Assembly type inner clamping fixing piece column connecting joint and assembly method

Abstract

The invention relates to the technical field of building connecting joints, in particular to an assembly type inner clamping fixing piece column connecting joint and an assembly method, and the assembly type inner clamping fixing piece column connecting joint comprises a first connecting piece, a second connecting piece and a middle connecting piece; the middle connecting piece is arranged between the first connecting piece and the second connecting piece; the middle connecting piece is columnar, the first connecting piece and the second connecting piece are cylindrical or tubular, and the inner diameter of the first connecting piece and the inner diameter of the second connecting piece are larger than the outer diameter of the middle connecting piece; the upper end of the middle connecting piece is sleeved in the first connecting piece and is directly or indirectly connected with the inner wall of the first connecting piece; the lower end of the middle connecting piece is arranged in the second connecting piece in a sleeved mode and is directly or indirectly connected with the second connecting piece in a welding mode. The connecting joint is easy and convenient to install, the joint rigidity and bearing capacity are improved, energy is saved and carbon is low in the installation and implementation process, and engineering application is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of building connection nodes, and particularly to a prefabricated internal fastener column connection node and an assembly method thereof. Background Art

[0002] Modern green buildings require low-carbon environmental protection during the construction process. The fully bolted prefabricated column joints use snap connections and bolt connections during the construction process, with a simple construction process and no pollution. Conventional bolt-connected column joints have insufficient seismic performance, thus restricting their development in high-rise buildings. By adding structures inside the column joints, the joint stiffness and bearing capacity can be increased, and the safety and durability of the structure can be ensured.

[0003] However, the connection nodes of the prior art have problems such as complex installation methods, a large amount of bolts used, and limited joint stiffness and bearing capacity. Summary of the Invention

[0004] The purpose of the present invention is to provide a prefabricated internal fastener column connection node and an assembly method thereof to solve at least one of the technical problems existing in the prior art.

[0005] To solve the above technical problems, a prefabricated internal fastener column connection node provided by the present invention includes a first connecting member, a second connecting member, and an intermediate connecting member; The intermediate connecting member is arranged between the first connecting member and the second connecting member; The intermediate connecting member is columnar, the first connecting member and the second connecting member are cylindrical or tubular, and the inner diameters of the first connecting member and the second connecting member are larger than the outer diameter of the intermediate connecting member; The upper end of the intermediate connecting member is sleeved inside the first connecting member and is directly or indirectly connected to the inner wall of the first connecting member; The lower end of the intermediate connecting member is sleeved inside the second connecting member and is directly or indirectly connected to the second connecting member by welding.

[0006] Further, first flanges and second flanges are respectively arranged on the opposite end faces of the first connecting member and the second connecting member; The first flange and the second flange are connected by fasteners.

[0007] Further, a connecting plate is further included; The connecting plate is welded on the second connecting member, and the intermediate connecting member is welded on the connecting plate.

[0008] Further, the connecting plate includes a sleeved connecting plate; The outer edge portion of the sleeved connecting plate is welded to the second connecting member; A through hole that matches the shape and size of the intermediate connector is provided on the sleeved connecting plate; The intermediate connector passes through the through hole and is welded at the contact.

[0009] Furthermore, the connecting plate includes an end connecting plate; The outer edge portion of the end connecting plate is welded to the inner wall of the second connector; The end of the intermediate connector abuts against and is welded to the outer end face of the end connecting plate.

[0010] Furthermore, an outwardly convex structure is provided on the side wall of the intermediate connector; The intermediate connector is directly or indirectly connected to the first connector through the outwardly convex structure.

[0011] Furthermore, a retaining bracket is further included; The retaining bracket is fixedly provided on the inner wall of the first connector; The lower end face of the outwardly convex structure abuts against the upper end face of the retaining bracket. When an axially opposite stress is generated between the first connector and the intermediate connector, a resistance force is generated through the abutment between the outwardly convex structure and the retaining bracket, restricting the relative movement between the first connector and the intermediate connector.

