Fabricated steel structure connecting joint

Abstract

The invention relates to an assembly type steel structure connecting joint, and relates to the technical field of building steel structure construction, and the assembly type steel structure connecting joint comprises a main cross beam used for being connected between adjacent steel stand columns; the secondary cross beams are connected between the two main cross beams; the adjusting connecting mechanism is arranged between the main cross beam and the secondary cross beam and comprises a transverse adjusting supporting assembly, a vertical adjusting supporting assembly and a fixing assembly, and the transverse adjusting supporting assembly is used for adjusting the relative connecting position between the secondary cross beam and the main cross beam in the transverse direction; the vertical adjustment supporting assembly is used for adjusting the relative connection position between the secondary cross beam and the main cross beam in the vertical direction. The fixing assembly is used for adjusting and fixing the torsion angle of the secondary cross beam along the horizontal axis. The connecting structure has the effects that the mounting precision, the construction difficulty and the construction cost required by the connecting joint between the main cross beam and the secondary cross beam are reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of building steel structure construction, and in particular to an assembled steel structure connection node. Background Art

[0002] Prefabricated steel structures, with their modular design, rapid construction, and environmentally friendly and cost-effective advantages, have become a key development direction in modern construction. By utilizing prefabricated components and on-site assembly, they significantly improve construction efficiency, reduce environmental pollution, and achieve architectural flexibility while ensuring structural safety. This construction method not only meets modern society's demand for efficient construction but also aligns with the concept of sustainable development, providing new insights for the transformation and upgrading of the construction industry.

[0003] At present, prefabricated building steel structures mainly include steel columns for bearing weight, main beams connecting multiple steel columns, secondary beams connected between two main beams for supporting floor slabs or other loads, and connection nodes connecting the main beams and secondary beams. The connection nodes mainly include connecting ear plates, connecting bolts and other components. The connecting ear plates can be bolted or welded to the main beams, and then the secondary beams and the connecting ear plates are spliced with bolts. In addition, there are some connection nodes that use flanges, pins or other mechanical connectors to achieve the connection between the main and secondary beams. These methods can meet the basic connection requirements to a certain extent, but they mainly rely on strict dimensional control and precise installation operations. However, during the actual installation of prefabricated building steel structures, due to on-site installation dimensional deviations of various components or dimensional errors in component production and manufacturing, horizontal or vertical misalignment deviations may occur when the main beam and the secondary beam are spliced. Traditional connection methods are difficult to adapt to such deviations, resulting in the need for construction workers to re-cut or weld the connecting ear plates, or even re-drill holes to adjust the position. The installation accuracy requirements of the connection nodes are high, which makes on-site installation difficult. This not only increases the construction difficulty and cost, but also affects the overall construction efficiency. Summary of the Invention

[0004] In order to reduce the installation accuracy, construction difficulty and construction cost required for the connection node between the main beam and the secondary beam, and improve construction efficiency, the present application provides a prefabricated steel structure connection node.

[0005] This application provides an assembled steel structure connection node, which adopts the following technical solution: An assembled steel structure connection node, comprising: A main crossbeam, used for connecting adjacent steel columns; A secondary crossbeam connected between the two main crossbeams; The adjusting connection mechanism is arranged between the main beam and the secondary beam, and includes a horizontal adjustment support assembly, a vertical adjustment support assembly and a fixing assembly, wherein the horizontal adjustment support assembly is used to adjust the relative connection position between the secondary beam and the main beam along the horizontal direction; the vertical adjustment support assembly is used to adjust the relative connection position between the secondary beam and the main beam along the vertical direction; the fixing assembly is used to adjust and fix the torsion angle of the secondary beam along the horizontal axis.

