RAILCAR BOGIE AND RAILCAR INCLUDING SAME

摘要

A railcar bogie includes: a cross beam to support a carbody of a railcar; wheels at both railcar width direction sides of the bogie lined up longitudinally at each side; a pair of front and rear axles respectively at a front side and rear side in the railcar longitudinal direction to sandwich the cross beam each of the axles connect wheels located at the left side and right side of the railcar; bearings at both railcar width direction sides of each axle to rotatably support the axle; axle box portions coupled to the cross beam via elastic members to store the bearing; and plate spring portions to respectively support both railcar width direction end portions of the cross beam and both railcar longitudinal direction end portions of the plate spring portions, supported by the axle box portions. The axle box portions include a surface that supports the plate spring portion.

主权项

1. A railcar bogie comprising:
a cross beam configured to support a carbody of a railcar; wheels arranged at both railcar width direction sides of the bogie to be lined up in a railcar longitudinal direction at each of the sides; a pair of front and rear axles between which the cross beam is located and which are respectively arranged at a front side and rear side in the railcar longitudinal direction so as to extend in a railcar width direction, each of the axles connecting the wheels located at a left side and right side in the railcar width direction; bearings arranged at both railcar width direction sides of each of the axles and configured to rotatably support the axle; axle box portions coupled to the cross beam via elastic members and each configured to store the bearing; and plate spring portions extending in the railcar longitudinal direction so as to respectively support both railcar width direction end portions of the cross beam, both railcar longitudinal direction end portions of each of the plate spring portions being respectively supported by the axle box portions, wherein each of the axle box portions includes a supporting surface that supports the plate spring portion such that the plate spring portion is relatively movable, and the supporting surface is inclined toward a longitudinal direction middle portion of the plate spring portion.