[0012] Furthermore, the retaining bracket includes a groove portion and a clamping portion; The groove portion and the clamping portion are arranged staggeredly in the circumferential direction; The groove portion is used to enable the outwardly convex structure to pass from one side of the retaining bracket to the other side when the intermediate connector enters the first connector; After the outwardly convex structure passes through the retaining bracket through the groove portion, the first connector is rotated to make the outwardly convex structure and the clamping portion arranged oppositely and abut against each other.

[0013] Furthermore, a stiffening rib is further included; The stiffening rib is welded to the retaining bracket and the inner wall of the first connector, and is used to improve the structural stability of the retaining bracket and increase the upper limit of the resistance force generated through the abutment between the outwardly convex structure and the retaining bracket.

[0014] On the other hand, the present application also discloses an assembly method for an assembled internal fastener column connection node, including the steps: S1: Fix the second connector and the intermediate connector through the connecting plate; S2: Lift the first connector above the second connector and place it on the same vertical axis; S3: Rotate the first connector axially to make the outwardly convex structure opposite to the groove portion; S4: Control the first connecting member to approach the second connecting member, so that the convex structure passes through the groove portion to the other side of the card holder; S5: Rotate the first connecting member so that the convex structure is disposed opposite to and abuts against the engaging portion; S6: Connect the first flange and the second flange through a fastener.

[0015] Adopting the above technical solution, the present invention has the following beneficial effects: (1) Through the socket design of the intermediate connecting member with the first and second connecting members, and the connection of the flange and the fastener, the overall stability and bearing capacity of the joint are enhanced, making the connection more firm and reliable.

[0016] (2) Adopting the prefabricated design enables each component to be prefabricated and quickly assembled on site. The installation is simple and convenient, greatly shortening the construction period and improving the work efficiency.

[0017] (3) The design of the connecting plate provides various connection methods (such as sleeved connecting plates and end connecting plates), and the appropriate connection method can be selected according to the specific application scenario, increasing the flexibility of the solution.

[0018] (4) The combined use of the convex structure and the card holder not only realizes the precise positioning of the joint, but also can generate a resistance force through abutment under the action of stress, effectively restricting the relative movement between components and improving the structural strength and durability of the joint.

[0019] (5) The addition of the stiffening rib further enhances the structural stability of the card holder, improves the bearing capacity of the joint under extreme conditions, and ensures the safety of the structure.

[0020] (6) The compact design makes the joint occupy a small space, is suitable for various compact or restricted installation environments, and improves the space utilization rate.

[0021] (7) The socket design of the intermediate connecting member with the first and second connecting members replaces the traditional bolt connection to a certain extent, reduces the use of a large number of bolts, effectively improves the installation efficiency, reduces the cost, increases the joint stiffness and bearing capacity, and can be used in higher-level structures. In addition, the installation implementation process is energy-saving and low-carbon, which is beneficial to engineering applications. Description of the Drawings

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 Schematic three-dimensional exploded view of the column connection node of the prefabricated internal fastener disclosed in this application; Figure 2 Schematic three-dimensional structure view when the second connecting piece is connected to the intermediate connecting piece; Figure 3 Schematic three-dimensional structure view during the installation of the column connection node of the prefabricated internal fastener; Figure 4 Schematic three-dimensional structure view of the retaining bracket; Figure 5 Schematic three-dimensional structure view of the column connection node of the prefabricated internal fastener after the connection is completed; Figure 6 Schematic three-dimensional structure view when the convex structure and the notch are opposite and ready for installation; Figure 7 Schematic three-dimensional structure view when the convex structure and the notch are opposite and the first connecting piece and the intermediate connecting piece are installed; Figure 8 Schematic three-dimensional structure view of the first connecting piece with a positioning groove plate; Figure 9 Bottom view of the first connecting piece with a positioning groove plate (ignoring the retaining bracket); Figure 10 Cross-sectional view of the position where the elastic guiding pair is arranged; Figure 11 Schematic view when the arc-shaped sliding structure and the guiding part are in contact; Figure 12 Schematic view of the compression of the elastic part when the arc-shaped sliding structure and the guiding part are in contact.

