Releasable modular self-locking joint and assembly method

Abstract

To provide a self-locking joint and an assembly method, capable of simply realize self-locking connection and release of modules and improve assembly and disassembly efficiency.SOLUTION: A self-locking joint comprises a mutual-fitting box and a self-locking connecting rod. The box has an open top and a T-shaped chute at a bottom. A T-shaped slider is attached to the T-shaped chute. A female-threaded removal hole is drilled into at an end part of the T-shaped slider on a side wall of a joint box. Two self-locking hooks are arranged opposite each other and attached to the box by a connecting shaft. A compressed return spring is fixed between the outside of clamping ends of both self-locking hooks and the side wall of the box. The clamping ends of both self-locking hooks are prevented from over-rotating inward by a restriction shaft. A tension spring is provided between the inside of a free end of the self-locking hook and the T-shaped slider for removal.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the field of building engineering, and in particular to a releasable modular self-locking joint and assembly method. [Background technology]

[0002] Steel modular buildings use modular design and manufacturing processes. A building is divided into several standardized modules that are produced and assembled in a factory and then transported to the construction site for installation. Steel modular buildings offer advantages such as fast construction speed, controllable quality, environmental protection, and energy conservation, making them widely used in modern construction. The manufacturing process for steel modular buildings requires detailed design and calculations to ensure the structural stability and safety of the building. The structural system of steel modular buildings is key to ensuring the stability and safety of the building. Existing modular self-locking and removable joints can only be removed from the inside, making them difficult to remove. When joint removal or repair is required, additional labor and specialized tools are required, which not only increases maintenance costs but also poses challenges to structural removal. Summary of the Invention [Problem to be solved by the invention]

[0003] In view of the problems existing in the prior art, the present invention aims to provide a releasable modular self-locking joint and assembly method that allows for quick installation through self-locking and allows the joint to be attached and detached from the outside of the structure, overcoming the difficulty of removal and repair of existing insertable self-locking joints. [Means for solving the problem]

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] The releasable modular self-locking joint comprises a joint self-locking box and a self-locking connecting rod that fit together, The joint self-locking box includes a joint box, a second fixing plate located inside the joint box, a first fixing plate, a connecting shaft, a regulating shaft, a self-locking hook, a return spring, a T-shaped slider, and a tension spring, the joint box has an open top and a T-shaped chute at the bottom, a T-shaped slide attached to the T-shaped chute, a removal hole with an internal thread formed in a side wall of the joint box at a position corresponding to the end of the T-shaped slide, a second fixed plate and a first fixed plate disposed opposite each other and fixed to the inner wall of the joint box with bolts, two self-locking hooks disposed opposite each other and attached between the second fixed plate and the first fixed plate with connecting shafts, a return spring in a compressed state is fixed between the outer sides of the clamping ends of both self-locking hooks and the side wall of the joint box, a restricting shaft is provided on the second fixed plate and / or the first fixed plate to restrict the clamping ends of both self-locking hooks from over-rotating inward, a sear is provided on the inner side of the free end of each self-locking hook and on the T-shaped slider, and both ends of two tension springs are fixed to the free ends of the self-locking hooks and the sear of the T-shaped slider, respectively; The self-locking connecting rod has a tapered insertion portion and a locking groove that receives the self-locking hook.

[0006] Furthermore, the clamping end of the self-locking hook has a beveled end having a hook-like structure, and the beveled end fits into the tapered surface of the tapered insertion portion.

[0007] Furthermore, the bolt is a screw plug.

[0008] Furthermore, a screw plug is attached to the removal hole.

[0009] Furthermore, the center of the end of the screw plug has a hexagonal hole.

[0010] Furthermore, both the connecting shaft and the restricting shaft are provided on the first fixed plate, and the second fixed plate is provided with a connecting hole through which the connecting shaft can pass and a restricting hole through which the restricting shaft can pass.

[0011] Furthermore, both ends of the return spring are welded to the outside of the self-locking hook and the inside of the side wall of the joint box, respectively.

[0012] The assembly method of the releasable modular self-locking joint includes the steps of: inserting the through holes of the two self-locking hooks into the connecting shaft of the first fixed plate, and passing the connecting shaft and the regulating shaft of the first fixed plate through the connecting hole and the regulating hole of the second fixed plate, respectively, to complete the assembly of the second fixed plate and the first fixed plate; connecting one end of two tension springs to the shackles of the T-shaped slider, and the other end to the shackles of the self-locking hooks, and connecting both self-locking hooks to the T-shaped slider, respectively; further comprising the steps of: placing the assembled first and second fixing plates, the self-locking hooks, and the T-shaped slider into a joint box; inserting the T-shaped slider into a T-shaped chute of the joint box; and then fastening the first and second fixing plates and the joint box together with screw plugs; The method further includes the steps of welding one end of each of the two return springs to the outside of the upper part of the self-locking hook and the other end to the inner wall of the joint box, and finally sealing the pre-made removal holes with screw plugs to complete the assembly of the joint self-locking box. [Effects of the Invention]

[0013] Compared with the prior art, the present invention has the following significant advantages:

[0014] The releasable modular self-locking joint of the present invention can realize an insert-type self-locking connection of the modular joint, no connecting tools are required on site, the modular units can be assembled quickly, and the assembly efficiency of steel modular buildings is greatly improved.

