High-temperature-resistant fireproof steel component

Abstract

The utility model discloses a kind of high-temperature-resistant fireproof steel components, it is related to the technical field of building engineering, including I-beam, mounting seat and connecting assembly, the both ends of I-beam and the side of mounting seat are all provided with splicing slot, connecting assembly includes splicing plug and limiting insertion rod, splicing plug is cooperatively arranged in two adjacent splicing slots, the side of I-beam and mounting seat is all provided with limiting insertion hole, limiting through-hole is set in the side of splicing plug, limiting insertion rod is set in corresponding limiting insertion hole and limiting through-hole, the outside of I-beam, mounting seat and connecting assembly is provided with high-temperature-resistant fireproof coating, by using splicing plug and limiting insertion rod, avoid the damage of heat-affected zone in welding process to steel organization and performance, effectively maintain the strength and toughness of steel component whole, reduce the risk that fatigue crack appears in welding position under dynamic load, greatly improve the structure safety and reliability after steel component connection.

Description

Technical Field

[0001] This utility model relates to the technical field of building engineering, specifically to a high-temperature resistant fireproof steel component. Background Technology

[0002] Steel components refer to composite steel structural members that can bear and transfer loads, made of steel plates, angle steel, channel steel, I-beams, welded steel, or hot-rolled H-beams that are cold-bent or welded and connected by connectors. Steel component systems have comprehensive advantages such as light weight, factory manufacturing, quick installation, short construction period, good seismic performance, fast investment recovery, and less environmental pollution. Globally, especially in developed countries and regions, steel components are widely and rationally used in the field of building engineering.

[0003] In practical engineering construction, traditional steel components have a fixed length. When a project requires longer components, welding is often used to extend them. While welding can achieve length extension, it presents several problems: First, the welding process creates a heat-affected zone, altering the steel's microstructure and properties, reducing the overall strength and toughness of the component. Especially under dynamic loads, fatigue cracks are prone to occur at the welded joints, affecting structural safety. Second, welded joints are weak points in fire resistance. Under the high temperatures of a fire, the steel properties at the welded joints deteriorate more rapidly, resulting in poor fire resistance and premature structural failure. Furthermore, with increasingly stringent fire protection requirements in modern buildings, even with ordinary fire-retardant coatings and other protective measures, the fire resistance of welded joints in high-temperature fire environments still struggles to meet long-term fire resistance needs, limiting the application of steel components in large-scale, critical construction projects. Utility Model Content

[0004] This invention provides a high-temperature fireproof steel component that can solve the problem that in the prior art, when a project requires a long component, welding is often used to extend it, but the fire resistance of the welded joint is still difficult to meet the requirements for long-term fire resistance.

[0005] A high-temperature resistant and fireproof steel component includes an I-beam, a mounting base, and a connecting assembly. Both ends of the I-beam and the sides of the mounting base are provided with splicing slots, and the splicing slots at both ends of the I-beam are symmetrically arranged. The connecting assembly includes splicing blocks and limiting rods. The splicing blocks are fitted into two adjacent splicing slots. The sides of both the I-beam and the mounting base are provided with limiting holes communicating with the splicing slots. The sides of the splicing blocks are provided with several symmetrically arranged limiting through holes. Several limiting rods are provided and penetrate through the corresponding limiting holes and limiting through holes. The outer surfaces of the I-beam, the mounting base, and the connecting assembly are all provided with a high-temperature resistant and fireproof coating, which is made of intumescent fireproof paint.

[0006] According to one embodiment of this utility model, both the splicing slot and the splicing block have a T-shaped structure. The splicing slot includes a horizontal slot and a vertical slot, with the horizontal slot located at the top of the vertical slot and communicating with it. The connecting assembly also includes a limiting block, which is fixedly disposed within the opening of the horizontal slot. The top of the splicing block has a limiting groove that mates with the limiting block. The limiting block is integrally formed with the horizontal slot, which has a T-shaped structure. The splicing block includes a horizontal block and a vertical block, with the horizontal block fixedly disposed at the top of the vertical block. The vertical block is slidably connected to the vertical slot, and the horizontal block is slidably connected to the horizontal slot.

[0007] According to one embodiment of the present invention, the connecting assembly further includes a fastening nut, the limiting rod is a double-ended bolt, the fastening nut is threadedly connected to the limiting rod, and the fastening nut is made of stainless steel 304.

[0008] According to one embodiment of the present invention, the connecting assembly further includes a metal flat washer, which is sleeved on the side of the limiting rod, and one side of the metal flat washer abuts against one end of the fastening nut. The metal flat washer is made of 304 stainless steel.

[0009] The advantages of this utility model compared to the prior art are:

[0010] 1. By using splicing blocks and limiting rods, the heat-affected zone during welding is prevented from damaging the steel's structure and properties, effectively maintaining the overall strength and toughness of the steel components, reducing the risk of fatigue cracks at the welded parts under dynamic loads, and significantly improving the structural safety and reliability of the connected steel components.

