With the rectilinear movement of tractors, frontally aggregated by a mounted tool, in conditions of sloping fields, there is a decrease in the longitudinal and transverse stability of machine-tractor units. In the proposed work, the main ways of changing the stability parameters of wheeled tractors performing technological operations on sloping sections of fields are considered and analyzed. An original mathematical apparatus is proposed that substantiates the considered dependences on the basic structural and technological characteristics of a promising machine-tractor unit with a slitting piercer, the design of which is confirmed by patent for invention No. 2769449. The conditions for increasing the stability of wheeled tractors with a frontally mounted tool, in particular the considered slitting piercer, performing technological operations on sloping sections of fields, are determined. It is established that the coefficient of controllability of wheeled tractors with a frontally installed slitting piercer depends on the design features of the tractor, the weight and overall characteristics of the attachments, the number and size of the buried working bodies and soil conditions. It is noted that when moving a wheeled semiframe power vehicle with a frontally installed slitting piercer along a trajectory close to a rectilinear trajectory in conditions of sloping lands, the main factor determining the conditions of movement of the tractor along a given trajectory will be its stability. It is proved that in the considered case, the main reason for the withdrawal of the machine-tractor unit from the equilibrium position will be the moment of action of forces and the resistance of the front-mounted gun when it turns.

Surin Roman O., Krivutsa Zoya F., Kuznetsov Evgeniy E., Shchitov Sergey V., Panova Elena V.

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