Fire door for a container, container

Abstract

This utility model discloses a fireproof door for containers and a container. The fireproof door for containers includes at least one door panel, which comprises: an outer door panel skin, an inner door panel skin, and a reinforcing beam. The outer door panel skin is disposed on the outer side of the door panel; the inner door panel skin is disposed on the inner side of the door panel; the reinforcing beam is disposed on the outer door panel skin; the inner door panel skin is fixedly connected to the reinforcing beam by fasteners; and a heat insulation gap exists between the inner door panel skin and the outer door panel skin. This utility model, by providing a heat insulation gap between the inner and outer door panel skins, prevents direct contact between them, thus blocking the heat conduction path between the inner and outer sides of the door panel, significantly improving the thermal resistance of the fireproof door and enhancing the fire resistance performance of the container.

Description

Technical Field

[0001] This utility model generally relates to the technical field of cargo boxes and containers, and more specifically to a fireproof door for containers and containers. Background Technology

[0002] Containers can carry packaged or unpackaged goods for sea, land, and air transport, making them an important mode of transport in international trade multimodal transport. Containers do not require moving the goods inside during transshipment, allowing for rapid loading and unloading as a single transport unit. They are easy to handle using mechanical equipment and can be reused repeatedly over a long period. Using containers for freight transport can greatly improve transport efficiency and reduce transport costs.

[0003] Currently, marine energy storage is a hot topic in the industry. Energy storage containers typically house lithium battery packs. Because batteries are flammable, fire suppression systems are installed inside the containers to ensure transportation safety. Furthermore, fire-resistant structures are required for the container body and doors to prevent heat transfer from the interior to the exterior. However, existing fire doors have inadequate fire-resistant structures, resulting in insufficient fire protection.

[0004] Therefore, there is a need to provide a fireproof door for containers and containers to at least partially solve the above problems. Utility Model Content

[0005] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section 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.

[0006] To at least partially solve the above problems, a first aspect of this utility model provides a fireproof door for a container, comprising at least one door panel, said door panel comprising:

[0007] Door panel outer skin, the door panel outer skin being disposed on the outer side of the door panel;

[0008] Door panel inner skin, the door panel inner skin being disposed on the inner side of the door panel;

[0009] A reinforcing beam is provided on the outer skin of the door panel, and the inner skin of the door panel is fixedly connected to the reinforcing beam by fasteners. There is a heat insulation gap between the inner skin of the door panel and the outer skin of the door panel.

[0010] Optionally, the door panel further includes:

[0011] The first fireproof layer is disposed in close contact with the inner side of the outer skin of the door panel and the inner side of the inner skin of the door panel, and extends to the space between the reinforcing beam and the inner skin of the door panel.

[0012] Optionally, the door panel further includes:

[0013] The second fireproof layer is formed by wrapping the first fireproof layer around the second fireproof layer.

[0014] Optionally, the first fireproof layer is a magnesium oxide board or a calcium silicate board, and the second fireproof layer is ceramic wool or rock wool.

[0015] Optionally, the reinforcing beam includes:

[0016] A reinforcing beam is provided along the width direction of the outer skin of the door panel;

[0017] A reinforcing vertical beam is provided, which is set along the height direction of the outer skin of the door panel, and the two ends of the reinforcing horizontal beam are fixedly connected to the reinforcing vertical beam.

[0018] Optionally, the reinforcing beam includes:

[0019] The first reinforcing crossbeam is disposed at the upper and lower ends of the outer skin of the door panel;

[0020] The second reinforcing beam is located in the middle of the outer skin of the door panel.

[0021] Optionally, the cross-sectional shape of the reinforcing beam is C-shaped or U-shaped;

[0022] The cross-sectional shape of the reinforcing vertical beam is C-shaped, U-shaped, or Z-shaped.

[0023] Optionally, the reinforcing crossbeam and the reinforcing vertical beam are respectively welded and fixed to the outer skin of the door panel.

