Combined rectangular tube and manufacturing method thereof

Abstract

The present invention provides a combined rectangular tube and a manufacturing method thereof, wherein the combined rectangular tube includes a C-shaped plate component constructed by a main web, an upper V-shaped wing plate and a lower V-shaped wing plate; the upper V-shaped wing plate is arranged at the upper end of the main web, and the lower V-shaped wing plate is arranged at the lower end of the main web, and both the upper V-shaped wing plate and the lower V-shaped wing plate face one side of the main web; the two C-shaped plate components are buckled together, and the upper V-shaped wing plates and the lower V-shaped wing plates of the two C-shaped plate components are cleverly overlapped to form a stronger connection support structure for the upper end face and the lower end face, thereby significantly improving the overall strength and stability of the sealed tube, and avoiding the problem of low structural strength in the traditional assembly method. The combined rectangular tube shows significant advantages in improving construction efficiency, reducing costs and improving structural performance, and has broad application prospects and market potential.

Description

Technical Field

[0001] The present invention relates to the technical field of building panels, and in particular to a combined rectangular tube and a manufacturing method thereof. Background Art

[0002] Prefabricated construction is a method of prefabricating building panels in a factory and then transporting them to the construction site for installation. As a result, modular structural components are becoming more and more popular and widely used.

[0003] At present, the assembly connections between structural parts are prone to gaps, low structural strength, and the inability to guarantee overall support strength. Usually, the material thickness is directly increased at the joints, or additional reinforcement processing is performed, which greatly increases the workload. Moreover, the connection is not smooth enough, the adaptability is insufficient, and it is difficult to meet the use requirements in the construction field. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a combined rectangular tube and a manufacturing method thereof to solve the above problems.

[0005] The present invention adopts the following scheme:

[0006] The present application provides a combined rectangular tube, comprising a C-shaped plate member constructed by a main web, an upper V-shaped wing plate and a lower V-shaped wing plate; the upper V-shaped wing plate is arranged at the upper end of the main web, and the lower V-shaped wing plate is arranged at the lower end of the main web, and both the upper V-shaped wing plate and the lower V-shaped wing plate face one side of the main web; two C-shaped plate members are buckled together, one of the C-shaped plate members is flipped 180 degrees and then plugged into the other C-shaped plate member, and the upper V-shaped wing plate of one C-shaped plate member is fixed to the upper end of the main web. The wing plate and the lower V-shaped wing plate of another C-shaped plate member are back to back, the lower V-shaped wing plate of one C-shaped plate member and the upper V-shaped wing plate of the other C-shaped plate member are back to back, and the main webs of the two C-shaped plate members are opposite to each other on different horizontal planes; the two V-shaped wing plates are further pressed from top to bottom to overlap each other to form the upper plate of the rectangular tube, and the two V-shaped wing plates are further pressed from bottom to top to overlap each other to form the lower plate of the rectangular tube, and the two side plates are stacked and fixed until they are opposite to each other on the same horizontal plane to form a whole rectangular tube.

[0007] As a further improvement, the specifications of the two C-shaped plate members are consistent, and the C-shaped plate members are in the shape of open strips to facilitate the mutual insertion and superposition of the two.

[0008] As a further improvement, the thickness of the C-shaped plate member ranges from 0.6 mm to 4 mm; the height of the main web is 100 mm to 350 mm, and the width of the upper plate and the lower plate of the main web is more than 90 mm.

[0009] As a further improvement, the width of the upper V-shaped wing plate is consistent with the width of the upper plate, and the width of the lower V-shaped wing plate is consistent with the width of the lower plate.

[0010] As a further improvement, the bending angle is limited to between 30° and 45°.

[0011] As a further improvement, the C-shaped plate member is formed into a main web, an upper V-shaped wing plate and a lower V-shaped wing plate in sequence through multiple cold bending processes.

[0012] As a further improvement, after being stacked and fixed, the V-shaped wing plates on the upper plate or the lower plate are arranged horizontally spaced apart from each other.

[0013] As a further improvement, the upper V-shaped wing plate and the portion corresponding to the upper plate are both provided with groove portions, and the lower V-shaped wing plate and the portion corresponding to the lower plate are both provided with groove portions, and the groove portions are used for riveting external bolts and countersunking.

