一种手提式挖坑机的研究分析  

Research and Analysis of a Portable Digging Machine

作　　者：杨勇[1] 梁尚明[1] 贺亚博 YANG Yong;LIANG Shang-ming;HE Ya-bo(School of Manufacturing Science and Engineering,Sichuan University,Sichuan Chengdu 610065,China)

机构地区：[1]四川大学制造科学与工程学院,四川成都610065

出　　处：《机械设计与制造》2021年第6期126-129,共4页Machinery Design & Manufacture

基　　金：巴中市南江县-农技推广(川科农[2018]12号-313);(川大-泸州)基于智能化的混凝土搅拌站废水废渣综合利用工艺研究(2015CDLZ-G18-SCU)。

摘　　要：根据部分地区烟草种植机械的需求,基于有限元软件ANSYS Workbench设计了一种手提式挖坑机。选用工程钻机和自设计的不锈钢挡泥管,具有一定环保,安全,舒适的优势。通过建立关键部件螺杆轴的有限元模型,导入软件进行了模态分析,提取其固有频率和振型云图,预知特定外部动载荷对结构可能产生的影响和作用,避免发生共振,并检验结构设计的合理性。研究避免共振发生的途径,分析了螺旋叶片结构参数与固有频率变化的关系,发现调整结构参数可以定向改变固有频率,避免共振的发生。为不同工况条件下进一步设计挖坑机提供了一种途径。According to the demand of tobacco growing machinery in some areas,a portable digging machine was designed based on the finite element software ANSYS Workbench.The use of engineering rigs and self-designed stainless steel fender tuber makes it environmentally friendly,safe and comfortable.Through the establishment of the finite element model of the screw shaft of the key components,and importing it into the software to perform modal analysis,extracting its natural frequency and vibration mode cloud map,predicting the possible influence and effect of specific external dynamic load on the structure,avoiding resonance,and verifying the rationality of the structural design.The way to avoid the occurrence of resonance is studied.The relationship between the structural parameters of the spiral blade and the change of the natural frequency is analysed.It shows that the natural frequency of the structural parameter orientation can be adjusted to avoid the occurrence of resonance.It provides a way for further design of digging machines under different working conditions.

关 键 词：挖坑机 结构设计 螺旋叶片 模态分析 共振分析 

分 类 号：TH16[机械工程—机械制造及自动化] S220.1[农业科学—农业机械化工程]