A spliced ​​prefabricated beam-column structure and its construction method

Abstract

This application relates to the field of structural construction, and in particular to a prefabricated beam-column structure and its construction method. The prefabricated beam-column structure includes a structural column, a protruding column, multiple limiting rods, a drive disc, and a crossbeam. The protruding column is connected to the periphery of the structural column. Multiple first arc-shaped grooves are formed at the ends of the protruding column away from the structural column, and the ends of the limiting rods are slidably connected to the first arc-shaped grooves. The drive disc is rotatably connected to the ends of the protruding column away from the structural column. Multiple second arc-shaped grooves are formed through the surface of the drive disc. When the drive disc rotates relative to the protruding column, the multiple limiting rods converge or diffuse along the extension directions of the first and second arc-shaped grooves. A limiting groove is formed at the end of the crossbeam. The limiting groove allows multiple limiting rods to pass through. A limiting ring is provided on the inner wall of the limiting groove. A slot is formed on the side wall of the limiting rod for the limiting ring to engage. A limiting mechanism for fixing the rotational position of the drive disc is provided on the side wall of the drive disc. This application improves the problem of inconvenient assembly and disassembly of beam-column structures.

Description

Technical Field

[0001] This application relates to the field of structural construction, and in particular to a spliced ​​prefabricated beam-column structure and its construction method. Background Technology

[0002] Currently, beam-column structures are used in furniture and housing, and are typically fixed together using methods such as screw riveting or metal welding. However, both screw riveting and metal welding require auxiliary tools. When installing beam-column structures in narrow spaces, the range of motion of these tools is limited, making it inconvenient to assemble and fix the beam-column structures, resulting in difficulties in disassembling and assembling them. Summary of the Invention

[0003] To address the inconvenience of assembling and disassembling beam-column structures, this application provides a spliced ​​prefabricated beam-column structure and its construction method.

[0004] Firstly, the spliced ​​prefabricated beam-column structure provided in this application adopts the following technical solution:

[0005] A prefabricated beam-column structure includes a structural column, a protruding column, multiple limiting rods, a drive disc, and a crossbeam. The protruding column is connected to the periphery of the structural column. Multiple first arc-shaped grooves are formed at the ends of the protruding column away from the structural column, each first arc-shaped groove corresponding to one of the limiting rods. The ends of the limiting rods are slidably connected to the first arc-shaped grooves. The drive disc is rotatably connected to the ends of the protruding column away from the structural column. Multiple second arc-shaped grooves are formed through the surface of the drive disc, each second arc-shaped groove corresponding to one of the first arc-shaped grooves. The limiting rod is slidably inserted at the end away from the protrusion; when the drive disk rotates relative to the protrusion, multiple limiting rods converge or spread along the extension directions of the first arc-shaped groove and the second arc-shaped groove; a limiting groove is opened at the end of the crossbeam; the limiting groove allows multiple limiting rods to pass through; a limiting ring is provided on the inner wall of the limiting groove, and the limiting ring extends circumferentially along the crossbeam; a slot is opened on the side wall of the limiting rod, and the slot allows the limiting ring to engage; a limiting mechanism for fixing the rotation position of the drive disk is provided on the side wall of the drive disk.

[0006] By adopting the above technical solution, when installing the beam-column structure, the protruding column is first fixed at a designated position on the side wall of the structural column. Then, the drive disc is rotated, and multiple limiting rods converge toward the center of the drive disc through the first and second arc-shaped grooves. The crossbeam is then moved so that the multiple limiting rods pass through the limiting grooves. After the crossbeam abuts against the protruding column, the drive disc is rotated in the opposite direction, and the multiple limiting rods in the converged state spread out in the limiting grooves. The limiting ring is engaged in the slot. Finally, the limiting mechanism is moved to fix the rotation position of the drive disc, thus completing the operation of fixing the crossbeam to the side wall of the structural column. By using a drive disc and a limiting ring, after the structural column and beam approach each other, rotating the drive disc engages the limiting ring in the slot, achieving initial fixation of the beam and structural column. Moving the limiting mechanism then achieves final fixation. When it's necessary to separate the structural column and beam later, moving the limiting mechanism releases the restriction on the drive disc's position, allowing the drive disc to rotate and multiple limiting rods to converge in the limiting grooves, thus separating the structural column and beam. This reduces the need for auxiliary tools when installing beam-column structures in confined spaces, lowers the risk of inconvenient installation due to limited tool movement, and improves the problem of inconvenient assembly and disassembly of beam-column structures.

