Positioning device for hydrogen cylinder of hydrogen fuel cell unmanned aerial vehicle

Abstract

The invention discloses a hydrogen fuel cell unmanned aerial vehicle hydrogen cylinder positioning device which comprises a front fixing plate, a rear fixing plate is installed on the rear portion of the front fixing plate through a connecting rod, a tightening sliding groove is formed in the surface of the front fixing plate, and a tightening sliding bolt is embedded in the tightening sliding groove. A tightening supporting rod is installed below the tightening sliding bolt through a bolt, a tightening sliding plate is slightly attached to the outer side of the tightening supporting rod, a tightening sliding plate is installed on the inner surface of the rear fixing plate through a tightening supporting block, a tightening protection plate is welded to one end of the tightening supporting rod, and a tightening wheel is installed in the tightening protection plate through a bearing; an adjusting sliding groove is formed in the surface of the front fixing plate, and an adjusting moving bolt is embedded in the adjusting sliding groove. By means of the supporting legs, the hydrogen cylinder support, the gas guide structure and the downward pressing top seat, the problems that according to an existing hydrogen fuel cell unmanned aerial vehicle hydrogen cylinder positioning device, the hydrogen cylinder is still installed at the upper position, the flight stability of an unmanned aerial vehicle is likely to be affected, the hydrogen cylinder is unstable after being installed and likely to shake in the flight process, and the unmanned aerial vehicle cannot work easily are solved. And rapid mounting and dismounting are not convenient.

Description

Technical Field

[0001] The invention relates to the field of hydrogen fuel cell drones, and in particular to a positioning device for a hydrogen cylinder of a hydrogen fuel cell drone. Background Art

[0002] As a clean and efficient energy technology, hydrogen fuel cells have received extensive attention and research in various application fields in recent years. Especially in the field of drones, hydrogen fuel cells have gradually become an important choice to replace traditional lithium batteries due to their high energy density and long flight time. However, due to the special properties of hydrogen as a fuel and the complexity of the drone flight environment, hydrogen fuel cell drones face a series of technical challenges in practical applications.

[0003] First of all, the storage and fixation of hydrogen cylinders is a key issue. The hydrogen stored in the hydrogen cylinder is a high-pressure gas. Once it is subjected to external impact or the cylinder moves, it may cause leakage or even explosion and other safety hazards. Therefore, how to ensure the stable positioning of the hydrogen cylinder during the rapid takeoff, landing and flight of the drone becomes an issue that needs to be considered in the design.

[0004] Traditional hydrogen cylinder fixing devices are mostly used in relatively stable application environments such as the ground or vehicles. However, when applied to UAVs in flight, it is necessary to consider the comprehensive requirements of multiple factors such as volume, weight and stability, which makes it difficult for existing technologies to fully meet the application needs of hydrogen fuel cell UAVs. Therefore, designing a hydrogen cylinder positioning device that can provide stable support during flight, is lightweight and has impact resistance is a technical problem that needs to be solved urgently in the current field of hydrogen fuel cell UAVs. However, the existing hydrogen cylinder positioning devices for hydrogen fuel cell UAVs still have the problem that the hydrogen cylinder is installed too high, which easily affects the flight stability of the UAV, the hydrogen cylinder is unstable after installation, and is prone to shaking during flight, and is inconvenient and inconvenient to install and disassemble quickly.

[0005] Therefore, it is very necessary to invent a positioning device for the hydrogen cylinder of a hydrogen fuel cell drone. Summary of the invention

[0006] The purpose of the present invention is to provide a positioning device for the hydrogen cylinder of a hydrogen fuel cell drone. By arranging supporting legs, a hydrogen cylinder bracket, a gas guide structure and a downward pressure top seat, the problems that the positioning device for the hydrogen cylinder of an existing hydrogen fuel cell drone still exists, such as the hydrogen cylinder is installed too high, which easily affects the flight stability of the drone, the hydrogen cylinder is unstable after installation, and is prone to shaking during flight, and is inconvenient and inconvenient to install and disassemble quickly, are solved.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: including a bottom support plate, a rotor bracket, a top support plate, a hydrogen fuel cell, a controller, a lifting rotor, a support leg, an extension seat, a hydrogen bottle bracket, a hydrogen bottle, an air guide pipe, a camera bracket and an air guide structure, and the rotor bracket is fixedly mounted on the surface of the bottom support plate, and the top support plate is fixedly mounted above the rotor bracket; the hydrogen fuel cell is fixedly mounted in the middle of the surface of the bottom support plate, and the controller is fixedly mounted on the surface of the top support plate, and the lifting rotor is respectively fixedly mounted on the top of the rotor bracket; the support legs are fixedly mounted on the bottom of the bottom support plate, and the extension seat is fixedly mounted on the inner side of the support legs, and the hydrogen bottle bracket is fixedly mounted on the inner side of the support legs; the hydrogen bottle is mounted inside the hydrogen bottle bracket, and the air guide structure is fixedly mounted on the middle part position at the bottom of the bottom support plate, and the hydrogen bottle is connected to the air guide structure through the air guide pipe; the camera bracket is fixedly mounted at both ends of the bottom of the bottom support plate.

