Two-stage spiral repeatable folding and unfolding locking mechanism of solar wing

Abstract

The invention discloses a two-stage spiral repeatable folding and unfolding locking mechanism of a solar wing. A two-stage spiral pair is utilized to transmit the rotation input by a power source so as to drive the left base plate and the right base plate of the solar wing to rotate, thereby realizing repeatable folding and unfolding of the solar wing. The self-locking function of the first-stage spiral pair is utilized to realize the locking of the final folding and unfolding positions of the solar wing, a ball locking position pin ensures the redundant and reliable position of the final folding and unfolding positions. The invention effectively utilizes joint space between the solar wing base plates, has compact and symmetrical structure, can realize high accuracy and high reliability movement easily, and can be applied to solar wings, space repeatable folding and unfolding mechanisms and ground repeatable unfolding mechanisms.

Description

technical field [0001] The invention relates to a solar wing folding mechanism, in particular to a rigid and semi-rigid foldable solar wing repeated folding and unlocking mechanism for movable connection between joints of solar wing substrates. Background technique [0002] As an important part of the solar wing folding mechanism, the repeated folding and unlocking mechanism is essential for the solar wing with multiple folding and unfolding functions. At present, the solar wings of most domestic spacecraft are one-time unfolding and locking, and do not have the function of repeated folding and unfolding. That is, they are folded and folded in the fairing during the launch phase. Expand it to a working state. When the spacecraft is maneuvering in orbit, the unfolded solar wing bears the inertial load caused by the ignition of the orbit-changing engine, which may easily cause the deformation or even breakage of the hinge at the root of the solar wing, and the vibration of th...

AI Technical Summary

Problems solved by technology

When the spacecraft is maneuvering in orbit, the unfolded solar wing bears the inertial load caused by the ignition of the orbit-changing engine, which may easily cause the deformation or even breakage of the hinge at the root of the solar wing, and the vibration of the flexible structure of the solar wing, which will affect the attitude of the spacecraft. Disturbances with the orbital motion will bring a series of adverse consequences, the light ones will reduce the orientation accuracy of the spacecraft, and the severe ones will affect the attitude stability of the spacecraft and even the flight safety

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