[0024] Optionally, the fastener includes:

[0025] Bolts, which connect the inner skin of the door panel and the reinforcing beam;

[0026] A nut, which connects to the bolt and is disposed inside the reinforcing beam;

[0027] A heat-insulating gasket is disposed on the bolt and is tightly attached to the reinforcing beam under the constraint of the nut.

[0028] Optionally, the heat insulation pad is a ceramic sheet.

[0029] Optionally, the outer edge of the door panel is provided with a first folded edge, the inner edge of the door panel is provided with a second folded edge, the heat insulation gap is provided between the first folded edge and the second folded edge, and fireproof adhesive is provided in the heat insulation gap.

[0030] Optionally, the fire door for the container further includes:

[0031] A waterproof sealing strip is provided around the perimeter of the door panel.

[0032] Optionally, the fire door for the container further includes:

[0033] The first fixing sheet metal part is disposed on the inner side of the first door panel and near the edge. The length of the first fixing sheet metal part is not less than the length of the door panel, and the width of the first fixing sheet metal part is greater than the gap between the first door panel and the second door panel when the fire door for the container is closed.

[0034] A first fire-resistant expanding rubber strip is disposed on the first fixed sheet metal part. When the fire door for the container is closed, the first fire-resistant expanding rubber strip is tightly attached to the second door panel to seal the gap between the first fixed sheet metal part and the second door panel.

[0035] A second aspect of this utility model provides a container, comprising: a fireproof door for a container as described in any of the above technical solutions.

[0036] Optionally, the container further includes:

[0037] A door frame, which is installed on the container body;

[0038] The second fixing sheet metal part is disposed on the inner side of the door frame and extends toward the interior of the door frame;

[0039] The second fire-resistant expansion strip is disposed on the second fixed sheet metal part. When the fire door for the container is closed, the second fire-resistant expansion strip is tightly attached to the door panel to seal the gap between the second fixed sheet metal part and the door panel.

[0040] Optionally, the container further includes:

[0041] The fireproof layer inside the box is located on the inner side of the door frame and the inner side of the second fixed sheet metal part.

[0042] According to this utility model, a fireproof door for a shipping container and the container itself are designed. By setting a heat-insulating gap between the inner and outer skin of the door panel, the inner and outer skins are not in direct contact, thus blocking the heat conduction path between the inner and outer sides of the door panel. This significantly improves the thermal resistance of the fireproof door, effectively preventing heat from the inside of the container from being transferred to the outside, thereby improving the fire resistance performance of the container and meeting the A60 fire protection standard. When a fire occurs inside the container, the flames and high temperatures are contained within the container and will not affect the outside of the container. Attached Figure Description

[0043] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0044] Figure 1 This is a front view of a container according to a preferred embodiment of the present invention;

[0045] Figure 2 for Figure 1 A sectional view along the middle AA;

[0046] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0047] Figure 4 for Figure 2 The image shows a magnified portion of the scene, excluding the fireproof layer.

[0048] Figure 5 for Figure 1 A sectional view along the middle edge BB;

[0049] Figure 6 for Figure 5 A magnified view of a portion of the image;

[0050] Figure 7 for Figure 5 The image shows a magnified portion of the scene, excluding the fireproof layer.

[0051] Figure 8 This is a right view of a door vertical beam according to a preferred embodiment of the present invention;

[0052] Figure 9 This is a perspective view of a door panel outer skin according to a preferred embodiment of the present invention;

[0053] Figure 10 This is a perspective view of a door panel outer skin according to a preferred embodiment of the present invention.

