Transmission device, engine and unmanned aerial vehicle

Abstract

The invention provides a transmission device, and relates to the technical field of piston type internal combustion engines and helicopters. The transmission device is used for an in-line piston engine and comprises a crank-link mechanism and a speed reducing mechanism, the crank-link mechanism is in driving connection with the speed reducing mechanism, a propeller shaft used for providing power for rotation of a propeller is arranged at the tail end of the speed reducing mechanism, and the reducing mechanism is in driving connection with the propeller shaft. According to the transmission device, the defects of high cost and large dead weight caused by the fact that an oil-electricity hybrid power transmission device of a traditional unmanned aerial vehicle needs to be provided with a power supply (battery) for starting an engine and a high-capacity battery for driving the motor besides the engine and the high-power electric motor are overcome. The defects of large number of parts and heavy dead weight caused by the fact that main parts of a piston type engine, such as a cylinder body, a cylinder head, a cylinder cover, an air valve and a valve, need to be symmetrically arranged left and right in a horizontally opposed piston engine of a traditional unmanned aerial vehicle are further overcome.

Description

technical field [0001] The invention relates to the technical field of piston internal combustion engines and helicopters, in particular to a transmission device, an engine and an unmanned aerial vehicle thereof. Background technique [0002] Unmanned aircraft is referred to as "drone" for short, and the English abbreviation is "UAV". It is an unmanned aircraft controlled by remote control equipment and / or built-in programs. With the development of market demand, some drones tend to develop in a large-scale direction, such as cargo drones or spraying drones, while other drones are becoming more and more small and lightweight. , to meet the user's requirements for convenience and entertainment. [0003] The driving device is the most important part of the structure of the UAV. The traditional UAV hybrid driving device is mainly an electric motor. In order to provide power to the electric motor, it needs to be equipped with a special engine for power generation, that is, a hy...

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Problems solved by technology

[0005] In view of this, one of the objects of the present invention is to provide a transmission device to solve the problem that the hybrid power transmission device in the prior art needs to configure the power supply for starting the engine in addition to the engine and the high-power electric motor. (Battery) and a large-capacity battery for driving the motor, resulting in high cost and heavy technical problems

At the same time, in order to solve the horizontally opposed piston engine in the prior art, the cylinder body, the cylinder head, and the cylinder head need to be arranged symmetrically in left and right, which leads to the technical problems of large number of parts and heavy weight

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