[0007] Optionally, the limiting mechanism includes a base rod, a connecting rod, and a plug-in rod. The base rod is fixed to the side wall of the drive disk. The two ends of the connecting rod are respectively hinged to the end of the base rod away from the drive disk and the end of the plug-in rod. The side wall of the protruding post is provided with a plug hole for the end of the plug-in rod away from the connecting rod to be inserted. When the end of the plug-in rod away from the connecting rod is inserted into the plug hole, the limiting ring is engaged in the slot.

[0008] By adopting the above technical solution, when the foundation rod, connecting rod, and plug-in rod are on the same axis, the limiting mechanism can be used to rotate the drive disk, providing a force application position for the drive disk. After the drive disk rotates to the designated position, the connecting rod and plug-in rod are flipped over, allowing the plug-in rod to insert into the insertion hole, thus fixing the rotation position of the drive disk and securing the limiting ring in the slot. Through the foundation rod, connecting rod, and plug-in rod, not only is the handle function achieved, but the position of the drive disk is also fixed, improving the functional versatility of the limiting mechanism while increasing the rotation efficiency of the drive disk, resulting in efficient beam-column structural connections.

[0009] Optionally, the inner wall of the limiting groove is inclined with a guide surface, the guide surface is for the end of the limiting rod away from the protrusion to abut against, and the guide surface is used to guide the crossbeam to approach the protrusion when multiple limiting rods are spread out in the limiting groove.

[0010] By adopting the above technical solution, when multiple limiting rods are diffused within the limiting groove, the guide surface forces the crossbeam to approach the convex column. After the crossbeam and the convex column approach each other, the problem of low overall stability of the beam-column structure caused by the gap between the crossbeam and the convex column is improved.

[0011] Optionally, a locking ring is coaxially disposed on the surface of the drive disc opposite to the protrusion, and the locking ring has an inner ring for the crossbeam to be inserted into.

[0012] By adopting the above technical solution, the introduction of the locking ring provides a bearing position for the crossbeam after it comes close to the protruding column. When multiple limiting rods are located in the limiting groove, the labor intensity of subsequent operators who need to continuously lift the crossbeam to keep it in contact with the protruding column is reduced.

[0013] Optionally, the inner sidewall of the inner ring is provided with a protruding ring, which is coaxially arranged with the locking ring, and a notch is provided through the sidewall of the protruding ring; a mating block is provided on the outer sidewall of the crossbeam, and the notch allows the mating block to pass through; a movable cavity is provided inside the protruding ring, which extends circumferentially along the locking ring and penetrates the sidewall of the notch; the locking ring is provided with a movable block that is slidably connected to the movable cavity; the movable block is used to close the notch; a movable opening is provided on the outer sidewall of the locking ring, which extends circumferentially along the locking ring and communicates with the movable cavity; an operating rod is provided on the sidewall of the movable block, and the operating rod extends out of the movable opening.

[0014] By adopting the above technical solution, when the crossbeam is inserted into the inner ring of the locking ring, the mating block on the side wall of the crossbeam first passes through the notch, so that the mating block is located within the inner ring. Then, the movable block is slid using the operating rod, and the movable block closes the notch to prevent the mating block from detaching from the locking ring. In this way, through the locking ring and the mating block, the risk of the crossbeam detaching from the structural column is reduced when the drive block rotates, providing an extra layer of protection for the connection stability between the crossbeam and the structural column, and increasing the safety measures for the connection node between the crossbeam and the structural column.

[0015] Optionally, the side wall of the operating lever is provided with a limiting member, which is used to fix the sliding position of the operating lever relative to the locking ring.

[0016] By adopting the above technical solution and introducing the limiting component, the connection stability between the movable block and the locking ring is improved, the risk of the movable block sliding during the use of the beam-column structure is reduced, and the connection stability between the beam and the structural column is further improved.

[0017] Optionally, the limiting member is an external thread provided on the outer side wall of the operating rod; the side wall of the movable block is provided with a first threaded hole, and the inner wall of the movable cavity is provided with a second threaded hole, both the first threaded hole and the second threaded hole are for the external thread to be threadedly connected; when the external thread is threadedly connected to the second threaded hole, the movable block closes the notch.

