THE IMPACT OF THE POSITION OF THE HYDRAULIC CYLINDER MOUNTING POINT ON THE CHASSIS LOAD IN MOBILE ELEVATING WORK PLATFORMS

The paper deals with the structural analysis of the typical mobile elevating work platform moving quasi-statically in the vertical plane. With certain approximations included, a model for calculating load transmission from the basket to the support on the vehicle chassis has been developed. It allows tracking changeable load conditions for each structural element, as well as tracking force changes in each hydraulic cylinder of the articulating boom, depending on the angles of boom joints and the geometric parameters of boom sections. Derived analytical dependencies can be used as the basis for design and optimization of the hydraulic installation and hydraulic component selection. On the other hand, the functions obtained enable position adjustment of the hydraulic cylinder mounting point of the first section in order to reduce the load impact on the chassis.