Novel multi-rotor unmanned aerial vehicle aircraft

Abstract

The utility model relates to the technical field of multi-rotor unmanned aerial vehicles, in particular to a novel multi-rotor unmanned aerial vehicle aircraft which comprises an unmanned aerial vehicle body, four wing rods are arranged on the outer wall of the unmanned aerial vehicle body 1, one end of each wing rod is fixedly connected with a mounting block, the tops of the four mounting blocks are rotationally connected with rotating rods, and the rotating rods are connected with the rotating rods. Blades are mounted at the top ends of the rotating rods, protective rings are arranged on the outer walls, close to the blades, of the tops of the mounting blocks, supporting plates are fixedly connected between the inner walls of the protective rings, the outer walls of the rotating rods penetrate through the tops of the supporting plates, and replacing mechanisms used for disassembling and replacing the protective rings are arranged between the tops of the mounting blocks and the bottoms of the protective rings. Compared with the prior art, independent replacement of the protection ring is achieved, disassembly of the whole machine shell is avoided, replacement is convenient, the maintenance efficiency is improved, the maintenance cost can be effectively reduced, the operation efficiency is improved, the rapid maintenance requirement of the unmanned aerial vehicle in the high-frequency and complex environment is met, and good practicability and popularization value are achieved.

Description

Technical Field

[0001] This utility model relates to the field of multi-rotor unmanned aerial vehicle (UAV) technology, and in particular to a novel multi-rotor UAV aircraft. Background Technology

[0002] Multirotor drones, as aircraft driven by multiple propellers, are widely used in various fields such as agricultural plant protection, power line inspection, emergency rescue, geographic surveying, and logistics transportation. Existing multirotor drones typically include a frame, multiple rotor assemblies, a battery module, a flight control system, and a mission payload platform, achieving flight maneuvers such as vertical takeoff and landing, hovering, turning, and navigation through multirotor coordinated control.

[0003] Existing multi-rotor drones typically have fixed protective covers around the rotor blades to prevent foreign objects from being entrained or the blades from colliding with external objects during flight. However, these protective covers are often integrally molded with the fuselage or rigidly fixed with screws. Once damaged or deformed, they cannot be disassembled and replaced separately, often requiring the replacement of the entire drone shell. This cumbersome process not only increases maintenance costs but also extends maintenance cycles, affecting the drone's efficiency and mission continuity, making it difficult to adapt to the needs of high-frequency operations and complex operating environments. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a new type of multi-rotor drone aircraft to solve the problem that existing protective covers are mostly integrally formed with the fuselage shell or rigidly fixed by screws, and once damaged or deformed, they cannot be disassembled and replaced separately, often requiring the replacement of the entire drone shell.

[0005] To achieve the above objectives, this utility model provides a novel multi-rotor unmanned aerial vehicle (UAV), comprising a UAV body. Four wing rods are provided on the outer wall of the UAV body. One end of each of the four wing rods is fixedly connected to a mounting block. A rotating rod is rotatably connected to the top of each of the four mounting blocks. A propeller is mounted on the top of each rotating rod. A protective ring is provided on the outer wall of each mounting block near the propeller. A support plate is fixedly connected between the inner walls of the protective rings. The outer wall of the rotating rod penetrates the top of the support plate. A replacement mechanism for disassembling and replacing the protective ring is provided between the top of the mounting block and the bottom of the protective ring.

[0006] Preferably, the replacement mechanism includes a first limiting ring fixedly connected to the top of the rotating rod, a connecting block fixedly connected to the bottom of the support plate, the connecting block being sleeved on the outer wall of the rotating rod, a second limiting ring fixedly connected to the bottom of the connecting block, observation holes being provided in the middle of the first limiting ring, the connecting block, and the second limiting ring, and opposing limiting blocks being fixedly connected to both sides of the outer walls of the first and second limiting rings, the length of the limiting blocks on both sides of the first limiting ring being longer than that on both sides of the second limiting ring, and slots being provided on the inner walls of the opposing limiting blocks, and locking strips being fixedly connected to both sides of the outer walls of the first and second limiting rings.

