A rotary-wing UAV with lifting wings

Abstract

A rotary-wing UAV with a wing, comprising a UAV body (1), characterized in that: six groups of arms (2) are mounted at equal intervals on the surface of the UAV body (1), one end of the arms (2) is fixedly connected to a mounting plate (21), the underside of one end of the arms (2) is fixedly connected to a reinforcing rib (22), the other end of the arms (2) is fixedly connected to a connecting piece (23), the surface of the connecting piece (23) is fixedly connected to a mounting seat (24), the top of the mounting seat (24) is fixedly connected to a rotor (25), the underside of the mounting plate (21) is fixedly connected to two groups of sliding blocks (26), the front and rear four groups of arms (2) are fixedly connected at one end near the connecting piece (23) to a connecting piece (27), the surface of the connecting piece (27) is fixedly connected to the wing (28),The surface of the drone body (1) is connected at equal intervals to six groups of fastening bolts (3). The surface of the drone body (1) is provided at equal intervals with six groups of mounting structures (4). The mounting structure (4) comprises a fastening block (41). The surface of the fastening block (41) is symmetrically provided with two groups of mounting grooves (42). The bottom of the mounting groove (42) is provided with a sliding groove (43). The interior of the sliding groove (43) is slidably connected to a limiting block (44). The interior of the limiting block (44) is fixedly connected to a connecting rod (45). The underside of the limiting block (44) is fixedly connected to a spring (46). The top of the connecting rod (45) is fixedly connected to a clamping block (47). The underside of the connecting rod (45) is fixedly connected to a pull rod (48). The underside of the sliding block (46) is provided with a clamping groove (49).

Description

Technical field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) technology and relates in particular to a rotary-wing UAV with lifting wings. background

[0002] A multirotor drone is an unmanned aerial vehicle (UAV) with three or more rotor shafts, whose flight path is controlled by adjusting the rotor speed. Multirotor drones are frequently used for their vertical takeoff and landing (VTOL) and hovering capabilities. They are characterized by a fixed rotor collective angle, a compact design, highly reliable components, and excellent hovering performance. However, their low travel efficiency and short flight time are industry-recognized technical shortcomings. This is where lift-wing multirotor technology comes in. This technology integrates low-angle wings onto the multirotor fuselage. During flight, it uses aerodynamic lift for weight distribution, thus significantly reducing the motor's power requirement.In level flight, the lift wings generate lift through the pressure difference above and below the wings, distribute the propeller load, and significantly reduce the engine's power requirement. The key lies in the mounting angle: the wings are mounted at a specific, small angle to create a positive angle of attack during cruise flight, thus maximizing lift efficiency.

[0003] Although there have been attempts to integrate lifting wings into existing technology, these designs are often complex, unreliable, and offer only limited optimization benefits. Maintenance of the lifting wings requires disassembling the entire drone, which is cumbersome. For this reason, we propose a rotor drone with lifting wings. Summary of the utility model

[0004] To solve the aforementioned technical problems, the present utility model aims to develop a rotary-wing drone with lifting wings. This addresses the concerns raised in the prior art mentioned above. While attempts have already been made to integrate lifting wings, these designs often exhibit complex structures, low reliability, or limited optimization effects. Maintaining the lifting wings requires disassembling the entire drone, making maintenance relatively time-consuming.

[0005] To achieve the aforementioned objective, the present invention offers the following technical solutions: a rotor UAV with a wing, comprising a UAV body, six groups of arms mounted at equal intervals on the surface of the UAV body, wherein one end of the arm is fixedly connected to a mounting plate, the underside of one end of the arm is fixedly connected to a reinforcing rib, the other end of the arm is fixedly connected to a connector 1, the surface of the connector 1 is fixedly connected to a mounting seat, the top of the mounting seat is fixedly connected to a rotor, the underside of the mounting plate is fixedly connected to two groups of sliding blocks, the front and rear four groups of arms are fixedly connected to a connector 2 at one end near the connector 1, and the connector 2 is fixedly connected to the other end of the connector 1.The surface of the second connecting piece is rigidly connected to a wing, the surface of the drone body is connected at equal intervals to six groups of fastening bolts, the surface of the drone body is provided at equal intervals with six groups of mounting structures, the mounting structure comprising a fixed block, the surface of the fixed block being symmetrically provided with two groups of mounting grooves, the bottom of the mounting groove being provided with a sliding groove, the interior of the sliding groove being slidably connected to a limiting block, the interior of the limiting block being rigidly connected to a connecting rod, the underside of the limiting block being rigidly connected to a spring, the top of the connecting rod being rigidly connected to a clamping block, the underside of the connecting rod being rigidly connected to a pull rod, and the underside of the sliding block being provided with a clamping groove.

[0006] Preferably, the first connection is inclined at an angle of 70.2 degrees. Both the first and second connections are made of carbon fiber.

