摘要
为解决中耕时期玉米垄台回土量大、垄沟土壤透气性差等问题,设计了垄台培土与垄沟松土装置,并介绍了整机结构与工作原理。对弧面培土圆盘和弓齿滚筒的结构参数进行了理论分析与设计,并对关键受力部件弓齿滚筒进行了有限元静力学分析,结果表明其刚度和强度均满足设计要求。以回土量为弧面培土圆盘试验指标,以土壤坚实度差值和入土深度稳定性为垄沟松土装置试验指标,进行田间性能试验,结果表明:所设计的垄台培土与垄沟松土装置回土量为15.4%,土壤坚实度差值为27.2N/cm^(2),入土深度稳定性为87.5%,满足中耕作物苗期垄台培土与垄沟松土作业的性能要求。
To solve the problems of large amount of soil returning and poor permeability in ridge and furrow during the period of cultivation,a device for ridge and furrow soil cultivation and loosening was designed.The structure and working principle of the whole machine were described.The theoretical analysis and design of the structural parameters of the curved surface cultivating soil plate and the bow tooth cylinder were carried out.The finite element static analysis of the key force component of the bow tooth cylinder was carried out.The stiffness and strength of the bow tooth cylinder were met the design requirements.The amount of returning soil was taken as the test index of the curved surface cultivating plate.The difference of soil hardness and the stability of entering soil depth were taken as the test indexes of furrow loosening soil device.The field experiment was conducted.The results showed that the amount of returning soil was 15.4%,the difference of soil hardness was 27.2 N/cm 2,and the stability of entering soil depth was 87.5%by the device of cultivating soil in ridge of the furrow and loosening soil in the study.The performance requirements of cultivating soil in ridge of the furrow and loosening soil in the furrow during the seedling stage of the cultivated crops was met.
作者
杜长征
Du Changzheng(College of Agricultural Machinery,Heilongjiang Agricultural Engineering Vocational College,Harbin 150088,China)
出处
《农机化研究》
北大核心
2023年第6期110-114,119,共6页
Journal of Agricultural Mechanization Research
基金
国家重点研发计划省级项目(GX18B026)。
关键词
垄台培土
垄沟松土
有限元
cultivating soil in ridge of the furrow
loosening soil in the furrow
finite element
