Underframe components and containers

Abstract

This utility model discloses a chassis assembly and a container. The chassis assembly is configured for use with a container. The chassis assembly includes opposing bottom side beams, opposing end beams, and reinforcing plates. The opposing bottom side beams all extend along a first direction, and the opposing end beams extend along a third direction, with the end beams and bottom side beams connected sequentially. The reinforcing plates are disposed on the inner wall surface of the bottom side beams, wherein the reinforcing plates at least partially cover the inner wall surface. The first direction and the third direction intersect. In this application, by having the reinforcing plates at least partially cover the inner wall surface, the stress on the bottom side beams can be reduced, thereby increasing the strength of the bottom side beams. Furthermore, compared to using bottom side beams with higher strength, it is also possible to significantly reduce the amount of material used for the bottom side beams, reduce the production cost of the chassis assembly, and effectively reduce the tare weight of the container, thereby reducing transportation costs and risks to a certain extent.

Description

Technical Field

[0001] This utility model relates to the technical field of containers, and more specifically to a chassis assembly and a container. Background Technology

[0002] With the development of container technology, the weight of containers has gradually decreased. However, energy storage containers, for example, typically need to support heavy equipment such as battery packs and precast concrete modules (PCS), requiring the bottom side beams of the container's frame assembly to withstand higher loads. Current technologies often employ higher-strength bottom side beams to improve the strength of the frame assembly, but this usually increases the container's weight. Therefore, how to improve the structural strength of the frame assembly while reducing the container's weight is a pressing technical problem that needs to be solved. Utility Model Content

[0003] The description of this utility model introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially solve the above problems, a first aspect of the present invention provides a chassis assembly configured for use in a container, the chassis assembly comprising:

[0005] The bottom side beams, which are set opposite each other, all extend along the first direction;

[0006] The oppositely arranged end beams all extend along a third direction, and the end beams and the bottom side beams are connected in sequence;

[0007] A reinforcing plate is provided on the inner wall surface of the bottom side beam;

[0008] The reinforcing plate at least partially covers the inner wall surface, and the first direction and the third direction intersect.

[0009] According to the underframe assembly of this utility model, firstly, the bottom side beams and end beams are connected sequentially to form the overall frame structure of the underframe assembly, thereby improving the overall deformation resistance of the underframe assembly. Secondly, by using reinforcing plates to at least partially cover the inner wall surface, the stress on the bottom side beams can be reduced, thereby increasing the strength of the bottom side beams. Furthermore, compared to using bottom side beams with higher strength, the amount of material used for the bottom side beams can be significantly reduced, thus reducing the production cost of the underframe assembly. At the same time, it can also effectively reduce the tare weight of the container, thereby reducing transportation costs and risks to a certain extent.

[0010] Optionally, the projected area of ​​the reinforcing plate on the inner wall surface of the bottom side beam is greater than or equal to 65% of the area of ​​the inner wall surface, and in the second direction, the height of the reinforcing plate does not exceed the height of the bottom side beam;

[0011] Wherein, the second direction is perpendicular to the first direction and the third direction.

[0012] Optionally, the bottom side beam is configured as a hollow square tube, and in the third direction, the thickness of the reinforcing plate is equal to the wall thickness of the hollow square tube.

[0013] Optionally, the reinforcing plate is provided with a plurality of plug weld holes spaced apart along the first direction, and / or the reinforcing plate is provided with a plurality of plug weld holes spaced apart along the second direction, so as to weld the reinforcing plate to the bottom side beam.

[0014] Optionally, in the first direction, the spacing between two adjacent plug weld holes is 300-500 mm;

[0015] And / or, in the second direction, the spacing between two adjacent plug weld holes is 50-80 mm.

[0016] Optionally, the diameter of the plug weld hole is 8-10 mm.

[0017] Optionally, the bottom side beam includes at least:

[0018] The first bottom side beam, and the end beams are respectively disposed at both ends of the first bottom side beam;

[0019] The second bottom side beam is connected to the first bottom side beam in the second direction. The reinforcing plate is disposed on the inner wall surface of the first bottom side beam and the second bottom side beam, and the lower end surface of the reinforcing plate is flush with the lower end surface of the first bottom side beam.

