Unmanned aerial vehicle

Abstract

The invention relates to an unmanned aerial vehicle comprising a spraying device; the spraying device comprises a spraying disc, a driving device, a shell piece, and a seal ring; the spraying disc isused for spraying liquid; the driving device comprises a driving piece used for providing power to the spraying disc and a driving shaft driven by the driving piece to rotate, and the driving shaft isfixedly connected with the spraying disc; the shell piece comprises a main shell used for fixedly installing and containing the driving piece and a secondary shell extending along the main shell to the spraying disc, the main shell is provided with a containing cavity used for containing the driving piece, and the secondary shell is provided with a conducting hole communicating with the containing cavity and the conducting hole is used for the driving shaft to insert; the seal ring comprises a waterproof baffle ring, and the waterproof baffle ring is provided with a through hole penetrating through the waterproof baffle ring and a through hole used for the driving shaft to insert; the inner wall of the through hole is a hook face; the driving shaft passes through the through hole; and theinner wall of the through hole attaches with the outer surface of the driving shaft, and the outer wall of the waterproof baffle ring abuts against the hole wall of the through hole.

Description

technical field [0001] The invention relates to an unmanned aerial vehicle with a spraying device. Background technique [0002] In recent years, with the development of multi-rotor aircraft, its application in many fields, especially in the field of agricultural plant protection, has been aroused due to its advantages of flexible maneuverability, fast response, unmanned flight, and low operation requirements. The spraying device on a multi-rotor aircraft is one of the important parts that affect its operating efficiency. [0003] In the related art, there is a sealing problem between the drive shaft of the spraying device and the installation shell, and the liquid can easily enter the interior of the installation shell, resulting in short circuit and corrosion of the driving parts in the spraying device, which greatly reduces the reliability of the spraying device and service life. Conventional seal rings are not enough to play a role of complete sealing, such as O-ring s...

AI Technical Summary

Problems solved by technology

[0003] In the related art, there is a sealing problem between the drive shaft of the spraying device and the installation shell, and the liquid can easily enter the interior of the installation shell, resulting in short circuit and corrosion of the driving parts in the spraying device, which greatly reduces the reliability of the spraying device and service life

Conventional sealing rings are not enough to play a complete sealing role, such as O-rings, and will also affect the rotational efficiency of rotating parts (such as drive shafts)

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