Coupled Bionic Design Based on Primnoa Mouthpart to Improve the Performance of a Straw Returning Machine

The high energy consumption and low crushing length qualification rate of traditional straw returning machines in the main maize-growing regions northeast China make it difficult to promote operations region. primnoa locust mouthpart is extremely efficient cutting maize rootstocks. In this paper, was found that there are significant differences between conventional machine, these exist mainly edge structure motion. Thus, paper develops a coupled bionic design for structural kinematic coupling elements develop machine. This operating performance machine affected by blade rotation radius output speed drive mechanism through DEM (discrete element method) simulation, optimal combination two parameters 248 mm 930 r/min speed. Finally, finds most obvious operational difference compared with can reduce power 9.4–11.7% improve 10.4–14.7% comparison test. Based on above findings, suggests future research development machines, more attention be focused finding suitable prototypes improving methods.