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    BOGIE SUSPENSION TRACTION DEVICE FOR USE IN LOW-FLOOR ARTICULATED RAIL VEHICLE
    1.
    发明公开
    BOGIE SUSPENSION TRACTION DEVICE FOR USE IN LOW-FLOOR ARTICULATED RAIL VEHICLE 审中-公开

    公开(公告)号：EP3459809A1

    公开(公告)日：2019-03-27

    申请号：EP17802067.3

    申请日：2017-05-15

    申请人： CRRC Qingdao Sifang Co., Ltd.

    发明人： ZHANG, Huijie ,  ZHOU, Yeming ,  ZHOU, Jinming ,  ZHOU, Pingyu ,  WANG, Shi ,  LIU, Yuwen

    IPC分类号： B61F5/04 ,  B61F5/12 ,  B61F5/50

    摘要： The present disclosure relates to a suspension traction device of a low floor articulated rail vehicle, which comprises swing bolster mechanisms, traction rod mechanisms, primary springs and secondary springs. Two swing bolster mechanisms and two traction rod mechanisms are provided, two swing bolster mechanisms are provided respectively in the middle of two groups of wheel-sets. Each swing bolster mechanism is connected to the frame by a set of traction rod mechanisms and is connected to the vehicle body by means of a rotary mechanism. The disclosure has the advantages of simple and compact structure and light weight. It not only realizes the transmission of the traction and the braking force when the vehicle is running, carries the vertical, horizontal and vertical load, which greatly improves the small curving performance of the vehicle, but also reduces the height of the floor surface and the driving performance of the vehicle has also been greatly improved.

    FRAME, BOGIE, AND RAIL VEHICLE
    2.
    发明公开
    FRAME, BOGIE, AND RAIL VEHICLE 审中-实审

    公开(公告)号：EP4406809A1

    公开(公告)日：2024-07-31

    申请号：EP22872183.3

    申请日：2022-09-26

    申请人： CRRC Qingdao Sifang Co., Ltd.

    发明人： DING, Sansan ,  GAO, Yulong ,  SUN, Houli ,  WANG, Xiaoming ,  ZHANG, Xiongfei ,  CHEN, Dongfang ,  WANG, Shi ,  ZHANG, Lianhe ,  XIAO, Peng ,  ZHANG, Yi ,  RUAN, Dawei

    IPC分类号： B61F5/52

    CPC分类号： Y02T30/00

    摘要： A frame, a bogie, and a rail vehicle. The frame comprises two side beams and two cross beams connected between the two side beams; air springs of the bogie are mounted on the side beams; at least one auxiliary beam is connected between the two cross beams; the inner cavity of the auxiliary beam is divided into a first cavity and a second cavity; the first cavity is communicated with the inner cavity of one of the cross beams so as to jointly serve as an additional air chamber of one of the air springs, and the second cavity is communicated with the inner cavity of the other of the cross beams so as to jointly serve as an additional air chamber of the other of the air springs. In the present solution, the auxiliary beam of the bogie frame is used as a connecting member for connecting the front and rear two cross beams and is also divided into the first cavity and the second cavity, and the first cavity and the second cavity can be communicated with the inner cavities of the cross beams so as to serve as the additional air chambers of the air springs mounted on the bogie frame, such that the volume of the additional air chambers is increased, and the structure of the frame is simplified.