Large-force-reduction-ratio low-impact releasing mechanism for linear low-impact separation device

Abstract

The invention discloses a large-force-reduction-ratio low-impact releasing mechanism for a linear low-impact separation device. The large-force-reduction-ratio low-impact releasing mechanism comprises a base 17, an upper cover 4, a connecting and separating assembly, a locking and unlocking assembly, an electromagnetic driving assembly and a pawl assembly. The mechanism has three working states, namely a connecting and locking state, an unlocking and separating state and a resetting state; (1) in the connecting and locking state, the connecting and separating assembly reduces the elastic pre-tightening force and then transmits the elastic pre-tightening force to the locking and unlocking assembly, and the locking and unlocking assembly further reduces the reduced elastic pre-tightening force and then transmits the reduced elastic pre-tightening force to the electromagnetic driving assembly; and the further reduced elastic pre-tightening force is maintained by the electromagnetic driving assembly, so that a bag belt is locked; (2) in the unlocking and separating state, the locking and unlocking assembly rotates to release lock of the connecting and separating assembly, so that the elastic pre-tightening force of the bag belt is released; and (3) after unlocking and separation are completed, the mechanism is restored to the connecting and locking state.

Description

technical field [0001] The invention relates to a low-impact release mechanism with a large force reduction ratio for a line-type low-impact separation device, which belongs to the technical field of low-impact line-type separation devices for rockets, satellites or spacecraft. Background technique [0002] At present, the spacecraft star-rocket separation system is mainly unlocked and released by the explosion of pyrotechnics. Typical star-rocket separation structures include belt-type separation structures and point-type separation structures. Most of the explosion energy of the point separation structure is transmitted to the spacecraft structures on both sides, and the high-frequency and high-amplitude stress waves may cause fatal damage to the spacecraft payload. However, in the separation process of the tape separation structure, because the tape falls off, the energy dissipation is relatively large, and the remaining energy is small, so the impact on the spacecraft is...

AI Technical Summary

Problems solved by technology

However, traditional pyrotechnic products also have shortcomings such as large impact, obvious additional pollution, non-repeatability, non-test

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