Дослідження умов доцільності застосування подвоєних або потроєних шин колісних енергетичних засобів

Abstract

Goal. To determine and justify the conditions under which the use of double/triple tires of wheeled energy vehicles instead of single ones will be appropriate. Methods. Theoretical studies were carried out using the basics of the theory of tractors and agricultural machines. The object of research was the MTZ1221 multipurpose-weed tractor, the front axle of which was studied in variants with single, double, and triple tires. Soil compaction in the passage zones of these tires was taken as an argument for the yield function of an agricultural crop (spring barley). Results. Calculations established that the intensity of reducing the depth of the wheel track, compacting the soil, and increasing the yield of the cultivated crop (spring barley) was higher when using a double tire compared to a single one, and lower in the case of replacing a double tire with a triple one. Due to the use of a triple tire instead of a single one, the depth of the created track was reduced. Conclusions. A new analytical dependence was obtained, which could be used when evaluating the feasibility of using doubled or tripled tires of wheeled energy vehicles to reduce their compacting effect on the soil and correspondingly increase the yield of cultivated crops. By evaluating the use of different numbers of front tires on the example of the MTZ1221 tractor, it was established that the intensity of reducing the depth of the wheel track, compacting the soil, and increasing the yield of the cultivated crop (spring barley) was higher for a double tire compared to a single tire, and lower in the case of replacing a double tire with a triple one. The use of a three-wheel tire instead of a single one led to a decrease in the depth of the created track by at least 30%, a decrease in soil compaction by 42%, and an increase in the yield of the cultivated crop by 2.2 times.