Fabricated steel beam-column joint

Abstract

The application relates to the technical field of steel structure buildings, in particular to a fabricated steel structure beam-column joint, which comprises a first connecting piece, a second connecting piece and an adjusting mechanism. The first connecting piece and the second connecting piece are connected through the adjusting mechanism, the adjusting mechanism is composed of a driving device, a threaded rod, a guide rod and a sliding assembly, and can realize horizontal expansion and contraction; a supporting mechanism is arranged on the sliding assembly and can be folded up and down, so that the expansion and contraction function of the joint is matched, and the occupied space is reduced. Through the synergistic effect of the adjusting mechanism and the supporting mechanism, automatic unfolding and folding of the joint are realized, transportation and storage are facilitated, finally fixing is carried out by using mounting holes and fasteners, and the structural stability is ensured. The design significantly improves the installation flexibility and convenience, and is suitable for the field of fabricated steel structure buildings.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, specifically a prefabricated steel structure beam-column joint. Background Technology

[0002] In the field of modern architecture, steel structures are widely used in industrial and civil buildings due to their advantages such as high strength, light weight, and fast construction speed. Prefabricated steel structures, as an important branch of steel structure systems, further improve construction efficiency and reduce environmental pollution through factory prefabrication and on-site assembly, aligning with the development trend of green buildings. However, in prefabricated steel structure systems, beam-column joints are critical connection points, and their performance directly affects the overall structural safety, stability, and seismic resistance.

[0003] Currently, traditional steel structure beam-column joints mostly employ welding or bolting connections. While welded joints offer high connection strength, the on-site welding process is complex, requires a demanding construction environment, and is highly susceptible to human error, making them prone to defects. Bolted connections, while convenient for on-site assembly, have relatively weak joint stiffness, making them unsuitable for certain high-performance structures. Furthermore, existing joint designs often require complex auxiliary tools or equipment during assembly, increasing construction difficulty and cost. Additionally, some joint designs lack adequate seismic performance, failing to meet the building requirements of earthquake-prone areas.

[0004] Therefore, developing a steel beam-column joint that can guarantee both the strength and stiffness of the node connection and possesses good assembly performance has become a pressing technical challenge in the field of prefabricated steel structures. This invention aims to provide a novel prefabricated steel beam-column joint to overcome the shortcomings of existing technologies, improve the assembly efficiency, mechanical properties, and seismic resistance of the joint, and provide technical support for the further promotion and application of prefabricated steel structures. Utility Model Content

[0005] A prefabricated steel structure beam-column joint includes a first connector and a second connector. An adjustment mechanism is provided between the first and second connectors, which are connected via this mechanism. When the drive device on the first connector rotates forward, the adjustment mechanism unfolds, moving the second connector away from the first connector and simultaneously pushing a sliding component on the second connector to move. This allows the support mechanisms on the first and second connectors to unfold synchronously. A drive device is fixedly installed inside the first connector, and a threaded rod is provided between the drive device and the first connector. One end of the threaded rod is rotatably connected to the first connector. The other end of the threaded rod is fixedly connected to the output shaft of the drive device. A fixed bracket is fixedly installed inside the second connector. A guide rod is fixedly connected between the fixed bracket and the second connector. Sliding components are sleeved on the outside of both the guide rod and the threaded rod. One of the sliding components is slidably connected to the guide rod, and the other sliding component is threadedly connected to the threaded rod. A support mechanism is provided on the top of the sliding component. The support mechanism can be folded up and down. With the horizontal expansion and contraction between the first connector and the second connector, the entire node structure occupies less space, which is beneficial for its transportation and storage, and improves the flexibility and convenience of installation.

[0006] The adjustment mechanism includes a first adjustment plate, which is rotatably connected to a first connecting member. A second adjustment plate is rotatably connected to the top of the first adjustment plate. The second adjustment plate is rotatably connected to a sliding component. The first and second adjustment plates are of the same specifications and are arranged in a cross configuration. There are two sets of the first and second adjustment plates, which are rotatably connected end to end. In the set closest to the second connecting member, the first adjustment plate is rotatably connected to the sliding component on the guide rod, while the second adjustment plate is directly rotatably connected to the second connecting member.