[0008] The supporting leg includes a buffer leg, a lightweight slot, a connecting base and a buffer pad, and the lightweight slot is opened inside the buffer leg, and the connecting base is fixedly installed on the top of the buffer leg; the connecting base is fixedly installed on the bottom of the bottom support plate, and the buffer pad is fixedly installed on the bottom of the buffer leg; an extension seat is fixedly installed at 2\5 on the inner side of the buffer leg.

[0009] The hydrogen cylinder bracket includes a bottom rotating frame, a rotating shaft, a bottom bearing seat, a positioning groove, a downward pressing push rod and a downward pressing top seat, and the bottom rotating frame is installed at the buffer leg 1\6, and the rotating shaft enables the bottom rotating frame to rotate on the inner side of the buffer leg; the bottom bearing seat is fixedly installed on the top of the bottom rotating frame, and the downward pressing push rod is fixedly installed on the surface of the extension seat, and the positioning groove is fixedly installed on the surface of the downward pressing push rod; the downward pressing top seat is fixedly installed between the downward pressing push rod and the connecting base; the bottom bearing seat and the downward pressing top seat clamp the hydrogen cylinder therein.

[0010] The gas guide structure includes an air collecting chamber, a connecting interface and a pipe positioning frame, and the air collecting chamber is fixedly installed at the middle position of the bottom of the bottom support plate, and the air collecting chamber is connected to the hydrogen fuel cell through a pipe; the connecting interface is fixedly installed at the bottom of the air collecting chamber, and is connected to the air guide pipe through a joint; the pipe positioning frame is fixedly installed at the bottom of the air collecting chamber and is located on the inner side of the connecting interface, and its interior is connected to the air guide pipe.

[0011] The down-pressing top seat includes a connecting plate, a pressure cover, a telescopic frame, a stabilizing splint, a pipeline positioning port and a connecting frame, and the connecting plate is fixedly installed on the top of the down-pressing push rod, the pressure cover is fixedly installed on one end of the connecting plate, and is pressed on the top of the hydrogen cylinder; the telescopic frame is fixedly installed on the top of the pressure cover, and the stabilizing splint is fixedly installed on the top of the telescopic frame, and the pipeline positioning port is opened inside the stabilizing splint; the connecting frame is fixedly installed on the surface of the stabilizing splint, and is connected and fixed to the bottom of the connecting base.

[0012] The supporting legs are composed of four groups, and the buffering legs are made of aluminum alloy metal structure, and the buffering legs are bent with the middle part arched outward; the lightweight slots are made of several slots that penetrate the buffering legs, and the connecting base is connected to the buffering legs as a whole, and fixed to the bottom of the bottom supporting plate by bolts; the buffer pad is made of a rubber sleeve; the inner side of the buffering leg is arranged on the extension seat to form a supporting plane, which has the following functions: ① Provide support: The supporting legs are fixedly installed on the bottom of the bottom supporting plate to bear the weight of the UAV and maintain the stability of the UAV on the ground, especially playing a key role during takeoff and landing; ② Shock absorption and buffering: The buffering legs in the supporting legs can effectively absorb and alleviate the ground impact force through the internal buffer pads and lightweight slots, reduce the impact of vibration on the UAV, and thus protect the hydrogen fuel cell and other sensitive equipment; ③ Fixing and positioning of the hydrogen cylinder: The supporting legs are connected to the extension seat through the extension seat The hydrogen cylinder bracket plays the role of fixing the hydrogen cylinder, ensuring the stability of the hydrogen cylinder during flight and preventing displacement or damage caused by vibration or collision; ④ Maximizing space utilization: Placing the hydrogen cylinder on the inside of the support leg instead of in the center or top area of ​​the drone can more effectively utilize the structural space of the drone and avoid occupying the space of core components. This design provides more installation space and flexibility for other key components of the drone, such as batteries and controllers; ⑤ Lowering the center of gravity: Installing the hydrogen cylinder on the support leg can lower the overall center of gravity of the drone and improve flight stability. A lower center of gravity helps maintain balance during flight and reduces the risk of capsizing, especially in high wind speeds or when encountering sudden external forces during flight; ⑥ Improving safety: The hydrogen cylinder is installed on the support leg, away from the core electronic equipment and heat-generating components of the drone, which helps to improve overall safety and reduce the dangers caused by hydrogen leakage or collision.

