Transmission system and unmanned aerial vehicle

Abstract

The embodiment of the invention provides a transmission system and an unmanned aerial vehicle. The output end of a starting and power generation integrated motor of the transmission system is connected with the first input end of a main speed reducer; the input end of the starting and power generation integrated motor is used for being electrically connected with a controller; the second input endof the main speed reducer is connected with the output end of an overrunning clutch; the first output end of the main speed reducer is connected with an outer shaft; the second output end of the mainspeed reducer is connected with an inner shaft; the input end of the overrunning clutch is used for being connected with the output end of an engine, the input end of the engine is used for being electrically connected with a controller, when the controller determines that the rotating speeds output by the inner shaft and the outer shaft both reach a preset rotating speed and the engine is started to reach an idle speed, the starting and power generation integrated motor is controlled to work in the mode of exiting from the engine, and when it is determined that the rotating speed reaches therotating speed corresponding to the engine or the engine is accelerated to the rotating speed, the starting and power generation integrated motor is controlled to work in the generator mode. By applying the transmission system in the embodiment of the invention, the problem that a transmission system in the prior art is difficult to arrange can be solved.

Description

technical field [0001] The invention relates to the technical field of aircraft, in particular to a transmission system and an unmanned aerial vehicle. Background technique [0002] At present, the existing small drones often use piston or rotor engines as power sources. When the engine starts, the engine speed reaches the idling stage in an instant. And to reduce the load when the engine starts, the technical means often used in the prior art is to use a centrifugal clutch or a loose drive belt to disconnect the transmission system from the power chain of the engine; when the power of the engine is large, the centrifugal clutch can be used When the power is disconnected by means of a clutch or a tensioned belt, but the centrifugal clutch or loose transmission belt in the prior art is relatively large, it will inevitably result in a large overall volume and heavy weight of the entire transmission system, which in turn will cause the transmission system to be damaged on the U...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing small drones often use piston or rotor engines as power sources. When the engine starts, the engine speed reaches the idling stage in an instant. And to reduce the load when the engine starts, the technical means often used in the prior art is to use a centrifugal clutch or a loose drive belt to disconnect the transmission system from the power chain of the engine; when the power of the engine is large, the centrifugal clutch can be used When the power is disconnected by means of a clutch or a tensioned belt, but the centrifugal clutch or loose transmission belt in the prior art is relatively large, it will inevitably result in a large overall volume and heavy weight of the entire transmission system, which in turn will cause the transmission system to be damaged on the UAV. The difficulty of layout increases, and it is easy to cause the structure of the transmission system on the UAV to be bloated

Images