Freight transport system and loading method of unmanned aerial vehicle

Abstract

The invention discloses a freight transport system of an unmanned aerial vehicle and a loading method. The freight transport system comprises a loading mechanism, a side guide device, a mechanical two-way lock, a rolling rod conveying device and a forward limiting mechanism which are all mounted on a floor in a cabin of the unmanned aerial vehicle. The loading mechanism is located at the rear end in the unmanned aerial vehicle cabin. An angle adjusting mechanism is arranged at the rear end of the loading mechanism. The side guiding devices are located on the left side and the right side of a floor in an unmanned aerial vehicle cabin correspondingly and are parallel to the axis of the unmanned aerial vehicle cabin, and the distance between the two side guiding devices is the same as the width of a pallet. At least one mechanical two-way lock is arranged on each of the two sides of a floor in the unmanned aerial vehicle cabin, the mechanical two-way locks are located on the inner sides of the side guiding devices, and the rolling rod conveying devices are located between the two mechanical two-way locks in two rows; the forward limiting mechanism is located in the unmanned aerial vehicle cabin in the direction close to the head. The cargo loading and unloading efficiency is improved, and the limiting precision and reliability of cargoes on the unmanned aerial vehicle are greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of aviation logistics and relates to a cargo system and a loading method of an unmanned aerial vehicle. Background Art

[0002] As an emerging logistics method, drone cargo transportation has developed rapidly in recent years and has demonstrated its unique advantages in many fields. Drones can bypass ground traffic congestion and achieve fast delivery, which is particularly suitable for use in urban congested roads and remote areas.

[0003] Drone cargo transportation is becoming an increasingly competitive freight solution due to its advantages such as high efficiency, low operating costs and the ability to alleviate traffic congestion. However, existing drone cargo transportation systems generally use manual methods to transport cargo and use tethering chains and quick-release hooks to limit heading movement, resulting in low loading and unloading efficiency, low limiting accuracy and reliability, which greatly restricts the development of the drone cargo transportation industry. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a cargo system and loading method for an unmanned aerial vehicle, which improves the efficiency of cargo loading and unloading, and greatly improves the positioning accuracy and reliability of cargo on the unmanned aerial vehicle.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A cargo system for an unmanned aerial vehicle, comprising a loading mechanism, a side guide device, a mechanical two-way lock, a roller transmission device and a forward limit mechanism, all of which are installed on the floor of the unmanned aerial vehicle cabin; The loading mechanism is located at the rear end of the unmanned cabin, and an angle adjustment mechanism is provided at the rear end of the loading mechanism; there are at least two side guide devices, which are respectively located on the left and right sides of the floor of the unmanned cabin, parallel to the axis of the unmanned cabin body, and the distance between the two side guide devices is the same as the width of the pallet; at least one mechanical two-way lock is provided on each side of the floor of the unmanned cabin, and the mechanical two-way lock is located on the inner side of the side guide device, and the roller transmission device is divided into two rows and located between the two mechanical two-way locks; the forward limiting mechanism is located in the unmanned cabin close to the nose direction.

[0006] Preferably, the loading mechanism includes a loading mechanism mounting plate; the loading mechanism mounting plate is installed on the floor inside the unmanned aircraft cabin, and an angle adjustment mechanism and a loading device transmission plane are provided on the loading mechanism mounting plate. The front side of the loading device transmission plane is hinged to the loading mechanism mounting plate, and the rear side is connected to the angle adjustment mechanism, and a plurality of ball transmission units are evenly distributed on the loading device transmission plane.

[0007] Furthermore, the angle adjustment mechanism includes an adjustment handle, a support and a cam mechanism; the support is arranged on the loading mechanism mounting plate, and two transverse waist-circular holes are arranged on the rear side of the loading device transmission plane. The cam mechanism includes a cam and a connecting rod. One end of the two connecting rods is slidably connected to the waist-circular hole, and the other end of the connecting rod is rotatably connected to the cam. The cam is connected to the adjustment handle through the support via a connecting shaft.

