Large unmanned transporter container unit freight system and loading method

Abstract

The application discloses a large unmanned transport machine container unit freight system and a loading method, which comprises a roller unit; two rows of roller units are arranged in parallel and at intervals at a center position of an airplane floor, and the two rows of roller units are parallel to a heading; one row of movable guide limiting locks and one row of lateral guide limiting locks are arranged on both sides of the two rows of roller units and are parallel to the two rows of roller units; one row of lateral fixed limiting locks A and one row of lateral fixed limiting locks B are arranged on the outer sides of the movable guide limiting locks and the lateral guide limiting locks and are parallel to the movable guide limiting locks and the lateral guide limiting locks; the lateral fixed limiting locks A, the movable guide limiting locks, the lateral guide limiting locks and the lateral fixed limiting locks B are all provided with vertical guide wheels and vertical limiting plates; the movable guide limiting locks adopt a folding structure; and the movable guide limiting locks are arranged in a sliding mode along the wing span direction. The application can be applied to the loading and freight of various different specifications of container units, and the compatibility and universality are improved.

Description

Technical Field

[0001] This invention belongs to the field of air freight and relates to a large unmanned transport aircraft container unit freight system and loading method. Background Technology

[0002] Air cargo transportation currently relies solely on bulk cargo transport, resulting in low efficiency and capacity. To improve efficiency, economy, and other factors, civil aviation typically utilizes containerized transport. Containerized air freight is a primary mode of transport for both military and civilian aircraft, and the containerized air freight system is a crucial system for loading and transporting containerized units. Depending on the application and usage, containerized units come in various forms. Currently, the standard containerized units used in China's military air freight sector are of five types: A, B, K, L, and M, all selected from international standard containerized unit series. China's civil air freight sector has largely adopted the international standard system, including containerized unit specifications. Due to the large number of civil aviation freight aircraft models, the specifications of the containerized units they carry also vary. Civil aviation freight containerized units come in various specifications, and because pallets are more flexible and economical than containers, they are the most common form of containerized units in civil aviation. The four most commonly used containerized units in civil aviation are Type A, Type B, Type K, and Type M.

[0003] Currently, the operation methods of containerized freight systems for civil transport aircraft both domestically and internationally have high technical requirements, poor compatibility with different specifications of containerized units, limited applicable containerized unit types, and poor versatility. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, such as poor compatibility with different specifications of container units and limited applicable container unit types, and to provide a large unmanned transport aircraft container unit freight system and loading method that can be used for loading and freight of various different specifications of container units, thereby improving compatibility and versatility.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] A large unmanned transport vehicle containerized cargo system includes a roller unit;

[0007] Two rows of roller units are set in parallel at the center of the aircraft floor, and the two rows of roller units are parallel to the heading. On both sides of the two rows of roller units, there is a row of movable guide limit locks and a row of lateral guide limit locks that are parallel to them. On the outside of the movable guide limit locks and the lateral guide limit locks, there is a row of lateral fixed movement limit locks A and a row of lateral fixed movement limit locks B that are parallel to each other.

[0008] The lateral fixed movement limiting lock A, the movable guide limit lock, the lateral guide limit lock, and the lateral fixed movement limiting lock B are all equipped with vertical guide wheels and vertical limit plates; the movable guide limit lock and the lateral guide limit lock adopt a folding structure; the movable guide limit lock is slidably set along the spanwise direction of the wing.

[0009] Preferably, the lateral fixed limiting lock A includes a lateral locking pivot support, a lateral guide rail A is provided on the top of the lateral locking pivot support, a lateral guide rail roller A is vertically rotatably connected to the side of the lateral guide rail A facing the roller unit, a vertical limiting baffle A is provided on the top of the lateral guide rail A, the vertical limiting baffle A extends from the side of the lateral guide rail A facing the roller unit, and the lateral locking pivot support is fixed to the aircraft floor by fasteners.

[0010] Preferably, the lateral fixed movement limiting lock B includes a lateral movement limiting connecting seat, a roller, and a lateral guide rail B. The lateral movement limiting connecting seat is fixed to the aircraft floor by fasteners. The lateral guide rail B is installed on the side of the lateral movement limiting connecting seat away from the roller unit by fasteners. The side guide rail roller B is vertically rotatably connected to the side of the lateral guide rail B facing the roller unit. A vertical limiting baffle C is provided on the top of the lateral guide rail B, and the vertical limiting baffle C extends from the side of the lateral guide rail B facing the roller unit. The roller is installed on the side of the lateral movement limiting connecting seat near the roller unit, and the roller is rotatably connected to the lateral movement limiting connecting seat along the wingspan.

