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All Journal Rekayasa Mesin Jurnal GEOSAPTA
Ramses Yohannes Hutahaean
Universitas Sains dan Teknologi Jayapura
Earth & Planetary Sciences Energy Engineering Environmental Science Mechanical Engineering

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PERANCANGAN DAN ANALISIS CRAB EQUIPMENT YANG DIGUNAKAN PADA GYRATORY CRUSHER Ramses Yohannes Hutahaean; Thomas Kbarek; Rolling Swempry Gaspersz
Geosapta Vol 7, No 2 (2021): Juli 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v7i2.8847

Abstract

Salah satu kendala yang terjadi di industri pertambangan adalah terganggunya operasi gyratory crusher. Penghentian Pengoperasian Gyratory Crusher dapat disebabkan oleh kerusakan komponen yang tidak dapat diprediksi, atau masuknya material pipa atau salah satu gigi shovel. Jika terhentinya operasi Crusher disebabkan oleh masuknya material asing seperti gigi shovel gear, maka akan menyebabkan crusher mantle tidak dapat berputar, sehingga harus dilakukan pemotongan gigi shovel gear. Proses pemotongan gigi shovel gear akan menyebabkan kerugian waktu produksi selama kurang lebih 12 jam, disamping aspek keselamatan yang rendah. Maka timbullah ide untuk merancang sebuah alat yang dapat mengeluarkan benda asing seperti gigi sekop dari Crusher Chamber. Dalam makalah ini kami merancang sebuah Peralatan Kepiting meliputi analisis kinematika, analisis gaya menggunakan metode bilangan kompleks dan analisis tegangan untuk bagian geser. Berdasarkan simulasi menggunakan software MATLAB dan analisis tegangan, Crab Equipment dapat digunakan untuk mengangkat material asing di dalam chamber crusher.
PERANCANGAN ULANG TRANSFER CHUTE 63/72 UNTUK MENAIKKAN UMUR LINER, STUDI KASUS DI PT FREEPORT INDONESIA Ramses Yohannes Hutahaean; Marthina Mini; Rolling Swempry Gaspersz
Geosapta Vol 7, No 1 (2021): Januari 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v7i1.8844

Abstract

Transfer Chute is one of the important components in the transportation of ore originating from open pit to the stock pile. Damage or leakage in the transfer chute when there is no over haul will result in down time so that it can cause production losses for 10 hours . Damage that often occurs in chute transfers occurs after production increases which causes the conveyor speed to change from 2 m / s to 4 m / s so that the initial design of the transfer chute is not suitable for conveyor speeds to 4 m / s, ore originating from conveyor 63 is not form a rock box on the transfer chute 63/72 but directly hit the liner on the transfer chute.           In this paper presents two material discharge trajectory methods and expain the differences between them, and then we choose a method that approaches the actual condition. From the results of the trajectory analysis, we can determine new dimensions of transfer chute. Based on the modification of the chute transfer, the life time of the liner increased from 4 weeks to 6 months and there was never a "down time" due to an increase in the transfer chute 63/72.
STUDI KASUS IDENTIFIKASI KERUSAKKAN MESIN BERDASARKAN SINYAL GETARAN Ramses Yohannes Hutahaean; Dikky Antonius
Jurnal Rekayasa Mesin Vol. 13 No. 2 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i2.761

Abstract

The machine maintenance strategy is very important in manufacturing, mining, and other industries so an appropriate maintenance strategy is needed based on industrial operating conditions. In this paper, a Proactive maintenance strategy is presented, in which this strategy requires the identification of vibrations, and the identification of vibrations is divided into two methods, there are the identification of vibrations in the time domain and the identification of vibrations based on the frequency domain. Identification in the time domain is usually done in analyzing gears because of so much noise in the frequency domain, while identification in the frequency domain is used to analyze vibrations in cases of unbalance, misalignment, bearing defects, cavitation, and damage to electric motors. This paper briefly presents the time domain and frequency domain differences and two case studies that happened on PT. Freeport Indonesia. The first case is the investigation of bearing damage to the conveyor using vibration signals in the frequency domain, while the second case is the investigation of gear damage using the time domain that occurs in the crusher.
Co-Authors Antonius, Dikky Marthina Mini Thomas Kbarek