597A (en) * 2004-01-15 2004-12-29 沈阳工业大学 Multifunctional integrated welding and cutting equipment
CN202271084U (en) * 2011-08-31 2012-06-13 浙江友力电机泵业有限公司 Power supply circuit of inverter welding machine
CN203883725U (en) * 2013-04-17 2014-10-15 栾亚伦 DC arc welding machine and DC motor driving dual-purpose machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1378895A (en) * 2001-04-10 2002-11-13 卢子清 Movable integrated AC-DC welder
CN1557597A (en) * 2004-01-15 2004-12-29 沈阳工业大学 Multifunctional integrated welding and cutting equipment
CN202271084U (en) * 2011-08-31 2012-06-13 浙江友力电机泵业有限公司 Power supply circuit of inverter welding machine
CN203883725U (en) * 2013-04-17 2014-10-15 栾亚伦 DC arc welding machine and DC motor driving dual-purpose machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110665116A (en) * 2019-09-10 2020-01-10 武汉佐盈森科技发展有限公司 Tuning device and method for automatic tuning of output resonant circuit of short wave therapeutic apparatus
CN110665116B (en) * 2019-09-10 2023-06-23 武汉佐盈森科技发展有限公司 Tuning device and method for automatic tuning of output resonant circuit of shortwave therapeutic apparatus

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Address after: 250014 Shandong Province, Ji'nan City Lixia District No. 37 South Street food market

Patentee after: Shandong Tanaka Machinery Equipment Co., Ltd.

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