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Desain Ergonomis Sistem Penggandengan Trailer pada Traktor Roda Dua Muhammad Dhafir; Tineke Mandang; Wawan Hermawan; Muhammad Faiz Syuaib
Jurnal Keteknikan Pertanian Vol. 7 No. 1 (2019): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1106.322 KB) | DOI: 10.19028/jtep.07.1.99-106

Abstract

AbstractThe existing hitch system which pulled trailer on the two-wheel tractor had disadvantages when turning it, the tractor handlebar moved away from operator control, consequently the handlebar position is already beyond the operator control range so the operator had to bend. For a larger radius turning, the operator had to descend from operator seat. The purpose of this study was to design an ergonomic trailer hitching system for Indonesian operator. Prototype tests carried out include performance and functional testing. The pivot type trailer hitching system was the most superiortype compare to the other concept. With the design of this system the operator's position is fixed to the handlebars of the two-wheeled tractor, both in straight and turn operations, so that theoperator can fully control the two-wheeled tractor along with all the control levers. The ideal dimension of the operator seat were seat height of 410 mm, backrest distance of 1700 mm, seat length of 320 mm, and seat width of 300 mm. Two-wheel tractor with pivot type trailer hitching system has a turning radius of 2.18 m - 2.82 m better than existing system of 3.72 m - 4.03 m.AbstrakSistem penggandengan konvensional untuk menarik trailer pada traktor roda dua memiliki kelemahan pada saat berbelok, stang traktor bergerak menjauh dari posisi kendali operator, akibatnya posisi stang sudahberada di luar kendali jangkauan operator sehingga operator harus membungkuk. Untuk belokan dengan sudut yang lebih besar operator harus turun dari tempat duduk operator untuk dapat mengendalikan traktor. Tujuan penelitian adalah untuk mendesain sistem penggandengan trailer yang ergonomis untuk operator Indonesia.Pengujian-pengujian prototipe yang dilakukan meliputi pengujian kinerja dan fungsional. Sistem penggandengan trailer tipe pivot merupakan yang paling unggul dibandingkan dengan konsep-konsep lainnya. Dengan desain sistem ini posisi operator adalah tetap terhadap alat-alat kendali traktor, baik dalam keadaan berjalan lurus maupun berbelok, sehingga operator dapat sepenuhnya mengendalikan traktor roda dua beserta semua tuastuas kendalinya. Dimensi-dimensi ideal tempat duduk operator (seat) adalah tinggi tempat duduk (Td) 410 mm, jarak sandaran duduk (Jd) 1700 mm, panjang tempat duduk (Pd) 320 mm, dan lebar tempat duduk (Ld) 300 mm. Traktor roda dua dengan sistem penggandengan tipe pivot memiliki radius putar 2.18 m – 2.82 m, lebih baik dibandingkan sistem konvensional yaitu 3.72 m – 4.03 m.
OPERATOR WORKLOAD ANALYSIS ON TRAILER OPERATION USING TWO WHEEL TRACTOR WITH CAGE WHEEL IN PALM OIL SOIL Muhammad Idkham; Muhammad Dhafir; Safrizal Safrizal; Safna Marisza
Jurnal Agroindustri Vol 12, No 1 (2022)
Publisher : BPFP Faperta UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agroindustri.12.1.48-60

Abstract

The operation of the pivot trailer on flat land is more ergonomic than conventional trailers, but on sloping land it has never been tested. The operation of the two-wheeled tractor carried out by the operator on uneven land has problems with the steering handlebar which goes up and down following the movement of the tractor body, thus affecting the increase in workload. To reduce the excessive workload, it is necessary to design a trailer that can be controlled easily. The purpose of this study was to analyze ergonomics, especially the operator's workload when operating a pivot trailer and conventional trailer on a two-wheel tractor using cage wheels. The trailer is towed on a tractor with treatment on sloping land and flat land with several turns, and data collection of the operator's workload uses the heart rate method. The results showed that the operation of the pivot trailer for sloping land (0°, 10°, and 30°) respectively showed IRHR values of 1.13, 1.15, and 1.46 or work levels of "Light", "Light”, and “Medium”. When using a conventional trailer, the IRHR values are 1.12, 1.12, and 1.39 or work levels of “Light”, “Light” and “Medium”. The average energy consumption rate for operating a pivot type trailer is 2.80 kcal/hour.kg-bb (kilocalories per hour per operator weight), while using a conventional trailer is 2.75 kcal/hour.kg-bb. The level of operator workload is also influenced by skills in driving.