Qualitative Indexes of a Plane Cutter for Shallow Tillage with Optimized Parameters

Abstract

The levelling of the field surface after shallow tillage with a planar cutter, characterized by such a qualitative indicator as combiness, is within the limits allowed by agrotechnical requirements. We have developed an original design of a plane cutter for shallow tillage. The planar cutter for shallow tillage has various options for the sharpening angle of the rack and mortar, which have been optimized. Optimal according to the criterion of minimum energy consumption while observing the quality of minimal tillage, the following parameters of the plane cutter were selected: the angle of sharpening the rack 50 degrees, the angle of the solution 104 degrees. Thus, the removal of wet layers to the soil surface was not observed during shallow tillage with a planar cutter. The amount of erosive-hazardous particles after tillage with a planar cutter does not increase, even slightly decreases (within 0.4%), which corresponds to agrotechnical requirements. The obtained qualitative indicators, shown in Table 1, were determined on a stubble background pretreated by disk working bodies. Thus, the technological process of a combined unit with sequentially arranged disks and a plane cutter was simulated.