| 摘要 |
A wheelless alignment device (10) for a multiple-wheeled vehicle, wherein each of the wheels (V) bears a portion of the vehicle's weight, has a rigid support member affixable to a wheel hub (H) after its wheel has been removed. The rigid support member (12) bears the portion of the weight of the vehicle normally borne by the removed wheel without substantial deformation, and has at least three reference surfaces (54) that mate with corresponding reference surfaces (56) of a sensor head frame (18). The reference surfaces (54) are in spaced nonlinear relationship to each other. At least one affixation member (14) attaches the head frame (H) to the rigid support member (12) at locations (82) spaced from the registered reference surfaces, so that after registration the spatial relationship between the wheel hub and the sensor head (20) is unchanged by variances in tightening. This arrangement produces greater accuracy in wheel alignment measurement and adjustment.
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