[0018] By adopting the above technical solution, after the movable block slides to the designated position, the operating rod is rotated so that the operating rod is threaded into the second threaded hole. The sliding position of the sliding block can be fixed by the operating rod. This not only shortens the operating rod exposed to the external environment and reduces the risk of external objects or personnel moving the operating rod, but also achieves the effect of fixing the position of the movable block with the operating rod.

[0019] Optionally, the second threaded hole penetrates the inner wall of the movable cavity.

[0020] By adopting the above technical solution, when the movable block slides in the movable cavity, it passes through the second threaded hole, reducing the risk of impurities accumulating in the second threaded hole and improving the service life of the second threaded hole.

[0021] Optionally, the sidewall of the structural column is provided with a sliding groove for the convex column to slide and connect, and the sliding groove extends along the axial direction of the structural column; the inner sidewalls opposite to the sliding groove are provided with displacement grooves, and the bottom of the displacement groove is provided with a rack, and the displacement groove and the rack extend along the axial direction of the structural column; a rotating shaft is provided at the end of the convex column away from the driving disk, and two displacement rods are rotatably connected to the circumference of the rotating shaft, and the two displacement rods are arranged to cross each other; the end of the limiting rod is abutted against the groove wall of the rack groove; a fixing rod is provided between the two limiting rods, and the two ends of the fixing rod are respectively threaded to the sidewalls of the two displacement rods.

[0022] By adopting the above technical solution, after determining the installation positions of the protruding column and the structural column, if the position of the protruding column needs to be fine-tuned, rotating the fixing rod will flip the displacement rod, bringing the two displacement rods closer together. This allows the protruding column to slide along the length of the groove, changing its position on the periphery of the structural column. Once the position of the protruding column is determined, the displacement rod is flipped again, so that its end abuts against the groove wall of the rack tooth groove. Then, the fixing rod is rotated, and its two ends are threaded onto the periphery of the two displacement rods, thus restricting the rotation of the displacement rods and fixing the position of the protruding column within the groove. This achieves the effect of fine-tuning the position of the protruding column on the side wall of the structural column.

[0023] Secondly, the construction method for a spliced ​​prefabricated beam-column structure provided in this application adopts the following technical solution:

[0024] A construction method for a prefabricated beam-column structure includes the following steps:

[0025] S1: Install the protruding post at the designated position on the side wall of the structural column, and rotate the drive disc to bring together the multiple limiting rods;

[0026] S2: Move the crossbeam so that multiple limiting rods extend into the limiting groove;

[0027] S3: Rotate the drive disc to spread the multiple limiting rods in the limiting groove, so that the limiting ring is engaged in the groove;

[0028] S4: Move the limiting mechanism to fix the rotation position of the drive disk.

[0029] By adopting the above technical solution, rotating the drive disc and moving the limiting mechanism, the effect of multiple limiting rods converging or spreading can be achieved. This not only fixes the beam to the side wall of the structural column, but also facilitates the subsequent separation operation between the beam and the structural column, improves the problem of inconvenient disassembly and assembly of beam-column structures, and increases the installation efficiency between beam-column structures.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. By using a drive disc and a limiting ring, after the structural column and beam approach each other, rotating the drive disc engages the limiting ring in the slot, achieving initial fixation of the beam and structural column. Then, moving the limiting mechanism achieves final fixation of the beam and structural column. When it is necessary to separate the structural column and beam later, moving the limiting mechanism releases the restriction of the fixed position of the drive disc, allowing the drive disc to be rotated so that multiple limiting rods converge in the limiting groove, thus separating the structural column and beam. In this way, when installing beam-column structures in narrow spaces, the use of auxiliary tools is reduced, the risk of inconvenience caused by the limited range of motion of auxiliary tools is reduced, and the problem of inconvenient assembly and disassembly of beam-column structures is improved.

[0032] 2. By using the base rod, connecting rod, and plug rod, not only is the function of the handle achieved, but the position of the drive disc is also fixed, which improves the functional diversity of the limit mechanism and the rotation efficiency of the drive disc, making the beam-column structure connection efficient.

[0033] 3. By using locking rings and mating blocks, the risk of the beam detaching from the structural column is reduced when the drive block rotates, providing an extra layer of protection for the connection stability between the beam and the structural column, and increasing the safety measures for the connection node between the beam and the structural column. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0035] Figure 2 This is a schematic diagram illustrating the positions of multiple limiting rods in an embodiment of this application.

[0036] Figure 3 This is a schematic diagram illustrating the state of separation between the protruding column and the structural column in an embodiment of this application.

