| 摘要 |
The invention concerns a multi-ploughshare (5) plough (1) with variable working width, comprising at least a support beam (2, 3) for angularly mobile ploughshares (5) and ploughshares (5) consisting respectively of a plough beam (6) linked via a leg of a plough (7) to the working parts (8) including at least a frog (9) and a landside (10). The plough is characterised in that the ploughshares (5) are mounted freely pivoting between two extreme working width positions relative to the support beam (2, 3) via a pivot pin (14), the leading edge (17) of the working parts (8) of the ploughshare (5) being located substantially downstream of said pivot pin (14) such that the landside (10) of the ploughshare (5) in working position is self-aligned along a line parallel to the traction line (T) when the plough moves forward. |
