CN104190724B - A kind of measurement mechanism of down-pressing system of rolling mill mechanical electronic hydraulic coupling vertical vibration - Google Patents
A kind of measurement mechanism of down-pressing system of rolling mill mechanical electronic hydraulic coupling vertical vibration Download PDFInfo
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- CN104190724B CN104190724B CN201410472927.5A CN201410472927A CN104190724B CN 104190724 B CN104190724 B CN 104190724B CN 201410472927 A CN201410472927 A CN 201410472927A CN 104190724 B CN104190724 B CN 104190724B
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- 230000008878 coupling Effects 0.000 title claims abstract description 26
- 238000010168 coupling process Methods 0.000 title claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 26
- 238000005096 rolling process Methods 0.000 title claims abstract description 23
- 238000003825 pressing Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- 238000005259 measurement Methods 0.000 title claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 22
- 238000003801 milling Methods 0.000 claims abstract description 15
- 230000009467 reduction Effects 0.000 claims description 17
- 238000009530 blood pressure measurement Methods 0.000 claims description 16
- 230000001133 acceleration Effects 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 claims description 3
- 238000010183 spectrum analysis Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000011328 necessary treatment Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 208000033999 Device damage Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
A kind of measurement mechanism of down-pressing system of rolling mill mechanical electronic hydraulic coupling vertical vibration, belong to rolling mill fault detection technique field, it is characterized in that a kind of mechanical electronic hydraulic coupling vertical vibration real-time test problems that is intended to solve, simultaneously from machinery, electric, hydraulic pressure three aspect collection signal, and by signal processing analysis, milling train mechanical electronic hydraulic coupling vertical vibration is carried out to the measurement mechanism of on-line checkingi and warning, when there is mechanical electronic hydraulic coupling vertical vibration in milling train, this device energy and alarm, remind operating personnel to take necessary treatment measures, ensure milling train safe operation.To enterprise, there is high economic benefit and using value.
Description
Technical field
The measurement mechanism of a kind of down-pressing system of rolling mill mechanical electronic hydraulic coupling of the present invention vertical vibration, belong to rolling mill fault detection technique field, this device, by analyzing the real-time online Acquire and process of down-pressing system of rolling mill mechanical signal, electric signal, hydraulic pressure signal, can realize the on-line checkingi to down-pressing system of rolling mill mechanical electronic hydraulic coupled vibrations fault and early warning.
Background technology
Milling train makes rolled piece pass through to have the roll of certain roll gap thus roll out a kind of metal working equipment of expection thickness band, is one of visual plant of steel rolling.Down-pressing system of rolling mill collection machinery, electronics, multiple subsystem such as hydraulic pressure is in one, under perturbation action, very easily produce mechanical electronic hydraulic coupling vertical vibration, research shows to cause belt steel surface to occur the striped that light and shade replaces when occurrence frequency is the Fifth Octave vertical vibration of 500 ~ 700Hz, affect product quality, also can generate obvious oscillation mark at roller surface, accelerate the roller surface rate of wear, when occurrence frequency is the third octave vertical vibration of 150 ~ 250Hz, strip thickness error can be made to increase, also waste product may be caused time serious, broken belt is device damage even, if rolling mill vibration phenomenon can not find early and take measures, harmful effect can be produced to the economic benefit of enterprise.
For milling train vertical vibration phenomenon, Chinese scholars has done large quantifier elimination with regard to vibration mechanism, vibration suppression etc., but the on-line checkingi of vertical vibration fault is confined to more to the detection of a single state.Such as, the vertical vibration parameter by detecting each mechanical link of milling train is had to carry out Fault Identification, also the electric parameter by detecting milling train work is had to carry out Fault Identification, but also not have at present simultaneously from machinery, electrically, hydraulic pressure three aspect parameter carries out the special purpose device that detects simultaneously, the mechanical electronic hydraulic vertical vibration fault that is coupled is detected in real time and reported to the police and has important construction value.
Summary of the invention
The measurement mechanism of a kind of down-pressing system of rolling mill mechanical electronic hydraulic coupling of the present invention vertical vibration, be intended to the real-time test problems solving mechanical electronic hydraulic coupling vertical vibration, open a kind of simultaneously from machinery, electric, hydraulic pressure three aspect collection signal, and by signal processing analysis, milling train mechanical electronic hydraulic coupling vertical vibration is carried out to the technical scheme of on-line checkingi identification and warning.
