花生捡拾联合收获机喂入输送装置的设计与试验

Design and Experiment of Feeding and Conveying Device for Peanut Picking Combine Harvester

针对目前花生捡拾联合收获机捡拾台螺旋喂入与升运输送过程中秧果易拥堵而造成荚果破碎高等问题,设计了一种花生捡拾联合收获机喂入输送装置。通过动力学与运动学的秧果喂入和输送过程分析,开展花生秧果与搅龙输送装置、花生秧果与链靶升运装置的互作关系研究;通过理论分析与计算,确定秧果喂入和输送关键部件的结构和运动参数,并进行集成研究。以田间自然晾晒3~5天的花生植株为材料,以输送率、荚果破碎率为试验指标,以喂入量、喂入搅龙转速、喂入口输送间隙为因素进行台架试验,结果表明:当喂入量3kg/s、喂入搅龙转速150r/min、喂入口输送间隙90mm时,作业性能达到最优,输送率为99.83%,荚果破碎率为0.28%,输送过程稳定可靠,未发生堵塞现象,满足花生联合收获机的作业要求。

In order to solve the problem of high broken pods caused by the jam of seedlings in the process of spiral feeding and lifting transportation of peanut picking combine harvester,a feeding and conveying device of peanut picking combine harvester was designed.Through the analysis of plant feeding and transportation process of dynamics and kinematics,the interaction relationship between peanut plants with agitator conveyor,peanut plants with chain target lifting device was studied.Through theoretical analysis and calculation,the structure and motion parameters of the key components of feeding and transportation were determined,and the integrated research was carried out.The peanut plants which were naturally dried for 3~5days in the field were used as materials,and the conveying rate and pod breakage rate were used as test indexes.The bench test was carried out with the feeding amount,feeding stirrer speed and feeding inlet conveying gap as test factors.The test results showed that when the feeding amount was 3kg/s,the feeding stirrer speed was 150r/min,and the feeding inlet conveying gap was 90mm,the operation performance reached the optimum:the conveying rate was 99.83%,the pod breakage rate was 0.28%,the conveying process was stable and reliable,and there was no blockage,which met the operation requirements of peanut combine harvester.