[0013] The bottom bearing seat inside the hydrogen bottle bracket adopts a groove that matches the bottom of the hydrogen bottle, and the bottom bearing seat and the bottom rotating frame can rotate through the rotating shaft; the downward push rod adopts a group of electric push rods, and the downward push rod can drive the downward pressure top seat to move downward until it contacts the top of the hydrogen bottle; the positioning groove adopts an arc-shaped plastic card groove, and its curvature is consistent with the curvature of the hydrogen bottle body, which has the following functions: ① Fix the hydrogen bottle: The hydrogen bottle bracket firmly clamps the hydrogen bottle inside the bracket through its internal bottom bearing seat, downward pressure top seat, and positioning groove components to prevent it from being displaced or loosened due to vibration or movement during the operation of the drone; ② Provide rotation adjustment: The bottom end of the hydrogen bottle bracket The rotating frame is connected to the rotating shaft, so that the bracket can rotate on the inside of the buffer leg. This function makes the hydrogen cylinder more flexible and convenient to adjust the position when installing or replacing; ③ Ensure stability: Through the design of the downward push rod and the downward pressure top seat, the bracket can apply pressure on the top of the hydrogen cylinder, thereby further increasing the stability of the hydrogen cylinder and preventing the hydrogen cylinder from moving due to airflow or other external forces during flight; ④ Weight reduction and structural optimization: The design of the hydrogen cylinder bracket not only ensures the stable fixation of the hydrogen cylinder, but also optimizes the overall weight and structure through lightweight design, such as the groove that matches the bottom of the hydrogen cylinder with the bottom of the bottom bearing seat, and the close connection with other parts of the drone, making the drone lighter and more efficient.

[0014] The gas collecting chamber inside the gas guide structure adopts a rectangular hollow warehouse body, and a pipe is arranged inside the gas collecting chamber, which passes through the bottom support plate and is connected to the hydrogen fuel cell; four groups of threaded interfaces are arranged at the bottom of the gas collecting chamber, and are respectively connected and fixed with four groups of gas guide pipes; the pipe positioning frame adopts four groups of "L" brackets, and a groove is arranged inside the pipe positioning frame, and the curvature of the groove inside the pipe positioning frame is consistent with that of the gas guide pipe; the bottom of the groove inside the pipe positioning frame is provided with an adhesive sticker, which is bonded and fixed to the gas guide pipe, which has the following functions: ① Hydrogen transportation: the gas guide structure passes through its internal ① The gas collecting chamber guides and collects hydrogen from the hydrogen bottle, and then transports the hydrogen to the hydrogen fuel cell through the connecting interface and the gas pipe to ensure that the fuel cell can work stably; ② Airflow control and distribution: The gas collecting chamber can be used as an intermediate gas storage and distribution area to evenly distribute the hydrogen flow and avoid unstable airflow during transportation, thereby improving the efficiency and stability of the hydrogen fuel cell; ③ Fixation and protection of hydrogen pipelines: The pipeline positioning frame in the gas guide structure is used to fix the gas guide pipe to ensure that the pipeline will not loosen or be damaged due to vibration or other external forces during the flight of the drone. This not only ensures the safe transportation of hydrogen, but also protects the integrity of the pipeline system; ④ Interface connection and sealing: The connection interface ensures that the connection between the gas guide pipe and the gas collecting chamber can maintain good sealing, prevent hydrogen leakage, and improve the safety of the system.

