低噪声车辆减速器降噪效果预测分析  

Predictive Analysis of Noise Reduction Effect of Low Noise Vehicle Retarder

作　　者：屠志平 张广勋 安岩 马天宇 TU Zhi-ping;ZHANG Guang-xun;AN Yan;MA Tian-yu(Signal&Communication Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Electricity Services Department of Lanzhou Railway Bureau,Gansu Lanzhou730070,China)

机构地区：[1]中国铁道科学研究院集团有限公司通信信号研究所,北京100081 [2]兰州铁路局集团有限公司电务段,甘肃兰州730070

出　　处：《机械设计与制造》2021年第3期10-14,18,共6页Machinery Design & Manufacture

基　　金：中国铁道科学研究院集团有限公司科研开发计划顶目—驼峰车辆减速器噪声综合治理的深化研究(2018YJ067)。

摘　　要：研究目的:选择某典型驼峰编组站作为测试对象,进行合理布点监测,统计噪声测试值,对噪声测试值进行数值分析,建立车辆减速器的噪声特性传播规律方程模型,依据此模型,通过计算来预测各测点的噪声数值,与实测值进行比较,验证传播方程的可用性。从而科学预测编组站在安装低噪声车辆减速器后,整个站场的降噪效果,并为今后驼峰编组站噪声测试与预测提供有效的分析方法。研究结论:(1)从时域和频谱分析来看,低噪声车辆减速器相对于普通车辆减速器设备具有明显的降噪效果;(2)从噪声频谱图来看,低噪声车辆减速器对高频噪声具有明显的抑制作用;(3)通过计算分析,若全场安装低噪声车辆减速器后,能有效降低站场的厂界和小区环境的噪声,基本达到标准所规定的要求。Research purpose:An typical descending hump marshalling station was selected as the test object to conduct reasonable distribution monitoring,and calculate the test value of noise produced by vehicle retarder.Using the numerical analysis method,the noise test value is processed to establish the propagation law equation of the noise characteristic of vehicle retarder.According to this equation,the noise value of each measuring point is compared with the measured value to verify the availability of the propagation equation.Thus,we can scientifically predict the noise reduction effect of the installation of low noise vehicle retarder,and provide an effective analysis method for future hump marshalling station noise test and prediction.Research conclusion:(1)From the time domain and spectrum analysis,the low noise vehicle retarder has obvious effect on noise reduction compared with the ordinary vehicle retarder;(2)From the noise spectrum,the low noise vehicle retarder has an obvious inhibitory effect on the high frequency noise;(3)Through calculation and analysis,if the low noise vehicle retarder is installed in the whole field,it can effectively reduce the noise of factory boundary and residential area environment,and basically meet the requirements specified in the standard.

关 键 词：驼峰编组站 低噪声车辆减速器 噪声测试 降噪效果 

分 类 号：TH16[机械工程—机械制造及自动化] TB533.2[理学—物理]