| 摘要 |
<p>The agricultural machine according to the invention comprises a frame (1) equipped with means (28) for coupling it to a tractor, a tool (2) composed of a central element (3) and of two lateral elements (4,5) mounted pivotably at the rear of the central element about two axes (6,7) perpendicular to the ground, a single wheel (14) displaceable between an inactive high position, in which it is distant from the ground, and an active low position, in which it bears against the ground, and control means (20) for causing the lateral elements (4,5) to pivot between a working position, in which they extend substantially parallel to the central element (3) when the wheel (14) is in the inactive high position, and a transport position, in which they extend substantially perpendicularly relative to the central element (3) when the wheel (14) is in the active low position. The wheel (14) is mounted rotatably on a structure (15) articulated on the frame (1) about an axis (16) parallel to the central element (3). The control means (20) comprise a jack (21) connecting the structure (15) to the frame (1) and two connecting rods (22,23) connecting the subframes (8,9) of the lateral elements (4,5) to the structure (15). <IMAGE></p> |