[0011] Preferably, the movable guide limit lock includes a movable guide body, a movable guide base, and a movable guide slide rail. Fasteners fix the movable guide slide rail to the aircraft floor. The guide slide rail is provided with a slide rail along the wingspan. The bottom of the movable guide base is slidably connected to the slide rail. The movable guide base and the movable guide slide rail are provided with fixing components. The movable guide body is rotatably connected to the end of the movable guide base away from the roller unit by a return torsion spring. A movable guide roller is rotatably connected to the side of the movable guide body facing the roller unit. A vertical limit baffle B is installed on the top of the movable guide body and extends from the side of the movable guide body facing the roller unit. A movable directional roller is rotatably connected to the end of the movable guide base near the roller unit along the wingspan.

[0012] Preferably, the lateral guide limit lock includes a limit pressure plate, a guide body, and a movable guide mounting bracket. The guide body is fixed to the aircraft floor by fasteners. The movable guide mounting bracket is vertically rotatably connected to a guide roller. The diameter of the guide roller is larger than the width of the movable guide mounting bracket. The movable guide mounting bracket is rotatably mounted on the top of the guide body by a reset torsion spring. The limit pressure plate is mounted on the top of the movable guide mounting bracket and extends from the side of the movable guide mounting bracket toward the roller unit.

[0013] Preferably, two rows of manual bidirectional movement limiting locks are slidably connected on the aircraft ground rail. The two rows of manual bidirectional movement limiting locks are located on the side of the two rows of roller units facing outward from the wing span. The manual bidirectional movement limiting lock includes a manual bidirectional limit lock base, a manual bidirectional limit lock tongue A, and a manual bidirectional limit lock tongue B. The manual bidirectional limit lock base is slidably connected to the aircraft ground rail and fixed in position by fasteners. The manual bidirectional limit lock tongue A and the manual bidirectional limit lock tongue B are rotatably connected to the manual bidirectional limit lock base through a return torsion spring. The manual bidirectional limit lock tongue A and the manual bidirectional limit lock tongue B are arranged crosswise and limit each other in the upward rotation direction.

[0014] Preferably, each of the two rows of roller units is provided with an end-fixed movement limiting lock at one end near the machine head.

[0015] Preferably, a universal ball bearing transmission unit is laid flat at the rear end of the tailgate. The universal ball bearing transmission unit includes a flat plate laid at the rear end of the tailgate, and multiple universal balls are provided on the flat plate.

[0016] Preferably, an automatic door lock is provided at the rear of the tailgate. The automatic door lock includes a door lock limit guide body, a torsion spring, a door limit guide mounting seat, and a mounting bracket. The mounting bracket is fixed to the aircraft floor by fasteners. The door limit guide mounting seat is installed on the mounting bracket. The rear end of the door lock limit guide body is rotatably connected to the door limit guide mounting seat by the torsion spring. The torsion spring lifts the door lock limit guide body upward, and the front end of the door lock limit guide body faces the interior of the cabin.

[0017] A loading method for a large unmanned transport aircraft containerized cargo system involves sequentially pushing containerized units of different sizes into the aircraft cabin, and selecting different combinations of lateral limiting mechanisms to fix and limit the containerized units according to their size specifications.

[0018] Lateral fixed movement limiting lock A and lateral fixed movement limiting lock B work together to achieve wing spanwise and vertical limiting of extra-large container units; lateral fixed movement limiting lock B works together with movable guide limit lock to achieve wing spanwise and vertical limiting of medium and large container units; lateral fixed movement limiting lock A works together with lateral guide limit lock to achieve wing spanwise and vertical limiting of medium and large container units; movable guide limit lock works together with lateral guide limit lock to achieve wing spanwise and vertical limiting of small and medium-sized container units.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention utilizes two rows of lateral limiting mechanisms on both sides of the two rows of roller units. Different combinations of these mechanisms are selected based on the size and specifications of the container unit to fix and limit its movement. The movable guide limit lock slides along the wing span, increasing the number of container units it can accommodate. Lateral fixed limit lock A and lateral fixed limit lock B work together to achieve wing span and vertical limiting for extra-large container units; lateral fixed limit lock B and movable guide limit lock work together to achieve wing span and vertical limiting for medium and large container units; lateral fixed limit lock A and lateral guide limit lock work together to achieve wing span and vertical limiting for medium and large container units; and movable guide limit lock and lateral guide limit lock work together to achieve wing span and vertical limiting for small and medium-sized container units. This allows for compatibility with the loading and transportation of 12 common types of containers and cargo pallets. Furthermore, the movable guide limit lock and lateral guide limit lock employ a folding structure, allowing them to be folded when not in use to avoid interference with the container unit.

