The Design And Optimize For Dual-front Axle Steering System Of The Heavy Trucks

Dual-bridge before the turn of the steering wheels for abnormal wear and tear is a common phenomenon in commercial vehicles fields; the phenomenon has aroused the concern of the majority of research workers. In addition to abnormal the tire wear and tear such factors as road conditions, the quality of the tires, the use of methods, but also to the parameters of the steering system. Statistics show that the wheel alignment parameters and steering design is not proper, abnormal tire wear is an important factor, from the wheel position and steering failure caused by vehicle accounted for 30% of failures, the study parameters of the wheel position, steering Kinematic characteristics and design method for reducing the double-front-axle steering system steering wheel of the abnormal wear is particularly important.In this paper, a double-front-axle steering system as a basis for analysis of the lead to double-front-axle steering system steering wheel of the impact of abnormal wear and tear factor, and a double-truck front axle shift of technical parameters for the study, in view of the abnormal wear and tear often law, from the perspective of turning the parameters of the factors that affect wear are analyzed. First of all, the overall structure of the model and structure of the wear and tear may lead to an analysis of the situation, and the steering mechanism has been simplified, the double-front-axle steering system using the method of coordinate transformation, a parametric modeling. Steering system to determine the impact of the parameters, and select which impact significantly on the steering system and under current conditions can be changed as the number of parameters to optimize the object. Determine the shift parameters to optimize the scope and objectives of optimization. If the before and after optimization of the target for the actual steering wheel angle and the theoretical Ackermann angle fully close, it shows that the steering wheel in the rolling state, which has the potential to reduce tire wear.Finally, the use of the optimization ADAMS double-front-axle of the impact of abnormal wear of steering wheel shift parameters are optimized and analyzed to meet the objective function of a set of parameters. Parameters with the parameters of the conclusions of the original analysis, before and after the wheel was found to reduce the theoretical and the actual rotation angle of the margin. Program shows that the appropriate adjustments to four-bar linkage steering system, steering wheel position parameters and the parameters of steering linkage can reduce the double-front-axle steering system steering wheel abnormal wear and tear.