ЭКСПЕРИМЕНТАЛЬНО-АНАЛИТИЧЕСКАЯ МЕТОДИКА ОПРЕДЕЛЕНИЯ УГЛА ПОПЕРЕЧНОЙ СТАТИЧЕСКОЙ УСТОЙЧИВОСТИ МАШИН С БАЛАНСИРНОЙ ПОДВЕСКОЙ МОСТА УПРАВЛЯЕМЫХ КОЛЕС

Abstract

The criterion to determine the stability of self-propelled agricultural machines is the angle of lateral static stability. The authors analyzed methods for determining the angle of lateral static stability of self-propelled wheeled vehicles used during the state tests. The analysis revealed a signifi cant deviation in the obtained results depending on the experimental and analytical methods used. Based on their analysis, it was determined that such a discrepancy in the results can be explained by a signifi cant simplifi cation of the calculation scheme used in the experimental-analytical method, instead of the tire deformation taken into account. The authors propose a method for determining the angle of lateral static stability for wheeled vehicles equipped with a balanced suspension of a steering axle. Moreover, the paper presents additional measurements and established relationships to take into account the eff ect of both the suspension, and tire deformation on the considered angle. To determine the angle of the lateral static stability of the machine, taking into account the infl uence of the balance suspension of the steering axle and the tire deformation, the authors propose to use a graphical method. Using this method reduces the labor intensity and increases the information value of the analysis, showing the signifi cance of each factor aff ecting the angle. The paper shows the expediency of using the proposed technique, which makes it possible to signifi cantly reduce the deviation of the calculated and experimental values of the lateral static stability angle.