PROBLEM TO BE SOLVED: To provide a tilling claw capable of smoothly switching a moving direction of tilling soil between inside and outside of a ridge.SOLUTION: In tilling claws 20L, 20R, in a state of being attached to a control machine 1, inner curve surfaces 23L, 23R, which curve toward inside of a width direction W of a machine body 10 of the control machine 1 as approaching a tip from sides of fitting base parts 21L, 21R, are formed at inner surfaces of one of driving side parts 22L, 22R among driving side parts 22L, 22R at the time of normal rotation and driving side parts 24L, 24R at the time of reverse rotation. On outside surfaces of the other driving side parts 24L, 24R, outside curve surfaces 25L, 25R are formed so as to curve toward outside of the width direction W of the machine body 10 as approaching the tip from the sides of the fitting base parts 21L, 21R.COPYRIGHT: (C)2015,JPO&INPIT【課題】耕耘土の移動方向を内盛側と外盛側の間で円滑に切り替えることが可能な耕耘爪を提供する。【解決手段】耕耘爪20L・20Rは、管理機1に取り付けられた状態で、正回転時の打込み側部分22L・22R、及び逆回転時の打込み側部分24L・24Rの内の、一方の打込み側部分22L・22Rの内側面には、取付基部21L・21R側から先端に向かうに伴って管理機1の機体10の幅方向W内側に向かうように湾曲する内側湾曲面23L・23Rが形成され、他方の打込み側部分24L・24Rの外側面には、取付基部21L・21R側から先端に向かうに伴って機体10の幅方向W外側に向かうように湾曲する外側湾曲面25L・25Rが形成される。【選択図】図2
