Rotary wing unmanned aerial vehicle

Abstract

The invention discloses a rotary wing unmanned aerial vehicle, and relates to the field of unmanned aerial vehicles, the rotary wing unmanned aerial vehicle comprises an unmanned aerial vehicle seat, the outer side of the unmanned aerial vehicle seat is provided with four groups of rotating seats, the outer side of each group of rotating seats is rotatably connected with a first cantilever, the end part of each first cantilever is movably connected with a second cantilever, and the outer side of each second cantilever is provided with a circular protection cover; a brushless motor is installed on the inner side of the circular protection cover, fan blades are connected to the output end of the brushless motor, a supporting frame is installed on the outer side of the circular protection cover, a supporting structure is fixed to the bottom end of the supporting frame, and a moving object is arranged below the unmanned aerial vehicle base. According to the unmanned aerial vehicle, through arrangement of a rotating seat, when the unmanned aerial vehicle needs long-distance cruising movement, the angles of the two sets of second cantilevers which are symmetrically arranged can be adjusted, so that the angles of the two sets of symmetrical brushless motors and fan blades are adjusted, and upward propulsive force generated by the two sets of symmetrical brushless motors and fan blades is converted into propulsive force in the horizontal direction; therefore, the unmanned aerial vehicle is pushed to move horizontally.

Description

Technical Field

[0001] The present invention relates to the field of unmanned aerial vehicles, and specifically to a rotary-wing unmanned aerial vehicle. Background Art

[0002] An unmanned aerial vehicle, abbreviated as "UAV" and with the English abbreviation "UAV", is an unpiloted aircraft controlled by a radio remote control device and a self-contained program control device, or is completely or intermittently autonomously operated by an on-vehicle computer. Among them, UAVs are divided into fixed-wing UAVs and rotary-wing UAVs. Rotary-wing UAVs can adjust the position of the wings by rotation, thereby changing the angle of the wings, facilitating the retraction of the wings, reducing the occupied area of the UAV, and enabling the UAV to pass through narrow spaces in the environment.

[0003] The prior art, such as a new foldable rotor tilt quadcopter UAV disclosed in CN202111351974.0, can fold the wings, change the angle of the wings, and thus facilitate the retraction of the wings, and facilitate the stable flight of the UAV when the wings are damaged.

[0004] However, in the prior art, during the rotation process of the wings of the UAV, only up-and-down rotation adjustment can be performed. When the UAV moves in the air using rotary wings, it consumes a large amount of energy and is unstable. However, when using a fixed-wing structure, a towing runway is required. Moreover, when the existing rotary-wing UAVs carry items, an additional adsorption rack needs to be attached, and it is not convenient to fix. Finally, when the existing UAVs pass through narrow spaces, the outer side of the propeller fan blades is very easy to collide with the external environment, resulting in damage to the fan blades. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a rotary-wing unmanned aerial vehicle to solve the technical problems of inconvenient switching of the wing position, inconvenient lifting of items, and easy damage to the propeller fan blades.

[0006] To achieve the above object, the present invention provides the following technical solution: A rotary-wing unmanned aerial vehicle, including a UAV seat. Four groups of rotating seats are installed on the outer side of the UAV seat, and a first cantilever is rotatably connected to the outer side of each group of rotating seats. The end of the first cantilever is movably connected to a second cantilever. A circular protective cover is installed on the outer side of the second cantilever. A brushless motor is installed inside the circular protective cover. The output end of the brushless motor is connected to a fan blade. A support frame is installed on the outer side of the circular protective cover. A support structure is fixed at the bottom of the support frame. A moving object is arranged below the UAV seat.

[0007] By adopting the above technical solution, it is possible to facilitate the UAV to pass through some narrow areas and facilitate the clamping of some items.

[0008] The present invention is further configured such that a signal receiver is installed at the top end of the drone seat, a clamping plate and a suction cup are installed at the bottom end of the drone seat, a plurality of clamping springs are provided in the inner wall of the bottom end of the drone seat, and both ends of the clamping spring are respectively fixed to the drone seat and the clamping plate, and the suction cup is located at the middle position of the bottom end of the drone seat.

[0009] By adopting the above technical solution, it is convenient for the drone seat to pre-fix some items.

[0010] The present invention is further configured such that the first cantilever is rotatably connected to the rotating seat, a controller, a rotating motor and two fixed cylinders are installed inside the first cantilever, the controller is connected to the rotating motor and the fixed cylinders through wires, the two fixed cylinders are symmetrically installed on both sides of the rotating motor, and the output end of the rotating motor is fixedly connected to the second cantilever. A plurality of fixing holes matching the fixed cylinders are provided on the outer wall of the second cantilever, and the circular protective cover is inserted into the fixing holes to limit the second cantilever.