The measurement mechanism of a kind of down-pressing system of rolling mill mechanical electronic hydraulic coupling of the present invention vertical vibration, it is characterized in that a kind of mechanical electronic hydraulic coupling vertical vibration real-time test problems that is intended to solve, simultaneously from machinery, electrically, hydraulic pressure three aspect collection signal, and by signal processing analysis, milling train mechanical electronic hydraulic coupling vertical vibration is carried out to the device of on-line checkingi identification and warning, this device is made up of hydraulic pressing down system in rolling mill and Signal acquiring and processing part, hydraulic pressing down system in rolling mill described in it comprises rolling-mill housing 1, lower support roll 2, bottom working roll 3, top working roll 4, top backing up roll 5, hydraulic cylinder for reduction system 6, electrohydraulic servo system 13 and servo amplifier 17, the shell of position sensor 9 is fixed on the top of rolling-mill housing 1, the moving part of position sensor 9 moves together with piston in hydraulic cylinder for reduction system 6, indirectly measured the variable quantity of roll gap relative to the change in location of cylinder body by detection hydraulic cylinder for reduction system 6 piston, frame Vertical Acceleration sensor 7 is equipped with at rolling-mill housing 1 top, for measuring the vibration signal of rolling-mill housing 1, the cover top portion of position sensor 9 is equipped with position sensor shell Vertical Acceleration sensor 8, for the vibration signal of measuring position sensor 9, the mechanical signal collecting unit 18 of the position sensor case vibration signal input DSP signal acquisition and processing apparatus 21 that the frame vibration signal gathered by frame Vertical Acceleration sensor 7 and position sensor shell Vertical Acceleration sensor 8 gather, at the output of servo amplifier 17, Hall current sensor 16 is housed, for measuring the current signal that servo amplifier 17 exports, the electrical signal collection unit 19 of DSP signal acquisition and processing apparatus 21 is inputted together with the current signal that the hydraulic cylinder for reduction system piston displacement signal measured by position sensor 9 converts 4 ~ 20mA to the signal of telecommunication by position transmitter 12 and Hall current sensor 16 detect, hydraulic cylinder rodless cavity pressure measurement sensor 11 is housed for measuring the pressure signal of hydraulic cylinder rodless cavity at the rodless cavity of hydraulic cylinder for reduction system 6, and the hydraulic pressure signal collecting unit 20 of DSP signal acquisition and processing apparatus 21 is input to by hydraulic cylinder rodless cavity pressure measurement transmitter 15, hydraulic cylinder rod chamber pressure measurement sensor 10 is housed for measuring the back pressure signal of hydraulic cylinder rod chamber at the rod chamber of hydraulic cylinder for reduction system 6, and the hydraulic pressure signal collecting unit 20 of DSP signal acquisition and processing apparatus 21 is input to by hydraulic cylinder rod chamber pressure measurement transmitter 14, the mechanical signal that DSP signal acquisition and processing apparatus 21 pairs of mechanical signal collecting units 18 gather, the electric signal that electrical signal collection unit 19 gathers and the hydraulic pressure signal that hydraulic pressure signal collecting unit 20 gathers carry out signal transacting and spectrum analysis, work as mechanical signal, electric signal, the frequency spectrum of hydraulic pressure signal close to and amplitude transfinites time, illustrate that mechanical electronic hydraulic coupling vertical vibration may occur milling train, DSP signal acquisition and processing apparatus 21 sends alarm signal, alert processes.
The measurement mechanism of a kind of down-pressing system of rolling mill mechanical electronic hydraulic coupling of the present invention vertical vibration, its advantage is:
1, the invention solves the problem that the on-line checkingi of vibration fault in prior art is confined to a single state detection more.
2, the present invention is simultaneously from machinery, electrically, hydraulic pressure three aspect collection signal, and by signal processing analysis, on-line checkingi identification and warning are carried out to milling train mechanical electronic hydraulic coupling vertical vibration, find early belt steel surface can be caused to occur the striped that light and shade replaces when solving mechanical electronic hydraulic coupling occurrence frequency is the Fifth Octave vertical vibration of 500 ~ 700Hz, affect product quality, also can generate obvious oscillation mark at roller surface, accelerate the roller surface rate of wear and when occurrence frequency is the third octave vertical vibration of 150 ~ 250Hz, strip thickness error can be made to increase, also waste product may be caused time serious, the broken belt even problem of device damage, the mechanical electronic hydraulic coupling vertical vibration produced when can work to hydraulic pressing down system in rolling mill carries out on-line checkingi and Realtime Alerts, ensure the safe operation of milling train.To enterprise, there is important construction value and economic benefit.
