A steel structure assembly system and construction method for prefabricated buildings

Abstract

The present application relates to a steel structure assembly system and a construction method for prefabricated buildings, belonging to the technical field of steel structure buildings. It includes vertical rods and horizontal rods. Connection blocks are arranged on the horizontal rods, and connection grooves for inserting the connection blocks are opened at the ends of the vertical rods. The connection blocks are in the shape of rectangular bodies, and abutting plates are slidably arranged on the rectangular surfaces of the connection blocks facing the side walls of the connection grooves. The sliding direction of the abutting plates is perpendicular to the corresponding rectangular surfaces. The assembly system further includes a driving member, which is used to drive the abutting plates to slide and abut against the side walls of the connection grooves after the connection blocks enter the connection grooves. The assembly system also includes a cross tie rod, which straddles the opening of the connection groove and is used to drive the opposite side walls of the connection groove to have a tendency to approach each other when the mutually facing side walls of the connection groove are separated from each other. The present application has the effect of improving the stability of steel member buildings.

Description

Technical Field

[0001] This application relates to the technical field of steel structure buildings, and in particular to a steel structure assembly system and construction method for prefabricated buildings. Background Art

[0002] A steel structure is a structure composed of steel materials and is one of the main building structure types. The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of sections and steel plates, and rust removal and anti-rust processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are adopted. Because of its light self-weight and simple construction, it is widely used in large factories, stadiums, super high-rise buildings and other fields. In traditional steel structure assembly systems, components or parts are usually connected by welds, bolts or rivets, and the connection method is simple.

[0003] Currently, a patent application document with the publication number of CN113073738A discloses a steel structure assembly system for prefabricated buildings, including a vertical rod and a horizontal rod. The horizontal rod is arranged above the vertical rod. Two connecting blocks are symmetrically and fixedly connected to the lower side of the horizontal rod. A connecting groove is arranged on the upper side of the vertical rod. The connecting groove and the connecting block are matched. Two connecting grooves identical to the upper side of the vertical rod are symmetrically arranged on the upper side of the horizontal rod. A connecting block identical to the upper side of the horizontal rod is fixedly connected to the lower side of the vertical rod. A connecting hole is arranged on the side wall of the connecting block. A control groove is arranged on the inner side wall of the connecting groove. A connecting rod is arranged in the control groove. The connecting rod is connected to the connecting groove through a fixing device. The connecting rod penetrates through the control groove and the side wall of the connecting groove. The connecting rod and the connecting hole are matched.

[0004] Regarding the above related technologies, the inventor believes that there are the following defects: The vertical rod and the horizontal rod are connected by clamping and matching of the connecting block and the connecting groove. There are inevitably gaps between the connecting block and the connecting groove. When the steel structure building is built to a relatively high height, there is a possibility of shaking of the steel structure building. Summary of the Invention

[0005] To improve the stability of steel structure buildings, this application provides a steel structure assembly system and construction method for prefabricated buildings.

[0006] In the first aspect, a steel structure assembly system for prefabricated buildings provided by this application adopts the following technical solutions:

[0007] A steel structure assembly system for prefabricated buildings, comprising vertical rods and horizontal rods. Connection blocks are arranged on the horizontal rods. Connection grooves for inserting the connection blocks are formed at the ends of the vertical rods. The connection blocks are in the shape of rectangular bodies. Abuttment plates are slidably arranged on the rectangular surfaces of the connection blocks facing the side walls of the connection grooves. The sliding direction of the abutment plates is perpendicular to the corresponding rectangular surfaces. The assembly system further comprises a driving member, which is used to drive the abutment plates to slide and abut against the side walls of the connection grooves after the connection blocks enter the connection grooves. The assembly system further comprises a cross tie rod, which spans the opening of the connection groove and is used to drive the opposite side walls of the connection groove to have a tendency to approach each other when the opposite side walls of the connection groove face away from each other.

