CN201325818Y - Lifting electromagnet rectifier control device controlled by only one alternating current contactor - Google Patents
Lifting electromagnet rectifier control device controlled by only one alternating current contactor Download PDFInfo
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- CN201325818Y CN201325818Y CNU2008201594948U CN200820159494U CN201325818Y CN 201325818 Y CN201325818 Y CN 201325818Y CN U2008201594948 U CNU2008201594948 U CN U2008201594948U CN 200820159494 U CN200820159494 U CN 200820159494U CN 201325818 Y CN201325818 Y CN 201325818Y
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Abstract
The utility model relates to a lifting electromagnet rectifier control device controlled by only one alternating current contactor, which is characterized in that a forward direction excitation circuit of a lifting electromagnet is formed by a three-phase bridge rectification circuit which is composed of an alternating current contactor 1KM and silicon controllable units U1, U2, U3, U4, U5 and U6. A reverse direction excitation circuit is formed by connecting a one-phase alternating current power supply C with a fuse FU3, a silicon controllable unit U7 and a three-phase rectifier bridge and connecting a one-phase alternating current power supply A with a silicon controllable U8 and a positive electrode output terminal. The utility model realizes direct current side contactless control, reduces arc discharge and machinery vibration and is capable of achieving miniaturization. Compared with similar products, the volume of the utility model is reduced by 50% and the costs are decreased by over 20%.
Description
Technical field:
The utility model relates to a kind of lifting electromagnet rectification control convenience of only controlling with an AC contactor.
Background technology:
Hoisting DC electromagnet rectification control convenience adopts DC contactor to carry out forward and reverse excitation switching in DC side mostly at present, thereby realizes suction, blowing and the discharge control of hoisting DC electromagnet.Its shortcoming is that arcing is big, burns out DC contactor easily, and the DC contactor price is expensive, and it is big to take the cupboard space, operational vibration is big, and dry sound is big, damages easily during shipping, and weight is heavier, and oppositely demagnetization current limliting and dropping resistor also are to take up room greatly, burn out demagnetization or the like easily.
Summary of the invention:
It is a kind of only with the lifting electromagnet rectification control convenience of an AC contactor control that the purpose of this utility model is to provide, be intended to solve arcing that the available technology adopting DC contactor brings burns out the problem of DC contactor greatly, easily and when the rectifier bridge silicon control turn-offs can because of the backward energy of lifting electromagnet can not normal turn-off by the silicon control afterflow problem.
The purpose of this utility model is that the circuit that is made of following technical proposal is realized.
The technical solution of the utility model one is: a kind of lifting electromagnet rectification control convenience of only controlling with an AC contactor, it is characterized in that: by thyristor U1, U2, U3, U4, U5, the U6 thyristor is formed three-phase bridge rectifier circuit, three main contacts of AC contactor 1KM connect respectively the centre of each brachium pontis of three-phase commutation bridge and three-phase alternating-current supply access point below, the positive terminal P1 of three-phase commutation bridge connects the end of diverter RS1, the other end of diverter RS1 connects an end of lifting electromagnet as positive pole output P, the negative pole end N of three-phase commutation bridge exports the other end that connects lifting electromagnet as negative pole, constitutes the forward energizing circuit of lifting electromagnet; Connect quick acting fuse FU3 by a cross streams power supply C and connect the end that silicon control U7 connects the negative pole end N connection lifting electromagnet of three-phase commutation bridge, connect silicon control U8 by another cross streams power supply A and connect the other end that cathode output end P connects lifting electromagnet, constitute the reverse energizing circuit of lifting electromagnet.
The technical solution of the utility model two is: a kind of lifting electromagnet rectification control convenience of only controlling with an AC contactor, it is characterized in that: by thyristor U1, U3, U4, U6 forms the two-phase bridge rectifier circuit, two main contacts of AC contactor 1KM connect respectively the centre of each brachium pontis of two phase commit bridge and two-phase alternating current power supply access point below, the positive terminal P1 of two phase commit bridge connects the end of diverter RS1, the other end of diverter RS1 connects an end of lifting electromagnet as positive pole output P, the negative pole end N of two phase commit bridge exports the other end that connects lifting electromagnet as negative pole, constitutes the forward energizing circuit of lifting electromagnet; Connect quick acting fuse FU3 by a cross streams power supply C and connect the end that silicon control U7 connects the negative pole end N connection lifting electromagnet of two phase commit bridge, connect silicon control U8 by another cross streams power supply A and connect the other end that cathode output end P connects lifting electromagnet, constitute the reverse energizing circuit of lifting electromagnet.