[0015] The releasable modular self-locking joint of the present invention is simple in both structural design and processing, which reduces the cost and time of project pre-preparation.

[0016] All components of the present invention can be manufactured and completed in the factory and assembled on site. The assembly process is very simple, which effectively simplifies the construction process, improves on-site construction efficiency, and saves construction time.

[0017] The releasable modular self-locking joints of the present invention provide greater flexibility and sustainability to modular construction due to their conveniently removable nature, allowing the construction to be removed from the outside and reducing construction requirements. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic diagram of a releasable modular self-locking joint according to the present invention; FIG. [Figure 2] FIG. 1 is a schematic diagram illustrating the configuration of a joint box according to the present invention. [Figure 3] 4 is a structural schematic diagram of a second fixing plate according to the present invention. FIG. [Figure 4] 3 is a structural schematic diagram of a first fixing plate according to the present invention; FIG. [Figure 5] 1 is a structural schematic diagram of a self-locking hook according to the present invention; FIG. [Figure 6] 1 is a structural schematic diagram of a T-shaped slider according to the present invention; [Figure 7] FIG. 2 is a schematic diagram illustrating the configuration of a return spring according to the present invention. [Figure 8] 1 is a structural schematic diagram of a tension spring according to the present invention; [Figure 9] 1 is a structural schematic diagram of a screw plug according to the present invention; [Figure 10] 1 is a structural schematic diagram of a self-locking connecting rod according to the present invention; FIG. [Figure 11] 1 is a schematic diagram of a configuration of a removal rod according to the present invention. [Figure 12]1 is a schematic diagram of the release and removal process of a releasable modular self-locking joint according to the present invention; FIG. [Figure 13] 1 is a schematic diagram of the structure of a combination board according to the present invention; [Figure 14] 1 is a structural schematic diagram of a prefabricated building according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] The technical solution of the present invention will be further described below with reference to the drawings.

[0020] As shown in FIG. 1, the releasable modular self-locking joint according to the present invention comprises a joint self-locking box and a self-locking connecting rod 10 that fit together to realize an assembly connection of a modular building.

[0021] The joint self-locking box includes a joint box 1, a first fixed plate 3, a second fixed plate 2, a self-locking hook 4, a T-shaped slider 5, a return spring 6, and a tension spring 7. As shown in Figure 2, the joint box has an upward-opening structure, and is provided with a T-shaped chute 102 at the bottom, with a removal hole 101 opened at a position corresponding to the position of the T-shaped chute 102 under the side wall of the joint box 1. Two first screw plug holes 103 that connect and fix the first fixed plate 3 and the second fixed plate 2 are opened in the two side walls adjacent to the side wall with the removal hole 101 opened.

[0022] As shown in Fig. 4, the first fixing plate 3 is a fixing plate that matches the shape of the joint box in cross section, and is provided with two connecting shafts 301 that pass through the self-locking hooks 4, two regulating shafts 302 that regulate the rotation direction of the self-locking hooks, and a second screw plug hole 303 that connects the first fixing plate 3 to the joint box 1. As shown in Fig. 3, the second fixing plate 2 is also a fixing plate that matches the shape of the joint box in cross section, and is provided with two connecting holes 201 through which the connecting shafts 301 pass, two regulating holes 202 through which the regulating shafts 302 pass, and a third screw plug hole 203 that connects the second fixing plate 2 to the joint box 1.

[0023] As shown in Figure 5, the self-locking hook 4 has a hook structure 401 located at the clamping end, a through hole 402, and a first sear 403 located at the free end, and two of the self-locking hooks 4 are provided symmetrically in the joint box 1, and the self-locking hooks 4 are fixed between the first fixed plate 3 and the second fixed plate 2, and the through hole 402 is attached to the connecting shaft 301 so that the self-locking hooks 4 can rotate around the connecting shaft 301. As shown in Figure 7, one end of the return spring 6 is welded to the outer upper part of the self-locking hook 4, and the other end is welded to the inner wall of the joint box. The restricting shaft 302 is located inward from the clamping ends of the self-locking hooks 4 so as to restrict the clamping ends of the two self-locking hooks 4 from over-rotating inward.