[0024] Reference numerals: 1 - First connecting piece; 2 - Second connecting piece; 3 - Intermediate connecting piece; 4 - First flange; 5 - Second flange; 6 - Fastener; 7 - Sleeve connecting plate; 8 - End connecting plate; 9 - Convex structure; 10 - Retaining bracket; 11 - Groove part; 12 - Clamping part; 13 - Stiffening rib; 14 - Positioning groove plate; 15 - Notch; 16 - Arc-shaped sliding structure; 17 - Elastic part; 18 - Guiding part. Detailed implementation manners

[0025] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] It should also be noted that the following specific embodiments or specific implementation manners are a series of optimized setting manners listed by the present invention to further explain the specific invention content, and these setting manners can be combined with each other or used in association with each other.

[0029] The present invention will be further explained and described below in conjunction with specific implementation manners.

[0030] Embodiment 1 As Figures 1-3 shown, an assembled internal fastener column connection node provided in this embodiment includes a first connector 1, a second connector 2, and an intermediate connector 3; The intermediate connector 3 is arranged between the first connector 1 and the second connector 2; The intermediate connector 3 is cylindrical, the first connector 1 and the second connector 2 are tubular or cylindrical, and the inner diameters of the first connector 1 and the second connector 2 are greater than the outer diameter of the intermediate connector 3; The upper end of the intermediate connector 3 is sleeved inside the first connector 1 and is directly or indirectly connected to the inner wall of the first connector 1; The lower end of the intermediate connector 3 is sleeved inside the second connector 2 and is directly or indirectly connected to the second connector 2 by welding.

[0031] As Figures 1-3As shown, in this embodiment, the intermediate connector 3 is a cylindrical tube body, and the first connector 1 and the second connector 2 are square tube bodies, and the side length of the square tube body is greater than the diameter of the cylindrical tube body.

[0032] As a further implementation manner of this embodiment, first flanges 4 and second flanges 5 are respectively arranged on the opposite end faces of the first connector 1 and the second connector 2; The first flange 4 and the second flange 5 are connected by fasteners 6.

[0033] As a further implementation manner of this embodiment, it further includes a connecting plate; The connecting plate is welded on the second connector 2, and the intermediate connector 3 is welded on the connecting plate.

[0034] As a further implementation manner of this embodiment, the connecting plate includes a sleeved connecting plate 7; The outer edge portion of the sleeved connecting plate 7 is welded to the second connector 2; The sleeved connecting plate 7 is provided with a through hole that matches the shape and size of the intermediate connector 3; The intermediate connector 3 passes through the through hole and is welded at the contact position.

[0035] As a further implementation manner of this embodiment, the connecting plate includes an end connecting plate 8; The outer edge portion of the end connecting plate 8 is welded to the inner wall of the second connector 2; The end of the intermediate connector 3 abuts against and is welded to the outer end face of the end connecting plate 8.

[0036] As Figure 2 shown, the connecting plate includes a sleeved connecting plate 7 and an end connecting plate 8. The sleeved connecting plate 7 shown in the figure is arranged at the end of the second connector 2. In addition, the sleeved connecting plate 7 can also be arranged on the inner wall of the second connector 2. In order to enhance the connection strength between the intermediate connector 3 and the second connector 2, multiple sleeved connecting plates 7 can also be arranged along the axial direction of the second connector 2. The sleeved connecting plate 7 and the end connecting plate 8 can be used in cooperation as in this embodiment, or can be used alone.

[0037] As a further implementation manner of this embodiment, an outward convex structure 9 is arranged on the side wall of the intermediate connector 3; The intermediate connector 3 is directly or indirectly connected to the first connector 1 through the outward convex structure 9.

[0038] As a further implementation manner of this embodiment, it further includes a retaining bracket 10; The card slot 10 is fixedly arranged on the inner wall of the first connecting piece 1; The lower end surface of the convex structure 9 abuts against the upper end surface of the card slot 10. When axial tensile stress is generated between the first connecting piece 1 and the intermediate connecting piece 3, a resisting force is generated between the convex structure 9 and the card slot 10 through abutment, restricting the relative movement between the first connecting piece 1 and the intermediate connecting piece 3.

