CN201378274Y - Automatic emergency lifting device when in PLC breakdown - Google Patents
Automatic emergency lifting device when in PLC breakdown Download PDFInfo
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- CN201378274Y CN201378274Y CN200920068749U CN200920068749U CN201378274Y CN 201378274 Y CN201378274 Y CN 201378274Y CN 200920068749 U CN200920068749 U CN 200920068749U CN 200920068749 U CN200920068749 U CN 200920068749U CN 201378274 Y CN201378274 Y CN 201378274Y
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Abstract
The utility model relates to an automatic emergency lifting device when in PLC breakdown stop, which solves the problem of the potential safety hazard brought by the breakdown response time existing in manpower lifting when the PLC breakdown stop of working devices such as an oxygen lance, a spray gun and the like is controlled. In the device, a PLC breakdown stop relay circuit is connected on an ascending and descending contactor circuit used for controlling the lifting of the working devices in parallel in the existing PLC control loop; the ascending and descending contactor circuit is formed in a way that the PLC breakdown stop relay circuit is connected with a spray gun safe-parking limit switch and a pair of normally-closed contacts of a PLC running stop supervisory relay in series; in addition, an ascending contactor circuit is connected with a pair of normally-closed contacts of the PLC breakdown stop relay circuit. The device can supervise and automatically judge the PLC running state; once the abnormal stop is caused by the PLC breakdown, the device can lead the working devices to realize the lifting function, has the function of emergency protection and effectively prevents the accidents such as burst explosion and falling and the like of the working devices when the system breakdown stop is controlled.
Description
Technical field
The emergency treatment plant that the utility model relates to a kind of Electrified Transmission control device fault when taking place, the automatic emergency lifting gear belongs to automated control technology when referring in particular to a kind of PLC disorderly closedown of controlling oxygen rifle, spray gun.
Background technology
The emergency control of existing Electrified Transmission control device and protective device all are to increase the new drive controlling protective device of a cover on the basis of original normal control.And the drive unit that increases all is a kind of emergency treatment plant under the situation of original driven equipment " dead electricity ".Main ripe the having of this type of emergency treatment plant: hydraulic pressure (pneumatic) emergency control protective device on the basis of original electric drive system, increases the urgent lifting means of a cover pneumatic (or hydraulic pressure) and realizes urgent defencive function.
The urgent lifting means of one cover pneumatic (or hydraulic pressure) comprises pneumatic (or hydraulic pressure) motor, electric-hydraulic gear detent and pneumatic (or hydraulic pressure) control device and pneumatic (or hydraulic pressure) accumulator.Power supply " dead electricity " or run into emergency condition and electric drive system breaks down and makes working equipment (oxygen rifle, spray gun etc.) in the time of can't normally carrying rifle externally, utilize ups power as the urgent control power supply that promotes control system, operating personnel are by the handle on the manipulation operations panel, control the solenoid directional control valve in pneumatic (or hydraulic pressure) lifting gear system, control energy stored in pneumatic (or hydraulic pressure) accumulator, make electric-hydraulic gear releasing of brake, promote the oxygen rifle to home with pneumatic (or hydraulic pressure) power, reach the purpose of avoiding accident.
This hydraulic pressure (pneumatic) emergency control protective device major defect has:
(1) adopt the urgent elevator system of hydraulic pressure (pneumatic) that an artificial failure response time is arranged, when promptly normal control is broken down, need artificial judgement, the urgent elevator system of this cover hydraulic pressure (pneumatic) is started in artificial then going.So face exists very big potential safety hazard during this period, if artificially start not prompt enoughly, hidden danger just may take place.
(2) adopting the urgent elevator system of hydraulic pressure (pneumatic) that one cover specific hydraulic (pneumatic) motor kinematic train must be installed realizes.This control protection all requires to increase the new driving arrangement of a cover, and investment is big, and maintenance workload is big, the maintenance cost height.
