container

Abstract

The present invention provides a container, including a box body forming a receiving space, and a door body for opening and closing the receiving space, the box body including a bottom plate and a top plate, two side plates, and a front plate corresponding to the door body, the top plate at least including a first plate body and a second plate body with relatively fixed positions, the first plate body is arranged close to the front plate relative to the second plate body, and the elastic limit and / or possible stress of the first plate body along the thickness direction is greater than that of the second plate body. In the present invention, by arranging the first plate body and the second plate body with different elastic limits and / or possible stresses on the top plate, when the container is turned over 90° and placed vertically, the first plate body relatively close to the front plate can have a greater strength, thereby preventing the structure of the top plate from being deformed.

Description

Technical Field

[0001] The present invention relates to a container, in particular to a container which can be used for vertical loading. Background Art

[0002] At present, most containers used in transportation are standard containers. Standard containers are usually rectangular and include a box body with open ends and a door body for opening or closing the box body. The box body includes a bottom plate for carrying goods during transportation, a top plate corresponding to the bottom plate, a front plate connected to the rear end of the bottom plate and corresponding to the door body, and two side plates connected to both sides of the bottom plate and the top plate. Usually, during the loading process of this standard container, the bottom plate is placed on a horizontal plane, and the goods are loaded horizontally into the container using tools such as pallets. Nowadays, granular bulk cargoes are also beginning to be transported in standard containers. Bulk cargoes usually include grains, coal, granular ore, etc. However, if bulk cargoes are loaded into containers using tools such as pallets, the loading efficiency is low, and the space utilization rate in the container is also low.

[0003] Therefore, in order to improve the loading and unloading efficiency of bulk cargo in standard containers, the container can be turned over 90 degrees with the opening facing upwards for loading. For example, Chinese patent announcement No. CN205590006U discloses a container turning machine, which can rotate a container whose bottom plate is originally placed on a horizontal plane by 90 degrees, and the original front plate is rotated to a horizontal level, with the opening of the container facing upwards, so that the cargo can be easily filled downwards, thereby improving the loading efficiency.

[0004] However, during the transportation of standard containers, the bottom plate, side plates, front plate, and door body are all under the pressure of bearing cargo, so their strength is usually relatively high. The top plate does not need to bear any force, and only needs to be suitable for operators to walk on, so its strength is usually not strong enough to withstand the cargo load. However, if the cargo is to be loaded vertically, the top plate must also bear a certain cargo load, otherwise it is easy to cause deformation or damage to the top plate during the vertical loading process. And it is understandable that during the actual loading process, the part of the top plate closer to the front plate will bear greater pressure and will be more likely to deform or be damaged.

[0005] Therefore, a standard container must be designed to meet the force requirements for vertical loading. Summary of the invention

[0006] In order to solve the above problems, the present invention proposes a container, including a box body forming a receiving space, and a door body for opening and closing the receiving space, the box body including a bottom plate and a top plate, two side plates, and a front plate corresponding to the door body, the top plate includes at least a first plate body and a second plate body which are relatively fixed in position, the first plate body is arranged close to the front plate relative to the second plate body, and the elastic limit and / or applicable stress of the first plate body along the thickness direction are greater than those of the second plate body.

[0007] As a further improvement of the present invention, the first plate body and the second plate body extend in a wave shape along the length direction of the box body.

[0008] As a further improvement of the present invention, the thickness of the first plate body is greater than that of the second plate body.

[0009] As a further improvement of the present invention, the top plate has wave crests formed at intervals, and a wave trough is formed between two adjacent wave crests; the wave crests include a first wave crest located in the first plate body and a second wave crest located in the second plate body, and the wave troughs include a first wave trough located in the first plate body and a second wave trough located in the second plate body; the distance between the first wave crest and the first wave trough is greater than the distance between the second wave crest and the second wave trough.

[0010] As a further improvement of the present invention, the inner surfaces of the first wave trough portion and the second wave trough portion are on the same straight line.

[0011] As a further improvement of the present invention, the top plate has wave crests formed at intervals, and a wave trough is formed between two adjacent wave crests; the wave crests include a first wave crest located in the first plate body and a second wave crest located in the second plate body, and the wave troughs include a first wave trough located in the first plate body and a second wave trough located in the second plate body; the distance between two adjacent first wave crests is smaller than the distance between two adjacent second wave crests.

