Long-endurance heavy-load oil-drive direct-driven agricultural plant protection unmanned aerial vehicle

Abstract

The invention aims at providing an oil-drive direct-driven multi-rotor-wing agricultural plant protection unmanned aerial vehicle which can greatly prolong the runtime, is high in structural stability and anti-shock capacity and can increase the load capacity. According to the adopted technical solution, the oil-drive direct-driven multi-rotor-wing agricultural plant protection unmanned aerial vehicle comprises a machine frame, avionics, a power mechanism and a spraying mechanism; the machine frame comprises a supporting beam, an upper central plate, a lower central plate, machine arms and pull rods; the upper central plate and the lower central plate are fixedly connected to the supporting beam; the six machine arms are fixed between the upper central plate and the lower central plate in a crossed mode in the regular hexagon diagonal direction; a reinforced umbrella-shaped structure formed by the pull rods is arranged between the machine arms and the supporting beam; each power unit comprises an engine fixed to an engine base, a steering engine fixed to the bottom of the engine, and a propeller connected to an output shaft of the engine; the power mechanism of an oil-drive direct-driven structure; and the output shafts of the engines are directly connected with the propellers.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicles, and in particular relates to an oil-powered direct-drive agricultural plant protection unmanned aerial vehicle with long endurance and heavy load. Background technique [0002] UAV is a kind of unmanned aircraft mainly controlled by radio remote control or by its own program. According to the source of lift, it is mainly divided into two categories, fixed-wing UAV and rotary-wing UAV. Compared with manned aircraft, UAV has flexible design, small size, light weight, long battery life, high space utilization rate, good stealth effect, high safety factor, strong survivability, strong autonomous control ability, no casualties, maneuverability It has strong adaptability, low training and maintenance costs, can fly in high-risk airspace, the performance of the weapon platform is not limited by human physiological conditions, low cost (usually only 10% or even a few percent of the cost ...

AI Technical Summary

Problems solved by technology

[0004] At present, multi-rotor aircraft for agricultural plant protection are mostly driven by batteries. Since the energy density of batteries is much lower than that of fossil fuels such as gasoline, the flight time and load capacity of current multi-rotor aircraft are very limited. The longest flight time is about 30 minutes, and the maximum load At about 20Kg, this greatly limits the application and development of plant protection drones

The use of oil engine drive can significantly increase the load and extend the flight time, but the traditional oil engine power mechanism mostly uses a mechanical transmission system, which has problems such as high noise, large friction, large energy loss, low precision, and large elastic deformation. Sometimes in order to improve the accuracy and speed, you have to pay a high cost, resulting in more harm than good

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