Ergonomic Design of Shovel to Improve Productivity in Sorghum Silage Industry

Dino Caesaron, Farell Ardani, Yudistira Yudistira, Ilma Mufidah

Abstract


 

Abstract

Sorghum silage production is an important process in the animal feed industry. However, manually transferring chopped sorghum with existing shovels can increase workers' risk of musculoskeletal disorders. This study aimed to design an ergonomic shovel to reduce the risk of injury and improve work efficiency. The shovel design was developed based on worker anthropometric data and the Quality Function Deployment (QFD) approach. Ergonomic evaluation was conducted using the Rapid Entire Body Assessment (REBA) method, while productivity was measured based on worker energy consumption and work capacity. The results showed that the ergonomic shovel reduced the ergonomic risk score from 11 to 4, indicating a significant improvement in work posture. The average heart rate of workers after work decreased from 195–201 beats per minute to 118–122 beats per minute. Productivity increased from 1.06–1.13 kg/kcal to 4.09–4.41 kg/kcal, indicating increased work energy efficiency. The shovel's ergonomic design has a 72 cm handle length, 3 cm handle diameter, and stainless steel material, which has proven more comfortable to use and reduces the worker's physiological burden. This study's results confirm that applying ergonomic principles in designing work tools can improve worker welfare and the efficiency of the sorghum silage industry. Further test is needed for validation on a broader scale.

Keywords: ergonomics, musculoskeletal disorders, productivity, sorghum silage, tool design

 

Abstrak

Produksi silase sorgum merupakan proses penting dalam industri pakan ternak. Aktivitas pemindahan manual irisan sorgum dengan sekop eksisting dapat meningkatkan risiko gangguan muskuloskeletal pada pekerja. Penelitian ini bertujuan merancang sekop ergonomis untuk mengurangi risiko cedera dan meningkatkan efisiensi kerja. Desain sekop dikembangkan berdasarkan data antropometri pekerja serta pendekatan Quality Function Deployment (QFD). Evaluasi ergonomi dilakukan menggunakan metode Rapid Entire Body Assessment (REBA), sedangkan produktivitas diukur berdasarkan konsumsi energi dan kapasitas kerja pekerja. Hasil penelitian menunjukkan bahwa sekop ergonomis menurunkan skor risiko ergonomi dari 11 menjadi 4 yang mengindikasikan perbaikan postur kerja yang signifikan. Rata-rata denyut nadi pekerja setelah bekerja menurun dari 195–201 denyut per menit menjadi 118–122 denyut per menit. Produktivitas meningkat dari 1,06–1,13 kg/kkal menjadi 4,09–4,41 kg/kkal, menunjukkan peningkatan efisiensi energi kerja. Desain ergonomis sekop dengan panjang gagang 72 cm, diameter pegangan 3 cm, serta material baja tahan karat terbukti lebih nyaman digunakan dan mengurangi beban fisiologis pekerja. Hasil penelitian ini memastikan bahwa penerapan prinsip ergonomi dalam desain alat kerja dapat meningkatkan kesejahteraan pekerja dan efisiensi industri silase sorgum. Pengujian lebih lanjut diperlukan untuk validasi dalam skala yang lebih luas.

Kata kunci: desain alat, ergonomi, gangguan muskuloskeletal, produktivitas, silase sorgum

 


Keywords


ergonomics; musculoskeletal disorders; productivity; sorghum silage; tool design; desain alat; ergonomi; gangguan muskuloskeletal; produktivitas; silase sorgum

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References


Abaeian, H., Moselhi, O., & Al-Hussein, M. (2016). System dynamics model application for ergonomic assessment of manual material handling tasks. Modular and Offsite Construction (MOC) Summit Proceedings. https://doi.org/10.29173/mocs30

Ashby, M. F. (2016). Materials Selection in Mechanical Design (5th ed.). Oxford: Butterworth-Heinemann.

