To accurately determine the presence or absence of circumferential uneven wear in a circumferential uneven wear determination method and device for a pneumatic tire.SOLUTION: A circumferential uneven wear determination method for a pneumatic tire comprises: rotating a new tire 1 at a predetermined rotational speed to measure force of pattern vibration as reference force; rotating a to-be-measured tire 1 at the predetermined rotational speed to measure force of a pattern vibration as measurement force; and in a case where the pattern vibration regularly occurs an N (N is a natural number) number of times per rotation of the tire 1, when the measurement force is greater than the reference force by predetermined force at a predetermined frequency that is a value obtained by multiplying the predetermined rotational speed by the N number of times, determining that a circumferential uneven wear has arisen.SELECTED DRAWING: Figure 1
【課題】空気入りタイヤの周方向偏摩耗の判定方法および装置において、正確に周方向偏摩耗の発生の有無を判定する。【解決手段】空気入りタイヤの周方向偏摩耗の判定方法は、新品時のタイヤ1を所定回転数で転動させてパターン振動の力を基準力として測定し、測定対象となるタイヤ1を上記所定回転数で転動させてパターン振動の力を測定力として測定し、パターン振動がタイヤ1の1回転当たりに規則的にN回生じるとき(Nは自然数)、上記所定回転数に上記N回を乗じた値である特定周波数において、測定力が基準力よりも所定以上大きければ周方向偏摩耗が発生していると判定する。【選択図】図1
CIRCUMFERENTIAL UNEVEN WEAR DETERMINATION METHOD AND DEVICE FOR PNEUMATIC TIRE
空気入りタイヤの周方向偏摩耗の判定方法および装置
2020-03-05
Patent
Electronic Resource
Japanese
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