PROBLEM TO BE SOLVED: To easily detach and mount a plurality of cutting blades to attain quick cutting blade replacement work by detaching/mounting the cutting blade from/to a holder to perform cutting blade replacement work without carrying out detachment/mounting between the holder and a mounting part on the driving shaft side when replacing the cutting blade with a new cutting blade due to the damage and wear of the cutting blade.SOLUTION: A cutting blade part 3 includes the holder 4 rotatably fitted in a swingable manner to the mounting part 2, and the cutting blades 5 for cutting trees and plants, and the holder and the cutting blades are provided to be freely inserted and detached in the direction of a rotation axis O of the driving shaft 1 by an inserting/detaching mechanism 6.COPYRIGHT: (C)2013,JPO&INPIT【課題】例えば、刈刃の破損や損耗が生じ、新たな刈刃に交換する場合において、駆動軸側の取付部とホルダとの取外しや取付けをせずに、ホルダに対して刈刃を取外し、取付けることにより刈刃の交換作業を行うことができ、複数個の刈刃を容易に取外したり、取付けることができ、刈刃の交換作業を迅速に行うことができる。【解決手段】刈刃部3は取付部2に揺動自在に軸着されるホルダ4及び草木類を切断する刈刃5からなり、ホルダと刈刃とは挿脱機構6により駆動軸1の回転軸線O方向に挿脱自在に設けられている。【選択図】図1
