Triphibian unmanned aerial vehicle

Abstract

The invention relates to the technical field of unmanned aerial vehicles, in particular to a water-land-air triphibian unmanned aerial vehicle which comprises a water-land-air unmanned aerial vehicle body and further comprises a positioning assembly, unmanned aerial vehicle blades are arranged at the top of the water-land-air unmanned aerial vehicle body, an underwater propeller is arranged on the rear side of the bottom of the water-land-air unmanned aerial vehicle body, and propeller blades are arranged on the back face of the underwater propeller. A working box is fixedly connected to the middle of the bottom of the water-land-air unmanned aerial vehicle body, the positioning assembly comprises first supporting springs, the first supporting springs are fixedly connected to the left side and the right side of the bottom in the working box, and a lifting shell is fixedly connected to the top ends of the first supporting springs. When the body of the water-land-air unmanned aerial vehicle makes contact with the water surface, the elastic arc-shaped plates make contact with the water surface and expand outwards, the contact area between the elastic arc-shaped plates and the water surface is increased, the weight of the body is dispersed, the local pressure is remarkably reduced, the unmanned aerial vehicle is prevented from sinking, the expanded elastic connecting plates form a structure similar to a hydrofoil, transverse stability is provided, and the rollover risk caused by waves is effectively resisted.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and more particularly to an amphibious UAV that can operate on land, sea, and air. Background Technology

[0002] "Air, land, and sea unmanned aerial vehicle (UAV)" is a relatively common and general term that refers to unmanned aerial vehicle (UAV) systems that can autonomously or remotely perform maneuvers and missions in three main media (air, surface / underwater, and land).

[0003] Chinese patent application CN202311666925.5 discloses an amphibious drone that can fly in the air, be propulsed underwater by a propeller, and travel on land / seabed by wheels. It has technical advantages such as relatively simple structure, convenient state switching, and considerable propulsion efficiency. However, when the drone is put into use, it will be damaged because the device cannot handle the impact force when it lands in the air and comes into contact with the water surface.

[0004] Therefore, how to provide a amphibious drone that can operate on land, sea, and air is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] One objective of this invention is to provide an amphibious drone that can withstand impact forces upon contact with the water surface by setting multiple sets of ball bearings and elastic arc plates, thereby protecting the drone body.

[0006] According to an embodiment of the present invention, an amphibious unmanned aerial vehicle (UAV) includes an amphibious UAV body and a positioning component. The top of the amphibious UAV body is provided with UAV propellers, the bottom rear side of the amphibious UAV body is provided with an underwater thruster, the back of the underwater thruster is provided with propeller blades, and a working box is fixedly connected to the middle of the bottom of the amphibious UAV body.

[0007] The positioning component includes:

[0008] Support spring one is fixedly connected to the bottom left and right sides of the work box. The top of support spring one is fixedly connected to the lifting housing. The bottom middle of the lifting housing is fixedly connected to the connecting rod. The bottom of the connecting rod is fixedly connected to the force-bearing disc seat. The middle of the lifting housing is fixedly connected to the partition. The outside of the partition is fixedly connected to the return spring. The end of the return spring away from the partition is fixedly connected to the sliding extension plate. The bottom of the work box is fixedly connected to the outside of support spring one. The top of the fixed frame is fixedly connected to the limit fixing block. Support spring one can support the bottom of the lifting housing.

[0009] Further, the rolling wheel telescopic assembly is composed of a fixed transverse plate, a liquid storage bag, a transmission pipe, a fixed cylinder, a second supporting spring, a piston plate, a lifting rod, a lifting seat and a force relieving rolling wheel.

[0010] The fixed transverse plate is fixedly connected to the top of the working box, the liquid storage bag is fixedly connected to the middle of the bottom of the fixed transverse plate, the transmission pipe is fixedly connected to the top of the liquid storage bag, the fixed cylinder is fixedly connected to the left and right sides of the bottom of the fixed transverse plate, the second supporting spring is fixedly connected to the top of the fixed cylinder, the piston plate is fixedly connected to the bottom end of the second supporting spring, the lifting rod is fixedly connected to the bottom of the piston plate, the lifting seat is fixedly connected to the bottom of the lifting rod, and the force relieving rolling wheel is rotatably connected to the left and right sides of the lifting seat.

[0011] Further, the expansion assembly is composed of a positioning frame, an elastic arc-shaped plate, a first connecting frame, a connecting arm plate, a second connecting frame, a bidirectional telescopic cylinder and a lifting driven frame.

