Fabricated steel structure joint intelligent connecting device and application method

Abstract

This invention discloses an intelligent connection device and application method for prefabricated steel structure nodes, belonging to the field of steel structure technology. It includes a main column, a crossbeam, an inner hook mechanism, an installation mechanism, and a limiting mechanism. The crossbeam is installed on one side of the outer surface of the main column; the inner hook mechanism is located on the crossbeam and connected to the main column. Through the use of the inner hook mechanism, the hook plate is horizontally inserted into the insertion hole and rotates into a "+" shape, forming a mechanical anti-dislodgement mechanism to ensure that the crossbeam will not accidentally slip off before being locked. Simultaneously, the inner spacer wraps around the end of the hook plate to prevent it from warping or twisting under stress, while distributing concentrated pressure to the column wall panel to avoid local buckling. Through the use of the limiting mechanism, the limiting support block supports the installation plate, actively controlling lateral slippage and effectively limiting the lateral slippage of the installation plate under horizontal load, maintaining the stability of the node's geometric position.

Description

Technical Field

[0001] This invention belongs to the field of steel structure technology, specifically to an intelligent connection device and application method for prefabricated steel structure nodes. Background Technology

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure mainly consists of steel beams, steel columns, steel trusses, and other components made of steel profiles and plates. Rust removal and prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are used. The components are usually connected by welds, bolts, or rivets. Due to their light weight and simple construction, they are widely used in large factories, stadiums, high-rise buildings, bridges, and other fields. Steel structures are prone to corrosion, and generally require rust removal, galvanizing, or painting, as well as regular maintenance. During use, the steel must possess good mechanical and processing properties. Materials such as Q235 carbon steel and 16Mn low-alloy steel meet the requirements. The durability of steel is affected by factors such as corrosion and high temperatures; protective measures include galvanizing and anodizing.

[0003] Steel structure nodes are key components in steel structures that reliably connect beams, columns, supports, and other members, ensuring that the entire structure can stably withstand various loads.

[0004] Currently, prefabricated steel structure joint connections mainly employ methods such as on-site welding, through-bolt connections with high-strength bolts, or bolted end-plate connections. However, existing connection technologies still have significant shortcomings in terms of construction efficiency, load-bearing reliability, and safety redundancy. 1. The quality of on-site welded joints is greatly affected by welding conditions and personnel skills. Weld inspection takes a long time, and the high-altitude environment makes the operation difficult and poses a great fire hazard. At the same time, the heat-affected zone of the weld can easily lead to embrittlement of the base material, reducing the fatigue life of the joint.

[0005] 2. Existing hook-and-loop or plug-in type joints typically only provide temporary fixation in one direction. The crossbeam may still detach before it is fully locked, posing a safety hazard. Moreover, their anti-warping ability is weak, and the joint is prone to local deformation or stress concentration after being subjected to force, resulting in an unstable force transmission path. 3. Many nodes lack adjustable anti-lateral displacement devices. When subjected to horizontal loads, the mounting plates or end plates are prone to lateral slippage, causing changes in geometric configuration and affecting the overall stability of the structure.

[0006] Therefore, there is an urgent need for an intelligent connection device for prefabricated steel structure nodes that can achieve fast, safe, and weld-free assembly, and has multiple functions such as anti-detachment, anti-slip, adjustability, and replaceability. Summary of the Invention

[0007] The purpose of this invention is as follows: Through the use of an inner hook mechanism, the hook plate, after being horizontally inserted into the insertion hole, rotates to a "+" shape, forming a mechanical anti-dislodgement mechanism to ensure that the crossbeam will not accidentally slip off before being locked. Simultaneously, the inner spacer wraps around the end of the hook plate to prevent it from warping or twisting under stress, while also distributing concentrated pressure to the column wall panel to avoid localized buckling. Through the use of a limiting mechanism, the limiting support block abuts and supports the mounting plate, actively controlling lateral slippage and effectively limiting the lateral slippage of the mounting plate under horizontal loads, maintaining the stability of the node's geometric position. By using the traction mechanism, the L-shaped traction plate cooperates with the traction hole. When the crossbeam is under tension or bending and tends to pull out, the L-shaped traction plate and the traction hole form a mechanical block to prevent the crossbeam from coming out of the mounting sleeve. In addition, the size of the traction hole is slightly larger than the traction plate, allowing the crossbeam to have a very small degree of vertical rotation freedom, avoiding additional stress concentration caused by rigid jamming. All components are independently detachable and can be prefabricated according to standard drawings. On-site, only tools are needed to tighten the bolts. Later maintenance or replacement of the crossbeam does not require damage to the original structure, which greatly reduces the difficulty and time of high-altitude operations.

