臺灣博碩士論文加值系統

本研針對插秧機秧苗推出機構進行分析，以建立推出凸輪與相關機械元件
設計應注意之準則，同時進行秧苗推出機構運動產生之振動量測試驗，繼
而利用 cubic spline 合成曲線規劃設計凸輪之輪廓，使秧苗推出桿在運
動中所產生之急衝度最小，進而選用合適之推出彈簧，組合完整之推苗機
構，以期修改後之機構，可降低機構之振動，並進行實際插植試驗，建立
秧苗推出機構與插植性能之關係．　　研究結果歸納如下: 1.確立推苗機
構與缺株﹑傷苗等插植性能並無顯著之關係，而與倒伏與浮苗有關。
2.建立推出凸輪之設計依據與推出彈簧之選用準則。 3.本研究中所使用
之凸輪設計法，可應用於農機上其它高速凸輪之設計。

In this study ,the analysis of the seedling pushing mechanism
had been undertaken. The guidelines of designing a cam
mechanism had been also established. Measurment on the
vibration induced by the mechanism had been carried out. The
cubic spline function was used to synthesize the profile f the
cam while the jerk of pushing rod was minimized.e mechanism
construced with various new design of cam and some spring was
investigated. Furthermore, a transplanting experiment was
conducted to evaluate the performance of the mechanism. The
results of this study are summarized in the following :
1.Inappropriate design of the pushing mechanism may cause the
transplanted seedling to be floated or oblique, but it plays no
role in seedling to be vacated or get hurt. 2.The guidelines of
designing a cam mechanism and selecting a pushing springs have
been established. 3.The methodology of designing a cam
mechanism development in this study can be applied to other
similar mechanism of the the agricultural machinary.