CN108802749B - A kind of continuous belt steel hot galvanizing air knife section strip steel sideslip measuring method - Google Patents
A kind of continuous belt steel hot galvanizing air knife section strip steel sideslip measuring method Download PDFInfo
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- CN108802749B CN108802749B CN201810611254.5A CN201810611254A CN108802749B CN 108802749 B CN108802749 B CN 108802749B CN 201810611254 A CN201810611254 A CN 201810611254A CN 108802749 B CN108802749 B CN 108802749B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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Abstract
The present invention provides a kind of continuous belt steel hot galvanizing air knife section strip steel sideslip measuring method, in the fore side or transmission side of continuous belt steel hot galvanizing air knife section, strip running deviation amount detector is set, the strip running deviation amount detector includes laser range sensor and straight line slide unit mould group, laser range sensor is installed in the mounting bracket above the sliding block of straight line slide unit mould group, bracket top；Straight line slide unit mould group is driven by stepper motor or servo motor, and slide unit sliding block drags laser range sensor and moves back and forth, and measures strip position in motion process；Using high-precision laser range-finding sensor, air knife section strip steel is detected laterally with normal direction position, calculates strip transverse direction running deviation value and strip normal direction running deviation value, in order to adjust air knife and correct roller position in time, improves strip coating the thickness uniformity.
Description
Technical field
The present invention relates to continuous belt steel hot galvanizing production technical field, in particular to a kind of continuous belt steel hot galvanizing air knife section
Strip running deviation measuring method.
Background technique
In continuous belt steel hot galvanizing production process, due to sinking roller abrasion, belt plate shape are bad etc., air knife section is caused
Strip deviates target position, and strip running deviation phenomenon occurs.Under strip hot-dip galvanizing air knife section working condition, it is difficult to be known by naked eyes
Other strip running deviation amount, while sensor detection strip running deviation amount can not be also installed near air knife, thus can not adjust in time strong
The gentle cutter position of positive roller, makes strip be in the center of air knife.Continuous belt steel hot galvanizing air knife section strip steel sideslip will lead to band
Steel upper and lower surface and lateral thickness of coating are uneven, influence the surface quality and service performance of product.
In the prior art, continuous belt steel hot galvanizing air knife section strip steel sideslip measurement mainly uses induction strip
The method of edge detection calculates strip transverse direction running deviation value.Since detection device is under worst hot case, reliability and use the longevity
Life will all be affected, while detection device investment cost is higher, using also not extensive in some small and medium-sized manufacturing enterprises.
Summary of the invention
In order to solve the problems, such as described in background technique, the present invention provides a kind of continuous belt steel hot galvanizing air knife section strip steel sideslip
Measuring method detects air knife section strip steel laterally and normal direction position, calculating strip is lateral using high-precision laser range-finding sensor
Running deviation value and strip normal direction running deviation value improve strip coating the thickness uniformity in order to adjust air knife and correct roller position in time.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of continuous belt steel hot galvanizing air knife section strip steel sideslip measuring method, includes the following steps:
Step 1: strip running deviation amount detector, institute is arranged in the fore side or transmission side in continuous belt steel hot galvanizing air knife section
The strip running deviation amount detector stated includes laser range sensor and straight line slide unit mould group, above the sliding block of straight line slide unit mould group
Laser range sensor is installed in mounting bracket, bracket top；Straight line slide unit mould group is driven by stepper motor or servo motor, slide unit
Sliding block drags laser range sensor and moves back and forth, and measures strip position in motion process；
The laser range sensor runs transverse center face lmm apart from strip, and laser beam height position is in air knife knife
Hmm above lip；Straight line slide unit mould group stroke smm, midstroke is on strip operation normal direction median plane；
Step 2: strip running deviation measurement
Step 201 defines measurement range first, and strip width wmm, air knife knife lip to belt steel surface distance is d, sliding block
Position measurement rangeStrip position measurement range
Wherein: αmaxStrip normal direction running deviation value limiting value, | αmax| 8~12mm of value range；
βmaxStrip transverse direction running deviation value limiting value, | βmax| 50~200mm of value range；
N measurement point, n value range 100~200 are sampled in measurement range, slide position is respectively (d1, d2...,
