商用汽车后悬架设计ppt

<p>商用汽车后悬架设计,商用车基本参数,额定装载质量5000KG &nbsp; 最大总质量 8700KG 轴荷分配空载 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;前：后 &nbsp;52:48满载 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;前：后 &nbsp;32:68满载校核后 &nbsp; &nbsp; &nbsp; 前：后 &nbsp;33：:67质心位置：高度：空载 &nbsp;793mm &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 满载 &nbsp;1070mm至前轴距离： 空载 &nbsp;2040mm &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 满载 &nbsp;2890mm &nbsp;空车时：前轴负荷：18855N &nbsp; &nbsp; 后轴负荷：17405N满载时：前轴负荷： 28136N &nbsp; &nbsp;后轴负荷： 57124N,后悬架基本参数的选择,一、悬架的静挠度 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;fc=66mm二、 悬架的动挠度 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; fd=80mm三、 悬架的弹性特性 &nbsp; &nbsp; &nbsp; &nbsp;选用刚度可变的非线性悬架 &nbsp; &nbsp; &nbsp;C=375.4N/mm四、弹性元件的设计 &nbsp; &nbsp; &nbsp; 4.1 单个钢板弹簧的载荷： &nbsp; &nbsp; &nbsp; 4.2 满载弧高:,4.3 &nbsp; 钢板弹簧长度 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 4.4 &nbsp; 钢板弹簧断面尺寸 &nbsp; &nbsp; &nbsp; &nbsp;钢板弹簧的片宽b &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;b &nbsp;=102mm &nbsp; &nbsp; &nbsp; &nbsp;钢板断截面形状 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 本设计选取矩形截面 &nbsp; &nbsp; &nbsp; &nbsp;钢板弹簧片数n &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n=144.5 &nbsp; 钢板弹簧各片长度,4.6 &nbsp; 钢板弹簧刚度的验算 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;自由刚度 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;夹紧刚度 &nbsp; &nbsp; &nbsp; &nbsp;与设计值C=375.4N/mm相差不大，基本满足主簧刚度要求4.7 &nbsp; 钢板弹簧总成在自由状态下的弧高及曲率半径计算 &nbsp; 4.7.1 钢板弹簧总成在自由状态下的弧高 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Ho=96.98mm &nbsp; 4.7.2钢板弹簧总成在自由状态下的曲率半径 &nbsp; &nbsp;Ro=2862mm &nbsp; 4.7.3钢板弹簧各片自由状态下曲率半径的确定,单马达混合动力系统将广泛应用到本田的小型车上面,单马达混合动力系统将广泛应用到本田的小型车上面,单马达混合动力系统将广泛应用到本田的小型车上面,单马达混合动力系统将广泛应用到本田的小型车上面,4.7.4 &nbsp; &nbsp;钢板弹簧总成弧高的核算 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;H=96.86mm &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 与初始设计值Ho=96.98mm相差不大，满足设计要求五、钢板弹簧强度验算 &nbsp; &nbsp; &nbsp; &nbsp;符合设计要求 &nbsp; &nbsp;六、钢板弹簧主片的强度的核算 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;主片符合强度要求七、钢板弹簧弹簧销的强度的核算 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 吗 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 弹簧销满足强度要求八、减振器的设计 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 减振器的阻尼系数为： &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 减振器最大卸荷力 &nbsp; F0=7571N &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 减振器工作缸直径D &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; D =65 mm,九、计算20m/s车速下，B级路面下整车平顺性 &nbsp; &nbsp; &nbsp; &nbsp;基本参数的确定通过计算机编程求解可得,答辩提纲7、钢板弹簧设计中，完成刚度的校核计算后可能会对弹簧刚度数据有新的调整。应以最新数据重新计算质心数据。 &nbsp; &nbsp; &nbsp;刚开始时已预留了一定的弹性空间，经过校核后，前后发现悬架改变量不大，故按初始值设计计算。25、前钢板弹簧可布置纵梁之下。钢板弹簧的宽度不应过宽，否则布置会有问题 &nbsp; &nbsp; &nbsp; 开始设计时已经考虑到可能有突发情况，所以选的轮距比较大， 弹簧片宽b=102mm，经过校核，没有与其他部件发生干涉26、钢板弹簧应该有自由状态(零件图)，空载状态(装配图)，满载状态(总布置图)三种情况。 &nbsp; &nbsp; &nbsp;（请看CAD图纸）27、钢板弹簧在不同载荷下的变形尺寸与总布置图是否匹配 &nbsp; &nbsp; 经过校核，互相匹配28、弹簧片数以及尺寸，钢板弹簧吊耳型式是否和装配图，总布置图一致 &nbsp; &nbsp; 经过校核，互相一致,1.单马达运动油电智能双离合器动力：适用小型车单马达运动油电智能双离合器动力系统由一个电动马达、1.5升直列4缸汽油发动机以及7速双离合器变速箱组成，能够极大的提高动力系统的燃油效率，相比传统的单电动马达油电混合系统节能30%。它的这一特性意味着将会主要应用到本田未来的小型车上面。,谢谢观赏,</p>