Retractable folding quad rotor

Abstract

The invention relates to a retractable folding quad rotor which comprises a central supporting mechanism and four sets of propeller mechanisms. The improvement of the retractable folding quad rotor is as follows: the four sets of propeller mechanisms are four sets of retractable propeller mechanisms with identical structures; each set of retractable propeller mechanism comprises a bevel pinion, a telescopic rod, a propeller, a motor and a lifting arm mechanism, and also comprises a large conical gear and a servo motor; the servo motor, the large conical gear and the four bevel pinions form driving mechanisms of telescopic rods of the four sets of propeller mechanisms; and under the drive of the servo motor, the four bevel pinions respectively and simultaneously drive the four telescopic rods to realize outward retraction or inward retraction by virtue of screw drive of the screw rods. According to the improvement, four sets of folding mechanisms are arranged, wherein each set of folding mechanism drives each set of telescopic propeller mechanism to fold or unfold. According to the quad rotor, the telescopic mechanisms and the folding mechanisms are additionally arranged, so that the four-rotor body is greatly retracted; and compared with the conventional product, the retractable folding quad rotor disclosed by the invention has the advantages that the size of the quad rotor is effectively reduced, and the quad rotor is convenient to carry.

Description

technical field [0001] The invention belongs to the technical field of multi-rotor aircraft, and in particular relates to a four-axis aircraft. Background technique [0002] Multi-rotor aircraft can be used for ground reconnaissance, no-fly zone patrol and close support in the military, and post-disaster search and rescue, aerial photography of events, traffic patrol, etc. in civilian use. Existing quadcopter fuselages are mainly monolithic, and most of them are formed by molds without design separation surfaces (DJI Elf); a few large quadcopter fuselages are made of upper and lower wall panels, carbon fiber tubes glued, and screwed , the machine arm is pinned between the upper and lower wall panel interlayers, and can rotate around the pin shaft between the interlayers. The machine arm has the function of plane folding (flying over 650). The former fuselage paddle plate and the arm have high connection strength and small assembly stress, but the fuselage is poor in detacha...

AI Technical Summary

Problems solved by technology

The former fuselage paddle plate and the arm have high connection strength and small assembly stress, but the fuselage is poor in detachability, the fuselage cannot be retracted, and the arm cannot be retracted when flying in the air, which limits the ability of the quadcopter to deal with complex terrain At the same time, it cannot meet the needs of scouts such as retractable and portable, fast take-off

The latter type of foldable fuselage is flat folded. If the arm telescopic function is added, the telescopic and folding will interfere. This folding method limits the potential of both telescopic and telescopic arms, and cannot further develop the activity space of the quadcopter.

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