Low-altitude aircraft with integrated safety protection structure

Abstract

The utility model discloses a low-altitude aircraft with an integrated safety protection structure, and belongs to the technical field of safety protection of unmanned aerial vehicles. A low-altitude aircraft with an integrated safety protection structure comprises a flight frame, a closed air flow cavity is formed in the flight frame, and the air flow cavity comprises a single air inlet end and a plurality of branch outlet ends; the gas cylinder is mounted on the flight frame through a fixing frame, and a gas outlet of the gas cylinder is communicated with the gas inlet end of the gas flow cavity; the air bag containing bins are distributed in the circumferential direction of the flight frame, an air bag is contained in each air bag containing bin in a compressed mode, and the air inlet ends of the air bags communicate with the air cylinders through the branch outlet ends of the airflow cavities; the air bag is inflated and unfolded to form a continuous protection structure wrapping the flying frame; and the trigger is mounted at the trigger port of the gas cylinder and is used for controlling the gas to be released to the gas flow cavity. The air bag and the flight frame can be integrally arranged, the space utilization rate is increased, and the overall weight of the flight frame is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the unmanned plane safety protection technical field, more specifically, relate to a low altitude aircraft with integrated safety protection structure. BACKGROUND

[0002] In recent years, the application range of unmanned plane is expanding, and the safety problem occurs from time to time. Unmanned plane equipment generally needs to be operated and maintained by professional companies, and can maintain stable flight state when using. If the operator handles improperly or the equipment fails in the air, it is easy to cause accidents; at the same time, with the increasing of the size of unmanned plane research and development and the increasing of the number of application, the personal injury and property loss caused by accidents are increasing.

[0003] At present, there are many products related to the safety of unmanned plane on the market. Most of the products are safety devices or anti-collision airbags with unmanned plane parachutes. But the existing low-altitude safety protection design of unmanned plane has the following defects:

[0004] 1. The installation device and the flight frame are independent of each other, which leads to weight increase and low space utilization;

[0005] 2. The shape of the airbag protection device after unfolding is irregular, which is easy to cause secondary collision risk;

[0006] 3. The safety device and the body structure lack functional integration design (for example, the airbag trigger and the body are not related) ;

[0007] Although there is a scheme to realize airbag unfolding through external gas cylinder, the pipeline arrangement is complex and affects the aerodynamic performance. INVENTION CONTENTS

[0008] The utility model provides a kind of low altitude aircraft with integrated safety protection structure, it can realize airbag and flight frame integrated setting, and improve space utilization and reduce flight frame overall weight.

[0009] The utility model provides a kind of low altitude aircraft with integrated safety protection structure, it can realize airbag and flight frame integrated setting, and improve space utilization and reduce flight frame overall weight.

[0010] As a further improvement of the utility model, the flight frame comprises a main support and a branch rod network extending along the fuselage axis; the main support is provided with a connecting rod, the two ends of the connecting rod are communicated with the outlet end of the airflow cavity and the corresponding air bag storage bin respectively, and the connecting rod is a hollow structure; wherein the gas inlet end of the airflow cavity receives the gas released by the gas cylinder and delivers the gas to each air bag storage bin through the connecting rod.

[0011] As a further improvement of the utility model, the branch rod network comprises a sub-wing connecting part and a main-wing connecting part; the sub-wing connecting part and the main-wing connecting part are both provided with a connecting hole penetrating through the flight frame, and the inner circumferential wall of the connecting hole is isolated from the airflow cavity.

[0012] As a further improvement of the utility model, when the plurality of air bags are unfolded, the plurality of air bags wrap the flight frame in the form of a spherical body, and the plurality of air bags form an enclosed inner cavity in the unfolded state, and the inner circumference of the inner cavity is greater than the outer circumference of the flight frame.

[0013] As a further improvement of the utility model, the output end of the air bag storage bin is provided with a bin opening, and the bin opening is kept closed under normal circumstances to ensure the sealing property of the air bag storage bin.

[0014] As a further improvement of the utility model, the number of the air bag storage bins is eight, and the air bag storage bins are uniformly distributed on the lateral side of the flight frame; the air bag is in the form of a short arc after being inflated and unfolded, and forms a spherical type wrapping structure.

[0015] As a further improvement of the utility model, the number of the air bag storage bins is four, and the air bag storage bins are uniformly distributed on the four peripheries of the middle part of the flight frame; the air bag is in the form of a long arc after being inflated and unfolded, and forms a four-direction wrapping structure.

[0016] As a further improvement of the utility model, the number of the air bag storage bins is two, and the air bag storage bins are symmetrically installed on the two sides of the middle part of the flight frame; the air bag is in the form of a hemisphere after being inflated and unfolded, and forms a two-direction wrapping structure.

