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目的 解决现役中件空投无缓冲、货台空投成本高等问题。方法 在保证中件空投托盘和运输机具有良好的空投适应性和匹配性的基础上,以托盘的缓冲功能为核心,设计托盘的框架结构。确定托盘的主要材料,设计具有一定缓冲功能、效费比较高的中件空投托盘。结果 以厚度为50 mm的边8蜂窝纸板缓冲垫为例计算,当承载质量为500 kg空投物资时,需要厚度为143 mm的蜂窝纸板缓冲垫。计算结果表明,中件空投托盘的缓冲材料选择合理,结构设计正确,能够实现设计的目的。结论 设计的中件空投托盘具有储运方便、装机简单、吸能缓冲、成本低廉等特点,为中件空投系统的改进和空投货台的设计提供了一种思路。 相似文献
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针对精度要求很高,产品的附加值很大的工业器械,在满足堆码、搬运货物、安全运输等基本功能下,增加托盘的缓冲性能。以这个理念为出发点,选择合适的缓冲材料和木料,设计了托盘结构和结合方式。以医疗器械的包装设计为例,通过实验室测试,验证了设计理念和设计流程的合理性,检验了防振球托盘的实用性,总结了防振球托盘的优缺点,为防振球托盘的应用提供依据。 相似文献
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目的建立缓冲材料性能数据库,为缓冲包装设计提供数据支持,获得科学的缓冲包装设计方案。方法依据GB/T 8167—2008《包装用缓冲材料动态压缩试验方法》对EPE的缓冲性能进行测试,依据GB/T 8169—2008《包装用缓冲材料振动传递特性试验方法》对EPE振动传递特性进行测试。结果获取了EPE最大加速度-静应力曲线和振动传递率-频率特性曲线,建立了EPE缓冲包装设计流程,编制了EPE缓冲包装设计软件。结论通过实例验证了软件的可行性,提高了设计效率和质量,为EPE材料的缓冲包装设计提供了依据。 相似文献
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现代生活中离不开快递,快递离不开物流.缓冲包装就是负责保证运输的产品在恶劣运输环境中不受到破坏,保持物品良好性的一种包装.主要有发泡塑料缓冲材料、气垫缓冲材料、纸质缓冲包装材料和植物纤维类缓冲包装材料等几大类.本文介绍了发泡塑料缓冲材料和气垫缓冲材料以及可降解塑料缓冲材料. 相似文献
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分析了典型缓冲材料与蜂窝纸板力学模型的应力-应变曲线及缓冲系数-最大应力曲线特征,并提出了利用缓冲系数-最大应力曲线设计蜂窝纸板缓冲衬垫的方法。研究结果表明:典型缓冲材料的应力-应变曲线呈现单调递增趋势;蜂窝纸板的应力-应变曲线特征比较复杂,分为线弹性阶段、屈曲变形阶段、密实化阶段;蜂窝纸板的缓冲系数-最大应力曲线不规则,线弹性阶段的缓冲系数较大,缓冲效率不高,在该阶段可以与其它缓冲材料组合使用,屈曲变形阶段的缓冲系数及应力均较小,缓冲效率较高,但需要跨越峰值应力,在该阶段衬垫设计按照线弹性阶段的峰值应力计算,密实化阶段的材料承受应力较大,不利于保护产品。预压后的蜂窝纸板损失了部分承载能力,其缓冲系数-最大应力曲线平滑,因而其衬垫可按照经典缓冲衬垫设计方法进行设计。 相似文献
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目的研究纸浆模、EPE材料的单元结构与组合结构,以提高其缓冲性能。方法通过Ansys仿真分析单元结构的静态压缩实验,对比不同材料结构单元在静载时的承载能力,在此基础上,建立产品缓冲结构单元模型,运用Ansys/LS-DYNA的Drop Test模块进行动态跌落实验,比较不同材料结构单元与缓冲性能,并通过试验验证。结果验证了组合结构在静载和跌落冲击时的缓冲性能优于单个缓冲结构。结论在缓冲包装中,通过优化缓冲结构单元可提高结构的缓冲能力。 相似文献
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新型纸托盘的抗压强度试验研究 总被引:1,自引:4,他引:1
分析了国内外托盘的发展状况,归纳了新型纸托盘的优缺点,随着纸托盘日趋广泛使用,对其不同方向的抗压强度,设计4种抗压试验方法来测试.并就提高纸托盘抗压强度提出了合理的设计建议. 相似文献
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Chandler Quesenberry Laszlo Horvath John Bouldin Marshall S. White 《Packaging Technology and Science》2020,33(12):547-558
During unitized shipment, the components of unit loads are interacting with each other. During floor stacking of unit loads, the load on the top of the pallet causes the top deck of the pallet to bend, which creates an uneven top deck surface resulting in uneven or asymmetrical support of the corrugated boxes. This asymmetrical support could significantly affect the strength of the corrugated boxes, and it depends on the top deck stiffness of the pallet. This study is aimed at investigating how the variations of pallet top deck stiffness and the resulting asymmetric support affect corrugated box compression strength. The study used a scaled-down unit load compression test on quarter-scale pallet designs with different deckboard thicknesses using four different corrugated box designs. Pallet top deck stiffness was determined to have a significant effect on box compression strength. There was a 27%–37% increase in box compression strength for boxes supported by high-stiffness pallets in comparison with low-stiffness pallets. The fact that boxes were weaker on low-stiffness pallets could be explained by the uneven pressure distribution between the pallet deck and bottom layer of boxes. Pressure data showed that a higher percentage of total pressure was located under the box sidewalls that were supported on the outside stringers of low-stiffness pallets in comparison with high-stiffness pallets. This was disproportionately loading one side of the box. Utilizing the effects of pallet top deck stiffness on box compression performance, a unit load cost analysis is presented showing that a stiffer pallet can be used to carry boxes with less board material; hence, it can reduce the total unit load packaging cost. 相似文献
