CN101266226A - Meridian tyre steel wire cord defect permanent magnetism excitation magnetic distortion detection probe and method - Google Patents
Meridian tyre steel wire cord defect permanent magnetism excitation magnetic distortion detection probe and method Download PDFInfo
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- CN101266226A CN101266226A CNA2008100644982A CN200810064498A CN101266226A CN 101266226 A CN101266226 A CN 101266226A CN A2008100644982 A CNA2008100644982 A CN A2008100644982A CN 200810064498 A CN200810064498 A CN 200810064498A CN 101266226 A CN101266226 A CN 101266226A
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Abstract
The invention provides a radial tires steel core defect permanent magnetism excitation magnetic distortion detecting probe and method, related to a radial tires steel core defect non-destructive inspection detecting device and method, to solve the problem that the device cost and maintenance cost is high in the present of X ray and the health of the human is hurt. The device comprises a detection probe and a test control circuit, wherein the detection probe is composed of two hall element detection arrays, permanent magnet and two yokes; and the test control circuit is composed of a plurality of signal amplifiers, A/D transducers, singlechip controller and display. The probe uses permanent magnetism excitation to generate magnetic field and the hall element detection arrays between the probe and steel cord detect the aberrance of magnetic field due to the steel core defect. If the detection result is compared with the detection result without defect, the presence of detect and the simple type of the defect can be judged.
Description
Technical field
The present invention relates to a kind of nondestructive examination pick-up unit that detects meridian tyre steel wire cord defect, also relate to a kind of method that detects meridian tyre steel wire cord defect.
Background technology
The detection of radial ply tyre steel wire cord defective (fracture of wire etc.) has great importance for improving running safety, stationarity and conevying efficiency etc., the equipment that also need detect steel wire cord defect in a large number at tyre rebuilding and maintenance industry.The general at present method check meridian tyre steel wire cord defect that adopts radioscopy, equipment cost that this method is used and maintenance cost height, X ray also has harm to human body.Develop that a kind of cost is low, the life-span is long, checkout equipment (comprising small-sized and portable checkout equipment) safe in utilization is the urgent need of the manufacturing of all-steel cord radial, renovation and maintenance industry.
Summary of the invention
The permanent magnetism excitation magnetic distortion detection probe and the method that the purpose of this invention is to provide a kind of meridian tyre steel wire cord defect, the method check meridian tyre steel wire cord that it can solve present employing radioscopy exists used equipment cost and maintenance cost height, X ray human body to be had the problem of harm.
The permanent magnetism excitation magnetic distortion detection probe of meridian tyre steel wire cord defect, it is made up of detection probe and telemetry circuit; Described detection probe is made up of N utmost point Hall element detection arrays, S utmost point Hall element detection arrays, permanent magnet, N utmost point yoke and S utmost point yoke; N utmost point Hall element detection arrays is made up of a plurality of equidistant Hall elements that are in line, S utmost point Hall element detection arrays is made up of a plurality of equidistant Hall elements that are in line, and described telemetry circuit comprises a plurality of signal amplifiers, a plurality of A/D converter, singlechip controller and display; End to end successively and formation " jaw " shape of N utmost point yoke, permanent magnet and S utmost point yoke, N utmost point Hall element detection arrays is laid on the lower surface of N utmost point yoke, S utmost point Hall element detection arrays is laid on the lower surface of S utmost point yoke, the parallel and column alignment of row of the Hall element in the Hall element in the N utmost point Hall element detection arrays and the S utmost point Hall element detection arrays; The Hall voltage signal output part of each Hall element connects the input end of a signal amplifier, the output terminal of each signal amplifier connects the input end of an A/D converter, the output terminal of each A/D converter connects an input end of singlechip controller, and an output terminal of singlechip controller connects the input end of display.
