A structure that allows double C-shaped purlins to be interlocked without welding.

Abstract

This utility model discloses a structure for interlocking and connecting double C-shaped purlins without welding. It includes double C-shaped purlins interlocked together, with multiple sets of fasteners spaced along the length of each purlin's outer periphery. These fasteners wrap around and lock the double C-shaped purlins in place. Each fastener includes two U-shaped buckles with openings facing each other, their contacting ends fixedly connected together. This utility model, by providing fasteners on the outer periphery of the double C-shaped purlins, allows for convenient and quick interlocking of two double C-shaped steel purlins, forming a rectangular composite section, eliminating the need for welding and achieving a non-destructive connection of the C-shaped steel purlins. Compared to traditional welding methods, this significantly reduces construction time, allows for factory-based construction of components, ensures component processing quality, and significantly reduces construction costs.

Description

Technical Field

[0001] This utility model relates to a structure that can interlock double C-shaped purlins without welding, belonging to the field of building support structure technology. Background Technology

[0002] Purlins are essential structural components used to support roofs or walls in buildings. Their primary function is to bear the loads of the roof or walls and transfer these loads to the steel roof trusses, roof beams, and steel columns. In terms of stress distribution, they are essentially horizontally placed simply supported beams, perpendicular to the roof trusses or installed between steel columns. Currently, C-shaped or Z-shaped steel purlins are commonly used in engineering projects due to their high strength and light weight, and are widely used in the roof and wall structures of steel structure industrial plants, warehouses, stadiums, and other buildings.

[0003] Generally, if a C-shaped purlin section is selected, a single purlin is usually sufficient. However, when the purlin span is large, or the roof or wind load is significant, a single C-shaped purlin often cannot meet the requirements for strength, overall stability, or deflection. In such cases, a single C-shaped purlin with a larger cross-section can be selected in the design. However, this often significantly increases the amount of steel used per unit area of ​​purlin, thus increasing the cost. Conversely, if two C-shaped purlins with smaller cross-sections are interlocked to form a closed rectangular composite section, their load-bearing capacity will be greatly improved. This not only meets the design requirements but also reduces the amount of steel used, resulting in significant economic benefits. In addition, some industrial buildings require a double C-shaped interlocking form when the purlin components are required to have closed cross-sections due to the presence of corrosive media.

[0004] Traditionally, the method for connecting two C-shaped purlins by interlocking them is often welding, where the upper and lower flanges of the C-shaped purlins are connected through the weld (e.g., ...). Figure 1 As shown in the figure, steel purlins are cold-formed thin-walled steel, with a thickness of only 2 to 5 mm. In order to prevent corrosion, the outer surface is usually hot-dip galvanized. Welding will damage the anti-corrosion coating, and the purlin may even suffer weld burn-through damage. High-temperature welding will also cause purlin deformation, affecting installation accuracy and stress characteristics. In addition, the amount of welds required in the welding work is extremely large, which is labor-intensive, time-consuming, and has a long construction period, and the quality is difficult to guarantee. Utility Model Content

[0005] The purpose of this invention is to provide a structure that allows for the interlocking connection of double C-shaped purlins without welding. This structure enables the convenient and quick interlocking connection of two double C-shaped steel purlins to form a rectangular composite section, eliminating the need for welding and achieving a non-destructive connection of components.

[0006] The technical solution of this utility model is: a structure that can connect double C-shaped purlins together without welding, including double C-shaped purlins that are interlocked together, and multiple sets of fasteners are arranged at intervals along the length of the outer periphery of the double C-shaped purlins. The fasteners wrap around and lock the double C-shaped purlins in place. Each fastener includes two U-shaped buckles with openings facing each other, and the ends of the two U-shaped buckles that are in contact are fixedly connected together.

[0007] Each set of fasteners consists of two U-shaped fasteners with identical structures;

[0008] Both ends of the two U-shaped buckles are provided with horizontally extending outward extensions, and the two U-shaped buckles are fixedly connected together.

[0009] In the aforementioned structure that allows for the interlocking connection of double C-shaped purlins without welding, the extended sections of the two U-shaped clips are fixed together by self-tapping screws.

[0010] In the aforementioned structure that allows double C-shaped purlins to be interlocked without welding, a set of fasteners is provided on the double C-shaped purlins at intervals of 280-350mm along their length.

