Four-rotor unmanned aerial vehicle

Abstract

The four-rotor unmanned aerial vehicle comprises an unmanned aerial vehicle body, an undercarriage, a vehicle arm assembly, a vehicle base, a motor and a vibration reduction assembly, and one end of the vehicle arm assembly is connected with the unmanned aerial vehicle body; the engine base is fixedly mounted at the other end of the engine arm assembly; the engine cover is fixedly mounted on the engine base; the output end of the motor penetrates through the machine cover and is provided with a propeller; the vibration reduction assembly comprises a vibration reduction partition plate, a first vibration reduction unit and a second vibration reduction unit, the vibration reduction partition plate is fixedly connected into the machine base, the interior of the machine base is divided into a circular cavity and an annular cavity through the vibration reduction partition plate, and the motor is fixedly installed in the circular cavity; the first vibration reduction units are distributed in the annular cavity at equal angles with the circle center of the machine base as the center, one ends of the first vibration reduction units are fixedly connected with the inner wall of the machine base, and the other ends of the first vibration reduction units are fixedly connected with the outer wall of the vibration reduction partition plate. The second vibration reduction units are distributed in the annular cavity with the circle center of the machine base as the center at equal angles, and the other ends of the second vibration reduction units penetrate through the vibration reduction partition plate to be connected with the outer wall of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), in particular to a four-rotor UAV. Background Art

[0002] A drone, or unmanned aerial vehicle (UAV), is an unmanned aircraft controlled by a radio remote control and its own programmable controller. Based on their platform configuration, drones include fixed-wing drones, unmanned helicopters, and multi-rotor drones. Drones offer a wide range of functions and are widely used in various fields, including geographic mapping and surveying, agricultural and forestry monitoring, logistics and transportation, and entertainment and sports.

[0003] When the drone's motor drives the propeller to rotate, it will generate high-frequency vibrations, which will produce loud noise. At the same time, the vibration will affect the stability of the drone's flight. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a four-rotor unmanned aerial vehicle.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A quad-rotor drone comprises: a drone body; a landing gear, which is symmetrically mounted on the bottom of the drone body; an arm assembly, which is provided with four arms and one end of which is connected to the drone body; a base, which is a cylindrical structure and is fixedly mounted on the other end of the arm assembly, and its interior is hollow, and a cover is fixedly mounted on the base; a motor, which is mounted in the base and has a propeller mounted on its output end through the cover; and a vibration damping assembly, which comprises: a vibration damping baffle, which is fixedly connected to the base and is arranged concentrically with the base, and the vibration damping baffle The interior of the machine base is divided into a circular chamber and an annular chamber, and the motor is fixedly installed in the circular chamber; a vibration damping unit one, the vibration damping unit one is distributed in the annular chamber at equal angles with the center of the machine base as the center, one end of the vibration damping unit one is fixedly connected to the inner wall of the machine base, and the other end of the vibration damping unit one is fixedly connected to the outer wall of the vibration damping partition; and a vibration damping unit two, the vibration damping unit two is distributed in the annular chamber at equal angles with the center of the machine base as the center, the vibration damping unit two and the vibration damping unit one are staggered at intervals, and the other end of the vibration damping unit two passes through the vibration damping partition and is connected to the outer wall of the motor.

[0007] A control module and a power module are installed in the drone body. A heat dissipation port and a power interface are also provided on the drone body. The power module is electrically connected to the control module, the power interface is electrically connected to the control module, and the motor is electrically connected to the control module.

[0008] The arm assembly includes: an arm, one end of which is fixedly connected to the drone body; a connecting base, which is fixedly connected to the other end of the arm, and the base is fixedly mounted on the connecting base.

[0009] The outer wall cross section of the vibration-damping partition is polygonal, and includes multiple connecting surfaces 1. The inner wall cross section of the vibration-damping partition is circular, and a through hole is opened on the connecting surface 1. The inner wall cross section of the base is multi-deformed, and includes multiple connecting surfaces 2.

[0010] The first vibration damping unit and the second vibration damping unit are provided with multiple layers up and down, and the second vibration damping unit is connected to the motor through the through hole.

[0011] The landing gear includes: a transverse tube; a T-shaped sleeve, which is fixedly connected to the middle part of the transverse tube; a longitudinal tube, one end of which is connected to the T-shaped sleeve; and a vibration reduction unit three, one end of which is fixedly connected to the bottom of the UAV body and the other end of which is fixedly connected to the other end of the longitudinal tube.

[0012] The first vibration reduction unit, the second vibration reduction unit and the third vibration reduction unit use dampers.