[0020] Optionally, in the third direction, the wall thickness of the first bottom side beam and the second bottom side beam is 4-6 mm.

[0021] Optionally, on a plane perpendicular to the bottom side beam, the cross-sectional area of ​​the first bottom side beam is greater than the cross-sectional area of ​​the second bottom side beam.

[0022] The second aspect of this utility model provides a container, the container including a frame assembly according to any one of the above technical solutions.

[0023] The container according to this utility model, since it includes the aforementioned underframe assembly, also has the beneficial effects of the aforementioned underframe assembly. Attached Figure Description

[0024] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention.

[0025] In the attached image:

[0026] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the base frame assembly of this application;

[0027] Figure 2 This is a schematic diagram of the overall structure of another embodiment of the base frame assembly of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 110: Bottom side beam

[0030] 111: First bottom side beam

[0031] 112: Second bottom side beam

[0032] 120: Reinforcing plate

[0033] 121: Plug weld hole

[0034] 130: Bottom crossbeam

[0035] 140: Corner fittings

[0036] 150: End beam Detailed Implementation

[0037] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0038] To fully understand this invention, a detailed description will be provided below. Obviously, the implementation of this invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this invention are described in detail below; however, other embodiments may also be possible besides these detailed descriptions.

[0039] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0040] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0041] It should be noted that the terms “up,” “down,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used in this article are for illustrative purposes only and are not intended to be restrictive.

[0042] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0043] like Figure 1 As shown, the first aspect of this utility model discloses a chassis assembly for a container. The chassis assembly includes opposing bottom side beams 110, opposing end beams 150, and a reinforcing plate 120. The opposing bottom side beams 110 all extend along a first direction, and the opposing end beams 150 extend along a third direction, and the end beams 150 and bottom side beams 110 are connected sequentially. The reinforcing plate 120 is disposed on the inner wall surface of the bottom side beams 110. The reinforcing plate 120 at least partially covers the inner wall surface. The first direction and the third direction intersect.

[0044] As can be seen from the above structure, firstly, the bottom side beam 110 and end beam 150 are connected sequentially in this application to form the overall frame structure of the underframe assembly, thereby improving the overall deformation resistance of the underframe assembly. Secondly, in this application, by having the reinforcing plate 120 at least partially cover the inner wall surface, the stress on the bottom side beam 110 can be reduced, thereby increasing the strength of the bottom side beam 110. Furthermore, compared to using a stronger bottom side beam 110, the material usage of the bottom side beam 110 can be significantly reduced, thus reducing the production cost of the underframe assembly. At the same time, the tare weight of the container can also be effectively reduced, thereby reducing transportation costs and risks to a certain extent.

[0045] Preferably, the first direction and the third direction are perpendicular, so that the bottom side beam 110 and the end beam 150 are connected in sequence to form a rectangular frame structure of the base frame assembly, which can effectively improve the deformation resistance of the base frame assembly, that is, improve the structural strength of the base frame assembly.

[0046] In the embodiments of this application, the projected area of ​​the reinforcing plate 120 on the inner wall surface of the bottom side beam 110 is greater than or equal to 65% of the inner wall surface area, and in the second direction, the height of the reinforcing plate 120 does not exceed the height of the bottom side beam 110. The second direction, the first direction, and the third direction are all perpendicular to each other. Since the strength provided by the reinforcing plate 120 is also smaller when its size is small, this invention ensures that the projected area of ​​the reinforcing plate 120 on the inner wall surface of the bottom side beam 110 is greater than or equal to 65% of the inner wall surface area, and that the height of the reinforcing plate 120 does not exceed the height of the bottom side beam 110. This results in a larger contact area between the reinforcing plate 120 and the inner wall surface of the bottom side beam 110, thereby further increasing the strength provided by the reinforcing plate 120 to the bottom side beam 110, and consequently reducing the stress and deformation of the base frame assembly.