[0011] By adopting the above technical solution, the second cantilever can be rotated, so as to drive the brushless motor and the fan blade to adjust the angle.

[0012] The present invention is further configured such that the circular protective cover is circular, the support frame is a long strip bent fixing rod, a protective frame is installed on the outer side of the support frame, and the protective frame surrounds the outside of the fan blade.

[0013] By adopting the above technical solution, it is convenient to protect the fan blade.

[0014] The present invention is further configured such that a buffer spring is connected to the bottom end of the support frame, and a base is installed at the bottom end of the buffer spring. When the first cantilever rotates to the vertical position, the base presses against the outside of the moving object.

[0015] By adopting the above technical solution, the drone can be supported, and when clamping an item, the base can provide a pressing force to fix the item.

[0016] The present invention is further configured such that the circular protective cover is square, the support frame includes a torsion spring rod and a guide plate, the guide plate is fixed to the outer wall of the circular protective cover, the guide plate is fixed outside the torsion spring rod, and the guide plate presses against the outside of the moving object.

[0017] By adopting the above technical solution, it is convenient to support the drone, clamp an item, and guide the air flow.

[0018] In summary, the present invention mainly has the following beneficial effects:

[0019] 1. Through the provided drone seat, rotating seat, and brushless motor, when moving a moving object, the drone seat can be landed on the top of the moving object. Under the action of gravity, each group of cantilevers droops and adheres to the outside of the moving object. At this time, the symmetrically arranged brushless motors are started synchronously. Two of the brushless motors drive the fan blades to generate an upward propulsive force, thereby driving the cantilevers to rotate to the horizontal position, and then driving the drone seat to move synchronously with the moving object. The other two brushless motors drive the fan blades to generate a downward propulsive force, so that the two bases further clamp and fix the moving object, improving the stability of the moving object.

[0020] 2. The present invention also adjusts the angles of the two symmetrically arranged second cantilevers through the provided rotating seat when the drone needs to cruise and move over a long distance, so as to adjust the angles of the two symmetrically arranged brushless motors and fan blades, and convert the upward propulsive force generated by them into a horizontal propulsive force, thereby driving the drone to move horizontally. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is a schematic structural diagram of the cantilever of the present invention;

[0023] Figure 3 is a schematic structural diagram of the present invention after the angle of the cantilever is adjusted;

[0024] Figure 4 is a schematic structural diagram of the first cantilever of the present invention;

[0025] Figure 5 is a schematic structural diagram of the second cantilever and the support frame of the present invention;

[0026] Figure 6 is a schematic structural diagram of the support frame of the present invention;

[0027] Figure 7 is a schematic structural diagram of the present invention when the moving object is moving;

[0028] Figure 8 is a schematic structural diagram of the bottom end of the drone seat of the present invention;

[0029] Figure 9 is a schematic structural diagram of the horizontal cantilever when the drone of the present invention clamps an object;

[0030] Figure 10 is a schematic structural diagram of the second embodiment of the present invention.

[0031] In the figure: 1, unmanned aerial vehicle seat; 101, signal receiver; 102, clamping plate; 103, suction cup; 104, clamping spring; 2, rotating seat; 201, first cantilever; 202, second cantilever; 2021, fixing hole; 203, protective cover; 204, controller; 205, rotating motor; 206, fixing cylinder; 3, brushless motor; 301, fan blade; 4, support frame; 401, buffer spring; 402, base; 403, torsion spring rod; 404, guide plate; 5, protective frame; 6, moving object. Specific embodiments

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0033] The embodiments of the present invention will be described below according to its overall structure.

