| 摘要 |
<p>A coulter assembly 20 for a seed drill comprises a main frame 22 arranged to couple to an off-road vehicle, an adjustment frame 24 coupled to the main frame by an adjustment mechanism, and a plurality of coulter sub assemblies 26. Each coulter sub assembly being mounted to the main frame for individual movement and is connected to the adjustment frame via a tensioning arrangement 76; wherein movement of the main frame relative to the adjustment frame acts on the tensioning arrangement to vary the tension force. At least one of the sub assemblies may be pivotably mounted with respect to the main frame intermediate a leading and a trailing end in-use. A resilient member such as a spring may extend between the coulter sub-assembly and the adjustment frame.</p> |
