Compression and release device based on memory alloy

Abstract

The invention relates to the technical field of spaceflight launching satellites, and concretely relates to a compression and release device based on memory alloy. The device comprises a shell, a sliding block, a driving block, a split nut, a driving spring cover, a driving spring, a connecting rod mechanism, a small ball control mechanism and a driving mechanism, wherein the sliding block is arranged in the shell, the driving spring and the driving spring cover are arranged in the containing cavity of the sliding block from bottom to top, the split nut is in threaded connection with the driving spring cover, the split nut is connected with the sliding block through the connecting rod mechanism, and the connecting rod mechanism pulls the split nut when the sliding block moves downwards, so that locking of the driving spring cover is relieved; the driving mechanism, the driving block and the small ball control mechanism are arranged at the bottom of the shell from bottom to top, and the small ball control mechanism is arranged on the outer side of the lower end of the sliding block and used for limiting axial movement of the sliding block; and the driving mechanism is used for driving the driving block to rotate to a preset position. According to the invention, the task requirement of unfolding the satellite antenna is met, and the reliability and safety of compressing and releasing the satellite antenna are improved.

Description

technical field [0001] The invention relates to the technical field of space launch satellites, in particular to a compression release device based on a memory alloy. Background technique [0002] Countries around the world are paying more and more attention to the launch of space satellites in order to develop space resources, and it is particularly important to study compression and release devices that meet contemporary space missions. In order to reduce the size of the satellite during launch, the antenna of the satellite needs to be compressed by the compression release device before launch to ensure that the unfolded load of the antenna is not affected by the launch load during launch; when the satellite enters the predetermined orbit, it is necessary to Send commands to control the compression and release device, release the satellite antenna to expand the load, and expand the antenna. [0003] At present, the compression and release device of pyrotechnic separation ...

AI Technical Summary

Problems solved by technology

This traditional pyrotechnic device will generate a large impact, electromagnetic and static electricity when it is separated, which will have a greater impact on the precision instruments on the carrier and satellite; There are also high potential safety hazards; the debris produced by traditional pyrotechnic devices during the explosion is difficult to clean up and will become space junk

With the development of various micro-satellites, the requirements for satellite accessories are getting higher and higher, and it is difficult for traditional pyrotechnic devices to meet the relevant requirements.

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