CN103341499A - Device for tracing and detecting interior plate blank head position of fixed width machine - Google Patents
Device for tracing and detecting interior plate blank head position of fixed width machine Download PDFInfo
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- CN103341499A CN103341499A CN2013102346283A CN201310234628A CN103341499A CN 103341499 A CN103341499 A CN 103341499A CN 2013102346283 A CN2013102346283 A CN 2013102346283A CN 201310234628 A CN201310234628 A CN 201310234628A CN 103341499 A CN103341499 A CN 103341499A
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Abstract
The invention provides a device for tracing and detecting an interior plate blank head position of a fixed width machine. The device for tracing and detecting the interior the plate blank head position of the fixed width machine comprises a fixed width machine control PLC and a fixed width machine first-level control system connected with the fixed width machine control PLC; the input end of the fixed width machine control PLC is connected with a main transmission motor current signal, a pressing die size, and an inlet pinch roller pressure signal. The fixed width machine control PLC comprises a filtering module, a counting module, a plate blank head position calculating module and a communication module; filter shaping is conducted on the main transmission motor signal by the filtering module; the number of impulses of the main transmission motor current signal is accumulated by the counting module; the plate blank head position is calculated by the plate blank head position counting module, and the calculation formula is a plate blank head position value=28.96m+the number of the impulses of the main transmission motor current signal*the pressing die size; the plate blank head position value is transmitted to the fixed width machine first-level control system in real time by the communication module; the filtering module judges monitored currents, and the impulses are effective when the currents are larger than or equal to 4000A every time.
Description
Technical field
The present invention relates to the inner slab head position of a kind of constant width machine and follow the tracks of the device that detects, belong to electric basic automatization control field, directly apply to hot rolling constant width machine forcing press (hereinafter to be referred as constant width machine) control.
Background technology
Constant width machine is positioned at after the roughing descaling mill on the hot rolling line, before other milling train, is used for the slab total length is carried out continuous width side pressure.Therefore, slab must be accurately at the tracing positional of constant width machine.If it is inaccurate that the slab head position is followed the tracks of, can influence the constant width machine side pressure and depress roll gap control, guide roller and the control of pinch roll roll gap.Directly cause exporting the width of plate slab control accuracy and descend, also can occur pinch roll and guide roller device damage when serious.
Addressed this problem two kinds of schemes: 1, on existing systems, detect and calculate the slab head position by other a kind of method and follow the tracks of, it is less that this method is influenced by the external equipment situation.Directly wear and tear as the entrance pinch roll roller, slab skids etc. and all can cause error.2, increase the checkout gear that follow the tracks of the slab position.As laser velocimeter, directly measure real-time speed and the position of slab.This scheme can more perfectly be dealt with problems, but, need to increase external equipment, and be subjected to the site environment restriction more, selection as the installation site, big or small weight maintenance repair maintenance of checkout gear etc., and to carry out bigger transformation to existing electromechanical equipment, so this method can't realize in a short time.
In constant width machine control, wherein the tracking of the head position of slab must be accurate, otherwise occur the width of plate slab abnormal failure easily, badly damaged equipment.In the former design, the computational methods of slab head position are in the constant width machine: when the slab head is nipped the constant width machine entrance pinch roll, the encoder of pinch roll motor can detect the speed of pinch roll in real time, at this moment its speed is carried out integral operation, can obtain the positional value of slab head tracking.Usually, the slab head position value of this method calculating is very accurate.But when the footpath inordinate wear of pinch roll roller occurring, perhaps slab plate shape is bad, and when occurring skidding, the slab head position value that this method calculates causes producing unusual much larger than the physical location of slab head.
Summary of the invention
The objective of the invention is in order to address the above problem, provide the inner slab head position of a kind of wide machine to follow the tracks of the device that detects, adopt brand-new detection computations method, overcome the limitation of former method, the detection to the pulse change of constant width machine main driving motor electric current is passed through in realization, draw effective beating number of times, pat number of times and multiply by beating step distance afterwards, can calculate the tracing positional of slab head in the constant width machine.
