Rotor wing protection structure for unmanned aerial vehicle

Abstract

The rotor wing protection structure comprises a rotor wing arm and a leg column installed at the end, close to a propeller, of the rotor wing arm, the rotor wing arm and the leg column are of a vertical structure, and an annular notch sleeve is detachably installed at one end of the surface of the leg column; a lower arc-shaped side disc and an upper arc-shaped side disc are fixed to the outer wall of the side, away from the rotorcraft arm, of the annular notch sleeve, a three-point calibration structure is arranged between the top end of the upper arc-shaped side disc and the surface of the leg column, and a side cover coaxial with the upper arc-shaped side disc is fixed to the edge position of the top end of the upper arc-shaped side disc. Due to the structural design of the lower arc-shaped side disc and the upper arc-shaped side disc, the plane protection range of the rotor wing is extended, and the side cover can provide protection in a three-dimensional space and cover more possibly damaged areas of the rotor wing, so that the rotor wing is protected in all directions, and the risk of collision of the rotor wing or other accidents is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle (UAV) rotor protection, in particular to a UAV rotor protection structure. Background Art

[0002] The design and principle of the rotor protection structure for drones is intended to improve the safety and durability of the aircraft. The rotor system can be fully protected by using lightweight, high-strength materials to construct the outer shell, as well as a protective cover and collision-absorbing materials covering the entire rotor. The main principles of these structures are energy absorption and force dispersion. By absorbing and dispersing the energy brought by external collisions over a larger area, the rotor system is protected from damage and the impact on the entire aircraft is reduced, thereby improving flight safety and stability. At the same time, the protection structure needs to maintain a sufficiently lightweight design to avoid increasing the overall weight of the drone, thereby not affecting its flight performance and endurance; such as a drone rotor protection structure and drone disclosed in the authorization announcement number CN210618483U, the drone rotor protection structure includes a protection frame body, a connecting part and an arm; the drone includes a drone rotor protection structure. The protection frame body is arranged on the connecting part, and a clamping groove is provided in the middle of the clamping part. The connecting part has toughness so that the two ends of the clamping groove produce elastic deformation to open and recover toward both sides. A propeller is provided on the first end of the arm away from the drone body. The two ends of the clamping groove of the connecting part are opened and then clamped on the protrusions on both sides of the arm. The two ends of the clamping groove restore the deformation and form an interference fit with the protrusion and are tightly clamped and fixed on the protrusion, thereby realizing the one-step installation of the protection frame body. During use, this technical solution mainly utilizes the protection frame body in a planar and outward-expanding form to protect the arm and propeller. The protection frame does extend a certain protection range on the plane, but its spatial three-dimensional protection area is still quite limited, that is, when the rotor rotates, the outer edge of the rotor is still exposed to the external environment. This part is a protection blind spot, which makes it difficult to fully protect this area, increasing the risk of damage to the rotor. Utility Model Content

[0003] The purpose of the utility model is to provide a rotor protection structure for an unmanned aerial vehicle, which uses an arc-shaped side plate to extend the protection range of the rotor plane, and a side cover for protecting the edge of the rotor is installed on the top of the arc-shaped side plate to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotor protection structure for an unmanned aerial vehicle, comprising a rotor arm and a leg column installed at one end of the rotor arm near the propeller, the rotor arm and the leg column being a vertical structure, an annular notch sleeve being detachably installed at one end of the surface of the leg column, a lower arc-shaped side plate and an upper arc-shaped side plate being fixed on the outer wall of the annular notch sleeve on the side away from the rotor arm, a three-point calibration structure being arranged between the top end of the upper arc-shaped side plate and the surface of the leg column, a side cover coaxial with itself being fixed at the edge position of the top end of the upper arc-shaped side plate.

[0005] Preferably, the annular notch sleeve, the lower arc-shaped side plate, the upper arc-shaped side plate and the side cover are all made of components made of flexible plastic material.

[0006] Preferably, a plurality of reinforcing columns are fixed at the edge of the top end of the lower arc-shaped side plate, and the top ends of the reinforcing columns are fixedly connected to the bottom end of the upper arc-shaped side plate.

[0007] Preferably, a plurality of hollow portions are provided on the outer wall of the side cover.

[0008] Preferably, the three-point calibration structure includes a baffle fixed to one end of the leg column surface, three equidistant protrusions installed on the inner edge of the top end of the upper arc-shaped side plate, and an upper groove provided inside the baffle for plugging with the protrusion.