[0008] Furthermore, loading mechanism side guide devices are arranged on both sides of the loading device transmission plane.

[0009] Preferably, the side guide device includes a side guide limit device mounting frame; the side guide limit device mounting frame is a long strip structure with a C-shaped cross-section and an opening facing the axis of the drone cabin body. The side guide limit device mounting frame is fixed to the floor inside the drone cabin by a plurality of first locking bolts, and a roller is installed in the opening of the side guide limit device mounting frame, with both ends of the roller rotatably connected to the upper and lower sides of the side guide limit device mounting frame, and the peripheral surface of the roller extends out from the opening.

[0010] Furthermore, a vertical limit head is provided on the upper side of the side guide limit device mounting frame, and the vertical limit head extends toward the opening direction.

[0011] Preferably, the mechanical two-way lock includes a two-way lock base, on which a two-way lock head is arranged, and the two-way lock head includes two cross-arranged lock heads, and the two lock heads are rotatably connected to the two-way lock base via a rotating shaft respectively, and a torsion spring is sleeved on the two rotating shafts, one end of the torsion spring is connected to the two-way lock base, and the other end is connected to the lock head, so that the lock heads are always rotated in a direction away from each other.

[0012] Furthermore, a groove is provided in the middle of the two-way lock base, and the two lock heads are rotatably connected to the groove of the two-way lock base.

[0013] Furthermore, a transmission stick is installed in a sunken manner at both the front and rear ends of the two-way lock base.

[0014] A loading method for a cargo system of an unmanned aerial vehicle, wherein a cargo auxiliary device on the ground moves an aerial container loaded with cargo to a loading mechanism at a cabin door, and an angle adjustment mechanism is used to adjust the height of the rear end of the loading mechanism so that the posture of the aerial container matches the loading mechanism. The aerial container passes through the loading mechanism and enters a cargo position in the cabin of the unmanned aerial vehicle where it needs to be placed. Side guide devices are located on both sides of the aerial container to guide and limit the span and vertical position of the unmanned aerial vehicle. When the aerial container arrives at the designated cargo position, a mechanical two-way lock is opened and pulled up to complete the heading limit of the aerial container.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention is responsible for stably and quickly loading, unloading and transferring goods in the unmanned aerial vehicle cabin through a loading mechanism, limits the left and right directions of the cargo pallet through a side guide device, and guides the heading and counter-heading movement of the cargo pallet, limits the cargo pallet in the heading and counter-heading directions through a mechanical two-way lock, and limits the movement of the cargo pallet in the heading direction through a forward limiting mechanism to prevent the cargo pallet from moving forward and leaving the freight system. The entire system has a compact structure and a reasonable layout, and improves the operability, reliability and economy of the freight system without increasing the weight of the unmanned aerial vehicle freight system as much as possible.

[0016] Furthermore, the cargo uses a ball transfer unit to adjust the angle of the container, which improves loading efficiency, loading accuracy and saves manpower.

[0017] Furthermore, the staff can adjust the posture of the loading device to be consistent with the ground auxiliary loading device in advance by adjusting the handle, so as to facilitate loading.

[0018] Furthermore, the loading mechanism side guides are used to prevent the cargo from shifting during transportation and hitting the drone cabin wall.

[0019] Furthermore, the rollers of the side guide device play a role of guiding and side limiting, which not only prevents the cargo pallet from moving in the left and right directions, but also reduces the contact friction when the cargo pallet moves in the heading direction and the reverse heading direction.

[0020] Furthermore, the vertical limit head is used to limit the cargo pallet in the vertical direction to prevent the cargo pallet from bouncing up and disengaging from the side guide device during flight turbulence.

[0021] Furthermore, the torsion spring always rotates the lock heads in a direction away from each other, so that the two crossed lock heads are self-locking and cannot be separated and move away from each other.

