新型液压爬升机主要零部件疲劳可靠性评估

The Fatigue Reliability Assessment of the Main Components of the New Hydraulic Climbing Jack

基于现行液压爬升机成本高、提升效果不佳等缺点,研究了一种受力均衡、工作稳定的液压爬升机。首先,介绍新型液压爬升机的结构设计和工程过程,其次运用动力学分析软件ADAMS对液压爬升机进行动力学分析,得出液压爬升机主要零部件爬升杆和棘爪的动力学特性,最后根据有限元理论、疲劳可靠性线性损伤累积理论运用分析软件workbench对新型液压爬升机棘轮和棘爪进行应力分析和疲劳可靠性分析,得出液压爬升机主要零部件疲劳可靠性寿命。该分析对液压爬升机的研发具有一定的指导意义。

Based on the current high cost and poor lifting performance of hydraulic climbing jacks,a study was conducted on a hydraulic climbing jack that is force-balanced and stable in operation.Firstly,the structural design and engineering process of the new hydraulic climbing jack are introduced.Secondly,dy namic analysis of the hydraulic climbing jack is carried out using the dynamics analysis software ADAMS,obtaining the dynamic characteristics of the main components of the hydraulic climbing jack,namely the climbing rod and pawl.Finally,based on finite element theory and the linear damage accumulation theory of fatigue reliability,stress analysis and fatigue reliability analysis of the new hydraulic climbing jack's ratchet and pawl are conducted using the analysis software workbench,determining the fatigue reliability life of the main components of the hydraulic climbing jack.This analysis provides some guidance for the development of hydraulic climbing jacks.