Combined container

Abstract

The utility model provides a combined container which comprises a container body, a container cover, a top plate and a bottom plate, the container body comprises side walls, a top plate and a bottom plate, and a through opening is formed in the end of the container body; the corner columns are located at the ends of the side walls of the two sides of the box body in the length direction, vertex angle pieces are arranged at the top ends of the corner columns, and the bottom faces of the vertex angle pieces are higher than a top plate of the box body; the folding door assemblies are arranged in pairs, the folding door assemblies arranged in pairs are matched with the through openings in the corresponding sides, each folding door assembly comprises a first door plate and a second door plate connected to the first door plate in a pivoted mode, and the first door plates of the folding door assemblies arranged in pairs are connected to the corresponding corner columns in a pivoted mode. The combined container is provided with an upper-layer structure and a lower-layer structure, the upper layer is of an open carrying structure, the lower layer is of a closed carrying structure, the combined container is suitable for double-layer transportation of automobiles, the closed carrying structure of the lower layer can be used for transporting goods with sealing requirements during returning, and the transportation efficiency and diversified usability of the combined container are improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of container structures, and more particularly to a modular container. Background Art

[0002] Containers, with their standardization, modularization, and efficiency, have significantly driven global economic prosperity and development. By consolidating cargo into standardized metal boxes, they greatly simplify the loading, transport, and unloading processes, reducing loss and damage during transportation while significantly improving transportation efficiency. With the continuous development and improvement of container technology, the variety of containers has also increased, from the initial dry cargo containers to the later refrigerated containers and specialized containers, providing more convenient and secure solutions for the transportation of various types of goods.

[0003] Currently, existing automobile transport containers still have certain limitations in practical use. For example, traditional automobile transport containers can only be used to transport automobiles. When the vehicles need to be returned after transporting, they cannot be loaded with other types of cargo. This also prevents the containers from being rationally utilized to create maximum value. In addition, most existing container doors do not have a folding function, resulting in a large opening and closing radius when transporting cars, which easily causes scratches on the vehicle body.

[0004] Therefore, it is necessary to provide a modular container to at least partially solve the above problems. Utility Model Content

[0005] The Summary of the Utility Model introduces a series of simplified concepts that will be further described in the Detailed Description of the Utility Model. The Summary of the Utility Model of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, the utility model provides a modular container, which includes: a box body, the box body including side walls, a top plate, and a bottom plate, and the ends of the box body have through openings; corner posts, the corner posts are located at the ends of the side walls on both sides of the length direction of the box body, the top ends of the corner posts have top corner pieces, and the bottom surfaces of the top corner pieces are higher than the top plate of the box body; folding door assemblies arranged in pairs, the folding door assemblies arranged in pairs are both adapted to the through openings on the corresponding sides, the folding door assemblies including a first door panel and a second door panel pivotally connected to the first door panel, and the first door panels of the respective folding door assemblies arranged in pairs are pivotally connected to the corresponding corner posts.

[0007] Optionally, the modular container further includes a sealing component arranged around the folding door assembly.

[0008] Optionally, the corner columns include support columns arranged on the ends of the side walls on both sides in the longitudinal direction of the box body, and the top corner pieces are arranged on the upper end surfaces of the support columns.

[0009] Optionally, the top corner piece includes a top corner piece body, a through cavity with an upward opening is constructed inside the top corner piece body, and mounting holes are constructed in a relative manner on the side walls of the top corner piece body, and the mounting holes are connected to the through cavity.

[0010] Optionally, the modular container further comprises connecting beams symmetrically arranged above both sides in the longitudinal direction of the box body, and both ends of the connecting beams are respectively connected to the corresponding corner columns as a whole.

[0011] Optionally, the modular container further includes reinforcing ribs arranged between the connecting beam and the upper end surface of the container body.

[0012] Optionally, the modular container further comprises a folding corner post assembly arranged on the connecting crossbeam; the folding corner post assembly is adapted to rotate from a horizontal state arranged parallel to the connecting crossbeam to a vertical state perpendicular to the connecting crossbeam, wherein, when the folding corner post assembly is arranged in the vertical state, a folding corner piece is provided at the top end of the folding corner post assembly, and the bottom surface of the folding corner piece is higher than the top plate of the box body.

