초록 ▼

The railcar includes a low profile skeletal frame having a depressed midsection with supporting surfaces extending therefrom and a four point truck suspension. Vertical loads are applied to the frame so that opposed bending moments are established with respect to one or both pairs of suspension load

The railcar includes a low profile skeletal frame having a depressed midsection with supporting surfaces extending therefrom and a four point truck suspension. Vertical loads are applied to the frame so that opposed bending moments are established with respect to one or both pairs of suspension load support points. The railcar is capable of transporting conventional trailers, semi-trailers or containers through existing tunnel clearances.

대표청구항 ▼

A railcar, comprising: a frame; and a four point truck suspension operatively associated with said frame; said frame including: a spine, having a depressed center portion vertical load transmitting means projecting transversely from said spine adjacent both ends thereof for transmitting only vertica

A railcar, comprising: a frame; and a four point truck suspension operatively associated with said frame; said frame including: a spine, having a depressed center portion vertical load transmitting means projecting transversely from said spine adjacent both ends thereof for transmitting only vertical loads to said truck suspension at four vertical load support points, the load support points of each said pair being spaced apart in opposed transverse alignment with the longitudinal axis of said spine and constituting the sole load transmitting means projecting transversely from said spine adjacent both said ends, said depressed portion of the spine being located between said vertical load transmitting means; first means for supporting a vertical load projecting from the depressed portion of said spine between said pairs, said means being adapted to support said load substantially at the level of said depressed portion, and second means for supporting a vertical load projecting from said spine between one said pair and the adjacent end of said spine, whereby simultaneous vertical loads on said first and second vertical load support means establish opposed bending moments in said frame.