半夏收获中碰撞恢复系数测定

为获取半夏收获机收获部件的设计依据,建立了半夏球茎碰撞恢复系数测量系统.对影响碰撞恢复系数各因素材料厚度、下落高度、半夏质量和碰撞材料进行了混合正交试验和单因素试验.试验结果表明,碰撞材料和半夏质量影响显著,下落高度与材料厚度影响不显著.单因素试验表明,碰撞恢复系数随着半夏质量增加而减小,橡胶的恢复系数小于Q235钢....

Determination of Collision Recovery Coefficient in Pinellia ternata Harvest

In order to obtain design basis for harvesting parts of Pinellia ternata harvester,a measuring device for recovery coefficient of Pinellia corm collision was established.Mixed orthogonal test and single factor test were carried out on material thickness,drop height,pinellia mass,and crash material of various factors affecting crash recovery coefficient.Test results showed that effect of collision material and quality of Pinellia ternata were significant,and effect of drop height and material thickness were not significant.Single factor test showed that collision recovery coefficient decreased with increase of Pinellia ternata mass,and recovery coefficient of rubber was smaller than that of Q235 steel.In the field test,damage rate of Pinellia ternata was 3.53% when material was Q235,and damage rate was 2.19% when material was rubber.When mass of Pinellia ternata tuber was 4~6 g,damage rate of Pinellia corms was 4.80%,and when mass of Pinellia ternata tuber was 1~3 g,damage rate of Pinellia corms was 3.20%.It could provide reference for design and optimization of working parts of Pinellia ternata harvester.