[0013] Optionally, the folding corner post assembly includes a basic corner post, a sliding structure and a folding corner post arranged on the connecting crossbeam, wherein the horizontal plane on which the upper end surface of the basic corner post is located is flush with the horizontal plane on which the upper end surface of the corner post is located, the first end of the folding corner post extends into the sliding structure and is suitable for moving along the sliding structure toward the upper end of the basic corner post, the second end of the folding corner post is suitable for rotating from a horizontal state arranged parallel to the connecting crossbeam to a vertical state perpendicular to the connecting crossbeam, and the lower end of the folding corner post is attached to the upper end surface of the basic corner post as a whole, and an end corner piece is installed at the second end of the folding corner post.

[0014] Optionally, the modular container further comprises a mounting plate attached to the upper end surface of the box body, wherein a protrusion is constructed in the middle area of ​​the mounting plate along its extension direction, and sunken horizontal structures are constructed on both sides of the extension direction of the mounting plate.

[0015] Optionally, a plurality of through holes are arranged at intervals in the extension direction of the sunken horizontal structure.

[0016] Compared with the prior art, the modular container of this utility model has the following significant effects:

[0017] Compared to existing containers, the modular container of this utility model features a double-layer structure, with the upper end surface of the container body serving as the dividing surface. The overall structure of the container body is closed, while the upper end surface of the container body and each corner post together form an open transport structure. This modular container of this utility model is primarily suitable for transporting automobiles. When the modular container transports automobiles and needs to return to the ship, the container body of this utility model can be used to transport goods that require sealing, thereby improving the rational use efficiency of the modular container and realizing the diversified use of the modular container.

[0018] In addition, the modular container in the present invention is equipped with a folding door assembly, which is adapted to the opening. Since the folding door assembly has a folding function during the process of opening and closing the door, the radius range of opening and closing the door is effectively reduced. In this way, position interference with the car body during the process of opening and closing the door can be effectively avoided.

[0019] It should be noted that the closed carrying structure at the lower end and the open carrying structure at the upper end of the combined container in the present invention can both transport cars and other vehicles. In addition, the box body in the combined container in the present invention can also transport other goods with sealing requirements. The box body is equivalent to a half-height box in a general container. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following drawings of the embodiments of the present invention are used as part of the present invention to understand the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0021] Figure 1 This is a schematic diagram of the overall structure of a modular container according to a preferred embodiment of the present utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of a partial three-dimensional structure of a modular container at position I is shown;

[0023] Figure 3 for Figure 1 A magnified view of F in FIG; and

[0024] Figure 4 for Figure 1 Schematic diagram of the overall structure of the folding door assembly connected to the corner column;

[0025] Figure 5 for Figure 1Schematic diagram of the enlarged structure of the top corner fitting at G.

[0026] Among them, 1: box body; A: closed carrying structure; 2: corner column; 21: support column; 22: top corner piece; 221: top corner piece body; 222: through cavity; 223: mounting hole; B: open carrying structure; C: length direction of box body; 3: folding door assembly; 31: first door panel; 32: second door panel; 5: sealing component; 6: connecting beam; 7: reinforcing rib; D: horizontal state; E: vertical state; 8: folding corner column assembly; 80: base corner column; 81: sliding structure; 811: bottom plate; 812: side plate; 813: screw; 814: slide groove; 82: folding corner column; 83: end corner piece; 9: mounting plate; 91: raised portion; 92: sunken horizontal structure; 93: through hole. DETAILED DESCRIPTION

[0027] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with embodiments of the present invention.

[0028] In order to fully understand the embodiments of the present invention, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art.

[0029] The utility model provides a modular container. The modular container is divided into two layers, an upper layer and an lower layer. The lower layer is a closed transport structure A, and the upper layer is an open transport structure B.

[0030] like Figure 1 As shown, the modular container according to the present invention includes a box body 1, corner posts 2 and folding door assemblies 3 arranged in pairs.

[0031] In the embodiment of the present invention, the box body 1 includes side walls 11, a top plate 12 and a bottom plate (not shown in the figure), and an end of the box body 1 has a through opening (not shown in the figure).

[0032] The corner posts 2 are located at the ends of the side walls 11 on both sides of the longitudinal direction C of the box body 1 . The top ends of the corner posts 2 have corner fittings 22 , and the bottom surfaces of the corner fittings 22 are higher than the top plate 12 of the box body 1 .

