Design of a grip handle for manual lifting and carrying of long metal bar

Tung, Fang Wen (2018) Design of a grip handle for manual lifting and carrying of long metal bar. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Manufacturing sectors are broadly embraces a wide range of categories of industry which are including metal, leather, paper, wood and other industry. Manual handling task is considered as one of necessary activities in the manufacturing industry. Besides, it is also recognized as a major cause of occupational injuries as like back pain and musculoskeletal injuries. In this study, the investigation is focused on the manual lifting and carrying of a long metal bar. In order to reduce the risk of injuries, the aim of this study is to design a grip handle to provide a better performance in term of grip exertion, subjective comfort and work productivity. This study applied hand grip strength measurement to determine the baseline of the optimum hand grip strength among the Malaysian male youth. In addition, the factors of comfort and discomfort were obtained by distributing the comfort questionnaire to the participant and their work productivity was determined by conducting a time study experiment. Besides, the study also applied the focus group technique and House Of Quality (HOQ) to figure out the prior user requirement and technical specification of the desired design of grip handle. Then, six concepts were sketched and the concepts have been screened and narrowed down the choices by using concept selection method. Next, the prototype was fabricated and the effectiveness of the prototype was evaluated by using the similar comfort questionnaire and time study experiment. Besides, this study has been conducted the return on investment to provide the estimation of the payback period in order to ensure the profitability of company. This study concluded that the developed grip handle prototype has improved in term of grip exertion, muscle effort, subjective comfort and work productivity during manual handling of long metal bars.

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