[0008] This invention provides an intelligent connection device for prefabricated steel structure nodes and its application method.

[0009] In a first aspect, the present invention provides a technical solution: an intelligent connection device for prefabricated steel structure nodes, comprising a main column, a crossbeam, an inner hook mechanism, an installation mechanism, and a limiting mechanism. The crossbeam is installed on one side of the outer surface of the main column; The inner hook mechanism is located on the crossbeam and is connected to the main column. The inner hook mechanism includes a partition component, a hook hole component, and a hook plate. The partition component is located on the main column, the hook hole component is located on the main column, and the hook plate is fixedly connected to one end of the crossbeam and is connected to the hook hole component. The installation mechanism is provided in two sets, both sets of which are mounted on the main column and both sets of installation mechanisms are connected to the crossbeam. The limiting mechanism is provided in multiple sets, and all sets of the limiting mechanism are provided on the main column. Each pair of limiting mechanisms is connected to each set of installation mechanism. Each set of limiting mechanisms includes a limiting support block and a positioning component. The positioning component is provided on the main column, and the limiting support block is installed on the positioning component.

[0010] The hook hole component is an insertion hole, which is opened on one side of the outer surface of the main column, and the hook plate is installed in the insertion hole.

[0011] The separating component is an inner sleeve, which is fixedly connected to the main column, and the inner wall of the inner sleeve is wrapped around the outer surface of the hook plate.

[0012] Each set of the installation mechanism includes a fixing component, a base component, and an installation sleeve. The base component is located on the main column. There are two sets of fixing components, both of which are located on the main column and connected to the base component. The installation sleeve is installed on the base component.

[0013] Each of the fixed components includes a mounting bolt and a mounting threaded hole. The mounting threaded hole is opened on one side of the outer surface of the main column, and the mounting bolt is installed on the base component and threaded into the mounting threaded hole.

[0014] The base component includes a triangular support plate and a mounting plate. The mounting plate is fixedly connected to one end of the mounting sleeve and is threadedly connected to the mounting bolt. One end of the triangular support plate is fixedly connected to the mounting plate, and the other end of the triangular support plate is fixedly connected to the mounting sleeve.

[0015] The positioning component includes a limiting bolt and a limiting post. The limiting post is fixedly connected to the main column, the limiting support block is movably inserted into the limiting post, and the limiting bolt is threadedly connected to one end of the limiting post.

[0016] It also includes a traction mechanism, which is provided in two sets. Each set of the traction mechanism is provided on each mounting sleeve, and both sets of traction mechanisms are connected to the crossbeam. Each set of the traction mechanism includes an L-shaped traction plate and a docking component. The docking component is provided on the crossbeam, and the L-shaped traction plate is fixedly connected to the mounting sleeve and connected to the docking component.

[0017] The docking component is a traction hole, which is opened at one end of the crossbeam, and the L-shaped traction plate is installed in the traction hole.

[0018] Secondly, according to the first aspect above, the present invention also provides a technical solution: an application method of an intelligent connection device for prefabricated steel structure nodes, comprising the following steps: Step 1: Connecting the crossbeam to the main column: Lift the crossbeam and align the hook plate at its end with the insertion hole on the main column. Push the crossbeam horizontally so that the hook plate passes completely through the insertion hole and enters the main column, where it is wrapped by the inner spacer. Rotate the crossbeam 90° around its axis so that the hook plate and the insertion hole are in a cross shape.

[0019] Step 2: Assembly of the installation mechanism: Take two sets of installation sleeves and install them from the top and bottom sides of the crossbeam. Align the L-shaped pull plate inside the installation sleeve with the pull hole on the crossbeam, press and slide to align the L-shaped pull plate with the pull hole, forming a mechanical hook. At this time, the installation plate is attached to the surface of the main column. Pass the installation bolt through the through hole on the installation plate and screw it into the pre-made installation thread hole on the main column, so that the installation sleeve wraps and positions the top and bottom sides of one end of the crossbeam.

