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Cut-to-Length Harvester head for multi tree processing

IP.com Disclosure Number: IPCOM000237816D
Publication Date: 2014-Jul-15
Document File: 1 page(s) / 14K

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The IP.com Prior Art Database

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P21984: IP.COM

Abstract

There is a new requirement for forestry machines to process more than one tree at a time. For this to work, the operator needs to select similar already harvested trees from the ground and hold an individual tree in the head while another is selected. Many tree harvester heads have lower knives fitted. These knives are normally used to either remove limbs from the tree or add stability to the tree while crosscutting and falling. Currently, a forestry machine operator has to either hold the trees with the delimb knifes or with the drive rollers of the head while trying to select another stem. This design requires considerable skill from the operator because he has to clamp the tree to retain it in the head (normally with the drive rollers) then allow the knives to open to collect the additional tree while not dropping the log. To do this he has to flick the drive arms open at the exact moment the tree gets near the rollers The issue with the current configuration is that the operator has to open the knives and/or rollers to pick up the tree while simultaneously holding a tree in the head This solution solves this problem by having one or more flicking accumulator knives holding the tree in the head while maintaining the ability to open the delimb knives to pick up another tree The accumulator arm allows the single previously tree to be held while the operator uses the delimb knives to select and pick up another tree. The accumulator arm would use a similar knife design to a disk saw felling head that allows multiple trees to be selected and the accumulator arms flick open past the trees while clamped with the other knife set, thus not trapping the knives below a selected tree The solution allows the operator of a harvester head to select an individual tree from a pile of felled trees and with the accumulator arm, hold the tree within the head and use the delimb knives to pick up a second tree. This solution is open for automation.

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Cut-to-Length Harvester head for multi tree processing

There is a new requirement for forestry machines to process more than one tree at a time. For this to work, the operator needs to select similar already harvested trees from the ground and hold an individual tree in the head while another is selected.

Many tree harvester heads have lower knives fitted. These knives are normally used to either remove limbs from the tree or add stability to the tree while crosscutting and falling.

Currently, a forestry machine operator has to either hold the trees with the  delimb knifes or with the drive rollers of the head while trying to select another stem. This design requires considerable skill from the operator because he has to clamp the tree to retain it in the head (normally with the drive rollers) then allow the knives to open to collect the additional tree while not dropping the log. To do this he has to flick the drive arms open at the exact moment the tree gets near the rollers

The issue with the current configuration is that the operator has to open the knives and/or rollers to pick up the tree while simultaneously holding a tree in the head

This solution solves this problem by having one or more flicking accumulator knives holding the tree in the head while maintaining the ability to open the delimb knives to pick up another tree

The accumulator arm allows the single previously tree to be held while the operator uses the delimb knives to select and pick up another tree. Th...