Car body for railway rolling stock and method for fabricating car body
First Claim
1. A substantially air-tight railway passenger car including a car body comprising an underframe means, a pair of side means disposed on respective lateral sides of said underframe means for forming sides of the car body, means for defining respective longitudinal ends of the car body, and a roof means for forming a roof of the car body, wherein said underframe means comprises a floor means including a curved surface of at least one radius of curvature with respect to a transverse direction of the car body, and wherein said floor means is fashioned of an extruded light alloy material and includes reinforcing means extending in a thickness direction of the floor means and continuously in a longitudinal direction of the car body.
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Accused Products
Abstract
A car body for high speed railway rolling stock and a method of fabricating the same wherein, in order to prevent a variation of external pressures produced when the rolling stock travels at high speeds from being propagated into the interior of the car body, the car body is of an air-type construction. The car body has a reduced weight and is capable of withstanding a variation of the external pressures by the provision of a construction in which the underframe of the car body includes a curved surface having at least one radius of curvature extending across a width of the car body.
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Citations
22 Claims
- 1. A substantially air-tight railway passenger car including a car body comprising an underframe means, a pair of side means disposed on respective lateral sides of said underframe means for forming sides of the car body, means for defining respective longitudinal ends of the car body, and a roof means for forming a roof of the car body, wherein said underframe means comprises a floor means including a curved surface of at least one radius of curvature with respect to a transverse direction of the car body, and wherein said floor means is fashioned of an extruded light alloy material and includes reinforcing means extending in a thickness direction of the floor means and continuously in a longitudinal direction of the car body.
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11. A car body of a railway rolling stock comprising an underframe means, a pair of side means disposed on respective lateral sides of said underframe means for forming sides of the car body, and roof means for forming a roof of the car body, said underframe means comprises a pair of side sill means respectively disposed along lateral sided of the car body and arranged so as to extend in a longitudinal direction of the car body, cross beam means arranged between said side sill means and having lateral ends respectively mounted on said side sill means, and a floor means disposed on an upper surface of said cross beam means and comprising a curved surface having at least one radius of curvature extending across a width of the car body, and wherein said cross beam means comprises a plurality of lightweight alloy extruded members having a substantially Y-shaped portion, and a surface means for supporting said floor means comprising a curved surface corresponding with the radius of curvature of said curved surface of said floor means.
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13. A car body for a railway rolling stock comprising an underframe means, a pair of side means disposed on respective lateral sides of said underframe means for forming sides of the car body, and roof means for forming a roof of the car body, said underframe means comprises a pair of side sill means respectively disposed along lateral sides of the car body and arranged so as to extend in a longitudinal direction of the car body, cross beam means arranged between said side sill means and having lateral ends respectively mounted on said side sill means, and a floor means disposed on an upper surface of said cross beam means and comprising a curved surface having at least one radius of curvature extending across a width of the car body, and wherein each of said side means includes an inner surface having at least one flange means for enabling a connection of said cross beam means and at least one further flange means connected to a lateral end of said floor means.
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14. A car body for a railway rolling stock comprising an underframe means, a pair of side means disposed on respective lateral sides of said underframe means for forming sides of the ca body, and roof means for forming a roof of the car body, said underframe means comprises a pair of side sill means respectively disposed along lateral sides of the car body and arranged so as to extend in a longitudinal direction of the cart body, cross beam means arranged between said side sill means and having lateral ends respectively mounted on said side sill means, and a floor means disposed on an upper surface of said cross beam means and comprising a curved surface having at least one radius of curvature extending across a width of the car body, and wherein respective lateral ends of said floor means are respectively connected to a rocker rail means of the side means.
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17. A substantially air-tight railway passenger car underframe means for forming a lower surface of the passenger car, said underframe means including a pair of side sill means respectively disposed along lateral sides of the car and extending in a longitudinal direction of the car, wherein said underframe means comprises a floor means of a lightweight ally extruded material with at least an upper cured surface in at least one radius of curvature extending a cross a width of the car, and wherein reinforcing means are integrally formed in one piece with the floor means and project in a thickness direction of said floor means for reinforcing said floor means.
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18. A substantially air-tight railway passenger car underframe means for forming a lower surface of the passenger car, the underframe means comprising side sill means respectively disposed along lateral sides of the car and extending in a longitudinal direction of the car, a plurality of cross beam means disposed in a transverse direction of the car side sill means to extend in a transverse direction of the car and mounted at respective lateral ends thereof on said side sill means, said underframe means comprising a floor means formed of a lightweight alloy extruded material disposed on an upper surface of said cross beam means, said floor means including a curved surface having at least one radius of curvature with respect to a transverse direction of the car, said floor means including a reinforcing means integrally formed in one piece with the floor means and projecting in a direction of a thickness of said floor means.
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19. An underframe means of a railway rolling stock for forming a lower surface of a car body and comprising side sill means respectively disposed along lateral sides of the car body and extending in a longitudinal direction of the car body, cross beam means disposed in a transverse direction of the car body between said side sill means and connected at respective lateral ends thereof with said side sill means, said underframe means comprising a floor means formed of extruded shaped members and disposed on an upper surface of said cross beam means, said floor means including a curved surface having at least one radius of curvature extending across a width of the car body, and wherein said cross beam means if formed of extruded shaped members made of a lightweight alloy having a substantially U-shaped section and an upper portion formed into a circular arc-like configuration corresponding to the at least one radius of curvature of the curved surface of said floor means.
- 20. A substantially air-tight railway passenger car underframe means for forming a lower surface of the passenger car, the underframe means comprising a pair of side sill means respectively disposed along lateral sided of the car and arranged so as to extend in a longitudinal direction of the car, a plurality of cross beam means disposed between said side sill means to extend in a transverse direction of the car and mounted on respective lateral ends to said side sill means, and an end underframe means comprising body bolster means at positions of the car at which railway truck means are provided, said end-underframe means provided at respective longitudinal ends of the car, said end-underframe means including end-underframe cross beam means disposed adjacent said body bolster means and between said side sill means to extend in the transverse direction of the car and wherein a floor means is provided having a curved surface with at least one radius of curvature with respect to the transverse direction of the car, said floor means is disposed on an upper surface of said cross beam means and is positioned in an area enclosed by said side sill means and the respective end-underframe means, said floor means being formed of a lightweight alloy extruded material and including a reinforcing means integrally formed in one piece with the floor means and projecting in a direction of a thickness of said floor means.
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22. A method of fabricating a substantially air-tight passenger railway car including a car body, with the car body comprising a roof means for forming a roof of the car body, side means for forming respective lateral sides of the car body, end means for forming respective longitudinal ends of the car body, and underframe means all of which are separately constructed and combined to form the car body, the method comprising the steps of installing a floor member having a curved surface of at least one radius of curvature with respect to a transverse direction of the car body and formed of a lightweight alloy extruded material having a reinforcing means integrally formed in one piece with the floor means and extending in a thickness direction of the floor means on an upper surface of said underframe means, and joining said underframe means, said roof means, said side means, and said end frame means so as to form the car body.
Specification