Abstract
The paper presents results of investigations on the process pertaining to interaction of a driving wheel with ground surface and describes methodology for optimization of backbone parameters. The mentioned process has some specific differences in comparison with the process of wheel rolling along hard surface. Ground surface is represented by mixture of sandy and clay particles with plant residues and it has a number of physical and mechanical properties. The main of these properties is resistance of soil against compression and displacement. Compression process determines a track depth and resistance to motion and displacement process determines wheel gripping property and its tangential traction force. While executing the investigations laws of compression and displacement proposed by Prof.V. V. Katsygin as the most adequate reflection of actual processes have been used in the paper. Motion of the driving wheel along ground surface is accompanied by its slipping. It has been determined that the maximum wheel traction force is formed not with 100% slipping as it was supposed until present but the value has been obtained at 45–60 % slipping according to soil category. The developed integral equations with due account of the aspect make it possible to calculate road hold characteristics of driving wheels of the designed wheel tractor and evaluate its traction, speed and economic characteristics. Methodology has been developed for optimization of backbone parameters of wheeled running gear in the designed tractor such as design mass and adhesion weight, width, diameter and air pressure in a tire. The proposed methodology has been introduced in designing practice of wheeled tractors at OJSC “Minsk Tractor Works”.
Highlights
The paper presents results of investigations on the process pertaining to interaction of a driving wheel with ground surface and describes methodology for optimization of backbone parameters
The mentioned process has some specific differences in comparison with the process of wheel rolling along hard surface
Ground surface is represented by mixture of sandy and clay particles with plant residues and it has a number of physical and mechanical properties
Summary
Исследование процесса взаимодействия ведущих колес трактора с грунтовой поверхностью. В статье отражены результаты исследования процесса взаимодействия ведущего колеса с грунтовой поверхностью, приведена методика оптимизации системообразующих параметров последнего. Процесс сжатия определяет глубину колеи и сопротивление движению, а процесс сдвига – сцепные свойства колеса и его касательную силу тяги. Разработанные с учетом этого обстоятельства интегральные уравнения дают возможность рассчитать тягово-сцепные качества ведущих колес проектируемого колесного трактора и оценить его тяговые, скоростные и экономические свойства. Разработана методика оптимизации системообразующих параметров колесного движителя проектируемого трактора, таких как конструктивная и сцепная массы, ширина, диаметр и давление воздуха в шине. Для цитирования: Исследование процесса взаимодействия ведущих колес трактора с грунтовой поверхностью / В. В. Гуськов [и др.] // Наука и техника. 1)Belarusian National Technical University (Мinsk, Republic of Belаrus), 2)OJSC “Minsk Tractor Works” (Мinsk, Republic of Belаrus)
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