关键词: 摘穗, 茎秆粉碎, 甩刀, 玉米, 大豆玉米带状种植

Abstract: In view of the current situation that there was machinery difficult to be used or no machinery to be used in the corn ear harvesting of soybean and corn belt planting mode in hilly and mountainous areas, a self-propelled small corn ear picker was designed. The machine adopted a vertical and horizontal ear picking roller to realize ear picking, and collected bags through a conveying device. The L-shaped small flail with ‘Y’ layout was used to achieve stalk crushing. The dynamic analysis of the picking process and the static analysis of the crushing process were carried out to determine the design parameters of the core device and conduct prototype trial production. The field test was carried out with the qualified rate of stem crushing length, ear loss rate and grain crushing rate as the test indexes to verify the rationality of the machine design. The results showed that under the conditions of productivity of 0.8 hm2/d, ear grain moisture content of 26.38% and stem moisture content of 71.25%, the qualified rate of stem crushing length was 92.4%, ear loss rate was 2.06% and grain crushing rate was 0.61%. The results show that the design of the machine meets the relevant national standards, and can meet the needs of mechanized corn harvesting in hilly and mountainous areas.

Key words: ear picking, straw crushing, swing knife, corn, belt planting of soybean and corn