Unmanned aerial vehicle for low-energy-consumption adsorption hovering by using flexible surface

Abstract

The utility model relates to an unmanned aerial vehicle for low-energy-consumption adsorption hovering by using a flexible surface, which comprises an unmanned aerial vehicle assembly for taking off and landing, one side of the unmanned aerial vehicle assembly is provided with an adsorption mechanism capable of being unfolded or folded, and one end of the unmanned aerial vehicle assembly is provided with a driving mechanism for controlling the adsorption mechanism to be unfolded or folded; van der Waals force can be generated between the adsorption mechanism and the surface of an adsorbed object for adsorption, and the contact area and pressure between the adsorption surface and the surface of the adsorbed object are accurately controlled through contraction of the air bag under the synergistic effect of the physical structure, so that the Van der Waals force reaches the optimal adsorption strength; mechanical pressurization or suction cup pressure maintaining adsorption is not needed, and energy consumption is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to unmanned plane technical field, concretely relates to a kind of unmanned plane of low energy consumption adsorption suspension using flexible surface. BACKGROUND

[0002] In the era of rapid development of today's technology, unmanned plane technology has become an important tool in various industries, including flight surveying field. Surveying work is applied in civil and scientific research fields, such as disaster monitoring, private investigation, environmental protection, atmospheric research, geological exploration, weather observation, geodetic survey, pesticide spraying and forest fire prevention.

[0003] Application announcement No. CN221436252U discloses a bionic adhesion pad suitable for vacuum and high temperature environment. According to the description and drawings, the bionic adhesion pad is made of high-temperature-resistant polymer substrate through precise manufacturing, has a micro-column array structure, can form good contact with smooth surface, and realizes adhesion and transportation of the bionic adhesion pad and the surface by Van der Waals force. The microstructure ensures the discrete distribution of the contact area, increases the circumference of the contact area, and further increases the adhesion work required to overcome the crack propagation during interface separation, thereby enhancing the stability of adhesion.

[0004] Although the concept of adsorptive unmanned plane is relatively advanced, most of the adsorptive unmanned planes currently used adopt the method of using motor air pump combined with suction cup for hovering and adsorbing, and the method of adsorbing and hanging on wall or ceiling is used to reduce the energy consumption of unmanned plane during operation or shooting. However, according to the above-mentioned adsorption technology path, the adsorption time is not long enough, and the suction cup cannot be effectively stored, which will affect the flight control of the unmanned plane. In addition, the method of adsorbing by suction cup has some difficulties in wall adhesion control, which brings inconvenience to the adsorption process. SUMMARY

[0005] The utility model mainly aims at the problems existing in the adsorption and hovering of unmanned plane, and invents a kind of unmanned plane of low energy consumption adsorption suspension using flexible surface. The straight column on the flexible panel can generate Van der Waals force to adsorb the surface of the adsorbed object, and the synergistic effect of this physical structure can accurately control the contact area and pressure between the adsorption surface and the surface of the adsorbed object by air bag contraction, so that the Van der Waals force reaches the best adsorption strength, and it is not necessary to rely on mechanical pressurization or suction cup pressure maintaining adsorption.

[0006] The utility model discloses a kind of unmanned plane of low energy consumption adsorption suspension using flexible surface, including the unmanned plane component for taking off and landing, the side of the unmanned plane component is equipped with the adsorption mechanism that can be deployed or stored, the end of the unmanned plane component is equipped with the drive mechanism for controlling adsorption mechanism deployment or storage.

[0007] As preferred, the unmanned aerial vehicle assembly comprises a first rotor support frame, a first driving motor, a main rotor, a second rotor support frame, a second driving motor and a sub rotor, the first rotor support frame is internally provided with the first driving motor, the end of the rotating shaft of the first driving motor is connected with the main rotor, the side wall of the first rotor support frame is connected with a plurality of second rotor support frames, each of the second rotor support frames is internally provided with the second driving motor, and the end of the rotating shaft of each of the second driving motor is connected with the sub rotor.