The permanent magnetism excitation magnetic distortion detection method of meridian tyre steel wire cord defect, it comprises the steps: one, demarcate: calibration process is by using the N utmost point Hall element detection arrays and the S utmost point Hall element detection arrays of detection probe, according to specified order the surface of flawless all-steel cord radial-ply tyre is scanned, the direction of scanning is along the line direction of N utmost point Hall element detection arrays and S utmost point Hall element detection arrays, detect the Distribution of Magnetic Field of each position of flawless meridian tyre steel wire cord, note the pairing data of each position Distribution of Magnetic Field by the internal memory of singlechip controller; Two, use the N utmost point Hall element detection arrays and the S utmost point Hall element detection arrays of detection probe, scanning sequency and direction of scanning according to timing signal are scanned the surface of detected all-steel cord radial-ply tyre, detect the Distribution of Magnetic Field of each position of flawless meridian tyre steel wire cord, note the pairing data of each position Distribution of Magnetic Field by the internal memory of singlechip controller; Three, comparison demarcates whether each same scan position pairing data of Distribution of Magnetic Field exists the difference that surpasses permission between meridian tyre steel wire cord and the detected meridian tyre steel wire cord one by one; If have, think that then there is defective in this meridian tyre steel wire cord; If no, think that then this meridian tyre steel wire cord does not have defective.
The present invention has following beneficial effect: one, the present invention is a kind of device that is used for meridian tyre steel wire cord defect is carried out qualitative detection, it can be to the major defect of all-steel cord (as fracture of wire, perk, diffusing limit, the winding displacement angle is not just) detect, provide the main type of position, defective place and steel wire cord defect, can determine according to relevant test stone whether this radial-ply tyre satisfies the requirement of certified products, this detection probe matches with synkinesia mechanism, can realize the quality of production in the radial-ply tyre batch production process is carried out on-line monitoring, guarantee unacceptable product is separated from production line.Two, detection probe can be used separately, also can many use simultaneously, detection signal amplify by amplifier and mould/number conversion after compare with the data of the flawless meridian tyre steel wire cord of standard, provide the simple types of defective, and the zone at the place that points out deficiencies.Permanent magnet excitation magnetic field by permanent magnet and yoke generation, detect the caused distortion of field of steel wire cord defect by the Hall element detection arrays, and testing result and normal flawless testing result compared, it is the simple types that decidable has or not defective and defective, judge or acceptance or rejection, provide defective, type, quantity and the position, place of this meridian tyre steel wire cord by display.Three, the present invention has simple in structurely, easy to detect, accurate, and to the undamaged advantage of radial-ply tyre, the method check meridian tyre steel wire cord that has solved radioscopy exists used equipment cost and maintenance cost height, X ray human body to be had the problem of harm.
Description of drawings
Fig. 1 is the structural representation of detection probe of the present invention, Fig. 2 is that the A of Fig. 1 is to view, Fig. 3 utilizes probe of the present invention to detect the synoptic diagram of meridian tyre steel wire cord defect, Fig. 4 is the Distribution of Magnetic Field synoptic diagram when detecting the zero defect meridian tyre steel wire cord, Fig. 5 is the just not caused distortion of field synoptic diagram of meridian tyre steel wire cord winding displacement angle, Fig. 6 is a meridian tyre steel wire cord fracture of wire synoptic diagram, Fig. 7 is the caused distortion of field space distribution of a meridian tyre steel wire cord fracture of wire defective synoptic diagram, the figure that occupy the top among the figure represents flawless meridian tyre steel wire cord, and the figure that occupy the below represents the meridian tyre steel wire cord of fracture of wire.
