公开(公告)号：US10393628B2

公开(公告)日：2019-08-27

申请号：US15325062

申请日：2015-10-27

Applicant: CRRC QINGDAO SIFANG CO., LTD.

Inventor： Zhixiang Liu ,  Wanjing Wang ,  Zhiqiang Zhang ,  Yiping Chen ,  Weihua Wang

IPC: G01M17/08 ,  G01M17/007

Abstract: A rail vehicle collision test rig used for a collision test on a tested vehicle is provided, and includes: a track configured to support and guide the tested vehicle; a small vehicle configured to push the tested vehicle; a drive motor configured to drive the small vehicle to advance and arranged at a first end of the track; a first rotating hub arranged at the first end of the track and connected to the drive motor; a brake motor configured to brake the small vehicle; a second rotating hub arranged at the second end of the track and connected to the brake motor; a connecting rope wound on the first rotating hub and the second rotating hub; a detector configured to detect a velocity and a position of the tested vehicle; and a controller connected to the detector and is allowed to be in communication with the detector.

公开(公告)号：US12017539B2

公开(公告)日：2024-06-25

申请号：US18031897

申请日：2021-05-24

Applicant: CRRC QINGDAO SIFANG CO., LTD.

Inventor： Donghua Wu ,  Yanxiao Lei ,  Zhiqiang Zhang ,  Yunfei Wang ,  Xinmai Gao

IPC: B60L13/10 ,  B61C17/00

CPC classification number: B60L13/10 ,  B61C17/00

Abstract: A voltage control method. A train traveling speed can be acquired; a target transformation ratio corresponding to the train traveling speed is determined according to correspondences between train traveling speeds and transformation ratios, the transformation ratio being a ratio of an input voltage to an output voltage; an input voltage is then transformed according to the target transformation ratio to obtain an output voltage, the output voltage being used for driving a train to travel. The correspondences between train traveling speeds and transformation ratios are obtained according to correspondences between train traveling speeds and train traction forces at different transformation ratios. By means of the method, the most suitable transformation ratio can be provided according to a traveling speed of a maglev train, thereby increasing the traction force of the maglev train and improving running efficiency.

公开(公告)号：US10401257B2

公开(公告)日：2019-09-03

申请号：US15504626

申请日：2015-09-22

Applicant: CRRC QINGDAO SIFANG CO., LTD.

Inventor： Yundong Han ,  Dawei Chen ,  Peng Lin ,  Shanqiang Fu ,  Weibin Wang ,  Xiaojun Deng ,  Hongju Cui ,  Shaoqing Liu ,  Zhiqiang Zhang

IPC: G01M9/00 ,  G01M17/10 ,  G01N21/64 ,  G01M9/06

Abstract: A device for testing a flow field state within a high-speed train bogie cabin; the periphery of a bogie consists of apron plates and end plates; the test device comprises: a plurality of test points evenly distributed on the inner walls of the apron plates and end plates, a plurality of image pickup devices installed in the bogie cabin, a smoke generator communicating with an inner cavity of the bogie via pipes, and one or more smoke exits provided on top of the bogie; each test point is connected to a test tape, and the distance between the test points is more than twice the test tape length. The test device monitors and records in real time the air flow direction at the end plates and apron plates by means of viewing of a fluorescent test tape. Also provided is a method of testing a flow field state within a high-speed train bogie cabin.