[0012] The positioning frame is fixedly connected to the bottom of the body of the water, land and air unmanned aerial vehicle, the elastic arc-shaped plate is rotatably connected to the middle of the positioning frame, the first connecting frame is fixedly connected to the inner side of the elastic arc-shaped plate, the connecting arm plate is rotatably connected to the middle of the first connecting frame, the second connecting frame is rotatably connected to the side away from the first connecting frame of the connecting arm plate, the lifting driven frame is fixedly connected to the front and back of the force receiving disc seat, and the bidirectional telescopic cylinder is fixedly connected to the middle of the lifting driven frame.

[0013] Further, the force relieving assembly is composed of a limiting shell, a force relieving ball and an elastic connecting plate.

[0014] The limiting shell is fixedly connected to the bottom of the elastic arc-shaped plate, the force relieving ball is arranged at the bottom of the limiting shell, and the elastic connecting plate is fixedly connected to the outer side of the elastic arc-shaped plate.

[0015] Further, the bottom of the working box is provided with a moving groove for accommodating the lifting of the force receiving disc seat, the limiting fixed block is provided with a slope, the bottom and the top of the limiting fixed block are provided with arc corners, the bottom of the limiting fixed block is in contact with the top of the sliding extension plate, the bottom of the limiting fixed block can limit the top of the sliding extension plate, when the sliding extension plate rises with the lifting shell, the sliding extension plate can contact the arc corner of the bottom of the limiting fixed block and move upwards along the slope of the limiting fixed block, and gradually expands outwards in the process of elastic recovery of the return spring, when the sliding extension plate moves to the top of the limiting fixed block, the top of the limiting fixed block is in contact with the bottom of the sliding extension plate, and can limit the bottom of the sliding extension plate.

[0016] Further, the transmission pipe is connected with the liquid storage bag and the fixed cylinder respectively, the damping oil is arranged in the liquid storage bag, the piston plate is slidably connected with the inner wall of the fixed cylinder, and the rectangular slot is arranged in the bottom of the working box for accommodating the lifting seat, the hydraulic oil in the liquid storage bag can be guided into the fixed cylinder through the transmission pipe, the pressure on the upper side of the fixed cylinder is increased, the supporting spring II is stretched, and the piston plate drives the lifting rod, the lifting seat and the force relieving roller to descend.

[0017] Further, the two-way telescopic cylinder has a telescopic end, the two-way telescopic cylinder telescopic end is fixedly connected with the second connecting frame, and the second connecting frame can be telescoped to the two sides on the two-way telescopic cylinder.

[0018] Further, the number of the positioning frames, the elastic arc-shaped plates, the first connecting frames, the connecting arm plates and the second connecting frames is four, two positioning frames, two elastic arc-shaped plates, two first connecting frames, two connecting arm plates and two second connecting frames are arranged as a group, and two groups of the positioning frames, the elastic arc-shaped plates, the first connecting frames, the connecting arm plates and the second connecting frames are symmetrically distributed on the bottom of the water-air-ground unmanned aerial vehicle body, the two elastic arc-shaped plates in the same group are connected through the elastic connecting plates, the two elastic arc-shaped plates can be connected through the elastic connecting plates, the first connecting frames, the connecting arm plates, the second connecting frames, the two-way telescopic cylinders and the lifting driven frames are arranged, the four positioning frames, the elastic arc-shaped plates, the first connecting frames, the connecting arm plates and the second connecting frames are connected, so that they become a whole, and the impact force can be evenly distributed when the impact force is resisted.

[0019] Further, the small holes are arranged on the elastic connecting plates, the receiving grooves are arranged in the bottom of the working box for accommodating the lifting driven frame, the receiving grooves are communicated with the moving grooves, and the lifting driven frame can be lifted in the bottom of the working box.

[0020] The beneficial effects of the present application are as follows:

[0021] 1. When the water-air-ground unmanned aerial vehicle body contacts the water surface, the elastic arc-shaped plate contacts the water surface and expands outward, increases the contact area with the water surface, disperses the weight of the body, significantly reduces the local pressure, prevents the unmanned aerial vehicle from sinking, and the expanded elastic connecting plate forms a structure similar to a "hydrofoil", provides lateral stability, and effectively resists the risk of capsizing caused by waves.

[0022] 2. The present application converts the sliding friction between the body and the water into rolling friction through the force relieving roller, greatly reduces the resistance when entering the water and sliding, makes the landing more stable and the sliding more labor-saving, and the deformation ability of the elastic arc-shaped plate, the stretching of the two-way telescopic cylinder and the design of the small holes through which the water flows together absorb and dissipate the impact energy when entering the water, and protect the body structure.

