High-storage-ratio modular folding and unfolding supporting truss

Abstract

The invention discloses a high-storage-ratio modular folding and unfolding supporting truss, which relates to the technical field of aerospace machinery, in particular to a high-storage-ratio modularfolding and unfolding supporting truss of a framework type antenna and a space dust detector of an aircraft. In the changing process from the folded state to the unfolded state, on one hand, the central rod compression spring drives the central rod sliding block to drive the inclined web member to be unfolded, on the other hand, the outer rod compression spring drives the crank sliding block mechanism to drive the inclined web member to be unfolded, and the leaf spring drives the lower chord member to assist in unfolding. Due to the design of locking mechanisms in the chassis and the outer rodconnector, the unfolding radian of the supporting truss is controllable, and the supporting truss can be unfolded into a plane or a curved surface. The grooves in the inclined web member are matchedwith the elastic positioning pins to limit the relative positions of the telescopic rods of the inclined web member, and the maximum unfolding length of the inclined web member is limited. Due to thedesign of the crank sliding block mechanism, the unfolding synchronism of the two adjacent upper chords or the two adjacent inclined web members in the unfolding process of the folding and unfolding supporting truss is guaranteed.

Description

technical field [0001] The invention relates to the technical field of aerospace machinery, in particular to a framed antenna of an aircraft and a high storage ratio modular foldable support truss for a space dust detector. Background technique [0002] With the vigorous development of aerospace technology, the aircraft structure tends to be larger and larger, which puts forward higher requirements for the space folding mechanism. The foldable support truss is an important part of the frame-type foldable antenna and space dust detector. It plays an important role in supporting the metal reflective mesh or film, maintaining the structural accuracy and maintaining the stability of the structure. The existing foldable support truss has less storage than High and most of them are single-module design, which limits the expansion diameter of the folding support truss, and at the same time creates a contradiction with the space volume and launch cost of the vehicle. Therefore, a fo...

AI Technical Summary

Problems solved by technology

The foldable support truss is an important part of the frame-type foldable antenna and space dust detector. It plays an important role in supporting the metal reflective mesh or film, maintaining the structural accuracy and maintaining the stability of the structure. The existing foldable support truss has less storage than High and most of them are single-module design, which limits the expansion diameter of the folding support truss, and at the same time creates a contradiction with the space volume and launch cost of the vehicle. Therefore, a folding support that can meet the requirements of large diameter, light weight and high storage ratio is developed. Urgent demand for truss

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