[0007] Both the first connector and the second connector have mounting holes inside. Each connector has two mounting holes. The mounting holes are used to insert fasteners to finally fix the whole assembly.

[0008] The support mechanism includes a first support plate, which is rotatably connected to a sliding assembly. A first connecting rod is provided between the first support plate and a first connecting member. Under the action of the first connecting rod, when the threaded rod drives the sliding assembly to move, the first support plate on the sliding assembly will be pushed and pulled by the first connecting rod, thereby causing the first support plate to automatically rotate upward or downward. One end of the first connecting rod is rotatably connected to the first connecting member, and the other end of the first connecting rod is rotatably connected to the first support plate. A first side plate is rotatably connected to one side of the first support plate, and a second side plate is rotatably connected to the other side of the first support plate. A second support plate is rotatably connected between the first side plate and the second side plate. Racks are fixedly connected to the outside of both the second support plate and the first support plate. The components are interlocked. A second connecting rod is provided between the first side plate and the sliding assembly. One end of the second connecting rod is rotatably connected to the first side plate, and the other end of the second connecting rod is rotatably connected to the sliding assembly. The four positions of the first side plate and the sliding assembly, the first support plate and the sliding assembly, and the first support plate and the sliding assembly form a parallelogram, ensuring that the second connecting rod and the first support plate remain parallel. When the first support plate rotates, the second connecting rod pushes and pulls the first side plate. With the cooperation of two meshing racks, the first side plate drives the second support plate to rotate around the first support plate until the second support plate and the first support plate are in the same straight line or parallel to each other.

[0009] Both the first and second support plates have internal storage cavities. A rotating shaft is rotatably connected inside each storage cavity. A winding reel is sleeved on the outside of the rotating shaft. Multiple winding reels are arranged on the rotating shaft at equal intervals. The winding reels are fixedly connected to the rotating shaft. A steel cable is wound around the outside of the winding reel and is fixedly connected to the winding reel. A torsion spring is sleeved on the outside of the rotating shaft and between the storage cavity and the winding reel. One end of the torsion spring is fixedly connected to the rotating shaft, and the other end of the torsion spring is fixedly connected to the storage cavity. The torsion spring is mainly used to drive the rotating shaft to rotate automatically, and the rotating shaft then drives the winding reel to rotate and wind up the steel cable.

[0010] The storage cavity is detachably connected to a sealing plate, which has a through hole inside. The through hole is used in conjunction with a steel cable. The first support plate and the second support plate are fixed to the sealing plate by bolts. The sealing plate can seal the storage cavity on the first support plate and the second support plate to prevent foreign objects from entering the storage cavity. The steel cable extends directly to the outside through the through hole on the sealing plate.

[0011] The first and second connectors are both fixedly connected to guide rails. The sliding component has a guide groove on the side near the guide rail. The guide groove works in conjunction with the guide rail to limit the sliding component, making the sliding component move more smoothly.

[0012] The second connector has a groove inside, and a ball is rotatably connected inside the groove. There are two grooves, which are symmetrically distributed. When the drive device is started, the drive device will drive the sliding component to move through the threaded rod. The sliding component uses the adjustment mechanism to push the second connector to move, so that the second connector moves away from or closer to the first connector, thereby realizing the automatic unfolding and folding of the whole.

[0013] The first connector has a control panel fixedly installed on its exterior. The drive device is electrically connected to the control panel. The electrical equipment is powered by an external power source, such as a battery, and the start, stop, forward and reverse rotation of the drive device are controlled by the control panel.

[0014] Beneficial effects: This application achieves automatic unfolding and folding of nodes through the coordinated action of the adjustment mechanism and the support mechanism, facilitating transportation and storage. Simultaneously, mounting holes and fasteners are used for final fixation, ensuring structural stability. This design significantly improves installation flexibility and convenience, making it suitable for prefabricated steel structure buildings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is a cross-sectional view of the present invention;

[0018] Figure 4 This is an enlarged view of section A of this utility model.

