Interactive energy consumption parameters of walking draglines in Turkish coal mines

Özdoğan, Metin
This thesis presents and discusses the production and direct current motor performances of walking draglines from equipment excavating ease perspective operating at some Turkish surface coal mines based on the on-board monitoring research carried out with portable laboratory type monitor. The thesis investigates and interprets interactive excavating energy consumption of the equipment at ground engagement as a reaction of equipment to varying bench digging conditions; analyzes cycle time and energy components and bucket fill phase segments. This interactive excavating effort can be determined by recording armature voltage and current feedback signals of direct current drive motors of walking draglines. It also reviews and discusses the earlier studies on the topic. It seeks the interactive excavating energy parameters that may reflect the equipment excavability best and investigates and discusses the compatibility of the excavating parameters of the draglines monitored and searches the criteria for comparability of the parameters. inFurthermore, it studies the relationships among the interactive energy consumption parameters, production parameters, equipment, bench and powder parameters by plotting various parameters against each other over a specified time period and performing linear regression analysis, if applicable. According to the study, compatible dragline parameters are specific excavating energy, time normalized specific excavating energy, specific drag-in energy consumption, drag energy consumption percentage of full cycle, Based on the compatible parameters, site and equipment specific, excavating ease classifications are proposed. The research verifies that energy consumption parameters of draglines at work do reflect the relative ease of excavation encountered at the bench face, indirectly.


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Citation Formats
M. Özdoğan, “Interactive energy consumption parameters of walking draglines in Turkish coal mines,” Ph.D. - Doctoral Program, Middle East Technical University, 2002.