Modular steel structure mortise lock type connecting joint

Abstract

The application belongs to the technical field of modular building. A modular steel structure latch type connecting joint is disclosed, comprising: a first corner piece; a second corner piece arranged below the first corner piece; a buckle assembly comprising a first lock cylinder arranged on the first corner piece, the first lock cylinder being configured to be rotatable relative to the first corner piece, and a pair of elastic units arranged on the end face of the second corner piece, the first lock cylinder passing between the pair of elastic units and extending into the second corner piece, so that the first corner piece switches between the locked state and the unlocked state relative to the second corner piece. The application can realize the connection of the first corner piece and the second corner piece by cooperation of the first lock cylinder and the elastic units, without the need to open holes in the first corner piece and the second corner piece, and the first corner piece and the second corner piece can be conveniently disassembled.

Description

Technical Field

[0001] This invention belongs to the field of modular building technology, and in particular relates to a modular steel structure interlocking connection node. Background Technology

[0002] Modular steel structures are a highly industrialized building and engineering structural system composed of standardized steel modules. These modules are prefabricated in factories and transported to the site for installation using appropriate methods based on their dimensions. The key advantages of modular steel structures lie in their rapid construction, controllable quality, and sustainability, enabling them to adapt to various types of building projects. Furthermore, the modules can be reused and reconfigured, reducing waste and environmental impact, making it an emerging building form. The node connections between modules are crucial, as they not only face complex stress conditions but also directly affect the structural safety and stability, and contribute to efficient resource management. A well-designed and easily constructed node system ensures structural safety, durability, and cost-effectiveness.

[0003] Patent CN112012338A describes a mortise and tenon type modular steel structure connection node, which achieves connection through upper mortise and tenon parts, lower mortise and tenon parts, mortise and tenon rods, and sleeve connectors. This method utilizes mortise and tenon interlocking during assembly and then fixes with bolts, which helps simplify the installation process. However, the mortise and tenon parts require highly precise manufacturing, and only one high-strength bolt is used between modules to withstand shear force, so the shear resistance may be limited. Patent CN215670136U describes a bolted connection node, where modular columns are welded to column top plates, and modular beams are welded to modular columns, with end plates connected to horizontal connecting plates by bolts. This method provides a certain shear resistance, but requires hand holes at the column ends, which may cause stress concentration at the hand holes and reduce the node performance. Patent CN219100305U proposes a prefabricated modular steel frame inter-module tie bolt connection device. This connection device uses unidirectional bolts to connect the column top plate to the outer sleeve, which helps improve the overall structural stiffness. However, since the tie bolts need to pass through four pre-set bolt holes, the sensitivity of the joint to construction accuracy is increased, and the convenience of construction is reduced.

[0004] Furthermore, none of the above technical solutions are easy to disassemble. Therefore, a modular steel structure interlocking connection node is provided to solve the above problems. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention proposes a modular steel structure latch-type connection node, which can realize the connection between the first corner piece and the second corner piece by cooperating with the first lock cylinder and the elastic unit, without the need to open holes at the first corner piece and the second corner piece, and at the same time, the first corner piece and the second corner piece can be easily disassembled.

[0006] To achieve the above objectives, the present invention provides a modular steel structure interlocking connection node, comprising:

[0007] First corner piece;

[0008] The second corner piece is positioned below the first corner piece;

[0009] The latch assembly includes a first lock cylinder disposed on the first corner piece, the first lock cylinder being configured to rotate relative to the first corner piece, and a pair of elastic units disposed on the end face of the second corner piece, the first lock cylinder passing between the pair of elastic units and extending into the second corner piece, such that the first corner piece switches between a locked state and an unlocked state relative to the second corner piece.

[0010] In the locked state, a pair of elastic units are configured to limit the first lock cylinder so that the first corner piece and the second corner piece are relatively fixed. In the unlocked state, the first lock cylinder is configured to rotate so that the first lock cylinder moves vertically between the pair of elastic units.

[0011] Furthermore, it also includes a node plate, which is disposed between the first corner piece and the second corner piece. The node plate is mounted on the end face of the second corner piece near the first corner piece, and a through hole is provided on the node plate for the first lock cylinder to pass through.

