Plate splicing structure and refrigerated container

Abstract

The utility model relates to the field of containers, in particular to a plate splicing structure which comprises at least two plates, a section bar is connected between every two adjacent plates, each plate is provided with a bent edge, each section bar comprises an inserting groove, the bent edges of every two adjacent plates are jointly inserted into the inserting groove of the same section bar, and the section bars are made of PVC or metal materials. And the two bent edges can be clamped through pre-tightening force. The inner door plate of the refrigerated container comprises a plate splicing structure, and the inner surface of a plate faces an outer door plate of the refrigerated container. According to the utility model, the pre-tightening force of the sectional material is utilized, so that the welding-free and riveting-free splicing of two plates is realized, and the problems of uneven surface, foam leakage, water leakage and the like after foaming are avoided.

Description

Technical Field

[0001] The utility model relates to the field of containers, in particular to a plate splicing structure and a refrigerated container. Background Art

[0002] The door panel of a cold box container usually consists of an inner door panel, an outer door panel, a door frame and a polyurethane foam structure. The inner door panel is usually made of stainless steel thin plate. For special refrigerated boxes, the inner door panel is relatively larger in size than that of standard refrigerated boxes. Therefore, there is generally no coiled material with a suitable width for the inner door panel, and splicing is required. The commonly used splicing methods are welding and rivet connection. Refer to Figure 1 and Figure 2 , if the welding method is adopted, it is easy to have welding deformation during the butt welding of 0.7mm thin plates, and the surface is uneven after foaming; if the rivet connection is adopted, the connection sealing performance is poor, and it is easy to leak foam at the gap during foaming, and water vapor will also enter from the rivet holes. Moreover, the appearance of the rivet structure is not beautiful. In the utility model patent with the application number 200420003008.5 retrieved, although the inner plate support is used to insert the folded edges of two adjacent inner plate sheets into the slots of an inner plate support together, this structure lacks the clamping and further sealing functions. Content of the Utility Model

[0003] The purpose of the utility model is to provide a plate splicing structure and a refrigerated container to solve the problems raised in the background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A plate splicing structure includes at least two plates. A profile is connected between two adjacent plates. The plate has a bent edge. The profile includes a slot. The bent edges of two adjacent plates are inserted into the slot of the same profile together. The profile is made of PVC or metal material and can clamp the two bent edges through a pre-tightening force.

[0005] Preferably, the profile includes two tooth-shaped protrusions. The tooth-shaped protrusions are located on both sides of the slot. The two tooth-shaped protrusions respectively bite with the two bent edges.

[0006] Preferably, a frosted anti-slip tape is added to the inner surface of the bent edge.

[0007] Preferably, the profile includes two glue storage cavities. The glue storage cavities are located on both sides of the entrance of the slot. The glue storage cavities can be pre-glued and then fully contact with the inner surface of the plate.

[0008] The present utility model also provides the following technical solution: a refrigerated container, the door panel structure of the refrigerated container includes an outer door panel, an inner door panel, a door frame and a polyurethane foam structure, the inner door panel includes the above-mentioned plate splicing structure, the inner surface of the plate faces the outer door panel, and the polyurethane foam structure is placed in the space surrounded by the outer door panel, the inner door panel and the door frame.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. The present utility model provides a profile made of PVC or metal, and the pre-tightening force of the profile itself is used to clamp the two plates.

[0011] 2. The toothed protrusions of the profile in the present utility model enhance the friction between the profile and the plate, playing an anti-slip function and making the plate not easy to fall off.

[0012] 3. The tape on the bent edge in the present utility model is used to enhance the friction when contacting the profile.

[0013] 4. The glue storage cavity of the profile in the present utility model can be pre-glued before installation, and can further improve the sealing performance and adhesion with the plate after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of a welded splice plate in the prior art;

[0015] Figure 2 is a schematic diagram of rivet connection in the prior art;

[0016] Figure 3 is an application schematic diagram of an embodiment of the present utility model (the enlarged view in the circle is a cross-sectional view in the direction indicated by the arrow in the figure);

[0017] Figure 4 is Figure 3 a cross-sectional view of the profile in the embodiment;

[0018] Figure 5 is Figure 3 a schematic diagram of the plate splicing structure in the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] An embodiment of the present utility model discloses a plate splicing structure in a door panel of a refrigerated container. Please refer to Figure 3 , the door panel structure of the refrigerated container includes an outer door panel 1, an inner door panel 2, a door frame 3 and a polyurethane foam structure 4, and the polyurethane foam structure 4 is placed in the space surrounded by the outer door panel 1, the inner door panel 2 and the door frame 3.

