An unmanned aerial vehicle air transportation and airdrop system

Abstract

The present invention belongs to the field of unmanned aerial vehicles, and discloses an air transportation and airdrop system for unmanned aerial vehicles, which includes a cargo transmission system, a cargo hold airdrop system, an airdrop hatch system and a system controller; the cargo transmission system is arranged in the cargo hold of the unmanned aerial vehicle, and is used for loading an airdrop container into the cargo hold and driving the airdrop container to be transmitted in the cargo hold; the cargo hold airdrop system is arranged above the airdrop hatch of the cargo hold, and is used for supporting or unloading the airdrop container transmitted to above the airdrop hatch through the cargo transmission system; the airdrop hatch system is arranged at the bottom of the cargo hold and is connected to the airdrop hatch of the cargo hold, and is used for driving the opening and closing of the airdrop hatch; the system controller is connected to the cargo transmission system, the cargo hold airdrop system and the airdrop hatch system, and is used for driving and controlling the cargo transmission system, the cargo hold airdrop system and the airdrop hatch system. This air transportation and airdrop system for unmanned aerial vehicles realizes the movement and airdrop requirements of multiple airdrop containers in the cargo hold of the unmanned aerial vehicle, and improves the air transportation and airdrop efficiency of the unmanned aerial vehicle.

Description

Technical Field

[0001] The present invention belongs to the field of unmanned aerial vehicles and relates to an unmanned aerial vehicle air transportation and airdrop system. Background Art

[0002] Most of the current aircraft cargo systems are mainly involved in the form of air transportation in the field, less involved in the airdrop field, and even less in the unmanned aerial vehicle airdrop. However, in the strategic application of unmanned aerial vehicles, there is a need for both airdrop and air transportation, and a system that can quickly and intelligently ensure the transportation and aerial delivery of cargo boxes is required.

[0003] Currently, most unmanned aerial vehicles do not have the airdrop ability, and among the few unmanned aerial vehicles with airdrop ability, most are for the airdrop of single-piece cargo boxes, and manual or other external machinery is required to load the goods, resulting in a low working efficiency of the existing unmanned aerial vehicle air transportation and airdrop system. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned disadvantages of the low working efficiency of the existing unmanned aerial vehicle air transportation and airdrop system in the prior art, and provide an unmanned aerial vehicle air transportation and airdrop system.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An unmanned aerial vehicle air transportation and airdrop system includes a cargo transmission system, a cargo hold airdrop system, an airdrop hatch system, and a system controller; the cargo transmission system is arranged in the cargo hold of the unmanned aerial vehicle, and is used for loading an airdrop cargo box into the cargo hold and driving the airdrop cargo box to be transmitted in the cargo hold; the cargo hold airdrop system is arranged above the airdrop hatch of the cargo hold, and is used for supporting or unloading the airdrop cargo box transmitted to above the airdrop hatch through the cargo transmission system; the airdrop hatch system is arranged at the bottom of the cargo hold and is connected to the airdrop hatch of the cargo hold, and is used for driving the opening and closing of the airdrop hatch; the system controller is connected to the cargo transmission system, the cargo hold airdrop system, and the airdrop hatch system, and is used for driving and controlling the cargo transmission system, the cargo hold airdrop system, and the airdrop hatch system.

[0007] Optionally, the cargo transmission system includes a track device and a side guide rail device arranged on the floor of the cargo hold, and a plurality of airdrop cargo box driving devices arranged on the top plate of the hold; the track device is located inside the side guide rail device; the side guide rail device is used for guiding the airdrop cargo box in the cargo hold and vertically limiting the airdrop cargo box; the plurality of airdrop cargo box driving devices are all connected to the system controller, and the driving state of each airdrop cargo box driving device is controlled through the system controller, and the airdrop cargo box driving device is used for driving the airdrop cargo box to be transmitted on the track device.