The technical solution of the utility model three is: a kind of lifting electromagnet rectification control convenience of only controlling with an AC contactor, it is characterized in that: connect quick acting fuse FU1 by a cross streams power supply A and connect silicon control U1, connect quick acting fuse FU2 by another cross streams power supply B and connect silicon control U2, by U1, U2 forms the end of the positive terminal P1 connection diverter RS1 of two-phase half-wave rectifying circuit, the other end of diverter RS1 connects an end of lifting electromagnet as positive pole output P, a main contact connection silicon control U3 connection cathode output end N who is connected quick acting fuse FU3 connection AC contactor 1KM by third phase source of AC C exports an end that connects lifting electromagnet as negative pole, constitutes the forward energizing circuit of lifting electromagnet; Connect quick acting fuse FU3 by a cross streams power supply C and connect the end that silicon control U4 connects negative pole end N connection lifting electromagnet, connect quick acting fuse FU1 by another cross streams power supply A and connect the other end that silicon control U5 connection cathode output end P connects lifting electromagnet, constitute the reverse energizing circuit of lifting electromagnet.
U4 of the present utility model, U5, U6 are thyristor or rectifier diode.
The utility model is controlled cut-offfing of forward excitation and reverse excitation by control silicon control gate pole power supply, disconnection and the silicon controlled of controlling the silicon control afterflow by cut-offfing of control AC contactor 1KM turn-off, opening, breaking and control arcing opportunity by control AC contactor 1KM, realize the control of DC side contact pointless, reduced arcing and mechanical vibration.The utility model can be realized miniaturization, reduces volume 50% with comparing with product, and cost-cutting is more than 20%.
Description of drawings:
Fig. 1 is the electrical schematic diagram of three-phase bridge rectification mode;
Fig. 2 is the electrical schematic diagram of two-phase bridge rectifier mode;
Fig. 3 is the electrical schematic diagram of two phase half-wave rectification modes.
The specific embodiment:
As shown in Figure 1, connect AC contactor 1KM during suction earlier,, arcing can not be arranged under the no current situation so the connection of 1KM is connected; And then connect 1KA and connect control power supply (U4, U5, when U6 is silicon control) for silicon control gate poles such as G1, G2, G3, G4 or connect control power supply (U4, U5, when U6 is diode) for silicon control G1 gate pole, then rectifier bridge output 220V direct current (DC) is given lifting electromagnet forward excitation by P1-P one lifting electromagnet-N; Disconnect above gate pole power supply during opposite blowing, then stop to lifting electromagnet forward excitation; At this moment the backward energy of lifting electromagnet carries out afterflow by R4 and U9 on the one hand, the silicon control afterflow of not turn-offing on the other hand by rectifier bridge, possible rectifier bridge silicon control not necessarily turn-offs, but it is very little through flowing through its electric current after the time-delay, at this moment disconnecting 1KM can disconnect afterflow, disconnects rectifier bridge, disconnect silicon control, and electric current is very little when disconnecting, so arcing is very little.
As shown in Figure 2: connect AC contactor 1KM during suction earlier, so the connection of 1KM is connected under the no current situation, arcing can not be arranged, and then connection 1KA connects control power supply (when U4, U6 are silicon control) to gate poles such as G1, G2, G4 or control power supply (when U4, U6 are diode) for the connection of G1 gate pole, then rectifier bridge output 220V direct current (DC) is given lifting electromagnet forward excitation by P1-P-lifting electromagnet-N, disconnect above gate pole power supply during opposite blowing, then stop to lifting electromagnet forward excitation; At this moment the backward energy of lifting electromagnet carries out afterflow by R4 and U9 on the one hand, the silicon control afterflow of not turn-offing on the other hand by rectifier bridge, possible rectifier bridge not necessarily turn-offs, but it is very little through flowing through its electric current after the time-delay, at this moment disconnecting 1KM can disconnect afterflow, disconnects rectifier bridge, disconnect silicon control, and electric current is very little when disconnecting, so arcing is very little.
As shown in Figure 3: connect AC contactor 1KM during suction earlier, so the connection of 1KM is connected under the no current situation, arcing can not be arranged, and then connection 1KA connects control power supply (when U3 is silicon control) to gate poles such as G1, G2, G3 or control power supply (when U3 is diode) for G1, the connection of G2 gate pole, then two tunnel half wave rectification output 250V direct current (DC) is given lifting electromagnet forward excitation by P1-P-lifting electromagnet-N, disconnect above gate pole power supply during opposite blowing, then stop to lifting electromagnet forward excitation; At this moment the backward energy of lifting electromagnet carries out afterflow by R4 and U6 on the one hand, on the other hand by U1, U2, U3 afterflow, possible U1, U2, U3 not necessarily turn-off, but it is very little through the electric current that flows through them after the time-delay, at this moment disconnecting 1KM can disconnect afterflow, disconnects rectifier bridge, disconnect silicon control, and electric current is very little when disconnecting, so arcing is very little.When closing to have no progeny, AC contactor 1KM just can enter reverse excitation process, as Fig. 1, Fig. 2, shown in Figure 3, add the control power supply for gate poles such as G5, G6, then the 380V alternating current carries out reverse excitation by unidirectional half wave rectification by N-lifting electromagnet-P, and time-delay 1-3 stopped after second.
