Paddle limiting device for unmanned aerial vehicle

Abstract

The utility model discloses a blade limiting device for an unmanned aerial vehicle, which relates to the technical field of blade limiting equipment, comprises a vehicle arm arranged on the surface of a vehicle body and a blade body arranged above the vehicle arm, and is characterized in that a mounting plate is arranged below the vehicle arm, and connecting pipes are symmetrically arranged at the top end of the mounting plate; first sliding grooves are symmetrically formed in the inner wall of the connecting pipe. According to the utility model, the left and right rotation of the paddle can be limited through the connecting pipe, the connecting rod, the protective cover and the like, so that the damage to the paddle and the influence on subsequent use caused by long-time vibration during transportation are avoided, and meanwhile, through a switch in the connecting pipe, an extrusion rod below the connecting rod, a buzzer, a power supply and the like, the safety of the paddle is improved. And when the protective cover is extruded, the connecting rod and the extrusion rod can be driven to move towards the surface of the switch, so that the switch is extruded to be turned on, and the buzzer can work to remind personnel that the blades of the unmanned aerial vehicle are extruded, so that the blades are prevented from being extruded and damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of blade limiting devices, in particular to a blade limiting device for an unmanned aerial vehicle (UAV). Background Art

[0002] An unmanned aerial vehicle (UAV) is a general term for an unmanned aircraft, which is an unmanned aircraft controlled by a radio remote control device and a self - contained program control device. A blade is a device that rotates in air or water to convert the rotational power of an engine into propulsion force. It can have two or more blades connected to a hub. The back side of the blade is a helical surface or a surface approximately helical. Currently, when a UAV is transported, it may vibrate during transportation, causing the propeller to shake, which easily leads to damage of the blade during long - term shaking, thus affecting the subsequent normal use of the UAV. Content of the Utility Model

[0003] The utility model provides a blade limiting device for an unmanned aerial vehicle, which solves the problems in the background art.

[0004] In order to achieve the above - mentioned purpose, the utility model adopts the following technical scheme:

[0005] A blade limiting device for an unmanned aerial vehicle includes an arm disposed on the surface of the fuselage and a blade body disposed above the arm. It is characterized in that: an installation plate is disposed below the arm, and connecting pipes are symmetrically disposed at the top end of the installation plate. First chutes are symmetrically opened on the inner wall of the connecting pipe, and first sliders are slidably connected inside the first chutes. One side of the first slider is connected to a connecting plate. A spring is connected to the bottom end of the connecting plate, and a connecting rod is connected to the top end of the connecting plate. One side of the connecting rod is connected to a protective cover for limiting the blade body.

[0006] As a further description of the above - mentioned technical scheme:

[0007] The protective cover has the same length and width as the blade body, and the internal height of the protective cover is greater than the height of the blade body.

[0008] As a further description of the above - mentioned technical scheme:

[0009] An extrusion rod is disposed at the bottom end of the connecting plate. A switch in contact with the extrusion rod is installed at the bottom end inside the connecting pipe. A power supply and a buzzer are installed at the top end of the installation plate.

[0010] As a further description of the above - mentioned technical scheme:

[0011] The surface of the connecting pipe is symmetrically provided with moving grooves, and an annular plate is threadedly connected to the surface of the connecting pipe. A second sliding groove is provided on the inner wall of the annular plate, and a second sliding block is slidably connected inside the second sliding groove. One side of the second sliding block is connected with a baffle plate.

[0012] As a further description of the above technical solution:

[0013] The top end of the mounting plate is movably sleeved with a U-shaped plate, and the U-shaped plate passes through the mounting plate and is connected with a nut.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0015] In the present utility model, by arranging the connecting pipe, the connecting rod and the protective cover, etc., the left and right rotation of the blade can be limited, avoiding the damage of the blade caused by long-time vibration during transportation, affecting the subsequent use. At the same time, through the switch inside the connecting pipe, the extrusion rod below the connecting rod, the buzzer and the power supply, etc., when the protective cover is squeezed, the connecting rod and the extrusion rod can be driven to move towards the surface of the switch, so as to squeeze the switch to open it, enabling the buzzer to work, so as to remind the personnel that the blade of the drone is squeezed and avoid the damage of the blade due to extrusion. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a device for limiting the blades of a drone;

