Locking structure of a combined box bottom side beam

Abstract

This utility model discloses a locking structure for the bottom side beams of a modular container. The modular container is composed of at least two containers tightly joined together and internally connected. The locking structure is located in the joint between the bottom side beams of two adjacent containers. The locking structure includes a connecting plate, connecting bolts, a pressure plate, nuts, and limiting blocks. The connecting bolts are set on the connecting plate and form an inverted "T" shape with the connecting plate. During installation, the connecting bolts pass upward through the joint. The pressure plate has an assembly hole in the middle for the connecting bolts to pass through, and the two ends of the pressure plate are respectively pressed onto the top of the bottom side beams on both sides. Nuts are assembled on the top of the connecting bolts to lock the pressure plate. Limiting blocks are set on the top of the bottom side beams, forming a limiting gap in pairs. The beneficial effects of this utility model are: this technical solution solves the problem of difficult relocation caused by welding fixation of the bottom side beams of the modular container through a modular locking structure design, while taking into account connection strength, assembly flexibility, and long-term stability.

Description

Technical Field

[0001] This utility model relates to the field of container technology, and in particular to a locking structure for the bottom side beam of a combined container. Background Technology

[0002] Modular container houses, as a scalable and modular warehousing facility, are widely used in large temporary warehouses, logistics transit centers, and other similar scenarios. They are typically constructed by joining multiple shipping containers together, creating a continuous storage space. In the structural design of modular container houses, the bottom side beams are key components supporting the weight of the container; their connection method directly affects the overall stability and ease of maintenance.

[0003] Traditional modular container houses primarily rely on foundation supports at both ends for fixing their bottom side beams. However, in practical applications, some scenarios (such as temporary sites or irregular terrain) often lack foundation support in the middle of the bottom side beams. To ensure the overall structural strength of the modular container house, existing technologies typically use welding to directly fix adjacent bottom side beams together. However, this welding method has significant drawbacks: when the modular container house needs to be moved or relocated, the welded parts must be disassembled using destructive methods such as cutting. This is not only cumbersome and time-consuming, but also damages the bottom side beam structure, increasing relocation costs and the difficulty of subsequent repairs.

[0004] In addition, the welding process requires high processing precision. If there are deviations in the welding position or size, the bottom side beams may not be evenly spliced, affecting the overall stability of the modular box. At the same time, the number or position of the welded bottom side beams (001) cannot be flexibly adjusted according to actual needs, which limits the modular expansion capability of the modular box.

[0005] Therefore, it is necessary to develop a detachable, high-strength, and flexible assembly locking structure for the bottom side beam of the combined box. After searching, no technical solution identical to this utility model was found. Utility Model Content

[0006] The main technical problem solved by this utility model is to provide a locking structure for the bottom side beam of a combined box, thereby solving one or more of the above-mentioned prior art problems.

[0007] To solve the above-mentioned technical problems, the present invention adopts a locking structure for the bottom side beams of a modular container. The modular container is composed of at least two containers tightly joined together and internally connected. The locking structure is set in the joint between the bottom side beams of two adjacent containers. Its innovation lies in the following: the locking structure includes a connecting plate, connecting bolts, a pressure plate, nuts, and limiting blocks; the connecting bolts are set on the connecting plate and form an inverted "T" shape with the connecting plate; during installation, the connecting bolts pass upwards from between the joints; the pressure plate has an assembly hole in the middle for the connecting bolts to pass through, and both ends of the pressure plate are pressed against the tops of the bottom side beams on both sides; the nuts are assembled on the tops of the connecting bolts to lock the pressure plate; the limiting blocks are set on the tops of the bottom side beams, forming a limiting gap in pairs, the width of which is greater than the width of the pressure plate, allowing the ends of the pressure plates to be embedded to restrict their rotation.

[0008] In some implementations, the connecting bolts and the connecting plate are fixed together by welding.

[0009] In some implementations, the number of locking mechanisms installed in the seam is no less than two, and the specific number is adjusted according to the length of the box and the load requirements.