[0011] 2. Compared with welded joints, spliced ​​connection structures have more uniform and stable mechanical properties, reducing structural weaknesses caused by performance differences at the connection points. This makes the steel components more evenly stressed under various loads, enhancing the overall structural stability.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0014] Figure 1 This is a three-dimensional structural diagram of a high-temperature resistant and fireproof steel component.

[0015] Figure 2 This is a three-dimensional structural diagram of the mounting base in this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the I-beam in this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the splicing interlocking block in this utility model.

[0018] Figure 5 This is a three-dimensional structural cross-sectional view of the connecting component in this utility model.

[0019] The reference numerals in the figures include:

[0020] 1. I-beam; 2. Mounting base; 3. Connecting assembly; 4. Splicing slot; 5. Splicing block; 6. Limiting rod; 7. Limiting hole; 8. Horizontal slot; 9. Vertical slot; 10. Limiting block; 11. Horizontal block; 12. Vertical block; 13. Fastening nut; 14. Metal flat washer; 15. Limiting slot; 16. Limiting through hole. Detailed Implementation

[0021] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0022] First Embodiment

[0023] Please see Figures 1 to 5 As shown, a high-temperature fireproof steel component includes an I-beam 1, a mounting base 2, and a connecting assembly 3. Both ends of the I-beam 1 and the sides of the mounting base 2 are provided with splicing slots 4, and the splicing slots 4 at both ends of the I-beam 1 are symmetrically arranged. The connecting assembly 3 includes splicing blocks 5 and limiting rods 6. The splicing blocks 5 are fitted into two adjacent splicing slots 4. The sides of both the I-beam 1 and the mounting base 2 are provided with limiting holes 7 that communicate with the splicing slots 4. The sides of the splicing blocks 5 are provided with several symmetrically arranged limiting through holes 16. Several limiting rods 6 are provided and penetrate into the corresponding limiting holes 7 and limiting through holes 16. The outer sides of the I-beam 1, the mounting base 2, and the connecting assembly 3 are all provided with a high-temperature fireproof coating, which is made of intumescent fireproof paint.

[0024] When it is necessary to lengthen steel components, select the appropriate number of I-beams 1 and insert the splicing blocks 5 into the ends of two adjacent I-beams 1 or into the splicing slots 4 corresponding to the sides of the I-beams 1 and the mounting base 2, so that the splicing blocks 5 and the splicing slots 4 fit tightly together, thereby achieving the initial splicing and positioning between steel components.

[0025] Subsequently, the limiting rod 6 is inserted through the limiting insertion hole 7 on the side of the I-beam 1, the mounting base 2, and the limiting through hole 16 on the side of the splicing block 5 in sequence. The limiting rod 6 fixes the splicing block 5 to prevent it from moving in the splicing slot 4, thereby ensuring the overall stability and connection strength of the multiple steel components after splicing, and completing the lengthening operation of the steel components.

[0026] In terms of fire resistance, the exterior of the I-beam 1, mounting base 2, and connecting components 3 are all coated with a high-temperature fire-resistant coating made of intumescent fire-retardant paint. Under normal operating temperatures, this coating remains stable. When exposed to the high temperatures of a fire, the coating absorbs heat and rapidly expands, forming a thick, honeycomb-like or sponge-like insulating carbonized layer. This carbonized layer effectively blocks heat transfer to the interior of the steel structure, significantly slowing down the rate of temperature rise and allowing the steel structure to maintain good mechanical properties for a longer period during a fire, continuing to bear structural loads.

[0027] By using splicing blocks 5 and limiting rods 6, the heat-affected zone during welding is prevented from damaging the steel structure and properties, effectively maintaining the overall strength and toughness of the steel components, reducing the risk of fatigue cracks at the welded parts under dynamic loads, and significantly improving the structural safety and reliability of the connected steel components.

[0028] Compared to welded joints, spliced ​​connection structures have more uniform and stable mechanical properties, reducing structural weaknesses caused by performance differences at the connection points. This allows steel components to be subjected to more balanced forces under various loads, enhancing the overall structural stability.

[0029] Second Embodiment

[0030] Based on the first embodiment, both the splicing slot 4 and the splicing block 5 have a T-shaped structure. The splicing slot 4 includes a horizontal slot 8 and a vertical slot 9. The horizontal slot 8 is located at the top of the vertical slot 9 and is connected to the vertical slot 9. The connecting component 3 also includes a limiting block 10, which is fixedly disposed in the slot of the horizontal slot 8. The top of the splicing block 5 has a limiting groove 15 that cooperates with the limiting block 10. The limiting block 10 is integrally formed with the horizontal slot 8, which has a T-shaped structure. The splicing block 5 includes a horizontal block 11 and a vertical block 12. The horizontal block 11 is fixedly disposed at the top of the vertical block 12. The vertical block 12 is slidably connected to the vertical slot 9, and the horizontal block 11 is slidably connected to the horizontal slot 8.

[0031] During assembly, the vertical block 12 of the splicing plug 5 is inserted into the vertical groove 9, and the horizontal block 11 slides into the horizontal groove 8, achieving initial assembly. At this time, the limiting slot 15 at the top of the splicing plug 5 is aligned with the limiting block 10 at the opening of the horizontal groove 8. The limiting block 10 is embedded in the limiting slot 15 to prevent the splicing plug 5 from detaching in the horizontal direction. Together with the limiting plug rod 6, it further enhances the stability of the connection.

