CN108534705B - Automatic tire pattern depth measurement and detection method - Google Patents
Automatic tire pattern depth measurement and detection method Download PDFInfo
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- CN108534705B CN108534705B CN201810662005.9A CN201810662005A CN108534705B CN 108534705 B CN108534705 B CN 108534705B CN 201810662005 A CN201810662005 A CN 201810662005A CN 108534705 B CN108534705 B CN 108534705B
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- 238000001514 detection method Methods 0.000 title claims abstract description 106
- 238000000691 measurement method Methods 0.000 title abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000007935 neutral effect Effects 0.000 claims abstract description 5
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 3
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- 238000005299 abrasion Methods 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
- G01M17/022—Tyres the tyre co-operating with rotatable rolls
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/02—Tyres
- G01M17/027—Tyres using light, e.g. infrared, ultraviolet or holographic techniques
Abstract
The invention discloses an automatic tire pattern depth measurement and detection method, which is characterized by comprising the following steps: the method comprises the following operation steps: the steel plate is placed in front of the first detection device in a lifting mode, so that the steel plate covers the rolling shafts of the first detection device, the automobile runs from left to right from a base surface, the front wheel of the automobile presses the steel plate, passes through the first detection device and then presses the second detection device, when the wheel presses two innermost rolling shafts on the second detection device, the automobile is manually stopped, the automobile is switched to a neutral position and the hand brake is released, the automobile can automatically move forwards and backwards, and the wheel on the right side is supported by the left rolling shaft and the right rolling shaft, so that the wheel and the second detection device can be arranged in a centering mode; the automatic tire pattern depth measurement and detection method avoids the problems of low measurement speed, large labor investment and low efficiency caused by manually collecting tire pattern data one by one.
Description
Technical Field
The invention relates to an automatic tire pattern depth measurement and detection method.
Background
The tire is the only place of contact with the ground of whole car, and the year-round contact with the ground, and it is natural that the wearing and tearing are. Not only the abrasion of the road surface but also the oxidation of the road surface threatens the safety of the tire. The wear of a tire generally refers to the wear of the tire pattern, which is very important. The most important three main components of the tire are respectively: tread, carcass, and rubber formulations, which may vary in their detailed design. The three most important roles of the tread pattern are: 1. the grip force is improved; 2. noise is reduced; 3. the drainage is increased. Generally the tread pattern must be thicker than 1.6 mm, but if you are driving on slippery roads often it is better to ensure that the tread pattern is thicker than 3.2 mm. The conventional detection mode is usually manual detection with a tread rule, the detection precision is crossed, the standardization cannot be realized, the manpower is consumed, and the detection is inconvenient.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an automatic tire pattern depth measurement and detection method which is convenient, rapid and effective in measurement.
The technical scheme adopted by the invention for solving the problems is as follows:
an automatic tire pattern depth measurement detection method is characterized in that: the method comprises the following operation steps:
(1) step 1, a steel plate is placed in front of a first detection device, so that the steel plate covers a roller of the first detection device, an automobile runs from left to right from a base surface, a front wheel of the automobile presses the steel plate, passes through the first detection device and then presses a second detection device, when wheels press two innermost rollers of the second detection device, the automobile is manually stopped, the automobile is switched to a neutral position and a hand brake is released, the automobile can automatically move forwards and backwards, and the right wheel is supported by the left roller and the right roller, so that the wheel can be centered with the second detection device;
(2) step 2, manually removing the steel plate, electrifying a roller driving motor of the second detection device to realize self-locking, limiting the rotation of the two innermost rollers, and then slowly moving the second detection device through the base driving mechanism until a left wheel of the vehicle falls between the two innermost rollers of the first detection device;
(3) step 3, the lifting oil cylinder drives the lifting frame to ascend, the left lifting roller group and the right lifting roller group of the first detection device are respectively supported on the left side and the right side of the left wheel, and the left lifting roller group and the right lifting roller group of the second detection device are respectively supported on the left side and the right side of the right wheel, so that the wheels and the corresponding detection machines are centered;
(4) step 4, lifting the detection seat through the lifting arm, driving the laser ranging device to move back and forth through the sliding driving mechanism, scanning the middle tire pattern area of the tire through laser, and vertically subtracting the laser ranging device from the maximum distance obtained by the laser ranging device to obtain the minimum distance as a measurement and calculation value for reflecting the tire pattern depth;
(5) step 5, the roller driving motor works to drive the two innermost rollers to rotate, so that the corresponding tire is driven to rotate by a certain angle, the measurement positions are changed, a plurality of tread data of one tire can be obtained, and the use condition of the tire can be known more comprehensively;
(6) and 6, driving the camera device to rotate left and right by the sliding mechanism, shooting the side face of the tire, sending image data to a server, and judging whether the tire is abnormal due to external force by the background.