[0014] As a further improvement, the bolt members are successively passed through the upper V-shaped wing plate and the lower V-shaped wing plate fixed to the upper plate from top to bottom, or the bolt members are successively passed through the upper V-shaped wing plate and the lower V-shaped wing plate fixed to the lower plate from bottom to top, and the heads of the bolt members are smoothly aligned with their respective composite plates.

[0015] The present application further provides a manufacturing method, which is applied to the aforementioned combined rectangular tube, comprising the following steps:

[0016] S1: Select two C-shaped plate components of the same specifications and form the main web, upper V-shaped flange and lower V-shaped flange in sequence through simultaneous cold bending;

[0017] S2: Flip one C-shaped plate member 180° and insert it into another C-shaped plate member, insert a pre-forming mandrel mold between the two C-shaped plate members, and push the two C-shaped plate members to be completely placed on the mandrel mold;

[0018] S3: First, the two V-shaped wing plates are pressed from top to bottom to be deformed and fastened on the upper end surface of the core shaft mold, and then the two V-shaped wing plates are further pressed from bottom to top to be deformed and fastened on the lower end surface of the core shaft mold to obtain a rectangular tube.

[0019] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0020] 1. The combined rectangular tube of the present application cleverly overlaps the upper V-shaped wing plate and the lower V-shaped wing plate of the two C-shaped plate components to form a more solid connection support structure between the upper and lower end surfaces, thereby significantly improving the overall strength and stability of the sealed tube and avoiding the problem of low structural strength in traditional assembly methods. The combined rectangular tube shows significant advantages in improving construction efficiency, reducing costs and improving structural performance, and has broad application prospects and market potential.

[0021] 2. During the assembly process, there is no need to increase the material thickness or perform reinforcement processing, which effectively reduces the use and waste of materials, and reduces production and construction costs. The prefabricated V-shaped wing panel design makes on-site installation more convenient, reduces the dependence on high-precision processing and complex construction technology, improves construction efficiency, and shortens the construction period.

[0022] 3. The upper V-shaped wing plate and the lower V-shaped wing plate are overlapped and fixed to each other to ensure the smoothness and adaptability of the connection. The back-to-back design of the V-shaped wing plates increases the deformation resistance of the sealing pipe, which can better cope with external loads and environmental changes, and improve the durability and service life of the structure. Therefore, a reasonable plate connection method is adopted to make the sealing pipe have better shear resistance, bending resistance, and especially compressive resistance, which is suitable for a variety of complex building application scenarios and meets the needs of modern buildings for high-performance structural parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the process of stacking and fixing two prefabricated panels to form a rectangular tube according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the middle rectangular tube;

[0025] Figure 3 1 is a schematic structural diagram of a C-shaped plate member of a rectangular tube according to an embodiment of the present invention;

[0026] Figure 4 yes Figure 3 Schematic diagram of the structure from other perspectives;

[0027] Figure 5 1 is a schematic structural diagram of a groove portion of a prefabricated plate of a rectangular tube according to an embodiment of the present invention;

[0028] Figure 6 2 is a schematic structural diagram of a rectangular tube according to an embodiment of the present invention;

[0029] Figure 7 yes Figure 6 sectional view of

[0030] Figure 8 It is a flowchart of a manufacturing method according to an embodiment of the present invention.

[0031] Icon: 1-C-type plate component; 2-main web; 3-upper V-shaped wing plate; 4-lower V-shaped wing plate; 5-upper plate; 6-lower plate; 7-groove part; 8-bolt part. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0033] Example

[0034] Combine Figures 1 to 7 This embodiment provides a combined rectangular tube, comprising a C-shaped plate member 1 constructed from a main web 2, an upper V-shaped wing plate 3, and a lower V-shaped wing plate 4. The upper V-shaped wing plate 3 is disposed at the upper end of the main web 2, and the lower V-shaped wing plate 4 is disposed at the lower end of the main web 2. Both the upper V-shaped wing plate 3 and the lower V-shaped wing plate 4 are oriented toward one side of the main web 2 (both extend obliquely upward).

[0035] Among them, two of the C-shaped plate components 1 are interlocked and embraced together, one of the C-shaped plate components 1 is flipped 180° and then inserted and overlapped into the other C-shaped plate component 1, the upper V-shaped wing plate of one C-shaped plate component 1 and the lower V-shaped wing plate of the other C-shaped plate component 1 are back to back, the lower V-shaped wing plate of one C-shaped plate component 1 and the upper V-shaped wing plate of the other C-shaped plate component 1 are back to back, and the main webs 2 of the two C-shaped plate components 1 are opposite to each other on different horizontal planes.

