Air freight container with easy loading

Abstract

The application discloses an aviation container convenient for loading, which comprises a frame made of a metal alloy, a box made of a skin coated on the surface of the frame, a slidingly-installed pull door at the entrance of the front end of the box in a horizontal direction, a receiving cavity formed in the inside of the box at a position below the entrance, a bottom plate slidingly-installed in the receiving cavity in a loading direction, and a linkage mechanism for driving the bottom plate to slide out of the receiving cavity during the opening of the pull door; and an intermediate plate and a top plate arranged in sequence on the top of the bottom plate. The container can directly enter the inside of the container, and personnel directly stand in the inside of the container to unload the goods on the transfer trolley into the container, so that the loading of the goods by manpower is avoided, work efficiency is improved, and the labor intensity of workers is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of air transport, and more specifically to an air container that is easy to load. Background Technology

[0002] In the field of air transport, cargo is typically transported in containers, which are housed in the cargo holds below or above the cabin of passenger aircraft or transport aircraft. One end or side of the cargo container is open for loading and unloading. Because the container is at a certain height above the ground, transfer vehicles cannot easily enter the container directly from the ground. Therefore, personnel usually stand at the open end of the container and manually transfer the cargo from the transfer vehicle to the container. This requires multiple people working together to form a conveyor chain to transfer the cargo, which is labor-intensive. Therefore, if the container structure is modified to allow transfer vehicles or personnel to easily enter the container, the distance required for manual cargo handling will be greatly reduced. Based on this, this invention proposes an air container that facilitates loading. Summary of the Invention

[0003] In order to solve the technical problems existing in the prior art, the present invention provides an aviation container that is easy to load.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an air container for easy loading, comprising a frame made of metal alloy and a box body made of skin covering the surface of the frame. A sliding door is slidably installed at the entrance of the front end of the box body in the horizontal direction. A storage cavity is formed inside the box body located below the entrance. A bottom plate is slidably installed in the storage cavity in the loading direction. When the sliding door is opened, the bottom plate is driven out of the storage cavity by a linkage mechanism. A middle plate and a top plate are arranged sequentially on the top of the bottom plate. When the bottom plate extends outside the storage cavity, the top plate slides relative to the bottom plate in its width direction and is eventually set in an inclined state. One end of the inclined top plate is supported on the ground, and the other end is connected to the outer end of the bottom plate. Subsequently, the middle plate rises vertically relative to the bottom plate until it is flush with the bottom of the entrance.

[0005] Preferably, the linkage mechanism includes a first rack mounted on the base plate, a second rack connected to the sliding door, and a first gear and a second gear arranged at the top of the storage cavity; the first rack is fixedly mounted on the inner end of the base plate and extends along its width direction; two connecting short columns are fixedly fixed in parallel along the vertical direction at the bottom of the sliding door, and the bottom of each of the two connecting short columns is connected to a first connecting rod, and the two first connecting rods extend along the width direction of the base plate and are respectively connected to the two ends of the second rack, which is arranged along the length direction of the base plate; the first gear and the second gear are arranged concentrically in the vertical direction, and the two are rotatably connected to the top of the storage cavity through the fixed columns, the second rack meshes with the first gear, and the first rack meshes with the second gear; two telescopic support members are also fixed at the top of the storage cavity, and the movable end of each telescopic support member is fixedly connected to the inner end of the base plate.

[0006] Preferably, the base plate has horizontal grooves at both ends along its length, which extend along the width of the base plate. The horizontal grooves are connected to a vertical groove at their outer ends, and an arc-shaped groove is connected to the bottom of the vertical groove. Vertical plates are fixedly connected to both ends of the inner side of the top plate along its length. A second slider is connected to the bottom of the vertical plate and is embedded in the horizontal groove and slidably connected thereto. The top plate and the base plate have the same cross-section. A space is reserved between the outer end of the middle plate and the outer end of the base plate / top plate. When the second slider slides to the outer end of the horizontal groove, this space allows the top plate to move vertically relative to the base plate. Four hydraulic cylinders are pre-embedded inside the base plate, and the piston end of each hydraulic cylinder is connected to the bottom of the middle plate.

