This paper studies the influence of hinge point positioning of a steering cylinder on the pressure fluctuation of the steering system of a wheel loader. Affected by the hinge point position of the steering cylinder, the main causes of the pressure fluctuation are found to be the stroke difference and the force arm difference. Based on theoretical analysis, the hinge point positioning of the steering cylinder was optimized by using genetic algorithm (GA). The AME-sim simulation model of the steering system was built to verify the accuracy of the GA. The wheel loader was reformed according to the optimized articulated points position. Steering tests showed a significant drop in system pressure fluctuation, the energy consumed is also reduced. Further, the analysis shows that the force arm difference is the main factor causing the pressure fluctuation, providing the theoretical and experimental basis for the design of a steering system of wheel loaders.

本文研究了转向缸的铰接点定位对轮式装载机转向系统压力波动的影响。受转向油缸铰接点位置的影响，发现压力波动的主要原因是行程差和力臂差。在理论分析的基础上，采用遗传算法对转向缸的铰点定位进行了优化。建立了转向系统的AME-sim仿真模型以验证GA的准确性。根据优化的铰接点位置对轮式装载机进行了改造。转向测试显示系统压力波动显着下降，能耗也降低了。进一步，