[0024] As shown in Fig. 6, the T-shaped slider 5 is provided with second sarves 501 on both the left and right sides, and the T-shaped slider 5 is housed in a T-shaped chute 102 in the joint box, and the second sarves 501 of the T-shaped slider 5 are connected to a tension spring 7. As shown in Fig. 8, one end of the tension spring 7 is connected to the first sarve 403 of the self-locking hook 4, and the other end is connected to the second sarve 501 of the T-shaped slider 5.

[0025] A first fixing plate 3 is connected to one side of the joint box 1, and screw plugs pass through the first screw plug hole 103 and the second screw plug hole 303, thereby connecting and fixing the first fixing plate 3 to the joint box 1. A second fixing plate 2 is connected to the inner wall on the opposite side of the joint box 1, and screw plugs pass through the first screw plug hole 103 and the third screw plug hole 203, thereby connecting and fixing the second fixing plate 2 to the joint box 1. As shown in Figure 9, the screw plug has a hexagonal hole 801 that allows for easy attachment and detachment. A screw plug that seals the joint box is also attached to the removal hole 101.

[0026] As shown in FIG. 10, the self-locking connecting rod 10 includes a top plate, a tapered insertion portion 1001 located on the underside of the top plate, and a locking groove 1002 for accommodating a self-locking hook. The tapered insertion portion 1001 has a symmetrical structure and two slopes, and the tapered insertion portion fits over the hook structure 401.

[0027] The assembly method of the releasable modular self-locking joint of the present invention includes inserting the through holes 402 of the two self-locking hooks 4 onto the connecting shafts 301 of the first fixed plate 3, inserting the connecting shafts 301 and the regulating shafts 302 of the first fixed plate 3 into the connecting holes 201 and the regulating holes 202 of the second fixed plate 2, respectively, to complete the assembly of the second fixed plate 2 and the first fixed plate 3, connecting one end of each of the two tension springs 7 to the second sear 501 of the T-shaped slider, and connecting the other end to the first sear 403 of the self-locking hook, respectively, to connect the two self-locking hooks to the T-shaped slider, and then The assembled first fixing plate 3, second fixing plate 2, self-locking hook 4, and T-shaped slider 5 are placed into joint box 1, and the T-shaped slider 5 is placed into the T-shaped chute 102 of the joint box. Next, the first fixing plate 3 and second fixing plate 2 are fixed to the joint box 1 with screw plugs. Furthermore, one end of each of the two return springs 6 is welded to the outside of the upper part of the self-locking hook 4, and the other end is welded to the inner wall of the joint box 1, and finally the pre-installed removal holes are sealed with screw plugs to complete the assembly of the joint self-locking box.

[0028] The self-locking process and release / removal method of the releasable modular self-locking joint are as follows:

[0029] The self-locking connecting rod 10 is inserted into the joint self-locking box, and the slope of the tapered insertion section 1001 comes into contact with the slope of the hook structure 401. The self-locking connecting rod 10 presses against the self-locking hooks 4 on both sides, causing them to rotate around the connecting shaft 301. The restricting shaft 302 acts to restrict the self-locking hooks 4 to rotate outward, compressing the return spring 6. When the tapered insertion section 1001 is fully inserted, the return spring 6 springs back, pressing against the self-locking hooks 4 and causing them to rotate inward around the connecting shaft 301. The hook structure 401 is inserted into the locking groove 1002, and the hook structure 401 and the locking groove 1002 come into contact with each other, achieving a self-locking connection.

[0030] To unlock and remove the modules, first use a hex driver to loosen and remove the screw plug located in the joint box removal hole. Then, as shown in Figure 11, use a removal rod 11 with a male thread on one end to align the removal rod 11 with the removal hole 101 and rotate it to screw it into the joint box 1. This will push the T-shaped slider 5 away from its original position and simultaneously pull the tension spring 7, causing the free end of the self-locking hook 4 to rotate inward and the clamping end of the self-locking hook 4 to rotate outward, which means that the self-locking hook is now in the open position. As shown in Figure 12, the self-locking device is released and the two connected modules can be removed.

[0031] The prefabricated building using the releasable modular self-locking joint of the present invention comprises the releasable modular self-locking joint, an upper modular steel column 13, and a lower modular steel column 14, the self-locking connecting rod 10 of the releasable modular self-locking joint being fixed to the lower end of the upper modular steel column 13 to form an upper joint steel structural module, the joint self-locking box being installed in the lower modular steel column 14 to form a lower joint steel structural module, and the self-locking connecting rod 10 of the upper joint steel structural module being inserted into the joint self-locking box of the lower joint steel structural module to achieve a self-locking connection with the lower joint steel structural module.

