High-unfolding-folding-ratio unfolding mechanism suitable for space environment

Abstract

The invention provides a high-unfolding-folding-ratio unfolding mechanism suitable for a space environment. The unfolding mechanism comprises an upper structural plate, two limiting sleeves, two winding drums, two strip-shaped springs and a load mounting plate, wherein the upper structural plate is fixed on a detector, and the unfolding mechanism is integrally and fixedly connected with the detector; the two winding drums are located in the two limiting sleeves correspondingly and driven by a motor to rotate in a linkage mode, and synchronously drive the two strip-shaped springs to be wound and released; one ends of the two strip-shaped springs are fixed to the winding drums, and the extending ends, connected with the load mounting plate and drive the load mounting plate to ascend and descend; and the load mounting plate is used for a load task execution unit. According to the unfolding mechanism, the strip-shaped springs with the arc-shaped sections are adopted as core parts, so flexible folding and rigid unfolding of the unfolding mechanism are achieved; and the size and the length in the folded state are small, a supporting structure with certain rigidity can be obtained after unfolding, and the technical problems that a traditional unfolding mechanism cannot achieve the large unfolding-folding ratio, light weight and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of deep space detection and relates to a deployment mechanism, in particular to a deployment mechanism with a large deployment ratio suitable for space environments. Background technique [0002] Extraterrestrial celestial bodies are an important carrier for humans to understand the origin and evolution of the universe and the solar system, and carry rich scientific information. Therefore, it is of great significance to sample and return extraterrestrial celestial bodies. [0003] Before sampling an extraterrestrial body, the sampler must be extended from the detector to the surface of the extraterrestrial body through the deployment mechanism, and the sampler must be pressed against the surface of the extraterrestrial body with a certain pressure before the sampling task can begin. However, due to the difficulty of sampling and returning extraterrestrial celestial bodies, the resources on the detector are l...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, the inventors have carried out dedicated research and provided a large expansion-to-contraction ratio deployment mechanism suitable for space environments, using arc-shaped cross-section ribbon springs as core components to realize the flexible folding of the deployment mechanism and rigid unfolding; the volume and length in the folded state are small, and a support structure with a certain rigidity can be obtained after unfolding, which solves technical problems such as large unfolding ratio and light weight that cannot be realized by traditional unfolding mechanisms, thus completing the present invention

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