[0008] By adopting the above technical solution, when connecting the vertical rods and the horizontal rods, the connection blocks are inserted into the connection grooves. After the connection blocks are moved into the connection grooves, the driving member is used to drive the abutment plates to slide. The abutment plates slide to abut against the side walls of the connection grooves, filling the gaps between the connection blocks and the connection grooves, so as to reduce the gaps between the connection blocks and the connection grooves, thereby improving the stability of the steel structure building. At the same time, after the gaps between the connection blocks and the connection grooves are eliminated, the steel structure building becomes an integral whole, further improving the stability of the steel structure building. After the steel structure building is formed, when the horizontal rod is pushed by an external force, the extrusion force of the connection block on the side wall of the connection groove is relatively large. Due to the existence of the connection groove, the end of the vertical rod is prone to bending, and at the same time, the integrity of the vertical rod is damaged, resulting in poor structural stability of the vertical rod. After the connection block enters the connection groove, the cross tie rod is installed on the vertical rod to make the cross tie rod span the opening of the connection groove. The cross tie rod passes through the connection groove and is fixed on the vertical rod, playing a role in connecting and strengthening the opposite side walls of the connection groove, so as to reduce the possibility of bending of the side walls of the connection groove, improve the structural stability of the vertical rod and improve the stability of the steel structure building.

[0009] Optionally, the driving member includes a driving rod slidably arranged in the connection block. The driving rod is located on the surface of the connection block facing away from the horizontal rod. The sliding direction of the driving rod is perpendicular to the bottom wall of the connection groove. A conical block is arranged at the end of the driving rod located inside the connection block. An abutment rod is arranged on the surface of the abutment plate facing away from the connection groove. The end of the abutment rod facing away from the abutment plate abuts against the arc surface of the conical block.

[0010] By adopting the above technical solution, during the process of moving the connection block into the connection groove, the driving rod abuts against the bottom wall of the connection groove. The driving rod moves towards the inside of the connection block. During the movement of the driving rod, one end of the conical head is driven. The conical head moves to push the abutment rod to slide. The sliding of the abutment rod drives the abutment plate to slide out and abut against the side wall of the connection groove. The operation is simple and convenient. At the same time, under the action of the gravity of the steel structure member, the horizontal rod is pressed against the vertical rod, reducing the movement tendency of the driving rod towards the bottom wall of the connection groove under the reaction force of the abutment plate, and improving the connection stability between the connection block and the connection groove.

[0011] Optionally, the driving rod includes a sleeve rod and a sliding rod slidably sleeved in the sleeve rod, the conical block is arranged on the sleeve rod, the sleeve rod is provided with a fixing member, the fixing member is used to fix the sliding rod to drive the sleeve rod to slide, and when the abutment plate is pressed against the side wall of the connecting groove, the end of the sliding rod is flush with the bottom surface of the connecting block.

[0012] By adopting the above technical solution, when the driving rod drives the abutment plate to abut against the side wall of the connecting groove, the abutment plate first abuts against the side wall of the connecting groove and the driving rod is not received in the connecting block. At this time, the driving rod contacts between the vertical rod and the horizontal rod, causing the vertical rod to be subjected to greater force; when the movement distance of the driving rod is greater than the distance of the abutment plate, the sliding rod is slid to receive the sliding rod into the sleeve rod, and then the sliding rod is fixed to the above by the fixing member. At this time, the distance of the sleeve rod is adapted to the distance of the abutment plate, so that when the connecting block is received in the connecting groove, the abutment plate abuts against the side wall of the connecting groove to fill the gap between the connecting block and the connecting groove.

[0013] Optionally, the fixing member includes a fixing rod slidably disposed on the sleeve rod, the sliding direction of the fixing rod is perpendicular to the length direction of the sleeve rod, the sleeve rod is provided with a first through hole for the fixing rod to slide into the sleeve rod, and the end of the sliding rod close to the sleeve rod abuts against the fixing rod.

[0014] By adopting the above technical solution, when fixing the position of the sliding rod, the fixing rod is inserted into the first through hole so that the fixing rod enters the interior of the sleeve rod, and then the sliding rod is slid, and the end of the sliding rod abuts against the fixing rod to fix the position of the sliding rod. Then, the horizontal rod is pressed, and the sliding rod pushes the sleeve rod into the interior of the connecting block to push the abutment plate to slide out. The operation is simple and convenient.

[0015] Optionally, a plurality of the first through holes are provided, and the plurality of the first through holes are evenly arranged along the length of the sleeve rod.