[0012] As a further improvement of the present invention, the container further comprises a reinforcement member, and the reinforcement member is attached to the inner surface of the first plate body.

[0013] As a further improvement of the present invention, the top plate extends in a wave shape from the door body toward the front plate, and the top plate has wave crests formed at intervals, and a wave trough is formed between two adjacent wave crests; the first plate body includes a first wave crest and a first wave trough; the reinforcement is attached to the inner surface of the first wave crest or the first wave trough.

[0014] As a further improvement of the present invention, the material yield strength of the first plate body is greater than that of the second plate body.

[0015] As a further improvement of the present invention, the number of the first plate body and the second plate body is at least one, and they are welded to each other.

[0016] Beneficial effects of the present invention: In the present invention, by arranging the first plate and the second plate with different elastic limits and / or applicable stresses on the top plate, when the container is turned over 90 degrees and placed vertically, the first plate relatively close to the front plate can have greater strength, thereby preventing the structure of the top plate from being deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the container of the present invention;

[0018] Figure 2 A top view of the container of the present invention;

[0019] Figure 3 for Figure 2 A partial cross-sectional schematic diagram of the first embodiment along line AB;

[0020] Figure 4 for Figure 2 A partial cross-sectional schematic diagram of the second embodiment along line AB;

[0021] Figure 5 for Figure 2 A partial cross-sectional schematic diagram of the third embodiment along line AB;

[0022] Figure 6 for Figure 2 A partial cross-sectional schematic diagram of the fourth embodiment along line AB;

[0023] Figure 7 for Figure 2 A partial cross-sectional schematic diagram of the fifth embodiment along line AB;

[0024] 100-container; 1-top plate; 11-first plate body; 111-first wave crest portion; 112-first wave trough portion; 12-second plate body; 121-second wave crest portion; 122-second wave trough portion; 20-door body; 2-front plate; 3-side plate; 4-reinforcement member; 41-first reinforcement member; 42-second reinforcement member. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] In addition, repeated reference numerals or symbols may be used in different embodiments. These repetitions are only for the purpose of simply and clearly describing the present invention, and do not represent any correlation between the different embodiments or structures discussed.

[0027] like Figures 1 to 6As shown, the present invention provides a container 100 in a rectangular parallelepiped shape, the container 100 is a standard container 100 with an end-opening door, the container 100 includes a box body forming a receiving space and a door body 20 for opening and closing the receiving space, the box body includes a bottom plate, a top plate 1, a door body 20 and a front plate 2 respectively set at both ends of the bottom plate in the length direction, and a pair of side plates 3 respectively set at both sides of the bottom plate in the width direction. An opening with an open end is formed on the container 100, and the door body 20 is opened and closed on the opening.

[0028] Specifically, Figure 1 to Figure 2 , the top plate 1 at least includes a first plate body 11 and a second plate body 12 which are relatively fixed in position, and the first plate body 11 is arranged close to the front plate 2 relative to the second plate body 12. In this specific embodiment, the first plate body 11 and the second plate body 12 only need to be relatively fixed in position, that is, the first plate body 11 and the second plate body 12 can be directly fixedly connected, or can be fixed to each other through other structures. For example, the top plate 1 can also include a third plate body, and the third plate body can be arranged on the side of the first plate body 11 away from the second plate body 12, or on the side of the second plate body 12 away from the first plate body 11, or between the first plate body 11 and the second plate body 12. In addition, the number of the first plate body 11, the second plate body 12 and / or the third plate body is at least one, and the two are fixed by welding.

[0029] Moreover, in this embodiment, the elastic limit and / or applicable stress of the first plate body 11 along the thickness direction is greater than that of the second plate body 12. Since the first plate body 11 is closer to the front plate 2 than the second plate body 12, the first plate body 11 has a larger elastic limit and / or applicable stress than the second plate body 12, and can withstand greater pressure.

