| 摘要 |
<p>A bi-level aluminum vehicle carrier railcar (10) utilizes underframe components constructed principally of steel and an upper body comprised principally of aluminum components. The steel underframe components that could potentially introduce ferrous components inside the railcar (10) are covered with aluminum. The underframe is supported on a pair of railcar trucks (12) with the underframe including a center sill and a pair of two piece draft arms (14). Each draft arm (14) includes an outboard one-piece, hollow rectangular draft arm casting (40) adapted to receive a coupler assembly (52) therein and an inboard one-piece hollow rectangular draft arm casting (50) having a center plate (66) and coupled to the outboard draft arm casting (40). The inboard and outboard draft arm castings (40, 50) may be coupled together by welding (76, 78). Additionally, the inboard and outboard draft arm castings (40, 50) may be overlapped in a telescoping fashion to allow for two weld line connections (76, 78) therebetween.</p> |
