A wedge locking anti-slippage connecting structure of an assembled steel structure beam-column joint
Patent Information
- Application Number
- CN202611456923.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-18
- Publication Date
- 2026-10-27
Smart Images
Figure CN122980558A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of prefabricated steel structure technology, specifically to a wedge-locking anti-slip connection structure for beam-column joints in prefabricated steel structures. Background Technology
[0002] Prefabricated steel structures are widely used in multi-story and high-rise buildings due to their advantages such as fast construction speed, high degree of industrialization, and environmental friendliness and energy conservation. Beam-column joints are critical connection points in prefabricated steel structures, and their connection performance directly affects the overall load-bearing capacity, stiffness, and seismic performance of the structure. Currently, common connection methods for beam-column joints in prefabricated steel structures mainly include welding connections, high-strength bolt connections, and hybrid welding and bolt connections. Welding connections have the advantages of high stiffness and direct force transmission, but the on-site welding quality is greatly affected by environmental factors and the welder's skill level, and weld inspection is difficult. High-strength bolt connections connect beams and columns through bolt preload, making construction relatively simple, but requiring strict control of the preload and high hole precision.
[0003] However, traditional welding and bolting connections are prone to slippage at joints under large horizontal loads or seismic forces, especially at beam-column interfaces. Insufficient frictional anti-slip capacity leads to joint stiffness degradation, affecting the overall seismic performance of the structure. Existing anti-slip locking mechanisms for joints are mostly single-type, lacking redundant multi-stage locking designs. Once a single locking element fails, the joint loses its anti-slip capability, posing a safety hazard. Therefore, developing a beam-column connection structure that can achieve self-adaptive locking using the self-weight of beams and columns, possesses a multi-stage anti-slip locking mechanism, and is easy to install is of great significance for improving the connection reliability of prefabricated steel structure joints, enhancing structural seismic performance, and improving construction efficiency. Summary of the Invention
[0004] To achieve the above objectives, the present invention provides the following technical solution: a wedge-locked anti-slip connection structure for prefabricated steel structure beam-column joints, comprising a vertical steel pipe, a horizontal beam, and a channel-shaped steel beam fixed to the outer surface of the horizontal beam, wherein the end of the horizontal beam is fixed with a channel-shaped outer sleeve via the channel-shaped steel beam, and further comprising: A self-locking mechanism is used to position the grooved outer sleeve on the outer surface of the vertical steel pipe, and the self-locking mechanism is located in the inner cavity of the vertical steel pipe. An adjustment mechanism is provided inside the vertical steel pipe; The outer surface of the vertical steel pipe is provided with a locking groove, and the inner wall of the groove-shaped outer sleeve is fixed with a first locking plate. The self-locking mechanism includes a movable rod, which is located in the inner cavity of the vertical steel pipe. A pressing head is fixedly provided at the top of the movable rod. A pressing sleeve is fixedly provided on the side of the first locking plate away from the grooved outer sleeve. The pressing sleeve is pressed and adapted to the pressing head.
[0005] Preferably, the top of the outer surface of the first positioning plate is connected to the grooved outer sleeve, and there is a gap between the lower middle part of the outer surface of the first positioning plate and the grooved outer sleeve. When the grooved outer sleeve is in contact with the outer surface of the vertical steel pipe, the first positioning plate is in frictional fit with the inner wall of the vertical steel pipe.
[0006] Preferably, the self-locking mechanism further includes a fixing frame, which is fixed to the inner wall of the vertical steel pipe. A limiting tube is fixed to the inner wall of the fixing frame. The bottom end of the moving rod is slidably connected to the inner cavity of the limiting tube. A sliding block is fixed to one end of the moving rod located in the inner cavity of the limiting tube. A first spring is fixed to the lower surface of the sliding block. The bottom end of the first spring is fixed to the bottom surface of the inner cavity of the limiting tube.
[0007] Preferably, the inner wall of the limiting tube is provided with a plurality of annularly distributed strip grooves, and the outer surface of the sliding block is provided with a plurality of annularly distributed protrusions, which are slidably connected to the strip grooves.
