油气悬挂压力连通装置设计与性能仿真  

Design and Characteristics Analysis of Coordination Device for Hydro Pneumatic Suspension

作　　者：黄夏旭[1] 杨珏[1] 张文明[1] 申焱华[1] 

机构地区：[1]北京科技大学机械工程学院,北京100083

出　　处：《农业机械学报》2011年第12期43-47,54,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：北京市科技计划资助项目(Z101103055010004)

摘　　要：矿用自卸车在空载及满载状态下前、后轴荷变化较大导致油气悬挂内部压力变化也很大,进而不能直接连通,为此设计了一种具有压差控制功能的油气悬挂连通装置。该装置能使前、后桥油气悬挂内部压力在一定压差范围内连通并达到平衡的效果。建立了由压力协调装置连接的连通式悬挂二分之一车模型,对前、后轮顺序通过台阶和扫频激励工况进行了仿真分析。以簧上质量质心垂向加速度和俯仰角加速度、前后悬挂输出力的特性作为标准对结果进行了分析。结果表明,相对独立式悬挂,压力协调装置连接的连通式悬挂具有更好的抗俯仰性能,输出力特性也更加平稳。A coordination device was constructed to solve the problem that the front and rear hydro pneumatic suspension of off-highway dump trucks cannot be directly connected,which was caused by the great changes of the front and rear axle load ratio in no-load and full load conditions.A simulation analysis was carried out under a half car model,in which the front and rear hydro pneumatic suspensions were connected by the coordination device.The simulation was divided into the front and rear wheels order thought the step and sine sweep excitation conditions.Sprung mass vertical acceleration,pitch angel acceleration and output force characteristics of suspensions were selected as the stand to evaluate the result.The results showed that compared with the independent suspension,the hydraulically interconnected suspensions which are connected by the coordination device had better anti-pitch performance,as well as more stable output force characteristics.Meanwhile,the extension implementation modality of the connected device was proposed.

关 键 词：矿用自卸车 油气悬挂 连通装置 

分 类 号：U463.33[机械工程—车辆工程] TD562.1[交通运输工程—载运工具运用工程]