container

Abstract

The container comprises a chassis, side plates above the side edges of the chassis, the chassis comprises two bottom side beams respectively on the two sides of the chassis and extending along the longitudinal direction of the chassis and a steel floor, the top of the bottom side beam forms a lap joint part, the two sides of the steel floor respectively form a connecting part, the connecting part is in a flat plate structure so that the upper surface and the lower surface of the connecting part are both flat, the connecting part is lapped on the lap joint part and the lap joint part is welded on the lower surface of the connecting part, the bottom edge of the side plate is butted on the upper surface of the connecting part and the bottom edge of the side plate is welded on the upper surface of the connecting part. The container can facilitate the assembly and welding of the chassis itself and the assembly and welding of the chassis and the side plate, avoids the corrosion of the weld joint between the steel floor and the bottom side beam caused by the goods in the container body, and prolongs the service life of the container.

Description

Technical Field

[0001] This invention relates to the field of logistics and transportation technology, and specifically to a container. Background Technology

[0002] Containers, as logistics transportation tools, are widely used in sea and land transportation. ISO standard containers typically consist of a hexahedral structure composed of a base frame, side panels, front wall, doors, and a top panel. The base frame includes two bottom side beams, multiple bottom crossbeams, and a floor. The two bottom side beams and multiple bottom crossbeams form the framework, and the floor is laid on the framework. Traditional container floors are usually made of wood. The relatively thick wood floor occupies a large amount of space in the height direction of the container, thus affecting the internal cargo space. Furthermore, wooden floors require a large amount of non-recyclable wood, which is detrimental to forest resource protection. Therefore, some existing standard containers are beginning to use steel floors. Steel floors are thinner and lighter, which not only helps to increase the internal space of the container and reduce its weight, but also allows for reuse after the container is damaged or scrapped. Figure 1 As shown, existing containers using steel floors typically have the two sides of the floor 4 welded to the top inner side of the bottom side beam 1. Specifically, the bottom side beam 1 includes a web 2 and a flange 3 formed by bending outward from the top of the web 2. The sides of the steel floor 4 are welded to the bent portion where the web 2 and flange 3 meet. Since the bent portion is a rounded chamfer, it is difficult to weld the sides of the steel floor to the rounded chamfer. Furthermore, after the bottom edge of the side plate 4 is welded to the flange 3, the weld between the steel floor 4 and the bottom side beam 1 is located on the inner side of the side plate 4. That is to say, the weld is located inside the container. With the long-term use of the container, the cargo inside the container will corrode the weld, causing cracks in the weld between the steel floor 4 and the bottom side beam 1. This will seriously affect the normal transportation of cargo. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide a container that can place the weld between the steel floor and the bottom side beam on the outside of the container, so as to avoid the cargo inside the container from corroding the weld between the steel floor and the bottom side beam.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A container, including a frame and side panels located above the sides of the frame; The base frame includes two bottom side beams located on both sides of the base frame and extending longitudinally along the base frame, and a steel floor. The top of the bottom side beams forms an overlap, and the two sides of the steel floor form a connecting part. The connecting part has a flat plate structure so that the upper and lower surfaces of the connecting part are both flat. The connecting part overlaps the overlap and is welded to the lower surface of the connecting part. The bottom edge of the side plate is abutted to the upper surface of the connecting part and is welded to the upper surface of the connecting part.

[0005] The bottom side beam includes a vertically extending web and a lower flange extending outward from the bottom of the web. The top of the web forms an overlap, and at least a portion of the overlap protrudes from the outer side of the web.

[0006] A diagonal support plate is provided between the part of the connecting portion that protrudes from the outer side of the web and the web. The two sides of the diagonal support plate are welded and fixed to the connecting portion and the web, respectively.

[0007] The bottom side beam includes a vertically extending web, a lower flange extending outward from the bottom of the web, and an overlapping part consisting of an upper flange extending outward from the top of the web. The outer side of the connecting part is flush with or protrudes from the outer side of the upper flange.

[0008] The base frame also includes multiple bottom crossbeams, which extend laterally along the base frame and are welded to the two bottom side beams at both ends. The multiple bottom crossbeams are arranged longitudinally along the base frame. Multiple reinforcing beams are provided between two adjacent bottom crossbeams, with the two ends of the reinforcing beams welded and fixed to the two adjacent bottom crossbeams. The multiple reinforcing beams between two adjacent bottom crossbeams extend the lateral arrangement of the base frame.

