A Capturing Derotation Mechanism Suitable for Spinning Space Debris

Abstract

The invention provides a capture spin elimination mechanism suitable for spin space fragments. The capture spin elimination mechanism comprises a rotating part and a fixed part. Multiple finger mechanisms with underactuation mechanism forms are arranged on a shell at the front end of the rotating part, each finger mechanism is provided with multiple rotating joints, each joint is provided with a torsion spring, each finger is dragged by one rope to form an underactuation mechanism, bending actions can be completed, and adaptive capacity is achieved for contact shapes. The torsion spring of each joint resists traction force of the corresponding rope, and unbending power is provided for the fingers. All the fingers are arranged pairwise in an intersecting mode, and objects of different sizes can be held when the fingers close up. The ropes of all the fingers are fixed to a sliding block, and linkage can be achieved. The sliding block is located in the rotating part, can do translational motion relative to the rotating part along the rotating axis, but cannot rotate relative to the rotating part. The sliding block is driven by a lead screw-nut mechanism, and the sliding block is connected with a nut through a rotating pair.

Description

technical field [0001] The patent of the present invention relates to a capture and derotation mechanism, which can capture spinning space debris and stop its spin motion, and belongs to the field of space mechanisms. Background technique [0002] A large amount of space debris remains in low-Earth orbit, which seriously threatens space activities. Since space debris has no self-control ability, they all have a certain spin speed, and their outer contour shapes and sizes are also varied, and they do not have a general capture interface. [0003] Domestically, the Chinese patent application number CN201310503724.3 for the invention "Rope Net Type Space Debris Capture and Removal System" discloses a rope net type space debris removal system. The Chinese patent application No. CN201210228365.0, "A Rope Net Deployment Device Based on Thin-Wall Type Extension Arm", discloses another rope net type space debris capture device. Both of the above two inventions use rope nets to cap...

AI Technical Summary

Problems solved by technology

Among them, except for flying nets or flying claws, which have no special requirements for the shape of the captured object, other capture methods can only capture specific structures, and have poor adaptability to the shape of the captured object

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