Air inlet protection structure of fixed-wing unmanned aerial vehicle

Abstract

The utility model discloses an air inlet protection structure of a fixed-wing unmanned aerial vehicle, and relates to the technical field of fixed-wing unmanned aerial vehicles, the air inlet protection structure comprises a fixed-wing unmanned aerial vehicle main body and a protection net, one end of the bottom of the fixed-wing unmanned aerial vehicle main body is provided with an air inlet, and an opening of the air inlet is embedded with a structure frame; the protective net is installed in the structural frame, and a damp-proof plate is arranged on one side of the protective net. According to the air inlet protection structure of the fixed-wing unmanned aerial vehicle, the protection net and the moisture-proof plate are installed at the air inlet through the structural frame, and therefore the situation that foreign matter enters the interior of the fixed-wing unmanned aerial vehicle body or unnecessary liquid enters the fixed-wing unmanned aerial vehicle body due to damp can be avoided as much as possible; according to the fixed-wing unmanned aerial vehicle, structural support connected to the surface of the fixed-wing unmanned aerial vehicle body is provided, meanwhile, the flexibility of the structure can be utilized, dismounting or mounting is facilitated, and effective convenience is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fixed-wing unmanned aircraft, in particular to an air inlet protection structure of a fixed-wing unmanned aircraft. Background Art

[0002] Fixed-wing UAVs are equipment used in surveying and mapping, geology, petroleum, agriculture and forestry, etc. Fixed-wing UAVs are fixed-wing UAVs whose wing sweep angle can be adjusted automatically or manually with speed. Due to its excellent functions and modular integration, it has been widely used in surveying and mapping, geology, petroleum, agriculture and forestry, etc., and has a broad market application prospect;

[0003] Conventional fixed-wing unmanned aircraft have an air intake structure on the surface of the fuselage structure. The air intake is an opening of an air duct or similar structure. It collects air by using the forward movement of the unmanned aircraft and guides it to the engine or ventilator. It is also to reduce wind resistance during flight.

[0004] However, since the air inlet structure is connected to the driving device inside the UAV, in order to ensure the safety of the internal structure of the UAV during storage and static operation, a protective structure needs to be set at the air inlet to provide protection for the internal structure of the aircraft. Conventionally, waterproof cloth or similar materials are used to cover and protect it, but this method is difficult to block moisture, making the structural parts in the air inlet prone to moisture damage.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and an air intake protection structure for a fixed-wing unmanned aircraft is proposed. Utility Model Content

[0006] The utility model aims to provide an air inlet protection structure for a fixed-wing unmanned aircraft to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air inlet protection structure for a fixed-wing unmanned aircraft, comprising a fixed-wing unmanned aircraft body and a protection net, an air inlet is arranged at one end of the bottom of the fixed-wing unmanned aircraft body, a guide plate is horizontally installed at the bottom of the opening of the air inlet, a structural frame is inlaid and installed at the opening of the air inlet, connecting frames are installed at the upper ends of the left and right sides of the structural frame, and a support frame is installed on the top of the connecting frame, a connecting hole is opened at the position where the support frame is connected to the surface of the fixed-wing unmanned aircraft body, the protection net is installed inside the structural frame, and a moisture-proof plate is arranged on one side of the protection net.

[0008] Furthermore, the guide plate and the air inlet are arranged in an integrated structure, and the guide plate extends horizontally to the outside of the opening of the air inlet.

[0009] Furthermore, the structural frame includes a U-shaped frame, fixing holes and fixing bars. The upper ends of the left and right sides of the U-shaped frame are both provided with fixing holes, and the left and right inner walls of the U-shaped frame are both connected with fixing bars.

[0010] Furthermore, the structural dimensions of the U-shaped frame match the structural dimensions of the inner wall of the air inlet, and the U-shaped frame fits onto the inner wall surface of the air inlet.

[0011] Furthermore, the fixing bar is arranged in a "T"-shaped structure and is horizontally connected to the inner wall surface of the U-shaped frame, and the U-shaped frame and the fixing bar are arranged in an integrated structure, and the left and right sides of the protective net and the moisture-proof board are provided with groove structures that match the fixing bar structure.

[0012] Furthermore, the connecting frame includes a support rod, a shock absorbing block, a connecting pile and a fixing bolt. The top end of the support rod is connected to the shock absorbing block, and the bottom end of the shock absorbing block is connected to the connecting pile, and the fixing bolt is horizontally installed at the diagonal of the connecting pile.

