A two-degree-of-freedom rotating and folding UAV arm

Abstract

The invention discloses a two-degree-of-freedom rotating and folding unmanned aerial vehicle arm. The unmanned aerial vehicle arm mainly includes a first arm, a second arm, a folding motor, a first connection plate, a second connection plate, and a transmission gear. and connecting bearings. When assembling, put the transmission gear into the first connection plate first, so that the outer teeth mesh with the inner teeth; then insert the first connection plate between the two second connection plates, so that the through holes of the three are coaxial; then , install the folding motor on the second connection plate, make the transmission groove of the output shaft fit the protrusion, and connect the end of the output shaft with the connecting bearing; finally, start the folding motor so that the output shaft passes through the protrusion Rotating with the transmission gear and internal teeth, since the folding motor is relatively fixed to the second arm, and the output shaft is relatively fixed to the first arm, the second arm will rotate and fold around the output shaft, and finally enter the second groove , to complete the folding operation of the arm. The invention also has the advantages of simple structure, convenient operation and easy implementation.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicle structure design, in particular to a two-degree-of-freedom rotating and folding unmanned aerial vehicle arm. Background technique [0002] With the development of science and technology, drones have been used in various fields. Most of the existing unmanned aerial vehicles are relatively large in size, especially the outstretched arms occupy a large space, which causes great troubles for the storage and transportation of the unmanned aerial vehicles. In the face of the UAV market, reducing the overall volume of UAVs, improving their portability and flexibility has become an urgent problem to be solved. [0003] In the prior art, the technology that can realize the contraction and expansion of the drone's arm has been applied, but all of them use circular arms for telescopic expansion and contraction of the arms. With the telescopic telescopic arm, it is easy to cause the arm to be unable t...

AI Technical Summary

Problems solved by technology

With the telescopic telescopic arm, it is easy to cause the arm to be unable to extend due to the large friction coefficient between the arms, or the friction coefficient is too small to cause the contraction to be too fast, and the synchronous contraction cannot be achieved, which will affect the flight stability of the UAV.

Moreover, in order to ensure the effective strength of the machine arm, an integrated machine arm structure design is adopted. From the motor connection end to the root of the machine arm, the structure becomes thicker and thicker. The flight time of man and machine is shortened and the efficiency is reduced

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