Assembly type steel structure beam column joint self-locking connecting device

Abstract

The assembly type steel structure beam column joint self-locking connecting device comprises an assembly assembly and a locking assembly, the assembly assembly comprises a first assembly part connected with a stand column and a second assembly part connected with a cross beam, the first assembly part comprises an assembly section, and the assembly section is polygonal and is composed of a plurality of assembly plate faces; each assembly plate surface is used for being matched with the corresponding assembly part II; the locking assembly comprises a self-locking piece and a torsional spring buckle, the self-locking piece comprises a self-locking seat and a bolt rod, the torsional spring buckle is used for being connected with a first positioning groove in an assembly plate face adjacent to the first assembly piece in a buckled mode, and the bolt rod is provided with a buckle lock clamp and a lock groove matched with the adjacent buckle lock clamp; when the assembly parts II are arranged on the assembly plate surfaces adjacent to the assembly parts I, the bolt rods matched with the assembly parts II are buckled and clamped with the lock grooves of the bolt rods on the adjacent assembly parts II on one side through the buckling clamps; and when the assembly plate surface adjacent to the assembly part I is not provided with the assembly part II, the torsion spring buckle matched with the assembly part II is buckled with the first positioning groove of the adjacent assembly plate surface.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and particularly relates to a self-locking connection device for assembled steel structure beam-column joints. Background Art

[0002] In the fields of construction and engineering, especially in applications using steel structures, the importance of connection technology is self-evident. Traditional steel structure connection methods mostly rely on welding, bolt connection or other traditional fixing means.

[0003] However, these traditional methods often have many limitations. For example, although welding can provide a stable connection, it does not have adjustability and disassembly flexibility, and is prone to fatigue cracks in high-stress environments. Bolt connection, although detachable and adjustable in some cases, usually requires regular inspection and tightening to prevent loosening and failure, and these problems are particularly prominent in environments with frequent vibrations or changing loads.

[0004] In addition, with the development of modern architectural and engineering designs towards more efficient and flexible directions, the requirements for connection technology have also increased accordingly. Especially in modular buildings and rapid assembly structures, traditional steel structure connection methods often face many challenges. Existing assembled structures will set assembly seats on the columns, and the ends of the cross beams are respectively positioned and connected to the assembly seats. The separate connection method makes it impossible to form a force between the cross beams, resulting in a low overall structural strength. Summary of the Invention

[0005] Aiming at the disadvantage that when multiple cross beams are connected to a column in the prior art, there is a lack of mutual force between the cross beams, resulting in a low structural strength of the overall structure, the present invention provides a self-locking connection device for assembled steel structure beam-column joints.

[0006] To solve the above technical problems, the present invention is solved by the following technical solutions: A self-locking connection device for assembled steel structure beam-column joints, used to cooperate with columns and cross beams, includes: an assembly component, including a first fitting connected to the column and a second fitting connected to the cross beam. The first fitting includes a fixed section cooperating with the column and an assembly section for cooperating with the second fitting. The assembly section is polygonal and composed of a plurality of assembly plate surfaces, and each assembly plate surface is used to cooperate with the second fitting respectively;

[0007] A positioning component, including a first positioning groove provided on the assembly plate surface and a first positioning strip provided on the second fitting, and the first positioning strip can be slidably arranged along the first positioning groove;

[0008] The locking assembly includes a self-locking member slidably connected to the second fitting and a torsion spring buckle that moves synchronously with the self-locking member. The self-locking member includes a self-locking seat slidably engaged with the second fitting and a bolt rod connected to the self-locking seat. The torsion spring buckle is pivotally connected to the self-locking seat and is configured to be snap-fitted with a first positioning groove on the assembly plate surface adjacent to the first fitting. The bolt rod is in a strip shape, and the assembly plate surface is provided with a bolt hole that cooperates with the bolt rod. The bolt rod is provided with a locking clip and a locking groove that cooperates with an adjacent locking clip.

