| 摘要 |
A device for cutting down tree stems. It has a wheeled frame defining a central aperture into which a chassis is mounted for oscillating movement, at one end, about an axis transverse to the frame, a pair of hydraulic jacks at the other end of the frame being connected to the chassis to oscillate it. A carrier is mounted on the chassis to be moved reciprocally longitudinally on riding tracks provided alongside the chassis, the carrier being displaceable by means of hydraulic jacks. The said carrier has a pair of rotary disks extending beneath the chassis and rotatable in opposite directions about parallel axes extending longitudinally of the chassis. These disks have forwardly projecting cutters whereby they may be set behind a stump and brought into rotation, and said carrier may be moved forwardly toward and into the stump to nibble at it and cut it down. |
