Arrangement of Working Bodies on the Cultivator Frame Based on Hydrodynamic Analogy

By analogy with hydrodynamic processes, when cultivating the soil with the “stingray” working bodies, the equilibrium of the fluid flow in the pipe is considered, which is obtained by the upper destroyed soil layer at a constant speed of the cultivator. The aim of the work is to arrange the working bodies on the frame. In the structure of the total duration of the tillage process by the “stingray” working body, the reduction of the transition process contributes to an increase in the established form of the “stingray” working body. To ensure the overlap of the “stingray” working bodies, it is advisable to place them on the frame at an angle to the direction of movement of the unit, according to the arrow-shaped scheme. When placing the “stingray” working bodies on the cultivator frame, it is necessary to ensure the overlap of the working bodies in the transverse direction. When placing the “stingray” working bodies in the longitudinal direction, a sufficient distance in the longitudinal direction should be provided to ensure coverage of the deformation zone of the interstand space. The relations revealing the interrelation of the parameters of the arrangement of the “stingray” working body on the cultivator frame with the physico-mechanical properties characterised by soil friction are obtained. The arrangement of the “stingray” working bodies on the frame is in the transverse and longitudinal direction 0.35–0.40 m and at least 0.50 m, respectively.