And (4) processing the tire groove depth data of the laser ranging device obtained on each measuring block, and judging that the tire groove depth data are abnormally worn if the absolute value of the difference between any two tire groove depth data is greater than a set gate value.
The method is used for tires with a section width of between 145 and 275 mm.
Compared with the prior art, the invention has the following advantages and effects: the automatic tire pattern depth measurement and detection method avoids the problems of low measurement speed, large labor investment and low efficiency caused by manually collecting tire pattern data one by one in a squatting mode, improves the convenience degree of operation and is beneficial to realizing automatic operation; firstly, the tyre pattern data is measured through a laser ranging device, and the data is acquired quickly, so that the measuring working efficiency and the measuring precision are ensured; the first detection device and the second detection device are automatically aligned with the tire, so that the measurement precision is improved, and the adjustment processes of the first detection device and the second detection device are adapted to the wheel base of vehicles at different distances, so that the tire tread measurement requirements of different vehicles are met.
Drawings
Fig. 1 is a schematic structural diagram of an automatic tire tread detecting table according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a first detection device according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second detection apparatus according to an embodiment of the present invention.
Fig. 4 is a schematic view of a mounting structure of a lifting frame according to an embodiment of the present invention.
FIG. 5 is a schematic view of the mounting structure of the inspection machine according to the embodiment of the present invention.
Numbering in the figures: the automobile detection device comprises an automobile 1, tires 2, a base station 3, a first detection device 4, a second detection device 5, a base 6, a lifting frame 7, a lifting cylinder 8, a left lifting roller group 9, a right lifting roller group 10, a follow-up seat 11, a roller driving mechanism 12, a sliding column 13, a detection machine 14, a detection seat 15, a lifting arm 16, a camera 17, a sliding block 18, a laser distance measuring device 19, a sliding driving mechanism 20, a foundation pit 21, a base driving mechanism 22, a roller 23, a sliding groove 24, a tension spring 25, a roller driving mechanism 26, a supporting block 27, a lead screw 28, a lead screw motor 29, a lead screw nut 30, a roller driving motor 31, a first belt pulley 32, a second belt pulley 33, a third belt pulley 34, a belt 35, a belt tensioner 36, a rack 37, a gear 38, a gear motor 39, a guide rail 40, a guide rail wheel 41, a limit switch 42 and a
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Referring to fig. 1 to 5, the automatic tire tread detection table of the embodiment includes a base 3, a first detection device 4, and a second detection device 5, where each of the first detection device 4 and the second detection device 5 includes a base 6, a lifting frame 7, a lifting cylinder 8, a left lifting roller group 9, a right lifting roller group 10, a follower base 11, a roller driving mechanism 12, a sliding column 13, and a detector 14, the detector 14 includes a detection base 15 and a lifting arm 16 for driving the detection base 15 to vertically lift, a camera 17 is fixed at an upper end of the detection base 15, a sliding block 18 is slidably disposed on the detection base 15, a laser distance measuring device 19 is fixed on the sliding block 18, a sliding driving mechanism 20 for driving the