[0008] Optionally, the cargo transmission system further includes a front stop device arranged on the floor of the cargo hold; the front stop device is located on one side of the track device and is used for stopping the contacted airdrop cargo box.

[0009] Optionally, the cargo transfer system further includes a plurality of lifting and lateral guide rails disposed on the floor of the cargo hold; the plurality of lifting and lateral guide rails are spaced inside the side guide rail device and are used to limit the airdrop cargo box on the side guide rail device, and the plurality of lifting and lateral guide rails are all connected to the system controller, and the lifting of each lifting and lateral guide rail is controlled by the system controller.

[0010] Optionally, the cargo hold airdrop system includes two brackets disposed on the floor of the cargo hold and above the airdrop hatch; the two brackets are disposed opposite to each other and are used to support or unload the airdrop cargo box; a bracket movement mechanism and a bracket drive device are disposed on each bracket, the bracket drive device is connected to the bracket through the bracket movement mechanism, and the bracket drive device is used to drive the bracket to move through the bracket movement mechanism; each bracket drive device is connected to the system controller, and the drive state of each bracket drive device is controlled by the system controller.

[0011] Optionally, the cargo hold airdrop system further includes two airdrop baffles on the floor of the cargo hold and above the airdrop hatch, and the two airdrop baffles are disposed opposite to each other.

[0012] Optionally, balls are disposed on the side of the bracket in contact with the airdrop cargo box.

[0013] Optionally, the airdrop hatch system includes an airdrop hatch guide rail and a power transmission mechanism disposed at the bottom of the cargo hold; the airdrop hatch guide rail is used to accommodate the airdrop hatch, the power transmission mechanism is connected to the airdrop hatch, and is used to drive the airdrop hatch to move in the airdrop hatch guide rail; the power transmission mechanism is connected to the system controller, and the drive state of the power transmission mechanism is controlled by the system controller.

[0014] Optionally, the power transmission mechanism includes a motor, bevel gears, a torsion tube, a gear and a rack; the output end of the motor is sequentially connected to the bevel gears, the torsion tube and the gear, the gear meshes with the rack, and the rack is disposed on the airdrop hatch.

[0015] Optionally, the motor is a motor with a brake.

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

[0017] The UAV air transportation and airdrop system of the present invention can load the airdrop container into the cargo hold through the setting of the cargo transmission system, drive the transmission of the airdrop container in the cargo hold, and at the same time, in combination with the setting of the cargo hold airdrop system, can support or unload the airdrop container transmitted to the upper part of the airdrop hatch, and in combination with the setting of the airdrop hatch system, realize the opening and closing of the airdrop hatch, thereby realizing the movement and airdrop requirements of multiple airdrop containers in the UAV cargo hold. And, based on the setting of the system controller, realize the drive control of the cargo transmission system, the cargo hold airdrop system and the airdrop hatch system, thereby realizing the unmanned loading and airdrop of the UAV air transportation and airdrop system, greatly improving the efficiency of UAV air transportation and airdrop.

[0018] Furthermore, a lifting and lateral guide rail for isolating the airdrop container is provided, which is lowered below the bottom plate of the container when the airdrop container moves and rises when the airdrop container moves to a fixed position to limit the airdrop container, effectively preventing the free movement of the airdrop container in the cargo hold.

[0019] Furthermore, an airdrop baffle is provided. During the process of the airdrop container exiting the cabin, there are airdrop baffles on the left and right sides of the airdrop container, and adjacent airdrop containers and airdrop container drive devices on the front and back sides to achieve an all-round anti-tipping function and ensure the smooth exit of the airdrop container from the airdrop hatch. Brief Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the UAV air transportation and airdrop system according to an embodiment of the present invention.

[0021] Figure 2 It is a schematic structural diagram of the cargo transmission system according to an embodiment of the present invention.

[0022] Figure 3 It is a schematic structural diagram of the cargo hold airdrop system according to an embodiment of the present invention.