[0023] 3、The present application, by setting the small hole on the elastic connecting plate can allow water flow into the inside space of the arc-shaped plate quickly, avoid forming a closed air cavity leading to uneven buoyancy or structural deformation under pressure, at the same time, the small hole can destroy the adsorption effect that may be generated, the rolling characteristics of the force-releasing ball can quickly guide the body to slide along the tangent direction of the water surface, reduce the fluid reaction force in the vertical direction, and effectively avoid the violent bounce or even overturn caused by high-speed water entry;

[0024] 4、The present application, when the water-land-air unmanned aerial vehicle takes off from the water surface, the rolling friction of the force-releasing ball continuously reduces the sliding resistance, accelerates and is more efficient, the small hole can quickly drain the accumulated water on the elastic arc-shaped plate, reduces the take-off weight, and by setting the small hole, the continuity of the water film can be destroyed, allowing air to enter, quickly releasing the adsorption force between the arc-shaped plate and the water surface, making the vertical take-off more smooth and labor-saving;

[0025] 5、The present application, when the water-land-air unmanned aerial vehicle needs to land on the ground, the elastic arc-shaped plate contacts the ground and rotates outward to provide a first-stage buffer, the impact force is extruded by the lifting shell to press the liquid storage bag, the hydraulic oil in the liquid storage bag enters the fixed cylinder through the transmission pipe to push the piston plate to move downward to compress the supporting spring two, forming a second-stage hydraulic buffer, the piston plate moving downward drives the force-releasing roller to contact the ground to provide support and convert sliding friction into rolling friction, forming a third-stage buffer, and the multiple buffering mode is used to protect the body during landing;

[0026] 6、The present application, when the lifting shell rises to contact the limiting fixed block, the sliding extension plate expands under the action of the reset spring to clamp the limiting fixed block, lock the position of the lifting shell, prevent the backflow of hydraulic oil, ensure that the force-releasing roller remains in the supporting position, provide a stable landing posture, and significantly reduce the damage risk to the unmanned aerial vehicle body and internal equipment;

[0027] 7、By increasing the bottom weight of the water-land-air unmanned aerial vehicle body, the gravity center of the whole machine is reduced, the ability to resist crosswinds during flight is improved, and the risk of rollover is reduced;

[0028] 8、When accidentally falling from a high altitude, the small hole on the elastic connecting plate allows high-speed airflow to pass through, avoiding the formation of a high-pressure air cushion area below, leading to rolling out of control, at the same time, the elastic arc-shaped plate and the connecting plate can provide certain aerodynamic damping and physical buffer to reduce the damage caused by falling to the ground. BRIEF DESCRIPTION OF DRAWINGS

[0029] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, and do not constitute a limitation of the present application. In the drawings:

[0030] Figure 1 is a schematic diagram of the overall structure of a water-land-air three-vehicle unmanned aerial vehicle according to the present application;

[0031] Figure 2 A working box structure diagram of a water-land-air three-way unmanned aerial vehicle according to the present application is provided;

[0032] Figure 3 An internal structure diagram of a working box of a water-land-air three-way unmanned aerial vehicle according to the present application is provided;

[0033] Figure 4 A structure diagram of a limiting fixing block of a water-land-air three-way unmanned aerial vehicle according to the present application is provided; Figure 3 An enlarged structure diagram of A in the middle is provided;

[0034] Figure 5 An internal structure diagram of a lifting shell of a water-land-air three-way unmanned aerial vehicle according to the present application is provided;

[0035] Figure 6 An internal structure diagram of a fixing cylinder of a water-land-air three-way unmanned aerial vehicle according to the present application is provided;

[0036] Figure 7 An internal structure diagram of a fixing cylinder of a water-land-air three-way unmanned aerial vehicle according to the present application is provided;

[0037] Figure 8 An internal structure diagram of a fixing cylinder of a water-land-air three-way unmanned aerial vehicle according to the present application is provided;

[0038] Figure 9 An enlarged structure diagram of B in the middle is provided; Figure 8 An enlarged structure diagram of B in the middle is provided;

[0039] Figure 10 An internal structure diagram of a fixing cylinder of a water-land-air three-way unmanned aerial vehicle according to the present application is provided;

[0040] Figure 11 An internal structure diagram of a fixing cylinder of a water-land-air three-way unmanned aerial vehicle according to the present application is provided;

[0041] Figure 12 An internal structure diagram of a fixing cylinder of a water-land-air three-way unmanned aerial vehicle according to the present application is provided;

[0042] In the figure: 1, amphibious aerial unmanned aerial vehicle body; 2, unmanned aerial vehicle propeller; 3, underwater propeller; 4, propeller blade; 5, working box; 6, positioning assembly; 601, supporting spring one; 602, lifting shell; 603, connecting rod; 604, force disc seat; 605, partition plate; 606, return spring; 607, sliding extension plate; 608, fixing frame; 609, limiting fixed block; 7, roller telescopic assembly; 701, fixed cross plate; 702, liquid storage bag; 703, transmission pipe; 704, fixed cylinder; 705, supporting spring two; 706, piston plate; 707, lifting rod; 708, lifting seat; 709, unloading roller; 8, expansion assembly; 801, positioning frame; 802, elastic arc plate; 803, connecting frame one; 804, connecting arm plate; 805, connecting frame two; 806, two-way telescopic cylinder; 807, lifting driven frame; 9, unloading assembly; 901, limiting shell; 902, unloading ball; 903, elastic connecting plate. DETAILED DESCRIPTION