[0009] When the second fittings are arranged on the assembly plate surfaces adjacent to the first fitting, the bolt rods cooperating with the second fittings are snap-fitted and clamped with the locking grooves of the bolt rods on the second fitting adjacent to one side through the locking clips.

[0010] When the second fittings are not arranged on the assembly plate surfaces adjacent to the first fitting, the torsion spring buckle cooperating with the second fitting is snap-fitted with the first positioning groove on the adjacent assembly plate surface.

[0011] By adopting the above technical solution, the self-locking members can be snap-fitted with adjacent self-locking members, so that there is an interaction force between the crossbeams. When the second fittings are arranged on each assembly plate surface, the fittings cooperating with the crossbeams are in a mutually pulling state. Compared with the traditional single second fitting cooperating with a single snap-lock connection, the stability of this solution is higher. When the locking members are not arranged on the adjacent assembly plate surfaces, the torsion spring buckle can be snap-fitted with the adjacent first positioning groove, which can also play a fixing role.

[0012] The present invention is further configured as follows: The locking clip includes symmetrically arranged claw one and claw two. Both claw one and claw two are pivotally connected to the bolt rod, and both claw one and claw two are provided with elastic members. The elastic members are used to drive the ends of claw one and claw two away from the pivot connection point to always move towards each other.

[0013] By adopting the above technical solution, claw one and claw two are cooperatively arranged through the elastic members, which facilitates keeping the snap connection with the locking groove of the adjacent bolt member all the time.

[0014] The present invention is further configured as follows: The first positioning groove sequentially includes a guiding section, a guiding section, and a locking section. When the first positioning bar moves along the guiding section, the guiding section drives the first positioning bar to move towards the assembly plate surface. When the first positioning bar enters the locking section, the second fitting is in contact with the assembly plate surface.

[0015] By adopting the above technical solution, through the design of the first positioning groove, it is convenient to fix the second fitting to the assembly plate surface and at the same time has a positioning effect.

[0016] The present invention is further configured such that: the second fitting is provided with a second positioning groove, and a limiting block is slidably arranged in the second positioning groove. When the limiting block is arranged in cooperation with the locking groove of the bolt rod, the limiting block restricts the movement of the bolt rod. When the limiting block is disengaged from the locking groove of the bolt rod, the movement of the bolt rod is not restricted by the limiting block. The first fitting is provided with a plug for driving the limiting block to move. When the first positioning strip enters the locking section, the limiting block faces the plug, and the plug drives the limiting block to move and disengages from the locking groove of the self-locking member.

[0017] By adopting the above technical solution, the limiting block in the second fitting can restrict the bolt rod from moving out of the second fitting by cooperating with the locking groove of the bolt rod, so that when the second fitting and the first fitting are not driven to be assembled, the bolt rod remains in a non-extended state, avoiding the bolt rod from being knocked outside. When the limiting block is disengaged from the locking groove under the action of the plug, the bolt rod can extend out of the second fitting and enter the first fitting to be in a buckled state with the adjacent bolt rod.

[0018] The present invention is further configured such that: the plug is provided with a first positioning hole. When the plug drives the limiting block to disengage from the self-locking member, the first positioning hole of the plug is arranged opposite to the bolt rod of the self-locking member, and the bolt rod moves through the first positioning hole and then enters the bolt hole.

[0019] By adopting the above technical solution, the first positioning hole of the plug can play a role in positioning and restricting the bolt rod. When there is a deviation in the placement position of the second fitting relative to the first fitting, the first positioning hole can restrict the bolt rod from moving out, facilitating the staff to check the installation angle of the cross beam.

[0020] The present invention is further configured such that: the first fitting is provided with a plurality of plugs, and the second fitting is provided with second positioning grooves corresponding to the plugs. A second positioning hole is opened at a position of the second positioning groove opposite to the bolt rod. When the plug drives the limiting block to disengage from the self-locking member, the first positioning hole of the plug is arranged opposite to the bolt rod of the self-locking member, and the bolt rod sequentially passes through a plurality of first positioning holes and second positioning holes and then enters the bolt hole.

