Validating Measurement Structure of Checklist for Evaluating Ergonomics Risks in Heavy Mobile Machinery Cabs

Vesna Spasojević Brkić (), Mirjana Misita, Martina Perišić, Aleksandar Brkić and Zorica Veljković
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Vesna Spasojević Brkić: Faculty of Mechanical Engineering, University of Belgrade, 11000 Belgrade, Serbia
Mirjana Misita: Faculty of Mechanical Engineering, University of Belgrade, 11000 Belgrade, Serbia
Martina Perišić: Faculty of Mechanical Engineering, University of Belgrade, 11000 Belgrade, Serbia
Aleksandar Brkić: Innovation Center, Faculty of Mechanical Engineering, 11000 Belgrade, Serbia
Zorica Veljković: Faculty of Mechanical Engineering, University of Belgrade, 11000 Belgrade, Serbia

Mathematics, 2022, vol. 11, issue 1, 1-11

Abstract: Heavy mobile machinery cabs and their equipment are still not well adjusted to operators, so it is not surprising that we are still witnessing huge consequences of accidents at sites where they operate. The checklist with 39 questions, based on the previous research, is formed, and its’ measurement structure has been tested on the sample of 102 transport, construction, and mining machines, including cranes, excavators, bucket wheel excavators, bulldozers, loaders, graders, backhoe loaders, trenchers, dump trucks, and scrapers by correlation analysis, Cronbach’s alpha, Spearman-Brown and Kendall’s W coefficient, exploratory factor analysis, and confirmatory factor analysis. The results validate the measurement structure of a checklist with only 17 items and five constructs. The results show that special attention should be put to the design of armrests and working conditions/exhaust gases, which are negatively correlated to cab interior space and task visibility. All other correlations between seat characteristics, the characteristics of armrests, whole-body vibration influences, reaching commands, the characteristics of cab interior space and environments, and interpersonal relationships are positive, which means that improvements to one area lead to improvements in another. Accordingly, the proposed model should be used for the fast, efficient, and cost-effective evaluation of ergonomics risks and as a guideline for further cab design improvements.

Keywords: risk management; ergonomics; heavy mobile machinery; cabs’ design (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
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