[0022] Furthermore, the mechanical two-way lock adopts a sunken design to reduce the working height of the transmission device and increase the height limit of the cargo loaded in the container. The sunken transmission sticks on both sides can make the mechanical two-way lock integrate the transmission and limit functions, improve the integration of freight system components, and make installation and commissioning more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the cargo system of the UAV of the present invention; Figure 2 It is a schematic diagram of the structure of the loading device of the cargo system of the UAV of the present invention; Figure 3 It is a structural schematic diagram of the guide device of the cargo system of the UAV of the present invention; Figure 4 It is a schematic diagram of the bidirectional lock structure of the cargo system of the UAV of the present invention; Figure 5The figure is a schematic diagram of the forward limiting structure of the cargo system of the UAV of the present invention.

[0024] Among them: 1-unmanned cabin door, 2-loading mechanism, 3-side guide device, 4-mechanical two-way lock, 5-stick transmission mechanism, 6-forward limit mechanism, 7-unmanned cabin floor, 21-loading mechanism bottom plate, 22-adjusting handle, 23-mounting seat, 24-U cam mechanism, 25-loading mechanism platform, 26 ball transmission unit, 27-loading mechanism side guide device, 31-side guide limit device mounting frame, 32-first locking bolt, 33-roller mechanism, 34-vertical limit head, 41-transmission stick, 42-sunken two-way lock base, 43-second locking bolt, 44-two-way lock head, 61-forward limit head, 62-third locking bolt. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. The term "and / or" used in this article includes any and all combinations of one or more related listed items. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0029] like Figure 1 As shown, the drone-based cargo system of the present invention includes a loading mechanism 2, a side guide device 3, a mechanical two-way lock 4, a roller transmission device 5 and a forward limiting mechanism 6.

[0030] A drone cabin door 1 is arranged at the rear end of the drone, the drone cabin door 1 is connected to the drone cabin, a drone cabin floor 7 is arranged on the drone cabin surface, and the cargo system is arranged on the drone cabin floor 7.

[0031] The loading mechanism 2 is fixedly mounted on the floor 7 inside the unmanned aircraft cabin, the side guide device 3 is fixedly mounted on the floor 7 inside the unmanned aircraft cabin by bolts, the mechanical two-way lock 4 is distributedly fixedly mounted on the floor 7 inside the unmanned aircraft cabin according to the storage position of the unmanned aircraft container, the roller transmission device 5 is evenly fixedly mounted on the floor 7 inside the unmanned aircraft cabin in two rows, and the forward limiting mechanism 6 is fixedly mounted on the floor 7 inside the unmanned aircraft cabin by bolts.

[0032] The loading mechanism 2 is located at the rear end of the unmanned aerial vehicle cabin, that is, close to one end of the unmanned aerial vehicle cabin door 1. In the present invention, the loading mechanism 2 is shown in the structural diagram as follows: Figure 2As shown, it includes a loading mechanism mounting plate 21, an adjustment handle 22, a support 23, a cam mechanism 24, a loading mechanism transmission plane 25 and a loading mechanism side guide device 27.

[0033] The loading mechanism mounting plate 21 is mounted on the floor 7 in the unmanned aerial vehicle cabin, and the rear side is arranged in close contact with the unmanned aerial vehicle cabin door 1. Two supports 23 and a loading device transmission plane 25 are arranged on the loading mechanism mounting plate 21. The front side of the loading device transmission plane 25 is hinged to the loading mechanism mounting plate 21, so that the rear side of the loading device transmission plane 25 can be rotated up and down. The adjustment handle 22, the support 23 and the cam mechanism 24 form an angle adjustment mechanism. Two transverse waist holes are arranged on the rear side of the loading device transmission plane 25. The cam mechanism 24 is fixedly mounted on the loading mechanism mounting plate 21 through the support 23. There are two cam mechanisms 24. The cam mechanism 24 includes a cam and a connecting rod. One end of the two connecting rods is slidably connected. In the oval hole, it can move horizontally along the axis of the oval hole, and the other end of the connecting rod is rotatably connected to the cam. The cam is connected to the adjusting handle 22 through the support 23 through the connecting shaft. The adjusting handle 22 is used to manually adjust the posture of the loading mechanism. By rotating the adjusting handle 22, the cam is driven to rotate, and the cam drives the connecting rod to move up and down, thereby driving the rear side of the loading device transmission plane 25 to rotate up and down, adjusting its own angle to meet different cargo transportation needs. In addition, the oval hole on the rear side of the loading device transmission plane 25 can satisfy the connection rod to follow the circular motion of the cam, and decompose the circular motion into horizontal movement and up and down movement. The horizontal movement is realized through the oval hole, so that the loading device transmission plane 25 can only move up and down.

