CN108414537A - The device and method of comprehensive quick detection tire tread and sidewall internal flaw - Google Patents
The device and method of comprehensive quick detection tire tread and sidewall internal flaw Download PDFInfo
- Publication number
- CN108414537A CN108414537A CN201810314261.9A CN201810314261A CN108414537A CN 108414537 A CN108414537 A CN 108414537A CN 201810314261 A CN201810314261 A CN 201810314261A CN 108414537 A CN108414537 A CN 108414537A
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- China
- Prior art keywords
- detector group
- sidewall
- detection
- tire
- shearography
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
Abstract
The invention discloses a kind of device and method of comprehensive quick detection tire tread and sidewall internal flaw, using the Shearography imager based on shearography technology as detector group, detector group includes the tyre surface detector group for detecting tire tread and the sidewall detector group for detecting tire sidewall；Tyre surface detector group includes six sets of Shearography imagers, and several lasers of identical quantity are arranged between adjacent two Shearographies imager；Sidewall detector group also includes six sets of Shearography imagers.The present invention by design 360 degree comprehensive tyre surface detector group and sidewall detector group, two detector groups can completely cover the region to be measured of tire to be measured without rotation, only need to once it be shot, it can complete the detection in one week of a truck tyre, efficient, quickly detection tire internal flaw purpose can be achieved, simultaneously without rotating detector group, thus it can reach better detection result.
Description
Technical field
The present invention relates to the comprehensive fast of nondestructive tire detection technique field more particularly to a kind of truck tyre internal flaw
Speed detector and detection method.
Background technology
Utility model patent 200420102848.7 discloses a kind of laser speckle nondestructive detector for tyre, which is
Indoor in the detection equipped with vacuum plant, by the connection of detector motion, there are one can be vertical, horizontal and rotary motion
Laser speckle detector head；It is the tire auto-location device for carrying and positioning tire in the lower section of detector；In sensing chamber
On side wall, there is door to be opened/closed.The detector is mainly used in detection tire interiors of products defect, especially suitable for steel wire meridian
The detection of line wheel tire can be applicable in the quality testing of other field such as space flight industry, applies also for production line and works continuously.
The laser speckle nondestructive detector for tyre is simple in structure, without huge vibration abatement, be not necessarily to a large amount of consumptive materials, automatic upper (lower) tire
Device is practical succinct, and testing cost is low, testing result real-time display, whole audience Non-contact nondestructive, can be carried out to any position of tire
Detection, the position of automatic identification defect and size, detection tire are efficient.However, the detector is limited to tire diameter size,
2 detectors can only be at most installed, the detection of whole tire is completed, need to rotate detector, the ability after rotating 180 °
Whole tire checking is complete, and detection efficiency is low.Meanwhile spinning movement may cause equipment to shake, and influence the stabilization of detection
Property.In the use and production field of tire, inside tires defects detection must carry out, while also require quickly and smart
Degree is high, Poul Dorset Sheep, therefore it is required that detector can complete the detection of a complete tyre without rotation, there is no this at present
Kind detection device is available.
Invention content
The technical problem to be solved by the present invention is in view of the drawbacks of the prior art, provide, a kind of realization is simple in structure, detects
Process is convenient and efficient, need to only carry out once shooting the comprehensive quick detection that can complete the detection in one week of a truck tyre
The device and method of tire tread and sidewall internal flaw.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：A kind of comprehensive quick detection tire tread
With the device of sidewall internal flaw, detection is used as using the Shearography imager based on shearography technology
Head group, detector group have laser, optical system and video camera, detector group and its laser, optical system and video camera
It is all connected with control system, whole device is mounted in the vacuum detecting room for being equipped with vacuum system, it is characterised in that：The detector
Group includes two groups, respectively is used to detect the tyre surface detector group of tire tread and the sidewall for detecting tire sidewall is detected
Head group, the two is 360 degree of comprehensive detector group；Tyre surface detector group and sidewall detector group are installed on detector and fix
In mechanism, and tyre surface detector group is installed on the lower section of sidewall detector group by a liftable bar；Tyre surface detector group includes
There are six sets of Shearography imagers, six sets of Shearography imagers uniform in a ring in one 360 degree of plane
It is arranged, several lasers of identical quantity, laser and shearing speckle is set between adjacent two Shearographies imager
Interference imaging instrument is arranged to loop configuration along same plane, and the outer diameter of the annular surrounded is less than the tire bore dia of detected tyre, and
Its laser is towards external exposure；Sidewall detector group also includes six sets of Shearography imagers, and six sets of shearing speckles are dry
It relates to imager to be also uniformly arranged in a ring in one 360 degree of plane, the laser of sidewall detector group irradiates downward.