[0010] In some implementations, the width of the limiting gap is 0.5-2 mm larger than the width of the pressure plate to allow for dimensional tolerances when welding limiting blocks to individual housings.

[0011] In some implementations, the width of the connecting plate is smaller than the width of the seam, and during installation, it can be passed through the seam from bottom to top, or passed through the seam from top to bottom and then rotated 90° for positioning.

[0012] In some implementations, a lock nut is used to enhance the stability of the locking structure.

[0013] The beneficial effects of this utility model are: This technical solution solves the problem of relocation difficulties caused by welding fixation of the bottom side beam of the combined box through modular locking structure design, while taking into account connection strength, assembly flexibility and long-term stability, and has significant practical value and promotion significance. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0015] Figure 1 This is a schematic diagram of the assembled structure of the locking structure of the bottom side beam of the combined box according to this utility model.

[0016] Figure 2 This is a top view of the assembled locking structure of the bottom side beam of the combined box according to this utility model. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] This utility model embodiment includes: a locking structure for the bottom side beams of a modular container, suitable for a through-type modular container formed by at least two containers tightly joined together. It achieves a reliable connection of the bottom side beams (001) of adjacent containers through a detachable locking mechanism, solving the problem of relocation difficulties caused by traditional welding methods. The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1 and Figure 2 The locking structure shown mainly consists of a connecting plate 100, connecting bolts 200, pressure plate 300, nut 400, and limiting block 500.

[0020] The connecting plate 100 is a rectangular steel plate with a thickness of 8-12mm (the specific thickness depends on the load-bearing capacity of the box). Its width is slightly smaller than the joint width of the bottom side beam 001 (for example, when the joint width is 50mm, the width of the connecting plate 100 is 45mm), so that it can be inserted from the bottom of the joint upwards or from the top downwards and then rotated 90° for positioning during installation. The connecting bolt 200 is an M16-M20 high-strength bolt (material is 45# steel), which is vertically welded to the middle of the connecting plate 1001, forming an inverted "T" shape with the connecting plate 100. The advantage of this structural design is that the connecting plate 100 can support the two bottom side beams 001 from the bottom, preventing the bottom side beams 001 from sinking due to lack of foundation support. After the inverted "T" shaped connecting bolt 200 passes upwards through the joint, it provides a fixed support point for the pressure plate 300 and the nut 400, achieving a locking effect of clamping from the top and bottom.

[0021] The pressure plate 300 is a rectangular steel plate (6-10mm thick, with its length covering the top edge of the bottom side beams 001 on both sides). It has an assembly hole in the center that matches the connecting bolt 200 (the diameter of the hole is 1-2mm larger than the outer diameter of the bolt for easy assembly). During installation, after the connecting bolt 200 passes through the joint, the pressure plate 300 is fitted onto the top of the bolt, so that both ends of the pressure plate 300 press against the top of the bottom side beams 001 on both sides (covering the top edge of the bottom side beams 001 by 30-50mm). Then, the nuts 400 (preferably anti-loosening nuts, such as double nuts or nylon insert anti-loosening nuts) are tightened, causing the connecting plate 100 to press upwards against the bottom of the bottom side beam 001, and the pressure plate 300 to press downwards against the top of the bottom side beam 001, forming a two-way locking force of "bottom support + top compression," ensuring that the two bottom side beams 001 are tightly connected as a whole.

[0022] The limiting block 500 is an L-shaped or rectangular steel block (8-10mm thick), symmetrically welded to both sides of the top of the bottom side beam 001 (two in each group), forming a limiting gap between each pair; the width of the limiting gap is 0.5-2mm larger than the width of the pressure plate 300 (for example, when the width of the pressure plate 300 is 80mm, the gap width is 81-82mm), allowing the end of the pressure plate 300 to be embedded in the gap; the advantages of this design are: firstly, it restricts the rotation of the pressure plate 300 during the tightening of the nut 400, ensuring that the pressure plate 300 is always aligned with the top of the bottom side beam 001; secondly, it allows for dimensional errors (such as welding position deviation ±1mm) when welding the limiting block 500 to a single box, avoiding assembly failure due to machining accuracy issues, and improving the adaptability of the locking structure.