(3) prior art is on the basis of original electric drive system, need to increase a whole set of urgent opertaing device that promotes, therefore it does not possess under the prerequisite that does not increase a whole set of urgent lifting opertaing device, by electric and mechanical ingenious combination urgent enhanced feature is incorporated in original electric actuator and the mechanical driving device, the urgent function that promotes of realization makes it to combine together, thereby can not give full play to the usefulness of original electric actuator and mechanical driving device, so the existing equipment utilization factor does not improve.
The working equipment that the Electrified Transmission control device is controlled (oxygen rifle, spray gun etc.) in processing procedure, the cancel closedown in case PLC breaks down, PLC can not send control signals such as normal lifting to working equipment.The pulvis blowing valve of spray gun will be closed owing to the PLC disorderly closedown this moment, and spray gun can't promote and cause the spray gun injection hole to be stopped up by heating molten steel.The oxygen gun cooling water valve will cut out, and the undesired control of oxygen flow can cause the danger of blast in the oxygen rifle.So automatic lifting protective device when needing a cover PLC disorderly closedown.
The utility model content
The purpose of this utility model is in order to solve the problem that prior art exists; provide a kind of PLC to break down and to promote by automatic emergency when shutting down, automatic emergency lifting gear when eliminating the PLC disorderly closedown of the artificial potential safety hazard that failure response time was brought at working equipments such as control oxygen rifle, spray guns.
The purpose of this utility model is achieved through the following technical solutions:
Automatic emergency lifting gear during a kind of PLC disorderly closedown comprises the control major loop and the PLC control loop thereof of the lifting of Electrified Transmission control device Control work equipment, wherein,
The structure of described control major loop is: the lifting motor M1 of lifting working equipment position, connect respectively a pair of in the 3rd pair of normally opened contact of 1-of contactless for hoisting KM1 of its three-phase input end, the a pair of back of connecting respectively again in the 3rd pair of normally opened contact of 1-of an electrothermal relay Q1 is connected with three-phase supply, wherein the 3rd pair of normally opened contact of the 1-of contactless for hoisting KM1 is corresponding with the 3rd pair of normally opened contact of 1-of decline contactor KM2 respectively in parallel, and the two pairs of normally opened contacts of two couples of contactless for hoisting KM1 therein and the common junction that two pairs of normally opened contacts of electrothermal relay Q1 are connected are connected the band brake apparatus of working equipment respectively by two pairs of normally opened contacts of detent contactor KM3;
The structure of described PLC control loop is made up of the two ends that operate as normal circuit and on-the-spot anxious power failure road are connected in parallel in the mains ac power supply, wherein, described operate as normal circuit is composed in series by mains supply switch Q2 and relay circuit, this relay circuit is become by following column circuit banks: rise and the decline contactor circuit, this circuit by the contactless for hoisting circuit be composed in series with an on-the-spot anxious a pair of normally opened contact that stops relay K 3 after the decline contactor circuit is in parallel, wherein, the contactless for hoisting circuit is by contactless for hoisting KM1, rising stops a pair of normally closed contact of limit switch SQ1 automatically and a pair of normally opened contact of one the 1st auxiliary reclay K1 is composed in series; The decline contactor circuit by decline contactor KM2, decline stops a pair of normally closed contact of limit switch SQ2 automatically and a pair of normally opened contact of one the 2nd auxiliary reclay K2 is composed in series; The detent relay circuit in parallel with rising and decline contactor circuit, this circuit is composed in series by the 3rd pair of normally opened contact of detent relay K M3 and contactless for hoisting KM1, the 3rd pair of normally opened contact of the 3rd couple of normally opened contact decline contactor also in parallel KM2 of this contactless for hoisting KM1; The 1st auxiliary reclay circuit in parallel with rising and decline contactor circuit, this circuit is composed in series by a pair of normally opened contact of the 1st auxiliary reclay K1 and the 6th auxiliary reclay K6; The 2nd auxiliary reclay circuit in parallel with rising and decline contactor circuit, this circuit is composed in series by a pair of normally opened contact of the 2nd auxiliary reclay K2 and the 7th auxiliary reclay K7; The digital output module " Q11.0 " that above-mentioned the 6th auxiliary reclay K6 and the 7th auxiliary reclay K7 are connected to PLC reaches " Q11.1 " end; The on-the-spot anxious relay K 3 of stopping of the anxious power failure route in described scene is composed in series with on-the-spot scram button, it is characterized in that:
A PLC disorderly closedown relay circuit in parallel with described rising and decline contactor circuit, this circuit is composed in series by PLC disorderly closedown relay K 4 and a pair of normally closed contact of spray gun emergency position limit switch ST1 and a pair of normally closed contact of PLC operation stopping supervisory relay K5, and described PLC operation stopping supervisory relay K5 is connected " Q10.0 " end of the digital output module of PLC;
The a pair of normally opened contact of the two ends of a pair of normally opened contact of the 1st auxiliary reclay K1 in described contactless for hoisting circuit PLC disorderly closedown in parallel relay K 4.
