| 摘要 |
PROBLEM TO BE SOLVED: To provide a self-traveling flaw detector that easily returns to the original location and can carry it by only one person, when a roll radius is small and scanning forward and rearward is performed. SOLUTION: In order to form the intermediate wheel driving self-traveling flaw detector 1, it has installed at least one front wheel 5, one rear wheel 6, and two motor driving intermediate wheels 4, 4, in which the two motor driving intermediate wheels 4, 4 having magnet tires are arranged generally symmetric with respect to the lateral center CL of a vehicle body. COPYRIGHT: (C)2009,JPO&INPIT
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