[0008] As preferred, the bottom of the first driving motor extends downwardly and is provided with a columnar shell, the inside of the columnar shell is used for placing electrical elements and lithium batteries, the bottom of the columnar shell is provided with a landing support, and the middle of the landing support is provided with a camera element.

[0009] As preferred, the side wall of the first rotor support frame is provided with a plurality of frame feet, the bottom of each of the frame feet is connected with a first annular support, the bottom of the first annular support is sequentially connected with an annular support plate and a second annular support, and the suction mechanism is connected to the side of the annular support plate.

[0010] As preferred, the suction mechanism comprises a plurality of air bags and a flexible panel, one side of the plurality of air bags is connected to the side of the annular support plate, the flexible panel is in a circular arc shape in a non-stressed state, the surface of the flexible panel is provided with a plurality of straight columns and a panel exhaust port, the flexible panel is attached to the other side surface of the plurality of air bags, the air inlet of each of the air bags is connected to the driving mechanism through the inside of the annular support plate, the air outlet of each of the air bags is connected to one end of the air valve assembly capable of automatic exhaust, and the other end of the air valve assembly is connected to the panel exhaust port through a pipeline.

[0011] As preferred, the material of the flexible panel is silica gel, and the material of the straight column is fluorine rubber, perfluoro ether rubber, fluorosilicone rubber or high-temperature-resistant silicone rubber.

[0012] As preferred, the driving mechanism comprises a plurality of micro air pumps and a plurality of air pump pipelines, each of the micro air pumps is connected to the side of the columnar shell, and the air outlet of the micro air pump is connected to the air inlet of the air bag through the air pump pipeline.

[0013] As preferred, a first exhaust pipeline is arranged between adjacent air bags, a second exhaust pipeline is further arranged between each of the air bags and the flexible panel, one end of the first exhaust pipeline is connected to the air valve assembly, the other end of the first exhaust pipeline is connected to the second exhaust pipeline, the second exhaust pipeline is in a communication state with each of the panel exhaust ports, and the gas in the air bag cannot be discharged through the first exhaust pipeline or the second exhaust pipeline.

[0014] As preferred, the gas valve assembly comprises a gas valve body, a valve core, a metal spring and an electromagnet, the inside of the gas valve body is provided with a first gas passage and a second gas passage allowing gas to pass, the end of the second gas passage is connected with a gas valve pipeline, the inside of the second gas passage is provided with a slidable valve core and a metal spring for pressing the valve core, the inside of the second gas passage is further provided with an electromagnet for adsorbing the valve core, the end of the electromagnet and the valve core have a gap, and the valve core can block other flow into the inside of the second gas passage after being attached to the top of the second gas passage

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1、The straight column on the flexible panel and the surface of the adsorbed object can generate van der Waals force for adsorption, and the synergistic effect of this physical structure precisely controls the contact area and pressure of the adsorption surface and the surface of the adsorbed object through the contraction of the air bag, so that the van der Waals force reaches the optimal adsorption strength, without relying on mechanical pressurization or adsorption of the suction cup pressure, and the energy consumption is low;

[0017] 2、The air bag is used to realize the unfolding and storage of the flexible panel, the effective adsorption area of the adsorption mechanism after unfolding is increased, and the flexible panel is as close as possible to the first annular support and the second annular support when being in the storage state. Therefore, the annular design can reduce the resistance in the flight process and improve the endurance of the unmanned aerial vehicle;

[0018] 3、The gas released by the contraction of the air bag is introduced into the adsorption surface of the flexible panel, the gas pressure of the exhaust gas of the air bag is ingeniously used to lift and destroy the van der Waals force layer, so as to realize low-energy consumption desorption, compared with the mechanical force peeling of the traditional scheme, the structural damage or energy waste can be reduced. It has the characteristics of low delay response, the gas discharge can complete the interface separation instantaneously, the desorption response time is faster, and the emergency separation ability is higher. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the air bag in the contraction state in the utility model;

[0020] Figure 2 It is a schematic view of the air bag in the inflation state in the utility model;

[0021] Figure 3 It is a partial perspective view of the utility model;

[0022] Figure 4 It is an enlarged view of the A area in the utility model; Figure 2

[0023] Figure 5 It is a connection schematic view of the first exhaust pipeline and the second exhaust pipeline in the utility model;​

[0024] Figure 6 It is the sectional view of the gas valve assembly of the utility model;

[0025] Figure 7 It is the schematic view of the state that the unmanned aerial vehicle is in adsorption suspension in the utility model.

