CN2432200Y - Control device of electromagnetic magnet disc - Google Patents
Control device of electromagnetic magnet disc Download PDFInfo
- Publication number
- CN2432200Y CN2432200Y CN 00212506 CN00212506U CN2432200Y CN 2432200 Y CN2432200 Y CN 2432200Y CN 00212506 CN00212506 CN 00212506 CN 00212506 U CN00212506 U CN 00212506U CN 2432200 Y CN2432200 Y CN 2432200Y
- Authority
- CN
- China
- Prior art keywords
- contactor
- circuit
- lifting magnet
- contact
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000005347 demagnetization Effects 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000005285 magnetism related processes and functions Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Relay Circuits (AREA)
Abstract
The utility model provides a controlling means of electromagnetism magnet disc mainly comprises main circuit and control circuit two parts, in the main circuit by automatic switch DZ and ac contactor C control, parallelly connected two sets of three-phase rectifier circuit by two ac contactor C1, C2 difference control, simultaneously with the electromagnetism magnet disc according to forward and backward coupling respectively in two sets of rectifier circuit correspondingly constitute for magnetic circuit and demagnetization return circuit. The utility model discloses not only the circuit is simple, reasonable in design, and the cost is low, the maintenance of being convenient for, other parts of loss of burning contactor moreover, life can prolong tens of times, greatly reduced the maintenance cost of equipment, improved the rate of opening of equipment.
Description
The utility model relates to a kind of circuit control device, especially a kind of control setup that is used to lifting magnet to offer magnetic and degaussing.
At present, the lifting magnet that smelter uses, it gives magnetic and degaussing great majority is after adopting rectifier transformer through the diode three phase rectifier, to be undertaken by positive and negative two groups of DC contactor direct controls of working in coordination again.Because lifting magnet is a big inductive load, in the moment of giving magnetic and degaussing, DC contactor moving, decide on the contact can the very big arc light of generation, this direct current arc light is difficult to be knocked out, very harmful, can not only the scaling loss probe of contactor, and can also the scaling loss arcing chamber, parts around the diminution coil, contact bracket etc., shortened service life of contactless switch greatly.Moreover, this direct current arc light also has interference to electronic equipment on every side, and some electronic equipments around causing can not normally move.Although the thyristor non-contact controlling device that works out at present can overcome some above-mentioned shortcomings, but exist circuit complexity, cost height, inconvenient maintenance, poor anti jamming capability, and problem such as can't on crane in bridge type, use.
The purpose of this utility model is to provide that a kind of circuit is simple, reasonable in design, cost is low, is convenient to maintenance, and give the moment of magnetic and degaussing in control, can make the arc light moving, that decide to produce on the contact of contactless switch little, the control setup of the lifting magnet that extinguishes easily.
The purpose of this utility model is to realize like this, the control setup of this lifting magnet mainly is made up of power circuit and control circuit two parts, in the power circuit of being controlled by automatic switch DZ and AC contactor C, two groups of rectified three-phase circuits of controlling respectively by two AC contactor C1, C2 in parallel, simultaneously with lifting magnet respectively by forward with oppositely be connected in two groups of rectifying circuits and correspondingly constitute to magnetic loop and degaussing loop.By control to each AC contactor, make lifting magnet carry out to magnetic and degaussing according to people's requirement, realized the purpose of ferromagnetic materials such as lifting magnet loading and unloading steel.
Because the utility model has been cancelled rectifier transformer, to control simultaneously lifting magnet has again made AC contactor into for the DC contactor of magnetic and degaussing, and it is connected in the alternating current circuit lifting magnet is controlled indirectly, it is little to have made full use of AC contactor arc light in alternating current circuit, the characteristics of extinguishing easily, not only circuit is simple, reasonable in design, cost is low, be convenient to maintenance, and other parts of not burning contactless switch, can prolong tens of times service life, greatly reduces the maintenance cost of equipment.Improved the rate of starting of equipment, guaranteed to produce and carry out smoothly.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is schematic circuit diagram of the present utility model.
As shown in Figure 1, the control setup of lifting magnet of the present utility model mainly is made up of power circuit and control circuit two parts, in the power circuit of being controlled by automatic switch DZ and AC contactor C, two groups of rectified three-phase circuits of controlling respectively by two AC contactor C1, C2 in parallel, simultaneously with lifting magnet respectively by forward with oppositely be connected in two groups of rectifying circuits and correspondingly constitute to magnetic loop and degaussing loop.
As shown in Figure 1, the utility model in the degaussing loop, connect two resistance R 1, R3, and reconstruct a natural discharge loop with lifting magnet M by the back that links with resistance R 2.
As shown in Figure 1, in power circuit of the present utility model, three main contacts of AC contactor C1 and the another one main contact of rectifier diode D1, D2, D3 and lifting magnet M and AC contactor C1 have constituted gives magnetic loop; Three main contacts of AC contactor C2 and the another one main contact of rectifier diode D4, D5, D6 and resistance R 1, lifting magnet M, resistance R 3 and AC contactor C2 have constituted the degaussing loop.
