A prefabricated steel structure for buildings

Abstract

This utility model relates to the field of prefabricated building technology and discloses a prefabricated steel structure, including a support column. A fixed frame is fixedly connected to the upper end of the support column. Connectors are fixedly connected to both sides of the fixed frame, and each connector has an opening. A crossbeam is provided on both sides of the upper end of the support column, and a T-shaped block is provided at the opposite end of each crossbeam. The outer wall of the T-shaped block is embedded inside the opening. A support assembly for supporting the crossbeams is provided in the middle of the support column. This utility model replaces the traditional method of fixing with numerous bolts, enabling rapid and precise connection between the crossbeams and the support column, reducing cumbersome bolt installation and tightening processes, significantly improving assembly efficiency. It also avoids connection failures caused by loose or rusted bolts in traditional bolted connections, significantly enhancing the stability and durability of the structural connection and reducing subsequent maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building technology, and in particular to a prefabricated building steel structure. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure mainly consists of steel beams, steel columns, steel trusses, and other components made of shaped steel and steel plates. These components are typically connected by welds, bolts, or rivets. Due to their light weight and ease of construction, they are widely used in large factories, stadiums, and high-rise buildings.

[0003] Traditional bolt fixing methods are widely used in prefabricated steel structure connections, but they have significant drawbacks. To ensure connection strength, a large number of bolts are often required to fasten the connection nodes between the support columns and beams. This not only increases the cost of bolt procurement but also necessitates the individual positioning, drilling, and tightening of each bolt during installation, making the process complex, significantly extending assembly time, and reducing construction efficiency. More importantly, bolts are susceptible to vibration, environmental corrosion, and other factors during long-term use, leading to loosening, rusting, or even breakage. This results in decreased stability of the connection nodes, increasing the difficulty and cost of structural maintenance. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a prefabricated steel structure for buildings, which avoids the problems of traditional bolt fixing, cumbersome operation and poor assembly efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A prefabricated steel structure for buildings includes a support column. A fixed frame is fixedly connected to the upper end of the support column. Connectors are fixedly connected to both the left and right sides of the fixed frame. An opening is provided inside the connector. A crossbeam is provided on both the left and right sides of the upper end of the support column. A T-shaped block is provided at the opposite end of each crossbeam. The outer wall of the T-shaped block is embedded inside the opening. A support component for supporting the crossbeam is provided in the middle of the support column.

[0006] Furthermore, the support assembly includes a lifting frame that slides up and down outside the support column. The left and right sides of the lifting frame are fixedly connected to a support plate. A reinforcing rod is rotatably connected to the inner side of the support plate. A groove plate is fixedly connected to the top of the reinforcing rod. The upper end of the groove plate is close to the lower side of the crossbeam.

[0007] Furthermore, a first bolt hole is provided at the lower center of the lifting frame.

[0008] Furthermore, a second bolt hole is provided in the middle of the support column, and a third bolt hole is provided in the middle of the support column below the second bolt hole.

[0009] Furthermore, a fixing bolt is inserted into both the second bolt hole and the first bolt hole, and a pin is inserted into the rear end of the fixing bolt.

[0010] Furthermore, a locking block is fixedly connected to each side of the upper end of the reinforcing rod.

[0011] Furthermore, the upper left and right sides of the support column are fixedly connected with U-shaped plates for cooperating with the card block.

[0012] Furthermore, a base plate is fixedly connected to the bottom of the support column, and through holes are provided at the four corners of the base plate.

[0013] This utility model has the following beneficial effects: 1. In this utility model, an interlocking connection structure is adopted, in which the T-shaped block at the end of the beam and the opening of the connector at the upper end of the support column are used to replace the traditional method of fixing with a large number of bolts. This not only enables the precise docking of the beam and the support column quickly, but also reduces the tedious processes of bolt installation and tightening, greatly improving assembly efficiency. It also avoids the connection failure problem caused by loose or rusted bolts in traditional bolt connections, significantly enhancing the stability and durability of the structural connection and reducing the later maintenance cost.

[0014] 2. In this utility model, a stable triangular support structure is formed by the liftable lifting frame and the rotatable reinforcing rod, which greatly improves the bending resistance of the crossbeam and the load-bearing capacity of the overall structure. When not in use, the reinforcing rod can be folded and stored to reduce the space occupied during transportation. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of a prefabricated steel structure for buildings proposed in this utility model; Figure 2 This is a schematic diagram of a connector for a prefabricated steel structure of a building proposed in this utility model; Figure 3 This is a schematic diagram of a lifting frame for a prefabricated building steel structure proposed in this utility model.