Cahyani, A. P., & Ramadhani, S. H. (2024). Optimizing Workplace and Employee Safety Through Ergonomics: Scoping Review. SHS Web of Conferences, 189, 1007. https://doi.org/10.1051/shsconf/202418901007

Canadian Centre for Occupational Health and Safety. (2024). Ergonomics: Shovelling. Retrieved from Canadian Centre for Occupational Health and Safety website: https://www.ccohs.ca/oshanswers/ergonomics/shovel.html

Chakrabortty, K., Oommen, S., & Mathew, B. (2023). Importance of ergonomics for healthcare workers. International Journal of Science and Healthcare Research, 8(3), 52–55. https://doi.org/10.52403/ijshr.20230310

Chaudhary, D., Mehta, A. K., Sharma, A., Singh, S., & Aman. (2022). Ergonomic evaluation of developed manual fruit harvesting device. Asian Journal of Dairy and Food Research. https://doi.org/10.18805/ajdfr.DR-1922

Das, B. (2020). Effects of awkward posture on Work-Related Musculoskeletal Disorders (WMSDs) among Sawmill workers in India. Journal of Occupational Health and Epidemiology, 9(3), 158–166. https://doi.org/10.29252/johe.9.3.158

Das, B., & Gangopadhyay, S. (2012). Prevalence of Musculoskeletal Disorders and Physiological Stress Among Adult, Male Potato Cultivators of West Bengal, India. Asia Pacific Journal of Public Health, 27(2), NP1669–NP1682. https://doi.org/10.1177/1010539511421808

Dianat, I., Asadollahi, S., & Nedaei, M. (2017). Ergonomic investigation of bent-handle fabric scissors. Work, 57(4), 529–534. https://doi.org/10.3233/WOR-172583

Esmaeili, R., Shakerian, M., Esmaeili, S. V., Jalali, M., Pouya, A. B., & Karimi, A. (2023). A multicomponent quasi-experimental ergonomic interventional study: long-term parallel four-groups interventions. BMC Musculoskeletal Disorders, 24(1), 107. https://doi.org/10.1186/s12891-023-06220-4

Fathallah, F. A., Tang, S. C. H., & Waters, T. (2016). Development and evaluation of ergonomic interventions for bucket handling on farms. Human Factors: The Journal of the Human Factors and Ergonomics Society, 58(5), 758–776. https://doi.org/10.1177/0018720816631902

Gallagher, S., & Heberger, J. R. (2015). The effects of operator position, pallet orientation, and palletizing condition on low back loads in manual bag palletizing operations. International Journal of Industrial Ergonomics, 47, 84–92. https://doi.org/10.1016/j.ergon.2015.03.005

Gholami, A., Yalameh, J. T., Fouladi-Dehaghi, B., Eskandari, D., & Teimori-Boghsani, G. (2020). Evaluation of the influence of education on the ergonomic risk of concrete form workers. Work, 67(4), 1007–1013. https://doi.org/10.3233/WOR-203350

Göhlich, D., Bender, B., Fay, T.-A., & Gericke, K. (2021). Product requirements specification process in product development. Proceedings of the Design Society, 1, 2459–2470. https://doi.org/10.1017/pds.2021.507

Gupta, N., Dongen, J. M. V, Holtermann, A., Beek, A. J. V. D., Stevens, M. L., & Rasmussen, C. D. N. (2022). Cost-effectiveness and return-on-investment of a participatory ergonomics intervention among childcare workers. Journal of Occupational & Environmental Medicine, 64(6), 533–539. https://doi.org/10.1097/JOM.0000000000002510

Hawari, N. M., Sulaiman, R., & Rosalam, C. M. (2023). Conceptual design, fabrication and validation on prototype of industrial ergonomic trolley-lifter for wood furniture industry. ALAM CIPTA International Journal Of Sustainable Tropical Design & Practice, 16(2), 71–78. https://doi.org/10.47836/AC.16.2.PAPER08

