Rod-cable deployable mast

Abstract

The invention discloses a rod-cable deployable mast which comprises three telescopic deployable units, wherein each deployable unit comprises 6 pulleys, 4 rod components, one connector and 6 cables, the rod components are connected with the connector through revolute pairs, each cable is guided by each pulley, and the whole deployable mechanism is controlled to be deployed and retracted through control of the length change of the cables. The whole deployable mechanism is located in the same plane, and the rod components are located in included angles of the cables, so that the retracting and deploying stability of the whole deployable mechanism is guaranteed. The rod-cable deployable mast has good deploying and retracting capability, and a large deployable structure with the advantages of light mass, high accommodating rate, good deployability and the like can be constructed by splicing multiple units simultaneously. By means of the advantages of the structure, if the length of the cables in the structure is unchanged and no locking device is required, the mechanism can be locked in any position at any moment.

Description

technical field [0001] The present invention relates to a deployable structure. Background technique [0002] Deployable structures have demands and applications in many fields such as architecture and aerospace. For example, in the field of aerospace, due to the contradiction between the large-scale structure and the limited volume of the payload compartment of the launch vehicle, the deployable structure has been developed in this field, and new types of deployable structures such as extendable arms, extendable antennas, and extendable solar panels have emerged. structure. [0003] The deployable structure in the form of a cable-strut has a smaller mass than the deployable structure in the form of a simple rod. The expanded state of the expandable structure is generally its working state. To maintain the unfolded state for a long time, most deployable structures are locked by adding locking devices or other components; moreover, the extension arm needs to move synchrono...

AI Technical Summary

Problems solved by technology

To maintain the unfolded state for a long time, most deployable structures are locked by adding locking devices or other components; moreover, the extension arm needs to move synchronously with all components during the process of unfolding or folding, which also requires the addition of gears at the hinge joints Or other synchronous devices, whether adding locking devices or synchronizing devices, this increases the complexity and quality of the mechanism, making the mechanism cumbersome

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