[0016] Legend: 1. Support column; 2. Base plate; 3. Through hole; 4. Fixing frame; 5. Connector; 6. Opening; 7. Crossbeam; 8. T-block; 9. Lifting frame; 10. Support plate; 11. Reinforcing rod; 12. Groove plate; 13. Locking block; 14. U-shaped plate; 15. First bolt hole; 16. Second bolt hole; 17. Third bolt hole; 18. Fixing bolt; 19. Pin. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1-3 An embodiment of this utility model provides: a prefabricated building steel structure, including a support column 1, a fixed frame 4 fixedly connected to the upper end of the support column 1, connectors 5 fixedly connected to the left and right sides of the fixed frame 4, an opening 6 provided inside the connector 5, a crossbeam 7 provided on the left and right sides of the upper end of the support column 1, a T-shaped block 8 provided at the opposite end of the crossbeam 7, the outer wall of the T-shaped block 8 embedded in the opening 6, and a base plate 2 fixedly connected to the bottom of the support column 1, with through holes 3 opened at the four corners of the base plate 2.

[0019] In the initial assembly stage, the basic connection between the crossbeam 7 and the support column 1 is first carried out. During the connection, the T-shaped block 8 at the end of the crossbeam 7 is precisely embedded into the opening 6 of the connector 5 on both sides of the upper fixing frame 4 of the support column 1. By using the interlocking structure of the T-shaped block 8 and the opening 6, the initial positioning of the crossbeam 7 and the support column 1 is achieved. This not only allows for the quick docking of the two but also effectively limits the horizontal displacement of the crossbeam 7 through the limiting effect of the T-shaped structure. At the same time, it avoids the inconvenience caused by the traditional fixation with a large number of bolts and the problem of bolts being prone to rust. The base plate 2 at the bottom of the support column 1 is fixed to the foundation or substructure through the through holes 3 at the four corners to ensure the root stability of the entire support system.

[0020] Reference Figures 1-3 A lifting frame 9 slides up and down on the outside of the support column 1. A support plate 10 is fixedly connected to both the left and right sides of the lifting frame 9. A reinforcing rod 11 is rotatably connected to the inside of the support plate 10. A groove plate 12 is fixedly connected to the top of the reinforcing rod 11. The upper end of the groove plate 12 is close to the lower side of the crossbeam 7. A first bolt hole 15 is opened in the middle of the lower end of the lifting frame 9. A second bolt hole 16 is opened in the middle of the support column 1. A third bolt hole 17 is opened in the middle of the support column 1 below the second bolt hole 16. A fixing bolt 18 is inserted through the interior of the second bolt hole 16 and the first bolt hole 15. A pin 19 is inserted through the rear end of the fixing bolt 18. A locking block 13 is fixedly connected to the opposite side of the upper end of the reinforcing rod 11. U-shaped plates 14 for cooperating with the locking blocks 13 are fixedly connected to the left and right sides of the upper end of the support column 1.

[0021] In the initial state, the lifting frame 9 is located at the lower part of the support column 1. At this time, the first bolt hole 15 at the lower end of the lifting frame 9 corresponds to the third bolt hole 17 in the middle of the support column 1. The fixing bolt 18 passes through it and is locked by the pin 19 to firmly fix the lifting frame 9. At this time, the reinforcing rod 11 is close to both sides of the lifting frame 9, and the locking block 13 at its upper end is embedded in the U-shaped plate 14 at the upper end of the support column 1. Through the cooperation of the locking block 13 and the U-shaped plate 14, the reinforcing rod 11 is further stored and positioned, reducing the space occupied during transportation. When it is necessary to reinforce the crossbeam 7, first pull out Remove the pin 19 from the end of the fixing bolt 18 and take the fixing bolt 18 out of the first bolt hole 15 and the third bolt hole 17 to release the fixation of the lifting frame 9. Then move the lifting frame 9 downward to separate the locking block 13 at the upper end of the reinforcing rod 11 from the U-shaped plate 14, releasing the storage limit of the reinforcing rod 11. Then rotate the reinforcing rod 11 to make it fit tightly against one side of the inner wall of the support plate 10. At this time, the reinforcing rod 11 forms a stable triangular support structure with a 45-degree angle between the support column 1 and the crossbeam 7. Utilizing the stability principle of the triangle, the load borne by the crossbeam 7 is transferred through the reinforcing rod 11. The load is efficiently transferred to the support column 1, significantly improving the structure's load-bearing capacity. After angle adjustment, the lifting frame 9 is pushed upwards, causing the reinforcing rod 11 and its top groove plate 12 to move upwards synchronously until the groove plate 12 is tightly fitted against the lower side of the crossbeam 7. At this point, the first bolt hole 15 on the lifting frame 9 precisely corresponds to the second bolt hole 16 in the middle of the support column 1. The fixing bolt 18 is then reinserted into the first bolt hole 15 and the second bolt hole 16 to fix the position of the lifting frame 9. Finally, the pin 19 is inserted into the end of the fixing bolt 18. Through the limiting action of the pin 19, the fixing bolt 18 is prevented from... Under vibration and load, the lifting frame 9 is dislodged from the bolt hole, ensuring its reliability. The reinforcing rod 11 forms a stable support link from the lifting frame 9 to the crossbeam 7, which works in conjunction with the basic connection structure of the T-block 8 and the opening 6. This not only enables the rapid assembly of the crossbeam 7 and the support column 1, but also significantly enhances the bending resistance of the crossbeam 7 and the stability of the overall structure through the adjustable reinforcing support structure. At the same time, the connection and adjustment process of each component is convenient and efficient, reducing the construction complexity of traditional welding and bolt fixing methods, and improving the construction efficiency and quality of prefabricated buildings.