[0007] Preferably, the base plate is further fitted with fixed frames at both ends along its length. Trapezoidal sliding plates are elastically slidably connected to the interior of the fixed frames in the vertical direction. When the top plate slides horizontally relative to the base plate, the second slider at the bottom of the vertical plate, the two inclined surfaces of the trapezoidal sliding plate, and the top surface remain in sliding connection. The top of the top plate has an integrally formed, upward-facing, protruding arc-shaped block. Clearance grooves are provided at both ends of the top plate along its length. Rotating rods are hinged within the clearance grooves. Second connecting rods are hinged to the rotating rods near their top positions. The two second connecting rods extend along the inclined direction... After extending to the lowest end of the arc-shaped block, they are connected to the lever. The highest end of the arc-shaped block has a groove that matches the outer diameter of the lever. The bottom of the rotating rod is fixedly connected to the first slider. The inner side of the trapezoidal slide plate has an arc-shaped guide groove corresponding to the rotation trajectory of the first slider. In the initial state, the first slider at the bottom of the rotating rod, which is in a vertical state, is located at the bottom of the arc-shaped guide groove. By sliding the lever along the arc surface of the arc-shaped block into the groove, the second connecting rod drives the rotating rod to rotate, so that the first slider at the bottom of the rotating rod slides out from the opening of the arc-shaped guide groove.

[0008] Preferably, guide posts are fixedly connected to the two sides of the inside of the fixed frame in the vertical direction. The two ends of the trapezoidal slide are inserted into the outside of the guide posts and maintain a sliding fit connection with them. A spring is also sleeved on the outside of the guide posts. One end of the spring is connected to the bottom of the trapezoidal slide and the other end is connected to the bottom of the fixed frame. The restoring force of the spring is directed towards the side where the trapezoidal slide is located.

[0009] Preferably, two support rods are also hidden at the bottom of the base plate. When the base plate slides to the outside of the storage cavity, the two support rods at the bottom rotate 90° synchronously to support the ground.

[0010] Preferably, both ends of the rotating parts of the two support rods are fixedly connected to sprockets, and a third connecting rod is rotatably installed inside the base plate near its inner edge. A third gear is fixedly sleeved at both ends of the third connecting rod, and sprockets are also sleeved at the positions of the third gears at both ends of the third connecting rod. A chain is connected between the three sprockets for transmission. A straight guide groove is formed at the bottom of the receiving cavity corresponding to the sliding direction of the third gear, and a third rack that meshes with the third gear is installed in the straight guide groove near its opening.

[0011] Preferably, the front end of the box is equipped with slide rails above and below the entrance, and two guide wheels are installed on the inside of the sliding door, with the two guide wheels distributed on the diagonal of the sliding door. Each guide wheel is embedded in the corresponding slide rail and slidably connected to it.

[0012] Compared with the prior art, the present invention provides an aviation container that is easy to load, having the following features:

[0013] Beneficial effects:

[0014] (1) The container entrance of the present invention adopts a sliding door structure. During the opening process, the sliding door will drive the bottom plate to slide out from the storage cavity through the linkage mechanism. The bottom plate is located between the ground and the container entrance, which can facilitate personnel to step into the container. In addition, the top plate at the top of the bottom plate slides relative to the bottom plate along its width direction and is eventually set in an inclined state. One end of the inclined top plate is supported on the ground, and the other end is connected to the outer end of the bottom plate. Then, under the action of the hydraulic cylinder, the middle plate rises vertically relative to the bottom plate to be level with the lowest end of the entrance. The transfer cart moves to the middle plate first through the guidance of the top plate. Then, the hydraulic cylinder drives the middle plate to rise to be level with the entrance. Personnel can directly push the transfer cart into the container. Personnel can directly stand inside the container to unload the goods on the transfer cart into the container, avoiding the use of manual pick-up and drop-off for loading goods. This can improve work efficiency and reduce the labor intensity of workers to the greatest extent.

[0015] (2) When the transfer vehicle does not need to enter the box, the first slider at the bottom of the rotating rod is located at the bottom of the arc guide groove. At this time, the lever is located at the lowest end of the arc. When the second slider slides in the horizontal groove, it will push the trapezoidal slide downward. The top of the trapezoidal slide is blocked by the first slider in the vertical direction. Therefore, the trapezoidal slide is locked in this state. No matter how the personnel step on the arc block, they will not easily generate a pulling force on the lever. Therefore, the bottom plate, middle plate and top plate can form a stable structure for personnel to step on. The whole device can be adjusted according to the loading requirements of the goods on site, and is flexible and convenient to use. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the external structure of the entire container in the embodiment;

[0018] Figure 2 This is a schematic diagram of the container structure in the embodiment, excluding sliding doors;

[0019] Figure 3 This is a schematic diagram showing the arrangement of the slide rails on the housing in the embodiment;

[0020] Figure 4 for Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0021] Figure 5 This is a schematic diagram of the structure at the bottom of the entire container in the embodiment;

[0022] Figure 6 for Figure 5 A schematic diagram of a local structure in the image;

[0023] Figure 7 This is a schematic diagram showing the arrangement of the first gear, the second gear, and the second rack within the storage cavity in the embodiment.