[0047] Optionally, the projected area of ​​the reinforcing plate 120 on the inner wall surface of the bottom side beam 110 can be 65%, 68%, 72.5%, or 75% of the inner wall surface area, etc. There is no limitation here, and the specific selection can be made according to the structural components configured inside the container.

[0048] In the embodiments of this application, the bottom side beam 110 is configured as a hollow square tube, and in the third direction, the thickness of the reinforcing plate 120 is equal to the wall thickness of the hollow square tube. In this application, by configuring the bottom side beam 110 as a hollow square tube, weight can be effectively reduced compared to a solid structure. Since the thickness of the reinforcing plate 120 is equal to the wall thickness of the hollow square tube, when the underframe assembly is subjected to load, the force can be orderly transmitted from the bottom side beam 110 to the reinforcing plate 120, and then distributed to the remaining structural components of the underframe assembly. This effectively reduces stress concentration caused by thickness differences, which is beneficial to improving the overall deformation resistance and damage resistance of the underframe assembly, thereby improving the overall stability of the container structure.

[0049] In the embodiments of this application, such as Figure 1 and Figure 2 As shown, the reinforcing plate 120 is provided with a plurality of plug weld holes 121 spaced apart along a first direction, and / or, the reinforcing plate 120 is provided with a plurality of plug weld holes 121 spaced apart along a second direction, so as to weld the reinforcing plate 120 to the bottom side beam 110. In this application, by providing plug weld holes 121, the welding area between the bottom side beam 110 and the reinforcing plate 120 can be increased when the reinforcing plate 120 is welded to the bottom side beam 110, thereby effectively improving the connection strength between the reinforcing plate 120 and the bottom side beam 110. Of course, in order to improve the connection strength between the reinforcing plate 120 and the bottom side beam 110, the four sides of the reinforcing plate 120 can also be welded to the bottom side beam 110, or in some other embodiments, adhesive bonding, fastener connection, or other methods can be used to further reinforce the connection between the reinforcing plate 120 and the bottom side beam 110, which is not limited here.

[0050] Optionally, in the embodiments of this application, a plurality of plug welding holes 121 may be provided only in the first direction, or a plurality of plug welding holes 121 may be provided only in the second direction, or a plurality of plug welding holes 121 may be provided at intervals in both the first and second directions. No limitation is imposed here.

[0051] In the embodiments of this application, the distance between two adjacent plug weld holes 121 is 300-500 mm in the first direction, and / or, in the second direction, the distance between two adjacent plug weld holes 121 is 50-80 mm. When the distance between two adjacent plug weld holes 121 is too close, that is, less than 300 mm in the first direction and / or less than 50 mm in the second direction, the heat input of the adjacent plug weld holes 121 is concentrated during welding, which easily causes stress concentration, resulting in cracking of the reinforcing plate 120. In addition, the small distance between adjacent holes also easily leads to a small welding operation space, affecting the welding quality. When the distance between two adjacent plug weld holes 121 is too far, that is, greater than 500 mm in the first direction and / or less than 80 mm in the second direction, the distance between the plug weld holes 121 is too large, and the number of plug weld holes 121 is also reduced, which will affect the connection strength between the reinforcing plate 120 and the bottom side beam 110. Therefore, when the distance between two adjacent plug weld holes 121 is 300-500mm in the first direction and / or the distance between two adjacent plug weld holes 121 is 50-80mm in the second direction, not only is the structural strength of the reinforcing plate 120 high, but the welding operation space is also large, which can improve the welding quality and also improve the connection strength between the reinforcing plate 120 and the bottom side beam 110.

[0052] Optionally, in the first direction, the distance between the two plug weld holes 121 can be 300mm, 350mm, 380mm, 420mm, 450mm, 480mm, 492mm, 500mm, etc., which will not be elaborated here. In the second direction, the distance between the two plug weld holes 121 can be 50mm, 52mm, 55mm, 59mm, 62mm, 65mm, 67mm, 72mm, 76mm, 79mm, 80mm, etc., which will not be elaborated here.