Technical scheme of the present invention: the inner slab head position of constant width machine of the present invention is followed the tracks of the device that detects and is comprised constant width machine control PLC, with the constant width machine first class control system that constant width machine control PLC is connected, the input of constant width machine control PLC connects main driving motor current signal, pressing mold size, entrance pinch roll pressure signal; Constant width machine control PLC comprises filtration module, counting module, slab head position computing module, communication module; Filtration module: to main driving motor current signal filter shape; Counting module: the pulse number of accumulative total main driving motor current signal; Slab head position computing module: calculate the slab head position, computing formula is: slab head position value=28.96 meters+main driving motor current impulse number * pressing mold size; Communication module is sent to the constant width machine first class control system in real time with slab head position value.
Described filtration module is judged the electric current of monitoring, is that pulse is effective more than or equal to 4000A at every turn.
Advantage of the present invention:
1) entrance pinch roll roller footpath inordinate wear: the very big error of calculation appears in former method, and it is inaccurate to cause the slab head position to be followed the tracks of, and it is excessive that the slab head subtracts wide amount; The present invention also error can occur, but little, the slab head is subtracted wide influential in allowed band.
2) when the incoming slab template was bad, the fault of sealing up a door appearred in former method easily, and slab breaks equipment, must manually return steel; Slab of the present invention rolling time in constant width machine increases, but can ordinary production.
3) incoming slab subtracts wide amount when big, and skidding appears in former method easily, causes the slab head position to be followed the tracks of calculating error occurring, and the width of plate slab control accuracy descends; The present invention is skidded influence not quite, still can use.
In a word, new method contrast aging method has solved the head position error of calculation that slab skids and brings.And this method realizes easily, does not need used device transformation, utilizes existing electromechanical equipment, increases control algolithm and just can realize.
After coming into operation, the fault statistics of constant width machine and width accuracy: not only obviously descend fault time, and the width control accuracy has also improved.
Description of drawings
Fig. 1 is constant width machine side pressure pressing mold and slab motion (overlooking) schematic diagram.
Fig. 2 is constant width machine device location value (side-looking) schematic diagram.
Fig. 3 is hardware principle block diagram of the present invention.
Fig. 4 is software principle block diagram of the present invention.
Fig. 5 is slab rolling flow chart in constant width machine.
The specific embodiment
Fig. 1 is constant width machine side pressure pressing mold and slab motion (overlooking) schematic diagram.
Among the figure: the side pressure pressing mold 2 of constant width machine, slab 1.
The step 1) slab enters the constant width machine original position;
Step 2) the slab pressing mold size 400mm that moves ahead stops;
The step 3) main driving motor rotates to 360 degree or 0 degree by 180 degree, and pressing mold 2 is patted a slab 1;
(main driving motor rotated to 180 degree by 360 degree (0 degree) again, and pressing mold is regained after step 4) was patted and finished.
Enter next cycle beating, middle rectangle is represented incoming slab 1, and its arrow represents that the slab stepping moves ahead; The trapezoidal expression pressing mold 2 in both sides, its arrow are represented its beating direction, move back and forth; The mechanical device of ellipse representation main driving motor driving rotatablely moves up and down.
Side pressure pressing mold 2 effective wide 400mm of constant width machine, slab 1 400mm that moves ahead stops, and main driving motor rotates to 360 degree or 0 degree by 180 degree then, and pressing mold is patted once, pat finish after, main driving motor rotates to 180 degree, pressing mold withdrawal by 360 degree (0 degree) again.Enter next cycle beating.
Fig. 3 is hardware principle block diagram of the present invention, Fig. 4 is software principle block diagram of the present invention: the inner slab head position of constant width machine of the present invention is followed the tracks of the device that detects and is comprised constant width machine control PLC, with the constant width machine first class control system that constant width machine control PLC is connected, the input of constant width machine control PLC connects main driving motor current signal, pressing mold size, entrance pinch roll pressure signal; Constant width machine control PLC comprises filtration module, counting module, slab head position computing module, communication module; Filtration module: to main driving motor current signal filter shape; Counting module: the pulse number of accumulative total main driving motor current signal; Slab head position computing module: calculate the slab head position, computing formula is: slab head position value=28.96 meters+main driving motor current impulse number * pressing mold size; Communication module is sent to the constant width machine first class control system in real time with slab head position value.