[0011] In the aforementioned structure that allows double C-shaped purlins to be interlocked without welding, the center distance of the outermost fastener is 350mm from the end of the double C-shaped purlin.

[0012] In the aforementioned structure that allows double C-shaped purlins to be interlocked without welding, a set of openings is provided on the side wall of the double C-shaped purlin on the outer side of the outermost snap fastener.

[0013] In the aforementioned structure that allows double C-shaped purlins to be interlocked without welding, the U-shaped buckle is made of Q235 steel plate with a thickness of 2mm and a width of 60mm by forming.

[0014] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model, by setting a snap-fit ​​component on the outer periphery of the double C-shaped purlin, can easily and quickly achieve the interlocking connection of two double C-shaped steel purlins to form a rectangular composite section, eliminating the need for welding and achieving a non-destructive connection of the C-shaped steel purlins. Compared with traditional welding connection methods, it significantly reduces the construction period, allows for factory-based construction of components, ensures the processing quality of components, and significantly reduces construction costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the side structure;

[0017] Figure 3 This is a schematic diagram of the U-shaped buckle structure;

[0018] Figure 4 This is a schematic diagram of the existing C-type purlin connection structure.

[0019] Attached reference numerals: 1-Double C-shaped purlin, 2-Snap fastener, 3-U-shaped snap fastener, 4-Extended section, 5-Self-tapping screw, 6-Opening. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0021] An embodiment of this utility model: A structure that allows for the interlocking connection of double C-shaped purlins without welding includes double C-shaped purlins 1 interlocked together. Multiple sets of fasteners 2 are spaced apart along the length of the outer periphery of the double C-shaped purlins 1. The fasteners 2 wrap around and lock the double C-shaped purlins 1 in place. Each fastener 2 includes two U-shaped buckles 3 with their openings facing each other, and the contacting ends of the two U-shaped buckles 3 are fixedly connected together. By using multiple sets of fasteners 2 to tightly hold and fix the double C-shaped purlins 1, welding the two steel purlins constituting the double C-shaped purlins 1 is eliminated, thus avoiding the welding process and the various problems mentioned in the background art that arise during purlin welding.

[0022] Each set of fasteners 2 consists of two U-shaped fasteners 3 with the same structure. This makes it easier to produce U-shaped fasteners 3, as there is no need to prepare templates for two different U-shaped fasteners 3. Moreover, it is also more convenient to install, as any two U-shaped fasteners 3 can be combined to form a set of fasteners 2.

[0023] Both ends of the two U-shaped buckles 3 that are in contact are provided with horizontally outwardly extending sections 4. The two U-shaped buckles 3 are fixedly connected together. After the two U-shaped buckles 3 are overlapped, it is convenient to fix the two U-shaped buckles 3 together. The fixing method can be welding, screw connection or other methods.

[0024] The two U-shaped clips 3 extend into sections 4 and are fixed together by self-tapping screws 5, making connection convenient and disassembly relatively easy.

[0025] The double C-shaped purlin 1 is provided with a set of fasteners 2 at intervals of 280-350mm along its length, so as to lock and fix the double C-shaped purlin 1 well. Of course, the position of the fasteners 2 should also avoid the positions of the tie rods and strut openings between the double C-shaped purlin 1. It can be determined in advance on site according to the design drawings.

[0026] At both ends of the double C-shaped purlin 1, to avoid the purlin brackets at the end supports of the double C-shaped purlin 1, the center distance of the outermost buckle 2 from the end can be set at 350mm.

[0027] The outer side wall of the double C-shaped purlin 1 of the outermost buckle 2 is provided with a set of openings 6, which facilitates the fixed connection of the double C-shaped purlin 1 to the purlin bracket.

[0028] The U-shaped buckle 3 is made of 2mm thick and 60mm wide Q235 steel plate by pressing. The use of Q235 steel plate ensures the structural strength of the U-shaped buckle 3, making it less prone to extrusion deformation, thus enabling it to lock and fix the double C-shaped purlin 1 securely. The 2mm thickness and 60mm width facilitate the use of self-tapping screws 5 to fix the upper and lower U-shaped buckles 3 together.