[0009] Preferably, a pin locking structure for tightening the annular notch sleeve is provided on one side of the annular notch sleeve close to the rotorcraft arm.

[0010] Preferably, the pin locking structure includes a first locking sleeve and a second locking sleeve fixed on the outer walls on both sides of the annular notch sleeve, and a main solid column and a secondary solid column fixed inside the first locking sleeve and the second locking sleeve, and the main solid column and the secondary solid column are both provided with internal threaded holes inside, and a positioning bolt for cooperating with the main solid column thread is installed on the outer wall of one side of the secondary solid column.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the rotor protection structure for the unmanned aerial vehicle is provided with an upper arc-shaped side plate and a side cover that cooperate with each other. The structural design of the lower arc-shaped side plate and the upper arc-shaped side plate extends the plane protection range of the rotor, and the side cover can provide protection in three-dimensional space, covering more areas of the rotor that may be damaged, thereby protecting the rotor in all directions and effectively reducing the risk of rotor collision or other accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0014] Figure 3 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0015] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 3 ;

[0016] Figure 5 It is a three-dimensional structural schematic diagram of the pin locking structure of the utility model;

[0017] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotor arm of the utility model.

[0018] In the figure: 1, rotorcraft arm; 2, leg column; 3, annular notch sleeve; 4, pin locking structure; 401, first locking sleeve; 402, second locking sleeve; 403, main solid column; 404, auxiliary solid column; 405, positioning bolt; 5, lower arc-shaped side plate; 6, upper arc-shaped side plate; 7, reinforcement column; 8, side cover; 801, hollow part; 9, three-point calibration structure; 901, raised part; 902, baffle; 903, upper groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-6 The utility model provides an embodiment: a rotor protection structure for a drone, comprising a rotor arm 1 and a leg column 2 installed at one end of the rotor arm 1 near the propeller, the rotor arm 1 and the leg column 2 are in a vertical structure, one end of the surface of the leg column 2 is detachably mounted with an annular notch sleeve 3, a side edge of the annular notch sleeve 3 close to the rotor arm 1 is provided with a pin locking structure 4 for tightening itself, a lower arc-shaped side plate 5 and an upper arc-shaped side plate 6 are fixed on the outer wall of the annular notch sleeve 3 away from the rotor arm 1, a three-point calibration structure 9 is provided between the top end of the upper arc-shaped side plate 6 and the surface of the leg column 2, and a side cover 8 coaxial with itself is fixed at the edge position of the top end of the upper arc-shaped side plate 6;

[0021] The annular notch sleeve 3, the lower arc-shaped side plate 5, the upper arc-shaped side plate 6, and the side cover 8 are all made of flexible plastic materials. The annular notch sleeve 3, the lower arc-shaped side plate 5, the upper arc-shaped side plate 6, and the reinforcing column 7 are all made of flexible plastic materials. On the one hand, each component can be deformed under the pull of the pin locking structure 4 to facilitate installation. On the other hand, flexible plastic materials are usually lighter than traditional materials such as metals, so the weight of the protective structure can be reduced, reducing the increase in the overall weight of the drone, which is conducive to maintaining the performance and endurance of the aircraft;

[0022] A plurality of reinforcing columns 7 are fixed at the edge of the top of the lower arc-shaped side plate 5, and the top of the reinforcing column 7 is fixedly connected to the bottom of the upper arc-shaped side plate 6. The structural stability and structural strength between the lower arc-shaped side plate 5 and the upper arc-shaped side plate 6 are improved by a plurality of reinforcing columns 7, so that the entire protective structure is more complete and firm.

[0023] A plurality of hollow portions 801 are provided on the outer wall of the side cover 8, and the hollow portions 801 can reduce the impact on the flight performance of the UAV, reduce aerodynamic resistance, and improve flight stability;

[0024] The three-point calibration structure 9 includes a baffle 902 fixed to one end of the surface of the leg column 2, three equidistant protrusions 901 installed on the inner edge of the top of the upper arc-shaped side plate 6, and an upper groove 903 provided inside the baffle 902 for plugging with the protrusion 901. When the annular notch sleeve 3, the lower arc-shaped side plate 5 and other components are moved upward, the staff aligns the protrusion 901 with the upper groove 903, so as to facilitate the adjustment of the positions of the side cover 8, the reinforcing column 7 and other components;

