Half-shaft undercarriage systems – designing and operating problems

• Autorzy: Rusiński E. , Czmochowski J. , Moczko P.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper discuss designing and operating problems of half-shafts undercarriage systems of open pit machines. Example of failure of such system and investigation of its reasons are presented. Design/methodology/approach: Experimental and numerical methods were used to investigate reasons of dumping conveyor breakdown. In order to perform material evaluation fractographic and microscopic methods as well as chemical analysis, were used. Based on results of numerical simulations analysis and data coming from material evaluations the objectives are achieved. In order to prevent future similar problems, the new design of the the half-shafts steering frame was discussed as well. Findings: It was found that manufacturing and designing of the half shaft system were the main failure reasons. Such open pit machines undercarriages systems are prone to failures. Detailed analyses are required to implement half – shaft systems without risk of break-down. Recommendation is given in the paper for the single shaft system. Research limitations/implications: Friction in the supporting areas limits horizontal forces acting on safetying of the half-shaft. Sliding and static friction coefficients should be investigated in order to estimate optimal designing rules and correct forces. Practical implications: Practical implications into designing of half-shafts undercarriage systems and safetyings are given. Originality/value: The paper provides information backed by test results and evaluation, stating the nexus of causes of the dumping conveyor break-down. The numerical and experimental approaches present relationship between designing and manufacturing. The paper can be helpful for researchers and designers investigating reasons, approach methods or failures preventing methods of similar machines.

Słowa kluczowe

EN

CAD/CAM; constructional design; material; metallography

PL

CAD/CAM; projektowanie konstrukcyjne; materiał; metalografia

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2009
• Tom: Vol. 33, nr 1
• Strony: 62--69
• Opis fizyczny: Bibliogr. 20 poz., rys., tabl.

Twórcy

autor

Rusiński E.

autor

Czmochowski J.

autor

Moczko P.

• Institute of Machines Design and Operation, Wroclaw University of Technology, ul. Lukasiewicza 7/9 , 51-370 Wrocław, Poland,

Bibliografia

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