[0019] The attached figures are labeled as follows:

[0020] 1. First connecting member; 2. Second connecting member; 3. Adjusting mechanism; 4. Drive device; 5. Threaded rod; 6. Fixed bracket; 7. Guide rod; 8. Sliding assembly; 9. Support mechanism; 10. First adjusting plate; 11. Second adjusting plate; 12. Mounting hole; 13. First support plate; 14. First connecting rod; 15. First side plate; 16. Second side plate; 17. Second support plate; 18. Rack. Detailed Implementation

[0021] This utility model relates to a prefabricated steel structure beam-column joint, the specific implementation of which is described below in conjunction with the appendix. Figure 1 To be continued Figure 3 This utility model will be described in detail below. First, see [link to relevant documentation]. Figure 1 This figure is a schematic diagram of the overall structure of this utility model, showing the connection relationship between the first connecting member 1 and the second connecting member 2, as well as the arrangement of the adjustment mechanism 3, the support mechanism 9, and the drive device 4. The first connecting member 1 and the second connecting member 2 are connected by the adjustment mechanism 3, which includes a first adjustment plate 10 and a second adjustment plate 11. Their cross arrangement allows them to be unfolded or folded. The drive device 4 is fixedly installed inside the first connecting member 1. The output shaft of the drive device 4 is fixedly connected to one end of the threaded rod 5, and the other end of the threaded rod 5 is rotatably connected to the first connecting member 1. The fixed bracket 6 is fixedly installed inside the second connecting member 2. The fixed bracket 6 is fixedly connected to the guide rod 7. Sliding components 8 are sleeved on the outside of both the guide rod 7 and the threaded rod 5. One sliding component 8 is slidably connected to the guide rod 7, and the other sliding component 8 is threadedly connected to the threaded rod 5. The top of the sliding component 8 is provided with the support mechanism 9. The support mechanism 9 can be folded up and down, and in conjunction with the horizontal expansion and contraction between the first connecting member 1 and the second connecting member 2, it achieves the goal of reducing the space occupied by the entire node structure.

[0022] In actual operation, when the drive device 4 is running in the forward direction, its output shaft drives the threaded rod 5 to rotate. The rotation of the threaded rod 5 causes the sliding component 8, which is threaded to it, to move along the axial direction of the threaded rod 5. The movement of the sliding component 8 pushes the second connecting member 2 away from the first connecting member 1 through the adjustment mechanism 3, and at the same time, the support mechanism 9 on the sliding component 8 also unfolds. Specifically, the first adjustment plate 10 of the adjustment mechanism 3 is rotatably connected to the first connecting member 1, and the second adjustment plate 11 is rotatably connected to the sliding component 8. The first adjustment plate 10 and the second adjustment plate 11 are arranged crosswise and connected end to end. In the set of adjustment mechanisms close to the second connecting member 2, the first adjustment plate 10 is rotatably connected to the sliding component 8 on the guide rod 7, while the second adjustment plate 11 is directly rotatably connected to the second connecting member 2. When the sliding component 8 moves along the threaded rod 5, the included angle between the first adjustment plate 10 and the second adjustment plate 11 changes, thereby pushing the second connecting member 2 away from the first connecting member 1 and causing the support mechanism 9 on the sliding component 8 to unfold synchronously.

[0023] See further Figure 2This figure is a schematic diagram of the adjustment mechanism 3 in its unfolded state, highlighting the cross arrangement and rotational connection of the first adjustment plate 10 and the second adjustment plate 11. It also shows the movement of the sliding assembly 8 on the threaded rod 5 and the guide rod 7. As can be seen from the figure, the cross arrangement of the first adjustment plate 10 and the second adjustment plate 11 ensures stability during unfolding and folding, and their identical specifications ensure symmetrical movement. A guide groove is provided inside the sliding assembly 8 near the guide rail. This guide groove works in conjunction with the guide rail, limiting the sliding assembly 8 and making its movement more stable. Furthermore, a sliding groove is provided inside the second connecting member 2, with a ball bearing rotatably connected within it. There are two sliding grooves, symmetrically distributed. When the drive device 4 is activated, the sliding assembly 8 pushes the second connecting member 2 through the adjustment mechanism 3, causing the second connecting member 2 to move away from or towards the first connecting member 1, thereby achieving automatic unfolding and folding of the entire assembly.