[0006] By adopting the above technical solution, during the actual construction and assembly process, the main beam is first installed between adjacent steel columns, and then the secondary beam is placed between the two main beams. The secondary beam is then connected and fixed to the main beam through the vertical adjustment support assembly and the fixing assembly. During the assembly of the main and secondary beams, the horizontal adjustment support assembly in the connection mechanism can flexibly adjust the relative connection position between the two ends of the secondary beam in the length direction and the main beams on both sides in the horizontal direction; at the same time, the vertical adjustment support assembly can vertically adjust the relative height of the two ends of the secondary beam in the length direction to solve the vertical misalignment problem caused by installation size deviation or production error. Finally, the fixing assembly finely adjusts and fixes the torsion angle of the secondary beam along the horizontal axis to keep the top surface of the secondary beam along its length direction horizontal, thereby better contacting with the bottom of the assembled floor. The coordinated use of the horizontal adjustment support assembly, the vertical adjustment support assembly, and the fixing assembly can achieve precise adjustment and fixation between the main beam and the secondary beam in the horizontal, vertical, and torsional angle dimensions, effectively compensating for horizontal and vertical misalignments caused by installation size deviations or component production errors, greatly reducing installation difficulty and improving construction efficiency. The entire connection node does not require on-site welding or re-drilling, further reducing construction costs and time, meeting the requirements of modern buildings for efficiency and environmental protection, and improving the reliability and stability of the connection nodes.

[0007] Optionally, the horizontal adjustment support assembly includes: A support plate abutting against one side of the main beam; A high-strength screw is fixed to the main beam. The support plate is provided with a plurality of horizontal adjustment holes in the form of long strips in the horizontal direction. One end of the high-strength screw passes through the horizontal adjustment hole and is threadedly connected with a plurality of locking nuts.

[0008] By adopting the above technical solution, when adjusting the connection position between the secondary beam and the main beam through the horizontal adjustment support assembly, since the horizontal adjustment hole is arranged in an elongated strip shape, it can allow the support plate to move horizontally within a certain range, thereby gradually adjusting the relative position between the support plate and the main beam until the required horizontal adjustment accuracy is achieved. Then, by tightening the locking nut, the horizontal connection position between the secondary beam and the main beam can be precisely adjusted. The relative connection position between the secondary beam and the main beam can be flexibly adjusted in the horizontal direction by simply adjusting the locking nut, solving the problem of horizontal misalignment caused by installation size deviation or production error, thereby completing precise positioning, improving installation efficiency, and adapting to the needs of rapid construction of prefabricated buildings. In addition, the elongated horizontal adjustment hole gives the connection node greater flexibility, improving the applicability and economy of the overall structure.

[0009] Optionally, the vertical adjustment support assembly includes: A support seat, fixedly arranged on one side of the support plate; An adjusting block is slidably connected to the support base along the height direction of the support base, and the top of the adjusting block extends out of the support base; A locking block is slidably connected to the support base in a direction perpendicular to the height of the support base, wherein the locking block and the adjustment block abut against each other, and both abutting sides are inclined; An adjusting screw is threadedly connected to the support seat, one end of the adjusting screw is rotatably connected to the locking block, and the other end extends out of the support seat.

[0010] By adopting the above technical solution, when the relative connection position between the secondary crossbeam and the main crossbeam is adjusted vertically by the vertical adjustment support assembly, first, the construction worker rotates the adjustment screw. When the adjustment screw rotates, the locking block connected to it is driven to slide along the vertical support seat height direction. Since the side where the locking block and the adjustment block abut each other is set in an inclined surface, the sliding of the locking block will push the adjustment block to move along the support seat height direction. When the adjustment block moves upward, the part of its top extending outward from the support seat rises accordingly, thereby adjusting the vertical position of one end of the secondary crossbeam. Conversely, rotating the adjustment screw in the opposite direction can move the adjustment block downward, lowering the vertical position of one end of the secondary crossbeam. The cooperation between the adjustment screw and the locking block, and the locking block and the adjustment block can achieve precise adjustment of the vertical relative connection position between the secondary crossbeam and the main crossbeam, solve the vertical misalignment problem caused by component production error or installation deviation, and improve the adaptability and installation accuracy of the connection node. In addition, the inclined design between the locking block and the adjustment block can provide stable supporting force after adjustment, so that the position of the secondary beam can be firmly locked after the adjustment is completed, ensuring the stability of the support of the secondary beam structure after adjustment, thereby improving the stability and reliability of the entire connection node and the convenience of on-site installation.

[0011] Optionally, a connecting plate is arranged at intervals below the adjusting block, the connecting plate is fixedly connected to the support seat, and a pull-down anti-detachment spring is fixed between the connecting plate and the adjusting block, and the pull-down anti-detachment spring is used to give the adjusting block a downward pulling force.

