工程车辆双桥油气悬架性能对比仿真分析

Simulation Research on the Two Axles Hydro-pneumatic Suspension for Construction Vehicles

通过分析全路面起重机双桥油气悬架组的液压系统油路图,建立双桥油气悬架组的7自由度数学模型,分析并联式和独立式双桥油气悬架模型主要区别,并利用AMESim仿真软件建立并联式和独立式双桥油气悬架仿真模型。对比分析了两种悬架系统的压力、轮胎动载荷、垂直加速度等参数的最大值,得出并联式悬架组的性能指标要优于独立双桥悬架的结论。

By analyzing the hydraulic system circuit diagram of the all terrain crane＇ s two axles hydro-pneumatic suspension （HPS） , 7 DOF mathematical model of the two axles HPS group was established. The main differences of independent type and parallel type two axles HPS model were also studied, and their simulation models were set up based on AMESim software. The maximum pressure, tire dynamic load, and vertical acceleration about the independent type and parallel type two axles HPS model were comparatively analyzed. The conclusion is that the performance index of the parallel type two axles HPS is superior to that of the independent two axles HPS.