纸托盘嵌入式底脚横向强度研究

根据纸质托盘结构及纸质运输包装材料的特点,提出了一种嵌入式底脚的纸质托盘结构。首先分析了嵌入式底脚与普通粘合式底脚的承载机理,研究发现,嵌入式底脚结构改善了普通粘合式底脚结构的承载方式。在横向载荷作用下,普通粘合式底脚承受剪切力作用只有一个承载面,总承载面积较小;嵌入式底脚承受多个面的剪切力及拉压力作用,承载总面积较大。随后,分别设计了开槽式、纸护角式两种嵌入式结构,并制备试样,对比分析了两种嵌入式底脚托盘与普通粘合式底脚托盘联结强度。研究表明,普通粘合式底脚横向承载能力较小;嵌入式底脚结构提高了底脚与托盘底板的胶粘面积及强度,能够承受更大的载荷及冲击力,新型结构是一种更可靠的纸质底脚与底板结合方式。

Study on Transverse Strength of Embedded Foot Paper Pallet

According to the characteristics of paper pallet structure and packaging materials, a new structure of paper pallet with embedded foot was proposed. Firstly, the loading mechanism of embedded foot and common bonded foot was analyzed. The study found that the embedded foot improved the stress state of the common bonded foot structure. Under the action of transverse load, the common bonded foot bore shear forces with only one bearing surface, with the total bearing area being small, while the embedded foot structure bore the effect of shear force, tension and pressure applied by several surfaces, with the total bearing area larger than the common bonded foot. Then, two types of embedded foot and one type of common bonded foot were designed, and the bond strength experiments were carried out. The results showed that the common bonded foot had a small lateral load capacity, while the embedded foot improved the adhesive area and strength between the foot and the base plate of pallet, which could bear larger load and impact force. The new structure was a more reliable mode of combining paper foot and base plate.