[0023] Installation process: After the two containers are spliced ​​together, first, insert the assembly of connecting plate 100 and connecting bolt 200 (welded as one piece) from the bottom of the joint of the bottom side beam 001 upwards (if the width of connecting plate 100 is small, it can also be inserted from top to bottom into the joint and rotated 90° so that the connecting plate 100 horizontally supports the bottom of the bottom side beam 001); then, put the pressure plate 300 on top of the connecting bolt 200, adjust the position of the pressure plate 300 so that its two ends press against the top of the bottom side beams 001 on both sides; tighten the pressure plate 300 with nuts 400 so that the connecting plate 100 and the pressure plate 300 together clamp the bottom side beam 001, and finally cover the joint with the joint cover plate and fix it with self-tapping screws to complete the locking.

[0024] The advantages of this technical solution are:

[0025] Disassembly: Mechanical locking is achieved through a combination of bolts, pressure plate 300 and nut 400, replacing the traditional welding process. During relocation, only nut 400 needs to be removed to separate the box, significantly reducing the difficulty of relocation.

[0026] High-strength connection: No less than 2 locking mechanisms are set between the 001 joints of each bottom side beam (the specific number can be increased to 4-6 depending on the length of the box and the load requirements). Through the superposition of multiple sets of locking forces, the overall structural strength of the combined box is ensured.

[0027] Assembly tolerance: The gap width of the limit block 500 is greater than the width of the pressure plate 300, which allows for dimensional errors when welding the limit block 500, avoiding assembly failure due to processing deviations and improving production efficiency;

[0028] Enhanced stability: The use of anti-loosening nut 400 effectively prevents the nut 400 from loosening due to vibration of the housing, and can maintain a reliable locking state even after long-term use.

[0029] In summary, this utility model solves the problem of relocation difficulties caused by welding fixation of the bottom side beam 001 of the combined box through a modular locking structure design, while taking into account connection strength, assembly flexibility and long-term stability, and has significant practical value and promotion significance.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A locking structure of a combined bottom side sill of a container, the combined container being formed by at least two containers being combined with each other and being internally through, the locking structure being provided in a joint between bottom side sills (001) of the adjacent two containers, characterized in that: The locking structure includes a connecting plate (100), a connecting bolt (200), a pressure plate (300), a nut (400), and a limiting block (500). The connecting bolt (200) is set on the connecting plate (100) and forms an inverted "T" shape with the connecting plate (100). During installation, the connecting bolt (200) passes upward from between the joints. The pressure plate (300) has an assembly hole in the middle for the connecting bolt (200) to pass through. The two ends of the pressure plate (300) are respectively pressed onto the top of the bottom side beams (001) on both sides. The nut (400) is assembled on the top of the connecting bolt (200) to lock the pressure plate (300). The limiting block (500) is set on the top of the bottom side beam (001), forming a limiting gap in pairs. The width of the limiting gap is greater than the width of the pressure plate (300), allowing the end of the pressure plate (300) to be embedded to restrict its rotation. ​ 2. The locking structure for the bottom side beam of a combined box according to claim 1, characterized in that: The connecting bolts (200) and the connecting plate (100) are fixed together by welding.

3. The locking structure for the bottom side beam of a combined box according to claim 1, characterized in that: The number of locking mechanisms installed in the joint shall not be less than two, and the specific number shall be adjusted according to the length of the box and the load requirements.

4. The locking structure for the bottom side beam of a combined box according to claim 1, characterized in that: The width of the limiting gap is 0.5-2mm larger than the width of the pressure plate (300) to allow for dimensional tolerances when welding the limiting block (500) to a single box.

5. The locking structure for the bottom side beam of a combined box according to claim 1, characterized in that: The width of the connecting plate (100) is smaller than the width of the seam. During installation, it can be passed through the seam from bottom to top, or passed through the seam from top to bottom and then rotated 90° for positioning.

6. The locking structure for the bottom side beam of a combined box according to claim 1, characterized in that: The nut (400) is a lock nut (400) to enhance the stability of the locking structure.

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