[0013] Furthermore, the support frame includes a stabilizing rod, a shock-absorbing pile, a stabilizing bolt, a docking pile and a docking bolt. The top of the stabilizing rod is connected to the shock-absorbing pile, and the diagonal part of the shock-absorbing pile is horizontally penetrated by a stabilizing bolt connected to the bottom end. The lower end of the stabilizing rod is installed, and the diagonal part of the docking pile is vertically penetrated by a docking bolt.

[0014] Furthermore, the shock-absorbing pile is threadedly connected to the connecting hole, the docking bolt is threadedly connected to the docking pile and the shock-absorbing block respectively, and the fixing bolt is threadedly connected to the connecting pile, the U-shaped frame and the fixing hole respectively.

[0015] The utility model provides an air inlet protection structure for a fixed-wing unmanned aircraft, which has the following beneficial effects:

[0016] 1. The utility model, by slidingly installing a protective net and a moisture-proof plate in the middle of a structural frame, utilizes fixing strips on the left and right inner wall surfaces of the U-shaped frame, and a protective net and a moisture-proof plate with a groove structure matching the structure, and by using this structure in cooperation, the protective net and the moisture-proof plate can be slidably inserted in the middle of the U-shaped frame in a horizontal direction. By using the above structure, the inside of the air inlet at the bottom of the main body of the fixed-wing unmanned aircraft can be prevented as much as possible from foreign objects entering when it is stored statically, or the internal equipment being damaged by moisture. In addition, since the structure of the U-shaped frame can fit the inner wall surface of the air inlet, the tightness of the structural docking is guaranteed, thereby providing effective structural protection for the inside of the air inlet.

[0017] 2. The utility model provides support frames and connecting frames at both ends of the structural frame, and at the same time, provides connecting holes on the surface of the fixed-wing unmanned aircraft body, connects and fixes the connecting piles to the U-shaped frame using fixing bolts, then connects and fixes the docking piles and the shock-absorbing blocks using fixing bolts, and finally connects and fixes the shock-absorbing piles to the connecting holes on the surface of the fixed-wing unmanned aircraft body using stabilizing bolts. By using the above structure, the structural frame can be stably fixed and supported at the opening of the air inlet, so as to provide effective structural installation for the protective net and the moisture-proof board, and provide structural protection for the interior of the air inlet. In addition, the use of the above structure also makes the various structural parts have flexible disassembly and assembly, which is convenient for use and storage.

[0018] 3. The utility model sets the structure of the U-shaped frame to be the same as the structure of the air inlet opening, so that after the structural frame is fixed at the opening of the air inlet, an extended structure at the opening of the air inlet is formed. By using this structure, the wind resistance of the structural parts can be reduced as much as possible during the operation and flight of the fixed-wing unmanned aircraft body. At the same time, the protective net installed in the middle of the U-shaped frame through the fixing strip, and the fixing strip of the "T"-shaped structure is used. Even during the flight of the fixed-wing unmanned aircraft body, the wind pressure can be used to press the protective net in the middle of the U-shaped frame without causing the structure to fall off. While minimizing the influence on the airflow in the air inlet, the protective net is prevented from causing unnecessary influence on the air inlet as much as possible. At the same time, with the structural dimensions of the connecting frame and the supporting frame, it is possible to protect the inside of the air inlet in a static state and provide a certain degree of protection in a flying state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the side view of the main body of an air inlet protection structure of a fixed-wing unmanned aircraft according to the utility model;

[0020] Figure 2 This is a schematic diagram of the connection hole structure of the air inlet protection structure of a fixed-wing unmanned aircraft according to the utility model;

[0021] Figure 3 This is a three-dimensional structural schematic diagram of a support frame of an air inlet protection structure of a fixed-wing unmanned aircraft according to the utility model;

[0022] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of a structural frame and a connecting frame of an air inlet protection structure of a fixed-wing unmanned aircraft.