[0043] The application will now be described in further detail with reference to the drawings. These drawings show only the essential features of the application and are therefore purely schematic. They show, in:

[0044] Example one

[0045] Reference Figures 1-6 The application provides a technical solution: an amphibious aerial unmanned aerial vehicle, comprising an amphibious aerial unmanned aerial vehicle body 1, further comprising a positioning assembly 6, the top of the amphibious aerial unmanned aerial vehicle body 1 is provided with an unmanned aerial vehicle propeller 2, the bottom rear side of the amphibious aerial unmanned aerial vehicle body 1 is provided with an underwater propeller 3, the back of the underwater propeller 3 is provided with a propeller blade 4, and the bottom middle of the amphibious aerial unmanned aerial vehicle body 1 is fixedly connected with a working box 5.

[0046] The positioning assembly 6 comprises:

[0047] The supporting spring one 601 is fixedly connected to the inner bottom left and right sides of the working box 5, the top end of the supporting spring one 601 is fixedly connected with a lifting shell 602, the bottom middle of the lifting shell 602 is fixedly connected with a connecting rod 603, the bottom of the connecting rod 603 is fixedly connected with a force disc seat 604, the inner middle of the lifting shell 602 is fixedly connected with a partition plate 605, the outer side of the partition plate 605 is fixedly connected with a return spring 606, the end of the return spring 606 away from the partition plate 605 is fixedly connected with a sliding extension plate 607, the inner bottom of the working box 5 is fixedly connected with a fixing frame 608 outside the supporting spring one 601, the top of the fixing frame 608 is fixedly connected with a limiting fixed block 609, and the supporting spring one 601 can support the bottom of the lifting shell 602.

[0048] The bottom of the working box 5 is provided with a moving groove for accommodating the lifting of the force disc seat 604, the limiting fixed block 609 is provided with an inclined surface, the bottom and the top of the limiting fixed block 609 are provided with arc corners, the bottom of the limiting fixed block 609 contacts the top of the sliding extension plate 607, the bottom of the limiting fixed block 609 can limit the top of the sliding extension plate 607, when the sliding extension plate 607 rises along with the lifting shell 602, the sliding extension plate 607 can contact the arc corner of the bottom of the limiting fixed block 609 and move upwards along the inclined surface of the limiting fixed block 609, and gradually expand outward in the elastic recovery process of the reset spring 606, when the sliding extension plate 607 moves to the top of the limiting fixed block 609, the top of the limiting fixed block 609 contacts the bottom of the sliding extension plate 607, and the bottom of the sliding extension plate 607 can be limited.

[0049] Embodiment two

[0050] Reference Figure 7 On the basis of embodiment one, the technical scheme of the application is provided: further comprising a roller telescopic assembly 7, the roller telescopic assembly 7 is composed of a fixed horizontal plate 701, a liquid storage bag 702, a transmission pipe 703, a fixed cylinder 704, a supporting spring two 705, a piston plate 706, a lifting rod 707, a lifting seat 708 and a force relieving roller 709.

[0051] The fixed horizontal plate 701 is fixedly connected to the inside of the working box 5 close to the top, the liquid storage bag 702 is fixedly connected to the middle of the bottom of the fixed horizontal plate 701, the transmission pipe 703 is fixedly connected to the top of the liquid storage bag 702, the fixed cylinder 704 is fixedly connected to the left and right sides of the bottom of the fixed horizontal plate 701, the supporting spring two 705 is fixedly connected to the top of the inside of the fixed cylinder 704, the piston plate 706 is fixedly connected to the bottom end of the supporting spring two 705, the lifting rod 707 is fixedly connected to the bottom of the piston plate 706, the lifting seat 708 is fixedly connected to the bottom of the lifting rod 707, and the force relieving roller 709 is rotatably connected to the left and right sides in the lifting seat 708, the lifting shell 602 can contact the bottom of the liquid storage bag 702 when rising, and the supporting spring two 705 can support the piston plate 706.