[0022] Working principle: During assembly, the T-shaped block 8 at the end of the crossbeam 7 is embedded into the opening 6, thus connecting to both sides of the support column 1. Then, by adjusting the position of the lifting frame 9, the crossbeam 7 is supported by the reinforcing rod 11, improving its pressure resistance. When the lifting frame 9 is in its initial position, the first bolt hole 15 corresponds to the third bolt hole 17 on the support column 1. The fixing bolt 18 passes through the first bolt hole 15 and the third bolt hole 17. At this time, the reinforcing rod 11 is close to both sides of the lifting frame 9, and the locking block 13 is embedded inside the U-shaped plate 14. For adjustment, first pull out the pin 19 at the end of the fixing bolt 18, then pull the fixing bolt 18 out of the first bolt hole 15 and the third bolt hole 17. Pull it out of hole 17. Then, move the lifting frame 9 downward so that the locking block 13 separates from the U-shaped plate 14. Then rotate the reinforcing rod 11 so that it is in close contact with one side of the inner wall of the support plate 10. At this time, the reinforcing rod 11 forms a 45-degree angle with the support column 1 and the crossbeam 7. Then push the lifting frame 9 upward so that the reinforcing rod 11 and the slot plate 12 move upward so that the slot plate 12 is in close contact with the lower side of the crossbeam 7. At this time, the first bolt hole 15 corresponds to the second bolt hole 16 provided on the support column 1, so that the fixing bolt 18 is inserted into the first bolt hole 15 and the second bolt hole 16 to fix the lifting frame 9. Then insert the pin 19 into the end of the fixing bolt 18 to prevent the fixing bolt 18 from falling out of the first bolt hole 15.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fabricated building steel structure, characterized by, The utility model provides a support column (1), the upper end outside fixed connection of support column (1) has fixed frame (4), both sides of fixed frame (4) all are fixedly connected with connecting piece (5), the inside of connecting piece (5) is provided with opening (6), the upper end both sides of support column (1) all are provided with crossbeam (7), the opposite end of crossbeam (7) all are provided with T -shaped block (8), the outer wall of T -shaped block (8) is embedded in the inside of opening (6), the middle part of support column (1) is provided with the support subassembly for supporting crossbeam (7).

2. The prefabricated building steel structure according to claim 1, characterized in that: The support subassembly includes a lifting frame (9) that slides up and down outside the support column (1), the lifting frame (9) is fixedly connected with a supporting plate (10) on both sides, the supporting plate (10) is rotatably connected with a reinforcing rod (11) on the inner side, the reinforcing rod (11) is fixedly connected with a groove plate (12) on the top, and the upper end of the groove plate (12) is in close contact with the lower side of the crossbeam (7).

3. The prefabricated building steel structure according to claim 2, characterized in that: The lower end of the lifting frame (9) is provided with a first bolt hole (15) in the middle.

4. The prefabricated building steel structure according to claim 1, characterized in that: The middle of the support column (1) is provided with a second bolt hole (16), and the middle of the support column (1) is provided with a third bolt hole (17) below the second bolt hole (16).

5. The prefabricated building steel structure according to claim 4, characterized in that: The second bolt hole (16) and the first bolt hole (15) are provided with a fixing bolt (18) therein, and the rear end of the fixing bolt (18) is provided with a latch (19).

6. The prefabricated building steel structure according to claim 2, characterized in that: The upper end of the reinforcing rod (11) is fixedly connected with a clamping block (13) on one side.

7. The prefabricated building steel structure according to claim 1, characterized in that: The upper end of the support column (1) is fixedly connected with a U-shaped plate (14) on both sides for cooperation with the clamping block (13).

8. The prefabricated building steel structure according to claim 1, characterized in that: The bottom of the support column (1) is fixedly connected with a bottom plate (2), and the four corners of the bottom plate (2) are provided with through holes (3).

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