A new type of high-load and low-impact line connection and separation mechanism for aerospace

Abstract

The invention provides a novel line type connecting and separating mechanism with high bearing and low impact for an aerospace. The novel line type connecting and separating mechanism with the high bearing and the low impact comprises a shell body, an SMA triggering assembly, an unlocking and transmission assembly and a connecting and separating assembly, wherein the SMA triggering assembly is arranged between the connecting and separating assembly and the unlocking and transmission assembly; and the shell body comprises a outer shell and a shell cover, through holes are formed in the front side and the rear side of the shell body correspondingly, a limiting plate is arranged on the inner wall of the shell body, a vertical sliding groove is defined between the limiting plate and the rightside wall of the shell body, and a horizontal sliding groove is defined between the limiting plate and the bottom wall of the shell body. According to the novel line type connecting and separating mechanism with the high bearing and the low impact for the aerospace, the shape memory effect of SMA is used for triggering and acting, and the connecting and separating mechanism with high reliability,large bearing and low impact is provided so as to meet the actual requirement of the aerospace application at the present stage.

Description

technical field [0001] The invention belongs to the field of aerospace technology, and in particular relates to a novel high-load-bearing and low-impact line connection and separation mechanism for aerospace. Background technique [0002] Satellites will experience a complex mechanical environment composed of various transient and steady-state loads including vibration, shock, and noise during launch into orbit. It needs to be reliably connected to the carrier through a locking device to resist harsh mechanics. At the same time, it is necessary to separate the satellite and rocket at an appropriate time to ensure that the satellite enters the predetermined orbit and works normally. The separation between the traditional star-rocket stages is mainly achieved through pyrotechnic actuation. Multiple types of star-rocket separation experiments have shown that huge shocks and explosive pollution are generated during the actuation of the pyrotechnic separation device, which will c...

AI Technical Summary

Problems solved by technology

[0003] The existing unlocking mechanism uses the secondary swing arm driven by SMA wire to unlock the limit of the flywheel nut, but its disadvantages are: the SMA wire driving path used in the design is too long, which prolongs the unlocking reaction time of the device, and at the same time Due to structural limitations, the force boost of the secondary swing arm is relatively small, resulting in a low overall load-carrying capacity of the device

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