[0012] By adopting the above technical solution, the pull-down anti-detachment spring prevents the adjustment block from accidentally separating from the support base due to external forces during adjustment, thereby improving the stability of the connection node. At the same time, the pull-down anti-detachment spring can exert a downward pulling force on the adjustment block, making it less likely to get stuck when the adjustment block is positioned in the support base and adjusted downward.

[0013] Optionally, guide rods parallel to the adjusting screw's own axis are provided on both sides of the adjusting screw, one end of the guide rod is fixedly connected to the locking block, and the other end is slidably connected to the support seat.

[0014] By adopting the above technical solution, the guide rod can prevent the adjusting screw from shifting or tilting during rotation, and provide a certain supporting force for the locking block, so that the force on both sides of the locking piece is evenly distributed, while reducing the stress concentration at the rotating connection between the adjusting screw and the locking block.

[0015] Optionally, one end of the adjusting screw extending out of the outside of the support seat is threadedly connected to a self-locking nut.

[0016] By adopting the above technical solution, the self-locking nut can prevent the adjusting screw from loosening due to external vibration or load changes, thereby improving the stability of the connection node.

[0017] Optionally, the fixing component includes: a fixed plate abutting against the top of the secondary beam; A plurality of fixing bolts are provided between the fixing plate and the support base, wherein the fixing plate and the support base are respectively provided with a first locking groove and a second locking groove which are arranged in an elongated strip and are adapted to the fixing bolts, and one end of the fixing screw passes through the first locking groove and the second locking groove and is threadedly connected to a fixing nut; a rotating shaft, rotatably connected to the support plate; A connecting block is fixedly mounted on one end of the rotating shaft, and a connecting groove is provided on one side of the secondary beam along its length direction. The connecting block is slidably engaged in the connecting groove, and an assembly gap is reserved between the connecting block and the connecting groove; The bearing seat is rotatably connected to the top of the adjusting block, and the rotation connection of the bearing seat is located in the middle position of the bearing seat, and the top of the bearing seat is in contact with the secondary beam.

[0018] By adopting the above technical solution, the fixing assembly can realize the adjustment and fixation of the torsion angle of the secondary beam along the horizontal axis. During the adjustment process, the connecting block is first driven to rotate by the rotating shaft so that the connecting groove of the secondary beam can be inserted into the connecting block, and then the secondary beam is moved downward so that the connecting block is completely slid and inserted into the connecting groove. Then, the angle of the secondary beam is adjusted to keep the upper surface of the secondary beam horizontal. The rotation connection of the bearing seat allows the secondary beam to maintain a smooth transition during the adjustment process, avoiding structural instability due to angle changes. After the upper surface of the secondary beam is rotated and adjusted to a horizontal state, the fixing bolt is passed through the first locking groove of the fixing plate and the second locking groove of the support seat, and locked with a fixing nut to realize the adjustment and fixation of the torsion angle of the secondary beam along the horizontal axis. The first locking groove and the second locking groove are arranged in an elongated shape, which expands the adjustment range of the fixing bolt. At the same time, the coordinated use of the rotating shaft, the connecting block and the bearing seat makes the angle adjustment of the secondary beam more precise and simple, reducing the difficulty of on-site installation and adjustment. In addition, the middle position rotation connection method of the bearing seat improves the stability of the structure, making it less likely for the secondary beam to shift or loosen when bearing load; the sliding connection and assembly gap between the connecting block and the secondary beam connecting groove not only facilitate the connection between the connecting block and the secondary beam, but also enables the secondary beam to be fine-tuned in the lateral and torsional directions, further improving the installation accuracy.

[0019] Optionally, a limit block is provided on the outer fixed sleeve of the rotating shaft, a limit slot is provided in the supporting plate, the limit block can slide in the limit slot, and the rotation angle of the rotating shaft along its own axis is α, -8°≤α≤8°.

[0020] By adopting the above technical solution, the cooperation between the limit block and the limit groove can limit the rotation range of the rotating shaft, ensuring that the rotation angle of the rotating shaft is controlled between -8° and 8°, preventing the secondary beam from being unstable due to excessive torsion, and to a certain extent adapting to the slight deviations that may exist at the construction site, thereby improving the installation tolerance of the connection node.