The beneficial effects of the utility model:
This device is by monitoring the PLC running status; in case PLC breaks down; cause cancel closedown; this device will be judged automatically, in conjunction with original electric lifting transmission control device, control without PLC; make working equipment (oxygen rifle, spray gun etc.) realize enhanced feature; play urgent protective effect, eliminate artificial failure response time, eliminate the potential safety hazard of bringing during this period of time.Automatic emergency when this device has just been realized the PLC disorderly closedown by the electric control loop that increases common relay composition promotes protective device, and investment cost is few, and maintenance cost is also extremely low, has also improved the utilization factor of existing equipment simultaneously.
In the PLC of working equipments such as control oxygen rifle, spray gun, use this device; even PLC is owing to fault is shut down; working equipment can not fall or owing to protective mediums such as source of the gas cut off accident such as blast owing to deadweight yet; but working equipment is risen to home, prevent burst blast and the accident such as fall of working equipment when the control system fault
For further specifying above-mentioned purpose of the present utility model, design feature and effect, the utility model is elaborated below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the control major loop schematic diagram of Electrified Transmission control device Control work equipment lifting.
Fig. 2 is a PLC control loop schematic diagram in the existing Electrified Transmission control device.
Fig. 3 is a PLC control loop schematic diagram in the Electrified Transmission control device in the utility model.
Fig. 4 is a PLC wiring diagram in the Electrified Transmission control device in the utility model, and wherein: 4A is PLC modular structure figure; 4B is digital output module " DO1 " wiring diagram.
Embodiment
The embodiment of automatic emergency lifting gear is elaborated during to PLC disorderly closedown of the present utility model below in conjunction with the accompanying drawing of embodiment.
Referring to Fig. 1, Fig. 1 is the control major loop schematic diagram of Electrified Transmission control device Control work equipment lifting.In the lifting control major loop of the working equipment (routine spray gun) of Electrified Transmission control device control, three-phase input end (the U1 of the lifting motor M1 of lifting spray gun position, V1, W1) connect respectively the 3rd couple of normally opened contact (KM1_1-2 of 1-of contactless for hoisting KM1 of every end, 3-4, a pair of 5-6), the 3rd couple of normally opened contact (Q1_1-2 of 1-of an electrothermal relay (fuse) Q1 again connects respectively, 3-4, a pair of back and three-phase supply (L1 5-6), L2, L3) connect, wherein the 3rd pair of normally opened contact of the 1-of contactless for hoisting KM1 respectively with the 3rd couple of normally opened contact (KM2_1-2 of 1-of decline contactor KM2,3-4,5-6) corresponding in parallel.The common junction (X, Y) of two pairs of normally opened contacts (KM1_1-2,5-6) of two couples of contactless for hoisting KM1 therein and two pairs of normally opened contacts (Q1_1-2,5-6) of electrothermal relay Q1 series connection is connected the band brake apparatus B of spray gun respectively by two pairs of normally opened contacts (KM3_1-2,3-4) of detent contactor KM3, band brake apparatus B is connected to form by rectifier Re and detent Ar.
Referring to Fig. 2, Fig. 2 is a PLC control loop schematic diagram in the existing Electrified Transmission control device.