Claims (4)
1, a kind of lifting electromagnet rectification control convenience of only controlling with an AC contactor, it is characterized in that: by thyristor U1, U2, U3, U4, U5, the U6 thyristor is formed three-phase bridge rectifier circuit, three main contacts of AC contactor 1KM connect respectively the centre of each brachium pontis of three-phase commutation bridge and three-phase alternating-current supply access point below, the positive terminal P1 of three-phase commutation bridge connects the end of diverter RS1, the other end of diverter RS1 connects an end of lifting electromagnet as positive pole output P, the negative pole end N of three-phase commutation bridge exports the other end that connects lifting electromagnet as negative pole, constitutes the forward energizing circuit of lifting electromagnet; Connect quick acting fuse FU3 by a cross streams power supply C and connect the end that silicon control U7 connects the negative pole end N connection lifting electromagnet of three-phase commutation bridge, connect silicon control U8 by another cross streams power supply A and connect the other end that cathode output end P connects lifting electromagnet, constitute the reverse energizing circuit of lifting electromagnet.
2, a kind of lifting electromagnet rectification control convenience of only controlling with an AC contactor, it is characterized in that: by thyristor U1, U3, U4, U6 forms the two-phase bridge rectifier circuit, two main contacts of AC contactor 1KM connect respectively the centre of each brachium pontis of two phase commit bridge and two-phase alternating current power supply access point below, the positive terminal P1 of two phase commit bridge connects the end of diverter RS1, the other end of diverter RS1 connects an end of lifting electromagnet as positive pole output P, the negative pole end N of two phase commit bridge exports the other end that connects lifting electromagnet as negative pole, constitutes the forward energizing circuit of lifting electromagnet; Connect quick acting fuse FU3 by a cross streams power supply C and connect the end that silicon control U7 connects the negative pole end N connection lifting electromagnet of two phase commit bridge, connect silicon control U8 by another cross streams power supply A and connect the other end that cathode output end P connects lifting electromagnet, constitute the reverse energizing circuit of lifting electromagnet.
3, a kind of lifting electromagnet rectification control convenience of only controlling with an AC contactor, it is characterized in that: connect quick acting fuse FU1 by a cross streams power supply A and connect silicon control U1, connect quick acting fuse FU2 by another cross streams power supply B and connect silicon control U2, by U1, U2 forms the end of the positive terminal P1 connection diverter RS1 of two-phase half-wave rectifying circuit, the other end of diverter RS1 connects an end of lifting electromagnet as positive pole output P, a main contact connection silicon control U3 connection cathode output end N who is connected quick acting fuse FU3 connection AC contactor 1KM by third phase source of AC C exports an end that connects lifting electromagnet as negative pole, constitutes the forward energizing circuit of lifting electromagnet; Connect quick acting fuse FU3 by a cross streams power supply C and connect the end that silicon control U4 connects negative pole end N connection lifting electromagnet, connect quick acting fuse FU1 by another cross streams power supply A and connect the other end that silicon control U5 connection cathode output end P connects lifting electromagnet, constitute the reverse energizing circuit of lifting electromagnet.
4, according to claim 1 only with the lifting electromagnet rectification control convenience of an AC contactor control, it is characterized in that: U4, U5, U6 are thyristor or rectifier diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201594948U CN201325818Y (en) | 2008-11-28 | 2008-11-28 | Lifting electromagnet rectifier control device controlled by only one alternating current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201594948U CN201325818Y (en) | 2008-11-28 | 2008-11-28 | Lifting electromagnet rectifier control device controlled by only one alternating current contactor |
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| Publication Number | Publication Date |
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| CN201325818Y true CN201325818Y (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201594948U Expired - Fee Related CN201325818Y (en) | 2008-11-28 | 2008-11-28 | Lifting electromagnet rectifier control device controlled by only one alternating current contactor |
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| CN (1) | CN201325818Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897642A (en) * | 2011-07-26 | 2013-01-30 | 宝山钢铁股份有限公司 | Capacitor inversion type magnetizing and demagnetizing lifting electromagnet |
| CN102897643A (en) * | 2011-07-26 | 2013-01-30 | 宝山钢铁股份有限公司 | Electromagnet coil tap type magnetizing and demagnetizing lifting electromagnet |
-
2008
- 2008-11-28 CN CNU2008201594948U patent/CN201325818Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897642A (en) * | 2011-07-26 | 2013-01-30 | 宝山钢铁股份有限公司 | Capacitor inversion type magnetizing and demagnetizing lifting electromagnet |
| CN102897643A (en) * | 2011-07-26 | 2013-01-30 | 宝山钢铁股份有限公司 | Electromagnet coil tap type magnetizing and demagnetizing lifting electromagnet |
| CN102897643B (en) * | 2011-07-26 | 2014-10-01 | 宝山钢铁股份有限公司 | Electromagnet coil tap type magnetizing and demagnetizing lifting electromagnet |
| CN102897642B (en) * | 2011-07-26 | 2014-10-01 | 宝山钢铁股份有限公司 | Capacitor inversion type magnetizing and demagnetizing lifting electromagnet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20111128 |