CN102313749A - Laser speckle detection device and method for tire of engineering machine - Google Patents
Laser speckle detection device and method for tire of engineering machine Download PDFInfo
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- CN102313749A CN102313749A CN2010102195491A CN201010219549A CN102313749A CN 102313749 A CN102313749 A CN 102313749A CN 2010102195491 A CN2010102195491 A CN 2010102195491A CN 201010219549 A CN201010219549 A CN 201010219549A CN 102313749 A CN102313749 A CN 102313749A
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Abstract
The invention discloses a laser speckle detection device and a laser speckle detection method for a tire of an engineering machine. Negative pressure is applied to the external environment of the tire, the tire is horizontally arranged and is driven to rotate, and the inner side and the outer side of the tire are detected by using two probes respectively, so that the detection of defects of a deep layer inside the tire is facilitated; therefore, the defects existing inside the tire and specific positions of the defects are accurately detected, so that the accuracy of flaw detection inside the tire of the engineering machine is improved and optimized. The detection device comprises a vacuum device which forms a negative pressure environment, and a testing device and a rotating device which are arranged inside the vacuum device, wherein the testing device is used for testing the inner side and the outer side of a detected tire by using a laser speckle technology respectively, and is provided with an inner probe and an outer probe, namely two independently-controlled and operated laser probes which can be moved and positioned along the vertical and horizontal directions; and the rotating device is used for bearing the detected tire and driving the detected tire to synchronously rotate.
Description
Technical field
The present invention relates to a kind ofly adopt inside and outside 2 laser probes to carry out the device and the detection method of laser speckle carrying out flaw detection, belong to rubber manufacturing machinery and industrial automation field to the tire under the rotation status.
Background technology
Follow developing rapidly of industries such as domestic in recent years mining, construction work; Service property (quality) for the large-scale engineering machinery tire is had higher requirement; Use the restriction of place environment, overweight load and road surface conditions to it; Off-the-road tyre should possess higher wearing quality, anti-piercing through and high overload performance, thus inside tires defective flaw detection (like mass defects such as air entrapment and delaminations) is just seemed particularly important.
The method of inspection of existing domestic conventional off-the-road tyre; Be to implement pick test through destructive test; This type of detection method only can be estimated the qualification rate of workmanship substantially; Can't guarantee that but all tires that dispatch from the factory reach criterion of acceptability, and the air entrapment defective can't detect through these type of conventional sense means.Because the existence of air entrapment can directly cause off-the-road tyre easy blowing out under the environment of above-mentioned heavy duty or inclement condition, thereby make the uncontrollable automobile steering of driver and be easy to take place the major accident of car crash.
Also just like the following existing detection method of disclosed another kind of formerly applying for a patent; The application number of this patent is 200410077522.8; Name is called the laser speckle tire nondestructive testing instrument, wherein in being provided with the sensing chamber of vacuum plant through the detection head motion be connected with one can be vertically, level and the laser speckle detection head that rotatablely moves.Below detection head, be the tire automatic positioning equipment that is used to carry and locate tire.Said detection head motion comprises the detection head connecting link and the horizontal mobile mechanism that is connected with connecting link, vertical movement mechanism, rotational motion mechanism that is connected with detection head.Said rotational motion mechanism comprises rotary drive motor, swing pinion, rotary connector.Said tire automatic positioning equipment comprises the detecting head that is used to measure diameter of tyres and is used to carry and the indoor conveying belt of mobile tyre; Detecting head moves through the indoor conveying belt of computer program-driven after recording diameter of tyres, thereby makes tire be positioned central authorities of sensing chamber.
Like the technical scheme that above-mentioned patent provided; Tire is delivered to sensing chamber inside and promptly is positioned a fixed position; One cover driving mechanism of tire top drive detection head along the tire inboard or the outside rotate in a circumferential direction and implement and detect, so there is following shortcoming and defect in this patent:
For the large-scale engineering machinery tire, its thickness greatly changes the inside tires gas volume that causes by external pressure and changes and be difficult to cause and surface of tyre deformation as only detecting in the tire inboard or the outside, be difficult to detect the defective of inside tires deep layer.
