Unlocking device for releasing load of micro-nano satellite

Abstract

The invention discloses an unlocking device for releasing a micro-nano satellite load, which comprises a memory alloy electric pin puller, a memory alloy pull pin, a connecting rod, a bracket and a master pin assembly, the memory alloy electric pin puller and the bracket are respectively fixed on an unlocking device bottom plate, and the memory alloy pull pin comprises a first boss, a connecting plate and a pull pin; a first boss is fixed to the center of the top face of the connecting plate to achieve rotating connection with one end of the connecting rod, a pull pin and an actuating pin used for being matched with the memory alloy electric pin puller are fixedly connected to the center of the bottom face of the connecting plate, and when the memory alloy electric pin puller is locked, the first boss is fixedly connected with the top face of a pressing base of the memory alloy electric pin puller. The other end of the connecting rod is rotationally connected with the support, the master pin assembly is located below the connecting rod and rotationally connected with the connecting rod, and when the memory alloy electric pin puller is unlocked, the memory alloy pull pin bounces upwards to drive the connecting rod and the master pin assembly to move upwards, and the internal load of a satellite is unlocked.

Description

technical field [0001] The invention relates to a micro-nano satellite unlocking and separation technology, in particular to an unlocking device for releasing a micro-nano satellite load. Background technique [0002] With the development of micro-nano technology, integrated multi-functional structure, additive manufacturing technology, integrated integrated electronic system and other technologies and their application in small satellites, the performance of small satellites has been further improved. For the micro-nano satellite that needs to be separated from the parent star, the unlocking and separation device required for the separation process often needs to be customized. However, the particularity of the aerospace field puts forward extremely high requirements on the reliability of the mechanical structure of the separation and unlocking device. [0003] The current micro-nano satellite unlocking and separation schemes can be divided into pyrotechnic unlocking schem...

AI Technical Summary

Problems solved by technology

The pyrotechnic unlocking scheme usually uses a high-temperature device fuse unlocker, which requires a large amount of energy and requires very high reliability of the device, and cannot be reused, and the cost of ground experiments is extremely high

Non-pyrotechnic solutions often use electromagnetic unlocking devices, which can be reused, but will cause excessive residual magnetism in the entire satellite and affect the normal operation of the satellite.

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