Quick assembly locking connection node for modular steel structure building and installation method

Abstract

The application relates to the technical field of steel structure building assembly, and discloses a quick assembly type locking connecting joint for modular steel structure buildings and a mounting method, which comprises a plurality of square steel pipe columns, a connecting assembly is arranged in the upper square steel pipe column, the connecting assembly comprises a torsional spring and a bearing arranged in the upper square steel pipe column, a rotating locking piece is arranged outside the bearing, a protruding block is fixedly connected to the top of the lower square steel pipe column, a connecting groove is formed in the side wall of the protruding block, the connecting groove is matched with the rotating locking piece, a connecting plate is arranged between two adjacent square steel pipe columns, and a reinforcing assembly is arranged on the side wall of the plurality of transversely-adjacent square steel pipe columns. The application solves the problems that the existing steel structure module relies on manual bolt fastening during assembly, the on-site assembly efficiency is low, the adjacent components lack a quick automatic locking structure, dislocation is prone to occurring after stress, and the sealing and waterproof performance of the connecting joint assembly gap is poor.

Description

Technical Field

[0001] This invention relates to the field of steel structure building assembly technology, specifically to a quick-assembly locking connection node and installation method for modular steel structure buildings. Background Technology

[0002] Modular steel structure buildings typically require the prefabrication of individual structural modules in a factory, followed by transportation to the construction site for assembly and connection. Node connections are a crucial aspect of the modular steel structure assembly process. Traditional steel structure node connections often rely on numerous high-strength bolts or on-site welding for fixation. On-site welding is susceptible to weather conditions, involves a large amount of on-site work, and the stress generated during welding can easily affect the overall stability of the structure.

[0003] Currently, most prefabricated module assemblies use bolt connections. However, in practice, after the modules are aligned, construction workers must manually align the holes and tighten the bolts one by one. In some confined spaces, bolt tightening is extremely inconvenient, leading to prolonged on-site assembly time and low assembly efficiency. Furthermore, existing steel structure modules often lack automatic guidance and rapid locking mechanisms for vertical and horizontal splicing, easily resulting in assembly gaps between adjacent components. This not only reduces the tensile and shear strength of the joints, making the assembled structure prone to misalignment under stress, but also allows external moisture to seep into the joints, affecting the sealing and corrosion resistance of the connections. Therefore, this invention proposes a rapid-assembly locking connection node and installation method for modular steel structure buildings to address the shortcomings of existing technologies. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a rapid assembly locking connection node and installation method for modular steel structure buildings. It solves the problems of low on-site assembly efficiency due to reliance on manual bolt tightening during the assembly of existing steel structure modules, easy misalignment under stress due to the lack of a rapid automatic locking structure between adjacent components, and poor sealing and waterproofing performance of the splicing gaps of the connection nodes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The first aspect of the present invention provides a quick-assembly locking connection node for modular steel structure buildings, comprising: multiple square steel tube columns, a connecting assembly disposed inside the upper square steel tube column, the connecting assembly including a torsion spring and a bearing disposed inside the upper square steel tube column, a rotation locking member disposed outside the bearing, a protrusion fixedly connected to the top of the lower square steel tube column, a connecting groove provided on the side wall of the protrusion, the connecting groove matching the rotation locking member, a connecting plate disposed between two adjacent upper and lower square steel tube columns, and a reinforcing assembly disposed on the side wall of multiple adjacent horizontal square steel tube columns.

[0006] Preferably, a flexible gasket is provided on the top surface of the connecting plate, and a first through groove is formed through the surface of the connecting plate and the flexible gasket, with the protrusion passing through the first through groove. By providing the flexible gasket, dimensional tolerances generated during the splicing of upper and lower steel pipe columns can be effectively absorbed, rigid collisions between components can be eliminated, and the sealing and waterproofing performance of the joint connection can be improved.

[0007] Preferably, the bottom of the upper square steel tube column is provided with a second through groove, and the protrusion passes through the second through groove and extends into the interior of the upper square steel tube column. The second through groove allows the lower protrusion to accurately enter the interior of the upper square steel tube column, providing a spatial basis for the automatic locking and engagement of the internal connecting components.

