双前桥转向机构优化设计方法研究

A Research on Optimization Design of Double Front Axle Steering Mechanism

双前桥转向机构包含两个独立的转向梯形机构和双前桥间的转向联动机构—双摇臂系统。文中分析了双前桥转向机构应实现的功能、运动规律和与其它系统可能造成的运动干涉,提出了同时保证双前桥汽车车轮转向时做纯滚动和杆系干涉造成的车轮异常磨损最小的多目标优化设计方法。

Double-front-axle steering mechanism comprises two steering trapeziums （one on each front axle） and a double swing arm, linking both front axles. The functions and kinematics characteristics the double front axle steering mechanism should have and possible movement interference are analyzed. A multi-objective optimization scheme is put forward for assuring pure rolling of double front axle wheels in cornering and minimum abnormal wear of wheels due to linkage interference.