[0052] The transmission pipe 703 is connected to the inside of the liquid storage bag 702 and the fixed cylinder 704 at both ends, respectively, the damping oil is arranged in the liquid storage bag 702, the piston plate 706 is slidably connected with the inner wall of the fixed cylinder 704, the bottom of the working box 5 is provided with a rectangular groove for accommodating the lifting of the lifting seat 708, the hydraulic oil in the liquid storage bag 702 can be guided into the fixed cylinder 704 through the transmission pipe 703, the pressure on the upper side of the fixed cylinder 704 is increased, the supporting spring two 705 is stretched, and at the same time, the piston plate 706 drives the lifting rod 707, the lifting seat 708 and the force relieving roller 709 to descend.

[0053] Embodiment three

[0054] Reference Figures 8-12On the basis of embodiment two, the application provides a technical scheme: further comprising an expansion assembly 8, which is composed of a positioning frame 801, an elastic arc-shaped plate 802, a connecting frame one 803, a connecting arm plate 804, a connecting frame two 805, a bidirectional telescopic cylinder 806 and a lifting driven frame 807.

[0055] The positioning frame 801 is fixedly connected to the bottom corners of the water, land and air unmanned aerial vehicle body 1, the elastic arc-shaped plate 802 is rotationally connected to the middle part of the positioning frame 801, the connecting frame one 803 is fixedly connected to the inner side of the elastic arc-shaped plate 802, the connecting arm plate 804 is rotationally connected to the middle part of the inner side of the connecting frame one 803, the connecting frame two 805 is rotationally connected to the side of the connecting arm plate 804 away from the connecting frame one 803, the lifting driven frame 807 is fixedly connected to the front and back of the stress disc seat 604, and the bidirectional telescopic cylinder 806 is fixedly connected to the middle part of the lifting driven frame 807. When the stress disc seat 604 is lifted and moved, the lifting driven frame 807 can drive the bidirectional telescopic cylinder 806 to be synchronously lifted and moved.

[0056] Further comprising a force unloading assembly 9, which is composed of a limiting shell 901, a force unloading ball 902 and an elastic connecting plate 903.

[0057] The limiting shell 901 is fixedly connected to the bottom of the elastic arc-shaped plate 802, the force unloading ball 902 is arranged at the inner bottom of the limiting shell 901, and the elastic connecting plate 903 is fixedly connected to the outer side of the elastic arc-shaped plate 802. The force unloading ball 902 can freely roll in the limiting shell 901.

[0058] The bidirectional telescopic cylinder 806 has a telescopic end, the telescopic end of the bidirectional telescopic cylinder 806 is fixedly connected to the connecting frame two 805, and the connecting frame two 805 can be telescopically adjusted to the two sides on the bidirectional telescopic cylinder 806.

[0059] The number of the positioning frame 801, the elastic arc-shaped plate 802, the connecting frame one 803, the connecting arm plate 804 and the connecting frame two 805 is four, two positioning frames 801, elastic arc-shaped plates 802, connecting frame ones 803, connecting arm plates 804 and connecting frame twos 805 are arranged as a group, two groups of positioning frames 801, elastic arc-shaped plates 802, connecting frame ones 803, connecting arm plates 804 and connecting frame twos 805 are symmetrically distributed at the bottom of the water, land and air unmanned aerial vehicle body 1, and two elastic arc-shaped plates 802 in the same group are connected through the elastic connecting plate 903. The two elastic arc-shaped plates 802 can be connected through the elastic connecting plate 903. By arranging the connecting frame one 803, the connecting arm plate 804, the connecting frame two 805, the bidirectional telescopic cylinder 806 and the lifting driven frame 807, the four positioning frames 801, elastic arc-shaped plates 802, connecting frame ones 803, connecting arm plates 804 and connecting frame twos 805 can be connected to form a whole, so that the impact force can be evenly shared when the impact force is resisted.

[0060] The elastic connecting plate 903 is provided with two small holes penetrating through the two sides, the bottom of the working box 5 is provided with a receiving groove accommodating the lifting driven frame 807 to lift, the receiving groove is communicated with the moving groove, and the lifting driven frame 807 can lift at the bottom of the working box 5 and enter the inside of the working box 5 when lifting.

