机械设计课程设计-卷扬机传动装置中的二级圆柱齿轮减速器

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1、机械设计基础课程设计说明书设计题目卷扬机传动装置中的二级圆柱齿轮减速器院(系)机电工程学院专业机械设计与制造班级机制09-2班学号设计人指导教师完成日期2010年12月29日广东石油化工学院38目　录一、选择电动机·····················································2二、传动比分配·····················································3三、圆柱齿轮传动设计···················

2、····························6（一）、高速齿轮设计·············································6（二）、低速齿轮设计·············································9四、减速器轴的设计··············································13（一）、中间轴的设计···········································

3、·13（二）、输入轴的设计············································19（三）、输出轴设计··············································24五、轴承寿命的校核·················································28（一)、低速轴轴承的寿命计算··················28（二）、高速轴轴承的寿命计算38·························

4、···········30（三）、中间轴轴承的寿面计算····································31六、减速器键联接的设计·······················32七、联轴器类型选择··············································35八、减速器的润滑···················································36九、总结····························

5、·······························37十、参考文献·······················································37一、选择电动机1.工作机的功率：382.查各零件传动效率值：联轴器（弹性），轴承，齿轮，卷筒则3.电动机输出功率：4.工作机转速：电动机转速的可选范围：取10005.选择电动机：查表19-1，选电动机型号为Y132S—6，同步转速1000r/min，满载转速960r/min，额定功率为3Kw二、传动比分配1.

6、传动比分配：38取，则2.各轴转速：Ⅰ轴：Ⅱ轴：Ⅲ轴：3.各轴输入功率：4.电机输出转矩：5.各轴的转矩：386．误差：传动装置的运动和动力参数：轴名功率P/Kw扭转T/Nmm转速n/r/min传动比i效率η/%电机轴2.6125964960199Ⅰ轴2.58257049605.697Ⅱ轴2.50171.434.397Ⅲ轴2.4339.87卷筒轴2.3839.87199三、圆柱齿轮传动设计高速齿轮的设计1.齿轮材料、精度的选择及热处理方法：由于齿轮所传递的功率不大，故小齿轮选用40Cr调质，齿面硬

7、度为217～286HBS，=650Mpa，；大齿轮选用45钢调质，齿面硬度为197～286HBS，=550Mpa，;齿轮均为软齿面，闭式。选用8级精度。2.许用应力的确定：查表11-5得382.齿面接触强度设计：取K=1.5（表11-3），齿宽系数=0.8（表11-6），（表11-4）,,初选螺旋角β=12°则螺旋角系数小齿轮的转矩：取小齿轮齿数Z1=32，则大齿轮齿数Z2=Z1×i1=32×5.6179，故实际传动比为：38协调设计参数：齿轮法面模数mn=1.5mm；取中心距a=165mm螺旋角

8、：4.计算分度圆直径和齿宽：小齿轮分度圆直径：大齿轮分度圆直径：齿宽：b=d1=0.8×50.05=40.04mm取大齿轮齿宽b2=45mm，则小齿轮齿宽b1=50mm。5.齿轮弯曲强度校核：38查图11-8得，查图11-9得，6.齿轮的圆周速度：对照表11-2可知选用8级精度是合宜的。低速齿轮的设计1.齿轮材料、精度的选择及热处理方法：由于齿轮所传递的功率不大，故小齿轮选用40Cr调质，齿面硬度为217～286HBS，=650Mpa，；大齿轮选用45钢调质，齿面硬度为197～28