| 摘要 |
<p>Plough with multiple shares carrying, in a manner known per se, a plurality of ploughing bodies (5) mounted and regularly spaced on a common support beam (6), body supports (13) each integral with one body and hinged to the beam (6) about vertical axes (10), a coupling member (15) hingedly connected to the body supports (13) to form, together with the beam (6), a deformable parallelogram device, and a tug frame or head (7) mounted at the rear ends of tug arms (8) supported by the body (3) of the tractor (1), characterized in that the beam (6) is carried by the tug head (7) so as to pivot about a first vertical axis (23) fixed with respect to the head, actuating means (36) being provided to vary the angle that describes the beam (6) with the displacement direction V of the tractor (1), the position of said fixed vertical axis (23) being arranged so that a pivoting of the beam (6) about said first fixed axis (23) causes at the same time a variation of the cutting width and an equal transversal displacement of the first body (5) in an appropriate direction.</p> |