[0017] As a further improvement of the utility model, the flight frame is made of carbon fiber material.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] The utility model discloses a carbon fiber flight frame integrated with an airflow cavity structure, which internally embeds the gas conveying channel of the gas cylinder and the air bag in the aircraft skeleton, effectively reducing the space occupation and air resistance caused by the traditional external pipeline. The main support and the branch rod network of the flight frame form a three-dimensional gas conveying system, and the hollow connecting rod realizes the rapid distribution of the gas from the central gas cylinder to the circumferential air bag, thereby ensuring the gas conveying efficiency and maintaining the structural integrity of the framework.

[0020] The protection device is deeply integrated with the flight frame, a continuous and uniform buffer interface is formed when the collision occurs, the secondary collision risk is significantly reduced, and the technical problems of the traditional external safety device of increasing weight and affecting the aerodynamic layout are solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0022] Figure 2 It is a top view structure schematic diagram of the utility model;

[0023] Figure 3 It is a side view partial section structure schematic diagram of the utility model;

[0024] Figure 4 It is a three-dimensional structure schematic diagram of the utility model Figure 3 It is an enlarged structure schematic diagram of the utility model at A (the frame section opening in the thickened part is a hollow pipeline);

[0025] Figure 5 It is a structure schematic diagram of the utility model in airbag unfolding state of embodiment one;

[0026] Figure 6 It is a structure schematic diagram of the utility model in airbag unfolding state of embodiment two;

[0027] Figure 7 It is a structure schematic diagram of the utility model in airbag unfolding state of embodiment three.

[0028] Mark explanation in drawing:

[0029] Flight frame 1, airflow cavity 11, auxiliary wing connecting part 12, main wing connecting part 13, main support 14, connecting rod 141, airbag storage bin 2, bin mouth 21, fixing frame 3, gas cylinder 4, trigger 5, airbag 6. DETAILED DESCRIPTION

[0030] Specific embodiment one: please refer to Figures 1-5 A low-altitude aircraft with integrated safety protection structure, including flight frame 1, airbag storage bin 2, fixing frame 3, gas cylinder 4, trigger 5 and airbag 6.

[0031] Airbag storage bin 2 is respectively installed on the circumferential side of flight frame 1; a plurality of airbags 6 are respectively installed and stored in airbag storage bin 2. In this embodiment, airbag storage bin 2 is respectively installed on eight directions of flight frame 1, so that a plurality of airbags 6 can form a spherical type completely wrapping flight frame 1 after inflation and ejection.

[0032] The fixed frame 3 is detachably connected to the middle part of the bottom end of the flight frame 1, and the gas cylinder 4 is installed in the fixed frame 3 to limit the gas cylinder 4 through the fixed frame 3. The gas outlet of the gas cylinder 4 is in communication with the flight frame 1. The trigger 5 is installed on the trigger port of the gas cylinder 4, and in this embodiment, the trigger 5 is connected with the gas cylinder 4 by using a high-speed electromagnetic valve to quickly respond to the triggering of the gas cylinder 4 for inflation.

[0033] Specifically, the flight frame 1 is integrally made of carbon fiber material, and the flight frame 1 includes a main support 14 extending along the axis of the fuselage and a network of branch rods connected with various functional components, which at least include wings, driving members, etc. in this embodiment. An airflow cavity 11 is formed in the frame body of the flight frame 1, and the airflow cavity 11 is provided with a single air inlet end and a plurality of outlet ends. The air inlet end of the airflow cavity 11 is in communication with the gas cylinder 4, and the plurality of outlet ends of the airflow cavity 11 are in communication with a plurality of corresponding air bags 6, so that when the gas cylinder 4 supplies gas into the airflow cavity 11, the gas flows along the trajectory of the airflow cavity 11 to the air bags 6 of the plurality of outlet ends, so as to realize the inflation and deployment of the air bags 6. It should be noted that, in addition to the air inlet end and the plurality of outlet ends of the airflow cavity 11 which can control the inflow and outflow of air, the rest of the airflow cavity 11 of the flight frame 1 is closed to the outside.

[0034] A plurality of auxiliary wing connecting parts 12 are arranged around the flight frame 1, and a plurality of opposite connecting holes are formed in the wall body of the aircraft frame 1 through the connecting holes, and the connecting holes are used to connect the corresponding auxiliary wings. It should be noted that the connecting holes formed through the flight frame 1 are formed with a wall body along the inner circumference of the connecting holes, so that the path of the connecting holes through the flight frame 1 is not in communication with the airflow cavity 11, and the sealing property of the path of the airflow cavity 11 is ensured. A main wing connecting part 13 is formed on the middle wall body of the flight frame 1, and a plurality of connecting holes identical to the auxiliary wing connecting part 12 are also formed on the side of the main wing connecting part 13, so as to realize the installation of the main wing and the auxiliary wing, and at the same time ensure the sealing property of the path of the airflow cavity 11.