[0021] Furthermore, by sliding and adjusting the base of the manual two-way limit lock on the aircraft ground rail, it can adapt to the heading and reverse heading limits as well as vertical limits of various container units of different specifications. The manual two-way limit lock tongue A and the manual two-way limit lock tongue B have a mechanical interlocking function. One manual two-way limit lock can realize the vertical and heading limits of two adjacent container units, and can be unlocked manually. It has high reliability and balanced load.

[0022] Furthermore, a universal ball bearing transfer unit is installed at the tailgate, which can be used to smoothly load the container unit.

[0023] Furthermore, the tailgate is equipped with an automatic door lock that automatically locks after the container unit is successfully loaded, thereby limiting the course and preventing the container unit from slipping during loading and unloading. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the large unmanned transport aircraft container unit freight system of the present invention;

[0025] Figure 2 This is a top view of the structure of the large unmanned transport aircraft container unit freight system of the present invention;

[0026] Figure 3 This is a schematic diagram of the roller unit structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the end-fixed movement-limiting lock structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the lateral fixed movement limiting lock A structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the lateral fixed movement limiting lock B structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the active guide limit lock structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the lateral guide and limiting lock structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the manual bidirectional movement limiting lock structure of the present invention;

[0033] Figure 10 This is a schematic diagram of the universal ball transmission unit structure of the present invention;

[0034] Figure 11 This is a schematic diagram of the guide rail guide lock structure of the present invention;

[0035] Figure 12 This is a schematic diagram of the automatic door lock structure of the present invention.

[0036] Among them: 1. End fixed movement limiting lock, 2. Aircraft floor, 3. Lateral fixed movement limiting lock A, 4. Movable guide limit lock, 5. Roller unit, 6. Manual bidirectional movement limiting lock, 7. Lateral guide limit lock, 8. Lateral fixed movement limiting lock B, 9. Universal ball transmission unit, 10. Guide rail guide lock, 11. Automatic door lock, 12. Lateral lock mounting bracket, 13. Vertical limit baffle A, 14. Lateral guide rail A, 15. Lateral guide rail roller A, 16. Movable guide body, 17. Vertical limit baffle B, 18. Movable guide roller, 19. Movable yaw roller, 20. Movable guide base, 21. Movable guide slide rail, 22. Roller mounting bracket. 23. Roller, 24. Manual bidirectional limit lock base, 25. Manual bidirectional limit lock tongue A, 26. Manual bidirectional limit lock tongue B, 27. Limiting pressure plate, 28. Guide body, 29. Movable guide mounting bracket, 30. Guide roller, 31. Vertical limit baffle C, 32. Lateral movement limiting connecting seat, 33. Roller, 34. Side guide rail roller B, 35. Side guide rail B, 36. Flat plate, 37. Universal ball bearing, 38. Guide wheel connecting seat, 39. Guide rail guide wheel, 40. Guide rail guide lock mounting bracket, 41. Door lock limit guide body, 42. Torsion spring, 43. Door limit guide mounting seat, 44. Mounting bracket. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] A schematic diagram of the freight system structure of the present invention is shown below. Figure 1 and Figure 2 As shown, the large unmanned transport aircraft containerized cargo transport system includes an end fixed movement limit lock 1, an aircraft floor 2, a lateral fixed movement limit lock A3, a movable guide limit lock 4, a roller unit 5, a manual two-way movement limit lock 6, a lateral guide limit lock 7, a lateral fixed movement limit lock B8, a universal ball bearing transmission unit 9, a guide rail guide lock 10, and an automatic door lock 11. Through the coordinated action of the above components, the rapid loading and reliable air transport of containerized units within the large unmanned transport aircraft cabin are achieved.

