Tree harvesting apparatus with impact hammer

A - Human Necessities – 01 – G

Patent

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Details

A01G 23/09 (2006.01)

Patent

CA 2160327

An apparatus for severing a standing tree at a trunk portion thereof includes a housing constructed and arranged to be movable to a tree harvesting location. Holding structure is constructed and arranged with respect to the housing to hold a portion of the stem of the tree while the trunk portion thereof is severed. A cutting blade mounted so as to be movable between retracted and extended position with respect to the tree. Impact hammer structure is operatively coupled to the cutting blade such that successive impacts generated by the impact hammer structure on the cutting blade move the cutting blade progressively through the trunk portion of the tree. Actuating structure is operatively associated with the cutting blade and constructed and arranged to move the cutting blade between its retracted and extended positions such that when the cutting blade is in an extended position and in engagement with the trunk portion while the holding structure holds the stem of the tree, the successive impacts move the cutting blade to sever the standing tree.

Appareil servant à couper au niveau du tronc des arbres sur pied. L'appareil comprend un boîtier construit et conçu pour être transporté à une zone de coupe d'arbres. Une structure de soutien est construite et conçue, par rapport au boîtier, pour supporter une partie du tronc pendant que l'arbre est coupé. Une lame tranchante est fixée sur l'appareil de manière à se déplacer entre une position rétractée et une position allongée par rapport à l'arbre. Un marteau à percussion est relié à la lame tranchante de manière que des coups de marteau successifs donnés sur la lame déplacent celle-ci dans le tronc de l'arbre. Un dispositif de commande associé à la lame tranchante est construit et conçu pour faire bouger la lame de sa position rétractée à sa position allongée de manière que, lorsque celle-ci se trouve en position allongée et en engagement avec le tronc pendant que la structure de soutien supporte l'arbre, les coups successifs déplacent la lame pour qu'elle coupe l'arbre.

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