retractable quadcopter
A four-axis aircraft, telescopic and folding technology, applied in the direction of aircraft, rotorcraft, motor vehicles, etc., can solve the problems of high connection strength, small assembly stress, limit the expansion and contraction of the arm, and achieve stable flight aerial photography and simple mechanical structure , the effect of wide application space
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[0028] see figure 1 , the retractable and foldable four-axis aircraft includes a central support mechanism and four sets of propeller mechanisms. The central support mechanism is composed of upper and lower parallel upper plate 1 and lower plate 3 connected by four support studs 2, see Figure 5 ; Four sets of propeller mechanisms are all arranged on the upper plate 1, and the propellers 33 of the four sets of propeller mechanisms are evenly distributed on the outer periphery of the upper plate 1, and each propeller 33 is correspondingly equipped with a landing arm mechanism, and the landing arm mechanism includes a support arm 43, Roller 41 and roller axle 42.
[0029] see image 3 , the four sets of propeller mechanisms are four sets of retractable propeller mechanisms with the same structure. Every set of retractable propeller mechanism includes small bevel gear 13, telescopic rod, propeller 33, motor 32 and landing arm mechanism. The propeller 33 is installed on the out...
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