起落架收放机构关节轴承磨损分析与试验研究OA
Wear Analysis and Experimental Study of Spherical Plain Bearing in Landing Gear Retraction Mechanism
航空低速重载自润滑关节轴承作为起落架收放系统的核心运动部件,其动态性能与磨损特性直接决定了机构的可靠性.为检验关节轴承在某型起落架收放机构作动筒上的综合性能,本文建立了含间隙的收放机构动力学参数化模型及关节磨损模型,通过数值仿真预测衬垫磨损深度.然后开展关节轴承随起落架收放台架试验,并设计专用试验台架测试其空载启动力矩、衬垫磨损量及重载下摩擦力矩等关键性能参数.研究结果表明:所构建的磨损模型预测精度达95%以上;关节轴承在实际载荷谱作用下展现出良好的服役性能,在12 500次收放循环中均未出现异常磨损或卡滞现象,能够满足起落架收放机构的严苛使用要求.
As the core moving part of the landing gear retraction system,the dynamic performance and wear characteristics of the aeronautic low-speed heavy-load spherical plain bearings with self-lubrication directly determine the mechanism reliability.In order to test the comprehensive performance of the spherical plain bearing on the actuator cylinder of a landing gear retracting mechanism,the dynamic parametric model and joint wear model of the retraction mechanism with clearance are established in this paper,and the wear depth of the liner is predicted by numerical simulation.Then,the spherical plain bearing with the landing gear retraction bench test is carried out,and the special test bench is designed to test its key performance parameters such as starting torque under no load,liner wear,and friction torque under heavy load.The results show that the prediction accuracy of the wear model is more than 95%.The spherical plain bearing shows good service performance under the actual load spectrum,and no abnormal wear or stagnation occurs in 12 500 retraction cycles,which can meet the stringent requirements of the landing gear retraction mechanism.
王宁博;李福;鄢雨濛;梁涛涛;印寅
沈阳飞机设计研究所,沈阳 110035沈阳飞机设计研究所,沈阳 110035南京航空航天大学航空航天结构力学及控制全国重点实验室,南京 210016南京航空航天大学通用航空与飞行学院,溧阳 213300南京航空航天大学航空航天结构力学及控制全国重点实验室,南京 210016
航空航天
起落架收放机构自润滑关节轴承衬垫磨损试验运动精度
landing gear retraction mechanismself-lubricating spherical plain bearingliner weartestkinematic accuracy
《南京航空航天大学学报（自然科学版）》 2026 (2)
350-361,12
国家自然科学基金(52172368,52302453,52275114)江苏省自然科学基金(BK20220135)航空航天结构力学及控制全国重点实验室(南京航空航天大学)自主研究课题(MCAS-I-0224G03)南京航空航天大学前瞻布局科研专项资金(1001-ILB23008).
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