A quadrotor aircraft capable of automatically leveling

Abstract

The invention discloses a quadrotor aircraft capable of automatic leveling, and relates to the field of unmanned aerial vehicles, including a central frame, a bearing platform, a rotor support rod, a rotor assembly, an arc frame, an annular frame and a landing gear, wherein two arc frames are slidably connected to an annular groove provided on the inner wall of the annular frame by means of sliders 2 provided at the upper and lower ends thereof, and the two annular frames are connected to the other two arc frames by means of transverse frames provided on both sides thereof, a rotating member is installed in a slider 1 outside the annular frame, and a supporting member is installed in a slider 1 inside the annular frame, and the invention designs the overall structure of the quadrotor aircraft into a self-adjustable structure, and when landing on some uneven ground, gravity can be used to automatically return it to a parallel state, so as to achieve the effect of taking off and landing on the uneven ground. At the same time, such an annular structure also has a protective effect on the quadrotor body, and can prevent some external damage.

Description

Technical Field

[0001] The invention belongs to the field of unmanned aerial vehicles, and in particular relates to a quad-rotor aircraft capable of automatic leveling. Background Art

[0002] Among the existing technologies, drones are widely used in aerial photography, agriculture, plant protection, micro selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying and mapping and other fields. However, for quadcopters, they generally need to land on a plane. For uneven terrain, it will be difficult for the drone to take off accurately again after landing. Summary of the invention

[0003] The object of the present invention is to provide a quad-rotor aircraft that can automatically level itself, so as to solve the above-mentioned defects caused by the prior art.

[0004] A quadrotor aircraft capable of automatically leveling, comprising:

[0005] A central frame, wherein a load-bearing platform for mounting a load is connected to the lower end of the central frame, and four rotor support rods arranged at 90 degrees to each other are installed on the side of the central frame, and a rotor assembly is installed at the end of the rotor support rod;

[0006] An arc-shaped frame, each rotor support rod corresponds to one of the arc-shaped frames, an arc-shaped slide groove is arranged in the arc-shaped frame, and a slider 1 is slidably connected in the slide groove;

[0007] An annular frame, wherein the annular frame has two and is symmetrically arranged, wherein the two symmetrically arranged arc-shaped frames are slidably connected to the annular groove arranged on the inner wall of the annular frame by means of sliders 2 arranged at the upper and lower ends thereof, and the two annular frames are connected to the other two arc-shaped frames by means of transverse frames arranged on both sides thereof, and a rotating member is installed in a slider 1 located outside the annular frame, wherein two rotor support rods pass through the rotating member and can be rotated by means of the rotating member, and a support member is installed in a slider 1 located inside the annular frame, and the other two rotor support rods pass through the support member and are fixedly connected to the support member;

[0008] The landing gear is independently provided with two and symmetrically arranged, and the two landing gears are respectively fixed to the lower ends of two annular frames fixedly connected to the transverse frame.

[0009] Preferably, the rotor assembly comprises a motor and a propeller, the motor is mounted on a rotor support rod, and the propeller is mounted on an output end of the motor.

[0010] Preferably, the bearing platform comprises a supporting column and a base, the upper end of the supporting column is connected to the central frame, and the lower end of the supporting column is connected to the base.

[0011] Preferably, a pan-tilt camera is installed at the lower end of the base.

[0012] Preferably, the rotating member is specifically a bearing.

[0013] Preferably, the transverse frame is specifically an L-shaped rod, and two ends of the rod are respectively fixedly connected to the arc-shaped frame and the annular frame.

[0014] The advantages of the present invention are that the overall structure of the quadcopter is designed to be self-adjustable, so that when landing on some uneven ground, gravity can automatically return it to a parallel state, so as to achieve the effect of taking off and landing on uneven ground. At the same time, such an annular structure also has a protective effect on the quadcopter body, which can prevent some external damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 , Figure 2 It is a schematic diagram of the structure of the present invention from different viewing angles.

[0016] Figure 3 It is a schematic diagram of the arc frame, the ring frame and the landing gear part in the present invention.

[0017] Figure 4 It is a schematic diagram of the center frame, suspension support rods and load-bearing platform.

[0018] Among them: 1 central frame, 10 bearing platform, 100 support column, 101 base, 11 rotor support rod, 12 rotor assembly, 120 motor, 121 propeller, 2 arc frame, 20 slide slot, 21 slider 1, 22 rotating part, 23 support part, 3 ring frame, 30 ring slot, 31 slider 2, 4 horizontal frame, 5 gimbal camera, 6 landing gear. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0020] like Figures 1 to 4 As shown, a quadrotor aircraft capable of automatic leveling comprises:

[0021] A central frame 1, the lower end of which is connected to a load-bearing platform 10 for mounting a load, the load-bearing platform 10 comprising a support column 100 and a base 101, the upper end of the support column 100 being connected to the central frame 1, the lower end of the support column 100 being connected to the base 101, four rotor support rods 11 arranged at an angle of 90 degrees to each other being mounted on the side of the central frame 1, the end of the rotor support rod 11 being mounted with a rotor assembly 12, the rotor assembly 12 comprising a motor 120 and a propeller 121, the motor 120 being mounted on the rotor support rod 11, the propeller 121 being mounted at the output end of the motor 120;

