Cultivator blade supporting structure.

摘要

There is provided a cultivator blade supporting structure including at least one cultivator blade (15) having a shank (16) and a blade portion (18), at least one blade holder (30) having a cavity (14) for removably receiving the shank (16) of the cultivator blade (15), and a rotational driving shaft (1) to which the blade holder (30) is fixed, wherein at least a part of the cavity (14) is defined by first confronting oppositely inclined interior surfaces (20,21) and second confronting oppositely inclined interior surfaces (24,25) which have a different inclination angle from the first inclined interior surfaces, so that contact portions (e) of the shank (16) are wedged between and into the first and second inclined interior surfaces when the rotational shaft rotates to cultivate the ground.