[0054] Explanation of reference numerals in the attached figures:

[0055] 100: Container; 101: Bottom side beam

[0056] 102: Top and side beams; 103: Door panels

[0057] 104: Post 105: Locking bar

[0058] 106: Fireproof layer inside the box; 107: Second fixed sheet metal part

[0059] 108: Second fire-resistant expansion strip 109: Fasteners

[0060] 110: Waterproof sealing strip 111: Door handle

[0061] 112: Heat insulation gasket; 131: Door panel outer skin

[0062] 132: Door panel inner skin; 133: First reinforcing crossbeam

[0063] 134: Second reinforcing beam; 135: First fireproof layer

[0064] 136: Second fireproof layer; 137: Fireproof adhesive

[0065] 138: Reinforcing vertical beam; 139: Thermal insulation gap

[0066] 140: Hinge; 141: First fixed sheet metal part

[0067] 142: First fire-resistant expansion strip; 143: First folded edge

[0068] 144: Second fold 145: Customs board Detailed Implementation

[0069] 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.

[0070] To fully understand this invention, a detailed description will be set forth in the following description. It should be understood that these embodiments are provided so that the disclosure of this invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. Obviously, the implementation of embodiments 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 be available in addition to these detailed descriptions.

[0071] 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."

[0072] It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and similar expressions used in this utility model are for illustrative purposes only and are not intended to be limiting.

[0073] From the heat transfer formula R=ΔT / P, we know that:

[0074] Where R is the thermal resistance, ΔT is the temperature difference between the inner and outer walls, and P is the heating power;

[0075] To improve the fire resistance of a shipping container, the temperature difference between the inside and outside of the container door must be increased, which necessitates increasing thermal resistance. As is known in heat transfer theory, increasing thermal resistance requires increasing the path length for heat transfer and using materials with poor thermal conductivity.

[0076] Based on the above principles, this utility model employs a variety of innovative technologies to improve the thermal resistance of the container door and enhance the fire resistance of the container.

[0077] This utility model discloses a fireproof door for containers and a container.

[0078] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0079] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in a preferred embodiment, a fireproof door for a container includes at least one door panel 103, and may include two or more door panels 103, wherein one door panel 103 is a single door and the two door panels 103 are double doors. Figure 1 The image shows the side wall of container 100, which is equipped with five door panels 103, forming one single door and two double doors; if a fire door is installed at the end of container 100, it is usually a double door.

[0080] Door panel 103 includes: door panel outer skin 131, door panel inner skin 132, and reinforcing beam;

[0081] The door panel outer skin 131 is located on the outside of the door panel 103, and the door panel outer skin 131 is made of steel plate through sheet metal processing.

[0082] The inner skin 132 of the door panel is located on the inner side of the door panel 103. The inner skin 132 of the door panel is made of steel plate through sheet metal processing.

[0083] A reinforcing beam is installed on the outer skin 131 of the door panel, and the inner skin 132 of the door panel is fixedly connected to the reinforcing beam by fasteners 109. There is a heat insulation gap 139 between the inner skin 132 of the door panel and the outer skin 131 of the door panel.

[0084] The reinforcing beam is made of steel plate using sheet metal processing. The reinforcing beam is fixedly connected to the outer skin 131 of the door panel, which can be fixed by welding.

[0085] The inner door panel 132 is connected to the reinforcing beam only through fasteners 109 and has no direct contact with the outer door panel 131, thus cutting off the heat conduction path between the inner door panel 132 and the outer door panel 131.

[0086] In this embodiment, the fireproof door for the container has a heat insulation gap 139 between the inner skin 132 and the outer skin 131 of the door panel. The inner skin 132 and the outer skin 131 of the door panel do not have direct contact, which blocks the heat conduction path between the inner and outer sides of the door panel 103. This significantly improves the thermal resistance of the fireproof door, effectively prevents heat from the inside of the container from being transferred to the outside, and improves the fire resistance of the container 100.

[0087] The outer skin 131 and inner skin 132 of the door panel are made of steel plates through sheet metal processing, which can be integrally formed, with less welding, saving manufacturing costs, improving the flatness of the appearance, and making it more compatible with the container 100.

[0088] In one implementation, such as Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, door panel 103 also includes:

[0089] The first fireproof layer 135 is installed close to the inner side of the outer skin 131 and the inner side of the inner skin 132 of the door panel, and extends to the space between the reinforcing beam and the inner skin 132 of the door panel.