[0026] Marked in the figure: 1, unmanned aerial vehicle assembly;11, first rotor support frame;12, first drive motor;13, main rotor;14, second rotor support frame;15, second drive motor;16, auxiliary rotor;17, cylindrical shell;18, landing support;19, camera element;111, frame foot;2, adsorption mechanism;21, air bag;22, flexible panel;221, straight column;222, panel exhaust port;3, drive mechanism;31, miniature air pump;32, air pump pipeline;4, first annular support;5, annular support plate;6, second annular support;7, gas valve assembly;71, gas valve pipeline;72, gas valve body;73, first gas path channel;74, second gas path channel;75, valve core;76, metal spring;77, electromagnet;8, first exhaust pipeline;9, second exhaust pipeline. DETAILED DESCRIPTION

[0027] The utility model will be further described in connection with the embodiment shown in the drawings:

[0028] As Figure 1 , Figure 2 and Figure 3 Indicated, a kind of unmanned aerial vehicle of low-energy consumption adsorption suspension using flexible face, including the unmanned aerial vehicle assembly 1 for take-off and landing.

[0029] The unmanned aerial vehicle assembly 1 includes first rotor support frame 11, first drive motor 12, main rotor 13, second rotor support frame 14, second drive motor 15 and auxiliary rotor 16, the inside of first rotor support frame 11 is equipped with first drive motor 12, the shaft end of first drive motor 12 is connected with main rotor 13, the side wall of first rotor support frame 11 is connected with several second rotor support frames 14, the inside of each second rotor support frame 14 is equipped with second drive motor 15, the shaft end of each second drive motor 15 is connected with auxiliary rotor 16. The bottom of first drive motor 12 extends downward and is equipped with cylindrical shell 17, the inside of cylindrical shell 17 is used to place electrical element and lithium battery, the bottom of cylindrical shell 17 is equipped with landing support 18, the middle part of landing support 18 is equipped with camera element 19.

[0030] In the process of taking off, the rotating shaft of the first driving motor 12 can drive the main rotor 13 to rotate, and the main rotor 13 can generate strong thrust in the process of high-speed rotation. In the process of flight, the second driving motor 15 can drive the auxiliary rotor 16 to rotate, and the thrust generated by the auxiliary rotor 16 is mainly to help the whole unmanned aerial vehicle to adjust the flight direction. Moreover, when one auxiliary rotor 16 is working and the other auxiliary rotor 16 is stopped, the effect of rotating in place can be generated, so as to facilitate the subsequent adsorption function.

[0031] In the embodiment, the side wall of the first rotor support frame 11 is provided with a plurality of frame feet 111, the bottom of the frame feet 111 is connected with a first annular support 4, the bottom of the first annular support 4 is sequentially connected with an annular support plate 5 and a second annular support 6, and the adsorption mechanism 2 is connected to the side of the annular support plate 5.

[0032] The cross sections of the first annular support 4 and the second annular support 6 are circular. Since the adsorption mechanism 2 is in the storage state, it is as close as possible to the first annular support 4 and the second annular support 6. Therefore, this annular design can reduce the resistance in the process of flight, and increase the effective adsorption area of the adsorption mechanism 2 after expansion.

[0033] Please refer to Figure 3 and Figure 4 It is shown that the side of the unmanned aerial vehicle assembly 1 is provided with an adsorption mechanism 2 which can be expanded or stored, and one end of the unmanned aerial vehicle assembly 1 is provided with a driving mechanism 3 for controlling the expansion or storage of the adsorption mechanism 2.

