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All Journal Jurnal Ilmiah Teknologi dan Rekayasa Edukasi Islami: Jurnal Pendidikan Islam Jurnal Basicedu International Journal of Progressive Mathematics Education Jurnal Ilmiah Teknik (JUIT) Jurnal Basicedu Propeller Tarqiyatuna: Jurnal Pendidikan Agama Islam dan Madrasah Ibtidaiyah Jurnal Pengabdian Kepada Masyarakat Educativa: Jurnal Pendidikan Agama Islam
Muchlis, Abdul
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Religion Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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Optimization of Transmission Systems in Rice Threshers and Straw Choppers: Enhancing Energy Efficiency and Productivity through V-Belt and Pulley Design Fauzan, Ahcmad; Abdillah, Fauzi; Muchlis, Abdul
Jurnal Ilmiah Teknik Vol. 5 No. 1 (2026): Januari: Jurnal Ilmiah Teknik
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/juit.v5i1.2493

Abstract

Rice threshers and straw choppers are essential to improve post-harvest efficiency, yet small-scale machines often experience capacity loss and wasted motor power due to non-optimal V-belt–pulley transmission design (e.g., incorrect pulley ratio, belt length, and speed matching), which reduces speed stability and increases mechanical losses. Objective: This study aims to analyze and optimize the V-belt–pulley transmission system of a combined rice thresher–straw chopper to improve power utilization and achieve target operating speeds for both processes. Methodology: A quantitative engineering approach was applied using analytical transmission design calculations and design verification through mechanical layout/simulation. Key parameters were derived from machine requirements and transmission relations, including processing capacity, force and torque, shaft speed, power demand, pulley diameters, transmission ratios, belt speed, belt length, center distance, and wrap angle. Findings: Using a 1 HP (750 W), 1450 rpm electric motor, the designed system achieved a calculated threshing capacity of 90 kg/h and straw chopping capacity of 84 kg/h under a 2-minute batch assumption. The required output power was 270.60 W (threshing) and 245.97 W (chopping), while the motor-side power demand was 308.27 W and 280.30 W, respectively, resulting in a total requirement of 588.57 W (≈78% motor power utilization). With an 80 mm driver pulley, the selected driven pulleys were 105.45 mm for the thresher (1100 rpm; ratio 1.32) and 116 mm for the chopper (1000 rpm; ratio 1.45). The belt speed was 6.06 m/s, with belt lengths of 2110 mm (A83) and 1480 mm (A58). Implications: The results provide practical parameter benchmarks for designing low-cost small-scale agricultural machines that better match motor power to required speeds and torque, reducing transmission mismatch. Originality: This study presents a parameter-complete V-belt–pulley design framework for a dual-function thresher–chopper, explicitly linking capacity targets to transmission sizing and motor power utilization.
Optimalisasi Manajemen Pakan Ikan Nila dengan Feeder Otomatis Timer Muchlis, Abdul; Nugraha, Adam Huda; Suryady, Sandy; Sapto, Agung Dwi
Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 2 (2026): Jurnal Pengabdian Kepada Masyarakat
Publisher : CV. Era Digital Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59066/jpkm.v2i2.2162

Abstract

Kegiatan pengabdian ini dilaksanakan untuk menjawab masalah ketidakteraturan jadwal pemberian pakan dan inefisiensi penggunaan pakan pada budidaya ikan nila yang masih bergantung pada metode manual. Kondisi tersebut berdampak pada variasi pertumbuhan ikan serta meningkatnya beban kerja mitra. Solusi yang diterapkan adalah teknologi tepat guna berupa alat pemberi pakan otomatis berbasis timer dengan jadwal 3 kali sehari (10.00, 14.00, 17.00 WIB). Metode kegiatan meliputi observasi lapangan, instalasi alat, pelatihan pengaturan timer dan perawatan dasar, serta monitoring operasional selama 1 minggu. Hasil menunjukkan alat beroperasi stabil sesuai jadwal dan peserta (10 orang) mampu mengoperasikan serta melakukan perawatan dasar secara mandiri. Sampling bobot ikan (n=10) selama 1 minggu menunjukkan kenaikan rata-rata dari 102,2 g menjadi 111,5 g. Penerapan ini penting karena meningkatkan disiplin pakan dan efisiensi kerja, serta berpotensi direplikasi pada pembudidaya lain.
Co-Authors AGUNG DWI SAPTO Andewi Suhartini, Andewi Azhar, Ervin Fauzan, Ahcmad Fauzi Abdillah, Fauzi Fitriani Fitriani Hasan Basri Hidayani, Fitri Ishaq Nuriadin Joko Soebagyo, Joko karman karman Nasution, Ahmad Jailani nia kurniasih Nugraha, Adam Huda Nupus, Dian NURUL AZIZAH Purwanto, Sigid Edy Rosyida, Nadya Ilma Suryady, Sandy Tamim, Ahmad Tarsono Tarsono Wulandari, Reksahati