[0023] Figure 4 It is a schematic installation position diagram of the airdrop hatch system according to an embodiment of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the airdrop hatch system according to an embodiment of the present invention.

[0025] Figure 6 It is a working flow chart of the UAV air transportation and airdrop system according to an embodiment of the present invention.

[0026] Figure 7 It is a schematic diagram of the change in the loading state of the #1 airdrop container according to an embodiment of the present invention.

[0027] Figure 8 It is a schematic diagram of the change in the loading state of the #2 airdrop container according to an embodiment of the present invention.

[0028] Figure 9Schematic diagram of the change in the loading state of the airdrop cargo box according to an embodiment of the present invention.

[0029] Figure 10 Schematic diagram of the air transportation state according to an embodiment of the present invention.

[0030] Figure 11 Flow chart of the airdrop of the airdrop cargo box according to an embodiment of the present invention.

[0031] Figure 12 Schematic diagram of the open state of the airdrop hatch according to an embodiment of the present invention.

[0032] Figure 13 Schematic diagram of the airdrop state of the airdrop cargo box according to an embodiment of the present invention.

[0033] Wherein: 1 - cargo transmission system; 2 - cargo hold airdrop system; 3 - airdrop hatch system; 4 - airdrop cargo box drive device; 5 - side guide device; 6 - front stop device; 7 - roller track device; 8 - lifting and transverse guide rail; 9 - ball device; 10 - bracket; 11 - airdrop baffle; 12 - airdrop hatch guide rail; 13 - power transmission mechanism; 14 - airdrop hatch. Detailed implementation manners

[0034] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0035] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0036] The following further describes the present invention in detail with reference to the accompanying drawings:

[0037] See Figure 1, in an embodiment of the present invention, an unmanned aerial vehicle (UAV) air transportation and airdrop system is provided, including a cargo transmission system 1, a cargo hold airdrop system 2, an airdrop hatch system 3, and a system controller; wherein, the cargo transmission system 1 is arranged in the cargo hold of the UAV, and is used for loading an airdrop container into the cargo hold and driving the airdrop container to be transmitted in the cargo hold; the cargo hold airdrop system 2 is arranged above the airdrop hatch 14 of the cargo hold, and is used for supporting or unloading the airdrop container transmitted to above the airdrop hatch 14 through the cargo transmission system 1; the airdrop hatch system 3 is arranged at the bottom of the cargo hold and is connected to the airdrop hatch 14 of the cargo hold, and is used for driving the opening and closing of the airdrop hatch 14; the system controller is connected to the cargo transmission system 1, the cargo hold airdrop system 2, and the airdrop hatch system 3, and is used for driving and controlling the cargo transmission system 1, the cargo hold airdrop system 2, and the airdrop hatch system 3.

[0038] Specifically, in this UAV air transportation and airdrop system, the airdrop container is loaded and unloaded on the UAV through the cargo transmission system 1, and the movement of the airdrop container in the cargo hold is realized. The airdrop of the airdrop container from the cabin through the airdrop channel during the flight of the cargo UAV is realized through the cargo hold airdrop system 2. The opening or closing of the airdrop channel at the bottom of the cargo hold is realized through the airdrop hatch system 3. The unmanned control of the above system is realized through the system controller.

[0039] Optionally, the airdrop container is loaded and unloaded on the UAV by the cargo transmission system 1. The cargo hold airdrop system 2 can release the airdrop container from the cabin and throw it out through the airdrop channel during the flight of the cargo UAV. The airdrop hatch system 3 is arranged at the bottom of the UAV cargo hold to provide an airdrop channel for the airdrop container. The system controller is used for controlling the unmanned control of the cargo transmission system 1, the cargo hold airdrop system 2, and the airdrop hatch system 3, so as to realize the unmanned loading, unloading, movement, and airdrop during the flight of multiple airdrop containers in the cargo hold.