[0037] Figure 4 yes Figure 2 Enlarged diagram of part A.

[0038] Figure 5 This is a structural schematic diagram illustrating the limiting mechanism and the convex ring in an embodiment of this application.

[0039] Figure 6 This is a structural schematic diagram of the beam used to illustrate an embodiment of this application.

[0040] Explanation of reference numerals in the attached drawings: 1. Structural column; 11. Slide groove; 12. Displacement groove; 13. Rack; 2. Protruding column; 21. Rotating shaft; 22. First arc-shaped groove; 23. Insertion hole; 3. Limiting rod; 31. Slot; 4. Drive disc; 41. Second arc-shaped groove; 5. Crossbeam; 51. Mating block; 52. Limiting groove; 53. Limiting ring; 54. Guide surface; 6. Displacement rod; 7. Fixing rod; 8. Locking ring; 81. Movable block; 811. First threaded hole; 82. Operating rod; 821. Limiting component; 83. Movable opening; 9. Protruding ring; 91. Notch; 92. Movable cavity; 93. Second threaded hole; 10. Limiting mechanism; 101. Base rod; 102. Connecting rod; 103. Insertion rod. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0042] This application discloses a splicing prefabricated beam-column structure, which aims to reduce the use of auxiliary tools and improve the problem of inconvenient assembly and disassembly of beam-column structures.

[0043] Reference Figure 1 and Figure 2 A prefabricated beam-column structure includes a structural column 1, a protruding column 2, multiple limiting rods 3, a drive disc 4, and a crossbeam 5. The protruding column 2 is movably connected to the periphery of the structural column 1, and the multiple limiting rods 3 are slidably connected to the ends of the protruding column 2 away from the structural column 1. The drive disc 4 is rotatably connected to the ends of the protruding column 2 away from the structural column 1. When the drive disc 4 rotates relative to the protruding column 2, the multiple limiting rods 3 converge towards the center of the protruding column 2 or diffuse towards the sidewall of the protruding column 2. When the multiple limiting rods 3 are in the diffused state, they fix the crossbeam 5 to the sidewall of the structural column 1.

[0044] Reference Figure 3Specifically, the sidewall of the structural column 1 is provided with a sliding groove 11, the number of which is determined according to the design drawings. The sliding groove 11 is used for sliding connection of the protruding column 2, and the sliding groove 11 extends along the axial direction of the structural column 1. The inner sidewalls opposite to the sliding groove 11 are provided with a displacement groove 12, and a rack 13 is welded and fixed to the bottom of the displacement groove 12. Both the displacement groove 12 and the rack 13 extend along the axial direction of the structural column 1.

[0045] Reference Figure 2 and Figure 3 A rotating shaft 21 is welded and fixed to the end of the protruding post 2 away from the drive disc 4. Two displacement rods 6 are rotatably connected to the circumference of the rotating shaft 21, and the two displacement rods 6 are arranged to cross each other. That is, the rotating shaft 21 is located at the position where the two displacement rods 6 intersect. The end of the limiting rod 3 is abutted by the groove wall of the rack 13. A fixing rod 7 is provided between the two limiting rods 3, and the two ends of the fixing rod 7 are threaded to the side walls of the two displacement rods 6 respectively.

[0046] Reference Figure 3 When fixing the protruding post 2 to the side wall of the structural column 1, first rotate the fixing rod 7 to flip the displacement rod 6, bringing the two displacement rods 6 closer together. This allows the protruding post 2 to slide along the length of the slide groove 11, changing its position on the periphery of the structural column 1. After the position of the protruding post 2 is determined, flip the displacement rod 6 again so that its end abuts against the groove wall of the rack 13. Then rotate the fixing rod 7 so that both ends of the fixing rod 7 are threaded to the periphery of the two displacement rods 6, thus restricting the rotation of the displacement rod 6 and fixing the position of the protruding post 2 in the slide groove 11. This not only achieves the effect of fixing the protruding post 2 to the side wall of the structural column 1, but also allows for fine-tuning of the position of the protruding post 2 on the structural column 1 during installation.