[0017] Figure 2 It is a schematic diagram of a partial structure on the surface of the mounting plate in the present utility model;

[0018] Figure 3 It is a schematic diagram of a partial structure at the bottom end of the mounting plate in the present utility model;

[0019] Figure 4 It is a schematic diagram of a partial structure inside the connecting pipe in the present utility model;

[0020] Figure 5 It is a schematic diagram of a partial structure inside the annular plate in the present utility model.

[0021] Legend Explanation:

[0022] Airframe; 2, Arm; 3, Blade body; 4, Mounting plate; 5, Connecting pipe; 6, First sliding groove; 7, First sliding block; 8, Connecting plate; 9, Spring; 10, Connecting rod; 11, Protective cover; 12, Extrusion rod; 13, Switch; 14, Buzzer; 15, Power supply; 16, Moving groove; 17, Annular plate; 18, Second sliding groove; 19, Second sliding block; 20, Baffle plate; 21, U-shaped plate; 22, Nut. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Referring to Figures 1 - 5 , a blade limiting device for a drone, which includes an arm 2 arranged on the surface of the fuselage 1 and a blade body 3 arranged above the arm 2. An installation plate 4 is arranged below the arm 2, and connecting pipes 5 are symmetrically arranged at the top end of the installation plate 4. First chutes 6 are symmetrically opened on the inner wall of the connecting pipes 5, and first sliders 7 are slidably connected inside the first chutes 6. One side of the first slider 7 is connected to a connecting plate 8. A spring 9 is connected to the bottom end of the connecting plate 8, and a connecting rod 10 is connected to the top end of the connecting plate 8. A protective cover 11 for limiting the blade body 3 is connected to one side of the connecting rod 10. During transportation, the U-shaped plate 21 can be passed through the arm 2 and the installation plate 4, and the nut 22 can be rotated from the bottom end of the U-shaped plate 21 to the bottom end of the installation plate 4 to facilitate fixing the installation plate 4 and the like on the surface of the arm 2. The annular plate 17 can also be rotated to drive the baffle 20 to move downward inside the connecting pipe 5, so as to move the baffle 20 to the top end of the connecting plate 8 and continue to move downward. The connecting plate 8 can drive the connecting rod 10 and the protective cover 11 to move downward, and the protective cover 11 can be moved to the top end of the blade body 3 to limit it, avoiding the phenomenon of rotation or shaking. At the same time, when the protective cover 11 and the blade are squeezed, the protective cover 11 drives the connecting rod 10, the connecting plate 8 and the extrusion rod 12 to move downward, so as to move the extrusion rod 12 to the surface of the switch 13 to turn it on, and the buzzer 14 works, which can play a role in reminding people.

[0025] Furthermore, the length and width of the protective cover 11 are the same as those of the blade body 3, and the internal height of the protective cover 11 is greater than the height of the blade body 3. The same length and width can prevent the blade body 3 from rotating, and the internal height of the protective cover 11 being greater than the height of the blade body 3 is to facilitate the protective cover 11 to have space to move downward, so that the extrusion rod 12 can move to the surface of the switch 13.

[0026] Furthermore, an extrusion rod 12 is provided at the bottom end of the connecting plate 8, a switch 13 in contact with the extrusion rod 12 is installed at the inner bottom end of the connecting pipe 5, a power supply 15 and a buzzer 14 are installed at the top end of the mounting plate 4, the power supply 15 is connected to the switch 13, and the switch 13 is connected to the buzzer 14. When the protective cover 11 is extruded and moves to the surface of the blade, the connecting rod 10 on one side of the protective cover 11 can drive the connecting plate 8 and the extrusion rod 12 to move downward, so that the extrusion rod 12 can be moved to the surface of the switch 13 to turn it on, facilitating the power supply 15 to supply power to the buzzer 14 and make it work, thereby reminding personnel that the blades of the drone are being extruded.

