中国机械工程2025，Vol.36Issue(9)：1980-1988,9.DOI:10.3969/j.issn.1004-132X.2025.09.009
高刚度空间套筒展开机构级间锁紧技术研究
Research on Inter-stage Locking Technology for High Stiffness Space Sleeve Deployment Mechanisms
摘要
Abstract
To address the challenges in achieving high-stiffness locking during the deployment of seg-mented space telescopes using sleeve mechanisms,a staged locking scheme was proposed for the second-ary mirror sleeve-supported deployment mechanisms of long-focal-length,large-aperture space tele-scopes.Contact models between expansion petals and inner sleeve walls were established,and the normal contact behavior and load distribution patterns during the locking processes were investigated.Bernoulli-Euler beam theory was employed to analyze the normal contact forces between the expansion petals and the sleeve.The relationship among inter-stage locking force,design clearance and locking point positions was derived and validated through finite element methods.The Palmgreen formula was applied to analyze the ascending displacement of the driving ring's inclined surfaces.The design parameters of the inclined sur-faces were determined,and finite element methods were employed to analyze the inter-stage locking force when rounded values were assigned to the ascending displacement.The magnitude and distribution patterns of the locking forces were obtained.An experimental prototype of the locking mechanisms was constructed,the experimental results indicate that rolling cylinders smoothly roll into place,the locking forces of the ex-pansion flaps meet expectations,and the feasibility of the sleeve locking mechanism design is confirmed.关键词
展开机构/套筒锁紧/无源锁紧/高刚度/挠度变形Key words
deployment mechanism/sleeve locking/passive locking/high stiffness/deflection defor-mation分类
机械制造引用本文复制引用
关英俊,张铭起,逯焕泉,杨会生,孙宝玉..高刚度空间套筒展开机构级间锁紧技术研究[J].中国机械工程,2025,36(9):1980-1988,9.基金项目
国家自然科学基金(12073028,12473084) （12073028,12473084）
