Unmanned aerial vehicle (UAV) and UAV stable landing buffer device

Abstract

The invention discloses an unmanned aerial vehicle (UAV) and a UAV stable landing buffer device. The UAV stable landing buffer device comprises a shell, a first wind impeller, four wind impeller boxes, thread bushings, threaded rods, connecting plates and four buffer feet, wherein an air inlet is formed in the bottom of the shell, a main air duct is arranged on the air inlet, four secondary air ducts extending to the periphery are arranged on the main air duct in a communicating way, and the tail sections of the secondary air ducts vertically extend downwards; the first wind impeller is transversely arranged at the air inlet and is driven to rotate by means of airflow; the four wind impeller boxes are respectively and correspondingly fixed at the tail sections of the four secondary air ducts, and are positioned at the upper part positions in the tail sections; the thread bushings are fixed in the centers of second wind impellers in the wind impeller boxes; the thread bushings sleeve the threaded rods in a threaded way and are matched with the threaded rods by means of threads; the connecting plates are connected with the bottom ends of the threaded rods; the four buffer feet respectively correspond to the connecting plates and are fixed at the lower parts of connecting parts. When the UAV lands, a driving force can be generated by means of the upstream airflow, and the buffer feet are then pushed out by driving the threaded rods to move, so that the device is enabled to enter a buffer state.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicles, in particular to a device located at the bottom of the unmanned aerial vehicle and capable of buffering and protecting when landing. Background technique [0002] UAV is an unmanned aircraft controlled by radio remote control equipment and its own program control device. Civilian UAV has important applications in aerial photography, agriculture, plant protection, disaster relief and other fields. [0003] A multi-rotor UAV is a special unmanned helicopter with three or more rotor shafts. It drives the rotor through the rotation of the motor on each axis, thereby generating thrust. By changing the relative speed between different rotors, the magnitude of the single-axis propulsion can be changed, thereby controlling the trajectory of the aircraft. [0004] When the multi-rotor UAV lands and touches the ground, it is necessary to perform shock absorption to protect the fuselage. At present,...

AI Technical Summary

Problems solved by technology

[0004] When the multi-rotor UAV lands and touches the ground, it is necessary to perform shock absorption to protect the fuselage. At present, there are few such shock-absorbing and buffering devices, and some existing shock-absorbing and buffering devices are not ideal. Therefore, it is necessary to design a A buffer device that is more reasonable and has better shock absorption and buffering effects

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