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Study on the Experiment of the Stability of Railway Freight Cars Running on Sharp Curves of Jingcheng Line

Author: ShenMengQing
Tutor: LiuZuoYi
School: Beijing Jiaotong University
Course: Transportation Planning and Management
Keywords: Small radius curves Derailment coefficient Wheel load reduction rate Center of gravity height limit
CLC: U270.1
Type: Master's thesis
Year: 2011
Downloads: 28
Quote: 0
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Abstract


Gravity center height limit is one of China's railway cargo loading basic technical conditions . According to China's existing railway Load Securing rules \The development of standards is the lack of a system test . With the improvement of the level of railway technology , continuous improvement of the performance of the trucks existing heavy vehicle center of gravity limits the height requirement appears to be too conservative , restricting the full use of China 's railway transport capacity . Therefore, in the increasingly tense environment railway capacity , scientifically formulated gravity center height limit productivity is of great significance to improve the loading capacity of the vehicle , the liberation of the railway . Small radius of the curve is the weak link in the railway line , low operating speed of trucks in terms of poor traveling conditions for the adverse conditions . Scientifically formulated heavy vehicle center of gravity height limit must be small radius curves operating conditions of the vehicle through the in-depth study . Of this research work is the response to this issue and expand . The derailment coefficient , wheel load reduction rate criteria , through statistical analysis of experimental data to study the operational stability of our general-purpose trucks through small radius curves . This paper first introduces the status quo of research at home and abroad , the state from the line , the three angles of the vehicle structure and the use of analysis of the main factors to affect the safe operation of the vehicle , the introduction of the derailment coefficient model and wheel load reduction model . Then , based on a large number of test data from the Beijing-Chengde line , vehicle dynamics determination and mathematical statistics, two methods , respectively, of the van in different curve radius and speed through the small radius curves derailment coefficient and wheel load reduction . On this basis , we investigate the stability index and speed , ultra-high , and the relationship between over ultra-high . The article summed up the final conclusions of consistency , asked the gravity center height 2400mm, cargo center of gravity of the lateral shift 150mm ( or 100mm ) Universal truck safety technical conditions in the small radius curves .

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CLC: > Transportation > Rail transport > Vehicle Engineering > General issues > Vehicle theory and experiment
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