Floor, floor structure and container and method of processing thereof

Abstract

The application provides a bottom plate, a box bottom structure, a container and a processing method thereof. The bottom plate comprises a bottom plate body and a film coating layer. The bottom plate body is provided with a mortise, which is recessed upward from the bottom surface of the bottom plate body and located at the end of the bottom plate body for cooperation with a chassis. The film coating layer is at least bonded to the bottom surface of the bottom plate body, the surface of the mortise and the side surface of the bottom plate body to waterproof the bottom plate body. The bottom plate provided by the application has the film coating layer, so that the bottom plate of the container has the waterproof characteristic, thereby increasing the service life of the bottom plate of the container. The use of a large amount of asphalt paint, varnish or other sealing paint for coating treatment of the bottom plate is avoided, thereby reducing the emission of VOC, improving the production environment and reducing the harm to the occupational health of employees.

Description

Technical Field

[0001] This invention relates to the field of container technology, and more specifically to a container floor, a container floor structure having the floor, a container having the floor structure, and a method for processing the container. Background Technology

[0002] Traditional shipping containers have a bottom structure consisting of a frame and a floor, as well as lower end beams and corner brackets forming the front and rear ends. The floor can be mounted to the frame to support the cargo inside the container. Typically, for example, for a 40-foot container, the frame includes bottom side beams, bottom crossbeams, wide bottom crossbeams, short bottom crossbeams, short wide bottom beams, gooseneck channels, angle irons, and center beams. For a 20-foot container, the frame includes bottom side beams, bottom crossbeams, wide bottom crossbeams, forklift channels, and center beams.

[0003] To ensure the bottom structure is waterproof, it is typically necessary to coat the surfaces of the base frame, the bottom surface of the base plate, as well as the surfaces of the lower end beams and corner pieces with asphalt paint. The resulting asphalt paint layer covers the surfaces of these components. The application methods for asphalt paint generally include:

[0004] 1) Assemble the above-mentioned base frame with the front, rear, side and top panels of the container to form a container.

[0005] 2) Apply asphalt paint pre-coating to the upper surface of the lower flange of the underframe and lower end beam from inside the container, as well as the surface of the adjacent web of the lower flange of the bottom crossbeam, the upper surface of the lower flange of the lower end beam (rear sill) and the surface of the adjacent web of the lower end beam, and the upper surface of the angle steel of the lower end beam (front end) by means such as spraying or brushing.

[0006] 3) Install the base plate on the base frame.

[0007] 4) Apply asphalt paint to the remaining parts of the underframe and lower end beams located below the bottom plate, the bottom surface and inner holes of the bottom corner fittings, and the bottom surface of the bottom plate, so that the formed asphalt paint layer covers the bottom structure of the container. For example, spray or brush asphalt paint on the parts of the underframe located below the bottom plate, the nail heads passing through the bottom crossbeams, the lower end beams, and the bottom corner fittings located below the bottom plate without any blind spots.

[0008] 5) Dry the asphalt paint.

[0009] The main problems with the above construction method are:

[0010] 1) Both water-based and oil-based asphalt paints contain a certain amount of VOCs (volatile organic compounds). Using the above method requires a large amount of asphalt paint for coating containers, thus generating significant VOC emissions during container production and impacting the environment. Container manufacturers also need to invest heavily to meet VOC emission standards.

[0011] 2) Asphalt paint poses serious hazards to the production environment and employee occupational health. Due to the physical properties of asphalt paint, it cannot cure after application and remains in a semi-dry state. This not only creates a poor working environment but also causes asphalt paint to drip along the coating before drying, further impacting the surrounding production environment. Furthermore, cleaning asphalt paint is time-consuming, labor-intensive, and difficult to completely remove, significantly hindering clean production and 5S management at the production site.

[0012] 3) Due to the difficulty in drying and curing, the asphalt paint is difficult to cure completely. As a result, during the weather tightness test, uncured asphalt paint will continuously enter the spray water system of this station and be sprayed onto the container surface again, thus affecting the coating quality of the container.

[0013] 4) The paint mist generated during the asphalt paint application process also poses certain hazards to the occupational health of workers.

[0014] In addition, the existing base plates usually require the application of sealing paint, such as varnish, on their side surfaces for waterproofing, which inevitably leads to a significant amount of VOC emissions during the production process, impacting the environment and posing certain hazards to the occupational health of operators.

[0015] Therefore, there is a need for a container floor, a container floor structure having the floor, a container having the floor structure, and a method for processing the container, in order to at least partially solve the problems existing in the prior art. Summary of the Invention

[0016] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention 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.

[0017] To at least partially solve the above problems, according to one aspect of the invention, a bottom plate for connecting to the underframe of the container is provided, the bottom plate comprising a bottom plate body and a coating layer.

