Railcar
AssigneeNippon Sharyo, Ltd.
InventorsTetsuro Sato, Kentaro Hayashi, Naoshige Matsuo
Life of this patent
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Abstract
According to a railcar, a fuse member that couples a first end beam to a second end beam along a car longitudinal direction is formed as a channel material with an approximately U-shaped cross-section, including a web disposed to extend along the car longitudinal direction and a pair of flanges disposed upright from both end portions of this web. Accordingly, when a load received in collision exceeds a predetermined value, the fuse member buckles to allow the first end beam to move toward the second end beam to ensure reducing variation of the load that allows the first end beam to move toward the second end beam. Consequently, when the intended load is input, the first end beam is allowed to move toward the second end beam.
Claims15
A railcar comprising:
- an underframe that includes a first end beam disposed at an end portion in a car longitudinal direction and disposed to extend along a car width direction and a second end beam disposed separately from the first end beam to a car inner side and disposed to extend along the car width direction;
- and
- an energy absorbing member that is arranged between the first end beam and the second end beam and that absorbs an energy input from the first end beam and transmitted to the second end beam in a collision;
- and
- a fuse member that couples the first end beam to the second end beam along the car longitudinal direction and that buckles to allow the first end beam to move toward the second end beam when a load received in the collision exceeds a predetermined value,
- wherein the fuse member is formed of a channel material with an approximately U-shaped cross-section, the channel material including a web disposed to extend along the car longitudinal direction, and a pair of flanges disposed upright from edge portions of the web;
- and
- a first gusset plate bonds the flanges of the fuse member at a side of the first end beam to the first end beam, and a second gusset plate bonds the flanges of the fuse member at a side of the second end beam to the second end beam.
Dependencies are inferred from the claim text.