| 摘要 |
<p>An automatic lopping machine comprises a main body including a drive unit, a chain saw and a plurality of drive wheels each rotatable in a plane inclined relative to the trunk of a standing tree, and an auxiliary unit including a plurality of idle wheels and adapted to be connected together with the main body so as to encircle the tree trunk. The drive unit is used to drive the chain saw and also the drive wheels when and so long as the machine revolves helically around the tree trunk so as to ascend the tree trunk.</p> |