[0018] The base plate body is provided with a tenon, which is recessed upward from the bottom surface of the base plate body and located at the end of the base plate body for mating with the base frame.

[0019] The coating layer is bonded to at least the bottom surface of the base plate body, the surface of the tenon, and the side surface of the base plate body to provide waterproof protection for the base plate body.

[0020] According to this solution, the coating layer can cover the bottom surface of the base plate, the surface of the tenon joint, and the side surface of the base plate body, thus giving the container base plate waterproof properties and increasing its service life. The coating layer avoids the need for extensive use of asphalt paint, varnish, or other sealing paints to coat the base plate, thereby reducing VOC emissions, improving the production environment, and minimizing occupational health hazards for employees.

[0021] Preferably, the side surface of the base plate body extends downward from the top surface of the base plate body, and the tenon includes a first surface connected to the bottom surface of the base plate body and extending upward, and a second surface connected to the side surface of the base plate body and extending inward, the first surface being connected to the side surface via the second surface. Thus, the tenon is located at the bottom corner of the base plate body, and the surface of the tenon consists of at least two surfaces.

[0022] Preferably, the base plate comprises at least two base plate bodies, and the opposing side surfaces of adjacent base plate bodies are planar. Thus, the coating layer on the opposing side surfaces of adjacent base plate bodies is a planar protective layer, facilitating a tighter fit between adjacent base plate bodies.

[0023] Preferably, the base plate body has a chamfer at the tenon joint, and the film layer is adhered to the chamfered surface. This prevents the film substrate from being punctured by the right-angled end of the base plate body when it is laid.

[0024] Preferably, the coating layer is bonded to the top surface of the base plate body. This provides waterproofing and / or abrasion resistance protection to the top surface.

[0025] According to another aspect of the present invention, a container bottom structure is provided, the container bottom structure including a base frame and a bottom plate as described in any of the above-described technical solutions, the bottom plate being mounted on the base frame.

[0026] Preferably, the bottom structure of the box is provided with an asphalt paint layer or not provided with an asphalt paint layer.

[0027] Preferably, the bottom structure of the box is provided with an asphalt paint layer in all or in the portion below the bottom plate.

[0028] Preferably, the base frame includes a mating component, the tenon overlapping the mating component to install the base plate onto the base frame, the mating component including at least one of a bottom side beam, a center beam extending along the centerline of the base frame's length direction, and an angle steel connecting the gooseneck groove and the bottom crossbeam of the base frame.

[0029] According to another aspect of the present invention, a container is provided, the container including the container bottom structure described in any of the above-described technical solutions.

[0030] According to another aspect of the present invention, a method for processing a container is provided, the method comprising the following steps:

[0031] Base plate pretreatment steps: A tenon is cut into the base plate body, recessed upwards from the bottom surface; and

[0032] Base plate film application steps: The film substrate is adhered to the bottom surface of the base plate body, the surface of the tenon, and the side surface of the base plate body to form a waterproof coating layer, which covers the bottom surface of the base plate body, the surface of the tenon, and the side surface of the base plate body.

[0033] According to this solution, a base plate with a coated layer can be manufactured, and this base plate has waterproof properties. Furthermore, tenons are first made into the base plate, and then the coated layer is glued to the base plate body. The surface of the tenons can be covered by the coated layer, thus avoiding the need to waterproof the surface of the tenons after they are made. This reduces the number of processing steps in the base plate production and improves the production efficiency of containers.

[0034] Preferably, in the base plate film application step, the entire film substrate is adhered to the bottom surface of the base plate body, the surface of the tenon, and the side surface of the base plate body. Thus, the film substrate can be adhered to the base plate body in one step, making the process simple and easy to operate.

[0035] Preferably, in the base plate film application step, another whole sheet of the film substrate is adhered to the top surface of the base plate body to cover the top surface. This forms a second coating layer covering the top surface of the base plate body, providing waterproofing and / or abrasion resistance protection to the top surface.

[0036] Preferably, in the base plate pretreatment step, a chamfer is also formed on the base plate body at the tenon; in the base plate film application step, the film substrate is adhered to the chamfered surface to cover the chamfered surface. This prevents the film substrate from being punctured by the right-angled end of the base plate body when it is laid.

[0037] Preferably, the processing method further includes a base plate installation step following the base plate film application step. In the base plate installation step, at least two base plate bodies are spliced ​​together and installed onto the container's underframe. Thus, the base plate and the waterproof layer (film layer) form a unified whole. If the base plate is damaged, a new base plate with a film layer can be promptly replaced. This not only makes base plate repair more convenient, faster, and pollution-free, but also saves on repair costs.