[0036] Furthermore, the two V-shaped wing plates are further pressed from top to bottom to overlap each other to form an upper plate 5, and the two V-shaped wing plates are further pressed from bottom to top to overlap each other to form a lower plate 6. The two main webs 2 are stacked and fixed until they are opposite to each other on the same horizontal plane to form a whole rectangular tube.

[0037] It should be noted that splicing and stacking refers to the process of splicing and stacking two C-shaped sheet members 1 together in a specific manner to achieve a tight fit and form an integral structure. Specifically, in the manufacturing method of the modular rectangular tube described below, the specific steps of splicing and stacking are as follows: flipping one of the C-shaped sheet members 1 180 degrees to ensure that the two C-shaped sheet members 1 can properly fit together during splicing, and then plugging the flipped C-shaped sheet member 1 into the other C-shaped sheet member 1. At this time, the upper V-shaped wing plate 3 of one C-shaped sheet member 1 and the lower V-shaped wing plate 4 of the other C-shaped sheet member 1 are facing away from each other to ensure that they can fit together.

[0038] Moreover, after being overlapped, an upper plate four times thicker is formed on the upper end surface of the rectangular tube, and a lower plate four times thicker is formed on the lower end surface, thereby significantly improving the supporting characteristics of the entire frame.

[0039] like Figure 1 、 Figure 2 and Figure 6 As shown, in this embodiment, the specifications of the two C-shaped plate members 1 are consistent, and the C-shaped plate members 1 are in the form of open strips, so that the two can be plugged in and overlapped with each other. Among them, by having an opening at both ends, the C-shaped plate members 1 can be smoothly plugged in and overlapped, ensuring the tightness of the connection and improving the overall strength and stability of the sealed tube. The open design and precise pressing process ensure the smoothness and adaptability of the connection, avoiding the problems of uneven connection and insufficient adaptability in traditional connection methods. In particular, the consistent specifications and synchronized molding processes of the C-shaped plate members 1 simplify the production process, improve production efficiency, and are suitable for large-scale industrial production.

[0040] Preferably, the thickness of the C-shaped plate member 1 ranges from 0.6 mm to 4 mm. The side plate height of the main web 2 is 100 mm to 350 mm, preferably 150 mm, 200 mm or 250 mm, and the width of the upper plate 5 and the lower plate 6 of the main web 2 is 90 mm or more. Thus, the plate thickness is between 0.6 mm and 4 mm, which ensures that the plate has sufficient strength and rigidity while being lightweight, and can withstand large loads and external forces. The diversity of the side plate height provides different options to adapt to different engineering needs, making the structural design more flexible. In addition, the standardized size design facilitates large-scale production and on-site installation, reduces processing and installation time, and improves construction efficiency.

[0041] Furthermore, the width of the upper V-shaped wing plate 3 is consistent with that of the upper plate 5, and the width of the lower V-shaped wing plate 4 is consistent with that of the lower plate 6. Thus, after being stacked and fixed, the upper and lower end faces of the rectangular tube are more strongly supported by the V-shaped wing plates and the plate body, respectively, with consistent widths. This not only enhances the structural strength and stability of the entire rectangular tube, but also simplifies the manufacturing and installation process, improves the overall aesthetics and functionality, and ensures that the rectangular tube can function efficiently and reliably in a variety of application scenarios.

[0042] In this embodiment, the bending angle is limited to between 30° and 45°. When the bending angle is 30°, the press-fitting and fastening of the V-shaped wing plate to the main web 2 is more efficient, and the internal stress therebetween is minimized, achieving the best fastening effect.

[0043] In this embodiment, the C-shaped plate member 1 is sequentially formed into the main web 2, upper V-shaped flange 3, and lower V-shaped flange 4 through multiple cold roll forming processes. The use of multiple cold roll forming processes to manufacture the main web 2, upper V-shaped flange 3, and lower V-shaped flange 4 significantly improves the precision and consistency of the finished product, enhances material strength and performance, reduces manufacturing defects, improves production efficiency and cost-effectiveness, optimizes structural design, and accommodates a variety of materials and thicknesses, particularly in the case of structural steel.

[0044] In this embodiment, after being laminated and fixed, the main web 2 and its V-shaped wing panels are horizontally spaced apart from each other. This further enhances structural stability, improves stress distribution, enhances structural performance, reduces structural weight, facilitates maintenance and overhaul, and provides flexible design and application space.