[0024] Figure 8 This is an assembly diagram of the bottom plate, middle plate, and top plate in the initial state of the embodiment;

[0025] Figure 9 for Figure 8 A schematic diagram of a local structure in the image;

[0026] Figure 10 This is a schematic diagram of the trapezoidal sliding plate being assembled within the fixed frame in the embodiment;

[0027] Figure 11This is a schematic diagram showing the bottom plate, middle plate, and top plate in the working state in the embodiment.

[0028] Figure 12 This is a schematic diagram of the cross-sectional state of the trapezoidal sliding plate in this embodiment;

[0029] Figure 13 This is a schematic diagram showing the connection between the two support rods inside the base plate in the embodiment;

[0030] Figure 14 This is a schematic diagram showing the distribution of the linear guide grooves at the bottom of the receiving cavity in the embodiment;

[0031] Figure 15 This is a schematic diagram of the entire container in the cargo transfer state in the example.

[0032] In the diagram: 1. Frame; 2. Skin; 3. Sliding door; 4. Slide rail; 5. Base plate; 6. Entrance; 7. Storage cavity; 8. Telescopic support; 9. Support rod; 10. First gear; 11. Second gear; 12. First rack; 13. Second rack; 14. Fixed column; 15. Connecting short column; 16. First connecting rod; 17. Middle plate; 18. Top plate; 19. Arc block; 20. Rod groove; 21. Clearance groove; 22. Lever; 23. 24. Second connecting rod; 25. Rotating rod; 26. Fixed frame; 27. Trapezoidal slide plate; 28. Vertical plate; 29. ​​Horizontal slide groove; 20. First slider; 31. Second slider; 32. Arc-shaped slide groove; 33. Arc-shaped guide groove; 34. Guide post; 35. Spring; 36. Hydraulic cylinder; 37. Sprocket; 38. Chain; 39. Third connecting rod; 40. Straight guide groove; 41. Third rack; 42. Guide wheel; 43. Third gear. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] Please see Figures 1 to 15This embodiment proposes an easy-to-load aviation container, comprising a frame 1 made of metal alloy and a box body made of a skin 2 covering the surface of the frame 1. The frame 1 is made of 7-series aluminum profiles, which not only meets the strength requirements of the container but also reduces its overall weight. The skin 2 covering the frame 1 is made of composite material, which not only meets the high strength requirements of the container but also improves its heat resistance. To facilitate opening the container, a sliding door 3 is installed horizontally at the entrance 6 at the front of the box body. Figures 1 to 4 As shown, the front end of the box is equipped with slide rails 4 above and below the entrance 6, and two guide wheels 41 are installed on the inner side of the sliding door 3. The two guide wheels 41 are distributed on the diagonal of the sliding door 3. Each guide wheel 41 is embedded in the corresponding slide rail 4 and slidably connected to it. In the initial state, the sliding door 3 is located at the entrance 6 and is in a sealed state. The two slide rails 4 are stepped at the positions corresponding to the guide wheels 41. The guide wheels 41 open the sliding door 3 through the step guiding effect of the slide rails 4.