[0041] In this invention, two rows of roller units 5 are arranged parallel to each other at the center of the aircraft floor 2, and the two rows of roller units 5 are parallel to the heading. The roller units 5 are used for guiding and supporting the container unit in both the heading and reverse heading directions. Figure 3 As shown, a single roller unit 5 in a row is equipped with a roller mounting bracket 22 to simultaneously mount a set of three rollers 23. The rollers 23 are rotatably connected to the roller mounting bracket 22 along the wing span to support the container unit. This can effectively ensure the balanced force on the bottom of the container unit, while reducing the resistance when the container unit moves along the heading and against the heading, which is beneficial to improving the smoothness of the heading guidance when loading the container unit.

[0042] In this invention, the end-fixed movement limiting lock 1 is installed on the aircraft floor 2 at the end of the main cabin of a large unmanned transport aircraft. Two end-fixed movement limiting locks 1 are symmetrically installed along the flight direction, and the two end-fixed movement limiting locks 1 are respectively located at the ends of the two rows of roller units 5 near the nose of the aircraft. Figure 4 As shown, the end-fixed movement limiting lock 1 includes a horizontal part and a vertical part that are perpendicular to each other. A reinforcing rib is provided between the horizontal part and the vertical part. The end-fixed movement limiting lock 1 is an integrated mechanical structure with a simple structure and strong yaw and vertical load-bearing capacity.

[0043] In this invention, a row of lateral fixed movement limiting locks A3 and a row of lateral fixed movement limiting locks B8 are installed on the aircraft floor 2 inside the cabin of a large unmanned transport aircraft. They are symmetrically installed along the flight direction and are located on both sides of the two rows of roller units 5. The lateral fixed movement limiting locks A3 and B8 work together to achieve the spanwise and vertical limiting of the extra-large container unit, and also have the function of guiding in the flight direction and reverse flight direction, ensuring the smooth loading and unloading of the container unit.

[0044] like Figure 5 As shown, the lateral fixed limiting lock A3 includes a lateral locking pivot support 12, a vertical limiting baffle A13, a lateral guide rail A14, and a lateral guide rail roller A15. The lateral guide rail A14 is mounted on the top of the lateral locking pivot support 12. The lateral guide rail A14 is vertically rotatably connected to the lateral guide rail roller A15 on the side facing the roller unit 5. The vertical limiting baffle A13 is provided on the top of the lateral guide rail A14 and extends from the side of the lateral guide rail A14 facing the roller unit 5. The lateral locking pivot support 12 is connected to the aircraft ground by fasteners. Plate 2 is fixedly connected, and the vertical limiting baffle A13 realizes the vertical limiting of the container unit. The combination of lateral guide rail A14 and lateral guide rail roller A15 realizes the limiting of the container unit in the spanwise direction. The lateral guide rail roller A14 can realize the guidance of the container unit in the heading or reverse heading. The lateral fixed movement limiting lock A3 has a simple structure, good reliability, convenient disassembly and assembly, and high power-to-weight ratio. It can realize the vertical and spanwise limiting of the container unit, and has the guiding function in the heading or reverse heading, which improves the loading smoothness of the container unit and effectively ensures the movement limitation of the container unit.

[0045] like Figure 6 As shown, the lateral fixed movement limiting lock B8 includes a vertical limiting baffle C31, a lateral movement limiting connecting seat 32, a roller 33, a side guide rail roller B34, and a lateral guide rail B35. The lateral fixed movement limiting lock B8 is fastened to the lateral movement limiting connecting seat 32 and the aircraft floor 2 by fasteners. The lateral guide rail B35 is installed on the side of the lateral movement limiting connecting seat 32 away from the roller unit 5 by fasteners. The side guide rail B35 is vertically rotatably connected to the side of the lateral guide rail B35 facing the roller unit 5, which is used to realize the heading guidance and wing spanwise limitation of the container unit. A vertical limiting baffle C31 is provided on the top of the lateral guide rail B35. The vertical limiting baffle C31 extends from the side of the lateral guide rail B35 facing the roller unit 5, which is used to realize the vertical limitation of the container unit. The roller 33 is installed on the side of the lateral movement limiting connecting seat 32 near the roller unit 5. The roller 33 is rotatably connected to the lateral movement limiting connecting seat 32 along the wing spanwise, which is used to realize the heading or reverse heading guidance and support of the container unit. Its structure is simple and compact, easy to disassemble and assemble, and can effectively ensure the loading and limitation of the container unit.

