Justification of parameters of a four-row disk harrow using the experiment planning method

Abstract

Disk harrows with individual installation of the disk on a separate stand are widely used in resource-saving technology of soil preparation for grain crops after late harvesting of row crops (corn, sunflower). Four-row disc harrows provide soil preparation for grain crops in one or two passes through the maize and sunflower predecessors. The main parameter of the disk harrow is the depth of processing, the value of which depends on the disk setting angle to the unit movement direction. An increase in the setting angle is accompanied by not only an increase in the depth of processing, but also the traction resistance and fuel costs for soil treatment increase. However, a number of disk parameters also affect the processing depth value-the diameter, the inclination angle of the disk in the vertical plane, the width of the chamfer cutting edge, the vertical load on the disk, the thickness of the disk and a number of others. Consideration of these factors during the adjustment to the required processing depth will reduce the disk setting angle to the direction of the unit movement, which will help to reduce disk harrow traction resistance and increase the fuel efficiency of preparing the soil for sowing grain on rowed predecessors.