[0021] By adopting the above technical solution, a plurality of plugs and a plurality of second positioning grooves can be used to increase the structural stability of the first fitting and the second fitting.

[0022] The present invention is further configured such that: a first spring cooperating with the self-locking member is arranged in the second fitting, and the first spring drives the self-locking member to always tend to move towards the column direction.

[0023] By adopting the above technical solution, the function of the first spring is to facilitate the self-locking member to automatically enter the first fitting after being unlocked by the plug.

[0024] The present invention is further configured as follows: the torsion spring buckle includes a fastening part, the fastening part includes a fastening section fastened to the first positioning groove, the fastening sections are provided in plurality and arranged at intervals, and the first positioning strips are provided in plurality at intervals. When the assembly plate surfaces of the assembly part one are all provided with the assembly part two and the first positioning strips are all located in the locking section of the first positioning groove, the torsion spring buckle is fastened to the first positioning groove of the adjacent assembly plate surface, and the plurality of the fastening sections are located between the plurality of first positioning strips.

[0025] By adopting the above technical solution, the fastener is provided with several fastening sections, and the several fastening sections are arranged at the intervals of several first positioning strips, and the two cross each other, so that the assembly part two is engaged with each other under the action of the assembly part one, and the assembly part two and the adjacent assembly part two can be driven to also bear the force of mutual support along the axial direction of the column.

[0026] The present invention is further configured as follows: a positioning groove connected to the first positioning groove is provided on the assembly plate surface; when the torsion spring buckle is buckled with the adjacent first positioning groove, the torsion spring buckle is located in both the first positioning groove and the positioning groove at the same time.

[0027] By adopting the above technical solution, the positioning groove is designed so that when the snap-fit section is snapped into the first positioning groove, the snap-fit section is simultaneously driven into the positioning groove. The positioning groove can be used to limit the movement of the snap-fit section along the axial direction of the column, and at the same time limit the movement of the adjacent assembly part 2 along the axial direction of the column.

[0028] The present invention is further configured such that: the torsion spring buckles are all arranged on the same side of the second assembly part; when a plurality of the assembly plate surfaces are all provided with the second assembly part, the torsion spring buckles of the locking assembly are all arranged in the same direction of the self-locking seat.

[0029] By adopting the above technical solution, the torsion spring buckles in the same direction can avoid mutual interference between the torsion spring buckles. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the external structure of a self-locking connection device for a prefabricated steel structure beam-column node in an embodiment;

[0031] Figure 2 This is a partial assembly exploded view of a self-locking connection device for a prefabricated steel structure beam-column node in an embodiment;

[0032] Figure 3 This is a schematic diagram of assembling a single assembly part 2 with an assembly part 1 in the embodiment;

[0033] Figure 4 2. It is a schematic diagram of the latch rod structure in the embodiment;

[0034] Figure 5 This is a structural diagram of the second assembly part in the embodiment;

[0035] Figure 6 It is a top view of the combined state of a self-locking connection device for beam-column joints of prefabricated steel structures in an embodiment;

[0036] Figure 7 It is a schematic structural diagram of a fastening member in an embodiment;

[0037] Figure 8 It is a diagram of the cooperation state between a limit stop block and an insertion block in an embodiment.

[0038] The names of the parts referred to by each digital label in the above drawings are as follows: 1. Assembly component; 11. First fitting; 111. Fixed section; 112. Assembly section; 113. Assembly plate surface; 114. Bearing plate surface; 12. Second fitting; 121. Slide rail; 122. Sliding groove; 13. Upper cover plate; 131. Auxiliary plate surface; 2. Positioning component; 21. First positioning groove; 211. Introduction section; 212. Guiding section; 213. Locking section; 22. First positioning strip; 23. Second positioning groove; 24. Insertion block; 241. First positioning hole; 242. Second positioning hole; 243. Positioning groove; 3. Locking component; 31. Self-locking member; 311. Self-locking seat; 312. Plug rod; 313. Buckle clamp; 3131. First jaw; 3132. Second jaw; 3133. Guiding angle; 3134. Guiding angle; 3135. Elastic member; 314. Plug hole; 315. Locking groove; 316. First spring; 32. Torsion spring buckle; 33. Fastening member; 331. Pivoting section; 332. Connecting section; 333. Buckling section; 34. Limit stop block; 341. Sliding section; 342. Limiting section; 4. Column; 5. Cross beam. Detailed implementation manners