[0034] The ball transmission unit 26 plays a transmission role, and there are multiple ball transmission units 26, which are evenly distributed and fixedly installed on the loading device transmission plane 25. The ball transmission unit 26 is a mechanical structure with a ball bearing as the core. The rolling of the ball reduces the friction in the power transmission process, realizes efficient rotation and transmission movement, and is responsible for the stable and rapid loading, unloading and transportation of goods in the unmanned cabin. The loading mechanism side guide device 27 with side limit and guide functions is fixedly installed on the loading device transmission plane 25. There are two loading mechanism side guide devices 27, which are located on both sides of the loading device transmission plane 25 to prevent the goods from shifting during transportation and hitting the wall of the unmanned cabin.

[0035] There are at least two side guide devices 3, which are located on the left and right sides of the floor 7 in the unmanned cabin, parallel to the axis of the unmanned cabin, and the distance between the two side guide devices 3 is the same as the width of the pallet. The side guide devices 3 are used to limit the left and right directions of the pallet and guide the heading and reverse heading movement of the pallet. In the present invention, the schematic diagram of the structure of the side guide device 3 is as follows: Figure 3 As shown, the side guide device 3 includes a side guide limit device mounting frame 31 , a first locking bolt 32 , an adjusting roller 33 and a vertical limit head 34 .

[0036] The side guide limit device mounting frame 31 is a long strip structure with a C-shaped cross-section and an opening facing the axis of the drone cabin. The side guide limit device mounting frame 31 and the vertical limit head 34 are fixed to the floor 7 in the drone cabin through multiple first locking bolts 32. The vertical limit head 34 is located above the side guide limit device mounting frame 31 and extends toward the opening direction, which is used to limit the cargo pallet in the vertical direction to prevent the cargo pallet from bouncing up and detaching from the side guide device 3 during flight turbulence. The roller 33 is fixedly mounted at the opening of the side guide limit device mounting frame 31, and both ends of the roller 33 are rotatably connected to the upper and lower sides of the side guide limit device mounting frame 31. The peripheral surface of the roller 33 extends out of the opening. The roller 33 plays a guiding and side limiting role, which not only blocks the left and right movement of the cargo pallet, but also reduces the contact friction when the cargo pallet moves in the heading and reverse heading. The side guide device 3 has a simple structure and is easy to disassemble. For different types of cargo drones, the design can be re-matched by adjusting the number of positions of the rollers 33 and the vertical limit heads 34, which has strong plasticity.

[0037] In the present invention, the mechanical two-way lock 4 is schematically shown as follows: Figure 4 As shown, it includes a transmission stick 41, a sunken two-way lock base 42, a second locking bolt 43 and a two-way lock head 44.

[0038] The front and rear ends of the two-way lock base 42 are the heading of the drone. A transmission stick 41 is installed at both ends of the two-way lock base 42. The transmission stick 41 is rotatably connected to the two-way lock base 42, and the connecting shaft is located inside the two-way lock base 42. The direction of the connecting shaft is left and right. A groove is set in the middle of the two-way lock base 42. The two-way lock head 44 is rotatably connected in the groove, and the rotating shaft is located inside the groove of the two-way lock base 42. The direction of the rotating shaft is left and right.

[0039] The transmission rod 41 is fixedly sunken and installed in front and behind the two-way lock base 42, and the two-way lock head 44 is sunken and installed in the groove in the middle of the two-way lock base 42 through a rotating shaft. Its structure is simple and easy to disassemble. The mechanical two-way lock 4 adopts a sunken design to reduce the working height of the transmission device and increase the height limit of the container loading cargo. The sunken installation of the transmission rod 41 on both sides can make the mechanical two-way lock 4 integrate the transmission and limit functions, improve the integration of the freight system components, and make installation and debugging more convenient.

