| 摘要 |
A machine-drawn soil processing appliance consisting of at least one rotational body formed of at least one helically lined extended pole (14), that is fixed to an applicable pulling arrangement (12, 22) in such a way that its working width in the longitudinal direction of the axel can be changed. The pole can be designed of springy material and the longitudinal change can be achieved with the help of a pressure-fluid operated mechanism, which operates either directly on the body or indirectly through a link mechanism in the pulling equipment.<IMAGE> |
