PLATE SPRING UNIT AND RAILROAD VEHICLE CARRIAGE USING SAME

摘要

A railcar bogie (1) includes: a cross beam (4) configured to support a carbody (11) of a railcar; a pair of front and rear axles (5) between which the cross beam is located and which are respectively arranged in front of and behind the cross beam (4) in a railcar longitudinal direction so as to extend in a railcar width direction; bearings (7) respectively provided at both railcar width direction sides of each of the axles (5) and configured to rotatably support the axles (5); axle boxes (8) configured to respectively accommodate the bearings (7); and a plate spring unit (30) configured to extend in the railcar longitudinal direction so as to support one of both railcar width direction end portions (4a) of the cross beam (4) and including both longitudinal direction end portions (30c) respectively supported by the axle boxes (8). The plate spring unit (30) includes a plurality of plate springs (41 and 42) configured to elastically deform in a thickness direction that is an upper-lower direction. The plurality of plate springs (41 and 42) are arranged so as to be lined up in a width direction perpendicular to the longitudinal direction and the thickness direction.