[0021] Optionally, a reinforcing support block is fixedly provided on one side of the fixing plate, a plug-in slot is provided on the top of the support plate, and the reinforcing support block is plugged into the plug-in slot.

[0022] By adopting the above technical solution, strengthening the cooperation between the support block and the plug-in slot can enhance the connection stability between the fixed plate and the support plate and between the rotating shaft and the support plate, reduce the stress at the connection between the rotating shaft and the support plate, and improve the structural reliability of the entire connection node.

[0023] Optionally, a fixing groove is provided at the top of the secondary beam, the fixing plate is inserted into the fixing groove, and the top of the fixing plate is not higher than the top of the secondary beam, the first locking groove is a sunken groove, and the bolt head of the fixing bolt is located in the sunken groove.

[0024] By adopting the above technical solution, the top of the fixing plate is not higher than the top of the secondary beam, so that the top of the secondary beam remains flush, which facilitates the subsequent top of the secondary beam to better contact with the bottom of the assembled floor; the first locking groove on the fixing plate is a recessed groove for accommodating the bolt head of the fixing bolt, further ensuring that the installation of the fixing bolt will not protrude from the surface of the fixing plate, preventing installation interference problems caused by exposed bolt heads.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The coordinated use of horizontal and vertical support components and fixing components enables precise adjustment and fixation of the main and secondary beams in three dimensions: horizontal, vertical, and torsional. This effectively compensates for horizontal and vertical misalignment caused by installation dimension deviations or component production errors, greatly reducing installation difficulty and improving construction efficiency. The entire connection node does not require on-site welding or re-drilling, further reducing construction costs and time, meeting the efficiency and environmental protection requirements of modern buildings, while also improving the reliability and stability of the connection nodes. 2. The horizontal adjustment support assembly allows for flexible adjustment of the relative connection position between the secondary and primary beams in the horizontal direction by simply adjusting the locking nut. This solves the problem of lateral misalignment caused by installation dimension deviations or production errors, thereby achieving precise positioning, improving installation efficiency, and adapting to the needs of rapid construction of prefabricated buildings. In addition, the elongated horizontal adjustment holes provide greater flexibility in the connection nodes, improving the applicability and cost-effectiveness of the overall structure. 3. The vertical adjustment support assembly, through the coordination between the adjustment screw and the locking block, and the locking block and the adjustment block, allows precise adjustment of the vertical connection position between the secondary beam and the main beam. This resolves vertical misalignment issues caused by component production errors or installation deviations, and improves the adaptability and installation accuracy of the connection node. Furthermore, the beveled design between the locking block and the adjustment block provides stable support after adjustment, allowing the secondary beam to be securely locked in place after adjustment, ensuring the structural stability of the secondary beam after adjustment. This improves the stability and reliability of the entire connection node, as well as the ease of on-site installation. 4. The use of a rotating shaft, connecting block, and bearing seat in the fixing assembly makes the angle adjustment of the secondary beam more precise and simple, reducing the difficulty of on-site installation and adjustment. In addition, the rotating connection method in the middle position of the bearing seat improves the stability of the structure, making it less likely for the secondary beam to shift or loosen when bearing loads; the sliding connection and assembly gap between the connecting block and the secondary beam connecting groove not only facilitate the connection between the connecting block and the secondary beam, but also enables the secondary beam to be fine-tuned in the lateral and torsional directions, further improving installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the prefabricated steel structure connection node in this application; Figure 2 1. It is a structural diagram showing an adjustment connection mechanism; Figure 3 is a structural schematic diagram showing another perspective of the adjustment connection mechanism; Figure 4 is a partial cross-sectional view showing a vertical adjustment support assembly; Figure 5 It is a schematic diagram of a partial exploded structure showing a fixed component; Figure 6 It is a partial cross-sectional view showing the fixing component.