[0040] In the UAV air transportation and airdrop system of the present invention, through the setting of the cargo transmission system 1, the airdrop container can be loaded into the cargo hold and driven to be transmitted in the cargo hold. At the same time, combined with the setting of the cargo hold airdrop system 2, the airdrop container transmitted to above the airdrop hatch 14 through the cargo transmission system 1 can be supported or unloaded. And combined with the setting of the airdrop hatch system 3, the opening and closing of the airdrop hatch 14 are realized, so as to realize the movement and airdrop requirements of multiple airdrop containers in the UAV cargo hold. Moreover, based on the setting of the system controller, the driving control of the cargo transmission system 1, the cargo hold airdrop system 2, and the airdrop hatch system 3 is realized, so as to realize the unmanned loading and airdrop of the UAV air transportation and airdrop system, greatly improving the efficiency of UAV air transportation and airdrop.

[0041] In this embodiment, the working principle of the system is described by taking the loading and airdrop of 3 airdrop containers as an example. When loading and airdropping more airdrop containers, the deduction can be carried out.

[0042] Among them, the three airdrop containers are numbered as Airdrop Container #1, Airdrop Container #2, and Airdrop Container #3 from front to back. Among them, the airdrop position is located below the position of Airdrop Container #3. The positions where the three airdrop containers are located are numbered as Loading Position #1, Loading Position #2, and Loading Position #3 in sequence. Among them, Loading Position #3 is the airdrop position.

[0043] In a possible implementation manner, refer to Figure 2 , the cargo transmission system 1 includes a roller track device 7 and a side guide rail device 5 arranged on the floor of the cargo hold, and a plurality of airdrop container driving devices 4 arranged on the top plate of the hold; and the roller track device 7 is located inside the side guide rail device 5; the side guide rail device 5 is used for guiding the airdrop container in the cargo hold and vertically limiting the airdrop container; a plurality of airdrop container driving devices 4 are all connected to the system controller, and the driving states of the respective airdrop container driving devices 4 are controlled through the system controller. The airdrop container driving device 4 is used for driving the airdrop container to be transmitted on the roller track device 7.

[0044] Optionally, a ball device 9 can also be arranged at the cargo hold door or inside the side guide rail device 5. One end of the ball device 9 is rotatably connected to the floor of the cargo hold, which is convenient for adapting to different application scenarios. Based on this, the airdrop container driving device 4 is used for driving the airdrop container to be transmitted on the roller track device 7 and the ball device 9.

[0045] Optionally, the cargo transmission system 1 further includes a front stop device 6 arranged on the floor of the cargo hold; the front stop device 6 is located on one side of the roller track device 7 and is used for stopping the contacted airdrop container.

[0046] Optionally, the cargo transmission system 1 further includes a plurality of lifting transverse guide rails 8 arranged on the floor of the cargo hold; the plurality of lifting transverse guide rails 8 are spaced inside the side guide rail device 5 and are used for limiting the airdrop container on the side guide rail device 5. The plurality of lifting transverse guide rails 8 are all connected to the system controller, and the lifting of each lifting transverse guide rail 8 is controlled through the system controller.

[0047] Specifically, the raceway device 7 is installed on the floor of the cargo hold through a bracket, arranged at the #1 loading position and the #2 loading position, and is used for the support and transmission of the #1 airdrop container and the #2 airdrop container, and reduces the transmission friction. The ball device 9 is installed on the floor of the cargo hold through a bracket, arranged at the cargo hold door of the unmanned aerial vehicle, and is used for loading the #1 airdrop container, the #2 airdrop container and the #3 airdrop container from the cargo hold door into the cargo hold, ensuring that the airdrop container can move along the X direction and the Y direction. The side guide device 5 is installed on the floor of the cargo hold through a bracket, arranged on both sides of the #1 airdrop container, the #2 airdrop container and the #3 airdrop container, and is used for guiding the airdrop container in the cargo hold and vertically limiting the pallet (+Z direction). The lifting and transverse guide rail 8 is installed on the floor of the cargo hold through a bracket, and is used for separating the #1 airdrop container, the #2 airdrop container and the #3 airdrop container and limiting them in the X direction, and ensuring that the three airdrop containers are independent motion units. The lifting and transverse guide rail 8 is an electric control component, which can be raised or lowered and is controlled by the system controller. The front stop device 6 is installed on the front end of the floor of the cargo hold through a bracket, and is used for forward limiting of the #1 airdrop container and preventing the airdrop container from hitting the structure of the unmanned aerial vehicle.