dn), corresponding strip position measurements are respectively (l1, l2..., ln), strip position measurements are input to signal processing list
Member；
Step 202, strip transverse direction sideslip measurement record the strip position minimum value l in measurement rangemin, calculate strip
Lateral position running deviation value β:
By:
Step 203, strip normal direction sideslip measurement, using the normal direction running deviation value near strip transverse center point as strip
Normal direction running deviation value records the measurement point data (l near strip transverse center pointmid, dmid), calculate strip normal direction position running deviation value
α；
By:
Step 204, belt plate shape measurement, determine effective range l according to strip position measurementmin~(lmin+
W), effective measurement point is screened in effective range, and calculate each effective measurement point strip normal direction position running deviation value and
Strip lateral position, screening obtain effective measurement point；Using strip lateral position as abscissa, it is with strip normal direction position running deviation value
Ordinate is fitted belt plate shape linearity curve using least square method.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention proposes a kind of continuous belt steel hot galvanizing air knife section strip steel sideslip measuring method, realizes continuous belt steel
Strip running deviation measurement under hot galvanizing air knife section worst hot case, principle is simple, at low cost, is convenient for industrial application.
2, it using high-precision laser range-finding sensor telemeasurement continuous hot galvanizing air knife section strip steel running deviation value, realizes high
Strip running deviation measurement under warm operating condition substitutes existing induction measurement method.
Detailed description of the invention
Fig. 1 is strip running deviation amount detector scheme of installation of the invention；
Fig. 2 is the belt plate shape linear diagram of the embodiment of the present invention.
Wherein: 1- strip 2- air knife 3- straight line slide unit mould group 4- laser range sensor.
Specific embodiment
Specific embodiment provided by the invention is described in detail below in conjunction with attached drawing.
Step 1: as shown in Figure 1, strip running deviation amount is arranged in fore side or transmission side in continuous belt steel hot galvanizing air knife section
Detector, the strip running deviation amount detector includes laser range sensor 4 and straight line slide unit mould group 3, in straight line slide unit mould
Laser range sensor 4 is installed in mounting bracket above the sliding block of group 3, bracket top；Straight line slide unit mould group 3 is by stepper motor or watches
Motor driven is taken, slide unit sliding block drags laser range sensor 4 and moves back and forth, and measures 1 position of strip in motion process；
The laser range sensor 4 runs transverse center face lmm apart from strip 1, and laser beam height position is in air knife 2
Hmm above knife lip；3 stroke smm of straight line slide unit mould group, midstroke are run on normal direction median plane in strip 1；
Stepper motor or the servo motor driving of the laser range sensor 4 and straight line slide unit mould group 3 are controlled by PLC
Device processed carries out signal processing and automatic control.It is then needed using servo motor between PLC controller and motor separately equipped with servo
Driver.
Step 2: strip running deviation measurement
Step 201 defines measurement range first, and 1 width of strip is wmm, and 2 knife lip of air knife to 1 surface distance of strip is d,
3 position measurement range of sliding block1 position measurement range of strip
Wherein: αmaxStrip normal direction running deviation value limiting value, | αmax| 8~12mm of value range；
βmaxStrip transverse direction running deviation value limiting value, | βmax| 50~200mm of value range；
N measurement point, n value range 100~200 are sampled in measurement range, 3 position of sliding block is respectively (d1, d2...,
dn), corresponding 1 position measurements of strip are respectively (l1, l2..., ln), 1 position measurements of strip are input to signal processing list
Member；
Step 202, strip transverse direction sideslip measurement record the 1 position minimum value l of strip in measurement rangemin, calculate band
1 lateral position running deviation value β of steel:
By:
Step 203, strip normal direction sideslip measurement, using the normal direction running deviation value near 1 transverse center point of strip as band
Steel normal direction running deviation value records the measurement point data (l near 1 transverse center point of stripmid, dmid), it calculates 1 normal direction position of strip and runs
Deviator α；
By:
Step 204, belt plate shape measurement, determine effective range l according to 1 position measurement of stripmin~(lmin+
W), effective measurement point is screened in effective range, and calculate each effective measurement point 1 normal direction position running deviation value of strip and
1 lateral position of strip, screening obtain effective measurement point；Using 1 lateral position of strip as abscissa, with 1 normal direction position sideslip of strip
Amount is ordinate, is fitted belt plate shape linearity curve using least square method.