[0012] Furthermore, the first lock cylinder includes: a first column, disposed within the cavity of the first corner piece;

[0013] The second column is fixed to one end of the first column near the second corner piece, and the second column extends through the end face of the first corner piece and is rotatably connected to the first corner piece;

[0014] The locking block is fixed to the other end of the second column, and the end away from the second column is an arc-shaped surface. In the locked state, the elastic unit is located between the first column and the locking block.

[0015] Furthermore, a drive groove is provided at the end of the first column away from the second corner piece, and the drive groove is configured to connect a drive rod so that the first column rotates relative to the first corner piece.

[0016] Furthermore, a receiving groove is provided on the end face of the second corner piece near the first corner piece, and the elastic unit includes a compression spring, which is fixed on the inner wall of the receiving groove;

[0017] A wedge-shaped slider is fixed to the other end of the compression spring. In the unlocked state, the first lock cylinder moves downward and is configured to press the wedge-shaped slider to cause the compression spring to contract. In the locked state, a pair of the wedge-shaped sliders are configured to limit the first lock cylinder.

[0018] Furthermore, it also includes a carriage, which is fixed in the receiving groove and adapted to the inner wall of the receiving groove. The top of the carriage is flush with the top surface of the second corner piece, and the elastic unit is disposed in the carriage.

[0019] Furthermore, four first corner pieces are provided, and the four first corner pieces cooperate to form a rectangular structure. A second corner piece is provided below each first corner piece. A node plate is provided between the four first corner pieces and the four second corner pieces, and the node plate has four through holes.

[0020] Furthermore, module posts are fixed to the mutually distant ends of the first corner piece and the second corner piece.

[0021] Furthermore, module beams are fixed to the side walls of the first corner piece and the second corner piece, respectively.

[0022] Compared with the prior art, the present invention has the following advantages and technical effects:

[0023] The first lock cylinder can be used in conjunction with the elastic unit to connect the first corner piece and the second corner piece without the need to drill holes in the first and second corner pieces. At the same time, the first and second corner pieces can be easily disassembled. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0025] Figure 1 A three-dimensional diagram showing the connection relationship between the first and second corner pieces;

[0026] Figure 2 An exploded view showing the connection relationship between the first and second corner pieces;

[0027] Figure 3 A cross-sectional view of the locked state;

[0028] Figure 4 A cross-sectional view of the unlocked state;

[0029] Figure 5 This is an exploded view of Example 2;

[0030] Among them, 1-first corner piece, 2-second corner piece, 3-first lock cylinder, 301-first column, 302-second column, 303-block, 304-drive groove, 305-connecting rod, 4-elastic unit, 401-compression spring, 402-wedge slider, 403-slide carriage, 5-node plate, 6-through hole, 7-accommodating groove, 8-module column, 9-module beam, 10-sealing plate, 11-second lock cylinder, 12-pass, 13-wedge limiter. Detailed Implementation

[0031] The technical solutions of 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.

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] Reference Figures 1-4 The present invention provides a modular steel structure interlocking connection node, comprising: a first corner piece 1; and a second corner piece 2, arranged below the first corner piece 1.

[0035] The first corner piece 1 and the second corner piece 2 are used together. During construction, the second corner piece 2 is installed first, and then the first corner piece 1 is moved above the second corner piece 2. After the first corner piece 1 and the second corner piece 2 are aligned, the first corner piece 1 is lowered. Under the action of the buckle assembly, the connection and fixation of the first corner piece 1 and the second corner piece 2 can be achieved.

[0036] The latch assembly includes a first lock cylinder 3 disposed on a first corner piece 1, the first lock cylinder 3 being configured to rotate relative to the first corner piece 1, and a pair of elastic units 4 disposed on the end face of a second corner piece 2, the first lock cylinder 3 passing through the pair of elastic units 4 and extending into the second corner piece 2, so that the first corner piece 1 can switch between a locked state and an unlocked state relative to the second corner piece 2; wherein, in the locked state, the pair of elastic units 4 are configured to limit the first lock cylinder 3 so that the first corner piece 1 and the second corner piece 2 are relatively fixed, and in the unlocked state, the first lock cylinder 3 is configured to rotate so that the first lock cylinder 3 can move vertically between the pair of elastic units 4.

