Abstract
Constantly increasing requirements to reduce the energy efficiency of technological processes in crop production call for designing new mechanization means capable of cutting and performing surface tillage in one pass of a unit. The study of modern scientific and patent literature has revealed that the existing individual models of such machines are not used in agricultural production. The work aims to theoretically justify a new hybrid unit designed for simultaneous cutting and soil rotatilling based on the system approach. Theoretical studies showed that the initial requirements for removing low-value and weedy vegetation with simultaneous soil surface rotatilling. The authors considered a model of combining these technological processes, taking into account the requirements for fodder harvesting technology. A provision was made that during soil preparation it is necessary to undercut the vegetation completely with the least energy inputs without reducing its quality for further impacts. In mathematical designing of the working unit, rheological properties of cultivation objects – soil layer and vegetative material – were taken into account. Based on these research outcomes, the authors developed the effective design of a working unit combining cutting with soil rotatilling. Comparative analyses of the agro-energy intensity of the combined operation showed a reduction of specific energy consumption by 10…12% on average.
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