The PLC control loop is made up of the two ends that operate as normal circuit and on-the-spot anxious power failure road are connected in parallel in the mains ac power supply, wherein:
The operate as normal circuit is composed in series by mains supply switch Q2 and relay circuit, and this relay circuit is become by following column circuit banks:
Rise and the decline contactor circuit, by the contactless for hoisting circuit be composed in series with an on-the-spot anxious a pair of normally opened contact (K3_13-14) that stops relay K 3 after the decline contactor circuit is in parallel, wherein, the contactless for hoisting circuit by contactless for hoisting KM1, rising stops a pair of normally closed contact (1-2) of limit switch SQ1 automatically and a pair of normally opened contact (K1_13-14) of one the 1st auxiliary reclay K1 is composed in series; The decline contactor circuit by decline contactor KM2, decline stops a pair of normally closed contact (1-2) of limit switch SQ2 automatically and a pair of normally opened contact (K2_13-14) of one the 2nd auxiliary reclay K2 is composed in series;
The detent relay circuit in parallel with rising and decline contactor circuit, the 3rd pair of normally opened contact (KM1_13-14) by detent relay K M3 and contactless for hoisting KM1 is composed in series, the 3rd pair of normally opened contact (KM2_13-14) of the 3rd pair of normally opened contact (KM1_13-14) the decline contactor also in parallel KM2 of this contactless for hoisting KM1;
The 1st auxiliary reclay circuit in parallel with rising and decline contactor circuit is composed in series by a pair of normally opened contact (K6_13-14) of the 1st auxiliary reclay K1 and the 6th auxiliary reclay K6;
The 2nd auxiliary reclay circuit in parallel with rising and decline contactor circuit is composed in series by a pair of normally opened contact (K7_13-14) of the 2nd auxiliary reclay K2 and the 7th auxiliary reclay K7.
" Q11.0 " that above-mentioned the 6th auxiliary reclay K6 and the 7th auxiliary reclay K7 are connected to the digital output module " DO1 " of PLC reaches " Q11.1 " end (seeing shown in Figure 4).
The on-the-spot anxious relay K 3 of stopping of on-the-spot anxious power failure route is composed in series with on-the-spot scram button JZE.
Fig. 3 is a PLC control loop schematic diagram in the Electrified Transmission control device in the utility model.
The automatic emergency lifting gear is that the operate as normal circuit mechanism in the above-mentioned existing P LC control loop has been carried out following improvement during PLC disorderly closedown of the present utility model:
A PLC disorderly closedown relay circuit in parallel with described rising and decline contactor circuit, this circuit is composed in series by PLC disorderly closedown relay K 4 and a pair of normally closed contact (1-2) of spray gun emergency position limit switch ST1 and a pair of normally closed contact (K5_21-22) of PLC operation stopping supervisory relay K5.Described spray gun emergency position limit switch ST1 is installed in the lower end that described rising stops limit switch SQ1 automatically.Its effect is: when promptly promoting, spray gun can stop after reaching this home automatically.
The a pair of normally opened contact (K4_13-14) of a pair of normally opened contact (K1_13-14) two ends of the 1st auxiliary reclay K1 in contactless for hoisting circuit PLC disorderly closedown in parallel relay K 4.
Fig. 4 is a PLC wiring diagram in the Electrified Transmission control device in the utility model, and wherein: 4A is PLC modular structure figure; 4B is digital output module " DO1 " wiring diagram.
PLC comprises power module, CPU module, communication module, digital input module " DI1 ", digital output module " DO1 ", " PLC operation stopping supervisory relay K5, the 6th auxiliary reclay K6, the 7th auxiliary reclay K7.
Above-mentioned PLC operation stopping supervisory relay K5 is connected " Q10.0 " end of the digital output module " DO1 " of PLC.
Below the various duties of this device are described.