[0039] As Figure 4 shown, as a further implementation manner of this embodiment, the card slot 10 includes a groove portion 11 and a clamping portion 12; The groove portion 11 and the clamping portion 12 are arranged staggeredly in the circumferential direction; The groove portion 11 is used for allowing the convex structure 9 to pass through from one side of the card slot 10 to the other side when the intermediate connecting piece 3 enters the first connecting piece 1; After the convex structure 9 passes through the card slot 10 through the groove portion 11, the first connecting piece 1 is rotated so that the convex structure 9 is arranged opposite to and abuts against the clamping portion 12.

[0040] As Figure 3 shown, four convex structures 9 are provided, corresponding to the four wall directions of the second connecting piece 2 respectively. The groove portion 11 of the card slot 10 is arranged at the four corners of the corresponding first connecting piece 1, and the clamping portion 12 of the card slot 10 is arranged at the four walls of the corresponding first connecting piece 1. When the first connecting piece 1 is connected to the second connecting piece 2, first, the first connecting piece 1 and the second connecting piece 2 are staggered by 45 degrees. At this time, the convex structure 9 and the groove portion 11 are opposite to each other. Then, the first connecting piece 1 and the second connecting piece 2 are moved closer to each other. After the convex structure 9 passes through the groove portion 11, Figure 3 the first connecting piece 1 is rotated in the direction of the arrow in the figure, aligning the side walls of the first connecting piece 1 and the second connecting piece 2. At this time, the lower end surface of the convex structure 9 abuts against the clamping portion 12, preventing relative movement in the axial direction.

[0041] As a preferred implementation manner of this embodiment, multiple groups of the card slot 10 and the convex structure 9 are arranged in the axial direction.

[0042] As a further implementation manner of this embodiment, a stiffening rib 13 is further included; The stiffening rib 13 is welded to the inner wall of the card slot 10 and the first connecting piece 1, used to improve the structural stability of the card slot 10 and increase the upper limit of the resisting force generated by the abutment between the convex structure 9 and the card slot 10.

[0043] As a preferred embodiment of this embodiment, the stiffening rib 13 is a right-angled triangular plate, and the two right-angled sides are respectively fixedly connected to the inner wall of the first connector 1 and the capping 10, and are used for reinforcement; The stiffening ribs 13 are arranged in at least two rows.

[0044] When the prefabricated internal fastener column connection node disclosed in this embodiment is actually used, the capping 10 is a steel plate with a hole in the middle. In order to make the installation of the connection node smoother, the size of the hole in the middle of the capping 10 is larger than the outer diameter of the intermediate connector 3, preferably 2 mm larger. The shape and size of the groove portion 11 can be determined according to the shape and size of the convex structure 9. Preferably, the contour of the groove portion 11 is 2 mm larger than the contour of the convex structure 9, so as to ensure that the intermediate connector 3 can pass through the capping 10 smoothly.

[0045] As Figures 6-9 shown, as a further embodiment of this embodiment, a positioning groove plate 14 is further provided at the bottom end of the first connector 1; The positioning groove plate 14 is provided with a notch 15 having the same shape and size as the convex structure 9; The notch 15 is provided directly below the groove portion 11; When the intermediate connector 3 enters the first connector 1, the convex structure 9 needs to be aligned with the notch 15 so that the convex structure 9 can pass through the positioning groove plate 14.

[0046] During actual construction, if the positioning groove plate 14 is not installed, when hoisting, if the position of the convex structure 9 is not accurately positioned when passing through the capping 10, it is necessary to observe and adjust the relative angle between the first connector 1 and the intermediate connector 3 from above or below. After the positioning groove plate 14 is installed, only by aligning the convex structure 9 with the notch 15 and hoisting vertically downward can the first connector 1 and the intermediate connector 3 be successfully sleeved.