[0047] Reference Figure 4 The protruding post 2 has multiple first arc-shaped grooves 22 at its end away from the structural post 1. These grooves correspond to multiple limiting rods 3, with the ends of the limiting rods 3 slidably connected to the first arc-shaped grooves 22. The drive disc 4 has multiple second arc-shaped grooves 41 extending through its surface. These grooves correspond to the first arc-shaped grooves 22, and the ends of the limiting rods 3 away from the protruding post 2 slide through them. With this design, when the drive disc 4 rotates relative to the protruding post 2, the multiple limiting rods 3 slide along the extending directions of the first arc-shaped grooves 22 and the second arc-shaped grooves 41, achieving the effect of the multiple limiting rods 3 converging or dispersing.

[0048] Reference Figure 4 It should be noted that the structure of the limiting rod 3 is as follows: The diameter of the end face of the limiting rod 3 located in the first arc-shaped groove 22 is smaller than the diameter of the end face of the limiting rod 3 passing through the second arc-shaped groove 41. A slot 31 is provided on the side wall of the end of the limiting rod 3 passing through the second arc-shaped groove 41, and the slot 31 extends circumferentially along the limiting rod 3.

[0049] Reference Figure 5 and Figure 6 A locking ring 8 is coaxially fixed to the surface of the drive disc 4 away from the protruding post 2. The locking ring 8 has an inner ring for the crossbeam 5 to insert into, and multiple limiting rods 3 are located inside the inner ring. A protruding ring 9 is welded and fixed to the inner side wall of the inner ring, and the protruding ring 9 is coaxially arranged with the locking ring 8. A notch 91 is opened through the side wall of the protruding ring 9. The number of notches 91 can be one, two or more. A mating block 51 is welded and fixed to the outer side wall of the crossbeam 5, and the notch 91 allows the mating block 51 to pass through.

[0050] Reference Figure 5 The convex ring 9 has a movable cavity 92 inside, which extends circumferentially along the locking ring 8 and penetrates the side wall opposite the notch 91. The locking ring 8 has a movable block 81 slidably connected to the movable cavity 92, which is used to close the notch 91. The outer side wall of the locking ring 8 has a movable opening 83, which extends circumferentially along the locking ring 8 and communicates with the movable cavity 92. The side wall of the movable block 81 has an operating rod 82, which extends out of the movable opening 83 and is used to operate the sliding position of the movable block 81 within the movable cavity 92.

[0051] Reference Figure 5 The side wall of the operating lever 82 is provided with a limiting member 821, which is used to fix the sliding position of the operating lever 82 relative to the locking ring 8. The limiting member 821 can be a magnet, a rope, or an external thread. In this embodiment, the limiting member 821 is an external thread formed on the outer side wall of the operating lever 82. The side wall of the movable block 81 is provided with a first threaded hole 811, and the inner wall of the movable cavity 92 is provided with a second threaded hole 93. Both the first threaded hole 811 and the second threaded hole 93 are provided for external threaded connection. It should be noted that the second threaded hole 93 is located at the end of the movable opening 83. Thus, when the operating lever 82 abuts against the end of the movable opening 83, the operating lever 82 can be rotated to make the operating lever 82 threadedly connected to the second threaded hole 93. The movable block 81 closes the notch 91, preventing the crossbeam 5 from disengaging from the drive disc 4.

[0052] Reference Figure 4 and Figure 6 A limiting groove 52 is provided at the end of the crossbeam 5, through which multiple limiting rods 3 pass. A limiting ring 53 is welded and fixed to the inner wall of the limiting groove 52. The limiting ring 53 extends circumferentially along the crossbeam 5, and a slot 31 is provided for the limiting ring 53 to engage. It is worth noting that a guide surface 54 is inclinedly provided on the inner wall of the limiting groove 52. The guide surface 54 is used for the end of the limiting rod 3 away from the protrusion 2 to abut against. The guide surface 54 is used to guide the crossbeam 5 toward the protrusion 2 when multiple limiting rods 3 are spread out in the limiting groove 52.

[0053] Reference Figure 4 and Figure 6Since the diameter of the end face of the limiting rod 3 located in the first arc-shaped groove 22 is smaller than the diameter of the end face of the limiting rod passing through the second arc-shaped groove 41, the limiting ring 53 can easily engage with the slot 31 when the crossbeam 5 moves, achieving the engagement effect between the limiting ring 53 and the slot 31. The side wall of the drive disk 4 is provided with a limiting mechanism 10 for fixing the rotation position of the drive disk 4. Thus, moving the limiting mechanism 10 can restrict the rotation of the drive disk 4, making the limiting ring 53 securely engaged with the slot 31.

