A Force-Limited Compression-Release Mechanism

Abstract

The invention discloses a force-limited compression release mechanism. The invention can realize segmental compression of large flexible solar wing sun blankets, and meet the requirements of different compression forces inside the solar blanket and solar blanket box boards. The present invention includes a pressing assembly and a base assembly, wherein the pressing assembly includes a pressing rod, a lock nut, a separation spring, a spring sheath, an escape cap and a mounting seat for the pressing rod, and the base assembly includes a pyrotechnic separation nut , Positioning guide column, force limiting screw, lock nut and separation nut mounting seat. When compressing the solar blanket, the compression rod is connected with the pyrotechnic separation nut, and the compression force is loaded through the lock nut to realize the connection between the upper and lower box plates and apply the compression load; when the internal compression load of the solar blanket reaches the required value , through the force limiting screw to prevent the compression force from being further transmitted to the sun blanket; the lock nut continues to load, and the compression force of the secondary load is transmitted to the force limiting screw to achieve a higher pre-set between the upper and lower box panels of the sun blanket Tight load requirements.

Description

technical field [0001] The invention relates to the technical field of deployment mechanisms, in particular to a force-limited compression release mechanism. Background technique [0002] At present, the compression and release mechanism of the domestic spacecraft deployment mechanism mostly adopts the compression rod type compression and release form, which is similar to the screw tightening and fixing objects. Control, and the compression force inside the compacted object is determined by the structural characteristics of the compacted object itself. When compressing the solar blanket of a large flexible solar wing, since the solar blanket is equipped with fragile solar cells and glass cover sheets, the compression release mechanism of the pressing rod type cannot ensure the internal compression of the solar blanket. It is easy to cause damage to the internal parts of the sun blanket. At the same time, it is also necessary to ensure a high level of compression between th...

AI Technical Summary

Problems solved by technology

When compressing the solar blanket of a large flexible solar wing, since the solar blanket is equipped with fragile solar cells and glass cover sheets, the compression release mechanism of the pressing rod type cannot ensure the internal compression of the solar blanket. It is easy to cause damage to the internal parts of the sun blanket

At the same time, it is also necessary to ensure a high level of compression between the outer box panels of the solar blanket, so as to prevent the box panels of the solar blanket from loosening under the vibration and impact during launch, and lose the support and protection of the solar blanket.

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