The PLC control system just often, the state of a control of spray gun is as follows:
When on-site manual (semiautomatic control of human-machine operation picture) descends (or rising) row, PLC receives the manual operation rising operating instruction of execute-in-place case or human-machine operation picture, PLC output decline (rising) " Q11.1 (Q11.0) " run signal makes contactor KM2 coil electricity, and the 1-3 of contactor KM2 is to normally opened contact (KM2_1-2,3-4,5-6) closure; The 4th pair of normally opened contact of while KM2 (two pairs of normally opened contacts (KM3_1-2,3-4) closure of KM2_13-13 closure, detent contactor KM3 coil electricity, KM3, rectifier Re connects alternating current input power supplying, and detent Ar is in releasing orientation; Lifting motor M1 energising, spray gun descend and move.When spray gun arrives desired location, instruction PLC output decline (rising) " Q11.1 (Q11.0) " signal manual out of service that PLC receives execute-in-place case or human-machine operation picture blocks, decline contactor KM2 coil blackout, the 1-3 of KM2 disconnects normally opened contact (KM2_1-2,3-4,5-6); The 4th pair of normally opened contact (KM2_13-14) disconnection of KM2 simultaneously, detent contactor KM3 coil losing electricity, two pairs of normally opened contacts of KM3 (KM3_1-2,3-4) disconnect, and rectifier Re alternating current input power supplying cuts off, and detent Ar is in the state of holding tightly; Lifting motor M1 outage, spray gun is out of service.
Under human-machine operation picture Automatic Control condition, under the PLC recipient machine operation picture after the spray gun order, PLC output decline (rising) " Q11.1 (Q11.0) " run signal makes decline contactor KM2 coil electricity, and the 1-3 of KM2 is to normally opened contact (KM2_1-2,3-4,5-6) closure; The 4th pair of normally opened contact of while KM2 (two pairs of normally opened contacts (KM3_1-2,3-4) closure of KM2_13-14 closure, detent contactor KM3 coil electricity, KM3, rectifier Re connects alternating current input power supplying, and detent Ar is in releasing orientation; Lifting motor M1 energising, spray gun descend and move.After spray gun reached automatic stop position, a pair of normally closed contact that stops limit switch SQ2 automatically that descends disconnected, decline contactor KM2 coil blackout, and the 1-3 of decline contactor KM2 disconnects normally opened contact (KM2_1-2,3-4,5-6); The 4th pair of normally opened contact (KM2_13-14) disconnection of KM2 simultaneously, detent contactor KM3 coil losing electricity, two pairs of normally opened contacts of KM3 (KM3_1-2,3-4) disconnect, and rectifier Re alternating current input power supplying cuts off, and detent Ar is in the state of holding tightly; Lifting motor M1 outage, spray gun is out of service.
The state that promptly stops is as follows:
Spray gun for preventing accident, is provided with on-the-spot scram button JZE at the scene on the control box in operational process.Press on-the-spot scram button JZE, the 3rd auxiliary reclay K3 coil blackout, its normally opened contact (K3_13-14) disconnects, contactor KM1 (KM2) coil blackout, the 1-3 of contactor KM1 (KM2) disconnects normally opened contact (1-2,3-4,5-6), lifting motor M1 outage; The 4th pair of normally opened contact (KM1_, KM2_13-14) of KM1 (KM2) disconnects simultaneously, the 1-2 of detent contactor KM3 coil losing electricity, contactor KM3 disconnects normally opened contact (KM3_1-2,3-4), rectifier Re alternating current input power supplying disconnects, and detent Ar is in the state of holding tightly; Spray gun is out of service.
