稻谷摩擦特性研究  

Experimental study on frictional characteristic of Grain

作　　者：张烨[1,2] 李长友[1,2] 李建民[1,2] 麦智炜[1,2] 徐凤英[1,2] 

机构地区：[1]华南农业大学工程学院,广东广州510642 [2]华南农业大学南方农业机械与装备关键技术省部共建教育部重点实验室,广东广州510642

出　　处：《广东农业科学》2011年第13期15-17,共3页Guangdong Agricultural Sciences

基　　金：国家"863"计划项目(2006AA10Z262);国家农业科技成果转化项目(2006E00100286)

摘　　要：为研究稻谷的摩擦特性,以3个稻种为研究对象,测定其在各种含水率下的三轴尺寸(长径、宽径、高径)、谷粒和谷粒碎末的最大静摩擦角,为水分在线检测装置采样器设计提供参数依据。研究结果表明,稻谷的三轴尺寸随着含水率的增加而增大,其中长径变化最小,宽径次之,高径变化最大;同一品种同一含水率的稻谷的三轴尺寸无显著性差异,不同稻种之间则均有显著性差异;稻谷、稻谷碎末与塑料板(ABS)、铁板的摩擦因数均受含水率显著影响,且其摩擦因数随着含水率的增大均呈线性增加,稻谷与铁板的摩擦因数大于与塑料板的摩擦因数。In order to investigate the frictional characteristic of the grain,three varieties of grain were selected as the subject investigated.The experimental data,including 3-axes sizes（length,width,height） of the grain with different moisture content and the maximum static friction angle of the grain and the grain scraps,provide the parameter basis of the sampler designing of online moisture measuring device.The investigation resulte showed that the 3-axes sizes of the grain increased depending on the increasing of the moisture content.The increasing of the length was the least while the increasing of the height was the most.There were no significant differences of the sizes between the congeneric grain with same moisture content,but the differences between different kinds of grain were remarkable.The friction factors of the grain,grain scraps,ABS and the iron plate were strongly influenced by the moisture content and increased linearly along with the increasing of the moisture content.Besides,the friction factor of the grain and the iron plate was larger than the friction factor of the grain and the ABS.

关 键 词：稻谷 摩擦特性 试验 

分 类 号：S511.01[农业科学—作物学]