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| Design Analysis and Fabricaton of a Detachable Wheelchair |
Kotingo K.W., Ketubu O. and Olisa Y.P.
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Abstract:
This paper discusses the design analysis and fabrication of a detachable tricycle wheelchair which can be used by physically challenged people to go about their day to day activities in order to ease mobility and decrease the limitation of their movement. Investigation showed that that there are over 25 million Nigerians who suffer from one physical deformity or the other with over 3.5 million of them having difficult challenges of moving around due to inability to buy a wheelchair. The cost of the wheelchair produced is fifty-six thousand, seven hundred naira only (N56,700) whereas the imported wheelchair costs about two hundred thousand and above (#200,000). In this work, the components of the tricycle were designed and selected according to standard specifications of the design model using CAD software and solid works simulations. Calculations carried out included stress analysis for the tricycle wheelchair and the input force required to move the wheel chair. The produced detachable wheelchair is made of round hollow galvanized steel pipe of ?28 mm and thickness of 2 mm was used for the construction of the wheelchair having dimension of 2000 mm × 600 mm × 1000 mm and a total weight of 24 kg. The pipes were bent and joined by welding to make the tricycle wheelchair. A performance test was carried out after the production - in terms of static and dynamic stability, maneuverability and pushing efficiency - which revealed it meets the design objective.
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