课程设计
设 计 题 目:电动卷扬机传动装置的设计
单 位（系别）： 自动化系
学生姓名：
专业： 机械设计制造及其自动化
班级：
学号：
指导教师：
邮电大学移通学院机械设计课程设计任务书
课程设计题目 电动卷扬机传动装置的设计 学生姓名系别 自动化 专业 机械设计制造及自动化 班级
指导教师职称联系电话
教师单位下任务日期
目录
前言·······································································5
第一章电动机的选择·························································6
第一节电动卷扬机的工作条件················································6
第二节电动机的选取·······················································7
第二章传动比的计算··························································8
第一节总传动比的计算······················································8
第二节传动比的分配························································8
第三节计算传动装置的运动和动力参数········································9
一、轴的转速······························································9
二、各轴输入功率························································10
三、轴的输入转矩······················································10
第三章齿轮的设计····························································5
第一节材料的选取··························································5
第二节高速轴的传动齿轮设计················································5
一、计算小齿轮直径························································.5
二、调整小齿轮分度圆直径··················································6
三、按齿根圆弯曲疲劳强度设计··············································8
四、几何尺寸计算·······················································9
五、校核······························································9
第三节低速级传动齿轮设计················································20
一、计算小齿轮直径·······················································9
二、调整小齿轮分度圆直径·················································9
三、按齿根圆弯曲疲劳强度设计············································...10
四、几何尺寸计算························································11
五、校核································································13
第四节开式传动齿轮设计··················································13
一、计算小齿轮直径······················································.14
二、调整小齿轮分度圆直径····································14
三、按齿根圆弯曲疲劳强度设计································15
四、几何尺寸计算············································27
五、校核····················································29
第五节齿轮的结构设计·······································30
第四章轴的设计·············································31
第一节减速箱中间轴的设计···································31
一、轴的材料选取········································31
二、轴的初步计算········································31
三、轴的结构设计········································35
四、许用弯曲应力校核····································37
第二节高速轴的设计·········································38
一、材料的选取··········································38
二、估算直径············································38
第三节低速轴的设计········································39
一、材料的选取·········································39
二、估算直径···········································39
第五章平键连接的选用和计算································40
第六章箱体及附属零件的结构设计····························41
一、箱体尺寸············································41
二、起吊装置············································42
三、窥视孔、窥视盖······································42
四、放油孔和和螺塞M20··································42
五、通气螺塞M20········································42
六、游标尺··············································42
结论·····················································43 致谢·····················································44 参考文献···················································45 附录·····················································46