[0020] Step 3: Assembly of the limiting mechanism: Place the limiting support block on the limiting post on the surface of the main column, slide the limiting support block to wrap around the corner of the mounting plate, screw the limiting bolt into the end of the limiting post and tighten it gradually so that the limiting support block presses against the corner of the mounting plate and restricts its slippage under shear force.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) In this invention, by using the inner hook mechanism, the hook plate is horizontally inserted into the insertion hole and rotated into a "+" shape to form a mechanical anti-dislodgement, ensuring that the crossbeam will not slip off accidentally before it is locked. At the same time, the inner spacer wraps around the end of the hook plate to prevent it from warping or twisting under force, and disperses the concentrated pressure to the column wall panel to avoid local buckling.

[0022] (2) In this invention, by using the limiting mechanism, the limiting support block supports the mounting plate, which can actively control the lateral sliding, effectively limit the lateral sliding of the mounting plate under horizontal load, and maintain the stability of the node geometric position.

[0023] (3) In this invention, by using the traction mechanism, the L-shaped traction plate and the traction hole cooperate. When the crossbeam is pulled or bent and tends to be pulled out, the L-shaped traction plate and the traction hole form a mechanical block to prevent the crossbeam from coming out of the mounting sleeve. In addition, the size of the traction hole is slightly larger than the traction plate, allowing the crossbeam to have a very small degree of rotation freedom in the vertical direction, avoiding additional stress concentration caused by rigid jamming.

[0024] (4) In this invention, all components are independently detachable and can be prefabricated according to standard drawings. Only tools are needed to tighten the bolts on site. When maintaining or replacing the crossbeam, there is no need to damage the original structure, which greatly reduces the difficulty and time of high-altitude operations. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present invention; Figure 2 This is an exploded view of the present invention; Figure 3 This is an exploded cross-sectional view of the present invention; Figure 4 This is a partial cross-sectional view of the present invention; Figure 5 This is an exploded cross-sectional view of the inner hook mechanism of the present invention; Figure 6 This is an exploded view of the limiting mechanism of the present invention; Figure 7 This is an exploded cross-sectional view of the mounting mechanism of the present invention; Figure 8 This is an exploded view of the mounting mechanism of the present invention.

[0026] The markings in the diagram are: 1. Main column; 2. Insertion hole; 3. Inner spacer; 4. Installation threaded hole; 5. Limiting column; 6. Limiting support block; 7. Mounting plate; 8. Limiting bolt; 9. Mounting bolt; 10. Triangular support plate; 11. Mounting sleeve; 12. Crossbeam; 13. Hook plate; 14. L-shaped traction plate; 15. Traction hole. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] Please see Figures 1-8 As shown, the present invention is an intelligent connection device for prefabricated steel structure nodes and its application method.

[0029] Firstly, please refer to Figure 1 and Figure 8 As shown, the present invention provides an embodiment of an intelligent connection device for prefabricated steel structure nodes, comprising a main column 1, a crossbeam 12, an inner hook mechanism, an installation mechanism, and a limiting mechanism: The crossbeam 12 is installed on one side of the outer surface of the main column 1; The inner hook mechanism is located on the crossbeam 12 and is connected to the main column 1. The inner hook mechanism includes a partition component, a hook hole component and a hook plate 13. The partition component is located on the main column 1, the hook hole component is located on the main column 1, and the hook plate 13 is fixedly connected to one end of the crossbeam 12 and is connected to the hook hole component. The installation mechanism is provided in two sets, both of which are located on the main column 1 and are connected to the crossbeam 12. The limiting mechanism is provided in multiple sets, all of which are located on the main column 1. Each pair of limiting mechanisms is connected to each set of installation mechanisms. Each set of limiting mechanisms includes a limiting support block 6 and a positioning component. The positioning component is located on the main column 1, and the limiting support block 6 is installed on the positioning component.

[0030] In this implementation plan: the main column 1 is the load-bearing body, and the crossbeam 12 is initially hooked and positioned by the hook plate 13 inserted into the hook hole component through the inner hook mechanism, which solves the problem of temporary docking during hoisting. Two sets of installation mechanisms apply clamping force to the crossbeam 12 from the top and bottom or left and right sides respectively to achieve the main force connection. Multiple sets of limiting mechanisms abut against the installation mechanism through the limiting support block 6 to limit its lateral slippage under load. The entire structure does not require on-site welding and can be installed by plugging and bolting.

[0031] Specifically: The hook hole component is an insertion hole 2, which is opened on one side of the outer surface of the main column 1, and the hook plate 13 is installed in the insertion hole 2.