[0015] The connecting plate and the pressure cover inside the downward pressure top seat can be moved downward by the downward pressure push rod until they touch the top of the hydrogen cylinder; the interior of the pressure cover is provided with an opening for the air duct to pass through, and when the connecting plate and the pressure cover move up and down, the telescopic frame can be extended and retracted; the pipeline positioning port is a slot for the air duct to pass through, and the stabilizing splint can be supported under the connecting base through the connecting frame and cannot move, and has the following functions: ① Fixation and stabilization of the hydrogen cylinder: the downward pressure top seat is connected to the downward pressure push rod through the connecting plate and the pressure cover. When the downward pressure push rod moves downward, the downward pressure top seat firmly presses the hydrogen cylinder to prevent any movement during the flight; ② Connection with other components: the downward pressure top seat is connected to the connecting base of the drone through the connecting frame to ensure that the top seat remains stable while applying pressure and will not be offset or fail due to external force; ③ Protection of the hydrogen delivery pipeline: an opening is provided inside the pressure cover to allow the air duct to pass through. The downward pressure top seat not only fixes the hydrogen cylinder, but also ensures the correct positioning of the gas duct, so that the hydrogen can be smoothly transported to the hydrogen fuel cell; ④ Adapt to hydrogen cylinders of different sizes: The downward pressure top seat has a telescopic frame and a stabilizing splint, which enables it to adapt to hydrogen cylinders of different sizes and provide uniform pressure around the bottle body to ensure that the hydrogen cylinder is always in a safe position.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The support legs of the present invention have the following functions: 1. Providing support: The support legs are fixedly installed at the bottom of the bottom support plate to bear the weight of the drone and maintain the stability of the drone on the ground, especially playing a key role during takeoff and landing; 2. Shock absorption and buffering: The buffer legs in the support legs can effectively absorb and alleviate the ground impact force through the internal buffer pads and lightweight slots, reduce the impact of vibration on the drone, and thus protect the hydrogen fuel cell and other sensitive equipment; 3. Fixing and positioning of the hydrogen cylinder: The support legs are connected to the hydrogen cylinder bracket through the extension seat to fix the hydrogen cylinder, ensure the stability of the hydrogen cylinder during flight, and prevent displacement or damage caused by vibration or collision; 4. Maximizing space utilization: The hydrogen cylinder is placed in a fixed position. The gas cylinder is on the inside of the support leg instead of in the center or top area of ​​the UAV, which can more effectively utilize the structural space of the UAV and avoid occupying the space of core components. This design provides more installation space and flexibility for other key components of the UAV, such as batteries and controllers; ⑤ Lower the center of gravity: The hydrogen cylinder is installed on the support leg to lower the overall center of gravity of the UAV and improve the stability of the flight. The lower center of gravity helps to maintain balance during flight and reduce the risk of capsizing, especially in high wind speeds or sudden external forces during flight; ⑥ Improve safety: The hydrogen cylinder is installed on the support leg, away from the core electronic equipment and heat-generating components of the UAV, which helps to improve the overall safety and reduce the dangers caused by hydrogen leakage or collision.

[0018] 2. The setting of the hydrogen bottle bracket of the present invention has the following functions: ① Fixing the hydrogen bottle: The hydrogen bottle bracket firmly clamps the hydrogen bottle inside the bracket through its internal bottom bearing seat, downward pressure top seat, and positioning groove and other components to prevent it from being displaced or loosened due to vibration or movement during the operation of the drone; ② Providing rotation adjustment: The bottom end rotating frame of the hydrogen bottle bracket is connected to the rotating shaft, so that the bracket can rotate on the inner side of the buffer leg. This function makes the hydrogen bottle more flexible when installed or replaced, and it is convenient to adjust the position; ③ Ensure stability: Through the design of the downward pressure push rod and the downward pressure top seat, the bracket can apply pressure on the top of the hydrogen bottle, thereby further increasing the stability of the hydrogen bottle and preventing the hydrogen bottle from moving due to airflow or other external forces during flight; ④ Reduce weight and optimize structure: The design of the hydrogen bottle bracket not only ensures the stable fixation of the hydrogen bottle, but also optimizes the overall weight and structure through lightweight design, such as the groove matching the bottom of the hydrogen bottle with the bottom of the bottom bearing seat, and the close connection with other parts of the drone, making the drone lighter and more efficient.

[0019] 3. The gas guide structure of the present invention has the following functions: ① Hydrogen delivery: the gas guide structure guides and collects hydrogen from the hydrogen bottle through the gas collecting chamber inside it, and then delivers the hydrogen to the hydrogen fuel cell through the connecting interface and the gas guide pipe to ensure that the fuel cell can work stably; ②

[0020] Airflow control and distribution: The gas chamber can be used as an intermediate gas storage and distribution area to evenly distribute the hydrogen flow and avoid unstable airflow during transportation, thereby improving the efficiency and stability of hydrogen fuel cells; ③ Fixation and protection of hydrogen pipelines: The pipeline positioning frame in the gas guide structure is used to fix the gas guide pipe to ensure that the pipeline will not loosen or be damaged due to vibration or other external forces during the flight of the drone. This not only ensures the safe transportation of hydrogen, but also protects the integrity of the pipeline system; ④ Interface connection and sealing: The connection interface ensures that the connection between the gas guide pipe and the gas chamber can maintain good sealing, prevent hydrogen leakage, and improve the safety of the system.

[0021] 4. The setting of the downward pressure seat of the present invention has the following functions: ① Fixation and stabilization of the hydrogen cylinder: the downward pressure seat is connected to the downward pressure push rod through the connecting plate and the pressure cover. When the downward pressure push rod moves downward, the downward pressure seat will firmly press the hydrogen cylinder (10) to prevent any movement during the flight; ② Connection with other components: the downward pressure seat is connected to the connecting base of the drone through the connecting frame to ensure that the seat remains stable while applying pressure and will not be offset or fail due to external forces; ③ Protection of the hydrogen delivery pipeline: an opening is provided inside the pressure cover to allow the air duct to pass through. The downward pressure seat not only fixes the hydrogen cylinder, but also ensures the correct positioning of the air duct so that the hydrogen can be smoothly delivered to the hydrogen fuel cell; ④ Adaptation to hydrogen cylinders of different sizes:

[0022] The push-down top mount features a telescoping frame and stabilizing clamps, allowing it to accommodate hydrogen cylinders of different sizes and provide even pressure around the cylinder, ensuring the cylinder is always in a secure position. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention.