The inside and outside footpath of off-the-road tyre is bigger, during the laser probe rotation, needs bigger radius of turn, when rotation stops, causing bigger vibration influence detection efficiency and effect easily.
Adopt a laser detection head to take pictures along circumferentially being rotated, its level, adjusting vertical or the rotation angle receive bigger restriction, are unfavorable for the raising of image definition and detection efficiency.
Summary of the invention
The present invention provides a kind of off-the-road tyre laser speckle pick-up unit and method thereof; Its purpose is to solve defective and the deficiency that exists in the prior art; In the handoff procedure that carries out normal pressure and negative pressure of vacuum environment successively, with the tire horizontal positioned and drive its rotation, utilize 2 probes to carry out the laser imaging of taking pictures to sidewall, medial and lateral and tyre surface respectively; Thereby the light path phase change that causes before and after the reconstruction deformations of tyre detects possibility and particular location that inherent vice exists exactly.
The object of the invention is; Cause its outside surface generation deformation based on tire because of outside negative pressure environment; Thereby the light path phase change that the surface of tyre deformation that utilizes laser probe to detect to cause owing to air entrapment or delamination causes; Thereby confirm and exactly with inherent vice position, operation such as size measurement, improve and the accuracy of optimizing project machinery inside tires carrying out flaw detection.
Another goal of the invention is; Overcome because the defective that causes of inside tires structure (causes the deformation on the corresponding surface of tire in ipsilateral performance intensity not to the influence that detects more easily from the near more defective of surface of tyre; Intensity between defective and the surface of tyre is difficult to reflect the deformation of defective under different conditions more greatly more); Detect in the tire inboard or the outside respectively, to improve the accuracy that detects.
Goal of the invention also is, control also reduces the quality that the defective that detects because of single laser probe rotation improves detecting operation, with the detection demand of the giant tire that is adapted to different physical dimension, section width specification.
For realizing the foregoing invention purpose, described off-the-road tyre laser speckle pick-up unit mainly includes:
Form the vacuum plant of detection of negative pressure environment, and be arranged on vacuum plant inner proving installation and whirligig.Be with the difference of prior art,
Proving installation is used for carrying out phase place respectively in tire to be detected medial and lateral takes pictures, and it has the interior probe and outer probe that can move along the vertical and horizontal directions and locate, and promptly has the laser probe of 2 independent controls and operation.
Whirligig is used for carrying and driving tire to be detected synchronously being rotated, and promptly tire to be detected rotates together with whirligig in testing process.
Based on above-mentioned basic improvement project, the inboard or the outside of adopting inside and outside 2 laser probes to center on tire to be detected respectively, are independently detected, and the position influence to detection accuracy effectively can overcome one's shortcomings.
The testing result that inside and outside laser probe forms can improve the accuracy of detection comparatively significantly, and can't there be the blind area of detection in the tire under the rotation status.
For further improving the sharpness of tire photographic images and avoiding existing the blind area, can take following improvement project:
Described proving installation includes, and is used for carrying out in tire to be detected inboard the phase place process of taking pictures, and probe vertically carries out the interior probe rotatable mechaninism that rotation is regulated in the control.
Be used for carrying out the phase place process of taking pictures, control outer probe and vertically carry out the outer probe rotatable mechaninism that rotation is regulated, and control outer probe and vertically carry out the highly vertical micro-adjusting mechanism of outer probe of adjusting in the tire to be detected outside.
Further improvement and refinement scheme to said whirligig are; Whirligig has the turret of surface bears tire to be detected above that; Turret is connected in through bearing holder (housing, cover) and is located at the driven gear in the rotating shaft, and driven gear is rotated by motor-driven through the driving gear that is connected with a joggle.
Rotating shaft is installed on the center of base, and the bottom of base is provided with the bearing that bears the vertical acting force of turret, on base, is provided with several equably and is used for the auxiliary bearing that bears turret level and vertical acting force.