[0009] The lower and upper surfaces of the steel floor are both flat, with a thickness of 2-4mm; the top of the bottom crossbeam and the top of the reinforcing beam are welded and fixed to the lower surface of the steel floor.

[0010] The cross-sections of the bottom crossbeam and the reinforcing beam are U-shaped, V-shaped, or semi-circular. The lower surface of the steel floor closes the top openings of the bottom crossbeam and the reinforcing beam. The two bottom side beams close the openings at both ends of the bottom crossbeam, and the two adjacent bottom side beams close the openings at both ends of the reinforcing beam.

[0011] The upper surface of the steel floor is provided with multiple raised ribs extending longitudinally along the base frame, and these multiple raised ribs are arranged transversely along the base frame between the two connecting parts.

[0012] The bottom corner piece is connected to the end of the bottom side beam. A corner post extending along the height direction is fixed on the bottom corner piece. A connecting edge extending toward the side plate is provided on the corner post. The connecting edge overlaps with the end of the side plate and is welded and fixed. The bottom of the connecting edge is placed on the upper surface of the connecting part and is welded and fixed to the upper surface of the connecting part.

[0013] The end of the bottom side beam forms an inclined section, which gradually slopes from the end away from the corner piece toward the end closer to the corner piece toward the middle of the base frame laterally. A sealing plate is provided on the corner post. The top of the sealing plate is connected to the end of the connecting part, the bottom is connected to the upper surface of the bottom corner piece, the inner side of the sealing plate is connected to the end of the inclined section near the bottom corner piece, and the outer side is connected to the corner post.

[0014] The steel floor consists of two floor units, which extend longitudinally from one end of the base frame to the other. The two floor units are distributed transversely along the base frame. The outer sides of the two floor units form a connecting part, and the inner sides of the two floor units are welded together. The weld joint of the two floor units is located in the middle of the transverse direction of the base frame.

[0015] The steel floor consists of multiple floor units arranged in two rows along the transverse direction of the base frame. Each row of floor units includes multiple floor units arranged longitudinally along the base frame.

[0016] The beneficial effects of this invention are as follows: This invention extends the connecting part of the steel floor to the top of the bottom side beam, and mates the bottom edge of the side plate with the connecting part. This facilitates the welding of the underframe itself, as well as the welding of the underframe and the side plate. The weld between the connecting part and the bottom side beam is located below the steel floor, that is, on the outside of the container body. There is only one weld between the side plate and the steel floor on the inside of the container body, which avoids corrosion of the weld between the steel floor and the bottom side beam by the cargo inside the container, thus giving the container a longer service life. Attached Figure Description

[0017] Figure 1 This is a structural diagram of an existing shipping container; Figure 2 This is a schematic diagram of the structure of a container according to Embodiment 1 of the present invention; Figure 3 for Figure 2 AA section view; Figure 4 for Figure 2 Schematic diagram of the fit between the center corner post and the steel floor; Figure 5 for Figure 2 Structural diagram of the mid-base frame; Figure 6 This is a schematic diagram of the structure of a container according to Embodiment 2 of the present invention; Figure 7 This is a structural schematic diagram of a container according to Embodiment 3 of the present invention. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings and specific embodiments: like Figure 2 , 3As shown in Figures 4 and 5, this is a container according to Embodiment 1 of the present invention, which includes a base frame 10 and a side plate 20 located above the side of the base frame 10. The base frame 10 includes two bottom side beams 40 and a steel floor 30. The two bottom side beams 40 are located on both sides of the base frame 10 and extend longitudinally along the base frame 10. An overlap portion is formed at the top of the bottom side beams 40. A connecting portion 31 is formed on both sides of the steel floor 30. The connecting portion 31 has a flat plate structure, that is, the upper surface 311 and the lower surface 312 of the connecting portion 31 are both flat. The connecting portions 31 on both sides of the steel floor 30 overlap the overlap portion at the top of the two bottom side beams 40. The lower surface 312 of the connecting portion 31 is welded and fixed to the overlap portion at the top of the bottom side beams 40. The bottom edge of the side plate 20 is welded to the upper surface 311 of the connecting portion 31. Specifically, the bottom side beam 10 has an L-shaped cross-section and includes a vertically extending web 41 and a lower flange 42 extending outward from the bottom of the web 41. The top of the web 41 forms an overlap, and the connecting part 31 overlaps the top of the web 41. A portion of the connecting part 31 protrudes from the outer side of the web 41. When welding the connecting part 31 to the top of the web 41, a weld seam extending continuously along the longitudinal direction of the underframe is formed between the top of the inner and outer sides of the web 41 and the lower surface 312 of the connecting part 31, respectively, to weld and fix the connecting part 31 of the web 41 and the steel floor 30. The connecting part 31 protrudes from the outer side of the web 41, and the bottom edge of the side plate 20 can be welded above the portion of the connecting part 31 that protrudes from the outer side of the web 41, so that the side plate 20 is as far away from the transverse center of the underframe 10 as possible, increasing the distance between the two side plates 20, which is beneficial to increasing the cargo space of the container.

