矿用挖掘机斗杆的动态特性  

Dynamic Property Analysis of Bucket Handle for Mine Digger

作　　者：郑德超[1] 秦飞[2] 

机构地区：[1]内蒙古科技大学机械工程学院,内蒙古包头014010 [2]北京工业大学,北京100022

出　　处：《煤矿机械》2009年第6期37-39,共3页Coal Mine Machinery

摘　　要：挖掘机由于工作环境恶劣,矿岩块度不均匀,启制动频繁等原因,作业中常常会发生堵转现象,斗杆是直接受到冲击的主要构件,遭受破坏的可能性最大,长期以来其性能的好坏一直是生产企业和设计部门共同关心的问题。分析了疲劳破坏交变应力产生的主要原因-强迫振动,讨论在堵转工况下斗杆动应力的变化特性,输出斗杆的应力-时间历程,探讨动应力对斗杆局部的影响,为提高斗杆强度、刚度、可靠性提供必要的参考。Because of the mine digger work environment is very bad, the ore rock piece is uneven, starting and braking frequently, therefore, often may mssingle happened rotate a phenomenon. The bucket handle is pounded directly, the possibility being destroyed is maximal. With bucket handle＇ s fracture destroying, dynamic stress change characteristic property are discussed ,and output development course of the stress - time , and are analyzed dynamic stress bringing effect about part of the bucket handle.

关 键 词：斗杆 有限元 模态 堵转 动态响应 

分 类 号：TD422.2[矿业工程—矿山机电]