CN101469980A - Method and device for detecting movement track of automotive tire - Google Patents
Method and device for detecting movement track of automotive tire Download PDFInfo
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- CN101469980A CN101469980A CNA2007101736440A CN200710173644A CN101469980A CN 101469980 A CN101469980 A CN 101469980A CN A2007101736440 A CNA2007101736440 A CN A2007101736440A CN 200710173644 A CN200710173644 A CN 200710173644A CN 101469980 A CN101469980 A CN 101469980A
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Abstract
The invention relates to an automobile tire motion track test method, comprising fixedly connecting three laser indicators vertical and crossed with each other to the outer end face of a tire; projecting laser beams to three projection screens vertical to each other; driving the vehicle forward; using cameras to record the positions of the laser beams on the projection screens vertical to each other; according to the positions of the three laser beams on the projection screens, calculating main pin trim angle, main pin leaning angle, front wheel lateral obliquity angle and front wheel front beam. A device realizing the method is composed of a connecting base, three cameras and three projection plates, wherein the three projection plates are respectively arranged on the laser projection directions of the three laser indicators and are vertical and crossed with each other, the three cameras are respectively arranged at the front of the projection plates. The invention utilizes three laser indictors and three projection plates to display the motion state of automobile tires in space rectangular coordinates, to accurately reflect the grounding deviation of tires, having simple structure and operation.
Description
Technical field:
The present invention relates to mechanical field, relate in particular to vehicle, particularly a kind of movement track of automotive tire detection method and device.
Background technology:
After date when automobile uses one section, deviation may take place in the locator value of the kingpin castor angle of wheel, kingpin inclination, front-wheel camber and toe-in of front wheel, causes the phenomenon of hard steering, automobile sideslip, tire irregular wear, influences automotive performance and safety.In the prior art, the device that detects wheel alignment needs to test behind the lifting automobile, still, after the automobile lifting, wheel is not subjected to vehicle body pressure, can't accurately reflect the deviation situation when wheel lands, simultaneously, pick-up unit complex structure of the prior art is huge, and test is inconvenient.
Summary of the invention:
The purpose of this invention is to provide a kind of movement track of automotive tire detection method, described this movement track of automotive tire detection system will solve in the prior art wheel alignment pick-up unit can't reflect accurately that deviation situation when wheel lands, complex structure are huge, the technical matters that test is inconvenient.
This movement track of automotive tire detection method of the present invention comprises the process of a record movement track of automotive tire, wherein, in the process of described record movement track of automotive tire, fixedly connected three laser designator on the end face of the outside of doughnut, the laser projections direction of adjusting described three laser designator is to vertical and crossing mutually, utilize on described three laser designator projecting laser bundle to three orthogonal projection screens, propelling vehicle advances or retreats, utilize the position of the laser beam on three orthogonal projection screens of video camera record simultaneously, at last, adopt mathematical method to calculate the kingpin castor angle of wheel according to the position of three laser beam on projection screen, kingpin inclination, front-wheel camber and toe-in of front wheel.
Further, after doughnut lands rotation 180 degree, suspend camera record, utilize machinery with after the automobile local elevation, with unsettled 180 degree that rotate again of tire, then, camera record is recovered in the tire back that lands, the continuation propelling vehicle advances or retreats, and doughnut is landed rotate 180 degree again.
The present invention also provides a kind of device of realizing above-mentioned movement track of automotive tire detection method, described this movement track of automotive tire pick-up unit is by a Connection Block, three video cameras and three projection plates constitute, wherein, be provided with three laser designator in the described Connection Block, the laser projections direction of described three laser designator is vertical mutually and crossing, described three projection plates are separately positioned on the laser projections direction of three laser designator, three projection plates are vertical mutually and crossing, and described three video cameras are arranged on the place ahead of described projection plate separately.
Further again, an end of described Connection Block is provided with extension arm, and an end of described extension arm is provided with scroll chuck or permanent magnet.
Further, be provided with the length scale on any one described projection plate.
Principle of work of the present invention is: utilize Connection Block will indicate the laser designator of 3 d-line to be connected with the surfaces of revolution of doughnut, utilize camera record X to, Y to Z to projection plate on laser spot position, adopt conventional mathematics, method of geometry to calculate kingpin castor angle, kingpin inclination, front-wheel camber and the toe-in of front wheel of wheel again.
