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Automatic adsorption locking connection mechanism for space truss connection

A technology of space truss and connecting mechanism, applied in the direction of building structure, construction, etc., can solve the problems of difficult alignment of screw holes, influence of parts and components, complicated process, etc., and achieve the effect of firm and reliable locking.

Active Publication Date: 2018-02-09
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Screw fixing is a traditional fixed connection method, but it needs to cooperate with screws and nuts, and install and fix by rotating. The problem in operation is that in addition to the connected parts, there are additional accessories screws and nuts. Even if the nuts are fastened on the connectors in advance, screws are required to complete the fixation
And even if it is manual operation, there is still the problem that the screw holes are difficult to align, not to mention the operation by the mechanical arm. Not only that, but the tightening degree of the screws is also difficult to evaluate
[0009] Compared with the screw connection method, the welding connection method has higher connection strength, but the process is very complicated
In the harsh space environment, the welding process is difficult to carry out, and the welding process will generate high temperature, which will have a serious impact on the working parts, and the heating of the structural components will also change their strength
[0010] Riveting is similar to screwing, and additional parts need to be added, but it is a one-time connection. If the rivet is removed after being equipped, it will be invalid and cannot be reused

Method used

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  • Automatic adsorption locking connection mechanism for space truss connection
  • Automatic adsorption locking connection mechanism for space truss connection
  • Automatic adsorption locking connection mechanism for space truss connection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] Use the "future 8000-photosensitive resin" material to print the model, with an accuracy of 0.01mm, and install magnets and rods to make a simple assembly. After physical assembly, it was found that:

[0048] 1. The rounded corners of the "petal"-shaped protrusion 12 and the groove 22 are too small, and can only slide in automatically within a small range. If the "petal" protrusion does not correspond to the groove at all, it cannot be connected by itself;

[0049] 2. At the beginning of the design, in order to ensure that the parts can be automatically rotated and locked, and to prevent friction from being completely released from the contact surfaces, a 1mm gap is set between the contact surfaces.

[0050] After the physical connection, it was found that the 1mm gap could not allow the parts to rotate automatically, but instead made the butt joint loose and the connection became unreliable.

[0051] 3. There is no rotation locking design. After the two frames are con...

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PUM

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Abstract

The invention relates to an automatic adsorption locking connection mechanism for space truss connection. The automatic adsorption locking connection mechanism comprises a joint piece and a groove piece which are in fit connection with each other, a connecting head at the end part of the joint piece is provided with a petal-shaped protrusion, and the groove piece is of a cylindrical structure; a connecting groove is formed in the groove piece, and a groove in the connecting groove is matched with the protrusion; and magnetic poles used for automatic adsorption are arranged on the position, opposite to the connecting groove, of the connecting head, and magnetic poles used for adsorption and rotating to lock the mechanism are arranged on the connecting head and the side wall of the connecting groove. The automatic adsorption locking connection mechanism is a connecting device which can realize automatic adsorption connection and self locking in a certain range, the structure is reliablyconnected and firmly locked, and the automatic adsorption locking connection mechanism can be reused.

Description

technical field [0001] The invention relates to the technical field of space operation and space truss construction, in particular to an automatic adsorption locking connection mechanism for space truss connection. Background technique [0002] With the rapid development of space technology, the role of space systems in human daily life has become more and more prominent. The current research situation of space technology has gradually expanded from exploring and utilizing space to exploring, utilizing and controlling space. With the continuous improvement of human beings' capabilities in space research, development and application, space experiments have also put forward higher and higher requirements for test conditions, and many tasks require astronauts to operate out of the warehouse. However, the space environment of the universe is complex, whether it is a vacuum environment, cosmic radiation, or fast-moving space debris, they are all very dangerous. The present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/19
CPCE04B1/1903E04B1/1912E04B2001/1921
Inventor 卫宣伯马卫华王明明闫宇申徐晨吴珂罗建军袁建平
Owner NORTHWESTERN POLYTECHNICAL UNIV
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