最新V带轮设计说明书.docx

精品资料V带轮设计说明书.机械设计基础课程设计说明书设计题目 V带传动设计 设计组员 李亚霖、吴郅君、刘玲玲、张乐、万学赟 院 系 机电工程学院 专 业 电气工程及其自动化 指导教师 冯原 目录一 设计任务书··········································································································3二、 V带传动设计1.确定计算功率········································································································32.选择V带的带型···································································································33.确定V带的基准直径并验算带速·····································································34.确定V带的中心距和基准长度····································································45.验算小带轮上的包角········································································46.计算带的根数·········································································57.计算带对轴的作用力··············································································5三、 V带轮结构设计1.V带轮的材料··························································································52.V带轮的结构形式·······························································63.V带轮的槽型··············································································64.V带轮的尺寸······································································6四、 小带轮装配图····································································································6五、 参考文献··············································································································6一、 设计任务书1.题目：设计由电动机驱动鼓风机的V带传动。如图1所示为传动机结构简图，主动带轮1直接装在电动机轴上，从动轮2装在鼓风机轴上，两带轮中心的水平距离a约于大带轮直径d2的2倍。图12.V带传动设计的原始数据如下：作业题号鼓风机主轴转速n2电动机型号额定功率p/kw满载转速n1主轴直径D/mm主轴轴长E/mm一天工作时间/h5650Y160M-411146042110163.V带传动设计内容选择V带的型号、长度、根数；V带轮的直径、包角、带速；V带传动的中心距，V带对轴的作用力等。二、V带传动设计设计计算及说明1.确定计算功率由参考文献1表6-4查得工作情况系数，故 2.选择V带的带型根据,由参考资料1表6-8选用B型带。3.确定带轮的基准直径并验算带速1) 初选小带轮基准直径由参考资料1表6-5和表6-6，取小带轮的基准直径。 2) 验算带速v 因为5m/s<v<25m/s,故带速合适。3) 计算大带轮基准直径按表6-6，取。4）计算大带轮转速n2误差小于5%，可行。4.确定V带的中心距a和基准长度L 1)初步选取。 2)计算所需的基准长度由参考资料1表6-2选带的基准长度。 3)计算实际中心距a5.验算小带轮上的包角小轮包角适合。 6.计算V带的根数z由表6-3 传动比 由表6-7 由表6-2查得 由表6-8查得 取Z=5根。7.计算带对轴的作用力预紧力查表计算带对轴的作用力三、V带轮结构设计 1.V带轮的材料 选用HT2002.V带轮的结构形式由于，因此大带轮选择轮幅式结构，小带轮采用腹板式结构。3.V带轮的尺寸计算 4.V带轮轮槽尺寸5.主动V带轮的结构尺寸见附图。四、小带轮装配图见附图五、参考文献参考文献1机械设计基础（第四版） 高等教育出版社 参考文献2机械设课程设计 高等教育出版社