齿轮齿条式转向器驱动断开式转向梯形机构优化设计程序应用算例.doc

齿轮齿条式转向器驱动断开式转向梯形机构优化设计程序应用算例 PAGE 第 PAGE \* Arabic \* MERGEFORMAT 9 页 v? v ? ? ? ? B L R 图1 汽车转向示意图 B=1215 B=1215 L1 L2 L3 y O1 O2 图中主要记号: 0.转向器; 1.转向器齿条(L1 ); 2.转向拉杆(L2 ); 3.转向节臂(L3 ); O1: 左轮转向主销; O2: 右轮转向主销(O1 O2 =B); y: 偏距(图示位置取负,反之取正); ?0 : 转向节臂安装角; S: 转向齿条左右位移(左移时取正,反之取负) ?: 左前轮转向角(向左转时取正); ?: 右前轮转向角(向左转时取正) 轴距L=1760mm 图2 齿轮齿条转向器驱动断开式转向梯形机构示意图 1 2 3 0 ?0 前方 ? ? S0 S0 y x O ??? ? ?? ?P??P?2 ?P? ?P ?2 A A ?2? ?2? B ?3?3?LW ?3 ?3? LW 图3 例1优化计算界面图(右侧机构位移仿真图中,红线位置对应于直线行驶状态) 例1机构优化结果列表(?max为最大压力角) L1 L2 L3 y ?0 ?max ?M ?M(s=60mm) ? 1146 56 79 -52 191? 48.9? 60? 42.25? 2.17? 理论转向半径计算: R=L/sin?M=1760/sin42.25?=2618(mm) 例1转向梯形机构转向角位移计算列表 S(mm) ?(?) ?(?) ?0(?) -60 -42.2574632267953 -60.0099844656788 -67.69238 -58 -40.829114323641 -58.2330566531153 -64.96833 -56 -39.422000438079 -56.3903655523411 -62.24996 -54 -38.0329541842747 -54.4855972917956 -59.54088 -52 -36.6591534645995 -52.5230933939387 -56.84502 -50 -35.298052146439 -50.507833050742 -54.16652 -48 -33.9473256292807 -48.4453934110167 -51.50954 -46 -32.6048274233609 -46.3418867742313 -48.87822 -44 -31.268553996243 -44.2038749593937 -46.27651 -42 -29.9366159138701 -42.038262707179 -43.70812 -40 -28.6072138362256 -39.8521736313501 -41.17643 -38 -27.2786183048568 -37.6528137746887 -38.68444 -36 -25.949152531378 -35.4473290446901 -36.23475 -34 -24.6171775961266 -33.2426635258593 -33.8295 -32 -23.2810796167353 -31.0454257661065 -31.4704 -30 -21.939258562736 -28.8617695767801 -29.15872 -28 -20.59011848501 -26.6972947281756 -26.89528 -26 -19.2320590055033 -24.5569713120185 -24.68054 -24 -17.8634679785992 -22.4450896874166 -22.51454 -22 -16.4827152949697 -20.365236056819 -20.39703 -20 -15.0881478546713 -18.3202920439544 -18.32742 -18 -13.6780857910323 -16.312455324595 -16.30488 -16 -12.2508200821918 -14.3432774807795 -14.32835 -14 -10.8046178850515 -12.4137148249619 -12.3966 -12 -9.33769899895182 -10.5241879271891 -10.50822 -10 -7.84827588711962 -8.67464589036157 -8.661703 -8 -6.33453481290422 -6.864631952275