| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent traveling wheels for a track from being lifted up from rails during traveling. <P>SOLUTION: A traveling vehicle includes: a slip determination means 90 which determines whether or not a pair of on-road traveling tires 4, 4 made to contact with rails is slipping; and a wheel weight control means 90, which controls wheel weight to reduce the wheel weight of a pair of on-track traveling wheels 6, 6 adjacent to a pair of the on-road traveling tires made to contact the rails, setting a predetermined lower limit value as a limit, when the slip determination means determines the slip of them, and to increase the wheel weight of a pair of the on-track traveling wheels when it is determined that they are not slipping. A hydraulic circuit 100 is structured to have an accumulator 137 for preventing the drop of pressure of the hydraulic cylinders, which is provided in a hydraulic passage that imparts a wheel-lowering pressure to hydraulic cylinders 8, 8 that controls the wheel weight of a pair of the on-track traveling wheels and capable of accumulating hydraulic oil inside at pressure equal to or less than a pressure corresponding to the lower limit value of the wheel weight. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
