公开(公告)号：US20230132924A1

公开(公告)日：2023-05-04

申请号：US17781042

申请日：2021-04-07

申请人： CRRC QINGDAO SIFANG CO., LTD.

发明人： Yonghua FENG ,  Mingxing LI ,  Hao YIN ,  Xin YANG ,  Junfeng ZHOU

IPC分类号： B61F5/30 ,  B61C9/00 ,  B61F3/04 ,  B61F5/52

摘要： A bogie of a rail vehicle includes a frame, which includes two box-shaped longitudinal beam main bodies and a transverse beam main body; a wheelset, which includes an axle box, an axle and wheels mounted at two ends of the axle; a drive system, which at least includes a gearbox and a drive motor. Practice has proved that the two axle boxes arranged on the inner sides of the two longitudinal beam main bodies can reduce a volume by about 10%, and reduce a weight by about 10% to 15%, which can further reduce air resistance, and realize energy saving and emission reduction. The longitudinal beam main body is located on an inner side of a wheel, a span of the two the longitudinal beam main bodies is reduced, and the torsional rigidity of the frame is reduced, which is beneficial to improving a curve passing capacity.