PROBLEM TO BE SOLVED: To combine early detection of abnormality of a bearing with prevention of erroneous detection thereof regardless of the usage condition of the bearing.SOLUTION: A bearing monitoring device for a railroad vehicle is provided for monitoring a bearing of a truck supporting a vehicle body. The bearing monitoring device for a railroad vehicle comprises: a receiver to receive data on bearing temperature and data on at least one of the load and the rotational speed of the bearing; and a diagnosis instrument which, when a monitor value which is at least one of a temperature value and a temperature rise rate exceeds a variable threshold, determines that abnormality has occurred in the bearing. When at least one of the data values of the load and the rotational speed decreases, the diagnosis instrument decreases the variable threshold.SELECTED DRAWING: Figure 2

    【課題】軸受の使用状況にかかわらず、軸受異常の早期検知と誤検知防止とを両立させる。【解決手段】車体を支持する台車の軸受を監視する鉄道車両の軸受監視装置であって、軸受温度のデータと、前記軸受の荷重及び回転速度のうち少なくとも一方のデータとを受信する受信器と、前記受信器で受信された軸受温度のデータから得られる温度値及び温度上昇率の少なくとも一方である監視値が可変閾値を超えた場合に、前記軸受に異常が発生したと判定する診断器と、を備え、前記診断器は、前記荷重及び前記回転速度のうち少なくとも一方のデータの値が減少したときに、前記可変閾値を下げる。【選択図】図2


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    Title :

    BEARING MONITORING DEVICE FOR RAILROAD VEHICLE


    Additional title:

    鉄道車両の軸受監視装置


    Contributors:

    Publication date :

    2017-08-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / F16C SHAFTS , Wellen / G01K MEASURING TEMPERATURE , Messen der Temperatur / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen



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