Anti-collision rotor wing structure for unmanned aerial vehicle

Abstract

The invention relates to an anti-collision rotor wing structure for an unmanned aerial vehicle, and discloses an anti-collision rotor wing structure which can perform hierarchical absorption on noise through a sound absorption plate reducing structure and perform hierarchical buffering and counteracting on impact force through cooperation of a honeycomb buffering layer and an air cushion rotating roller to enhance the anti-collision performance of a rotor wing of the unmanned aerial vehicle. The structure is characterized in that a plurality of sound-absorbing plates are arranged inside a protective shell in the axial direction, the protective shell is annular, the sound-absorbing plates are variable-diameter circular rings, receding grooves are formed in the outer wall of the protective shell, sliding ring sleeves are arranged inside the receding grooves, and honeycomb buffer layers are arranged between the sliding ring sleeves and the protective shell; a plurality of air cushion rotating rollers are arranged in the sliding ring sleeve through connecting shafts and distributed at equal angles, a connecting ring is arranged at the bottom of the protective shell, a plurality of fixing holes are formed in the connecting ring, and a plurality of balance blocks are arranged on the top of the protective shell in the circumferential direction.

Description

technical field [0001] The invention relates to an anti-collision rotor structure for unmanned aerial vehicles, relates to an anti-collision rotor structure that can be used on unmanned aerial vehicles, and belongs to the technical field of unmanned aerial vehicles. In particular, it relates to an anti-collision rotor structure that can absorb noise through the variable-diameter structure of the sound-absorbing board, and at the same time, through the cooperation of the honeycomb buffer layer and the air-cushion roller, the impact force can be buffered and offset in layers to enhance the anti-collision performance of the UAV rotor. . Background technique [0002] At present, in order to reduce the damage caused when the UAV hits a building or a tree, an anti-collision protection frame is usually installed on the outer side of the rotor of the UAV, and the existing anti-collision protection frame is mostly rigidly connected. The effect of elastic buffering is poor, and the d...

AI Technical Summary

Problems solved by technology

[0002] At present, in order to reduce the damage caused when the UAV hits a building or a tree, an anti-collision protection frame is usually installed on the outer side of the rotor of the UAV, and the existing anti-collision protection frame is mostly rigidly connected. The effect of elastic buffering is poor, and the direction of action of elastic buffering is affected by the direction of its connecting rod, so it cannot evenly buffer the forces in all directions when the drone hits, resulting in the reaction resistance generated by the impact. On the man-machine rotor, the stress load on the connection increases, and the rigid connection is easily damaged after long-term use

[0003] The notification number CN109720565A discloses an anti-collision protection device for the wing of a UAV, including a body and a first anti-collision shell, the body is connected to the propeller through the wing, and a clasp is nested outside the wing, and the clasp The rings are connected by bolts and nuts, and the snap ring is connected with the fixed plate through the first compression spring. The inner and outer sides of the first anti-collision shell are respectively provided with sound-absorbing panels and anti-collision pads, and the first anti-collision shell The outer side is connected with a connecting rod, and the connecting rods are connected by a connecting shaft, and a guide wheel is installed on the outer surface of the connecting shaft. The compression spring is connected with the airtight plate, and the anti-collision protection device lacks a buffer structure for the impact force, and the impact force directly acts on the joint of the shell, making the joint easily damaged

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