[0008] Preferably, the reinforcement component includes a reinforcement plate disposed on the side of the square steel tube column, the reinforcement plate having slots at both ends, and an installation cavity being formed inside the side wall of the square steel tube column. The structural cooperation of the reinforcement plate and the slots can provide external physical constraint on the laterally adjacent square steel tube columns, thereby improving the lateral stiffness of the overall frame after splicing.

[0009] Preferably, the mounting cavity contains a slider and a connecting rod. The slider is fixedly connected to one end of the connecting rod, and a spring is sleeved on the outside of the connecting rod. The end of the connecting rod away from the slider extends out of the mounting cavity and to the outside of the square steel tube column. The spring force provides the automatic rebound force of the connecting assembly, which, together with the guiding effect of the slider, ensures the stability of the connecting rod during lateral movement and the reliability of its reset.

[0010] Preferably, a locking block is fixedly connected to one end of the connecting rod extending to the outside of the square steel tube column. The reinforcing plate is sleeved on the outside of the connecting rod through the locking groove, and the locking block is attached to the outer surface of the reinforcing plate. The locking block can firmly press the reinforcing plate after the connecting rod is reset under the action of the spring, preventing the reinforcing plate from falling off and ensuring the effective maintenance of the lateral tension state.

[0011] Preferably, the side of the locking block near the side wall of the square steel tube column has an inclined structure, and a limiting post is provided on the side of the locking block near the side wall of the square steel tube column. One end of the limiting post passes through the reinforcing plate and the side wall of the square steel tube column in sequence. The inclined structure allows the locking block to move outward when the reinforcing plate is pressed directly, without the need for additional tools; the insertion of the limiting post provides additional shear reinforcement and further eliminates the splicing gap between adjacent modules.

[0012] Preferably, the torsion spring is sleeved outside the bearing, with one end fixedly connected to the side wall of the rotary locking member and the other end fixedly connected to the inner wall of the square steel tube column above. The torsion spring provides continuous reset torque for the rotary locking member. When the protrusion is fully inserted and no longer obstructed, the rotary locking member can automatically rebound using the torque to complete the deadlock and prevent disengagement.

[0013] Preferably, the rotating locking member and the protrusion connection portion have an arc-shaped structure, the protrusion has a trapezoidal shape, and the flexible gasket is made of one or more materials selected from rubber, silicone, and polyurethane. The trapezoidal protrusion, combined with the arc-shaped contact surface, can effectively reduce the frictional resistance when the upper and lower modules are inserted, providing good physical guidance and making the insertion process smoother.

[0014] The second aspect of this invention provides an installation method for a quick-assembly locking connection node for modular steel structure buildings, applicable to the quick-assembly locking connection node for modular steel structure buildings as described in the first aspect of this invention, comprising the following steps: Multiple lower square steel pipe columns are brought together and spliced. A connecting plate is placed on top of the lower square steel pipe column, so that the protrusions on the top of the lower square steel pipe column pass through the first through groove opened on the surface of the connecting plate, and the surface of the protrusions passes through the flexible gasket on the top surface of the connecting plate. Align the upper square steel column with the lower square steel column and move it downwards, so that the protrusion passes through the second through groove at the bottom of the upper square steel column and extends into the interior of the upper square steel column. The protrusion moves upward to contact the rotating locking member inside the square steel column above. The protrusion squeezes the rotating locking member, and the rotating locking member causes the torsion spring to deform and rotate along the bearing. As the protrusion enters the square steel column above, the torsion spring returns to its original position, and one end of the rotating locking member is inserted into the connecting groove opened on the side wall of the protrusion. Align the reinforcing plate with the locking blocks on the outer sides of the two laterally adjacent square steel pipe columns, and press the reinforcing plate against the inclined surface of the locking blocks. The locking blocks and connecting rods move outward, and the connecting rods press against the spring inside the mounting cavity. The reinforcing plate continues to press, causing the outer wall of the connecting rod to enter the locking grooves at both ends of the reinforcing plate. The springs return to their original position, and the locking blocks adhere to the outer surface of the reinforcing plate. The limiting posts on the side of the locking blocks pass through the reinforcing plate and the side wall of the square steel pipe column in sequence and enter the interior of the square steel pipe column.

