UDC 631.313.5
DOI 10.36461/NP.2024.72.4.024
THEORETICAL JUSTIFICATION OF ROD-TOOTHED ROLLER DESIGN PARAMETERS IN SOIL CULTIVATORS FOR PRE-SOWING OPERATIONS
K.Z. Kukhmazov, Doctor of Technical Sciences, Professor, R.R. Khabibullin, engineer
Penza State Agrarian University, Penza, Russia,
tel. 89273624824,
In the traditional technology of cultivation and harvesting of grain crops, pre-sowing soil cultivation is one of the main agricultural operations. It is performed by various cultivators and combined units. In general, they reliably and efficiently perform the technological process, however, when processing heavy soils, the degree of crumbling of the soil prepared for sowing does not meet agrotechnical requirements.
The article provides a brief description of the proposed rod-toothed roller of the pre-sowing tillage cultivator, which allows to significantly increase the degree of soil crumbling, parametric equations of the trajectory of the movement of the end of the tooth of the rod-toothed roller, dependencies for determining the speed and acceleration of the end of the tooth are obtained. The design parameters of the rod-toothed roller (radius of the rod roller, maximum length of the tooth, minimum number of teeth in one vertical plane) are theoretically substantiated. As calculations show, the minimum radius of the rod roller R = 150 mm, maximum tooth length lmax = 50 mm, minimum number of teeth in one vertical plane n_min = 5 pcs. Since the teeth are rigidly attached to the rods installed at an angle, the number of rods (lead) on the rod-tooth roller m must be equal to the number of teeth in one vertical plane, m = n.
Keywords: cultivator, combined unit, pre-sowing soil cultivation, rod-toothed roller, rod roller tooth, degree of soil crumbling, design parameters, roller diameter, tooth length.