微型喷药机关键部件优化及运动学仿真

Optimization Design and Kinematics Simulation on the Key Components of the Small Sprayer

针对传统的微型三轮高地隙喷药机田间施药时运行不稳定、安全性能差及施药不准确等问题,对传统的十字轴万向节进行改进和优化,设计了微型高地隙喷药机。利用ANSYS Workbench软件对喷药机的万向节动力转向机构进行有限元强度分析和优化设计,建立了十字轴万向节运动约束方程和数学模型。利用ADAMS软件对优化后的模型进行运动学仿真分析,观察模型运动规律,并对物理样机进行了田间性能试验,旨在为新型高地隙喷药机的结构再优化提供理论依据。

According to the problems of unstable operation,poor safety and inaccurate application of the traditional mini three-wheel high clearance sprayer in the field.Improved and optimized the traditional universal joint of the cross axis,and it designed a new type of high clearance sprayer in the paper.Analyzed and optimized the universal joint power steering mechanism of high clearance sprayer by ANSYS Workbench software for the finite element analysis and optimization.The motion constraint equation and mathematical model of the cross axis universal joint are established,and the optimized model was simulated by ADAMS software for kinematics simulation,and complete field performance test to the physical prototype.It provided theoretical basis for the optimization of the structure of the small high clearance sprayer in the future.