[0032] In this embodiment: the shape of the insertion hole 2 is consistent with that of the hook plate 13, and its size is slightly larger than that of the cross section of the hook plate 13. During installation, the crossbeam 12 drives the hook plate 13 to enter the insertion hole 2 horizontally. After rotation, the hook plate 13 and the insertion hole 2 form a cross shape, forming the first line of tensile and shear resistance. This structure allows the hook plate 13 to have a certain fine adjustment gap in the insertion hole 2, which facilitates the subsequent alignment of the installation mechanism and prevents the crossbeam 12 from falling off before it is locked.

[0033] Specifically: the separating component is an inner partition sleeve 3, which is fixedly connected inside the main column 1, and the inner wall of the inner partition sleeve 3 is wrapped around the outer surface of the hook plate 13.

[0034] In this embodiment: the inner sleeve 3 is a square sleeve, integrally cast in the internal cavity of the main column 1. When the hook plate 13 passes through the insertion hole 2, its end extends into the inner sleeve 3 and is wrapped and constrained by its inner wall. When the crossbeam 12 is subjected to bending moment, the root of the hook plate 13 will generate a moment that causes it to warp. The inner wall of the inner sleeve 3 restricts the hook plate 13 from warping. At the same time, the inner sleeve 3 cooperates with the wall panel of the main column 1 to disperse the concentrated pressure transmitted by the hook plate 13 to a larger area of ​​the wall surface of the main column 1, avoiding stress concentration that causes local deformation of the main column 1.

[0035] Specifically: Each set of installation mechanisms includes a fixing component, a base component, and an installation sleeve 11. The base component is located on the main column 1. There are two sets of fixing components, both of which are located on the main column 1 and connected to the base component. The installation sleeve 11 is installed on the base component.

[0036] In this embodiment: the mounting sleeve 11 is a U-shaped shell with the opening facing the crossbeam 12. The two mounting sleeves 11 cooperate with each other and form a sleeve shape after closing, which completely wraps one end of the crossbeam 12 to form a "clamp" type constraint. The base component is connected to the main column 1 through the fixing component. The mounting sleeve 11 covers the upper and lower flanges of the crossbeam 12. After the crossbeam 12 is hoisted on site, only the two mounting sleeves 11 need to be fastened together, which improves the assembly efficiency.

[0037] Specifically: Each set of fixing components includes mounting bolts 9 and mounting threaded holes 4. The mounting threaded holes 4 are opened on one side of the outer surface of the main column 1. The mounting bolts 9 are installed on the base component and are threaded into the mounting threaded holes 4.

[0038] In this embodiment: the mounting threaded hole 4 is a prefabricated internal thread blind hole, distributed on the side of the main column 1. After the mounting bolt 9 passes through the base component, it is screwed into the mounting threaded hole 4 to provide a clamping force perpendicular to the axis of the crossbeam 12. This avoids the problem of traditional through bolts requiring entry into the main column 1 for operation, and achieves single-sided fastening on the entire outer side.

[0039] Specifically: The base component includes a triangular support plate 10 and a mounting plate 7. The mounting plate 7 is fixedly connected to one end of the mounting sleeve 11 and is threadedly connected to the mounting bolt 9. One end of the triangular support plate 10 is fixedly connected to the mounting plate 7, and the other end of the triangular support plate 10 is fixedly connected to the mounting sleeve 11.

[0040] In this embodiment: the mounting plate 7 is a rectangular steel plate, which is integrated with the mounting sleeve 11. The mounting bolt 9 passes through the through hole on the mounting plate 7 and is screwed into the mounting thread hole 4, thereby pressing the mounting plate 7 against the surface of the main column 1. The triangular support plate 10 forms a triangular stable structure between the mounting plate 7 and the mounting sleeve 11. When the mounting sleeve 11 is subjected to vertical shear force or bending moment from the crossbeam 12, the triangular support plate 10 distributes the force to the mounting plate 7 and the main column 1, effectively reducing the peak stress of the weld at the root of the mounting plate 7, increasing the fatigue life by more than two times, enhancing the bending stiffness between the mounting plate 7 and the mounting sleeve 11, and preventing cracking at the weld joint under the bending moment of the crossbeam 12.

[0041] Specifically: The positioning components include a limiting bolt 8 and a limiting post 5. The limiting post 5 is fixedly connected to the main column 1, the limiting support block 6 is movably inserted into the limiting post 5, and the limiting bolt 8 is threadedly connected to one end of the limiting post 5.

