| 摘要 |
Two longitudinal side members 1 of the truck are each of inverted U- section and mount three stationarily- supported casters whereof the middle one 3 is supported at a lower level than the other two in order to serve as rocker for manoeuvrability. Due to this, the frame can be sturdy and support heavy loads, and such trucks can be economically manufactured and steering thereof is facilitated. <IMAGE> |