[0033] The paired folding door assemblies 3 are each adapted to fit within the corresponding openings. The folding door assemblies 3 include a first door panel 31 and a second door panel 32 pivotally connected to the first door panel 31. The first door panel 31 of each paired folding door assembly 3 is pivotally connected to the corresponding corner post 2. Specifically, compared to existing containers, the modular container of the present invention has a double-layer structure. Specifically, with the upper end surface of the container body 1 serving as the dividing surface, the overall structure of the container body 1 is a closed structure. The upper end surface of the container body 1 and the corner posts 2 together form an open transport structure B. The modular container of the present invention is primarily suitable for transporting automobiles. When the modular container returns after transporting automobiles, the container body 1 of the present invention can be used to transport goods requiring sealing, thereby improving the efficient use of the modular container and enabling diversified uses of the modular container.

[0034] In addition, the modular container in the present invention is additionally provided with a folding door assembly 3, which is adapted to the through opening. Since the folding door assembly 3 has a folding function during the process of opening and closing the door, the radius range of opening and closing the door is effectively reduced. In this way, position interference with the body of the car during the process of opening and closing the door can be effectively avoided.

[0035] It should be noted that the closed carrying structure A (i.e., the box body 1) at the lower end of the combined container in the present invention and the open carrying structure B at the upper end (i.e., composed of the corner columns 2 at the ends of the side walls 11 arranged on both sides of the longitudinal direction C of the box body 1 and the top plate 12 of the box body 1) can both be used to transport cars. At the same time, other vehicles can also be transported. In addition, the box body 1 in the combined container in the present invention can also transport other goods with sealing requirements. The box body 1 is equivalent to acting as a half-height box in a general container.

[0036] It should be noted that if Figure 1 As shown, when the folding door assemblies 3 arranged in pairs are in a closed state, the folding door assemblies 3 arranged in pairs are sealed to ensure that the interior of the box body 1 has good sealing performance.

[0037] It should also be noted that if Figure 1 、 Figure 3 and Figure 4 As shown, the first door panel 31 and the second door panel 32 are hingedly connected to each other, thereby enabling the first folding door assembly 3 to be folded and opened. Specifically, when the folding door assembly 3 needs to be opened, the second door panel 32 is pulled outward, so that the inner side surface of the second door panel 32 rotates and opens toward the inner side surface of the first door panel 31. Thereafter, the first door panel 31 and the second door panel 32 are pulled outward together, thereby enabling the first door panel 31 and the second door panel 32 to be fully opened.

[0038] It should be noted that the so-called “inner side surface of the first door panel 31 ” and “inner side surface of the second door panel 32 ” both refer to the surfaces of the first door panel 31 and the second door panel 32 facing the inner side of the box body 1 .

[0039] It should be noted that since the first door panel 31 and the second door panel 32 are hinged, during the door opening process, the second door panel 32 can be opened first, and then the first door panel 31 can be opened. Compared with opening a separate half door, this effectively reduces the opening and closing radius of the door panel during the opening process, thereby effectively avoiding position interference with the car to be loaded into the box 1 or scratching the car body.

[0040] It should also be noted that when the folding door assembly 3 provided at the openings at both ends of the box body 1 is in the open state, the rolling loading and unloading of the cars in a row can be realized, which effectively improves the efficiency of loading and unloading of the cars.

[0041] like Figure 3 and Figure 4 As shown, in some preferred embodiments of the present invention, the modular container further includes a sealing member 5 provided around the first door panel 31 and the second door panel 32. Specifically, by providing the sealing member 5 around the first door panel 31 and the second door panel 32, the sealing between the folding door assembly 3 and the opening can be effectively improved, and further, the sealing inside the container body 1 can be effectively ensured.

[0042] In some specific embodiments, the sealing component 5 can be a sealing strip or a sealing tape.

[0043] like Figure 1 As shown, in some preferred embodiments of the present invention, the corner posts 2 include support columns 21 disposed at the ends of the side walls 11 on both sides in the longitudinal direction of the container body 1, and the top corner fittings 22 are disposed on the upper end surfaces of the support columns 21. Specifically, by adding the top corner fittings 22 to the upper ends of the support columns 21, the integrity of the modular container can be ensured.

[0044] like Figure 2 and Figure 5 As shown, in some preferred embodiments of the present invention, the top corner fitting 22 includes a top corner fitting body 221, an upwardly opening through cavity 222 is configured within the top corner fitting body 221, and mounting holes 223 are configured in opposing relation on the side walls of the top corner fitting body 221. The mounting holes 223 are in communication with the through cavity 222. The through cavity 222 is adapted for inserting a connecting component, and the mounting holes 223 are adapted for inserting a bolt. By tightening the bolt, the connecting component can be locked or fixed, thereby preventing the connecting component from falling out of the through cavity 222.