sliding block 18 to move back and forth is installed on the detection base 15, left and right ends of the lifting frame 7 are respectively installed on the base 6 through two lifting cylinders 8, a foundation pit 21 is disposed on a right side of the lifting base 3, the base 6 of the first detection device 4 is fixed in the foundation pit 21, the base 6 of the second detection device 5 is slidably mounted in the foundation pit 21, a base driving mechanism 22 for driving the base 6 of the second detection device 5 to horizontally and linearly move is arranged in the foundation pit 21,
the middle part of the follow-up seat 11 is fixed with a detector 14 for measuring the depth of the tire tread, each of the left lifting roller group 9 and the right lifting roller group 10 comprises at least three rollers 23, the end parts of two adjacent rollers 23 are respectively hinged to two ends of a connecting sheet 43, the left lifting roller group 9 and the right lifting roller group 10 are symmetrically arranged relative to the middle part of the follow-up seat 11, the lifting frame 7 is provided with a horizontally arranged sliding groove 24, the end part of the outermost roller 23 is arranged on the sliding groove 24 in a sliding manner, the lifting frame 7 is provided with a tension spring 25 for pulling the outermost roller 23 outwards, the end part of the innermost roller 23 is rotatably arranged on the follow-up seat 11, the follow-up seat 11 is provided with a roller driving mechanism 12 for driving the innermost roller 23, and by adopting the structure, when a wheel falls between the left lifting roller group 9 and the right lifting roller group 10, the lifting frame 7 is lifted by the oil cylinder 8, the outermost rollers 23 on the outermost side slide inwards, finally, the left lifting roller group 9 and the right lifting roller group 10 are respectively supported on the left side and the right side of the tire 2, the left lifting roller group 9 and the right lifting roller group 10 are symmetrically arranged, the middle portion of the follow-up seat 11, the center of the tire 2 and the center of the detector 14 are located in the same vertical plane, at least six supporting points are obtained on the tire 2, the stress area is larger, the deformation of the bottom of the tire 2 is correspondingly reduced greatly, the measuring accuracy of the tread depth of the bottom of the tire 2 is improved, the rollers 23 are driven to rotate through the roller driving mechanism 12, the tire 2 can rotate under the condition that the vehicle is shifted to a neutral position and the hand brake is released, and therefore, the tread depth data of a plurality of positions of the tire 2 can be detected through the detector 14, and the condition of the tire 2 can be comprehensively known.
Two supporting blocks 27 about being fixed with on the base 6, for the activity space that supplies the vertical activity of follow-up seat 11 between two supporting blocks 27, follow-up seat 11 is through the vertical slidable mounting of slip post 13 at base 6, roller 23 thickness equals the distance difference between the up end of supporting block 27 and the up end of base station 3, adopt this kind of structure, left lifting roller group 9, right lifting roller group 10 is put down the back, through extension spring 25, roller 23 in the outside and middle part can support on the surface of step groove, the top of roller 23 flushes with the up end of base station 3 this moment, thereby make the vehicle can be comparatively light go tire 2 to first detection device 4, on the second detection device 5, before the wheel of vehicle goes to first detection device 4, should cover the steel sheet on the roller 23 of first detection device 4, avoid skidding.