[0016] By adopting the above technical solution, the first through holes are evenly arranged along the length direction of the sleeve rod, so that the fixing rod can adjust its position on the sleeve rod to ensure that the travel distance of the conical block is compatible with the travel distance of the abutment plate, thereby ensuring that the abutment plate eliminates the gap while the sliding rod is stored in the connecting block.

[0017] Optionally, the transverse tie rod is slidably arranged on the vertical rod, a second through hole for the transverse tie rod to pass through is opened on the connecting block, a first nut is fixedly arranged on the surface of the connecting groove facing the transverse tie rod, and a threaded section threadedly connected to the first nut is arranged on the transverse tie rod; a locking nut is arranged on the transverse tie rod and on one side outside the connecting groove, the locking nut is threadedly connected to the transverse tie rod, and the locking nut abuts against the side wall of the vertical rod.

[0018] By adopting the above technical solution, when the cross tie rod reinforces the opening of the connecting groove, insert the cross tie rod onto the vertical rod and make the cross tie rod pass through the second through hole. After the cross tie rod abuts against the port of the first nut, rotate the cross tie rod so that the cross tie rod enters the first nut; then screw the tightening nut onto the cross tie rod to complete the fixation of the cross tie rod, and the operation is simple and convenient.

[0019] Optionally, a limiting rod is slidably arranged on the end face of the first nut facing away from the tightening nut, the sliding direction of the limiting rod is perpendicular to the axial direction of the cross tie rod, a long strip groove is formed on the cross tie rod, the limiting rod is slidably clamped in the long strip groove, and an elastic member for driving the limiting rod to slide into the long strip groove is further arranged on the first nut.

[0020] By adopting the above technical solution, during the process of screwing the tightening nut onto the cross tie rod, it is easy to cause the cross tie rod to rotate, resulting in a short threaded connection stroke between the cross tie rod and the first nut; after the cross tie rod passes through the first nut, when the limiting rod aligns with the long strip groove, under the action of the elastic member, the limiting rod slides into the long strip groove to complete the fixation of the cross tie rod, improving the connection stability between the cross tie rod and the first nut.

[0021] Optionally, the elastic member includes a spring arranged on the first nut. When the limiting rod aligns with the long strip groove, the spring drives the limiting rod to slide into the long strip groove.

[0022] By adopting the above technical solution, during the process of the cross tie rod entering the first nut, the cross tie rod abuts against the end of the limiting rod and drives the limiting rod to move in the direction away from the limiting rod, and the spring is in a compressed process. When the limiting rod aligns with the long strip groove, under the action of the spring force, the limiting rod slides into the long strip groove, and the operation is simple and convenient.

[0023] Optionally, a locking nut is threadedly connected to the cross tie rod, the locking nut abuts against the end face of the tightening nut, and the locking nut and the tightening nut have opposite helix directions.

[0024] By adopting the above technical solution, under the action of the locking nut, the possibility of the tightening nut rotating is reduced, and the acting effect of the cross tie rod on the vertical rod is improved.

[0025] In a second aspect, the present application provides a steel structure construction method for prefabricated buildings, adopting the following technical solutions:

[0026] Optionally, a steel structure construction method for prefabricated buildings, using a steel structure assembly system for prefabricated buildings, further includes:

[0027] S1: Select an appropriate number of vertical rods and horizontal rods, and insert the connecting blocks on the horizontal rods into the connecting grooves on the vertical rods;

[0028] S2: Insert the connection block in front of the connection groove, and adjust the position of the fixing rod according to the distance between the abutment plate and the side wall of the connection groove to ensure that when the abutment plate abuts against the side wall of the connection groove, the end surface of the sliding rod is flush with the bottom surface of the connection block;

[0029] S3: Move the connecting block into the connecting groove, the sliding rod abuts against the bottom wall of the connecting groove, driving the sleeve rod to slide, and the conical block abuts against the driving rod to drive the abutting plate to slide and abut against the side wall of the connecting groove;

[0030] S4: The tie rod is then passed through the opening of the connecting groove. When the end of the tie rod abuts against the opening of the first nut, the tie rod is rotated so that the tie rod is threadedly connected to the first nut and the tie rod completely passes through the first nut.

