To provide an axle bearing unit for a railway vehicle, the axle bearing unit being capable of retaining a lubricant between an inner ring and a back cover and enabling suppression of the occurrence of wear due to fretting.SOLUTION: An axle bearing unit for a railway vehicle has: a rolling bearing that has an outer ring, an inner ring; and a plurality of rolling elements disposed freely rollably between the outer ring and the inner ring, and the axle bearing unit is exteriorized to an axle; and an annular back cover 27 disposed on an axial end side of the inner ring, and the axle bearing unit supports the axle freely rotatably. The back cover 27 has an inner ring-side surface 28 that abuts on the inner ring, and the inner ring-side surface 28 has a plurality of first regions 28a and second regions 28b that are alternately adjacent to each other in the circumferential direction. The surface hardness of each of the first regions 28a is harder than the surface hardness of each of the second regions 28b, and the second regions 28b have recesses spaced apart from the inner ring.SELECTED DRAWING: Figure 2

    【課題】内輪と後蓋との間において潤滑剤を保持することができ、フレッティングによる摩耗の発生を抑制することができる鉄道車両用車軸軸受ユニットを提供する。【解決手段】鉄道車両用車軸軸受ユニットは、外輪、内輪、及び前記外輪と前記内輪との間に転動自在に配置される複数の転動体を有し、車軸に外装される転がり軸受と、内輪における車軸方向一端部側に配置された円環状の後蓋27と、を有し、車軸を回転自在に支持する。後蓋27は、内輪に当接する内輪側面28を有し、内輪側面28は、円周方向に交互に隣接する複数の第1領域28aと第2領域28bとを有し、第1領域28aの表面硬さは、第2領域28bの表面硬さよりも硬く、第2領域28bは内輪から離隔する凹部を有する。【選択図】図2


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    AXLE BEARING UNIT FOR RAILWAY VEHICLE AND METHOD FOR MANUFACTURING THE SAME


    Weitere Titelangaben:

    鉄道車両用車軸軸受ユニット及びその製造方法


    Beteiligte:
    KUBOTA AKIHO (Autor:in)

    Erscheinungsdatum :

    01.07.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    F16C SHAFTS , Wellen / B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES



    RAILWAY VEHICLE AXLE BEARING

    SUZUKI KENGO | Europäisches Patentamt | 2019

    Freier Zugriff

    AXLE BEARING FOR RAILWAY VEHICLE

    HORII YOUJI / NIWA MISAKI / ZHANG MIAN et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    BEARING FOR RAILWAY VEHICLE AXLE

    SHIROTA SHINICHI / TAKEUCHI KENTO | Europäisches Patentamt | 2016

    Freier Zugriff

    SENSORIZED AXLE BOX-BEARING UNIT FOR SUPPORTING A RAILWAY AXLE

    ROSSI MARIO / MAZZARINO ALBERTO / ROBERTI ANDREA et al. | Europäisches Patentamt | 2017

    Freier Zugriff

    Sensorized axle box-bearing unit for supporting a railway axle

    ROSSI MARIO / MAZZARINO ALBERTO / ROBERTI ANDREA et al. | Europäisches Patentamt | 2020

    Freier Zugriff