[0022] The arc-shaped frame 2, each rotor support rod 11 corresponds to one of the arc-shaped frames 2, an arc-shaped slide groove 20 is provided in the arc-shaped frame 2, and a slider 21 is slidably connected in the slide groove 20;

[0023] The annular frame 3 has two and is symmetrically arranged, wherein two symmetrically arranged arc-shaped frames 2 are slidably connected to the annular groove 30 arranged on the inner wall of the annular frame 3 by means of sliders 2 31 arranged at the upper and lower ends thereof, and the two annular frames 3 are connected to the other two arc-shaped frames 2 by means of transverse frames 4 arranged on both sides thereof, and a rotating member 22 is installed in the slider 1 21 located outside the annular frame 3, wherein two rotor support rods 11 pass through the rotating member 22 and can be rotated by means of the rotating member 22, and a support member 23 is installed in the slider 1 21 located in the annular frame 3, and the other two rotor support rods 11 pass through the support member 23 and are fixedly connected thereto, and the rotating member 22 is specifically a bearing; the arc-shaped frame 2 has two uses: first, it can cooperate with the arc part on the landing gear 6 to achieve the effect of rotational movement and the slider 1 21 without bearing can move in an arc at a certain angle, and second, it is fixed on the landing gear 6 for the slider 1 21 with bearing to move in an arc at a certain angle. When the ground is not parallel to the plane supported by the landing gear 6, under the action of gravity, the aircraft body (i.e., the center frame 1, the rotor support rod 11 and the rotor assembly 12) can move in these degrees of freedom to make the plane of the aircraft body tilt at an angle corresponding to the ground.

[0024] The landing gear 6 is independently provided with two and symmetrically arranged, and the two landing gears 6 are respectively fixed to the lower ends of the two annular frames 3 fixedly connected to the transverse frame 4.

[0025] In this embodiment, in order to realize the shooting function, a gimbal camera 5 can be installed at the lower end of the base 101 .

[0026] In this embodiment, the transverse frame 4 is specifically an L-shaped rod, and two ends of the rod are fixedly connected to the arc frame 2 and the annular frame 3 respectively.

[0027] In the present invention, the center of the aircraft body composed of the central frame 1 , the rotor support rod 11 , the rotor assembly 12 , the carrying platform 10 and the load is located below the central frame 1 .

[0028] The specific implementation process of the above scheme is as follows:

[0029] When the aircraft of the present invention is placed on the target ground, the aircraft body will be adjusted to a horizontal state under the action of its own weight, and then take off as needed. When landing, the aircraft body is always kept in a horizontal state, and the landing gear 6, the transverse frame 4, the annular frame 3 and other parts will be adjusted to a state matching the target ground.

[0030] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A quadrotor aircraft capable of automatic leveling, characterized in that: include: A central frame (1), wherein the lower end of the central frame (1) is connected to a load-bearing platform (10) for mounting a load, and the side of the central frame (1) is provided with four rotor support rods (11) arranged at an angle of 90 degrees to each other, and the ends of the rotor support rods (11) are provided with rotor assemblies (12); An arc-shaped frame (2), each rotor support rod (11) corresponds to one of the arc-shaped frames (2), an arc-shaped slide groove (20) is arranged in the arc-shaped frame (2), and a slider (21) is slidably connected in the slide groove (20); An annular frame (3), wherein the annular frame (3) has two and is symmetrically arranged, wherein the two symmetrically arranged arc-shaped frames (2) are slidably connected to an annular groove (30) arranged on the inner wall of the annular frame (3) by means of sliders (31) arranged at the upper and lower ends thereof, and the two annular frames (3) are connected to the other two arc-shaped frames (2) by means of transverse frames (4) arranged on both sides thereof, and a rotating member (22) is installed in a slider (21) located outside the annular frame (3), wherein two rotor support rods (11) pass through the rotating member (22) and can be rotated by means of the rotating member (22), and a support member (23) is installed in a slider (21) located inside the annular frame (3), and the other two rotor support rods (11) pass through the support member (23) and are fixedly connected thereto; Landing gear (6), wherein two landing gears (6) are independently provided and symmetrically arranged, and the two landing gears (6) are respectively fixed to the lower ends of two annular frames (3) fixedly connected to the transverse frame (4); The bearing platform (10) comprises a support column (100) and a base (101), wherein the upper end of the support column (100) is connected to the central frame (1), and the lower end of the support column (100) is connected to the base (101); The transverse frame (4) is specifically an L-shaped rod, and the two ends of the rod are respectively fixedly connected to the arc-shaped frame (2) and the annular frame (3).

2. The automatic leveling quadrotor according to claim 1, characterized in that: The rotor assembly (12) comprises a motor (120) and a propeller (121); the motor (120) is mounted on a rotor support rod (11); and the propeller (121) is mounted on an output end of the motor (120).

3. The automatic leveling quadrotor according to claim 1, characterized in that: A pan-tilt camera (5) is installed at the lower end of the base (101).

4. The automatic leveling quadrotor according to claim 1, characterized in that: The rotating member (22) is specifically a bearing.

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