[0031] S5: When the limiting rod is aligned with the long strip groove, the limiting rod slides into the long strip groove to limit the rotation of the tie rod;

[0032] S6: Then, the abutting nut is screwed into the horizontal tie rod, so that the abutting nut abuts against the vertical rod, and the end surface of the abutting nut abutting against the vertical rod has a tendency to bend toward the connecting groove;

[0033] S7: Then screw the locking bolt onto the tie rod, and the locking bolt presses against the locking nut to limit the return movement of the locking nut.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. When connecting the vertical rod and the horizontal rod, the connecting block is inserted into the connecting groove. When the connecting block is moved into the connecting groove, the abutment plate is driven to slide by the driving member. The abutment plate slides to abut against the side wall of the connecting groove to fill the gap between the connecting block and the connecting groove, thereby reducing the gap between the connecting block and the connecting groove, thereby improving the stability of the steel structure building;

[0036] 2. At the same time, after the gap between the connecting block and the connecting groove is eliminated, the steel structure building becomes a whole, which further improves the stability of the steel structure building; after the steel structure building is formed, when the horizontal rod is pushed by external force, the connecting block exerts a large extrusion force on the side wall of the connecting groove. Due to the existence of the connecting groove, the end of the vertical rod is prone to bending. At the same time, the integrity of the vertical rod is destroyed, resulting in poor structural stability of the vertical rod. After the connecting block enters the connecting groove, the transverse tie rod is installed on the vertical rod so that the transverse tie rod spans the opening of the connecting groove. After passing through the connecting groove, the transverse tie rod is fixed on the vertical rod, which plays a role in connecting and reinforcing the opposite side walls of the connecting groove, so as to reduce the possibility of bending of the side walls of the connecting groove, thereby improving the structural stability of the vertical rod and improving the stability of the steel structure building. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1It is a schematic diagram of the overall structure of a steel structure assembly system for prefabricated buildings according to an embodiment of the present application;

[0038] Figure 2 It is an exploded view of a vertical rod and a horizontal rod in a steel structure assembly system for prefabricated buildings according to an embodiment of the present application;

[0039] Figure 3 It is a cross-sectional view of a steel structure assembly system for prefabricated buildings according to an embodiment of the present application;

[0040] Figure 4 It is Figure 3 an enlarged view of part A in

[0041] Figure 5 It is Figure 4 an enlarged view of part B in

[0042] Explanation of reference numerals: 1, vertical rod; 2, horizontal rod; 3, connecting block; 4, connecting groove; 5, abutting plate; 6, sliding groove;

[0043] 7, driving rod; 71, sleeve rod; 72, sliding rod;

[0044] 8, tapered block; 9, abutting rod; 10, fixed rod; 11, first through hole; 12, cross tie rod; 13, second through hole; 14, first nut; 15, tightening nut; 16, limiting rod; 17, long strip groove; 18, spring; 19, locking nut. Detailed implementation manners

[0045] The following further Figures 1-5 elaborates on the present application with reference to the attached

[0046] An embodiment of the present application discloses a steel structure assembly system for prefabricated buildings. Referring to Figure 1 , the steel structure assembly system for prefabricated buildings includes a vertical rod 1 and a horizontal rod 2. A connecting block 3 is arranged on the horizontal rod 2, and a connecting groove 4 for inserting the connecting block 3 is formed at the end of the vertical rod 1;

[0047] Referring to Figure 3 and Figure 4 , in the embodiment of the present application, the connecting block 3 is in a rectangular shape. Abutting plates 5 are slidably arranged on the rectangular surfaces of the connecting block 3 facing the side walls of the connecting groove 4. Further, sliding grooves 6 for the abutting plates 5 to slide are formed on the rectangular surfaces of the connecting block 3. The openings of the sliding grooves 6 face the side walls of the connecting groove 4, and the sliding direction of the abutting plates 5 is perpendicular to the rectangular surfaces where they are located. The assembly system further includes a driving member, which is used to drive the abutting plates 5 to slide and abut against the side walls of the connecting groove 4 after the connecting block 3 enters the connecting groove 4.

[0048] When the vertical rod 1 and the horizontal rod 2 are installed and connected, the connecting block 3 is inserted into the connecting groove 4, and the connecting block 3 is received on the bottom wall of the connecting groove 4. Then, the driving member is used to drive the abutting plate 5 to slide out of the sliding groove 6 and abut against the side wall of the connecting groove 4, filling the gap between the connecting block 3 and the connecting groove 4 to improve the stability of the steel structure building.