[0038] Preferably, the processing method further includes a container painting step prior to the base plate installation step, in which the container is electrophoretically coated with electrophoretic paint. This forms an electrophoretic paint layer to protect the container.

[0039] Preferably, in the container coating step, the container that has already been electrophoretically coated is then powder coated. This forms a powder coating to protect the container.

[0040] Preferably, in the container painting step, the bottom structure of the container is coated with asphalt paint. This improves the waterproof properties of the bottom structure.

[0041] Preferably, in the container painting step, the bottom structure of the container is not coated with asphalt paint. This eliminates the asphalt paint coating process and improves container production efficiency.

[0042] Preferably, after the base plate installation step, the portion of the box bottom structure located below the base plate is coated with asphalt paint. This improves the waterproof properties of the box bottom structure, reduces the amount of asphalt paint used, and improves the construction site environment. Attached Figure Description

[0043] The following figures are included as part of this invention for understanding the invention. The figures illustrate embodiments of the invention and their descriptions, serving to explain the apparatus and principles of the invention. In the figures,

[0044] Figure 1 A cross-sectional schematic diagram of a container according to a preferred embodiment of the present invention;

[0045] Figure 2 for Figure 1 A cross-sectional schematic diagram of the base frame is shown in the image;

[0046] Figure 3 for Figure 1 A cross-sectional schematic diagram of a preferred embodiment of the base plate is shown in the figure;

[0047] Figure 4 for Figure 1A cross-sectional schematic diagram of another preferred embodiment of the base plate is shown in the figure;

[0048] Figure 5 for Figure 1 The diagram shows a schematic of the container's bottom structure.

[0049] Figure 6 for Figure 5 The schematic diagram of the cross-section cut by line AA shown in the figure; and

[0050] Figure 7 for Figure 5 The diagram shows a cross-section cut by line BB. Detailed Implementation

[0051] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the 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 obscuring the invention.

[0052] To fully understand the present invention, detailed structures will be set forth in the following description in order to illustrate the invention. Obviously, the implementation of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below; however, in addition to these detailed descriptions, the present invention may have other embodiments and should not be construed as being limited to the embodiments presented herein.

[0053] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the invention. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated feature, integral, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms “upper,” “lower,” “front,” “rear,” “left,” “right,” and similar expressions used in this invention are for illustrative purposes only and are not intended to be limiting.

[0054] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, 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."

[0055] The following description will focus on specific embodiments of the present invention with reference to the accompanying drawings, which illustrate representative embodiments of the invention and are not intended to limit the scope of the invention.

[0056] Containers typically have a 100mm bottom structure. For example... Figure 1 , Figure 2 and Figure 5 As shown, the container bottom structure 100 includes a base frame 110 and a bottom plate 120, as well as corner members 102 and lower end beams 103 for forming the front end (not shown) and rear end (top corner member 101 and bottom corner member 102 are shown). The base frame 110, together with the corner members 102 and lower end beams 103, forms a support portion of the container bottom structure 100. This support portion supports the entire container. The bottom plate 120 can be mounted on and cover the base frame 110, thereby supporting the cargo inside the container.

[0057] Figure 2 and Figure 5 The structure of the bottom structure 100 of a 40-foot container is shown. The two ends of the lower end beam 103 are connected to the bottom corner brackets 102, and the underframe 110 is connected to the front and rear bottom corner brackets 102. The underframe 110 includes bottom side beams 111, bottom crossbeams 112, wide bottom crossbeams 113, short bottom crossbeams 114, short wide bottom beams 115, gooseneck grooves 116, angle steel 117, and center beams 118. The floor plate 120 can be mounted to the bottom crossbeams 112, wide bottom crossbeams 113, short bottom crossbeams 114, short wide bottom beams 115, angle steel 117, and center beams 118 using fasteners such as self-tapping screws 119. It should be noted that the wide bottom crossbeams 113, short bottom crossbeams 114, and short wide bottom beams 115 can also be understood as bottom crossbeams of different dimensions within the underframe 110.

[0058] Specifically, bottom side beams 111 are disposed on both sides of the underframe 110 along its width. The bottom crossbeam 112 and the wide bottom crossbeam 113 are connected at both ends to the bottom side beams 111 on both sides, and extend along the width of the underframe 110. Short bottom crossbeams 114 and short wide bottom beams 115 are disposed on both sides of the gooseneck groove 116, and extend along the width of the underframe 110. The gooseneck groove 116 is located at the front end of the underframe 110 and can mate with the gooseneck of a handling vehicle to facilitate container handling. An angle steel 117 extends along the length of the underframe 110, with one side wall connected to the short bottom crossbeam 114 and / or the short wide bottom beam 115, and the other side wall connected to the gooseneck groove 116. The center beam 118 is configured to extend approximately along the centerline of the underframe 110 along its length.

