The basic deployable unit based on the Bennett mechanism and the deployable mechanism composed of the unit

A technology of expandable and flat mechanism, applied in the field of satellite antenna structure, can solve the problem of unsatisfactory expansion performance of Bennett mechanism, and achieve the effects of high reliability, large expansion ratio and good expansion performance.

Active Publication Date: 2019-11-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem of unsatisfactory deployment performance of the existing Bennett mechanism, and further provides a basic expandable unit based on the Bennett mechanism and a deployment mechanism composed of the unit

Method used

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  • The basic deployable unit based on the Bennett mechanism and the deployable mechanism composed of the unit
  • The basic deployable unit based on the Bennett mechanism and the deployable mechanism composed of the unit
  • The basic deployable unit based on the Bennett mechanism and the deployable mechanism composed of the unit

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specific Embodiment approach 1

[0032] Specific implementation mode one: combine Figure 1-10 Describe this embodiment, based on the basic expandable unit of the Bennett mechanism, which includes a vertical rod 1, a guide rod 2, a slider 3, the first to the second lower arm, the first to the second upper arm, the first to the second Connect the arm rod, the first to the fourth connecting rod and the first to the sixth rotating pair, the first connecting rod 10 and the second connecting rod 11 are rotatably connected through the first rotating pair 14, the third connecting rod 12 and the fourth connecting rod The rod 13 is rotatably connected through the third rotating pair 16, the second connecting rod 11 and the third connecting rod 12 are rotatably connected through the second rotating pair 15, and the first connecting rod 10 and the fourth connecting rod 13 are connected through the fourth rotating pair 17. Rotatable connection, wherein the central axes of the first rotating pair 14 and the third rotating...

specific Embodiment approach 2

[0042] Specific implementation mode two: combination Figure 1-10 To describe this embodiment, the central axis of the first rotary pair 14 and the central axis of the third rotary pair 16 intersect at one point. In such a design, there is a certain offset between the first connecting rod 10 and the first rotating pair 14, and between the third connecting rod 12 and the third rotating pair 16, so as to obtain better folding Performance configuration (able to achieve perfect folding and unfolding). Other compositions and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0043] Specific implementation mode three: combination Figure 1-10 To describe this embodiment, the central axis of the second rotary pair 15 and the central axis of the fourth rotary pair 17 intersect at one point. In such a design, there is a certain offset between the second connecting rod 11 and the second rotating pair 15, and between the fourth connecting rod 13 and the fourth rotating pair 17, so as to obtain better folding Performance configuration (able to achieve perfect folding and unfolding). Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a basic deployable unit based on a Bennett mechanism and an unfolding mechanism constituted by the basic deployable unit, and belongs to the technical field of satellite antenna structures. The problem that the unfolding performance of an existing Bennett mechanism is poor is solved. A first connecting rod is rotatably connected with a second connecting rod, a third connecting rod is rotatably connected with a fourth connecting rod, the second connecting rod is rotatably connected with the third connecting rod, the first connecting rod is rotatably connected with the fourth connecting rod, the central axis of a first revolute pair and the central axis of a third revolute pair are located on a first plane, the central axis of a second revolute pair and the central axis of a fourth revolute pair are located on a second plane, the first plane is perpendicular to the second plane, a slide block reciprocates in the length direction of a guide rod, the central axis ofthe first revolute pair is perpendicular to the central axis of a fifth revolute pair, the central axis of the third revolute pair is perpendicular to the central axis of a sixth revolute pair, and the basic deployable unit is in an X shape in an unfolded state, is in an umbrella shape in a half-closing state, and is in an I shape in a complete closing state.

Description

technical field [0001] The invention relates to a basic expandable unit based on a Bennett mechanism and an unfolding mechanism composed of the unit, belonging to the technical field of satellite antenna structures. Background technique [0002] With the development of society and science and technology, space technology is increasingly widely used in the fields of satellite communication, satellite navigation, information technology, space physics, astronomical observation, meteorological observation, military reconnaissance, national defense and security. With the development of space technology, the size of space equipment is getting bigger and bigger, and the structure is becoming more and more complex. However, the size of the payload compartment of the launch vehicle is limited, which requires that the space equipment can be folded into a smaller volume during the launch stage. Unfold into a predetermined shape. As the expansion mechanism of these space equipment base...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/10
CPCH01Q1/10
Inventor 郭宏伟宋小科刘海婷邓宗全刘荣强
Owner HARBIN INST OF TECH
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