[0035] The connecting rod 141 is arranged on the side of the main support 14 and is in communication with the corresponding air bag storage bin 2, the connecting rod 141 is a hollow rod, one end of the connecting rod 141 is in communication with the airflow cavity 11 in the main support 14, the other end of the connecting rod 141 is fixedly connected with the bottom end of the air bag storage bin 2 and is in communication with the air bag 6, so as to connect the airflow cavity 11 in the main support 14 with the air bag 6 in the air bag storage bin 2 through the connecting rod 141.

[0036] Specifically, the air bag storage bin 2 is installed on the corresponding connecting rod 141, and the bottom end of the air bag storage bin 2 is provided with a connecting port and communicates with the inner cavity of the connecting rod 141. The output end of the air bag storage bin 2 is provided with a bin opening 21, which is normally closed to ensure the sealing of the air bag storage bin 2. Among them, the air bag 6 is arranged in the air cavity storage bin 2 in a compressed manner, when the gas cylinder 4 supplies gas into the airflow cavity 11, the airflow flows along the airflow cavity 11 to the corresponding air bag 6, and at the same time the air bag 6 bursts the bin opening 21 to realize the release of the air bag 6.

[0037] In use, the built-in sealed bin opening maintains the stability of the air bag in a compressed state, and automatically bursts the bin opening under the action of gas pressure to ensure the balance between rapid response and sealing reliability. In addition, the combination of carbon fiber material and integrated airflow cavity not only reduces the overall weight, but also enhances the bending strength of the frame structure to realize the synergistic optimization of safety protection and flight performance.

[0038] Specifically, the middle bottom end of the flight frame 1 is provided with an air inlet end of the airflow cavity 11, the fixed frame 3 is arranged on the air inlet end of the flight frame 1, and the gas outlet of the gas cylinder 4 is detachably connected with the air inlet end in a sealed manner, so that the gas cylinder 4 is installed on the fixed frame 3, and the gas cylinder 4 and the airflow cavity 11 are in communication with each other.

[0039] Specifically, the trigger 5 includes an electronic sensing unit and a mechanical collision triggering unit, the electronic sensing unit is in communication connection with the control system of the aircraft, and is used for controlling the release of gas according to the attitude, height or collision signal. It should be noted that the trigger 5 is prior art in the technical field and will not be described here. Among them, the connecting end of the trigger 5 and the gas cylinder 4, the trigger 5 is connected with the gas cylinder 4 by using a high-speed electromagnetic valve.

[0040] Specifically, a plurality of air bags 6 are wrapped around the flight frame 1 after being expanded, and the inner circumference of the plurality of air bags 6 in the expanded state is greater than the outer circumference of the flight frame 1, so that the plurality of air bags 5 are expanded to completely wrap the flight frame 1. In this embodiment, the number of air bags 6 is eight, and each air bag 6 in the expanded state is in a short arc shape. The number of air bag storage bins 2 corresponds to the number of air bags 6, and the air bag storage bins 2 are arranged in four directions at both ends of the flight frame 1, so that the air bags 6 form eight short arc air bags in the expanded state, thereby completely wrapping the flight frame 1.

[0041] Working principle:

[0042] In use, when the trigger at the lower end of the flight frame is triggered due to collision or the like, the trigger is activated and the gas cylinder is gas-fed into the airflow cavity in the flight frame, and the gas is fed from the gas inlet end to the eight angles on the side, so that the eight-angle air bags are inflated. The inflated air bags are unfolded from the air bag storage compartment to achieve full wrapping of the flight frame through the unfolding of the eight-angle air bags.

[0043] Specific embodiment two: please refer to Figure 6 A low-altitude aircraft with an integrated safety protection structure, which is different from specific embodiment one in that the connecting rods 141 are installed around the middle part of the flight frame 1, and one end of each connecting rod 141 is provided with a corresponding air bag storage compartment 2. In this embodiment, the number of air bag storage compartments 2 is four, and each air bag storage compartment 2 is provided with a corresponding air bag 6. The number of air bags 6 is four, and each air bag 6 is in an unfolded state in the shape of a long arc, so that the air bags 6 form four long-arc-shaped air bags in four directions after unfolding, thereby completely wrapping the flight frame 1.