[0049] Referring to Figure 3 and Figure 4 In the embodiment of the present application, the driving member includes a driving rod 7 slidably disposed in the connecting block 3. The driving rod 7 is located on the surface of the connecting block 3 facing away from the horizontal rod 2. The sliding direction of the driving rod 7 is perpendicular to the bottom wall of the connecting groove 4. A tapered block 8 is provided at the end of the driving rod 7 located in the connecting block 3. The vertical cross-section of the tapered block 8 is triangular. An abutting rod 9 is provided on the surface of the abutting plate 5 facing away from the connecting groove 4. The end of the abutting rod 9 facing away from the abutting plate 5 abuts against the arc surface of the tapered block 8. During the process of the connecting block 3 entering the connecting groove 4, the driving rod 7 abuts against the bottom wall of the connecting groove 4 and slides into the connecting block 3. The driving rod 7 drives the tapered block 8 to slide, and the tapered block 8 drives the abutting rod 9 to slide, thereby pushing the abutting plate 5 to slide out of the sliding groove 6 and abut against the side wall of the connecting groove 4.

[0050] Referring to Figure 3 and Figure 4 In the embodiment of the present application, to ensure that when the abutting plate 5 abuts tightly against the side wall of the connecting groove 4, the connecting block 3 is received on the bottom wall of the connecting groove 4, the driving rod 7 includes a sleeve rod 71 and a sliding rod 72 slidably sleeved in the sleeve rod 71. The tapered block 8 is fixedly provided at the end of the sleeve rod 71. The sleeve rod 71 is provided with a fixing member for fixing the sliding rod 72 to drive the sleeve rod 71 to slide. When the abutting plate 5 abuts tightly against the side wall of the connecting groove 4, the end of the sliding rod 72 is flush with the bottom surface of the connecting block 3. In the embodiment of the present application, the fixing member includes a fixing rod 10 slidably disposed on the sleeve rod 71. The sliding direction of the fixing rod 10 is perpendicular to the length direction of the sleeve rod 71. A first through hole 11 for the fixing rod 10 to slide into the sleeve rod 71 is provided on the sleeve rod 71. Further, the first through hole 11 penetrates through the sleeve rod 71 to facilitate the fixing rod 10 to straddle the sleeve rod 71. The end of the sliding rod 72 close to the sleeve rod 71 abuts against the fixing rod 10.

[0051] Adjust the position of the end of the sliding rod 72 in the sleeve rod 71 so that the travel distance of the sliding rod 72 driving the sleeve rod 71 is adapted to the travel distance of the abutting plate 5. Then, insert the fixing rod 10 into the first through hole 11 and make the fixing rod 10 pass through the sleeve rod 71 and enter the corresponding first through hole 11. At this time, the end of the sliding rod 72 abuts against the fixing rod 10 to complete the fixing of the sliding rod 72. The operation is simple and convenient.

[0052] Referring to Figure 3 and Figure 4In order to increase the adjustment range of the position of the fixing rod 10 , a plurality of first through holes 11 are provided, and the plurality of first through holes 11 are evenly arranged along the length of the sleeve rod 71 .

[0053] Reference Figure 3 and Figure 4 In the embodiment of the present application, the assembly system further includes a transverse tie rod 12, which is cylindrical and spans the opening of the connecting groove 4. The transverse tie rod 12 is used to drive the opposite side walls of the connecting groove 4 to have a tendency to approach each other when the side walls of the connecting groove 4 face each other and face away from each other. Furthermore, the transverse tie rod 12 is slidably arranged on the vertical rod 1, and the sliding direction of the transverse tie rod 12 is perpendicular to the length direction of the vertical rod 1. A second through hole 13 for the transverse tie rod 12 to pass through is provided on the connecting block 3. A first nut 14 is fixedly arranged on the surface of the connecting groove 4 facing the transverse tie rod 12, and a threaded section threadedly connected to the first nut 14 is provided on the transverse tie rod 12;

[0054] Reference Figure 3 and Figure 4 A locking nut 15 is provided on the side of the tie rod 12 outside the connecting groove 4 . The locking nut 15 is threadedly connected to the tie rod 12 , and the locking nut 15 abuts against the side wall of the vertical rod 1 .

