Theoretical substantiation of a type of wheel farm tractors for Ukraine

Abstract

The purpose. To develop new theoretical bases of definition of a type and to determine the range of change of nominal traction effort of wheel farm tractors. Methods. Substantive provisions of the theory of tractor, higher mathematics, in particular laws of geometrical progression and the theory of numbers are used. Results. On the basis of the advanced theoretical approaches the type of wheel farm tractors is developed for the first time for Ukraine. For each traction class the technique of determination of average value and possible (admissible) range of change of nominal traction effort is offered. Conclusions. New type of wheel farm tractors for Ukraine should be presented by power means of 5 basic traction classes: 0,6; 1,1; 1,8; 3 and 5. Each of the resulted figures means the nominal traction effort of a tractor reduced exactly in 10 times (Ptr.n) which is measured in kN. The range of change of this parameter for each power means of this or that traction class should be within the definite limits.