[0034] The adsorption mechanism 2 includes a plurality of air bags 21 and a flexible panel 22, one side of the plurality of air bags 21 is connected to the side of the annular support plate 5, the flexible panel 22 is in a circular arc shape in the state of not being stressed, the surface of the flexible panel 22 is provided with a plurality of straight columns 221 and a panel exhaust port 222, the flexible panel 22 is attached to the other side surface of the plurality of air bags 21, the air inlet of each air bag 21 penetrates the inside of the annular support plate 5 and is connected to the driving mechanism 3, the air outlet of each air bag 21 is connected to one end of an automatic exhaust air valve assembly 7, and the other end of the air valve assembly 7 is connected to the panel exhaust port 222 through a pipeline.

[0035] The material of the flexible panel 22 is silica gel, and the material of the straight column 221 is fluorine rubber, perfluoroether rubber, fluorosilicone rubber, or high-temperature-resistant silicone rubber. The surface roughness Ra of the surface of the straight column 221 is less than 0.1 μm. The array structure end of the straight column 221 forms a van der Waals force interaction with the adsorbed surface, and the van der Waals force is used to achieve adhesion fixation. The unit microstructure of the straight column 221 in the array of the straight column 221 ensures the discrete distribution of the contact area, increases the circumference of the contact area, and thus increases the adhesion work required to overcome the crack propagation when the interface separates, thereby enhancing the stability of the adhesion. According to the contact splitting principle, the discrete contact area prolongs the path of the desorption crack propagation, increases the work required to overcome the adhesion energy when desorption, and thus increases the stability of the adhesion.

[0036] The driving mechanism 3 includes a plurality of micro air pumps 31 and a plurality of air pump pipelines 32. Each micro air pump 31 is connected to the side surface of the columnar shell 17. The air outlet of the micro air pump 31 is connected to the air inlet of the air bag 21 through the air pump pipeline 32.

[0037] When it is necessary to deploy the flexible panel 22, the micro air pump 31 starts to work, and the external air is gradually filled into the inside of the air bag 21 through the air pump pipeline 32. The air bag 21 gradually becomes larger according to the set shape and has supportability. At this time, the flexible panel 22 is not easy to deform under the abutting of the air bag 21. Moreover, even if the adsorbed surface is slightly curved, the design of the air bag 21 and the deformable flexible panel 22 can still meet the corresponding adsorption function.

[0038] For the unmanned aerial vehicle in the adsorption state, the first driving motor 12, the main rotor 13, the second driving motor 15, and the auxiliary rotor 16 can be turned off, thereby improving the endurance of the unmanned aerial vehicle. Then, the detection and imaging of the target object are completed by using the camera element 19.

[0039] In this embodiment, please continue to refer to Figure 5 As shown in the figure, the first exhaust pipeline 8 is arranged between adjacent air bags 21. The second exhaust pipeline 9 is arranged between each air bag 21 and the flexible panel 22. One end of the first exhaust pipeline 8 is connected to the air valve assembly 7, and the other end of the first exhaust pipeline 8 is connected to the second exhaust pipeline 9.

[0040] It should be noted that the second exhaust pipeline 9 is in communication with each panel exhaust port 222, but the gas in the air bag 21 cannot be directly discharged through the first exhaust pipeline 8 or the second exhaust pipeline 9. That is, when the air bag 21 needs to be deflated, the gas can only be discharged to the inside of the first exhaust pipeline 8 through the air valve assembly 7, the first exhaust pipeline 8 is then discharged to the inside of the second exhaust pipeline 9, and the second exhaust pipeline 9 is then discharged through the panel exhaust port 222.

[0041] It should be noted that the preconditions for the airbag 21 to deflate is to release the adsorption hovering state. Then the useless gas is discharged by centralized flow guide. The whole unmanned aerial vehicle is rotated by the auxiliary rotor 16, and under the premise of twisting, the secondary use of airflow impact and sweeping to the contact interface along the microstructure gap between the straight columns 221 provides the required desorption force of the straight columns 221 on the flexible panel 22 and the surface desorption of the adsorbed object, and high-efficiency desorption is realized.

