农业机械学报2017，Vol.48Issue(3)：84-91,8.DOI:10.6041/j.issn.1000-1298.2017.03.010
玉米收获机多棱立辊式摘穗装置设计与试验
Design and Experiment of Corn Harvester Polygonal Vertical-rollers Snapping Means
摘要
Abstract
The grain bite wounds and grain bite off of corn harvester snapping means caused a serious loss.Aiming at those existed problems,a polygonal vertical-rollers snapping means with simple structure,good snapping effect and high reliability was designed.The mechanism of the vertical vibration snapping broken was studied.And then the design methods of main structural parameters for polygonal verticalrollers snapping means were analyzed.Orthogonal design method was used for test design with influence factors of the number of edges,snapping roll speed and snapping roll diameter.By orthogonal test,it can be known that the factors affecting the quality of snapping in order of their importance were the number of edges,snapping roll speed and snapping roll diameter.By orthogonal test,it can be known that the optimum combination was snapping roll diameter of 7 cm,the number of edges of 8,snapping roll speed of 950 r/min.Test under optimum combinations was carried out,and it was found that the grain broken rate was 0.13％,the grain loss rate was 0.28％,and the rate of broken stem was 0.53％.The grain losses and damages were both far lower than the national standard.Under optimum conditions,validation tests were done to determine the most appropriate size of the interior angle adjustment.The test result showed that the resizing interior angle A was 16°,which was half of the maximum interior angle range of adjustment,and under this conditions the harvesting quality was the best.关键词
玉米收获机/激振式/立辊式摘穗装置/多棱体Key words
corn harvester/vibration snapping/vertical-rollers snapping means/polygonal分类
农业科技引用本文复制引用
耿端阳,李玉环,孟凡虎,孟鹏祥,倪国庆,张明源..玉米收获机多棱立辊式摘穗装置设计与试验[J].农业机械学报,2017,48(3):84-91,8.基金项目
山东省农机装备研发创新计划项目(2016YF030)和山东省科技计划项目(2014GNC112004) （2016YF030）
