CN104190724A - Measuring device for mechanical-electrical-hydraulic coupling vertical vibration of screw-down system of rolling mill - Google Patents
Measuring device for mechanical-electrical-hydraulic coupling vertical vibration of screw-down system of rolling mill Download PDFInfo
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- CN104190724A CN104190724A CN201410472927.5A CN201410472927A CN104190724A CN 104190724 A CN104190724 A CN 104190724A CN 201410472927 A CN201410472927 A CN 201410472927A CN 104190724 A CN104190724 A CN 104190724A
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- 230000008878 coupling Effects 0.000 title claims abstract description 28
- 238000010168 coupling process Methods 0.000 title claims abstract description 28
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 28
- 238000005096 rolling process Methods 0.000 title claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 17
- 230000009467 reduction Effects 0.000 claims description 17
- 238000009530 blood pressure measurement Methods 0.000 claims description 16
- 238000003801 milling Methods 0.000 claims description 13
- 230000001133 acceleration Effects 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000013459 approach Methods 0.000 claims description 3
- 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
- 238000012360 testing method Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000011328 necessary treatment Methods 0.000 abstract 1
- 238000011897 real-time detection 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
- 230000010355 oscillation Effects 0.000 description 2
- 238000011160 research Methods 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
- 238000005516 engineering process Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000005555 metalworking 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
The invention provides a measuring device for mechanical-electrical-hydraulic coupling vertical vibration of a screw-down system of a rolling mill, and belongs to the technical field of fault detection of rolling mills. The measuring device is characterized in that real-time detection on mechanical-electrical-hydraulic coupling vertical vibration is realized, signals are collected from mechanics, electrics and hydraulic pressure, and the mechanical-electric-hydraulic coupling vertical vibration of the rolling mill can be detected and warned in an online manner by processing and analyzing the signals. When the rolling mill is in a mechanical-electrical-hydraulic coupling vertical vibration state, the measuring device can give an alarm in time and reminds operators of taking necessary treatment measures, and safe running of the rolling mill is guaranteed. The measuring device has a quite high economic benefit and high application value for enterprises.
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 real-time online collection and Treatment Analysis to down-pressing system of rolling mill mechanical signal, electric signal, hydraulic pressure signal, can be realized online detection and early warning to down-pressing system of rolling mill mechanical electronic hydraulic coupled vibrations fault.
Background technology
Thereby milling train is to make rolled piece roll out a kind of metal working equipment of expection thickness band by having the roll of certain roll gap, is one of visual plant of steel rolling.Down-pressing system of rolling mill collection machinery, electronics, multiple subsystems such as hydraulic pressure are in one, under perturbation action, very easily produce mechanical electronic hydraulic coupling vertical vibration, when the research Fifth Octave vertical vibration that to show when occurrence frequency be 500 ~ 700Hz, can cause belt steel surface to occur the striped that light and shade replaces, affect product quality, also can generate obvious oscillation mark at roller surface, accelerate the roller surface rate of wear, in the time of third octave vertical vibration that occurrence frequency is 150 ~ 250Hz, can make strip thickness error increase, when serious, also may cause waste product, broken belt is device damage even, if rolling mill vibration phenomenon can not be found early and take measures, can produce harmful effect to the economic benefit of enterprise.
For milling train vertical vibration phenomenon, Chinese scholars has been done a large amount of research with regard to vibration mechanism, vibration suppression etc., but the online detection of vertical vibration fault is confined to more to the detection of a single state.For example, there is the vertical vibration parameter by detecting the each mechanical link of milling train to carry out Fault Identification, also there is the electric parameter by detecting milling train work to carry out Fault Identification, but also not have at present simultaneously from special purpose device mechanical, electric, that hydraulic pressure three aspects: parameter 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 solve the real-time test problems of mechanical electronic hydraulic coupling vertical vibration, open a kind of simultaneously from mechanical, electric, hydraulic pressure three aspects: collection signal, and by signal processing analysis, milling train mechanical electronic hydraulic coupling vertical vibration is carried out to the online technical scheme that detects identification and report to the police.
