| 摘要 |
<p>A row unit (1) to be attached to a transverse bar (2) of an agricultural implement (20) comprises a tool part (3) having at least one soil working part, and a biasing device (4) for biasing the tool part (3) against the ground, the biasing device comprising a spring means (5) arranged between a first abutment (6), which is fixed relative to the transverse bar (2), and a second abutment (7), which is movable relative to the transverse bar (2), and a link arrangement (13) adapted to be connected between the transverse bar (2) and the tool part (3), the link arrangement (13) extending substantially in the direction of travel of the row unit and the movable abutment (7) being attached to said link arrangement (13), the link arrangement (13) comprising an upper link element (14) and a lower link element (15), which are adapted to move parallel to each other, wherein the spring means (5) comprises a torsion bar (8) whose main extension is substantially parallel to the ground.</p> |