Spray gun emergency protection control state during the PLC disorderly closedown is as follows:
If PLC disorderly closedown in the course of work, the control command Q11.0 when PLC normally moves, Q11.1 are with invalid, operating personnel's operational order is also with inoperative, the blanket gas of working equipments such as spray gun, oxygen rifle and chilled water will be closed or signal is undesired.If the processing of jetting in ladle of working equipments such as spray gun, oxygen rifle well imagines this moment be a kind of state of danger close.Will take emergency protection control to make spray gun rise to home this moment.In winding-up or stopped process, stop the state of limit switch SQ1 and spray gun emergency position limit switch ST1 automatically according to rising, can judge that this moment, spray gun was at home.According to self-defining status surveillance among the PLC " M10.1 (normal 1 signal) ", can judge PLC effectively and whether break down and shut down; " " normal " 1 " signal of the high level when moving for PLC, " Q10.0 " also is normal " 1 " signal of high level to M10.1 to output to PLC digital quantity output module by programming internal register to be set.If the PLC disorderly closedown, " M10.1 ", " Q10.0 " all be low level " 0 " signal.If judge PLC disorderly closedown and spray gun not at the safety stop position, then determining needs to promote spray gun to home, and at this moment, the PLC operation stops supervisory relay K5 dead electricity, the normally closed contact of K5 (K5_21-22) closure among Fig. 3.Thereby PLC disorderly closedown relay K 4; the normally opened contact of K4 (K4_13-14) closure; thereby contactless for hoisting KM1 coil gets; the 1-3 of contactless for hoisting KM1 is to normally opened contact (KM1_1-2,3-4,5-6) closure; detent contactor KM3 coil gets simultaneously; band-type brake B opens, lifting motor M1 energising, and spray gun rises and moves.When spray gun rose to home, the normally closed contact of spray gun emergency position limit switch ST1 disconnected, PLC disorderly closedown relay electric-loss, thereby contactless for hoisting KM1 coil losing electricity, KM3 coil losing electricity.Band-type brake is held tightly, the spray gun home that is in out of service.
In sum, in case this device PLC fault and shutting down, " Q10.0 " on its digital quantity output module must be output as " 0 ".PLC operation stopping supervisory relay K5 must not be electric on the module at this moment, and its normally closed contact must be closed.This moment, PLC fail-safe control relay K 4 must get electricly, and its normally opened contact closure makes spray gun contactless for hoisting KM1 coil electricity, and the 1-3 of contactor KM1 is to the normally opened contact closure; Two pairs of normally opened contact closures of the 4th pair of normally opened contact closure of while KM1, detent contactor KM3 coil electricity, KM3, band-type brake B opens, lifting motor M1 energising, spray gun rises and moves.When spray gun runs to the spray gun home, the normally closed contact of spray gun emergency position limit switch ST1 disconnects, and makes PLC disorderly closedown pilot relay K4 outage, spray gun contactless for hoisting KM1 dead electricity, and spray gun safety stops.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the purpose of this utility model, and be not with opposing qualification of the present utility model, as long as in essential scope of the present utility model, all will drop in the scope of claim of the present utility model variation, the modification of the above embodiment.
Claims (3)
1, automatic emergency lifting gear during a kind of PLC disorderly closedown comprises the control major loop and the PLC control loop thereof of the lifting of Electrified Transmission control device Control work equipment, wherein,
The structure of described control major loop is: the lifting motor M1 of lifting working equipment position, connect respectively a pair of in the 3rd pair of normally opened contact of 1-of contactless for hoisting KM1 of its three-phase input end, the a pair of back of connecting respectively again in the 3rd pair of normally opened contact of 1-of an electrothermal relay Q1 is connected with three-phase supply, wherein the 3rd pair of normally opened contact of the 1-of contactless for hoisting KM1 is corresponding with the 3rd pair of normally opened contact of 1-of decline contactor KM2 respectively in parallel, and the two pairs of normally opened contacts of two couples of contactless for hoisting KM1 therein and the common junction that two pairs of normally opened contacts of electrothermal relay Q1 are connected are connected the band brake apparatus of working equipment respectively by two pairs of normally opened contacts of detent contactor KM3;