[0008] Preferably, a wedge-shaped extrusion frame is fixedly provided in the middle of the outer surface of the moving rod, a square groove is provided on the outer surface of the vertical steel pipe, and a limiting frame is fixedly provided in the square groove on the outer surface of the vertical steel pipe. When the wedge-shaped extrusion frame is not subjected to extrusion force, the limiting frame is lower than the wedge-shaped extrusion frame. A limiting bracket is fixedly provided on one side of the inner wall of the vertical steel pipe, and an extrusion column is slidably connected in the inner cavity of the limiting bracket. The end of the extrusion column is extruded and adapted to the outer surface of the wedge-shaped extrusion frame.
[0009] Preferably, a positioning plate is fixedly mounted on the end of the extrusion column away from the wedge-shaped extrusion frame. A second spring is sleeved on the outer surface of the extrusion column, with one end of the second spring fixed to the outer surface of the limiting frame and the other end fixed to the outer surface of the positioning plate. The positioning plate is slidably connected to the inner cavity of the limiting frame. When the wedge-shaped extrusion frame moves downward and drives the extrusion column to move laterally, the surface of the positioning plate protrudes from the outer surface of the vertical steel pipe. A connecting plate is fixedly mounted on the outer surface of the grooved outer sleeve, and a hexagonal locking post is fixedly mounted on the surface of the connecting plate. A hexagonal hole is opened on the surface of the positioning plate, and the hexagonal hole on the surface of the positioning plate is matched with the hexagonal locking post.
[0010] Preferably, a limiting block is fixed on the side of the grooved outer sleeve away from the crossbeam, and a second positioning plate is slidably connected to the outer surface of the limiting block. There is a gap between the second positioning plate and the surface of the grooved outer sleeve, and the second positioning plate is frictionally adapted to the inner wall of the vertical steel pipe.
[0011] Preferably, the adjusting mechanism includes a limiting box, which is fixed to the inner wall of the vertical steel pipe. The adjusting mechanism is located directly above the extrusion head. The inner cavity of the limiting box is rotatably connected to a lead screw via a bearing. The outer surface of the lead screw is threaded with a ball screw. The outer surface of the ball screw is fixed with a sliding frame, which is slidably connected to the inner cavity of the vertical steel pipe.
[0012] Preferably, the surface of the second positioning plate is fixed with an internal threaded ring, and a steel wire rope is threadedly connected to the inner cavity of the internal threaded ring. The lower surface of the sliding frame is fixed with a guide tube, and the top of the extrusion head is fixed with a fixing post. The steel wire rope passes through the guide tube and is fixed at the top of the fixing post.
[0013] This invention provides a wedge-locking anti-slip connection structure for beam-column joints in prefabricated steel structures. It has the following advantages: I. The wedge-locking anti-slip connection structure of the beam-column joint in this prefabricated steel structure uses a channel-shaped steel beam as a transitional connector between the horizontal beam and the channel-shaped outer sleeve, tightly connecting the horizontal beam and the channel-shaped outer sleeve together. By using the channel-shaped outer sleeve as a load-bearing component of the connection structure, the load of the horizontal beam is transferred to the vertical steel pipe, which increases the area of the connection between the horizontal beam and the vertical steel pipe, thus making the connection between the horizontal beam and the vertical steel pipe more stable.
[0014] II. The wedge-locking anti-slip connection structure of the prefabricated steel structure beam-column joint, by setting a locking groove, allows the first locking plate on the inner wall of the grooved outer sleeve to be inserted into the inner cavity of the vertical steel pipe through the locking groove, thereby making the first locking plate tightly frictionally fit with the inner wall of the vertical steel pipe. By setting the first locking plate, there is a gap between the lower part of it and the grooved outer sleeve, so that the first locking plate can form a frictional self-locking with the inner wall of the vertical steel pipe, thereby making the first locking plate and the grooved outer sleeve tightly contact the outer surface and inner wall of the vertical steel pipe respectively, achieving the effect of tightly connecting the beam and the vertical steel pipe.
