Freight transport system of unmanned aerial vehicle

Abstract

The utility model discloses a freight transport system of an unmanned aerial vehicle. The freight transport system comprises a loading mechanism, a side guiding device, a mechanical two-way lock, a rolling rod conveying device and a forward limiting mechanism which are all installed 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 utility model belongs to the field of aviation logistics and relates to a freight system of an unmanned aerial vehicle. Background Art

[0002] As an emerging logistics method, drone freight has experienced rapid development in recent years, demonstrating its unique advantages in various fields. Drones can bypass ground traffic congestion and enable rapid delivery, making them particularly suitable for use in congested urban areas and remote areas.

[0003] Drone freight is becoming an increasingly competitive freight solution due to its advantages, including efficient delivery timeliness, low operating costs, and ability to alleviate traffic congestion. However, existing drone freight systems generally rely on manual handling and utilize tethering chains and quick-release hooks to restrict directional movement. This results in low loading and unloading efficiency, limited motion control accuracy, and low reliability, significantly hindering the development of the drone freight industry. Utility Model Content

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

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A cargo system for an unmanned aerial vehicle (UAV), 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 mounted on the floor of the UAV cabin;

[0007] 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 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 cargo 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 limit mechanism is located in the unmanned cabin close to the nose direction.

[0008] Preferably, the loading mechanism includes a loading mechanism mounting plate; the loading mechanism mounting plate is installed on the floor inside the unmanned aerial vehicle 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.

[0009] 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 provided 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 slidingly 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.

[0010] Furthermore, loading mechanism side guide devices are provided on both sides of the loading device transmission plane.

[0011] 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 unmanned aircraft cabin body. The side guide limit device mounting frame is fixed to the floor inside the unmanned aircraft cabin by a plurality of first locking bolts. A roller is installed in the opening of the side guide limit device mounting frame, and both ends of the roller are 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.

[0012] Furthermore, a vertical limiting head is provided on the upper side of the side guide limiting device mounting frame, and the vertical limiting head extends toward the opening direction.

[0013] Preferably, the mechanical two-way lock includes a two-way lock base, a two-way lock head is provided on the two-way lock base, 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 through a rotating shaft respectively. 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 the direction away from each other.

[0014] 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.

[0015] Furthermore, a transmission stick is installed in a sunken manner at both the front and rear ends of the two-way lock base.

[0016] Preferably, the forward limiting mechanism includes a forward limiting head, which is fixedly mounted on the floor of the unmanned aerial vehicle cabin by a third locking bolt, and a horizontal through groove is provided on the rear side of the forward limiting head.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The utility model is responsible for stably and quickly loading, unloading and transferring goods in the unmanned aerial vehicle cabin through the loading mechanism, limits the left and right directions of the cargo pallet through the 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 the mechanical two-way lock, and limits the movement of the cargo pallet in the heading direction through the forward limiting mechanism, preventing 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.

[0019] Furthermore, the cargo uses a ball transfer unit to adjust the angle of the container, improving loading efficiency, loading accuracy and saving manpower.

[0020] 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.

[0021] Furthermore, the side guides of the loading mechanism are used to prevent the cargo from shifting during transportation and hitting the walls of the UAV cabin.

[0022] Furthermore, the rollers of the side guide device play the role of guidance and side limit, which not only prevents the cargo pallet from moving in the left and right directions, but also reduces contact friction when the cargo pallet moves in the heading and counter-heading directions.

[0023] 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.

[0024] Furthermore, the torsion spring rotates the lock heads in a direction away from each other all the time, so that the two crossed lock heads are self-locking and cannot be separated and move away from each other.

[0025] Furthermore, the mechanical two-way lock's sunken design reduces the operating height of the conveyor system, increasing the height limit for loading cargo onto the container. The sunken conveyor bars on both sides combine the conveyor and restraint functions, improving the integration of freight system components and making installation and commissioning more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the cargo system structure of the UAV of the present invention;

[0027] Figure 2 This is a schematic diagram of the loading device structure of the UAV cargo system of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the guide device of the cargo system of the UAV of the present invention;

[0029] Figure 4This is a schematic diagram of the bidirectional lock structure of the UAV cargo system of the present invention;

[0030] Figure 5 This is a schematic diagram of the forward motion limiting structure of the UAV cargo system of the present invention.