[0007] Preferably, the outer walls of both sides of the connecting block are provided with sliding grooves, and a spring is fixedly connected inside the sliding groove. One end of the spring is fixedly connected to a locking post, and one end of the locking post penetrates through the outer wall of the second limiting ring. Limiting holes are provided on the side walls of the limiting blocks on both sides of the outer wall of the first limiting ring, and one end of the locking post penetrates into the limiting hole.

[0008] Preferably, the outer wall of the protective ring has a groove, and the inner wall of the groove is fixedly connected to an anti-collision airbag for buffering when the protective ring collides.

[0009] Preferably, the bottom of each of the four mounting blocks is fixedly connected with a rubber pad for protecting the bottom of the mounting block when the UAV body lands.

[0010] Preferably, one end of the card block strip is arc-shaped and the outer wall of the card block strip is adapted to the inner wall of the card slot.

[0011] Preferably, one end of the locking pin is semi-circular in shape, and when one end of the locking pin is pressed, the locking pin will slide into the groove and compress the spring.

[0012] Preferably, the outer wall of the second limiting ring is provided with an anti-slip groove to increase the friction between the user's hand and the outer wall of the second limiting ring.

[0013] The beneficial effects of this utility model are:

[0014] This novel multi-rotor UAV features a replacement mechanism incorporating a first limiting ring, a second limiting ring, a limiting block, a slot, a block strip, a slide, a spring, a locking pin, and limiting holes. This allows the protective ring to be quickly removed and installed after the propellers are disassembled by pressing the locking pin and rotating the second limiting ring. The entire operation is tool-free and offers advantages such as flexible disassembly and assembly, reliable positioning, and ease of operation. It enables individual replacement of the protective ring, avoiding the disassembly of the entire aircraft casing, facilitating replacement, improving maintenance efficiency, effectively reducing maintenance costs, and enhancing operational efficiency. It meets the rapid maintenance needs of UAVs in high-frequency and complex environments, demonstrating significant practicality and promotional value. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the blade and protective ring of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the protective ring and rubber pad of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the first and second limiting rings of this utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the card column of this utility model.

[0021] The diagram is marked as follows:

[0022] 1. UAV body; 2. Wing rod; 3. Mounting block; 4. Rotating rod; 5. Propeller blade; 6. Protective ring; 7. Support plate; 8. First limiting ring; 9. Connecting block; 10. Second limiting ring; 11. Observation hole; 12. Limiting block; 13. Slot; 14. Block strip; 15. Slide groove; 16. Spring; 17. Locking post; 18. Groove; 19. Anti-collision airbag; 20. Rubber pad; 21. Limiting hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figures 1 to 5 As shown, a novel multi-rotor unmanned aerial vehicle (UAV) includes a UAV body 1. Four wing rods 2 are provided on the outer wall of the UAV body 1. One end of each of the four wing rods 2 is fixedly connected to a mounting block 3. A rotating rod 4 is rotatably connected to the top of each of the four mounting blocks 3. A propeller 5 is mounted on the top of each rotating rod 4. A protective ring 6 is provided on the outer wall of the top of each mounting block 3 near the propeller 5. A support plate 7 is fixedly connected between the inner walls of the protective rings 6. The outer wall of the rotating rod 4 penetrates the top of the support plate 7. A replacement mechanism for disassembling and replacing the protective ring 6 is provided between the top of the mounting block 3 and the bottom of the protective ring 6.

[0026] Further, see attached document. Figures 2 to 5As shown, the replacement mechanism includes a first limiting ring 8 fixedly connected to the top of the rotating rod 4, a connecting block 9 fixedly connected to the bottom of the support plate 7, the connecting block 9 being sleeved on the outer wall of the rotating rod 4, and a second limiting ring 10 fixedly connected to the bottom of the connecting block 9. Observation holes 11 are provided in the middle of the first limiting ring 8, the connecting block 9, and the second limiting ring 10. Limiting blocks 12 are fixedly connected to opposite sides of the outer walls of the first limiting ring 8 and the second limiting ring 10. The length of the limiting blocks 12 on both sides of the first limiting ring 8 is greater than that on both sides of the second limiting ring 10. Slots 13 are provided on the inner walls of the oppositely positioned limiting blocks 12. Both sides of the outer wall of the limiting ring 10 are fixedly connected with a locking strip 14. One end of the locking strip 14 is arc-shaped and the outer wall of the locking strip 14 is adapted to the inner wall of the locking groove 13. Both sides of the outer wall of the connecting block 9 are provided with a sliding groove 15. A spring 16 is fixedly connected inside the sliding groove 15. One end of the spring 16 is fixedly connected with a locking post 17. One end of the locking post 17 passes through the outer wall of the second limiting ring 10. Both sides of the outer wall of the limiting locking blocks 12 of the first limiting ring 8 are provided with limiting holes 21. One end of the locking post 17 passes through the limiting hole 21. One end of the locking post 17 is semi-circular in shape. When one end of the locking post 17 is pressed, the locking post 17 will slide into the sliding groove 15 and compress the spring 16.

