公开(公告)号：EP0011491A1

公开(公告)日：1980-05-28

申请号：EP79302587.5

申请日：1979-11-15

申请人： REPCO LIMITED

发明人： Harant, Gerhart Wilhelm ,  Miller, Keith

IPC分类号： G01B5/255

CPC分类号： G01B7/315 ,  G01B5/255

摘要： The invention relates to a simple method and apparatus for measuring vehicle track alignment (toe-in and toe-out). The vehicle front wheels (10) are each supported on a pair of spaced parallel support rollers (11) and a sensing roller (13) is arranged in contact with the tyre tread surface at the lowermost point of the tyre (12) and normal to the longitudinal axis of the vehicle, that is, normal to the true forward direction of the vehicle. The sensing roller (13) is able to move axially on its axis of rotation (axle) (16). The method comprises rotating each front wheel (10) separately through a limited angular rotation equivalent to a known forward displacement of the vehicle and measuring the axial displacement of the sensing roller (13). The forward displacement and axial displacement figures may then be used to compute toe-in or toe-out and the same procedure may then be performed on the other wheel. The apparatus includes a mounting structure which extends across the width of the vehicle and supports the support rollers on each side. The mounting structure is pivoted between the vehicle wheels such that the apparatus automatically aligns with the apparatus. Means for obtaining a differential reading of axial displacement of the sensing rollers is also disclosed.

公开(公告)号：EP0011492A1

公开(公告)日：1980-05-28

申请号：EP79302588.3

申请日：1979-11-15

申请人： REPCO LIMITED

发明人： Harant, Gerhart Wilhelm

IPC分类号： G01B5/255

CPC分类号： G01B7/315 ,  G01B5/255

摘要： The invention relates to a method and apparatus for dynamically measuring vehicle front end parameters such as tow-in (or toe-out) and camber angle. The apparatus includes a separate pair of support rollers (11) for supporting each vehicle front wheel (10) and causing rotation thereof. A sensing roller (12) is adapted to contact the tyre tread surface at the lowermost point of the tyre so as to be rotated by rotation of the wheel. The axis of the sensing roller (12) is arranged transverse to the plane or rotation of the wheel (10) such that any toe-in or toe-out of the wheel causes a transverse or generally axial displacement of the sensing roller (12) to a - position wherein the axis of the sensing roller is normal to the toe-in or toe-out direction of the wheel (10). The sensing roller (12) is mounted on an axle (13) which forms one bar of a trapezium shaped four bar linkage (13,14,15) which causes said sensing roller (12) to pivot about an effective pivot point ( 1 6) which is arranged, by means of said linkage, a considerable distance away from the wheel (10). The pivot point (16) is the point of intersection of the centre lines of the tapered sides (14) of the linkage since the bars of the linkage are pivotally interconnected. A further sensing roller for measuring camber angle and methods of measuring toe-in and camber angle are also disclosed and claimed.

摘要翻译： 本发明涉及一种用于动态测量车辆前端参数的方法和装置，例如牵引（或脚趾）和外倾角。 该装置包括用于支撑每个车辆前轮（10）并引起其旋转的单独的一对支撑辊（11）。 感测辊（12）适于在轮胎的最低点处接触轮胎胎面表面，以便通过车轮的旋转而旋转。 感测辊（12）的轴线横向于车轮（10）的平面或旋转布置，使得车轮的任何脚趾或脚趾都将导致感测辊（12）的横向或大致轴向位移， 到位于其中感测辊的轴线垂直于车轮（10）的脚趾或脚趾的方向。 感测辊（12）安装在形成梯形四杆连杆（13,14,15）的一个杆的轴（13）上，其使得所述感测辊（12）围绕有效枢转点（16）枢转， 其通过所述联动装置布置成离开所述轮（10）相当远的距离。 枢转点（16）是连杆的锥形侧面（14）的中心线的交点，因为连杆的杆枢转地互连。 还公开并要求保护用于测量外倾角的另外的感测辊以及测量前倾角和外倾角的方法。