The structure of described PLC control loop is made up of the two ends that operate as normal circuit and on-the-spot anxious power failure road are connected in parallel in the mains ac power supply, wherein, described operate as normal circuit is composed in series by mains supply switch Q2 and relay circuit, this relay circuit is become by following column circuit banks: rise and the decline contactor circuit, this circuit by the contactless for hoisting circuit be composed in series with an on-the-spot anxious a pair of normally opened contact that stops relay K 3 after the decline contactor circuit is in parallel, wherein, the contactless for hoisting circuit is by contactless for hoisting KM1, rising stops a pair of normally closed contact of limit switch SQ1 automatically and a pair of normally opened contact of one the 1st auxiliary reclay K1 is composed in series; The decline contactor circuit by decline contactor KM2, decline stops a pair of normally closed contact of limit switch SQ2 automatically and a pair of normally opened contact of one the 2nd auxiliary reclay K2 is composed in series; The detent relay circuit in parallel with rising and decline contactor circuit, this circuit is composed in series by the 3rd pair of normally opened contact of detent relay K M3 and contactless for hoisting KM1, the 3rd pair of normally opened contact of the 3rd couple of normally opened contact decline contactor also in parallel KM2 of this contactless for hoisting KM1; The 1st auxiliary reclay circuit in parallel with rising and decline contactor circuit, this circuit is composed in series by a pair of normally opened contact of the 1st auxiliary reclay K1 and the 6th auxiliary reclay K6; The 2nd auxiliary reclay circuit in parallel with rising and decline contactor circuit, this circuit is composed in series by a pair of normally opened contact of the 2nd auxiliary reclay K2 and the 7th auxiliary reclay K7; The digital output module " Q11.0 " that above-mentioned the 6th auxiliary reclay K6 and the 7th auxiliary reclay K7 are connected to PLC reaches " Q11.1 " end; The on-the-spot anxious relay K 3 of stopping of the anxious power failure route in described scene is composed in series with on-the-spot scram button, it is characterized in that:
A PLC disorderly closedown relay circuit in parallel with described rising and decline contactor circuit, this circuit is composed in series by PLC disorderly closedown relay K 4 and a pair of normally closed contact of spray gun emergency position limit switch ST1 and a pair of normally closed contact of PLC operation stopping supervisory relay K5, and described PLC operation stopping supervisory relay K5 is connected " Q10.0 " end of the digital output module of PLC;
The a pair of normally opened contact of the two ends of a pair of normally opened contact of the 1st auxiliary reclay K1 in described contactless for hoisting circuit PLC disorderly closedown in parallel relay K 4.
2, automatic emergency lifting gear during PLC disorderly closedown as claimed in claim 1 is characterized in that:
Described band brake apparatus is connected to form by rectifier and detent.
3, automatic emergency lifting gear during PLC disorderly closedown as claimed in claim 1 is characterized in that:
Described spray gun emergency position limit switch ST1 is installed in the lower end that described rising stops limit switch SQ1 automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920068749U CN201378274Y (en) | 2009-03-12 | 2009-03-12 | Automatic emergency lifting device when in PLC breakdown |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920068749U CN201378274Y (en) | 2009-03-12 | 2009-03-12 | Automatic emergency lifting device when in PLC breakdown |
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| CN201378274Y true CN201378274Y (en) | 2010-01-06 |
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| CN200920068749U Expired - Fee Related CN201378274Y (en) | 2009-03-12 | 2009-03-12 | Automatic emergency lifting device when in PLC breakdown |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337490A (en) * | 2010-07-27 | 2012-02-01 | 贵州红湖机械厂 | Scram protection loop of plasma spraying device |
