某型步履式挖掘机底盘设计与可靠性分析
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摘要
针对挖掘机作业中经常遇到的特殊工况,设计了一种适用范围更广的步履式挖掘机,对挖掘机底盘的支腿形式和主体结构布局进行了研究。结合挖掘机的模型和主要技术参数,采用有限元仿真的方法对底盘主体进行了多工况条件下的静应力和疲劳分析,结果验证了底盘结构的可靠性。同时,研究结果表明在底盘回转支承两侧易发生疲劳失效,为步履式底盘主体结构的优化提供了依据。
Aiming at the special working conditions,it designs the walking excavator for a wider range application. It analyzes the form of tire legs and the main structure layout of the excavator chassis,proposes the excavator model and the main technical parameters,uses the finite element analysis to realize static stress and fatigue analysis under multi working conditions. The results verify the reliability of the chassis structure,show that the fatigue failure is easy to generate on both sides of slewing bearing of the chassis. This method provides theoretical basis for the optimization of the walking chassis structure.
Aiming at the special working conditions,it designs the walking excavator for a wider range application. It analyzes the form of tire legs and the main structure layout of the excavator chassis,proposes the excavator model and the main technical parameters,uses the finite element analysis to realize static stress and fatigue analysis under multi working conditions. The results verify the reliability of the chassis structure,show that the fatigue failure is easy to generate on both sides of slewing bearing of the chassis. This method provides theoretical basis for the optimization of the walking chassis structure.
引文
[1]安国明.国内外步履式单斗液压挖掘机发展[J].工程机械与维修,2016(8):47-50.
[2]韩军,何绍华,陈高杰,等.一种求解步行式挖掘机底盘力学模型的工程方法[J].中国工程机械学报,2004(2):154-156.
[3]韩军,陈高杰,王红坚,等.步行式挖掘机底盘纵向坡度适应性分析[J].解放军理工大学学报(自然科学版),2009,10(增刊1):38-42.
[4]邬俊奇,张云,施晓明,等.某型步履式挖掘机步行式底盘自由度分析[J].工程机械,2015(4):39-45.
[5]祖海英,赵伟民,韩佳轩.集装箱正面吊曲臂的有限元分析及优化[J].中国工程机械学报,2013(2):129-132.
[2]韩军,何绍华,陈高杰,等.一种求解步行式挖掘机底盘力学模型的工程方法[J].中国工程机械学报,2004(2):154-156.
[3]韩军,陈高杰,王红坚,等.步行式挖掘机底盘纵向坡度适应性分析[J].解放军理工大学学报(自然科学版),2009,10(增刊1):38-42.
[4]邬俊奇,张云,施晓明,等.某型步履式挖掘机步行式底盘自由度分析[J].工程机械,2015(4):39-45.
[5]祖海英,赵伟民,韩佳轩.集装箱正面吊曲臂的有限元分析及优化[J].中国工程机械学报,2013(2):129-132.