Analytical study of the design parameters of the grinding unit of disk harrows

Abstract

Abstract The article describes the need for multiple passes with disc harrows to increase the degree of grinding of crop residues when preparing the soil for sowing winter cereal crops after row crops. The effectiveness of using additional grinding units for disk harrows is indicated in order to increase the technological efficiency and reliability of the soil preparation process. The analytical dependences are proposed for determining the radius of the grinding unit and the number of bars depending on the structural and technological parameters of the process, biometric parameters of the cut stems and soil hardness, subject to the established cutting value. As an example, a calculation based on the initial data from the reference literature is presented. Based on the obtained dependencies, graphs were constructed, and their analysis was carried out in order to determine ways to increase the efficiency of using the grinding unit. To increase the efficiency of the grinding unit, additional ballast weights and the manufacture of bar fasteners at different distances from the axis of rotation are proposed as technological adjustments.