[0048] The airdrop container driving device 4 is installed above the cargo hold through a bracket, and is used for pushing the airdrop container to realize the loading, unloading and in-cabin movement of the airdrop container, and is controlled by the system controller. According to the center of gravity data of the unmanned aerial vehicle, the #1 airdrop container and the #2 airdrop container in the airdrop container driving device 4 should be designed as independent driving modules, that is, 2 sets of airdrop container devices are used for driving.

[0049] Optionally, the airdrop container driving device 4 is arranged above the cargo hold of the unmanned aerial vehicle, and uses a lower cantilever form to push the airdrop container to move, realizing the loading, unloading and in-air movement of the airdrop container.

[0050] In a possible implementation manner, refer to Figure 3 , the cargo hold airdrop system 2 includes two brackets 10 arranged on the floor of the cargo hold and above the airdrop hatch 14; the two brackets 10 are arranged opposite to each other and are used for supporting or unloading the airdrop container; a bracket movement mechanism and a bracket driving device are arranged on each bracket 10, the bracket driving device is connected to the bracket 10 through the bracket movement mechanism, and the bracket driving device is used for driving the bracket 10 to move through the bracket movement mechanism; each bracket driving device is connected to the system controller, and the driving state of each bracket driving device is controlled through the system controller.

[0051] Optionally, the cargo hold airdrop system 2 further includes two airdrop baffles 11 arranged on the floor of the cargo hold and above the airdrop hatch 14, and the two airdrop baffles 11 are arranged opposite to each other. Optionally, balls are arranged on the side of the bracket 10 in contact with the airdrop container.

[0052] Specifically, the cargo box airdrop system is installed at the 3# airdrop cargo box and is used for the loading and transmission of the #1 airdrop cargo box, the #2 airdrop cargo box, and the #3 airdrop cargo box, as well as the support of the #3 airdrop cargo box and the repeated airdrop operations of the #1 airdrop cargo box, the #2 airdrop cargo box, and the #3 airdrop cargo box, which is controlled by the system controller. The cargo box airdrop system consists of 2 brackets 10 for supporting the airdrop cargo box, 2 sets of bracket movement mechanisms for independently driving the brackets 10, and a bracket driving device. Ball bearings are provided on the brackets 10, and the airdrop cargo box can move along the X and Y directions with the brackets 10.

[0053] The state of the bracket 10 includes two states: cargo box support and cargo box release; when performing the airdrop cargo box loading task, it is located below the #3 airdrop cargo box and is in the support state; when performing the airdrop task, the bracket 10 can move to the outside of the airdrop cargo box on both sides (+Y, -Y directions) to reach the release state, releasing the support for the airdrop cargo box above it to achieve airdrop. The airdrop baffle 11 is arranged on both sides of the #3 loading position and, as an auxiliary function of the cargo hold airdrop system 2, prevents the airdrop cargo box from deflecting left and right during the airdrop instant, resulting in airdrop jamming.

[0054] In a possible implementation, refer to Figure 4 and 5 , the airdrop hatch system 3 includes an airdrop hatch guide rail 12 provided at the bottom of the cargo hold and a power transmission mechanism 13; the airdrop hatch guide rail 12 is used to accommodate the airdrop hatch 14, and the power transmission mechanism 13 is connected to the airdrop hatch 14 and is used to drive the airdrop hatch 14 to move within the airdrop hatch guide rail 12; the power transmission mechanism 13 is connected to the system controller, and the driving state of the power transmission mechanism 13 is controlled through the system controller.