Accompanying drawing explanation
The measurement mechanism schematic diagram of Fig. 1 down-pressing system of rolling mill mechanical electronic hydraulic coupling vertical vibration
1. rolling-mill housing 2. lower support roll 3. bottom working roll 4. top working roll 5. top backing up roll 6. hydraulic cylinder for reduction system
7. frame Vertical Acceleration sensor 8. position sensor shell Vertical Acceleration sensor 9. position sensor 10. hydraulic cylinder rod chamber pressure measurement sensor 11. hydraulic cylinder rodless cavity pressure measurement sensor
12. position transmitter 13. electrohydraulic servo system 14. hydraulic cylinder rod chamber pressure measurement transmitter 15. hydraulic cylinder rodless cavity pressure measurement transmitter 16. Hall current sensor 17. servo amplifier 18. mechanical signal collecting unit 19. electrical signal collection unit 20. hydraulic pressure signal collecting unit 21.DSP signal acquisition and processing apparatus.
Specific embodiments
embodiment 1:
Measurement mechanism below in conjunction with a kind of down-pressing system of rolling mill mechanical electronic hydraulic coupling of accompanying drawing 1 couple of the present invention vertical vibration is described further.
According to accompanying drawing 1, the shell of position sensor 9 is fixed on the top of rolling-mill housing 1, position sensor 9 moves and the current signal that the displacement signal of the piston detected converts 4 ~ 20mA to by position transmitter 12 is sent to electrical signal collection unit 19 together with piston in hydraulic cylinder for reduction system 6, position sensor shell Vertical Acceleration sensor 8 is arranged on the cover top portion of position sensor 9, for the vibration signal of the position sensor recorded 9 shell is sent to mechanical signal collecting unit 18, frame Vertical Acceleration sensor 7 is arranged on the top of rolling-mill housing 1, for the vibration signal of the rolling-mill housing recorded 1 is sent to mechanical signal collecting unit 18, at the output of servo amplifier 17, Hall current sensor 16 is installed, the current signal that the servo amplifier 17 recorded exports is sent to electrical signal collection unit 19, at the rodless cavity of hydraulic cylinder for reduction system 6, hydraulic cylinder rodless cavity pressure measurement sensor 11 is installed, for measuring the pressure signal of the rodless cavity of hydraulic cylinder for reduction system 6, and be sent to hydraulic pressure signal collecting unit 20 after converting pressure signal to the signal of telecommunication by hydraulic cylinder rodless cavity pressure measurement transmitter 15, at the rod chamber of hydraulic cylinder for reduction system 6, hydraulic cylinder rod chamber pressure measurement sensor 10 is installed, for measuring the pressure signal of the rod chamber of hydraulic cylinder for reduction system 6, and be sent to hydraulic pressure signal collecting unit 20 after converting pressure signal to the signal of telecommunication by hydraulic cylinder rod chamber pressure measurement transmitter 14, DSP signal acquisition and processing apparatus 21 is to the mechanical signal gathered by mechanical signal collecting unit 18, the electric signal that electrical signal collection unit 19 gathers and the hydraulic pressure signal that hydraulic pressure signal collecting unit 20 gathers carry out data processing and spectrum analysis, work as mechanical signal, electric signal, the frequency spectrum of hydraulic pressure signal close to and amplitude transfinites time, illustrate that mechanical electronic hydraulic coupling vertical vibration may occur milling train, DSP signal acquisition and processing apparatus 21 sends alarm signal, alert carries out troubleshooting.