Further, the laser of the tyre surface detector group is divided into upper layer and lower layer setting, and two layers of laser shares 40
Laser.
Further, the tire is surveyed detector group and is mounted on the jacking system of detection fixed mechanism, formation can on move down
Dynamic structure.
A kind of detection method of the device based on aforementioned comprehensive quick detection tire tread and sidewall internal flaw, it is special
Sign is：The place of laser uniform irradiation tire, laser irradiation forms speckle, and reflection light is through interference optics, inside
Portion forms light path dislocation, finally reaches the interference of video camera imaging target surface, is imaged by camera acquisition；The often set of sidewall detector group
Shearography imager complete independently shot detection function, when detection, tire sidewall is divided into 6 regions, often set dislocation
Speckle interference imager is directed at a region and is detected；Specifically carry out according to the following steps,
1) before detection starts, tire is delivered into fixed position in vacuum detecting room, tyre surface detection by control system automatically
Head group and sidewall detector group are controlled by control system respectively, are moved to suitable position, vacuum detecting room side door, which closes, to be closed；
2) start detection device, the image data that surface of tyre is once shot, while being obtained is transmitted to computer and deposits
Storage；
3) sensing chamber is evacuated, generates negative pressure, pressure difference variation reaches 15~100 millibars, then again to surface of tyre
The image data for being shot, while being obtained is transmitted to computer storage；
4) according to shearography Method And Principle, calculating is carried out to the picture shot twice by computer
Reason, to judge inside tires defect situation, and testing result is shown by computer；
Testing result is：If there is butterfly plaque-like interference fringe in the picture of display or bulge phenomenon occurring in interference fringe,
Then corresponding position existing defects；If not occurring butterfly plaque-like interference fringe or interference fringe in the picture of display not occur
Bulge is then normal inside corresponding position.
Operation principle：Using the method for laser speckle interferometry, detector shoot tire vacuum detecting room smokes pressure before and after
Picture is compared analysis to picture by computer and shows testing result.If occurring " butterfly plaque-like " interference in result picture
There is " bulge " situation in striped or interference fringe, then corresponding position existing defects；If not occurring " butterfly macules in result picture
Shape " interference fringe or interference fringe do not occur " bulge ", then corresponding position inside tires are normal.
The present invention is not necessarily to by the comprehensive tyre surface detector group and sidewall detector group, two detector groups for designing 360 degree
Rotation can completely cover the region to be measured of tire to be measured, only need to once be shot, can complete a truck tyre one
Week detects the purpose, it can be achieved that efficient, quick detection tire internal flaw, while without rotating detector group, thus reachable
To better detection result.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is tyre surface detector group floor map of the present invention；
Fig. 3 is detector group floor map in sidewall of the present invention.
In figure, 1 is tyre surface detector group, and 1-1,1-2,1-3,1-4,1-5,1-6 are Shearography imager, and 2 are
Sidewall detector group, 2-1,2-2,2-3,2-4,2-5,2-6 are Shearography imager, and 3 be laser, and 4 be optical system
System, 5 be video camera, and 6 is are detected tire, and 7 be vacuum detecting room.
