| 摘要 |
PROBLEM TO BE SOLVED: To provide a tire tread surface state measurement device and a measurement method capable of exactly and quickly measuring a ground-contact shape and load distribution at traveling of a vehicle in detail in the ground-contact state of the tire closing to the traveling state of an actual road surface even at high speed traveling and wetting. SOLUTION: In the tire tread surface state measurement device 1A for measuring the ground-contact shape and the ground-contact force of the tire 10, a load detector 21 is constituted using an integral piezoelectric element type load cell 11a. The load detection band area 20 is constituted such that an apex surface becomes the same height as a surface 11f of a measurement road surface 11 and regarding the crossing direction of the measurement road surface 11, they are aligned and buried in a broader range than ground-contact width B1 of the stopped tire 10. Projection detectors 30 are arranged at the outside of both ends and a speed measurement device 40 for measuring traveling speed V of the tire 10 and a measurement value record device 50 for recording the measurement value in time series are provided. COPYRIGHT: (C)2005,JPO&NCIPI
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