[0040] The two-way lock head 44 includes two cross-arranged lock heads, and the two lock heads are rotatably connected to the grooves of the two-way lock base 42 through a rotating shaft. A torsion spring is sleeved on the two rotating shafts, one end of the torsion spring is connected to the two-way lock base 42, and the other end is connected to the lock head, so that the lock heads are always rotated in the direction away from each other, so that the two crossed lock heads form a self-locking state, cannot be separated and are away from each other.

[0041] At least one two-way lock base 42 is arranged on each side of the floor 7 in the drone cabin. The front and rear ends of the two-way lock base 42 are arranged along the heading of the drone. The two-way lock base 42 is located on the inner side of the side guide device 3, and is used to limit the cargo pallet in the heading and counter-heading direction. During loading and unloading, the transmission stick 41 can play a sliding role to save physical effort.

[0042] In the present invention, the schematic diagram of the structure of the forward limiting mechanism 6 is shown in Figure 5, which includes a forward limiting head 61 and a third locking bolt 62. The forward limiting head 61 is fixedly installed on the floor 7 in the unmanned cabin through the third locking bolt 62. A horizontal through groove is provided at the rear side of the forward limiting head 61 for clamping the cargo pallet. An open groove is provided at the top of the rear side of the forward limiting head 61 for facilitating the installation or removal of the third locking bolt 62. A mounting groove is provided at the bottom of the rear side of the forward limiting head 61 for placing the third locking bolt 62. A mounting hole is provided on the mounting groove for the third locking bolt 62 to pass through and connect the forward limiting head 61 to the floor 7 in the unmanned cabin. The forward limiting mechanism 6 is located in the unmanned cabin near the nose direction and at the front end of the entire cargo system. It is used to limit the movement of the cargo pallet in the heading direction to prevent the cargo pallet from moving forward and leaving the cargo system. It has a compact structure and is easy to install.

[0043] During operation, the cargo auxiliary device on the ground moves the air container loaded with cargo to the loading mechanism 2 at the cabin door, and matches the posture of the air container with the loading mechanism 2 of the drone cargo system by manually adjusting the adjustment handle 22 on the loading mechanism 2 and with the assistance of personnel. The ball transmission unit 26 on the loading device 2 plays the role of transmission and posture adjustment, and the side guide device 27 of the loading mechanism plays the role of side guidance and vertical limit. The loading device 2 can quickly match the posture of the air container with the posture of the cargo system, and the positioning accuracy is high and the adjustment is convenient. The personnel push the container located on the loading mechanism 2 to the cargo position where it needs to be placed through the roller mechanism 5, and the side guide devices 3 installed on both sides of the floor 7 in the drone cabin play the role of guidance and the span and vertical limit of the drone. When the air container arrives at the designated cargo position, the two-way lock lock head 44 on the mechanical two-way lock 4 is pulled up to complete the heading limit of the air container, and then the loading of the container in the next cargo position is completed again.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this patent should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a waiver of such subject matter, nor should it be considered that the applicant has not considered such subject matter to be part of the disclosed inventive subject matter.

Claims

1. A drone cargo system, characterized in that: It comprises a loading mechanism (2), a side guide device (3), a mechanical two-way lock (4), a roller transmission device (5) and a forward limit mechanism (6), all of which are installed on the floor (7) in the unmanned aircraft cabin; The loading mechanism (2) is located at the rear end of the unmanned cabin, and an angle adjustment mechanism is arranged at the rear end of the loading mechanism (2); there are at least two side guide devices (3), which are respectively located on the left and right sides of the floor (7) in the unmanned cabin and are parallel to the axis of the unmanned cabin body, and the spacing between the two side guide devices (3) is the same as the width of the cargo pallet; at least one mechanical two-way lock (4) is arranged on each side of the floor (7) in the unmanned cabin, and the mechanical two-way lock (4) is located on the inner side of the side guide device (3); and the roller transmission device (5) is divided into two rows and is located between the two mechanical two-way locks (4); and the forward limit mechanism (6) is located in the unmanned cabin near the nose direction.