[0015] This invention provides a rapid assembly locking connection node and installation method for modular steel structure buildings. It offers the following advantages: 1. This invention features a torsion spring, bearing, and rotating locking element inside the upper square steel column, and a protrusion with a connecting groove on the top of the lower square steel column. When the upper square steel column is placed downwards, the protrusion presses against the rotating locking element and causes the torsion spring to deform. After the upper square steel column is in place, the torsion spring releases its torque, causing the rotating locking element to engage with the connecting groove on the side wall of the protrusion. This structure achieves automatic locking between adjacent upper and lower square steel columns, reduces the manual tightening of bolts during splicing, and improves the efficiency of node assembly.

[0016] 2. This invention provides a reinforcing component on the side of the square steel pipe column. The spring inside the side wall of the square steel pipe column drives the connecting rod and the locking block to reset, so that the locking block is close to the outer surface of the reinforcing plate. At the same time, the limiting post on the side of the locking block passes through the limiting hole on the side wall of the reinforcing plate and the square steel pipe column. This connection method fixes the horizontally adjacent square steel pipe columns together, increases the shear resistance of the horizontal splicing part, and prevents the horizontally adjacent square steel pipe columns from being misaligned under force.

[0017] 3. This invention involves setting a connecting plate between adjacent square steel pipe columns and laying a flexible gasket on the top surface of the connecting plate. This allows the protrusion at the top of the lower square steel pipe column to pass through the flexible gasket. When the upper square steel pipe column falls, it will exert gravity pressure on the flexible gasket. After being compressed, the flexible gasket undergoes elastic deformation, filling the tiny gaps between the metal contact surfaces of the upper and lower adjacent square steel pipe columns, buffering the hard impact, and improving the sealing performance of the assembly node. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional exploded view of the present invention; Figure 3 This is a partial structural diagram of the reinforcement component of the present invention; Figure 4 This is a partial explosion diagram of the reinforcement component of the present invention; Figure 5 This is a schematic diagram of the internal structure of the square steel pipe column of the present invention; Figure 6 This is a partial structural diagram of the connection component of the present invention; Figure 7 This is a schematic diagram of the overall assembly structure of the present invention.

[0019] The components include: 1. Square steel pipe column; 2. Connecting assembly; 3. Reinforcing assembly; 4. Torsion spring; 5. Bearing; 6. Rotary locking component; 7. Protrusion; 8. Connecting groove; 9. Connecting plate; 10. Flexible gasket; 11. First through groove; 12. Second through groove; 13. Reinforcing plate; 14. Slot; 15. Mounting cavity; 16. Slider; 17. Connecting rod; 18. Spring; 19. Locking block; 20. Limiting post. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1 , Figure 5 , Figure 6 and Figure 7 This invention provides a quick-assembly locking connection node for modular steel structure buildings, comprising: multiple square steel tube columns 1, with a connecting component 2 installed inside the upper square steel tube column 1. The connecting component 2 includes a torsion spring 4 and a bearing 5 installed inside the upper square steel tube column 1, and a rotating locking component 6 installed outside the bearing 5. A protrusion 7 is fixedly connected to the top of the lower square steel tube column 1, and a connecting groove 8 is opened on the side wall of the protrusion 7. The connecting groove 8 matches the rotating locking component 6. A connecting plate 9 is installed between two adjacent square steel tube columns 1. Reinforcing components 3 are installed on the side walls of multiple adjacent square steel tube columns 1 laterally.

[0022] Specifically, during the assembly operation, when the upper square steel column 1 is aligned with the lower square steel column 1 and placed downwards, the protrusion 7 on the top of the lower square steel column 1 will enter the interior of the upper square steel column 1. As the protrusion 7 moves upwards, it contacts and presses against the rotating locking member 6 inside the upper square steel column 1, causing the rotating locking member 6 to rotate along the bearing 5. The bearing 5 is fixedly connected to the inner side wall of the upper square steel column 1, simultaneously causing the torsion spring 4 to deform. When the upper square steel column 1 has completely fallen, the protrusion 7... The connecting groove 8 in the wall is aligned with the position of the rotating locking piece 6. The torsion spring 4 is reset, which drives the rotating locking piece 6 to rebound and lock into the connecting groove 8, realizing the locking fit between the upper and lower square steel pipe columns 1. The connecting plate 9 set between the two adjacent square steel pipe columns 1 is used to limit the relative position of multiple lower square steel pipe columns 1 during assembly. The reinforcing components 3 set on the side walls of multiple horizontally adjacent square steel pipe columns 1 externally pull and fix the adjacent square steel pipe columns 1 together, improving the stability of the overall assembly structure.