Embodiment
Embodiment one: specify present embodiment in conjunction with Fig. 1 and Fig. 2, the permanent magnetism excitation magnetic distortion detection probe of the meridian tyre steel wire cord defect of present embodiment, it is made up of detection probe 1 and telemetry circuit; Described detection probe 1 is made up of N utmost point Hall element detection arrays 1-1, S utmost point Hall element detection arrays 1-2, permanent magnet 1-3, N utmost point yoke 1-4 and S utmost point yoke 1-5; N utmost point Hall element detection arrays 1-1 is made up of five equidistant Hall elements that are in line 9, S utmost point Hall element detection arrays 1-2 is made up of five equidistant Hall elements that are in line 9, and described telemetry circuit comprises ten signal amplifiers 3, ten A/D converters 4, singlechip controller 5 and displays 6; End to end successively and formation " jaw " shape of N utmost point yoke 1-4, permanent magnet 1-3 and S utmost point yoke 1-5, N utmost point Hall element detection arrays 1-1 is laid on the lower surface of N utmost point yoke 1-4, S utmost point Hall element detection arrays 1-2 is laid on the lower surface of S utmost point yoke 1-5, the parallel and column alignment of row of the Hall element 9 among the Hall element 9 among the N utmost point Hall element detection arrays 1-1 and the S utmost point Hall element detection arrays 1-2; The Hall voltage signal output part of each Hall element 9 connects the input end of a signal amplifier 3, the output terminal of each signal amplifier 3 connects the input end of an A/D converter 4, the output terminal of each A/D converter 4 connects an input end of singlechip controller 5, and an output terminal of singlechip controller 5 connects the input end of display 6.
Principle of work of the present invention is: by permanent magnet excitation, between each yoke and detected meridian tyre steel wire cord, produce constant magnetic field, the size in this magnetic field is subjected to the size of all-steel cord and the influence of distributional pattern, the Hall voltage data that record by the Hall element detection arrays on the path in magnetic field by the yoke lower end are shone upon the size in this magnetic field and are distributed, when the all-steel cord defectiveness, distort in magnetic field, its size and distribute to produce change is by determining all-steel cord whether defectiveness and defect type etc. to the judgement of change amount and type.The position that defective produces is relevant with the scanning probe order, can be unique definite.Because probe end is equipped with a plurality of Hall elements that are provided with according to certain rules, they can judge the distortion of field in certain zone corresponding with the probe end size like this, also just can judge pairing steel wire cord defect situation in this zone.When the not timing of all-steel cord winding displacement angle, its distortion of field is shown in Fig. 5.The distortion of field when the all-steel cord fracture of wire is shown in Fig. 7.
Embodiment two: in conjunction with Fig. 1 present embodiment is described, the difference of present embodiment and embodiment one is: it also comprises alarm 7, and the signal input part of alarm 7 connects another output terminal of singlechip controller 5.The defective of tyre steel wire cord both showed by display that the mode by alarm equipment alarm provided again, and operating personnel are come into plain view.
Embodiment three: the permanent magnetism excitation magnetic distortion detection method of present embodiment meridian tyre steel wire cord defect comprises the steps: one, demarcate: calibration process is by the N utmost point Hall element detection arrays 1-1 and the S utmost point Hall element detection arrays 1-2 of detection probe 1, according to specified order the surface of flawless all-steel cord radial-ply tyre is scanned, the direction of scanning is along the line direction of N utmost point Hall element detection arrays 1-1 and S utmost point Hall element detection arrays 1-2, detect the Distribution of Magnetic Field of each position of flawless meridian tyre steel wire cord, note the pairing data of each position Distribution of Magnetic Field by the internal memory of singlechip controller 5; Two, use the N utmost point Hall element detection arrays 1-1 and the S utmost point Hall element detection arrays 1-2 of detection probe 1, scanning sequency and direction of scanning according to timing signal are scanned the surface of detected all-steel cord radial-ply tyre, detect the Distribution of Magnetic Field of each position of flawless meridian tyre steel wire cord, note the pairing data of each position Distribution of Magnetic Field by the internal memory of singlechip controller 5; Three, comparison demarcates whether each same scan position pairing data of Distribution of Magnetic Field exists the difference that surpasses permission between meridian tyre steel wire cord and the detected meridian tyre steel wire cord one by one; If have, think that then there is defective in this meridian tyre steel wire cord; If no, think that then this meridian tyre steel wire cord does not have defective.