[0007] The wing is preferably 3D printed from ABS, has a trapezoidal shape and an aspect ratio of 3:1.

[0008] Threaded slots are preferably located at the upper hexagonal corners of the drone body and on the top of each mounting plate set. The mounting screws are rotatably connected in the threaded slots.

[0009] Preferably, the ends of the pull rod extend through the bottoms of the two sliding slots and are firmly connected to the two connecting rods. The connecting rods extend through the stop blocks and are firmly connected to the clamping blocks. The spring is placed on the outside of the connecting rods, and the ends of the spring are firmly connected to the bottoms of the stop blocks and the underside of the inner wall of the sliding slots.

[0010] The sliding block preferably has the shape of an inverted T and is slidably fixed in the mounting slot, with the clamping slot being located above the sliding slot.

[0011] The clamping block preferably has a triangular cross-section and is slidably mounted in the clamping slot.

[0012] Compared to the prior art, the present invention offers the following advantages: 1. This rotary-wing drone with a lifting wing consists of a first connecting piece, a rotor, a second connecting piece, and a lifting wing. By attaching the first connecting piece at a 70.2-degree angle and mounting a lifting wing with a specific profile and aspect ratio to the arm, the rotor and lifting wing together generate significant aerodynamic lift in horizontal flight, thus reducing the drone's weight. This considerably reduces the motor's power consumption, extends flight time, and increases cruising speed. Since the lift is primarily generated by the efficient rotor, the motor requires less thrust to overcome drag and maintain speed. This allows the drone to fly efficiently at higher speeds. The attached lifting wing not only provides lift but also increases aerodynamic damping in horizontal flight.In turbulent air, the entire wing system acts as a natural stabilizer and effectively suppresses pitching and rolling oscillations. 2. This rotor UAV with lifting wings is equipped with a mounting structure. This structure, consisting of a sliding block, mounting slot, spring, clamping block, and clamping slot, allows for quick assembly and locking of the arm and the entire rotor system to the UAV housing. During assembly, the sliding block simply needs to be slid along the mounting slot. The clamping block automatically engages in the clamping slot under spring tension, thus securing the initial locking mechanism. Finally, the mounting screws can be tightened. A single arm assembly can be installed and removed, simplifying maintenance. BRIEF DESCRIPTION OF THE DRAWINGS Fig. shows a schematic perspective view of the structure of the present invention; Fig. shows a schematic perspective view of the structure of the arm of the present invention; Fig. shows an exploded view of the structure of the drone body, arm and fastening screws of the present invention; Fig. shows an exploded view of the structure of the arm of the present invention; Fig. shows an exploded view of the structure of the drone body and arm of the present invention; Fig. shows an exploded view of the sliding block and the fastening structure of the present invention in cross-section.

[0013] In the illustration: 1. Drone body; 2. Arm; 21. Mounting plate; 22. Reinforcing rib; 23. Connector 1; 24. Mounting seat; 25. Rotor; 26. Sliding block; 27. Connector 2; 28. Wing; 3. Mounting screw; 4. Mounting structure; 41. Mounting block; 42. Mounting slot; 43. Sliding slot; 44. Limiting block; 45. Connecting rod; 46. Spring; 47. Clamping block; 48. Pull rod; 49. Clamping slot. Detailed description of the invention

[0014] The following explanations and the accompanying drawings clearly and completely describe the technical solutions of the embodiments of the present invention. The described embodiments naturally represent only a portion of the embodiments of the present invention and do not claim to be exhaustive. All further embodiments derived by persons skilled in the art without inventive step based on the embodiments of the present invention fall within the scope of protection of the present invention.

