Structure Optimization of Seeding Device of Small Wheat Planter Based on Orthogonal Test

In order to further improve the backward status of agricultural infrastructure construction in hilly and mountainous areas, this paper adopted the method of orthogonal experimental design on the basis of existing small wheat planter seeding devices at home and abroad, and selected three factors that had the greatest influence on seeding efficiency and seed damage rate, namely, planting height, rotation speed of seeding wheel and number of single seeding, and obtained the optimized structural parameters. Then the structural design is carried out according to the structural parameters. The above research results show that the orthogonal experimental design combined with numerical calculation and regression analysis can effectively optimize and adjust the structural parameters of the seed arrangement, improve the seeding efficiency and reduce the seed damage rate at the same time, among which the seeding efficiency is increased by 0.23 times /min, and the seed damage rate is reduced by 0.0024%.