[0053] Optionally, in the first direction, the distance between any two adjacent plug weld holes 121 may be equal or unequal; it is understood that in the second direction, the distance between any two adjacent plug weld holes 121 may also be equal or unequal, and there is no restriction here.

[0054] In the embodiments of this application, the diameter of the plug weld hole 121 is 8-10 mm. When the diameter of the plug weld hole 121 is less than 8 mm, the hole diameter is too small. On the one hand, this can easily lead to insufficient connection strength with the bottom side beam 110, affecting connection stability; on the other hand, the small hole diameter can also easily affect welding efficiency. Conversely, when the diameter of the plug weld hole 121 is greater than 10 mm, the excessive hole diameter will reduce the surface area of ​​the load-bearing section of the reinforcing plate 120, thereby affecting the structural strength of the reinforcing plate 120 itself, and consequently affecting the overall structural strength of the base frame assembly. Therefore, when the diameter of the plug weld hole 121 is 8-10 mm, the connection strength between the reinforcing plate 120 and the bottom side beam 110 can be improved, thereby improving connection stability and welding efficiency. Simultaneously, the structural strength of the reinforcing plate 120 can also be improved, thereby improving the overall structural strength of the base frame assembly.

[0055] Optionally, the diameter of the plug hole 121 can be 8mm, 8.2mm, 8.5mm, 8.7mm, 8.9mm, 9mm, 9.2mm, 9.5mm, 9.7mm, 9.9mm, 10mm, etc., which will not be elaborated here.

[0056] In the embodiments of this application, such as Figure 2 As shown, the bottom side beam 110 includes a first bottom side beam 111 and a second bottom side beam 112. End beams 150 are respectively disposed at both ends of the first bottom side beam 111; in a second direction, the first bottom side beam 111 and the second bottom side beam 112 are connected; a reinforcing plate 120 is disposed on the inner wall surface of the first bottom side beam 111 and the second bottom side beam 112, and the lower end surface of the reinforcing plate 120 is flush with the lower end surface of the first bottom side beam 111. Firstly, by connecting the first bottom side beam 111 and the second bottom side beam 112 in the second direction, the cross-sectional area of ​​the bottom side beam 110 can be increased, thereby improving the overall structural strength of the bottom side beam 110 and thus improving the overall structural strength of the chassis assembly; furthermore, the connection of the two bottom side beams 110 can also effectively reduce the stress on the chassis assembly, thereby reducing the deformation of the chassis assembly. Secondly, by setting the reinforcing plate 120 on the inner wall surface of the first bottom side beam 111 and the second bottom side beam 112, the structural strength of the base frame assembly can be further enhanced, and the connection strength between the first bottom side beam 111 and the second bottom side beam 112 can be strengthened, thereby improving the connection stability between the first bottom side beam 111 and the second bottom side beam 112.

[0057] When connecting the first bottom side beam 111 and the second bottom side beam 112, welding can be performed only in the non-concentrated load area. The concentrated load area can be connected to the inside of the two beams by a reinforcing plate 120. This arrangement not only meets the strength requirements of the base frame assembly but also avoids "excessive strength," thereby reducing material waste. In addition, it can shorten welding time and improve production efficiency.

[0058] In addition, the lower end face of the reinforcing plate 120 is flush with the lower end face of the first bottom side beam 111. This arrangement can effectively reduce the shear stress of the bottom side beam 110, thereby effectively improving the overall structural strength of the bottom side beam 110.

[0059] Optionally, in some embodiments, the bottom side beam 110 may be a single bottom side beam 110. In this case, by setting the reinforcing plate 120 on the inner wall of the bottom side beam 110, the structural strength of the underframe assembly can also be strengthened. At the same time, the self-weight of the underframe assembly can be further reduced, thereby reducing the self-weight of the container.

