The present invention without interfering with the shock relaxation due to the rotation of the centrifugal blade, grass clippings paid mowing is, provide a risk-free mowing machine that wraps around the turning arm and this to support the centrifugal blade to the drive shaft to drive rotation a cover member 3 on which covers the upper side of the pivoting region of a rotary arm 7, made of a lower cover member 4 which is rotated together with the rotary arm 7 is provided so as to cover the lower side of the orbiting region with the winding prevention cover 1. The lower cover member 4, a centrifugal blade 5 and provided so as not to interfere, a plurality of covering the periphery of the drive shaft partially the first shaft covering portion 6a between the outer peripheral portion of the outer peripheral portion and the upper cover member 3 , and a plurality of second shaft covering portion 6b which is provided so as not to interfere with the centrifugal blade 5 behind the centrifugal blade 5 between edges 6c adjacent to each other of the first shaft covering portion 6a.FIELD 2【課題】遠心刃の回動による衝撃緩和を妨げることなく、刈払った刈草が、遠心刃を支持する旋回アームやこれを回転駆動する駆動軸に巻き付く虞のない草刈機を提供する【解決手段】旋回アーム7の旋回領域の上方を覆う上カバー部材3と、該旋回領域の下方を覆うように設けられ旋回アーム7とともに回転される下カバー部材4とからなる巻付防止カバー1を備えた。下カバー部材4は、その外周部と上カバー部材3の外周部との間に遠心刃5と干渉しないように設けられ、駆動軸の周囲を部分的に覆う複数の第1軸カバー部6aと、第1軸カバー部6aの相互に隣接する端縁6c間において遠心刃5の背後に遠心刃5と干渉しないように設けられた複数の第2軸カバー部6bとを含む。【選択図】図2
