| 摘要 |
<p>A track unit (1) for moving a ground work vehicle, comprising two elastic elements (13,14) proximate to the front and rear ends, interposed between a monolithic upper portion (2,3) of the structure that supports the driving wheel and a monolithic lower portion (6) that supports two pairs of coaxial guiding wheels (7a,7b,8a,8b) with parallel axles and resting rollers, means adapted to ensure a coplanar arrangement of the upper (2,3) and lower portions (6) of the structure being also provided.</p> |