[0061] When the amphibious aerial vehicle body 1 lands from the air and contacts the water surface, the elastic arc-shaped plates 802 on the two sides of the bottom of the amphibious aerial vehicle body 1 contact the water surface and are impacted, at this time, the elastic arc-shaped plates 802 rotate outward in the positioning frame 801 at the bottom of the amphibious aerial vehicle body 1 when impacted, the distance between the two elastic arc-shaped plates 802 increases in the process of rotation, so that the bidirectional telescopic cylinder 806 is stretched, and at the same time, the elastic arc-shaped plates 802 expand outward compared with the bottom of the amphibious aerial vehicle body 1 when the bidirectional telescopic cylinder 806 is stretched, so that the limiting shell 901, the force relieving ball 902 and the elastic connecting plate 903 at the bottom of the elastic arc-shaped plate 802 contact the water surface, when the elastic connecting plate 903 contacts the water surface, the weight of the unmanned aerial vehicle can be dispersed due to the outward expansion of the elastic arc-shaped plate 802, so as to prevent the unmanned aerial vehicle from sinking due to excessive local pressure, the expanded elastic connecting plate 903 is similar to a “hydrofoil” and can provide lateral stability to resist the side turning caused by water surface fluctuation, when the amphibious aerial vehicle body 1 lands on the water surface, the force relieving ball 902 converts the sliding friction between the fuselage and the water into rolling friction, so as to significantly reduce the resistance, and the small holes on the elastic connecting plate 903 allow water to quickly enter the inside of the arc plate when entering the water, so as to avoid the formation of an air cavity to cause uneven buoyancy or structural deformation under pressure, in combination with the deformation capacity of the elastic arc-shaped plate 802, the impact energy is further absorbed to ensure the safety of the amphibious aerial vehicle body 1 when entering the water, when the amphibious aerial vehicle body 1 contacts the water surface at high speed, the upward reaction force is easily generated due to fluid inertia, so as to cause the fuselage to bounce violently or even overturn, by arranging the force relieving ball 902, the rolling property of the force relieving ball 902 can quickly guide the fuselage to slide along the tangent direction of the water surface, so as to reduce the fluid reaction force in the vertical direction and avoid the hard collision to cause loss of control.

[0062] When the amphibious aerial vehicle body 1 needs to slide on the water surface, the force relieving ball 902 can continuously roll to convert the sliding friction into rolling friction, so as to accelerate and save energy, and the small holes on the elastic connecting plate 903 guide the water flow to smoothly pass through the arc plate, so as to reduce the turbulent resistance.

[0063] When the water-land-air unmanned aerial vehicle body 1 needs to take off on the water surface, the small holes on the elastic connecting plate 903 can quickly drain the accumulated water between the elastic arc-shaped plates 802, reducing the weight of the fuselage. When the unmanned aerial vehicle takes off vertically from the water surface, the smooth bottom surface of the elastic arc-shaped plate 802 may form an "adsorption" effect with the water surface, and additional power is required to separate from the water surface. By setting small holes on the elastic connecting plate 903, the continuity of the water film can be broken, allowing air to enter the gap between the arc plate and the water surface, quickly releasing the adsorption force, making the takeoff smoother. When the water-land-air unmanned aerial vehicle body 1 needs to move underwater, by controlling the underwater propeller 3 and the propeller blade 4 to work, the water-land-air unmanned aerial vehicle body 1 can be pushed to move underwater;

[0064] When the amphibious aerial vehicle body 1 needs to land and contact the ground, the elastic arc-shaped plate 802 at the bottom of the amphibious aerial vehicle body 1 first contacts the ground, at this time, the elastic arc-shaped plate 802 at the bottom is stressed and rotates outward, and at the same time, the stress relief ball 902 at the bottom of the elastic arc-shaped plate 802 contacts the ground. When the stress relief ball 902 on the elastic arc-shaped plate 802 contacts the ground, the stress relief ball 902 can move away from the amphibious aerial vehicle body 1 on the ground. At the same time, the bidirectional telescopic cylinder 806 is lifted upward at the bottom of the amphibious aerial vehicle body 1, which can make the lifting driven frame 807 on the bidirectional telescopic cylinder 806 rise synchronously, and make the stress disc seat 604 at the rear side of the lifting driven frame 807 push the lifting shell 602 to rise in the working box 5. When the lifting shell 602 rises and contacts the limiting fixed block 609, it continues to move upward along the arc angle at the bottom of the limiting fixed block 609. The top of the lifting shell 602 can contact the liquid storage bag 702 and press it. Since the liquid storage bag 702 is provided with hydraulic oil, it can buffer the lifting shell 602 as a whole, and at the same time, it can buffer the elastic arc-shaped plate 802 synchronously, and buffer the force when the amphibious aerial vehicle body 1 contacts the ground. Similarly, when the water surface is contacted, it still has the same effect, so that the hydraulic oil in the liquid storage bag 702 is squeezed into the fixed cylinder 704 through the transmission pipe 703. At this time, the hydraulic oil is introduced into the top of the fixed cylinder 704, which can push the piston plate 706 to move downward in the fixed cylinder 704, and the supporting spring 705 is expanded, which can make the piston plate 706 move downward to move the lifting rod 707, the lifting seat 708 and the stress relief roller 709 out of the bottom of the working box 5, and make the stress relief roller 709 contact the ground. At this time, since the lifting shell 602 rises on the inclined surface inside the limiting fixed block 609, the limiting fixed block 609 cannot continuously position and press the sliding extension plate 607, and the restoring spring 606 gradually recovers the elastic force, so that the sliding extension plate 607 expands outward in the lifting shell 602, and the bottom of the lifting shell 602 contacts the top of the limiting fixed block 609. The position of the lifting shell 602 is fixed by the limiting fixed block 609. Since the position of the lifting shell 602 is fixed, the hydraulic oil in the fixed cylinder 704 cannot flow back to the liquid storage bag 702. At this time, the stress relief roller 709 is fixed at the lower side of the working box 5. When the stress relief roller 709 at the bottom of the amphibious aerial vehicle body 1 contacts the ground, the stress relief roller 709 can move on the ground, which can buffer the impact force when landing, so as to avoid damage to the device due to large impact force when the device lands;