[0015] III. The wedge-locked anti-slip connection structure of the prefabricated steel structure beam-column joint utilizes a self-locking mechanism. This mechanism uses a wedge-shaped compression principle to drive the moving rod and compression head downwards, locking the grooved outer sleeve onto the outer surface of the vertical steel pipe, thus preventing slippage. The moving rod can move up and down within the vertical steel pipe's inner cavity. When the compression sleeve moves downwards, it drives the compression head and moving rod downwards, locking the self-locking mechanism. The self-locking effect is achieved using the weight of the crossbeam itself. The compression sleeve is fixed to the side of the first locking plate away from the grooved outer sleeve. When the crossbeam moves downwards, the compression head moves downwards as well.
[0016] IV. The wedge-lock anti-slip connection structure of the prefabricated steel structure beam-column joint utilizes a wedge-shaped compression frame. The wedge-shaped inclined surface of the frame engages with the end of the compression column. When the moving rod moves downwards, the wedge-shaped inclined surface of the compression frame pushes the compression column forward. A limiting frame provides sliding guidance and limitation for the positioning plate, preventing it from deviating from its predetermined position during movement. The compression column, slidably connected to the inner cavity of the limiting frame, has its end fitted with the wedge-shaped compression frame. Driven by the wedge-shaped compression frame, it moves laterally, pushing the positioning plate outwards from the outer surface of the vertical steel pipe. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the external structure of a wedge-locked anti-slip connection structure for prefabricated steel structure beam-column joints according to the present invention. Figure 2 This is a structural cross-sectional view of a wedge-locked anti-slip connection structure for prefabricated steel structure beam-column joints according to the present invention. Figure 3 This is a schematic diagram of the vertical steel pipe and horizontal beam structure of the present invention; Figure 4 This is a schematic diagram of the grooved outer sleeve structure of the present invention; Figure 5 This is a partial structural diagram of the grooved outer sleeve of the present invention; Figure 6 This is a schematic diagram of the self-locking mechanism of the present invention; Figure 7 This is a schematic cross-sectional view of the self-locking mechanism of the present invention; Figure 8 This is a schematic diagram of the wedge-shaped extrusion frame structure of the present invention; Figure 9 This is a schematic diagram of the adjustment mechanism of the present invention.
[0018] In the diagram: 1. Vertical steel pipe; 2. Horizontal beam; 3. Channel steel beam; 4. Channel outer sleeve; 5. Positioning groove; 6. Square groove; 7. Self-locking mechanism; 71. Fixed frame; 72. Limiting tube; 73. Sliding block; 74. First spring; 75. Moving rod; 76. Wedge-shaped extrusion frame; 77. Extrusion head; 78. Fixed column; 79. Limiting frame; 710. Limiting frame; 711. Extrusion column; 712. Second spring; 713. Positioning plate; 8. Adjustment mechanism; 81. Limiting box; 82. Lead screw; 83. Sliding frame; 84. Ball screw; 85. Guide tube; 9. First positioning plate; 10. Extrusion sleeve; 11. Limiting block; 12. Second positioning plate; 13. Internal threaded ring; 14. Steel wire rope; 15. Connecting plate; 16. Hexagonal positioning column. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.
