A cold-formed thin-walled π-shaped steel keel

Abstract

This utility model relates to a cold-formed thin-walled π-shaped steel keel for use in the field of keel systems. It includes two sets of steel keels arranged in a mirror image, with a positioning component between them. The front ends of both sets of steel keels are jointly and fixedly connected to a thermal break. Each set of steel keels includes two keel bodies placed horizontally side-by-side. Each keel body includes a base plate, with two L-shaped plates fixedly connected to the upper end of the base plate. Multiple triangular grooves are carved through the surface of the L-shaped plates. The positioning component supports and fixes the two sets of steel keels, ensuring the left and right keel bodies are aligned and achieving sufficient strength for support and fixation. Compared to existing technologies, welding is unnecessary, effectively preventing misalignment of the two keels due to inaccurate positioning. It also ensures the upper and lower sets of steel keels are parallel, facilitating the installation of the thermal break and effectively enhancing the overall strength of the steel column.

Description

Technical Field

[0001] This utility model relates to a steel keel, and more particularly to a cold-formed thin-walled π-shaped steel keel used in the field of keels. Background Technology

[0002] Steel keel can be embedded in the core of concrete (such as in columns, beams, and shear walls), which can greatly improve the load-bearing capacity of the components and enable them to withstand greater loads (such as the self-weight of super high-rise buildings, wind loads, and seismic loads). Currently, steel keels come in various shapes, such as H-beams, I-beams, box-type steel, and steel pipes.

[0003] To reduce on-site assembly errors, multiple sections of the keel are usually welded together before being embedded in the concrete to form a single steel column. However, when welding two keels together, they must be aligned. During the welding process, misalignment may occur due to inaccurate positioning, resulting in welding deviations. This weakens the connection between the two keels and affects the overall strength of the steel column. Utility Model Content

[0004] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is that if the two keels are misaligned during the welding and joining of the keels, it may lead to welding deviation, making the connection between the two keels relatively weak, thereby affecting the overall strength of the steel column.

[0005] To address the aforementioned problems, this utility model provides a cold-formed thin-walled π-shaped steel keel, comprising two sets of steel keels arranged in a mirror image, with a positioning component between the two sets of steel keels, and a common fixed connection between the front ends of the two sets of steel keels. Each set of steel keels includes two keel bodies placed side by side in the horizontal direction. Each keel body includes a base plate, with two L-shaped plates fixedly connected to the upper end of the base plate. Multiple triangular grooves are carved through the surface of the L-shaped plates. The positioning component includes a mounting block located between the two sets of steel keels. Adjusting screws are rotatably connected to both the upper and lower ends of the mounting block. Positioning plates are rotatably connected to the ends of the two adjusting screws that are far apart. Adjusting plates are threaded onto the outer surface of the adjusting screws. Multiple protrusions are fixedly connected to the corresponding ends of the two horizontally opposite adjusting plates. Multiple limiting holes are carved through the end of the L-shaped plate near the mounting block. The end of the protrusion near the mounting block is movably connected through the adjacent limiting hole. Positioning screws are threaded through the common thread of the two longitudinally opposite protrusions. Baffles are provided at both ends of the positioning plates, and the two baffles are respectively located within the two horizontally opposite keel bodies.

[0006] In the aforementioned cold-formed thin-walled π-shaped steel keel, the two sets of steel keels are supported and fixed by positioning components, and the two keel bodies on the left and right are aligned. The positioning components can achieve the strength of support and fixation. Compared with the existing technology, welding is not required, which effectively avoids the situation where the two keels are misaligned due to inaccurate positioning. At the same time, the upper and lower sets of steel keels are in a parallel state, which facilitates the installation of thermal break bridges, thereby effectively enhancing the overall strength of the steel column.

[0007] As a further improvement of this application, the L-shaped plates are mirror-distributed, and the corners of the L-shaped plates and the connection between the L-shaped plates and the base plate are rounded.

[0008] As a further improvement of this application, the positioning plate is located between the two keel bodies, and the number of upper limit holes on one keel body is half the number of protrusions on the adjustment plate.

[0009] As a further improvement of this application, the ends of the two positioning plates that are far apart are respectively attached to the two adjacent base plates, and the front and rear ends of the adjusting plate are respectively attached to the adjacent L-shaped plates.

[0010] As another improvement of this application, the corresponding ends of the two baffles are attached to the positioning plate, and the lower ends of the baffles are fixedly connected to the upper ends of the adjacent base plate.

[0011] As another improvement of this application, one of the L-shaped plates has a receiving groove cut into its surface, and the end of the baffle moves through the receiving groove and is fixedly connected to a U-shaped rod.

