| 摘要 |
<p>The structure includes an intermediate or rear portion (2), including a platform or floor (4) to which a load-bearing passenger compartment framework (5) is fixed, and an adjacent front portion (3) including a plurality of load-bearing longitudinal members (6, 8, 40) securely fixed to the intermediate or rear portion (2), and to which the drive unit (20) and other functional assemblies or devices (11, 28) are fitted. This front portion (3) includes two lower, essentially coplanar and parallel longitudinal beams or members (6) cantilevered on the intermediate or rear portion (2) substantially at the level of the floor (4), and at least two upper longitudinal beams or members (8, 40) which are also substantially coplanar and essentially parallel to the lower members (6) with which they define an open fronted load-bearing structure whereby the drive unit (20) and any other functional assemblies or devices (11, 28) may be inserted in this structure (6, 8, 40) from the front and arranged in their assembly positions by an essentially translational movement in a direction parallel to the longitudinal members (6, 8, 40); and a front frame (9) releasably fixed to the free ends of the longitudinal members (6, 8, 40) after the drive unit (20) and other functional units and devices (11, 28) have been mounted. <IMAGE></p> |