[0037] Specifically, the position of the first lock cylinder 3 relative to the first corner piece 1 changes, causing the first corner piece 1 to switch between a locked state and an unlocked state relative to the second corner piece 2. In the locked state, the first lock cylinder 3 extends into the second corner piece 2, and at the same time, the lateral width of the first lock cylinder 3 is greater than the distance between the two elastic units 4, so that when the first lock cylinder 3 has a tendency to move vertically upward, it is blocked by a pair of elastic units 4, thereby locking the first corner piece 1 and the second corner piece 2. In the unlocked state, the first lock cylinder 3 is rotated, and the first lock cylinder 3 moves relative to the first corner piece 1, so that the lateral width of the first lock cylinder 3 is not greater than the distance between the two elastic units 4. When driving the first corner piece 1 to move upward, the first lock cylinder 3 can move between the two elastic units 4, thereby separating from the second corner piece 2.

[0038] In this embodiment, refer to Figure 2 , Figure 3 , Figure 4 It also includes a node plate 5, which is disposed between the first corner piece 1 and the second corner piece 2. The node plate 5 is mounted on the end face of the second corner piece 2 near the first corner piece 1. The node plate 5 has a through hole 6 for the first lock cylinder 3 to pass through.

[0039] Specifically, the node plate 5 is arranged between the first corner piece 1 and the second corner piece 2, and it is used as a horizontal connecting plate. When installing the first corner piece 1, the node plate 5 is first laid on the top of the second corner piece 2. During the downward movement of the first lock cylinder 3, the first lock cylinder 3 passes through the through hole 6 on the node plate 5 and extends into the second corner piece 2, so that the bottom end of the first corner piece 1 is arranged on the top surface of the node plate 5.

[0040] In this embodiment, refer to Figure 3 , Figure 4 The first lock cylinder 3 includes: a first column 301 disposed in the cavity of the first corner piece 1; a second column 302 fixed to one end of the first column 301 near the second corner piece 2, and the second column 302 extending through the end face of the first corner piece 1 and rotatably connected to the first corner piece 1; and a locking block 303 fixed to the other end of the second column 302, and the end away from the second column 302 is an arc-shaped surface. In the locked state, the elastic unit 4 is located between the first column 301 and the locking block 303.

[0041] Specifically, the first corner piece 1 has a cavity inside and a sealing plate 10 is fixed at its bottom end. The first column 301 is located on the side of the sealing plate 10 away from the second corner piece 2. The second column 302 passes through the sealing plate 10. The bottom end of the locking block 303 is an arc-shaped surface. During the downward movement of the locking block 303 driven by the first corner piece 1, the arc-shaped surface of the locking block 303 contacts the top surface of the wedge-shaped slider 402. The locking block 303 squeezes the two wedge-shaped sliders 402 away from each other, so that the locking block 303 passes through the two wedge-shaped sliders 402.

[0042] Furthermore, the second column 302 is connected to the locking block 303 via the connecting rod 305, and the elastic unit 4 is located between the locking block 303 and the second column 302, and the elastic unit 4 corresponds to the connecting rod 305, thereby limiting the locking block 303.

[0043] Among them, the diameters of the first column 301, the second column 302, and the connecting rod 305 decrease sequentially. Taking into account the machining error, the diameter of the second column 302 is slightly smaller than the diameter of the through hole 6, and the diameter of the first column 301 is larger than the diameter of the through hole 6.

[0044] When the drive block 303 rotates, the drive device extends out from the top opening of the first corner piece 1, driving the drive block 303 to rotate relative to the first corner piece 1.

[0045] In this embodiment, refer to Figure 3 , Figure 4 The first column 301 has a drive groove 304 at the end away from the second corner piece 2. The drive groove 304 is configured to connect a drive rod so that the first column 301 rotates relative to the first corner piece 1.

