棘轮齿轮式水稻钵苗移栽纵向送秧机构设计与试验

为了研究棘轮齿轮式水稻钵苗移栽纵向送秧机构的可行性,分析了水稻钵苗移栽纵向送秧机构的工作原理和棘轮齿轮式机构的传动特性,针对高速回转式水稻钵苗移栽机送秧机构需满足传动平稳、传动比精确、工作可靠性好、作业中没有积累误差、振动和噪声小的特点,设计棘轮齿轮式水稻钵苗移栽纵向送秧机构,对其结构设计中的重要几何参数建立了数学模型,进行了优化,采用CAD/CAE软件建立虚拟模型。对该机构进行了台架试验,结果表明,该种传动形式的纵向送秧机构能够满足高速回转式钵苗移栽机的工作要求,为研发高速回转式钵苗移栽机纵向送秧机构提供了理论和实践依据。

Design and Experiment on Longitudinal Seedling Feeding Mechanism for Rice Pot Seedling Transplanting with Ratchet Gear

In order to discuss the feasibility of longitudinal seedling feeding mechanism for rice pot seedling transplanting with ratchet gear, the working principle of longitudinal seedling feeding mechanism and the transmission characteristics of ratchet gear mechanism were analyzed. Considering that the pot seedling feeding mechanism of high-speed rotary pot seedling transplanting machine must meet the requirements of steady transmission, accurate transmission ratio, good working reliability, no accumulated error in operation as well as low vibration and noise, the longitudinal seedling feeding mechanism for rice pot seedling transplanting with ratchet gear was designed. The mathematical models of some important geometrical parameters in the design of structure were built and then these parameters were optimized. Besides, the virtual model was also built by using CAD/CAE software. At last, the bench test was carried out. The test result showed that the proposed longitudinal seedling feeding mechanism could meet the working demands of high speed rotary pot seedling transplanting machine, which provides theory and implement basis for developing this kind of transplanting mechanism.