摘要
为防止坚硬的犁底层对深松铲尖和铲柄的过载破坏,在研究过载保护装置工作原理的基础上,设计了一种具有过载保护功能的深松装置,并对其关键部件安全销的选型方法进行了研究和有限元校核验证。通过研究深松装置在正常载荷和超载荷两种不同状态下的受力,对其关键部件安全销的直径尺寸和材料选型方法进行了阐述,并利用ANSYS Workbench软件对选用材料为45碳素钢、直径为20mm安全销的过载保护深松装置,进行稳定工作和超载荷工作两种状况下的静力学分析。结果显示:在超载荷状态下,过载保护装置的安全销最大应力为538.47MPa,远大于45碳素钢的屈服强度355MPa。这表明,过载保护装置设计合理,能够起到过载保护作用。该研究可以为深松铲的过载保护设计提供依据。
To prevent overload damage of the hard plow pan for Subsoiler tip and Shanks, designed a subsoiling device with overload protection function on the basis of research overload protection device operating principle, and its key com- ponents of the safety pin selection method were studied and finite element validation check. In this paper, by studying the subsoiling device under normal load and super load two different states of stress, it expounded its key components of the safety pin＇s diameter and material selection methods, and for the selection of materials of the 45 carbon steel with a diameter of 20mm safety pin overload protection subsoiling device using ANSYS Workbench software for statics analysis under two conditions of stability and ultra-load work. The results showed that the overload protection device of safety pin maximum stress is 538.47MPa in the ultra-load state, which is much larger than the 45 carbon steel yield strength 355MPa. It is also shows that the overload protection device designed reasonable, and can play the role of overload pro- tection. The study can provide the basis for the overload protection design of the Subsoiler.
出处
《农机化研究》
北大核心
2017年第8期32-37,共6页
Journal of Agricultural Mechanization Research
基金
陕西省科技攻关项目(2013K02-11)
杨凌示范区科技计划项目(2014NY-29)
西北农林科技大学重点项目(Z101021501)
关键词
深松铲
过载保护
有限元分析
subsoiler
overload protection
finite element analysis