[0045] Specifically, the entire connecting component can be a rigid connector similar to an "I" shape, and the upper end opening of the through cavity 222 can be a long strip through hole. In this way, after the "I" shaped rigid connector is inserted through the long strip through hole, the connecting end of the rigid connector is rotated until it intersects with the long strip through hole, and the rigid connector and the top corner piece 22 can be connected as a whole by being clamped.

[0046] like Figure 1 As shown, in some embodiments of the present invention, the modular container further includes connecting beams 6 symmetrically disposed above and on both sides of the container body 1 in the longitudinal direction C. The connecting beams 6 are disposed above the container body 1, and each end of the connecting beams 6 is integrally connected to the corresponding corner posts 2. Specifically, the connecting beams 6 are disposed parallel to the upper end surface of the container body 1. The provision of the connecting beams 6 not only strengthens the connection strength between each corner post 2 and the container body 1, but also serves to stop cars loaded onto the open transport structure B above the container body 1, preventing them from falling during transportation.

[0047] like Figure 1 As shown, in some preferred embodiments of the present invention, the modular container further includes reinforcing ribs 7 disposed between the connecting crossbeam 6 and the upper end surface of the container body 1. The reinforcing ribs 7 may be multiple and spaced apart along the longitudinal direction C of the container body 1. Specifically, the reinforcing ribs 7 may be arranged vertically or at an angle. The provision of the reinforcing ribs 7 further enhances the connection strength between the connecting crossbeam 6 and the container body 1, effectively improving the stability of the connection between the two.

[0048] It should be noted that the so-called "vertical" refers to Figure 2 The vertical state E shown; the so-called "inclined setting" means that when each reinforcing rib 7 is connected to the connecting beam 6, a first angle (not shown in the figure) is formed between the reinforcing rib 7 and the connecting beam 6, and the range of the first angle can be greater than 0 to less than 90°, preferably 30°, 45° or 60°.

[0049] like Figure 2 As shown, in some preferred embodiments of the present invention, the modular container further includes a folding corner post assembly 8 provided on the connecting beam 6 .

[0050] The folding corner post assembly 8 is adapted to rotate from a horizontal state D parallel to the connecting beam 6 to a vertical state E perpendicular to the connecting beam 6. When the folding corner post assembly 8 is in the vertical state E, a folding corner post 82 is provided at the top of the folding corner post assembly 8. The bottom surface of the folding corner post 82 is higher than the top plate 12 of the box body 1. Specifically, in the present invention, Figure 1 The modular container as a whole is equivalent to a transport unit. When the modular container needs to transport a car, the transport unit can be stacked in multiple layers in the longitudinal direction with the help of the folding corner column assembly 8, thereby improving the utilization rate of the site and achieving the purpose of increasing the car carrying capacity without increasing the horizontal occupied area.

[0051] Preferably, the arrangement of the folding corner post assembly 8 can achieve three-layer stacking of the modular container in the longitudinal direction.

[0052] It should be noted that, considering that the longitudinal height of the corner posts 2 at the ends of the side walls 11 on both sides of the longitudinal direction C of the box body 1 is lower than the longitudinal height of the entire vehicle body, in order to avoid positional interference between the vehicle and the box body 1 of the upper modular container, the folding corner post assembly 8 is added to the connecting crossbeam 6. When the upper open-end carrying structure B of the modular container needs to carry a car, the folding corner post assembly 8 is transformed from its original horizontal state to a vertical state, thereby effectively avoiding positional interference between the carried car and the box body 1 of the upper modular container.

[0053] Furthermore, the modular container of this invention features an upper, open transport structure B that allows for roll-on / roll-off loading and unloading of vehicles in a row. The lower, enclosed transport structure A is capable of carrying cargo requiring sealing for return trips. When loading cargo in the lower, enclosed transport structure A, vehicles can be driven directly into the container 1. When transporting cargo in the upper, open transport structure B, vehicles can be driven into the container 1 via a loading platform (not shown).

