Application work risk of manual material handling operators using different lifting methods

TALENTA - Conference on Engineering, Science and Technology 2017

工业技术;自然科学

Anizar^1 ; Matondang, A.R.^1 ; Sibarani, J.A.^1

Department of Industrial Engineering, Faculty of Engineering, Universitas Sumatera Utara, Padang Bulan, Medan

20155, Indonesia^1

关键词: 1 minutes;    Arterial pulse;    Cardiovascular strains;    Energy expenditure;    Least energy;    Lifting method;    Lifting process;    Manual material handling;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/309/1/012004/pdf
DOI  :  10.1088/1757-899X/309/1/012004

来源: IOP

【 摘 要 】

This study observed the activity of lifting and moving crates containing bottles at a pallet station in a carbonated drink factory. The activity of moving crates, each weighing 15 kg, is performed by four operators using different methods. An operator manually moves 250 crates daily and often takes rest during working. This study aims to find the most efficient method, that is using the least energy, to move crates. The workload is assessed using the method of Cardiovascular Strain Load (CVL) and energy expenditure. Operators' arterial pulse is measured for 1 minute right before they start working and after they finish working; this is done to obtain work arterial pulse and rest arterial pulse. The way operators lift crates is analyzed using biomechanics. It is found that fatigue is experienced by all operators, with the exception of the 3rdoperator who has a %CVL number below 30%. He positions the pallet to be parallel to the conveyor, and then stand in between during the lifting process. He only rotates his body to move the crate from the conveyor onto the pallet, requiring only little energy. This is one of the reasons why the %CVL number is lower than the other operators.