[0054] Reference Figure 4 , Figure 5 and Figure 6 The limiting mechanism 10 includes a base rod 101, a connecting rod 102, and a plug-in rod 103. The base rod 101 is welded and fixed to the side wall of the drive disk 4. The two ends of the connecting rod 102 are respectively hinged to the end of the base rod 101 away from the drive disk 4 and the end of the plug-in rod 103. The side wall of the protruding post 2 has a plug hole 23 for the end of the plug-in rod 103 away from the connecting rod 102 to be inserted. When the end of the plug-in rod 103 away from the connecting rod 102 is inserted into the plug hole 23, the limiting ring 53 is engaged in the slot 31. In other embodiments, the limiting mechanism 10 can also be a wing bolt threaded to the periphery of the drive disk 4.

[0055] Reference Figure 2 and Figure 5 When the base rod 101, connecting rod 102 and plug rod 103 are on the same axis, the limiting mechanism 10 can be used to rotate the drive disk 4, providing a force application position for the drive disk 4. After the drive disk 4 rotates to the designated position, the connecting rod 102 and plug rod 103 are flipped so that the plug rod 103 is inserted into the insertion hole 23, thus fixing the rotation position of the drive disk 4.

[0056] This application also discloses a construction method for a spliced ​​prefabricated beam-column structure.

[0057] A construction method for a prefabricated beam-column structure includes the following steps:

[0058] S1: Determine the installation position of the protruding post 2: a: Slide the end of the protruding post 2 away from the drive disk 4 to the slide groove 11; b: After the protruding post 2 has slid to the designated position, rotate the fixing rod 7. The two ends of the fixing rod 7 are respectively threaded to the periphery of the two displacement rods 6, so that the ends of the displacement rods 6 abut against the tooth groove wall of the rack 13.

[0059] S2: Initial fixation of the crossbeam 5 position: a: Hold the connecting rod 102 and rotate the drive disk 4 to bring the multiple limiting rods 3 together at the center of the protrusion 2; b: Move the crossbeam 5 and insert the end of the crossbeam 5 into the inner ring so that the multiple limiting rods 3 extend into the limiting groove 52; c: After the mating block 51 passes through the notch 91, use the operating rod 82 to slide the movable block 81; d: After the circumference of the operating rod 82 abuts against the side wall of the end of the movable opening 83, the movable block 81 closes the notch 91. Then rotate the operating rod 82 to make the operating rod 82 threadedly connected to the second threaded hole 93 to fix the sliding position of the movable block 81.

[0060] S3: Determine the fixed state of the crossbeam 5 and the structural column 1: a: Rotate the crossbeam 5 to determine the fixed position of the crossbeam 5; b: Hold the connecting rod 102 and rotate the drive disk 4 to make the multiple limiting rods 3 spread out in the limiting groove 52, so that the limiting ring 53 is engaged in the slot 31.