Concrete, being used to described in the present invention calculates mathematics, the method for geometry of kingpin castor angle, kingpin inclination, front-wheel camber and the toe-in of front wheel of wheel, and those skilled in the art all understands, and does not repeat them here.
The present invention and prior art contrast, and its effect is actively with tangible.The present invention utilizes three laser designator and three projection plates display automobile tire motion state in rectangular coordinate system in space, utilize camera record tire motion track, utilize mathematics, method of geometry to calculate kingpin castor angle, kingpin inclination, front-wheel camber and the toe-in of front wheel of wheel, can accurately reflect deviation situation when wheel lands, simple in structure, easy to operate.
Description of drawings:
Fig. 1 is the work synoptic diagram of the movement track of automotive tire pick-up unit among the present invention.
Fig. 2 is the Connection Block in the movement track of automotive tire pick-up unit among the present invention and the structural representation of laser designator.
Fig. 3 is that the projection plate in the movement track of automotive tire pick-up unit among the present invention and the position of video camera concern synoptic diagram.
Embodiment:
As Fig. 1, Fig. 2 and shown in Figure 3, movement track of automotive tire detection method of the present invention comprises the process of a record movement track of automotive tire, wherein, in the process of described record movement track of automotive tire, fixedly connected three laser designator 1 on the end face of the outside of doughnut, the laser projections direction of adjusting described three laser designator 1 is to vertical and crossing mutually, utilize on described three laser designator, 1 projecting laser bundle to the three orthogonal projection screen, propelling vehicle advances or retreats, utilize the position of the laser beam on three orthogonal projection screens of video camera 2 records simultaneously, at last, adopt mathematical method to calculate the kingpin castor angle of wheel according to the position of three laser beam on projection screen, kingpin inclination, front-wheel camber and toe-in of front wheel.
Further, after doughnut lands rotation 180 degree, suspend video camera 2 records, utilize machinery with after the automobile local elevation, with unsettled 180 degree that rotate again of tire, then, video camera 2 records are recovered in the tire back that lands, the continuation propelling vehicle advances or retreats, and doughnut is landed rotate 180 degree again.
The present invention also provides a kind of device of realizing above-mentioned movement track of automotive tire detection method, described this movement track of automotive tire pick-up unit is by a Connection Block 3, three video cameras 2 and three projection plates 4 constitute, wherein, be provided with three laser designator 1 in the described Connection Block 3, the laser projections direction of described three laser designator 1 is vertical mutually and crossing, described three projection plates 4 are separately positioned on the laser projections direction of three laser designator 1, three projection plates 4 are vertical mutually and crossing, and described three video cameras 2 are arranged on the place ahead of described projection plate 4 separately.
Further again, an end of described Connection Block 3 is provided with extension arm 5, and an end of described extension arm 5 is provided with scroll chuck or permanent magnet 6.
Further, be provided with the length scale on any one described projection plate 4.
Claims (5)
1. movement track of automotive tire detection method, the process that comprises a record movement track of automotive tire, it is characterized in that: in the process of described record movement track of automotive tire, fixedly connected three laser designator on the end face of the outside of doughnut, the laser projections direction of adjusting described three laser designator is to vertical and crossing mutually, utilize on described three laser designator projecting laser bundle to three orthogonal projection screens, propelling vehicle advances or retreats, utilize the position of the laser beam on three orthogonal projection screens of video camera record simultaneously, at last, adopt mathematical method to calculate the kingpin castor angle of wheel according to the position of three laser beam on projection screen, kingpin inclination, front-wheel camber and toe-in of front wheel.
2. movement track of automotive tire detection method as claimed in claim 1, it is characterized in that: after doughnut lands rotation 180 degree, suspend camera record, utilize machinery with after the automobile local elevation, with unsettled 180 degree that rotate again of tire, then, camera record is recovered in the tire back that lands, the continuation propelling vehicle advances or retreats, and doughnut is landed rotate 180 degree again.