[0059] In an embodiment not shown, the underframe 110 includes bottom side beams 111, bottom crossbeams 112, wide bottom crossbeams 113, fork slots, and center beams 118. For example, the underframe 110 for a 20-foot container. Except for the fork slots, the remaining components of the underframe 110 are arranged substantially the same as those in the underframe 110 for a 40-foot container. The fork slots extend along the width of the underframe 110 and penetrate through it. The fork slots are designed to engage with the forks of a forklift to facilitate container handling.

[0060] To ensure the container's bottom structure 100 is waterproof, the bottom plate 120 within the bottom structure 100 has a membrane layer 122. This membrane layer 122 enables the bottom plate 120 to have waterproof properties. Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the aforementioned base plate 120 includes a base plate body 121 and a coating layer 122. The coating layer 122 is at least adhered to the base plate body 121 and can cover the bottom surface F1 and side surface F2 of the base plate body 121. The coating layer 122 can block water or moisture entering from the bottom of the container from the base plate body 121, thereby increasing the service life of the base plate 120. Furthermore, in this embodiment, the bottom surface F1 and side surface F2 of the base plate body 121 can be waterproofed simultaneously, improving production efficiency.

[0061] Because the coating layer 122 is waterproof, it is unnecessary to apply asphalt paint to the bottom surface F1 of the base plate body 121, and it is also unnecessary to apply varnish or other sealing paint to the side surface F2 of the base plate body 121. Therefore, compared to traditional container production, this avoids the extensive use of asphalt paint, varnish, or other sealing paints, effectively reducing VOC emissions during container production and improving the production environment. Furthermore, it better protects the occupational health of employees.

[0062] Figure 3 One embodiment of the coating layer 122 is shown. For example... Figure 3 As shown, the base plate body 121 is provided with a tenon 123 for engaging with the base frame 110. The tenon 123 is recessed upward from the bottom surface F1 of the base plate body 121 and is located at the end of the base plate body 121. A first coating layer 122a is bonded to the bottom surface F1, the surface of the tenon 123, and the side surface F2 of the base plate body 121 to cover the bottom surface F1, the side surface F2, and the surface of the tenon 123 of the base plate body 121. In this embodiment, the bottom surface F1, the surface of the tenon 123, and the side surface F2 of the base plate body 121 can be waterproofed simultaneously.

[0063] It should be noted that "upward recess" refers to the tenon 123 being recessed from the bottom surface F1 to the top surface F3 along the thickness direction of the base plate 120 when the base plate body 121 is in the installed state. It can be understood that the "surface of the tenon 123" is formed as part of the bottom surface F1 and the side surface F2 of the base plate body 121.

[0064] This embodiment requires first creating a tenon 123 in the base plate 120, and then adhering the film substrate forming the coating layer 122 to the base plate body 121. This avoids the need to first waterproof the base plate 120, then create the tenon 123, and then waterproof the surface of the tenon 123 again, for example, by applying asphalt paint to the tenon 123. This reduces the number of processing steps in the production of the base plate 120 and improves the production efficiency of the container.

[0065] Specifically, the side surface F2 of the base plate body 121 extends downward from the top surface F3 of the base plate body 121. Figure 3 The diagram shows that the side surface F2 of the base plate body 121 is a downwardly extending plane. In an embodiment not shown, the side surface F2 can be multiple surfaces with a bent cross-sectional shape.

[0066] The tenon 123 includes a first surface that is connected to the bottom surface F1 of the base plate body 121 and extends upward, and a second surface that is connected to the side surface F2 of the base plate body 121 and extends inward, with the first surface connected to the side surface F2 via the second surface. Figure 3 The diagram shows a tenon 123 comprising a first tenon 123a and a second tenon 123b. The first surface F11 of the first tenon 123a and the first surface F21 of the second tenon 123b are upwardly extending bevels (surfaces with inner chamfer 126). The angles between the first surfaces F11 and F21 and the bottom surface F1 are obtuse angles. The second surface F12 of the first tenon 123a is an inwardly extending bevel (surfaces with outer chamfer 125). The angle between the second surface F12 and the side surface F2 is obtuse. The first surface F11 of the first tenon 123a is connected to the side surface F2 of the first tenon 123a via the upper surface F13 and the second surface F12. The second surface F22 of the second tenon 123b is an inwardly extending plane (the upper surface F23 of the second tenon 123b). The first surface F21 of the second tenon 123b is connected to the side surface F2 of the second tenon 123b via the second surface F22.