The base driving mechanism 22 comprises a screw rod 28, a screw rod motor 29 and a screw rod nut 30, the screw rod nut 30 is fixed on a base 6 of a second detection device 5 of the second detection device 5, the screw rod 28 is rotatably installed in the foundation pit 21, the screw rod 28 is matched with the screw rod nut 30, and a motor shaft of the screw rod motor 29 is connected to the screw rod 28. The roller driving mechanism 12 comprises a roller driving motor 31, a first belt pulley 32, a second belt pulley 33, a third belt pulley 34, a belt 35 and a belt tensioner 36, wherein the first belt pulley 32 and the second belt pulley 33 are respectively fixed at the end part of the innermost roller 23 of the left lifting roller group 9 and the end part of the innermost roller 23 of the right lifting roller group 10, the belt tensioner 36 and the roller driving motor 31 are fixed on the follow-up seat 11, the third belt pulley 34 is connected to a motor shaft of the roller driving motor 31, and the belt 35, the first belt pulley 32, the second belt pulley 33, the third belt pulley 34 and the belt tensioner 36 are adopted by the roller driving motor 31, so that the self-locking capacity is improved. The slide drive mechanism 20 includes a rack 37, a gear 38, and a gear motor 39, the gear motor 39 is fixed to the detection seat 15, the rack 37 is fixed to the slide block 18, the rack 37 engages with the gear 38, and the gear 38 is fixed to a motor shaft of the gear motor 39. A guide rail 40 is fixed in the foundation pit 21, and a guide rail wheel 41 supported on the guide rail 40 is rotatably mounted on the base 6 of the second detection device 5.
Preferably, a limit switch 42 for sensing the wheel is fixed to the detection base 15, and the limit switch 42 is used for sensing the two rollers 23 supported at the innermost side of the tire 2.
Preferably, the outer wall of the roller 23 is covered with a rubber anti-slip layer.
The method for measuring and detecting the pattern depth of the tire 2 by the laser ranging device 19 is as follows:
a. the first detection device 4 is lifted forwards to place a steel plate, so that the steel plate covers the rolling shafts 23 of the first detection device 4, the automobile 1 runs from the left to the right from a base surface, the front wheel of the automobile 1 presses the steel plate, passes through the first detection device 4 and then presses the second detection device 5, when the wheels press the two rolling shafts 23 at the innermost side of the second detection device 5, the automobile is manually stopped, the vehicle is switched to a neutral position and the hand brake is released, the automobile can automatically move forwards and backwards at the moment, the wheels at the right side are supported by the left rolling shaft 23 and the right rolling shaft 23, and therefore the wheels can be centered with the second detection device 5;
b. manually removing the steel plate, electrifying a roller driving motor 31 of the second detection device 5 to realize self-locking, limiting the rotation of the two innermost rollers 23, and then slowly moving the second detection device 5 through the base driving mechanism 22 until the left wheel of the vehicle falls between the two innermost rollers 23 of the first detection device 4;
c. the lifting oil cylinder 8 drives the lifting frame 7 to ascend, the left lifting roller group 9 and the right lifting roller group 10 of the first detection device 4 are respectively supported on the left side and the right side of the left wheel, and the left lifting roller group 9 and the right lifting roller group 10 of the second detection device 5 are respectively supported on the left side and the right side of the right wheel, so that the wheels and the corresponding detection machine 14 are centered;
d. the lifting arm 16 lifts the detection seat 15, the sliding driving mechanism 20 drives the laser ranging device 19 to move back and forth, the middle tire pattern area of the tire is swept through laser, and the maximum distance obtained by the laser ranging device 19 is vertically subtracted by the laser ranging device 19 to obtain the minimum distance which is used as a measured and calculated value for reflecting the tire pattern depth.
e. The roller driving motor 31 works to drive the two innermost rollers 23 to rotate, so that the corresponding tire 2 is driven to rotate by a certain angle, the measurement positions are changed, a plurality of tread data of one tire 2 can be obtained by changing a plurality of measurement positions, and the use condition of the tire 2 can be more comprehensively known.
f. Slide mechanism drive camera device horizontal rotation shoots the tire side to send image data to the server, judge whether the tire exists by the backstage and receive the abnormal condition of tire that the external force reason caused, if: wheel hub, rim wear, tire side edge wear, whether the valve cap is intact, etc.
And (3) processing the tread depth data of the laser ranging device obtained on each measuring block, and judging that the abnormal wear is caused if the absolute value of the difference between any two tread groove depth data is greater than a set gate value (the gate value depends on the pattern type and the tire diameter).
