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Elastic extending rod unfolding mechanism

A technology of unfolding mechanism and extension rod, which is applied in the field of elastic extension rod deployment mechanism, which can solve the problems of poor deployment performance and driving force, low deployment accuracy and low folding-expansion ratio, so as to improve the rigidity and reliability of deployment, and improve the deployment Accuracy, easy molding effect

Active Publication Date: 2019-01-29
BEIJING INST OF SPACECRAFT SYST ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low deployment accuracy and low folding ratio, poor deployment performance and driving force existing in the existing deployment mechanism

Method used

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  • Elastic extending rod unfolding mechanism
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  • Elastic extending rod unfolding mechanism

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Experimental program
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Effect test

specific Embodiment approach 1

[0029] Specific implementation mode one: combine Figure 1 to Figure 10 Describe this embodiment, an elastic extension rod expansion mechanism of this embodiment includes a support frame, a roller mechanism and a rocker mechanism; the flattened elastic extension rod is wound on the roller of the roller mechanism located in the middle of the support frame, and passed The rotation of the drum controls the expansion and retraction of the elastic rods, and the rocker mechanism located around the drum mechanism converts the rotational motion of the drum mechanism into a translational motion, controlling the flattening or swelling of the elastic rods; it is characterized in that it also includes friction wheels Mechanism, friction wheel power transmission mechanism, sliding lock mechanism, pressure wheel mechanism, guide wheel mechanism and root clamping mechanism, the root clamping mechanism is installed inside the drum of the roller mechanism and fixes the root of the elastic exten...

specific Embodiment approach 2

[0031] Specific implementation mode two: combination figure 1 and figure 2 Describe this embodiment, the support frame of this embodiment comprises top cover 1, first side plate 2-1, second side plate 2-2, cage 3 and bottom plate 4, and top cover 1 and bottom plate 4 are respectively installed on the cage 3 on the upper and lower end faces; the second side plate 2-2 has four, the first side plate 2-1 is two circular side plates, and the two circular side plates are installed symmetrically along the length direction of the cage 3, each A second side plate 2-2 is respectively installed on both sides of the circular side plate. Such setting provides support for the installation of other components, and other components and connections are the same as those in Embodiment 1.

specific Embodiment approach 3

[0032] Specific implementation mode three: combination figure 2 and image 3 Describe this embodiment, the drum mechanism of this embodiment comprises drum 5, main frame 34, ring gear 29, roller bearing 31, pinion 35, first planetary gear reducer 53 and first motor 47, and main frame 34 is installed on In the support frame, the center of the main frame 34 is provided with a central axis, and the two ends of the main frame 34 are respectively equipped with a roller bearing 31 arranged on the first side plate 2-1, and the main frame 34 rotates around the central axis; The cylinder 5 is fixed on the main frame 34, the ring gear 29 is fixedly installed on the first side plate 2-1, the first motor 47 and the first planetary gear reducer 53 are installed in the main frame 34, the output end of the first motor 47 Connected with the first planetary gear reducer 53, the pinion gear 35 is rotatably mounted on the first side plate 2-1, the pinion gear 35 is installed at the output end ...

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Abstract

The invention provides an elastic extending rod unfolding mechanism and relates to an unfolding mechanism. The problems of low unfolding accuracy, low folding-unfolding ratio, poor unfolding performance and poor driving force of an existing unfolding mechanism are solved. According to the elastic extending rod unfolding mechanism, a flattened elastic extending rod is wound on a roller; through therotation of the roller, the elastic extending rod is controlled to extend and close; a rocker arm mechanism controls the elastic extending rod to be flattened or swollen; a root clamping mechanism fixes the root of the elastic extending rod; a pressing wheel mechanism enables each layer of the elastic extending rod to fit each other closely; a guide wheel mechanism guides the elastic extending rod in the unfolding or closing process of the elastic extending rod; a friction wheel power transmission mechanism and a friction wheel mechanism are both mounted in a supporting frame; the friction wheel power transmission mechanism provides power for the friction wheel mechanism; through contact between the friction wheel mechanism and the elastic extending rod, an unfolding force is provided forthe unfolding of the elastic extending rod; and a sliding lock mechanism is mounted on the external side surface of the supporting frame and controls the friction wheel mechanism to be pressed and released. The elastic extending rod unfolding mechanism is used for the field of aerospace and defence-related science and technology.

Description

technical field [0001] The invention relates to a deployment mechanism, in particular to an elastic extension rod deployment mechanism, which belongs to the field of aerospace and national defense technology. Background technique [0002] Deployable space structure technology is the main means to solve the launch envelope limitation of large-scale structures of spacecraft. With the implementation of major aerospace projects such as China's manned spaceflight, deep space exploration, space-based observation, and space attack and defense, it is necessary to apply various ultra-large spacecraft deployable structures. Due to the demand for high-power and high-precision satellite communications, there is an urgent need for large-diameter antenna structures. In the future, super-large expandable antennas with an area of ​​several hundred square meters will be used in geostationary orbits; the length of large-area solar cell arrays planned for space solar power plants will reach M...

Claims

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Application Information

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IPC IPC(8): B64G1/22B64G1/44H01Q1/08
CPCB64G1/222B64G1/44H01Q1/08
Inventor 郭宏伟刘刚峰杨皓宇刘荣强邓宗全
Owner BEIJING INST OF SPACECRAFT SYST ENG
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