| 摘要 |
This invention relates generally to rail electrification systems, and more particularly to steel conductor rail constructions utilized in such systems. In a preferred embodiment, an electrical conductor rail (20) is arranged for sliding engagement by a collector shoe, and includes a bimetallic non-integral laminate assemblage constituted of two nested essentially tubular metal strips (28, 30) each of irregular substantially identical cross-sectional configuration, the assemblage having a grooved track portion (24) for receiving and guiding a collector shoe, and having a suspension portion (22) adapted to be clamped by suspender fittings. The track portion (24) is connected with the suspension portion (22) by a composite double-thickness web (26) which is coextensive with the track portion (24) and suspension portion (22). One (28) of the metal strips (28, 30) is completely exterior to the other strip (30) and is constituted of abrasion-resistant materal, whereas the other strip (30) is characterized by high electrical conductivity and high heat conductivity. The nested strips (28, 30) are in intimate, large-surface heat-exchanging contact with each other.
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