Claims (1)
1. the measurement mechanism of a down-pressing system of rolling mill mechanical electronic hydraulic coupling vertical vibration, this device is made up of hydraulic pressing down system in rolling mill and Signal acquiring and processing part, described hydraulic pressing down system in rolling mill comprises rolling-mill housing (1), lower support roll (2), bottom working roll (3), top working roll (4), top backing up roll (5), hydraulic cylinder for reduction system (6), electrohydraulic servo system (13) and servo amplifier (17), down-pressing system of rolling mill mechanical electronic hydraulic coupling vertical vibration measurement mechanism of the present invention is a kind of simultaneously from machinery, electrically, hydraulic pressure three aspect collection signal, and by data processing and analysis, the measurement mechanism of on-line checkingi and warning is carried out to milling train mechanical electronic hydraulic coupling vertical vibration, it is characterized in that the shell by position sensor (9) is fixed on the top of rolling-mill housing (1), the moving part of position sensor (9) moves together with the piston in hydraulic cylinder for reduction system (6), frame Vertical Acceleration sensor (7) is equipped with at rolling-mill housing (1) top, measure the vibration signal of rolling-mill housing (1), the cover top portion of position sensor (9) is equipped with position sensor shell Vertical Acceleration sensor (8), the vertical vibration signal of measuring position sensor (9), the shell vertical vibration signal of the position sensor that the frame vertical vibration signal gathered by frame Vertical Acceleration sensor (7) and position sensor shell Vertical Acceleration sensor (8) gather delivers to DSP signal acquisition and processing apparatus (21) by mechanical signal collecting unit (18), at the output of servo amplifier (17), Hall current sensor (16) is housed, for measuring the current signal that servo amplifier (17) exports, in the hydraulic cylinder for reduction system (6) measured by position sensor (9), piston displacement signal converts the signal of telecommunication of 4 ~ 20mA to by position transmitter (12), is input to DSP signal acquisition and processing apparatus (21) together with the current signal that Hall current sensor (16) detects by electrical signal collection unit (19), hydraulic cylinder rodless cavity pressure measurement sensor (11) is housed for measuring the pressure signal of hydraulic cylinder rodless cavity at the rodless cavity of hydraulic cylinder for reduction system (6), and deliver to hydraulic pressure signal collecting unit (20) by hydraulic cylinder rodless cavity pressure measurement transmitter (15), finally be input to DSP signal acquisition and processing apparatus (21), at the rod chamber of hydraulic cylinder for reduction system (6), the back pressure signal that hydraulic cylinder rod chamber pressure measurement sensor (10) measures hydraulic cylinder rod chamber is housed, and deliver to hydraulic pressure signal collecting unit (20) by hydraulic cylinder rod chamber pressure measurement transmitter (14), finally be input to DSP signal acquisition and processing apparatus (21), the mechanical signal that DSP signal acquisition and processing apparatus (21) gathers mechanical signal collecting unit (18), the electric signal that electrical signal collection unit (19) gathers and the hydraulic pressure signal that hydraulic pressure signal collecting unit (20) gathers carry out signal transacting and spectrum analysis, work as mechanical signal, electric signal, the frequency spectrum of hydraulic pressure signal close to and amplitude transfinites time, milling train generation mechanical electronic hydraulic coupling vertical vibration is described.
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| CN201410472927.5A CN104190724B (en) | 2014-09-17 | 2014-09-17 | A kind of measurement mechanism of down-pressing system of rolling mill mechanical electronic hydraulic coupling vertical vibration |
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| CN201410472927.5A CN104190724B (en) | 2014-09-17 | 2014-09-17 | A kind of measurement mechanism of down-pressing system of rolling mill mechanical electronic hydraulic coupling vertical vibration |
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| CN105007059B (en) * | 2015-07-24 | 2017-09-19 | 太原理工大学 | The current control notch filter that a kind of electromechanical coupled vibration suppresses |
| CN107597850B (en) * | 2017-08-31 | 2019-07-23 | 武汉钢铁有限公司 | Determine the method, apparatus, computer storage medium and equipment of cold-rolling mill vibration source |
| CN110449469B (en) * | 2019-07-15 | 2020-07-17 | 太原理工大学 | Corrugated roller mill roller system vibration detection control device and control method |
| CN118180161B (en) * | 2024-05-17 | 2024-07-19 | 太原理工大学 | Method and device for constructing multidimensional coupling vibration identification model of strip mill roller system |
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| DE4039647A1 (en) * | 1990-12-12 | 1992-06-17 | Rolf Wendler | Measurement value processing system for rolling mill - uses multiple channel measurement value acquisition system between processing system and rolling mill |
| JP2964887B2 (en) * | 1994-10-06 | 1999-10-18 | 住友金属工業株式会社 | Method for detecting chattering in rolling mills |
| JPH08141612A (en) * | 1994-11-14 | 1996-06-04 | Nippon Steel Corp | Method for detecting chattering in rolling mill |
| JP2000158044A (en) * | 1998-11-27 | 2000-06-13 | Kawasaki Steel Corp | Method for detecting chattering in cold rolling mill and device therefor |
| FR2877862B1 (en) * | 2004-11-12 | 2007-02-16 | Vai Clecim Soc Par Actions Sim | METHOD FOR DETECTING VIBRATIONS OF A ROLLER CAGE |
| CN201179527Y (en) * | 2007-12-04 | 2009-01-14 | 上海宝钢工业检测公司 | Continuous rolling mill strip steel vibrating vein monitoring early warning apparatus |
| KR101249168B1 (en) * | 2009-12-18 | 2013-03-29 | 주식회사 포스코 | The method and system to control quality in cold rolling system |
| CN102107222B (en) * | 2009-12-24 | 2012-08-29 | 上海梅山钢铁股份有限公司 | On-line vibration detection device and method for equipment state of hot finishing mill |
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