PROBLEM TO BE SOLVED: To provide a cutting blade mounting structure of flail mower, which hardly causes defects in rotation of cutting blades.SOLUTION: The cutting blade mounting structure of flail mower to a bracket 90 mounted on a rotary drum 50 is provided. The bracket 90 has a pair of support pieces 91 and 92 opposing each other at a distance larger than the thickness of the cutting blades 70. The pair of the support pieces 91 and 92 are equipped with hole parts 91a and 92a at positions opposing the support pieces. The cutting blades 70 have a through-hole 70a and are connected to the bracket 90 by inserting a bolt 40 into the through-hole 70a and the hole parts 91a and 92a inside of the pair of the support pieces 91 and 92. A cylindrical member 43 is arranged between the inner circumference of the through-hole 70a and the outer circumference of the bolt 40. Length of the cylindrical member 43 is larger than a distance between outside surfaces of the pair of the support pieces 91 and 92 and the outer diameter of the cylindrical member 43 is smaller than the hole parts 91a and 92a in a section of length larger than at least a distance of the outside surfaces of the pair of the support pieces 91 and 92.COPYRIGHT: (C)2011,JPO&INPIT【課題】刈刃の回動において不具合が生じ難いフレールモーアの刈刃取付構造を供する。【解決手段】回転ドラム50に設けられたブラケット90に対するフレールモーアの刈刃取付構造であって、ブラケット90は、刈刃70の厚みより大きな間隔をもって対向する一対の支持片91,92を有し、一対の支持片91,92にはそれぞれ対向する位置に孔部91a,92aが設けられ、刈刃70は、貫通孔70aを有し、一対の支持片91,92の内側において貫通孔70aと孔部91a,92aとにボルト40が挿通されることによってブラケット90に連結され、貫通孔70aの内周とボルト40の外周との間には筒状部材43が設けられ、筒状部材43の長さは、一対の支持片91,92の外側面の間隔より大であり、筒状部材43の外径は、少なくとも一対の支持片91,92の外側面の間隔より大きい長さの区間において孔部91a,92aより小であること。【選択図】図2