As shown in Figure 1, in each rectified three-phase circuit, with the rectifier diode of connecting respectively of three main contacts in the AC contactor, the other end of three rectifier diodes merges into a bit (common cathode or common anode form) and is connected on the lifting magnet M, and is connected to a certain loop of formation of going up mutually of three-phase alternating-current supply through the another one main contact in the AC contactor.
As shown in Figure 1, diode in each rectified three-phase circuit is the common cathode connection type, and the contact of deciding that contact and this AC contactor be used to control any one main contact of three rectifier diodes of deciding that wherein is used for controlling the AC contactor main contact of rectifying circuit negative pole links.Similarly, diode in each rectified three-phase circuit also can be connected into the form of common anode, wherein be used for controlling rectification circuit anode the AC contactor main contact decide any one main contact that contact and this AC contactor be used to control three rectifier diodes decide contact link (figure slightly).
In conjunction with Fig. 1 working process of the present utility model is underdrawed more below:
1) starting process: closed automatic switch DZ, press starter button QA, contactless coil C energising is connected on the normally open contact C closure in the power circuit.
2) give the magnetic process: give magnet contactor K in the closed control circuit, contactless coil C1 energising, main contact C1 closure in the power circuit, lifting magnet M energising, corresponding normal opened contact C1 closure among the while control circuit contactless switch C1, normally closed contact C1 disconnects, the normal opened contact closure of contactless switch C1 makes the SJ of slug relay switch on, the normal opened contact closure of the corresponding SJ of slug relay, normally closed contact C1 disconnects and is used to guarantee that contactless coil C2 is in off-position, finishes for the magnetic process.
3) demagnetization process: disconnect and to give magnet contactor K in the control circuit, contactless coil C1 outage, main contact C1 in the power circuit disconnects, lifting magnet M outage, corresponding normal opened contact C1 disconnects among the control circuit contactless switch C1 simultaneously, normally closed contact C1 closure, and normally closed contact C1 closure gets contactless coil C2, main contact C2 closure in the major loop, lifting magnet M oppositely switches on, and demagnetization process begins, and normal opened contact C1 disconnects, the SJ of slug relay is trigger just, after time-delay after a while, corresponding contact SJ disconnects, contactless coil C2 outage, main contact C2 in the power circuit disconnects, and demagnetization process finishes.The length of time relay sj delay time can be carried out corresponding adjusting according to differences such as the size of lifting magnet, models.
4) power process: press stop button TA, contactless switch C outage, its main contact disconnects, and circuit has a power failure.
5) defencive function: when power circuit excess current, short circuit or control circuit occur and short circuit occurs, over current relay 1GJL, 2GJL action, contactless switch C outage, or automatic switch DZ tripping operation outage are cut off the electricity supply, and circuit is protected.Control circuit is realized protection by RD1, RD2.
Claims (5)
1, a kind of control setup of lifting magnet, mainly form by power circuit and control circuit two parts, it is characterized in that in the power circuit of being controlled by automatic switch DZ and AC contactor C, two groups of rectified three-phase circuits of controlling respectively by two AC contactor C1, C2 in parallel, simultaneously with lifting magnet respectively by forward with oppositely be connected in two groups of rectifying circuits and correspondingly constitute to magnetic loop and degaussing loop.
2, the control setup of lifting magnet according to claim 1 is characterized in that two resistance R 1 of series connection, R3 in the degaussing loop, and reconstructs a natural discharge loop by the back that links with resistance R 2 with lifting magnet M.
3, the control setup of lifting magnet according to claim 1 and 2, it is characterized in that in every group of rectified three-phase circuit, with the rectifier diode of connecting respectively of three main contacts in the AC contactor, the other end of three rectifier diodes merges into a bit and is connected on the lifting magnet M, and is connected to a certain loop of formation of going up mutually of three-phase alternating-current supply through the another one main contact in the AC contactor.
4, the control setup of lifting magnet according to claim 3, it is characterized in that the diode in every group of rectified three-phase circuit is the common cathode mode of connection, the contact of deciding that contact and this AC contactor be used to control any one main contact of three rectifier diodes of deciding that wherein is used for controlling the AC contactor main contact of rectifying circuit negative pole links.
5, the control setup of lifting magnet according to claim 3, it is characterized in that the diode in every group of rectified three-phase circuit is common anode connection mode, the contact of deciding that contact and this AC contactor be used to control any one main contact of three rectifier diodes of deciding that wherein is used for controlling the AC contactor main contact of rectification circuit anode links.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00212506 CN2432200Y (en) | 2000-07-03 | 2000-07-03 | Control device of electromagnetic magnet disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00212506 CN2432200Y (en) | 2000-07-03 | 2000-07-03 | Control device of electromagnetic magnet disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2432200Y true CN2432200Y (en) | 2001-05-30 |
Family
ID=33578998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00212506 Expired - Fee Related CN2432200Y (en) | 2000-07-03 | 2000-07-03 | Control device of electromagnetic magnet disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2432200Y (en) |
-
2000
- 2000-07-03 CN CN 00212506 patent/CN2432200Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |