设计题目设计驱动离心鼓风机的V带传动机械院(系)车辆工程专业班级093学号设计人指导教师完成日期2010年5月22日目录一.设计任务书·······················································11.总体布置····································································12.原始数据····································································13.设计要求····································································14.设计内容····································································1二.V带传动的设计··················································1三.V带的结构设计···················································41.带轮的材料··································································42.带轮的结构形式······························································53.带轮的基本结构尺寸··························································5四.主动带轮装配简图设计·············································61.圆头普通平键设计····························································62.轴端挡圈设计································································63.螺栓设计····································································64.弹簧垫圈····································································6五.小带轮装配图····················································6六.设计小结························································6七.参考资料·························································7设计计算及说明结果一、设计任务书1.总体布置主动轮1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等于大带轮直径的2倍。简图如右图所示2.原始数据电动机型号:Y112M-4鼓风机转速n2(r/min):1440一天工作时间(h):163.设计要求(1)绘制小带轮装配图一张(2)编写设计计算说明书一份4.设计内容(1)V带传动的设计带的型号、根数、长度,带轮尺寸,带传动中心距,作用下周上的压力(2)V带轮的结构设计带轮的材料、结构型式,计算基本结构尺寸等。二、V带传动的设计由已知的电动机型号Y112M-4,查参,可得电动机的额定功率P=4kw,满载转速=1440r/min,传动装置应有的传动比i=1.92,每天工作16小时1.确定计算功率Pc由参考表9-6(p230)查得工作情况系数KA=1.1,故2.选择V带的带型根据Pc和小带轮转速由图9-11(P229)选用A型。3.确定带轮的基准直径并验算带速v(1)初选小带轮的基准直径dd1,由P230的表9-7,可取小带轮的基准直...