| 摘要 |
A tire testing device which is constructed to compensate for the elastic deformation that occurs in the structural components supporting a test tire when the test tire is loaded against a roadwheel. The present construction also prevents mechanical resonances in the tire load frame during high frequency testing which permits undistorted measurements of higher harmonic force variation from the tire. The test tire is mounted to a rotatable spindle within a housing for selective engagement with a roadwheel. The housing is supported and maneuvered by a plurality of vertical and horizontal members, each member including universal joints at its opposite ends. The horizontal members are arranged in a trapezoidal or nonparallel configuration such that a small acute angle is formed between the outer surface of the test tire and the outer surface of the roadwheel when the test tire is drawn against the roadwheel. The nonparallel configuration of the support members provides more precamber with large, heavily loaded tires and less precamber for small, lightly loaded tires to compensate for the variations in elastic deformation.
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