Fig. 2 is constant width machine device location value (side-looking) schematic diagram.
Slab enters constant width machine and arrives and to subtract wide side pressure pressing mold place, because pressing mold size 400mm, slab moves ahead after the 400mm, stops.The side pressure pressing mold is once patted, after side pressure side pressure mould is regained.Slab continues the 400mm that moves ahead, and enters next sampling action.
Fig. 2 provides the positional value of the several visual plants of constant width machine.The distance of representing this equipment and roughing rolling line entrance respectively.27.01 meters of constant width machine entrance pinch roll 3 positions, 28.96 meters of 30.91 meters of outlet pinch roll 4 positions and constant width machine side pressure pressing mold 2 positions.The slab head arrives before the side pressure pressing mold, slab is only done forward movement, does not begin to carry out side pressure and subtracts widely, has only when the slab head arrives 28.96 meters of side pressure pressing molds, namely begun to subtract wide motion by the side compression type that main driving motor drives, left constant width machine fully up to slab.Therefore computing formula is as follows:
Slab head position value=28.96 meters+stepping is patted number of times * 0.4 meter;
Fig. 5 is slab rolling flow chart in constant width machine:
The present invention determines that by the entrance pinch roll pressure signal slab arrives initial position not, can monitor the size of current of constant width machine main driving motor in real time by current transformer, when each pressing mold is patted, the electric current of monitoring just has a pulsed saltus step, at every turn more than or equal to 4000A(empirical statistics value) namely record pulsatile once, constant width machine control PLC adds up the current impulse of monitoring, and the distance that simultaneously number of times of this impulse hits is multiplied by each slab stepping can obtain the slab head value of moving ahead in real time.When the electric current of monitoring can be thought position that this side pressure pressing mold pats with to pat the position last time identical less than 4000A, i.e. the slab stagnation that occurs skidding does not normally move ahead.
Table 1: stepping number of times and slab head position corresponding relation
Incoming slab enters the constant width machine entrance pinch roll, arrives the side pressure pressing mold under it drives, and the beginning stepping subtracts wide motion.Slab advances and stops after the 400mm, and the side pressure pressing mold is patted once, the pressing mold withdrawal, and it is wide that this process can be finished subtracting of whole slab repeatedly.When slab and entrance pinch roll skidded, actual slab position did not change, but entrance pinch roll is still in rotation.
Therefore, in the former method, computing formula:
, n entrance pinch roll motor actual speed; R entrance pinch roll radius; T is the time that entrance pinch roll is stung steel.
Former method relies on entrance pinch roll speed to carry out slab head position value that integral operation obtains will be than the about 400mm of the actual head position value of slab, if continue to occur skidding, this error will continue to become greatly so, up to causing the constant width machine fault.
Computing formula of the present invention: slab head position value=28.96 meters+main transmission current impulse number of times * 0.4 meter.
Among the present invention, if slab and entrance pinch roll skid, the position of this side pressure pressing mold beating will overlap with the position that last time, pressing mold was patted so, because last time, beating was clapped slab narrow, when this is patted, do not have very big load, the main driving motor electric current that drives the beating of side pressure pressing mold will not have impulse hits, therefore can be by counting main driving motor current impulse number, calculate slab head position value, the slab head position value that obtains so can not be subjected to the influence that slab skids and brings, and has guaranteed the accuracy of slab head position value.
Core of the present invention is the head position pursuit gain that changes to calculate slab by the electric current of constant width machine main driving motor, reduction is to the dependence of constant width machine entrance pinch roll, when entrance pinch roll and slab occur skidding or its roller occurs and directly wear and tear, do not influence detection and calculating that the slab head position is followed the tracks of.Therefore, every electric current by the constant width machine main driving motor changes to calculate the head position pursuit gain of slab, all belongs to protection scope of the present invention.
