Optimization Design And Analysis Of The Rocker Mechanism Of Double Front Axle Steering System

As we all know,factors such as road conditions,usage conditions of vehicles and the quality of tires themselves are common causes of abnormal wear of wheels.in addition,if the design parameters of automobile steering system are unreasonable,the abnormal wear degree of tires will increase.Data statistics show that about one third of the car failures are caused by the unreasonable selection of steering system parameters.therefore,the research and optimization of steering system parameters of double-front-axle vehicles will help to reduce the degree of abnormal wheel wear of double-front-axle vehicles.From design considerations,according to Ackerman’s law to reduce the abnormal wear of tires,it is necessary to ensure that the vehicle in the process of turning,all wheels are in rolling state,but in reality,affected by various factors,it is difficult to ensure that all tires are kept rolling without slipping.So what we have to do is to ensure that the vehicle in the process of turning,the error between the steering wheel and the steering angle is minimum is the tire in the steering process is basically in the rolling state,this can reduce the abnormal wear of tires.From the design point of view,according to ackermann’s law,to reduce the abnormal wear of tires,it is necessary to ensure that all wheels are in a pure rolling state during turning.however,in actual use,the vehicle will be influenced by many factors,and it is difficult to achieve that all tires are pure rolling without slippage.In the process of product design,appropriate parameters should be selected to ensure that the error between the actual steering angle value of the front and rear steering wheels and the theoretical steering angle value is minimum in the turning motion of the vehicle,and that the wheels do not slip obviously,but are basically in a pure rolling state to reduce abnormal wear of the wheels.The research content of this paper is based on the development and design ofdouble front axle steering vehicle steering system developed by WuZheng group,and the double rocker arm structure of double front axle steering system is designed reasonably.the performance analysis of the steering system is carried out by using ADAMS,including wheel angle relation analysis and steering interference check analysis,and CAE analysis is carried out on the newly designed components to ensure that the newly designed components can meet the steering requirements.In this study,the total transmission ratio of the steering system is changed mainly by adjusting the center distance of the installation hole of the double rocker mechanism,so as to ensure that almost all wheels can rotate purely around the instantaneous center of rotation in the steering process of the vehicle,reduce the sliding phenomenon of the wheels as much as possible,and further reduce the abnormal wear of the wheels.this study will provide reliable theoretical basis for the subsequent design of the double front axle steering system and the production and manufacture of related parts.