[0046] A row of movable guide limit locks 4 parallel to the lateral fixed movement limit lock A3 is provided between the lateral fixed movement limit lock A3 and the roller unit 5. The lateral fixed movement limit lock B8 and the movable guide limit lock 4 work together to achieve the spanwise and vertical limit of the container units of different specifications.

[0047] like Figure 7 As shown, the movable guide limit lock 4 includes a movable guide body 16, a vertical limit baffle B17, a movable guide roller 18, a movable directional roller 19, a movable guide base 20, and a movable guide slide rail 21.

[0048] The movable guide limit lock 4 secures the movable guide slide rail 21 to the aircraft floor 2 with fasteners. The guide slide rail 21 has a slide rail along the wingspan. The bottom of the movable guide base 20 is slidably connected to the slide rail, allowing the movable guide base 20 to be manually moved on the movable guide slide rail 21. The movable guide base 20 and the movable guide slide rail 21 are fixed in position by fasteners. The movable guide body 16 is rotatably connected to the end of the movable guide base 20 away from the roller unit 5 by a return torsion spring. The movable guide roller 18 is vertically rotatably connected to the side of the movable guide body 16 facing the roller unit 5, achieving wingspan limitation of the container unit. Simultaneously, the movable guide body 16 can be folded towards the roller unit 5 by the return torsion spring. When loading and unloading extra-large container units, it can be folded... The weight of the container unit causes the movable guide body 16 to fold. A vertical limiting baffle B17 is installed on the movable guide body 16 and extends from the side of the movable guide body 16 toward the roller unit 5 to achieve vertical limiting of the container unit. A movable directional roller 19 is rotatably connected to the end of the movable guide base 16 near the roller unit 5 along the wing span, which is used to realize loading, unloading and support of the container unit in the directional or reverse direction. The movable guide limiting lock has a compact structure, high power-to-weight ratio, good reliability, and convenient disassembly and assembly. It can simultaneously realize vertical and wing span span limiting of the container unit and has directional or reverse direction guiding function, which improves the loading smoothness of the container unit and effectively ensures the limited movement of the container unit. The container unit can be guided and supported by the movable directional roller.

[0049] The movable guide limit lock 4 can be adjusted in position by sliding on the movable guide rail 21 via the movable guide base 20, adapting to the spanwise and vertical limit of various container units.

[0050] A row of parallel lateral guide locks 7 is provided between the lateral fixed movement limit lock B8 and the roller unit 5. The lateral fixed movement limit lock A3 and the lateral guide locks 7 work together to achieve the spanwise and vertical limit of the large and medium-sized container units. The movable guide lock 4 and the lateral guide lock 7 work together to achieve the spanwise and vertical limit of the small and medium-sized container units. The lateral fixed movement limit lock A3, the movable guide lock 4, the lateral guide lock 7, and the lateral fixed movement limit lock B8 work together to ensure that the problem of aircraft center of gravity imbalance can be effectively solved when loading container units of different specifications.

[0051] like Figure 8 As shown, the lateral guide limit lock 7 includes a limit pressure plate 27, a guide body 28, a guide roller 30, and a movable guide mounting bracket 29. The lateral guide limit lock 7 secures the guide body 28 to the aircraft floor 2 with fasteners. A movable guide mounting bracket 29 is located on the top of the guide body 28. The movable guide mounting bracket 29 is vertically rotatably connected to the guide roller 30. The diameter of the guide roller 30 is larger than the width of the movable guide mounting bracket 29. The movable guide mounting bracket 29 is rotatably mounted on the guide body 28 using a return torsion spring, realizing the spanwise limit and heading guidance functions of the container unit. Simultaneously, the movable guide mounting bracket 29 can be guided towards the roller unit 5 via the return torsion spring. The folding mechanism allows the movable guide mounting bracket 29 to fold under the weight of the container unit during loading and unloading of extra-large containers, accommodating different container unit sizes. The limiting pressure plate 27 is mounted on the top of the movable guide mounting bracket 29 via a pin and extends from the movable guide mounting bracket 29 toward the roller unit 5 to achieve vertical limiting of the container unit. Its structure is simple, compact, and convenient, and can simultaneously realize the functions of container unit route guidance and vertical limiting, and has the function of adapting to the loading of different container unit sizes.