[0054] It should be noted that the so-called "carrying platform" can be a connecting plate that can realize the roll-on and roll-off of cars in a row. Figure 2As shown, in some embodiments of the utility model, the folding corner post assembly 8 includes a base corner post 80, a sliding structure 81 and a folding corner post 82 arranged on the connecting crossbeam 6, wherein the horizontal plane on which the upper end surface of the base corner post 80 lies is flush with the horizontal plane on which the upper end surface of the corner post 2 lies, the first end of the folding corner post 82 extends into the sliding structure 81 and is adapted to move along the sliding structure 81 toward the upper end of the base corner post 80, the second end of the folding corner post 82 is adapted to rotate from a horizontal state D arranged parallel to the connecting crossbeam 6 to a vertical state E perpendicular to the connecting crossbeam 6, and the lower end of the folding corner post 82 is integrally attached to the upper end surface of the base corner post 80, and an end corner piece 83 is installed at the second end of the folding corner post 82. Specifically, the sliding structure 81 includes a base plate 811 arranged on the connecting beam 6 and side plates 812 arranged relative to the base plate 811, wherein a screw 813 is constructed on each side plate 812, and the screws 813 on both sides are arranged relative to each other, wherein the overall structure of the screw 813 is an inverted "L-shape", that is, a shape similar to the number "7", and the first end of the folding corner column 82 extends into the space formed between the two side plates 812, and then passes through the side plate 812 on one side, the first end of the folding corner column 82 and the side plate 812 on the other side in sequence through the sliding groove 814, so that the folding corner column 82 can move along the screw 813 and rotate around the screw 813.

[0055] When the folding corner post assembly 8 is in operation, that is, when it needs to be transformed from the horizontal position D to the vertical position E, the folding corner post 82 is first pulled upward and moved upward along the long slot in the screw 813 on the side plate 812. When the folding corner post 82 has moved as a whole to the uppermost end of the long slot, the second end of the folding corner post 82 is further pushed upward, thereby transforming the folding corner post 82 from the original horizontal position D to the vertical position E. At this time, the lower end of the folding corner post 82 is integrally bonded to the upper end surface of the base corner post 80. When the folding corner post 82 is transformed into the vertical position E, the slide 814 is locked in the short horizontal slide. At this time, the nuts or washers provided on the protruding ends of the slide 814 on both sides are tightened to vertically secure the folding corner post 82.

[0056] It should be noted that the above-mentioned "end corner pieces 83" mainly serve to achieve the stacking and connection of multiple modular containers in the longitudinal direction when transporting automobiles.

[0057] It should also be noted that the structures of the end corner piece 83 and the base corner column 80 are the same as the structure of the "top corner piece 22" mentioned in the above embodiment. In order to avoid repetition, they are not described in detail here.

[0058] In addition, when the modular container of the present invention is used to transport goods other than automobiles, the modular container can be stacked in multiple layers in the longitudinal direction by using the basic corner columns 80 .

[0059] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in some preferred embodiments of the present invention, the modular container further comprises a mounting plate 9 attached to the upper end face of the box body 1, wherein a raised portion 91 is constructed in the middle region of the mounting plate 9 along its extension direction, and sunken horizontal structures 92 are constructed on both sides of the mounting plate 9 in the extension direction. Specifically, the mounting plate 9 is suitable for carrying and transporting automobiles, and the cross-sectional shape of the raised portion 91 is similar to a trapezoidal structure. Since the middle of the mounting plate 9 is a raised portion 91 and the two sides are sunken horizontal structures 92, when a car drives in, the chassis of the car will not interfere with the position of the raised portion 91. At the same time, when the wheels of the car fall onto the sunken horizontal structures 92 on both sides, the height of the entire car in the longitudinal direction will be effectively reduced, thereby achieving the purpose of rationally utilizing the longitudinal space. In addition, it can also effectively ensure that while achieving three-layer stacking in the longitudinal direction, the height limit of railway transportation will not be exceeded.

[0060] It should be noted that the extending direction of the mounting plate 9 is consistent with the extending direction of the length direction C of the box body 1 .

[0061] like Figure 1 and Figure 2 As shown, in some preferred embodiments of the present invention, a plurality of through holes 93 are spaced apart along the extension direction of the sunken horizontal structure 92. Specifically, by providing these through holes 93, when a car is loaded into the upper open transport structure B, a rope can be passed through the through holes 93 and wrapped around the rope multiple times to secure the car after loading it into the upper open transport structure B. This helps prevent the car from falling during rail transportation.

[0062] It is understandable that the diameter of the through hole 93 only needs to be sufficient for the rope to pass through.

[0063] In summary, the modular container of the present invention, compared to existing containers, is configured as a double-layer structure with upper and lower layers. Specifically, with the upper end surface of the container body 1 serving as the dividing surface, the overall structure of the container body 1 is a closed structure. The upper end surface of the container body 1 and the corner posts 2 together form an open transport structure B. The modular container of the present invention is primarily suitable for transporting automobiles. When the modular container needs to return after transporting automobiles, the container body 1 of the present invention can be used to transport goods requiring sealing, thereby improving the rational use efficiency of the modular container and enabling diversified uses of the modular container.