[0065] When the water, land and air unmanned aerial vehicle body 1 is in the air for flight, by arranging multiple components below the water, land and air unmanned aerial vehicle body 1, the weight of the bottom of the water, land and air unmanned aerial vehicle body 1 can be increased, so that the water, land and air unmanned aerial vehicle body 1 is prevented from being rolled over due to strong wind during flight, and when the water, land and air unmanned aerial vehicle body 1 is out of control and falls in the air, the small holes on the elastic connecting plate 903 allow high-speed airflow to pass through the elastic connecting plate 903, so that a high-pressure air cushion area is prevented from being formed below the elastic connecting plate 903, the fuselage of the water, land and air unmanned aerial vehicle body 1 is maintained stable, a certain buffering function can be provided, and damage caused by falling of the water, land and air unmanned aerial vehicle body 1 is reduced.

[0066] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An amphibious unmanned aerial vehicle (UAV) comprising an amphibious UAV body (1), characterized in that: It also includes a positioning component (6), a drone propeller (2) is provided on the top of the amphibious unmanned aerial vehicle body (1), an underwater thruster (3) is provided on the rear side of the bottom of the amphibious unmanned aerial vehicle body (1), a propeller blade (4) is provided on the back of the underwater thruster (3), and a working box (5) is fixedly connected to the middle of the bottom of the amphibious unmanned aerial vehicle body (1). The positioning component (6) includes: Support spring 1 (601) is fixedly connected to the bottom left and right sides of the work box (5). The top of support spring 1 (601) is fixedly connected to the lifting housing (602). The bottom middle of the lifting housing (602) is fixedly connected to the connecting rod (603). The bottom of the connecting rod (603) is fixedly connected to the force-bearing disc seat (604). The middle of the lifting housing (602) is fixedly connected to the partition (605). The outside of the partition (605) is fixedly connected to the return spring (606). The end of the return spring (606) away from the partition (605) is fixedly connected to the sliding extension plate (607). The bottom of the work box (5) is fixedly connected to the outside of support spring 1 (601) and the top of the fixed frame (608) is fixedly connected to the limit fixing block (609). Support spring 1 (601) can support the bottom of the lifting housing (602).

2. The amphibious unmanned aerial vehicle (UAV) according to claim 1, characterized in that: It also includes a roller telescopic assembly (7), which is composed of a fixed cross plate (701), a liquid storage bladder (702), a transmission pipe (703), a fixed cylinder (704), a second support spring (705), a piston plate (706), a lifting rod (707), a lifting seat (708), and a stress-relieving roller (709); The fixed horizontal plate (701) is fixedly connected to the inside of the working box (5) near the top. The liquid storage bladder (702) is fixedly connected to the bottom middle of the fixed horizontal plate (701). The transmission pipe (703) is fixedly connected to the top of the liquid storage bladder (702). The fixed cylinder (704) is fixedly connected to the bottom left and right sides of the fixed horizontal plate (701). The second support spring (705) is fixedly connected to the top inside the fixed cylinder (704). The piston plate (706) is fixedly connected to the bottom end of the second support spring (705). The lifting rod (707) is fixedly connected to the bottom of the piston plate (706). The lifting seat (708) is fixedly connected to the bottom of the lifting rod (707). The unloading roller (709) is rotatably connected to the left and right sides inside the lifting seat (708). When the lifting housing (602) rises, it can contact the bottom of the liquid storage bladder (702). The second support spring (705) can support the piston plate (706).

