铁道科学与工程学报2017，Vol.14Issue(3)：610-618,9.
密接式车钩连挂特性影响因素分析
Affecting factor analysis on coupling characteristic of tight-lock coupler
摘要
Abstract
Based on the theory of train longitudinal dynamics, the dynamics model of coupler impact coupling was built by using ADAMS software and modified by the trolley impact test data, the relative errors of the maximum impact force and the maximum buffer displacement are no more than 3%. The effect of different impact speeds, different penalty coefficients and different spring pre-loads on tight-lock coupler coupling character were simulated by the dynamics model. Results show that: The maximum impact force and the maximum buffer displacement increase with the increase of impact speed, but not affected by penalty coefficient and spring pre-load. When the impact speed is 36 km/h, the coupler coupling process fails, and the maximum impact force is 1130.2 kN, the displacement curves of moving coupler buffer and static coupler buffer are separated, and the maximum displacements are no more than the maximum buffer stroke that is 100 mm. The coupling time increases with the increase of impact speed, and it increases with the decrease of spring pre-load. Besides that, the coupling time first increases with the increase of penalty coefficient, then decreases, and the inflection point of penalty coefficient is 1.0×105. The penalty coefficient and spring pre-load affect the coupler coupling process to some extent, when the penalty coefficient exceeds 1.0×107 or the spring pre-load is no more than 2.0 kN, the coupler coupling process fails.关键词
密接式车钩/动力学模型/台车冲击试验/连挂特性Key words
tight-lock coupler/dynamics model/trolley impact test/coupling characteristic分类
交通工程引用本文复制引用
谢俊,刘国伟,曹少晖..密接式车钩连挂特性影响因素分析[J].铁道科学与工程学报,2017,14(3):610-618,9.基金项目
国家自然科学基金重点资助项目(U1334208) （U1334208）
湖南省自然科学基金青年资助项目(2015JJ3155) （2015JJ3155）
