混合轮系.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,7-4,混合轮系传动比的计算,1,2,2,3,4,5,6,H,步骤,:,1.,区分轮系,:,2.,列相应轮系传,动比公式；,3.,找相关条件；,4.,联立求解未知,量。,如图示轮系,:,定轴轮系,:,基本周转轮系,:,相关条件,:,将,(1),(2),(3),式联立,求解。,7-4,混合轮系传动比的计算,例一、区分轮系练习,1.,1,2,3,2,4,3,H,4,5,定 轴 轮 系：,1,2,3,2,4,3,H,4,5,基本周转轮系,:,3,2.,2,2,1,3,4,H,周转轮系,:,2,2,1,4,H,2,2,3,4,H,2,1,3,H,3.,1,2,3,4,5,H,6,7,定轴轮系：,1,2,6,7,周转轮系：,3,4,5,H,1,2,2,3,3,4,5,解：,1.,区分轮系：,定轴轮系：,3,4,5,周转轮系：,1,2,2,3,5,2.,分别列传动比公式：,(1),(2),3.,相关条件：,4.,联立求解：,由,(1),式：,代入,(2),式得：,1,2,2,3,3,5,4,解：,定轴轮系：,1,2,5,周转轮系：,2,3,3,5,4,(1),(2),例三、已知：图示轮系中,方向如图所示。求：,(3),(3),由,(1),式得：,由,(2),式得：,1,1,2,3,4,5,6,7,H,A,H,1,1,2,3,4,5,6,7,H,A,H,解：,1),由同心条件,2),定轴轮系：,1,A,周转轮系,:,5,6,7,H,1,2,3,4,H,由,(2),得：,1,1,2,3,4,5,6,7,H,A,H,