3. The amphibious unmanned aerial vehicle (UAV) according to claim 2, characterized in that: It also includes an expansion assembly (8), which consists of a positioning frame (801), an elastic arc plate (802), a connecting frame one (803), a connecting arm plate (804), a connecting frame two (805), a bidirectional telescopic cylinder (806), and a lifting driven frame (807); The positioning frame (801) is fixedly connected to the four corners of the bottom of the amphibious unmanned aerial vehicle body (1). The elastic arc plate (802) is rotatably connected to the middle of the positioning frame (801). The first connecting frame (803) is fixedly connected to the inner side of the elastic arc plate (802). The connecting arm plate (804) is rotatably connected to the middle of the first connecting frame (803). The second connecting frame (805) is rotatably connected to the side of the connecting arm plate (804) away from the first connecting frame (803). The lifting driven frame (807) is fixedly connected to the front and back of the force-bearing disc seat (604). The bidirectional telescopic cylinder (806) is fixedly connected to the middle of the lifting driven frame (807). When the force-bearing disc seat (604) moves up and down, it can drive the bidirectional telescopic cylinder (806) to move up and down synchronously through the lifting driven frame (807).

4. The amphibious unmanned aerial vehicle according to claim 3, characterized in that: It also includes a force-relieving assembly (9), which is composed of a limiting shell (901), force-relieving balls (902) and an elastic connecting plate (903); The limiting shell (901) is fixedly connected to the bottom of the elastic arc plate (802), the stress-relieving ball (902) is disposed at the bottom of the limiting shell (901), the elastic connecting plate (903) is fixedly connected to the outside of the elastic arc plate (802), and the stress-relieving ball (902) can roll freely inside the limiting shell (901).

5. The amphibious unmanned aerial vehicle according to claim 4, characterized in that: The bottom of the work box (5) is provided with a moving groove to accommodate the lifting of the force-bearing disc seat (604). The limiting fixing block (609) is provided with an inclined surface. The bottom and top of the limiting fixing block (609) are provided with arc corners. The bottom of the limiting fixing block (609) contacts the top of the sliding extension plate (607). The bottom of the limiting fixing block (609) can limit the top of the sliding extension plate (607). When the sliding extension plate (607) rises with the lifting housing (602), it can contact the arc corner of the bottom of the limiting fixing block (609) and move upward along the inclined surface of the limiting fixing block (609). During the elastic recovery process of the return spring (606), it gradually expands outward. When the sliding extension plate (607) moves to the top of the limiting fixing block (609), the top of the limiting fixing block (609) contacts the bottom of the sliding extension plate (607) and can limit the bottom of the sliding extension plate (607).

6. The amphibious unmanned aerial vehicle according to claim 5, characterized in that: The two ends of the transmission pipe (703) are connected to the inside of the reservoir (702) and the fixed cylinder (704) respectively. The reservoir (702) is filled with damping oil. The piston plate (706) is slidably connected to the inner wall of the fixed cylinder (704). The bottom of the working box (5) is provided with a rectangular groove to accommodate the lifting seat (708). The hydraulic oil in the reservoir (702) can be introduced into the fixed cylinder (704) through the transmission pipe (703) and increase the pressure on the upper side of the fixed cylinder (704), causing the second support spring (705) to stretch. At the same time, the piston plate (706) drives the lifting rod (707), the lifting seat (708) and the unloading roller (709) to descend.

7. The amphibious unmanned aerial vehicle according to claim 6, characterized in that: The bidirectional telescopic cylinder (806) has a telescopic end, and the telescopic end of the bidirectional telescopic cylinder (806) is fixedly connected to the second connecting frame (805). The second connecting frame (805) can be extended and retracted on both sides of the bidirectional telescopic cylinder (806).

8. The amphibious unmanned aerial vehicle according to claim 7, characterized in that: The number of positioning frames (801), elastic arc plates (802), connecting frame one (803), connecting arm plate (804), and connecting frame two (805) are all four. Two of the positioning frames (801), elastic arc plates (802), connecting frame one (803), connecting arm plate (804), and connecting frame two (805) are set as a group. The two groups of positioning frames (801), elastic arc plates (802), connecting frame one (803), connecting arm plate (804), and connecting frame two (805) are symmetrically distributed on the bottom of the amphibious unmanned aerial vehicle body (1), and the two elastic arc plates in the same group are also arranged in a specific order. (802) are connected by elastic connecting plates (903). The elastic connecting plates (903) can connect the two elastic arc plates (802). By setting connecting frame one (803), connecting arm plate (804), connecting frame two (805), bidirectional telescopic cylinder (806) and lifting driven frame (807), the four positioning frames (801), elastic arc plates (802), connecting frame one (803), connecting arm plate (804) and connecting frame two (805) can be connected to form a whole, so that the impact force can be evenly distributed when resisting the impact force.

9. A amphibious unmanned aerial vehicle (UAV) according to claim 8, characterized in that: The elastic connecting plate (903) has small through holes on both sides. The bottom of the work box (5) has a storage slot for accommodating the lifting driven frame (807) to rise and fall. The storage slot is connected to the moving slot. The lifting driven frame (807) can rise and fall at the bottom of the work box (5). When rising, the lifting driven frame (807) can enter the interior of the work box (5).

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