[0019] To ensure the connector 31 has better strength and prevent downward bending deformation of the portion of the connector 31 protruding from the outer side of the web 41 when it is welded to the web 41, an inclined support plate 43 is provided between the portion of the connector 31 protruding from the outer side of the web 41 and the web 41. The two sides of the inclined support plate 43 are welded and fixed to the connector 31 and the web 41 respectively, and the two ends of the inclined support plate 43 extend to the two ends of the bottom beam 40 respectively, closing the two ends of the inclined support plate 43, thus preventing viruses, bacteria and contraband from being hidden in the space enclosed by the inclined support plate 43, the web 41 and the connector 31.

[0020] The base frame 10 also includes multiple bottom crossbeams 11, which extend laterally along the base frame 10. Their two ends are welded to two bottom side beams 40 respectively. Specifically, the ends of the bottom crossbeams 11 are connected to the inner surface of the web plate 41 of the bottom side beam 40. The ends of the bottom crossbeams 11 are welded to the inner surface of the web plate 41. After the multiple bottom crossbeams 11 are welded to the two bottom side beams 40, they form a frame. The steel floor 30 is laid on the frame, and the connecting part 31 of the steel floor 30 is welded to the top of the web plate 41 of the bottom side beam 40. The top of the multiple bottom crossbeams 11 is welded to the lower surface of the steel floor 30. Multiple reinforcing beams 60 are provided between two adjacent bottom crossbeams 11. The two ends of the reinforcing beams 60 are welded to two adjacent bottom crossbeams 11 respectively. The multiple reinforcing beams 60 between two adjacent bottom crossbeams 11 are arranged laterally along the base frame 10. The top surface of the reinforcing beams 60 is welded and fixed to the lower surface of the steel floor 30. By arranging multiple reinforcing beams 60 on the lower surface of the steel floor 30, the steel floor 30 has better strength, which in turn allows the steel floor 30 to be made of flat steel plates, that is, both the upper and lower surfaces of the steel floor 30 are flat, and the steel plates with a smaller thickness can be used for the steel floor 30, for example, the thickness of the steel floor 30 is 2~4mm. The upper surface of the steel floor 30 is a flat plane, and when loading and unloading goods, the forklift can move smoothly on the base frame 10, improving the efficiency of loading and unloading goods. The bottom crossbeam 11 and the reinforcing beam 60 are configured with a U-shaped cross-section. The tops of the bottom crossbeam 11 and the reinforcing beam 60 are welded to the lower surface of the steel floor 30. The lower surface of the steel floor 30 closes the openings at the tops of the bottom crossbeam 11 and the reinforcing beam 60. The inner surfaces of the webs 41 of the two bottom side beams 40 close the openings at both ends of the bottom crossbeam 11. Adjacent bottom crossbeams 11 close the openings at both ends of the reinforcing beam 60. Thus, after the bottom crossbeam 11 and the reinforcing beam 60 are welded to the lower surface of the steel floor 30, a closed structure is formed, preventing the formation of hidden gaps under the underframe 10. This prevents viruses, bacteria, contraband, etc., from hiding under the underframe 10, ensuring the normal flow of containers between different countries and regions. The cross-sections of the bottom crossbeam 11 and the reinforcing beam 60 can also be V-shaped or semi-circular. Of course, the bottom crossbeam 11 and the reinforcing beam 60 can also be made directly from square tubing.