[0052] In this invention, two rows of manual bidirectional limiting locks 6 are installed on the aircraft ground rail. The two rows of manual bidirectional limiting locks 6 are respectively located on the side of the two rows of roller units 5 facing outwards from the wing span and are fitted to the roller units 5. They are slidably adjusted on the aircraft ground rail by the manual bidirectional limiting lock base 24 to adapt to the heading and reverse heading limits as well as vertical limits of various different specifications of container units. The manual bidirectional limiting lock tongue A25 and the manual bidirectional limiting lock tongue B26 have a mechanical interlocking function and can also be unlocked manually, with high reliability and balanced load.

[0053] like Figure 9As shown, the manual two-way limit lock 6 includes a manual two-way limit lock base 24, a manual two-way limit lock tongue A25, and a manual two-way limit lock tongue B26. The manual two-way limit lock base 24 is slidably connected to the aircraft ground rail and fixed in position by fasteners to accommodate the loading of container units of different sizes. The manual two-way limit lock base 24 is interlocked with the aircraft ground rail. The manual two-way limit lock tongues A25 and B26 are rotatably connected to the manual two-way limit lock base 24 by a pin and a return torsion spring. The manual two-way limit lock tongues A25 and B26 are arranged crosswise. The manual two-way limit lock tongue A25 is provided with a through hole. The manual two-way limit lock tongue B26 is inserted into the through hole and is limited in the upward rotation direction of each other. The two-way interlocking and manual unlocking can be achieved by the return torsion spring. The manual two-way limit lock has a simple and compact structure. It can achieve vertical and directional limit of two adjacent container units with one manual two-way limit lock 6. At the same time, it can be moved on the aircraft ground rail to accommodate the loading of container units of different sizes. Its limit reliability is high, reducing the arrangement of directional limit locks in the cargo system and having a high power-to-weight ratio.

[0054] The tail ends of the lateral fixed movement limit lock A3, the movable guide limit lock 4, the roller unit 5, the manual two-way movement limit lock 6, the lateral guide limit lock 7, and the lateral fixed movement limit lock B8 are all located near the rear end of the aircraft's tail door.

[0055] In this invention, a universal ball bearing transmission unit 9 is laid flat at the rear end of the tailgate, such as... Figure 10 As shown, the universal ball transmission unit 9 includes a flat plate 36, which is laid on the rear end of the tailgate, and multiple universal balls 37 are arranged on the flat plate 36.

[0056] The universal ball transmission unit 9 is equipped with guide rail locks 10 on both sides, such as Figure 11 As shown, the guide rail lock 10 includes a guide wheel connecting seat 38, guide rail guide wheels 39, and guide rail lock mounting supports 40. At least two guide rail lock mounting supports 40 are mounted on the bottom of the guide wheel connecting seat 38. The guide wheel connecting seat 38 is mounted on both sides of the tailgate via the guide rail lock mounting supports 40. Multiple guide rail guide wheels 39 are vertically rotatably connected to the guide wheel connecting seat 38 facing the universal ball bearing transmission unit 9. The two guide wheel connecting seats 38 have an outward V-shaped structure at the end near the rear of the tailgate, facilitating the smooth loading of containerized units. The universal ball bearing transmission unit 9 and the guide rail lock 10 work together to facilitate the smooth loading of containerized units at the tailgate.

[0057] In this invention, an automatic door lock 11 is provided between the rear end of the tailgate and the universal ball bearing transmission unit 9. The automatic door lock 11 functions as a cargo hold sill structure, such as... Figure 12As shown, the automatic door lock 11 includes a door lock limit guide body 41, a torsion spring 42, a door limit guide mounting seat 43, and a mounting bracket 44. The automatic door lock 11 is fastened to the mounting bracket 44 and the aircraft floor 2 by fasteners. The door limit guide mounting seat 43 is mounted on the mounting bracket 44. The rear end of the door lock limit guide body 41 is rotatably connected to the door limit guide mounting seat 43 by a pin and the torsion spring 42. The torsion spring 42 lifts the door lock limit guide body 41 upward. The front end of the door lock limit guide body 41 is set facing the interior of the cabin. When loading a container unit, the door lock limit guide body 41 can be folded by the weight of the container unit to ensure the smooth loading of the container unit. After successful loading, the door lock limit guide body 41 automatically resets by the torsion spring 42 to ensure the directional locking of the container unit. This type of lock is usually installed at the tail door of the aircraft to realize the directional limit of the last container unit.

