Remotely controlled retracting and stretching device for arm of multi-rotor unmanned aerial vehicle

Abstract

The invention relates to a remotely controlled retracting and stretching device for an arm of a multi-rotor unmanned aerial vehicle. The remotely controlled retracting and stretching device for the arm of the multi-rotor unmanned aerial vehicle comprises folding mechanisms, a long cross-shaped plate, a short cross-shaped plate and the arm, wherein the folding mechanisms are mounted at four cornersof an unmanned aerial vehicle body; the long cross-shaped plate and the short cross-shaped plate are mounted in the middle of the unmanned aerial vehicle; the arm is connected to one ends of the folding mechanisms; the other ends of the folding mechanisms are movably connected with the short cross-shaped plate by short connecting rods; the arm is movably connected with the long cross-shaped platethrough long connecting rods; the long cross-shaped plate and the short cross-shaped plate are coaxial and are vertically distributed in a staggered manner; the long cross-shaped plate and the shortcross-shaped plate are separately connected with a steering engine; the steering engine is connected with a controller; and the steering engine is remotely controlled to drive the long cross-shaped plate and the short cross-shaped plate to rotate so as to unfold and fold the arm. Remotely controlled electric signals replace the traditional manual operation, so that a control system can be integrated onto an existing unmanned aerial vehicle remote controller; one-key unfolding and one-key folding of the remote controller are realized; speediness in operation and good maneuverability are achieved; the arm can be unfolded in time; time difference exists in rotation; and the circumstance that the device is jammed in a movement process to burn out the steering engine is avoided.

Description

technical field [0001] The invention relates to the field of multi-rotor unmanned aerial vehicles, in particular to a remote-controlled retractable device for arms of a multi-rotor unmanned aerial vehicle. Background technique [0002] Drones are often better suited for missions that are too "dumb, dirty or dangerous" than manned aircraft. According to the application field, UAV can be divided into military and civilian. In terms of military use, UAVs are divided into reconnaissance aircraft and target aircraft. In terms of civilian use, drones + industry applications are the real rigid needs of drones. At present, it is widely used in aerial photography, agriculture, plant protection, micro selfie, express delivery, disaster relief, observation of wild animals, monitoring of infectious diseases, surveying and mapping, news reports, power inspection, disaster relief, film and television shooting, and romance creation. In addition to the use of drones themselves, developed...

AI Technical Summary

Problems solved by technology

[0003] With the expansion of the application field of multi-rotor drones, the problem of transportation and carrying has become increasingly prominent. In order to reduce the risk of damage to drones during transportation and achieve the purpose of portability, there are currently several solutions, such as manual umbrellas. Even if the arm of the drone is folded in an umbrella shape, it needs to be manually released and then bent down, and the folding can not be completed at one time. Another example is to fold the arm back to the fuselage to make the whole rectangular In order to reduce the volume, but all kinds of schemes need to be manually controlled, which is more troublesome and has poor maneuverability. In case of emergency, the arm may not be opened in time

In the process of folding and opening the UAV arm, there are problems such as inconvenient manual control and poor maneuverability, and it is impossible to realize the automation of control and retraction. In addition, the flight process is unstable, and the device is prone to jamming and burning of the rudder during movement. machine

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