Major trends transmissions wheeled tractor

Abstract

The article gives an analysis of the use of tractor transmission from the position of the system approach. The principle of choosing the most popular tractors with transmissions has been identified, which allows them to be used most efficiently in a specific region. This not only takes into account the market situation and the proposals of competing firms, but also the directions of economic activity and natural and climatic conditions. The demand for tractors in the world market is usually estimated by the number of models that have been tested in recent years. It is revealed that in the world market the most demanded tractors with transmissions of a range type with shifting gears under load within the range, transmissions with synchronized gearboxes and boxes with gears of constant muff coupling. At the same time, the number of tests of tractors with hydrostatic-mechanical transmissions increased during this period, which indicates an increase in demand for these tractors in the world market. It should be noted that on tractors of small and medium power, it is mainly used transmissions with synchronized gearboxes. On tractors with a power of 150-260 hp, stepless two-stream transmissions are used much more often than transmissions with shifting gears under load. On 52% of tractors with a capacity of 260-400 hp, the application of stepless two-flow transmissions is noted. The article analyzes the trends in the development of transmissions of wheeled tractors and shows an increase in demand in the world market, especially for the West European region, on tractors with a continuously variable hydraulic-mechanical transmission of Fendt. In the Ukrainian market in recent years, there has been an increase in demand for tractors of this company.