[0035] like Figure 2 , Figures 5 to 8 As shown, a storage cavity 7 is formed inside the box located below the entrance 6. A bottom plate 5 is slidably installed in the storage cavity 7 along the loading direction, and the sliding door 3 drives the bottom plate 5 to slide out of the storage cavity 7 through a linkage mechanism during opening. A middle plate 17 and a top plate 18 are arranged sequentially on the top of the bottom plate 5. After the bottom plate 5 extends outside the storage cavity 7, the top plate 18 slides relative to the bottom plate 5 along its width direction and is eventually set in an inclined state. One end of the inclined top plate 18 is supported on the ground, and the other end is connected to the outer end of the bottom plate 5. Then the middle plate 17 rises vertically relative to the bottom plate 5 until it is flush with the bottom of the entrance 6. When implementing the above plan, personnel first push and pull the sliding door 3 to open it. As the door opens, it causes the bottom plate 5 to slide out of the storage cavity 7. Finally, the inner side of the bottom plate 5 is flush with the opening of the storage cavity 7. The middle plate 17 and top plate 18 on the bottom plate 5 have two usage modes. When the transfer vehicle does not need to enter the box, the bottom plate 5, middle plate 17, and top plate 18 form a single structure for personnel to step on, preventing the entrance 6 of the box from being too high and causing tripping. When the transfer vehicle needs to enter the box, then... First, drive the top plate 18 to move towards the outer end of the bottom plate 5 until one end of the top plate 18 is tilted and supported on the ground. At this time, the middle plate 17 on the top of the bottom plate 5 is exposed. The transfer car can move onto the middle plate 17 through the guidance of the top plate 18. Then, through the vertical movement of the middle plate 17 relative to the bottom plate 5, the transfer car can be lifted to the entrance 6. Personnel can then push the transfer car horizontally to push it into the container. Finally, personnel can move and stack the goods of the transfer car inside the container.

[0036] Specifically, such as Figures 5 to 7As shown, the linkage mechanism in this example includes a first rack 12 mounted on the base plate 5, a second rack 13 connected to the sliding door 3, and a first gear 10 and a second gear 11 arranged at the top of the storage cavity 7.

[0037] The first rack 12 is fixedly installed on the inner end of the base plate 5 and extends along its width. Two short connecting posts 15 are fixed vertically parallel to the bottom of the sliding door 3. Each of the two short connecting posts 15 is connected to a first connecting rod 16 at its bottom. Both first connecting rods 16 extend along the width of the base plate 5 and are respectively connected to both ends of the second rack 13. The second rack 13 is arranged along the length of the base plate 5. The first gear 10 and the second gear 11 are arranged concentrically in the vertical direction and are rotatably connected to the top of the storage cavity 7 via a fixing post 14. The second rack 13 meshes with the first gear 10, while the first rack 12 meshes with the second gear 11. During the opening process, the sliding door 3 drives the second rack 13 to move along the length of the base plate 5. When the second rack 13 moves to mesh with the first gear 10, it drives the first gear 10 and the second gear 11 to rotate synchronously. After the second gear 11 meshes with the first rack 12, it drives the base plate 5 to move along the length of the first rack 12, thereby pushing the base plate 5 out of the storage cavity 7. Since there is a gap between the two sides of the base plate 5 and the inside of the storage cavity 7, in order to ensure the stability of the base plate 5 when sliding along the length of the first rack 12, two telescopic support members 8 are fixed at the top inside the storage cavity 7 in this example. The movable end of each telescopic support member 8 is fixedly connected to the inner end of the base plate 5. During the outward movement of the base plate 5, the movable end of the telescopic support member 8 extends and moves synchronously with the base plate 5, which can ensure the stability of the movement of the base plate 5.

[0038] Furthermore, such as Figure 8 and Figure 9As shown, in this embodiment, the base plate 5 has horizontal grooves 28 at both ends along its length direction. The horizontal grooves 28 extend along the width direction of the base plate 5. A vertical groove is connected to the extended end of the horizontal grooves 28 facing the outside of the base plate 5. An arc-shaped groove 31 is connected to the bottom of the vertical groove. A vertical plate 27 is fixedly connected to both ends of the inner side of the top plate 18 along its length direction. A second slider 30 is connected to the bottom of the vertical plate 27. The second slider 30 is embedded in the horizontal groove 28 and slidably connected thereto. The top plate 18 and the base plate 5 have the same cross-section, that is, they have the same specifications. The outer end of the middle plate 17 has a reserved space with the outer end of the base plate 5 / top plate 18. When the second slider 30 slides to the outer end of the horizontal groove 28, this space allows the top plate 18 to move vertically relative to the base plate 5. In this implementation, the top plate 18 is driven by external force to move towards the outer end of the bottom plate 5. The second slider 30 at the bottom of the vertical plate 27 slides within the horizontal groove 28. When the inner end of the top plate 18 moves to the outermost end of the middle plate 17, the second slider 30 is also positioned at the top of the vertical groove. Under the action of the second slider 30, the top plate 18 moves downward. When the second slider 30 slides to the bottom of the vertical groove, the bottom surface of the top plate 18 contacts the top of the bottom plate 5. The top plate 18 rotates relative to the outermost end of the bottom plate 5. During the rotation, the second slider 30 enters the arc-shaped groove 31, and finally the top plate 18 is in the position of... Figure 11 The state shown is as follows. Four hydraulic cylinders 35 are pre-embedded inside the base plate 5. The piston end of each hydraulic cylinder 35 is connected to the bottom of the intermediate plate 17. The hydraulic cylinders 35 drive the intermediate plate 17 to move vertically relative to the base plate 5, thereby lifting the intermediate plate 17 to be flush with the inlet 6, so that the transfer vehicle can enter the box.