[0025] Figure 3 It is a structural schematic diagram of the support leg and the hydrogen bottle bracket of the present invention.

[0026] Figure 4 It is a structural schematic diagram of the gas guide structure of the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the hydrogen bottle support after opening.

[0028] Figure 6 It is a structural schematic diagram of the downward pressing top seat of the present invention.

[0029] In the figure:

[0030] Bottom support plate 1, rotor bracket 2, top support plate 3, hydrogen fuel cell 4, controller 5, lifting rotor 6, support leg 7, buffer leg 71, lightweight slot 72, connecting base 73, buffer pad 74, extension seat 8, hydrogen bottle bracket 9, bottom rotating frame 91, rotating shaft 92, bottom bearing seat 93, positioning groove 94, downward push rod 95, downward pressure top seat 96, connecting plate 961, pressure cover 962, telescopic frame 963, stabilizing splint 964, pipeline positioning port 965, connecting frame 966, hydrogen bottle 10, air guide tube 11, camera bracket 12, air guide structure 13, gas collecting chamber 131, connecting interface 132, pipeline positioning frame 133. DETAILED DESCRIPTION

[0031] 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.

[0032] As attached Figure 1-6 As shown:

[0033] The present invention provides a positioning device for a hydrogen cylinder of a hydrogen fuel cell drone, comprising a bottom support plate 1, a rotor bracket 2, a top support plate 3, a hydrogen fuel cell 4, a controller 5, a lifting rotor 6, a support leg 7, an extension seat 8, a hydrogen cylinder bracket 9, a hydrogen cylinder 10, an air guide tube 11, a camera bracket 12 and an air guide structure 13, wherein the rotor bracket 2 is fixedly mounted on the surface of the bottom support plate 1, and the top support plate 3 is fixedly mounted above the rotor bracket 2; the hydrogen fuel cell 4 is fixedly mounted in the middle of the surface of the bottom support plate 1, and the controller 5 is fixedly mounted on the top support plate 3. The lifting rotor 6 is fixedly mounted on the surface of the upper support plate 3, and the lifting rotor 6 is fixedly mounted on the top of the rotor bracket 2; the support leg 7 is fixedly mounted on the bottom of the bottom support plate 1, and the extension seat 8 is fixedly mounted on the inner side of the support leg 7, and the hydrogen bottle bracket 9 is fixedly mounted on the inner side of the support leg 7; the hydrogen bottle 10 is installed inside the hydrogen bottle bracket 9, and the gas guide structure 13 is fixedly mounted on the middle part position at the bottom of the bottom support plate 1, and the hydrogen bottle 10 is connected to the gas guide structure 13 through the gas guide pipe 11; the camera bracket 12 is fixedly mounted at both ends of the bottom of the bottom support plate 1.

[0034] The supporting leg 7 includes a buffer leg 71, a lightweight slot 72, a connecting base 73 and a buffer pad 74, and the lightweight slot 72 is opened inside the buffer leg 71, and the connecting base 73 is fixedly installed on the top of the buffer leg 71; the connecting base 73 is fixedly installed on the bottom of the bottom support plate 1, and the buffer pad 74 is fixedly installed on the bottom of the buffer leg 71; an extension seat 8 is fixedly installed at 2\5 on the inner side of the buffer leg 71.

[0035] The hydrogen cylinder bracket 9 includes a bottom rotating frame 91, a rotating shaft 92, a bottom bearing seat 93, a positioning groove 94, a downward pressing push rod 95 and a downward pressing top seat 96, and the bottom rotating frame 91 is installed at the buffer leg 711\6, and the rotating shaft 92 enables the bottom rotating frame 91 to rotate on the inner side of the buffer leg 71; the bottom bearing seat 93 is fixedly installed on the top of the bottom rotating frame 91, and the downward pressing push rod 95 is fixedly installed on the surface of the extension seat 8, and the positioning groove 94 is fixedly installed on the surface of the downward pressing push rod 95; the downward pressing top seat 96 is fixedly installed between the downward pressing push rod 95 and the connecting base 73; the bottom bearing seat 93 and the downward pressing top seat 96 clamp the hydrogen cylinder 10 therein.

