パレタイジング作業者の筋負荷と積み込み貨物に作用する衝撃力の関係について

抄録

The parcel receives strong shock load when it is put into a box pallet by a loading operator. The correlation between the shock load of a parcel and the working intensity of a loading operator is confirmed by the laboratory experiments. The biomechanic evaluations are also carried out. The shock accelerations of a parcel and the electromyograms of subjects are measured. The obtained results are summarized as follows. (1) When the parcel is loaded into far position in a box pallet from a palletizing operator, the working intensity of a operator is high and heavy shock acceleration occurs, because a loading operator throws the parcel to a pallet. (2) High physical strength of a operator is needed by the gentle palletizing.