| CN103217921A (en) * | 2013-05-03 | 2013-07-24 | 济钢集团有限公司 | Start-stop control device of relay-contact-type control electrical equipment |
| CN103336455A (en) * | 2013-06-30 | 2013-10-02 | 贵州华阳电工有限公司 | Hard logic control device |
| CN103840425A (en) * | 2014-02-28 | 2014-06-04 | 江苏永钢集团有限公司 | Internal contracting braking wire breaking and warning device of continuous casting withdrawing-straightening motor |
| CN104976900A (en) * | 2015-06-24 | 2015-10-14 | 吴倩颖 | Running controller of heating furnace |
| CN105506216A (en) * | 2015-12-17 | 2016-04-20 | 大连华冶联自动化有限公司 | Device and method for ensuring safe operation of oxygen lance direct current emergency oxygen lance lifting |
| CN105969973A (en) * | 2016-07-01 | 2016-09-28 | 江苏永钢集团有限公司 | Hydraulic steel pushing scramming device for heating furnace |
| CN108569625A (en) * | 2018-04-26 | 2018-09-25 | 泰富国际工程有限公司 | A kind of safety protection circuit device of erecting equipment brake |
| CN109507867A (en) * | 2018-12-29 | 2019-03-22 | 湖北航天技术研究院总体设计所 | A kind of safety control system of equipment |
| CN110161955A (en) * | 2019-05-31 | 2019-08-23 | 广东电网有限责任公司 | A kind of transformer Cooling case PLC failure emergency processing method and normally opened relay |
| CN111622566A (en) * | 2020-05-26 | 2020-09-04 | 宁波车佳轩停车设备有限公司 | Single-track double-layer avoidance-free parking equipment control system |
| CN114371661A (en) * | 2021-12-02 | 2022-04-19 | 太原重工股份有限公司 | Emergency operation control system of dry quenching hoister |
| CN115857310A (en) * | 2023-03-03 | 2023-03-28 | 三一氢能有限公司 | Control system and control method of electrolysis equipment and electrolysis equipment |
| CN119171071A (en) * | 2024-09-24 | 2024-12-20 | 中国船舶集团有限公司第七二三研究所 | A control protection circuit for a two-axis turntable with lodging |
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| CN102337490A (en) * | 2010-07-27 | 2012-02-01 | 贵州红湖机械厂 | Scram protection loop of plasma spraying device |
| CN103217921A (en) * | 2013-05-03 | 2013-07-24 | 济钢集团有限公司 | Start-stop control device of relay-contact-type control electrical equipment |
| CN103336455A (en) * | 2013-06-30 | 2013-10-02 | 贵州华阳电工有限公司 | Hard logic control device |
| CN103840425B (en) * | 2014-02-28 | 2017-05-17 | 江苏永钢集团有限公司 | Internal contracting braking wire breaking and warning device of continuous casting withdrawing-straightening motor |
| CN103840425A (en) * | 2014-02-28 | 2014-06-04 | 江苏永钢集团有限公司 | Internal contracting braking wire breaking and warning device of continuous casting withdrawing-straightening motor |
| CN104976900A (en) * | 2015-06-24 | 2015-10-14 | 吴倩颖 | Running controller of heating furnace |
| CN105506216B (en) * | 2015-12-17 | 2017-08-25 | 大连华冶联自动化有限公司 | It is a kind of to ensure the device and method that oxygen rifle direct current accident proposes rifle safe operation |
| CN105506216A (en) * | 2015-12-17 | 2016-04-20 | 大连华冶联自动化有限公司 | Device and method for ensuring safe operation of oxygen lance direct current emergency oxygen lance lifting |
| CN105969973A (en) * | 2016-07-01 | 2016-09-28 | 江苏永钢集团有限公司 | Hydraulic steel pushing scramming device for heating furnace |
| CN108569625A (en) * | 2018-04-26 | 2018-09-25 | 泰富国际工程有限公司 | A kind of safety protection circuit device of erecting equipment brake |
| CN109507867A (en) * | 2018-12-29 | 2019-03-22 | 湖北航天技术研究院总体设计所 | A kind of safety control system of equipment |
| CN110161955A (en) * | 2019-05-31 | 2019-08-23 | 广东电网有限责任公司 | A kind of transformer Cooling case PLC failure emergency processing method and normally opened relay |
| CN110161955B (en) * | 2019-05-31 | 2024-02-02 | 广东电网有限责任公司 | A transformer cooling box PLC fault emergency treatment method and normally open relay |
| CN111622566A (en) * | 2020-05-26 | 2020-09-04 | 宁波车佳轩停车设备有限公司 | Single-track double-layer avoidance-free parking equipment control system |
| CN114371661A (en) * | 2021-12-02 | 2022-04-19 | 太原重工股份有限公司 | Emergency operation control system of dry quenching hoister |
| CN114371661B (en) * | 2021-12-02 | 2023-07-21 | 太原重工股份有限公司 | Emergency operation control system of coke dry quenching hoister |
| CN115857310A (en) * | 2023-03-03 | 2023-03-28 | 三一氢能有限公司 | Control system and control method of electrolysis equipment and electrolysis equipment |
| CN119171071A (en) * | 2024-09-24 | 2024-12-20 | 中国船舶集团有限公司第七二三研究所 | A control protection circuit for a two-axis turntable with lodging |
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