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 of being intended to solve, simultaneously from machinery, electric, hydraulic pressure three aspects: collection signal, and by signal processing analysis, milling train mechanical electronic hydraulic coupling vertical vibration is carried out to the online device that detects identification and report to the police, this device is made up of hydraulic pressing down system in rolling mill and signals collecting and processing section, described in it, 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, 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 measure the variable quantity of roll gap with respect to the change in location of cylinder body by detecting hydraulic cylinder for reduction system 6 pistons, 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 shell vibration signal input DSP signal acquisition and processing apparatus 21 that the frame vibration signal being 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 is exported, the hydraulic cylinder for reduction system piston displacement signal that position sensor 9 is measured converts the electrical signal collection unit 19 of inputting DSP signal acquisition and processing apparatus 21 together with the current signal that the signal of telecommunication of 4 ~ 20mA detects with Hall current sensor 16 to by position transmitter 12, 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 be input to the hydraulic pressure signal collecting unit 20 of DSP signal acquisition and processing apparatus 21 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 be input to the hydraulic pressure signal collecting unit 20 of DSP signal acquisition and processing apparatus 21 by hydraulic cylinder rod chamber pressure measurement transmitter 14, the mechanical signal that DSP signal acquisition and processing apparatus 21 gathers mechanical signal collecting unit 18, the hydraulic pressure signal that the electric signal that electrical signal collection unit 19 gathers and hydraulic pressure signal collecting unit 20 gather carries out signal processing and spectrum analysis, work as mechanical signal, electric signal, when the frequency spectrum of hydraulic pressure signal approaches and amplitude transfinites, illustrate that mechanical electronic hydraulic coupling vertical vibration may occur milling train, DSP signal acquisition and processing apparatus 21 sends alarm signal, alert is processed.
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 online detection of vibration fault in prior art and be confined to the problem that a single state detects more.
2, the present invention is simultaneously from machinery, electric, hydraulic pressure three aspects: collection signal, and by signal processing analysis, milling train mechanical electronic hydraulic coupling vertical vibration is carried out to online detect identification and warning, find early can cause belt steel surface to occur the striped that light and shade replaces while having solved the Fifth Octave vertical vibration that mechanical electronic hydraulic coupling occurrence frequency is 500 ~ 700Hz, affect product quality, also can generate obvious oscillation mark at roller surface, accelerate the roller surface rate of wear and in the time of third octave vertical vibration that occurrence frequency is 150 ~ 250Hz, can make strip thickness error increase, when serious, also may cause waste product, broken belt is the problem of device damage even, the mechanical electronic hydraulic coupling vertical vibration producing can work to hydraulic pressing down system in rolling mill time detects and Realtime Alerts online, ensure the safe operation of milling train.Enterprise is had to important construction value and economic benefit.
Brief description of the drawings
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 sensors
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:
Below in conjunction with accompanying drawing 1, the measurement mechanism of a kind of down-pressing system of rolling mill mechanical electronic hydraulic coupling of the present invention vertical vibration is described further.
According to accompanying drawing 1, the shell of position sensor 9 is fixed on to the top of rolling-mill housing 1, position sensor 9 moves together with piston in hydraulic cylinder for reduction system 6 and the current signal that converts the displacement signal of the piston detecting to 4 ~ 20mA by position transmitter 12 is sent to electrical signal collection unit 19, position sensor shell Vertical Acceleration sensor 8 is arranged on to the cover top portion of position sensor 9, for the vibration signal of the position sensor recording 9 shells is sent to mechanical signal collecting unit 18, frame Vertical Acceleration sensor 7 is arranged on to the top of rolling-mill housing 1, for the vibration signal of the rolling-mill housing recording 1 is sent to mechanical signal collecting unit 18, output at servo amplifier 17 is installed Hall current sensor 16, the current signal that the servo amplifier recording 17 is exported 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, be used for the pressure signal of the rodless cavity of measuring 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, be used for the pressure signal of the rod chamber of measuring 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 being gathered by mechanical signal collecting unit 18, the hydraulic pressure signal that the electric signal that electrical signal collection unit 19 gathers and hydraulic pressure signal collecting unit 20 gather carries out data processing and spectrum analysis, work as mechanical signal, electric signal, when the frequency spectrum of hydraulic pressure signal approaches and amplitude transfinites, illustrate that mechanical electronic hydraulic coupling vertical vibration may occur milling train, DSP signal acquisition and processing apparatus 21 sends alarm signal, alert is carried out troubleshooting.