[0020] like Figures 1-8 As shown, the present invention provides a technical solution: a wedge-locked anti-slip connection structure for prefabricated steel structure beam-column joints, including a vertical steel pipe 1, a horizontal beam 2, and a channel-shaped steel beam 3 fixed to the outer surface of the horizontal beam 2. A channel-shaped outer sleeve 4 is fixed to the end of the horizontal beam 2 via the channel-shaped steel beam 3. By setting the channel-shaped steel beam 3 as a transitional connector between the horizontal beam 2 and the channel-shaped outer sleeve 4, the horizontal beam 2 and the channel-shaped outer sleeve 4 are tightly connected together. By setting the channel-shaped outer sleeve 4 as a load-bearing component of the connection structure, the load of the horizontal beam 2 is transferred to the vertical steel pipe 1, which increases the area of the connection between the horizontal beam 2 and the vertical steel pipe 1, thereby making the connection between the horizontal beam 2 and the vertical steel pipe 1 more stable. The invention also includes: A locking groove 5 is provided on the outer surface of the vertical steel pipe 1, and a first locking plate 9 is fixed on the inner wall of the grooved outer sleeve 4. By providing the locking groove 5, the first locking plate 9 on the inner wall of the grooved outer sleeve 4 can be inserted into the inner cavity of the vertical steel pipe 1 through the locking groove 5, thereby making the first locking plate 9 tightly rub against the inner wall of the vertical steel pipe 1. By providing the first locking plate 9, there is a gap between its lower part and the grooved outer sleeve 4, so that the first locking plate 9 can form a friction self-locking with the inner wall of the vertical steel pipe 1, thereby making the first locking plate 9 and the grooved outer sleeve 4 tightly contact the outer surface and inner wall of the vertical steel pipe 1 respectively, achieving the effect of tightly connecting the crossbeam 2 and the vertical steel pipe 1; The top of the outer surface of the first positioning plate 9 is connected to the grooved outer sleeve 4. There is a gap between the lower middle part of the outer surface of the first positioning plate 9 and the grooved outer sleeve 4. When the grooved outer sleeve 4 is in contact with the outer surface of the vertical steel pipe 1, the first positioning plate 9 is rubbed against the inner wall of the vertical steel pipe 1. By leaving a gap between the lower middle part and the grooved outer sleeve 4, when the first positioning plate 9 is inserted into the inner cavity of the vertical steel pipe 1 through the positioning groove 5, the first positioning plate 9 and the grooved outer sleeve 4 are locked together with the vertical steel pipe 1, thereby preventing the grooved outer sleeve 4 from detaching from the outer surface of the vertical steel pipe 1.
[0021] The wedge-locked anti-slip connection structure of the prefabricated steel structure beam-column joint also includes a self-locking mechanism 7. This self-locking mechanism 7 is used to position the grooved outer sleeve 4 on the outer surface of the vertical steel pipe 1. The self-locking mechanism 7 is located within the inner cavity of the vertical steel pipe 1. The self-locking mechanism 7 includes a moving rod 75, which is located within the inner cavity of the vertical steel pipe 1. A pressing head 77 is fixedly attached to the top of the moving rod 75. A pressing sleeve 10 is fixedly attached to the side of the first locking plate 9 away from the grooved outer sleeve 4. The pressing sleeve 10 is pressed and fitted against the pressing head 77. By setting the self-locking mechanism 7, the moving rod 75 and the pressing head 77 are driven downwards using the wedge-shaped pressing principle, locking the grooved outer sleeve 4 on the outer surface of the vertical steel pipe 1, thus preventing slippage. By setting the movable rod 75, it can move up and down within the inner cavity of the vertical steel pipe 1. When the extrusion sleeve 10 moves downwards, it drives the extrusion head 77 and the movable rod 75 downwards, thus locking the self-locking mechanism 7. This achieves a self-locking effect using the weight of the crossbeam 2. The extrusion sleeve 10 is fixed to the side of the first locking plate 9 away from the grooved outer sleeve 4. When the crossbeam 2 moves downwards, the extrusion head 77 moves downwards as well.
[0022] The self-locking mechanism 7 also includes a fixing frame 71, which is fixed to the inner wall of the vertical steel pipe 1. A limiting tube 72 is fixed to the inner wall of the fixing frame 71. The bottom end of the moving rod 75 is slidably connected to the inner cavity of the limiting tube 72. A sliding block 73 is fixed to one end of the moving rod 75 located in the inner cavity of the limiting tube 72. A first spring 74 is fixed to the lower surface of the sliding block 73, and the bottom end of the first spring 74 is fixed to the bottom surface of the inner cavity of the limiting tube 72. By setting the limiting tube 72, a vertical sliding guide is provided for the moving rod 75, ensuring that the moving rod 75 moves stably in the vertical direction. By setting the sliding block 73, which is slidably connected to the inner cavity of the limiting tube 72, the protrusion on its outer surface cooperates with the strip groove on the inner wall of the limiting tube 72, so that the moving rod 75 only moves in the vertical direction, preventing the moving rod 75 from rotating. By setting the first spring 74, an upward elastic thrust is provided to the moving rod 75, so that the extrusion head 77 always remains in the upper position when it is not subjected to downward extrusion force.