[0045] In this embodiment, the upper V-shaped wing plate 3 and the portion corresponding to the upper plate 5 are each provided with a groove 7, and the lower V-shaped wing plate 4 and the portion corresponding to the lower plate 6 are each provided with a groove 7. The grooves 7 are used to rivet and countersunk external bolts 8. It should be noted that the grooves 7 are used to lock the bolts 8, thereby more securely fastening the two C-shaped plate members 1 together. To prevent the bolts 8 from being exposed, the grooves 7 conceal the heads of the bolts 8.

[0046] Specifically, the bolts 8 are sequentially passed through the upper V-shaped wing plate 3 and the lower V-shaped wing plate (such as Figure 2 As shown, the upper plate 5 is located at the upper end of the rectangular tube. Alternatively, the bolts 8 are sequentially inserted from bottom to top through the upper V-shaped wing plate 3 and the lower V-shaped wing plate 4 (located at the lower end of the rectangular tube) and fixed to the lower plate 6 of the rectangular tube. The heads of the bolts 8 are smoothly aligned with the respective laminated plates. This not only enhances aesthetics but also ensures the flatness of the end surface, facilitating subsequent support.

[0047] In the above, a whole rectangular tube fixed by stacking two C-shaped plate members 1 has its upper and lower end faces pressed and fixed by multiple V-shaped wing plates and their upper and lower plates to form a support surface, which significantly improves the support strength. Moreover, under the same support strength, the rectangular tube formed by the V-shaped wing plates stacked and fixed on the main web 2 can reduce the steel consumption by 20% to 30%, which can greatly reduce the manufacturing cost.

[0048] Combine Figure 8 This embodiment further provides a manufacturing method, which is applied to the above-mentioned combined rectangular tube, comprising the following steps:

[0049] S1: Two C-shaped plate members 1 of the same specifications are selected and formed into a main web 2, an upper V-shaped wing plate 3 and a lower V-shaped wing plate 4 in sequence through simultaneous cold bending;

[0050] S2: Flip one C-shaped plate member 1 180° and insert it into another C-shaped plate member 1, insert a pre-forming mandrel mold between the two C-shaped plate members 1, and push the two C-shaped plate members 1 to be completely placed on the mandrel mold;

[0051] S3: First, the two V-shaped wing plates are pressed from top to bottom to be deformed and fastened on the upper end surface of the core shaft mold, and then the two V-shaped wing plates are further pressed from bottom to top to be deformed and fastened on the lower end surface of the core shaft mold to obtain a rectangular tube.

[0052] Furthermore, in step S3 , it further includes: fastening bolts 8 to the grooves 7 prefabricated in the C-shaped plate members 1 to securely lock the two C-shaped plate members 1 .

[0053] Specifically, the above manufacturing method has the following beneficial effects:

[0054] First, manufacturing accuracy is improved: the synchronous cold-bending process ensures that the sizes and shapes of the two C-shaped plate members 1 are precisely consistent, thus avoiding the problems of loose connection and insufficient structural strength caused by processing errors.

[0055] Second, the structural strength is enhanced: a core shaft mold is used in the splicing and overlapping process, so that the two C-shaped plate components 1 can be accurately positioned and tightly fitted. After the upper and lower pressing processes, an integral rectangular tube is formed, which effectively improves the overall strength and stability of the structure.

[0056] Third, simplify the production process: This method organically combines the steps of sheet forming, flipping, plugging, and pressing through a series of continuous processes, which simplifies the production process, improves production efficiency, and is suitable for large-scale industrial production.

[0057] Fourth, it reduces material waste: Due to the high precision and efficiency in the molding and assembly process, material utilization is significantly improved, which reduces material waste and lowers production costs.

[0058] Fifth, the smoothness of the connection is improved: the use of a core shaft mold and a precise pressing process ensures the smoothness and adaptability of the connection between the upper V-shaped wing plate 3 and the lower V-shaped wing plate 4, avoiding the problems of uneven connection and insufficient adaptability in traditional processes.

[0059] Sixth, easy operation: The entire manufacturing process is standardized and modularized, and the operation is relatively simple, which reduces the dependence on highly skilled workers and reduces the operating difficulty and labor costs.

[0060] Seventh, improve production safety: by carrying out most of the processing and assembly in the factory, the workload and complexity of on-site construction are reduced, production safety is improved, and the risks of on-site construction are reduced.

