Dynamics, failures, redesigning and environmentally friendly technologies in surface mining systems

Disaster of the bucket wheel excavator caused by extreme environmental impact: Consequences, rescue and reconstruction

“…Even in regular exploitation conditions, the outstandingly dynamic and stochastic character of the loads caused by soil impacts provides fertile ground for the occurrence of failures of structures or substructures [6][7][8][9][10][11][12] as well as mechanism parts [13][14][15][16][17][18][19][20][21]. Apart from that, BWEs can also be subjected to extraordinary environmental impacts which inevitably lead http to the occurrence of the so-called 'environment-in' defects [22].…”

Identification of Crack Initiation Cause in Pylons Construction of the Excavator SchRs630

“…FEM is a universal method that can help in solving various problems [2][3][4][5][6][7][8][9][10][11][12][13].…”

“…There are many examples of failure of the bearing structure and mining machinery structural parts [2][3][4][5][6][7][8]. The object of observation in this paper is a crack that has occurred on gusset plate of pylon vertical truss of bucket wheel excavator (BWE) SchRs630.…”

“…1) is operating at Tamnava East Field, Mining Basin Kolubara since 1995. In case of failure it is necessary to apply an efficient system for the diagnosis and to perform a number of steps to enable machine to operate [2,3]. Firstly, when it comes to failure it is necessary to find the cause of the failure.…”

Comments on “Determination and Analysis of the Theoretical Production of a Bucket Wheel Excavator” / Uwagi I Komentarze Do Pracy: ”Określanie I Analiza Teoretycznej Wydajności Pracy Koparki Wielonaczyniowej Kołowej”

“…1, encompasses all relevant structural parameters as well as the duty cycle parameters that are essential for the analysis of the kinematics and the cutting geometry. Based on that model, the RADBAG software was in-house developed and successfully used in (Bošnjak et al, 2006a(Bošnjak et al, , 2006b(Bošnjak et al, , 2008(Bošnjak et al, , 2009(Bošnjak et al, , 2012a(Bošnjak et al, , 2012bArsić et al, 2011) for defining the BWE external load induced by resistance to excavation.…”