[0023] The inner wall of the limiting tube 72 has several annularly distributed grooves, and the outer surface of the sliding block 73 has several annularly distributed raised strips that are slidably connected to the grooves. By providing the grooves on the inner wall of the limiting tube 72 and the raised strips on the outer surface of the sliding block 73 for sliding engagement, precise guidance is provided for the lifting and lowering movement of the moving rod 75, preventing the moving rod 75 from rotating during the lifting and lowering process, and ensuring the precise alignment of the extrusion head 77 and the extrusion sleeve 10.
[0024] A wedge-shaped extrusion frame 76 is fixedly mounted on the middle of the outer surface of the moving rod 75. A square groove 6 is formed on the outer surface of the vertical steel pipe 1, and a limiting frame 79 is fixedly mounted at the square groove 6 on the outer surface of the vertical steel pipe 1. When the wedge-shaped extrusion frame 76 is not subjected to extrusion force, the limiting frame 79 is lower than the wedge-shaped extrusion frame 76. A limiting bracket 710 is fixedly mounted on one side of the limiting frame 79 located on the inner wall of the vertical steel pipe 1. An extrusion column 711 is slidably connected to the inner cavity of the limiting bracket 710. The end of the extrusion column 711 is extruded and adapted to the outer surface of the wedge-shaped extrusion frame 76. By setting the wedge-shaped extrusion frame 76, its wedge-shaped inclined surface cooperates with the end of the extrusion column 711. When the moving rod 75 moves downward, the wedge-shaped inclined surface of the wedge-shaped extrusion frame 76 pushes the extrusion column 711 to move. By setting the limiting frame 79, a sliding guide and limit are provided for the positioning plate 713, preventing the positioning plate 713 from deviating from the predetermined position when it moves. By setting the extrusion column 711, which is slidably connected to the inner cavity of the limit frame 710, and whose end is extruded and adapted to the wedge extrusion frame 76, it moves laterally under the drive of the wedge extrusion frame 76, pushing the positioning plate 713 out of the outer surface of the vertical steel pipe 1.
[0025] A positioning plate 713 is fixedly mounted on the end of the extrusion column 711 away from the wedge-shaped extrusion frame 76. A second spring 712 is sleeved on the outer surface of the extrusion column 711. One end of the second spring 712 is fixed on the outer surface of the limiting frame 710, and the other end is fixed on the outer surface of the positioning plate 713. The positioning plate 713 is slidably connected to the inner cavity of the limiting frame 79. When the wedge-shaped extrusion frame 76 moves downward and drives the extrusion column 711 to move laterally, the surface of the positioning plate 713 protrudes from the outer surface of the vertical steel pipe 1. A connecting plate 15 is fixedly mounted on the outer surface of the grooved outer sleeve 4. A hexagonal locking post 16 is fixedly mounted on the surface of the connecting plate 15. A hexagonal hole is opened on the surface of the positioning plate 713, and the hexagonal hole on the surface of the positioning plate 713 is matched with the hexagonal locking post 16. By setting the positioning plate 713, it protrudes from the outer surface of the vertical steel pipe 1 under the push of the extrusion column 711 and engages with the hexagonal locking post 16 on the grooved outer sleeve 4 to achieve anti-slip locking. By setting a second spring 712, a reset force is provided for the positioning plate 713. When the wedge-shaped extrusion frame 76 moves upward, it pushes the positioning plate 713 back into the inner cavity of the vertical steel pipe 1, thereby unlocking. By setting a hexagonal locking post 16, which engages with the hexagonal hole on the surface of the positioning plate 713, when the positioning plate 713 extends, the hexagonal locking post 16 inserts into the hexagonal hole, forming a mechanical anti-slip locking, preventing the grooved outer sleeve 4 from slipping or rotating on the outer surface of the vertical steel pipe 1.
