A single-degree-of-freedom expandable unit and its cylindrical surface expandable mechanism

A degree of freedom, cylindrical surface technology, used in building structures, buildings, etc., can solve problems such as poor bearing performance, low storage rate, multiple gaps, etc., to improve space utilization, wide range of functions, and reduce rotating pairs. and the effect of the number of members

Active Publication Date: 2021-10-19
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Extensible mechanisms in the prior art are often only composed of straight rods, which can only achieve flat folding, and the flat folding mechanism has poor load-bearing performance when used in the dome of the shelter
The existing expandable mechanism usually has a lot of gaps in the fully folded state, so the storage rate is not high
In addition, the existing deployable mechanisms have room for improvement in terms of drive, structural stability, etc.

Method used

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  • A single-degree-of-freedom expandable unit and its cylindrical surface expandable mechanism
  • A single-degree-of-freedom expandable unit and its cylindrical surface expandable mechanism
  • A single-degree-of-freedom expandable unit and its cylindrical surface expandable mechanism

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Embodiment Construction

[0038] As shown in the figure, the present invention proposes a single-degree-of-freedom expandable unit and its cylindrical expandable mechanism. The cylindrical expandable mechanism is composed of a powered expandable unit and several non-powered expandable units. become.

[0039] The power expandable unit 30 is composed of a first corner bar 1, a second corner bar 5, a third corner bar 7, a fourth corner bar 9, a first long plane bar 4, a second long plane bar 8, a first long arc Rod 6, the second long arc rod 10, large pulley 12, the first small pulley 14, the second small pulley 16, the third small pulley 17, the first soft steel cable 2, the second soft steel cable 3, the rod It consists of a first rotating shaft 13, a fixed shaft 15, a second rotating shaft 18 and several pin shafts 11 which are connected to each other. Described first corner bar 1, second corner bar 5, the 3rd corner bar 7 and the 4th corner bar 9 all are connected on different planes by screw with th...

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Abstract

A single-degree-of-freedom expandable unit and the cylindrical surface expandable mechanism formed by it are composed of a powered expandable unit and several non-powered expandable units by sharing a T-shaped bar and a cross-shaped bar; the The power expandable unit and the non-power expandable unit are in a rectangular structure when fully expanded, and four corner bars are distributed at the four vertices of the rectangle and are connected by two long plane bars and two long circular arc bars; the power expandable The unit's first angle rod, first long plane rod and second angle rod are equipped with a rope pulley mechanism to form two transmission closed loops; by controlling the relative rotation of the first angle rod, first long plane rod and second angle rod , the mechanism achieves a single degree of freedom; the mechanism has fewer rods and a simple structure; the mechanism unfolds smoothly; the mechanism is a single degree of freedom, and only the first angle rod is driven to realize the rapid storage and deployment of the mechanism, and the drive is simple , easy to control, and can further improve the construction speed, strength and stability of temporary medical or military shelters.

Description

technical field [0001] The invention relates to the field of expandable mechanisms, in particular to a single-degree-of-freedom expandable unit and a cylindrical surface expandable mechanism formed thereof. Background technique [0002] Expandable mechanism refers to a type of mechanism that can be unfolded from a folded state to a predetermined state. It has the advantages of large bearing capacity but small space when folded, flexible retractable and convenient transportation. The expandable mechanism generally adopts a modular design, that is, several identical modules form a network through a special connection method, and each expandable module is called an expandable unit. In recent years, deployable mechanisms have been widely used in aerospace engineering, civil engineering, medical treatment, military and other fields, such as the construction of temporary medical or military shelters, gymnasium openable domes and other structures. [0003] Patent document CN102820...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/343
CPCE04B1/34384E04B1/343
Inventor 黄龙曾鹏尹来容胡波徐晓强
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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