###### Abstract  
The effectiveness and precision of transporting wood chips on the transport trailer or hopper depends on an inclination angle, a conveyor belt speed, and length. In order to devise a methodology aiding designing and the selection of technical and performance parameters (aiding the settings of conveyor belt sub-assemblies), the authors carried out the simulation tests concerning wood chips transport on the belt conveyor and their outlet. For the purposes of these tests, a simulation model was performed in the Rocky DEM (discrete element method) software in the numerical analysis environment and compared to analytical tests. The tested wood chips were taken from cherry plum branches chipping processes (_Prunus cerasifera_ [PERSON]. 4:17. 1789 (Gartenkalender 4:189-204. 1784)), out of which seven basic fractions were separated, which differed mainly in terms of their diameter from 5 mm to 50 mm and the length of 150 mm. The article presents the results of wood chips ejection distance in the form of the 3D functions of wood chips ejection distance depending on the conveyor belt inclination angle and belt speed. The results are presented for five conveyor belt lengths (1 m, 2 m, 3 m, 4 m, 5 m). The tests also involved the conveyor belt inclination angle in the range from 10\({}^{\circ}\) to 50\({}^{\circ}\) and the belt velocity in the range from 1 m/s\({}^{2}\) to 5 m/s\({}^{2}\). The numerical test results demonstrate higher average values of wood chips ejection distance than designated in the analytical model. The average arithmetical difference in the results between the numerical and analytical model is at the level of 13%. chip wood; discrete element method; belt conveyor; wood chips transport; wood chipper 202020 fumes emission, they are equipped with combustion engines with positive ignition with the maximum capacity of 19 kW [12; 13]), which is presented in Figure 1, where two out of four designs require the conveyor belt system for loading wood chips. Transport assistance systems are requirements in a flail chipper (Figure 1c) and a cylindrical chipper (Figures 1d and 2), whereas a drum chipper (Figure 1b) and a disc chipper (Figure 1a) do not need any wood chips transport assistance mechanisms. Conveyor belts for wood chips transport used with a wood chipper have an option of adjusting the conveyor belt inclination angle and the belt travel velocity. Furthermore, at the purchase stage, it is possible to select the conveyor belt length. All these parameters are to enable the effective and precise transport of wood chips to the designated place, e.g., to a transport trailer or hopper transported by forklifts. However, the authors notice the lack of tools aiding the selection of such parameters, enabling the precise positioning and selection of drive and conveyor belt settings. This problem is observed at the production stage and during operation. There are the experimental and simulation tests available in the literature which concern processes using wood chips. They refer primarily to the tests on the raw material as an energy product at the various stages of processing and in various applications. The experimental tests analyze the impact of chips origin due to the calorific value and exhaust fumes emission, e.g., on account of tree species [14], mixture proportions [15], an acquiring method [16; 14], a drying method [17], and pollution in the event of wood chips from recycling [18]. There are also the descriptions of the methods of processing wood chips to fuels in the form of ethanol fuel [19] or concentrated pellet [20]. The main group  
Figure 1: Low power wood chipper: (**a**) disc chipper, (**b**) drum chipper, (**c**) flail chipper, (**d**) cylindrical chipper. Figure 2: Cylindrical wood chipper with the conveyor belt system, where: 1—cutting mechanism, 2—driving unit, 3—inlet channel, 4—outlet channel, 5—conveyor belt, 6—conveyor belt position adjustment system.