[0090] The first fireproof layer 135 can be made of inorganic fireproof board, which is a rigid material, and is fixed to the outer skin 131 and the inner skin 132 of the door panel by fasteners. The height of the reinforcing beam is less than the height of the interlayer space between the inner skin 132 and the outer skin 131 of the door panel, leaving space for the first fireproof layer 135.

[0091] By setting a first fireproof layer 135, heat conduction in the space between the inner skin 132 and the outer skin 131 of the door panel is isolated, thereby increasing the thermal resistance of the fire door. Because the first fireproof layer 135 extends between the reinforcing beam and the inner skin 132 of the door panel, and the inner skin 132 of the door panel and the reinforcing beam are not in direct contact, the heat conduction path between the inner skin 132 of the door panel and the reinforcing beam is interrupted, which also interrupts the heat conduction path between the inner skin 132 of the door panel and the outer skin 131 of the door panel.

[0092] In one implementation, such as Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, door panel 103 also includes:

[0093] The second fireproof layer 136 is formed by the first fireproof layer 135 wrapping around the second fireproof layer 136.

[0094] The second fireproof layer 136 can be made of flexible fireproof material and filled inside the cavity of the first fireproof layer 135.

[0095] By adding a second fireproof layer 136, the thermal resistance of the fire door can be further improved.

[0096] The inner skin 132 of the door panel is fixedly connected to the reinforcing beam by fasteners 109. Fasteners 109 can tighten the inner skin 132 of the door panel and the outer skin 131 of the door panel, and press the first fireproof layer 135 and the second fireproof layer 136 tightly.

[0097] In one embodiment, the first fireproof layer 135 is a magnesium oxide board or a calcium silicate board, and the second fireproof layer 136 is ceramic wool or rock wool, which have the characteristics of high temperature resistance and flame retardancy, and are excellent fireproof materials.

[0098] In one implementation, such as Figure 2 , Figure 4 , Figure 5 , Figure 7 As shown, the reinforcing beam includes:

[0099] A reinforced crossbeam is installed along the width direction of the outer skin 131 of the door panel;

[0100] The reinforcing vertical beam 138 is set along the height direction of the outer skin 131 of the door panel, and the two ends of the reinforcing horizontal beam are fixedly connected to the reinforcing vertical beam 138, which can be fixedly connected by welding.

[0101] The reinforcing horizontal beam and the reinforcing vertical beam 138 are welded and fixed to the outer skin 131 of the door panel. By setting the reinforcing horizontal beam and the reinforcing vertical beam 138, the structural strength of the door panel 103 is improved, preventing the door panel 103 from deforming during use.

[0102] In one implementation, such as Figure 2 , Figure 8 As shown, the reinforcing beam includes:

[0103] The first reinforcing crossbeam 133 is provided at the upper and lower ends of the door panel outer skin 131;

[0104] The second reinforcing beam 134 is located in the middle of the outer skin 131 of the door panel.

[0105] A first reinforcing beam 133 is provided at the upper and lower ends of the door panel skin 131 to enhance the structural strength of the end of the door panel 103. Multiple second reinforcing beams 134 are provided in the middle of the door panel skin 131 to enhance the structural strength of the middle of the door panel 103.

[0106] In one implementation, such as Figure 2 , Figure 5 , Figure 8 , Figure 10 As shown, the cross-sectional shape of the reinforcing beam is C-shaped or U-shaped;

[0107] The cross-sectional shape of the reinforcing vertical beam 138 is C-shaped, U-shaped, or Z-shaped.

[0108] Both the reinforcing crossbeam and the reinforcing vertical beam 138 are made of steel plates using sheet metal processing. The first reinforcing crossbeam 133 in the figure has an asymmetrical U-shaped cross-section, which is mainly to better strengthen the structural strength of the end of the door panel 103. The second reinforcing crossbeam 134 has a symmetrical U-shaped cross-section.

[0109] In one implementation, such as Figure 3 , Figure 6 As shown, fastener 109 includes:

[0110] Bolts are used to connect the inner skin of the door panel 132 and the reinforcing beam. The inner skin of the door panel 132 and the reinforcing beam are respectively provided with connection holes, and the bolts are inserted into the connection holes.