[0015] In the Fig. An embodiment of the present invention is shown: A rotary-wing drone with wings consists of a drone body 1 and six arm assemblies 2 mounted equidistantly on the surface of the drone body 1. One end of each arm 2 is rigidly connected to a mounting plate 21. A reinforcing rib 22 is rigidly connected to the underside of one end of each arm 2. A connector 23 is rigidly connected to the other end of each arm 2. A mounting seat 24 is rigidly connected to the surface of the connector 1 23. A rotor 25 is rigidly connected to the top of the mounting seat 24. Two sliding blocks 26 are rigidly connected to the underside of the mounting plate 21. Four front and rear arm assemblies 2 are rigidly connected at their ends near the connector 1 23 to the connector 2 27. A wing 28 is rigidly connected to the surface of the connector 2 27.Six sets of fastening screws 3 are rotatably mounted at equal intervals on the surface of the drone body 1, and six sets of mounting structures 4 are arranged at equal intervals on the surface of the drone body 1. The mounting structures 4 consist of fastening blocks 41, two sets of mounting grooves 42 defined symmetrically on the surface of each fastening block 41, a sliding groove 43 at the bottom of each mounting groove 42, and a sliding slot 43 arranged in each sliding slot 43.The sliding connection limiting block 44 comprises a connecting rod 45 fixedly connected to the inside of the limiting block 44, a spring 46 fixedly connected to the underside of the limiting block 44, a clamping block 47 fixedly connected to the top of the connecting rod 45, a pull rod 48 fixedly connected to the underside of the connecting rod 45, a clamping slot 49 on the underside of the sliding block 26, as well as a connecting piece 23, a rotor 25, a connecting piece 27, and a lifting wing 28. By attaching the connecting piece 23 at an angle of inclination of 70.2 degrees and attaching a lifting wing with a specific profile and aspect ratio to the arm 2, the lifting wing 28 can be raised. The lifting wings 28 enable the rotor 25 and lifting wings 28 to work together to generate enormous aerodynamic lift during horizontal flight of the drone.This effectively distributes the drone's weight, significantly reducing the motor's power consumption, effectively extending flight time, and increasing cruising speed. Since lift is primarily generated by the efficient rotor 25, the motor requires less thrust to overcome drag and maintain speed, allowing the drone to fly efficiently at higher speeds. The additional lifting wings 28 not only provide lift but also enhance the drone's aerodynamic damping during horizontal flight. In turbulent airflow, the entire wing system can act as a natural stabilizer, effectively suppressing pitch and roll movements. A mounting structure 4 is provided.The mounting structure 4, consisting of a sliding block 26, a mounting groove 42, a spring 46, a clamping block 47, and a clamping groove 49, allows the arm 2 and the entire rotor system 25 to be quickly mounted and locked onto the drone body 1. During assembly, the sliding block 26 simply needs to be slid along the mounting groove 42. The clamping block 47 automatically engages in the clamping groove 49 under the action of the spring 46, thus locking the initial movement. Finally, the fastening screw 3 is tightened. This simplifies the assembly and disassembly of a single arm assembly 2, thus facilitating maintenance.

[0016] Furthermore, connector 1 23 is inclined at an angle of attack of 70.2°. Both connector 1 23 and connector 2 27 are made of carbon fiber. This specific angle was optimized through aerodynamic calculations and experimental verification to achieve an optimal balance between thrust and lift in level flight, thus maximizing flight efficiency. The use of carbon fiber ensures sufficient structural strength of the connector while maintaining low weight, which contributes to improved overall load-bearing capacity and service life.

[0017] The Hubflügel 28 is 3D-printed from ABS. It has a trapezoidal shape with an aspect ratio of 3:1. 3D printing enables rapid prototyping and precise control of the airfoil. The trapezoidal design and the 3:1 aspect ratio contribute to a high lift-to-drag ratio, which is crucial for improving aerodynamic efficiency.

[0018] Furthermore, threaded grooves are provided on the upper hexagon of the drone body 1 and on the top surface of each set of mounting plates 21, in which the fastening screws 3 are rotatably mounted. Through the interaction of the fastening screws 3 and the threaded grooves, the arm 2 and the entire wing system attached to it can be firmly fastened to the drone body 1, thus ensuring the stability of the force transmission and structural integrity during flight.

[0019] Furthermore, the ends of a pull rod 48 extend through the bottoms of the two sliding grooves 43 and are firmly connected to the two connecting rods 45. The connecting rods 45 extend through the limit blocks 44 and are firmly connected to the locking blocks 47. A spring 46 is attached to the outside of the connecting rods 45. The ends of the spring 46 are firmly connected to the bottoms of the limit blocks 44 and to the bottoms of the inner walls of the sliding grooves 43, respectively. This assembly forms an elastic locking mechanism. The preload of the spring 46 ensures that the locking blocks 47 always tend upwards, so that when the sliding block 26 is inserted, they automatically and reliably engage in the locking grooves 49, thus achieving rapid locking.By pulling the pull rod 48 downwards, the spring force of the spring 46 is overcome, causing the locking blocks 47 to exit the locking grooves 49 and achieve rapid unlocking.

[0020] The sliding block 26 is in the shape of an inverted T and slides into the mounting slot 42. The locking slot 49 is located above the sliding slot 43. The inverted T-shaped sliding block 26 interacts with the mounting slot 42 to initially position and limit the arm 2 horizontally, thus preventing lateral movement. The locking slot 49 on its underside receives the locking block 47, completing the vertical locking mechanism. This step-by-step assembly method improves assembly accuracy and ease of use.

[0021] The locking block 47 has a triangular cross-section and slides into the locking slot 49. This triangular cross-section serves as a guide during insertion. Even with slight misalignment, the inclined surface guides the block 47 smoothly into the slot 49. After locking, the flat surface of the triangle effectively resists recoil forces, prevents accidental loosening, and increases the reliability of the connection.

