Mechanical investigation of a supplementary scraper-type working part

The paper presents a method for performing a static analysis with finite elements for the optimization of the design of a supplementary working scraper type part, mounted with an adjustable adapter behind the body, which equips a reversible plow intended for plowing the soil, together with the results which shows the distribution of the stresses affecting the additional working part as a result of the loads and forces applied to it. The analysis was carried out for two different working regimes: a regime in which the working depth of the additional working body is 50 mm below the plowing working depth of 300 mm, and the forward speed of the aggregate during work is 1 m/s and one where the working depth is 100 mm below the plowing working depth of 300 mm and the forward speed is 2 m/s. The harrow with the scraper is used for loosening the soil layer, not mobilized by the harrow, to a depth of up to 100 mm compared to the plow's working depth. The compacted layer loosened by the scraper becomes permeable to moisture and air. It is recommended to set the scraper at the beginning to a soil depth of 50 mm and gradually bring it to a depth of 100 mm to include layers of soil in circulation during the plowing work, to a total depth of up to 350 mm. The results of this work are primarily aimed at designers of agricultural machines for tillage, but not only.