[0111] Nuts, nut connecting bolts, and are located inside the reinforcing beam, thereby fixing the door panel inner skin 132 and the reinforcing beam together;

[0112] The heat insulation gasket 112 is installed on the bolt and is tightly attached to the reinforcing beam under the constraint of the nut. The heat insulation gasket 112 can isolate the nut from the inner wall of the reinforcing beam, thereby isolating the heat conduction path between the reinforcing beam and the bolt, and thus isolating the heat conduction path between the reinforcing beam and the inner skin 132 of the door panel, ensuring that the heat conduction path between the inner skin 132 of the door panel and the outer skin 131 of the door panel is isolated.

[0113] In one embodiment, the heat insulation pad 112 is a ceramic sheet with excellent heat insulation properties.

[0114] In one implementation, such as Figure 4 , Figure 7 , Figure 9 , Figure 10As shown, the edge of the outer skin 131 of the door panel is provided with a first folded edge 143, and the edge of the inner skin 132 of the door panel is provided with a second folded edge 144. The heat insulation gap 139 is provided between the first folded edge 143 and the second folded edge 144. Fireproof adhesive 137 is provided in the heat insulation gap 139. The fireproof adhesive 137 fills the heat insulation gap 139, so that the interlayer space between the inner skin 132 of the door panel and the outer skin 131 of the door panel is sealed, and the partition structure between the inner skin 132 of the door panel and the outer skin 131 of the door panel is better guaranteed.

[0115] The first folded edge 143 and the second folded edge 144 are manufactured using sheet metal bending technology. There is also a gap between the first reinforcing crossbeam 133, the reinforcing vertical beam 138 and the first folded edge 143 and the second folded edge 144. A first fireproof layer 135 is installed in the gap to prevent the first reinforcing crossbeam 133, the reinforcing vertical beam 138 and the second folded edge 144 from direct contact.

[0116] In one implementation, such as Figure 2 , Figure 5 As shown, fire doors used for containers also include:

[0117] Waterproof sealing strip 110 is installed around the perimeter of door panel 103. When the fire door is closed, the waterproof sealing strip 110 can seal the gap between the two door panels 103, as well as the gap between the door panel 103 and the door frame (post 104, bottom side beam 101, top side beam 102), preventing moisture from entering the container from the outside.

[0118] In one implementation, such as Figure 5 As shown, fire doors used for containers also include:

[0119] The first fixed sheet metal part 141 is disposed on the inner side of the first door panel 103 and near the edge. Specifically, it is fixedly connected to the inner skin 132 of the door panel. It can be fixedly connected by welding. The length of the first fixed sheet metal part 141 is not less than the length of the door panel 103, and the width of the first fixed sheet metal part 141 is greater than the gap between the first door panel 103 and the second door panel 103 when the fire door is closed.

[0120] The first fireproof expansion strip 142 is disposed on the first fixed sheet metal part 141. When the fire door is closed, the first fireproof expansion strip 142 is tightly attached to the second door panel 103 to seal the gap between the first fixed sheet metal part 141 and the second door panel 103.

[0121] By setting a first fixed sheet metal part 141 and a first fireproof expansion strip 142 on the inner side of the first door panel 103, the fire door can be opened and closed normally, and flames can be prevented from spraying out from the gap between the first door panel 103 and the second door panel 103 when the fire door is closed, thereby improving the fire resistance of the container.

[0122] like Figure 1 As shown, an embodiment of this utility model also provides a container 100, including: a fireproof door for a container as described in any of the above embodiments. The fireproof door can be installed on the side wall of the container 100 or at the end of the container 100.

[0123] In one implementation, such as Figure 2 , Figure 5 As shown, container 100 also includes:

[0124] The door frame is installed on the container body of the container 100; the door frame is specifically composed of a combination of a column 104, a part of the bottom side beam 101, and a part of the top side beam 102.