[0020] The inner door panel 2 includes three plates 21, and two adjacent plates 21 are fixedly connected by a profile 23. The overall length of the profile 23 is the same as that of the plate 21 to ensure that all the plates 21 are connected. Refer to Figure 4 , the cross-section of the profile 23 is approximately in a U shape, the middle space is a slot 231, and the profile 23 is made of PVC or metal and has a pre-tightening force.

[0021] Refer to Figure 5 , the connection parts of adjacent plates 21 are all subjected to bending and flanging treatment, so that the side edges of each plate 21 form bending edges 22, and the bending edges 22 are perpendicular to the plate 21. The bending edges 22 of two adjacent plates 21 are inserted into the same slot 231 of the profile 23 together, and the pre-tightening force provided by the material of the profile 23 can clamp the two bending edges 22. A frosted anti-slip tape is added to the inner surface of the bending edge 22 to enhance the friction when contacting the profile 23.

[0022] Each profile 23 also includes two tooth-shaped protrusions 232 and two glue storage cavities 233. The tooth-shaped protrusions 232 are located on both sides of the slot 231, and the two tooth-shaped protrusions 232 are respectively engaged with the two bending edges 22. The glue storage cavities 233 are located on both sides of the entrance of the slot 231 and face the inner surface of the plate 21. The glue storage cavities 233 can be pre-glued and then in full contact with the inner surface of the plate 21.

[0023] When manufacturing the door panel of the refrigerated container, first face the inner surface of the plate 21 outward to the outer door panel 1, and splice the plates 21. When splicing, first pre-glue the glue storage cavity 233, then snap the profile 23 into the bending edges 22 of two adjacent plates 21, and use the tooth-shaped protrusions 232 inside the profile 23 to engage with the bending edges 22, while keeping the pre-glued glue storage cavity 233 in full contact with the inner surface of each plate 21. Wait for the glue to dry completely to obtain the spliced inner door panel 2, so that the inner door panel 2, the outer door panel 1, and the door frame 3 are assembled into a closed cavity, and finally foam filling treatment is carried out in the closed cavity.

[0024] The plate splicing structure is not only applicable to the inner door panel of the refrigerated container, but also applicable to the splicing of thin plates with the requirement of non-welding, and has stronger sealing performance compared with riveting.

[0025] In summary, the utility model uses a special profile 23 made of PVC or metal to clamp two adjacent plates 21, uses the tooth-shaped protrusions 232 and the frosted anti-slip tape to enhance the friction between the profile 23 and the plate 21, and uses the glue storage cavity 233 to pre-glue to further improve the sealing performance and bonding property with the plate 21, so that the door panel of the refrigerated container can also have a flat surface after foaming, and at the same time avoid problems such as foam leakage and water leakage.

[0026] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A plate splicing structure, comprising at least two plates (21), characterized in that: A profile (23) is connected between two adjacent sheets (21). The sheet (21) has a bent edge (22). The profile (23) includes a slot (231). The bent edges (22) of two adjacent sheets (21) are jointly inserted into the slot (231) of the same profile (23). The profile (23) is made of PVC or metal and can clamp the two bent edges (22) through a pre-tightening force.

2. The splicing structure of the board (21) according to claim 1, characterized in that: The profile (23) includes two tooth-shaped protrusions (232). The tooth-shaped protrusions (232) are located on both sides of the slot (231). The two tooth-shaped protrusions (232) are respectively engaged with the two bent edges (22).

3. The splicing structure of the board (21) according to claim 1, characterized in that: A frosted anti-slip tape is added to the inner surface of the bent edge (22).

4. The splicing structure of the board (21) according to claim 1, characterized in that: The profile (23) includes two glue storage cavities (233). The glue storage cavities (233) are located on both sides of the entrance of the slot (231). The glue storage cavities (233) can be pre-glued and then fully contact the inner surface of the sheet (21).

5. A refrigerated container, characterized in that: The door panel structure of the refrigerated container includes an outer door panel (1), an inner door panel (2), a door frame (3) and a polyurethane foam structure (4). The inner door panel (2) includes a splicing structure of the sheets (21) as described in any one of claims 1-4. The inner surface of the sheet (21) faces the outer door panel (1). The polyurethane foam structure (4) is placed in the space enclosed by the outer door panel (1), the inner door panel (2) and the door frame (3).

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