[0058] The automatic door lock 11 and the manual two-way movement limit lock 6 work together to limit the heading of the container unit in the tail compartment, preventing the container unit from slipping during loading and greatly improving the safety and reliability of loading.

[0059] The process of loading cargo using the aforementioned large unmanned transport aircraft containerized freight system is as follows:

[0060] Different sized container units are pushed into the aircraft cabin in sequence. Based on the size and specifications of the container units, different combinations of lateral limiting mechanisms are selected to fix and limit the container units.

[0061] Lateral fixed movement limiting lock A3 and lateral fixed movement limiting lock B8 work together to achieve wing spanwise and vertical limit of extra-large container units; lateral fixed movement limiting lock B8 and movable guide limit lock 4 work together to achieve wing spanwise and vertical limit of large and medium-sized container units; lateral fixed movement limiting lock A3 and lateral guide limit lock 7 work together to achieve wing spanwise and vertical limit of large and medium-sized container units; movable guide limit lock 4 and lateral guide limit lock 7 work together to achieve wing spanwise and vertical limit of small and medium-sized container units.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed inventive subject matter.

Claims

1. A large unmanned transport aircraft containerized freight system, characterized in that, Includes roller unit (5); Two rows of roller units (5) are set in parallel at the center of the aircraft floor (2), and the two rows of roller units (5) are parallel to the heading. On both sides of the two rows of roller units (5), there is a row of movable guide limit locks (4) and a row of lateral guide limit locks (7) parallel to them. On the outside of the movable guide limit locks (4) and the lateral guide limit locks (7), there is a row of lateral fixed movement limit locks A (3) and a row of lateral fixed movement limit locks B (8) parallel to each other. The lateral fixed movement limit lock A (3), the movable guide limit lock (4), the lateral guide limit lock (7) and the lateral fixed movement limit lock B (8) are all equipped with vertical guide wheels and vertical limit plates; the movable guide limit lock (4) and the lateral guide limit lock (7) adopt a folding structure; the movable guide limit lock (4) is slidably set along the span of the wing; The movable guide limit lock (4) includes a movable guide body (16), a movable guide base (20), and a movable guide slide rail (21). Fasteners fix the movable guide slide rail (21) to the aircraft floor (2). A slide rail along the wingspan is provided on the guide slide rail (21). The bottom of the movable guide base (20) is slidably connected to the slide rail. The movable guide base (20) and the movable guide slide rail (21) are provided with fixing parts. The movable guide body (16) is rotatably connected to the movable guide base by a reset torsion spring. At the end of the seat (20) away from the roller unit (5), the movable guide body (16) is vertically rotatably connected to the side facing the roller unit (5) with a movable guide roller (18). A vertical limiting baffle B (17) is installed on the top of the movable guide body (16) and extends from the side of the movable guide body (16) facing the roller unit (5). A movable directional roller (19) is rotatably connected to the end of the movable guide base (20) near the roller unit (5) along the spanwise direction of the wing. Two rows of manual two-way limit locks (6) are slidably connected on the aircraft ground rail. The two rows of manual two-way limit locks (6) are located on the side of the two rows of roller units (5) facing outward from the wing span. The manual two-way limit lock (6) includes a manual two-way limit lock base (24), a manual two-way limit lock tongue A (25) and a manual two-way limit lock tongue B (26). The manual two-way limit lock base (24) is slidably connected to the aircraft ground rail and fixed in position by fasteners. The manual two-way limit lock tongue A (25) and the manual two-way limit lock tongue B (26) are rotatably connected to the manual two-way limit lock base (24) through a return torsion spring. The manual two-way limit lock tongue A (25) and the manual two-way limit lock tongue B (26) are arranged crosswise and limit each other in the upward rotation direction.