[0055] Optionally, the power transmission mechanism 13 includes a motor, bevel gears, a torsion tube, a gear, and a rack; the output end of the motor is sequentially connected to the bevel gears, the torsion tube, and the gear, and the gear meshes with the rack, and the rack is provided on the airdrop hatch 14.

[0056] Specifically, the airdrop hatch system 3 is arranged at the bottom of the cargo hold, located directly below the #3 airdrop cargo box. It needs to be opened during the airdrop task to provide an airdrop channel for the airdrop cargo box. The airdrop hatch system 3 consists of a hatch structure, an airdrop hatch guide rail 12, a power transmission mechanism 13, etc.

[0057] Among them, the hatch structure adopts a profile frame and skin form, on which racks are integrated. The airdrop hatch guide rail 12 adopts a C-shaped guide rail, which is fixedly connected to the outside of the lower skin of the aircraft. The hatch structure is installed in the airdrop hatch guide rail 12 through rollers and can move back and forth in the airdrop hatch guide rail 12. The power transmission mechanism 13 adopts the form of a motor + bevel gear + torque tube + gear, and cooperates with the rack on the hatch structure to realize the electric sliding of the hatch structure in the airdrop hatch guide rail 12. Optionally, to ensure the opening and closing locking of the airdrop hatch 14, the power transmission mechanism 13 selects a motor with a brake.

[0058] In a possible implementation manner, the system controller is composed of a main controller, an airdrop hatch 14 controller, a bracket 10 controller, a floor controller, a lifting and lateral guide rail 8 controller, an airdrop cargo box driving device 4 controller, and a ground control panel, etc. Communication between the controllers is carried out through the CAN bus, and the controllers accept the instructions of the main controller and feedback the status of each controller to the main controller. The system controller controls the cargo hold airdrop system 2 and the airdrop hatch system 3 respectively. When performing the cargo hold airdrop task, the cargo hold airdrop system 2 and the airdrop hatch system 3 need to be cross-linked and controlled according to the specified control logic. Optionally, a cargo box sensing sensor is set for the position feedback of 3 airdrop cargo boxes. Optionally, a system status monitoring sensor is set for the working status feedback of the cargo hold airdrop system 2, the airdrop hatch system 3, and the external hanging release system.

[0059] See Figure 6 , which shows the working process of the unmanned aerial vehicle air transportation and airdrop system of the present invention, including the following steps:

[0060] a. The loading of 3 airdrop cargo boxes in the cargo hold is that the #1 airdrop cargo box, the #2 airdrop cargo box, and the #3 airdrop cargo box are loaded in sequence. See Figures 7 to 9 , and during the loading process, the operator places the airdrop cargo box in the cargo hold door area through the ground auxiliary system and operates the relevant components of the system to move, realizing the electric transmission of the airdrop cargo box in the cargo hold.

[0061] b. See Figure 10 , in the air transportation state, the #1 airdrop cargo box, the #2 airdrop cargo box, and the #3 airdrop cargo box are respectively limited to the #1 loading position, the #2 loading position, and the #3 loading position by the cargo hold airdrop system 2.

[0062] c. When performing the cargo hold cargo box airdrop task, the system controller controls the cargo hold airdrop system 2 and the airdrop hatch system 3 in sequence to realize the airdrop of 3 airdrop cargo boxes in the cargo hold.

[0063] See Figure 11 , which shows the specific airdrop process of 3 airdrop cargo boxes, including the following steps:

[0064] a. The airdrop hatch 14 is opened. Refer to Figure 12 , when reaching the airdrop area, the airdrop hatch 14 is opened under the instruction of the receiving system controller.

