设计简介
麦弗逊悬架的设计
摘要：为了提高汽车行驶的平顺性和稳定性, 本课题进行了产品名称为QF1020货车前后悬架的设计。通过对课题内容的分析, 并结合相关设计手册,进行了方案设计与比较, 设计了麦弗逊前悬架, 钢板弹簧后悬架。在设计中，首先，分析了麦弗逊独立悬架的组成和功用；其次，进行悬架的上各零部件强度的校核；第三，详细考虑各部件之间的连接关系；最后在此基础上进行悬架自然振动频率，悬架静挠度和动挠度以及悬架弹性特性的计算。在分析麦弗逊悬架的组成和作用以及各零部件的尺寸确定的基础上，再利用CAD软件进行二维制图。此次的设计进行了准确的计算和详细的结构分析，为麦弗逊悬架的结构优化提供了依据，从而在运动学和动力学方面提高汽车的性能。
关键词：麦弗逊悬架；汽车；设计；
The design of McPherson suspension
Abstract：In order to enhance the automobile smooth running and the stability, This topic has carried on the suspension design of the Product Name of QF1020 vehicle. Through analyzing the topic content, and combine the correlation design handbook, carried on the plan to design and to compare, the McPherson strut front suspension , the leaf spring behind suspension and trapezium’s frame are designed. This thesis first analyzes the consists and function of the McPherson suspension in the design, then check the up and down of the suspension, Third, the various components of the link between relations is considered the suspension on the basis of the natural vibration frequency is calculated as well as static suspension deflection and dynamic deflection and elastic characteristics of the suspension terms at last. On the basis of Analysis of the composition and role of the size of the components in the two suspension, then to use CAD software, 2D software mapping .We make an accurate and detailed structural analysis on the design, which provides the reference for optimal design of the suspension. The approach can enhance the performance of the McPherson suspension and leaf spring behind suspension.
Keyword: McPherson suspension; Motor vehicle; Design;
目录
1前言 1
2 总体方案论证 3
2.1 非独立悬架与独立悬架 3
2.2 独立悬架结构形式分析 3
2.3 悬架选择的方案确定 3
3 前后悬架系统的主要参数的确定及对整车性能的影响 5
3.1 悬架静挠度 5
3.2 悬架动挠度 6
3.3悬架弹性特性 6
3.4 前悬架主销侧倾角与后倾角 7
4弹性元件的设计 9
4.1螺旋弹簧的设计 9
4.2钢板弹簧的设计 9
4.2.1钢板弹簧的布置方案 9
4.2.2钢板弹簧主要参数的确定 9
4.2.3钢板弹簧各片长度的确定 12
4.2.4钢板许用静弯曲应力验算 13
4.2.5钢板弹簧总成在自由状态下的弧高及曲率半径计算 14
4.2.6钢板弹簧总成弧高的核算 15
4.2.7钢板弹簧强度验算 16
5减震器机构类型及主要参数的选择计算 18
5.1减震器的分类 18
5.2相对阻尼系数 18
5.3减震器阻尼系数的确定 19
5.4最大卸荷力的确定 20
5.5筒式减震器工作缸直径的确定 20
6 结论 21
参考文献 22
致 谢 23
摘要：为了提高汽车行驶的平顺性和稳定性, 本课题进行了产品名称为QF1020货车前后悬架的设计。通过对课题内容的分析, 并结合相关设计手册,进行了方案设计与比较, 设计了麦弗逊前悬架, 钢板弹簧后悬架。在设计中，首先，分析了麦弗逊独立悬架的组成和功用；其次，进行悬架的上各零部件强度的校核；第三，详细考虑各部件之间的连接关系；最后在此基础上进行悬架自然振动频率，悬架静挠度和动挠度以及悬架弹性特性的计算。在分析麦弗逊悬架的组成和作用以及各零部件的尺寸确定的基础上，再利用CAD软件进行二维制图。此次的设计进行了准确的计算和详细的结构分析，为麦弗逊悬架的结构优化提供了依据，从而在运动学和动力学方面提高汽车的性能。
关键词：麦弗逊悬架；汽车；设计；
The design of McPherson suspension
Abstract：In order to enhance the automobile smooth running and the stability, This topic has carried on the suspension design of the Product Name of QF1020 vehicle. Through analyzing the topic content, and combine the correlation design handbook, carried on the plan to design and to compare, the McPherson strut front suspension , the leaf spring behind suspension and trapezium’s frame are designed. This thesis first analyzes the consists and function of the McPherson suspension in the design, then check the up and down of the suspension, Third, the various components of the link between relations is considered the suspension on the basis of the natural vibration frequency is calculated as well as static suspension deflection and dynamic deflection and elastic characteristics of the suspension terms at last. On the basis of Analysis of the composition and role of the size of the components in the two suspension, then to use CAD software, 2D software mapping .We make an accurate and detailed structural analysis on the design, which provides the reference for optimal design of the suspension. The approach can enhance the performance of the McPherson suspension and leaf spring behind suspension.
Keyword: McPherson suspension; Motor vehicle; Design;
目录
1前言 1
2 总体方案论证 3
2.1 非独立悬架与独立悬架 3
2.2 独立悬架结构形式分析 3
2.3 悬架选择的方案确定 3
3 前后悬架系统的主要参数的确定及对整车性能的影响 5
3.1 悬架静挠度 5
3.2 悬架动挠度 6
3.3悬架弹性特性 6
3.4 前悬架主销侧倾角与后倾角 7
4弹性元件的设计 9
4.1螺旋弹簧的设计 9
4.2钢板弹簧的设计 9
4.2.1钢板弹簧的布置方案 9
4.2.2钢板弹簧主要参数的确定 9
4.2.3钢板弹簧各片长度的确定 12
4.2.4钢板许用静弯曲应力验算 13
4.2.5钢板弹簧总成在自由状态下的弧高及曲率半径计算 14
4.2.6钢板弹簧总成弧高的核算 15
4.2.7钢板弹簧强度验算 16
5减震器机构类型及主要参数的选择计算 18
5.1减震器的分类 18
5.2相对阻尼系数 18
5.3减震器阻尼系数的确定 19
5.4最大卸荷力的确定 20
5.5筒式减震器工作缸直径的确定 20
6 结论 21
参考文献 22
致 谢 23
