| 摘要 |
<p>The caterpillar drive device comprises a frame installed on the side of vehicle which carries two principal wheels (38,42) and support wheels (40A,40B,40E) for a caterpillar (12). The frame has a rear part fixed on the chassis carrying one of the principal wheels and a front part in the shape of an oscillating beam (18) carrying the other principal wheel and at least one of the support wheels. The beam is pivoted about a first transverse pivot (20) located at a lower level. There is a suspension arm (52) located above the oscillating beam and connected to it by a rod (64) and pivoted about a second transverse pivot (24) located at an upper level.</p> |
