PROBLEM TO BE SOLVED: To provide an attaching/detaching structure of flail pawls, the structure that facilitates replacement of the flail pawls to a bracket.SOLUTION: An attaching/detaching structure of flail pawls is characterized as follows: a pin 5 for mounting the flail pawls 4 to a bracket 3 of a rotary drum 2 is cylindrical and has a small diameter shaft part 51 in the center one end of large diameter shaft parts 52, 52 of both ends of the small diameter shaft part 51 has a head 53 of the diameter larger than that of the large diameter shaft part 52 both bearing parts 31, 31 of the bracket 3 have a first through-hole 32 for inserting both large diameter shaft parts 52, 52 of the pin 5 and a base with two flail pawls 4, 4 overlaid thereon has large diameter hole parts 91, 91 capable of inserting both large diameter shaft parts 52, 52 of the pin 5 and a keyhole-shaped second through-hole 9 comprising small diameter slits 92, 92 extended from the large diameter hole parts 91, 91 toward the base direction of the flail pawls 4, 4.SELECTED DRAWING: Figure 9COPYRIGHT: (C)2018,JPO&INPIT【課題】 ブラケットに対するフレール爪の交換を容易に行えるフレール爪の着脱構造の提供。【解決手段】 回転ドラム2のブラケット3にフレール爪4を取り付けるピン5は、円柱状でその中央に小径軸部51を有し、該小径軸部51の両端の大径軸部52、52の一端には大径軸部52より大径の頭部53を有し、ブラケット3の両軸受け部31、31にはピン5の両大径軸部52、52を挿通する第1貫通孔32を有し、2枚のフレール爪4、4の重ねた基部にはピン5の両大径軸部52、52を挿通可能な大径孔部91、91と、該大径孔部91、91からフレール爪4、4の基部方向へ向けて延設された小径スリット部92、92からなる鍵穴状の第2貫通孔9を有する構成。【選択図】 図9