[0067] Figure 4 Another embodiment of the coating layer 122 is shown. For example... Figure 4 As shown, the base plate 120 includes not only a first coating layer 122a for covering the bottom surface F1 and side surfaces F2, but also a second coating layer 122b for covering the top surface F3 of the base plate body 121. The arrangement of the first coating layer 122a is consistent with... Figure 3 The embodiments shown are largely the same and are simplified here. The second coating layer 122b is bonded to the top surface F3 of the base plate body 121 and can abut against the first coating layer 122a. The first coating layer 122a and the second coating layer 122b can be made of the same or different film substrates. Optionally, the first coating layer 122a can be made of a flexible film substrate, so that it can be easily covered on the above-mentioned multiple surfaces. The second coating layer 122b can be made of a wear-resistant film substrate, so that the base plate 120 has a wear-resistant effect.

[0068] It should be noted that the coating layer 122 is a continuous and uninterrupted protective layer that can cover the surface to be protected. Although the figure shows one coating layer 122, and the coating layer 122 is directly bonded to the surface of the base plate body 121, two or more coating layers 122 can be provided if needed and / or desired, and other protective layers can be provided between the coating layer 122 and the surface of the base plate body 121, and other protective layers can also be provided on the outside of the coating layer 122.

[0069] It is understood that "coverage" means that the coating layer 122 can cover approximately all of the surface. For example, the first coating layer 122a covers approximately all of the bottom surface F1 and side surface F2 of the base plate body 121. Optionally, the thickness of the coating layer 122 is preferably 0.05 to 0.3 mm. More preferably, it is 0.1 to 0.2 mm.

[0070] Specifically, the tenon 123 is located at at least one end of the base plate body 121 along the width direction of the base frame 110, and can overlap with the mating parts in the base frame 110. The mating parts are at least one of the center beam 118, angle steel 117, and bottom side beam 111.

[0071] Preferably, return to reference Figure 1 The base plate body 121 includes wide base plate bodies 127 disposed on both sides of the central beam 118. Figure 3 ) and the narrow bottom plate body 128 disposed on both sides of the gooseneck groove 116. Figure 3 As shown, the wide base plate body 127 is provided with a first tenon 123a and a second tenon 123b along the width direction of the base frame 110. The first tenon 123a can overlap with the bent portion of the bottom side beam 111. The second tenon 123b can overlap with the middle beam 118. A first coating layer 122a can cover the surfaces of the first tenon 123a and the second tenon 123b. Figure 1As shown, the narrow base plate body 128 is provided with a third tenon 123c and a fourth tenon 123d along the width direction of the base frame 110. The third tenon 123c can overlap with the angle steel 117. The fourth tenon 123d can overlap with the bent part of the bottom side beam 111. The first coating layer 122a can cover the surfaces of the third tenon 123c and the fourth tenon 123d.

[0072] Furthermore, the base plate body 121 has a chamfer 124 at the tenon 123, and the film layer 122 is bonded to the surface of the chamfer 124. It is understood that the "surface of the chamfer 124" is formed as part of the surface of the tenon 123. In this embodiment, the chamfer 124 can be formed on the base plate 120 at the same time as the tenon 123 is formed, and then the film substrate forming the film layer 122 is bonded to the base plate body 121. In this way, the surfaces of the tenon 123 and the chamfer 124 of the base plate 120 can simultaneously provide waterproofing, reducing the number of processing steps in the production of the base plate 120 and improving the production efficiency of the container. The chamfer 124 prevents the film substrate from being punctured by the right-angled end of the base plate body 121 when it is laid. It also meets the requirements of the production process and facilitates easier integration with the base frame 110.

[0073] Specifically, such as Figure 3 As shown, the first tenon 123a of the wide base plate body 127 has an inner chamfer 126 at its connection with the bottom surface F1, and the first tenon 123a has an outer chamfer 125 at its connection with the side surface F2. The second tenon 123b of the wide base plate body 127 also has an inner chamfer 126 at its connection with the bottom surface F1. Figure 1 As shown, the third tenon 123c and the fourth tenon 123d of the narrow base plate body 128 are both provided with an inner chamfer 126 at the connection with the bottom surface F1, and the third tenon 123c and the fourth tenon 123d are both provided with an outer chamfer 125 at the connection with the side surface F2.

[0074] like Figure 5 As shown, the base plate 120 includes at least two base plate bodies 121. The at least two base plate bodies 121 can be joined together to cover the base frame 110. The opposite side surfaces F2 of each adjacent base plate body 121 are planar, and the coating layer 122 at the opposite side surfaces F2 is a planar protective layer, which facilitates a tighter fit between the adjacent base plate bodies 121.

[0075] Specifically, the floor 120 of the 40-foot container shown in the figure includes 12 floor bodies 121. The wide floor bodies 127 are located on both sides of the center beam 118, and the narrow floor bodies 128 are located on both sides of the gooseneck groove 116.

