Heavy corrugated carton

Abstract

The invention relates to a heavy corrugated carton, which belongs to the technical field of corrugated paper packaging and comprises a first carton body, a second carton body and a bearing carton body, the first carton body and the second carton body are crossed and coincide in midpoint, and the coincide surface of the first carton body and the second carton body is a bearing surface. The stress-concentrated bearing surfaces of the first box body and the second box body are used as loading surfaces of an object; the first box body, the second box body and the bearing surface form a loading space with an upper opening; the bearing box body is arranged in the loading space and covers the bearing surface and the first box body, the bearing box body is used for placing articles, and the bearing box body, the first box body and the bearing surface are used for jointly sharing the main weight of the articles, so that the weight of the heavy articles is uniformly dispersed into the whole carton through the first box body and the second box body, and the stress of a single part is reduced; therefore, the overall bearing capacity is improved, the balance between the light weight and the strength of the corrugated carton is achieved, and it is guaranteed that heavy objects are intact in the packaging and transporting process.

Description

Technical Field

[0001] The invention belongs to the technical field of corrugated paper packaging, and in particular relates to a heavy-duty corrugated paper box. Background Art

[0002] In the logistics, transportation and warehousing industries, packaging and protection of heavy items has always been an important and complex issue. Although traditional corrugated boxes perform well in terms of lightness and cost-effectiveness, their structural strength and stability are often insufficient when facing heavy items, which can easily cause damage to the items in the box during transportation. In addition, existing heavy packaging materials such as wooden boxes and metal boxes, although they have strong load-bearing capacity, are expensive, not environmentally friendly and difficult to recycle, which does not conform to the current development trend of green packaging.

[0003] The first method used was usually to use corrugated paper as packaging material to meet the requirements of green packaging. However, the strength of corrugated paper is limited. Especially when used in the packaging of heavy objects, there is a problem of balancing the lightness and strength of corrugated boxes. That is, when using existing corrugated packaging for heavy objects such as metals, if only lightness is considered and strength is ignored, the packaging box may be damaged during transportation, resulting in damage to the items.

[0004] However, the existing corrugated packaging paper has a simple structure and cannot fully utilize the packaging structure of the corrugated paper to achieve gravity sharing.

[0005] Therefore, there is a need for a heavy-duty corrugated box that achieves both lightness and balanced strength by improving the packaging structure. Summary of the invention

[0006] In order to solve the above problems existing in the prior art, the present invention provides a heavy-duty corrugated paper box, which solves the problem that the existing corrugated paper box has a simple structure and cannot meet the demand for heavy object packaging.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A heavy-duty corrugated paper box, comprising a first box body, a second box body and a load-bearing box body, wherein the first box body and the second box body intersect each other crosswise and their midpoints coincide with each other, the overlapping surface of the first box body and the second box body is a load-bearing surface, and the load-bearing surface of the first box body and the second box body where stress is concentrated is used as a loading surface for an object;

[0009] The first box body, the second box body and the bearing surface form a loading space with an upper opening; the load-bearing box body is arranged in the loading space and covers the bearing surface and the first box body, the load-bearing box body is used to place articles, and the load-bearing box body, the first box body and the bearing surface are used to jointly share the main weight of the articles.

[0010] Preferably, the first box body and the second box body are integrally formed to enhance the pulling force of the side surfaces formed by the first box body and the second box body on the bearing surface.

[0011] Preferably, the first box body and the load-bearing box body are integrally formed to distribute the weight of the items from the load-bearing box body to the first box body.

[0012] Preferably, the load-bearing box includes a left connecting box, a right connecting box, a bayonet box and a tongue box, the left connecting box is connected to one side of the first box, and the right connecting box is connected to the other side of the first box; the left connecting box is connected to the tongue box, and the right connecting box is connected to the bayonet box, the tongue box and the bayonet box are clamped on the bearing surface, and the left connecting box and the right connecting box are connected to form an item placement surface.

[0013] Preferably, an airbag bag is arranged between the bearing surface and the tongue box and the bayonet box, and the airbag bag is used to reduce the pressure of the object placement surface on the bearing surface; the airbag bag includes a plurality of first airbag bags, a plurality of second airbag bags and a plurality of ventilation channels, a plurality of the second airbag bags are placed on the bearing surface, a first airbag bag is arranged between any two second airbag bags, and the first airbag bag realizes gas exchange with the second airbag bag through the ventilation channel, so as to change the contact area between the second airbag bag and the bearing surface.