[0023] In the figure: 1. fixed-wing unmanned aircraft body; 2. air inlet; 3. guide plate; 4. structural frame; 401. U-shaped frame; 402. fixing hole; 403. fixing strip; 5. connecting frame; 501. support rod; 502. shock-absorbing block; 503. connecting pile; 504. fixing bolt; 6. supporting frame; 601. stabilizing rod; 602. shock-absorbing pile; 603. stabilizing bolt; 604. connecting pile; 605. connecting bolt; 7. connecting hole; 8. protective net; 9. moisture-proof board. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] like Figures 1 to 4 As shown, an air inlet protection structure of a fixed-wing unmanned aircraft comprises a fixed-wing unmanned aircraft body 1 and a protection net 8, wherein an air inlet 2 is arranged at one end of the bottom of the fixed-wing unmanned aircraft body 1, and a guide plate 3 is horizontally installed at the bottom of the opening of the air inlet 2, and a structural frame 4 is inlaid and installed at the opening of the air inlet 2, and connecting frames 5 are installed at the upper ends of the left and right sides of the structural frame 4, and a support frame 6 is installed on the top of the connecting frame 5, a connecting hole 7 is provided at the position where the support frame 6 is connected to the surface of the fixed-wing unmanned aircraft body 1, the protection net 8 is installed inside the structural frame 4, and a moisture-proof plate 9 is provided on one side of the protection net 8, and the protection net 8 and the moisture-proof plate 9 are slidably installed in the middle of the structural frame 4, and the fixing bars 403 on the left and right inner wall surfaces of the U-shaped frame 401, and the protection net 8 and the moisture-proof plate 9 with a groove structure matching the same are used, and the protection net 8 and the moisture-proof plate 9 can be slidably inserted in the middle of the U-shaped frame 401 in the horizontal direction by using the cooperative use of this structure.

[0026] like Figures 1 to 4As shown, the guide plate 3 and the air inlet 2 are arranged in an integrated structure, and the guide plate 3 extends horizontally to the outside of the opening of the air inlet 2. The structural frame 4 includes a U-shaped frame 401, a fixing hole 402 and a fixing strip 403. The upper ends of the left and right sides of the U-shaped frame 401 are provided with fixing holes 402, and the left and right inner walls of the U-shaped frame 401 are connected with fixing strips 403. The structural dimensions of the U-shaped frame 401 match the structural dimensions of the inner wall of the air inlet 2, and the U-shaped frame 401 is attached to the inner wall surface of the air inlet 2. The fixing strip 403 is arranged in a "T" shape and is horizontally connected to The inner wall surface of the U-shaped frame 401, and the U-shaped frame 401 and the fixing strip 403 are arranged in an integrated structure, and the left and right sides of the protective net 8 and the moisture-proof plate 9 are provided with a groove structure matching the structure of the fixing strip 403. By setting the structure of the U-shaped frame 401 to the same structure as the structure at the opening of the air inlet 2, the structural frame 4 is fixed at the opening of the air inlet 2, thereby forming the shape of an extended structure at the opening of the air inlet 2. By using this structure, it is possible to reduce the wind resistance of the structural parts as much as possible even during the operation and flight of the fixed-wing unmanned aircraft body 1.

[0027] like Figures 1 to 4 As shown, the connecting frame 5 includes a support rod 501, a shock absorbing block 502, a connecting pile 503 and a fixing bolt 504. The top of the support rod 501 is connected to the shock absorbing block 502, and the bottom of the shock absorbing block 502 is connected to the connecting pile 503, and the fixing bolt 504 is horizontally installed at the diagonal of the connecting pile 503. The support frame 6 includes a stabilizing rod 601, a shock absorbing pile 602, a stabilizing bolt 603, a docking pile 604 and a docking bolt 605. The top of the stabilizing rod 601 is connected to the shock absorbing pile 602, and the diagonal of the shock absorbing pile 602 is horizontally penetrated by the stabilizing bolt 603 connected to the bottom, and the lower end of the stabilizing rod 601 is installed with a docking pile 60 4, and a docking bolt 605 is vertically penetrated at the diagonal of the docking pile 604, the shock-absorbing pile 602 is threadedly connected with the connecting hole 7, the docking bolt 605 is threadedly connected with the docking pile 604 and the shock-absorbing block 502 respectively, the fixing bolt 504 is threadedly connected with the connecting pile 503, the U-shaped frame 401, and the fixing hole 402 respectively, the connecting pile 503 is connected and fixed with the U-shaped frame 401 by the fixing bolt 504, and then the docking pile 604 and the shock-absorbing block 502 are connected and fixed by the fixing bolt 504, and finally the shock-absorbing pile 602 is connected and fixed with the connecting hole 7 on the surface of the fixed-wing unmanned aircraft body 1 by the stabilizing bolt 603.

