The invention relates to a cage type foldable multi-rotor heavy-duty large unmanned aerial vehicle, and belongs to the technical field of
aviation. The cage type foldable multi-rotor heavy-duty largeunmanned aerial vehicle includes a cage
airframe, a flight control device, a lift device and an
attitude control device, four folding frames are unfolded, and a front left movable arm, a front right movable arm, a rear left movable arm and a rear right movable arm are unfolded; an engine is started, the engine drives left and right rotating shafts to rotate through a synchronous belt, and the leftrotating shaft and the right rotating shaft drive a large left
propeller and a large right
propeller to rotate crosswise; by increasing the rotating speed of the engine, the large left
propeller andthe large right propeller speed up to produce larger lift, the unmanned aerial vehicle takes off vertically, and the flying attitude of the unmanned aerial vehicle is adjusted by adjusting the
attitude control device; and during landing, the rotating speed of the engine is lowered, the unmanned aerial vehicle slowly lands vertically, and balance of the unmanned aerial vehicle is adjusted by adjusting the
attitude control device. According to the cage type foldable multi-rotor heavy-duty large unmanned aerial vehicle, the
airframe is made of an aluminum
alloy or a
titanium alloy by
welding, andcan be folded to facilitate parking and transportation of the unmanned aerial vehicle; and the lift is large, stability is good, and the cage type foldable multi-rotor heavy-duty large unmanned aerial vehicle is suitable for lifting and hanging operation.