[0046] Specifically, the drive groove 304 is used in conjunction with the drive rod, which is a drive device. By manually holding the drive rod or other structures adapted to the drive groove 304, the first column 301 is driven to rotate under the action of external force. The first column 301 drives the second column 302 and the locking block 303 to rotate.

[0047] The drive groove 304 can be a rectangular or polygonal structure to enable the drive rod to drive the first column 301 to rotate.

[0048] In this embodiment, refer to Figure 2 , Figure 3 , Figure 4 The second corner piece 2 has a receiving groove 7 on its end face near the first corner piece 1. The elastic unit 4 includes: a compression spring 401, fixed on the inner wall of the receiving groove 7; and a wedge slider 402, fixed on the other end of the compression spring 401. In the unlocked state, the first lock cylinder 3 moves downward and is configured to press the wedge slider 402 so that the compression spring 401 contracts. In the locked state, a pair of wedge sliders 402 are configured to limit the first lock cylinder 3.

[0049] Specifically, the end face of the wedge slider 402 near the first corner piece 1 is an inclined surface, and the end of the inclined surface near the center area of ​​the second corner piece 2 is the low end, and the end away from the center area of ​​the second corner piece 2 is the high end. During the downward movement of the locking block 303, the arc-shaped surface of the locking block 303 contacts the inclined surface of the wedge slider 402 and pushes the wedge slider 402 to retract and move. When the locking block 303 continues to move downward and separates from the wedge slider 402, the connecting rod 305 corresponds to the wedge slider 402, and the wedge slider 402 is reset under the action of the compression spring 401, thereby limiting the locking block 303.

[0050] In this embodiment, refer to Figure 2 , Figure 3 , Figure 4 It also includes a slide 403, which is fixed in the receiving groove 7 and adapted to the inner wall of the receiving groove 7. The top of the slide 403 is flush with the top surface of the second corner piece 2, and the elastic unit 4 is disposed in the slide 403.

[0051] Specifically, the outer wall of the slide 403 is fixed to the inner wall of the receiving groove 7. A pair of slides 403 are arranged opposite each other. Each slide 403 is fixed with a compression spring 401. The end of the compression spring 401 is connected to a wedge-shaped slider 402. At the same time, the inner wall of the slide 403 is used to limit the wedge-shaped slider 402 so that the wedge-shaped slider 402 can only move along the extension direction of the inner groove of the slide 403.

[0052] In this embodiment, refer to Figure 1 The first corner piece 1 is provided with four pieces, which together form a rectangular structure. Each first corner piece 1 has a second corner piece 2 below it. A node plate 5 is provided between the four first corner pieces 1 and the four second corner pieces 2. The node plate 5 has four through holes 6.

[0053] Specifically, each connecting node consists of four first corner pieces 1 and four second corner pieces 2, and a node plate 5 is laid on the four second corner pieces 2. The four first corner pieces 1 and four second corner pieces 2 are connected to form an integral structure through a node plate 5.

[0054] In this embodiment, refer to Figure 1 The first corner piece 1 and the second corner piece 2 are respectively fixed with module posts 8 at their far ends.

[0055] In this embodiment, refer to Figure 1 The first corner piece 1 and the second corner piece 2 are respectively fixed with module beams 9 on their side walls.

[0056] Specifically, the module column 8 and the module beam 9 can be fixed to the end faces of the first corner piece 1 and the second corner piece 2 by bolt connection. At the same time, when the first corner piece 1 and the second corner piece 2 are disassembled, the module column 8 on the end face of the first corner piece 1 away from the second corner piece 2 is disassembled to expose the cavity inside the first corner piece 1. Then, the drive rod cooperates with the drive groove 304 to drive the card block 303 to rotate.

[0057] Example 2

[0058] Reference Figure 5 The difference from Embodiment 1 is that a second lock cylinder 11 with a columnar structure is fixed on the end face of the first corner piece 1 near the second corner piece 2. The side wall of the second lock cylinder 11 has two opposite passages 12. A wedge-shaped limiter 13 is fixed in the passage 12. The wedge-shaped slider 402 extends into the passage 12 through the compression spring 401 and contacts and cooperates with the wedge-shaped limiter 13.

