【摘要】 <正> 分离机构是谷物康拜因上最薄弱的一环。喂入量稍有增加和谷物状况稍稍恶化,分离不净的損失即会增加。 平台式逐稭篩在中小型直流式康拜因上普遍采用着,它的結构簡单、輕巧,并具有相当的分离能力,是一种应予重視的分离机构,但是迄今人們对其工作过程实质的研究还很少。 西德牵引式克拉斯 (Claas) 康拜因上的平台式逐稽篩在我国的試驗中显示出較好的工作性能。为了改进設計使其进一步适应我国特点,需要掌握各个因素对分离性能影响的規更多还原

【Abstract】 Based upon an analysis of the kinematical process of the straw layer on the surface of a straw rack, a fundamental equation for dete mining the magnitude of the period of its free-falling motion （△t, △t=t₃-t₁） dependent upon the inclination of the rack surface （α）, the frequency （n）, amplitude （2r）,and direction of oscillation （β） is obtained as follows:This artical also gives the theoretical condition ensuring the maximum value of △t, i. e.Results of analysis of the process of typical straw rack mounted on the German trailed grain combine marked "Claas" by the method above mentioned are also given.更多还原