Pre-deployable annular deployable truss structure for driving rope tensioning management

Abstract

A pre-deployable annular deployable truss structure for driving rope tensioning management belongs to the field of satellite-borne large deployable antennas and comprises a novel sliding deployable hinge, a fixed hinge, a driving rope, a driving rope pulley, an elastic tensioning mechanism and the like. The novel sliding deployable hinge can slide up and down along a vertical rod (guide rail). Andan elastic driving device is added in the fixed hinge, so that the annular deployable truss mechanism can be pre-deployed to a relatively large caliber, and the deploying power in the later electricdeploying process is greatly reduced. Meanwhile, according to the related driving rope tensioning management method, through the elastic tensioning mechanism and a tensioning connecting element, it isguaranteed that the driving rope is always in a tensioning state in the pre-deploying process, and it can be guaranteed that the driving rope is free of the wire jumping phenomenon, hooking and winding possibility in the annular antenna deploying process. According to the method, a driving tensioning idea and a technical principle that the driving rope pulley is separated from the sliding deployable hinge in motion are mainly utilized to ensure that the driving rope of the antenna is tensioned and does not loosen in a pre-deploying process. The pre-deployable annular deployable truss structure is simple in structure, easy and convenient to operate and high in reliability, can be popularized and applied to various rope anti-jumping fields, and has a wide application prospect.

Description

technical field [0001] The invention relates to a pre-extendable ring-shaped unfolding truss structure for driving rope tension management, which belongs to the field of space-borne large-scale deployable antennas. Background technique [0002] The invention originates from a space-borne super-large-diameter deployable antenna, and aims to further improve the ability of communication satellites to collect and transmit weak signals. However, due to the requirements of the carrying envelope, the space-borne ultra-large-aperture antenna needs to be designed with a high storage ratio, which involves this kind of ring-shaped unfolded truss structure that can be pre-stretched for tension management of the driving rope. [0003] The ring truss is a moving part for the folding and unfolding of a super-large-diameter antenna. It is a closed polygonal ring formed by 30 quadrilateral units with the same structure connected by hinges with an angle of 120°. The ring truss is mainly compo...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to solve the storage ratio problem of the existing super-large-diameter space-borne loop antenna, a pre-extendable ring-shaped unfolded truss structure for driving rope tension management is proposed. This ring-shaped unfolded truss structure includes a A new type of sliding unfolding hinge that can slide up and down along the vertical rod (rail)

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