Hemati, K., Darbandi, Z., Kabir-Mokamelkhah, E., Poursadeghiyan, M., Ghasemi, M. S., Mohseni-Ezhiye, M., … Dehghan, N. (2020). Ergonomic Intervention to Reduce Musculoskeletal Disorders Among Flour Factory Workers. Work, 67(3), 611–618. https://doi.org/10.3233/wor-203275

Jirapongsuwan, A., Klainin-Yobas, P., Songkham, W., Somboon, S., Pumsopa, N., & Bhatarasakoon, P. (2023). The effectiveness of ergonomic intervention for preventing work-related musculoskeletal disorders in agricultural workers: A systematic review protocol. PLOS ONE, 18(7), e0288131. https://doi.org/10.1371/journal.pone.0288131

Joo, H., Lin, Z., Yesantharao, L., Formeister, E., Razavi, C., Patel, M., Carey, J., Taylor, R., &.Galaiya, D. (2023). Intraoperative neck angles in endoscopic and microscopic otologic surgeries. Otolaryngology–Head and Neck Surgery, 168(6), 1494–1501. https://doi.org/10.1002/ohn.226

Kakhki, F. D., Moghadam, A., Nieto, A., & Vora, H. (2024). Evaluating the efficacy of a passive exoskeleton for enhancing ergonomics in manufacturing. Applied Sciences, 14(13), 5810. https://doi.org/10.3390/app14135810

Karelia, B. J., Rathod, D., & Kumar, A. (2021). Assessment of posture related musculoskeletal risk levels in restaurant chefs using Rapid Entire Body Assessment (REBA). International Journal of Health Sciences and Research, 11(5), 333–339. https://doi.org/10.52403/ijhsr.20210552

Khasanah, U., Sutarto, A. P., & Izzah, N. (2022). Work facilities improvement using systematic layout planning to reduce the risk of manual handling. Journal of Novel Engineering Science and Technology, 1(1), 15–23. https://doi.org/10.56741/jnest.v1i01.56

Khazri, H., Mustapha, Z. A., Shimmi, S. C., Parash, M. T. H., & Hossain, A. T. (2023). Hand anthropometry: Baseline data of the major ethnic groups in Sabah. Borneo Journal of Medical Sciences (BJMS), 17(1), 5–19. https://doi.org/10.51200/bjms.v17i1.3780

Kim, B. B. J. (2012). Effect of ergonomic design changes in hand tools on physiological cost and subjective ratings. International Journal of Occupational Safety and Ergonomics, 18(2), 267–277. https://doi.org/10.1080/10803548.2012.11076932

Kumar, L. (2017). Productiveness Vs productivity. Management Dynamics, 17(2), 70–79. https://doi.org/10.57198/2583-4932.1055

Lazzaroni, M., Poliero, T., Sposito, M., Toxiri, S., Caldwell, D., Natali, C. Di, & Ortiz, J. (2021). Back-support exoskeleton control strategy for pulling activities: Design and preliminary evaluation. Designs, 5(3), 39. https://doi.org/10.3390/designs5030039

Lim, C.-M., Lee, K., Kim, K., Kim, H., Seo, M.-T., Kim, S., & Chae, H.-S. (2016). Development and assessment of shovel applying foothold. Journal of the Ergonomics Society of Korea, 35(2), 67–74. https://doi.org/10.5143/JESK.2016.35.2.67

Mincolelli, G., Imbesi, S., & Zallio, M. (2020). Collaborative Quality Function Deployment. A Methodology for Enabling Co-design Research Practice. In Advances in Intelligent Systems and Computing (pp. 91–99). https://doi.org/10.1007/978-3-030-20444-0_9

Montenegro, G. S., Iratchet, M. R., Velasco Mur, A., Andrade, M. Á., Urra, K. O., & Inostroza, P. G. (2024). Exposure to musculoskeletal and psychosocial risks in SME workers, Antofagasta, Chile, 2021-2022. Revista Brasileira de Medicina Do Trabalho, 22(03), 01–08. https://doi.org/10.47626/1679-4435-2023-1119

