ANALYSIS IN DEVELOPMENT OF TRANSMISSIONS FOR MODERN WHEELED TRACTORS

Abstract

The increase in the production of agricultural food products leads to the creation of energy-rich wheeled tractors, which are able to realize the power of the engine by increasing the speed of movement (productivity) or traction characteristics. But this direction of development has a counterbalance in environmental protection actions. So, in the European Union, emissions of carbon monoxide, hydrocarbons, nitrogen oxides, solid particles, etc. are limited for off - road vehicles. The outlined directions of development are of a contradictory nature, so tractor manufacturers are trying to create transmission units designed to meet the performance and environmental needs of a wheeled tractor. Therefore, the material of this article aims to analyze the technical solutions of the world's tractor manufacturers in the construction of transmissions of wheeled tractors. When solving the set goal, a technique was used, which involved analysis by the method of torque transformation (stepped and stepless) and the principle of action (mechanical, hydraulic, electric). As a result, the models of such tractor manufacturers as: Case IH, Claas, Deutz-Fahr, Fendt, John Deere, Massey Ferguson, New Holland, Steyr, Valtra were analyzed. The practical significance of the work lies in the provision of recommendations on current technologies for the construction of transmissions of wheeled tractors.