Railcar
A railcar includes a floor structure including: an underframe including a pair of side sills and a plurality of cross beams arranged between the pair of side sills; a plurality of floor panel receivers located above the cross beams, arranged with gaps in a car width direction, extending along the cross beams, and fixed to the cross beams; one or more seat receivers extending through the gaps in a car longitudinal direction and fixed to the cross beams; and floor panels covering substantially entire surfaces of upper portions of the floor panel receivers and an upper portion(s) of the one or more seat receivers from above and supported by the cross beams through the floor panel receivers and the one or more seat receivers.
1. A railcar comprising a floor structure,
the floor structure including:
an underframe including a pair of side sills and a plurality of cross beams arranged between the pair of side sills;
a plurality of floor panel receivers located above the cross beams, arranged with gaps in a car width direction, extending along the cross beams, and fixed to the cross beams;
one or more seat receivers extending through the gaps in a car longitudinal direction and fixed to the cross beams; and
floor panels covering substantially entire surfaces of upper portions of the floor panel receivers and an upper portion(s) of the one or more seat receivers from above and supported by the cross beams through the floor panel receivers and the one or more seat receivers.
2. The railcar according to claim 1 , wherein:
each of first spaces is formed between the upper portion of the floor panel receiver and an upper portion of the cross beam; and
each of second spaces is formed between the upper portion of the seat receiver and the upper portion of the cross beam.
3. The railcar according to claim 2 , wherein:
each of main body portions of the floor panel receivers has a groove-shaped cross section that is depressed upward when viewed from the car width direction;
the first spaces are formed in the respective main body portions; and
upper portions of the main body portions of the floor panel receivers support the floor panels from below.
4. The railcar according to claim 2 , wherein:
the one or more seat receivers each includes a base portion having a groove-shaped cross section that is depressed upward when viewed from the car longitudinal direction;
the second space(s) is formed inside the base portion(s) of the one or more seat receivers; and
an upper portion(s) of the base portion(s) of the one or more seat receivers supports the floor panels from below.
5. The railcar according to claim 1 , wherein:
the floor structure further includes side sill floor panel receiver portions located above the respective side sills and extending in the car longitudinal direction;
heights of upper portions of the side sill floor panel receiver portions, heights of the upper portions of the floor panel receivers, and a height(s) of the upper portion(s) of the one or more seat receivers are substantially equal to one another; and
the floor panels cover substantially entire surfaces of the upper portions of the side sill floor panel receiver portions, the upper portions of the floor panel receivers, and the upper portion(s) of the one or more seat receivers from above.
6. The railcar according to claim 5 , wherein each of a cross sectional shape(s) of the one or more seat receivers, cross sectional shapes of the floor panel receivers, and cross sectional shapes of the side sill floor panel receiver portions is a channel shape or a hat shape, the cross sectional shapes being perpendicular to their longitudinal directions.
7. The railcar according to claim 5 , wherein:
each of the side sill floor panel receiver portions includes
an upper plate portion located higher than an upper portion of one car width direction end portion of the cross beam and extending in a horizontal direction,
a lower plate portion located lower than a lower portion of the one car width direction end portion of the cross beam, extending in the horizontal direction, and fixed to the lower portion of the one car width direction end portion of the cross beam,
a side plate portion located at a car width direction outer side of the one car width direction end portion of the cross beam, extending in an upward/downward direction, and connecting the upper plate portion and the lower plate portion to each other, and
a connecting plate portion connecting the upper plate portion and an upper portion of the one car width direction end portion of the cross beam to each other;
the connecting plate portion includes
a first plate portion extending from a car width direction inner end portion of the upper plate portion downward toward an upper portion of the cross beam and
a second plate portion extending from a lower end portion of the first plate portion along the cross beam inward in the car width direction and connected to the upper portion of the cross beam; and
car width direction outer end portions of the floor panel receivers are fixed to an upper surface of the second plate portion.
8. The railcar according to claim 1 , wherein the floor structure further includes floor pans each arranged in a space surrounded by the pair of side sills and a pair of adjacent cross beams among the plurality of cross beams, the floor pans being fixed to the underframe.
9. The railcar according to claim 1 , wherein:
each of the floor panel receivers includes
a main body portion located above and spaced apart from the cross beam and extending along the cross beam and
one or more fixed portions projecting downward from the main body portion and fixed to the cross beam; and
a length(s) of the one or more fixed portions is shorter in the car width direction than a length of the main body portion.