[0029] This utility model is implemented as follows: The double C-shaped purlin 1 is connected by double U-shaped buckles 3 as shown in the figure. There are two U-shaped buckles 3, one above the other, which are the same size and have no front or back. They are inserted into the double C-shaped purlin 1 at the spacing shown in the figure to ensure that the edges are aligned. Then, ST4.2 self-tapping screws 5 are used to fix the U-shaped buckles 3 on the left and right sides of the extended section. The connection of the two C-shaped purlins can be quickly realized to form a rectangular composite section.

[0030] When using U-shaped clips 3 to connect two C-shaped purlins, the following steps can be taken:

[0031] First, by determining the C-type purlin selection based on design calculations, the external dimensions of the rectangular cross-section of the double C-type purlin 1 combination can be determined, and the corresponding processing dimensions of the U-type buckle 3 can be determined accordingly.

[0032] Secondly, the U-shaped clips 3 used to connect the double C-shaped purlins 1 are made of 2mm thick Q235 steel plate by forming, with a width of 60mm and a height that can be determined according to the diagram. Each U-shaped clip 3 has a 40mm extension section 4 on both sides. At each connection point, there are two U-shaped clips 3, one above the other, with the same specifications and no distinction between front and back. The width and height of the U-shaped clips 3 are required to have a manufacturing tolerance accuracy of ±2mm. This is to ensure that the clips can be tightly pressed and fitted against the outer surface of the purlins to ensure the stability of the combined section and form an effective combined section to work together under the force. After the U-shaped clips 3 are formed, they should also be hot-dip galvanized to meet the design requirements.

[0033] Third, at both ends of the double C-shaped purlin 1, to avoid the purlin brackets at the end supports of the purlins, the center distance of the fastener 2 from the end can be set at 350mm, and a fastener 2 is set at 280-350mm in the middle of the purlin. Of course, the setting position of the fastener 2 should also avoid the opening positions of the tie rods and struts between the purlins. It can be determined in advance on site according to the design drawings.

[0034] Fourth, in specific implementation, the positioning position of the U-shaped buckle 3 can be determined by drawing lines on the double C-shaped purlin 1. Then, the upper and lower U-shaped buckles 3 at each connection point are pressed and fitted into the double C-shaped purlin 1. The outer edge lines of the upper and lower U-shaped buckles 3 should be aligned. After the upper and lower parts are pressed and fitted together, a self-tapping screw 5 of specification ST4.2 is used on each side of the protruding section 4 of the U-shaped buckle 3 for through-fixing to prevent the U-shaped buckle 3 from shifting.

[0035] After the above steps, the two double C-shaped steel purlins 1 are easily and quickly connected to form a rectangular composite section. Actual engineering tests have shown that it is safe, convenient, economical and efficient.

Claims

1. A structure that allows for the interlocking connection of double C-shaped purlins without welding, characterized in that: It includes a pair of double C-shaped purlins (1) that are fastened together. Multiple sets of fasteners (2) are arranged at intervals along the length of the outer periphery of the double C-shaped purlins (1). The fasteners (2) wrap and lock the double C-shaped purlins (1) in place. The fasteners (2) include two U-shaped buckles (3) with openings facing each other. The ends of the two U-shaped buckles (3) that are in contact are fixedly connected together. Each set of fasteners (2) consists of two U-shaped fasteners (3) with the same structure; Both sides of the two U-shaped buckles (3) are provided with horizontally extending outward extension sections (4), and the extension sections (4) of the two U-shaped buckles (3) are fixedly connected together.

2. The structure of claim 1, wherein: The extended sections (4) of the two U-shaped buckles (3) are fixedly connected together by self-tapping screws (5).

3. The structure of claim 1, wherein: The double C-shaped purlin (1) is provided with a set of fasteners (2) at intervals of 280-350mm along its length.

4. The structure of claim 1, wherein: The center distance between the end fastener (2) and the end of the double C-shaped purlin (1) is 350mm.

5. The structure of claim 1, wherein: The outermost snap fastener (2) has a set of openings (6) on the side wall of the double C-shaped purlin (1).

6. The structure of claim 1, wherein: The U-shaped buckle (3) is made of Q235 steel plate with a thickness of 2mm and a width of 60mm by forming.

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