|Table of Contents|

Influence of locomotive key parameters on coupler rotation angle and locomotive running safety(PDF)

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

Issue:
2013年03期
Page:
47-52
Research Field:
载运工具运用工程
Publishing date:

Info

Title:
Influence of locomotive key parameters on coupler rotation angle and locomotive running safety
Author(s):
XU Zi-qiang;  LUO Shi-hui;  MA Wei-hua;  WU Qing
State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
Keywords:
heavy-haul locomotive;  dynamics model;  coupler rotation angle;  wheelset lateral force;  structure parameters
PACS:
U260.34
DOI:
-
Abstract:
Aimed at coupler rotation performance under compressive condition, the relationship between locomotive structure parameters and coupler rotation angle was analyzed, a train dynamics model consisting of three new-type 33 t axle-load C0-C0 configuration heary-haul locomotives and two round-pin coupler systems with coupler shoulder characteristic and hysteretic draft gear was established, and the effect of locomotive key structure parameters on coupler rotation angle and train running performance was studied under compressive condition. Calculation result shows that when coupler free rotation angle is 8°, its actual rotation angle is less than 8° under longitudinal compression, coupler shoulder does not work, the coupler-stabilized force is provided by secondary stop, so locomotive suffers a significant lateral component force, which leads to wheelset lateral force out of limit. Increasing the clearance of secondary stop or decreasing the distance between front and rear stops can increase the rotation angle of coupler, decrease wheelset lateral force, at last improve the running safety of train. So the matching relationship between locomotive key structure parameters and coupler free rotation angle should be considered in the selecting couplers of heavy-haul train. 3 tabs, 8 figs, 16 refs.

References:

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Last Update: 2013-07-30