[0039] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0040] Embodiment 1:

[0041] A self-locking connection device for beam-column joints of prefabricated steel structures, used to cooperate with a column 4 and a cross beam 5. The structure of the column 4 is diverse, generally mainly in the form of a cylindrical or quadrilateral column 4 structure. The structure of the cross beam 5 is also various, generally mainly in the form of an I-shaped, H-shaped steel or square steel, and other types of steel can also be used. The self-locking connection device for beam-column joints of prefabricated steel structures includes an assembly component 1, a positioning component 2, and a locking component 3.

[0042] See Figure 1 and Figure 2, the assembly component 1 includes a first fitting 11 connected to the vertical column 4 and a second fitting 12 connected to the cross beam 5. The first fitting 11 includes a fixed section 111 sleeved on the vertical column 4 and an assembly section 112 for fixing the cross beam 5. The fixed section 111 is sleeved on the end or the middle position of the vertical column 4. The inner circle of the fixed section 111 has the same shape as the vertical column 4 and the two are in clearance fit. After the fixed section 111 is sleeved on the vertical column 4, it is connected by welding, but it is not limited to welding, and it can also be fixed to the vertical column 4 by screwing with bolts. The assembly section 112 is polygonal, and each side of its polygon is composed of an assembly plate surface 113. The assembly plate surface 113 of the first fitting 11 can be formed by bending, or by integral casting or welding. In this embodiment, the assembly section 112 is a quadrilateral composed of four assembly plate surfaces 113. Each assembly plate surface 113 is provided with a receiving plate surface 114, and all the receiving panels are integrally connected. The receiving plate surface 114 is perpendicular to the assembly plate surface 113 and parallel to the ground for erecting the cross beam 5. In this embodiment, the assembly plate surface 113 and the receiving plate surface 114 are integrally cast. A welded triangular support for strengthening the structural strength can be provided at the intersection of the assembly plate surface 113 and the receiving plate surface 114. Each assembly plate surface 113 can receive a second fitting 12, and the number of the second fittings 12 corresponding to the number of cross beams 5 supported by the vertical column 4 is the same as the number of the assembly plate surfaces 113. The second fitting 12 is in a long strip block structure. One end of the second fitting 12 extends into one end of the cross beam 5 and the two are screwed together with screws.

[0043] See Figures 1 to 3 , the positioning component 2 includes a first positioning groove 21 provided on the assembly plate surface 113 and a first positioning strip 22 provided on the second fitting 12. Each assembly plate surface 113 is provided with the first positioning groove 21 and at least two are provided. In this embodiment, two first positioning grooves 21 are provided and are respectively located on the left and right sides of the assembly plate surface 113. The length direction of the first positioning groove 21 is opened perpendicular to the bottom surface. The first positioning strip 22 is provided at the end of the second fitting 12. The first positioning strip 22 can slide along the first positioning groove 21. The first positioning groove 21 sequentially includes a guiding section 211, a guiding section 212 and a locking section 213. The width of the guiding section 211 is greater than the width of the first positioning strip 22. The width of the guiding section 212 gradually decreases from the guiding section 211 to the locking section 213. The locking section 213 is in clearance fit with the first positioning strip 22. The guiding section 212 is inclined. When the first positioning strip 22 moves along the guiding section 212, the inclined guiding section 212 drives the first positioning strip 22 to move towards the assembly plate surface 113. When the first positioning strip 22 enters the locking section 213, the end surface of the second fitting 12 is in contact with the assembly plate surface 113.