[0023] Please see Figure 2 A flexible gasket 10 is provided on the top surface of the connecting plate 9, and a first through groove 11 is provided through the surface of the connecting plate 9 and the flexible gasket 10, and the protrusion 7 passes through the first through groove 11.

[0024] Specifically, during the assembly of multiple square steel pipe columns 1, the connecting plate 9 covers the top of the multiple lower square steel pipe columns 1. The protrusion 7 on the top of the lower square steel pipe column 1 penetrates the first through groove 11 opened on the surface of the connecting plate 9 and the flexible gasket 10. The inner wall contour of the first through groove 11 fits with the outer wall of the protrusion 7, limiting the position of the protrusion 7. When the upper square steel pipe column 1 falls, the flexible gasket 10 is located between the connecting plate 9 and the bottom of the upper square steel pipe column 1. The flexible gasket 10 absorbs the dimensional errors of the square steel pipe column 1 during the manufacturing and assembly process, and buffers the hard collision generated when two adjacent square steel pipe columns 1 come into contact. After being squeezed by the self-weight of the upper square steel pipe column 1, the flexible gasket 10 improves the sealing performance of the joint position of two adjacent square steel pipe columns 1.

[0025] Please see Figure 1 , Figure 2 , Figure 5 and Figure 6 The bottom of the upper square steel column 1 is provided with a second through groove 12, and the protrusion 7 passes through the second through groove 12 and extends into the interior of the upper square steel column 1.

[0026] Specifically, when the upper square steel column 1 moves downward and connects with the lower square steel column 1, the protrusion 7 at the top of the lower square steel column 1 passes through the first through groove 11 and continues through the second through groove 12 at the bottom of the upper square steel column 1. The size of the second through groove 12 matches the size of the bottom of the protrusion 7 to prevent the upper square steel column 1 from shaking. The protrusion 7 enters the interior of the upper square steel column 1 through the second through groove 12, so that the protrusion 7 can contact the connecting component 2 inside the upper square steel column 1. The setting of the second through groove 12 facilitates the connection between the lower square steel column 1 and the upper square steel column 1.

[0027] Please see Figure 3 The reinforcement component 3 includes a reinforcement plate 13 disposed on the side of the square steel column 1, with slots 14 at both ends of the reinforcement plate 13 and an installation cavity 15 inside the side wall of the square steel column 1.

[0028] Specifically, when splicing multiple square steel pipe columns 1 horizontally, the reinforcing plate 13 is placed outside the splicing point of the side walls of two horizontally adjacent square steel pipe columns 1. The reinforcing plate 13 spans the horizontally adjacent square steel pipe columns 1, and the slots 14 opened at both ends of the reinforcing plate 13 are respectively aligned with the positions of the sides of the two adjacent square steel pipe columns 1. The mounting cavity 15 opened inside the side wall of the square steel pipe column 1 provides a space for the internal moving parts. The horizontally adjacent square steel pipe columns 1 are connected together by the reinforcing plate 13, which increases the connection strength of the horizontal splicing part and prevents the horizontally adjacent square steel pipe columns 1 from separating under force.

[0029] Please see Figure 3 and Figure 4The mounting cavity 15 is equipped with a slider 16 and a connecting rod 17. The slider 16 and the connecting rod 17 are fixedly connected at one end. A spring 18 is sleeved on the outside of the connecting rod 17. The end of the connecting rod 17 away from the slider 16 passes through the mounting cavity 15 and extends to the outside of the square steel tube column 1.