[0021] The bottom corner piece 70 is connected to the end of the bottom side beam 40. A corner post 80 extending along the height direction is fixed on the bottom corner piece 70. A connecting edge 81 extending toward the side plate 20 is provided on the corner post 80. The connecting edge 81 overlaps with the end of the side plate 20 and the end of the side plate 20 is welded and fixed to the connecting edge 81. The bottom of the connecting edge 81 is placed above the steel floor 30 and the bottom of the connecting edge 81 is abutted against the upper surface 311 of the connecting part 31 of the steel floor 30. The connecting edge 81 is welded and fixed to the upper surface 311 of the connecting part 31. Thus, with the side plate 20 placed above the connecting part 31, the corner post 80 can overlap and cooperate with the end of the side plate 20 by placing the connecting edge 81 of the corner post 80 above the end of the connecting part 31. The end of the bottom side beam 40 forms an inclined section 401. This inclined section 401 gradually slopes from the end away from the bottom corner piece 70 towards the end closer to the bottom corner piece 70 towards the middle of the underframe laterally. By setting the end of the bottom side beam 40 to an inclined structure, the two ends of the underframe 10 are respectively inwardly tapered, preventing the corners of the container underframe from colliding with each other during container transfer. A sealing plate 82 is provided on the corner post 80. The top of the sealing plate 82 is connected to the end of the connecting part 31, and the bottom is connected to the upper surface of the bottom corner piece 70. The inner side of the sealing plate 82 is connected to the end of the inclined section 401 near the bottom corner piece 70, and the outer side is connected to the corner post 80. In this way, in some containers with a large underframe height, the sealing plate 82 is used to close the hollow part between the steel floor 30 and the bottom corner piece 70.

[0022] The steel floor 30 is composed of multiple floor units 301. Specifically, the multiple floor units 301 are arranged in two rows along the transverse direction of the base frame 10. Each row of floor units 301 includes multiple floor units 301 arranged longitudinally along the base frame 10. All floor units 301 are the same size. The uniform size of the floor units 301 can simplify the structure of the container and improve the production efficiency of the container.

[0023] It should be noted that the steel floor 30 is not limited to the aforementioned flat plate structure. It can also have multiple ribs on the steel floor 30 to enhance its own strength. The ribs can extend longitudinally along the base frame 10, and multiple ribs are arranged transversely along the base frame 10 between the connecting portions 31 on both sides of the steel floor 30. In other words, ribs are provided on the parts other than the connecting portions 31 formed on both sides of the steel floor 30 to ensure that the connecting portions 31 on both sides of the steel floor 30 are flat plate structures. By enhancing the strength of the steel floor 30 through the ribs, the steel floor 30 can use plates with smaller thicknesses, further reducing the self-weight of the container.

[0024] Figure 6In the container of Embodiment 2 of the present invention, the bottom side beam 50 of the underframe 10 includes a vertically extending web 51, a lower flange 52 extending outward from the bottom of the web 51, and an upper flange 53 extending outward from the top of the web 51. The upper flange 53 forms the overlapping part of the bottom side beam 50. The connecting part 31 of the steel floor 30 overlaps the upper flange 53, and the outer side of the connecting part 31 is flush with the outer side of the upper flange 53. The bottom edge of the side plate 20 is then joined to the connecting part. The upper surface of the connecting part 31 is welded to the bottom edge joint of the connecting part 31 and the side plate 20. The portion of the connecting part 31 that contacts the inner side edge of the upper flange 53 and the portion that contacts the outer side edge of the upper flange 53 are also welded. The end of the bottom side beam 11 is butted to the inner side of the web plate 51. Alternatively, the outer side edge of the connecting part 31 of the steel floor 30 can protrude from the outer side edge of the upper flange 53, and the portion of the upper flange 53 that contacts the connecting part 31 is welded below the connecting part 31. The other structures of the container in this second embodiment are the same as those in the first embodiment, and will not be repeated here.

[0025] Figure 7 In the container of Embodiment 3 of the present invention, the steel floor 30 includes two floor units 302. Each floor unit 302 extends longitudinally from one end of the base frame 10 to the other. That is, longitudinally, the floor unit 302 is a single, integral piece of material. The two floor units 302 are distributed transversely along the base frame 10. The outer sides of each floor unit 302 form a connecting portion, and the inner edges of the two floor units 302 are welded together. The weld joint is located in the middle of the transverse direction of the base frame 10, meaning the floor units 302 have the same width. During processing, the steel coil can be uncoiled, leveled, and cut to a predetermined size to form a floor unit 302, which is then directly laid on the frame composed of the bottom side beams and bottom cross beams. The other structures of the container in Embodiment 3 are the same as in Embodiments 1 and 2, and will not be repeated here.