[0032] Third Embodiment

[0033] Based on the first embodiment, the connecting assembly 3 further includes a fastening nut 13. The limiting rod 6 is a double-ended bolt, and the fastening nut 13 is threadedly connected to the limiting rod 6. The fastening nut 13 is made of 304 stainless steel. During installation, the double-ended bolt passes through the corresponding holes on the I-beam 1, the mounting base 2, and the splicing block 5, and the fastening nuts 13 are screwed onto both ends. By tightening the fastening nuts 13, a tightening force is applied to the I-beam 1, the mounting base 2, and the splicing block 5. The fastening nut 13, made of 304 stainless steel, has good corrosion resistance and is not easily rusted or corroded in complex environments such as humidity and acid / alkali, ensuring long-term stability and reliability of the connection and extending the service life of the steel components.

[0034] Fourth embodiment

[0035] Based on the third embodiment, the connecting assembly 3 further includes a metal flat washer 14, which is sleeved on the side of the limiting rod 6, with one side of the metal flat washer 14 abutting against one end of the fastening nut 13. The metal flat washer 14 is made of stainless steel 304. During installation, the metal flat washer 14 is sleeved on the limiting rod 6, positioned between the fastening nut 13 and the surface of the I-beam 1 or the mounting base 2. When the fastening nut 13 is tightened, the metal flat washer 14 evenly distributes the tightening force to the contact surface, avoiding excessive local pressure that could damage the component surface, while also preventing the fastening nut 13 from directly rubbing against the component surface, thus reducing wear.

[0036] The metal flat washer 14 increases the contact area between the fastening nut 13 and the component surface, making the fastening force distribution more uniform, reducing the risk of loosening due to uneven force, and further improving the stability and reliability of the connection. At the same time, the metal flat washer 14 also increases the friction between the fastening nut 13 and the component, helping to prevent the fastening nut 13 from loosening on its own under vibration or external force, enhancing the anti-loosening effect of the connection, and ensuring the safety of the steel component during long-term use.

[0037] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A high temperature resistant fireproof steel construction, characterized in that, The assembly includes an I-beam (1), a mounting base (2), and a connecting component (3). Both ends of the I-beam (1) and the sides of the mounting base (2) are provided with splicing slots (4), and the splicing slots (4) at both ends of the I-beam (1) are arranged symmetrically. The connecting component (3) includes a splicing plug (5) and a limiting plug (6). The splicing plug (5) is fitted into two adjacent splicing slots (4). The sides of the I-beam (1) and the mounting base (2) are provided with limiting holes (7) that communicate with the splicing slots (4). The sides of the splicing plug (5) are provided with several limiting through holes (16) arranged symmetrically. Several limiting plugs (6) are provided and are installed through the corresponding limiting holes (7) and limiting through holes (16). The outer sides of the I-beam (1), the mounting base (2), and the connecting component (3) are all provided with a high-temperature fireproof coating.

2. A high temperature resistant fireproof steel member according to claim 1, wherein Both the splicing slot (4) and the splicing plug (5) are T-shaped structures. The splicing slot (4) includes a horizontal slot (8) and a vertical slot (9). The horizontal slot (8) is located at the top of the vertical slot (9), and the horizontal slot (8) is connected to the vertical slot (9).

3. A high temperature resistant fireproof steel member according to claim 2, wherein The connecting component (3) also includes a limiting block (10), which is fixedly installed in the slot of the transverse groove (8). The top of the splicing plug (5) is provided with a limiting slot (15) that cooperates with the limiting block (10).

4. A high temperature resistant fireproof steel member according to claim 3, wherein The limiting block (10) and the transverse groove (8) are integrally formed, and the transverse groove (8) has a T-shaped structure.

5. A high-temperature resistant fireproof steel component as described in claim 2, characterized in that, The splicing block (5) includes a horizontal block (11) and a vertical block (12). The horizontal block (11) is fixedly set on the top of the vertical block (12). The vertical block (12) is slidably connected to the vertical groove (9). The horizontal block (11) is slidably connected to the horizontal groove (8).

6. A high-temperature resistant fireproof steel component as described in claim 1, characterized in that, The connecting assembly (3) also includes a fastening nut (13), the limiting rod (6) is a double-ended bolt, and the fastening nut (13) is threadedly connected to the limiting rod (6).

7. A high-temperature resistant fireproof steel component as described in claim 6, characterized in that, The connecting assembly (3) also includes a metal flat washer (14), which is sleeved on the side of the limiting rod (6), and one side of the metal flat washer (14) abuts against one end of the fastening nut (13).

8. A high-temperature resistant fireproof steel component as described in claim 7, characterized in that, The metal flat washer (14) is made of stainless steel 304.

9. A high-temperature resistant fireproof steel component as described in claim 6, characterized in that, The fastening nut (13) is made of stainless steel 304.

10. A high-temperature resistant fireproof steel component as described in claim 1, characterized in that, The high-temperature fireproof coating is made of intumescent fireproof paint.

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