[0125] The second fixed sheet metal part 107 is disposed on the inner side of the door frame and extends toward the interior of the door frame;

[0126] The second fireproof expansion strip 108 is disposed on the second fixed sheet metal part 107. When the fire door is closed, the second fireproof expansion strip 108 is tightly attached to the door panel 103 to seal the gap between the second fixed sheet metal part 107 and the door panel 103.

[0127] By installing a second fixed sheet metal part 107 and a second fireproof expansion strip 108 on the inside of the door frame, the fire door can be opened and closed normally, and flames can be prevented from spraying out from the gap between the door panel 103 and the door frame when the fire door is closed, thereby improving the fire resistance of the container.

[0128] In one implementation, such as Figure 2 , Figure 5 As shown, container 100 also includes:

[0129] The fireproof layer 106 inside the box is located on the inside of the door frame and the inside of the second fixed sheet metal part 107.

[0130] By setting the fireproof layer 106 inside the container, the heat inside the container can be effectively prevented from being conducted to the outside of the container through the uprights 104, bottom side beams 101, and top side beams 102, thus further improving the fire resistance of the container 100.

[0131] In one implementation, such as Figure 2 , Figure 5As shown, the interior of the uprights 104, bottom side beams 101, and top side beams 102 can also be filled with fireproof materials, such as flexible fireproof materials like ceramic wool and rock wool, which can effectively prevent heat inside the container from being conducted to the outside of the container through the uprights 104, bottom side beams 101, and top side beams 102, further improving the fire resistance of the container 100.

[0132] According to this utility model, a fireproof door for a shipping container and the container itself are designed. By setting a heat-insulating gap between the inner and outer skin of the door panel, the inner and outer skins are not in direct contact, thus blocking the heat conduction path between the inner and outer sides of the door panel. This significantly improves the thermal resistance of the fireproof door, effectively preventing heat from the inside of the container from being transferred to the outside, thereby improving the fire resistance performance of the container and meeting the A60 fire protection standard. When a fire occurs inside the container, the flames and high temperatures are contained within the container and will not affect the outside of the container.

[0133] The processes and steps described in all the preferred embodiments above are merely examples. Unless adverse effects occur, various processing operations can be performed in a different order than those described above. The order of steps in the above process can also be added, combined, or deleted according to actual needs.

[0134] In understanding the scope of this utility model, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of the described features, elements, components, groups, integrals, and / or steps, but do not exclude the presence of other undescribed features, elements, components, groups, integrals, and / or steps. This concept also applies to words with similar meanings, such as the terms "comprising," "having," and their derivatives.

[0135] The term "attached" or "joined" as used herein includes: a construction in which one element is directly fixed to another element by fixing it directly to another element; a construction in which one element is indirectly fixed to another element by fixing it to an intermediate member, which in turn is fixed to another element; and a construction in which one element is integral with another element, that is, one element is substantially part of another element. This definition also applies to words with similar meanings, such as "connect," "joint," "couple," "install," "adhere," "fix," and their derivatives. Finally, degree terms such as "substantially," "approximately," and "approximately" as used herein indicate the amount of deviation from which modifications to the terminology do not significantly alter the final result.

[0136] 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.

[0137] This utility model 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 this utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model.

Claims

1. A fireproof door for containers, characterized in that, Includes at least one door panel (103), said door panel (103) comprising: Door panel outer skin (131), the door panel outer skin (131) is disposed on the outside of the door panel (103); Door panel inner skin (132), the door panel inner skin (132) is disposed on the inner side of the door panel (103); A reinforcing beam is provided on the outer skin (131) of the door panel, and the inner skin (132) of the door panel is fixedly connected to the reinforcing beam by fasteners (109). There is a heat insulation gap (139) between the inner skin (132) of the door panel and the outer skin (131) of the door panel.

2. The fireproof door for containers according to claim 1, characterized in that, The door panel (103) also includes: The first fireproof layer (135) is disposed close to the inner side of the outer skin (131) of the door panel and the inner side of the inner skin (132) of the door panel, and extends to the space between the reinforcing beam and the inner skin (132) of the door panel.

