Non-contact separation type unmanned aerial vehicle propeller locking device and locking method

Abstract

The invention provides a non-contact separation type unmanned aerial vehicle propeller locking device and a locking method. The locking device comprises a propeller, a locking frame, a motor mechanismand permanent magnet groups, wherein the permanent magnet groups comprise a first permanent magnet group, a second permanent magnet group and a third permanent magnet group; the first permanent magnet group is mounted at the root part of the propeller; the second permanent magnet group and the third permanent magnet group are mounted on a locking disk of the locking frame; a polarity arrangementmode of the second permanent magnet group is the same as that of the first permanent magnet group; the polarity arrangement mode of the third permanent magnet group is opposite to that of the first permanent magnet group. The non-contact separation type unmanned aerial vehicle propeller locking device provided by the invention has the advantages of simple structure and light weight; meanwhile, thepropeller is locked by adopting a non-contact mode, so that mechanical wear is avoided; the locking device has the advantages of large locking torque, short locking time, zero additional power loss,low fault rate, convenience in removal and maintenance and the like.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicles, and in particular relates to a non-contact and separate arrangement of an unmanned aerial vehicle propeller locking device and a locking method. Background technique [0002] Lift-thrust separation (separate lift thrust) UAVs have vertical take-off and landing capabilities, and take into account both low-speed hovering capabilities and high-speed cruising performance. This type of UAV has been widely used, and its fields include aerial photography, line inspection, high-altitude environmental monitoring, etc. In order to have hovering and high-speed cruising capabilities at the same time, this type of UAV is equipped with two sets of power devices that cannot change the installation angle with the body, such as the Chinese appearance patent, publication number CN303737778S. Among them, the vertical power device installed on the wing is used to drive the propeller to rotate at lo...

AI Technical Summary

Problems solved by technology

Contact locking is often implemented with an eccentric spring pin, the disadvantage of this method is that it will generate mechanical friction, which will reduce the life of the locking mechanism

Non-contact locking solutions often use electromagnetic methods, that is, to change the magnitude of the electromagnetic force by controlling the current. The disadvantage of this method is that it will greatly increase the structural weight of the drone.

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