高刚度空间套筒展开机构级间锁紧技术研究

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中图分类号：TH122

DOI：10.3969/j.issn.1004-132X.2025.09.009 开放科学（资源服务）标识码（OSID）：

Research on Inter-stage Locking Technology for High Stiffness Space SleeveDeploymentMechanisms

GUAN Yingjun1ZHANG Mingqi1LU Huanquan1YANG Huisheng² SUN Baoyul* 1.School of Mechanical and Electrical Engineering，Changchun University of Technology， Changchun，l30012 2.Changchun Institute of Optics，Fine Mechanics and Physics，Chinese Academy of Sciences， Changchun，130033

Abstract： To address the challenges in achieving high-stiffness locking during the deployment of segmented space telescopes using sleeve mechanisms，a staged locking scheme was proposed for the secondary mirror sleeve-supported deployment mechanisms of long-focal-length，large-aperture space telescopes.Contact models between expansion petals and inner sleeve walls were established，and the normal contact behavior and load distribution pattrns during the locking processes were investigated.BernoulliEuler 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 asigned 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 rollinto place，the locking forces of the expansion flaps meet expectations，and the feasibility of the sleeve locking mechanism design is confirmed.

Key words： deployment mechanism； sleeve locking；passive locking； high stiffness;deflection deformation

0 引言

甚大口径反射镜收集光线的能力强，容易发现更暗更小的星体，所以空间望远镜越来越趋向于甚大口径的设计。（剩余11749字）