2. The large unmanned transport aircraft containerized freight system according to claim 1, characterized in that, The lateral fixed limiting lock A (3) includes a lateral locking pivot bracket (12), a lateral guide rail A (14) is provided on the top of the lateral locking pivot bracket (12), a lateral guide rail roller A (15) is vertically rotatably connected to the side of the lateral guide rail A (14) facing the roller unit (5), a vertical limiting baffle A (13) is provided on the top of the lateral guide rail A (14), the vertical limiting baffle A (13) extends from the side of the lateral guide rail A (14) facing the roller unit (5), and the lateral locking pivot bracket (12) is fixed to the aircraft floor (2) by fasteners.

3. The large unmanned transport aircraft containerized freight system according to claim 1, characterized in that, The lateral fixed movement limiting lock B (8) includes a lateral movement limiting connecting seat (32), a roller (33) and a lateral guide rail B (35). The lateral movement limiting connecting seat (32) is fixed to the aircraft floor (2) by fasteners. The lateral guide rail B (35) is installed on the side of the lateral movement limiting connecting seat (32) away from the roller unit (5) by fasteners. The side guide rail B (35) is vertically rotatably connected to the side guide rail roller B (34) facing the roller unit (5). A vertical limiting baffle C (31) is provided on the top of the lateral guide rail B (35). The vertical limiting baffle C (31) extends from the side of the lateral guide rail B (35) facing the roller unit (5). The roller (33) is installed on the side of the lateral movement limiting connecting seat (32) close to the roller unit (5). The roller (33) is rotatably connected to the lateral movement limiting connecting seat (32) along the wingspan.

4. The large unmanned transport aircraft containerized freight system according to claim 1, characterized in that, The lateral guide limit lock (7) includes a limit pressure plate (27), a guide body (28) and a movable guide mounting bracket (29). The guide body (28) is fixed to the aircraft (2) floor by fasteners. The movable guide mounting bracket (29) is vertically rotatably connected to a guide roller (30). The diameter of the guide roller (30) is larger than the width of the movable guide mounting bracket (29). The movable guide mounting bracket (29) is rotatably mounted on the top of the guide body (28) by a reset torsion spring. The limit pressure plate (27) is mounted on the top of the movable guide mounting bracket (29). The limit pressure plate (27) extends from the side of the movable guide mounting bracket (29) toward the roller unit (5).

5. The large unmanned transport aircraft containerized freight system according to claim 1, characterized in that, Each of the two rows of roller units (5) is provided with an end-fixed movement limit lock (1) near the head of the machine.

6. The large unmanned transport aircraft containerized freight system according to claim 1, characterized in that, A universal ball bearing transmission unit (9) is laid flat at the rear end of the tailgate. The universal ball bearing transmission unit (9) includes a flat plate (36) laid at the rear end of the tailgate. Multiple universal balls (37) are provided on the flat plate (36).

7. The large unmanned transport aircraft containerized freight system according to claim 1, characterized in that, An automatic door lock (11) is provided at the rear end of the tailgate. The automatic door lock (11) includes a door lock limit guide body (41), a torsion spring (42), a door limit guide mounting seat (43), and a mounting bracket (44). The mounting bracket (44) is fixed to the aircraft floor (2) by fasteners. The door limit guide mounting seat (43) is installed on the mounting bracket (44). The rear end of the door lock limit guide body (41) is rotatably connected to the door limit guide mounting seat (43) by the torsion spring (42). The torsion spring (42) lifts the door lock limit guide body (41) upward. The front end of the door lock limit guide body (41) is set facing the interior of the cabin.

8. A loading method for a large unmanned transport aircraft containerized freight system based on any one of claims 1-7, characterized in that, Different sized and specified container units are pushed into the aircraft cabin in sequence. According to the size and specifications of the container units, different combinations of lateral limiting mechanisms are selected to fix and limit the container units. Lateral fixed movement limit lock A (3) and lateral fixed movement limit lock B (8) work together to achieve the spanwise and vertical limit of the wings of the extra-large container unit; lateral fixed movement limit lock B (8) and movable guide limit lock (4) work together to achieve the spanwise and vertical limit of the wings of the medium and large container units; lateral fixed movement limit lock A (3) and lateral guide limit lock (7) work together to achieve the spanwise and vertical limit of the wings of the medium and large container units; movable guide limit lock (4) and lateral guide limit lock (7) work together to achieve the spanwise and vertical limit of the wings of the small and medium-sized container units.

Images