| 摘要 |
<p>A bearing bushing for the journal bearings of rail vehicles, is formed of a part-circular segmental bearing member and arranged in a journal bearing box above an axle, the journal bearing box retaining underneath the axle a lubricating pad which receives lubricant from an oil sump and serves to lubricate a rotating axle journal extending into the journal bearing box. The bearing bushing comprises a tinned support body having a plurality of dovetail-shaped grooves transverse to the axle journal and a bearing bushing segment of white metal having an external surface cast into the dovetail-shaped grooves and an internal surface bearing on the axle journal, groove-shaped depressions being formed in the internal surface of the bearing bushing segment generally below the dovetailshaped grooves. Additional grooves are provided in the internal surface between each two neighboring groove-shaped depressions and parallel to the groove-shaped depressions, the additional grooves having dimensions substantially corresponding to the groove-shaped depressions. The groove-shaped depressions and the additional grooves act to collect lubricant, thereby enhancing formation of a lubricating film between the bearing bushing segment and the axle journal.</p> |