[0031] Among them: 1-unmanned aerial vehicle cabin door, 2-loading mechanism, 3-side guide device, 4-mechanical two-way lock, 5-stick transmission mechanism, 6-forward limit mechanism, 7-unmanned aerial vehicle cabin floor, 21-loading mechanism bottom plate, 22-adjustment 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

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments 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 should not be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms "installed", "connected", and "connected" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrally connected; they can be mechanically connected, electrically connected, or able to communicate with each other; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internally connected between two elements or an interactive relationship between two elements. The term "and / or" used herein includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. The terms used herein in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model.

[0035] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0036] like Figure 1 As shown, the UAV-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.

[0037] A drone cabin door 1 is provided at the rear end of the drone, the drone cabin door 1 is connected to the drone cabin, a drone cabin floor 7 is provided on the drone cabin floor, and the freight system is provided on the drone cabin floor 7.

[0038] The loading mechanism 2 is fixedly mounted on the floor 7 inside the unmanned aerial vehicle cabin, the side guide device 3 is fixedly mounted on the floor 7 inside the unmanned aerial vehicle cabin by bolts, the mechanical two-way lock 4 is distributed and fixedly mounted on the floor 7 inside the unmanned aerial vehicle cabin according to the storage position of the unmanned aerial vehicle container, the roller transmission device 5 is evenly distributed and fixedly mounted on the floor 7 inside the unmanned aerial vehicle cabin in two rows, and the forward limiting mechanism 6 is fixedly mounted on the floor 7 inside the unmanned aerial vehicle cabin by bolts.

[0039] 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.

[0040] The loading mechanism mounting plate 21 is installed on the floor 7 in the unmanned aerial vehicle cabin, and the rear side is arranged in contact with the unmanned aerial vehicle cabin door 1. Two supports 23 and a loading device transmission plane 25 are provided 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 horizontal waist holes are provided 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 waist-circular hole, it can move horizontally along the axis of the waist-circular hole. 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 the connecting shaft. The adjustment handle 22 is used to manually adjust the posture of the loading mechanism. By rotating the adjustment 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 waist-circular hole on the rear side of the loading device transmission plane 25 can satisfy the connection rod to follow the cam's circular motion, decomposing the circular motion into horizontal movement and up and down movement. The horizontal movement is realized through the waist-circular hole, so that the loading device transmission plane 25 can only move up and down.

[0041] Ball transfer units 26, which function as transmission mechanisms, are distributed and fixedly mounted on the loading mechanism transmission plane 25. Ball transfer units 26 are mechanical structures centered around ball bearings. The rolling motion of the balls reduces friction during power transmission, enabling efficient rotation and transmission motion, ensuring stable and rapid loading, unloading, and transfer of cargo within the unmanned vehicle cabin. Loading mechanism side guides 27, which serve as side limiters and guides, are fixedly mounted on the loading mechanism transmission plane 25. Two loading mechanism side guides 27 are located on either side of the loading mechanism transmission plane 25 to prevent cargo from shifting during transport and striking the walls of the unmanned vehicle cabin.

[0042] 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 body. The distance between the two side guide devices 3 is the same as the width of the cargo pallet. The side guide devices 3 are used to limit the left and right directions of the cargo pallet and guide the cargo pallet's heading and counter-heading movement. In the present utility model, the structural diagram 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 .

[0043] 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 cabin body. The side guide limit device mounting frame 31 and the vertical limit head 34 are fixed to the floor 7 in the unmanned cabin by 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. It 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 3 during flight turbulence. The roller 33 is fixedly mounted at the opening of the side guide limit device mounting frame 31. The two 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 from the opening. The roller 33 plays the role of guiding and side limiting, 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 counter-heading direction. 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.

[0044] In the present invention, the mechanical two-way lock 4 is shown in the structural diagram. Figure 4 As shown, it includes a transmission rod 41, a sunken two-way lock base 42, a second locking bolt 43 and a two-way lock head 44.

[0045] 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 provided 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.

[0046] The transmission rods 41 are fixedly mounted on the front and rear sides of the two-way lock base 42. The two-way lock head 44 is mounted via a pivoted shaft in a recessed groove in the center of the two-way lock base 42. The mechanism is simple and easy to disassemble. The mechanical two-way lock 4's sunken design reduces the operating height of the transmission mechanism and increases the height limit for loading cargo in the container. The sunken mounting of the transmission rods 41 on both sides allows the mechanical two-way lock 4 to integrate both transmission and restraint functions, improving the integration of freight system components and facilitating installation and commissioning.

[0047] 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 each of the two rotating shafts, and 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 cross lock heads form a self-locking form, cannot be separated and move away from each other.

