双层隔振系统隔振效果实验分析

Experimental Isolation Effect Analysis of Two-Stage Vibration Isolation System

针对出口内燃动车动力包采用的双层隔振系统的隔振效果问题,根据优化的双层隔振系统刚度,对动力包双层隔振系统进行了地面台架实验。利用三向加速度传感器测试动力包各运行工况下机组振动烈度测点和1级、2级隔振器上下测点的加速度值,从机组的振动烈度、1级、2级各隔振器的振级落差和动态减振力有效值随转速变化关系分析了双层隔振系统的隔振效果。结果表明,双层隔振系统优化的刚度结果隔振效果良好,能满足实际工程的需要。

Aiming at analyzing the isolation effect of a two-stage vibration isolation system that is used in exported internal combustion motor car,aground platform experiment of the power train′s two-stage vibration isolation system is carried out according to the optimized two-stage vibration isolation system stiffness.By using the acceleration values of unit vibration intensity measuring points and each vibration isolator′s upper and lower measuring points,the isolation effect of the system is systematically analyzed from the unit vibration intensity,vibration level difference and dynamic dimpling force of each primary and secondary vibration isolator.The results show that the isolation effect of the system′s optimized stiffness is good,which can completely meet practical engineering needs.