[0061] S4: Fix the crossbeam 5 and the structural column 1: a: Flip the connecting rod 102 and the plug rod 103, and insert the plug rod 103 into the plug hole 23 on the side wall of the protruding column 2.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spliced ​​prefabricated beam-column structure, characterized in that: The system includes a structural column (1), a protruding column (2), multiple limiting rods (3), a drive disc (4), and a crossbeam (5); the protruding column (2) is connected to the periphery of the structural column (1); the end of the protruding column (2) away from the structural column (1) is provided with multiple first arc-shaped grooves (22), and the multiple first arc-shaped grooves (22) correspond to multiple limiting rods (3); the end of the limiting rod (3) is slidably connected to the first arc-shaped groove (22); the drive disc (4) rotates. The drive disc (4) is connected to the end of the protruding post (2) away from the structural post (1); the surface of the drive disc (4) is provided with a plurality of second arc-shaped grooves (41), the plurality of second arc-shaped grooves (41) corresponding to a plurality of first arc-shaped grooves (22); the second arc-shaped grooves (41) allow the end of the limiting rod (3) away from the protruding post (2) to slide through; when the drive disc (4) rotates relative to the protruding post (2), the plurality of limiting rods (3) move along the first arc-shaped grooves. (22) and the second arc-shaped groove (41) converge or diffuse in their extending directions; a limiting groove (52) is provided at the end of the crossbeam (5); the limiting groove (52) allows multiple limiting rods (3) to pass through; a limiting ring (53) is provided on the inner wall of the limiting groove (52), and the limiting ring (53) extends circumferentially along the crossbeam (5); a slot (31) is provided on the side wall of the limiting rod (3), and the slot (31) allows the limiting ring (53) to pass through. The drive disk (4) is provided with a limiting mechanism (10) for fixing the rotation position of the drive disk (4) on its side wall; the inner wall of the limiting groove (52) is provided with a guide surface (54) at an inclination, the guide surface (54) is provided for the end of the limiting rod (3) away from the protrusion (2) to abut, and the guide surface (54) is used to guide the crossbeam (5) to approach the protrusion (2) when multiple limiting rods (3) are spread in the limiting groove (52);A locking ring (8) is coaxially disposed on the surface of the drive disc (4) away from the protruding post (2). The locking ring (8) has an inner ring for the crossbeam (5) to insert into. A protruding ring (9) is disposed on the inner side wall of the inner ring. The protruding ring (9) is coaxially disposed with the locking ring (8). A notch (91) is provided through the side wall of the protruding ring (9). A mating block (51) is provided on the outer side wall of the crossbeam (5). The notch (91) allows the mating block (51) to pass through. A movable cavity (92) is provided inside the protruding ring (9). The movable cavity (92) extends circumferentially along the locking ring (8) and penetrates the side wall of the notch (91). The locking ring (8) is provided with a sliding connection to the movable cavity (92). The movable block (81) is used to close the notch (91). The outer wall of the locking ring (8) is provided with a movable opening (83). The movable opening (83) extends circumferentially along the locking ring (8) and communicates with the movable cavity (92). The side wall of the movable block (81) is provided with an operating rod (82), which extends out of the movable opening (83). The side wall of the structural column (1) is provided with a sliding groove (11). The sliding groove (11) is used for the sliding connection of the protruding column (2) and extends axially along the structural column (1). The inner side walls of the sliding groove (11) are provided with displacement grooves (12). The bottom of the displacement groove (12) is provided with a rack (13). The displacement groove (12) and the rack (13) both extend axially along the structural column (1). The end of the protruding column (2) away from the drive disk (4) is provided with a rotating shaft (21). Two intersecting displacement rods (6) are rotatably connected to the circumference of the rotating shaft (21). The ends of the displacement rods (6) are abutted by the groove walls of the rack (13). A fixing rod (7) is provided between the two displacement rods (6). The two ends of the fixing rod (7) are threaded to the side walls of the two displacement rods (6). The limiting mechanism (10) includes a base rod (101), a connecting rod (102), and a plug-in rod (103). The base rod (101) is fixed to the drive disk (4). The side wall of the connecting rod (102) is hinged to the end of the base rod (101) away from the drive disc (4) and the end of the plug rod (103), respectively; the side wall of the protruding post (2) is provided with a plug hole (23), which is for the end of the plug rod (103) away from the connecting rod (102) to be inserted; when the end of the plug rod (103) away from the connecting rod (102) is inserted into the plug hole (23), the limiting ring (53) is engaged in the slot (31); the side wall of the operating rod (82) is provided with a limiting member (821), which is used to fix the sliding position of the operating rod (82) relative to the locking ring (8).

2. The spliced ​​prefabricated beam-column structure according to claim 1, characterized in that: The limiting member (821) is an external thread provided on the outer side wall of the operating rod (82); the side wall of the movable block (81) is provided with a first threaded hole (811), and the inner wall of the movable cavity (92) is provided with a second threaded hole (93). Both the first threaded hole (811) and the second threaded hole (93) are for the external thread to be threadedly connected; when the external thread is threadedly connected to the second threaded hole (93), the movable block (81) closes the notch (91).

3. The spliced ​​prefabricated beam-column structure according to claim 2, characterized in that: The second threaded hole (93) penetrates the inner wall of the movable cavity (92).

4. A construction method for a prefabricated beam-column structure, applied to a prefabricated beam-column structure as described in any one of claims 1-3, characterized in that: Includes the following steps: S1: Install the protruding post (2) at the designated position on the side wall of the structural column (1), and rotate the drive disk (4) to bring together the multiple limiting rods (3); S2: Move the crossbeam (5) to allow the multiple limiting rods (3) to extend into the limiting groove (52); S3: Rotate the drive disk (4) to allow the multiple limiting rods (3) to spread out in the limiting groove (52), so that the limiting ring (53) is engaged in the slot (31); S4: Move the limiting mechanism (10) to fix the rotation position of the drive disk (4).

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