[0022] Operating principle: During the takeoff, landing, and hovering phases, the operation is similar to that of a conventional multi-rotor drone. After all rotors 25 are fixed at an angle of inclination of 70.2° via connection 1 23, the airflow, upon entering the cruise phase, not only acts on the rotors 25 but also generates upward aerodynamic lift through the action of the lift wing 28. This significantly distributes the drone's weight, thereby reducing the motor load, saving energy, and improving efficiency. During assembly, the sliding block 26 is inserted into the mounting groove 42, and its surface contacts the inclined surface of the card block 47, pushing the card block 47 upward.When the sliding block 26 is fully inserted into the mounting groove 42, the connecting rod 45 pushes the retaining block 44 downwards, compressing the spring 46 and moving the retaining block 47 upwards. Once the sliding block 26 is fully inserted into the mounting slot 42, the retaining block 47 is aligned with the retaining slot 49. Under the action of the spring 46, the retaining block 47 automatically engages in the retaining slot 49, thus locking the bracket. Finally, the fastening screw 3 is tightened. To disassemble, the fastening screw 3 is loosened and the pull rod 48 is pulled downwards to overcome the spring force of the spring 46. This releases the retaining block 47 from the retaining slot 49. The sliding block 26 can then be pulled out of the mounting slot 42 and the arm 2 removed.

[0023] It is clear to those skilled in the art that the present invention is not limited to the details of the embodiment described above and can be carried out in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments are to be considered in every respect illustrative and not limiting. The scope of the present invention is defined by the appended claims and not by the preceding description. All variations that fall within the meaning and equivalent scope of the claims are encompassed by the present invention. Reference numerals in a claim are not to be construed as limiting that claim.

Claims

[1] A rotary-wing UAV with one wing, consisting of a UAV body (1), characterized by, that: six groups of arms (2) are mounted at equal intervals on the surface of the UAV body (1), one end of the arms (2) is fixedly connected to a mounting plate (21), the underside of one end of the arms (2) is fixedly connected to a reinforcing rib (22), the other end of the arms (2) is fixedly connected to a connector (23), the surface of the connector (23) is fixedly connected to a mounting seat (24), the top of the mounting seat (24) is fixedly connected to a rotor (25), the underside of the mounting plate (21) is fixedly connected to two groups of sliding blocks (26), the front and rear four groups of arms (2) are fixedly connected at one end near the connector (23) to a connector (27), the surface of the connector (27) is fixedly connected to the wing (28), the surface of the drone body (1) is connected at equal intervals to six groups of mounting bolts (3),The surface of the drone body (1) is provided with six groups of mounting structures (4) at equal intervals. Each mounting structure (4) comprises a mounting block (41). The surface of the mounting block (41) is symmetrically provided with two groups of mounting grooves (42). The bottom of the mounting groove (42) is provided with a sliding groove (43). The interior of the sliding groove (43) is slidably connected to a limiting block (44). The interior of the limiting block (44) is fixedly connected to a connecting rod (45). The underside of the limiting block (44) is fixedly connected to a spring (46). The top of the connecting rod (45) is fixedly connected to a clamping block (47). The underside of the connecting rod (45) is fixedly connected to a pull rod (48). The underside of the sliding block (46) is provided with a clamping groove (49). [2] A rotary-wing drone with a wing according to claim 1, characterized by, that: the connecting element 1 (23) is inclined at an angle of attack of 70.2 degrees and the connecting element 1 (23) and the connecting element 2 (27) are both made of carbon fiber. [3] Rotary-wing drone with wings according to claim 1, characterized by , that the wing (28) is made of ABS material using 3D printing, is trapezoidal and has an aspect ratio of 3:

1. [4] Rotary-wing drone with wings according to claim 1, characterized by , that there is a threaded groove on the upper hexagon of the drone body (1) and on the top of the mounting plates (21) and that the fastening screws (3) are rotatable in the threaded groove. [5] Rotary-wing drone with wings according to claim 1, characterized byThe two ends of the drawbar (48) each pass through the base of the two sliding groove groups (43) and are firmly connected to the two connecting rod groups (45). The connecting rods (45) pass through the limiting block (44) and are firmly connected to the clamping block (47). The spring (46) is placed on the outside of the connecting rod (45). The two ends of the spring (46) are each firmly connected to the underside of the limiting block (44) and the underside of the inner wall of the sliding groove (43). [6] Rotary-wing drone with airfoil according to claim 1, characterized by , that the sliding block (26) has the shape of an inverted T, is slidably guided in the mounting groove (42) and the clamping groove (49) is located above the sliding groove (43). [7] Rotary-wing drone with one wing according to claim 1, characterized by , that the cross-section of the clamping block (47) is triangular and the clamping block (47) is slidably connected in the clamping slot (49).

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