Method and apparatus for measurement of axle and wheel positions of motor vehicles
First Claim
1. A method for measuring the wheel positions of double-track motor vehicles, the method comprising the steps of:
- detecting the relevant wheel angles, such as the track, the king pin inclination, the inclination of the steering knuckle pivot, the axle pin rake, the eccentricity and the like by means of measuring heads mounted on the wheel rims of the vehicle wheels, each measuring head being pivotable around the extension of the axis of rotation of the respectively related vehicle wheel;
coupling the measuring data of the wheel positions from said detecting step to processing means;
evaluating and displaying the measuring data by the processing means; and
holding the measuring heads in their predetermined measuring positions when the vehicle wheels are rotationally driven by means of a position control.
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Accused Products
Abstract
A method and an apparatus for measuring the wheel positions of double-track motor vehicles according to which the relevant wheel angles, such as the track, the king pin inclination, the inclination of the steering knuckle pivot, the axle pin rake, the eccentricity or the like, are detected by means of measuring heads mounted on the wheel rims of the vehicle wheels. The measurement data is evaluated and displayed by a processing means. The measuring heads are pivotable around an extension of the axis of rotation of the respectively related vehicle wheel. To be able to carry out measurements even with the vehicle wheels rotating, the measuring heads are held in their predetermined measuring position by means of a position control. The measuring heads contain inclinometers and/or electro-optical measuring cells for detecting the measuring data which are suitable for detecting the eccentricity, the axle pin rake, the track difference angle and the like, in addition to detecting the king pin inclination and track angles.
42 Citations
25 Claims
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1. A method for measuring the wheel positions of double-track motor vehicles, the method comprising the steps of:
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detecting the relevant wheel angles, such as the track, the king pin inclination, the inclination of the steering knuckle pivot, the axle pin rake, the eccentricity and the like by means of measuring heads mounted on the wheel rims of the vehicle wheels, each measuring head being pivotable around the extension of the axis of rotation of the respectively related vehicle wheel; coupling the measuring data of the wheel positions from said detecting step to processing means; evaluating and displaying the measuring data by the processing means; and holding the measuring heads in their predetermined measuring positions when the vehicle wheels are rotationally driven by means of a position control. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for measuring the wheel positions of double-track motor vehicles, the apparatus comprising:
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a measuring head for each wheel of the vehicle to provide measuring data therefor; a holding device mounted on each wheel for holding said measuring head pivotable around an extension of the wheel axle, said measuring head being provided with angle sensors for detecting the wheel positions; processing means for the evaluation and display of the measuring data; means for coupling the measuring data to said processing means; and position control means allocated to the measuring head, to maintain the measuring position of said measuring head during the measuring operation with the vehicle wheel rotating. - View Dependent Claims (10, 11, 12, 13, 17, 18, 19)
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14. Apparatus for measuring the wheel position of a double-track motor vehicle, the apparatus comprising:
measuring head pivotable around the axis of rotation of the respective related wheel and mounted on each of the vehicle wheels for detecting the relevant wheel angles, such as the track, the king pin inclination, the inclination of the steering knuckle pivot, the axle pin rake, each said measuring head comprising; inclination sensor means; a position control means; processing means for preparing or processing the measuring heads; a single pivotable inclination sensor comprising first a measuring position for measuring the inclination of the steering knuckle pivot and the axle pin rate, a second measuring position respectively displaced by 180°
for an offset compensation of the previous measuring position; anda motor for pivoting said inclination sensor. - View Dependent Claims (15, 16)
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20. Apparatus for measuring the wheel position of a double-track motor vehicle, said apparatus comprising:
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a measuring head pivotable around the axis of rotation of the respective related wheel and mounted on each vehicle wheel for detecting the relevant wheel angles, such as the track, the king pin inclination, the inclination of the steering knuckle pivot, and the axle pin rake, each said measuring head providing measuring signals and comprising; two electro-optical measuring cells each including a light source, a slit stop spaced from said slit stop and a line sensor; and processing means for the measuring signals; said the slit stop comprising at least two slits in a predetermined local relation for generating at least two corresponding light marks on said line sensor, the position of the light marks corresponding to the track angle and the distance of the two light marks corresponding to the angle of the king pin inclination in a reference system. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification