A quadrotor flying mechanism combined with foldable bat wings

Abstract

The present invention discloses a quad-rotor flight mechanism combined with foldable bat wings, comprising a body fixing plate and four spiral wings arranged on both sides of the body fixing plate, wherein two sliding support plates for fixing two spiral wings at corresponding ends are arranged on the body fixing plate, and a driving mechanism for driving the two sliding support plates to move toward / backwards is also arranged on the body fixing plate; bat wing frames are respectively arranged on the same side of the body fixing plate on the two sliding support plates, and bat wings are arranged between the bat wing frames arranged opposite to each other, and when the two sliding support plates move toward / backwards, the bat wings are folded / unfolded accordingly. By combining the advantages of fixed wings and quad-rotors, the present invention can take off and land vertically, hover, and fly by gliding.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicles, and in particular to a four-rotor flying mechanism combined with foldable bat wings. Background Art

[0002] Quad-rotor drones are widely used in engineering projects and have unparalleled advantages over human power in the fields of terrain detection, aerial photography, and search. However, compared with fixed-wing drones, quad-rotor drones have shorter lifespans and slower flight speeds, which limits their flight range. Currently, there are studies on the combination of fixed-wing and quad-rotor mechanisms to combine the endurance of fixed-wing drones with the advantages of vertical take-off and landing and hovering of quad-rotors. However, fixed-wing drones rely on wings to provide lift, while quad-rotors rely on propellers to provide lift. The larger wings of fixed-wing drones produce greater flight resistance when quad-rotors are flying, affecting the flight characteristics of quad-rotors.

[0003] The patent specification with publication number CN113753229A discloses a foldable fixed-wing quad-rotor composite UAV and its control method; wherein the double-layer arm includes an upper X-shaped frame and a lower X-shaped frame, the flight control protection plate is fixed on the upper middle connecting plate, the inner side of the upper support plate is provided with a duct through hole, the outer side is provided with a motor, and the propeller is driven to rotate by the motor; a wing is provided between the upper support plate and the lower support plate; the wing includes a fixed wing and a duct, and a fixed wing is connected between the upper support plate and the lower support plate; the duct is matched on the upper X-shaped frame, the motor fixing plate and the lower X-shaped frame, and is connected to the fixed wing. In this scheme, the size of the UAV cannot be large, which will result in a very large weight. And the fixed wing is small, and the lift generated is limited.

[0004] The patent specification with publication number CN112278258A discloses a quad-rotor drone with a folding soft-wing auxiliary flight mechanism. It includes a fuselage and four main rotors arranged on both sides of the fuselage, and also includes two folding soft-wing mechanisms; the two folding soft-wing mechanisms are respectively arranged on both sides of the fuselage; when the two folding soft-wing mechanisms are unfolded, auxiliary wings are formed on both sides of the fuselage. There are retraction cavities on both sides of the fuselage; the two folding soft-wing mechanisms are respectively accommodated in the retraction cavities on both sides of the fuselage. In order to avoid the soft wings and folding wings blocking the thrust of the quad-rotor after unfolding, this solution requires a larger size between the quad-rotors. In addition, the mechanism of the soft wing is a cantilevered connecting rod structure, which limits the lift that the soft wing can provide. Similarly, due to the size, the folding fixed wing can provide a smaller lift and has a limited role in assisting flight. Summary of the invention

[0005] The object of the present invention is to provide a quadrotor flight mechanism combined with foldable bat wings, which can take off and land vertically, hover, and fly by gliding by combining the advantages of fixed wings and quadrotors.

[0006] A quad-rotor flight mechanism combined with foldable bat wings, comprising a body fixing plate and four spiral wings arranged on both sides of the body fixing plate, wherein the body fixing plate is provided with two sliding support plates for fixing two spiral wings at corresponding ends, and the body fixing plate is also provided with a driving mechanism for driving the two sliding support plates to move toward / backwards;

[0007] Bat wing frames are respectively arranged on the same side of the body fixing plate on the two sliding support plates, and bat wings are arranged between the oppositely arranged bat wing frames. When the two sliding support plates move toward / backwards, the bat wings are folded / unfolded accordingly.

[0008] This solution uses foldable bat wings as fixed wings. After folding, the resistance generated is small, which greatly reduces its impact on the flight of the quadrotor.

[0009] Preferably, the driving mechanism includes a lead screw, a nut fixed on the sliding support plate and cooperating with the lead screw, and a driving motor driving the lead screw to rotate.

[0010] Further preferably, the body fixing plate is also provided with a linear slide rail arranged in parallel, and the sliding support plate is provided with a linear bearing cooperating with the linear slide rail.

[0011] Preferably, the spiral wing is fixed to a fixed plate of the body via a fixed frame, and the spiral wing comprises a propeller and a rotor motor fixed to the fixed frame for driving the propeller to rotate.

[0012] Further preferably, the fixed frame includes a first rod fixed on the sliding support plate, and a second rod arranged perpendicular to the first rod, and the spiral wing is fixed on the end of the second rod.

[0013] Further preferably, a rotor tilt motor for driving the rotor to tilt is also provided on the fixed frame.

[0014] Preferably, the fixed frame is also provided with a rotor tilt motor for driving the rotor to tilt.

[0015] Preferably, the bat wings are made of soft material.

[0016] Beneficial effects of the present invention:

[0017] (1) The present invention uses the distance between the front and rear quadrotors to place the fixed wing, so as to avoid the fixed wing blocking the quadrotor.

[0018] (2) The present invention adopts soft bat wings as fixed wings. The bat wings are lighter and produce less resistance after being folded, which greatly reduces the impact on the flight of the quadrotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the bat wing after folding;

[0021] Figure 3 This is a schematic diagram of the bat wings after unfolding;

[0022] Figure 4 Schematic diagram of horizontal flight. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figure 1-3 As shown, a four-rotor flight mechanism combined with foldable bat wings includes a body fixing plate 10, and four spiral wings are arranged on both sides of the body fixing plate 10; specifically, two sliding support plates 3 are arranged on the body fixing plate 10, and the spiral wings are fixed on the corresponding sliding support plates 3 through a fixed frame 5.

[0025] The fixed frame 5 includes a first rod fixed on the sliding support plate 3 and arranged along the length direction of the fuselage fixed plate 10, and a second rod 52 arranged perpendicular to the first rod 51, and a spiral wing is respectively arranged at the two ends of the second rod 52. The spiral wing includes a propeller 1 and a rotor motor 2 fixed on the second rod 52 for driving the propeller to rotate. The second rod is also provided with a rotor tilt motor 9 for driving the spiral wing to tilt. The rotor tilt motor 9 is arranged below the rotor motor 2, which can reduce the influence of the structure on the thrust generated by the quadrotor and ensure the flight characteristics.

[0026] The machine body fixing plate 10 is also provided with a driving mechanism for driving the two sliding support plates 3 to move toward / away from each other; specifically, the driving mechanism includes a lead screw 41, a screw nut fixed on the sliding support plate 3 and cooperating with the lead screw, and a driving motor 42 for driving the lead screw 41 to rotate. The machine body fixing plate 10 is also provided with a parallel linear guide rail 7, and the sliding support plate 3 is provided with a linear bearing cooperating with the linear guide rail 7 to ensure the stability of the movement of the sliding support plate 3.

[0027] The two sliding support plates 3 are respectively provided with bat wing frames 6 on the same side of the body fixing plate 10, and the bat wings 8 are provided between the bat wing frames 6 arranged opposite to each other. When the two sliding support plates 3 move toward each other / backward, the bat wings 8 are folded / unfolded accordingly. In this embodiment, the bat wing frames 6 arranged on both sides of the sliding support plate 3 are an integrated structure to ensure the consistency of the folding / unfolding of the bat wings 8 on both sides. At the same time, the bat wings 8 are made of soft material, lighter in weight, and less resistance is generated after folding.

[0028] Drone flight motion process:

[0029] 1. When the bat wings are retracted, Figure 2 As shown in the figure, the drone is in a quad-rotor flight state and can take off, land, and hover. At this time, because the bat wing is arranged between the upper and lower rotors, the bat wing will not block the downward thrust of the quad-rotor during the up and down movement of the drone. At the same time, the movement resistance generated by the folded bat wing is also smaller than that of the fixed wing.

[0030] 2. After the drone takes off vertically, the bat wings can be unfolded by driving the motor. Figure 3 In order to enable the bat wing to withstand greater buoyancy, the bat wing of the drone is unfolded and folded using a lead screw and nut for transmission, and the two left and right linear slide rails ensure the linear motion of the rotor and the stability of the structure.

[0031] 3. When the drone is in level flight, Figure 4 As shown, the bat wing provides lift, and the quadrotor provides backward thrust. Therefore, it is necessary to realize the rotatable function of the quadrotor. The present application uses a rotor tilt motor to directly drive the rotation of the quadrotor, and arranges the rotor tilt motor below the rotor motor, which can reduce the influence of the structure on the thrust generated by the quadrotor and ensure the flight characteristics.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quad-rotor flight mechanism combined with foldable bat wings, comprising a body fixing plate and four spiral wings arranged on both sides of the body fixing plate, characterized in that: The body fixing plate is provided with two sliding support plates for fixing two spiral wings at corresponding ends, and the body fixing plate is also provided with a driving mechanism for driving the two sliding support plates to move toward / backwards; Bat wing frames are respectively arranged on the two sliding support plates on the same side of the body fixed plate, and bat wings are arranged between the bat wing frames arranged opposite to each other. When the two sliding support plates move toward / backwards, the bat wings are folded / unfolded accordingly; The driving mechanism includes a lead screw, a nut fixed on the sliding support plate and matched with the lead screw, and a driving motor driving the lead screw to rotate; The body fixing plate is also provided with a linear slide rail arranged in parallel, and the sliding support plate is provided with a linear bearing matched with the linear slide rail; The spiral wing is fixed on the fixed plate of the machine body through a fixed frame, and the spiral wing comprises a propeller and a rotor motor fixed on the fixed frame for driving the propeller to rotate.

2. The quadrotor flight mechanism combined with foldable bat wings according to claim 1, characterized in that: The fixed frame comprises a first rod fixed on the sliding support plate and a second rod vertically arranged with respect to the first rod, and the spiral wing is fixed on the end of the second rod.

3. The quadrotor flight mechanism combined with foldable bat wings according to claim 1, characterized in that: The fixed frame is also provided with a rotor tilting motor for driving the rotor to tilt.

4. The quadrotor flight mechanism combined with foldable bat wings according to claim 1, characterized in that: The bat-wing frames arranged on both sides of the sliding support plate are an integrated structure.

5. The quadrotor flight mechanism combined with foldable bat wings according to claim 1, characterized in that: The bat wings are made of soft material.

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