| 摘要 |
PROBLEM TO BE SOLVED: To provide a tillage pawl structure and tillage pawl shape enabling smooth tilling work even if pebbles and the like are mixed in soil, and enabling various adjustment of a soil-digging width.SOLUTION: An attachment 30 of a tillage pawl structure 20 has a sleeve 32 mounted to a tilling shaft 17 of a tiller 10 in a relatively unrotatable and detachable manner, and brackets 33A and 33B fastened to the sleeve at axial-direction intervals. Tillage pawls 40 are mounted detachably to a plurality of holders 31 extending radially from a rotation center O, respectively. In the tillage pawl, an intermediate part 42 is formed at an angle α on one surface side from a base end part 41 which has an insertion part 411 mounted detachably to the holder, and a tip end part 43 is formed at an angle &bgr; on the other surface side from the intermediate part. An outer edge of the tip end part is located on a circular arc of a virtual circumscribed circle D having a predetermined radius from the rotation center O. A scoop 46 formed of the intermediate part and the tip end part enters soil to dig up the soil. |
