Reciprocating telescopic unfolding mechanism

Abstract

The invention discloses a reciprocating telescopic unfolding mechanism. The reciprocating telescopic unfolding mechanism comprises a driving motor, a transmission lead screw, N nuts, N stages of telescopic arms, a plurality of unfolding locking mechanisms, a plurality of folding locking mechanisms and a plurality of rolling bearings, wherein, the driving motor is connected with one end of the transmission lead screw through a rotating shaft, the nuts are installed at the ends, close to the motor, of the telescopic arms; the telescopic arms are connected with one another through the rolling bearings; and the unfolding locking mechanisms are arranged on the outer walls, away from the end part of the motor end, of the second-stage to (N-1)-stage telescopic arms, and the folding locking mechanisms are arranged on the inner walls, away from the end part of the motor end, of the second-stage to (N-1)-stage telescopic arms. The mechanism is unique and controllable in motion trail, reliable in locking, controllable in step-by-step stretching and unfolding, and automatic and repeatable in stretching and unfolding processes; through motor driving, the defect that passive driving unfolding impact is large is effectively avoided, the unfolding rigidity and strength can be subjected to adaptive optimization design according to requirements, and the storage ratio is high; and the mechanism can be widely applied to large-scale and even ultra-large-scale deployable structures in space, and has a wide application prospect.

Description

technical field [0001] The invention relates to a reciprocating telescopic expansion mechanism, which belongs to the technical field of large-scale expandable structures in space. Background technique [0002] With the rapid development of space earth observation technology and a new round of aerospace industry, the demand for large and even super large payloads is becoming more and more urgent. smaller. In order to meet the requirements of small folded size and large unfolded size, it is necessary to vigorously develop ultra-high storage ratio mechanisms. The reciprocating telescopic deployment mechanism involved in the present invention can meet the requirements of large or even super large space structures. With the development of rocket recovery technology, this technology can be used for reference with the recovery of other payloads, as well as the maintenance requirements of the space environment. The forward-looking design of this mechanism can meet the requirements...

AI Technical Summary

Problems solved by technology

At present, there is no precedent for the application of large-scale structures that can be deployed in space, and there is no precedent for the application of structures that are automatically unlocked in orbit and gradually folded in stages. At the same time, there is a contradiction between the deployment span and stiffness.

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