Sensitive plant simulating variable topology folding and unfolding mechanism employing rigidity hinge connection

Abstract

The invention provides a sensitive plant simulating variable topology folding and unfolding mechanism employing rigidity hinge connection. An upper layer and a lower layer of a rotary machine base ofthe folding and unfolding mechanism are corresponding to four pin roll bases. One end of each support rod is connected to a pin roll base through a pin roll and two sides of each support rod are connected with four-rod mechanisms through the pin rolls. Each four-rod mechanism includes a drive rod, a connection rod and a frame connecting rod. One end of each drive rod is connected with the corresponding support rod through a pin roll while the other end is connected with the corresponding connection rod through a pin roll. One end of each connection rod is connected with the corresponding driverod through a pin while the other end is connected with the frame connecting rod through a pin roll. One end of the frame connecting rod is connected with the corresponding rod through a pin roll while the other end is connected with the corresponding support rod through a pin roll. One end of each rigidity hinge is connected with a corresponding foldable module while the other end is connected with another foldable module. According to the invention, through movement of the rotary machine base, different modules are formed, so that requirements of different spaceflight working can be met. Besides, the mechanism provided by the invention has characteristics of low weight, large folding ratio, simple structure, simple folding and unfolding process, high stability, high reliability, high rigidity, low manufacture cost and good promotion application effect.

Description

technical field [0001] The invention relates to a folding mechanism, in particular to a variable topology folding mechanism imitating the mimosa rigid hinge connection. Background technique [0002] Mimosa is a leguminous perennial herb or subshrub that likes to grow in warm and humid areas. If you touch its leaves lightly with your hands, the leaves will immediately close together. People also call it induction grass. Mimosa cells are supported by the tiny net-like protein "actin". When the closing movement occurs, the phosphoric acid of actin will fall off. Create a closing motion. [0003] With the development of aerospace technology, deployable mechanisms are widely used in satellite communications, deep space exploration, and space station construction. In order to meet the multi-functional, multi-band, large-capacity, high-power and long-life needs of the deployable mechanism, as well as the space constraints of the carrier, the deployable mechanism has a large foldi...

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Problems solved by technology

[0004] Chinese patent 201410538119.4 discloses a spherical antenna support mechanism. The foldable unit of the invention is complicated, and the folding process is complicated. When the folding mechanism enters the space orbit, it is difficult to deploy the mechanism to the working state; The rib mechanism is a modular space curved surface folding antenna mechanism. This invention increases the stability and rigidity of the expandable mechanism through multiple tensioned stays. In the stressed state, fatigue failure will occur, which will reduce the stability and rigidity of the expandable mechanism; Chinese patent 201510939297.2 discloses a support arm folding mechanism for rapid erection and withdrawal of radar antennas. This invention uses guide rails and gear teeth Folding is realized in the form of strips, which increases the production cost of the mechanism and is poor in popularization and applicability

[0005] At present, there is no invention of a folding mechanism that has the characteristics of light weight, large folding ratio, simple structure, simple folding process, high stability, high reliability, high rigidity, low production cost, and good promotion and application. design

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