[0064] In addition, the modular container in the present invention is additionally provided with a folding door assembly 3, which is adapted to the through opening. Since the folding door assembly 3 has a folding function during the process of opening and closing the door, the radius range of opening and closing the door is effectively reduced. In this way, position interference with the body of the car during the process of opening and closing the door can be effectively avoided.

[0065] It should be noted that the closed carrying structure A (i.e., the box body 1) at the lower end of the combined container in the present invention and the open carrying structure B at the upper end (i.e., composed of the corner columns 2 at the ends of the side walls 11 arranged on both sides of the longitudinal direction C of the box body 1 and the top plate 12 of the box body 1) can both be used to transport cars. At the same time, other vehicles can also be transported. In addition, the box body 1 in the combined container in the present invention can also transport other goods with sealing requirements. The box body 1 is equivalent to acting as a half-height box in a general container.

[0066] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate component. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise stated.

[0067] The present invention has been described through the above embodiments, but it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Those skilled in the art will appreciate that many more variations and modifications may be made based on the teachings of the present invention, and all of these variations and modifications fall within the scope of protection claimed by the present invention.

Claims

1. A modular container, characterized in that: The modular container comprises: A box body, comprising side walls, a top plate, and a bottom plate, with a through opening at one end of the box body; Corner posts, the corner posts being located at the ends of the side walls on both sides in the length direction of the box body, the top ends of the corner posts being provided with top corner fittings, the bottom surfaces of the top corner fittings being higher than the top plate of the box body; The folding door assemblies are arranged in pairs, and the folding door assemblies are both adapted to the through openings on the corresponding sides. The folding door assemblies include a first door panel and a second door panel pivotally connected to the first door panel. The first door panel of each of the folding door assemblies arranged in pairs is pivotally connected to the corresponding corner column.

2. The modular container according to claim 1, characterized in that: The modular container further includes a sealing component arranged around the folding door assembly.

3. The modular container according to claim 1, characterized in that: The corner columns include support columns arranged on the ends of the side walls on both sides in the longitudinal direction of the box body, and the top corner pieces are arranged on the upper end surfaces of the support columns.

4. The modular container according to claim 1, characterized in that: The top corner piece includes a top corner piece body, a through cavity with an upward opening is constructed inside the top corner piece body, and mounting holes are constructed oppositely on the side walls of the top corner piece body, and the mounting holes are connected to the through cavity.

5. The modular container according to claim 1, characterized in that: The modular container further includes connecting beams symmetrically arranged above both sides of the container body in the longitudinal direction, and both ends of the connecting beams are respectively connected to the corresponding corner columns as a whole.

6. The modular container according to claim 5, characterized in that: The modular container further includes a reinforcing rib arranged between the connecting crossbeam and the upper end surface of the container body.

7. The modular container according to claim 5, characterized in that: The modular container further comprises a folding corner post assembly provided on the connecting beam; The folding corner post assembly is suitable for rotating from a horizontal state parallel to the connecting beam to a vertical state perpendicular to the connecting beam, wherein, when the folding corner post assembly is in the vertical state, a folding corner piece is provided at the top end of the folding corner post assembly, and the bottom surface of the folding corner piece is higher than the top plate of the box body.

8. The modular container according to claim 7, characterized in that: The folding corner post assembly includes a base corner post, a sliding structure and a folding corner post arranged on the connecting crossbeam, wherein the horizontal plane on which the upper end surface of the base corner post lies is flush with the horizontal plane on which the upper end surface of the corner post lies, the first end of the folding corner post extends into the sliding structure and is adapted to move along the sliding structure toward the upper end of the base corner post, the second end of the folding corner post is adapted to rotate from a horizontal state arranged parallel to the connecting crossbeam to a vertical state perpendicular to the connecting crossbeam, so that the lower end of the folding corner post is adhered to the upper end surface of the base corner post as a whole, and an end corner piece is installed at the second end of the folding corner post.

9. The modular container according to claim 1, characterized in that: The modular container further comprises a mounting plate attached to the upper end surface of the box body, wherein a protrusion is constructed in the middle area of ​​the mounting plate along its extension direction, and sunken horizontal structures are constructed on both sides of the extension direction of the mounting plate.

10. The modular container according to claim 9, characterized in that: A plurality of through holes are arranged at intervals in the extending direction of the sunken horizontal structure.

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