[0039] Additionally, after the sliding door 3 is opened, the bottom plate 5 slides to the outside of the storage cavity 7. When the transfer vehicle is not needed to enter the box, the top plate 18, the middle plate 17, and the bottom plate 5 need to be relatively fixed to prevent relative sliding between the top plate 18 and the bottom plate 5, which could cause people to slip and fall. To achieve the above purpose, such as Figure 8 and Figure 12As shown, in this embodiment, a fixed frame 25 is assembled at both ends of the base plate 5 along its length direction. A trapezoidal sliding plate 26 is elastically slidably connected inside the fixed frame 25 along the vertical direction. When the top plate 18 slides horizontally relative to the base plate 5, the second slider 30 at the bottom of the vertical plate 27 and the two inclined surfaces and the top surface of the trapezoidal sliding plate 26 remain slidably connected. The top of the top plate 18 has an integrally formed arc-shaped block 19 with its arc surface facing upwards. Both ends of the top plate 18 have clearance grooves 21, and a rotating rod 24 is hinged within each clearance groove 21. A second connecting rod 23 is hinged to the rotating rod 24 near its top. The two second connecting rods 23 extend in an inclined direction to the lowest point of the arc-shaped block 19 and then connect together to the lever 22. The highest point of the arc-shaped block 19 has a rod groove 20 that matches the outer diameter of the lever 22. A first slider 29 is fixedly connected to the bottom of the rotating rod 24. An arc-shaped guide groove 32 is formed on the inner side of the trapezoidal sliding plate 26 corresponding to the rotation trajectory of the first slider 29. In the initial state, referring to… Figure 12 As shown, the first slider 29 at the bottom of the vertical rotating rod 24 is located at the bottom of the arc-shaped guide groove 32, and the lever 22 is located at this time. Figure 12 At the indicated position, when the second slider 30 slides within the horizontal groove 28, it exerts a downward pushing force on the trapezoidal slide plate 26. However, the top of the trapezoidal slide plate 26 is blocked by the first slider 29 in the vertical direction. Therefore, in this state, the trapezoidal slide plate 26 is locked, meaning the second slider 30 cannot slide within the horizontal groove 28, and the lever 22 is located... Figure 12 At the indicated location, since the lever 22 is located at the lowest end of the arc, no matter how a person steps on the arc block 19, it will not easily generate a pulling force on the lever 22. Therefore, the bottom plate 5, the middle plate 17, and the top plate 18 can form a stable structure. When the transfer vehicle needs to enter the box, the personnel can manually operate the lever 22 to slide it along the arc surface of the arc block 19 into the rod groove 20. During the sliding process, the lever 22 drives the rotating rod 24 to rotate counterclockwise through the second connecting rod 23, so that the first slider 29 at the bottom of the rotating rod 24 slides out from the opening of the arc guide groove 32. When the first slider 29 slides out from the arc guide groove 32, it loses its blocking effect on the trapezoidal sliding plate 26. At this time, the top plate 18 can slide relative to the bottom plate 5.

[0040] like Figure 10As shown, in this example, guide posts 33 are fixedly connected vertically on both sides of the fixed frame 25. The two ends of the trapezoidal slide plate 26 are inserted into the outside of the guide posts 33 and maintain a sliding fit with them. A spring 34 is also sleeved on the outside of the guide posts 33. One end of the spring 34 is connected to the bottom of the trapezoidal slide plate 26, and the other end is connected to the bottom of the fixed frame 25. The restoring force of the spring 34 is directed towards the side where the trapezoidal slide plate 26 is located. When the second slider 30 slides towards the outer end of the base plate 5 inside the horizontal slide groove 28, the second slider 30 acts on the inclined surface of the trapezoidal slide plate 26, thereby determining that the trapezoidal slide plate 26 moves into the fixed frame 25. When the second slider 30 moves to the top of the trapezoidal slide plate 26, the trapezoidal slide plate 26 moves to its maximum stroke inside the fixed frame 25, and the spring 34 is in a compressed state. When the second slider 30 continues to move towards the outer end of the base plate 5, the trapezoidal slide plate 26 gradually returns to its initial position under the action of the spring 34.