[0014] Preferably, the first airbag bag is located on top of the second airbag bag, and at least half of the volume of the first airbag bag is in contact with the second airbag bag.

[0015] Preferably, the airbag is filled with air, and the air filled in the airbag bag occupies 70%-85% of the total volume of the airbag bag.

[0016] Preferably, it also includes a support component, which is arranged between the first box body and the bearing surface, and the support components are abutted against the tongue box and the bayonet box, and the support components are used to form a pulling force on the left connecting box and the right connecting box to pull the item placement surface upward.

[0017] Preferably, the support assembly includes an upper support ring, a vertical support ring, an abutment rod and a transmission rod; the upper support ring is arranged at the upper part of the loading space and fits the first box body and the second box body, the upper part of the vertical support ring is arranged at the four corners of the upper support ring and extends to the lower weighing box body, the abutment rods are respectively arranged on the left connecting box and the right connecting box, and the two ends of the abutment rod are hinged to the two adjacent vertical support rings, and the two abutment rods are respectively used to abut with the tongue box and the bayonet box; the transmission rod is slidably connected to the vertical support ring and abuts with the abutment rod, and the top of the transmission rod is also hingedly provided with a hinged part, and the hinged part is also hinged to the upper support ring, which is used to transmit the abutment of the tongue box and the bayonet box to the top of the left connecting box and the right connecting box.

[0018] Preferably, sealing boxes are further provided at both ends of the second box body, and the sealing boxes are used to form a sealing layer on the top of the loading space.

[0019] The beneficial effects of the present invention are:

[0020] In the present application, the stress generated by the weight is first concentrated on the bearing surface, and then evenly dispersed to the entire carton through the structure of the first box body and the second box body, so that the carton can be more stable when bearing heavy objects, and the stress on a single part is reduced, thereby improving the overall bearing capacity;

[0021] In the entire loading space, there are both airbag components to share the pressure in the horizontal direction and support components to enhance the strength of the first box body and the second box body in the vertical direction, so that the corrugated box can adapt to the packaging of heavy items, achieving a balance between the lightness and strength of the corrugated box, and ensuring the integrity of heavy objects during packaging and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 A schematic cross-sectional view of a heavy-duty corrugated paper box provided in one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the unfolded structure of a heavy-duty corrugated paper box provided in one embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the installation structure of a support assembly provided in one embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of an airbag bag provided in one embodiment of the present invention;

[0027] Legend: 1. First box body; 2. Second box body; 21. Sealed box; 3. Load-bearing box; 31. Left connecting box; 32. Right connecting box; 33. Bayonet box; 34. Latch box; 4. Loading surface; 5. Airbag bag; 51. First airbag bag; 52. Second airbag bag; 53. Ventilation channel; 6. Support assembly; 61. Upper support ring; 62. Vertical support ring; 63. Abutment rod; 64. Transmission rod. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0029] like Figure 1-Figure 4 As shown, a heavy-duty corrugated paper box comprises a first box body 1, a second box body 2 and a load-bearing box body 3. The overlapped surface of the first box body 1 and the second box body 2 is a load-bearing surface, and the load-bearing surface of the first box body 1 and the second box body 2 where stress is concentrated is used as a loading surface 4 of an object. The first box body 1 and the second box body 2 are cross-intersected and overlapped at the midpoint, thereby forming a compact and reinforced loading surface 4. The loading surface 4 not only serves as a direct loading area for the object, but also generates a close tension relationship when loading heavy objects. When the box structure is subjected to the weight of the heavy object, the first box bodies 1 and the second box bodies 2 are mutually pulled and supported, thereby ensuring that the carton can maintain overall stability and structural integrity when loading heavy objects.