The additional modifications scheme of carrying out to said vacuum plant is that vacuum plant includes vacuum chamber, dress tire door and pressure relief device.Wherein, proving installation and whirligig are installed in the vacuum chamber, and vacuum chamber is connected in vacuum pump.
For improving the wobble accuracy of inside and outside 2 laser probes on level, vertical and photo angle and control dirigibility, the proving installation of admissible following characteristic refinement.Particularly,
Proving installation includes a frame, and frame is provided with and drives interior probe, outer probe simultaneously along vertical mobile elevating mechanism, and elevating mechanism is provided with interior probe horicontal motion mechanism and outer probe horicontal motion mechanism.
Probe rotatable mechaninism on interior probe horicontal motion mechanism, installing.
Pop one's head in outside the vertical micro-adjusting mechanism of outer probe is installed on the horizontal mobile mechanism, outer probe rotatable mechaninism is installed on the vertical micro-adjusting mechanism of popping one's head in outside.
Foregoing is the improvement project of off-the-road tyre laser speckle pick-up unit provided by the present invention.
Can realize following off-the-road tyre laser speckle detection method based on using above-mentioned detection device:
Carry out in the handoff procedure of normal pressure and negative pressure of vacuum environment in vacuum plant inside; Adopt laser speckle technique to rebuild the light path phase change that causes before and after the deformations of tyre to be detected, through possibility and the particular location of phase image before and after the deformation of contrast common sector to confirm that inside tires defective to be detected exists.
Different with existing detection method is that in testing process, tire to be detected is carried on the whirligig and with whirligig and synchronously is rotated.
Interior probe in the proving installation, outer probe detect to the inside and outside sidewall and the tyre surface of tire to be detected respectively.
Further improvement is in testing process, to include the step of popping one's head in tire to be detected inboard in the control, vertically carrying out photo angle rotation adjusting with refinement scheme.
The improvements that also can take are, in testing process, include the step of popping one's head in the tire to be detected outside outside controlling, vertically positioning highly adjusting and photo angle rotation adjusting.
For optimizing precision and the controllability that 2 laser probes are taken pictures and formed images to the different sectors of tire under the rotation status; In testing process, include; The 1st testing process that under tire original state to be detected, adopts 2 probes to take pictures and form images to interior, upper lateral part sidewall and tyre surface respectively
And with behind 180 ° of the tire flip verticals to be detected, to sidewall, bottom, remaining medial and lateral take pictures the imaging the 2nd testing process.
The embodiment of more optimizing is, in the 1st testing process and the 2nd testing process, respectively in turn with reference to state take pictures, vacuumize, stress state is taken pictures, tire rotates, with reference to state is taken pictures, release, stress state are taken pictures detection step;
When taking pictures imaging each time, the medial and lateral of tire to be detected are divided into different sector to realize the detection of whole piece tire.
Like described basic means of above-mentioned detection method and flow process, the essence of detection method of the present invention is exactly in turn to carry out taking pictures, change test cabinet internal pressure, stress state with reference to state to take pictures to accomplish the detection of each sector of tire.
Detecting principle is through the outside tires environment is applied negative pressure; Make its air entrapment or delamination form deformation because of external pressure changes at outer surface of tire; Adopt laser interference principle and the mode of shearing photograph to rebuild the light path phase change that causes before and after the deformations of tyre, and confirm its size and position in tire.