[0013] Beneficial effects of the utility model:

[0014] The utility model relates to a four-rotor drone, in which vibration reduction unit 2 and vibration reduction unit 1 are respectively arranged around the motor and around the vibration reduction partition, and the vibration reduction unit 1 and vibration reduction unit 2 are staggered. The vibration reduction unit 1 and vibration reduction unit 2 adopt dampers. The setting of the dampers can effectively consume energy when the motor drives the propeller to rotate, thereby achieving the effect of vibration reduction, ensuring the stability of the drone during operation, and reducing the spread of noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a four-rotor drone according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic plan view of a quadrotor drone according to one embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the connection between the base and the motor according to one embodiment of the present invention;

[0018] Figure 4 This is a cross-sectional view of the connection between the base and the motor according to one embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of a base according to an embodiment of the present invention;

[0020] Figure 6 This is a schematic internal plan view of a base according to an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1-UAV body; 2-landing gear; 3-arm assembly; 4-base; 5-motor; 6-vibration damping assembly; 7-vibration damping baffle; 8-circular chamber; 9-annular chamber; 10-vibration damping unit 1; 11-vibration damping unit 2; 12-heat dissipation vent; 13-power interface; 14-arm; 15-connection seat; 16-connection surface 1; 17-connection surface 2; 18-cross pipe; 19-T-type sleeve; 20-longitudinal pipe; 21-vibration damping unit 3; 22-propeller; 23-machine cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1-6 As shown, a quad-rotor drone according to an embodiment of the present invention includes a drone body 1, a landing gear 2, an arm assembly 3, a base 4, a motor 5 and a vibration reduction assembly 6.

[0025] The landing gear 2 is symmetrically mounted on the bottom of the UAV body 1; the arm assembly 3 is provided with four, one end of which is connected to the UAV body 1; the base 4 is a cylindrical structure, the base 4 is fixedly mounted on the other end of the arm assembly 3, the interior of which is hollow, and a cover 23 is fixedly mounted on the base 4; the motor 5 is mounted in the base 4, and a propeller 22 is mounted on its output end through the cover 23; the vibration reduction assembly 6 may include a vibration reduction baffle 7, a vibration reduction unit 10 and a vibration reduction unit 2 11, wherein the vibration reduction baffle 7 is fixedly connected to the base 4 and is arranged concentrically with the base 4, and the vibration reduction baffle 7 reduces the base 4 The interior is divided into a circular chamber 8 and an annular chamber 9, and the motor 5 is fixedly installed in the circular chamber 8; the vibration damping unit 10 is distributed in the annular chamber 9 at equal angles with the center of the machine base 4 as the center, one end of the vibration damping unit 10 is fixedly connected to the inner wall of the machine base 4, and the other end of the vibration damping unit 10 is fixedly connected to the outer wall of the vibration damping partition 7; the vibration damping unit 2 11 is distributed in the annular chamber 9 at equal angles with the center of the machine base 4 as the center, the vibration damping unit 2 11 and the vibration damping unit 10 are staggered at intervals, and the other end of the vibration damping unit 2 11 passes through the vibration damping partition 7 and is connected to the outer wall of the motor 5.

[0026] In one embodiment of the present invention, Figure 1 As shown, a control module and a power module are installed in the drone body 1. A heat dissipation port 12 and a power interface 13 are also provided on the drone body 1. The power module is electrically connected to the control module, the power interface 13 is electrically connected to the control module, and the motor 5 is electrically connected to the control module.

[0027] In one embodiment of the present invention, Figure 1 As shown, there are four arm assemblies 3, which are distributed and connected at the four corners of the drone body 1. Specifically, the arm assembly 3 may include an arm 14 and a connecting seat 15, wherein one end of the arm is fixedly connected to the drone body 1; the connecting seat 15 is fixedly connected to the other end of the arm 14, and the base 4 is fixedly mounted on the connecting seat 15.

[0028] In one embodiment of the present invention, Figure 5 and Figure 6 As shown, the outer wall cross section of the vibration-damping partition is polygonal, including multiple connecting surfaces 16. The inner wall cross section of the vibration-damping partition is circular, and a through hole is provided on the connecting surface 16. The inner wall cross section of the base 4 is multi-deformed, including multiple connecting surfaces 17.

[0029] In an embodiment of the present invention, the outer wall cross-section of the vibration-damping partition is a regular hexagon, and the inner wall cross-section of the base 4 is a regular dodecagon, wherein the connecting surface 16 and the connecting surface 2 17 connecting the vibration-damping unit 10 and the vibration-damping unit 2 11 are parallel.

[0030] In one embodiment of the present invention, Figure 4 、 Figure 5 and Figure 6 As shown, the first vibration damping unit 10 and the second vibration damping unit 11 are provided in multiple layers, and the second vibration damping unit 11 is connected to the motor 5 through the through hole. Specifically, the piston rod end of the first vibration damping unit 10 is fixedly connected to the first connection surface 16, and the piston rod end of the second vibration damping unit 11 abuts against the outer wall of the motor 5.