[0034] The first embodiment

[0035] A rotary-wing unmanned aerial vehicle, such as Figures 1 to 10As shown in the figure, it includes a drone seat 1. Four groups of rotating seats 2 are installed on the outer side of the drone seat 1. And a first cantilever 201 is rotatably connected to the outer side of each group of rotating seats 2. The end of the first cantilever 201 is movably connected to a second cantilever 202. A circular protective cover 203 is installed on the outer side of the second cantilever 202. A brushless motor 3 is installed inside the circular protective cover 203. The output end of the brushless motor 3 is connected to a fan blade 301. A support frame 4 is installed on the outer side of the circular protective cover 203. The circular protective cover 203 is circular. When the drone is flying, start the four groups of brushless motors 3. The brushless motors 3 drive the fan blades 301 to rotate. The fan blades 301 generate an upward thrust, thereby driving each group of cantilevers to be horizontal, and at the same time driving the drone seat 1 to move upward, thus realizing the upward movement of the drone. When the drone needs to pass through a narrow space, turn off two symmetrically arranged brushless motors 3. Under the action of gravity, drive the first cantilever 201 to rotate downward around the rotating seat 2, so that the two first cantilevers 201 are vertically arranged, thereby reducing the lateral area occupied by the drone, and thus facilitating passing through the narrow space. The support frame 4 is a long strip bent fixed rod. A protective frame 5 is installed on the outer side of the support frame 4. The protective frame 5 surrounds the fan blade 301 and can protect the fan blade 301 during flight. The bottom end of the support frame 4 is connected to a buffer spring 401, and the bottom end of the buffer spring 401 is installed with a base 402, which can be used to support the drone. And when it is necessary to carry a moving object 6, control the drone seat 1 to move above the moving object 6, and make the drone seat 1 land on the top of the moving object 6. At this time, the suction cup 103 fits on the top of the moving object 6. Under the action of gravity, the four first cantilevers 201 rotate downward around the rotating seat 2, so that the base 402 is closely attached to the outer side of the moving object 6. Then start two symmetrically arranged brushless motors 3, so that their fan blades 301 generate an upward rotational force. These two cantilevers are in a horizontal position and drive the drone seat 1 and the moving object 6 to move upward. At the same time, start the other two symmetric brushless motors 3 to rotate in the reverse direction, thereby pushing the base 402 at the bottom of these two brushless motors 3 to further clamp and fix the moving object 6.

[0036] Please refer to Figure 1 , a signal receiver 101 is installed at the top of the drone seat 1. A clamping plate 102 and a suction cup 103 are installed at the bottom of the drone seat 1. A plurality of clamping springs 104 are provided on the inner wall of the bottom end of the drone seat 1. The two ends of the clamping spring 104 are respectively fixed on the drone seat 1 and the clamping plate 102. The suction cup 103 is located at the middle position of the bottom end of the drone seat 1, which can facilitate the limit clamping of the moving object 6.

[0037] Please refer to Figure 4, the first cantilever 201 is rotatably connected around the rotating seat 2. Inside the first cantilever 201, a controller 204, a rotating motor 205, and two fixed cylinders 206 are installed. The controller 204 is connected to the rotating motor 205 and the fixed cylinders 206 through wires. The two fixed cylinders 206 are symmetrically installed on both sides of the rotating motor 205, and the output end of the rotating motor 205 is fixedly connected to the second cantilever 202. A plurality of fixing holes 2021 matching the fixed cylinders 206 are provided on the outer wall of the second cantilever 202. The circular protective cover 203 is inserted into the fixing holes 2021 to limit the second cantilever 202, facilitating the adjustment of the angles of the brushless motor 3 and the fan blade 301, and facilitating the horizontal flow of the driven air flow.

[0038] The second embodiment

[0039] Please refer to Figure 10 , which is the second embodiment of the present application. The difference from the first embodiment is the structure of the support frame 4. Specifically, the circular protective cover 203 is square. The support frame 4 includes a torsion spring rod 403 and a guide plate 404. The guide plate 404 is fixed to the outer wall of the circular protective cover 203. The guide plate 404 is fixed outside the torsion spring rod 403. The guide plate 404 is pressed against the outside of the moving object 6. During the pressing process, the moving object 6 can be limited by the guide plate 404. And when the fan blade 301 rotates, the driven air flow will flow along the guide plate 404, thereby improving the efficiency of air flow.

[0040] During use, first charge the drone fully. When in use, first start the four brushless motors 3. The brushless motors 3 drive the fan blades 301 to rotate (in existing drones, in order to maintain balance, usually two positive propellers and two reverse propellers are used for control, generally symmetrically arranged. In this description, the rotation angles, directions, etc. of the positive and reverse propellers of the drone will not be described in detail, which is not related to the present application, and only the upward thrust generated by the fan blades is described). The fan blades 301 generate an upward thrust, thereby driving each cantilever to be horizontal, and at the same time driving the drone seat 1 to move upward, thus realizing the upward movement of the drone. When the drone needs to pass through a narrow space, turn off the two symmetrically arranged brushless motors 3. Under the action of gravity, drive the first cantilever 201 to rotate downward around the rotating seat 2, so that the two first cantilevers 201 are vertically arranged, thereby reducing the lateral area occupied by the drone, and thus facilitating passing through the narrow space;