3. device of realizing movement track of automotive tire detection method as claimed in claim 1, constitute by a Connection Block, three video cameras and three projection plates, it is characterized in that: be provided with three laser designator in the described Connection Block, the laser projections direction of described three laser designator is vertical mutually and crossing, described three projection plates are separately positioned on the laser projections direction of three laser designator, three projection plates are vertical mutually and crossing, and described three video cameras are arranged on the place ahead of described projection plate separately.
4. movement track of automotive tire pick-up unit as claimed in claim 3 is characterized in that: an end of described Connection Block is provided with extension arm, and an end of described extension arm is provided with scroll chuck or permanent magnet.
5. movement track of automotive tire detection system as claimed in claim 4 is characterized in that: be provided with the length scale on any one described projection plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101736440A CN101469980A (en) | 2007-12-28 | 2007-12-28 | Method and device for detecting movement track of automotive tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101736440A CN101469980A (en) | 2007-12-28 | 2007-12-28 | Method and device for detecting movement track of automotive tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101469980A true CN101469980A (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101736440A Pending CN101469980A (en) | 2007-12-28 | 2007-12-28 | Method and device for detecting movement track of automotive tire |
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| CN (1) | CN101469980A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357752A (en) * | 2011-09-07 | 2012-02-22 | 青岛利东机械有限公司 | Laser measuring device for workpiece angle of numerical control cutting machine |
| CN105403174A (en) * | 2015-12-10 | 2016-03-16 | 万向钱潮股份有限公司 | Testing mechanism used for testing main pin positioning angle during dynamic driving of vehicle |
| CN106370093A (en) * | 2016-10-31 | 2017-02-01 | 吉林大学 | Vehicle wheel posture detection system based on fixed identifier |
| CN109708901A (en) * | 2019-01-21 | 2019-05-03 | 刘波 | Automobile steering roller locating and detecting device |
| CN111473763A (en) * | 2020-04-22 | 2020-07-31 | 安徽江淮汽车集团股份有限公司 | Steering wheel adjustment angle detection device and method |
| CN111623728A (en) * | 2020-06-18 | 2020-09-04 | 北京三快在线科技有限公司 | Device and method for measuring rotation angle |
| CN114061920A (en) * | 2020-08-07 | 2022-02-18 | 北京小米移动软件有限公司 | Folding track detection device, folding track detection method and folding detection system |
| CN117664846A (en) * | 2023-11-17 | 2024-03-08 | 暨南大学 | Rolling type friction meter for road surface anti-skid performance |
-
2007
- 2007-12-28 CN CNA2007101736440A patent/CN101469980A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357752A (en) * | 2011-09-07 | 2012-02-22 | 青岛利东机械有限公司 | Laser measuring device for workpiece angle of numerical control cutting machine |
| CN105403174A (en) * | 2015-12-10 | 2016-03-16 | 万向钱潮股份有限公司 | Testing mechanism used for testing main pin positioning angle during dynamic driving of vehicle |
| CN106370093A (en) * | 2016-10-31 | 2017-02-01 | 吉林大学 | Vehicle wheel posture detection system based on fixed identifier |
| CN109708901A (en) * | 2019-01-21 | 2019-05-03 | 刘波 | Automobile steering roller locating and detecting device |
| CN111473763A (en) * | 2020-04-22 | 2020-07-31 | 安徽江淮汽车集团股份有限公司 | Steering wheel adjustment angle detection device and method |
| CN111473763B (en) * | 2020-04-22 | 2021-05-07 | 安徽江淮汽车集团股份有限公司 | Steering wheel adjustment angle detection device and method |
| CN111623728A (en) * | 2020-06-18 | 2020-09-04 | 北京三快在线科技有限公司 | Device and method for measuring rotation angle |
| CN114061920A (en) * | 2020-08-07 | 2022-02-18 | 北京小米移动软件有限公司 | Folding track detection device, folding track detection method and folding detection system |
| CN117664846A (en) * | 2023-11-17 | 2024-03-08 | 暨南大学 | Rolling type friction meter for road surface anti-skid performance |
| CN117664846B (en) * | 2023-11-17 | 2024-06-04 | 暨南大学 | Rolling type friction meter for road surface anti-skid performance |
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Open date: 20090701 |