[0076] Taking the wide base plate body 127 as an example, such as Figure 5 and Figure 6As shown, a first wide base plate body 127a and a second wide base plate body 127b are arranged on both sides of a wide base beam 113 along the length of the base frame 110. The first end 131 of the first wide base plate body 127a is mounted to the wide base beam 113 via self-tapping screws 119. A first side coating layer 133, forming a planar protective layer, is provided on the side surface F2 of the first end 131. The second wide base plate body 127b has a first adjacent end 141 adjacent to the first end 131. The first adjacent end 141 is mounted to the wide base beam 113 via self-tapping screws 119. The first adjacent end 141 is provided with a first adjacent side coating layer 142, forming a planar protective layer. The first adjacent side coating layer 142 of the second wide base plate body 127b abuts against the first side coating layer 133 of the first wide base plate body 127a.

[0077] like Figure 5 and Figure 7 As shown, a first wide base plate body 127a and a third wide base plate body 127c are arranged on both sides of the center beam 118 along the width direction of the base frame 110. The second end 132 of the first wide base plate body 127a is mounted to the bottom crossbeam 112 by a self-tapping screw 119. A portion of the center beam 118 is accommodated in the second tenon 123b of the second end 132. A second side coating layer 134, forming a planar protective layer, is provided on the side surface F2 of the second end 132. The third wide base plate body 127c has a second adjacent end 151 adjacent to the second end 132. The second adjacent end 151 is mounted to the bottom crossbeam 112 by a self-tapping screw 119. Another portion of the center beam 118 is accommodated in the second tenon 123b of the second adjacent end 151. A second adjacent side coating layer 152, forming a planar protective layer, is provided on the side surface F2 of the second adjacent end 151. The second adjacent side coating layer 152 of the third wide base plate body 127c abuts against the second side coating layer 134 of the first wide base plate body 127a.

[0078] As described above, the bottom plate 120 in the container bottom structure 100 is waterproof due to the presence of a coating layer 122. The underframe 110, corner brackets 102, and lower end beam 103 in the container bottom structure 100 also typically require waterproofing. In this embodiment, the container is coated with an electrophoretic paint layer and / or other waterproof coatings before the bottom plate 120 is installed. The electrophoretic paint layer can be formed using a waterproof electrophoretic paint. In other words, the underframe 110, corner brackets 102, and lower end beam 103 are coated with a waterproof electrophoretic paint layer and / or other coatings. This eliminates the need for an asphalt paint layer in the container bottom structure 100, reducing the amount of asphalt paint used and simplifying container processing. Furthermore, it avoids the problem of difficult cleaning due to asphalt paint dripping, and minimizes or completely prevents asphalt paint from entering the spraying system during subsequent container weatherproofing tests, effectively solving the coating quality problem caused by re-coating of asphalt paint.

[0079] Furthermore, to improve the waterproof performance of the box bottom structure 100, an asphalt paint layer can be applied to the outside of the electrophoretic paint layer of the box bottom structure 100. The asphalt paint layer can be formed by at least one of the following coating methods: spraying, brushing, and rolling. One embodiment is to apply an asphalt paint layer to the entire box bottom structure 100 before the base plate 120 is installed onto the base frame 110. Another embodiment is to apply an asphalt paint layer to the portion of the box bottom structure 100 located below the base plate 120 after the base plate 120 is installed onto the base frame 110. This reduces the amount of asphalt paint used and improves the environment at the construction site. Specifically, the asphalt paint application process for components such as the base frame 110, bottom corner pieces 102, and lower end beam 103 can be carried out simultaneously to improve the asphalt paint application efficiency. It should be noted that the formed asphalt paint layer is a continuous, uninterrupted coating that can substantially completely cover the surface to be coated.

[0080] This embodiment also provides a method for processing containers, which includes the following steps:

[0081] Pre-treatment steps for the base plate: A tenon 123 is made on the base plate body 121, recessed upward from the bottom surface F1.

[0082] Base plate film application steps: The film substrate is adhered to the bottom surface F1, the surface of the tenon 123 and the side surface F2 of the base plate body 121 to form a waterproof coating layer 122.

[0083] By using the above steps, a base plate 120 with a coating layer 122 can be manufactured so that the base plate 120 has waterproof properties. The coating layer 122 can cover the bottom surface F1, the surface of the tenon 123, and the side surface F2 of the base plate body 121.

