Safety of the shaft-wheel assembly of electric locomotives

Innovative Ideas in Science 2016

Todic, M.^1 ; Golubovic-Bugarski, V.^1

University of Banjaluka, Faculty of Mechanical Enginering, Stepe Stepanovica 71, Banjaluka

78000, Bosnia and Herzegovina^1

关键词: Contact surface;    Exposed to;    Geometric measures;    Material loss;    Quality and safeties;    Shaft crack;    Tangential stress;    Wheel assembly;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/200/1/012024/pdf
DOI  :  10.1088/1757-899X/200/1/012024

来源: IOP

【 摘 要 】

Shafts of electric locomotives are exposed to complex normal and tangential stresses during its exploitation. These stresses could have extremely high level producing the breakage of the shaft. It is well known that shafts have much longer service life than wheels. However, since the stresses in shaft's material are high, it is possible to micro-cracks appear and propagate until the shaft's breakage. The breakage of the shaft may cause the great human and material losses. Because of that, during manufacturing these assemblies it must be taken into account all parameters which can initiate shaft crack. Geometric measure of seating and shaft are recommended by UIC regulations having great influence to quality and safety of realized assembly. The influence of contact surfaces and their lubrication during manufacturing the shaft - wheel assembly is shown in this paper.