[0028] In summary, if Figures 1 to 4As shown, when the air inlet protection structure of the fixed-wing unmanned aircraft is used, when the protection net 8 and the moisture-proof plate 9 need to be used and installed, first, the shock-absorbing pile 602 at the upper end of the stabilizing rod 601 is attached to the surface of the fixed-wing unmanned aircraft body 1 with the connecting hole 7, and then the support frame 6 is fixed to the surface of the fixed-wing unmanned aircraft body 1 using the stabilizing bolt 603;

[0029] Then, the shock absorbing block 502 at the upper end of the support rod 501 is connected to the docking pile 604 at the lower end of the stabilizing rod 601, and the connecting frame 5 and the support frame 6 are connected and fixed using the docking bolts 605;

[0030] Next, the U-shaped frame 401 is inserted into the opening of the air inlet 2, and then the end with the fixing hole 402 is placed opposite to the connecting pile 503, and the structural frame 4 and the connecting frame 5 are connected and fixed using the fixing bolts 504. Finally, as needed, the protective net 8 and the moisture-proof plate 9 are slidably inserted into the surface of the fixing strip 403 using the groove structure on both sides, thereby effectively protecting the air inlet 2.

[0031] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An air inlet protection structure for a fixed-wing unmanned aircraft, comprising a fixed-wing unmanned aircraft body (1) and a protection net (8), characterized in that: An air inlet (2) is provided at one end of the bottom of the fixed-wing unmanned aircraft body (1), and a guide plate (3) is horizontally installed at the bottom of the opening of the air inlet (2), and a structural frame (4) is embedded and installed at the opening of the air inlet (2), and connecting frames (5) are installed at the upper ends of the left and right sides of the structural frame (4), and a supporting frame (6) is installed on the top of the connecting frame (5), and a connecting hole (7) is opened at the position where the supporting frame (6) is connected on the surface of the fixed-wing unmanned aircraft body (1), and the protective net (8) is installed inside the structural frame (4), and a moisture-proof plate (9) is provided on one side of the protective net (8).

2. The air inlet protection structure of a fixed-wing unmanned aircraft according to claim 1, characterized in that: The guide plate (3) and the air inlet (2) are arranged in an integrated structure, and the guide plate (3) extends horizontally to the outside of the opening of the air inlet (2).

3. The air inlet protection structure of a fixed-wing unmanned aircraft according to claim 1, characterized in that: The structural frame (4) comprises a U-shaped frame (401), a fixing hole (402) and a fixing bar (403); the fixing holes (402) are provided at the upper ends of the left and right sides of the U-shaped frame (401), and the fixing bars (403) are connected to the left and right inner walls of the U-shaped frame (401).

4. The air inlet protection structure of a fixed-wing unmanned aircraft according to claim 3, characterized in that: The structural dimensions of the U-shaped frame (401) match the structural dimensions of the inner wall of the air inlet (2), and the U-shaped frame (401) fits onto the inner wall surface of the air inlet (2).

5. The air inlet protection structure of a fixed-wing unmanned aircraft according to claim 3, characterized in that: The fixing bar (403) is arranged in a "T"-shaped structure and is horizontally connected to the inner wall surface of the U-shaped frame (401), and the U-shaped frame (401) and the fixing bar (403) are arranged in an integrated structure, and the left and right sides of the protective net (8) and the moisture-proof plate (9) are provided with groove structures matching the structure of the fixing bar (403).

6. The air inlet protection structure of a fixed-wing unmanned aircraft according to claim 3, characterized in that: The connecting frame (5) comprises a supporting rod (501), a shock absorbing block (502), a connecting pile (503) and a fixing bolt (504); the top end of the supporting rod (501) is connected to the shock absorbing block (502), the bottom end of the shock absorbing block (502) is connected to the connecting pile (503), and the fixing bolt (504) is horizontally installed at the diagonal of the connecting pile (503).

7. The air inlet protection structure of a fixed-wing unmanned aircraft according to claim 6, characterized in that: The support frame (6) comprises a stabilizing rod (601), a shock-absorbing pile (602), a stabilizing bolt (603), a docking pile (604) and a docking bolt (605); the top end of the stabilizing rod (601) is connected to the shock-absorbing pile (602), and the diagonal part of the shock-absorbing pile (602) is horizontally penetrated by a stabilizing bolt (603) connected to the bottom end; the lower end of the stabilizing rod (601) is installed with a docking pile (604), and the diagonal part of the docking pile (604) is vertically penetrated by a docking bolt (605).

8. The air inlet protection structure of a fixed-wing unmanned aircraft according to claim 7, characterized in that: The shock-absorbing pile (602) is threadedly connected to the connecting hole (7), the docking bolt (605) is threadedly connected to the docking pile (604) and the shock-absorbing block (502), and the fixing bolt (504) is threadedly connected to the connecting pile (503), the U-shaped frame (401), and the fixing hole (402).

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