[0027] When it is necessary to replace one of the protective rings 6, first remove the blade 5 to avoid damage to the blade 5 during the removal process. Then, the operator presses the locking pins 17 set at both ends of the top of the second limiting ring 10. Under the pressure, the locking pins 17 retract inward along the slide groove 15 and compress the spring 16 at the same time, so that the locking pins 17 exit from the limiting hole 21 on the side wall of the first limiting ring 8, thereby initially releasing the limiting connection relationship between the first limiting ring 8 and the second limiting ring 10.

[0028] After the limiting relationship is released, the outer wall of the second limiting ring 10 continues to rotate. The second limiting ring 10 synchronously drives the limiting blocks 12 set on both sides to rotate. The rotation of the limiting blocks 12 further drives the slots 13 on them to rotate. During the rotation, the slots 13 slide along the outer wall of the block strips 14 set on both sides of the first limiting ring 8. When the slots 13 move to one end of the block strips 14, they completely disengage from the block strips 14, realizing the structural separation between the first limiting ring 8 and the second limiting ring 10, thereby facilitating the removal of the old protective ring 6.

[0029] When replacing the new protective ring 6, make the opposite surfaces of the second limiting ring 10 at the bottom of the protective ring 6 and the first limiting ring 8 come into contact with each other, and adjust them to the position where the limiting block 12 and the block strip 14 intersect. Continue to rotate the outer wall of the second limiting ring 10, so that it drives the limiting block 12 to rotate. The limiting block 12 further drives the slot 13 to move, so that the slot 13 re-engages on the outer wall of the block strip 14. When the locking post 17 is aligned with the limiting hole 21 on the side wall of the first limiting ring 8 to the same horizontal position, under the elastic force of the spring 16, the locking post 17 automatically springs into the limiting hole 21, thereby completing the limiting and fixing of the first limiting ring 8 and the second limiting ring 10 again, realizing the quick replacement and installation of the protective ring 6, realizing the convenient disassembly and modular replacement of the protective ring 6, effectively solving the problems of the protective cover not being able to be replaced independently, complex maintenance, and high cost in the existing technology, and has good practicality and promotion value.

[0030] By replacing the first limiting ring 8, the second limiting ring 10, the limiting block 12, the slot 13, the block strip 14, the slide groove 15, the spring 16, the locking post 17, and the limiting hole 21 in the mechanism, the protective ring 6 can be quickly disassembled and installed after the propeller 5 is removed by pressing the locking post 17 and rotating the second limiting ring 10. The entire operation does not rely on other tools and has the advantages of flexible disassembly and assembly, reliable positioning, and simple operation. It realizes the individual replacement of the protective ring 6, avoids the disassembly of the entire shell, facilitates replacement, improves maintenance efficiency, effectively reduces maintenance costs, improves operational efficiency, and meets the rapid maintenance needs of UAVs in high-frequency and complex environments. It has good practicality and promotion value.

[0031] Further, see attached document. Figure 3 As shown, the outer wall of the protective ring 6 has a groove 18, and an anti-collision airbag 19 is fixedly connected inside the groove 18 to buffer the impact when the protective ring 6 collides. During the side collision or fall of the aircraft, it absorbs part of the impact force, reduces the impact transmitted to the propeller 5 and the UAV body 1, significantly improves the impact resistance and flight safety of the whole aircraft, and effectively reduces the risk of deformation of the propeller 5 or damage to the protective structure caused by the impact.

