| 摘要 |
<p>An agricultural soil trench opening machine includes at least one opener/closer arrangement carried by a tool bar. Each opener/closer arrangement includes an opener disc positioned at an angle relative to a working direction and defining a trench profile. The opener disc has an axis of rotation and leading and trailing edges positioned adjacent one side of the trench profile. A gauge wheel is, generally, adjacent to the trailing edge of and inline with the opener disc. The gauge wheel has a leading edge positioned between opener disc leading and trailing edges. A first closing wheel is positioned on a side of the trench profile opposite to the gauge wheel. The first closing wheel has a leading edge positioned between the axis of rotation and the trailing edge of the opener disc. A second closing wheel is positioned on a same side of the trench profile as the gauge wheel.</p> |