[0065] b. Refer to Figure 13 , the cargo hold airdrop system 2 moves to the dropping state under the instruction of the receiving system controller, releases the support for the #3 airdrop container, and the #3 airdrop container is dropped out of the cabin from the airdrop channel under the action of gravity. During the process of exiting the cabin, there are airdrop baffles 11 on both the left and right sides of the #3 airdrop container, and the #2 airdrop container and the #3 airdrop container driving device 4 on both the front and rear sides play an anti-tipping function to ensure that the #3 airdrop container smoothly exits the cabin from the airdrop hatch 14.

[0066] c. After the #3 airdrop container is dropped, the cargo hold airdrop system 2 returns to the air transportation state. The lifting and transverse guide rail 8 behind the #2 airdrop container descends under the instruction of the receiving system controller, and the #2 airdrop container driving device 4 pushes the #2 airdrop container to the airdrop position under the instruction of the receiving system controller. At this time, the lifting and transverse guide rail 8 behind the #2 airdrop container rises, and the #2 airdrop container reaches and is restricted at the airdrop position.

[0067] d. Repeat the operation in step b, and the #2 airdrop container is dropped out of the cabin.

[0068] e. After the #2 airdrop container is dropped, the cargo container airdrop system returns to the air transportation state. The lifting and transverse guide rails 8 behind the #1 airdrop container and the #2 airdrop container descend simultaneously under the instruction of the receiving system controller. The #1 airdrop container driving device 4 pushes the #1 airdrop container to the airdrop position under the instruction of the receiving system controller. At this time, the lifting and transverse guide rail 8 behind the #2 airdrop container rises, and the #1 airdrop container reaches and is restricted at the airdrop position.

[0069] f. Repeat the operation in step b, and the #1 airdrop container is dropped out of the cabin. Thus, the dropping of 3 airdrop containers is completed.

[0070] In summary, the UAV air transportation and airdrop system of the present invention can achieve unmanned loading, air transportation, and airdrop of multiple airdrop containers, greatly improving the work efficiency of UAV air transportation and airdrop and reducing costs. At the same time, the airdrop container driving device 4 in the cargo transmission system 1 is arranged at the upper part of the UAV cargo hold and uses a lower cantilever form to push the airdrop container to move, realizing the loading, unloading, and in-air movement of the airdrop container, with stable driving. The lifting and transverse guide rail 8 for isolating the airdrop container is provided in the cargo transmission system 1. It is lowered below the bottom plate of the container when the airdrop container moves and rises when the airdrop container moves to a fixed position to limit the airdrop container, effectively preventing the free movement of the airdrop container in the cargo hold. The cargo hold airdrop system 2 adopts a double bracket 10 form and driving form. It supports the airdrop container on both sides under the bottom plate of the container during air transportation and moves to both sides to release the support for the airdrop container during airdrop. The airdrop container is dropped out of the cabin under the action of gravity, with a stable structure. The system adopts the form of a lower airdrop hatch 14 for airdrop, relying on gravity for airdrop, reducing resource consumption.

[0071] The above content is only to illustrate the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. Any modification made on the basis of the technical solution according to the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.

