Suyitno Suyitno
Program Studi Teknik Mesin, Fakultas Teknik, Universitas Sebelas Maret, Indonesia

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Redesign Mata Bor Tanah Untuk Pembuatan Lubang Biopori Di Desa Puron, Kecamatan Bulu, Kabupaten Sukoharjo Zainal Arifin; Dominicus Danardono Dwi Prija Tjahjana; Rendy Adhi Rachmanto; Suyitno Suyitno; Singgih Dwi Prasetyo; Trismawati Trismawati
Mekanika: Majalah Ilmiah Mekanika Vol 19, No 2 (2020): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v19i2.43393

Abstract

The lack of rainfall and the absence of catchment areas are the main factors of the lack of water in Puron Village. Making biopori becomes solutive because it is useful for water absorption, reducing standing water, composting containers, and fertilizing the soil. Artificial biopores are made by making holes in the ground using tools such as crowbars or using ground drilling machines. The use of aids model adapted to the drill bit based on the state of the soil contour. This research is focused on classifying drill bits and redesigning which is in accordance with the condition of the soil environment in Puron Village, Bulu District, Sukoharjo Regency. So that biopori holes can be created more effectively and efficiently. The research method was carried out through the classification of tool drill bits through the house of quality product (HOQ) and redesign using Autodesk Fusion 360 software application. It was found that the design with a screw drill model with a pointed spiral has a high product quality value and can applied in puron Village. The design of the drill bit by adjusting the contours of the Puron Village can make a 100 mm diameter biopori hole. The design specifications of the drill bit with steel cast with 12 spiral plates with a length of 1300 mm with a diameter of 115 mm can be driven with a 10 HP engine. The design results have maximum stress, displacement, reaction force and strain of 3.62 MPa, 0.00081 mm, 0.35 N, and 0.000015.
Rancang Bangun Alat Elliptical trainer Outdoor Zainal Arifin; Singgih Dwi Prasetyo; Suyitno Suyitno; Dominicus Danardono Dwi Prija Tjahjana; Rendy Adhi Rachmanto; Wibawa Endra Juwana; Chico Hermanu B. Apribowo; Trismawati Trismawati
Mekanika: Majalah Ilmiah Mekanika Vol 19, No 2 (2020): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v19i2.44325

Abstract

The placement of outdoor fitness equipment at tourist attractions is one of the attractions for tourists. Besides that, it can also be used as a means of health socialization for the community in public places. The elliptical trainer type air walker is a popular fitness tool because it is easy to use and has a small risk of injury. Elliptical trainer has a working principle like a walking person where movement is influenced by the force of the hand and leg movements. The design of an elliptical trainer fitness equipment that will be placed in a public place needs to be done to get a good level of security. This article discusses the design of an elliptical trainer device that is safe to place outdoors. The design process uses the Solidworks 2017a application. The elliptical trainer is divided into 4 parts, namely the main frame, drive shaft, hand handle, and leg handle. The manufacturing process is carried out based on Design Manufacture and Assembly and machinery to reduce the risk of manufacturing failure and make it easier to work on. The result of the elliptical trainer design has dimensions of 2,500 x 1,800 x 1,000 mm. The main frame has a safety factor of 3 with a displacement of 8,524e-7 mm.