[0030] The first box body 1 and the second box body 2 are vertically arranged with the bearing surface to form a loading space with an upper opening with the bearing surface; the load-bearing box body 3 is arranged in the loading space and covers the bearing surface and the first box body 1, and the load-bearing box body 3 is used to place articles, and the load-bearing box body 3, the first box body 1 and the bearing surface are used to share the main weight of the articles, and the load-bearing box body 3 mainly bears the weight of the articles, while the first box body 1 and the bearing surface play the role of supporting and dispersing the weight. This modular combination method makes the carton more reasonable in structure, and can more effectively share and bear the weight, thereby reducing the force on a single component and improving the overall stability and durability;

[0031] In addition, when the loading surface 4 is subjected to the pressure of heavy objects, the stress will not be concentrated only on the loading surface 4, but can be dispersed to the side (i.e., the side walls of the first box body 1 and the second box body 2) through the loading surface 4. This dispersion mechanism effectively reduces the local stress of the loading surface 4 and improves the overall load-bearing capacity of the carton.

[0032] The first box body 1 and the second box body 2 intersect crosswise and their midpoints coincide, forming a reinforced bearing surface, which can effectively concentrate and disperse stress. When a heavy object is placed in the load-bearing box body 3, the stress generated by its weight is first concentrated on the bearing surface, and then evenly dispersed to the entire carton through the structure of the first box body 1 and the second box body 2, so that the carton can be more stable when bearing heavy objects, and the stress on a single part is reduced, thereby improving the overall bearing capacity;

[0033] In summary, the present application uses the overlapping surface of the first box body 1 and the second box body 2 as the loading surface 4, so that the carton can generate a close tensile relationship when loading heavy objects, and disperse the stress to the side through the loading surface 4, which significantly improves the carrying capacity of the carton, so that it can safely package and transport heavier items. In addition, it is made of recyclable materials such as corrugated paper and has excellent environmental performance. Compared with traditional packaging materials, corrugated paper is not only lighter and more durable, but also can be recycled or degraded. This helps to reduce the pollution of packaging waste to the environment and promote sustainable development.

[0034] In one embodiment, the first box body 1 and the second box body 2 are integrally formed to enhance the tension of the side formed by the first box body 1 and the second box body 2 on the load-bearing surface. When the first box body 1 and the second box body 2 are integrally formed, the connection between them becomes more firm and stable. This enhanced integrity makes the interaction between the various parts of the carton more coordinated when it bears heavy objects, thereby improving the overall load-bearing capacity of the carton. The integrally formed structure enables the first box body 1 and the second box body 2 to more effectively disperse the tension to the side when subjected to the pressure of heavy objects, which not only reduces the local stress on the loading surface 4, but also enhances the lateral support capacity of the carton, thereby ensuring the stability of the carton during transportation and handling; since the first box body 1 and the second box body 2 are integrally formed, the connection between them is not easy to loosen or deform. This design helps to reduce the risk of deformation of the carton when it bears heavy objects, thereby improving the durability and service life of the carton.

[0035] In one embodiment, the first box body 1 and the load-bearing box body 3 are integrally formed to disperse the weight of the items from the load-bearing box body 3 to the first box body 1. When the first box body 1 and the load-bearing box body 3 are integrally formed, the weight of the items can be directly dispersed from the load-bearing box body 3 to the first box body 1. This dispersion mechanism helps to reduce the local stress of the load-bearing box body 3, improve the carrying capacity of the carton, and ensure the stability of the items in the carton.

[0036] In one embodiment, the load-bearing box 3 includes a left connecting box 31, a right connecting box 32, a bayonet box 33 and a tongue box 34. The left connecting box 31 is connected to one side of the first box, and the right connecting box 32 is connected to the other side of the first box 1; the left connecting box 31 is connected to the tongue box 34, and the right connecting box 32 is connected to the bayonet box 33. The tongue box 34 and the bayonet box 33 are clamped on the bearing surface, and the left connecting box 31 and the right connecting box 32 are connected to form an article placement surface. The left connecting box 31 and the right connecting box 32 are respectively connected to the two sides of the first box 1. This design not only enhances the structural connection between the load-bearing box 3 and the first box 1, but also provides a stable support surface for the articles. The tongue box 34 and the bayonet box 33 are clamped with each other on the bearing surface. This design not only ensures the closedness of the internal space of the load-bearing box 3, but also enhances the bearing capacity of the load-bearing box 3 through a physical locking mechanism. At the same time, the clamping structure also helps prevent the items from shaking and shifting during transportation. When the left connecting box 31 and the right connecting box 32 form a stable structure through the connection of the tongue box 34 and the bayonet box 33, they together constitute a flat and solid item placement surface, which can withstand the weight of the items and distribute it to various parts of the load-bearing box 3.

