Main rotor mechanism of single-rotor unmanned aerial vehicle

Abstract

The invention discloses a main rotor mechanism of a single-rotor unmanned aerial vehicle (UAV). The main rotor mechanism comprises a main rotor head fixedly connected to a spindle of the UAV. The mainrotor head comprises a center of a paddle base, and the center of the paddle base has a vertical arm and a cross arm forming a T-shaped structure. The vertical arm is fixedly connected to the spindle. Two ends of the cross arm are both provided with a main paddle clamp for clamping the main rotor, and one end of the main paddle clamp is sleeved in the cross arm. The sleeved portion is provided with a thrust bearing and at least a paddle included angle contact bearing. The two main paddle clamps is rotatably connected to the cross arm both through the thrust bearing and the paddle included angle contact bearings. The sidewalls of the two main paddle clamps are both provided with paddle clamp arms. Through the angular contact bearings, the problem of axial clearance of the main rotor is solved; under the condition of no creep of the main rotor, the main rotor deflection can be smoother, and stability of the main rotor mechanism during operation of the UAV is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicles, in particular to a single-rotor unmanned aerial vehicle. Background technique [0002] Single-rotor drones, also known as helicopter drones, fly through the main rotor and change the direction of deflection through the tail rotor. Compared with multi-rotor or fixed-wing drones, they have the characteristics of strong maneuverability and fast flight speed. , so in the field of competition, helicopter UAV has always been a relatively popular model, and the main rotor mechanism of helicopter UAV is the power source of the whole UAV, so the main rotor mechanism needs excellent stability for To ensure the stable flight of the UAV, when the main rotor rotates, due to the large centrifugal force, the deflection of the main rotor may not be completed smoothly, or the deflection cannot reach the predetermined angle. The main rotor mechanism of the existing helicopter UAV, its main The de...

AI Technical Summary

Problems solved by technology

[0002] Single-rotor drones, also known as helicopter drones, fly through the main rotor and change the direction of deflection through the tail rotor. Compared with multi-rotor or fixed-wing drones, they have the characteristics of strong maneuverability and fast flight speed. , so in the field of competition, helicopter UAV has always been a relatively popular model, and the main rotor mechanism of helicopter UAV is the power source of the whole UAV, so the main rotor mechanism needs excellent stability for To ensure the stable flight of the UAV, when the main rotor rotates, due to the large centrifugal force, the deflection of the main rotor may not be completed smoothly, or the deflection cannot reach the predetermined angle. The main rotor mechanism of the existing helicopter UAV, its main The deflection connection of the propeller clamp is completed by installing thrust bearings and ordinary roller bearings. The thrust bearing bears its centrifugal force. However, due to the large axial clearance of the thrust bearing, in actual use, the deflection and rotation of the main rotor are related to the There is a certain error in the set value, so a main rotor mechanism that can effectively reduce the error caused by the centrifugal force and ensure a smoother deflection of the main rotor is needed

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