新型斜置切纵流联合收获机脱粒分离装置

摘要

With the development of rice harvesting with large scale in China , high-efficiency of combine is more and more important.In order to satisfy the urgent demand of high-efficiency combine ,the overall structure of a new crawler-type combine with a feed rate of 7~9 kg/s was proposed and the combinational threshing and separating unit of oblique tangential-longitudinal combine was designed .The design focused on the designing process of structural and operational parameters of tansverse tangential cylinder tangential concave , conical spiral transition device , axial rotor and concave . And determine the working parameters .Field test showed that the total loss was 0.79%, the damage rate was 0.3%and the impurity content was 0.8%,when the feed rate was 8.57kg/s,which met the demands of the design .%为满足我国现阶段高产水稻的高效收获要求，提出了一种喂入量为7～9 kg 的履带式新型斜置切纵流双滚筒联合收获机的总体配置方案，论述了斜置切纵流双滚筒脱粒分离装置中切流脱粒滚筒、切流凹板筛、锥形螺旋过渡喂入装置、斜置纵轴流滚筒和纵轴流凹板筛的结构设计，确定了各个工作部件的工作参数。田间试验表明：该装置在收获水稻喂入量为8．57kg／s时，脱粒损失率为0．79％，籽粒破碎率为0．1％，各项性能指标均达到设计要求；同时，在喂入量增大时，该装置各工作部件功耗较为平稳，适应性较强。