When the surface of all-steel cord radial-ply tyre is scanned, detection probe 1 is arranged on detected radial-ply tyre crown near inboard position by mechanical hook-up, detection probe 1 moves reciprocatingly according to command speed along the axis direction of radial-ply tyre, radial-ply tyre externally rotates according to command speed under the effect of drive unit, detection probe 1 is finished the scanning to all-steel cord at the compound motion of the full crown of inside surface do covering of crown like this.
In the actual detected process, can provide the higher limit and the lower limit in detected magnetic field, that is to say that when magnetic field intensity changes just mean that the nonstandard or tiny flaw of some of all-steel cord allows as long as the percent of change is no more than a certain setting value, it is qualified to be considered as; If the actual magnetic field data that records drops within the upper limit value and lower limit value of setting, and the situation of Distribution of Magnetic Field (data are with the variation of position) is identical with the situation of demarcating, and this radial-ply tyre is exactly qualified.In the use labelling apparatus can be installed, to determine the beginning detection position and the end position of radial-ply tyre.
Claims (3)
1, the permanent magnetism excitation magnetic distortion detection probe of meridian tyre steel wire cord defect, it is made up of detection probe (1) and telemetry circuit, it is characterized in that described detection probe (1) is made up of N utmost point Hall element detection arrays (1-1), S utmost point Hall element detection arrays (1-2), permanent magnet (1-3), N utmost point yoke (1-4) and S utmost point yoke (1-5); N utmost point Hall element detection arrays (1-1) is made up of a plurality of equidistant Hall elements that are in line (9), S utmost point Hall element detection arrays (1-2) is made up of a plurality of equidistant Hall elements that are in line (9), and described telemetry circuit comprises a plurality of signal amplifiers (3), a plurality of A/D converter (4), singlechip controller (5) and display (6); End to end successively and formation " jaw " shape of N utmost point yoke (1-4), permanent magnet (1-3) and S utmost point yoke (1-5), N utmost point Hall element detection arrays (1-1) is laid on the lower surface of N utmost point yoke (1-4), S utmost point Hall element detection arrays (1-2) is laid on the lower surface of S utmost point yoke (1-5), the parallel and column alignment of row of the Hall element (9) in the Hall element (9) in the N utmost point Hall element detection arrays (1-1) and the S utmost point Hall element detection arrays (1-2); The Hall voltage signal output part of each Hall element (9) connects the input end of a signal amplifier (3), the output terminal of each signal amplifier (3) connects the input end of an A/D converter (4), the output terminal of each A/D converter (4) connects an input end of singlechip controller (5), and an output terminal of singlechip controller (5) connects the input end of display (6).
2, the permanent magnetism excitation magnetic distortion detection probe of meridian tyre steel wire cord defect according to claim 1 is characterized in that it also comprises alarm (7), and the signal input part of alarm (7) connects another output terminal of singlechip controller (5).