[0044] See Figure 2 and Figure 3, the locking assembly 3 includes a self-locking member 31 slidably connected to the second fitting 12 and a torsion spring buckle 32 that moves synchronously with the self-locking member 31. The self-locking member 31 includes a self-locking seat 311 and a latch rod 312. A slide rail 121 protrudes from the side of the second fitting 12. The self-locking seat 311 is provided with a chute that cooperates with the slide rail 121. The self-locking seat 311 can move linearly along the slide rail 121 through the chute. The linear direction of the slide rail 121 is perpendicular to the assembly board surface 113.

[0045] See Figure 2 , the latch rod 312 is threadedly connected to the self-locking seat 311 by screws. The latch rod 312 is strip-shaped. An insertion hole 314 for the latch rod 312 to pass through is provided on the assembly board surface 113. When the first fitting 11 is sleeved on the middle part of the column 4, a through hole opposite to the insertion hole 314 is also provided in the column 4. A clamping clip 313 for clamping adjacent parts is provided at the end of the latch rod 312. A locking groove 315 for clamping by the clamping clip 313 is provided at the middle position of the latch rod 312. Combining Figure 4 , the clamping clip 313 includes a first clamping jaw 3131 and a second clamping jaw 3132. Both the first clamping jaw 3131 and the second clamping jaw 3132 are pivotally connected to the latch rod 312 by a pivot shaft. Elastic members 3135 are provided on the first clamping jaw 3131 and the second clamping jaw 3132. In this embodiment, the elastic members 3135 are tension springs. The two ends of the tension spring are respectively connected to the first clamping jaw 3131 and the second clamping jaw 3132, but it is not limited to a tension spring. A torsion spring can also be used. When a torsion spring is used, both the first clamping jaw 3131 and the second clamping jaw 3132 are respectively connected to the torsion spring. Whether the elastic member 3135 is a tension spring or a torsion spring, it always drives the ends of the first clamping jaw 3131 and the second clamping jaw 3132 away from the pivot to move closer to each other, and finally drives the ends of the first clamping jaw 3131 and the second clamping jaw 3132 away from the pivot to abut against each other. The first clamping jaw 3131 and the second clamping jaw 3132 are symmetrically arranged and both are C-shaped. Guide angles 3133 are provided at the ends of the first clamping jaw 3131 and the second clamping jaw 3132 away from the pivot. Guide angles 3134 are also provided at the positions where the first clamping jaw 3131 and the second clamping jaw 3132 are used to clamp the adjacent locking groove 315.

[0046] See Figure 3 , in this embodiment, two latch rods 312 are connected to the self-locking seat 311. Two sliding grooves 122 for the latch rods 312 to slide are provided in each second fitting 12. The latch rods 312 are cylindrical. The cross-section of the sliding groove 122 is C-shaped. The sliding direction of the sliding groove 122 is towards the assembly board surface. The two latch rods 312 are arranged in parallel. The advantage of setting multiple latch rods 312 is to increase the stability of self-locking and avoid insufficient pressure-bearing of a single rod. However, it is not limited to two latch rods 312. Multiple latch rods 312 can also be used. Insertion holes 314 opposite to the latch rods 312 are provided on the assembly board surface 113.

