Pillow beam of rail vehicle and rail vehicle
AssigneeHitachi, Ltd.
InventorsYohei Isosaki, Takashi Miyanaga
Life of this patent
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Abstract
A rail vehicle's pillow beam (9) has a plurality of radial ribs (20) radially disposed, horizontally oriented, projecting shapes on a flat plate surface arranged radially from the center of the vertical load input (17) and curvature provided along the longitudinal or width direction of the vehicle, gradually curving along the longitudinal or width direction of the vehicle as it moves away from the center of the vertical load input, and a plurality of circular ribs (21) arranged intermittently around the vertical load input seating surface so as to overlap the plurality of radial ribs (20).
Claims9
A pillow beam (9) installed in a bogie frame (3) structure that constitutes the floor of a vehicle structure, the pillow beam comprising:
- a plurality of radial ribs (20) being arranged radially from an air support hole (19) positioned at a center of a vertical load input portion (17), having a projecting shape on the face of a horizontally oriented flat plate of the bogie frame (3), and provided with a curvature that gradually follows a longitudinal or width direction of the vehicle as the plurality of radial ribs (20) moving away from the center of the vertical load input portion, and
- a plurality of circular ribs (21) intermittently arranged around the air support hole (19) of the vertical load input, each circular rib of the plurality of circular ribs (21) having an intermittent segment with non-uniform height and positioned above and completely overlapping each radial rib of the plurality of radial ribs (20).
A rail vehicle (100) having a body structure (1) which has a bogie frame (3) which extends longitudinally and forms the floor, a side structure (4) located at end of the bogie frame, a gable structure (5) located at longitudinal end of the bogie frame, a roof structure (6) located above the side and gable structures, a cart (2) mounting the body structure, a pillow beam (9) corresponding to the position of the cart (2) in longitudinal direction of the rail vehicle (100) and located under the bogie frame (3), and a plurality of buffer members (14) which receive vertical loads from the bogie frame (3) to the cart (2), wherein the rail vehicle (100) comprising:
- wherein the pillow beam (9) has a plurality of radial ribs (20) which is arranged radially from an air support hole (19) positioned at a center of the vertical load input area (17) of the pillow beam (9), has projecting shape on a face of a flat placed horizontally on the pillow beam, and has a curvature provided to follow a longitudinal or width direction of the rail vehicle gently as the plurality of ribs move away from the center of the vertical load input area, and
- a plurality of circular ribs (21) intermittently arranged around the air support hole (19) of the vertical load input, each circular rib of the plurality of circular ribs (21) having an intermittent segment with non-uniform height and positioned above and completely overlapping each radial rib of the plurality of radial ribs (20).
Dependencies are inferred from the claim text.