PROBLEM TO BE SOLVED: To provide an economical tilling claw having a high tilling performance, being free of vibration factors and having a suppressed tilling torque.SOLUTION: A tilling claw 1 includes a vertical blade part 10 and a horizontal blade part 20 continuously extending from a mounting base 3 that is mounted on a tilling claw shaft 60, where the claw is curved in an area from the vertical blade part 10 towards the horizontal blade part 20 in an opposite direction to a rotation direction, and the horizontal blade part 20 is curved to one side with respect to the vertical blade part 10. The vertical blade part 10 is inclined to one side with respect to the mounting base 3. A cross-sectional shape of the tip of the horizontal blade part 20 is protrudingly curved at the width-direction whole body in a direction same as the curved inside direction of the curve of the horizontal blade part 20 that is curved in one side, and is curved from a blade edge side towards a back edge side of the horizontal blade part 20 with a substantially fixed curvature radius.COPYRIGHT: (C)2015,JPO&INPIT【課題】耕耘性能が高く、振動要因が取り除かれ、耕耘トルクが抑えられて経済的な耕耘爪を提供する。【解決手段】耕耘爪1は、耕耘爪軸60に取り付けられる取付基部3から連続して延びる縦刃部10及び横刃部20を有し、縦刃部10から横刃部20にかけて回転方向と逆向きに弯曲するとともに、横刃部20が縦刃部10に対して一方側に弯曲する。縦刃部10は取付基部3に対して一側方に傾斜する。横刃部20の先端部の断面形状は、一側方に弯曲する横刃部20の弯曲の弯曲内側方向と同方向側に幅方向の全体が凸状に弯曲し、横刃部20の刃縁側から峰縁側にかけて略一定の曲率半径で弯曲している。【選択図】図1
