This thesis focuses on a research analysis of the technology of similar separators, the legislative regulations of the trailers and the conceptual design of the mobile gravel sorter itself. The thesis also includes functional, dimensional and force calculations of the individual nodes of the classifier. The classifier also includes conveyor belts for conveying material up to a height of approximately 1.5 m. Calculations and selection of the necessary drives for certain parts of the machine are also included. Furthermore, the work includes strength FEM calculations of selected structural nodes under different loading regimes. Finally, the DEM simulation of the sorting process in Altair EDEM is discussed. The thesis, including the assembly dr...