[0047] See Figure 2 、 Figure 3 and Figure 8 As shown in Figure 2 , Figure 3 and Figure 8 , a first spring 316 is arranged in the sliding groove 122. The first spring 316 is used to drive the latch rod 312 to always move in the direction towards the assembly panel. The locking assembly 3 further includes a limit stop 34 slidably arranged in the second fitting 12. The second fitting 12 is provided with a second positioning groove 23 for the limit stop 34 to slide. The limit stop 34 is used to limit the movement of the latch rod 312. The sliding direction of the limit stop 34 in the second positioning groove 23 is perpendicular to the sliding direction of the latch rod 312 in the sliding groove 122. The limit stop 34 includes a sliding section 341 and a limiting section 342 protruding from the sliding section 341. In this embodiment, two limiting sections 342 protrude from the sliding section 341. The two limiting sections 342 can be respectively arranged in cooperation with the two latch rods 312. The sliding of the limit stop 34 drives the limiting section 342 to be arranged in cooperation with the locking groove 315 of the latch rod 312. When the limiting section 342 is arranged in cooperation with the locking groove 315, the limiting section 342 restricts the movement of the latch rod 312 in the sliding groove 122. An insertion block 24 cooperating with the limit stop 34 protrudes from the receiving panel. When the first positioning strip 22 completely enters the first positioning groove 21, the insertion block 24 faces the limit stop 34 and pushes the limit stop 34 to move. When the limit stop 34 moves, the limiting section 342 disengages from the locking groove 315, and the latch rod 312 and the self-locking seat 311 move in the direction towards the assembly panel surface 113 under the action of the first spring 316 and enter the insertion hole 314.

[0048] See Figure 3 and Figure 5 As shown in Figure 3 and Figure 5 , a plurality of insertion blocks 24 protrude from each receiving panel surface 114 of the first fitting. The second fitting 12 is provided with a plurality of second positioning grooves 23 cooperating with the plurality of insertion blocks 24. In this embodiment, two insertion blocks 24 are provided. One of the insertion blocks 24 is arranged in cooperation with the locking groove 315 of the latch rod 312. The insertion block 24 is provided with a first positioning hole 241. The second positioning groove 23 is provided with a second positioning hole 242 at a position opposite to the latch rod 312. When the insertion block 24 drives the limit stop 34 to disengage from the self-locking member 31, the first positioning hole 241 of the insertion block 24 is arranged opposite to the latch rod 312 of the self-locking member 31. Under the action of the first spring 316, the latch rod 312 moves through a plurality of first positioning holes 241 and a plurality of second positioning holes 242 in sequence and then enters the insertion hole 314.

[0049] See Figure 3 、 Figure 5 and Figure 6When the locking cam 313 is in the closed position, the locking cam 313 of the locking cam 313 is in the closed position, and the locking cam 313 of the locking cam 313 is in the closed position, so that the cam 313 of the locking cam 313 is locked. When the locking tongs 312 are in the process of being unlocked, the locking tongs 312 of the first latch rod 312 are unlocked and the locking tongs 312 of the second latch rod 312 are unlocked.

[0050] See also Figure 2 and Figure 7, the torsion spring buckle 32 is pivotally connected to the self-locking seat 311. The torsion spring buckle 32 includes a buckling member 33 and a first torsion spring for driving the buckling member 33 to be buckled with the first positioning groove 21. The buckling member 33 includes a pivoting section 331, a connecting section 332, and a buckling section 333. The first torsion spring is installed at the pivoting section 331 of the buckling member 33. The first torsion spring can be used to drive the buckling section 333 of the buckling member 33 to always rotate towards the end of the fitting part two. During the process of the self-locking seat 311 moving towards the assembly board surface direction, the torsion spring buckle is extruded by the slope formed between the assembly board surface and the adjacent assembly panel, driving the buckling section 333 to be buckled with the first positioning groove 21 of the adjacent assembly panel 113. The buckling sections 333 are all in a C shape for buckling the first positioning groove 21 of the adjacent assembly board surface 113. A plurality of buckling sections 333 are evenly spaced and protrude from the connecting section 332. In this embodiment, two buckling sections 333 are arranged at intervals. A plurality of first positioning strips 22 are arranged at intervals, and a plurality of first positioning strips 22 are located on the same straight line. In this embodiment, three first positioning strips 22 are arranged on each side of the fitting part two 12. When the assembly board surfaces 113 of the fitting part one 11 are all provided with the fitting part two 12 and the first positioning strips 22 are all located in the locking section 213 of the first positioning groove 21, the torsion spring buckle 32 is buckled with the first positioning groove 21 of the adjacent assembly board surface 113. The two buckling sections 333 are respectively located between the three first positioning strips 22. A positioning groove 243 communicating with the first positioning groove 21 is opened on the assembly board surface 113. When the buckling section 333 of the torsion spring buckle 32 is buckled with the adjacent first positioning groove 21, the buckling section 333 is simultaneously located in the first positioning groove 21 and the positioning groove 243, so that the buckling section 333 simultaneously positions the first positioning strip 22 of the adjacent fitting part two 12 and the assembly board surface 113. The four torsion spring buckles 32 are all arranged on the same side relative to the fitting part two 12. When the fitting part two 12 is provided on each of the fitting board surfaces 113, the torsion spring buckles 32 of the locking assembly 3 are in the same direction, so that the multiple torsion spring buckles 32 will not interfere with each other during buckling.