[0036] The gas guide structure 13 includes an air collecting chamber 131, a connecting interface 132 and a pipe positioning frame 133, and the air collecting chamber 131 is fixedly installed at the middle position of the bottom of the bottom support plate 1, and the air collecting chamber 131 is connected to the hydrogen fuel cell 4 through a pipeline; the connecting interface 132 is fixedly installed at the bottom of the air collecting chamber 131, and is connected to the air guide pipe 11 through a joint; the pipe positioning frame 133 is fixedly installed at the bottom of the air collecting chamber 131, and is located on the inner side of the connecting interface 132, and its interior is connected to the air guide pipe 11.

[0037] The downward pressing top seat 96 includes a connecting plate 961, a pressure cover 962, a telescopic frame 963, a stabilizing splint 964, a pipeline positioning port 965 and a connecting frame 966, and the connecting plate 961 is fixedly installed on the top of the downward pressing push rod 95, and the pressure cover 962 is fixedly installed at one end of the connecting plate 961 and pressed on the top of the hydrogen cylinder 10; the telescopic frame 963 is fixedly installed on the top of the pressure cover 962, and the stabilizing splint 964 is fixedly installed on the top of the telescopic frame 963, and the pipeline positioning port 965 is opened inside the stabilizing splint 964; the connecting frame 966 is fixedly installed on the surface of the stabilizing splint 964, and is connected and fixed to the bottom of the connecting base 73.

[0038] The main function of the hydrogen fuel cell drone hydrogen bottle positioning device is to provide a stable installation position for the drone's hydrogen bottle and ensure that hydrogen is smoothly and safely supplied to the hydrogen fuel cell, thereby providing power for the drone's flight. The device achieves stable positioning of the hydrogen bottle, safety of hydrogen transmission, and stability of the drone's overall structure through the coordinated work of multiple components such as the hydrogen bottle bracket, gas guide structure, downward pressure top seat, and support legs.

[0039] 1. Stable positioning of hydrogen cylinders

[0040] The hydrogen cylinder 10 is firmly installed in the hydrogen cylinder support 9. The hydrogen cylinder support includes a bottom rotating frame 91, a rotating shaft 92, a bottom bearing seat 93 and other components, and can be rotated on the inner side of the support leg 7 through the rotating shaft 92 to facilitate the installation and removal of the hydrogen cylinder. The bottom bearing seat 93 cooperates with the downward pressing top seat 96 to firmly clamp the hydrogen cylinder therein to prevent any displacement or loosening of the hydrogen cylinder during flight.

[0041] 2. Hydrogen transmission and control

[0042] The hydrogen in the hydrogen cylinder is connected to the gas collecting chamber 131 in the gas guiding structure 13 through the gas guiding pipe 11. The gas guiding structure ensures that the hydrogen in the hydrogen cylinder is stably delivered to the hydrogen fuel cell 4, thereby providing continuous power for the drone. The gas collecting chamber 131 is connected to the hydrogen fuel cell, and the position of the gas guiding pipe is fixed by the pipeline positioning frame 133 to ensure that no leakage or blockage occurs during the hydrogen transmission process.

[0043] 3. Stability and shock absorption of supporting legs

[0044] The support leg 7 includes a buffer leg 71, a lightweight slot 72, a connecting base 73 and a buffer pad 74. The buffer leg can effectively reduce shock when the drone lands, protecting the hydrogen cylinder and its bracket from external impact. An extension seat 8 is also installed on the inner side of the support leg to provide an additional support plane for the hydrogen cylinder bracket, further enhancing the stability of the device.

[0045] 4. The fixing function of the downward pressing top seat

[0046] The downward pressing seat 96 is controlled by the downward pressing push rod 95, and can move downward after the hydrogen cylinder is installed to firmly press the hydrogen cylinder into the hydrogen cylinder bracket. The connecting plate 961 and the pressure cover 962 in the downward pressing seat are responsible for the final fixation of the hydrogen cylinder, while the telescopic frame 963 and the stabilizing clamp 964 provide additional stabilizing support for the hydrogen cylinder when necessary, ensuring that the entire system remains stable during the flight and operation of the drone.

[0047] In summary, the hydrogen cylinder positioning device ensures that the hydrogen cylinder is always in a stable and safe state during the flight of the UAV through ingenious structural design and multiple fixing measures, and can continuously and stably supply hydrogen to the hydrogen fuel cell, thereby providing reliable power support for the long-term flight of the UAV.

[0048] In actual operation, the assembly and use of the hydrogen tank positioning device for hydrogen fuel cell drones are carried out in the following steps:

[0049] 1. Installation of hydrogen cylinder

[0050] First, the support is adjusted to a suitable angle by rotating the rotating frame 91 of the hydrogen bottle support 9. Then, the hydrogen bottle 10 is placed on the bottom support seat 93 of the support so that it fits tightly with the support seat.

