公开(公告)号：EP4052988A1

公开(公告)日：2022-09-07

申请号：EP21895920.3

申请日：2021-04-07

申请人： CRRC Qingdao Sifang Co., Ltd.

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

IPC分类号： B61F5/52

摘要： A rail vehicle and a bogie are provided according to the present application. A frame according to the present application is configured so that a box body has an H-structure, two axle boxes are located on corresponding inner sides of two longitudinal beam main bodies, which can reduce a transverse spacing size. 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. In addition, mounting by elastic suspension forms vibration decoupling with the frame, which is beneficial to realizing the decoupling of the weight between large springs and improving the critical speed.

公开(公告)号：EP4286238A1

公开(公告)日：2023-12-06

申请号：EP22773873.9

申请日：2022-01-05

申请人： CRRC Qingdao Sifang Co., Ltd.

发明人： YANG, Dongxiao ,  FENG, Yonghua ,  FENG, Jun ,  ZHANG, Guoping ,  LIANG, Haixiao ,  LI, Guiyu ,  WANG, Qiang

IPC分类号： B61F5/24

摘要： The present application provides an anti-side-rolling damping vehicle-end device and a rail vehicle. The anti-side-rolling damping vehicle-end device comprises: a pair of damping mechanisms, which are adapted to respectively being installed on a pair of end walls of a pair of connected vehicle bodies that are arranged opposite each other, the pair of damping mechanisms being arranged on two sides of the axis of the vehicle bodies in a lengthwise direction, respectively; and a connecting rod, wherein two ends of the connecting rod are hinged to the pair of damping mechanisms, respectively, and the length of the connecting rod is greater than a vertical movement displacement of any vehicle body, such that side-rolling movement and vertical movement of the vehicle body is decoupled. By means of the anti-side-rolling damping vehicle-end device, it can be ensured that the length of the connecting rod connected between a pair of vehicle bodies can be far greater than a vertical movement displacement of each vehicle body, such that the movement of the damping mechanisms can be limited by means of the connecting rod in different movement processes of the vehicle body, thereby at least achieving the decoupling between side-rolling movement and vertical movement of the vehicle body. Therefore, side-rolling vibration can be suppressed more reliably while vertical stability is not affected, and the running stability and the riding comfort of a rail vehicle are greatly improved.

公开(公告)号：EP4032778A1

公开(公告)日：2022-07-27

申请号：EP21849667.7

申请日：2021-03-30

申请人： CRRC Qingdao Sifang Co., Ltd.

发明人： MA, Lijun ,  TAO, Guidong ,  ZHOU, Pingyu ,  WANG, Xu ,  QIAO, Qingfeng ,  ZHANG, Zhenxian ,  FENG, Yonghua

IPC分类号： B61F7/00

摘要： A wheel mounting bushing (20) for a variable-gauge wheelset. The outer circumferential surface of a first end of the bushing (20) is provided with a wheel mounting seat (24); the outer circumferential surface of a second end of the bushing (20) is provided with an outer spline (22) extending in the axial direction of the bushing; the inner circumferential surface of the second end of the bushing (20) is provided with a first non-self-locking thread (21). The wheel mounting bushing (20) for a variable-gauge wheelset facilitates sliding of the wheel in the axial direction of the axle to achieve gauge change, the connection structure for the axle and the wheel is simple, and the reliability of gauge change is high. Also provided is a variable-gauge wheelset.

公开(公告)号：EP4257448A1

公开(公告)日：2023-10-11

申请号：EP21899501.7

申请日：2021-04-06

申请人： CRRC Qingdao Sifang Co., Ltd.

发明人： MA, Lijun ,  ZHANG, Zhenxian ,  FENG, Yonghua ,  ZHAO, Changlong ,  LIU, Shaoqing ,  LIANG, Haixiao ,  WEI, Jiaqi ,  ZHAO, Gumeng ,  LIANG, Junhai ,  ZHANG, Zhiyi ,  LIU, Yaping

IPC分类号： B61K9/12

摘要： A railway vehicle, and a control method and system for a tread profile of a railway vehicle. The control method comprises: step S1, obtaining a lateral acceleration signal of a wheel set; step S2, determining whether a first number of continuous peak values greater than or equal to a first set value present in the lateral acceleration signal or not, and if yes, executing the following step S3; step S3, controlling a tread modification device of a corresponding wheel set to enter a modification mode; step S4, determining whether a first action condition is satisfied or not, and if yes, executing the following step S5; step S5, controlling the tread modification device to perform online state repair on tread profiles of wheels of the corresponding wheel set; step S6, determining whether a second number of continuous peak values less than or equal to a second set value present in the lateral acceleration signal or not, and if yes, executing the following step S7, the second set value being less than the first set value; and step S7, controlling the tread modification device of the corresponding wheel set to exit the modification mode. By means of the control method, an off-line lathing cycle of wheels can be extended.