On the Displacement of Soil by the Tillage Machines (IV)

On the Soil Displacement in the Direction of Travel

Abstract

The condition of soil displacement changes by the type of tillage machines, the kind of tines, tillage depth and the condition of the field. In the soil displacement, there are horizontal displacement and vertical displacement. The authors investigated the horizontal (direction of travel) displacement of soil using the tillage machines. The results of the investigation are summarized as follows:
(1) The distance of soil displacement is determined by the rotation speed of tilling shaft which is equipped with some tines or forks, the ratio of cutting width of soil, and tillage depth.
(2) The distances of soil displacement are obtained as follows:
crank type: -1.0-77cm
rotary type (knife tines): 12-62cm
rotary type (fork tines): 6-42cm
screw type: 19-34cm
(3) The inclination angles of tilled soil are obtained as follows:
crank type: 13-41°
rotary type (knife tines): 20-47°
rotary type (fork tines): 28-56°
screw type: 52-63°