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The packaging industry has long considered pallets to be rigid structures. However, in a unit load, the weight of the product produces compressive forces that are distributed across the pallet causing the top deckboards to deflect. Corrugated paperboard boxes are highly susceptible to changing support conditions; therefore, the deckboard deflection directly impacts the vertical compression strength of the box. Therefore, the objective of this study is to evaluate the effect of pallet deckboard stiffness on the vertical compression strength and deflection of corrugated paperboard boxes. Additional treatments included gaps between the deckboards and location of the box relative to the pallet stringers. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
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目的军用托盘作为军事物流中最基本的集装单元器具,统一其规格标准可提高托盘应用的载货效率,节省成本。为实现军用托盘在未来军事物流建设中的效用,对统一其规格标准提出政策性发展建议。方法在整个社会物流发展的大前提下,通过分析托盘规格国际标准形势,以国家标准作为根本依据,参考外军托盘标准的发展方向,研究我军托盘规格标准的适用性,提出统一军用托盘规格标准的建议。结论外军和先进发达国家的实践经验与民用物流中托盘循环共用系统的成功案例,都验证了统一军用托盘规格标准是推进单元化军事物流发展的关键一环,推广标准托盘是我军实现现代军事物流的必经之路。 相似文献
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Application of beam on elastic foundation to the interaction between a corrugated box and pallet deckboard
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Matthew Baker Laszlo Horvath Marshall S. White Mark Scott 《Packaging Technology and Science》2018,31(5):377-385
Corrugated boxes are ubiquitous in shipping and warehousing logistics. In physical distribution, corrugated boxes are often shipped in a unit load form where the interaction between the components determines the effectiveness and safety of the overall system. When lower stiffness pallets are used to support the corrugated boxes, the compression strength of boxes is reduced due to the uneven support conditions caused by the deforming top deckboards of the pallet. In this study, a modification of the principle of beam on elastic foundation was used to predict the effect of pallet deck stiffness on the performance of a corrugated box. In the model, the corrugated box acts as the elastic foundation, and the deckboard is represented as the beam. Pallet deck stiffness, pallet connection stiffness, and package stiffness are required model inputs. The resulting model was capable of predicting the normalized distribution of forces along the boxes' length sidewall but was not capable of predicting the compression strength of the box at failure. 相似文献
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货架托盘性能的研究与分析 总被引:2,自引:2,他引:0
通过试验的方法研究了货架托盘的性能,主要从结构、货架宽度、上架时间等几个方面分析了其对托盘性能的影响,并且对试验结果进行了讨论,得到了提高其性能的方法和方向,为货架托盘的选择提供依据。 相似文献
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折叠式托盘箱货架弯曲的有限元分析及试验验证 总被引:3,自引:3,他引:0
目的市场上的托盘箱普遍根据经验设计,其设计周期长,成本高。拟研究利用有限元模拟托盘箱性能的可行性。方法先利用三维软件Solidwokrs完成托盘箱的建模,再导入有限元分析软件Workbench模拟其货架弯曲性能,根据模拟结果修改模型,直至满足要求后进行打样制造,然后进行实际托盘箱样品的实验。结果托盘箱货架弯曲的实验结果和模拟结果总体上吻合度较高,托盘上5个试验位置挠度的相对误差随着载荷的增大而逐渐减小,并趋于稳定。结论使用有限元软件Workbench来进行托盘箱结构的设计和性能模拟分析是可行且有效的。 相似文献
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基于SolidWorks的托盘结构有限元分析及优化设计 总被引:21,自引:20,他引:1
托盘结构设计一直采用经验设计方法,其结构的合理性有待研究。通过SolidWorks对托盘进行了建模和参数化设计,并运用其集成的Simulation仿真分析功能对所建立的模型进行了有限元分析。通过与托盘试验原型测试对比,验证了分析的正确性和有效性。最后通过SolidWorks的优化功能对托盘模型进行了优化设计,得到了以安全系数为约束条件的托盘上连板的最优厚度。该方法可行、有效,为托盘结构分析和优化设计提供了一条新的思路。 相似文献