PROBLEM TO BE SOLVED: To provide, when logging and shipping for lumber production in a forest, a device that scrapes the remaining root in a short time in the form of chips.SOLUTION: A root cutting crusher is produced as an attachment for a small hydraulic shovel. Using the hydraulic pressure of the hydraulic shovel, a 4-blade rotor set at the tip is rotated by a hydraulic motor at a high speed of 1000 to 1300 rpm, and by tracing roots from the side by repeated reciprocation, the roots are scraped into chips in a short time.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】森林で、木材生産のため、伐採搬出をするにあたり、その場に残る伐根を短時間でチップ状に削る装置を提供する。【解決手段】小型油圧ショベルのアタッチメントとして伐根切削破砕機を作成。油圧ショベルの油圧を利用し、油圧モーターによって先端にセットした4枚刃のロータを毎分1000~1300回転で高速回転させ、伐根を側面からなぞるように往復を繰り返し、伐根を短時間でチップ状に削る装置。【選択図】図1