[0037] In one embodiment, an airbag bag 5 is arranged between the bearing surface and the tongue box 34 and the bayonet box 33, and the airbag bag 5 is used to reduce the pressure of the object placement surface on the bearing surface; the airbag bag 5 includes a plurality of first airbag bags 51, a plurality of second airbag bags 52 and a plurality of ventilation channels 53, a plurality of second airbag bags 52 are placed on the bearing surface, a first airbag bag 51 is arranged between any two second airbag bags 52, and the first airbag bag 51 realizes gas exchange with the second airbag bag 52 through the ventilation channel 53, which is used to change the contact area between the second airbag bag 52 and the bearing surface. When it is necessary to adjust the pressure of the airbag bag 5 on the bearing surface, it can be done by controlling the gas flow in the ventilation channel 53. Changing the amount of gas in the first airbag bag 51 and the second airbag bag 52, the increase or decrease in the amount of gas will cause the airbag bag 5 to expand or contract, thereby changing their contact area with the load-bearing surface. When an item is placed on the load-bearing box 3, its weight will generate pressure on the airbag bag 5, squeezing the gas in the first airbag bag 51 to the second airbag bag 52, causing it to expand and push the second airbag bag 52 to expand downward, thereby increasing the contact area between the second airbag bag 52 and the load-bearing surface. The increase in contact area helps to disperse pressure and reduce the pressure per unit area. As the contact area of ​​the second airbag bag 52 increases, the overall pressure distribution of the airbag bag 5 on the load-bearing surface becomes more uniform. This uniform pressure distribution helps to reduce local stress concentration on the load-bearing surface and improve the carrying capacity and stability of the carton.

[0038] In one embodiment, the first airbag bag 51 is located above the second airbag bag 52, and at least half of the volume of the first airbag bag 51 is in contact with the second airbag bag. The first airbag transfers the weight of the article to the second airbag bag. Before the heavy object is loaded, the first airbag bag 51 is located above the second airbag bag 52, and at least half of its volume is in close contact with the second airbag bag 52. This layout ensures that the first airbag bag 51 can respond quickly and effectively transfer and disperse pressure when loading heavy objects. When the carton starts to load heavy objects, the weight of the articles first acts on the first airbag bag 51. Since there is a large contact area between the first airbag bag 51 and the second airbag bag 52, gravity can be evenly and effectively transferred from the first airbag bag 51 to the second airbag bag 52; when loading items of different weights, the airbag bag 5 in the carton will form a dynamic balance system and can automatically adjust the expansion degree and support force of the airbag bag 5 according to the weight of the items, thereby ensuring that the carton can always remain stable and not easily deformed; specifically, when the weight is heavier, the first airbag bag 51 will expand more to provide more support; and when the weight is lighter, the first airbag bag 51 will maintain a smaller expansion degree to avoid excessive support. Through the expansion of the first airbag bag 51 and the dispersed pressure mechanism of the second airbag bag 52, the carton can better adapt to items of different weights. This adaptive adjustment function helps to reduce the local stress concentration of the load-bearing surface and improve the overall stability and service life of the carton. The adaptive adjustment function enables the carton to better adapt to items of different weights, thereby improving its carrying capacity. Even in the face of heavier items, the carton can remain stable and not easily deformed.

[0039] In one embodiment, the airbag is filled with air, and the air filled in the airbag bag 5 occupies 70% to 85% of the total volume of the airbag bag 5. The selection of the air filling ratio is carefully calculated to achieve the best performance of the airbag bag 5. The filling ratio of 70% to 85% not only ensures that the airbag bag 5 has a certain rigidity and support force, but also maintains sufficient flexibility and adaptability. When the carton is loaded with articles, the air in the airbag bag 5 is compressed, thereby providing the necessary support force. At the same time, due to the moderate filling ratio, the airbag bag 5 can maintain a certain elasticity when compressed, play a buffering role, and reduce the impact force of the articles on the carton; specifically, when the airbag bag 5 is filled to 70% to 85% of the total volume, the air occupies most of the space of the airbag bag 5, forming a relatively stable support structure. This support structure can provide the necessary support force for the loaded articles and prevent the articles from being damaged due to shaking during transportation. At the same time, since the airbag bag 5 is not completely filled, a certain space is left, which enables the airbag bag 5 to show a certain elasticity when subjected to external impact. When an object or external force acts on the airbag bag 5 , the air will be compressed and redistributed inside the airbag bag 5 , thereby absorbing and dispersing the impact force and playing a cushioning role.

