|Table of Contents|

Review on key technologies of 400 km?h-1 variable gauge EMUs bogies(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2021年01期
Page:
358-368
Research Field:
　　　综述专刊
Publishing date:

Info

Title:
Review on key technologies of 400 km?h-1 variable gauge EMUs bogies
Author(s):
HUANG Zhi-hui1;  HU Fei-fei1;  LI Guo-dong2;  ZHOU Dian-mai2
(1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. National Engineering Technology and Research Center for System Integration of Railway Vehicle,CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130062, Jilin, China)
Keywords:
EMUs;  variable gauge bogie;  axle box bearing;  ground track changing device;  motor suspension mode;  clearance
PACS:
U270.2
DOI:
10.19818/j.cnki.1671-1637.2021.01.017
Abstract:
To address the problems in the development and design of 400 km·h-1 variable gauge EMUs bogies in China, five important problems for Chinese high-speed variable gauge EMUs bogies(i.e., traction motor mounting, type of wheel set drive, axle box bearing, track changing mechanism, foundation brake, and sanding device)were studied based on the mature variable gauge bogie technologies developed in other countries. Corresponding solutions to the problems discovered in this study were also proposed. Research result shows that both the electric motor suspension and body suspension can make room for the installation of brake disc, but those will be relative displacements between the motor and the driven axles, which requires motion compensation measures. To meet the requirements of axle size and rotating speed of 400 km·h-1 variable gauge EMUs, it is necessary to develop new axle box bearings. The existence of track changing mechanism will increase the unsprung mass of bogie, so the developed variable gauge bogie should adopt a lightweight design as much as possible. Considering the effects of braking efficiency and caliper follow-up on the braking effect of variable gauge bogie, the basic braking should be given priority to the axle disc braking, followed by the wheel disc braking. Sanding device shall not be used for bogie of EMU, if it is absolutely necessary, considering using a hose connection between the sandbox and the sandblasting nozzle to adapt to the motion compensation when the gauge changes. While researching and developing the variable gauge bogie, attention should be paid to the wide use of ground track changing device, so that they can also meet the requirements of simplicity and standardization. The development of variable gauge bogie must consider the clearance requirements of different gauge railways, the greater the gauge difference, the higher the clearance requirement. On the rolling vibration test-bed of Southwest Jiaotong University, the maximum running speed of the developed EMU reaches 602 km·h-1 under the condition of applying line spectrum excitation of Chinese passenger dedicated line and it was successfully launched in October 21, 2020. 2 tabs, 10 figs, 36 refs.

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Last Update: 2021-03-20