[0047] As Figures 10-12 shown, as a further embodiment of this embodiment, an elastic guiding pair is further included; The elastic guiding pair includes an elastic guiding structure provided at the bottom of the positioning groove plate 14 and a curved surface sliding structure 16 provided at the top of the convex structure 9; The elastic guiding structure is provided on both sides of the notch 15; The elastic guiding structure includes an elastic part 17 and a guiding part 18; Both ends of the elastic part 17 are respectively fixedly connected to the bottom of the positioning groove plate 14 and the top of the guiding part 18; The bottom of the guiding part 18 is arc-shaped; When there is an error between the convex structure 9 and the notch 15 due to precision reasons when hoisting the first connecting piece, the guiding part 18 abuts against the arc surface sliding structure 16. Due to the guiding effect between the arc surfaces (as Figure 12 shown), the first connecting piece is guided by the elastic guiding structure and slightly rotated when descending, so that the convex structure 9 is aligned with the notch 15 and passes through the notch 15.

[0048] As a further implementation manner of this embodiment, the position where the elastic part 17 is arranged deviates from the central position of the guiding part 18 and biases towards the side away from the notch. When the arc surface sliding structure 16 of the convex structure 9 abuts against the guiding part 18, the elastic part 17 will be compressed, thereby avoiding hard contact between the first connecting piece and the intermediate connecting piece. In addition, the biasing setting of the elastic part 17 enables the guiding part 18 to tilt towards one side of the notch 15 when being abutted (as Figure 12 shown), thereby enhancing the guiding ability of the elastic guiding structure.

[0049] Adopting the above technical solution, the present invention has the following beneficial effects: (1) Through the socket design of the intermediate connecting piece 3 with the first and second connecting pieces 2, and the cooperation of the convex structure 9 and the retainer 10, the overall stability of the connection node is significantly enhanced, the relative movement between components is effectively restricted, and the bearing capacity and safety of the connection node are improved.

[0050] (2) The prefabricated design enables each component to be prefabricated and quickly assembled on site, greatly shortening the construction period. At the same time, the staggered arrangement of the convex structure 9 and the retainer 10 and the rotation assembly method simplify the assembly process and improve work efficiency.

[0051] (3) The addition of various types of connecting plates, stiffeners 13 and other components further enhances the structural strength of the connection node, improves the mechanical properties such as tensile and bending resistance of the node, and extends the service life.

[0052] (4) The compact design makes the connection node occupy a small space, is suitable for various compact or restricted installation environments, and improves space utilization.

[0053] (5) The installation is simple and convenient, reduces the usage amount of bolts, is more economical, increases the node stiffness and bearing capacity, is energy-saving and low-carbon during the installation implementation process, and is beneficial to engineering applications.

[0054] Embodiment 2 An assembly method for an assembled internal fastener column connection node provided in this embodiment includes the steps: S1: Fix the second connecting piece and the middle connecting piece together by a connecting plate. S2: Lift the first connecting piece above the second connecting piece and align them on the same vertical axis. S3: Rotate the first connecting piece around the axis so that the convex structure faces the groove part. S4: Control the first connecting piece to approach the second connecting piece, so that the convex structure passes through the groove part to the other side of the catch. S5: Rotate the first connecting piece so that the convex structure is opposite to and abuts against the clamping part. S6: Connect the first flange and the second flange with fasteners.

[0055] Through the above steps, the assembly of the assembled internal fastener column connection node in Embodiment 1 can be quickly carried out.

[0056] As a preferred implementation mode of this embodiment, step S1 is prefabricated in the factory. The second connecting piece and the middle connecting piece are connected by a connecting plate. Only steps S2 - S6 need to be carried out at the construction site.

[0057] Adopting the above technical solution, the present invention has the following beneficial effects: (1) The assembly method has clear steps and is easy to operate, reducing the requirements for the technical level of construction workers. Through the standardized assembly process, the consistency and reliability of the connection nodes are ensured.

[0058] (2) By rotating the first connecting piece to match the convex structure with the groove part and the clamping part of the catch, precise positioning and stable connection of the connection node on the vertical axis are achieved. This design increases the flexibility of assembly and adapts to different construction environments and conditions.

[0059] (3) After the convex structure abuts against the clamping part of the catch, the first flange and the second flange are further fixed with fasteners, ensuring the stability and safety of the connection node when bearing loads.

