초록 ▼

A tree harvester head having a mounting bracket at the back of the type allowing the head to be tilted. The bracket is used to mount the head on the boom of a mobile vehicle. Cooperating mounting members are provided on the head and bracket for rotatably mounting the head on the bracket. Rotating me

A tree harvester head having a mounting bracket at the back of the type allowing the head to be tilted. The bracket is used to mount the head on the boom of a mobile vehicle. Cooperating mounting members are provided on the head and bracket for rotatably mounting the head on the bracket. Rotating members are provided on the head and bracket for rotating the head relative to the bracket. Hydraulic drive elements are provided on the head for operating the rotating member on the head to rotate the head. A method for cutting trees using the harvester head involves the steps of cutting trees in three adjacent rows or swaths and laying all the cut trees in or adjacent the central swath, with their butt ends all facing in the same direction, for pickup by a forwarder.

대표청구항 ▼

[ I claim:] [1.] A tree harvester head of the type having a central post, a cutting device at the bottom of the post, and tree grapple means on the post above the cutting device, the cutting device having bracket means at the back of the post for use in connecting the head to a boom on a mobile vehi

[ I claim:] [1.] A tree harvester head of the type having a central post, a cutting device at the bottom of the post, and tree grapple means on the post above the cutting device, the cutting device having bracket means at the back of the post for use in connecting the head to a boom on a mobile vehicle for pivotal movement in a plane generally aligned with the boom, the bracket means rotatably connected to the boom by mounting means allowing the post to rotate in a plane transverse to the boom, rotating means for rotating the post about an axis extending through the mounting means and perpendicular to the transverse plane of the post, and drive means carried on the post for operating the rotating means, the rotating means including a pair of rotatable drive gears mounted on the back of the post and a fixed gear carried by the bracket means coaxial with the axis of the mounting means, each of the drive gears being rotatable about an axis parallel to the axis extending through the mounting means and being in drive relationship with the fixed gear, and the drive means selectively rotating the drive gears whereby the harvester head can be rotated in the transverse plane.