A kind of elastic extension rod expansion mechanism

A technology of unfolding mechanism and stretching rod, which is applied in the field of elastic stretching rod stretching mechanism, can solve the problems of low unfolding accuracy and folding ratio, poor unfolding performance and driving force, etc., so as to improve the unfolding accuracy, rigidity and reliability of unfolding sex, weight reduction effect

Active Publication Date: 2021-10-01
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, low folding-expansion ratio, poor deployment performance and driving force existing in the existing deployment mechanism

Method used

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  • A kind of elastic extension rod expansion mechanism
  • A kind of elastic extension rod expansion mechanism
  • A kind of elastic extension rod expansion mechanism

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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 includes a top cover 1, a first side plate 2-1, a second side plate 2-2, a cage 3 and a bottom plate 4, and the top cover 1 and the bottom plate 4 are installed on the cage respectively 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 an arrangement 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

An elastic extension rod expansion mechanism relates to an expansion mechanism. The present invention aims to solve the problems of low unfolding accuracy, low folding-expanding ratio, poor unfolding performance and driving force existing in the existing unfolding mechanism. In the present invention, the flattened elastic stretch rod is wound on the drum, and the expansion and retraction of the elastic stretch rod is controlled by the rotation of the drum, and the rocker mechanism controls the flattening or swelling of the elastic stretch rod; the root clamping mechanism clamps the root of the elastic stretch rod Fixed; the pressure wheel mechanism closely fits the layers of the elastic extension rod; the guide wheel mechanism guides the elastic extension rod during the process of unfolding or retracting; the friction wheel power transmission mechanism and the friction wheel mechanism are installed in the support frame, friction The wheel power transmission mechanism provides power for the friction wheel mechanism, and provides expansion force for the expansion of the elastic extension rod through the contact between the friction wheel mechanism and the elastic extension rod; the sliding lock mechanism is installed on the outer surface of the support frame and controls the compression and freed. The invention is used in the fields of aerospace and national defense science and technology.

Description

technical field [0001] The invention relates to an unfolding mechanism, in particular to an elastic extension rod unfolding mechanism, which belongs to the field of aerospace and national defense science and 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 my country's manned spaceflight, deep space exploration, space-based observation, and space attack and defense, it is necessary to apply a variety of super-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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/22B64G1/44H01Q1/08
CPCB64G1/222B64G1/44H01Q1/08
Inventor 从强林秋红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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