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Deployable cable pole dome structure

A technology of cable-rod and ring-shaped link mechanism, which is applied to the structure of the dome, arch structure, building components, etc., can solve the problems of small span and weak rigidity of the structure, and overcome the many and messy rods, light weight, Simplicity of design and construction

Inactive Publication Date: 2014-04-16
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, some scholars have proposed a variety of deployable cable-strut structures, but the span of the structure used is small, and its rigidity is weak

Method used

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  • Deployable cable pole dome structure
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Embodiment Construction

[0020] A deployable cable-strut dome structure, such as figure 1 As shown, including: the inner cable-rod system and the outer single-degree-of-freedom ring linkage mechanism, such as figure 2 As shown, the single-degree-of-freedom circular linkage mechanism is composed of n scissor units (4≤n≤800) and cables, and the n scissor units pass through the upper node 1 of the bar and the lower node 2 of the bar Connected end to end to form a ring-shaped linkage mechanism, the passive cable 4 passes through the intermediate pin joint nodes 3 of all scissor units to form a ring, and the active cable 5 connects the upper node 1 of the scissor unit and the lower node of the bar 2. The scissor unit, as image 3 As shown, two rods of equal length are connected by a column hinge, and the column hinge is located in the middle of the rods. Each rod can only rotate relative to the axis perpendicular to the plane where the two rods are located, while the other rods are free degree is compl...

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Abstract

The invention discloses a deployable cable pole dome structure, comprising an inner cable pole body and an external single-freedom-degree annular connecting bar mechanism, wherein the single-free degree annular connecting bar mechanism comprises at least four shearing type units, a passive cable and an active cable. The invention uses the single-freedom-degree annular connecting bar mechanism to drive the dome structure to fold and unfold, thus number of driving devices is reduced; the active cable and the passive cable are arranged in the external annular connecting bar mechanism, and the prestressing force exists at a full extension state, so that the rigidity of the structure is increased and the material does is reduced; only the active cable needs to be fixed at a full extension state, and an additional locking device is not needed; a coverage range of the dome structure is provided by the inner cable pole body, thus, the external load of the structure is mainly born by the inner cable pole body; the inner cable pole body is composed of a high-strength inhaul cable and a pressure bar; the self weight is light; and the rigidity is mainly provided by the prestressing force, and the stress performance is excellent.

Description

technical field [0001] The invention relates to a dome structure, in particular to a dome structure with expandable cable rods. Background technique [0002] The deployable structure is a new type of structure developed in the past half a century, and it plays an important role in the fields of aerospace, building structure and military engineering. The main feature of a deployable structure is that it has two stable configurations: a fully folded state and a fully unfolded working state. In the folded state, the structure is gathered in a certain shape, and under the action of external driving force, the structure is gradually unfolded, reaching the fully unfolded working state, and then locked into a stable state. [0003] The cable-strut structure system is composed of high-strength cables and compression rods, which has a small mass and a large storage rate, and the nodes connected by the cable-struts are relatively simple. The basic feature of the system is that part ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/32
Inventor 蔡建国冯健
Owner SOUTHEAST UNIV
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