b650带式输送机驱动装置1

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1、重庆工商大学2009届毕业“论文”设计题目：B650带式输送机驱动装置子题目：轴系设计计算专业：机械设计及自动化姓名：×××班级：×××指导教师：王永安起止日期：2012年1月18日至2012年5月18日I目录1设计题目·································································12工况条件·····························································13减速器类型····································

2、································14动力参数·······························································15轴系的设计计算·····························································25.1高速轴的设计计算··················································25.2中间轴的设计计算········································

3、············45.3低速轴的设计计算·························································55.4轴承的设计························································75.5键的设计计算························································106轴工作图·································································1

4、27参考文献·······························································12I1.设计题目1.1主标题：B650带式输送机驱动装置设计。1.2副标题：轴系设计计算2.工况条件：B650带式输送机由电动机驱动，传动滚筒驱动合力F=6500N，输送机带速υ=2.5m/s，输送机传动滚筒直径D=500mm（包胶），输送机工作寿命10年（每天工作8小时，每年工作300天），单向运转，有粉尘，室内工作。3.减速器类型采用锥-斜齿轮直角轴两级齿轮减速器。4.动力参数4.1驱动装置所需的动力参数列于下表：轴编号电

5、动机减速器传动滚筒O轴Ⅰ轴Ⅱ轴Ⅲ轴Ⅳ轴转速r/minn0=970n1=970n2=381.89n3=95.49n4=95.49功率kWP0=20.2P1=20.06P2=18.86P3=17.38P4=17.09转矩N·mT0=60.23T1=59.78T2=338.82T3=1378.2T4=1709.2两轴连接联轴器齿轮齿轮联轴器传动比ii01=1i12=2.54i23=4i34=1传动效率ηη0=0.99η1=0.94η2=0.96η3=0.98124.2齿轮受力情况列于下表：齿轮位置Ⅰ轴Ⅱ轴Ⅲ轴z1=19z2=66z3=21z4=84圆周力Ft/NFt1=

6、1592.5Ft2=1592.5Ft3=7879.5Ft4=7879.5径向力Fr/NFr1=539.3Fr2=539.3Fr3=2936.2Fr4=2936.2轴向力Fa/NFa1=212.4Fa2=212.4Fa3=1729.5Fa4=1729.5法向力Fn/NFn1=1694.7Fn2=1694.7Fn3=8584.8Fn4=8584.85.轴系的设计计算5.1高速轴的设计计算1）已知条件高速轴（轴I）传递功率P1=20.06kW，n1=970r/min，小齿轮大端分度圆直径d1=91mm，齿宽中点处分度圆直径dm1=（1-0.5ΦR）d1=75.075mm

7、，齿轮宽度b=60mm。2）轴的材料选择选用45号钢，调制处理，热处理硬度HB217~255。3）轴的强度计算轴的强度计算均按照实心轴进行计算（1）按扭转强度计算d1≥=A=115×=31.56mm式中：T1—高速轴传递的扭矩，T1=59.78N.m；[τ]—许用切应力，查表5-1-7得[τ]=35MPa，A=11512按照表5-1-8，该轴增大后的直径31.56+31.56×5%=33.14mm（2）按弯矩合成强度计算校核σ=≤[σ-1]d=式中：σ—轴截面的工作应力，MPaM—轴截面的合成弯矩，N.mmα—脉动循环系数，α=0.6T—轴截面的转矩，N.mm[σ

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