[0041] When the drone needs to carry some items that are not too heavy, first control the drone seat 1 to move above the moving object 6, and make the drone seat 1 land on the top of the moving object 6. At this time, the suction cup 103 fits on the top of the moving object 6, and the clamping plate 102 is fixed on the outside of the moving object 6, and the moving object 6 is clamped by the clamping spring 104. Under the action of gravity, the four groups of first cantilevers 201 rotate downward around the rotating seat 2, so that the base 402 is closely attached to the outside of the moving object 6. Then start the two symmetrically arranged brushless motors 3, so that the fan blades 301 generate an upward rotational force. These two groups of cantilevers are in a horizontal position and drive the drone seat 1 and the moving object 6 to move upward. At the same time, start the other two symmetric brushless motors 3 to rotate in the reverse direction, generating a downward force (that is, the clamping direction of the moving object 6), so as to push the base 402 at the bottom of these two brushless motors 3 to further clamp and fix the moving object 6. And the fixation from different directions improves the fixation effect of the moving object 6 and the stability of the moving object 6 during movement;

[0042] When the drone needs to move stably within a certain distance, at this time, the controller 204 controls the rotation motors 205 and the fixed cylinders 206 in the two first cantilevers 201 perpendicular to the moving direction of the drone (during the angle adjustment process, it is necessary to accelerate the rotation of the other two brushless motors 3 to keep the drone suspended). The fixed cylinder 206 is withdrawn from the fixing hole 2021 to release the limit on the second cantilever 202. The second cantilever 202 rotates to a position perpendicular to the first cantilever 201 driven by the rotation motor 205. Secondly, start the brushless motors 3 in the two rotated cantilevers to drive the fan blades 301 to rotate. The fan blades 301 generate a horizontal component force of the drone, so as to drive the drone seat 1 to move horizontally, enabling the drone seat 1 to maintain a uniform horizontal movement and improving the movement effect.

[0043] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A rotary-wing unmanned aerial vehicle, comprising a drone seat (1), characterized in that: Four groups of rotating seats (2) are installed on the outer side of the drone seat (1), and a first cantilever (201) is rotatably connected to the outer side of each group of rotating seats (2). The end of the first cantilever (201) is movably connected to a second cantilever (202). A circular protective cover (203) is installed on the outer side of the second cantilever (202). A brushless motor (3) is installed inside the circular protective cover (203). The output end of the brushless motor (3) is connected to a fan blade (301). A support frame (4) is installed on the outer side of the circular protective cover (203). A support structure is fixed at the bottom end of the support frame (4). A moving object (6) is arranged below the drone seat (1).

2. The rotary-wing unmanned aerial vehicle according to claim 1, wherein: A signal receiver (101) is installed at the top end of the drone seat (1). A clamping plate (102) and a suction cup (103) are installed at the bottom end of the drone seat (1). A plurality of clamping springs (104) are arranged on the inner wall of the bottom end of the drone seat (1). The two ends of the clamping spring (104) are respectively fixed on the drone seat (1) and the clamping plate (102). The suction cup (103) is located at the middle position of the bottom end of the drone seat (1).

3. The rotary-wing UAV according to claim 1, wherein: The first cantilever (201) is rotatably connected around the rotating seat (2). A controller (204), a rotating motor (205) and two fixed cylinders (206) are installed inside the first cantilever (201). The controller (204) is connected to the rotating motor (205) and the fixed cylinders (206) through wires. The two fixed cylinders (206) are symmetrically installed on both sides of the rotating motor (205). The output end of the rotating motor (205) is fixedly connected to the second cantilever (202). A plurality of fixing holes (2021) matching the fixed cylinders (206) are arranged on the outer wall of the second cantilever (202). The circular protective cover (203) is inserted into the fixing holes (2021) to limit the second cantilever (202).

4. The rotary wing unmanned aerial vehicle according to claim 1, wherein: The circular protective cover (203) is circular. The support frame (4) is a long strip bent fixing rod. A protective frame (5) is installed on the outer side of the support frame (4). The protective frame (5) surrounds the outer side of the fan blade (301).

5. The rotary wing UAV according to claim 4, characterized in that: A buffer spring (401) is connected to the bottom end of the support frame (4), and a base (402) is installed at the bottom end of the buffer spring (401). When the first cantilever (201) rotates to the vertical position, the base (402) presses against the outer side of the moving object (6).

6. The rotary wing UAV according to claim 1, wherein: The circular protective cover (203) is square. The support frame (4) includes a torsion spring rod (403) and a guide plate (404). The guide plate (404) is fixed on the outer wall of the circular protective cover (203). The guide plate (404) is fixed on the outer side of the torsion spring rod (403). The guide plate (404) presses against the outer side of the moving object (6).

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