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Teeterboard type unmanned aerial vehicle rotor and unmanned aerial vehicle

A technology of rotor and seesaw, applied in the field of unmanned aerial vehicles, can solve the problems of high requirements for blade installation and manufacturing, no way to improve the exciting force of the rotor, and unsuitable for medium-sized unmanned aerial vehicles, etc., to reduce the vibration level and facilitate the The effect of fault diagnosis, convenient disassembly and transportation

Pending Publication Date: 2019-04-26
一飞智控(天津)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design of the torsion bar action requires a certain amount of space, which is not suitable for the characteristics of medium-sized drones
[0005] Second, the control effect and angular velocity damping of the seesaw rotor are relatively small. In order to increase the angular velocity damping, this type of rotor must be equipped with a mechanical stabilization device - a stabilizer bar, which will cause a complex structure and increase the weight.
[0006] Third, the interface structure of the paddle clamp installation paddle is fixed by bolts and cannot be adjusted, which has high requirements for the installation and manufacture of the paddle
There is no way to improve the exciting force caused by the rotor on the vibration surface, resulting in a large vibration of the rotor system

Method used

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  • Teeterboard type unmanned aerial vehicle rotor and unmanned aerial vehicle
  • Teeterboard type unmanned aerial vehicle rotor and unmanned aerial vehicle
  • Teeterboard type unmanned aerial vehicle rotor and unmanned aerial vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A seesaw UAV rotor of the present invention includes a hub assembly 100 and two rotationally symmetrical paddle clip assemblies 200;

[0032] The hub assembly is of symmetrical design, which includes a hub positioning block connected to the rotor shaft through a transversely extending positioning pin shaft, and is respectively positioned with the rotor hub through two longitudinally extending semi-axis seesaw positioning pins 2 The two hub side plates 3 connected by block, the inner end corresponds to the hub support arm fixedly connected with the hub side plate 3 by bolts, and the propeller clamp is axially positioned on the hub support arm Distance ring; wherein, the rear part of the propeller hub support arm is a connecting plate, the two ends of the connecting plate are correspondingly fixedly connected with the propeller hub side plate bolts, and the front part is a columnar body, so as to assemble subsequent propeller clips. Wherein, the horizontal direction and t...

Embodiment 2

[0039] On the basis of the above-mentioned embodiments, a sleeve and a shaft sleeve are sequentially installed on the seesaw positioning pin 2, and bearings, anti-loosening fasteners and lubricating oil caps are arranged at both ends. Axial displacement is arranged on seesaw locating pin 2, and on the seesaw locating pin from inside to outside are needle roller bearing, thrust bearing, spacer and nut successively. The outermost nut is used to adjust the center distance of the propeller hub assembly. A safety pin is required at its end.

[0040] The function of the rotatable setting of the seesaw positioning pin is to realize the waving motion of the seesaw type rotor system, and the lubricating oil cap 7 is housed on the hub side plates 3 on both sides for oil filling and sealing. The seesaw positioning pins 2 at both ends of the propeller hub positioning block 1 adopt needle roller bearings and thrust bearings for transmitting the axial force on the seesaw positioning pins 2...

Embodiment 3

[0044]Further, a sealed bearing is provided between the open end of the connecting cylinder of the paddle clamp 13 and the propeller hub support arm. The sealing of the propeller clip assembly is realized by the selected single-side sealed bearing. An oil injection hole is added in the middle of the connecting cylinder of the propeller clip 13 to ensure the lubrication and sealing of the propeller clip assembly. The lubrication of the propeller clip assembly depends on the paddle The connection of the clamp 13 is realized in the internal space of the cylinder.

[0045] Moreover, the paddle clamp includes an inner bolt fixed connection and an outer bolt belonging to an adjustable connection, and the interface design of the blade is convenient for installation and control of the shimmy force of the blade. The paddle clamp 13 is connected with two bolts at the paddle installation place. Through the axial pre-tightening force of the bolts, the splint of the propeller clamp 13 is ...

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Abstract

The invention discloses a teeterboard type unmanned aerial vehicle rotor and an unmanned aerial vehicle. The unmanned aerial vehicle rotor comprises a propeller hub component and two propeller clip components which are arranged in a rotational symmetric manner, wherein the rotor propeller clip component and propeller hub side plates on two sides of the propeller hub component are connected throughfour screws, the mechanism is simple, maintenance is convenient, and assembly and disassembly transportation and failure diagnosis can be facilitated; the propeller hub component and the propeller clip components adopt a symmetric layout mode, the structure is simple, practical and reliable, and cost is reduced; the gravity center of the propeller hub and the rotor axis are controlled to be superposed; the propeller clip components are assembled by adopting a temperature differential method, which is adopted as the connection mode of the rotor propeller clip component, so that the vibration level of a teeterboard type rotor system can be reduced. By adopting a modular design, the structure complexity is reduced, the design, modulation, maintenance and other operations of the rotor systemcan be simplified, the propeller component can rotate along with the rotor axis, and flapping motion of the propeller hub component can be realized.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicles, and in particular relates to a seesaw type unmanned aerial vehicle rotor and an unmanned aerial vehicle. Background technique [0002] In the field of rotor UAVs, the rotor system is the core component for generating lift and maneuvering force for UAV flight. A traditional helicopter rotor system consists of two or more blades connected to a hub. The blades are usually kept in rotational motion by torque from the engine. The rotor system produces the necessary lift and pulling force for helicopter flight, and the rotor system is also the main vibration source of the UAV. The ability to efficiently complete vertical flight is a basic feature of a rotorcraft. The solution or improvement of the flight performance, flight quality, vibration, noise level, life and reliability of UAVs all depend on the mastery of the aerodynamic and dynamic characteristics of the rotor system. At pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/43
CPCB64C27/43
Inventor 刘帅孙涛贾良现
Owner 一飞智控(天津)科技有限公司