Mukhopadhyay, P., Jhodkar, D., & Kumar, P. (2015). Ergonomic risk factors in bicycle repairing units at Jabalpur. Work, 51(2), 245–254. https://doi.org/10.3233/WOR-141852

Parvez, M. S., & Shahriar, M. M. (2018). Agricultural farm-related injuries in Bangladesh and convenient design of working hand tools. Journal of Healthcare Engineering, 2018, 1–10. https://doi.org/10.1155/2018/4273616

Patel, N. K., Moses, S. C., & Aalam, R. N. (2022). Development and ergonomic assessment of manually operated modified linseed crop thresher. International Journal of Plant & Soil Science, 34(23), 1191–1200. https://doi.org/10.9734/ijpss/2022/v34i232532

Rajendran, M., Sajeev, A., Shanmugavel, R., & Rajpradeesh, T. (2021). Ergonomic evaluation of workers during manual material handling. Materials Today: Proceedings, 46, 7770–7776. https://doi.org/10.1016/j.matpr.2021.02.283

Ruslani, L., & Nurfajriah, N. (2015). Analisis beban kerja fisiologi dan psikologi karyawan pembuatan baju di PT Jaba Garmindo Majalengka. Bina Teknika: Majalah Ilmiah FTI-UPN Veteran, 11(2), 114–123. https://doi.org/10.54378/bt.v11i2.103

Sauk, H., & Uğurlutepe, K. M. K. (2023). Evaluation of employee positions by different ergonomic risk analysis methods in manual harvesting of hazelnuts. Turkish Journal of Food and Agriculture Sciences, 5(1), 1–6. https://doi.org/10.53663/turjfas.1201035

Setiawan, A. B., Nugroho, A. D., Wiyanti, D. T., Yusuf, M., Maslikhatun, A., & Bowo, P. A. (2023). Indonesian food production challenges: Climate, land and industrialization. JEJAK : Jurnal Ekonomi Dan Kebijakan, 16(1), 74–91. https://doi.org/10.15294/jejak.v16i1.43334

Sihombing, V. U., Siadari, U., Sari, R., & Munthe, M. A. (2023). The impact of climate change on productivity and food security in Indonesia. Journal of Agri Socio Economics and Business, 5(02), 191–202. https://doi.org/10.31186/jaseb.5.2.191-202

Silviana, Hardianto, A., Fuhaid, N., & Hermawan, D. (2021). Designing the ergonomic press and molding machine of cassava chips for sustainable development in SMEs. Pertanika Journal of Science and Technology, 29(3), 1595–1608. https://doi.org/10.47836/pjst.29.3.24

Spinelli, R., Aalmo, G. O., & Magagnotti, N. (2015). The effect of a slack-pulling device in reducing operator physiological workload during log winching operations. Ergonomics, 58(5), 781–790. https://doi.org/10.1080/00140139.2014.983184

Tarakçi, E., & Can, E. (2024). A Novel Approach to Ergonomic Risk Analyses. In The Future of Risk Management. IntechOpen. https://doi.org/10.5772/intechopen.1004385

Vijayakumar, R., & Choi, J. (2022). Emerging trends of ergonomic risk assessment in construction safety management: A scientometric visualization analysis. International Journal of Environmental Research and Public Health, 19(23), 16120. https://doi.org/10.3390/ijerph192316120

Wibisono, A., & Tranggono, T. (2023). Product design of upper sandal fabric cutting machine using ergonomic function deployment method. Operations Excellence: Journal of Applied Industrial Engineering, 15(2), 186. https://doi.org/10.22441/oe.2023.v15.i2.084

Yattani, M. W., Guyo, W., Ombui, D. K., & Nyang’au, D. S. P. (2024). Workplace ergonomics and employee performance in registered private security firms in Kenya. European Journal of Theoretical and Applied Sciences, 2(1), 175–185. https://doi.org/10.59324/ejtas.2024.2(1).13




https://doi.org/10.21776/ub.industria.2024.013.02.4

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