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A space-expandable support arm mechanism

A support arm and space technology, which is applied to the field of space deployable support arm mechanisms, can solve the problems such as the inability to realize space detection tasks, the failure of support arm mechanism deployment, and the reduction of structural reliability, so as to achieve reduced energy consumption, strong adaptability, and lightening The effect of weight

Active Publication Date: 2016-06-22
AECC SHENYANG ENGINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many support arm mechanisms use motors as power sources, relying on the torque output by the motors to drive the entire mechanism to unfold. Although the motor drive can effectively control the unfolding speed and reduce the impact and vibration during the mechanism's unfolding process, the complex drive mechanism not only increases the structure. The weight also reduces the reliability of the structure, and it is easy to cause the failure of the support arm mechanism to expand, resulting in the failure of the space exploration mission, resulting in huge economic losses

Method used

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  • A space-expandable support arm mechanism
  • A space-expandable support arm mechanism
  • A space-expandable support arm mechanism

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] combine Figure 1 to Figure 2 Describing this embodiment, the space deployable support arm mechanism of this embodiment is composed of several deployable support modules 3 with the same structure stacked in series, and each module 3 is composed of four deployable basic units 4 with the same structure. The basic unit 4 is composed of a center rod 5, an upper chord rod 6, an upper oblique web rod 7, a vertical rod 8, a lower chord rod 9, a lower oblique web rod 10, a torsion spring 11, a spring 12, a lock post 13, etc.; the central rod 5 are respectively hinged with one end of the upper chord 6, the lower oblique web rod 10 and the lower chord 9; the other end of the upper chord 6 is hinged with the vertical rod 8; the other two hinge points of the vertical rod 8 are respectively connected with the upper oblique abdomen. The rod 7 is connected with the lower chord rod 9; the upper inclined web rod 7 and the lower inclined web rod 10 are connected by sliding; the torsion s...

Embodiment 2

[0023] combine Figure 3 to Figure 4 Illustrating this embodiment, the module 3 of the space deployable support arm mechanism of this embodiment is composed of four deployable basic units 4 with the same structure. The four basic units 4 take the central rod 5 as the center of rotation and are evenly distributed in the circumference. When the module 3 is in the folded state, the torsion spring 11 located at the center rod 5 and the lower inclined web rod 10 in each basic unit 4 is compressed and stores a certain elastic potential energy. When the module 3 is unfolded, the torsion spring 11 releases the elastic potential energy, Each base unit 4 is then unfolded, so that the module 3 is fully unfolded.

Embodiment 3

[0025] combine Figure 5 to Figure 6 Describing this embodiment, the basic unit 4 of the space deployable support arm mechanism of this embodiment consists of a central rod 5, an upper chord 6, an upper inclined web rod 7, a vertical rod 8, a lower chord 9, a lower inclined web rod 10, and a torsion spring 11. The spring 12, the lock post 13, etc. are composed, the central rod 5 is hinged with one end of the upper chord 6, the lower oblique web rod 10 and the lower chord 9 respectively; the other end of the upper chord 6 is hinged with the vertical rod 8; The other two hinge points of the vertical rod 8 are respectively connected with the upper inclined web rod 7 and the lower chord rod 9; the upper inclined web rod 7 and the lower inclined web rod 10 are connected by sliding; the torsion spring 11 is installed on the central rod 5 is at the hinge point of the lower oblique web bar 10, and overlaps with the central bar 5 and the lower oblique web bar 10. The torsion spring 11...

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Abstract

A space-expandable support arm mechanism, which consists of several expandable support modules with the same structure stacked in series; each module is composed of four expandable basic units with the same structure, and the basic units are composed of a central rod, an upper chord, an upper Composed of diagonal rods, vertical rods, lower chords, lower diagonal rods, torsion springs, springs and lock columns; the central rod is respectively hinged with one end of the upper chord, lower diagonal rods and lower chords; the other end of the upper chord is connected with the vertical rod Hinged; the other two hinge points of the vertical rod are respectively connected with the upper diagonal rod and the lower chord rod; the upper diagonal rod and the lower diagonal rod are connected by sliding; the torsion spring is installed at the hinge point of the central rod and the lower diagonal rod , and overlap with the central rod and the lower diagonal rod. The invention has the advantages of reducing energy consumption, lightening the weight of the structure, stable and reliable operation; wide application range and strong adaptability; not only suitable for satellite antennas, but also applicable to building temporary bridges for ground rescue and deformable educational children's toys .

Description

technical field [0001] The invention relates to a mechanism for aerospace, in particular to a space-expandable support arm mechanism. Background technique [0002] The satellite antenna is a necessary physical platform for human beings to carry out scientific activities such as deep space exploration, mobile communication and radio astronomy. After the satellite enters the orbit, the satellite antenna is slowly unfolded under the command of the control system and maintains a certain distance from the satellite body with the help of the support arm. To prevent signal interference and coupling vibration between the satellite antenna and the satellite body, but the high launch cost of the rocket determines that the space of the rocket load compartment is very limited and precious. The size of the support arm is usually very large, and its length can reach tens of meters or even Hundreds of meters, which requires the support arm to have certain folding and unfolding or one-way u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/22B64G1/66F16H21/46
Inventor 田大可
Owner AECC SHENYANG ENGINE RES INST