Elastic hinge driving truss type foldable unit and foldable supporting arm

An elastic hinge and truss-type technology, applied in the direction of motor vehicles, space navigation equipment, space navigation aircraft, etc., can solve the problems of low repeated deployment accuracy, complex driving mechanism, and increased structural weight, so as to enhance the overall rigidity and repeatability. Unfolding precision, simple unwrapping control, and simple motion effects

Active Publication Date: 2015-01-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of complex driving mechanism, large folding volume, low repeated unfolding accuracy, greatly increased structural weight and low unfolding reliability of the existing articulated support arm, and further provides a truss-type truss type driven by elastic hinges. Detachable unit and detachable support arm

Method used

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  • Elastic hinge driving truss type foldable unit and foldable supporting arm
  • Elastic hinge driving truss type foldable unit and foldable supporting arm
  • Elastic hinge driving truss type foldable unit and foldable supporting arm

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Experimental program
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specific Embodiment approach 1

[0011] Specific implementation mode one: combine Figure 1-Figure 10 Explain that a truss-type foldable unit driven by elastic hinges in this embodiment includes an upper frame 1, a lower frame 4, N elastic hinged folding arms 3 and N sets of cable assemblies 2; the upper frame 1 and The lower frame 4 is an N-sided frame;

[0012] The upper frame 1 and the lower frame 4 are set in parallel, and the N vertices of the upper frame 1 and the N vertices of the lower frame 4 are set up and down correspondingly, and each vertex corresponding to the upper frame 1 and the lower frame 4 is passed through an elastic The hinged folding arms 3 are supported and rotatably connected, and a group of triangular prism cable assemblies 2 are arranged at the diagonals of the rectangular plane formed between the upper frame 1, the lower frame 4 and two adjacent elastic hinged folding arms 3 , where N is a positive integer, and 3≤N≤6.

[0013] The truss-type foldable unit driven by the elastic hi...

specific Embodiment approach 2

[0014] Specific implementation mode two: combination figure 1 with Figure 4 Note that the upper frame 1 and the lower frame 4 in this embodiment are both triangular or quadrilateral frames. With such arrangement, the structure is simple, the design is reasonable, and it is easy to use. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Specific implementation mode three: combination Figure 1-Figure 3 , Figure 5 , Image 6 Explain that each elastic hinge type folding arm 3 in this embodiment includes a unit upper folding arm 6, a unit lower folding arm 7 and a unit connection elastic hinge assembly 8, and the unit connection elastic hinge assembly 8 includes two elastic hinge connections Joint 10, two elastic hinge spring pieces 11 and four elastic hinge connection pressing blocks 9, the adjacent ends of the unit upper folding arm 6 and the unit lower folding arm 7 are respectively affixed to the elastic hinge connection joint 10, and the two elastic hinge springs The sheets 11 are symmetrically distributed side by side, and the two ends of the two elastic hinge spring sheets 11 are respectively glued to the corresponding elastic hinge connection joints 10, and the four elastic hinge connection pressure blocks 9 are divided into two pairs arranged symmetrically up and down, and each elastic hinge T...

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Abstract

The invention relates to truss type foldable units and foldable supporting arms formed by the same and particularly to an elastic hinge driving truss type foldable unit and a foldable supporting arm. The elastic hinge driving truss type foldable unit and the foldable supporting arm aim at solving the problems that the existing hinged supporting arm is complicated in driving mechanism, large in folding size and low in repeated unfolding accuracy and accordingly the structural weight is greatly increased and the unfolding reliability is low. The elastic hinge driving truss type foldable unit comprises an upper frame, a lower frame, N elastic hinge type folding arms and N groups of drawing cable assemblies; the upper frame and the lower frame are arranged in a parallel mode; N vertexes of the upper frame and N vertexes of the lower frame are arranged in an upper and lower corresponding mode; every two corresponding vertex angles formed between the upper frame and the lower frame are supported through the corresponding elastic hinge type folding arm and can be connected with each other in a rotating mode; every group of drawing cable assembly is arranged at the diagonal position in a rectangular plane which is formed by the upper frame, the lower frame and the two corresponding adjacent elastic hinge type folding arms. The elastic hinge driving truss type foldable unit and the foldable supporting arm are applied to a satellite, a space station and a space probe.

Description

technical field [0001] The invention relates to a truss-type foldable unit and a foldable support arm composed of the truss-type foldable unit, in particular to a truss-type foldable unit driven by an elastic hinge and the truss-type foldable The foldable support arm composed of units belongs to a repeatable expandable mechanism in one-dimensional space. Background technique [0002] With the rapid development of space communication, earth observation, deep space exploration, and manned spaceflight, the demand for large-scale, lightweight, and high-geometric stability aerospace space agencies has become very urgent, but limited by the volume of the rocket fairing Due to the limitation of space travel, it is necessary to design a space-expandable mechanism with a large expansion ratio, which is in a folded state during the transportation and launch stages, and unfolds into a working state after the spacecraft enters orbit. [0003] The space extension arm is mainly used to e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G1/22
Inventor 刘荣强郭宏伟史创邓宗全李冰岩
Owner HARBIN INST OF TECH
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