Specific embodiment:
Transverse center face l=5000mm is run apart from strip with laser range sensor, laser beam height position is in air knife
H=50mm above knife lip；For straight line slide unit mould group stroke s=100mm, it is as follows to calculate strip running deviation amount:
1, measurement range is defined first, and strip width w=1000mm, air knife knife lip to belt steel surface distance is d=
10mm, | αmax|=10mm, | βmax|=100mm, slide position measurement range Strip position measurement range 100 measurement points are sampled in measurement range, slide position is respectively (d1, d2...,
d100), corresponding strip position measurements are respectively (l1, l2..., l100), strip position measurements are input to signal processing list
Member；
2, strip transverse direction sideslip measurement records the strip position minimum value l in measurement rangemin=4520mm calculates band
Steel lateral position running deviation value β:
By:
By strip measured value lnIt is converted into strip lateral position ln’:l'n=ln-lmin；
3, strip normal direction sideslip measurement is run using the normal direction running deviation value near strip transverse center point as strip normal direction
Deviator records the measurement point data (l near strip transverse center pointmid, dmid) it is (5020mm, 49mm), calculate strip normal direction
Position running deviation value α；
By:
4, belt plate shape measures, and determines effective range l according to strip position measurementmin~(lmin+ w) be
(4520mm~5520mm) screens effective measurement point in effective range, and calculates the strip method of each effective measurement point
To position running deviation value and strip lateral position, screening obtains effective measurement point, is shown in Table 1:
Table 1
| Lateral position | 0 | 50 | 160 | 360 | 430 | 500 | 580 | 760 | 910 | 980 |
| Normal direction running deviation value | -1.25 | -1.22 | -1.19 | -1.17 | -1.16 | -1.15 | -1.14 | -1.12 | -1.09 | -1.06 |
As shown in Fig. 2, using strip lateral position as abscissa, using strip normal direction position running deviation value as ordinate, using most
Small square law is fitted belt plate shape linearity curve.
5, it is shown in man-machine interface, provides foundation for operative employee or automatic control.
Above embodiments are implemented under the premise of the technical scheme of the present invention, give detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to the above embodiments.Method therefor is such as without spy in above-described embodiment
Not mentionleting alone bright is conventional method.
Claims (1)
1. a kind of continuous belt steel hot galvanizing air knife section strip steel sideslip measuring method, which comprises the steps of:
Step 1: strip running deviation amount detector is arranged in the fore side or transmission side in continuous belt steel hot galvanizing air knife section, it is described
Strip running deviation amount detector includes laser range sensor and straight line slide unit mould group, is installed above the sliding block of straight line slide unit mould group
Laser range sensor is installed in bracket, bracket top；Straight line slide unit mould group is driven by stepper motor or servo motor, slide unit sliding block
It drags laser range sensor to move back and forth, measures strip position in motion process；
The laser range sensor runs transverse center face lmm apart from strip, and laser beam height position is on air knife knife lip
Square hmm；Straight line slide unit mould group stroke smm, midstroke is on strip operation normal direction median plane；
Step 2: strip running deviation measurement
Step 201 defines measurement range first, and strip width wmm, air knife knife lip to belt steel surface distance is d, slide position
Measurement rangeStrip position measurement range
Wherein: αmaxStrip normal direction running deviation value limiting value, | αmax| 8~12mm of value range；
βmaxStrip transverse direction running deviation value limiting value, | βmax| 50~200mm of value range；
N measurement point, n value range 100~200 are sampled in measurement range, slide position is respectively (d1, d2..., dn), it is right
The strip position measurements answered are respectively (l1, l2..., ln), strip position measurements are input to signal processing unit；
Step 202, strip transverse direction sideslip measurement record the strip position minimum value l in measurement rangemin, it is lateral to calculate strip
Position running deviation value β:
By:
Step 203, strip normal direction sideslip measurement, using the normal direction running deviation value near strip transverse center point as strip normal direction
Running deviation value records the measurement point data (l near strip transverse center pointmid, dmid), calculate strip normal direction position running deviation value α；
By:
Step 204, belt plate shape measurement, determine effective range l according to strip position measurementmin~(lmin+ w),
The effective measurement point of screening in effective range, and calculate the strip normal direction position running deviation value and strip cross of each effective measurement point
To position, screening obtains effective measurement point；It is vertical sit with strip normal direction position running deviation value using strip lateral position as abscissa
Mark is fitted belt plate shape linearity curve using least square method.