Content to sum up, off-the-road tyre laser speckle pick-up unit of the present invention and method thereof have following advantage and beneficial effect:
1, realized to the improvement that has the laser speckle detection method now; Through rotatablely moving of tire; The level of 2 laser probes, vertically and rotation campaign to implement comprehensive detection to sidewall, tire shoulder, tyre surface, make image more clear and stable, thus the accuracy of effective raising detection;
2, can be adapted to the thicker present situation of off-the-road tyre sidewall and tyre surface; There is bigger difference in the deformation that air entrapment causes in inside and outside both sides; And adopt outer probe and interior probe to carry out the mode that the inside and outside both sides of tire are detected respectively, can guarantee correctness and integrality that sidewall, tyre surface are detected effectively;
3, can optimize and reduce taking up room of proving installation and whirligig, detect and processing cost thereby save effectively;
4, can be adapted to the demand of the giant tire detection of different physical dimension and section width specification;
Description of drawings
Combine accompanying drawing that the present invention is done further explanation at present;
Fig. 1 is the structural representation of said laser speckle pick-up unit;
Fig. 2 is the structural representation of said proving installation;
Fig. 3 is the structural representation of said whirligig;
Fig. 4 is the structural representation of said vacuum plant;
Fig. 5 is the location of 2 laser probes in the said testing process and the synoptic diagram of taking pictures;
Have vacuum plant 1, proving installation 2, whirligig 3, tire 4 like Fig. 1 to shown in Figure 5;
Interior probe horicontal motion mechanism 23, line slideway 231, synchronous pulley 232, motor 233 is with 234 synchronously, angle sheave 235, briquetting 236, band tooth support 237, interior probe moves horizontally frame 238;
Outer probe horicontal motion mechanism 24, motor 242 is with 243 synchronously, angle sheave 244, briquetting 245, band tooth support 246, outer probe moves horizontally frame 247;
Interior probe rotatable mechaninism 25, motor 251, active synchronization belt wheel 252 is with 253 synchronously, driven synchronous pulley 254, swing shaft 255, fixed block 256;
In Fig. 5, A, B, C point are adjustment and the take pictures position of interior probe 26 in tire 4 inboards, and D, E, F, G point pop one's head in 28 in the adjustment in tire 4 outsides and the position of taking pictures outside being.
Embodiment
Be arranged on the proving installation 2 and whirligig 3 of vacuum plant 1 inside.Wherein,
Proving installation 2 is used for carrying out phase place respectively in tire to be detected 4 medial and lateral takes pictures, and it has the interior probe 26 and outer probe 28 that can move along the vertical and horizontal directions and locate.
Described proving installation 2 has a unit frame 21; Frame 21 is provided with the elevating mechanism 22 that the driving laser probe moves up and down; The probe horicontal motion mechanism 23 and the horicontal motion mechanism 24 of popping one's head in outward on elevating mechanism 22, being fixed with are to control moving horizontally of 2 laser probes.
Probe rotatable mechaninism 25 in interior probe horicontal motion mechanism 23 is provided with is with the rotation campaign of probe 26 in realizing.
Pop one's head in outside and also be provided with the vertical micro-adjusting mechanism 27 of outer probe on the horizontal mobile mechanism 24, vertically carry out trimming movement to realize outer probe 28.The vertical micro-adjusting mechanism 27 of popping one's head in outside is provided with outer probe rotatable mechaninism 29, to realize the rotation campaign of outer probe 28.
Elevating mechanism 22 has the vertical line guide rail 223 that is installed in upper spider 211 both sides; Between two line slideways 223, be connected with a crane 226 through following drive mechanism; This driving mechanism comprises a motor 221; The driving shaft of motor 221 connects a ball-screw 222 and drives its rotation, and 224 on the nut that is enclosed within on the ball-screw 222 is fixed on the crane 226, and crane 226 is fixedly connected on the slide block 225 of line slideway 223.
On crane 226, be fixed with two line slideways 231, its slide block connects interior probe horizontally moving device 23 and outer probe horizontally moving device 24 respectively, operates with the tangential movement that realizes inside and outside 2 laser probes respectively through following 2 driving mechanisms.
The driving mechanism of the interior probe horizontally moving device 23 in 2 driving mechanisms comprises that one drives synchronous pulley 232 motor rotating 233; 232 of synchronous pulleys are through be with 234 to connect angle sheaves 235 synchronously; And is connected interior the probe with 234 briquetting 236 with band tooth support 237 and moves horizontally frame 238 through clamping synchronously, realize its tangential movement.
