机械设计课程设计说明书

机械设计课程设计

说明书

课题名称： 带式运输机传动装置的设计

专业班级： 机制中美班 学生学号： 1403190333 学生姓名： 猜到算你牛 学生成绩： 指导教师： 秦襄培

课题工作时间： 2016年12月12日至 2015年12月30日

武汉工程大学教务处

目 录

第一章 设计任务与要求···············································1

1.1设计带式运输机中二级圆柱齿轮减速器······························1

第二章 方案选择传动装置总体设计································· 2

2.1传动装置方案的选择 ·············································2 2.2 选择电动机（Y系列三相交流异步电动机）·························· 4 2.3 传动装置的总传动比及其分配 ···································5 2.4传动装置的运动和动力参数········································5

第三章 V带的设计 ···················································7

3.1传动装置的动力参数··············································7 第四章 双级斜齿圆柱齿轮的设计····································10

4.1 高速级和低速级斜齿圆柱齿轮传动 ···································10 4.2 按齿面接触强度计算···············································10 4.3按齿根弯曲强度计算···············································12

第五章 轴的设计计算 ··················································16

5 .1 高速轴的设计 ···················································16 5.2根据轴向定位求轴各段直径与长度···································17 5.3 低速轴的设计·····················································18 5.4 高速轴的设计·····················································18

第六章 箱体及其附件的结构设计 ····································20

6.1减速器零件的位置尺寸·············································20 6.2减速器润滑与密封 ·················································20 6.3箱体的尺寸设计···················································20 6.4减速器附件的结构设计·············································21 设计总结····························································23 参考文献····························································24

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第一章

设计任务与要求

1.1设计带式运输机中二级圆柱齿轮减速器

图1-1 带式运输机原理图 ? 工作环境：一般条件，通风良好

? 载荷特性：连续工作，近乎平稳，正向运转 ? 使用期限：8年，每日两班制工作 ? 卷筒效率：??0.96 ? 运输带允许误差：?5% ? 生产规模：成批生产 表1-1参数： D V T

320 mm 0.75m/s 430 N?m

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第二章

方案选择与传动装置整体设计

2.1传动装置方案的选择

1.拟定传动方案

首先估计传动装置的总体传动范围：由卷筒的圆周速度V可计算卷筒的转速 nw?60?1000?v60?1000?0.75?rpm?50.9rpm?51rpm

?D3.14?320置

一般选用同步转轴为1000rpm或1500rpm的电动机作为原动机，因此传动装总传动比为20或30。

根据总传动比数值，初定一级外传动件加二级减速器为主的传动方案。

资料[2]表2-2列出了常用减速器的类型好特点，根据设计任务给定的条件好典型结构，拟定用展开式二级圆柱齿轮减速器，为增加传动平稳性，减小减速器装置尺寸，二级圆柱齿轮均采用斜齿轮。

一级外传动件有开式齿轮传动、带传动、链传动可供选择，考虑各类传动装置的特点以及合理布置传动机构顺序的原则，列出以下几种方案进行比较 2.方案一

图2-1展开式

1－电动机轴；2—电动机；3—带传动中间轴；4—高速轴；5—高速齿轮传动

6—中间轴；7—低速齿轮传动；8—低速轴；9—工作机；

方案一 总传动比较大，结构简单，但要求轴有较大的刚度。

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