[0040] In one embodiment, a support assembly 6 is further included. The support assembly 6 is arranged between the first box body 1 and the bearing surface. The support assembly 6 is in contact with the tongue box 34 and the bayonet box 33. The support assembly 6 is used to form a pulling force on the left connection box 31 and the right connection box 32 to pull the item placement surface upward.

[0041] In one embodiment, the support assembly 6 includes an upper support ring 61, a vertical support ring 62, an abutment rod 63 and a transmission rod 64; the upper support ring 61 is arranged at the upper part of the loading space and fits the first box body 1 and the second box body 2, the upper part of the vertical support ring 62 is arranged at the four corners of the upper support ring 61 and extends to the lower weighing box, the abutment rod 63 is respectively arranged on the left connecting box 31 and the right connecting box 32, and the two ends of the abutment rod 63 are hinged to the two adjacent vertical support rings 62, and the two abutment rods 63 are respectively used to abut with the tongue box 34 and the bayonet box 33; the transmission rod 64 is slidably connected to the vertical support ring 62 and abuts against the abutment rod 63, and the top of the transmission rod 64 is also hingedly provided with a hinged part, and the hinged part is also hinged to the upper support ring 61, for transferring the abutment of the tongue box 34 and the bayonet box 33 to the top of the left connecting box 31 and the right connecting box 32; when the heavy object is placed on the load-bearing surface of the carton When the carton is lifted up, its gravity will cause the bottom of the carton to be subjected to downward pressure, and this pressure will first be transmitted to the abutment rod 63, and then, this force will be transmitted to the transmission rod 64 through the hinged abutment rod 63. The transmission rod 64 is slidably connected to the vertical support ring 62 and abuts against the abutment rod 63. When the abutment rod 63 is moved by the gravity, the transmission rod 64 will slide along the vertical support ring 62 and be connected to the upper support ring 61 through the hinged part at its top, forming a lever effect. This lever effect will further convert the gravity into an upward pulling force, thereby propping up the left connecting box 31 and the right connecting box 32. Through the combined action of the above-mentioned mechanical structures, the side walls of the carton (especially the left connecting box 31 and the right connecting box 32) are effectively supported and strengthened, which makes it possible for the carton to withstand heavier items without being easily deformed or damaged even if thinner corrugated paper materials are used.

[0042] In one embodiment, sealing boxes 21 are further provided at both ends of the second box body 2. The sealing boxes 21 are used to form a sealing layer on the top of the loading space. The sealing boxes 21 are installed at both ends of the second box body 2, usually located at the top edge of the loading space, and are fixed to the second box body 2 by appropriate connection methods to ensure that they will not fall off or shift during loading and transportation. When the second box body 2 is combined with the first box body 1, the sealing box 21 will fit tightly with the corresponding structures of the other parts. This fit forms a continuous, seamless sealing layer that covers the top of the loading space.

[0043] Working principle:

[0044] That is, when an item is placed on the item placement surface, the item placement surface is acted upon by the downward gravity of the item, and at this time, the upper parts of the first box body 1 and the second box body 2 tend to approach each other. At this time, the pressure on the bearing surface extends from the weighing box body to the second box body 2, achieving the first step of stress dispersion. At the same time, since the weighing box body, the first box body 1, and the second box body 2 are all integrally formed, uniform force dispersion and mutual restraint can be achieved, thereby avoiding excessive stress concentration on the bearing surface.

[0045] At the same time, when there are items placed in the loading space, the surface where the items are placed is pressed downwardly on the first airbag, and the gas in the first airbag is squeezed into the second airbag. At the same time, since the contact area of ​​the first airbag is smaller than the contact area of ​​the second airbag, and the force-bearing area of ​​the second airbag and the load-bearing surface increases when the items are loaded, the pressure of the items on the loading surface 4 is reduced.