Claims (2)
1. the inner slab head position of constant width machine is followed the tracks of the device that detects, comprise constant width machine control PLC, constant width machine first class control system with constant width machine control PLC is connected is characterized in that: the input of constant width machine control PLC connects main driving motor current signal, pressing mold size, entrance pinch roll pressure signal; Constant width machine control PLC comprises filtration module, counting module, slab head position computing module, communication module; Filtration module: to main driving motor current signal filter shape; Counting module: the pulse number of accumulative total main driving motor current signal; Slab head position computing module: calculate the slab head position, computing formula is: slab head position value=28.96 meters+main driving motor current impulse number * pressing mold size; Communication module is sent to the constant width machine first class control system in real time with slab head position value.
2. the inner slab head position of constant width machine according to claim 1 is followed the tracks of the device that detects, and it is characterized in that: filtration module is judged the electric current of monitoring, is that pulse is effective more than or equal to 4000A at every turn.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001729A (en) * | 2014-04-02 | 2014-08-27 | 首钢京唐钢铁联合有限责任公司 | Device and method for establishing slab tracking of pinch roll of sizing press |
| CN104772344A (en) * | 2014-01-10 | 2015-07-15 | 宝山钢铁股份有限公司 | Hot rolling synchronization type sizing press tracking method |
| CN107020309A (en) * | 2016-01-29 | 2017-08-08 | 宝山钢铁股份有限公司 | A kind of means for correcting of coiler pinch-roll tracking accuracy and bearing calibration |
| CN107020300A (en) * | 2016-01-29 | 2017-08-08 | 宝山钢铁股份有限公司 | A kind of complex correction device and complex correction method for improving coiling machine tracking accuracy |
| CN107608400A (en) * | 2017-08-30 | 2018-01-19 | 滁州市西控电子有限公司 | A kind of mine saves drainage control system |
| CN108817098A (en) * | 2018-04-26 | 2018-11-16 | 首钢京唐钢铁联合有限责任公司 | A kind of hot rolling technology control method and device |
| CN110508626A (en) * | 2019-07-23 | 2019-11-29 | 北京首钢股份有限公司 | A kind of side compression machine slab method of controlling extrusion |
| CN111618096A (en) * | 2020-04-29 | 2020-09-04 | 河钢乐亭钢铁有限公司 | Method for calculating tracking control of head of hot rolling coiler |
| CN111872135A (en) * | 2020-08-05 | 2020-11-03 | 攀钢集团西昌钢钒有限公司 | Fixed width press and rolling control method thereof |
| CN113877968A (en) * | 2020-07-01 | 2022-01-04 | 宝山钢铁股份有限公司 | Method for preventing width fixing machine from slipping |
| CN115446126A (en) * | 2022-08-31 | 2022-12-09 | 鞍钢股份有限公司 | Steel biting and throwing method of hot rolling fixed-width press |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000042886A (en) * | 1998-12-28 | 2000-07-15 | 이구택 | Control method at generation of abnormality in sensor for controlling cold rolling process |
| JP2004135477A (en) * | 2002-10-15 | 2004-04-30 | Jfe Steel Kk | Synchronous motor operating and controlling method |
| JP2005118841A (en) * | 2003-10-17 | 2005-05-12 | Nippon Steel Corp | Plate shape control method and plate rolling mill |
| CN101722196A (en) * | 2009-11-10 | 2010-06-09 | 武汉钢铁(集团)公司 | Method for calculating and locating strip steel head of automatic stepping system of hot continuous rolling coiling machine |
| CN101920270A (en) * | 2009-06-12 | 2010-12-22 | 宝山钢铁股份有限公司 | Device and method for detecting and controlling tilting buckle head of band steel in rough rolling process |
