| 摘要 |
FIELD: agricultural engineering. ^ SUBSTANCE: rotary harrow has section with working tool formed as multiple-blade disk pivotally put onto shaft. Each subsequent blade is bent to opposite side with respect to previous blade by an angle of 15-25° relative to vertical plane. Disks are arranged in succession, in parallel rows, in staggered arrangement, with one row of blades being arranged in overlapping relation with respect to previous row of blades on frame. Axis of each of the disks is fixed on U-shaped frame and is equipped with pivot joints arranged at its both ends. U-shaped frame of each of the disks is furnished with springs and is mounted on frame of section for displacement in vertical plane for following irregularities on field surface to one-third of maximal tillage depth. Front and rear sides of frame of each section have pivot joints rigidly attached thereto, and each of the sides has one pivot joint rigidly attached thereto and one movable pivot joint. ^ EFFECT: wider operational capabilities of rotary harrow and improved quality of soil tillage. ^ 7 dwg |