[0048] At least one two-way lock base 42 is set on each side of the floor 7 in the drone cabin. The front and rear ends of the two-way lock base 42 are set 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 directions. During loading and unloading, the transmission stick 41 can play a sliding role to save physical effort.

[0049] In the present invention, the forward limiting mechanism 6 is shown in FIG5 , which includes a forward limiting head 61 and a third locking bolt 62. The forward limiting head 61 is fixedly mounted on the unmanned cabin floor 7 via the third locking bolt 62. A horizontal through slot is provided on the rear side of the forward limiting head 61 for clamping the cargo pallet. An open slot is provided on the top rear side of the forward limiting head 61 for facilitating installation or removal of the third locking bolt 62. A mounting slot is provided on the bottom rear side of the forward limiting head 61 for receiving the third locking bolt 62. The mounting slot is provided with a mounting hole for the third locking bolt 62 to pass through and connect the forward limiting head 61 to the unmanned cabin floor 7. The forward limiting mechanism 6 is located in the unmanned cabin near the nose of the aircraft, at the very front of the entire cargo system, and is used to limit the movement of the cargo pallet in the heading direction, preventing the cargo pallet from moving forward and escaping from the cargo system. It has a compact structure and is easy to install.

[0050] During operation, the ground-based cargo assistance system transfers the loaded air container to the loading mechanism 2 at the hatch. Manual adjustment of the adjustment handle 22 on the loading mechanism 2 and assistance from personnel align the air container's position with the loading mechanism 2 of the drone cargo system. The ball transmission unit 26 on the loading mechanism 2 performs transmission and position adjustment functions, while the loading mechanism's side guides 27 provide lateral guidance and vertical limiting. The loading mechanism 2 allows for rapid alignment of the air container's position with the cargo system's position, with high positioning accuracy and convenient adjustment. Personnel push the air container from the loading mechanism 2 to the desired storage location using the roller mechanism 5. Side guides 3 mounted on either side of the drone cabin floor 7 provide guidance and span and vertical limiting functions. Once the air container reaches the designated storage location, the mechanical two-way lock 4 is pulled up, securing the air container's course, and then loading the next container into the next storage location is completed.

[0051] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0052] 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 from the preceding claims is not a disclaimer of such subject matter, nor should it be considered that the applicant did not consider such subject matter to be part of the disclosed utility model subject matter.

Claims

1. A drone cargo system, characterized in that: It includes 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 the rear end of the loading mechanism (2) is provided with an angle adjustment mechanism; the number of the side guide devices (3) is at least two, and they are respectively located on the left and right sides of the floor (7) in the unmanned cabin, parallel to the axis of the unmanned cabin body, and the distance 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 provided on each side of the floor (7) in the unmanned cabin, and the mechanical two-way lock (4) is located inside the side guide device (3); the roller transmission device (5) is divided into two rows and is located between the two mechanical two-way locks (4); the forward limit mechanism (6) is located in the unmanned cabin near the nose direction.

2. The UAV cargo system according to claim 1, characterized in that: The loading mechanism (2) includes a loading mechanism mounting plate (21); the loading mechanism mounting plate (21) is mounted on the floor (7) in the unmanned aerial vehicle cabin, and an angle adjustment mechanism and a loading device transmission plane (25) are provided 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. A plurality of ball transmission units (26) are evenly distributed on the loading device transmission plane (25).

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

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

5. The UAV cargo system according to claim 1, characterized in that: The side guide device (3) includes 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. The side guide limit device mounting frame (31) is fixed to the floor (7) in the unmanned aerial vehicle cabin through a plurality of first locking bolts (32). A roller (33) is installed in the opening of the side guide limit device mounting frame (31). Both ends of the roller (33) are rotatably connected to the upper and lower sides of the side guide limit device mounting frame (31), and the peripheral surface of the roller (33) extends out from the opening.

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

7. The UAV cargo system according to claim 1, characterized in that: The mechanical two-way lock (4) includes a two-way lock base (42), a two-way lock head (44) is provided on the two-way lock base (42), and the two-way lock head (44) includes two cross-arranged lock heads, and the two lock heads are respectively connected to the two-way lock base (42) through a rotating shaft, and a torsion spring is sleeved on each of 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 a direction away from each other.

8. The UAV 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 UAV 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. The drone cargo system according to claim 1, characterized in that: The forward limiting mechanism (6) includes a forward limiting head (61), which is fixedly mounted on the floor (7) in the unmanned aerial vehicle cabin via a third locking bolt (62), and a horizontal through slot is provided on the rear side of the forward limiting head (61).

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