Abstract
The article describes the current development state of equipment and mechanical tillage technology. It is revealed that creation of tillage tool drags for the modern tractors of high traction class, is associated with certain difficulties caused by the fact that they must be wide, hinged or trailed and they must match the requirements of regulatory documentation, as well as fully ensure the implementation of agrotechnical requirements for technological processes. We conducted laboratory and field studies in order to obtain quantitative characteristics of changes in the rolling resistance of tractors from their working conditions in the soil environment. It is established that a working body operating in the free cutting mode has the minimum rolling resistance, and the maximum rolling resistance is obtained in the mode of blocked cutting at equal speeds. The technique proposed in the article allows a reasonable approach to the choice of the scheme of a wide-reach flat cutter for the tractor of traction class 8 according to the criteria of metal consumption and rolling resistance.
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