论文部分内容阅读
分析了免耕播种机单体的受力 ,在土槽上对四杆悬挂机构的免耕播种机单体的工作性能进行了试验研究 ,建立了开沟器牵引阻力和入土阻力回归的数学模型。以此对水平阻力和垂直方向阻力进行了分析。结果表明在土壤坚实度为 16× 10 5～ 2 6× 10 5 Pa范围内 ,开沟器入土阻力为 6 86～ 980 N,牵引阻力为 44 1～ 784N;随工作速度和附加配重的增加 ,入土阻力和牵引阻力均增大。在受力特征研究的基础上 ,对影响开沟深度稳定性的结构参数及作业条件进行了分析 ,建立了播种机单体开沟深度稳定性数学模型 ,为免耕播种机合理设计提供参考
The force of no-till planter was analyzed. The working performance of no-till planter with four-bar linkage was experimentally studied on the soil trough. A mathematic model was set up for regression analysis of opener drag and soil resistance . In order to horizontal resistance and vertical resistance were analyzed. The results show that the open soil resistance of opener is 6 86 ~ 980 N and the traction resistance is 44 1 ~ 784N in the soil solidity range of 16 × 10 5 ~ 2 6 × 10 5 Pa. With the increase of working speed and additional weight , Soil resistance and traction resistance are increased. Based on the study of the stress characteristics, the structural parameters and operating conditions that affect the depth stability of the ditches are analyzed, and the mathematic model of the depth stability of single-unit opener is established, which provides a reference for the rational design of no-till planter