Preliminary identification and evaluation of parameters affecting the capacity of the operator-earthmoving machine system
Elżbieta Radziszewska-Zielina
Section of Technology and Building Management; Faculty of Civil Engineering; Cracow University of Technology (Poland)
Anna Sobotka
Department of Geomechanics, Civil Engineering and Geotechnics; Faculty of Mining and Geoengineering; AGH University of Science and Technology in Cracow (Poland)
https://orcid.org/0000-0002-4477-8821
Edyta Plebankiewicz
Section of Technology and Building Management; Faculty of Civil Engineering; Cracow University of Technology (Poland)
Krzysztof Zima
Section of Technology and Building Management; Faculty of Civil Engineering; Cracow University of Technology (Poland)
https://orcid.org/0000-0001-5563-5482
Abstract
Without reliable data on the time of work of construction machines it is impossible to calculate the cost of the investment or the time limit for its implementation. Machine capacity is affected by many factors resulting from both the technical capabilities of a machine (e.g. the engine and bucket capacity) and work environment (e.g. soil loosening and weather conditions). Capacity is also influenced by factors affecting the operator (e.g. health condition, stress, fatigue). Therefore, it is appropriate to use the concept of the operator-machine system.
The current system for the standards of machine working time collected in catalogues of capital expenditures is outdated (a lack of modern materials, technology and equipment currently used). It does not take into account all possible weather conditions, labour conditions and soil and water conditions. The result of this state of affairs may be overestimation or underestimation of an investment.
On the basis of the conducted research it may be concluded that the greatest impact on the capacity of the operator-earthmoving machine system is exerted by parameters associated with the psychophysical condition of the operator (experience, fatigue, health and motivation of the operator) and the technical parameters of the machine (technical condition and theoretical technical capacity). Weather conditions, particularly air humidity, affect the performance to the smallest extent.
Keywords:
operator-machine system, earthworks, capacity, uptimeReferences
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Authors
Elżbieta Radziszewska-ZielinaSection of Technology and Building Management; Faculty of Civil Engineering; Cracow University of Technology Poland
Authors
Anna SobotkaDepartment of Geomechanics, Civil Engineering and Geotechnics; Faculty of Mining and Geoengineering; AGH University of Science and Technology in Cracow Poland
https://orcid.org/0000-0002-4477-8821
Authors
Edyta PlebankiewiczSection of Technology and Building Management; Faculty of Civil Engineering; Cracow University of Technology Poland
Authors
Krzysztof ZimaSection of Technology and Building Management; Faculty of Civil Engineering; Cracow University of Technology Poland
https://orcid.org/0000-0001-5563-5482
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