초록 ▼

A railway car underframe is provided for mounting a composite box structure thereon to form an insulated railway boxcar. The composite box structure includes side walls, end walls and a floor molded as an integral unit with fiber reinforced plastic interior and exterior surfaces. The composite box s

A railway car underframe is provided for mounting a composite box structure thereon to form an insulated railway boxcar. The composite box structure includes side walls, end walls and a floor molded as an integral unit with fiber reinforced plastic interior and exterior surfaces. The composite box structure includes a first fiber reinforced composite unit and a second fiber reinforced composite unit. The first fiber reinforce composite unit provides the end walls, side walls and floor for the railway boxcar. The second fiber reinforce unit may be permanently attached to the side walls and end walls to provide a roof for the boxcar. The railway car underframe has a center sill, side sills and end sills with a generally rectangular configuration and coplanar surfaces for adhesively bonding the composite box structure with the railway car underframe. Mechanical fasteners are also provided to couple the composite box structure with the railway car underframe.

대표청구항 ▼

[ What is claimed is:] [8.] A railway underframe for mounting a composite box structure thereon comprising:a center sill with a pair of side sills and a pair of end sills arranged in a generally rectangular configuration;a plurality of cross bearers extending between the center sill and the side sil

[ What is claimed is:] [8.] A railway underframe for mounting a composite box structure thereon comprising:a center sill with a pair of side sills and a pair of end sills arranged in a generally rectangular configuration;a plurality of cross bearers extending between the center sill and the side sills;a plurality of longitude stringers extending generally parallel with the center sill and spaced laterally from each other between the center sill and the side sills;a pair of railway trucks attached to the underframe adjacent to each end of the center sill, each railway truck having a plurality of wheels;a body bolster extending between the center sill and the side sills above each of the railway trucks;a plurality of covers attached to and extending generally horizontally from each body bolster with each cover sized to extend over a respective wheel of the railway truck associated with the respective body bolster;means for mechanically attaching the composite box structure with each side sill;a plurality of coplanar surfaces formed on the railway car underframe by the side sills, the end sills, the center sill, the longitudinal stringers and the covers;a plurality of spacers on selected coplanar surfaces with each spacer having a first thickness; andan adhesive covering the selected coplanar surfaces with the adhesive having a thickness at least equal to the thickness of the spacers for adhesively bonding the composite box structure with the railway car underframe.