高速水稻插秧机新型分插机构的设计

针对高速水稻插秧机在取秧工作时容易造成伤秧的现象,提出了采用新型双偏心卵形齿轮行星系分插机构的设计方案;建立了该机构的虚拟样机模型并进行仿真分析,分析结果表明:与传统设计方案相比,新的设计方案秧针运动轨迹与秧门的位置关系得到优化;取秧时,秧针运动轨迹与秧盘几乎垂直,保证了秧苗的质量;当秧箱导轨夹角变为80°、推秧角为78°、推秧角与秧苗和秧针夹角的和接近90°时,优化了插植后秧苗直立性,满足了农艺要求。

The Design of High-speed Rice Transplanter New Mechanism

For the phenomenon of high-speed rice transplanter likely to cause injury when it works in the stage of getting seedling, the new design scheme of double eccentric oval gear planetary with transplanting mechanism system is put for-ward.Through the design of double eccentric oval gear, establish the system model,get the new type of double eccentric ovate transplanting mechanism with planetary gear of virtual prototype.The virtual prototype model of mechanism is estab-lished and simulation analysis is done, the analysis results show that compared with the traditional design scheme, in the new design scheme, the relationship between seedling needle trajectory and the seedling door position was optimized. When taking seedling, seedling needle trajectory and seedling plate are almost vertical, which ensures the quality of the seedlings;when the seedling box guide angle turns to 80 °,seedling angle to 78 °,the sum of seedling pushing angle and seedling or seedling needle angle closes to 90 degrees, seedlings orthostatic is optimized after the planting, and agronomic requirements is meeted .