[0026] A limiting block 11 is fixedly installed on the side of the trough-shaped outer sleeve 4 away from the crossbeam 2. A second locking plate 12 is slidably connected to the outer surface of the limiting block 11. There is a gap between the second locking plate 12 and the surface of the trough-shaped outer sleeve 4, and the second locking plate 12 is frictionally adapted to the inner wall of the vertical steel pipe 1. By setting the limiting block 11, a sliding guide is provided for the second locking plate 12, so that the second locking plate 12 moves vertically up and down on the surface of the trough-shaped outer sleeve 4 under the guidance of the limiting block 11. By setting the second locking plate 12 and the gap between it and the surface of the trough-shaped outer sleeve 4, after the second locking plate 12 is inserted into the inner cavity of the vertical steel pipe 1 through the locking groove 5, and after being pulled upward, it is frictionally adapted to the inner wall of the vertical steel pipe 1, providing auxiliary friction force and enhancing the anti-slip ability.
[0027] like Figure 9 As shown, the wedge-locking anti-slip connection structure of the prefabricated steel structure beam-column joint also includes an adjustment mechanism 8, which is set in the inner cavity of the vertical steel pipe 1. The adjusting mechanism 8 includes a limiting box 81, which is fixed to the inner wall of the vertical steel pipe 1. The adjusting mechanism 8 is located directly above the extrusion head 77. A lead screw 82 is rotatably connected to the inner cavity of the limiting box 81 via bearings. A ball screw 84 is threadedly connected to the outer surface of the lead screw 82. A sliding frame 83 is fixed to the outer surface of the ball screw 84 and slidably connected to the inner cavity of the vertical steel pipe 1. By setting the limiting box 81, the lead screw 82 can be controlled to rotate stably within the inner cavity of the limiting box 81. The lead screw 82 has a hexagonal hole at its top, allowing it to be rotated using a hexagonal wrench during operation, converting the rotational motion into linear motion of the ball screw 84. The ball screw 84 is threadedly connected to the outer surface of the lead screw 82 and rises and falls with the rotation of the lead screw 82, causing the sliding frame 83 to move synchronously, thereby adjusting the position of the sliding frame 83 within the inner cavity of the vertical steel pipe 1.
[0028] The surface of the second locking plate 12 is fixed with an internal threaded ring 13, and a steel wire rope 14 is threadedly connected to the inner cavity of the internal threaded ring 13. A guide tube 85 is fixed to the lower surface of the sliding frame 83, and a fixing post 78 is fixed to the top of the extrusion head 77. The steel wire rope 14 passes through the guide tube 85 and is fixed to the top of the fixing post 78. By setting the sliding frame 83, a lifting and lowering effect can be generated under the drive of the ball screw 84. The steel wire rope 14 pulls the second locking plate 12 upward, realizing the locking and locking operation of the second locking plate 12. By setting the internal threaded ring 13 and threadedly connecting it with the steel wire rope 14, the steel wire rope 14 can be locked together with the second locking plate 12 when the crossbeam 2 is installed. At the same time, the tension of the steel wire rope 14 can be evenly transmitted to the second locking plate 12, pulling the second locking plate 12 upward and making frictional contact with the inner wall of the vertical steel pipe 1. By setting a guide tube 85, a guide channel is provided for the wire rope 14, ensuring that the wire rope 14 pulls the second locking plate 12 in a straight direction. By setting a fixing column 78, the wire rope 14 is connected to the second locking plate 12. The lifting and lowering movement of the extrusion head 77 is transmitted to the second locking plate 12 through the fixing column 78 and the wire rope 14, controlling the locking operation of the second locking plate 12.
[0029] Working principle: During installation, the grooved outer sleeve 4 is fitted onto the outer surface of the vertical steel pipe 1, aligning the first locking plate 9 and the second locking plate 12 with the locking groove 5. Then, the grooved outer sleeve 4 is slid downwards, and the first locking plate 9 and the second locking plate 12 slide into the inner cavity of the vertical steel pipe 1 along the locking groove 5. When the grooved outer sleeve 4 slides to the predetermined position, the lower middle part of the first locking plate 9 contacts the inner wall of the vertical steel pipe 1, and the second locking plate 12 enters the inner cavity of the vertical steel pipe 1. At this time, the weight of the crossbeam 2 and the grooved outer sleeve 4 is transmitted to the extrusion sleeve 10 through the first locking plate 9. The extrusion sleeve 10 extrudes the extrusion head 77 downwards, pushing the moving rod 75 to move downwards against the elastic force of the first spring 74. The first locking plate 9 is tightly fitted with the inner wall of the vertical steel pipe 1, achieving the first friction self-locking.