2. The drone cargo system according to claim 1, characterized in that: The loading mechanism (2) comprises a loading mechanism mounting plate (21); the loading mechanism mounting plate (21) is mounted on the floor (7) in the unmanned aircraft cabin, an angle adjustment mechanism and a loading device transmission plane (25) are arranged on the loading mechanism mounting plate (21), the front side of the loading device transmission plane (25) is hinged to the loading mechanism mounting plate (21), and the rear side is connected to the angle adjustment mechanism, and a plurality of ball transmission units (26) are evenly distributed on the loading device transmission plane (25).

3. The drone cargo system according to claim 2, characterized in that: The angle adjustment mechanism comprises an adjustment handle (22), a support (23) and a cam mechanism (24); the support (23) is arranged on a loading mechanism mounting plate (21); two transverse oval holes are arranged on the rear side of a loading device transmission plane (25); the cam mechanism (24) comprises a cam and a connecting rod; one end of the two connecting rods is slidably connected to the oval holes; the other end of the connecting rod is rotatably connected to the cam; the cam is connected to the adjustment handle (22) through the support (23) via a connecting shaft.

4. The drone cargo system according to claim 2, characterized in that: Loading mechanism side guide devices (27) are arranged on both sides of the loading device transmission plane (25).

5. The drone cargo system according to claim 1, characterized in that: The side guide device (3) comprises a side guide limit device mounting frame (31); the side guide limit device mounting frame (31) is a long strip structure with a C-shaped cross section and an opening facing the axis of the unmanned aerial vehicle cabin body; the side guide limit device mounting frame (31) is fixed to the floor (7) in the unmanned aerial vehicle cabin by a plurality of first locking bolts (32); a roller (33) is mounted in the opening of the side guide limit device mounting frame (31); two ends of the roller (33) are rotatably connected to the upper and lower sides of the side guide limit device mounting frame (31); and a peripheral surface portion of the roller (33) extends out of the opening.

6. The drone cargo system according to claim 5, characterized in that: A vertical limit head (34) is arranged on the upper side of the side guide limit device mounting frame (31), and the vertical limit head (34) extends toward the opening direction.

7. The drone cargo system according to claim 1, characterized in that: The mechanical two-way lock (4) comprises a two-way lock base (42), a two-way lock head (44) being arranged on the two-way lock base (42), the two-way lock head (44) comprising two cross-arranged lock heads, the two lock heads being rotatably connected to the two-way lock base (42) via a rotating shaft respectively, a torsion spring being sleeved on the two rotating shafts, one end of the torsion spring being connected to the two-way lock base (42), and the other end being connected to the lock head, so that the lock heads are always rotated in a direction away from each other.

8. The drone cargo system according to claim 7, characterized in that: A groove is provided in the middle of the two-way lock base (42), and the two lock heads are rotatably connected to the groove of the two-way lock base (42).

9. The drone cargo system according to claim 7, characterized in that: A transmission stick (41) is installed in a sunken manner at both the front and rear ends of the two-way lock base (42).

10. A method for loading a cargo system of a drone according to any one of claims 1 to 9, characterized in that: The cargo auxiliary device on the ground moves the air container loaded with cargo to the loading mechanism (2) at the cabin door, and adjusts the height of the rear end of the loading mechanism (2) through the angle adjustment mechanism so that the posture of the air container matches the loading mechanism (2). The air container passes through the loading mechanism (2) and enters the cargo position in the unmanned aircraft cabin where it needs to be placed. The side guide devices (3) are located on both sides of the air container and play a guiding role and a span-wise and vertical limit role for the unmanned aircraft. When the air container arrives at the designated cargo position, the mechanical two-way lock is opened and pulled up to complete the heading limit of the air container.

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