Ergonomically based design of tractor control tools |
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| Affiliation: | 1. Department of Biosystems Engineering, University of Tabriz, Tabriz, Iran;2. Department of Occupational Health and Ergonomics, Tabriz University of Medical Sciences, Tabriz, Iran;1. AICRP on Farm Implements and Machinery, Central Institute of Agricultural Engineering, Nabi-bagh, Bhopal 462 038, India;2. Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721 302, India;1. LUNAM Université, Ecole Centrale de Nantes, IRCCyN, 1 rue de la Noë, 44300 Nantes, France;2. Engineering Design, Industrial Engineering, and Mechanical Engineering, The Pennsylvania State University, 213 Hammond Building, University Park, PA 16802, USA;1. Agricultural Machinery Engineering Department, Shahr-e Kord University, Shahr-e Kord, Iran;2. Department of Ergonomics, Tabriz University of Medical Sciences, Tabriz 51666, Iran;1. Department of Mechanical Engineering, SKN Sinhgad College of Engineering, Pandharpur 413304, Maharashtra, India;2. Department of Mechanical Engineering, Atharva College of Engineering, Mumbai 400095, Maharashtra, India;1. IMAMOTER Institute for Agricultural and Earth-moving Machines of C.N.R (Italian National Research Council), Strada delle Cacce 73, 10135 Turin, Italy;2. DISAFA (Department of Agricultural, Forest and Food Sciences and Technologies), Largo P. Braccini 2, 10095 Grugliasco, Turin, Italy |
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| Abstract: | Musculoskeletal injuries are well-known disorders among the agricultural tractor operators. Overexertion is a critical factor which can agitate these injuries. Physical body characteristics should be measured for an ergonomically best-fit-optimal design for the operators. In this study, a designed setup was employed to derive the applied forces by tractor operators on the control tools. The different muscle strengths including leg/foot strength, hand push/pull strength, and torque strength applied by both hands were measured. A comparison was made for the obtained values for different strengths by considering the effects of hand dominance. The obtained data were used to estimate the maximum allowed forces in these tools. In contrast to the previous studies, the minimum allowed actuating forces of the pedals were calculated using reasonable assumptions. These values could provide more comfort and less exhaustion for the tractor operators. The obtained ranges were benchmarked against corresponding recommended values in some standards (ISO, ISIRI, and ASABE family). The results revealed the unsuitability of evaluated standards for a proper design and the excessive overestimation of those recommended values (in some cases more than 3 times). In all of the design procedure, a suitable attention was paid to accommodate it with more than 90% of target population.Relevance to industryA prosperous industry which considers ergonomic factors in the design of agricultural machine workplace can overcome the disorders and generate more comfort. Evaluating more exact mechanical forces can result in a suitable design of workplace. |
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| Keywords: | Actuating force Ergonomics Isometric muscular strength Overexertion |
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