国内包装件在汽车及推车配送环节的振动对比

目的明确推车配送环节的振动水平(PSD曲线),通过对比实验提供汽车与推车配送环节的振动差异数据,为更好地进行运输包装设计提供可靠依据。方法利用路谱记录仪DER-1000进行实验数据的记录。首先通过准备实验明确推车配送环节的加速度均方根(grms)水平;进而制作轻、重2种包装件原型,先后测量推车配送环节不同道路和不同固定状态下的数据以及日照—上海实测汽车配送数据;最后,通过对比相应的grms和PSD曲线,分别对推车配送环节与汽车公路运输环节进行对比分析。结论推车配送环节的振动水平显著高于汽车运输环节,约为公路运输的10倍,在进行实际包装件设计时必须考虑推车配送环节的振动情况。

Comparison of Vibration in Truck and Cart Shipping for Domestic Packages

The work aims to determine the vibration level (PSD curve) during cart shipping and provide the difference in vibration levels during truck and cart shipping by comparing experiments, so as to provide reliable reference for a better design of transportation packaging. An instrument DER-1000 was used to record the experimental data. Firstly, a preliminary experiment was carried out to clarify the grms during the cart shipping. Secondly, two testing packages that represent light and weight package were designed. The vibration data in different road conditions and different fixed statuses and the real road transporting data by delivering the two testing packages with truck from Rizhao to Shanghai were measured in turn. By comparing the corresponding grms and PSD curve, the difference of the vibration levels between the truck and cart shipping stages was compared and analyzed. The vibration level of the cart shipping is significantly higher than that of the truck transportation. The gap of the PSD level is approximate 10 times the size of truck transportation. Thus, it is necessary to consider the vibration during the cart shipping when we design a transportation package.