Design and Development of an Ergonomic Trolley-Lifter for Sheet Metal Handling Task: A Preliminary Study

Umar, Radin Zaid Radin; Ahmad, Nurul Qomariyah; Isa, Halim; Lee, Poh Yan; Hamid, Malek

doi:10.1016/j.shaw.2019.06.006

Cited by 11 publications

(2 citation statements)

References 21 publications

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“…Through effective ergonomic interventions, musculoskeletal health related issues may be reduced, and work productivity may be improved [14,15,16]. In addition, proactive ergonomic application during front end engineering design stage has been demonstrated to generate the best outcomes in terms of work quality and productivity [17].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Transfer Distance to Lower Back Twisting and Bending Patterns in Manual Transfer Task

et al. 2021

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Manual material handling (MMH) activities utilize human’s effort with minimal aid from mechanical devices. MMH is typically associated with poor lower back posture which can lead to lower back injury. The likelihood to develop musculoskeletal disorders (MSDs) increases when poor working posture exist in combination with repetition and/or forceful exertion. In manual transfer activity, the distance between lifting origin and destination could affect workers’ exposure on poor lower back working posture. An experimental study was conducted to investigate the effect of transfer distance to lower back twisting and bending pattern in manual transfer activity. Positional body joints data of 26 male subjects were captured using the combination of motion capture (MOCAP) system with MVN studio software. Calculated data were plotted against time to track subjects’ lower back twisting and bending behavior. In general, longer the transfer distance would result in smaller twisting angle but higher bending angle. Statistical analysis in this study suggests 0.75m to 1.00m as the optimum transfer distance to balance lower back twisting and bending exposure on workers. This study is envisioned to provide insights for practitioners to consider space requirements for MMH activity to minimize lower back twisting and bending, and consequently the development of MSDs.

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Section: Introductionmentioning

confidence: 99%

The Effect of Transfer Distance to Lower Back Twisting and Bending Patterns in Manual Transfer Task

et al. 2021

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“…Lifts are pieces of machinery that existed hundreds of years ago to help people convey hefty loads [1]. Man, animal, and water power became the earliest lifts.…”

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confidence: 99%

Development of Automatic Object Lifter

Regidor,

Lasaga,

Suansing

et al. 2023

JETI

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Food service is the most significant part of running a successful restaurant. Precise and consistent food order distribution must be synchronized to achieve a remarkable operation. As the food business industry develops, the quality of the technology goes down. It now becomes the burden of the owners, especially on the workers. Developing an automated dumbwaiter with High Torque DC Motor and 1-kg load cell w/ HX711 Amplifier was conceptualized to solve this problem. The study aims to design, fabricate, and test the functionality of an Arduino-based automatic object lifter that will convey the corresponding meal to the following floor. The circuitry comprises an Arduino Uno, 1-kg Load Cell, HX711 Load Cell Amplifier, LCD Display 20x4 HD44780 Controller, Rotary Switch, Limit Switch, L298N Motor Driver, and a High Torque DC Motor. The system begins to operate after the load cell is calibrated. After this, the food was placed on a tray over the top of the dumbwaiter with a 1-kg load cell underneath. The meal weights will be set accordingly and saved as data when the microcontroller analyses the values given by the load cell and HX711 module. The dumbwaiter has only three meals available. Every meal comprises three different combinations of food items per tray, for a maximum of 1 kg. For the first meal: 1-pc Chicken w/ Rice & Drinks, second meal: Spaghetti w/ Fries & Drinks, and the third meal: Burger w/ Fries & Drinks. Whenever there are discrepancies in the weights of the food items, it prevents the system's operation. The dumbwaiter carries the meals up to the next floor. As the dumbwaiter hits the plunger of the limit switch, it instantly stops. Generally, the prototype was functional, with an average transport time of 13.584 seconds and a limit switch-breaking system of 0.5 milliseconds.

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Ergonomics and Manual Handling Workplace Improvement: A Case Study of Firefighter at Pagoh

Mahmood

Nasir

Mamat³

et al. 2021

Human-Centered Technology for a Better Tomorrow

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Firefighter are constantly at risk since they are directly exposed to various physical factors, harmful chemicals and mental stress during rescue and fire-fighting. In fire extinguishing, unstable posture is one of the possible hazardous factors and contribute to high ergonomic risk factor. Due to manual handling and lack of proper standard operation procedure, firefighter are at risk of developing musculoskeletal disorders problem such as awkward postures. This paper identify ergonomics risk factor that may cause harm to firefighter during rolling of fire hose. This study was conducted in Pagoh fire station. In order to achieve those aims, observational method was used by applying Ergonomic Risk Assessment (ERA).The Failure Mode and Effect Analysis (FMEA) method is used by calculating the severity, occurrence and failure detection which has rating score from one (1) to ten (10). Then, the risk priority number (RPN) was calculated to get the highest priority number which led to identification of ergonomic risk factor. A set of questionnaire was distributed to 20 firefighter located at Pagoh fire station for analyzing the ergonomic risk factor and compared to the FMEA result. The result of the analysis shows 56% of the respondent experienced awkward posture during handling of fire hose. The result of the questionnaire was compared to the highest RPN value from FMEA to obtain the solution on ergonomic workplace improvement at Pagoh fire station. In addition, a new tool that is expected to improve the ergonomic and manual handling of firefighter was proposed.

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Design and Development of an Ergonomic Trolley-Lifter for Sheet Metal Handling Task: A Preliminary Study

Cited by 11 publications

References 21 publications

The Effect of Transfer Distance to Lower Back Twisting and Bending Patterns in Manual Transfer Task

The Effect of Transfer Distance to Lower Back Twisting and Bending Patterns in Manual Transfer Task

Development of Automatic Object Lifter

Ergonomics and Manual Handling Workplace Improvement: A Case Study of Firefighter at Pagoh

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