[0084] In this embodiment, a tenon 123 is first made in the base plate 120, and then a coating layer 122 is attached to the base plate body 121. The surface of the tenon 123 can be covered by the coating layer 122. In contrast, conventional base plates typically undergo waterproofing treatment first, and then a tenon is made to meet installation requirements. The surface of the tenon is then waterproofed again, for example, by applying asphalt paint. Compared to conventional base plate processing methods, this embodiment avoids the need to waterproof the surface of the tenon 123 after making it in the base plate 120. This reduces the number of processing steps in the production of the base plate 120 and improves the production efficiency of the container.

[0085] It is understood that "membrane substrate" refers to the material used to make the coating layer 122. The membrane substrate can be made from a flat, flexible substrate body, such as cloth or paper.

[0086] Specifically, in one embodiment, a whole sheet of the first film substrate is adhered to the bottom surface F1, the surface of the tenon 123, and the side surface F2 of the base plate body 121 to form a first coating layer 122a. Compared with coating methods such as spraying asphalt paint, the film substrate of this embodiment can be adhered to the base plate body 121 in one go, and the processing is simple, easy to operate, and pollution-free. Furthermore, the formed coating layer 122 is a continuous, uninterrupted, and uniformly thick protective layer.

[0087] In another embodiment, a whole sheet of the second film substrate is then adhered to the top surface F3 of the base plate body 121 to cover the top surface F3. This forms a second coating layer 122b covering the top surface F3 of the base plate body 121, providing waterproof protection for the top surface F3. Thus, a base plate 120 having a first coating layer 122a and a second coating layer 122b is manufactured. The first film substrate and the second film substrate can be the same or different.

[0088] In the base plate pretreatment step, a chamfer 124 is also formed at the tenon 123 on the base plate body 121. Therefore, in the base plate film application step, the film substrate is adhered to the surface of the chamfer 124. Thus, the film layer 122 can cover the surface of the chamfer 124.

[0089] The processing method also includes a floor panel installation step following the floor panel film application step. In the floor panel installation step, at least two floor panel bodies 121 are spliced ​​together and installed onto the container's underframe 110. Before installing the floor panel 120, the underframe 110 needs to be assembled with the container's front and rear ends, side panels 202, top panel 201, and top and side beams 203 to form a container. Then, the floor panel 120, already covered with the film layer 122, is installed onto the underframe 110. This eliminates the need for further asphalt paint protection on the bottom surface F1 of the floor panel 120.

[0090] Compared to the protection method using an asphalt paint layer, the processing method of this embodiment can effectively solve the quality problems caused by poor asphalt paint coating in the bottom structure 100 of traditional containers. For example, a gap exists between the bottom plate 120 and the bottom crossbeam 112, causing the asphalt paint layer to not completely cover the exposed surface.

[0091] Furthermore, in this embodiment, the base plate 120 and the waterproof layer (coating layer 122) form an integral whole. If the base plate 120 is damaged, a new base plate 120 with the coating layer 122 can be replaced in a timely manner. This not only makes the maintenance process of the base plate 120 more convenient and efficient, but also saves maintenance costs.

[0092] The processing method also includes a container painting step prior to the bottom plate installation step. In this step, an electrophoretic coating is applied to the container. This electrophoretic coating forms a layer on virtually the entire surface of the container to protect its steel structure. In other words, the bottom structure 100 also has an electrophoretic coating layer. When the electrophoretic coating layer provides sufficient waterproofing, asphalt paint application to the bottom structure 100 is unnecessary. Specifically, asphalt paint application is not required to the underframe 110, corner brackets 102, and lower end beams 103.

[0093] When the electrophoretic paint layer cannot meet the waterproof requirements or when further improvement in waterproof requirements is needed, the bottom structure 100 of the enclosure needs to be coated with asphalt paint. That is, the base frame 110, the bottom corner pieces 102, and the lower end beam 103 are coated with asphalt paint.

[0094] In this embodiment, the asphalt paint can be applied before the base plate installation step, in which case the asphalt paint is generally applied to almost the entire surface of the container bottom structure 100. Alternatively, the asphalt paint can be applied after the base plate installation step, in which case the portion of the underframe 110 located below the base plate 120 needs to be coated with asphalt paint. After the asphalt paint is applied, the container is dried to allow the asphalt paint to cure and form an asphalt paint layer.

[0095] Preferably, in the container painting step, the container that has already been electrophoretically coated is then powder coated. The sprayed powder forms a powder coating on the outside of the electrophoretic paint layer to protect the steel structure of the container.

[0096] 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 invention. Terms such as “part” or “component” appearing herein can refer to a single part or a combination of multiple parts. Terms such as “installation” or “installation” appearing herein can refer to one component being directly attached to another component or one component being attached to another component via an intermediary. A feature described in one embodiment herein 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.