[0027] Explanation of reference numerals: 1. Steel column; 2. Main crossbeam; 3. Secondary crossbeam; 31. Connecting groove; 32. Fixing groove; 4. Adjusting connecting mechanism; 41. Horizontal adjustment support assembly; 411. Support plate; 4111. Horizontal adjustment hole; 4112. Limiting groove; 4113. Insertion groove; 412. High-strength screw; 413. Locking nut; 42. Vertical adjustment support assembly; 421. Support seat; 4211. Second locking groove; 422. Adjusting block ; 423, locking block; 424, adjusting screw; 425, handwheel; 426, connecting plate; 427, pull-down anti-drop spring; 428, guide rod; 429, self-locking nut; 43, fixing assembly; 431, fixing plate; 4311, first locking groove; 432, fixing bolt; 433, rotating shaft; 434, connecting block; 435, bearing seat; 436, fixing nut; 437, limit block; 438, strengthening support block. DETAILED DESCRIPTION

[0028] The following is combined with Figures 1-6 This application is described in further detail.

[0029] After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

[0030] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] The embodiment of the present application discloses a prefabricated steel structure connection node. Figure 1 and Figure 2The prefabricated steel structure connection node includes a main beam 2 for connecting between adjacent steel columns 1, a secondary beam 3 connected between two main beams 2, and an adjustable connection mechanism 4 provided between the main beam 2 and the secondary beam 3. The adjustable connection mechanism 4 includes a horizontal adjustment support assembly 41, a vertical adjustment support assembly 42, and a fixing assembly 43. Specifically, the horizontal adjustment support assembly 41 is used to adjust the relative connection position between the secondary beam 3 and the main beam 2 in the horizontal direction; the vertical adjustment support assembly 42 is used to adjust the relative connection position between the secondary beam 3 and the main beam 2 in the vertical direction; and the fixing assembly 43 is used to adjust and fix the torsion angle of the secondary beam 3 along the horizontal axis.

[0032] During the actual construction and assembly process, the main beam 2 is first installed between adjacent steel columns 1. The secondary beam 3 is then placed between the two main beams 2 and the secondary beam 3 is connected and fixed to the main beam 2 using the vertical adjustment support assembly 42 and the fixing assembly 43. During the assembly of the main beams 2 and secondary beams 3, the horizontal adjustment support assembly 41 in the adjusting connection mechanism 4 can flexibly adjust the relative connection position between the two ends of the secondary beam 3 along the length direction and the main beams 2 on both sides. At the same time, the vertical adjustment support assembly 42 can vertically adjust the relative height of the two ends of the secondary beam 3 along the length direction, solving the problem of vertical misalignment caused by installation dimension deviation or production error. Finally, the fixing assembly 43 finely adjusts and fixes the torsion angle of the secondary beam 3 along the horizontal axis, so that the top surface of the secondary beam 3 along its length direction remains horizontal, thereby better contacting the bottom of the assembly floor. The coordinated action of the horizontal adjustment support assembly 41, the vertical adjustment support assembly 42, and the fixing assembly 43 allows precise adjustment of the relative position between the main beam 2 and the secondary beam 3, solving the problem of installation deviation.

[0033] Specifically, refer to Figure 2 and Figure 3 The horizontal adjustment support assembly 41 includes a support plate 411 and a high-strength screw 412. The support plate 411 is in contact with one side of the main beam 2, and is provided with a plurality of horizontal adjustment holes 4111 arranged in a long strip along the horizontal direction, which are used to adapt to a certain horizontal adjustment range. The high-strength screw 412 is fixed to the main beam 2, and one end passes through the horizontal adjustment hole 4111 and is threadedly connected with a plurality of locking nuts 413, which are used to lock the position of the support plate 411. The support plate 411 can be made of steel plate material, and the thickness is designed to range from 15mm to 30mm according to the actual stress conditions; the high-strength screw 412 can be selected from standard parts with a diameter between M16 and M24 according to actual needs, and the locking nuts 413 should match them. The length and distribution of the horizontal adjustment holes 4111 should be determined according to the possible horizontal adjustment range, and are usually set to be about 20% larger than the maximum expected deviation.

[0034] When adjusting the connection between the secondary crossbeam 3 and the main crossbeam 2 using the horizontal adjustment support assembly 41, the elongated horizontal adjustment hole 4111 allows the support plate 411 to move horizontally within a certain range, thereby gradually adjusting the relative position between the support plate 411 and the main crossbeam 2 until the desired horizontal adjustment accuracy is achieved. The locking nut 413 is then tightened to achieve precise adjustment of the horizontal connection between the secondary crossbeam 3 and the main crossbeam 2.