[0030] As the moving rod 75 moves downward, the wedge-shaped extrusion frame 76 moves downward accordingly, and its wedge-shaped inclined surface pushes the extrusion column 711 to move laterally towards the outer surface of the vertical steel pipe 1. The extrusion column 711 pushes the positioning plate 713 to overcome the elastic force of the second spring 712 and extend it out of the outer surface of the vertical steel pipe 1. The hexagonal hole on the surface of the positioning plate 713 engages with the hexagonal locking post 16 on the connecting plate 15 on the outer surface of the slotted outer sleeve 4. The hexagonal locking post 16 is inserted into the hexagonal hole to form a mechanical anti-slip locking, preventing the slotted outer sleeve 4 from slipping or rotating on the outer surface of the vertical steel pipe 1, thus achieving a second locking.
[0031] As the grooved outer sleeve 4 slides downward, the second locking plate 12 inserts into the inner cavity of the vertical steel pipe 1 through the locking groove 5. When further enhancement of the locking effect is required, the lead screw 82 is rotated by a hex wrench. The rotation of the lead screw 82 drives the ball screw 84 and the sliding frame 83 to move upward, thereby straightening the originally loose steel wire rope 14. As the extrusion head 77 moves downward, the tension of the steel wire rope 14 is transmitted to the second locking plate 12, causing the second locking plate 12 to slide upward along the limiting block 11. Its outer surface tightly rubs against the inner wall of the vertical steel pipe 1, providing auxiliary friction force, enhancing anti-slip capability, and achieving a third layer of friction-assisted locking.
[0032] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A wedge-locked anti-slip connection structure for prefabricated steel structure beam-column joints, comprising a vertical steel pipe (1), a horizontal beam (2), and a channel-shaped steel beam (3) fixed to the outer surface of the horizontal beam (2), wherein the end of the horizontal beam (2) is fixed with a channel-shaped outer sleeve (4) through the channel-shaped steel beam (3), characterized in that, Also includes: Self-locking mechanism (7), which is used to position the grooved outer sleeve (4) on the outer surface of the vertical steel pipe (1), wherein the self-locking mechanism (7) is provided in the inner cavity of the vertical steel pipe (1); Adjustment mechanism (8), the adjustment mechanism (8) is set in the inner cavity of the vertical steel pipe (1); The outer surface of the vertical steel pipe (1) is provided with a positioning groove (5), and the inner wall of the groove-shaped outer sleeve (4) is fixed with a first positioning plate (9). The self-locking mechanism (7) includes a moving rod (75) which is located in the inner cavity of the vertical steel pipe (1). A pressing head (77) is fixedly provided at the top of the moving rod (75). A pressing sleeve (10) is fixedly provided on the side of the first positioning plate (9) away from the grooved outer sleeve (4). The pressing sleeve (10) is pressed and adapted to the pressing head (77).
2. The wedge-locking anti-slip connection structure for prefabricated steel structure beam-column joints according to claim 1, characterized in that: The top of the outer surface of the first positioning plate (9) is connected to the grooved outer sleeve (4). There is a gap between the middle and lower part of the outer surface of the first positioning plate (9) and the grooved outer sleeve (4). When the grooved outer sleeve (4) is in contact with the outer surface of the vertical steel pipe (1), the first positioning plate (9) is in frictional fit with the inner wall of the vertical steel pipe (1).
3. The wedge-locking anti-slip connection structure for prefabricated steel structure beam-column joints according to claim 1, characterized in that: The self-locking mechanism (7) also includes a fixed frame (71), which is fixed to the inner wall of the vertical steel pipe (1). A limiting tube (72) is fixed to the inner wall of the fixed frame (71). The bottom end of the moving rod (75) is slidably connected to the inner cavity of the limiting tube (72). A sliding block (73) is fixed to one end of the moving rod (75) located in the inner cavity of the limiting tube (72). A first spring (74) is fixed to the lower surface of the sliding block (73). The bottom end of the first spring (74) is fixed to the bottom surface of the inner cavity of the limiting tube (72).