In addition; The driving mechanism of outer probe horizontally moving device 24 comprises that one drives synchronous pulley 241 motor rotating 242; 241 of synchronous pulleys are through be with 243 to connect angle sheaves 244 synchronously; And move horizontally frame 247 outward through clamping synchronously to be connected to pop one's head in band tooth support 246 with 243 briquetting 245, realize its tangential movement.
The vertical micro-adjusting mechanism 27 of described outer probe, the two vertical line slideways 273 that move horizontally on the frame 247 through probe outside being fixed on connect, and operate with the trimming movement that realizes outer probe 28 in the vertical directions through following driving mechanism.Driving mechanism comprises that one drives active synchronization belt wheel 271 motor rotating 272; 271 of active synchronization belt wheels are through be with 274 to connect driven synchronous pulley 277 synchronously; And is connected the vertical travelling carriage 278 of outer probe with band tooth support 276 through the briquetting 275 that clamps synchronously with 274, realize that outer the probe 28 operate in the trimming movement of vertical direction.
Probe rotatable mechaninism 25 in described comprises that one is fixed in the motor 251 of interior probe arm 239, and its output shaft connects an active synchronization belt wheel 252 and drives its rotation.Active synchronization belt wheel 252 is through be with 253 to connect driven synchronous pulley 254 synchronously, and driven synchronous pulley 254 is set on the end of swing shaft 255, to drive swing shaft 255 rotations.The fixed block 256 of probe arm 239 is set in the interlude of swing shaft 255 in being connected in, and interior probe 26 is fixed in the other end of swing shaft 255, with the rotation campaign of probe 26 in realizing.
Described outer probe rotatable mechaninism 29 comprises that one is fixed in the motor 291 of the vertical travelling carriage 278 of outer probe, and its output shaft connects an active synchronization belt wheel 292 and drives its rotation.Active synchronization belt wheel 292 is through be with 293 to connect driven synchronous pulley 294 synchronously.Driven synchronous pulley 294 is set on the end of swing shaft 295, drives swing shaft 295 rotations.The fixed block 296 that is connected in the vertical travelling carriage 278 of outer probe is set in the interlude of swing shaft 295, pop one's head in outward 28 be fixed in swing shaft 295 the other end, to realize the rotation action of outer probe 28.
Described whirligig 3 comprises a base 31, and there is a rotating shaft 32 at the center of base 31; Bearing 33 is housed in the rotating shaft 32, makes it bear the main radial force of turret 38, the axial force of turret 38 is mainly born bearing 34 by another of base 31 bottoms; Connect a driving gear 36 on the output shaft of motor 35; Drive driven gear 37 rotations through engagement, driven gear 37 is connected with turret 38 again, makes turret 38 with rotating shaft 3) be the center rotation.
Be evenly equipped with bearing 39 on the base 31, make its as supplemental support bear certain axially and radial force make turret 38 stability of rotation.
Based on the detection method of using above-mentioned off-the-road tyre laser speckle pick-up unit; Carry out in the handoff procedure of normal pressure and negative pressure of vacuum environment in vacuum plant 1 inside; Adopt the laser means of taking pictures to rebuild the light path phase change that causes before and after tire 4 deformation to be detected, through possibility and the particular location of phase image before and after the deformation of contrast common sector to confirm that tire 4 inherent vices to be detected exist.
In testing process, tire 4 to be detected is carried on the whirligig 3 and with whirligig 3 and synchronously is rotated, and the interior probe 26 in the proving installation 2, pops one's head in and 28 carries out laser to the inside and outside sidewall of tire 4 to be detected and tyre surface respectively and take pictures and form images outward.Wherein,
In testing process, include, probe is 26 in tire to be detected 4 inboards, vertically carry out the step that the photo angle rotation is regulated in the control; The outer probe of control is 28 in tire to be detected 4 outsides, vertically position the step of highly regulating with photo angle rotation adjusting.
And the results of more refinement is, in testing process, includes, the 1st testing process that under tire 4 original states to be detected, adopts 2 probes to take pictures and form images to interior, upper lateral part sidewall and tyre surface respectively,
And with behind 180 ° of tire 4 flip verticals to be detected, to sidewall, bottom, remaining medial and lateral take pictures the imaging the 2nd testing process.
