果蔬运输振动频谱检测分析及对水果损伤的研究  

Analysis of Truck Vibration and Damage to Huanghua Pears during Transport

作　　者：周然[1] 苏树强[2] 李云飞[2] 

机构地区：[1]上海交通大学机械动力学院制冷与低温工程所,上海200240 [2]上海交通大学,上海201101

出　　处：《包装工程》2007年第10期76-79,共4页Packaging Engineering

基　　金："十五"国家科技攻关项目(2004BA527B)

摘　　要：检测了不同路况下,钢片弹簧悬架的卡车运输黄花梨过程中车厢前后垂直振动,并且比较了卡车车厢内不同装载位置梨的损伤情况。试验结果表明:卡车在运输过程中,振动加速度最大值发生在2.5~4Hz之间。在2~40Hz之间,车厢后部的振动加速度显著高于车厢前部,梨的损伤程度与其在车厢内的不同位置的振动水平有关。车厢后部的梨损伤要高于车厢前部同样高度堆放的(P<0.05),在车厢内同一位置,装在顶部塑料箱内的梨损伤情况显著高于装在底部塑料箱的(P<0.05)。This research was carried out to test vertical vibration levels of the front and rear floor in a truck with leaf-spring suspensions for their effects on mechanical damage to Huanghua pears(Pyrus pyrifolia Nakai,cv. Huanghua) during transport on different road conditions.The results showed that the highest acceleration levels were found at 2.5~4Hz.The acceleration levels of the rear position in the truck were higher than the front position during transport in the range 2~40 Hz.The damage levels of pears load...

关 键 词：运输振动 黄花梨 机械损伤 

分 类 号：S661.2[农业科学—果树学]