[0046] In addition, a support assembly 6 is provided in the loading space to resist the tendency of the first box body 1 to move toward the middle due to the action of the articles. That is, when the pressure on the surface where the articles are placed increases, it will act on the abutment rod 63, thereby causing the abutment rod 63 to rotate and abut the transmission rod 64 upward. When the transmission rod 64 abuts upward, it drives the hinge part to rotate counterclockwise and abut the weighing box, thereby achieving the effect of the weighing box resisting the gravity of the object, so that the entire loading space has both the airbag part to share the pressure in the horizontal direction and the support assembly 6 to increase or decrease the strength of the first box body 1 and the second box body 2 in the vertical direction, so that the corrugated cardboard box can adapt to the packaging of heavy articles, achieving a balance between the lightweight and strength of the corrugated cardboard box, and ensuring the integrity of the heavy objects during packaging and transportation.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A heavy-duty corrugated paper box, characterized in that: It comprises a first box, a second box and a load-bearing box, the first box and the second box intersect each other crosswise and their midpoints coincide, the overlapping surface of the first box and the second box is the load-bearing surface, and the load-bearing surface of the first box and the second box where stress is concentrated is used as the loading surface of the object; The first box body, the second box body and the bearing surface form a loading space with an upper opening; the load-bearing box body is arranged in the loading space and covers the bearing surface and the first box body, the load-bearing box body is used to place articles, and the load-bearing box body, the first box body and the bearing surface are used to jointly share the main weight of the articles.

2. A heavy-duty corrugated paper box according to claim 1, characterized in that: The first box body and the second box body are integrally formed to enhance the pulling force of the side surface formed by the first box body and the second box body on the bearing surface.

3. A heavy-duty corrugated paper box according to claim 1, characterized in that: The first box body and the load-bearing box body are integrally formed, and are used to distribute the weight of the items from the load-bearing box body to the first box body.

4. A heavy-duty corrugated paper box according to claim 1, characterized in that: The load-bearing box includes a left connecting box, a right connecting box, a bayonet box and a tongue box. The left connecting box is connected to one side of the first box, and the right connecting box is connected to the other side of the first box; the left connecting box is connected to the tongue box, and the right connecting box is connected to the bayonet box. The tongue box and the bayonet box are clamped on the bearing surface, and the left connecting box and the right connecting box are connected to form an item placement surface.

5. A heavy-duty corrugated paper box according to claim 4, characterized in that: An airbag bag is arranged between the bearing surface and the tongue box and the bayonet box, and the airbag bag is used to reduce the pressure of the object placement surface on the bearing surface; the airbag bag includes a plurality of first airbag bags, a plurality of second airbag bags and a plurality of ventilation channels, a plurality of the second airbag bags are placed on the bearing surface, a first airbag bag is arranged between any two second airbag bags, and the first airbag bag realizes gas exchange with the second airbag bag through the ventilation channel, so as to change the contact area between the second airbag bag and the bearing surface.

6. A heavy-duty corrugated paper box according to claim 5, characterized in that: The first airbag bag is located on the upper part of the second airbag bag, and at least half of the volume of the first airbag bag is in contact with the second airbag bag.

7. A heavy-duty corrugated paper box according to claim 6, characterized in that: The airbag bag is filled with air, and the air filled in the airbag bag occupies 70%-85% of the total volume of the airbag bag.

8. A heavy-duty corrugated paper box according to claim 4, characterized in that: It also includes a support component, which is arranged between the first box body and the bearing surface, and the support components are abutted against the tongue box and the bayonet box. The support component is used to form a pulling force on the left connection box and the right connection box to pull the item placement surface upward.

9. A heavy-duty corrugated paper box according to claim 8, characterized in that: The support assembly includes an upper support ring, a vertical support ring, an abutment rod and a transmission rod; the upper support ring is arranged at the upper part of the loading space and fits the first box body and the second box body, the upper part of the vertical support ring is arranged at the four corners of the upper support ring and extends to the lower load-bearing box body, the abutment rods are respectively arranged on the left connecting box and the right connecting box, and the two ends of the abutment rod are hinged to the two adjacent vertical support rings, and the two abutment rods are respectively used to abut with the tongue box and the bayonet box; the transmission rod is slidably connected to the vertical support ring and abuts against the abutment rod, and the top of the transmission rod is also hingedly provided with a hinged part, and the hinged part is also hinged to the upper support ring, for transmitting the abutment of the tongue box and the bayonet box to the top of the left connecting box and the right connecting box.

10. A heavy-duty corrugated paper box according to claim 1, characterized in that: Sealing boxes are also provided at both ends of the second box body, and the sealing boxes are used to form a sealing layer on the top of the loading space.

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