[0097] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, those skilled in the art will understand that the present invention is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of the present invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A container bottom structure, characterized in that, It includes a base frame and a base plate, the base plate being mounted on the base frame, the base plate comprising: A base plate body, wherein the base plate body is provided with a tenon, the tenon being recessed upward from the bottom surface of the base plate body and located at the end of the base plate body for mating with the base frame; and A coating layer is bonded to at least the bottom surface of the base plate body, the surface of the tenon, and the side surface of the base plate body to provide waterproof protection for the base plate body. The coating layer includes a first coating layer and a second coating layer. The first coating layer is bonded to the bottom surface of the base plate body, the surface of the tenon, and the side surface of the base plate body. The second coating layer is bonded to the top surface of the base plate body. The first coating layer is made of a flexible film substrate, and the second coating layer is made of a wear-resistant film substrate. The base frame is provided with an electrophoretic paint layer and an asphalt paint layer with waterproof properties. The asphalt paint layer is provided on the outside of the electrophoretic paint layer. The asphalt paint layer is provided on the entire bottom structure before the bottom plate is installed to the base frame, or the asphalt paint layer is provided on the part of the bottom structure below the bottom plate after the bottom plate is installed to the base frame.

2. The box bottom structure according to claim 1, characterized in that, The first coating layer is formed from a single sheet of film substrate.

3. The box bottom structure according to claim 1, characterized in that, Other protective layers are provided between the coating layer and the surface of the base plate body or on the outside of the coating layer.

4. The box bottom structure according to claim 1, characterized in that, The side surface of the base plate body extends downward from the top surface of the base plate body, and the tenon includes a first surface that is connected to the bottom surface of the base plate body and extends upward, and a second surface that is connected to the side surface of the base plate body and extends inward, wherein the first surface is connected to the side surface via the second surface.

5. The box bottom structure according to claim 1, characterized in that, The base plate includes at least two base plate bodies, and the opposite side surfaces of each adjacent base plate body are planar.

6. The box bottom structure according to claim 1, characterized in that, The base plate body has a chamfer at the tenon joint, and the first coating layer is bonded to the surface of the chamfer.

7. The box bottom structure according to claim 1, characterized in that, The second coating layer is formed from another single sheet of film substrate.

8. The box bottom structure according to claim 1, characterized in that, The bottom structure of the box also includes bottom corner pieces and a lower end beam, and the bottom corner pieces and the lower end beam are provided with the electrophoretic paint layer and the asphalt paint layer.

9. The box bottom structure according to claim 1, characterized in that, The base frame includes a mating component, and the tenon overlaps with the mating component to install the base plate onto the base frame. The mating component includes at least one of a bottom side beam, a center beam extending along the centerline of the base frame's length direction, and an angle steel connecting the gooseneck groove and the bottom crossbeam of the base frame.

10. A container, characterized in that, Includes the box bottom structure according to any one of claims 1 to 9.

11. A method for processing containers, characterized in that, Includes the following steps: Base plate pretreatment steps: Make a tenon that is recessed from the bottom surface upwards on the base plate body; Base plate film application steps: The film substrate is adhered to the bottom surface of the base plate body, the surface of the tenon and the side surface of the base plate body to form a first film layer with waterproof function, the first film layer covering the bottom surface of the base plate body, the surface of the tenon and the side surface of the base plate body; A membrane substrate is adhered to the top surface of the base plate body to form a second coating layer of the coating layer, the second coating layer covering the top surface of the base plate body; Container painting steps: Electrophoretic paint is used to coat the container, and asphalt paint is applied to the bottom structure of the container. as well as The base plate installation step involves splicing together at least two of the base plate bodies and installing them onto the underframe of the container. The first coating layer is made of a flexible membrane substrate, and the second coating layer is made of a wear-resistant membrane substrate. Specifically, before the base plate is installed onto the base frame, the entire bottom structure of the box is coated with asphalt paint, or after the base plate is installed onto the base frame, the portion of the bottom structure located below the base plate is coated with asphalt paint.

12. The processing method according to claim 11, characterized in that, In the base plate film application step, the entire film substrate is adhered to the bottom surface of the base plate body, the surface of the tenon, and the side surface of the base plate body to form the first coating layer.

13. The processing method according to claim 11, characterized in that, Other protective layers are provided between the coating layer and the surface of the base plate body or on the outside of the coating layer.

14. The processing method according to claim 11, characterized in that, In the base plate film application step, another whole sheet of the film substrate is adhered to the top surface of the base plate body to form the second coating layer.

15. The processing method according to claim 11, characterized in that, In the pretreatment step of the base plate, a chamfer is also made on the base plate body at the tenon; In the base plate film application step, the film substrate that forms the first coating layer is adhered to the chamfered surface to cover the chamfered surface.

16. The processing method according to claim 11, characterized in that, In the container painting step, the container that has already been electrophoretically coated is then powder coated.

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