[0041] In addition, since the base plate 5 in this embodiment needs to bear the weight of the transfer vehicle or personnel after extending out of the storage cavity 7, the two telescopic support members 8 on one side alone are far from meeting the load-bearing requirements. Therefore, in this example, two support rods 9 are also hiddenly installed at the bottom of the base plate 5. When the base plate 5 slides to the outside of the storage cavity 7, the two support rods 9 at the bottom rotate 90° synchronously and support the ground, thereby ensuring the load-bearing capacity of the base plate 5.

[0042] like Figure 6 and Figure 13 As shown, sprockets 36 are fixedly connected to both ends of the rotating parts of the two support rods 9. A third connecting rod 38 is rotatably installed inside the base plate 5 near its inner edge. A third gear 42 is fixedly sleeved at both ends of the third connecting rod 38. The third gear 42 is installed at the inner edge of the base plate 5, ensuring that the two support rods 9 first slide with the base plate 5 to the outside of the receiving cavity 7 before engaging with the third rack 40 to drive the support rods 9 to rotate. This allows the two support rods 9 to rotate smoothly to support the ground. Sprockets 36 are also sleeved at both ends of the third connecting rod 38 near the third gear 42. A chain 37 connects the three sprockets 36. Figure 14As shown, a straight guide groove 39 is formed at the bottom of the storage cavity 7 corresponding to the sliding direction of the third gear 42. A third rack 40, meshing with the third gear 42, is installed near the opening of the straight guide groove 39. During the sliding of the base plate 5 outwards from the storage cavity 7, the third gear 42 slides in the straight guide groove 39. At this time, the third gear 42 is in its idle stroke. Once the two support rods 9 at the bottom of the base plate 5 have slid to the outside of the storage cavity 7, the third gear 42 begins to mesh with the third rack 40 at the opening of the straight guide groove 39. When the base plate 5 has completely slid to the outside of the storage cavity 7, the two support rods 9, under the action of the sprocket 36 and the chain 37, rotate 90° counterclockwise synchronously to support the ground. When the entire sliding door 3 is opened, the top plate 18 is in an inclined state as shown in the image. Figure 15 As shown. After the goods are transferred, when the base plate 5 returns to the storage cavity 7, the two support rods 9 first rotate in opposite directions to return to their initial positions, and then the base plate 5 slides completely into the storage cavity 7.

[0043] In the description of this invention, the terms "first," "second," "another," and "yet another" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of embodiments of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0045] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air freight container facilitating loading, comprising a box made of a skin coated on a frame made of a metal alloy, and a sliding door installed horizontally at an entrance of a front end of the box, characterized in that: The box is internally formed with a receiving cavity at a position below the entrance, a bottom plate is slidingly installed in the receiving cavity along a loading direction, and the bottom plate is slidingly out of the receiving cavity by a linkage mechanism during opening of the pull door; a middle plate and a top plate are arranged in sequence on the top of the bottom plate, when the bottom plate extends out of the receiving cavity, the top plate slides along the width direction of the bottom plate and is finally arranged in an inclined state, one end of the top plate in the inclined state is supported on the ground, and the other end is connected with the outer end of the bottom plate; then the middle plate is lifted along the vertical direction relative to the bottom plate to be flush with the lowermost end of the entrance; The two ends of the bottom plate along the length direction have horizontal sliding grooves which are arranged along the width direction of the bottom plate, the extending end of the horizontal sliding groove towards the outside of the bottom plate is connected with a vertical sliding groove, and the bottom of the vertical sliding groove is connected with an arc-shaped sliding groove; the two ends of the inner side of the top plate along the length direction are fixedly connected with vertical plates, the bottom of the vertical plate is connected with a second sliding block, the second sliding block is embedded into the horizontal sliding groove and is slidingly connected with the horizontal sliding groove; the cross section of the top plate is the same as that of the bottom plate, the outer end of the middle plate is spaced from the outer end of the bottom plate / top plate, when the second sliding block slides to the outer end of the horizontal sliding groove, the space can allow the top plate to move along the vertical direction relative to the bottom plate; four oil cylinders are pre-buried in the interior of the bottom plate, and the piston end of each oil cylinder is connected with the bottom of the middle plate.