[0030] Specifically, one end of the spring 18 is attached to the side of the slider 16, and the other end of the spring 18 is attached to the inner wall of the mounting cavity 15. When the connecting rod 17 is subjected to an outward external force, the connecting rod 17 drives the slider 16 to move from inside the mounting cavity 15 to the outside of the square steel pipe column 1. During the movement, the slider 16 squeezes the spring 18, causing the spring 18 to deform. The slider 16 slides inside the mounting cavity 15, keeping the movement of the connecting rod 17 stable and preventing the connecting rod 17 from deviating and getting stuck. When the external force is removed, the spring 18 returns to its original shape and pushes the slider 16 inward, driving the connecting rod 17 to move inward to the inside of the square steel pipe column 1 and reset. The part of the connecting rod 17 extending to the outside of the square steel pipe column 1 enters the slots 14 at both ends of the reinforcing plate 13, thereby fixing the reinforcing plate 13.

[0031] Please see Figure 3 and Figure 4 The connecting rod 17 extends to one end of the square steel pipe column 1 and is fixedly connected to a locking block 19. The reinforcing plate 13 is sleeved on the outside of the connecting rod 17 through the locking groove 14, and the locking block 19 is attached to the outer surface of the reinforcing plate 13.

[0032] Specifically, when installing the reinforcing plate 13, the slots 14 at both ends of the reinforcing plate 13 are aligned and fitted onto the outside of the connecting rod 17. The size of the locking block 19 is larger than the opening size of the slot 14, so that the locking block 19 cannot pass through the slot 14. When the connecting rod 17 completes its movement and resets, the connecting rod 17 drives the locking block 19 to move closer to the square steel pipe column 1, so that the locking block 19 is pressed against the outer surface of the reinforcing plate 13. The locking block 19 physically blocks the outside of the reinforcing plate 13, restricting the reinforcing plate 13 from moving outward, preventing the reinforcing plate 13 from falling off the connecting rod 17, and maintaining the connection state of the reinforcing plate 13 outside the square steel pipe column 1.

[0033] Please see Figure 2 and Figure 6 The side of the card block 19 near the side wall of the square steel pipe column 1 is a sloping structure. A limit post 20 is provided on the side of the card block 19 near the side wall of the square steel pipe column 1. One end of the limit post 20 passes through the reinforcing plate 13 and the side wall of the square steel pipe column 1 in sequence.

[0034] Specifically, the reinforcing plate 13 and the corresponding limiting post 20 on the side wall of the square steel pipe column 1 are provided with matching limiting holes. The side of the locking block 19 near the side wall of the square steel pipe column 1 is set as a sloping structure. When the reinforcing plate 13 is pressed against the side of the square steel pipe column 1, the reinforcing plate 13 contacts and squeezes the sloping structure of the locking block 19. After the sloping structure is subjected to force, the locking block 19 drives the connecting rod 17 to move away from the outside of the square steel pipe column 1, making room for the reinforcing plate 13 to enter the outside of the connecting rod 17. When the reinforcing plate 13 completely passes over the sloping structure, the locking block 19 resets inward. At the same time, the limiting post 20 set on the side of the locking block 19 moves synchronously with the reset of the locking block 19. The limiting post 20 passes through the limiting holes on the side wall of the reinforcing plate 13 and the square steel pipe column 1 in sequence and enters the inside of the side wall of the square steel pipe column 1, increasing the shear resistance between the reinforcing plate 13 and the square steel pipe column 1 and preventing the horizontal adjacent square steel pipe columns 1 from being misaligned vertically.

[0035] Please see Figure 6 The torsion spring 4 is sleeved on the outside of the bearing 5. One end of the torsion spring 4 is fixedly connected to the side wall of the rotating locking part 6, and the other end of the torsion spring 4 is fixedly connected to the inner wall of the square steel column 1 above.

[0036] Specifically, the torsion spring 4 is installed on the outside of the bearing 5. When the protrusion 7 moves upward and presses against the rotating locking member 6, the rotating locking member 6 rotates along the bearing 5, causing one end of the torsion spring 4 to rotate synchronously. The other end of the torsion spring 4 is restricted to the inner wall of the square steel column 1 above. The two ends of the torsion spring 4 are subjected to inconsistent forces, resulting in torsional deformation. When the connecting groove 8 on the side wall of the protrusion 7 moves to the position corresponding to the rotating locking member 6, the rotating locking member 6 loses the obstruction of the outer contour of the side wall of the protrusion 7. The torsion spring 4 releases the torque, pushing the rotating locking member 6 to rotate in the opposite direction, so that the rotating locking member 6 resets and enters the connecting groove 8 on the side of the protrusion 7. The torsion spring 4 provides power for the reset action of the rotating locking member 6.