[0030] Among them, on the one hand, the elastic limit is also called the elastic limit. When a material or structure is subjected to force, the stress and strain present a functional relationship. When the stress reaches a certain value, the stress is cancelled, and the material or structure will not restore itself to its original state. This stress value is called the elastic limit. Therefore, in this embodiment, since the top plate 1 is also placed vertically during the vertical loading of the container 100, the cargo in the receiving space forms a pressure from the inside to the outside on the top plate 1 that is approximately equal to the vertical pressure of the top plate 1. Therefore, when the first plate body 11 is subjected to a stress perpendicular to the first plate body 11 (i.e., the thickness direction) and the stress does not exceed the first elastic limit, the first plate body 11 is strained, the stress is cancelled, and the strain of the first plate body 11 is restored to its original state; when the second plate body 12 is subjected to a stress perpendicular to the second plate body 12 (i.e., the thickness direction) and the stress does not exceed the second elastic limit, the second plate body 12 is strained, the stress is cancelled, and the strain of the second plate body 12 is restored to its original state. The first elastic limit is greater than the second elastic limit, so the first plate body 11 can withstand a greater force relative to the second plate body 12 and return to its original state, thereby preventing the first plate body 11 from deforming.

[0031] Therefore, when subjected to exactly the same force, both the first plate 11 and the second plate 12 will be deformed. However, when the force is withdrawn, if the second plate 12 can still return to its original state, then the first plate 11 can definitely return to its original state as well; if the second plate 12 undergoes plastic deformation, then the first plate 11 may also return to its original state.

[0032] On the other hand, plates with the same structure but different materials may also have the same elastic limit, and, when subjected to the same stress, plates with the same structure but different materials may undergo exactly the same deformation. The allowable stress refers to the maximum stress value allowed to be borne by a part or component in a mechanical design or an engineering structure design. Therefore, the allowable stress of the first plate body 11 is greater than that of the second plate body 12, and thus, the stress that damages the first plate body 11 is greater than the force that damages the second plate body 12, and the force that the first plate body 11 can withstand is also greater than that of the second plate body 12. Therefore, since the first plate body 11 is closer to the front plate 2 relative to the second plate body 12, when the container 100 is turned over 90° and loaded vertically, the first plate body 11 is subjected to greater pressure when the cargo enters from top to bottom, and therefore the elastic limit and / or allowable stress of the first plate body 11 are also greater, thereby effectively improving the overall strength and stability of the top plate 1 and preventing the top plate 1 from deforming. Of course, if the top plate 1 also includes a third plate body, a fourth plate body, etc., the elastic limit and / or applicable stress of the top plate 1 along the thickness direction will gradually increase from the door body 20 toward the front plate 2. For example, if the top plate 1 also includes a third plate body, and the third plate body is located on the side of the first plate body 11 away from the second plate body 12, the elastic limit and / or applicable stress of the third plate body along the thickness direction should also be greater than the elastic limit and / or applicable stress of the first plate body 11. Therefore, in summary, the elastic limit and / or applicable stress of the top plate 1 along the thickness direction gradually increase from the door body 20 toward the front plate 2, which can make the top plate 1 better withstand the pressure during the vertical loading process, and there is no need to strengthen the elastic limit and / or applicable stress of the top plate 1 as a whole, saving costs.

[0033] As described above, the number of the first plate 11 and the second plate 12 is at least one. Accordingly, if the elastic limit and / or applicable stress of the first plate 11 is larger, the number or area of ​​the corresponding first plate 11 is smaller. Usually, the top plate 1 of the container 100 is relatively long, and is usually welded by five plates of the same shape and size. In this embodiment, the first plate 11 has two pieces, and the second plate 12 has three pieces. The elastic limit and / or applicable stress of a single plate is balanced, thereby reducing the manufacturing difficulty and improving the manufacturing efficiency.

[0034] Six specific embodiments are provided below, and for the convenience of illustration, the first plate body 11 and the second plate body 12 are directly fixedly connected, and the top plate 1 only includes the first plate body 11 and the second plate body 12. Of course, if the top plate 1 also includes a third plate body, etc., or the first plate body 11 and the second plate body 12 are fixedly connected to each other through a third plate body, etc., it is also included in the scope of the present invention.

[0035] Specifically, first, in order to improve the above elastic limit, a specific analysis is carried out from the structural aspect as follows.

[0036] The first plate body 11 and the second plate body 12 extend in a wave shape along the length direction of the box body, and the first plate body 11 and the second plate body 12 are formed by stamping.

