Four-rotor aircraft provided with telescopic and foldable undercarriages

Abstract

The invention discloses a four-rotor aircraft provided with telescopic and foldable undercarriages. The four-rotor aircraft comprises an aircraft body, four rotor arms and four rotors, wherein the four rotor arms and the aircraft are combined into a cross-shaped structure; the four rotors are arranged on the four rotor arms respectively; grooves are formed in the lower surfaces of the rotor arms; the undercarriages are arranged in the grooves; each undercarriage comprises a hollow main body, a telescopic body, a driving motor and a lead screw; the driving motor and the lead screw are arranged in the hollow main body; one end of the main body is hinged to each rotor arm; one end of the telescopic body extends into the main body from the other end of the main body; the driving motor is used for driving the lead screw to rotate positively or negatively; the lead screw is used for driving the telescopic body to extend outwards or retract inwards along a cavity in the main body; the undercarriages in retraction states can be rotationally folded in the grooves. As the undercarriages have not only telescopic functions but also foldable functions, when the aircraft is positioned on the ground, the height of the aircraft body can be adjusted, and conveniences are brought to daily maintenance work.

Description

Technical field [0001] The invention relates to an aircraft, in particular to a four-rotor aircraft. Background technique [0002] The existing aircraft have the following defects: First, the tripod has no telescopic function and cannot adjust the height of the fuselage when it is on the ground, which brings great inconvenience to daily maintenance; Second, the communication module is easily affected by the circuit board in the fuselage. Interference, which affects the normal operation of the aircraft; third, the volume is relatively large, which will occupy a relatively large space, so it is not convenient to carry and transport; fourth, the load of the power equipment is determined, and the actual body weight cannot be changed according to the actual body weight. Power plant. Some of the patent documents retrieved are as follows: [0003] On November 20, 2013, the State Intellectual Property Office published the publication number CN203294313U, and the patent name is a patent f...

AI Technical Summary

Problems solved by technology

[0002] The existing aircraft has the following defects: one is that the tripod has no telescopic function, and the height of the fuselage when it is on the ground cannot be adjusted, so it brings great inconvenience to daily maintenance; the other is that the communication module is easily affected by the circuit board in the fuselag

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