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Scissors-based quadrilateral unit planar array developable mechanism

A planar array and quadrilateral technology, applied in the direction of folded antennas, etc., can solve the problems of complex system structure, sensitive shock response, high manufacturing cost, and achieve the effects of high system stiffness, insensitive shock response, and stable deployment process.

Inactive Publication Date: 2014-02-26
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to avoid the shortcomings of the existing technology and overcome the problems of complex system structure, low deployment accuracy, high manufacturing cost, and sensitive impact response, the present invention proposes a scissors-based quadrilateral unit planar array expandable mechanism

Method used

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  • Scissors-based quadrilateral unit planar array developable mechanism

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Embodiment Construction

[0027] This embodiment is a scissors-based quadrilateral unit planar array expandable mechanism, which is composed of a plurality of scissors quadrilateral units in horizontal and vertical arrays, and each scissors quadrilateral unit mechanism is composed of eight corner point hinge components, four scissor components, two It consists of a central hinge assembly and eight diagonal rod assemblies.

[0028] see figure 1 , figure 2 , image 3 , the scissors-based quadrilateral unit expandable mechanism is composed of a plurality of identical scissors quadrilateral unit mechanisms that are respectively connected horizontally and vertically. In each scissors quadrilateral unit mechanism, the central hinge assembly 3 is arranged in the vertical direction. The short axis of the diagonal rod assembly 4 is connected with the sliding bearing of the diagonal rod assembly 4, and the diagonal rod assembly 4 is arranged in a cross in the vertical direction, and the other end of the diago...

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Abstract

The invention discloses a scissors-based quadrilateral unit planar array developable mechanism. A plurality of scissors quadrilateral units are combined in transverse and longitudinal arrays respectively; and quadrilateral unit mechanisms are connected through shared scissors components and angular point hinge components. When completely developed, the whole mechanism is stabilized in a developable state under the actions of locking springs and locking pins, and after the whole mechanism is completely developed, the whole mechanism is automatically locked and is supported by rod units in diagonal directions, the rigidity of the system is improved, and the shock response is not sensitive. The whole system only has a degree of freedom and is easy to drive, an auxiliary system is not required to compensate friction force in the mechanism, and the mechanism is simple in structure, light in weight, high in developing precision, stable in developing process and high in synchronism; and moreover, the number of unit mechanisms can be optionally increased or reduced according to needs under the conditions that the structures and dimensions of various parts are not changed, and the parts can be repeatedly used.

Description

technical field [0001] The invention relates to a planar unit mechanism with a large contraction ratio, in particular to a scissors-based quadrilateral unit planar array expandable mechanism, which belongs to the technical field of structural design. Background technique [0002] The contraction ratio and stiffness of the deployment mechanism of the spaceborne antenna system are important indicators to judge the performance of the deployment mechanism of various spaceborne antenna systems. The deployment mechanism currently used in the spaceborne antenna system is mainly composed of multiple retractable basic unit mechanisms combined in a certain way to realize the function of synchronous retraction and deployment. A common deployable mechanism uses a parallelogram mechanism as a unit mechanism to form an annular array. The connecting rods of the unit mechanism are hinged, and the ropes are connected in series to drive each unit to unfold. Although this type of expandable ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/08
Inventor 王三民刘国林陈苏孙宏图王琳杰高妍贾驰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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