[0037] If Figure 3 As shown, in the first embodiment of the present invention, the thickness of the first plate body 11 is greater than that of the second plate body 12. Generally, in the prior art, the thickness of the top plate 1 of the container 100 is 1.6mm to 2.0mm. In this embodiment, the thickness of the top plate 1 of the first plate body 11 is 2.3mm to 4.0mm, and the thickness of the second plate body 12 is 1.6mm to 2.0mm. The thicker the thickness of the top plate 1 of the container 100 at the first plate body 11, the larger the cross-sectional area of ​​the first plate body 11 per unit length, and the maximum elastic limit.

[0038] like Figure 4 As shown, in the second embodiment of the present invention, specifically, the top plate 1 has crests formed at intervals, and a trough is formed between two adjacent crests. The crest includes a first crest 111 located on the first plate body 11 and a second crest 121 located on the second plate body 12, and the trough includes a first trough 112 located on the first plate body 11 and a second trough 122 located on the second plate body 12.

[0039] Specifically, the distance between the first crest 111 and the first trough 112 is greater than the distance between the second crest 121 and the second trough 122. That is, in this embodiment, the maximum distance between the outer surface and the inner surface of the first plate 11 is changed by changing the distance between the crest and the trough.

[0040] In the prior art, the distance from the crest to the trough is usually 20 mm. In this embodiment, the distance from the first crest 111 to the first trough 112 is 21 mm to 36 mm, and the distance from the second crest 121 to the second trough 122 is 20 mm. The larger the distance from the crest to the trough, the larger the area of ​​the cross section of the first plate 11 per unit length, and the greater the elastic limit. In this specific embodiment, the first trough 112 and the second trough 122 are still on the same straight line, so that the heights of the first crest 111 and the second crest 121 are inconsistent. The first trough 112 and the second trough 122 are located on the same horizontal line, which can ensure the storage of items in the container.

[0041] Of course, on the basis of the first embodiment, the distance between the first crest portion 111 and the first trough portion 112 can be further increased, that is, the first plate body 11 can be thickened and the distance between the first crest portion 111 and the first trough portion 112 can be increased, thereby further increasing the cross-sectional area within the first plate body 11 per unit length and increasing the elastic limit.

[0042] like Figure 5 As shown, in the third embodiment of the present invention, the distance between two adjacent first wave crests 111 is smaller than the distance between two adjacent second wave crests 121. Similarly, the distance between two adjacent first wave valleys 112 is also smaller than the distance between two adjacent second wave valleys 122. In the prior art, the distance between two adjacent wave crests is 209 mm. In the present embodiment, the distance between two adjacent first wave crests 111 is 50 mm to 200 mm, and the distance between two adjacent second wave crests 121 is 209 mm. As a result, the waveform of the first plate body 11 of the top plate 1 is denser than that of the second plate body 12, which means that within a unit length, the cross-sectional area of ​​the first plate body 11 is larger and the elastic limit is also larger.

[0043] Of course, on the basis of the first embodiment, the distance between two adjacent first wave crests 111 can be further reduced, that is, the first plate body 11 is thickened and the wave distribution is made denser, so that the cross-sectional area of ​​the first plate body 11 per unit length can be further increased, and the elastic limit is also greater. Alternatively, on the basis of the second embodiment, the wave of the first plate body is deepened and the density of the wave distribution is increased, so the purpose of the present invention can also be achieved.

[0044] like Figure 6 and Figure 7 As shown, the container 100 also includes a reinforcement member 4, and the reinforcement member 4 is arranged on the inner side of the first plate body 11 of the top plate 1. The reinforcement member 4 can be a reinforcement beam, a reinforcement rib, a U-shaped member, etc., and is attached to the inner surface of the first plate body 11 of the top plate 1. If it is arranged on the outside of the container 100, it will be disadvantageous for the up and down stacking of multiple containers 100 and will easily cause collisions. Therefore, the reinforcement member 4 is arranged on the inner side of the first plate body 11 of the top plate 1, which correspondingly increases the strength of the top plate 1 on the first plate body 11, so that its elastic limit is correspondingly stronger. Specifically, as Figure 6 As shown, in the fourth embodiment of the present invention, the reinforcing member 4 includes a first reinforcing member 41, which is arranged on the inner side of the first wave crest portion 111 of the first plate body 11 of the top plate 1, and continues to protrude inwardly beyond the inner surface of the first wave valley portion 112. Figure 7As shown, in the fifth embodiment of the present invention, the reinforcement member further includes a second reinforcement member 42, which is disposed on the inner side of the first trough portion 112 of the first plate body 11 of the top plate 1, and can be interconnected with the top cross beam of the container. Of course, other reinforcement members can also be disposed on the inner surface of the second plate body 12, but the elastic limit of the reinforcement member 4 at the first plate body 11 must be greater than that of the reinforcement member at the second plate body 12.

