A new type of high-precision locking device in place

Abstract

A novel high-precision in-position locking device relates to the technical field of a space-expandable mechanism, including a chute, a limiting plate, a second roller, a supporting plate, a stop pin, a cover plate, and a locking connection block. The chute is the base of all parts, and provides the sliding track of the pallet and the stop pin, and the two tracks are orthogonal; the horizontal direction is the sliding track of the pallet, and the vertical direction is the sliding track of the stop pin. The limit plate is installed on the supporting plate, and blocks the second roller when the locking device is not triggered, and the limit plate slides on the second roller after triggering; the present invention adopts the linkage scheme of two sets of spring drive components, which is applied in the space On the high-precision expandable mechanism, the state is solidified after the mechanism is deployed in place, the repeated deployment accuracy is improved to no more than 0.01°, and the self-adaptive locking is realized, the matching gap between the two is eliminated, and the repeated deployment accuracy is improved. .

Description

technical field [0001] The invention relates to the technical field of space expandable mechanisms, in particular to a novel high-precision locking device in place. Background technique [0002] The present invention originates from the development of the deployment mechanism of the high-precision radial rib umbrella-shaped deployable antenna. In order to meet the envelope requirements during satellite launch, the large-diameter antenna should have the characteristics of high storage ratio, and the antenna should be locked and stored in the satellite during satellite launch. On the platform, after being in orbit, it will be deployed into a working state, such as figure 1 As shown, the rib deployment mechanism is used to drive the main reflector of the antenna to expand from the retracted state to the working state. [0003] The high-precision radial rib umbrella-shaped deployable antenna works in the Ka frequency band, and the on-orbit profile accuracy of the antenna is req...

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Problems solved by technology

[0004] According to the information, Russia's "Ray No. 5" umbrella antenna has the function of locking in place, and its mechanism adopts the principle of self-locking of the connecting rod, which does not have the function of self-adaptive locking, and there is still a small gap after locking. It meets the profile requirements of the Ka-band umbrella antenna; the umbrella antenna developed by the United States and applied to the relay satellite TDRS also has the function of locking in place, but there is no relevant literature report on the specific structure of the locking mechanism

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