[0051] 2. Connection of airway

[0052] After the hydrogen cylinder is installed, the gas pipe 11 is connected to the outlet of the hydrogen cylinder, and the gas pipe is fixed in a suitable position by the pipe positioning frame 133 to ensure that the hydrogen can flow smoothly into the gas collecting chamber 131 and finally be transported to the hydrogen fuel cell.

[0053] 3. Fixing of hydrogen cylinder

[0054] Finally, the top seat 96 is pressed down by pressing down the push rod 95 on the top seat 96, so that the connecting plate 961 and the gland 962 firmly fix the hydrogen bottle in the bracket. At this time, the telescopic frame 963 and the stabilizing clamping plate 964 further stabilize the upper part of the hydrogen bottle to ensure its safety during flight.

[0055] 4. Take-off and landing of drones

[0056] When the UAV takes off and lands, the buffer legs 71 and the buffer pads 74 in the support legs 7 can effectively absorb the impact force and protect the hydrogen cylinder and its bracket from damage.

[0057] Through the above specific implementation, the hydrogen fuel cell drone hydrogen cylinder positioning device can effectively ensure the stability and safety of the hydrogen cylinder during the flight of the drone, ensuring that hydrogen can be smoothly supplied to the fuel cell, thereby providing continuous power for the drone.

[0058] All kinds of components used in this application document are standard parts, and the specific connection methods of each part adopt mature conventional means such as sewing and gluing in the prior art. Each structure adopts conventional materials in the prior art, and no specific description is given here.

[0059] In summary: the positioning device of the hydrogen cylinder of the hydrogen fuel cell drone, by setting the supporting legs 7, the hydrogen cylinder bracket 9, the gas guide structure 13 and the downward pressure top seat 96, solves the problems that the hydrogen cylinder is installed too high in the existing positioning device of the hydrogen fuel cell drone, which easily affects the flight stability of the drone, the hydrogen cylinder is unstable after installation, and is prone to shaking during flight, and is inconvenient and inconvenient to install and disassemble quickly.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device for a hydrogen cylinder of a hydrogen fuel cell drone, comprising a bottom support plate (1), a rotor bracket (2), a top support plate (3), a hydrogen fuel cell (4), a controller (5), a lifting rotor (6), a support leg (7), an extension seat (8), a hydrogen cylinder bracket (9), a hydrogen cylinder (10), an air guide tube (11), a camera bracket (12) and an air guide structure (13), wherein the rotor bracket (2) is fixedly mounted on the surface of the bottom support plate (1), and the top support plate (3) is fixedly mounted above the rotor bracket (2); the hydrogen fuel cell (4) is fixedly mounted in the middle of the surface of the bottom support plate (1), and the controller (5) is fixedly mounted on the top support plate (1). The lifting rotor (6) is fixedly mounted on the surface of the bottom support plate (3), and the lifting rotor (6) is respectively fixedly mounted on the top of the rotor bracket (2); the support leg (7) is fixedly mounted on the bottom of the bottom support plate (1), and the extension seat (8) is fixedly mounted on the inner side of the support leg (7), and the hydrogen bottle bracket (9) is fixedly mounted on the inner side of the support leg (7); the hydrogen bottle (10) is mounted inside the hydrogen bottle bracket (9), and the gas guide structure (13) is fixedly mounted at the middle part position of the bottom of the bottom support plate (1), and the hydrogen bottle (10) is connected to the gas guide structure (13) through the gas guide pipe (11); the camera bracket (12) is fixedly mounted at both ends of the bottom of the bottom support plate (1).

2. A positioning device for a hydrogen tank of a hydrogen fuel cell drone as claimed in claim 1, characterized in that: The support leg (7) comprises a buffer leg (71), a lightweight slot (72), a connecting base (73) and a buffer pad (74), wherein the lightweight slot (72) is arranged inside the buffer leg (71), and the connecting base (73) is fixedly mounted on the top of the buffer leg (71); the connecting base (73) is fixedly mounted on the bottom of the bottom support plate (1), and the buffer pad (74) is fixedly mounted on the bottom of the buffer leg (71); an extension seat (8) is fixedly mounted at 2\5 on the inner side of the buffer leg (71).

3. A positioning device for a hydrogen tank of a hydrogen fuel cell drone as claimed in claim 1, characterized in that: The hydrogen bottle bracket (9) comprises a bottom rotating frame (91), a rotating shaft (92), a bottom bearing seat (93), a positioning groove (94), a downward pressing push rod (95) and a downward pressing top seat (96), and the bottom rotating frame (91) is installed at 1\6 of the buffer leg (71), and the rotating shaft (92) enables the bottom rotating frame (91) to rotate on the inner side of the buffer leg (71); the bottom bearing seat (93) is fixedly installed on the top of the bottom rotating frame (91), and the downward pressing push rod (95) is fixedly installed on the surface of the extension seat (8), and the positioning groove (94) is fixedly installed on the surface of the downward pressing push rod (95); the downward pressing top seat (96) is fixedly installed between the downward pressing push rod (95) and the connecting base (73); the bottom bearing seat (93) and the downward pressing top seat (96) clamp the hydrogen bottle (10) therein.

