Large foldable multi-rotor unmanned aerial vehicle mechanism

The invention discloses a large foldable multi-rotor unmanned aerial vehicle mechanism which structurally comprises regular hexagonal frames, a rectangular frame and shear forks connected with the regular hexagonal frames, and the unmanned aerial vehicle mechanism is mainly formed by hinging the frames. And each designed frame adopts a hollow design, so that the weight can be reduced as much as possible on the premise of ensuring the performance. The length of the long side of the rectangular frame influences the folding and unfolding rate and the mechanism size, and a rotor wing and a brushless motor are arranged in the vertex regular hexagon frame. The structure is high in volume utilization rate and light in weight; during folding, the rotor wings are folded towards the center, only revolute pairs exist, jamming is not prone to occurring, the folding and stretching movement process is stable, and folding and stretching can be completed in the air; a one-circle structure can be expanded into a two-circle st