[0032] Further, see attached document. Figure 3 As shown, the bottom of each of the four mounting blocks 3 is fixedly connected with a rubber pad 20 for protecting the bottom of the mounting block 3 when the UAV body 1 lands. The rubber pad 20 can effectively prevent the bottom of the mounting block 3 from being scratched, cracked or worn when it touches the ground, and also has a certain cushioning and shock absorption function.

[0033] Further, see attached document. Figure 4As shown, the outer wall of the second limiting ring 10 is provided with an anti-slip groove to increase the friction between the user's hand and the outer wall of the second limiting ring 10, so as to facilitate the rotation of the second limiting ring 10 and the first limiting ring 8 for limiting.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0035] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel multi-rotor unmanned aerial vehicle (UAV) includes a UAV body (1), wherein the outer wall of the UAV body (1) is provided with four wing rods (2), one end of each of the four wing rods (2) is fixedly connected to a mounting block (3), the top of each of the four mounting blocks (3) is rotatably connected to a rotating rod (4), and a propeller (5) is installed at the top of the rotating rod (4), characterized in that: A protective ring (6) is provided on the top of the mounting block (3) near the outer wall of the blade (5). A support plate (7) is fixedly connected between the inner walls of the protective ring (6). The outer wall of the rotating rod (4) passes through the top of the support plate (7). A replacement mechanism for disassembling and replacing the protective ring (6) is provided between the top of the mounting block (3) and the bottom of the protective ring (6).

2. The novel multi-rotor unmanned aerial vehicle according to claim 1, characterized in that, The replacement mechanism includes a first limiting ring (8) fixedly connected to the top of the rotating rod (4), a connecting block (9) fixedly connected to the bottom of the support plate (7), the connecting block (9) being sleeved on the outer wall of the rotating rod (4), a second limiting ring (10) fixedly connected to the bottom of the connecting block (9), an observation hole (11) being provided in the middle of the first limiting ring (8), the connecting block (9) and the second limiting ring (10), and limiting blocks (12) fixedly connected to the outer walls of the first limiting ring (8) and the second limiting ring (10) respectively. The length of the limiting blocks (12) on both sides of the first limiting ring (8) is higher than that of the limiting blocks (12) on both sides of the second limiting ring (10). The inner walls of the limiting blocks (12) are provided with slots (13), and the outer walls of the first limiting ring (8) and the second limiting ring (10) are fixedly connected with blocks (14).

3. A novel multi-rotor unmanned aerial vehicle according to claim 2, characterized in that, The outer walls of both sides of the connecting block (9) are provided with sliding grooves (15), and springs (16) are fixedly connected inside the sliding grooves (15). One end of the spring (16) is fixedly connected with a locking post (17). One end of the locking post (17) penetrates the outer wall of the second limiting ring (10). Limiting holes (21) are provided on the side walls of the limiting blocks (12) on both sides of the outer wall of the first limiting ring (8). One end of the locking post (17) penetrates into the limiting hole (21).

4. A novel multi-rotor unmanned aerial vehicle according to claim 1, characterized in that, The outer wall of the protective ring (6) is provided with a groove (18), and the inner wall of the groove (18) is fixedly connected with an anti-collision airbag (19) for buffering when the protective ring (6) collides.

5. A novel multi-rotor unmanned aerial vehicle according to claim 1, characterized in that, Each of the four mounting blocks (3) has a rubber pad (20) fixedly connected to its bottom for protecting the bottom of the mounting block (3) when the UAV body (1) lands.

6. A novel multi-rotor unmanned aerial vehicle according to claim 3, characterized in that, One end of the card block (14) is arc-shaped and the outer wall of the card block (14) is adapted to the inner wall of the card slot (13).

7. A novel multi-rotor unmanned aerial vehicle according to claim 3, characterized in that, One end of the locking pin (17) is semi-circular in shape, and when one end of the locking pin (17) is pressed, the locking pin (17) will slide into the groove (15) and compress the spring (16).

8. A novel multi-rotor unmanned aerial vehicle according to claim 3, characterized in that, The outer wall of the second limiting ring (10) is provided with an anti-slip groove to increase the friction between the user's hand and the outer wall of the second limiting ring (10).

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