摘要
在支架往复式的升柱降柱以及多次的冲击载荷共同作用下支架容易发生塑性变形,最终会引起支架主要承载结构的疲劳性失稳破坏。基于此,对液压支架的主要承载结构和主要传递载荷结构进行了疲劳性分析。分析认为:主要传递载荷构件的寿命要高于主要承受载荷构件的寿命,支架内部的连接耳板位置一般是疲劳寿命最短的位置,根据矿井规程中对支架顶梁和底座可承受循环载荷作用次数的规定可得支架可以满足耐久性试验的要求。
the interaction of multiple columns and under impact loading stents are prone to plastic deformation or drop in the column support reciprocating,will eventually cause the fatigue of the main bearing support structure instability.Based on this,the main bearing structure of the hydraulic support and the main structure of the fatigue load transfer analysis.The analysis shows that the main component of the load transfer is higher than that of the main life load component life,connecting ear plate position scaffold is generally the fatigue life of the shortest position,according to the rules of mine The supporting beam and the base can withstand the number of times of cyclic loading,so that the support can meet the requirements of durability test.
出处
《机械管理开发》
2018年第2期44-46,共3页
Mechanical Management and Development
关键词
液压支架
疲劳性
疲劳寿命
hydraulic support
fatigue performance
fatigue life