[0024] See next. Figure 3This figure is a detailed structural diagram of the support mechanism 9, showing in detail the cooperation relationship between the first support plate 13, the second support plate 17, the rack 18, the winding reel, and the steel cable, as well as the internal structure of the storage cavity. The support mechanism 9 includes a first support plate 13, which is rotatably connected to the sliding assembly 8. A first connecting rod 14 is provided between the first support plate 13 and the first connecting member 1. Under the action of the first connecting rod 14, when the threaded rod 5 drives the sliding assembly 8 to move, the first support plate 13 on the sliding assembly 8 will be pushed and pulled by the first connecting rod 14, thereby causing the first support plate 13 to automatically rotate upward or downward. One end of the first connecting rod 14 is rotatably connected to the first connecting member 1, and the other end is rotatably connected to the first support plate 13. A first side plate 15 is rotatably connected to one side of the first support plate 13, and a second side plate 16 is rotatably connected to the other side. A second support plate 17 is rotatably connected between the first side plate 15 and the second side plate 16. Racks 18 are fixedly connected to the outside of both the second support plate 17 and the first support plate 13, and the two racks 18 mesh with each other. A second connecting rod 16 is provided between the first side plate 15 and the sliding assembly 8. One end of the second connecting rod 16 is rotatably connected to the first side plate 15, and the other end is rotatably connected to the sliding assembly 8. The four positions of the second connecting rod 16 (one end rotating with the first side plate 15), the other end rotating with the sliding assembly 8, the first side plate 15 rotating with the first support plate 13, and the first support plate 13 rotating with the sliding assembly 8) form a parallelogram, ensuring that the second connecting rod 16 and the first support plate 13 remain parallel at all times. When the first support plate 13 rotates, the second connecting rod 16 pushes and pulls the first side plate 15. With the cooperation of the two meshing racks 18, the first side plate 15 drives the second support plate 17 to rotate around the first support plate 13 until the second support plate 17 and the first support plate 13 are in the same straight line or parallel to each other.

[0025] Furthermore, both the first support plate 13 and the second support plate 17 have internal storage cavities. A rotating shaft is rotatably connected inside each storage cavity. Multiple spools are equidistantly distributed on the rotating shaft and are fixedly connected to it. A steel cable is wound around the spool and fixedly connected to it. A torsion spring is fitted outside the rotating shaft, between the storage cavity and the spool. One end of the torsion spring is fixedly connected to the rotating shaft, and the other end is fixedly connected to the storage cavity. The torsion spring primarily drives the rotating shaft to rotate automatically, which in turn drives the spool to rotate and wind the steel cable. A sealing plate is detachably connected inside the storage cavity. The sealing plate has a through hole that works with the steel cable. The first support plate 13 and the second support plate 17 are fixed to the sealing plate with bolts. The sealing plate seals the storage cavities on the first support plate 13 and the second support plate 17, preventing foreign objects from entering. The steel cable extends directly to the outside through the through hole in the sealing plate.

