Four-rotor unmanned aerial vehicle with landing buffering function

Abstract

The invention belongs to the field of unmanned aerial vehicles, and particularly relates to a four-rotor unmanned aerial vehicle with a landing buffering function. The four-rotor unmanned aerial vehicle includes a vehicle body, a first rotor mechanism and a second rotor mechanism, wherein the first rotor mechanism and the second rotor mechanism are symmetrically mounted on both sides of the vehicle body through a corresponding second pin shaft and a corresponding third pin shaft correspondingly. According to the unmanned aerial vehicle, a first folding mechanism and a second folding mechanismin the first rotor mechanism and the second rotor mechanism are overlapped only through a steering engine; when the unmanned aerial vehicle takes off and lands, the first folding mechanism and the second folding mechanism in the first rotor mechanism and the second rotor mechanism can be retracted; when the unmanned aerial vehicle lands, the first folding mechanism and the second folding mechanismin the first rotor mechanism and the second rotor mechanism have certain buffering functions; and occurrence of the phenomenon of impact damage of gear teeth of a high-speed gear in the steering engine caused by impact of the ground to a second supporting rod when the unmanned aerial vehicle lands is avoided, and then the fact that a driving device on the unmanned aerial vehicle is not damaged isensured.

Description

technical field [0001] The invention belongs to the field of unmanned aerial vehicles, in particular to a quadrotor unmanned aerial vehicle with a landing buffer function. Background technique [0002] At present, the landing gear on the traditional quadrotor UAV does not have a stackable function; during the flight of the UAV, the landing gear without the stacking function increases the flight resistance of the UAV, which in turn affects the unmanned aircraft. range and speed of the aircraft; even if some UAVs have a landing gear with a stacking function, the R&D and production costs of the UAV are increased due to the complexity of the control method of the landing gear; There are generally two ways to control the landing gear: one is to control the hydraulic pump installed on the airframe through a servo motor, and then control the stacking of several landing gears through hydraulic pressure; the other is to control several landing gears through at least two servo motors....

AI Technical Summary

Problems solved by technology

[0002] At present, the landing gear on the traditional quadrotor UAV does not have a stackable function; during the flight of the UAV, the landing gear without the stacking function increases the flight resistance of the UAV, which in turn affects the unmanned aircraft. range and speed of the aircraft; even if some UAVs have a landing gear with a stacking function, the R&D and production costs of the UAV are increased due to the complexity of the control method of the landing gear; There are generally two ways to control the landing gear: one is to control the hydraulic pump installed on the airframe through a servo motor, and then control the stacking of several landing gears through hydraulic pressure; the other is to control several landing gears through at least two servo motors. The folding of the landing gear; this traditional way of stacking the landing gear also increases the R&D and production costs of UAVs, thus affecting the progress of UAVs being widely used, and thus affecting the economic benefits of related enterprises

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