The automatic detection method is suitable for the tire with the width of the tire section between 145 mm and 275 mm. Through the research on most of the tires of joint ventures on the market, the width of the pattern channel of the bar-shaped tire of most of the joint ventures is larger than 5 mm. The outermost channel is spaced from the edge of the tyre by more than 40 mm. The laser ranging device consists of two parts of laser emission and return laser reception. The laser source of the laser ranging device moves and scans the width of the tire section in the transverse direction, and distance data is obtained by receiving the returned laser part. Since the detection is a real-time measurement, a series of continuous values exhibiting a peak-valley type distribution is obtained. The server calculates the absolute value of the difference between the maximum peak value and the minimum valley value of the measurement data, i.e., the tire pattern depth.
The laser ranging device performs one-time transverse scanning on the tire section, the driving device drives the tire to rotate by 30 degrees, the laser ranging device performs one-time transverse movement and scanning on the tire section, and the operation is repeated for 12 times until the width of 12 sections of the whole tire is detected once.
The above description of the present invention is intended to be illustrative. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (3)
1. An automatic tire pattern depth measurement detection method is characterized in that: the method comprises the following operation steps:
(1) step 1, a steel plate is placed in front of a first detection device, so that the steel plate covers a roller of the first detection device, an automobile runs from a base surface from left to right, a front wheel of the automobile presses the steel plate, passes through the first detection device and then presses a second detection device, when wheels press two innermost rollers of the second detection device, the automobile is manually stopped, the automobile is switched to a neutral position and a hand brake is released, the automobile can automatically move forwards and backwards, and the right wheel is supported by the left roller and the right roller, so that the wheel and the second detection device are arranged in a centering manner;
(2) step 2, manually removing the steel plate, electrifying a roller driving motor of the second detection device to realize self-locking, limiting the rotation of the two innermost rollers, and then slowly moving the second detection device through the base driving mechanism until a left wheel of the vehicle falls between the two innermost rollers of the first detection device;
(3) step 3, the lifting oil cylinder drives the lifting frame to ascend, the left lifting roller group and the right lifting roller group of the first detection device are respectively supported on the left side and the right side of the left wheel, and the left lifting roller group and the right lifting roller group of the second detection device are respectively supported on the left side and the right side of the right wheel, so that the wheels and the corresponding detection machines are centered;
(4) step 4, lifting the detection seat through the lifting arm, driving the laser ranging device to move back and forth through the sliding driving mechanism, scanning the middle tire pattern area of the tire through laser, and vertically subtracting the laser ranging device from the maximum distance obtained by the laser ranging device to obtain the minimum distance as a measurement and calculation value for reflecting the tire pattern depth;
(5) step 5, the roller driving motor works to drive the two innermost rollers to rotate, so that the corresponding tire is driven to rotate by a certain angle, the measurement positions are changed, a plurality of tread data of one tire are obtained, and the use condition of the tire is known more comprehensively;
(6) step 6, the sliding mechanism drives the camera device to rotate left and right to shoot the side face of the tire, image data is sent to a server, whether the abnormal condition of the tire caused by external force exists in the tire is judged by a background,
the first detection device and the second detection device respectively comprise a base, a lifting frame, a lifting oil cylinder, a left lifting roller group, a right lifting roller group, a follow-up seat, a roller driving mechanism, a sliding column and a detection machine, the detection machine comprises a detection seat and a lifting arm for driving the detection seat to vertically lift, a camera is fixed at the upper end of the detection seat, a sliding block is arranged on the detection seat in a sliding manner, a laser distance measurement device is fixed on the sliding block, a sliding driving mechanism for driving the sliding block to move back and forth is installed on the detection seat, the left end and the right end of the lifting frame are respectively installed on the base in a lifting manner through two lifting oil cylinders, a foundation pit is arranged on the right side of the base, the base of the first detection device is fixed in the foundation pit, the base of the second detection device is installed in the foundation pit in a sliding manner, and a base driving mechanism for,
the middle part of the follow-up seat is fixed with a detector for measuring the depth of the tire pattern, the left lifting roller group and the right lifting roller group respectively comprise at least three rollers, the end parts of two adjacent rollers are respectively hinged to the two ends of the connecting sheet, the left lifting roller group and the right lifting roller group are symmetrically arranged relative to the middle part of the follow-up seat, the lifting frame is provided with a sliding groove which is horizontally arranged, the end part of the roller at the outermost side is arranged on the sliding groove in a sliding manner, the lifting frame is provided with a tension spring for pulling the roller at the outermost side outwards, the end part of the roller at the innermost side is rotatably arranged on the follow-up seat, and the follow-up seat is provided with a roller driving mechanism for driving the roller at the innermost.
