Investigation into Experimental and DEM Simulation of Guide Blade Optimum Arrangement in Multi-Rotor Combine Harvesters

The cleaning performance of the shoe a multi-rotor combine harvester has proven to be poor owing threshed output entering section in an uneven manner. Experimental results indicated that arrangement guide blades on return plate surface significant effect distribution. In this paper, DEM (discrete element method) simulations were carried out EDEM software examine height blade, installation angle, and number distribution before shoe. Based simulated under different arrangements, optimum location was obtained. simulation’s verified by field experiment consistent with experimental results. indicate significantly improved proper blade arrangement. corresponding grain impurity ratio declined from 1.26% 0.67%, sieve loss ratio, decrease 53.2%, reduced 1.11% 0.52%.