Design And Analysis Of Dumbwaiter Lift For Public Building Use

Wan Azahar, Wan Azriana (2012) Design And Analysis Of Dumbwaiter Lift For Public Building Use. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

A dumbwaiter lift can be defined as a device that consists of a cart and pulley system to move goods between floors in a building. Dumbwaiter lifts are usually found in mansions or public buildings such as hospitals and hotels. In this project, the first objective is to design and propose several conceptual designs of a dumbwaiter lift used in public buildings. The second objective of this project is to analyze the conceptual designs and obtain the factor of safety in order to find the best design. The background of this project is explained through the objectives, scope and methodology involved. Literature reviews are done on existing models in the market in order to get more information about dumbwaiter lifts. Conceptual design is then produced from existing models and an optimum design is chosen. Ergonomics analysis and stress analysis are then conducted on the final design to determine the effectiveness of the concept. CATIA software was used at the final stages of the of design and analysis purpose. Results from the analysis are used to determine the factor of safety of both existing and selected design. The factor of safety of the existing design is 1.36, and the selected design is 1.97. From the RULA analysis, the final score is improved, from a final score of 6 reduced to 5 on the right side, and a final score of 7 is reduced to 5 on the left side, based on the given criteria in the software. Thus, the results of the analysis have improved the limitations of existing models with a safe design. In conclusion, the chosen design out of the 3 conceptual design is a more safer design to be used in a public building

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