[0035] Specifically, refer to Figure 4 and Figure 5 The vertical adjustment support assembly 42 includes a support seat 421, an adjustment block 422, a locking block 423 and an adjustment screw 424. The support seat 421 is fixed to one side of the support plate 411, and the internal structure is designed to accommodate the sliding space of the adjustment block 422 and the locking block 423. The adjustment block 422 is connected to the support seat 421 by sliding along the height direction of the support seat 421, and the top extends out of the support seat 421. The locking block 423 is connected to the support seat 421 by sliding along the height direction of the vertical support seat 421. The locking block 423 and the adjustment block 422 abut against each other, and the abutting side is inclined. The angle of the inclined surface is generally set between 30° and 45°. The inclined surface design between the locking block 423 and the adjustment block 422 can provide extremely stable support bearing capacity after adjustment, so that the position of the secondary beam 3 can be firmly locked after the adjustment is completed, ensuring the stability of the structural support of the secondary beam 3 after adjustment. The adjusting screw 424 is threadedly connected to the support seat 421, one end of which is rotatably connected to the locking block 423 and the other end extends out of the support seat 421. The end of the adjusting screw 424 extending out of the support seat 421 is fixed with a handwheel 425 to facilitate operation by construction personnel.

[0036] To further improve reliability, refer to Figure 4 and Figure 5 A connecting plate 426 is provided below the adjusting block 422, and the connecting plate 426 is fixedly connected to the support seat 421. A pull-down anti-slip spring 427 is fixed between the connecting plate 426 and the adjusting block 422. The pull-down anti-slip spring 427 is used to give the adjusting block 422 a downward pulling force. The pull-down anti-slip spring 427 is made of corrosion-resistant stainless steel wire. Its elastic force is calculated to ensure that it will not be too tight to affect the adjustment operation, nor too loose to cause the adjusting block 422 to loosen. At the same time, both sides of the adjusting screw 424 are provided with a guide rod 428 parallel to its own axis. The guide rod 428 is slidably connected to the support seat 421 to prevent the adjusting screw 424 from deviating during the rotation process. One end of the adjusting screw 424 extending outward from the support seat 421 is threadedly connected to a self-locking nut 429, which can further lock the position of the adjusting screw 424 after the adjustment is completed.

[0037] When adjusting the relative connection position between the secondary beam 3 and the main beam 2 vertically by means of the vertical adjustment support assembly 42, the construction worker first rotates the handwheel 425, which drives the adjustment screw 424 to rotate. When the adjustment screw 424 rotates, the locking block 423 connected to it slides along the height direction of the vertical support seat 421. Because the sides where the locking block 423 and the adjustment block 422 abut each other are both inclined, the sliding of the locking block 423 pushes the adjustment block 422 to move along the height direction of the support seat 421. When the adjustment block 422 moves upward, the portion of its top extending outside the support seat 421 rises accordingly, thereby adjusting the vertical position of one end of the secondary beam 3. Conversely, rotating the adjustment screw 424 in the opposite direction can move the adjustment block 422 downward, lowering the vertical position of one end of the secondary beam 3.

[0038] Specifically, refer to Figure 4 and Figure 5 The fixing assembly 43 includes a fixing plate 431, a fixing bolt 432, a rotating shaft 433, a connecting block 434, a bearing seat 435, etc. The fixing plate 431 abuts against the top of the secondary beam 3, and the fixing bolt 432 is arranged between the fixing plate 431 and the support seat 421, and a plurality of fixing bolts are provided. A first locking groove 4311 and a second locking groove 4211 arranged in a long strip are respectively provided on the fixing plate 431 and the support seat 421. One end of the fixing bolt 432 passes through the first locking groove 4311 and the second locking groove 4211 and is threadedly connected to a fixing nut 436. The number and distribution of the fixing bolts 432 should be reasonably designed, generally not less than 4. The bearing seat 435 is rotatably connected to the top of the adjusting block 422, and the rotating connection of the bearing seat 435 is located in the middle position of the bearing seat 435. The top of the bearing seat 435 abuts against the secondary beam 3.