[0037] Please see Figures 1-7 The connection between the rotating locking part 6 and the protrusion 7 is an arc-shaped structure, the protrusion 7 is a trapezoidal structure, and the flexible gasket 10 is made of one or more of the following materials: rubber, silicone, and polyurethane.

[0038] Specifically, the protrusion 7 is designed as a trapezoidal structure, with the top dimension of the protrusion 7 being smaller than the bottom dimension. The contact point between the rotating locking component 6 and the protrusion 7 is designed as an arc-shaped structure. When the protrusion 7 moves upward into the interior of the upper square steel column 1, the inclined sidewall of the trapezoidal shape contacts the arc-shaped structure, which gradually increases the horizontal thrust on the rotating locking component 6, reduces the frictional resistance encountered when the protrusion 7 moves, and prevents jamming between the protrusion 7 and the rotating locking component 6. The flexible gasket 10 is made of one or more of rubber, silicone, and polyurethane materials. Rubber, silicone, and polyurethane materials have physical elastic deformation characteristics. When subjected to downward pressure from the upper square steel column 1, they undergo compression deformation and adhere to the splicing surface of the upper and lower adjacent square steel columns 1, filling the tiny gaps between the contact surfaces of the metal components and improving the sealing and waterproofing effect of the joint connection.

[0039] This invention provides an installation method for a quick-assembly locking connection node for modular steel structure buildings, comprising the following steps: Multiple lower square steel pipe columns 1 are brought together and spliced. A connecting plate 9 is placed on top of the lower square steel pipe column 1, so that the protrusions 7 on the top of the lower square steel pipe column 1 pass through the first through groove 11 opened on the surface of the connecting plate 9, and the surface of the protrusions 7 passes through the flexible gasket 10 on the top surface of the connecting plate 9. Align the upper square steel column 1 with the lower square steel column 1 and move it downwards, so that the protrusion 7 passes through the second through groove 12 at the bottom of the upper square steel column 1 and extends the protrusion 7 into the interior of the upper square steel column 1. The protrusion 7 moves upward to contact the rotating locking part 6 inside the square steel column 1 above. The protrusion 7 squeezes the rotating locking part 6, and the rotating locking part 6 rotates along the bearing 5 and causes the torsion spring 4 to deform. As the protrusion 7 enters the interior of the square steel column 1 above, the torsion spring 4 returns to its original position, and one end of the rotating locking part 6 is inserted into the connecting groove 8 opened on the side wall of the protrusion 7. Align the reinforcing plate 13 with the joint of the side walls of the two horizontally adjacent square steel pipe columns 1, and align the limiting holes on the reinforcing plate 13 with the limiting holes on the side of the square steel pipe column 1. Align the reinforcing plate 13 with the protruding locking blocks 19 on the outer side of the two horizontally adjacent square steel pipe columns 1, and press the reinforcing plate 13 towards the square steel pipe column 1, so that the reinforcing plate 13 presses against the inclined surface of the locking block 19. After the inclined surface is subjected to force, it forces the locking block 19 and the connecting rod 17 to move away from the outer side of the square steel pipe column 1. During the movement, the connecting rod 17 drives the slider 16 to squeeze the interior. The spring 18 continues to press the reinforcing plate 13 until it passes the locking block 19. At this time, the connecting rod 17 enters the slots 14 at both ends of the reinforcing plate 13. The spring 18 resets and drives the connecting rod 17 to retract inward, so that the locking block 19 is re-attached to the outer surface of the reinforcing plate 13. During the process of the locking block 19 resetting inward, the limiting post 20 on the side of the locking block 19 moves synchronously, passing through the limiting holes aligned with the side wall of the reinforcing plate 13 and the square steel column 1 in sequence, and finally entering the interior of the square steel column 1, completing the entire node installation operation process.