[0044] Specific embodiment three: please refer to Figure 7 A low-altitude aircraft with an integrated safety protection structure, which is different from specific embodiment one in that the connecting rods 141 are installed on both sides of the middle part of the flight frame 1, and one end of each connecting rod 141 is provided with a corresponding air bag storage compartment 2. In this embodiment, the number of air bag storage compartments 2 is two, and each air bag storage compartment 2 is provided with a corresponding air bag 6. The number of air bags 6 is two, and each air bag 6 is in an unfolded state in the shape of a hemisphere, so that the air bags 6 form two hemispherical air bags in two directions after unfolding, thereby completely wrapping the flight frame 1.

[0045] In use, the plurality of air bag storage compartments uniformly distributed in the circumferential direction embed the protection device into the frame body by pre-compression folding, and after triggering, the protection device is synchronously inflated and unfolded by the continuous airflow cavity to form a wrapping-type protection structure, avoiding the blind area caused by uneven unfolding of traditional independent air bags. Among them, the eight short-arc-shaped air bag scheme realizes full-circumferential spherical wrapping, the four long-arc-shaped air bags form a four-direction protection barrier, and the two hemispherical air bags provide key-direction buffering. The three configuration schemes can be flexibly adapted to different aircraft sizes and collision scene requirements.

Claims

1. A low altitude aircraft having an integrated safety containment structure, characterized by, The utility model relates to a kind of inflatable airbag and flight frame, including: Flight frame (1), closed airflow cavity (11) is equipped inside the flight frame (1), the airflow cavity (11) includes single gas inlet end and multiple branch outlet end; Gas cylinder (4) is installed on the flight frame (1) by fixing frame (3), the gas outlet of gas cylinder (4) is communicated with the gas inlet end of airflow cavity (11); Multiple airbag storage bin (2) are arranged circumferentially along the flight frame (1), each airbag storage bin (2) is compressed and stored with airbag (6), the gas inlet end of airbag (6) is communicated with gas cylinder (4) by the branch outlet end of airflow cavity (11);Airbag (6) forms continuous protective structure after inflation and expansion and wraps flight frame (1);And Trigger (5) is installed in the trigger port of gas cylinder (4), for controlling gas release to airflow cavity (11).

2. A low altitude vehicle with integrated safety shield according to claim 1, characterized in that: Flight frame (1) includes main support (14) extending along fuselage axis and branch rod network;Main support (14) is provided with connecting rod (141), and the two ends thereof are communicated with the outlet end of airflow cavity (11) and corresponding airbag storage bin (2) respectively, and the connecting rod (141) is hollow structure;Wherein, the gas inlet end of airflow cavity (11) receives the gas released by gas cylinder (4), and the gas is delivered to each airbag storage bin (2) by the connecting rod (141).

3. A low altitude vehicle having an integrated safety containment structure according to claim 2, wherein: The branch rod network includes vice wing connecting part (12) and main wing connecting part (13);The vice wing connecting part (12) and the main wing connecting part (13) are both provided with connecting hole penetrating through flight frame (1), and the inner circumferential wall of the connecting hole is isolated from airflow cavity (11).

4. The low altitude vehicle with integrated safety shield of claim 1, wherein: When multiple airbags (6) are expanded, multiple airbags (6) are wrapped around flight frame (1) in the form of a sphere, and multiple airbags (6) form an enclosed inner cavity in the expanded state, and the inner circumference of the inner cavity is greater than the outer circumference of flight frame (1).

5. A low altitude vehicle with integrated safety shield according to claim 1, characterized in that: The output end of airbag storage bin (2) is provided with bin mouth (21), which is kept closed under normal circumstances to ensure the sealing of airbag storage bin (2).

6. A low altitude vehicle having an integrated safety containment structure according to claim 5, wherein: The number of airbag storage bin (2) is eight, which is evenly distributed on the side of flight frame (1), and airbag (6) is inflated and expanded in the form of short arc to form a spherical wrapping structure.

7. A low altitude vehicle having an integrated safety containment structure according to claim 5, wherein: The number of airbag storage bin (2) is four, which is evenly distributed on the four sides of the middle part of flight frame (1), and airbag (6) is inflated and expanded in the form of long arc to form a four-direction wrapping structure.

8. A low altitude vehicle with integrated safety shield according to claim 5, characterized in that: The number of airbag storage bin (2) is two, which is symmetrically installed on the two sides of the middle part of flight frame (1), and airbag (6) is inflated and expanded in the form of hemisphere to form a two-direction wrapping structure.

9. The low altitude vehicle with integrated safety shield of claim 1, wherein: The flight frame (1) is made of carbon fiber material.

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