4. The wedge-locking anti-slip connection structure for prefabricated steel structure beam-column joints according to claim 3, characterized in that: The inner wall of the limiting tube (72) is provided with several annularly distributed strip grooves, and the outer surface of the sliding block (73) is provided with several annularly distributed protrusions, which are slidably connected to the strip grooves.
5. The wedge-locking anti-slip connection structure for prefabricated steel structure beam-column joints according to claim 1, characterized in that: A wedge-shaped extrusion frame (76) is fixedly provided in the middle of the outer surface of the moving rod (75). A square groove (6) is provided on the outer surface of the vertical steel pipe (1). A limiting frame (79) is fixedly provided at the square groove (6) on the outer surface of the vertical steel pipe (1). When the wedge-shaped extrusion frame (76) is not subjected to extrusion force, the limiting frame (79) is lower than the wedge-shaped extrusion frame (76). A limiting bracket (710) is fixedly provided on one side of the inner wall of the vertical steel pipe (1) of the limiting frame (79). An extrusion column (711) is slidably connected in the inner cavity of the limiting bracket (710). The end of the extrusion column (711) is extruded and adapted to the outer surface of the wedge-shaped extrusion frame (76).
6. The wedge-locking anti-slip connection structure for prefabricated steel structure beam-column joints according to claim 5, characterized in that: A positioning plate (713) is fixedly provided at one end of the extrusion column (711) away from the wedge-shaped extrusion frame (76). A second spring (712) is sleeved on the outer surface of the extrusion column (711). One end of the second spring (712) is fixed on the outer surface of the limiting frame (710), and the other end of the second spring (712) is fixed on the outer surface of the positioning plate (713). The positioning plate (713) is slidably connected to the inner cavity of the limiting frame (79).
7. The wedge-locking anti-slip connection structure for prefabricated steel structure beam-column joints according to claim 6, characterized in that: When the wedge-shaped extrusion frame (76) moves downward and drives the extrusion column (711) to move laterally, the surface of the positioning plate (713) protrudes from the outer surface of the vertical steel pipe (1), the outer surface of the groove-shaped outer sleeve (4) is fixed with a connecting plate (15), the surface of the connecting plate (15) is fixed with a hexagonal locking column (16), the surface of the positioning plate (713) is provided with a hexagonal hole, and the hexagonal hole on the surface of the positioning plate (713) is matched with the hexagonal locking column (16).
8. The wedge-locking anti-slip connection structure for prefabricated steel structure beam-column joints according to claim 1, characterized in that: A limiting block (11) is fixed on the side of the grooved outer sleeve (4) away from the crossbeam (2). A second positioning plate (12) is slidably connected to the outer surface of the limiting block (11). There is a gap between the second positioning plate (12) and the surface of the grooved outer sleeve (4). The second positioning plate (12) is rubbed against the inner wall of the vertical steel pipe (1).
9. The wedge-locking anti-slip connection structure for prefabricated steel structure beam-column joints according to claim 8, characterized in that: The adjustment mechanism (8) includes a limiting box (81), which is fixed on the inner wall of the vertical steel pipe (1). The adjustment mechanism (8) is located directly above the extrusion head (77). The inner cavity of the limiting box (81) is rotatably connected to a lead screw (82) via a bearing. The outer surface of the lead screw (82) is threaded with a ball screw (84). The outer surface of the ball screw (84) is fixed with a sliding frame (83), which is slidably connected to the inner cavity of the vertical steel pipe (1).
10. The wedge-locking anti-slip connection structure for prefabricated steel structure beam-column joints according to claim 9, characterized in that: The surface of the second positioning plate (12) is fixed with an internal thread ring (13), and a steel wire rope (14) is threadedly connected to the inner cavity of the internal thread ring (13). The lower surface of the sliding frame (83) is fixed with a guide tube (85), and the top end of the extrusion head (77) is fixed with a fixing post (78). The steel wire rope (14) passes through the guide tube (85) and is fixed at the top end of the fixing post (78).