[0040] Specifically, during the overall assembly of the nodes, the multiple lower square steel pipe columns 1 that need to be connected are brought together laterally and aligned. Then, the connecting plate 9 is placed horizontally on top of the lower square steel pipe columns 1, with the protrusion 7 on the top of the lower square steel pipe column 1 penetrating the first through groove 11 on the surface of the connecting plate 9 from bottom to top, and the protrusion 7 continuing upwards through the flexible pad 10 provided on the top surface of the connecting plate 9. Subsequently, the upper square steel pipe column 1 is moved, aligned with the lower square steel pipe column 1, and placed vertically downwards. During the descent of the upper square steel pipe column 1, the lower square steel pipe column 1... The top protrusion 7 penetrates the second through groove 12 at the bottom of the upper square steel column 1 and extends into the interior of the upper square steel column 1 along the second through groove 12. After the protrusion 7 enters the interior of the upper square steel column 1, the protrusion 7 contacts and presses the internal rotating locking member 6. After being subjected to force, the rotating locking member 6 rotates along the bearing 5, and at the same time drives the torsion spring 4 to deform. After the upper square steel column 1 has completely fallen, the connecting groove 8 on the side wall of the protrusion 7 moves to the end position of the rotating locking member 6. The torsion spring 4 releases the torque and resets, causing the rotating locking member 6 to reverse, so that the rotating locking member 6 is locked into the connecting groove 8 of the protrusion 7.

[0041] After completing the connection of the upper and lower steel pipe columns 1, align the reinforcing plate 13 with the splice joint of the side walls of the two horizontally adjacent square steel pipe columns 1, and align the limiting holes on the reinforcing plate 13 with the limiting holes on the side of the square steel pipe column 1. Align the reinforcing plate 13 with the protruding locking blocks 19 on the outer side of the two horizontally adjacent square steel pipe columns 1, and press the reinforcing plate 13 towards the square steel pipe column 1, so that the reinforcing plate 13 presses against the inclined surface of the locking block 19 and squeezes it. After the inclined surface is subjected to force, it forces the locking block 19 and the connecting rod 17 to move away from the outer side of the square steel pipe column 1. The connecting rod 17 moves away from the square steel pipe column 1. The spring 18 inside the middle is squeezed, and the reinforcing plate 13 is pressed until it passes the locking block 19. At this time, the connecting rod 17 enters the slots 14 at both ends of the reinforcing plate 13. The spring 18 resets and drives the connecting rod 17 to retract, so that the locking block 19 is re-fitted to the outer surface of the reinforcing plate 13. During the process of the locking block 19 resetting inward, the limiting post 20 on the side of the locking block 19 moves synchronously, passing through the limiting holes aligned with the side wall of the reinforcing plate 13 and the square steel column 1 in sequence, and finally entering the interior of the square steel column 1, completing the entire node installation operation process.

Claims

1. A quick-assembly locking connection node for modular steel structure buildings, characterized in that, include: Multiple square steel pipe columns (1), the upper square steel pipe column (1) is provided with a connecting assembly (2), the connecting assembly (2) includes a torsion spring (4) and a bearing (5) provided inside the upper square steel pipe column (1), a rotating locking member (6) is provided on the outside of the bearing (5), a protrusion (7) is fixedly connected to the top of the lower square steel pipe column (1), a connecting groove (8) is provided on the side wall of the protrusion (7), the connecting groove (8) matches the rotating locking member (6), a connecting plate (9) is provided between two adjacent square steel pipe columns (1) in the upper and lower sections, and a reinforcing assembly (3) is provided on the side wall of multiple adjacent square steel pipe columns (1) in the horizontal direction.

2. The modular steel structure building quick-assembly locking connection node according to claim 1, characterized in that, The top surface of the connecting plate (9) is provided with a flexible gasket (10), and a first through groove (11) is formed through the surface of the connecting plate (9) and the flexible gasket (10), and the protrusion (7) passes through the first through groove (11).

3. The modular steel structure building quick-assembly locking connection node according to claim 2, characterized in that, The bottom of the upper square steel pipe column (1) is provided with a second through groove (12), and the protrusion (7) passes through the second through groove (12) and extends into the interior of the upper square steel pipe column (1).

