PROBLEM TO BE SOLVED: To provide a tilling claw that makes it hard to cause uneven wear, and thereby extends life and prevents the degradation of tilling performance.SOLUTION: A tilling claw concerning the present disclosure is curved in a direction opposite to a rotation direction of a tilling shaft from a vertical blade part to a horizontal blade part in which the vertical blade part is curved, with respect to the vertical blade part, in one direction of a rotation axis direction of the tilling shaft. The tilling claw is arranged at a position adjacent to a cover body for covering the end in a shaft direction of the tilling shaft. The horizontal blade part is curved in the opposite direction to the cover body in the shaft direction of the tilling shaft. On the cutting edge side of the vertical blade part and the horizontal blade part, a hard alloy part is provided from the vertical blade part to the horizontal blade part. The end on a fixing base side of the hard alloy part is positioned substantially at the same position as the bladed end of the vertical blade part. The end of the tip side of the hard alloy part is positioned in the vicinity of the end of the horizontal blade part. The end on the crest side of the hard alloy part is extended along a crest at a substantially constant distance from the crests of the vertical blade part and the horizontal blade part to the cutting edge side from the end of the fixing base side up to the end of the tip side.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2019,JPO&INPIT【課題】偏摩耗を生じにくくすることで、長寿命化を図ると共に耕耘性能の低下を防止することのできる耕耘爪を提供する。【解決手段】本開示にかかる耕耘爪は、縦刃部から横刃部に渡って耕耘軸の回転方向と逆方向に湾曲させ、縦刃部に対して横刃部が耕耘軸の回転軸方向の一方に湾曲させた耕耘爪であって、耕耘軸の軸方向端部を覆うカバー体に隣接する位置に配置され、横刃部は、耕耘軸の軸方向のうちカバー体とは反対方向に湾曲し、縦刃部及び横刃部の刃縁側には、縦刃部から横刃部に渡って硬質合金部が設けられ、硬質合金部の取付基部側の端部は、縦刃部の刃付け端部と略同じ位置に位置しており、硬質合金部の切っ先側の端部は、横刃部の端部近傍に位置しており、硬質合金部の峰側の端部は、取付基部側の端部から切っ先側の端部に至るまで、縦刃部及び横刃部の峰から刃縁側に略一定の距離をおいて峰に沿って延びている。【選択図】図6