[0051] See Figure 1 , the fitting part one 11 is threadedly connected with an upper cover plate 13 through a screw. The upper cover plate 13 is used to cover the hole position of the fitting part one 11. The upper cover plate 13 protrudes with an auxiliary board surface 131. The auxiliary board surface 131 is located on one side of the fitting part two 12. The auxiliary cover surface is threadedly connected with the fitting part two 12 through a screw.

Claims

1. An assembled steel structure beam-column joint self-locking connection device, which is used to cooperate with a column (4) and a cross beam (5), and is characterized in that, Including: An assembly component (1), including a first fitting (11) connected to a vertical column (4) and a second fitting (12) connected to a cross beam (5). The first fitting (11) includes a fixed section (111) that mates with the vertical column (4) and an assembly section (112) for mating with the second fitting (12). The assembly section (112) is polygonal and consists of a number of assembly plate surfaces (113), and each assembly plate surface (113) is used to be respectively arranged in cooperation with the second fitting (12); A positioning component (2), including a first positioning groove (21) provided on the assembly plate surface (113) and a first positioning strip (22) provided on the second fitting (12), and the first positioning strip (22) can be slidably arranged along the first positioning groove (21); A locking component (3), including a self-locking member (31) slidably connected to the second fitting (12) and a torsion spring buckle (32) that moves synchronously with the self-locking member (31). The self-locking member (31) includes a self-locking seat (311) that slidably mates with the second fitting (12) and a bolt rod (312) connected to the self-locking seat (311). The torsion spring buckle (32) is pivotally connected to the self-locking seat (311) and is used to be buckled and arranged with the first positioning groove (21) on the adjacent assembly plate surface (113) of the first fitting (11). The bolt rod (312) is in a long strip shape, and the assembly plate surface (113) is provided with a bolt hole (314) that cooperates with the bolt rod (312). The bolt rod (312) is provided with a locking clip (313) and a locking groove (315) that cooperates with the adjacent locking clip (313); When the second fittings (12) are arranged on all the adjacent assembly plate surfaces (113) of the first fitting (11), the bolt rods (312) that cooperate with the second fittings (12) are clamped by being buckled with the locking grooves (315) of the bolt rods (312) on the adjacent second fitting (12) on one side through the locking clips (313); When the second fittings (12) are not arranged on the adjacent assembly plate surfaces (113) of the first fitting (11), the torsion spring buckles (32) that cooperate with the second fittings (12) are buckled and arranged with the first positioning grooves (21) of the adjacent assembly plate surfaces (113).

2. The self-locking connection device for an assembled steel structure beam-column joint according to claim 1, wherein: The locking clip includes symmetrically arranged jaw one (3131) and jaw two (3132). Both jaw one (3131) and jaw two (3132) are pivotally connected to the bolt rod (312), and both jaw one (3131) and jaw two (3132) are provided with elastic members (3135). The elastic members (3135) are used to drive the ends of jaw one (3131) and jaw two (3132) away from the pivot joint to always have a moving trend of approaching each other.