[0025] The pin locking structure 4 includes a first locking sleeve 401 and a second locking sleeve 402 fixed on the outer walls on both sides of the annular notch sleeve 3, and a main solid column 403 and a secondary solid column 404 fixed inside the first locking sleeve 401 and the second locking sleeve 402. The main solid column 403 and the secondary solid column 404 are both provided with internal threaded holes, and a positioning bolt 405 for threaded cooperation with the main solid column 403 is installed on the outer wall of one side of the secondary solid column 404. When the top surface of the upper arc-shaped side plate 6 contacts the bottom surface of the reinforcing column 7, the staff continuously screws the positioning bolt 405, and uses the positioning bolt 405 to tighten the secondary solid column 404 and the main solid column 403, so that the two are constantly approaching, and then the annular notch sleeve 3 is tightened and tightly connected to the leg column 2, making the installation of the protective structure simpler and more convenient, without the need for complicated tools or steps, thereby reducing the difficulty of its installation.

[0026] When the embodiment of the present application is in use, the staff first takes out the protective structure, and puts the annular notch sleeve 3 onto the leg column 2, and continuously moves the annular notch sleeve 3 upward until the upper arc-shaped side plate 6 and the leg column 2 complete the preliminary calibration connection through the three-point calibration structure 9. At this time, under the limiting action of the three-point calibration structure 9, the lower arc-shaped side plate 5, the upper arc-shaped side plate 6, and the side cover 8 will be on the side away from the drone body, and the side cover 8 and the upper arc-shaped side plate 6 are located on one side of the rotor arm 1 and the rotor. Then the staff uses the pin locking structure 4 to continuously tighten the annular notch sleeve 3 and make the annular notch sleeve 3 stably hold the leg column 2, so that the pin locking structure 4 fixes and limits the annular notch sleeve 3 and the leg column 2. In this protective structure, the structural design of the lower arc-shaped side plate 5 and the upper arc-shaped side plate 6 extends the planar protection range of the rotor, and the side cover 8 can provide protection in three-dimensional space, covering more areas of the rotor that may be damaged, thereby protecting the rotor in all directions and effectively reducing the risk of rotor collision or other accidents.

Claims

1. A rotor protection structure for an unmanned aerial vehicle, characterized in that: The invention comprises a rotorcraft arm (1) and a leg column (2) installed at one end of the rotorcraft arm (1) near a propeller, wherein the rotorcraft arm (1) and the leg column (2) are in a vertical structure, and an annular notch sleeve (3) is detachably installed on one end of the surface of the leg column (2), and a lower arc-shaped side plate (5) and an upper arc-shaped side plate (6) are fixed on the outer wall of the annular notch sleeve (3) on a side away from the rotorcraft arm (1), a three-point calibration structure (9) is arranged between the top end of the upper arc-shaped side plate (6) and the surface of the leg column (2), and a side cover (8) coaxial with the upper arc-shaped side plate (6) is fixed at the edge position of the top end of the upper arc-shaped side plate (6).

2. The rotor protection structure for a drone according to claim 1, characterized in that: The annular notched sleeve (3), the lower arc-shaped side plate (5), the upper arc-shaped side plate (6), and the side cover (8) are all made of flexible plastic components.

3. The rotor protection structure for a drone according to claim 1, characterized in that: A plurality of reinforcing columns (7) are fixed at the edge of the top end of the lower arc-shaped side plate (5), and the top end of the reinforcing columns (7) is fixedly connected to the bottom end of the upper arc-shaped side plate (6).

4. The rotor protection structure for a drone according to claim 1, characterized in that: A plurality of hollow portions (801) are provided on the outer wall of the side cover (8).

5. The rotor protection structure for a drone according to claim 1, characterized in that: The three-point calibration structure (9) comprises a baffle (902) fixed to one end of the surface of the leg column (2), three equidistant protrusions (901) mounted on the inner edge of the top end of the upper arc-shaped side plate (6), and an upper groove (903) provided inside the baffle (902) and used for plugging into the protrusion (901).

6. The rotor protection structure for a drone according to claim 1, characterized in that: A pin locking structure (4) for tightening the annular notch sleeve (3) is provided on one side close to the rotorcraft arm (1).

7. The rotor protection structure for a drone according to claim 6, characterized in that: The pin locking structure (4) comprises a first locking sleeve (401) and a second locking sleeve (402) fixed on the outer walls of both sides of the annular notch sleeve (3), and a main solid column (403) and a secondary solid column (404) fixed inside the first locking sleeve (401) and the second locking sleeve (402), wherein the main solid column (403) and the secondary solid column (404) are both provided with internal threaded holes inside, and a positioning bolt (405) for threaded cooperation with the main solid column (403) is installed on the outer wall of one side of the secondary solid column (404).

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