[0059] In the above structural configuration, based on actual construction needs, the first lock cylinder 3 is replaced with the second lock cylinder 11. This allows the bottom of the second lock cylinder 11 to compress the wedge-shaped slider 402 during the descent of the first corner piece 1. After the first corner piece 1 is in place, the wedge-shaped slider 402 pops out and enters the passage 12 under the action of the compression spring 401. This ensures that after the first corner piece 1 and the second corner piece 2 are connected and fixed, the wedge-shaped slider 402 cannot be moved out of the passage 12 to separate from the second lock cylinder 11. Therefore, this connection structure is a non-unlockable structure, which further improves the connection strength between the first corner piece 1 and the second corner piece 2.

[0060] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A modular steel structure interlocking connection node, characterized in that: include: First corner piece (1); The second corner piece (2) is arranged below the first corner piece (1); The latch assembly includes a first lock cylinder (3) disposed on the first corner piece (1), the first lock cylinder (3) being configured to rotate relative to the first corner piece (1), and a pair of elastic units (4) disposed on the end face of the second corner piece (2), the first lock cylinder (3) passing between the pair of elastic units (4) and extending into the second corner piece (2) such that the first corner piece (1) switches between a locked state and an unlocked state relative to the second corner piece (2); In the locked state, a pair of elastic units (4) are configured to limit the first lock cylinder (3) so that the first corner piece (1) and the second corner piece (2) are relatively fixed. In the unlocked state, the first lock cylinder (3) is configured to rotate so that the first lock cylinder (3) moves vertically between the pair of elastic units (4). The first lock cylinder (3) includes: a first column (301) disposed in the cavity of the first corner piece (1); The second column (302) is fixed to one end of the first column (301) near the second corner piece (2), and the second column (302) extends through the end face of the first corner piece (1) and is rotatably connected to the first corner piece (1); The locking block (303) is fixed to the other end of the second column (302), and the end away from the second column (302) is an arc-shaped surface. In the locked state, the elastic unit (4) is located between the first column (301) and the locking block (303). The first column (301) has a drive groove (304) at one end away from the second corner piece (2). The drive groove (304) is configured to connect a drive rod so that the first column (301) rotates relative to the first corner piece (1).

2. The modular steel structure interlocking connection node according to claim 1, characterized in that: It also includes a node plate (5), which is disposed between the first corner piece (1) and the second corner piece (2). The node plate (5) is mounted on the end face of the second corner piece (2) near the first corner piece (1). The node plate (5) has a through hole (6) for the first lock cylinder (3) to pass through.

3. The modular steel structure interlocking connection node according to claim 1, characterized in that: The second corner piece (2) has a receiving groove (7) on its end face near the first corner piece (1), and the elastic unit (4) includes a compression spring (401) fixed on the inner wall of the receiving groove (7); A wedge slider (402) is fixed to the other end of the compression spring (401). In the unlocked state, the first lock cylinder (3) moves downward and is configured to press the wedge slider (402) to cause the compression spring (401) to contract. In the locked state, a pair of wedge sliders (402) are configured to limit the first lock cylinder (3).

4. The modular steel structure interlocking connection node according to claim 3, characterized in that: It also includes a slide (403), which is fixed in the receiving groove (7) and adapted to the inner wall of the receiving groove (7). The top of the slide (403) is flush with the top surface of the second corner piece (2), and the elastic unit (4) is disposed in the slide (403).

5. The modular steel structure interlocking connection node according to claim 2, characterized in that: There are four first corner pieces (1), and the four first corner pieces (1) cooperate to form a rectangular structure. Each first corner piece (1) has a second corner piece (2) below it. A node plate (5) is provided between the four first corner pieces (1) and the four second corner pieces (2). The node plate (5) has four through holes (6).

6. The modular steel structure interlocking connection node according to claim 1, characterized in that: The far ends of the first corner piece (1) and the second corner piece (2) are respectively fixed with module posts (8).

7. The modular steel structure interlocking connection node according to claim 1, characterized in that: The sidewalls of the first corner piece (1) and the second corner piece (2) are respectively fixed with module beams (9).

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