[0027] Furthermore, moving grooves 16 are symmetrically formed on the surface of the connecting pipe 5, and an annular plate 17 is threadedly connected to the surface of the connecting pipe 5. A second sliding groove 18 is formed on the inner wall of the annular plate 17, and a second sliding block 19 is slidably connected to the inside of the second sliding groove 18. One side of the second sliding block 19 is connected to a baffle 20. As Figure 5 shown, an installation rod is provided on one side of the second sliding block 19, and the installation rod is connected to the surface of the baffle 20. The installation rod passes through the moving groove 16 and contacts the baffle 20. The baffle 20 is located inside the connecting pipe 5 and above the connecting plate 8. It is convenient to rotate the annular plate 17 to make it rotate and move on the surface of the connecting pipe 5, so that the annular plate 17 can rotate on the surface of the second sliding block 19 through the second sliding groove 18, and drive the installation rod and the baffle 20 to move, so that the baffle 20 can be moved to a specified position on the connecting plate 8, that is, the distance between the inner top end of the protective cover 11 and the blade is the same as the distance between the extrusion rod 12 at the bottom end of the connecting plate 8 and the switch 13. When the protective cover 11 is extruded to the surface of the blade, the connecting rod 10 can drive the connecting plate 8 and the extrusion rod 12 to move downward, and move the extrusion rod 12 to the surface of the switch 13 to turn on the buzzer 14. At the same time, the baffle 20 can also limit the connecting plate 8 to prevent the spring 9 from moving the connecting plate 8, the connecting rod 10 and the protective cover 11 away from the top end of the blade.

[0028] Furthermore, a U-shaped plate 21 is movably sleeved on the top end of the mounting plate 4, and the U-shaped plate 21 passes through the mounting plate 4 and is connected with a nut 22. It is convenient for the U-shaped plate 21 to pass through the machine arm 2 and the mounting plate 4, and contact the bottom end of the U-shaped plate 21 through the nut 22, so as to fix the mounting plate 4 on the surface of the machine arm 2.

[0029] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A limiting device for a drone blade, comprising an arm (2) arranged on the surface of the fuselage (1) and a blade body (3) arranged above the arm (2), characterized in that: A mounting plate (4) is provided below the machine arm (2), and connecting pipes (5) are symmetrically arranged at the top end of the mounting plate (4). First sliding grooves (6) are symmetrically formed in the inner wall of the connecting pipe (5), and first sliding blocks (7) are slidably connected inside the first sliding grooves (6). One side of the first sliding block (7) is connected with a connecting plate (8). A spring (9) is connected to the bottom end of the connecting plate (8), and a connecting rod (10) is connected to the top end of the connecting plate (8). One side of the connecting rod (10) is connected with a protective cover (11) for limiting the blade body (3).

2. The a kind of drone blade limiting device according to claim 1, characterized in that: The protective cover (11) has the same length and width as the blade body (3), and the internal height of the protective cover (11) is greater than the height of the blade body (3).

3. The a kind of blade limiting device for unmanned aerial vehicle according to claim 1, characterized in that: An extrusion rod (12) is arranged at the bottom end of the connecting plate (8). A switch (13) in contact with the extrusion rod (12) is installed at the bottom end inside the connecting pipe (5). A power supply (15) and a buzzer (14) are installed at the top end of the mounting plate (4).

4. The a kind of blade limiting device for unmanned aerial vehicle according to claim 1, characterized in that: Moving grooves (16) are symmetrically formed on the surface of the connecting pipe (5), and an annular plate (17) is threadedly connected to the surface of the connecting pipe (5). A second sliding groove (18) is formed in the inner wall of the annular plate (17), and a second sliding block (19) is slidably connected inside the second sliding groove (18). One side of the second sliding block (19) is connected with a baffle (20).

5. The a kind of drone blade limiting device according to claim 1, characterized in that: A U-shaped plate (21) is movably sleeved at the top end of the mounting plate (4), and the U-shaped plate (21) passes through the mounting plate (4) and is connected with a nut (22).

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