Door frame structure of open top box

Abstract

The utility model discloses an open top box door frame structure which comprises an open top type container, a movable lintel and a fixed lintel which are connected through a hinge are arranged at the top of the open top type container, a lower beam and a door cross beam are arranged at the bottom end of the open top type container, the front end of the lower beam is of a C-shaped structure, an opening of the lower beam faces backwards, and the middle section of the lower beam is of a slope structure. The rear end of the lower beam is of an L-shaped structure, the transverse length of the lower beam is larger than that of the movable lintel, and the height of the rear end of the middle section of the lower beam is larger than that of the front end of the middle section of the lower beam. Only the bottom structure of the open top container is changed, the in-box extension length of the lower beam is adjusted to be larger than the in-box extension length of the movable lintel, then the tail end of the lower beam is corrected to be of a plane butt joint structure flush with the floor, the situation that seepage water reaches the interior of the container body is effectively reduced, and the seepage water is directly guided and discharged on the slope of the lower beam; meanwhile, the area of the floor in the box is reduced, the number of wood floors needing to be laid is smaller, and the overall transverse structural strength of the box body is better.

Description

Technical Field

[0001] This utility model relates to the field of open-top container technology, and more specifically, to an open-top container door frame structure. Background Technology

[0002] Specialty containers are specialized containers used for loading oversized and overweight cargo. Their weight, dimensions, and carrying capacity often exceed those of standard 20-foot or 40-foot containers. Specialty containers are mainly categorized as follows: refrigerated containers for cold chain transportation; open-top containers for transporting objects with height restrictions; frame containers for transporting goods exceeding normal dimensions; tank containers for transporting liquid chemicals; and garment containers for transporting clothing. Open-top containers generally lack a fixed rigid roof, using tarpaulins or plastic sheets as a tent. They are suitable for loading goods exceeding the maximum height limit of containers, such as glass panels and steel products. Later developments included folding hinged-top containers for easier loading and unloading of large cargo.

[0003] Open-top containers allow loading and unloading from the top or doors. To enhance the container's strength, the top typically features both movable and fixed lintels extending laterally along the container's sides. These lintels are hinged together. However, this structure creates gaps at the top, making leaks possible. Water seeps along the lintels to the door beams, accumulating and potentially contaminating or damaging the cargo if not drained promptly. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an open-top box door frame structure to solve one or more of the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An open-top container door frame structure includes an open-top container. The top of the open-top container is provided with a hinged movable lintel and a fixed lintel. The bottom of the open-top container is provided with a lower beam and a door crossbeam. The front end of the lower beam has a C-shaped structure and opens to the rear. The middle section of the lower beam has a sloping structure. The rear end of the lower beam has an L-shaped structure. The lateral length of the lower beam is greater than the lateral length of the movable lintel.

[0007] Furthermore, sealing strips are provided between the movable lintel and the fixed lintel, and between the lower beam and the door crossbeam.

[0008] Furthermore, the height of the rear end of the middle section of the lower beam is greater than the height of the front end of the middle section of the lower beam.

[0009] Furthermore, the junction of the front end and the middle section of the lower beam has a sunken stepped structure.

[0010] Furthermore, a sealing strip is provided between the movable lintel and the fixed lintel, and at the step structure, and the sealing strip is located between the lower beam and the door crossbeam.

[0011] Furthermore, the rear end face of the lower beam is connected to the floor of the open-top container, and the height of the floor is not lower than the highest point of the rear end face of the lower beam.

[0012] In summary, this utility model has the following beneficial effects: by only changing the bottom structure of the open-top container, first adjusting the inner extension length of the lower beam to be greater than the inner extension length of the movable door lintel, and then modifying the end of the lower beam to a plane docking structure flush with the floor, the situation of water seepage reaching the inside of the container is effectively reduced, and the water is directly guided and discharged on the slope of the lower beam. At the same time, the area of ​​the floor inside the container is reduced, less wood flooring is required, and the overall lateral structural strength of the container is also better. Attached Figure Description

[0013] Figure 1 A schematic diagram of one embodiment of this utility model;

[0014] Figure 2 A schematic diagram of the existing method provided by this utility model;

[0015] Figure 3 A schematic diagram of another embodiment of this utility model.

[0016] In the diagram: 1. Movable lintel; 2. Fixed lintel; 3. Lower beam; 4. Door crossbeam; 5. Sealing strip. Detailed Implementation

[0017] Example 1:

[0018] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below.