2. An aircraft container for facilitating loading as claimed in claim 1, wherein: The linkage mechanism comprises a first rack installed on the bottom plate, a second rack connected with the pull door, and a first gear and a second gear arranged at the top of the receiving cavity; the first rack is fixedly installed on the inner end of the bottom plate and extends along the width direction thereof; two connecting short columns are fixedly arranged in parallel along the vertical direction at the bottom of the pull door, the bottom of each connecting short column is connected with a first connecting rod, the two first connecting rods extend along the width direction of the bottom plate and are respectively connected with the two ends of the second rack, and the second rack is arranged along the length direction of the bottom plate; the first gear and the second gear are concentrically arranged along the vertical direction, and both are rotationally connected with the top of the receiving cavity through a fixed column, the second rack is engaged with the first gear, and the first rack is engaged with the second gear; two telescopic supporting members are fixedly arranged at the top of the receiving cavity, and the movable end of each telescopic supporting member is fixedly connected with the inner end of the bottom plate.

3. An aircraft container for facilitating loading as claimed in claim 1, wherein: The fixed frame is internally and elastically connected in the vertical direction with a trapezoidal slide plate, when the top plate slides horizontally relative to the bottom plate, the second slide block at the bottom of the vertical plate and the two inclined surfaces and the top surface of the trapezoidal slide plate remain in sliding connection; the top plate is integrally formed with a convex arc-shaped block with an arc surface facing upwards, the two ends of the top plate along the length direction are provided with an avoiding slot, a rotating rod is hinged in the avoiding slot, a second connecting rod is hinged to the position close to the top of the rotating rod, the two second connecting rods extend to the lowest end of the arc-shaped block in the inclined direction and are jointly connected to the lever, the highest end of the arc-shaped block is formed with a rod groove matched with the outer diameter of the lever, the bottom of the rotating rod is fixedly connected with a first slide block, the inner side of the trapezoidal slide plate is formed with an arc-shaped guide slot corresponding to the rotating track of the first slide block, in the initial state, the first slide block at the bottom of the rotating rod in the vertical state is located at the bottom of the arc-shaped guide slot, the first slide block is driven to slide out of the opening of the arc-shaped guide slot by rotating the rod groove along the arc surface of the arc-shaped block.

4. An aircraft container for facilitating loading according to claim 3, wherein: The inside of the fixed frame is fixedly connected with guide columns on both sides in the vertical direction, the two ends of the trapezoidal slide plate are inserted into the outside of the guide columns and are in sliding fit connection with the guide columns, the outside of the guide columns is further sleeved with a spring, one end of the spring is connected with the bottom of the trapezoidal slide plate, the other end is connected with the bottom of the fixed frame, the restoring force direction of the spring is towards the side where the trapezoidal slide plate is located.

5. An aircraft container for facilitating loading as claimed in claim 1, wherein: The bottom of the bottom plate is also hiddenly installed with two supporting rods, when the bottom plate slides to the outside of the storage cavity, the two supporting rods at the bottom thereof rotate 90° synchronously and are supported on the ground.

6. An aircraft container for facilitating loading according to claim 5, wherein: The two ends of the rotating part of the two supporting rods are fixedly connected with chain wheels, a third connecting rod is rotatably installed in the inside of the bottom plate close to the inner edge thereof, third gears are fixedly sleeved with the two ends of the third connecting rod, chain wheels are also sleeved with the positions adjacent to the third gears at the two ends of the third connecting rod, a chain is transmissionally connected between the three chain wheels; a straight guide slot is formed in the bottom of the storage cavity corresponding to the sliding direction of the third gear, a third gear rack meshing with the third gear is installed in the straight guide slot close to the opening thereof.

7. An aircraft container for facilitating loading according to claim 6, wherein: The front end of the box body is provided with sliding rails above and below the entrance, two guide wheels are installed on the inner side of the pull door and are distributed on the diagonal lines of the pull door, each guide wheel is embedded in the corresponding sliding rail and is in sliding connection with the sliding rail.

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