[0012] In summary, in practical applications, the positioning plate is placed between the two keel bodies, and the two keel bodies are pushed closer together until both ends of the positioning plate contact the two baffles inside the two keel bodies. At this point, the two keel bodies are aligned. Then, one hand holds the mounting block to limit its movement, keeping it stationary, while the other hand rotates the adjusting screw to move the adjusting plate toward the mounting block until the protrusion passes through the adjacent limiting hole. Then, the two protrusions are installed and fixed by the positioning screw, ensuring that the two keel bodies are aligned and unlikely to misalign. After the two sets of steel keels are limited and fixed by the positioning component, the overall strength has reached the required strength of the steel column. Compared with existing technologies, welding is not required. Then, the thermal break is installed on the surface of the two sets of steel keels, effectively avoiding welding deviations and thus effectively enhancing the overall strength of the steel column. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the first embodiment of this application; Figure 2This is a schematic diagram of the keel body structure according to the first embodiment of this application; Figure 3 This is a schematic diagram of the positioning component structure according to the first embodiment of this application; Figure 4 This is a schematic diagram of the bump structure according to the first embodiment of this application; Figure 5 This is a schematic diagram of the keel body installation according to the first embodiment of this application; Figure 6 This is a schematic diagram of the U-shaped rod structure according to the second embodiment of this application.

[0014] Explanation of the labels in the diagram: 1. Keel body, 101. Base plate, 102. L-shaped plate, 103. Triangular groove, 2. Mounting block, 3. Adjusting screw, 4. Positioning plate, 5. Adjusting plate, 6. Protrusion, 7. Limiting hole, 8. Positioning screw, 9. Baffle, 10. Broken bridge, 11. Accommodating groove, 12. U-shaped rod. Detailed Implementation

[0015] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0016] First implementation method: Figure 1 and Figure 2 The diagram shows a cold-formed thin-walled π-shaped steel keel, comprising two sets of steel keels arranged in a mirror image. A positioning component is provided between the two sets of steel keels, and the front ends of the two sets of steel keels are fixedly connected to a thermal break 10. Each set of steel keels includes two keel bodies 1 placed side by side in the horizontal direction. Each keel body 1 includes a base plate 101, and two L-shaped plates 102 are fixedly connected to the upper end of the base plate 101. Multiple triangular grooves 103 are carved through the surface of the L-shaped plates 102. The two L-shaped plates 102 are arranged in a mirror image. The corners of the L-shaped plates 102 and the connection between the L-shaped plates 102 and the base plate 101 are rounded. The keel body 1 is π-shaped in shape. Compared with existing keels of C-shaped shape, the π-shaped keel has better tensile strength, and the triangular grooves 103 can reduce the weight of the keel body 1 and reduce costs.

[0017] Figure 2 , Figure 3 , Figure 4 and Figure 5The positioning assembly includes a mounting block 2 located between two sets of steel keels. Adjusting screws 3 are rotatably connected to both the upper and lower ends of the mounting block 2. Positioning plates 4 are rotatably connected to the ends of the two adjusting screws 3 that are furthest apart. The positioning plates 4 are located between the two keel bodies 1. The corresponding ends of the two baffles 9 are in contact with the positioning plates 4. The furthest ends of the two positioning plates 4 are respectively in contact with two adjacent base plates 101, thus limiting the positioning plates 4. When the adjusting screws 3 rotate, the positioning plates 4 are difficult to displace. Adjusting plates 5 are threaded onto the outer surface of the adjusting screws 3. The adjusting screws 3 can drive the adjusting plates 5 to move up and down. The front and rear ends of the adjusting plates 5 are respectively in contact with adjacent L-shaped plates 102, forcing the adjusting plates 5 to move only longitudinally. Two horizontally opposite adjusting plates 5 are each fixedly connected to one end of a plurality of protrusions 6. The L-shaped plate 102 near the mounting block 2 has a plurality of limiting holes 7 drilled through it. The number of limiting holes 7 in one keel body 1 is half the number of protrusions 6 on the adjusting plate 5. The end of the protrusion 6 near the mounting block 2 moves through the adjacent limiting hole 7. The two keel bodies 1 are limited by the plurality of protrusions 6 on the adjusting plate 5, and the protrusions 6 are limited by the positioning screw 8. The two longitudinally opposite protrusions 6 are connected to the positioning screw 8 by a common thread. The left and right ends of the positioning plate 4 are provided with baffles 9. The two baffles 9 are respectively located in the two horizontally parallel keel bodies 1. The lower end of the baffle 9 is fixedly connected to the upper end of the adjacent base plate 101.