[0042] In this embodiment: the limiting post 5 is a short cylinder welded to the surface of the main column 1, the limiting support block 6 is a block with a central hole, which is fitted on the limiting post 5 and can slide axially, and the limiting bolt 8 is screwed into the limiting post 5 from the end. By adjusting the screwing depth of the limiting bolt 8, the limiting support block 6 can be made to fit the mounting plate 7, so that the mounting plate 7 is lifted and limited.

[0043] Specifically, it also includes a traction mechanism, which has two sets. Each traction mechanism is located on each mounting sleeve 11, and both sets of traction mechanisms are connected to the crossbeam 12. Each traction mechanism includes an L-shaped traction plate 14 and a docking component. The docking component is located on the crossbeam 12, and the L-shaped traction plate 14 is fixedly connected inside the mounting sleeve 11 and connected to the docking component.

[0044] In this embodiment: the L-shaped pull plate 14 is welded to the inner wall of the mounting sleeve 11. During installation, the L-shaped pull plate 14 enters the docking component. After moving, the L-shaped pull plate 14 is fastened to the docking component. When the crossbeam 12 is pulled or bent and tends to pull out, the L-shaped pull plate 14 forms a reverse hook with the docking component, preventing the crossbeam 12 from separating from the mounting sleeve 11, which is equivalent to a second safety lock.

[0045] Specifically: the docking component is a traction hole 15, which is opened at one end of the crossbeam 12, and the L-shaped traction plate 14 is installed in the traction hole 15.

[0046] In this embodiment: the traction hole 15 is a rectangular through hole, the size of which is slightly larger than the L-shaped traction plate 14, allowing the crossbeam 12 to rotate slightly in the vertical direction, avoiding rigid jamming that would cause stress concentration, and allowing the L-shaped traction plate 14 to enter the traction hole 15, with the L-shaped traction plate 14 and the traction hole 15 forming a mechanical interlock.

[0047] Secondly, according to the implementation scheme of the first aspect above, the present invention also provides an implementation scheme, a method for applying an intelligent connection device for prefabricated steel structure nodes, comprising the following steps: Step 1: Connect the crossbeam 12 to the main column 1: Lift the crossbeam 12 and align the hook plate 13 at its end with the insertion hole 2 on the main column 1. Push the crossbeam 12 horizontally so that the hook plate 13 passes completely through the insertion hole 2 and enters the main column 1, where it is wrapped by the inner spacer 3. Rotate the crossbeam 12 90° around its axis so that the hook plate 13 and the insertion hole 2 are in a cross shape.

[0048] Step 2: Assembly of the installation mechanism: Take two sets of installation sleeves 11 and install them from the upper and lower sides of the crossbeam 12. Align the L-shaped pull plate 14 inside the installation sleeve 11 with the pull hole 15 on the crossbeam 12, press and slide to make the L-shaped pull plate 14 and the pull hole 15 align to form a mechanical hook. At this time, the installation plate 7 is attached to the surface of the main column 1. Pass the installation bolt 9 through the through hole on the installation plate 7 and screw it into the pre-made installation thread hole 4 on the main column 1 so that the installation sleeve 11 wraps and positions the upper and lower sides of one end of the crossbeam 12.

[0049] Step 3: Assembly of the limiting mechanism: Place the limiting support block 6 on the limiting post 5 on the surface of the main column 1, slide the limiting support block 6 to wrap around the corner of the mounting plate 7, screw the limiting bolt 8 into the end of the limiting post 5 and tighten it gradually so that the limiting support block 6 presses against the corner of the mounting plate 7 and restricts its slippage under shear force.

[0050] The control method of this invention is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intelligent connection device for prefabricated steel structure nodes, comprising a main column (1), a crossbeam (12), an inner hook mechanism, an installation mechanism, and a limiting mechanism, characterized in that: The crossbeam (12) is installed on one side of the outer surface of the main column (1); The inner hook mechanism is located on the crossbeam (12) and is connected to the main column (1). The inner hook mechanism includes a partition component, a hook hole component and a hook plate (13). The partition component is located on the main column (1), the hook hole component is located on the main column (1), and the hook plate (13) is fixedly connected to one end of the crossbeam (12) and is connected to the hook hole component. The installation mechanism is provided in two sets, both sets of the installation mechanism are located on the main column (1), and both sets of the installation mechanism are connected to the crossbeam (12); The limiting mechanism is provided in multiple sets, and all sets of the limiting mechanism are provided on the main column (1). Each pair of limiting mechanisms is connected to each set of installation mechanism. Each set of limiting mechanisms includes a limiting support block (6) and a positioning component. The positioning component is provided on the main column (1), and the limiting support block (6) is installed on the positioning component.