[0055] When the transverse tie rod 12 reinforces the vertical rod 1, the transverse tie rod 12 is inserted into the vertical rod 1, so that the transverse tie rod 12 passes through the second through hole 13 and moves toward the side wall of the connecting groove 4. When the transverse tie rod 12 abuts against the first nut 14, the transverse tie rod 12 is rotated so that the transverse tie rod 12 enters the first nut 14, thereby completing the fixation of one end of the transverse tie rod 12; then the tightening nut 15 is screwed into the transverse tie rod 12, and the tightening nut 15 is rotated until it abuts against the side wall of the vertical rod 1, thereby completing the reinforcement of the vertical rod 1, reducing the possibility of bending of the side wall of the connecting groove 4 under the action of external force, and further improving the stability of the steel structure building.

[0056] Reference Figure 4 and Figure 5 In order to reduce the possibility of the locking nut 15 driving the tie rod 12 to rotate during the installation process, a limiting rod 16 is provided on the first nut 14 so as to slide away from the end surface of the locking nut 15. The sliding direction of the limiting rod 16 is perpendicular to the axial direction of the tie rod 12. A long strip groove 17 is provided on the tie rod 12. The limiting rod 16 is slidably engaged in the long strip groove 17. The first nut 14 is also provided with an elastic member for driving the limiting rod 16 to slide into the long strip groove 17. The elastic member includes a spring 18 provided on the first nut 14. One end of the spring 18 is provided on the first nut 14 and the other end is provided on the limiting rod 16. When the limiting rod 16 is aligned with the long strip groove 17, the spring 18 drives the limiting rod 16 to slide into the long strip groove 17.

[0057] After the end of the cross tie rod 12 enters the first nut 14, the end of the cross tie rod 12 abuts against the end of the limiting rod 16, driving the limiting rod 16 to move in a direction away from the cross tie rod 12 to compress the spring 18; when the cross tie rod 12 rotates to align the long strip groove 17 with the limiting rod 16, under the action of the elastic force of the spring 18, the limiting rod 16 enters the long strip groove 17 to complete the fixation of the cross tie rod 12, reducing the possibility of the cross tie rod 12 rotating.

[0058] Referring to Figure 4 and Figure 5 , to reduce the possibility of the tightening nut 15 rotating under the extrusion of the connecting block 3 against the connecting groove 4, a locking nut 19 is threadedly connected to the cross tie rod 12. The locking nut 19 abuts against the end face of the tightening nut 15, and the locking nut 19 has a reverse helix direction to that of the tightening nut 15; the locking nut 19 abuts against the end of the tightening nut 15, reducing the possibility of the tightening nut 15 rotating.

[0059] The implementation principle of an embodiment of the steel structure assembly system for prefabricated buildings in this application is as follows:

[0060] When building a steel member building, after fixing the vertical rod 1, install the horizontal rod 2 on the vertical rod 1. At this time, insert the connecting block 3 into the connecting groove 4;

[0061] Before inserting the connecting block 3 into the connecting groove 4, adjust the position of the sliding rod 72 in the sleeve rod 71, and then slide the fixing rod 10 so that the fixing rod 10 straddles the sleeve rod 71;

[0062] Subsequently, move the connecting block 3 into the connecting groove 4. At this time, the sliding rod 72 first abuts against the bottom wall of the connecting groove 4, and the sliding rod 72 slides into the sleeve rod 71. When the sliding rod 72 abuts against the fixing rod 10, it drives the sleeve rod 71 to slide into the interior of the connecting block 3 to drive the conical head to slide, thereby driving the abutting plate 5 to slide out and abut against the side wall of the connecting groove 4;

[0063] Then pass the cross tie rod 12 through the vertical rod 1, make the cross tie rod 12 pass through the second through hole 13, and move towards the side wall of the connecting groove 4. When the cross tie rod 12 abuts against the first nut 14, rotate the cross tie rod 12 so that the cross tie rod 12 enters the first nut 14 to complete the fixation of one end of the cross tie rod 12; then screw the tightening nut 15 onto the cross tie rod 12, and rotate the tightening nut 15 until it abuts against the side wall of the vertical rod 1 to complete the reinforcement of the vertical rod 1, reducing the possibility of the side wall of the connecting groove 4 bending under the action of external forces and improving the stability of the steel member building. Subsequently, screw the locking bolt onto the cross tie rod 12 to complete the connection between the vertical rod 1 and the cross tie rod 12.

