摘要
针对一种端部锁紧液压缸在反复锁紧、解锁过程中,锥套易疲劳断裂,导致液压缸无法锁紧的原因进行了分析,建立了数字化模型,提出了锥套新的过渡曲线和材料的改进方案,并对新的过渡曲线尺寸参数做出了分析。理论分析与仿真结果表明,采用新的锥套结构和新材料后,能有效降低零件的应力集中现象,提高零件的疲劳强度,延长液压缸使用寿命。
In the process of repeated locking and unlocking of an end locking hydraulic cylinder,its easy to cause fatigue fracture of the coneshape sleeve.It′s the reason that the hydraulic cylinder fails to lock.Based on the analysis of reasons for the failure of cone sleeve,a digital construction model is established.And a new transition curve and a material improvement scheme for cone-shape sleeve are proposed.The size parameters of the new transition curve are analyzed.The theoretical analysis and simulation results show that after adopting the new cone sleeve structure and new materials,we can reduce the stress concentration phenomenon.And the fatigue strength of parts can be improved.Then the service life of lock hydraulic cylinder can be prolonged.
作者
梁齐齐
熊瑞平
赵亚文
乔治
罗勇
LIANG Qiqi;XIONG Ruiping;ZHAO Yawen;QIAO Zhi;LUO Yong(School of Manufacturing Science and Engineering,Sichuan University,Chengdu,Sichuan610065)
出处
《液压与气动》
北大核心
2018年第4期105-108,共4页
Chinese Hydraulics & Pneumatics
关键词
锁紧液压缸
疲劳断裂
应力集中
强度
过渡曲线
lock hydraulic cylinder
fatigue fracture
stress concentration
strength
transition curve