[0039] Reference Figure 5 and Figure 6The rotating shaft 433 is rotatably connected to the support plate 411. A connecting block 434 is fixed to one end of the rotating shaft 433. The connecting block 434 is a T-shaped block, which can also be a dovetail block. A connecting groove 31 is provided along one side of the secondary crossbeam 3 along its length. The connecting groove 31 is a T-shaped slot and is arranged along the height direction of the secondary crossbeam 3. The connecting block 434 slides and snaps into the connecting groove 31, and an assembly gap is reserved between the two, allowing the secondary crossbeam 3 to be twisted and adjusted at a small angle along the horizontal axis. A limit block 437 is fixedly sleeved on the outside of the rotating shaft 433. A limit slot 4112 is provided in the support plate 411. The limit block 437 can slide within the limit slot 4112. The rotation angle of the rotating shaft 433 along its own axis is α, -8°≤α≤8°. In addition, a reinforcing support block 438 is fixed to one side of the fixing plate 431. A slot 4113 is defined at the top of the support plate 411, into which the reinforcing support block 438 is inserted, increasing the connection strength. A fixing slot 32 is defined at the top of the secondary crossbeam 3, into which the fixing plate 431 is inserted. The top of the fixing plate 431 is positioned no higher than the top of the secondary crossbeam 3. The first locking slot 4311 on the fixing plate 431 is a sunken slot, into which the bolt head of the fixing bolt 432 is located.

[0040] The fixing assembly 43 is capable of adjusting and fixing the torsional angle of the secondary beam 3 along the horizontal axis. During the adjustment process, the connecting block 434 is first rotated by the rotating shaft 433 so that the connecting slot 31 of the secondary beam 3 can be inserted into the connecting block 434. The secondary beam 3 is then moved downward so that the connecting block 434 is completely slid and inserted into the connecting slot 31. The angle of the secondary beam 3 is then adjusted so that the upper surface of the secondary beam 3 remains horizontal. The rotational connection of the bearing seat 435 allows the secondary beam 3 to maintain a smooth transition during the adjustment process, avoiding structural instability due to angle changes. After the upper surface of the secondary beam 3 is rotated and adjusted to a horizontal state, the fixing bolt 432 is passed through the first locking slot 4311 of the fixing plate 431 and the second locking slot 4211 of the support seat 421, and is tightened with the fixing nut 436 to achieve the adjustment and fixing of the torsional angle of the secondary beam 3 along the horizontal axis. The sliding engagement and assembly gap between the connecting block 434 and the connecting groove 31 of the secondary beam 3 not only facilitates the connection between the connecting block 434 and the secondary beam 3, but also enables the secondary beam 3 to be fine-tuned in the lateral and torsional directions, further improving the installation accuracy.

[0041] The implementation principle of an assembled steel structure connection node in an embodiment of the present application is: through the coordinated use of the horizontal adjustment support component 41, the vertical adjustment support component 42, and the fixing component 43, the main beam 2 and the secondary beam 3 can be accurately adjusted and fixed in three dimensions: horizontal, vertical, and torsional angle, effectively compensating for the horizontal and vertical misalignment caused by installation size deviation or component production error, greatly reducing the installation difficulty, improving construction efficiency, and the entire connection node does not require on-site welding or re-drilling, further reducing construction costs and time, meeting the requirements of modern buildings for efficiency and environmental protection, and at the same time improving the reliability and stability of the connection node.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A prefabricated steel structure connection node, characterized in that: include: A main crossbeam (2) is used to connect between adjacent steel columns (1); A secondary crossbeam (3) connected between the two main crossbeams (2); An adjustment connection mechanism (4) is arranged between the main crossbeam (2) and the secondary crossbeam (3), and comprises a horizontal adjustment support assembly (41), a vertical adjustment support assembly (42) and a fixing assembly (43), wherein the horizontal adjustment support assembly (41) is used to adjust the relative connection position between the secondary crossbeam (3) and the main crossbeam (2) in the horizontal direction; the vertical adjustment support assembly (42) is used to adjust the relative connection position between the secondary crossbeam (3) and the main crossbeam (2) in the vertical direction; and the fixing assembly (43) is used to adjust and fix the torsion angle of the secondary crossbeam (3) along the horizontal axis.