In the 1st testing process and the 2nd testing process, in turn carry out respectively normal pressure take pictures imaging, vacuumize, negative pressure is taken pictures imaging, the detection step of release reduction;
When taking pictures imaging each time, the medial and lateral of tire 4 to be detected are divided into different sector to form many group contrast images.
The described laser speckle detection method of present embodiment is taken pictures through carrying out normal pressure repeatedly in fact exactly, is vacuumized, negative pressure is taken pictures, the detection of each sector of tire was also accomplished in release originally.Consider because the sidewall and the tyre surface of off-the-road tyre are all thicker, and the deformation that the bubble of inside tires causes in inside and outside both sides might differ bigger, so utilize outer laser probe and inner laser probe that both sides inside and outside the tire are detected simultaneously.
Concrete testing process is following:
At first, the upper sidewall of tire 4 is detected, concrete course of action is following:
(1), tire is put on the correct position of wheelwork 3, the dress tire door 13 of vacuum chamber 11 is closed according to the physical dimension of tire 4;
(2), put in place according to probe 26 in the physical dimension of tire 4 and 28 the relevant action of popping one's head in outward;
(3), interior probe 26 and pop one's head in outward and 28 start working, take the photo of first sector under normal pressure;
(4), vacuum pump 12 is extracted into set pressure with vacuum chamber 11, interior probe 26 takes the photo of this sector under negative pressure with outer probe 28, and two width of cloth pictures are carried out inter-process, accomplishes the detection of this sector;
(5), rush down pressure device 14 and open, make vacuum chamber 11 and atmosphere, vacuum chamber 11 returns to atmospheric pressure state;
(6), rush down pressure device 14 and close, tire 4 rotates to the detection that this sector is carried out in second sector;
(7), repeat (3) to (6) step and accomplish the one-time detection of upper sidewall.
Secondly, the tyre surface of tire 4 is detected, promptly after having detected the upper sidewall, control inside and outside probe and reorientate and repeat the detection of testing process that above-mentioned (3) to (6) go on foot with the completion tyre surface.
At last, use fork truck that tire 4 is taken out after, reorientate after 180 ° of its upsets, carry out the detection of lower sidewall again, particularly with reference to step (1) to (7).
Claims (10)
1. an off-the-road tyre laser speckle pick-up unit includes the vacuum plant (1) that forms the detection of negative pressure environment, and is arranged on vacuum plant (1) inner proving installation (2) and whirligig (3),
It is characterized in that: proving installation (2) is used for detecting respectively in tire to be detected (4) medial and lateral, and it has the interior probe (26) and the outer probe (28) that can move along the vertical and horizontal directions and locate;
Whirligig (3) is used for carrying and driving tire to be detected (4) synchronously being rotated.
2. off-the-road tyre laser speckle pick-up unit according to claim 1 is characterized in that: described proving installation (2) includes,
Be used for carrying out in tire to be detected (4) inboard the phase place process of taking pictures, probe (26) vertically carries out the interior probe rotatable mechaninism (25) that rotation is regulated in the control;
Be used for carrying out the phase place process of taking pictures in tire to be detected (4) outside; The outer probe rotatable mechaninism (29) that rotation is regulated is vertically carried out in outer pop one's head in (28) of control, and the outer probe of control (28) vertically carries out the highly vertical micro-adjusting mechanism of outer probe (27) of adjusting.
3. off-the-road tyre laser speckle pick-up unit according to claim 1 and 2 is characterized in that: described whirligig (3) includes,
The turret (38) of surface bears tire to be detected (4) above that; Turret (38) is connected in through bearing (33) and is sheathed on the driven gear (37) in the rotating shaft (32); Driven gear (37) through the driving gear (36) that is connected with a joggle by motor (35) driven in rotation; Rotating shaft (32) is installed on the center of base (31), and the bottom of base (31) is provided with the bearing (34) that bears the vertical acting force of turret (38)
On base (31), be provided with several equably and be used for the auxiliary bearing (39) that bears turret (38) level and vertical acting force.