3. The self-locking connection device for prefabricated steel structure beam-column joints according to claim 1, wherein: The first positioning groove (21) sequentially includes an introduction section (211), a guiding section (212), and a locking section (213). When the first positioning bar (22) moves along the guiding section (212), the guiding section (212) drives the first positioning bar (22) to move towards the assembly board surface (113). When the first positioning bar (22) enters the locking section (213), the second assembly part (12) is in abutting contact with the assembly board surface (113).

4. The self-locking connection device for an assembled steel structure beam-column joint according to claim 3, characterized in that: The second assembly part (12) is provided with a second positioning groove (23). A limiting block (34) is slidably arranged in the second positioning groove (23). When the limiting block (34) is arranged in cooperation with the locking groove (315) of the plug pin rod (312), the limiting block (34) restricts the movement of the plug pin rod (312). When the limiting block (34) is disengaged from the locking groove (315) of the plug pin rod (312), the movement of the plug pin rod (312) is not restricted by the limiting block (34). The first assembly part (11) is provided with a plug block (24) for driving the limiting block (34) to move. When the first positioning bar (22) enters the locking section (213), the limiting block (34) is opposite to the plug block (24), and the plug block (24) drives the limiting block (34) to move and disengage from the locking groove (315) of the self-locking part (31).

5. The self-locking connection device for prefabricated steel beam-column joints according to claim 4, characterized in that: The plug block (24) is provided with a first positioning hole (241). When the plug block (24) drives the limiting block (34) to disengage from the self-locking part (31), the first positioning hole (241) of the plug block (24) is arranged opposite to the plug pin rod (312) of the self-locking part (31). The plug pin rod (312) moves through the first positioning hole (241) and then enters the plug pin hole (314).

6. The self-locking connection device for an assembled steel structure beam-column joint according to claim 5, characterized in that: The first assembly part (11) is provided with a plurality of plug blocks (24). The second assembly part (12) is provided with second positioning grooves (23) corresponding to the plug blocks (24). A second positioning hole (242) is formed at a position where the second positioning groove (23) is opposite to the plug pin rod (312). When the plug block (24) drives the limiting block (34) to disengage from the self-locking part (31), the first positioning hole (241) of the plug block (24) is arranged opposite to the plug pin rod (312) of the self-locking part (31). The plug pin rod (312) sequentially passes through a plurality of first positioning holes (241) and second positioning holes (242) and then enters the plug pin hole (314).

7. An assembled steel structure beam-column joint self-locking connection device according to claim 1 or 6, characterized in that: A first spring (316) cooperating with the self-locking part (31) is arranged in the second assembly part (12). The first spring (316) drives the self-locking part (31) to always tend to move towards the assembly board surface direction.

8. The self-locking connection device for an assembled steel structure beam-column joint according to claim 1, characterized in that: The torsion spring buckle (32) includes a buckling part (33). The buckling part (33) includes buckling sections (333) buckling with the first positioning groove (21). The buckling sections (333) are provided with a plurality of them and are arranged at intervals. The first positioning bars (22) are arranged at intervals. When the assembly surfaces (113) of the first fitting (11) are all provided with the second fitting (12) and the first positioning strips (22) are all located in the locking section (213) of the first positioning groove (21), the torsion spring buckle (32) is buckled with the first positioning groove (21) of the adjacent assembly surface (113), and a plurality of the buckling sections (333) are located between a plurality of the first positioning strips (22).

9. The self-locking connection device for an assembled steel structure beam-column joint according to claim 8, wherein: A positioning groove (243) communicating with the first positioning groove (21) is formed in the assembly surface (113). When the torsion spring buckle (32) is buckled with the adjacent first positioning groove (21), the torsion spring buckle (32) is simultaneously located in the first positioning groove (21) and the positioning groove (243).

10. The self-locking connection device for prefabricated steel structure beam-column joints according to claim 1, characterized in that: The torsion spring buckles (32) are all arranged on the same side of the second fitting (12). When the second fittings (12) are arranged on a plurality of the assembly surfaces (113), the torsion spring buckles (32) of the locking assembly (3) are all arranged in the same direction of the self-locking seat (311).

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