To shield a wheel radiation sound by a simple method without adversely affecting constitution elements of a railroad and improve an exposure situation of the wheel radiation sound along a railroad line.SOLUTION: A wheel radiation sound shielding device includes an injection nozzle 38 injecting gas having higher acoustic impedance density than that of the air at the outside of a wheel 11 in the vehicle width direction so as to cover at least a part of the wheel 11. An air flow F is formed by the gas injected from the injection nozzle 38 so that a wheel radiation sound S1 is reflected by the air flow F inward in the vehicle width direction.SELECTED DRAWING: Figure 4

    【課題】鉄道の構成要素に影響を及ぼすことなく簡易な方法で車輪放射音を遮蔽し、鉄道沿線における車輪放射音の暴露状況を改善する。【解決手段】車輪放射音遮蔽装置は、空気より音響インピーダンス密度の高い気体を、車輪11の車幅方向外側において当該車輪11の少なくとも一部を覆うように噴射する噴射ノズル38を有する。噴射ノズル38から噴射された気体により気流Fが形成され、この気流Fにより車輪放射音S1が車幅方向内側に反射する。【選択図】図4


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    Title :

    WHEEL RADIATION SOUND SHIELDING DEVICE AND WHEEL RADIATION SOUND SHIELDING METHOD


    Additional title:

    車輪放射音遮蔽装置及び車輪放射音遮蔽方法


    Contributors:

    Publication date :

    2019-02-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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