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Whole satellite six-dimensional vibration isolation device used for satellite vibration reduction in satellite launching process

A satellite launch and vibration isolation technology, applied in the direction of shock absorber, shock absorber-spring combination, shock absorber, etc., can solve problems such as reducing the success rate of satellites, and achieve the effect of improving the dynamic environment and the working environment.

Active Publication Date: 2014-05-14
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The various vibrations and loads that the satellite is subjected to during the launch process will greatly reduce the success rate of the satellite launch

Method used

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  • Whole satellite six-dimensional vibration isolation device used for satellite vibration reduction in satellite launching process
  • Whole satellite six-dimensional vibration isolation device used for satellite vibration reduction in satellite launching process

Examples

Experimental program
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Effect test

Embodiment 1

[0027] like Figure 1-Figure 2 As shown, the six-dimensional vibration isolation platform of this embodiment is used for satellite vibration reduction during satellite launch, which includes a fixed platform 1 (lower platform), a moving platform 2 (upper platform), and four connecting branch chains.

[0028] Among them, the fixed platform 1 includes three outer rods 101, three inner rods 102 and three sets of cross-bar vibration isolation subsystems 6; the three outer rods 101 are connected end to end to form an equilateral triangle; one end of the three inner rods 102 is respectively connected to the three Vertices, and the other ends are respectively connected to the geometric center of the equilateral triangle;

[0029] The motion platform 2 is circular.

[0030] The four connecting branches include a central branch 3 and three side branches 4 .

[0031] The central branch chain 3 includes a first connecting rod 301, a second connecting rod 302, and a vertical rod vibrati...

Embodiment 2

[0035] The difference between this embodiment and Embodiment 1 is that the motion platform is elliptical.

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Abstract

The invention provides a whole satellite six-dimensional vibration isolation device used for satellite vibration reduction in the satellite launching process. The whole satellite six-dimensional vibration isolation device comprises a moving platform, a fixed platform and four connecting branch chains. Each connecting branch chain comprises a first connecting rod, a second connecting rod and a vertical rod vibration isolation subsystem, and the first connecting rod and the second connecting rod are connected through the vertical rod vibration isolation subsystem; one end of the center branch chain is fixed to the geometric center of the equilateral triangle of the fixed platform through a universal hinge, and the other end of the center branch chain is connected to the geometric center of the moving platform through a ball pair; one ends of the three side branch chains are connected to the three outer rods of the equilateral triangle of the fixed platform through cylindrical pairs respectively, each outer rod is provided with a cross rod vibration isolation subsystem, each cross rod vibration isolation subsystem is formed by connecting a linear cross rod spring and a magneto-rheological damper in parallel, one end of each linear cross rod spring is fixed, and the other end of each linear cross rod spring is connected to the corresponding cylindrical pair; the other ends of the three side branch chains are connected to the moving platform through ball pairs respectively. The whole satellite six-dimensional vibration isolation device can play a role in vibration isolation within a wide frequency band, so that the working environment of equipment installed on a dynamic carrier is improved obviously.

Description

technical field [0001] The invention relates to a whole-satellite six-dimensional vibration isolation device used for satellite vibration reduction during satellite launch. Background technique [0002] During satellite launch, the load on the satellite is the largest along the direction of acceleration. However, due to the wind force, the launching rocket has a bending mode, which will cause a lateral displacement of the satellite. Secondly, the satellite is in the shape of a high cylinder, and its center of gravity is relatively high. If the overturning rigidity of the vibration isolation platform is not high, the satellite may touch the fairing during the shaking process. Generally, the vibration of the carrier is caused by the environment and the rotation of the engine. Therefore, the vibration of the dynamic carrier has a relatively wide frequency band, so that the equipment has both low-frequency large-scale vibration and high-frequency vibration. [0003] In additio...

Claims

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Application Information

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IPC IPC(8): F16F15/02F16F13/06
Inventor 李兵宋振东易腾达
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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