[0061] Eighth, enhanced anti-deformation ability: the upper and lower pressing process makes the bent parts fit tightly, which improves the anti-deformation ability of the sealed tube, can better withstand external loads and environmental changes, and improves the durability and service life of the product.

[0062] In summary, this manufacturing method can produce high-quality modular rectangular tubes, which are widely used in the construction industry to meet the requirements of modern buildings for high strength, high adaptability and high efficiency.

[0063] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention.

Claims

1. A combined rectangular tube, characterized in that: A C-shaped plate member comprising a main web, an upper V-shaped flange and a lower V-shaped flange; The upper V-shaped wing plate is arranged at the upper end of the main web, and the lower V-shaped wing plate is arranged at the lower end of the main web, and the openings of the upper V-shaped wing plate and the lower V-shaped wing plate are both facing one side of the main web; The two C-shaped plate members are interlocked and embraced together, one of the C-shaped plate members is flipped 180 degrees and then inserted into the other C-shaped plate member, the upper V-shaped wing plate of one C-shaped plate member and the lower V-shaped wing plate of the other C-shaped plate member are opposite to each other, the lower V-shaped wing plate of one C-shaped plate member and the upper V-shaped wing plate of the other C-shaped plate member are opposite to each other, and the main webs of the two C-shaped plate members are opposite to each other on different horizontal planes; The two V-shaped wing plates are further pressed together from top to bottom to overlap each other to form an upper plate of the rectangular tube, and the two V-shaped wing plates are further pressed together from bottom to top to overlap each other to form a lower plate of the rectangular tube, and the two main webs are stacked and fixed until they face each other on the same horizontal plane to form a whole rectangular tube; The bending angle between the upper V-shaped wing plate and the main web is limited to between 30° and 45°, and the bending angle between the lower V-shaped wing plate and the main web is limited to between 30° and 45°; Furthermore, the upper V-shaped wing plate and the portion corresponding to the upper plate are both provided with groove portions, and the lower V-shaped wing plate and the portion corresponding to the lower plate are both provided with groove portions, and the groove portions are used for riveting external bolts and countersunking.

2. The combined rectangular tube according to claim 1, characterized in that: The specifications of the two C-shaped plate members are consistent, and the C-shaped plate members are in the shape of open strips, so that the two can be plugged in and overlapped with each other.

3. The combined rectangular tube according to claim 2, characterized in that: The thickness of the C-shaped plate member ranges from 0.6 mm to 4 mm; the height of the main web is from 100 mm to 350 mm, and the width of the upper plate and the lower plate of the main web is more than 90 mm.

4. The combined rectangular tube according to claim 2, characterized in that: The width of the upper V-shaped wing plate is consistent with the width of the upper plate, and the width of the lower V-shaped wing plate is consistent with the width of the lower plate.

5. The combined rectangular tube according to claim 1, characterized in that: The C-shaped plate member is formed into a main web, an upper V-shaped wing plate and a lower V-shaped wing plate in sequence through multiple cold bending processes.

6. The combined rectangular tube according to claim 5, characterized in that: After being stacked and fixed, the V-shaped wing plates on the upper plate or the lower plate are arranged horizontally spaced apart from each other.

7. The combined rectangular tube according to claim 1, characterized in that: The bolt members are sequentially passed through the upper V-shaped wing plate and the lower V-shaped wing plate fixed to the upper plate from top to bottom, or the bolt members are sequentially passed through the upper V-shaped wing plate and the lower V-shaped wing plate fixed to the lower plate from bottom to top, and the heads of the bolt members are smoothly aligned with their respective composite plates.

8. A manufacturing method, applied to the combined rectangular tube according to any one of claims 1 to 7; characterized in that: The steps include: S1: Select two C-shaped plate components of the same specifications and form the main web, upper V-shaped flange and lower V-shaped flange in sequence through simultaneous cold bending; S2: Flip one C-shaped plate member 180° and insert it into another C-shaped plate member, insert a pre-forming mandrel mold between the two C-shaped plate members, and push the two C-shaped plate members to be completely placed on the mandrel mold; S3: First, the two V-shaped wing plates are pressed from top to bottom to be deformed and fastened on the upper end surface of the core shaft mold, and then the two V-shaped wing plates are further pressed from bottom to top to be deformed and fastened on the lower end surface of the core shaft mold to obtain a rectangular tube.

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