Space on-orbit capturing device based on bionic gecko dry adhesive material

Abstract

The invention discloses a space on-orbit capturing device based on a bionic gecko dry adhesive material. The space on-orbit capturing device comprises an adhesion mechanism, a transmission mechanism, a drive mechanism and a bottom plate, wherein the adhesion mechanism comprises a loading tendon, a connecting tendon and the like as well as adhesion mechanism upper layers, flexible supporting parts and adhesion mechanism lower layers which are arranged in pairs; the adhesion mechanism upper layers are fixedly arranged on the lower bottom surface of the bottom plate; the flexible supporting parts are camped between the adhesion mechanism upper layers and the adhesion mechanism lower layers in a winding mode; adhesion materials are arranged on the lower surfaces of the adhesion mechanism lower layers; the two ends of the connecting tendon are fixedly arranged on the center positions of the adhesion mechanism lower layers separately; one end of the loading tendon is arranged on the middle position of the connecting tendon; the transmission mechanism comprises a plurality of fixed pulley assemblies, movable pulley assemblies and a return spring which are in series connected to form a closed loop through pulley lines; and the drive mechanism is started and the pulley lines are tightened to drive the movable pulley assemblies to move, the return spring is stressed to draw out, and the loading tendon and the connecting tendon are stressed to tighten, so that the adhesion mechanism lower layers generate tangential displacement, and the adhesion materials are in loading state to generate normal adhesion force.

Description

technical field [0001] The invention relates to a space on-orbit capture device, in particular to a space on-orbit capture device based on a bionic gecko dry adhesive material. Background technique [0002] In space microgravity and vacuum environment, space debris has different shapes and sizes, and the traditional clamping capture method is no longer applicable. Therefore, a new debris capture method is urgently needed. Through the research on the adhesion characteristics of gecko feet, it is found that the generation of the adhesion force of gecko feet requires certain movement conditions: first, a certain pre-pressure is required between the bionic feet and the adhered surface; The tangential loading force makes the setae on the sole of the foot bend, increases the contact area between the setae and the adhered surface, and generates sufficient van der Waals force; finally, when desorbing, the tangential loading force is unloaded, and a small pulling force is applied on ...

AI Technical Summary

Problems solved by technology

However, the adhesion devices in the prior art cannot fully meet the above-mentioned requirements for adhesion and desorption, and there are problems such as uneven adhesion effects of each adhesion unit.

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