某型号起落架撑杆稳定性分析

Stability Analysis of a Landing Gear Strut

在对主起落架撑杆结构及工作原理介绍的基础上,提出了通过尺寸驱动求解偏心距的方法,分析可知,通过连杆调节偏心距是偏心距调整最快捷且装配效率最高的一种工艺方法。同时开展了撑杆承压稳定性研究,通过试验数据分析可知,作动筒弹簧存在1 mm以上压缩量,仅调整压缩量的大小对e 1偏心距变化量没有决定性影响;零件间隙对承压稳定性影响较为显著,零件间隙量越小,撑杆稳定性越高。该研究为起落架撑杆及同类产品快速调整偏心距、装配出合格产品,提供了一种有效的分析、解决方案。

Based on the introduction of the structure and working principle of the main landing gear struts,a method of solving the eccentricity by dimension drive was put forward,and it was analyzed that adjusting the eccentricity through connecting rod was the quickest and the most efficient assembly method to adjust the eccentricity.Moreover,the study on the bearing stability of the strut was carried out.Through the analysis of the test data,it was known that there was more than 1 mm compression amount in the actuator cylinder spring,and the only adjustment of the compression amount had no decisive influence on the eccentricity variation of e 1.The clearance of parts had a significant influence on the stability of bearing pressure.The smaller of the clearance of parts was,the higher the stability of struts was.This study provided an effective analysis and solution for the rapid adjustment of the eccentricity of landing gear struts and similar products and the assembly of qualified products to produce qualifying products.