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1. (WO2018199833) DEBARKING HARVESTER HEAD OF SINGLE-GRIP TYPE

Pub. No.:    WO/2018/199833    International Application No.:    PCT/SE2018/050397
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 20 01:59:59 CEST 2018
IPC: A01G 23/083
A01G 23/095
Applicants: KOMATSU FOREST AB
Inventors: LINDHOLM, Anders
Title: DEBARKING HARVESTER HEAD OF SINGLE-GRIP TYPE
Abstract:
The invention concerns a debarking harvest harvester head with a pair of feed units (11, 12) that support, one on each side of a trunk feed track (5) with a direction of transport (Z), a first feeder roller (11a.11b) that can be rotated around a centra! axis (11a', 11b') and that is equipped with debarking cutters, grip arms (3a, 3b) on which the feed units (11, 12), are mounted such that the first feeder rollers (11a, 11b) can grip between them a tree trunk (2). For efficient feed of tree trunks, there is, in addition to the said pair of first feeder rollers (11a, 11b), at least one second feeder roller (12a, 12b), whereby the central axes (11a1, 11b') of the two first feeder rollers (11a, 11b) form a force-producing pair that can apply to the tree trunk with a lever (a1, a2), respectively, a turning torque around a central axis of pivot (CL), that the central axis (12a', 12b') of the second feeder rollers (12a, 12b) forms a counteracting force that can act with a lever (b1, b2) to support the tree trunk.