TESTING DEVICE OF TEST FOR PASSING WHEEL WITH RIM OR TIRE ON OBSTACLE

Japanese Patent JP3808959

B

PROBLEM TO BE SOLVED: To analyze the characteristic mode of a tire within a frequency range of 0Hz and 130Hz.
SOLUTION: A testing device of a test for passing a wheel 2 with a tire 4 on an obstacle has a road surface wheel 1 for supporting a protruding part 100, a steering knuclde 6 for supporting a hub 5 and the wheel 2 so that they can be rotated, and two suspension arms 8 and 9 for supporting the steering knuckle 6. Also, the testing device has third and fourth leaf springs 10, 11, 12, and 13 which are connected to the suspension arms 8 and 9 and a support frame 15, a fifth leaf spring 14 which is connected to the steering knuckle 6 and the support frame 15, and an air spring 40 which is engaged to the steering knuckle 6 and the support frame 15. First and second acceleration transducer means 48 and 49 which are related to a hub 5 provide the measurement values of natural frequency and amount of vibration control of the tire 4 in radius and longitudinal directions. The testing device can be used in both hub movable mode and hub fixed mode.

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Carlo, Bernardo DI.
Mancosu, Federico
Giuseppe, Matrascia

JP1996000310865

May 26, 2006

November 21, 1996

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Pirelli, Coordinamento Pneumatici Spa

G01M17/02; B60C19/00; G01M7/08; G01M17/02; B60C19/00; G01M7/00; (IPC1-7): G01M17/02; B60C19/00

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