2. The assembled steel structure connection node according to claim 1, characterized in that: The horizontal adjustment support assembly (41) comprises: A support plate (411) abuts against one side of the main beam (2); A high-strength screw (412) is fixed to the main crossbeam (2); the support plate (411) is provided with a plurality of horizontal adjustment holes (4111) in the form of long strips in the horizontal direction; one end of the high-strength screw (412) passes through the horizontal adjustment hole (4111) and is threadedly connected to a plurality of locking nuts (413).

3. The assembled steel structure connection node according to claim 2, characterized in that: The vertical adjustment support assembly (42) comprises: A support seat (421) is fixedly mounted on one side of the support plate (411); An adjusting block (422) is slidably connected to the support seat (421) along the height direction of the support seat (421), and the top of the adjusting block (422) extends out of the outside of the support seat (421); A locking block (423) is slidably connected to the support seat (421) along a height direction perpendicular to the support seat (421), and the locking block (423) and the adjusting block (422) abut against each other, and one side of the abutting blocks is inclined; An adjusting screw (424) is threadedly connected to the support seat (421), one end of the adjusting screw (424) is rotatably connected to the locking block (423), and the other end extends out of the support seat (421).

4. The assembled steel structure connection node according to claim 3, characterized in that: A connecting plate (426) is provided below the adjusting block (422) at intervals. The connecting plate (426) is fixedly connected to the supporting seat (421). A downward pull-out anti-slip spring (427) is fixed between the connecting plate (426) and the adjusting block (422). The downward pull-out anti-slip spring (427) is used to apply a downward pulling force to the adjusting block (422).

5. The assembled steel structure connection node according to claim 3, characterized in that: Guide rods (428) parallel to the axis of the adjusting screw (424) are provided on both sides thereof. One end of the guide rod (428) is fixedly connected to the locking block (423), and the other end is slidably connected to the support seat (421).

6. The assembled steel structure connection node according to claim 3, characterized in that: One end of the adjusting screw (424) extending outward from the support seat (421) is threadedly connected to a self-locking nut (429).

7. The assembled steel structure connection node according to claim 3, characterized in that: The fixing assembly (43) comprises: A fixed plate (431) abuts against the top of the secondary beam (3); A fixing bolt (432) is provided between the fixing plate (431) and the support seat (421), and a plurality of fixing bolts (432) are provided. The fixing plate (431) and the support seat (421) are respectively provided with a first locking groove (4311) and a second locking groove (4211) which are arranged in an elongated strip and are adapted to the fixing bolt (432). One end of the fixing screw passes through the first locking groove (4311) and the second locking groove (4211) and is threadedly connected with a fixing nut (436). a rotating shaft (433) rotatably connected to the support plate (411); A connecting block (434) is fixedly arranged at one end of the rotating shaft (433); a connecting groove (31) is provided on one side of the secondary crossbeam (3) along its length direction; the connecting block (434) is slidably engaged in the connecting groove (31), and an assembly gap is reserved between the connecting block (434) and the connecting groove (31); The bearing seat (435) is rotatably connected to the top of the adjustment block (422), and the rotation connection of the bearing seat (435) is located in the middle position of the bearing seat (435), and the top of the bearing seat (435) is in contact with the secondary beam (3).

8. The assembled steel structure connection node according to claim 7, characterized in that: A limit block (437) is fixedly sleeved outside the rotating shaft (433), a limit slot (4112) is provided in the supporting plate (411), and the limit block (437) can slide in the limit slot (4112). The rotation angle of the rotating shaft (433) along its own axis is α, -8°≤α≤8°.

9. The assembled steel structure connection node according to claim 7, characterized in that: A reinforcing support block (438) is fixedly provided on one side of the fixing plate (431), a plug-in slot (4113) is provided on the top of the support plate (411), and the reinforcing support block (438) is plugged into the plug-in slot (4113).

10. The assembled steel structure connection node according to claim 9, characterized in that: A fixing groove (32) is provided at the top of the secondary crossbeam (3), the fixing plate (431) is inserted into the fixing groove (32), and the top of the fixing plate (431) is not higher than the top of the secondary crossbeam (3), the first locking groove (4311) is a sunken groove, and the bolt head of the fixing bolt (432) is located in the sunken groove.

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