欢迎来到天天文库
浏览记录
ID:33607114
大小:1.70 MB
页数:8页
时间:2019-02-27
《气力输送式小麦免耕施肥播种机设计与试验》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、2018年11月农业机械学报第49卷增刊doi:10.6041/j.issn.10001298.2018.S0.019气力输送式小麦免耕施肥播种机设计与试验111112于兴瑞耿端阳杜瑞成金诚谦杨善东鹿秀凤(1.山东理工大学农业工程与食品科学学院,淄博255049;2.山东理工职业学院,济宁272067)摘要:针对山东省土地经营模式的转变,小麦玉米一年两熟轮作制度导致小麦播种时间紧张且现有机械工作效率低的问题,设计了小麦气力式高效免耕施肥播种机,一遍作业可一次性完成灭茬、施肥、播种、覆土、镇压等工作。采用了集排式气流排种/肥装置,该装
2、置利用同一风道对排出的种子和肥料进行同时输送,在保证种/肥同步的同时又提高了排种/肥的效率和均匀性;利用燕尾槽式布种器进行布种作业,达到了宽苗带效果;对整机进行了田间试验测试,测试结果表明,机具通过性良好,播种深度合格率、施肥深度合格率以及种肥间距合格率分别为930%、936%和854%,变异系数分别为47%、28%、53%;平均苗带宽度为1183cm,合格率为945%,变异系数为42%,各项指标与理论设计差异不显著且符合农艺要求。关键词:小麦;免耕播种;播种机;气力输送;设计;试验中图分类号:S22322文献标识
3、码:A文章编号:10001298(2018)S0014108DesignandExperimentofWheatPlanterbyPneumaticConveyingwithNotillage111112YUXingruiGENGDuanyangDURuichengJINChengqianYANGShandongLUXiufeng(1.SchoolofAgriculturalEngineeringandFoodScience,ShandongUniversityofTechnology,Zibo255049,China2.Sh
4、andongPolytechnicCollege,Jining272067,China)Abstract:Atpresent,thelandmanagementmodeinShandonghaschanged.Therotationsystemofwheatandcornistworipeforoneyear.Thesituationcauseswheatsowingtimebecometense,andtheexistingmachineryisinefficient.Inordertosolvetheaboveproblems,a
5、kindofwheatplanterwasdevelopedbypneumaticconveyingwithnotillage.Theseedingmachinecanfinishstubble,fertilizing,sowing,coveringandpressingatonetime.Thepneumaticconveyingseeds/fertilizersdevicewasutilizedinseedsandfertilizersdischargingdeviceofwheatplanter,whichusedthesam
6、eairducttosimultaneouslytransportthedischargedseedsandfertilizers.Theformofseeds/fertilizerstransportationwasthecombinationofmechanicaltroughwheelandpneumaticconveying.Thediameterofthegroovedwheelwas60mmanditseffectivelengthwas1100mm.Thiskindofseedsmeteringdevicecouldim
7、provetheefficiencyanduniformityofseeds/fertilizersatthesametime,whichensuredthesynchronizationofseeds/fertilizers.Andthevelocityofairflowwasdeterminedtobe24m/s.Theseedsandfertilizerssettlingchamberweredesignedaccordingtotheprincipleofcycloneseparator.Theirdiameterwasdet
8、erminedtobe102mm,andtheratioofheighttoheightwas35.Accordingtotheagriculturalrequirementsofwidebandseedling,th
此文档下载收益归作者所有