[0060] (4) By prefabricating step S1 in the factory to complete the connection between the second connecting piece and the middle connecting piece, the assembly time at the construction site is greatly shortened. Only subsequent steps such as hoisting, rotating and fastening need to be carried out at the construction site, significantly accelerating the project progress. The combination of factory prefabrication and on-site assembly optimizes the allocation of manpower, material resources and time, improves the construction efficiency and quality. At the same time, it reduces material waste and environmental pollution at the construction site.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An assembled internal clamping column connection node, characterized in that: It includes a first connecting member, a second connecting member and an intermediate connecting member; The intermediate connecting member is arranged between the first connecting member and the second connecting member; The intermediate connecting piece is columnar, the first connecting piece and the second connecting piece are cylindrical or tubular, and the inner diameters of the first connecting piece and the second connecting piece are larger than the outer diameter of the intermediate connecting piece; The upper end of the intermediate connecting member is sleeved in the first connecting member and is directly or indirectly connected to the inner wall of the first connecting member; The lower end of the intermediate connecting member is sleeved in the second connecting member and is directly or indirectly connected to the second connecting member by welding.

2. The assembled internal clamping column connection node according to claim 1, characterized in that: The first connecting member and the second connecting member are respectively provided with a first flange and a second flange on the opposite end surfaces thereof; The first flange and the second flange are connected via fasteners.

3. The assembled internal clamping member column connection node according to claim 1, characterized in that: Also included is a connection plate; The connecting plate is welded on the second connecting piece, and the intermediate connecting piece is welded on the connecting plate.

4. The assembled internal clamping member column connection node according to claim 3, characterized in that: The connecting plate comprises a sleeve connecting plate; The outer edge of the sleeve connecting plate is welded to the second connecting piece; The sleeve connecting plate is provided with a through hole that matches the shape and size of the intermediate connecting piece; The intermediate connecting piece passes through the through hole and is welded at the contact point.

5. The assembled internal clamping member column connection node according to claim 3, characterized in that: The connecting plate includes an end connecting plate; The outer edge of the end connecting plate is welded to the inner wall of the second connecting member; The end of the intermediate connecting member is abutted against and welded to the outer end surface of the end connecting plate.

6. The assembled internal clamping member column connection node according to claim 1, characterized in that: The side wall of the intermediate connecting member is provided with an outward convex structure; The intermediate connecting member is directly or indirectly connected to the first connecting member through the outer protruding structure.

7. The assembled internal clamping member column connection node according to claim 6, characterized in that: Also included is Cato; The card holder is fixedly arranged on the inner wall of the first connecting member; The lower end surface of the convex structure abuts against the upper end surface of the tray. When axial stresses in opposite directions are generated between the first connecting member and the intermediate connecting member, resistance force is generated between the convex structure and the tray through abutment, thereby limiting the relative movement between the first connecting member and the intermediate connecting member.

8. The assembled internal clamping member column connection node according to claim 7, characterized in that: The card holder comprises a groove portion and a clamping portion; The groove portions and the clamping portions are arranged alternately in the circumferential direction; The groove portion is used to allow the convex structure to pass from one side of the card holder to the other side when the intermediate connecting member enters the first connecting member; After the outer convex structure passes through the card holder through the groove portion, the first connecting member is rotated so that the outer convex structure and the clamping portion are arranged opposite to and abut against each other.

9. The assembled internal clamping member column connection node according to claim 7, characterized in that: It also includes stiffening ribs; The reinforcing rib is welded to the inner wall of the bracket and the first connecting member, so as to improve the structural stability of the bracket and increase the upper limit of the resistance generated by the abutment between the outer convex structure and the bracket.

10. An assembly method for an assembled internal clamping member column connection node, characterized in that: Includes steps: S1: The second connecting member and the middle connecting member are fixedly connected via a connecting plate; S2: hoist the first connecting member above the second connecting member and place them on the same vertical axis; S3: rotating the first connecting member around the axial direction so that the convex structure is opposite to the concave groove; S4: controlling the first connecting member to approach the second connecting member so that the convex structure passes through the groove portion to the other side of the card holder; S5: rotating the first connecting member so that the outer convex structure and the clamping portion are arranged opposite to and abut against each other; S6: Connect the first flange and the second flange by fasteners.

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