4. The modular steel structure building quick-assembly locking connection node according to claim 1, characterized in that, The reinforcement component (3) includes a reinforcement plate (13) disposed on the side of the square steel column (1), with slots (14) at both ends of the reinforcement plate (13) and an installation cavity (15) inside the side wall of the square steel column (1).

5. The modular steel structure building quick-assembly locking connection node according to claim 4, characterized in that, The mounting cavity (15) is provided with a slider (16) and a connecting rod (17). The slider (16) is fixedly connected to one end of the connecting rod (17). A spring (18) is sleeved on the outside of the connecting rod (17). The end of the connecting rod (17) away from the slider (16) passes through the mounting cavity (15) and extends to the outside of the square steel column (1).

6. The modular steel structure building quick-assembly locking connection node according to claim 5, characterized in that, The connecting rod (17) extends to one end of the square steel pipe column (1) and is fixedly connected to a locking block (19). The reinforcing plate (13) is sleeved on the outside of the connecting rod (17) through the locking groove (14), and the locking block (19) is attached to the outer surface of the reinforcing plate (13).

7. The modular steel structure building quick-assembly locking connection node according to claim 6, characterized in that, The side of the card block (19) near the side wall of the square steel pipe column (1) is a sloping structure. A limit post (20) is provided on the side of the card block (19) near the side wall of the square steel pipe column (1). One end of the limit post (20) passes through the reinforcing plate (13) and the side wall of the square steel pipe column (1) in sequence.

8. The modular steel structure building quick-assembly locking connection node according to claim 1, characterized in that, The torsion spring (4) is sleeved on the outside of the bearing (5). One end of the torsion spring (4) is fixedly connected to the side wall of the rotating locking member (6), and the other end of the torsion spring (4) is fixedly connected to the inner wall of the square steel column (1) above.

9. The modular steel structure building quick-assembly locking connection node according to claim 2, characterized in that, The connection between the rotating locking member (6) and the protrusion (7) is an arc-shaped structure, the protrusion (7) is a trapezoidal structure, and the flexible gasket (10) is one or more of the following materials: rubber, silicone, and polyurethane.

10. An installation method for quick-assembly locking connection nodes in modular steel structure buildings, characterized in that, The quick-assembly locking connection node for modular steel structure buildings as described in any one of claims 1-9 includes the following steps: Multiple lower square steel pipe columns (1) are brought together and spliced ​​together. A connecting plate (9) is placed on top of the lower square steel pipe column (1), so that the protrusions (7) on the top of the lower square steel pipe column (1) pass through the first through groove (11) opened on the surface of the connecting plate (9), and the surface of the protrusions (7) passes through the flexible gasket (10) on the top surface of the connecting plate (9). Align the upper square steel column (1) with the lower square steel column (1) and move it downwards, so that the protrusion (7) passes through the second through groove (12) at the bottom of the upper square steel column (1) and extends the protrusion (7) into the interior of the upper square steel column (1). The protrusion (7) moves upward to contact the rotating locking member (6) inside the square steel column (1) above. The protrusion (7) squeezes the rotating locking member (6). The rotating locking member (6) causes the torsion spring (4) to deform and rotate along the bearing (5). As the protrusion (7) enters the interior of the square steel column (1) above, the torsion spring (4) resets. One end of the rotating locking member (6) is inserted into the connecting groove (8) opened on the side wall of the protrusion (7). Align the reinforcing plate (13) with the locking blocks (19) on the outer sides of the two horizontally adjacent square steel pipe columns (1), so that the reinforcing plate (13) is pressed against the inclined surface of the locking block (19). The locking block (19) and the connecting rod (17) move outward. The connecting rod (17) presses the spring (18) inside the mounting cavity (15). The reinforcing plate (13) continues to press so that the outer wall of the connecting rod (17) enters the slots (14) at both ends of the reinforcing plate (13). The spring (18) resets and the locking block (19) is pressed against the outer surface of the reinforcing plate (13). The limiting post (20) on the side of the locking block (19) passes through the side wall of the reinforcing plate (13) and the square steel pipe column (1) in sequence and enters the interior of the square steel pipe column (1).

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