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| CN201810611254.5A CN108802749B (en) | 2018-06-14 | 2018-06-14 | A kind of continuous belt steel hot galvanizing air knife section strip steel sideslip measuring method |
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| CN108802749B true CN108802749B (en) | 2019-08-06 |
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| CN111926277B (en) * | 2020-09-07 | 2022-11-01 | 山东钢铁集团日照有限公司 | Device and method for inhibiting vibration of hot-dip galvanized strip steel after being discharged from zinc pot |
Citations (6)
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|---|---|---|---|---|
| JPH05154510A (en) * | 1991-11-29 | 1993-06-22 | Kawasaki Steel Corp | Method and instrument for detecting shape of welded part at butt-welding |
| JPH0829147A (en) * | 1994-07-12 | 1996-02-02 | Nippon Steel Corp | Method for measuring flatness of steel plate |
| CN205802574U (en) * | 2016-06-27 | 2016-12-14 | 攀钢集团攀枝花钢钒有限公司 | Prevent galvanizing unit strip steel from running the automatic reduction of speed control system of sideslip broken belt |
| CN106269913A (en) * | 2015-05-28 | 2017-01-04 | 鞍钢股份有限公司 | Work roll shifting milling train prevents the method for strip running deviation |
| CN107127218A (en) * | 2016-02-29 | 2017-09-05 | 鞍钢股份有限公司 | The method that radial load determines strip width and strip running deviation amount is surveyed according to plate shape roller |
| CN206818163U (en) * | 2017-06-07 | 2017-12-29 | 唐山国丰钢铁有限公司 | A kind of galvanizing printed line air knife angle and width of measuring device |
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2018
- 2018-06-14 CN CN201810611254.5A patent/CN108802749B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05154510A (en) * | 1991-11-29 | 1993-06-22 | Kawasaki Steel Corp | Method and instrument for detecting shape of welded part at butt-welding |
| JPH0829147A (en) * | 1994-07-12 | 1996-02-02 | Nippon Steel Corp | Method for measuring flatness of steel plate |
| CN106269913A (en) * | 2015-05-28 | 2017-01-04 | 鞍钢股份有限公司 | Work roll shifting milling train prevents the method for strip running deviation |
| CN107127218A (en) * | 2016-02-29 | 2017-09-05 | 鞍钢股份有限公司 | The method that radial load determines strip width and strip running deviation amount is surveyed according to plate shape roller |
| CN205802574U (en) * | 2016-06-27 | 2016-12-14 | 攀钢集团攀枝花钢钒有限公司 | Prevent galvanizing unit strip steel from running the automatic reduction of speed control system of sideslip broken belt |
| CN206818163U (en) * | 2017-06-07 | 2017-12-29 | 唐山国丰钢铁有限公司 | A kind of galvanizing printed line air knife angle and width of measuring device |
Non-Patent Citations (1)
| Title |
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| 张建岩等.连续压机钢带跑偏的影响因素及对策.《林业机械与木工设备》.1997,第25卷(第4期), |
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