[0026] In this invention, the connecting part of the steel floor extends to the top of the bottom side beam, and the bottom edge of the side plate is joined to the connecting part, which facilitates the welding of the underframe itself and the welding of the underframe and the side plate. The weld between the connecting part and the bottom side beam is located below the steel floor, that is, on the outside of the container body. There is only one weld between the side plate and the steel floor on the inside of the container body, which avoids the corrosion of the weld between the steel floor and the bottom side beam by the cargo inside the container, thus giving the container a longer service life.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A container, characterized in that, Includes the base frame and the side panels located above the sides of the base frame; The base frame includes two bottom side beams located on both sides of the base frame and extending longitudinally along the base frame, and a steel floor. The top of the bottom side beams forms an overlap, and the two sides of the steel floor form a connecting part. The connecting part has a flat plate structure so that the upper and lower surfaces of the connecting part are both flat. The connecting part overlaps the overlap and is welded to the lower surface of the connecting part. The bottom edge of the side plate is abutted to the upper surface of the connecting part and is welded to the upper surface of the connecting part.

2. The container as described in claim 1, characterized in that, The bottom side beam includes a vertically extending web and a lower flange extending outward from the bottom of the web. The top of the web forms an overlap, and at least a portion of the overlap protrudes from the outer side of the web.

3. The container as described in claim 2, characterized in that, A diagonal support plate is provided between the part of the connecting portion that protrudes from the outer side of the web and the web. The two sides of the diagonal support plate are welded and fixed to the connecting portion and the web, respectively.

4. The container as described in claim 1, characterized in that, The bottom side beam includes a vertically extending web, a lower flange extending outward from the bottom of the web, and an overlapping part consisting of an upper flange extending outward from the top of the web. The outer side of the connecting part is flush with or protrudes from the outer side of the upper flange.

5. The container as described in claim 1, characterized in that, The base frame also includes multiple bottom crossbeams, which extend laterally along the base frame and are welded to the two bottom side beams at both ends. The multiple bottom crossbeams are arranged longitudinally along the base frame. Multiple reinforcing beams are provided between two adjacent bottom crossbeams, with the two ends of the reinforcing beams welded and fixed to the two adjacent bottom crossbeams. The multiple reinforcing beams between two adjacent bottom crossbeams extend the lateral arrangement of the base frame.

6. The container as described in claim 5, characterized in that, The lower and upper surfaces of the steel floor are both flat, with a thickness of 2-4mm; the top of the bottom crossbeam and the top of the reinforcing beam are welded and fixed to the lower surface of the steel floor.

7. The container as described in claim 6, characterized in that, The cross-sections of the bottom crossbeam and the reinforcing beam are U-shaped, V-shaped, or semi-circular. The lower surface of the steel floor closes the top openings of the bottom crossbeam and the reinforcing beam. The two bottom side beams close the openings at both ends of the bottom crossbeam, and the two adjacent bottom side beams close the openings at both ends of the reinforcing beam.

8. The container as described in claim 5, characterized in that, The upper surface of the steel floor is provided with multiple raised ribs extending longitudinally along the base frame, and these multiple raised ribs are arranged transversely along the base frame between the two connecting parts.

9. The container as described in claim 9, characterized in that, The bottom corner piece is connected to the end of the bottom side beam. A corner post extending along the height direction is fixed on the bottom corner piece. A connecting edge extending toward the side plate is provided on the corner post. The connecting edge overlaps with the end of the side plate and is welded and fixed. The bottom of the connecting edge is placed on the upper surface of the connecting part and is welded and fixed to the upper surface of the connecting part.

10. The container as claimed in claim 9, characterized in that, The end of the bottom side beam forms an inclined section, which gradually slopes from the end away from the corner piece toward the end closer to the corner piece toward the middle of the base frame laterally. A sealing plate is provided on the corner post. The top of the sealing plate is connected to the end of the connecting part, the bottom is connected to the upper surface of the bottom corner piece, the inner side of the sealing plate is connected to the end of the inclined section near the bottom corner piece, and the outer side is connected to the corner post.

11. The container as claimed in claim 11, characterized in that, The steel floor consists of two floor units, which extend longitudinally from one end of the base frame to the other. The two floor units are distributed transversely along the base frame. The outer sides of the two floor units form a connecting part, and the inner sides of the two floor units are welded together. The weld joint of the two floor units is located in the middle of the transverse direction of the base frame.

12. The container as claimed in claim 1, characterized in that, The steel floor consists of multiple floor units arranged in two rows along the transverse direction of the base frame. Each row of floor units includes multiple floor units arranged longitudinally along the base frame.

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