农业机械学报2018，Vol.49Issue(2)：34-40,73,8.DOI:10.6041/j.issn.1000-1298.2018.02.005
大豆播种机破碎式仿生覆土装置设计与试验
Design and Test of Crushing Bionic Soil Covering Device of Soybean Seeder
摘要
Abstract
Inspired by the efficient mining of soil function of the oriental mole cricket claws,crushing soil covering device was put forward to improve the performance of the broken soil.The toe claws of the oriental mole cricket forefoot and toe high angle,toe distance and lateral wedge angle were measured,on the basis of this,the bionic soil crushing disc was designed.The crushing type bionic soil covering device consisted of discs of big and small,bending flange,fixed frame,rotating pair,damping spring and suspension frame.The covering soil device was designed for double row seed groove,which can be used to cover the soil of two sides of soybean grooves.Ansys and Ls-Dyna softwares were used to simulate and analyze the designed components.Through the simulation analysis of the crushing bionic soil covering device,the soil broken process was simulated actually and intuitively.The cutting force and equivalent stress distribution of soil and lateral displacement of soil were obtained.Through the analysis of equivalent stress of broken soil,the equivalent stress was greater than the shear strength of the dry soil which ensured the broken effect on the dry soil.Field test results showed that the crushing bionic soil covering device completed the function requirements of soil covering,and had strong soil fragmentation and the crushing rate was 92.2％,the average thickness of covering soil was 2.4 cm,and the average seed spacing was 10.1 cm.关键词
大豆播种机/覆土装置/破碎式/仿生Key words
soybean seeder/soil covering device/crushing/bionic分类
农业科技引用本文复制引用
张志君,孙旭伟,金柱男,邴政,孙霁宇,佟金..大豆播种机破碎式仿生覆土装置设计与试验[J].农业机械学报,2018,49(2):34-40,73,8.基金项目
国家重点研发计划项目(2017YFD0701103)和国家重点研发计划-政府间国际科技创新合作重点专项(S2016G4501) （2017YFD0701103）
