(38(1):140-155)A Study on the Performance of an Impact Type Peanut Thresher

Abstract

落花生收穫機開發時所遭遇的瓶頸在於脫莢機構之改良。在此研究中，以打擊式脫莢機構進行落花生脫莢性能之測定，由試驗結果顯示，作業方式之有關流量和投入方式對於脫莢性能並無顯著影響，作物含水率的影響則十分顯著。切蔓處理後的花生植株可顯著降低破莢率。承網與脫莢筒間隙減少時亦可降低破莢率。脫莢筒轉速的增加亦增加破莢率。 The bottle neck problem in the development of a peanut harvester is the design and improvement of threshing mechanisms. In this study, the threshing performance of an impact type peanut thresher is analyzed. The results indicate that the feed rate and feeding type have no correlation with the threshing performance. The moisture content of peanut pods significantly affect the amount of damaged pods. Vine-cutted peanuts have the lower percentage of damaged pods. The reduction of clearance between concave and cylinder also decreases damaged pods. The increase of cylinder speed causes more damaged pods