Specific implementation mode
In the present embodiment, referring to FIG. 1, FIG. 2 and FIG. 3, the comprehensive quick detection tire tread and sidewall internal flaw
Device, using the Shearography imager based on shearography technology as detector group, detector group
With laser 3, optical system 4 and video camera 5, detector group and its laser 3, optical system 4 and video camera 5 are all connected with control
System (not shown) processed, whole device are mounted in the vacuum detecting room 7 for being equipped with vacuum system；The detector group includes two
Group, respectively the tyre surface detector group 1 for detecting tire tread and the sidewall detector group 2 for detecting tire sidewall, two
Person is 360 degree of comprehensive detector group；Tyre surface detector group 1 and sidewall detector group 2 are installed on detector fixed mechanism
On, and tyre surface detector group 1 is installed on the lower section of sidewall detector group 2 by a liftable bar；Tyre surface detector group 1 includes
Six sets of Shearography imagers 1-1~1-6, six sets of Shearography imager 1-1~1-6 are flat at one 360 degree
It is uniformly arranged in a ring on face, several lasers 3 of identical quantity is set between adjacent two Shearographies imager, swashed
Light device 3 and Shearography imager 1-1~1-6 is arranged to loop configuration along same plane, and the outer diameter of the annular surrounded is small
In the tire bore dia of detected tyre 6, and its laser 3 is towards external exposure；Sidewall detector group 2 also includes that six sets of shearing speckles are dry
It is also equal in a ring in one 360 degree of plane to relate to imager 2-1~2-6, six sets of Shearography imager 2-1~2-6
The laser of even setting, sidewall detector group 2 irradiates downward.
The laser of the tyre surface detector group 1 is divided into upper layer and lower layer setting, and two layers of laser 3 shares 40 lasers.
The tire is surveyed detector group 2 and is mounted on the jacking system of detection fixed mechanism, and formation can move up and down structure.
The detection method of device based on aforementioned comprehensive quick detection tire tread and sidewall internal flaw, laser
The place of uniform irradiation tire, laser irradiation forms speckle, and reflection light forms light path mistake through interference optics, in inside
Position finally reaches the imaging target surface interference of video camera 5, is acquired and be imaged by video camera 5；The often set dislocation of sidewall detector group 2 dissipates
Spot interference imaging instrument 2-1~2-6 complete independently shot detection functions, when detection, tire sidewall is divided into 6 regions, and often set is wrong
Position speckle interference imager 2-1~2-6 is directed at a region and is detected；Specifically carry out according to the following steps,
1) before detection starts, tire is delivered into fixed position in vacuum detecting room 7, tyre surface detection by control system automatically
Head group 1 and sidewall detector group 2 are controlled by control system respectively, are moved to suitable position, vacuum detecting room side door, which closes, to be closed；
2) start detection device, the image data that surface of tyre is once shot, while being obtained is transmitted to computer and deposits
Storage；
3) sensing chamber is evacuated, generates negative pressure, pressure difference variation reaches 15~100 millibars, then again to surface of tyre
The image data for being shot, while being obtained is transmitted to computer storage；
4) according to shearography Method And Principle, calculating is carried out to the picture shot twice by computer
Reason, to judge inside tires defect situation, and testing result is shown by computer；
Testing result is：If there is butterfly plaque-like interference fringe in the picture of display or bulge phenomenon occurring in interference fringe,
Then corresponding position existing defects；If not occurring butterfly plaque-like interference fringe or interference fringe in the picture of display not occur
Bulge is then normal inside corresponding position.
On the present invention is described in detail, described above, only the preferred embodiments of the invention, when cannot limit
Determine the scope of the present invention, i.e., it is all according to the made equivalent changes and modifications of the application range, all should still it belong in covering scope of the present invention.