[0064] An embodiment of this application discloses a construction method for the steel structure of a prefabricated building. Referring to Figure 1, the steel structure construction method of the prefabricated building uses the steel structure assembly system of the prefabricated building, and further includes:

[0065] S1: Select an appropriate number of vertical rods 1 and horizontal rods 2, and insert the connecting blocks 3 on the horizontal rods 2 into the connecting grooves 4 on the vertical rods 1;

[0066] S2: Before inserting the connecting block 3 into the connecting groove 4, adjust the position of the fixing rod 10 according to the distance between the abutting plate 5 and the side wall of the connecting groove 4, so as to ensure that when the abutting plate 5 abuts against the side wall of the connecting groove 4, the end face of the sliding rod 72 is flush with the bottom surface of the connecting block 3;

[0067] S3: Move the connecting block 3 into the connecting groove 4, the sliding rod 72 abuts against the bottom wall of the connecting groove 4, drives the sleeve rod 71 to slide, and the conical block 8 abuts against the driving rod 7 to drive the abutting plate 5 to slide and abut against the side wall of the connecting groove 4;

[0068] S4: Then horizontally cross the opening of the connecting groove 4 with the cross tie rod 12. When the end of the cross tie rod 12 abuts against the opening of the first nut 14, rotate the cross tie rod 12 so that the cross tie rod 12 is threadedly connected in the first nut 14 and the cross tie rod 12 completely passes through the first nut 14;

[0069] S5: When the limiting rod 16 is aligned with the long strip groove 17, the limiting rod 16 slides into the long strip groove 17 to limit the rotation of the cross tie rod 12;

[0070] S6: Then screw the tightening nut 15 onto the cross tie rod 12 so that the tightening nut 15 abuts against the vertical rod 1 and the end face of the tightening nut 15 abutting against the vertical rod 1 has a tendency to bend towards the connecting groove 4;

[0071] S7: Then screw the locking bolt onto the cross tie rod 12, and the locking bolt abuts against the tightening nut 15 to limit the backward movement of the tightening nut 15.

[0072] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A steel structure assembly system for prefabricated buildings, comprising a vertical rod (1) and a horizontal rod (2). A connecting block (3) is provided on the horizontal rod (2), and a connecting groove (4) for inserting the connecting block (3) is formed at the end of the vertical rod (1), characterized in that: The connecting block (3) is in the form of a rectangular body, and abutment plates (5) are slidably arranged on the rectangular surfaces of the connecting block (3) facing the side walls of the connecting groove (4), and the sliding direction of the abutment plates (5) is perpendicular to the rectangular surfaces. The assembly system further comprises a driving member, and the driving member is used to drive the abutment plates (5) to slide and abut against the side walls of the connecting groove (4) after the connecting block (3) enters the connecting groove (4); the assembly system further comprises a transverse tie rod (12), and the transverse tie rod (12) spans the opening of the connecting groove (4). The transverse tie rod (12) is used to drive the opposite side walls of the connecting groove (4) to have a tendency to approach each other when the opposite side walls of the connecting grooves (4) are away from each other. The driving member comprises a driving rod (7) slidably arranged in the connecting block (3); the driving rod (7) is located on a surface of the connecting block (3) facing away from the horizontal rod (2); the sliding direction of the driving rod (7) is perpendicular to the bottom wall of the connecting groove (4); a conical block (8) is arranged at the end of the driving rod (7) located in the connecting block (3); an abutting rod (9) is arranged on a surface of the abutting plate (5) facing away from the connecting groove (4); and the end of the abutting rod (9) facing away from the abutting plate (5) abuts against the arc surface of the conical block (8); The driving rod (7) comprises a sleeve rod (71) and a sliding rod (72) slidably sleeved in the sleeve rod (71); the conical block (8) is arranged on the sleeve rod (71); the sleeve rod (71) is provided with a fixing member, and the fixing member is used to fix the sliding rod (72) to drive the sleeve rod (71) to slide; when the abutment plate (5) abuts against the side wall of the connecting groove (4), the end of the sliding rod (72) is flush with the bottom surface of the connecting block (3).

