液压凿岩机活塞疲劳强度分析  

Analysis on the Fatigue Strength of Piston of Hydraulic Rock Drill

作　　者：薛二鹏[1] 王立华[1] 宋森熠[1] 

机构地区：[1]昆明理工大学机电工程学院,云南昆明650093

出　　处：《矿山机械》2008年第23期19-22,共4页Mining & Processing Equipment

摘　　要：主要对液压凿岩机活塞的疲劳强度进行了研究,并对其失效形式进行了分析,其主要的失效形式是撞击面的疲劳损坏和杆身的疲劳断裂。并以 YYG90B 凿岩机活塞为例进行了有限元强度分析,同时对疲劳安全系数进行了计算。最后提出了提高活塞疲劳强度的方法。The fatigue strength of piston of hydraulic rock drill is mainly studied and its failure modes are analyzed. The main failure modes of piston are the fatigue damage of impact surface and the fatigue fracture of the pole. Taking the YYG90B rock drill piston as the example, the finite element strength analysis is carried out. In addition, the fatigue safety faetor of piston is calculated. Finally, the method of improving fatigue strength of piston is put forward.

关 键 词：活塞 失效分析 疲劳强度 有限元 

分 类 号：TD421.2[矿业工程—矿山机电]