Claims (4)
1. a kind of device of comprehensive quick detection tire tread and sidewall internal flaw, using based on shearography
For the Shearography imager of technology as detector group, detector group has laser, optical system and video camera, detection
Head group and its laser, optical system and video camera are all connected with control system, and whole device, which is mounted on, is equipped with the true of vacuum system
Sky detection is indoor, it is characterised in that：The detector group includes two groups, respectively is used to detect the tyre surface detection of tire tread
Head group and the sidewall detector group for detecting tire sidewall, the two are 360 degree of comprehensive detector group；Tyre surface detector
Group and sidewall detector group are installed on detector fixed mechanism, and tyre surface detector group is installed on sidewall by a liftable bar
The lower section of detector group；Tyre surface detector group includes six sets of Shearography imagers, six sets of Shearographies at
As instrument is uniformly arranged in a ring in one 360 degree of plane, identical quantity is set between adjacent two Shearographies imager
Several lasers, laser and Shearography imager be arranged to loop configuration along same plane, the annular surrounded
Outer diameter be less than the tire bore dia of detected tyre, and its laser is towards external exposure；Sidewall detector group also includes six sets of dislocation
Speckle interference imager, six sets of Shearography imagers are also uniformly arranged in one 360 degree of plane in a ring, sidewall
The laser of detector group irradiates downward.
2. the device of comprehensive quick detection tire tread and sidewall internal flaw according to claim 1, feature exist
In：The laser of the tyre surface detector group is divided into upper layer and lower layer setting, and two layers of laser shares 40 lasers.
3. the device of comprehensive quick detection tire tread and sidewall internal flaw according to claim 1, feature exist
In：The tire is surveyed detector group and is mounted on the jacking system of detection fixed mechanism, and formation can move up and down structure.
4. a kind of detection of the device based on comprehensive quick detection tire tread described in claim 1 and sidewall internal flaw
Method, it is characterised in that：The place of laser uniform irradiation tire, laser irradiation forms speckle, and reflection light is through interferometric optical
System forms light path dislocation in inside, finally reaches the interference of video camera imaging target surface, be imaged by camera acquisition；It detects on sidewall
The often set Shearography imager complete independently shot detection function of head group, when detection, tire sidewall is divided into 6 areas
Domain often covers one region of Shearography imager alignment and is detected；Specifically carry out according to the following steps,
1) before detection starts, tire is delivered into fixed position in vacuum detecting room, tyre surface detector group by control system automatically
And sidewall detector group is controlled by control system respectively, is moved to suitable position, vacuum detecting room side door, which closes, to be closed；
2) start detection device, the image data that surface of tyre is once shot, while being obtained is transmitted to computer storage；
3) sensing chamber is evacuated, generates negative pressure, pressure difference variation reaches 15~100 millibars, then carried out again to surface of tyre
Shooting, while obtained image data is transmitted to computer storage；
4) according to shearography Method And Principle, calculation processing is carried out to the picture shot twice by computer, from
And judge inside tires defect situation, and testing result is shown by computer；
Testing result is：If there is butterfly plaque-like interference fringe in the picture of display or bulge phenomenon, phase occurring in interference fringe
The position existing defects answered；If not occurring butterfly plaque-like interference fringe or interference fringe in the picture of display not rouse
Packet is then normal inside corresponding position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314261.9A CN108414537A (en) | 2018-04-10 | 2018-04-10 | The device and method of comprehensive quick detection tire tread and sidewall internal flaw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314261.9A CN108414537A (en) | 2018-04-10 | 2018-04-10 | The device and method of comprehensive quick detection tire tread and sidewall internal flaw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108414537A true CN108414537A (en) | 2018-08-17 |
Family
ID=63134998
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810314261.9A Withdrawn CN108414537A (en) | 2018-04-10 | 2018-04-10 | The device and method of comprehensive quick detection tire tread and sidewall internal flaw |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109115786A (en) * | 2018-08-24 | 2019-01-01 | 中国人民解放军陆军军事交通学院 | Vehicle tyre laser Fast nondestructive evaluation system |
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| JP2003307465A (en) * | 2002-04-15 | 2003-10-31 | Sony Corp | Apparatus and method for inspection of grating |
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| CN109115786B (en) * | 2018-08-24 | 2023-10-20 | 中国人民解放军陆军军事交通学院 | Laser rapid nondestructive detection system for vehicle tyre |
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Application publication date: 20180817 |
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