Comparison of Crushing Effect of Differently Shaped Crushing Rollers on Whole-Plant Silage Maize

Based on the mechanical test (shear test, compression test), bond model of corn kernel and straw was established to explore rolling crushing effect different rollers. The type roller is different. material process by force (extrusion kneading) analysis reveals that disc (DCR) has characteristics large unit-length kneading area; spiral-notched serrated (SNSCR) transverse shearing material; they affect material. By means discrete element method simulation multiple regression variance are used systematically analyze data. optimal working parameters each roll (crushing speed, clearance, differential ratio) were obtained. bench materials with shapes carried out under parameters. evaluated a Binzhou screen silage grain-crushing score screen. crushed can be divided into three categories according size (broken grains passed through 2 mm sieve; broken 4.75 cannot pass sieve), stalk four thickness 4 8 19 sieve). classification basically consistent. results showed group had highest comprehensive rate 89.1% grain 87.7%, which most suitable for harvesting whole-plant maize (WSM).