[0042] In the embodiment, please refer to Figure 6 The air valve assembly 7 includes an air valve body 72, a valve core 75, a metal spring 76 and an electromagnet 77, the inside of the air valve body 72 is provided with a first gas passage 73 and a second gas passage 74 allowing gas to pass through, the end of the second gas passage 74 is connected with an air valve pipeline 71, the inside of the second gas passage 74 is provided with a slidable valve core 75 and a metal spring 76 for pressing the valve core 75, and the inside of the second gas passage 74 is also provided with an electromagnet 77 for adsorbing the valve core 75, the end of the electromagnet 77 has a gap with the valve core 75, and the valve core 75 can block other flow into the inside of the second gas passage 74 after being attached to the top of the second gas passage 74.

[0043] When the electromagnet 77 is not powered, the metal spring 76 always presses the valve core 75, so that the valve core 75 is firmly attached to the side of the first gas passage 73, and the gas in the airbag 21 cannot flow into the inside of the second gas passage 74 through the first gas passage 73, at this time the whole airbag 21 is in a pressure maintaining state and has supporting force.

[0044] When the electromagnet 77 is powered, the electromagnet 77 begins to adsorb the valve core 75, and the adsorption force is greater than the elastic force of the metal spring 76, so that the valve core 75 is separated from the side of the first gas passage 73, and the gas in the airbag 21 directly flows into the inside of the second gas passage 74 through the first gas passage 73, and the second gas passage 74 is discharged into the inside of the first exhaust pipeline 8 through the air valve pipeline 71, at this time the whole airbag 21 is in a pressure relief state, and the flexible panel 22 restores the set ring and is in a storage state.

[0045] The working principle and use method of the utility model:

[0046] In the process of taking off, the rotating shaft of the first driving motor 12 can drive the main rotor 13 to rotate in the rotating process, and the main rotor 13 can generate strong thrust in the high-speed rotating process. In the process of flying, the second driving motor 15 can drive the auxiliary rotor 16 to rotate, and the thrust generated by the auxiliary rotor 16 is mainly to help the whole unmanned aerial vehicle to adjust the flight direction.

[0047] When the adsorption hovering state needs to be adjusted, the micro air pump 31 starts to work, gradually filling the inside of the air bag 21 with external air through the air pump pipeline 32, and the air bag 21 gradually expands according to the set shape until it has supporting properties. At this time, the flexible panel 22 is not easy to deform under the abutting of the air bag 21. Moreover, even if the adsorbed surface is slightly curved, the design of the air bag 21 and the deformable flexible panel 22 can still be appropriately adapted to these shapes. Then one of the sub-rotors 16 is in working state, and the other sub-rotor 16 is stopped, so as to generate the effect of rotating in place, so that the array structure of the straight columns 221 at the end forms a van der Waals force interaction with the adsorbed surface, and the biomimetic adhesive pad is fixed and adhered to the smooth surface by using the van der Waals force.

[0048] When the adsorption hovering state needs to be adjusted, the micro air pump 31 starts to work, gradually filling the inside of the air bag 21 with external air through the air pump pipeline 32, and the air bag 21 gradually expands according to the set shape until it has supporting properties. At this time, the flexible panel 22 is not easy to deform under the abutting of the air bag 21. Moreover, even if the adsorbed surface is slightly curved, the design of the air bag 21 and the deformable flexible panel 22 can still be appropriately adapted to these shapes. Then one of the sub-rotors 16 is in working state, and the other sub-rotor 16 is stopped, so as to generate the effect of rotating in place, so that the array structure of the straight columns 221 at the end forms a van der Waals force interaction with the adsorbed surface, and the biomimetic adhesive pad is fixed and adhered to the smooth surface by using the van der Waals force.

[0049] The specific embodiments described in the present application are only illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A drone for low energy adsorption hovering with a flexible surface, comprising a drone assembly (1) for take-off and landing, characterized in that, One side of the unmanned aerial vehicle assembly (1) is provided with an adsorption mechanism (2) capable of being unfolded or stored, and one end of the unmanned aerial vehicle assembly (1) is provided with a driving mechanism (3) for controlling the unfolding or storage of the adsorption mechanism (2).

