| 摘要 |
An auxiliary unit for at least lopping felled trees, and preferably, but not necessarily of the type which is intended for mounting on the three-point lifting means of a tractor, and obtaining necessary driving power from the tractor, said unit including a lopping means (31) and at least two feed wheels (12, 19), of which at least one is driven for feeding a tree inserted between the wheels through the unit for lopping. To improve the capacity of such a unit, the feed wheels (12, 19) of the unit are arranged freely in a single vertical plane at the base structure (5) of the unit and at a carrying arm (16), which is compulsorily pivotable about an axis parallel to the rotational axis of the wheels and relative to the structure (5), such as to take its wheel (19) to and from engagement against a tree fed in between the wheels (12, 19). |