| JP2013111615A (en) * | 2011-11-29 | 2013-06-10 | Jfe Steel Corp | Method of conveying rolled stock and rolling apparatus |
-
2013
- 2013-06-14 CN CN201310234628.3A patent/CN103341499B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000042886A (en) * | 1998-12-28 | 2000-07-15 | 이구택 | Control method at generation of abnormality in sensor for controlling cold rolling process |
| JP2004135477A (en) * | 2002-10-15 | 2004-04-30 | Jfe Steel Kk | Synchronous motor operating and controlling method |
| JP2005118841A (en) * | 2003-10-17 | 2005-05-12 | Nippon Steel Corp | Plate shape control method and plate rolling mill |
| CN101920270A (en) * | 2009-06-12 | 2010-12-22 | 宝山钢铁股份有限公司 | Device and method for detecting and controlling tilting buckle head of band steel in rough rolling process |
| CN101722196A (en) * | 2009-11-10 | 2010-06-09 | 武汉钢铁(集团)公司 | Method for calculating and locating strip steel head of automatic stepping system of hot continuous rolling coiling machine |
| JP2013111615A (en) * | 2011-11-29 | 2013-06-10 | Jfe Steel Corp | Method of conveying rolled stock and rolling apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 王建功: "首钢京唐热轧1580定宽机控制技术研究", 《科技风》, no. 5, 15 March 2013 (2013-03-15), pages 18 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772344A (en) * | 2014-01-10 | 2015-07-15 | 宝山钢铁股份有限公司 | Hot rolling synchronization type sizing press tracking method |
| CN104001729A (en) * | 2014-04-02 | 2014-08-27 | 首钢京唐钢铁联合有限责任公司 | Device and method for establishing slab tracking of pinch roll of sizing press |
| CN104001729B (en) * | 2014-04-02 | 2016-05-25 | 首钢京唐钢铁联合有限责任公司 | A kind of apparatus for establishing and method of constant width machine pinch roll slab tracking |
| CN107020300B (en) * | 2016-01-29 | 2019-03-29 | 宝山钢铁股份有限公司 | A kind of complex correction device and complex correction method improving coiling machine tracking accuracy |
| CN107020300A (en) * | 2016-01-29 | 2017-08-08 | 宝山钢铁股份有限公司 | A kind of complex correction device and complex correction method for improving coiling machine tracking accuracy |
| CN107020309B (en) * | 2016-01-29 | 2019-03-29 | 宝山钢铁股份有限公司 | A kind of means for correcting of coiler pinch-roll tracking accuracy and bearing calibration |
| CN107020309A (en) * | 2016-01-29 | 2017-08-08 | 宝山钢铁股份有限公司 | A kind of means for correcting of coiler pinch-roll tracking accuracy and bearing calibration |
| CN107608400A (en) * | 2017-08-30 | 2018-01-19 | 滁州市西控电子有限公司 | A kind of mine saves drainage control system |
| CN108817098A (en) * | 2018-04-26 | 2018-11-16 | 首钢京唐钢铁联合有限责任公司 | A kind of hot rolling technology control method and device |
| CN110508626A (en) * | 2019-07-23 | 2019-11-29 | 北京首钢股份有限公司 | A kind of side compression machine slab method of controlling extrusion |
| CN111618096A (en) * | 2020-04-29 | 2020-09-04 | 河钢乐亭钢铁有限公司 | Method for calculating tracking control of head of hot rolling coiler |
| CN113877968A (en) * | 2020-07-01 | 2022-01-04 | 宝山钢铁股份有限公司 | Method for preventing width fixing machine from slipping |
| CN113877968B (en) * | 2020-07-01 | 2023-12-12 | 宝山钢铁股份有限公司 | Method for preventing slipping of width-fixing machine |
| CN111872135A (en) * | 2020-08-05 | 2020-11-03 | 攀钢集团西昌钢钒有限公司 | Fixed width press and rolling control method thereof |
| CN115446126A (en) * | 2022-08-31 | 2022-12-09 | 鞍钢股份有限公司 | Steel biting and throwing method of hot rolling fixed-width press |
| CN115446126B (en) * | 2022-08-31 | 2024-02-13 | 鞍钢股份有限公司 | Steel biting and throwing method for hot rolling fixed-width press |
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