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目的研究减小履带装甲车辆振动水平的途径．方法提出摇架式双层隔振系统，建立系统的动力学模型，求导并分析其传递率特性，给出确定隔振元件刚度的步骤，并以某装甲输送车作了实例计算．结果系统的转动支承轴与弹性支承点在第二峰值后的隔振区分别具有每倍频程（ｏｃｔ）１２ｄＢ和２４ｄＢ的传递率下降斜率，系统的结构系数将影响转动支承轴的传递率，转动支承轴通常会传递较多的振动力．结论该系统在履带装甲车辆动力传动装置的隔振方面具有良好的应用前景．
Objective To study ways to reduce the vibration level of tracked armored vehicles. Methods The cradle-type double-layer vibration isolation system is proposed, the dynamic model of the system is established, the transfer rate characteristics are derived and analyzed, and the step of determining the stiffness of the vibration isolation element is given. Results The rotational isolation axis of the system and the elastic support point after the second peak respectively have the descending slope of the transmissibility of 12dB and 24dB per octave respectively. The structural coefficient of the system will influence the transmissibility of the rotating support shaft, Rotating the support shaft usually transmits more vibrational force. Conclusion The system has a good application prospect in vibration isolation of power transmission device of tracked armored vehicles.