前言 卷扬机，用卷筒缠绕钢丝绳或链条提升或牵引重物的轻小型起重设备，又称绞车。卷扬机可以垂直提升、水平或倾斜拽引重物。卷扬机分为手动卷扬机、电动卷扬机及液压卷扬机三种。现在以电动卷扬机为主。可单独使用，也可作起重、筑路和矿井提升等机械中的组成部件，因操作简单、绕绳量大、移置方便而广泛应用。主要运用于建筑、水利工程、林业、矿山、码头等的物料升降或平拖。是起重垂直运输机械的重要组成部分，配合并架，滑轮组等辅助设备，用来提升物料、安装设备的作用。由于它结构简单、搬运安装灵活、操作方便、维护保养简单、使用成本低对作业环境适应能力强等特点，被广泛应用。卷扬机是一种常见的提升设备，其主要是用电动机作为原动机。由于电动机输出的转速远远大于卷扬机中滚筒的转速，故必须设计减速的传动装置。传动装置的设计有多种多样，如皮带减速器、链条减速器、齿轮减速器、涡轮蜗杆减速器、二级齿轮减速器等等。通过合理的设计传动装置，使的卷扬机能够在特定的工作环境下满足正常的工作要求。
第一章 电动机的选择
第一节 卷扬机的工作要求
卷扬机传动装置。使用期八年，大修期三年，两班制工作。卷扬机卷筒速度的容许误差±5%，过载转矩不超过正常转矩的1.5倍。由一般生产厂中小批量生产。
第二节 电动机的选取类型
按照工作要求和条件，选取三相异步电动机，封闭式结构，电压380V，YZR系列。
第三节 选取电动机的容量
1.卷扬机所需功率：
F×V13500×0.21PW===2.835KW 2.初估电动机额定功率：
PWPd= 总
由电动机传送至卷扬机的传动效率为 ： η总=η31η42η3η4=0.973×0.994×0.97×0.96=0.8164 式中： η1—−每级齿轮传动效率
η2——每对滚动轴承效率
η3——联轴器效率
η4——卷筒效率
故
PW2.835Pd===3.47kw 总
第四节 确定电动机的转速
由负载持续率Jc=40%，根据功率，转速查文献表，综合选定YZR132MB电动机，其主要参数如下：
第二章传动比的计算
第一节总传动比的计算
卷扬机卷筒转速：
nw= 60×1000×0.21 ∕(3.14×400)=10.03r∕min 总传动比：
i⋅=nm∕nw=908∕10.03=90.528
第二节分配传动比的计算
由文献可得，两级圆柱齿轮加速器传动比为8~60 i’=iai0（ia，i0分别为减速器、开式齿轮的传动比） 取ia=30，则开式齿轮传动比i0=
i‘ia=90.52830=3.017
第三节分配减速器的各级传动比
按展开式布置，考虑两级齿轮润滑问题，两级大齿轮应有相近浸油深度。参考式i1= （1.2~1.4）ia
i1=（1.3~1.4）i2
总传动比ia=30，经计算高速级传动比i1=6.2
低速级传动比i2=4.84
因闭式传动取高速级小齿轮齿数 Z1=25
大齿轮齿数 Z2=Z1i1=25×6.2=155
齿数比U1= Z2 Z1=155 25=6.2
低速级小齿轮齿数 Z3=28
大齿轮齿数 Z4= Z3i2=28×4.84=136
齿数比U2= Z4 Z3=136 28=4.86
闭式实际总传动比if=U2U1=6.2×4.86=30.26
开式齿轮小齿轮齿数 Z5=20
大齿轮齿数 Z6= Z5i0=20×3.017=61
齿数比U3= Z6∕ Z5=61∕20=3.05
实际总传动比i=U1U2U3=6.2×4.86×3.05=92.3 核验工作机卷筒的转速误差：
卷筒实际转速nw，=nmi=908∕92.3=9.84
转速误差△nw=
要求。 nw−n⋅nw合乎 = 10.03−9.84 10.03=2%
第四节计算传动装置的运动和动力参数
一、各轴功率
高速轴轴I输入功率：P1=P η3η2=3.7×0.97×0.99=3.55kw
中间轴轴II输入功率：P2=P η3η2η1=3.55×0.97=3.45kw 低速轴轴III输入功率：P3=P η3η22η12=3.45×0.97×0.99=3.31k 轴IV输入功率：P3=P η3η23η13 η4=3.05kw
η1—−每级齿轮传动效率 η2——每对滚动轴承效率
η3——联轴器效率 η4——卷筒效率
二、各轴转速
高速轴轴I：n=n1m= 908(r/min) 中间轴轴II：n2=n1/u1=908/6.227=146.5(r/min) 低速轴轴III：n3=n1/if=908/30.26=30(r/min) 轴IV：n4=n1/i=908/92.3=9.87(r/min) 所以卷筒实际转速为：9.87(r/min)。
三、各轴转矩计算
p3.55=37.3N.m 高速轴轴I：T=9550.=9550⨯908n
p=9550⨯3.45=224.9N.m中间轴轴II：T=9550. 146.5n1112
2
2
课程设计
设 计 题 目:电动卷扬机传动装置的设计
单 位（系别）： 自动化系
学生姓名：
专业： 机械设计制造及其自动化
班级：
学号：
指导教师：
邮电大学移通学院机械设计课程设计任务书
课程设计题目 电动卷扬机传动装置的设计 学生姓名系别 自动化 专业 机械设计制造及自动化 班级
指导教师职称联系电话
教师单位下任务日期
目录
前言·······································································5
第一章电动机的选择·························································6
第一节电动卷扬机的工作条件················································6
第二节电动机的选取·······················································7
第二章传动比的计算··························································8
第一节总传动比的计算······················································8
第二节传动比的分配························································8
第三节计算传动装置的运动和动力参数········································9
一、轴的转速······························································9
二、各轴输入功率························································10
三、轴的输入转矩······················································10
第三章齿轮的设计····························································5
第一节材料的选取··························································5
第二节高速轴的传动齿轮设计················································5
一、计算小齿轮直径························································.5
二、调整小齿轮分度圆直径··················································6
三、按齿根圆弯曲疲劳强度设计··············································8
四、几何尺寸计算·······················································9
五、校核······························································9
第三节低速级传动齿轮设计················································20
一、计算小齿轮直径·······················································9
二、调整小齿轮分度圆直径·················································9
三、按齿根圆弯曲疲劳强度设计············································...10
四、几何尺寸计算························································11
五、校核································································13
第四节开式传动齿轮设计··················································13