Claims (1)
1. the measurement mechanism of a down-pressing system of rolling mill mechanical electronic hydraulic coupling vertical vibration, it is characterized in that a kind of mechanical electronic hydraulic coupling vertical vibration real-time test problems of being intended to solve, simultaneously from machinery, electric, hydraulic pressure three aspects: collection signal, and by signal processing analysis, milling train mechanical electronic hydraulic coupling vertical vibration is carried out to the online device that detects identification and report to the police, this device is made up of hydraulic pressing down system in rolling mill and signals collecting and processing section, 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 characterised in that it is a kind of simultaneously from machinery, electric, hydraulic pressure three aspects: collection signal, and the measurement mechanism that milling train mechanical electronic hydraulic coupling vertical vibration is detected online and reported to the police by data processing and analysis, the shell of position sensor (9) is fixed on to the top of rolling-mill housing (1), the moving part of position sensor (9) moves with together with 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 input of the position sensor that the frame vertical vibration signal being gathered by frame Vertical Acceleration sensor (7) and position sensor shell Vertical Acceleration sensor (8) gather is delivered 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, be used for measuring the current signal of servo amplifier (17) output, in the hydraulic cylinder for reduction system (6) that position sensor (9) is measured, 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) with together with the current signal of Hall current sensor (16) detection 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), the back pressure signal of hydraulic cylinder rod chamber pressure measurement sensor (10) measurement hydraulic cylinder rod chamber is housed at the rod chamber of hydraulic cylinder for reduction system (6), 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 hydraulic pressure signal that the electric signal that electrical signal collection unit (19) gathers and hydraulic pressure signal collecting unit (20) gather carries out signal processing and spectrum analysis, work as mechanical signal, electric signal, when the frequency spectrum of hydraulic pressure signal approaches and amplitude transfinites, milling train generation mechanical electronic hydraulic coupling vertical vibration is described.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN104190724A true CN104190724A (en) | 2014-12-10 |
| CN104190724B CN104190724B (en) | 2016-03-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007059A (en) * | 2015-07-24 | 2015-10-28 | 太原理工大学 | Current control notch filter capable of restraining electromechanical coupled vibration |
| CN107597850A (en) * | 2017-08-31 | 2018-01-19 | 武汉钢铁有限公司 | Determine method, apparatus, computer-readable storage medium and the equipment of cold-rolling mill vibration source |
| CN110449469A (en) * | 2019-07-15 | 2019-11-15 | 太原理工大学 | A kind of ripple rolling mill roll system vibration detection control device and control method |
| CN118180161A (en) * | 2024-05-17 | 2024-06-14 | 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007059A (en) * | 2015-07-24 | 2015-10-28 | 太原理工大学 | Current control notch filter capable of restraining electromechanical coupled vibration |
| 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 |
| CN107597850A (en) * | 2017-08-31 | 2018-01-19 | 武汉钢铁有限公司 | Determine method, apparatus, computer-readable storage medium and the equipment of cold-rolling mill vibration source |
| CN110449469A (en) * | 2019-07-15 | 2019-11-15 | 太原理工大学 | A kind of ripple rolling mill roll system vibration detection control device and control method |
| CN118180161A (en) * | 2024-05-17 | 2024-06-14 | 太原理工大学 | Method and device for constructing multidimensional coupling vibration identification model of strip mill roller system |
| 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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| CN104190724B (en) | 2016-03-30 |
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