BJ1041型载货汽车设计（变速器总成设计）

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BJ1041型载货汽车设计（变速器总成设计）目 录
第-章 前言 ······························································ 1
§1.1 手动变速器（MT） ··············································1
§1.2 自动变速器（AT） ··············································2
§1.3 自动/手动变速器（AMT） ·····································2
§1.4 无级变速器（CVT） ············································3
第二章 变速器的结构分析与形式选择 ······························ 4
§2.1 概述 ······························································ 4
§2.2 变速器的总体结构 ············································ 5
§2.3 变速器传动机构布置方案分析 ······························ 6
§2.4 变速器零、部件的结构分析与型式选择 · ··············· 12
第三章 变速器主要参数的选择 ····································· 17
§3.1 变速器的传动比 ·············································· 17
§3.1.1 挡数 ······················································· 17
§3.1.2 轮胎半径的选择 ········································ 18
§3.1.3 主减速器传动比 ········································ 18
§3.1.4 分配各挡传动比 ········································ 19
§3.1.5 初定中心距 ·············································· 20
§3.1.6 变速器的外形尺寸 ····································· 21
§3.2 齿轮参数 ······················································· 21
§3.2.1 齿轮模数 ················································· 21
§3.2.2 压力角及螺旋角 ········································ 22
§3.2.3 齿轮齿宽 ················································· 24
§3.2.4 齿顶高系数 ·············································· 25
§3.3 各挡齿轮齿数的分配 ········································ 26
§3.3.1 确定-挡齿轮的齿数 ·································· 26
§3.3.2 确定常啮合传动齿轮副的齿数 ······················ 26
§3.3.3 确定其他各挡的齿数 ·································· 27
§3.3.4 确定倒挡齿轮齿数 ····································· 27

第四章 变速器齿轮的设计计算 · ··································· 29
§4.1 齿轮的损坏形式 ·············································· 29
§4.2 齿轮的材料选择 ·············································· 29
§4.3 轮齿强度计算 ················································· 30
§4.3.1 轮齿弯曲强度计算 ····································· 30
§4.3.2 轮齿接触应力计算 ····································· 35
第五章 变速器轴的设计计算 ········································ 37
§5.1 初选轴的直径 ················································· 37
§5.2 轴的强度验算 ················································· 38
§5.2.1 轴的刚度验算 ················································· 38
§5.2.2 轴的强度验算 ··········································· 41
第六章 变速器轴承寿命计算 ········································ 45
§6.1 变速器轴承 ···················································· 45
§6.2 第二轴上的轴承寿命计算 ····································· 46
第七章 键的校核计算 ·················································· 49
§7.1 键的选择 · ····················································· 49
§7.2 键的校核 ···························· ····························· 49
第八章 同步器设计 ·· ················································· 50
§8.1 同步器主要零件材料的选择 ······························· 50
§8.2 锁环式同步器结构 ··········································· 51
§8.3 锁环式同步器的工作原理 ·································· 51
§8.4 摩擦力矩的计算 · ············································ 52
§8.5 锁环式同步器主要尺寸的确定 ···························· 52
§8.5.1 摩擦锥面上的螺纹槽 · ································ 52
§8.5.2 锥面半锥角 · ············································ 53
§8.5.3 摩擦锥面平均半径 ····································· 53
§8.5.4 锥面工作长度 ··········································· 53
§8.5.5 锁止角 ···················································· 54
第九章 变速器操纵机构 ··············································· 55
§9.1 操纵方式 · ····················································· 55
§9.2 锁止装置 · ····················································· 56
第十章 结论 ······························································ 60
参考文献 · ································································· 61
致 谢 ······································································· 62