[0031] In the embodiment of the present invention, the first vibration damping unit 10 and the second vibration damping unit 11 are provided in two layers, and the two layers of the first vibration damping unit 10 and the second vibration damping unit 11 are symmetrically distributed.

[0032] In one embodiment of the present invention, Figure 1 and Figure 2 As shown, the landing gear 2 may include a transverse tube 18, a T-shaped sleeve 19, and a third vibration damping unit 21, wherein the T-shaped sleeve 19 is fixedly connected to the middle portion of the transverse tube 18; a longitudinal tube 20, one end of which is connected to the T-shaped sleeve 19; and a third vibration damping unit 21, one end of which is fixedly connected to the bottom of the drone body 1, and the other end of which is fixedly connected to the other end of the longitudinal tube 20. Specifically, the piston rod end of the third vibration damping unit 21 is fixedly connected to the longitudinal tube 20. By providing the corresponding third vibration damping unit 21 on the landing gear 2, a vibration damping effect can be achieved during landing, adapting to different terrain shapes.

[0033] In one embodiment of the present invention, the vibration reduction unit 10, the vibration reduction unit 2 11 and the vibration reduction unit 3 21 use dampers, for example, magnetic flow dampers, liquid dampers, gas dampers, etc.

[0034] According to the four-rotor drone of the embodiment of the present invention, vibration reduction unit 2 11 and vibration reduction unit 1 10 are respectively arranged around the motor 5 and around the vibration reduction partition, and the vibration reduction unit 1 10 and the vibration reduction unit 2 11 are staggered. The vibration reduction unit 1 10 and the vibration reduction unit 2 11 use dampers. The setting of the damper can effectively consume energy when the motor 5 drives the propeller 22 to rotate, thereby achieving the effect of vibration reduction, ensuring the stability of the drone during operation, and at the same time reducing the spread of noise.

[0035] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0036] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A quadrotor drone, characterized in that: include: drone body; A landing gear, the landing gear being symmetrically mounted on the bottom of the UAV body; An arm assembly, wherein four arm assemblies are provided, one end of each arm assemblies being connected to the UAV body; A machine base, which is a cylindrical structure and is fixedly mounted on the other end of the arm assembly. The interior of the machine base is hollow, and a cover is fixedly mounted on the machine base; A motor, the motor being mounted in the base, and having an output end thereof passing through the cover and provided with a propeller; as well as A vibration damping assembly, comprising: a vibration-damping baffle, the vibration-damping baffle being fixedly connected to the machine base and being arranged concentrically with the machine base, the vibration-damping baffle dividing the interior of the machine base into a circular chamber and an annular chamber, the motor being fixedly mounted in the circular chamber; A first vibration damping unit, wherein the first vibration damping unit is distributed at equal angles within the annular chamber with the center of the base as the center, one end of the first vibration damping unit is fixedly connected to the inner wall of the base, and the other end of the first vibration damping unit is fixedly connected to the outer wall of the vibration damping partition; as well as The vibration damping unit 2 is distributed at equal angles in the annular chamber with the center of the base as the center, the vibration damping unit 2 and the vibration damping unit 1 are staggered and spaced apart, and the other end of the vibration damping unit 2 passes through the vibration damping partition and is connected to the outer wall of the motor.

2. The quadrotor drone according to claim 1, characterized in that: A control module and a power module are installed in the drone body. A heat dissipation port and a power interface are also provided on the drone body. The power module is electrically connected to the control module, the power interface is electrically connected to the control module, and the motor is electrically connected to the control module.

3. The quadrotor drone according to claim 2, characterized in that: The arm assembly includes: An arm, one end of which is fixedly connected to the UAV body; A connecting base is fixedly connected to the other end of the machine arm, and the machine base is fixedly mounted on the connecting base.

4. The quadrotor drone according to claim 3, characterized in that: The outer wall cross section of the vibration-damping partition is polygonal, and includes multiple connecting surfaces 1. The inner wall cross section of the vibration-damping partition is circular, and a through hole is opened on the connecting surface 1. The inner wall cross section of the base is multi-deformed, and includes multiple connecting surfaces 2.

5. The quadrotor drone according to claim 4, characterized in that: The first vibration damping unit and the second vibration damping unit are provided with multiple layers up and down, and the second vibration damping unit is connected to the motor through the through hole.

6. The quadrotor drone according to claim 5, characterized in that: The landing gear comprises: transverse tube; A T-shaped sleeve, the T-shaped sleeve is fixedly connected to the middle part of the horizontal pipe; a longitudinal tube, one end of which is connected to the T-shaped sleeve; A vibration reduction unit three, one end of which is fixedly connected to the bottom of the UAV body, and the other end of which is fixedly connected to the other end of the longitudinal tube.

7. The quadrotor drone according to claim 6, characterized in that: The first vibration reduction unit, the second vibration reduction unit and the third vibration reduction unit use dampers.

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