2. The intelligent connecting device for fabricated steel structure joint according to claim 1, characterized in that: The hook hole component is an insertion hole (2), which is opened on one side of the outer surface of the main column (1), and the hook plate (13) is installed in the insertion hole (2); The separating component is an inner sleeve (3), which is fixedly connected to the main column (1), and the inner wall of the inner sleeve (3) is wrapped around the outer surface of the hook plate (13).

3. The intelligent connecting device for fabricated steel structure joint according to claim 1, characterized in that: Each set of the installation mechanism includes a fixing component, a base component and an installation sleeve (11). The base component is located on the main column (1). There are two sets of fixing components. Both sets of fixing components are located on the main column (1) and both sets of fixing components are connected to the base component. The installation sleeve (11) is installed on the base component. Each of the fixed components includes a mounting bolt (9) and a mounting threaded hole (4). The mounting threaded hole (4) is opened on one side of the outer surface of the main column (1). The mounting bolt (9) is installed on the base component and is threaded into the mounting threaded hole (4). The base component includes a triangular support plate (10) and a mounting plate (7). The mounting plate (7) is fixedly connected to one end of the mounting sleeve (11), and the mounting plate (7) is threadedly connected to the mounting bolt (9). One end of the triangular support plate (10) is fixedly connected to the mounting plate (7), and the other end of the triangular support plate (10) is fixedly connected to the mounting sleeve (11).

4. The intelligent connection device for prefabricated steel structure nodes as described in claim 1, characterized in that: The positioning component includes a limiting bolt (8) and a limiting post (5). The limiting post (5) is fixedly connected to the main column (1). The limiting support block (6) is movably inserted into the limiting post (5). The limiting bolt (8) is threadedly connected to one end of the limiting post (5).

5. The intelligent connection device for prefabricated steel structure nodes as described in claim 1, characterized in that: It also includes a traction mechanism, which is provided in two sets. Each set of the traction mechanism is provided on each mounting sleeve (11), and both sets of traction mechanisms are connected to the crossbeam (12). Each set of the traction mechanism includes an L-shaped traction plate (14) and a docking component. The docking component is provided on the crossbeam (12). The L-shaped traction plate (14) is fixedly connected to the mounting sleeve (11), and the L-shaped traction plate (14) is connected to the docking component.

6. The intelligent connection device for prefabricated steel structure nodes as described in claim 1, characterized in that: The docking component is a traction hole (15), which is opened at one end of the crossbeam (12), and the L-shaped traction plate (14) is installed in the traction hole (15).

7. The application method of the intelligent connection device for prefabricated steel structure nodes, characterized in that, The intelligent connection device for prefabricated steel structure nodes as described in any one of claims 1-6 includes the following steps: S1. Connect the crossbeam (12) to the main column (1): Lift the crossbeam (12) so that the hook plate (13) at its end is aligned with the insertion hole (2) on the main column (1). Push the crossbeam (12) horizontally so that the hook plate (13) passes completely through the insertion hole (2) and enters the interior of the main column (1). It is wrapped by the inner spacer (3). Rotate the crossbeam (12) 90° around its axis so that the hook plate (13) and the insertion hole (2) are in a cross shape. S2, Installation mechanism closing: Take two sets of installation sleeves (11) and install them from the upper and lower sides of the crossbeam (12). Align the L-shaped pull plate (14) inside the installation sleeve (11) with the pull hole (15) on the crossbeam (12), press and slide to make the L-shaped pull plate (14) and pull hole (15) dock together to form a mechanical hook. At this time, the installation plate (7) is attached to the surface of the main column (1). Pass the installation bolt (9) through the through hole on the installation plate (7) and screw it into the pre-made installation thread hole (4) on the main column (1) so that the installation sleeve (11) wraps and positions the upper and lower sides of one end of the crossbeam (12). S3. Assembly of the limiting mechanism: Place the limiting support block (6) on the limiting column (5) on the surface of the main column (1), slide the limiting support block (6) to wrap the corner of the mounting plate (7), screw the limiting bolt (8) into the end of the limiting column (5), and tighten it gradually so that the limiting support block (6) presses the corner of the mounting plate (7) to limit its slippage under shear force.

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