[0060] In the embodiments of this application, the wall thickness of the first bottom side beam 111 and the second bottom side beam 112 is 4-6 mm. When the wall thickness of the first bottom side beam 111 and the second bottom side beam 112 is less than 4 mm, the strength of the bottom side beam 110 is insufficient, making it prone to breakage and deformation. Conversely, when the wall thickness of the first bottom side beam 111 and the second bottom side beam 112 is greater than 6 mm, the material required for the bottom side beam 110 after assembly increases, and the structural weight also increases. Therefore, setting the thickness of the first bottom side beam 111 and the second bottom side beam 112 to 4-6 mm not only improves the structural strength of the bottom side beam 110 but also reduces the overall weight of the base frame assembly, thereby reducing transportation costs and risks.

[0061] The wall thickness of the first bottom side beam 111 and the second bottom side beam 112 can be 4mm, 4.2mm, 4.3mm, 4.6mm, 4.9mm, 5.0mm, 5.3mm, 5.6mm, 5.8mm, 5.9mm, 6mm, etc., which will not be elaborated here.

[0062] Preferably, the wall thickness of the first bottom side beam 111 is equal to the wall thickness of the second bottom side beam 112. Of course, in some other embodiments, the wall thickness of the first bottom side beam 111 may not be equal to the thickness of the second bottom side beam 112, as long as the wall thickness of both is between 4-6 mm.

[0063] In the embodiments of this application, the cross-sectional area of ​​the first bottom side beam 111 is larger than that of the second bottom side beam 112 on the plane perpendicular to the bottom side beam 110. With this arrangement, the first bottom side beam 111 can bear the main vertical load, thereby optimizing stress distribution and reducing the occurrence of overload. Furthermore, this arrangement effectively reduces the overall weight of the bottom side beam 110 and improves its structural strength, thus increasing the structural strength of the underframe assembly while reducing its weight, thereby improving transportation efficiency and reducing transportation costs.

[0064] This application conducted experimental verification for two scenarios involving the bottom side beam 110. Both verifications were conducted based on a total container weight of 40 tons. The specific experimental verifications are as follows:

[0065] Example 1: Based on a single bottom side beam 110, the verification results are as follows:

[0066]

[0067] Example 1 uses a bottom side beam 110 with a conventional wall thickness and is equipped with a reinforcing plate 120. Comparative Example 1 uses a bottom side beam 110 with a larger wall thickness.

[0068] A comparison of Example 1 and Comparative Example 1 shows that the stress and deformation experienced by the base frame assembly in Example 1 are similar to or the same as those experienced by the base frame assembly in Comparative Example 1, meaning that the strength of the base frame assembly in Example 1 is similar to that of the base frame assembly in Comparative Example 1. However, the technical solution of Example 1 can save at least 10% of the material and reduce the weight of the bottom side beam 110 by at least 10% compared to the technical solution of Comparative Example 1.

[0069] Example 2: Based on the bottom side beam 110 including the first bottom side beam 111 and the second bottom side beam 112, the verification results are as follows:

[0070]

[0071]

[0072] Both the bottom side beam 110 in Example 2 and Comparative Example 2 include a first bottom side beam 111 and a second bottom side beam 112, and the wall thickness is the same. The difference is that Example 2 is provided with a reinforcing plate 120, while Comparative Example 2 is not provided with a reinforcing plate 120.

[0073] As can be seen from the comparison between Example 2 and Comparative Example 2, when the bottom side beam 110 includes the first bottom side beam 111 and the second bottom side beam 112, the reinforcement plate 120 can effectively reduce the stress on the base frame assembly, reduce the deformation of the base frame assembly, thereby significantly increasing the strength of the base frame assembly, and as mentioned above, it can also reduce the welding difficulty.

[0074] like Figure 1 and Figure 2 As shown, the reinforcing plate 120 is disposed in the concentrated load area of ​​the bottom side beam 110. The two ends of the bottom side beam 110 are non-concentrated load areas, and the area between the non-concentrated load areas at both ends is the concentrated load area. The concentrated load area of ​​the bottom side beam 110 bears most of the load, so placing the reinforcing plate 120 in this area can save material while ensuring increased strength of the bottom side beam 110. It is understandable that the reinforcing plate 120 can also be placed along the entire length of the bottom side beam 110.

