多子系统双层隔振实验台设计

Design on Two-Stage Vibration Isolation Test Bed with Multiple Subsystems

动力包双层隔振系统除机组外还有静压泵和空空冷却装置的隔振,从而构成了典型的多子系统双层隔振系统,其隔振设计将直接影响动力包结构部件的工作寿命和动车的乘坐舒适性。为研究多子系统双层隔振系统的隔振设计方法,以内燃动车动力包隔振系统设计为对象,设计了一种多子系统双层隔振实验台,重点对公共构架、安装支架等进行了结构设计;并利用ANSYS软件对安装支架进行了动态性能分析;通过虚拟装配设计保证了结构部件之间不存在装配干涉;最后对加工完成的实验台进行了测试,结果表明实验台隔振效果明显。可对多子系统双层隔振系统的隔振设计进行实验研究。

Besides the vibration isolation of unit in powerpack,static pressure pump and air cooling device also must be isolated vibration,thus constituting the two-stage vibration isolation system with multi subsystems,and its isolation will directly affect the life of powerpack and the riding comfort of passengers. In order to study the vibration isolation design method of two-stage vibration isolation system with multiple subsystems,taking the DMU（Diesel Multiple-Unit）power pack as subject,a two-stage vibration isolation test bed with multiple subsystems was designed,especially on structural design of public framework and mounting bracket. The dynamic performance of the mounting bracket was analyzed using ANSYS software,and virtual assembly ensured that there was no interference between the structural components of the assembly design. Finally experiments were carried out on the finished test bed. Results show that the isolation effect of the test bed is obvious,and it can conduct relevant experimental research on two-stage vibration isolation with multiple subsystems.