[0026] In practical applications, both the first connector 1 and the second connector 2 have mounting holes 12 inside. These mounting holes 12 are used to insert fasteners, which then secure the entire assembly. A control panel is fixedly mounted externally on the first connector 1. The drive device 4 is electrically connected to the control panel. The electrical equipment is powered by an external power source, such as a battery, and the control panel controls the start, stop, and forward / reverse rotation of the drive device 4. When the node structure needs to be unfolded, the drive device 4 is activated via the control panel. The drive device 4 rotates the threaded rod 5, causing the sliding component 8 to move axially. This movement of the sliding component 8 pushes the second connector 2 away from the first connector 1 via the adjustment mechanism 3, and simultaneously unfolds the support mechanism 9 on the sliding component 8. When the node structure needs to be folded, the drive device 4 is activated in reverse via the control panel. The drive device 4 rotates the threaded rod 5 in the opposite direction, causing the sliding component 8 to move axially in the opposite direction. This reverse movement of the sliding component 8 pulls the second connector 2 closer to the first connector 1 via the adjustment mechanism 3, and simultaneously folds the support mechanism 9 on the sliding component 8. The entire process is highly automated and easy to operate, making it suitable for the rapid installation and disassembly of prefabricated steel structure beam-column joints in various scenarios.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A prefabricated steel structure beam-column joint, comprising a first connector (1) and a second connector (2), characterized in that: An adjustment mechanism (3) is provided between the first connector (1) and the second connector (2). A drive device (4) is fixedly installed inside the first connector (1). A threaded rod (5) is provided between the drive device (4) and the first connector (1). One end of the threaded rod (5) is rotatably connected to the first connector (1), and the other end is fixedly connected to the output shaft of the drive device (4). A fixed bracket (6) is fixedly installed inside the second connector (2). A guide rod (7) is fixedly connected between the fixed bracket (6) and the second connector (2). Sliding components (8) are sleeved on the outside of both the guide rod (7) and the threaded rod (5). One of the sliding components (8) is slidably connected to the guide rod (7), and the other sliding component (8) is threadedly connected to the threaded rod (5). A support mechanism (9) is provided on the top of the sliding component (8).

2. The prefabricated steel structure beam-column joint according to claim 1, characterized in that: The adjustment mechanism (3) includes a first adjustment plate (10), which is rotatably connected to a first connecting member (1). A second adjustment plate (11) is rotatably connected to the top of the first adjustment plate (10). The second adjustment plate (11) is rotatably connected to a sliding component (8). The first adjustment plate (10) and the second adjustment plate (11) are arranged in a cross configuration and connected end to end. In a set of adjustment mechanisms near the second connecting member (2), the first adjustment plate (10) is rotatably connected to the sliding component (8) on the guide rod (7), and the second adjustment plate (11) is rotatably connected to the second connecting member (2).

3. The prefabricated steel structure beam-column joint according to claim 1, characterized in that: The first connector (1) and the second connector (2) are both provided with mounting holes (12), which are used to insert fasteners to achieve fixation.

4. The prefabricated steel structure beam-column joint according to claim 1, characterized in that: The support mechanism (9) includes a first support plate (13), which is rotatably connected to the sliding component (8). A first connecting rod (14) is provided between the first support plate (13) and the first connecting member (1). One end of the first connecting rod (14) is rotatably connected to the first connecting member (1), and the other end is rotatably connected to the first support plate (13). A first side plate (15) is rotatably connected to one side of the first support plate (13), and a second side plate (16) is rotatably connected to the other side. A second support plate (17) is rotatably connected between the first side plate (15) and the second side plate (16). A rack (18) is fixedly connected to the outside of both the second support plate (17) and the first support plate (13). The two racks (18) mesh with each other. A second connecting rod is provided between the first side plate (15) and the sliding component (8). One end of the second connecting rod is rotatably connected to the first side plate (15), and the other end is rotatably connected to the sliding component (8).

5. A prefabricated steel structure beam-column joint according to claim 4, characterized in that: The first support plate (13) and the second support plate (17) are both provided with storage cavities. A rotating shaft is rotatably connected inside the storage cavity. A winding reel is sleeved on the outside of the rotating shaft. The winding reel is fixedly connected to the rotating shaft. A steel cable is wound around the outside of the winding reel. A torsion spring is sleeved on the outside of the rotating shaft and between the storage cavity and the winding reel. One end of the torsion spring is fixedly connected to the rotating shaft, and the other end is fixedly connected to the storage cavity.

6. A prefabricated steel structure beam-column joint according to claim 5, characterized in that: The storage cavity is detachably connected to a sealing plate. The sealing plate has a through hole inside, which is used in conjunction with a steel cable. The sealing plate is connected and fixed to the first support plate (13) or the second support plate (17) by bolts.

7. A prefabricated steel structure beam-column joint according to claim 1, characterized in that: The first connector (1) and the second connector (2) are both fixedly connected to guide rails. The sliding component (8) has a guide groove on the side near the guide rail. The guide groove is used in conjunction with the guide rail. The second connector (2) has a sliding groove inside. The sliding groove is rotatably connected to a ball. There are two sliding grooves in total, and they are symmetrically distributed.

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