2. The steel structure assembly system for prefabricated buildings according to claim 1, wherein: The fixing member comprises a fixing rod (10) slidably arranged on the sleeve rod (71); the sliding direction of the fixing rod (10) is perpendicular to the length direction of the sleeve rod (71); the sleeve rod (71) is provided with a first through hole (11) for the fixing rod (10) to slide into the sleeve rod (71); and the end of the sliding rod (72) close to the sleeve rod (71) abuts against the fixing rod (10).

3. The steel structure assembly system for prefabricated buildings according to claim 2, characterized in that: A plurality of the first through holes (11) are provided, and the plurality of the first through holes (11) are evenly arranged along the length of the sleeve rod (71).

4. A steel structure assembly system for prefabricated buildings according to claim 1, characterized in that: The tie rod (12) is slidably arranged on the vertical rod (1); a second through hole (13) for the tie rod (12) to pass through is opened on the connecting block (3); a first nut (14) is fixedly arranged on the surface of the connecting groove (4) facing the tie rod (12); a threaded section threadedly connected to the first nut (14) is arranged on the tie rod (12); a locking nut (15) is arranged on one side of the tie rod (12) outside the connecting groove (4); the locking nut (15) is threadedly connected to the tie rod (12), and the locking nut (15) abuts against the side wall of the vertical rod (1).

5. A steel structure assembly system for prefabricated buildings according to claim 4, characterized in that: A limiting rod (16) is slidably arranged on the end face of the first nut (14) facing away from the abutting nut (15). The sliding direction of the limiting rod (16) is perpendicular to the axial direction of the cross tie rod (12). A long slot (17) is formed in the cross tie rod (12). The limiting rod (16) is slidably clamped in the long slot (17). An elastic member for driving the limiting rod (16) to slide into the long slot (17) is further arranged on the first nut (14).

6. The steel structure assembly system for prefabricated buildings according to claim 5, characterized in that: The elastic member includes a spring (18) arranged on the first nut (14). When the limiting rod (16) is aligned with the long slot (17), the spring (18) drives the limiting rod (16) to slide into the long slot (17).

7. A steel structure assembly system for prefabricated buildings according to claim 4, characterized in that: A locking nut (19) is threadedly connected to the cross tie rod (12). The locking nut (19) abuts against the end face of the abutting nut (15). The locking nut (19) and the abutting nut (15) have opposite helix directions.

8. A construction method for the steel structure of an assembled building, characterized in that: When using the steel structure assembly system of a prefabricated building according to any one of claims 1-7, it further includes: S1: Select an appropriate number of vertical rods (1) and horizontal rods (2), and insert the connecting blocks (3) on the horizontal rods (2) into the connecting grooves (4) on the vertical rods (1). S2: Before inserting the connecting block (3) into the connecting groove (4), adjust the position of the fixing rod (10) according to the distance between the abutting plate (5) and the side wall of the connecting groove (4) to ensure that when the abutting plate (5) abuts against the side wall of the connecting groove (4), the end face of the sliding rod (72) is flush with the bottom surface of the connecting block (3). S3: Move the connecting block (3) into the connecting groove (4). The sliding rod (72) abuts against the bottom wall of the connecting groove (4), driving the sleeve rod (71) to slide. The tapered block (8) abuts against the driving rod (7) to drive the abutting plate (5) to slide and abut against the side wall of the connecting groove (4). S4: Then pass the cross tie rod (12) through the opening of the connecting groove (4). When the end of the cross tie rod (12) abuts against the opening of the first nut (14), rotate the cross tie rod (12) to threadedly connect the cross tie rod (12) into the first nut (14) and make the cross tie rod (12) completely pass through the first nut (14). S5: When the limiting rod (16) is aligned with the long slot (17), the limiting rod (16) slides into the long slot (17) to limit the rotation of the cross tie rod (12). S6: Then screw the abutting nut (15) onto the cross tie rod (12) so that the abutting nut (15) abuts against the vertical rod (1) and the end face of the abutting nut (15) abutting against the vertical rod (1) has a tendency to bend towards the connecting groove (4). S7: Then screw the locking bolt onto the cross tie rod (12). The locking bolt abuts against the abutting nut (15) to limit the backward movement of the abutting nut (15).

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