Space flexible arm pressing releasing mechanism for wire fuse unlocking

A technology of releasing mechanism and flexible arm, which is used in space navigation equipment, tools, transportation and packaging, etc., can solve the problems of limited strength and rigidity, damage and other problems, and achieve the effect of simple structure, accurate preload, and reliable compression.

Active Publication Date: 2018-09-28
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its thin and long configuration, its strength and rigidity are limited. If it is not reliably pressed during launch, it will inevitably be damaged under the strong vibration and impact of the launch vehicle.

Method used

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  • Space flexible arm pressing releasing mechanism for wire fuse unlocking
  • Space flexible arm pressing releasing mechanism for wire fuse unlocking
  • Space flexible arm pressing releasing mechanism for wire fuse unlocking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The fixed base 1 is connected to the satellite cabin board by screws, the cutter 2, the position detection micro switch 6, the limit micro switch 10, and the phenyl silicone rubber sheet 7 are connected to the fixed base 1 by screws, and the flexible arm 11 Place it in the cylindrical groove of the fixed base 1. One end of the compression cover plate 5 is connected to the fixed base 1 through a pin shaft 9, and a torsion spring 8 is installed in the middle of the pin shaft 9 to apply a torsional moment to the compression cover plate 5; The other end of cover plate 5 is equipped with stay cord 3 on it. The compression cover plate 5 is provided with a cylindrical groove, which adapts to the shape of the flexible arm, increases the contact area for compression, and makes the compression more reliable.

[0030] Before launching, the flexible arm 11 is placed in the cylindrical groove of the fixed base 1, and the position detection microswitch 6 can detect that the flexible...

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PUM

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Abstract

The invention provides a space flexible arm pressing releasing mechanism for wire fuse unlocking, and belongs to the technical field of the space flexible arm pressing releasing mechanism. The space flexible arm pressing releasing mechanism comprises a fixed base, a wire fuse unlocking device, a pressing cover plate, a position detecting micro switch, phenyl silicone rubber sheets, torsion springs, hinge pins and limiting micro switches. Before launching, locking machines of the wire fuse unlocking device is adjusted, and proper pre-tightening force is applied to the pressing cover plate through stays to press a space flexible arm against the fixed base. After orbit injection, a command is sent from the ground, a cutter of the wire fuse unlocking device is energized, and a resistance wireof the cutter is rapidly heated to melt the stays. The space flexible arm pressing releasing mechanism for wire fuse unlocking is reliable in pressing and adopts the wire fuse unlocking device as a pressing and unlocking tool, the structure is simple, the relatively accurate pre-tightening force can be applied, and the assembly and adjustment are convenient; and no impact or vibration is generatedwhen unlocking, the space flexible arm can be protected from being damaged by the vibration shock load during launching, and the space flexible arm pressing releasing mechanism for wire fuse unlocking is suitable for the occasion in which the locking force of the space flexible arm is not required too much.

Description

technical field [0001] The invention relates to a space flexible arm pressing and releasing mechanism for fuse unlocking, and belongs to the technical field of space flexible arm pressing and releasing mechanisms. Background technique [0002] The world launches an average of 80-130 satellites per year, but 2-3 satellites fail to enter orbit correctly, and 5-10 satellites correctly enter orbit, and 5-10 fail at the beginning of their life (the first 30 days after entering orbit) , which resulted in huge economic losses. For example, after my country's Xinnuo-2 satellite was launched on October 29, 2006, although the satellite's orbit was successfully determined, and the satellite's measurement and control, attitude and orbit control subsystems were in good condition, however, due to the solar sail The second deployment of the board and the deployment of the antenna were not completed, and the satellite could not work normally. This satellite, which cost 2 billion yuan and ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G4/00
CPCB64G4/00
Inventor 刘宇张彦连文康梁斌王学谦
Owner HARBIN INST OF TECH
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