[0075] like Figure 1 and Figure 2 As shown, the two bottom side beams 110 of the underframe assembly have different structures. One of the two bottom side beams 110 is formed by a single hollow square tube, while the other is formed by two hollow square tubes, respectively forming a first bottom side beam 111 and a second bottom side beam 112. It is understandable that the two bottom side beams 110 of the underframe assembly can also have the same structure. For example, both bottom side beams 110 can be formed by a single hollow square tube, or both bottom side beams 110 can be formed by two hollow square tubes, respectively forming a first bottom side beam 111 and a second bottom side beam 112.

[0076] like Figure 1 and Figure 2 As shown, the underframe assembly also includes corner brackets 140 and bottom crossbeams 130. The bottom crossbeams 130 extend along a third direction. The ends of the bottom crossbeams 130 are connected to the bottom side beams 110 or the reinforcing plate 120. Multiple bottom crossbeams 130 are spaced apart along a first direction. This further increases the strength of the underframe assembly.

[0077] The second aspect of this utility model discloses a shipping container. The container includes the aforementioned chassis assembly. Specifically, since the container includes the chassis assembly described in the above embodiments, it also has the beneficial effects of the aforementioned chassis assembly.

[0078] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0079] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are only for illustrative purposes. This utility model is not limited to the above embodiments. Many variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A chassis assembly configured for use in a container, characterized in that, The base frame assembly includes: The bottom side beams, which are set opposite each other, all extend along the first direction; The oppositely arranged end beams all extend along a third direction, and the end beams and the bottom side beams are connected in sequence; A reinforcing plate is provided on the inner wall surface of the bottom side beam; The reinforcing plate at least partially covers the inner wall surface, and the first direction and the third direction intersect.

2. The base frame assembly according to claim 1, characterized in that, The projected area of ​​the reinforcing plate on the inner wall surface of the bottom side beam is greater than or equal to 65% of the area of ​​the inner wall surface, and in the second direction, the height of the reinforcing plate does not exceed the height of the bottom side beam. Wherein, the second direction is perpendicular to the first direction and the third direction.

3. The base frame assembly according to claim 2, characterized in that, The bottom side beam is configured as a hollow square tube, and in the third direction, the thickness of the reinforcing plate is equal to the wall thickness of the hollow square tube.

4. The base frame assembly according to claim 2, characterized in that, The reinforcing plate is provided with a plurality of plug welding holes spaced apart along the first direction, and / or the reinforcing plate is provided with a plurality of plug welding holes spaced apart along the second direction, so as to weld the reinforcing plate to the bottom side beam.

5. The base frame assembly according to claim 4, characterized in that, In the first direction, the spacing between two adjacent plug weld holes is 300-500 mm; And / or, in the second direction, the spacing between two adjacent plug weld holes is 50-80 mm.

6. The base frame assembly according to claim 4, characterized in that, The diameter of the plug weld hole is 8-10 mm.

7. The base frame assembly according to claim 3, characterized in that, The bottom side beam includes at least: The first bottom side beam, and the end beams are respectively disposed at both ends of the first bottom side beam; The second bottom side beam is connected to the first bottom side beam in the second direction. The reinforcing plate is disposed on the inner wall surface of the first bottom side beam and the second bottom side beam, and the lower end surface of the reinforcing plate is flush with the lower end surface of the first bottom side beam.

8. The base frame assembly according to claim 7, characterized in that, In the third direction, the wall thickness of the first bottom side beam and the second bottom side beam is 4-6 mm.

9. The base frame assembly according to claim 8, characterized in that, On a plane perpendicular to the bottom side beam, the cross-sectional area of ​​the first bottom side beam is greater than that of the second bottom side beam.

10. A container, characterized in that, Includes the chassis assembly as described in any one of claims 1-9.

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