[0019] Existing open-top box door frame structure, such as Figure 2As shown, the main body is an open-top container. The top of the container has a movable lintel 1 and a fixed lintel 2, connected by hinges, allowing the movable lintel 1 to move relative to the container. A pivot-type container top cover or a plastic sheet or canvas can be installed between the front and rear movable lintels 1. The bottom of the open-top container has a connecting lower beam 3 and a door crossbeam 4. Both the lower beam 3 and the movable lintel 1 extend inwards, with the lateral extension of the movable lintel 1 being greater than that of the lower beam 3. Separate sealing strips 5 are provided between the movable lintel 1 and the fixed lintel 2, and between the lower beam 3 and the door crossbeam 4. The front end of the lower beam 3 has a C-shaped structure with a rearward opening; the middle section of the lower beam 3 has a sloping structure and is relatively short; the rear end of the lower beam 3 has a sunken step structure, with the step groove connecting to the floor of the open-top container. The drawback of this conventional structure is that the total lateral length of the lower beam 3 is less than the lateral length of the movable lintel 1. There are obvious gaps between the lower beam 3 and the horizontal door beam, between the lower beam 3 and the floor, and between the movable lintel 1 and the fixed lintel 2. Although sealing strips 5 are added in two of these places, the water that seeps in flows along the columns and inner walls to the lower beam 3 and converges into the container, causing pollution or damage to the goods inside the open-top container.

[0020] The open-top box door frame structure provided in this application, such as Figure 1 As shown, the structures of the top movable lintel 1 and fixed lintel 2 are identical, as are the sealing strips 5. The lower beam 3 has been improved. The front end of the lower beam 3 remains a C-shaped structure with a rearward opening; the middle section of the lower beam 3 remains a sloping structure with its length extended; the rear end of the lower beam 3 is a drooping L-shaped structure; the overall lateral length of the lower beam 3 is greater than the lateral length of the movable lintel 1, and the height of the rear end of the middle section of the lower beam 3 is greater than the height of the front end of the middle section. Preferably, the rear end face of the lower beam 3 is fixedly connected to the floor of the open-top container, and the height of the floor is not lower than the highest point of the rear end face of the lower beam 3. This makes the gap between the floor and the lower beam 3 negligible. Water seeping from the movable lintel 1 falls directly onto the lower beam 3 instead of the floor and is guided out of the container by the slope, significantly improving water seepage. Due to the improved length of the lower beam 3, the corresponding floor material input is also relatively reduced, resulting in better overall structural strength.

[0021] Example 2:

[0022] Another schematic diagram of the open-top box door frame structure provided in this application is shown below. Figure 3 As shown, the difference from Embodiment 1 is that the junction of the front end and middle section of the lower beam 3 has a sunken step structure, and the sealing strip 5 between the lower beam 3 and the door crossbeam 4 is changed to be set at the step structure, so that the outward drainage of seepage water is guided faster and better.

[0023] It should be noted that this specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An open-top container door frame structure, comprising an open-top container, wherein the top of the open-top container is provided with a hinged movable lintel (1) and a fixed lintel (2), and the bottom of the open-top container is provided with a lower beam (3) and a door crossbeam (4), characterized in that: The front end of the lower beam (3) is a C-shaped structure with an opening facing backward. The middle section of the lower beam (3) is a sloping structure. The rear end of the lower beam (3) is an L-shaped structure. The lateral length of the lower beam (3) is greater than the lateral length of the movable lintel (1).

2. The open-top box door frame structure according to claim 1, characterized in that: A sealing strip (5) is provided between the movable lintel (1) and the fixed lintel (2), and between the lower beam (3) and the door crossbeam (4).

3. The open-top box door frame structure according to claim 1, characterized in that: The height of the rear end of the middle section of the lower beam (3) is greater than the height of the front end of the middle section of the lower beam (3).

4. The open-top box door frame structure according to claim 1, characterized in that: The lower beam (3) has a sunken step structure at the intersection of the front end and the middle section.

5. The open-top box door frame structure according to claim 4, characterized in that: A sealing strip (5) is provided between the movable lintel (1) and the fixed lintel (2) and at the step structure. The sealing strip (5) is located between the lower beam (3) and the door crossbeam (4).

6. The open-top box door frame structure according to claim 1, characterized in that: The rear end face of the lower beam (3) is connected to the floor of the open-top container, and the height of the floor is not lower than the highest point of the rear end face of the lower beam (3).

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