3, the permanent magnetism excitation magnetic distortion detection method of meridian tyre steel wire cord defect, it is characterized in that it comprises the steps: one, demarcate: calibration process is by using the N utmost point Hall element detection arrays (1-1) and the S utmost point Hall element detection arrays (1-2) of detection probe (1), according to specified order the surface of flawless all-steel cord radial-ply tyre is scanned, the direction of scanning is along the line direction of N utmost point Hall element detection arrays (1-1) with S utmost point Hall element detection arrays (1-2), detect the Distribution of Magnetic Field of each position of flawless meridian tyre steel wire cord, note the pairing data of each position Distribution of Magnetic Field by the internal memory of singlechip controller (5); Two, use the N utmost point Hall element detection arrays (1-1) and the S utmost point Hall element detection arrays (1-2) of detection probe (1), scanning sequency and direction of scanning according to timing signal are scanned the surface of detected all-steel cord radial-ply tyre, detect the Distribution of Magnetic Field of each position of flawless meridian tyre steel wire cord, note the pairing data of each position Distribution of Magnetic Field by the internal memory of singlechip controller (5); Three, comparison demarcates whether each same scan position pairing data of Distribution of Magnetic Field exists the difference that surpasses permission between meridian tyre steel wire cord and the detected meridian tyre steel wire cord one by one; If have, think that then there is defective in this meridian tyre steel wire cord; If no, think that then this meridian tyre steel wire cord does not have defective.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100644982A CN101266226A (en) | 2008-05-14 | 2008-05-14 | Meridian tyre steel wire cord defect permanent magnetism excitation magnetic distortion detection probe and method |
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| CNA2008100644982A CN101266226A (en) | 2008-05-14 | 2008-05-14 | Meridian tyre steel wire cord defect permanent magnetism excitation magnetic distortion detection probe and method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412270A (en) * | 2013-08-21 | 2013-11-27 | 北矿机电科技有限责任公司 | Portable permanent magnet magnetism detection device with adjustable magnetic field |
| CN105092698A (en) * | 2015-09-11 | 2015-11-25 | 威海山河电气有限公司 | Nondestructive testing device and method for wire cord fabric of tire carcass |
| US9442093B2 (en) | 2009-04-09 | 2016-09-13 | Michelin Recherche Et Techniques S.A. | Tire metallic cable anomaly detection method and apparatus |
| CN107703207A (en) * | 2017-09-27 | 2018-02-16 | 武汉理工大学 | A kind of suspension cable the cannot-harm-detection device |
| CN109781832A (en) * | 2019-03-19 | 2019-05-21 | 哈尔滨工业大学（深圳） | A kind of method and excitation unit of coated steel strip damage check |
| CN112834605A (en) * | 2021-03-09 | 2021-05-25 | 马勇男 | Steel cord fabric detection method |
| WO2023029562A1 (en) * | 2021-09-03 | 2023-03-09 | 威海华菱光电股份有限公司 | Defect detection system for wirecord fabric |
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2008
- 2008-05-14 CN CNA2008100644982A patent/CN101266226A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9442093B2 (en) | 2009-04-09 | 2016-09-13 | Michelin Recherche Et Techniques S.A. | Tire metallic cable anomaly detection method and apparatus |
| CN103412270A (en) * | 2013-08-21 | 2013-11-27 | 北矿机电科技有限责任公司 | Portable permanent magnet magnetism detection device with adjustable magnetic field |
| CN103412270B (en) * | 2013-08-21 | 2016-07-06 | 北矿机电科技有限责任公司 | The permanent magnetism magnetic detection apparatus of portable controlling magnetic field |
| CN105092698A (en) * | 2015-09-11 | 2015-11-25 | 威海山河电气有限公司 | Nondestructive testing device and method for wire cord fabric of tire carcass |
| CN105092698B (en) * | 2015-09-11 | 2018-03-27 | 威海山河电气有限公司 | Carcass wirecord fabric the cannot-harm-detection device and method |
| CN107703207A (en) * | 2017-09-27 | 2018-02-16 | 武汉理工大学 | A kind of suspension cable the cannot-harm-detection device |
| CN109781832A (en) * | 2019-03-19 | 2019-05-21 | 哈尔滨工业大学（深圳） | A kind of method and excitation unit of coated steel strip damage check |
| CN112834605A (en) * | 2021-03-09 | 2021-05-25 | 马勇男 | Steel cord fabric detection method |
| CN112834605B (en) * | 2021-03-09 | 2023-07-14 | 马勇男 | Wirecord fabric detection method |
| WO2023029562A1 (en) * | 2021-09-03 | 2023-03-09 | 威海华菱光电股份有限公司 | Defect detection system for wirecord fabric |
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Open date: 20080917 |