Importance

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Abstract

A tree pruning machine having an elevating body detachably mounted to a standing tree and a cutting unit detachably mounted on the body and capable of rotating around the periphery of the body comprising at least three sets of wheel units mounted on the body and capable of moving radially towards and away from the tree, each including a plurality of upper and lower wheels for elevating the body vertically on the tree, an interlocking mechanism for interlocking the wheel units to each other for simultaneously moving the wheel units by the same radial distance, and a pressure equalizing mechanism having springs for biasing the wheels of the respective wheel units equally against the surface of the tree. Thus, even if the tree T varies in diameter, the pruning machine A cuts the branch t at the root while stably and reliably climbing the tree T and automatically descends the tree T when the tree pruning work is finished.

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First Claim