| 摘要 |
<p>A tree saw includes a frame (20) adapted to be attached to the boom (21) of a prime mover, a tree clamping mechanism on the frame, and a carriage assembly (29) on the frame below the clamping mechanism (25). The carriage assembly includes a generally plate-like chassis, a generally U-shaped bulkhead (34) upstanding from the chassis and providing a recessed base portion and forwardly-extending arm portions, and a slide mechanism on the arm portions. A rail mechanism (28) on the frame receives the slide mechanism (35) for reciprocating movement of the carriage assembly A hydraulic cylinder (36) assembly interconnects the bulkhead and frame for reciprocating the carriage assembly. An annular trim member (30) rotatably mounted on the chassis has a geared inner circumference and a toothed outer circumference projecting forwardly of the base portion. A motor-driven pinion (43,44) mechanism on the chassis engages the rim member inter circumference to rotate the rim member.</p> |
