振动式挖掘机的设计与试验

振动式挖掘机采用了挖掘铲和振动筛分离式结构。通过土壤切削试验测定挖掘铲和振动筛上堆积的土壤平均高度,找出土壤分离效果好的参数组合,并用其对马铃薯进行了收获试验。首先采用复数矢量法对挖掘铲和振动筛面进行运动分析,建立运动方程,其次分析挖掘铲和振动筛的运动轨迹与土壤分离效果之间的关系,最后分析了采用优化参数组合收获马铃薯时的作业性能。结果表明,当挖掘铲和振动筛上最末端点的振幅分别不小于12.15mm和9.17mm,且挖掘铲和振动筛上最末端点从最低位置到达最高位置,直线回归方程的回归斜率分别不小于-1.87和-2.50时,挖掘机的土壤分离效果好。

Design and Experimental Study on Vibrating Digger

The vibrating digger blade and sieve mechanism were adopted by a vibrating digger. The average height of accumulation soil on vibrating digger blade and sieve has been measured through soil broken-up experiment, and the effects of displacement curve and soil separation on vibrating digger blade and sieve have been analyzed. When the amplitudes of end point of digger blade and sieve were greater than 12.15 mm and 9.17 mm, and regression slopes of end point of digger blade and sieve from lowest positions to highest positions were greater than -1.87 and -2.50, the results showed that vibrating digger soil separation has good effect.