THE ANGLE OF STATIC LATERAL STABILITY FOR SELF-PROPELLED AGRICULTURAL MACHINES

One of the safety criteria for self-propelled agricultural machinery is the angle of lateral static stability. The authors have analyzed the methods for determining the angle of static lateral stability for self-propelled agricultural vehicles, a signifi cant part of which is equipped with a balancer suspension of the steering axle. The study has revealed a signifi cant deviation of the experimental values of the indicated angle from the calculated value determined according to GOST 33691-2015. Using large-scale models of agricultural machines (Claas Jaguar forage harvester, Claas Axion and John Deere tractors), the authors have evaluated the effect of the balancing suspension on the value of the angle of lateral stability and compared the obtained data with the calculation results for the considered relationships. It has been established that when using balancing suspension of the steering axle in machines, the lateral stability angle depends not only on the height of their gravity center, but also on its longitudinal displacement. Thus, in order to obtain the actual calculated data for the considered angle, it is necessary to use methods that take into account the infl uence of the balancing suspension.