3. The fireproof door for containers according to claim 2, characterized in that, The door panel (103) also includes: The second fireproof layer (136) is provided where the first fireproof layer (135) wraps around the second fireproof layer (136).

4. The fireproof door for containers according to claim 3, characterized in that, The first fireproof layer (135) is a magnesium oxide board or a calcium silicate board, and the second fireproof layer (136) is ceramic wool or rock wool.

5. The fireproof door for containers according to claim 1, characterized in that, The reinforcing beam includes: A reinforcing beam is provided along the width direction of the outer skin (131) of the door panel; A reinforcing vertical beam (138) is provided along the height direction of the outer skin (131) of the door panel, and the two ends of the reinforcing horizontal beam are fixedly connected to the reinforcing vertical beam (138).

6. The fireproof door for containers according to claim 5, characterized in that, The reinforcing beam includes: The first reinforcing crossbeam (133) is disposed at the upper and lower ends of the door panel skin (131); The second reinforcing crossbeam (134) is located in the middle of the outer skin (131) of the door panel.

7. The fireproof door for containers according to claim 5, characterized in that, The cross-sectional shape of the reinforcing beam is C-shaped or U-shaped; The cross-sectional shape of the reinforcing vertical beam (138) is C-shaped, U-shaped, or Z-shaped.

8. The fireproof door for a container according to claim 5, characterized in that, The reinforcing crossbeam and the reinforcing vertical beam (138) are respectively welded and fixed to the outer skin of the door panel (131).

9. The fireproof door for a container according to claim 1, characterized in that, The fastener (109) includes: Bolts, which connect the inner skin of the door panel (132) and the reinforcing beam; A nut, which connects to the bolt and is disposed inside the reinforcing beam; A heat insulation pad (112) is disposed on the bolt and is tightly attached to the reinforcing beam under the limiting position of the nut.

10. The fireproof door for a container according to claim 9, characterized in that, The heat insulation pad (112) is a ceramic sheet.

11. The fireproof door for a container according to claim 1, characterized in that, The edge of the outer skin (131) of the door panel is provided with a first folded edge (143), the edge of the inner skin (132) of the door panel is provided with a second folded edge (144), the heat insulation gap (139) is provided between the first folded edge (143) and the second folded edge (144), and fireproof adhesive (137) is provided in the heat insulation gap (139).

12. The fireproof door for a container according to claim 1, characterized in that, Also includes: A waterproof sealing strip (110) is provided on the periphery of the door panel (103).

13. The fireproof door for a container according to claim 1, characterized in that, Also includes: The first fixed sheet metal part (141) is disposed on the inner side of the first door panel (103) and near the edge. The length of the first fixed sheet metal part (141) is not less than the length of the door panel (103). The width of the first fixed sheet metal part (141) is greater than the gap between the first door panel (103) and the second door panel (103) when the fire door for the container is closed. A first fire-resistant expansion strip (142) is disposed on the first fixed sheet metal part (141). When the fire door for the container is closed, the first fire-resistant expansion strip (142) is in close contact with the second door panel (103) to seal the gap between the first fixed sheet metal part (141) and the second door panel (103).

14. A container, characterized in that, include: The fireproof door for containers according to any one of claims 1-13.

15. The container according to claim 14, characterized in that, Also includes: A door frame, which is installed on the container body; The second fixed sheet metal part (107) is disposed on the inner side of the door frame and extends toward the interior of the door frame; The second fire-resistant expansion strip (108) is disposed on the second fixed sheet metal part (107). When the fire door for the container is closed, the second fire-resistant expansion strip (108) is in close contact with the door panel (103) to seal the gap between the second fixed sheet metal part (107) and the door panel (103).

16. The container according to claim 15, characterized in that, Also includes: The fireproof layer (106) inside the box is disposed on the inner side of the door frame and the inner side of the second fixed sheet metal part (107).

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