2. The automatic tire tread depth measurement detection method of claim 1, wherein: and (4) processing the tire groove depth data of the laser ranging device obtained on each measuring block, and judging that the tire groove depth data are abnormally worn if the absolute value of the difference between any two tire groove depth data is greater than a set gate value.
3. The automatic tire tread depth measurement detection method of claim 1, wherein: the method is used for tires with a section width of between 145 and 275 mm.
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| CN201810662005.9A CN108534705B (en) | 2018-06-25 | 2018-06-25 | Automatic tire pattern depth measurement and detection method |
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| CN201810662005.9A CN108534705B (en) | 2018-06-25 | 2018-06-25 | Automatic tire pattern depth measurement and detection method |
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| CN108534705B true CN108534705B (en) | 2020-11-24 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109724876B (en) * | 2018-11-30 | 2021-03-12 | 南通炜途汽车技术有限公司 | Toughness that car tire frame of new energy automobile rolls off production line was buckled and is hauled detects auxiliary assembly |
| CN110220473A (en) * | 2019-06-05 | 2019-09-10 | 陈子昂 | Study on tire pattern depth measurement method, device and equipment |
| CN114112443A (en) * | 2020-08-28 | 2022-03-01 | 深超光电（深圳）有限公司 | Monitoring system for monitoring wheel state and monitoring method using same |
| CN112097671B (en) * | 2020-09-18 | 2022-04-05 | 石家庄华燕交通科技有限公司 | Tire pattern depth measuring method based on laser ranging sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158159A (en) * | 1995-05-26 | 1997-08-27 | 约阿希姆·伯格 | Gauge for measuring the sculpture depth of a motor vehicle tyre |
| CN1227629A (en) * | 1996-07-04 | 1999-09-01 | 太阳电英国有限公司 | Apparatus and method for tire condition assessment |
| US6070332A (en) * | 1996-10-18 | 2000-06-06 | Aim Automotive Integrated Manufacturing, Inc. | Wheel alignment apparatus |
| CN104662390A (en) * | 2012-05-16 | 2015-05-27 | 罗伯特·博世有限公司 | Method and system for the automatic optical inspection of the tread pattern of at least one wheel of a vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9921133B2 (en) * | 2015-07-29 | 2018-03-20 | Hon Hai Precision Industry Co., Ltd. | Tread depth measuring system |
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- 2018-06-25 CN CN201810662005.9A patent/CN108534705B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158159A (en) * | 1995-05-26 | 1997-08-27 | 约阿希姆·伯格 | Gauge for measuring the sculpture depth of a motor vehicle tyre |
| CN1227629A (en) * | 1996-07-04 | 1999-09-01 | 太阳电英国有限公司 | Apparatus and method for tire condition assessment |
| US6070332A (en) * | 1996-10-18 | 2000-06-06 | Aim Automotive Integrated Manufacturing, Inc. | Wheel alignment apparatus |
| CN104662390A (en) * | 2012-05-16 | 2015-05-27 | 罗伯特·博世有限公司 | Method and system for the automatic optical inspection of the tread pattern of at least one wheel of a vehicle |
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