Folding and unfolding rotating shaft device based on knuckle bearings

Abstract

The invention discloses a folding and unfolding rotating shaft device based on knuckle bearings. The folding and unfolding rotating shaft device comprises rotating shafts and the knuckle bearings, wherein first ends of the rotating shafts are fixedly connected to a vehicle body; the knuckle bearings comprises knuckle bearing inner rings and knuckle bearing outer rings, the knuckle bearing inner rings are arranged on the outer walls of second ends of the rotating shafts in a sleeving mode, and the knuckle bearing outer rings are connected with missile wings; and when the missile wings are unfolded and folded, the missile wings rotate around the rotating shafts through the knuckle bearings, and part of aerodynamic loads borne by the missile wings need to be transmitted to the rotating shafts by passing through the knuckle bearings firstly. The knuckle bearings have the characteristic that the outer rings can incline and slide relative to the inner rings, and the load transmitted by the missile wings can be transferred and dispersed to other wing body connecting structures, so that the load is prevented from being transferred to the rotating shafts, and the problems that mechanisms are stuck and the missile wings cannot be smoothly unfolded and folded due to deformation of the rotating shafts are solved; and the folding and unfolding rotating shaft device based on the knuckle bearings is simple and light in structure, small in size, high in universality, low in cost, high in reliability, capable of being applied to folding and unfolding of wing surfaces of various flight vehicles such as missiles and unmanned aerial vehicles and wide in application range.

Description

technical field [0001] The invention relates to the technical field of elastic wing folding and unfolding mechanisms, in particular to a joint bearing-based folding and unfolding rotating shaft device. Background technique [0002] Foldable missile wings are widely used in national defense because of their advantages of reducing the size of missiles and launching devices and improving missile combat capabilities. As an important part of the wing-to-body connection structure and the folding and unfolding mechanism of the wing, the wing root shaft must meet the requirement that the wing can rotate flexibly around it while transmitting the load of the wing. For the thin airfoil wing with high wing load, the force bearing surface of the wing root shaft is small due to the limitation of the layout space and the thickness of the airfoil. Flexible rotation around the axis, the wings cannot be unfolded and folded smoothly. [0003] Therefore, it is necessary to develop a folding a...

AI Technical Summary

Problems solved by technology

For the thin airfoil wing with high wing load, the force bearing surface of the wing root shaft is small due to the limitation of the layout space and the thickness of the airfoil. Flexible rotation around the axis, the wings cannot be unfolded and folded smoothly

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