2. The UAV using a flexible surface for low-power adsorptive hovering according to claim 1, wherein, The unmanned aerial vehicle assembly (1) comprises a first rotor support frame (11), a first driving motor (12), a main rotor (13), a second rotor support frame (14), a second driving motor (15) and a sub-rotor (16), the inside of the first rotor support frame (11) is provided with the first driving motor (12), the end of the rotating shaft of the first driving motor (12) is connected with the main rotor (13), the side wall of the first rotor support frame (11) is connected with a plurality of second rotor support frames (14), the inside of each second rotor support frame (14) is provided with a second driving motor (15), and the end of the rotating shaft of each second driving motor (15) is connected with a sub-rotor (16).

3. The UAV using a flexible surface for low-power adsorption hovering according to claim 2, wherein, The bottom of the first driving motor (12) extends downwardly and is provided with a columnar shell (17), the inside of the columnar shell (17) is used for placing electrical elements and lithium batteries, and the bottom of the columnar shell (17) is provided with a landing support (18), and the middle part of the landing support (18) is provided with a camera element (19).

4. The UAV using a flexible surface for low energy adsorption hovering according to claim 3, wherein, The side wall of the first rotor support frame (11) is provided with a plurality of frame feet (111), the bottom of the frame foot (111) is connected with a first annular support (4), the bottom of the first annular support (4) is sequentially connected with an annular support plate (5) and a second annular support (6), and the adsorption mechanism (2) is connected to the side of the annular support plate (5).

5. The UAV using a flexible surface for low-power adsorption hovering according to claim 4, wherein, The adsorption mechanism (2) comprises a plurality of air bags (21) and a flexible panel (22), one side of the air bag (21) is connected to the side of the annular support plate (5), the flexible panel (22) is in a circular arc shape in a non-stressed state, the surface of the flexible panel (22) is provided with a plurality of straight columns (221) and a panel exhaust port (222), the flexible panel (22) is attached to the other side surface of the plurality of air bags (21), the air inlet of each air bag (21) is connected to the driving mechanism (3) through the inside of the annular support plate (5), the air outlet of each air bag (21) is connected to one end of an automatic exhaust air valve assembly (7), and the other end of the air valve assembly (7) is connected to the panel exhaust port (222) through a pipeline.

6. The UAV using a flexible surface for low-power adsorption hovering according to claim 5, wherein, The material of the flexible panel (22) is silica gel, and the material of the straight column (221) is fluorine rubber, perfluoro ether rubber, fluorosilicone rubber or high-temperature-resistant silicone rubber.

7. The UAV using a flexible surface for low-power adsorption hovering according to claim 6, wherein, The driving mechanism (3) comprises a plurality of micro air pumps (31) and a plurality of air pump pipelines (32), each micro air pump (31) is connected to the side of the columnar shell (17), and the air outlet of the micro air pump (31) is connected to the air inlet of the air bag (21) through the air pump pipeline (32).

8. The UAV using a flexible surface for low-power adsorption hovering according to claim 7, wherein, First exhaust pipeline (8) is equipped between adjacent air bags (21), and second exhaust pipeline (9) is further equipped between each air bag (21) and flexible panel (22), one end of first exhaust pipeline (8) is connected to air valve assembly (7), the other end of first exhaust pipeline (8) is connected to second exhaust pipeline (9), second exhaust pipeline (9) is in communication state with each panel exhaust port (222), and air in air bag (21) cannot be directly discharged through first exhaust pipeline (8) or second exhaust pipeline (9).

9. The UAV using a flexible surface for low-power adsorption hovering according to claim 8, wherein, The air valve assembly (7) includes an air valve body (72), a valve core (75), a metal spring (76) and an electromagnet (77), the inside of the air valve body (72) is provided with a first gas passage (73) and a second gas passage (74) allowing gas to pass through, the end of the second gas passage (74) is connected with the air valve pipeline (71), the inside of the second gas passage (74) is provided with a valve core (75) capable of sliding and a metal spring (76) for compressing the valve core (75), the inside of the second gas passage (74) is further provided with an electromagnet (77) for adsorbing the valve core (75), the end of the electromagnet (77) has a gap with the valve core (75), and the valve core (75) is in contact with the top of the second gas passage (74) to block other flow into the inside of the second gas passage (74).

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