[0018] When installing the steel keel, the positioning plate 4 is placed between the two keel bodies 1. The worker pushes the two keel bodies 1 closer together until both ends of the positioning plate 4 contact the two baffles 9 inside the two keel bodies 1. At this point, the two keel bodies 1 are aligned. Then, one hand holds the mounting block 2 to limit its position and keep it stationary. The other hand rotates the adjusting screw 3 to move the adjusting plate 5 toward the mounting block 2 until the protrusion 6 moves through the adjacent limiting hole 7. Then, the two protrusions 6 are installed and fixed by the positioning screw 8, so that the two keel bodies 1 are aligned and it is difficult for them to be misaligned. After the two sets of steel keels are limited and fixed by the positioning component, the overall strength has reached the required strength of the steel column. Compared with the existing technology, welding is not required. Then, the thermal break 10 is installed on the surface of the two sets of steel keels, which effectively avoids welding deviation and thus effectively enhances the overall strength of the steel column.

[0019] Second implementation method: This embodiment adds a receiving groove 11 and a U-shaped rod 12 to the first embodiment, while the rest remains the same as the first embodiment.

[0020] Figure 6As shown: one of the L-shaped plates 102 has a receiving groove 11 cut into its surface, and the end of the baffle 9 moves through the receiving groove 11 and is fixedly connected to a U-shaped rod 12.

[0021] Before installing the keel body 1, the baffle 9 can be inserted into the keel body 1 through the receiving groove 11 to limit and fix the positioning plate 4. Then, the protrusion 6 passes through the limiting hole 7 to limit the two keel bodies 1, so that the two keel bodies 1 are aligned with each other and are difficult to shake. At this time, the two keel bodies 1 are welded, so that the two keel bodies 1 are not easy to misalign during the welding process, thus effectively avoiding welding deviation. The positioning component limits the keel body 1 from the inside and does not block the connection between the two keel bodies 1, thus facilitating the welding of the connection between the two keel bodies 1. After the two keel bodies 1 are welded, the positioning screw 8 can be removed and the adjusting screw 3 can be rotated to move the adjusting plate 5, causing the protrusion 6 to disengage from the limiting hole 7. At this time, the U-shaped rod 12 is pulled to remove the baffle 9, and the positioning component can be moved to the left or right, so that the positioning component is disengaged from the two sets of steel keels, thus facilitating the reuse of the positioning component and reducing the use cost.

[0022] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A cold-formed thin-walled pi steel joist comprising two groups of steel joists, characterized in that: The two sets of steel keels are arranged in a mirror image, and a positioning component is provided between the two sets of steel keels. The front ends of the two sets of steel keels are fixedly connected to a thermal break (10). One set of steel keels includes two keel bodies (1) placed side by side in the horizontal direction. The keel body (1) includes a base plate (101). The upper end of the base plate (101) is fixedly connected to two L-shaped plates (102). The surface of the L-shaped plates (102) is carved with multiple triangular grooves (103). The positioning component includes a mounting block (2) located between two sets of steel keels. The upper and lower ends of the mounting block (2) are rotatably connected to adjusting screws (3). The ends of the two adjusting screws (3) that are far apart are rotatably connected to positioning plates (4). The outer surface of the adjusting screws (3) is threaded with adjusting plates (5). The two horizontally opposite adjusting plates (5) are fixedly connected to a plurality of protrusions (6) at their corresponding ends. The L-shaped plate (102) near the mounting block (2) has a plurality of limiting holes (7) drilled through it. The end of the protrusion (6) near the mounting block (2) moves through the adjacent limiting hole (7). The two longitudinally opposite protrusions (6) are threaded together with positioning screws (8). The left and right ends of the positioning plate (4) are provided with baffles (9). The two baffles (9) are respectively located in the two horizontally parallel keel bodies (1).

2. The cold-formed thin-walled pi steel joist according to claim 1, wherein: The two L-shaped plates (102) are arranged in a mirror image. The corners of the L-shaped plates (102) and the connection between the L-shaped plates (102) and the base plate (101) are rounded.

3. The cold-formed thin-walled pi steel stud according to claim 1, wherein: The positioning plate (4) is located between the two keel bodies (1), and the number of upper positioning holes (7) on one keel body (1) is half the number of protrusions (6) on the adjustment plate (5).

4. The cold-formed thin-walled pi steel joist according to claim 3, wherein: The two positioning plates (4) are respectively attached to the two adjacent base plates (101) at their far ends, and the front and rear ends of the adjustment plate (5) are respectively attached to the adjacent L-shaped plate (102).

5. The cold-formed thin-walled π-shaped steel stud according to claim 1, wherein: One end of each of the two baffles (9) is attached to the positioning plate (4), and the lower end of the baffle (9) is fixedly connected to the upper end of the adjacent bottom plate (101).

6. The cold-formed thin-walled pi steel stud according to claim 1, wherein: One of the L-shaped plates (102) has a receiving groove (11) cut into its surface, and the end of the baffle (9) moves through the receiving groove (11) and is fixedly connected to a U-shaped rod (12).

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