4. A positioning device for a hydrogen tank of a hydrogen fuel cell drone as claimed in claim 1, characterized in that: The gas guide structure (13) comprises a gas collecting chamber (131), a connection interface (132) and a pipeline positioning frame (133), wherein the gas collecting chamber (131) is fixedly mounted at the middle part position at the bottom of the bottom support plate (1), and the gas collecting chamber (131) is connected to the hydrogen fuel cell (4) via a pipeline; the connection interface (132) is fixedly mounted at the bottom of the gas collecting chamber (131), and is connected to the gas guide pipe (11) via a joint; the pipeline positioning frame (133) is fixedly mounted at the bottom of the gas collecting chamber (131), and is located on the inner side of the connection interface (132), and its interior is connected to the gas guide pipe (11).

5. The positioning device for a hydrogen tank of a hydrogen fuel cell drone as claimed in claim 1, characterized in that: The downward pressing top seat (96) includes a connecting plate (961), a pressure cover (962), a telescopic frame (963), a stabilizing splint (964), a pipeline positioning port (965) and a connecting frame (966), wherein the connecting plate (961) is fixedly mounted on the top of the downward pressing push rod (95), the pressure cover (962) is fixedly mounted on one end of the connecting plate (961) and pressed on the top of the hydrogen cylinder (10); the telescopic frame (963) is fixedly mounted on the top of the pressure cover (962), and the stabilizing splint (964) is fixedly mounted on the top of the telescopic frame (963), and the pipeline positioning port (965) is opened inside the stabilizing splint (964); the connecting frame (966) is fixedly mounted on the surface of the stabilizing splint (964), and is connected and fixed to the bottom of the connecting base (73).

6. A positioning device for a hydrogen tank of a hydrogen fuel cell drone as claimed in claim 2, characterized in that: The support legs (7) are four groups, and the buffer legs (71) are made of aluminum alloy metal structure, and the buffer legs (71) are bent, and the middle part is arched outward; the lightweight slots (72) are a plurality of slots that penetrate the buffer legs (71), and the connecting base (73) is connected to the buffer legs (71) as a whole and fixed to the bottom of the bottom support plate (1) by bolts; the buffer pad (74) is a rubber sleeve; the inner side of the buffer leg (71) is arranged on the extension seat (8) to form a support plane.

7. A positioning device for a hydrogen tank of a hydrogen fuel cell drone as claimed in claim 3, characterized in that: The bottom bearing seat (93) inside the hydrogen bottle bracket (9) adopts a groove matching the bottom of the hydrogen bottle (10), and the bottom bearing seat (93) and the bottom rotating frame (91) can rotate through the rotating shaft (92); the downward push rod (95) adopts a group of electric push rods, and the downward push rod (95) can drive the downward pressing top seat (96) to move downward until it contacts the top of the hydrogen bottle (10); the positioning groove (94) adopts an arc-shaped plastic card groove, and its curvature is consistent with the curvature of the bottle body of the hydrogen bottle (10).

8. A positioning device for a hydrogen tank of a hydrogen fuel cell drone as claimed in claim 4, characterized in that: The gas collecting chamber (131) inside the gas guiding structure (13) adopts a rectangular hollow chamber body, and a pipe is arranged inside the chamber, which passes through the bottom support plate (1) and is connected to the hydrogen fuel cell (4); four groups of threaded interfaces are arranged at the bottom of the gas collecting chamber (131), and are respectively connected and fixed to the four groups of gas guiding pipes (11); the pipe positioning frame (133) adopts four groups of "L" brackets, and a groove is arranged inside the pipe positioning frame (133), and the curvature of the groove inside the pipe positioning frame (133) is consistent with that of the gas guiding pipe (11); an adhesive sticker is arranged at the bottom of the groove inside the pipe positioning frame (133), and is adhesively fixed to the gas guiding pipe (11).

9. A positioning device for a hydrogen tank of a hydrogen fuel cell drone as claimed in claim 5, characterized in that: The connecting plate (961) and the pressure cover (962) inside the downward pressing top seat (96) can be moved downward by the downward pressing push rod (95) until they contact the top of the hydrogen cylinder (10); an opening is provided inside the pressure cover (962) for the air guide pipe (11) to pass through, and when the connecting plate (961) and the pressure cover (962) move up and down, the telescopic frame (963) can be telescoped; the pipeline positioning port (965) is a slot for the air guide pipe (11) to pass through, and the stabilizing splint (964) can be supported below the connecting base (73) through the connecting frame (966) and cannot move.

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