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http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-article-BOS5-0021-0005

Czasopismo

Journal of Achievements in Materials and Manufacturing Engineering

Tytuł artykułu

Investigations of causes of dumping conveyor breakdown

Autorzy Rusiński, E.  Czmochowski, J.  Moczko, P. 
Treść / Zawartość http://www.journalamme.org
Warianty tytułu
Języki publikacji EN
Abstrakty
EN Purpose: The main purposes of the paper are to discuss designing and exploitation problems of machines used in strip mines and investigation of its reasons based on steering frame breakdown of the dumping conveyor. Design/methodology/approach: Numerical (FEM) and experimental approach was used to investigate reasons of the breakdown. Fractographic and microscopic evaluation and chemical analysis, were used to perform material evaluations. The objectives are achieved by analysis of the numerical simulations results and data coming from material evaluations. Additionally the new design of the steering frame was discussed in order to prevent future similar problems in the half-shafts systems. Findings: The causes of break-down of the steering frame were found. Designing and manufacturing problems were the main reasons of the failure. The undercarriages half shafts systems of the open pit machines are prone to break-downs. They require detailed analysis to be successfully implemented into steering system. Recommendations for the single shaft system are given in the paper. Research limitations/implications: There are horizontal forces acting on safetying in the half-shaft undercarriage systems, which are limited by the friction in the supporting areas. Investigations of the static and sliding friction coefficients should be performed to estimate correct forces and optimal designing rules. Practical implications: The study provides practical implication into designing of half-shafts undercarriage systems and their safetyings. Discussed design of the safetying should be redesigned or the half-shaft system should be changed into one shaft design. Originality/value: The paper provides information backed by evaluation and test results, stating the nexus of causes of the dumping conveyor failure. The experimental and numerical approaches show relationship between designing and manufacturing process of machines. This can be helpful for the designers and researchers looking for reasons, methods of investigations or how to prevent failures of similar machines.
Słowa kluczowe
PL CAD/CAM   projektowanie konstrukcji   materiał   metalografia  
EN CAD/CAM   constructional design   material   metallography  
Wydawca International OCSCO World Press
Czasopismo Journal of Achievements in Materials and Manufacturing Engineering
Rocznik 2007
Tom Vol. 24, nr 1
Strony 267--274
Opis fizyczny Bibliogr. 20 poz., fot., rys., tab.
Twórcy
autor Rusiński, E.
autor Czmochowski, J.
autor Moczko, P.
Bibliografia
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[18] E. Rusinski, J. Czmochowski, P. Moczko, Numerical and experimental analysis of a mine's loader boom crack, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 273-276.
[19] Y. Zhang, D. Redekop, Shell element simulation of the push method of tube bending, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 301-304.
[20] E. Rusinski, A. Kopczynski, J. Czmochowski, Tests of thin-walled beams joined by spot welding, Journal of Materials Processing Technology 157-158 (2004) 405-409.
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