4. off-the-road tyre laser speckle pick-up unit according to claim 1 and 2 is characterized in that: described vacuum plant (1) includes vacuum chamber (11), dress tire door (13) and pressure relief device (14),
Proving installation (2) and whirligig (3) are installed in the vacuum chamber (11), and vacuum chamber (11) is connected in vacuum pump (12).
5. off-the-road tyre laser speckle pick-up unit according to claim 2 is characterized in that: described proving installation (2) includes,
One frame (21), frame (21) are provided with and drive interior probe (26), outer probe (28) simultaneously along vertical mobile elevating mechanism (22), and elevating mechanism (22) is provided with interior probe horicontal motion mechanism (23) and outer probe horicontal motion mechanism (24),
Probe rotatable mechaninism (25) in interior probe horicontal motion mechanism (23) is gone up installation,
The horizontal mobile mechanism (24) of popping one's head in is outside gone up outer probe vertical micro-adjusting mechanism (27) is installed, and the vertical micro-adjusting mechanism (27) of popping one's head in is outside gone up outer probe rotatable mechaninism (29) is installed.
6. based on the detection method of using above-mentioned off-the-road tyre laser speckle pick-up unit; Carry out in the handoff procedure of normal pressure and negative pressure of vacuum environment in vacuum plant (1) inside; Adopt the laser means of taking pictures to rebuild the light path phase change that causes before and after tire to be detected (4) deformation; Possibility and the particular location of phase image to confirm that tire to be detected (4) inherent vice exists through before and after the deformation of contrast common sector is characterized in that:
In testing process, tire to be detected (4) is carried on the whirligig (3) and with whirligig (3) and synchronously is rotated;
Interior probe (26) in the proving installation (2), outer probe (28) detect to the inside and outside sidewall and the tyre surface of tire to be detected (4) respectively.
7. off-the-road tyre laser speckle detection method according to claim 6 is characterized in that: in testing process, include, in the control probe (26) inboard at tire to be detected (4), vertically carry out the step that the photo angle rotation is regulated.
8. according to claim 6 or 7 described off-the-road tyre laser speckle detection methods; It is characterized in that: in testing process, include, the outer probe of control (28) is in tire to be detected (4) outside, vertically position the step of highly regulating with photo angle rotation adjusting.
9. off-the-road tyre laser speckle detection method according to claim 8; It is characterized in that: in testing process, include; The 1st testing process that under tire to be detected (4) original state, adopts 2 probes to detect to interior, upper lateral part sidewall and tyre surface respectively
And with behind 180 ° of tire to be detected (4) flip verticals, the 2nd testing process that detects to sidewall, bottom, remaining medial and lateral.
10. off-the-road tyre laser speckle detection method according to claim 9; It is characterized in that: in the 1st testing process and the 2nd testing process, in turn carry out respectively with reference to state take pictures, vacuumize, stress state is taken pictures, tire rotates, with reference to state is taken pictures, release, stress state are taken pictures detection step;
When detecting each time, the medial and lateral of tire to be detected (4) are divided into different sector and detect.
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| CN 201010219549 CN102313749B (en) | 2010-06-30 | 2010-06-30 | Laser speckle detection device and method for tire of engineering machine |
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| CN113167743A (en) * | 2018-12-20 | 2021-07-23 | 倍耐力轮胎股份公司 | Method and station for inspecting tyres |
| CN109655468A (en) * | 2019-01-29 | 2019-04-19 | 吉林大学 | A kind of device detecting vehicle tyre inner tread degree of impairment |
| CN110455807A (en) * | 2019-04-02 | 2019-11-15 | 洛阳理工学院 | For the DSC bubble lossless detection method and device of anti-corrosion pipeline external anti-corrosion layer |
| CN113916561A (en) * | 2021-12-13 | 2022-01-11 | 东营嘉信机械有限公司 | New energy automobile tire self-checking device |
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