Claims

1. An unmanned aerial vehicle air transportation and airdrop system, characterized in that, It includes a cargo transmission system (1), a cargo hold airdrop system (2), an airdrop hatch system (3), and a system controller; The cargo transmission system (1) is arranged in the cargo hold of the unmanned aerial vehicle, and is used for loading the airdrop container into the cargo hold and driving the transmission of the airdrop container in the cargo hold; The cargo hold airdrop system (2) is arranged above the airdrop hatch (14) of the cargo hold, and is used for supporting or unloading the airdrop container transmitted to above the airdrop hatch (14) through the cargo transmission system (1); The airdrop hatch system (3) is arranged at the bottom of the cargo hold and is connected to the airdrop hatch (14) of the cargo hold, and is used for driving the opening and closing of the airdrop hatch (14); The system controller is connected to the cargo transmission system (1), the cargo hold airdrop system (2), and the airdrop hatch system (3), and is used for driving and controlling the cargo transmission system (1), the cargo hold airdrop system (2), and the airdrop hatch system (3); The cargo transmission system (1) includes a track device (7) and a side guide rail device (5) arranged on the floor of the cargo hold, and a plurality of airdrop container driving devices (4) arranged on the top plate of the cabin; The track device (7) is located inside the side guide rail device (5); the side guide rail device (5) is used for guiding the airdrop container in the cargo hold and performing vertical limiting on the airdrop container; a plurality of airdrop container driving devices (4) are all connected to the system controller, and the driving state of each airdrop container driving device (4) is controlled through the system controller. The airdrop container driving device (4) is used for driving the transmission of the airdrop container on the track device (7); The airdrop container driving device (4) is arranged above the cargo hold of the unmanned aerial vehicle and pushes the airdrop container to move in a lower cantilever form; The cargo hold airdrop system (2) includes two brackets (10) arranged on the floor of the cargo hold and above the airdrop hatch (14); the two brackets (10) are arranged opposite to each other and are used for supporting or unloading the airdrop container; The cargo hold airdrop system (2) further includes two airdrop baffles (11) arranged on the floor of the cargo hold and above the airdrop hatch (14), and the two airdrop baffles (11) are arranged opposite to each other; The airdrop hatch system (3) includes an airdrop hatch guide rail (12) and a power transmission mechanism (13) arranged at the bottom of the cargo hold; The airdrop hatch guide rail (12) is used for accommodating the airdrop hatch (14), and the power transmission mechanism (13) is connected to the airdrop hatch (14) and is used for driving the movement of the airdrop hatch (14) in the airdrop hatch guide rail (12); The moving direction of the bracket (10) is perpendicular to the moving direction of the airdrop container.

2. The UAV air transportation and airdrop system according to claim 1, wherein, The cargo transmission system (1) further includes a front stop device (6) arranged on the floor of the cargo hold; the front stop device (6) is located on one side of the track device (7) and is used for stopping the contacted airdrop container.

3. The UAV air transportation and airdrop system according to claim 1 or 2, characterized in that, The cargo transmission system (1) further includes a plurality of lifting transverse guide rails (8) arranged on the floor of the cargo hold; The plurality of lifting transverse guide rails (8) are spaced inside the side guide rail device (5) and are used for limiting the airdrop container on the side guide rail device (5). The plurality of lifting transverse guide rails (8) are all connected to the system controller, and the lifting of each lifting transverse guide rail (8) is controlled through the system controller.

4. The UAV air transportation and airdrop system according to claim 1, characterized in that, Each of the brackets (10) is provided with a bracket movement mechanism and a bracket driving device. The bracket driving device is connected to the bracket (10) through the bracket movement mechanism, and the bracket driving device is used to drive the bracket (10) to move through the bracket movement mechanism; each bracket driving device is connected to the system controller, and the driving state of each bracket driving device is controlled through the system controller.

5. The UAV air transportation and airdrop system according to claim 4, characterized in that, Balls are arranged on one side of the bracket (10) in contact with the airdrop cargo box.

6. The drone air transportation and airdrop system according to claim 1, wherein, The power transmission mechanism (13) is connected to the system controller, and the driving state of the power transmission mechanism (13) is controlled through the system controller.

7. The UAV air transportation and airdrop system according to claim 6, wherein, The power transmission mechanism (13) includes a motor, bevel gears, a torque tube, a gear, and a rack; the output end of the motor is sequentially connected to the bevel gears, the torque tube, and the gear, the gear meshes with the rack, and the rack is arranged on the airdrop hatch (14).

8. The UAV air transportation and airdrop system according to claim 7, characterized in that, The motor is a motor with a brake.

Images