Application Height Control System of a Wheeled Vehicle Running on a Loose Sandy Soil

In earth moving sites, several wheeled vehicles are used to excavate a sandy soil, or to pull another construction machinery. Here, the mechanism of land locomotion of a 5.88 kN weight, two axles and four wheel vehicle running on a loose sandy soil is analysed theoretically. The optimum height of application force and the optimum eccentricity of the gravity center to obtain the largest value of the maximum effective tractive effort can be clarified by means of an analytical simulation program. As the results, it is clarified that the optimum height of application force is 30 cm and the optimum eccentricity of the gravity center is 0.05.