[0045] Similarly, on the basis of the first to third embodiments, the above-mentioned reinforcement 4 can be added to the inner surface of the first plate body 11, so as to further improve the elastic limit of the first plate body 11, which will not be repeated here. Of course, from the material aspect, in the sixth embodiment of the present invention, in order to make the allowable stress of the first plate body 11 greater than that of the second plate body 12, the material yield strength of the first plate body 11 is greater than that of the second plate body 12. The yield strength of the material refers to the yield limit of the metal material when the yield phenomenon occurs, that is, the stress that resists slight plastic deformation. The action of an external force greater than the yield strength will cause the part to fail permanently and cannot be restored. For example, the yield limit of a low-carbon steel part is 207MPa. When an external force greater than this limit is applied, the part will produce permanent deformation. If it is less than this, the part will recover. In the prior art, the material of the top plate 1 is usually SPA-H steel, and the material yield strength is usually 355 MPa. In this embodiment, in order to enhance the material yield strength of the first plate body 11, the material of the first plate body 11 is BC550 steel or DOMEX 700W steel, and the material yield strength of the first plate body 11 can reach 450 to 700 MPa.

[0046] In summary, in the present invention, by arranging the first plate body 11 and the second plate body 12 with different elastic limits and / or applicable stresses on the top plate 1, when the container 100 is flipped 90° and placed vertically, the first plate body 11 relatively close to the front plate 2 can have a larger elastic limit and / or applicable stress, thereby preventing the structure of the top plate 1 from being deformed and improving the stability of the top plate 1.

[0047] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0048] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A container, which can be used for loading goods vertically after turning over 90 degrees, the container comprises a box body forming a receiving space, and a door body for opening and closing the receiving space, the box body comprises a bottom plate and a top plate, two side plates, and a front plate corresponding to the door body, the top plate comprises at least a first plate body and a second plate body which are relatively fixed in position, the first plate body is arranged close to the front plate relative to the second plate body, and is characterized in that: The elastic limit and / or applicable stress of the first plate body along the thickness direction is greater than that of the second plate body, and the elastic limit and / or applicable stress of the top plate along the thickness direction gradually increases from the door body toward the front plate.

2. The container according to claim 1, characterized in that: The first plate body and the second plate body extend in a wave shape along the length direction of the box body.

3. The container according to claim 2, characterized in that: The thickness of the first plate is greater than that of the second plate.

4. The container according to claim 2 or 3, characterized in that: The top plate has wave crests formed at intervals, and a wave trough is formed between two adjacent wave crests; the wave crests include a first wave crest located on the first plate body and a second wave crest located on the second plate body, and the wave troughs include a first wave trough located on the first plate body and a second wave trough located on the second plate body; the distance between the first wave crest and the first wave trough is greater than the distance between the second wave crest and the second wave trough.

5. The container according to claim 4, characterized in that: The inner surfaces of the first wave trough portion and the second wave trough portion are on the same straight line.

6. The container according to claim 2 or 3, characterized in that: The top plate has wave crests formed at intervals, and a wave trough is formed between two adjacent wave crests; the wave crests include a first wave crest located on the first plate body and a second wave crest located on the second plate body, and the wave troughs include a first wave trough located on the first plate body and a second wave trough located on the second plate body; the distance between two adjacent first wave crests is smaller than the distance between two adjacent second wave crests.

7. The container according to claim 2 or 3, characterized in that: The container further includes a reinforcement member, and the reinforcement member is attached to the inner surface of the first plate body.

8. The container according to claim 7, characterized in that: The top plate extends in a wave shape from the door body toward the front plate, and the top plate has wave crests formed at intervals, and a wave trough is formed between two adjacent wave crests; the first plate body includes a first wave crest and a first wave trough; the reinforcement is attached to the inner surface of the first wave crest or the first wave trough.

9. The container according to claim 1, characterized in that: The material yield strength of the first plate body is greater than that of the second plate body.

10. The container according to claim 1, characterized in that: The number of the first plate body and the second plate body is at least one, and they are welded to each other.

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