According to the indoor acoustic test standard, the effect of labyrinth ring damping device on vibration and noise reduction of railway wheels was tested and analyzed. There were two kinds of damped wheels: single ring damped wheels and double ring damped wheels. Impact-hammering and steel ball dropping were used as the excitations in the testing of the wheels in a semi-anechoic room. Effect of vibration and noise reduction of the labyrinth ring damping device was eval-uated with damping ratio, acceleration level and sound energy level (SEL). The results show that comparing with a typical wheel (W-0), the damping ratios of both the single-ring damped wheel (W-A) and the double-ring damped wheel (W-AB) in-crease significantly, which means that the effect of vibration and noise reduction of the labyrinth ring damped wheels is obvi-ously better than that of the typical wheel, and W-AB wheel is even better. Under radial excitation, the SELs of W-A and W-AB are respectively reduced by 7.2 dB and 9.5 dB. Under axial excitation, the SELs of W-A and W-AB wheels are reduced by 7.9 dB and 9.2 dB respectively.%根据室内声学测试标准，试验和分析了迷宫式阻尼环装置对铁路车轮的减振降噪特性。阻尼车轮有两种，分别为单环和双环阻尼车轮。采用力锤敲击和落球撞击作为激励输入，在半消声室内进行振动声辐射特性试验。以模态阻尼比、加速度级和声能量级为评价指标，对迷宫式环形阻尼车轮的减振降噪效果进行评价。据此表明了与标准车轮相比（W-0），单环阻尼车轮（W-A）和双环阻尼车轮（W-AB）的模态阻尼比提升显著，减振降噪效果明显，双环阻尼车轮更佳。在径向激励下，W-A阻尼车轮声能量级降低7.2 dB，W-AB阻尼车轮声能量级降低9.5 dB。在轴向激励下， W-A阻尼车轮声能量级降低7.9 dB，W-AB阻尼车轮声能量级降低9.2 dB。显示了各种阻尼环车轮对铁路机车的降噪是有效的。
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