斜齿外啮倾斜式宽窄行插秧机分插机构的设计

依据水稻宽窄行种植农艺要求,利用交错轴斜齿轮传动机构,设计了一种倾斜式宽窄行分插机构;在保证育秧方式和秧箱不变的前提下,实现了宽窄行插秧。针对倾斜式分插机构取秧时存在的问题,提出了直取式栽植臂方案。对分插机构进行了机理分析,采用矩阵法对秧针位姿改变带来的一系列变动进行理论分析,完成了交错轴斜齿轮倾斜式宽窄行分插机构的相关计算,得到机构最优倾斜角γ=9.89°;栽植臂水平调整角度δ1=6.79°;秧针平面与水平面的夹角δ2=γ=9.89°;利用虚拟试验验证了方案的正确性和可行性。

Design of narrow-wild rice transplanting mechanism with external helical gear transmission

According to the agronomic demand of narrow-wild rice planting, a kind of inclined narrow-wild rice transplanting mechanism was designed to transplant rice in narrow-wild rows. A helical gear transmisson mechanism with intersecting axles was employed. In addition, it came true without changing rice seeding raising process and raising tray. But there were several problems when the rice transplanting mechanism picked rice seeding, in order to solve the problems, an innovative planting arm that picked the rice seeding vertically was proposed. The mechanism analysis of transplanting mechanism and theoretical analysis for changing planting arm by matrix method were also conducted. As a result, parameters of narrow-wild rice transplanting mechanism composed by helical gear transmission with intersecting axles were calculated: The optimum slant angle (γ) was 9.89°, the regulating angle (δ 1 ) of planting arm was 6.79°, and angle (δ 2 =γ) between seedling-needling plane and horizontal plane was 9.89°. At last, the correctness and feasibility of this design were verified by adopting virtual testing.