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Railway Investigation heavy goods vehicles using the coupler and Performance Improvement

Author: MengQingMin
Tutor: LuBiHong；JiangYan
School: Dalian Jiaotong University
Course: Vehicle Engineering
Keywords: Coupler Failure Analysis Performance improvement Overloaded truck
CLC: U270.34
Type: Master's thesis
Year: 2008
Downloads: 158
Quote: 2
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Abstract


Along with the development of this heavy duty truck, cycling load quantity, marshalling, and constantly improve the operation speed and 20000 tons of heavy-duty train operation organization, in particular, to the overloaded truck brought unprecedented pressure with 16/17 type coupler, coupler fault increases gradually. Paper on the basis of the theory of modern quality engineering, through to the 16/17 type coupler using the maintenance situation of research, concluded that 16/17 type coupling hook, hook tongue end pin hole drawing surface traction S surface and hook tail frame corner crack is currently overloaded truck after coupling the main fault. Through the fault samples are chemical composition, mechanical properties, metallographic analysis and the change of working condition of use, find out the cause of the fault form the above, and combined with the F type coupling technology, from two aspects of structure and manufacturing process, put forward the corresponding improvement plan; Paper based on the finite element strength analysis and fatigue life assessment of the improvement plan and test verification, proved the feasibility of the improved scheme. The improvement scheme and measures are passed the ministry of railways organizes technical review, has been successfully applied.

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CLC: > Transportation > Rail transport > Vehicle Engineering > General issues > Body construction and equipment > Coupler,buffer device
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