一、计算小齿轮直径······················································.14
二、调整小齿轮分度圆直径····································14
三、按齿根圆弯曲疲劳强度设计································15
四、几何尺寸计算············································27
五、校核····················································29
第五节齿轮的结构设计·······································30
第四章轴的设计·············································31
第一节减速箱中间轴的设计···································31
一、轴的材料选取········································31
二、轴的初步计算········································31
三、轴的结构设计········································35
四、许用弯曲应力校核····································37
第二节高速轴的设计·········································38
一、材料的选取··········································38
二、估算直径············································38
第三节低速轴的设计········································39
一、材料的选取·········································39
二、估算直径···········································39
第五章平键连接的选用和计算································40
第六章箱体及附属零件的结构设计····························41
一、箱体尺寸············································41
二、起吊装置············································42
三、窥视孔、窥视盖······································42
四、放油孔和和螺塞M20··································42
五、通气螺塞M20········································42
六、游标尺··············································42
结论·····················································43 致谢·····················································44 参考文献···················································45 附录·····················································46
前言 卷扬机，用卷筒缠绕钢丝绳或链条提升或牵引重物的轻小型起重设备，又称绞车。卷扬机可以垂直提升、水平或倾斜拽引重物。卷扬机分为手动卷扬机、电动卷扬机及液压卷扬机三种。现在以电动卷扬机为主。可单独使用，也可作起重、筑路和矿井提升等机械中的组成部件，因操作简单、绕绳量大、移置方便而广泛应用。主要运用于建筑、水利工程、林业、矿山、码头等的物料升降或平拖。是起重垂直运输机械的重要组成部分，配合并架，滑轮组等辅助设备，用来提升物料、安装设备的作用。由于它结构简单、搬运安装灵活、操作方便、维护保养简单、使用成本低对作业环境适应能力强等特点，被广泛应用。卷扬机是一种常见的提升设备，其主要是用电动机作为原动机。由于电动机输出的转速远远大于卷扬机中滚筒的转速，故必须设计减速的传动装置。传动装置的设计有多种多样，如皮带减速器、链条减速器、齿轮减速器、涡轮蜗杆减速器、二级齿轮减速器等等。通过合理的设计传动装置，使的卷扬机能够在特定的工作环境下满足正常的工作要求。
第一章 电动机的选择
第一节 卷扬机的工作要求
卷扬机传动装置。使用期八年，大修期三年，两班制工作。卷扬机卷筒速度的容许误差±5%，过载转矩不超过正常转矩的1.5倍。由一般生产厂中小批量生产。
第二节 电动机的选取类型
按照工作要求和条件，选取三相异步电动机，封闭式结构，电压380V，YZR系列。
第三节 选取电动机的容量
1.卷扬机所需功率：
F×V13500×0.21PW===2.835KW 2.初估电动机额定功率：
PWPd= 总
由电动机传送至卷扬机的传动效率为 ： η总=η31η42η3η4=0.973×0.994×0.97×0.96=0.8164 式中： η1—−每级齿轮传动效率
η2——每对滚动轴承效率
η3——联轴器效率
η4——卷筒效率
故
PW2.835Pd===3.47kw 总
第四节 确定电动机的转速
由负载持续率Jc=40%，根据功率，转速查文献表，综合选定YZR132MB电动机，其主要参数如下：
第二章传动比的计算
第一节总传动比的计算
卷扬机卷筒转速：
nw= 60×1000×0.21 ∕(3.14×400)=10.03r∕min 总传动比：
i⋅=nm∕nw=908∕10.03=90.528
第二节分配传动比的计算
由文献可得，两级圆柱齿轮加速器传动比为8~60 i’=iai0（ia，i0分别为减速器、开式齿轮的传动比） 取ia=30，则开式齿轮传动比i0=
i‘ia=90.52830=3.017
第三节分配减速器的各级传动比
按展开式布置，考虑两级齿轮润滑问题，两级大齿轮应有相近浸油深度。参考式i1= （1.2~1.4）ia
i1=（1.3~1.4）i2
总传动比ia=30，经计算高速级传动比i1=6.2
低速级传动比i2=4.84
因闭式传动取高速级小齿轮齿数 Z1=25
大齿轮齿数 Z2=Z1i1=25×6.2=155
齿数比U1= Z2 Z1=155 25=6.2
低速级小齿轮齿数 Z3=28
大齿轮齿数 Z4= Z3i2=28×4.84=136
齿数比U2= Z4 Z3=136 28=4.86
闭式实际总传动比if=U2U1=6.2×4.86=30.26
开式齿轮小齿轮齿数 Z5=20
大齿轮齿数 Z6= Z5i0=20×3.017=61
齿数比U3= Z6∕ Z5=61∕20=3.05
实际总传动比i=U1U2U3=6.2×4.86×3.05=92.3 核验工作机卷筒的转速误差：
卷筒实际转速nw，=nmi=908∕92.3=9.84
转速误差△nw=
要求。 nw−n⋅nw合乎 = 10.03−9.84 10.03=2%
第四节计算传动装置的运动和动力参数
一、各轴功率
高速轴轴I输入功率：P1=P η3η2=3.7×0.97×0.99=3.55kw
中间轴轴II输入功率：P2=P η3η2η1=3.55×0.97=3.45kw 低速轴轴III输入功率：P3=P η3η22η12=3.45×0.97×0.99=3.31k 轴IV输入功率：P3=P η3η23η13 η4=3.05kw
η1—−每级齿轮传动效率 η2——每对滚动轴承效率
η3——联轴器效率 η4——卷筒效率
二、各轴转速
高速轴轴I：n=n1m= 908(r/min) 中间轴轴II：n2=n1/u1=908/6.227=146.5(r/min) 低速轴轴III：n3=n1/if=908/30.26=30(r/min) 轴IV：n4=n1/i=908/92.3=9.87(r/min) 所以卷筒实际转速为：9.87(r/min)。
三、各轴转矩计算
p3.55=37.3N.m 高速轴轴I：T=9550.=9550⨯908n
p=9550⨯3.45=224.9N.m中间轴轴II：T=9550. 146.5n1112
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