The invention discloses an oil drive variable pitch quadrotor type multifunctional fire-fighting unmanned aerial vehicle, relating to the field of unmanned aerial vehicles. The invention mainly aims at solving the problems that a conventional fire fighting truck is large in fire fighting limitations and the like. The unmanned aerial vehicle comprises a cabin, an undercarriage and an airbag, wherein a fuel tank is arranged in a fuel storage bin; engine arms are arranged outside the cabin; the outer ends of the engine arms are connected with rotor mechanisms; the airbag is arranged at the bottom of an engine of the rotor mechanisms; radiators are arranged on the tops of the engine arms; an power output shaft of each engine is connected with a centrifugal clutch in a reduction box; a driven gear on a main shaft is meshed with a driving gear on the centrifugal clutch; a variable pitch disc is arranged on the main shaft in a sleeving manner; rotor heads are fixed on the main shaft and are connected with the rotors in a clamping mode; the rotors are connected with one another in the clamping mode; a rocker arm of a servo rudder is connected with a connecting rod; the connecting rod is connected with a variable pitch disc shifting fork; a fixing seat is connected with the variable pitch disc shifting fork by virtue of a swing connecting rod; the variable pitch disc shifting fork is connected to the variable pitch disc; a screw pitch is arranged at the horizontal axis of the variable pitch disc and the rear end of a rotor clamp pull rod in the sleeving manner; and the rotor clamp pull rod is fixed on a rotor clamp. The unmanned aerial vehicle has the advantage of being not subjected to space limitation.


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    Title :

    Oil drive variable pitch quadrotor type multifunctional fire-fighting unmanned aerial vehicle


    Contributors:
    CAO BING (author) / QI ZHENGYAN (author)

    Publication date :

    2015-05-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / A62C FIRE-FIGHTING , Feuerbekämpfung



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