[0032] When multiple modular upper steel columns 13 and multiple modular lower steel columns 14 need to be assembled, a combination plate 12 must also be used. The combination plate 12 has N insertion holes 1201, where N is equal to the number of modular upper steel columns 13 and modular lower steel columns 14, as shown in Figure 13. The multiple self-locking connecting rods 10 of the upper joint steel structural module are inserted into the insertion holes 1201 of the combination plate 12 and then inserted into the joint self-locking boxes of the lower joint steel structural module to achieve a self-locking connection, and as shown in Figure 14, the self-locking connection between the upper joint steel structural module and the lower joint steel structural module is achieved.

[0033] When steel structural modules are connected using the releasable modular self-locking joint of the present invention, self-locking can be achieved, reducing on-site work and improving efficiency. When the structure needs to be removed, simply loosen and remove the screw plugs on both sides of the joint box 1 with a hex driver, insert the removal rod 11 into the joint box removal hole 101, and forcefully press the T-shaped slider 5 to open the self-locking device, allowing removal and repair without destroying the original structure, and the removed module can be reused.

[0034] Although the preferred embodiments of the present invention have been described in detail above, the design concept of the present invention is not limited thereto. Various equivalent transformations can be made to the technical concept of the present invention within the scope of the technical concept of the present invention, and all of these equivalent transformations fall within the protection scope of the present invention. [Explanation of symbols]

[0035] 1 joint box 2 Second fixing plate 3 1st fixing plate 4 Self-locking hooks 5 T-shaped slider 6 Return spring 7. Tension spring 8 screw cap 10 Self-locking connecting rod 11 Removal rod 12 Combination board 13 Modular steel columns 14 Modular lower steel columns 101 Removal hole 102 T-shaped chute 103 First screw plug hole 201 Connection hole 202 Restriction hole 203 Third screw plug hole 301 Connecting shaft 302 Regulatory Axis 303 Second screw plug hole 401 Hook structure 402 Through hole 403 1st Gyakuhaku 501 2nd Gyakuhaku 1001 Tapered insertion part 1002 Locking groove 1101 Male thread 1201 Insertion hole 801 Hexagonal hole

Claims

1. A joint self-locking box and a self-locking connecting rod (10) that fit together, The joint self-locking box includes a joint box (1), a second fixed plate (2) located inside the joint box (1), a first fixed plate (3), a connecting shaft (301), a regulating shaft (302), a self-locking hook (4), a return spring (6), a T-shaped slider (5), and a tension spring (7). The joint box (1) has an open top and a T-shaped chute (102) at the bottom. The T-shaped slider (5) is attached to the T-shaped chute (102). A female-threaded removal hole is provided on the side wall of the joint box (1) at a position corresponding to the end of the T-shaped slider (5). The second fixing plate (2) and the first fixing plate (3) are arranged opposite each other and fixed to the inner wall of the joint box (1) via bolts. Two self-locking hooks (4) are arranged opposite each other and are connected between the second fixing plate (2) and the first fixing plate (3) via a connecting shaft (301). a return spring (7) in a compressed state is fixed between the outside of the clamping ends of both the self-locking hooks (4) and the side wall of the joint box (1); a restricting shaft (302) is provided on the second fixed plate (2) and / or the first fixed plate (3) to restrict the clamping ends of both the self-locking hooks (4) from over-rotating inward; a corresponding sear is provided on the inside of the free end of each of the self-locking hooks (4) and on the T-shaped slider (5); and both ends of the two tension springs (7) are fixed to the free end of each of the self-locking hooks (4) and the sear of the T-shaped slider (5), respectively; The self-locking connecting rod (10) has a tapered insertion portion (1001) and a locking groove (1002) for receiving a self-locking hook; The clamping end of the self-locking hook (4) has a hook-shaped structure and is sloped, and the slope fits into the tapered surface of the tapered insertion part (1001); The connecting shaft (301) and the regulating shaft (302) are both provided on the first fixed plate (3), and the second fixed plate (2) is provided with a connecting hole (201) through which the connecting shaft can pass and a regulating hole (202) through which the regulating shaft can pass; A releasable modular self-locking joint, characterized in that both ends of the return spring (6) are welded to the outside of the self-locking hook and to the inside of the side wall of the joint box (1).

2. 2. A releasable modular self-locking joint according to claim 1, characterized in that the bolts are threaded plugs.

3. 2. A releasable modular self-locking joint according to claim 1, characterized in that said withdrawal holes are fitted with threaded plugs.

4. 3. A releasable modular self-locking joint according to claim 2, characterized in that the centre of the end of the screw plug has a hexagonal hole.

5. 4. A releasable modular self-locking joint according to claim 3, characterized in that the centre of the end of the screw plug has a hexagonal hole.

6. the through holes (402) of the two self-locking hooks (4) are fitted onto the connecting shafts (301) of the first fixed plate (3), and the connecting shafts (301) and the regulating shafts (302) of the first fixed plate (3) are respectively passed through the connecting holes (201) and the regulating holes (202) of the second fixed plate (2), thereby completing the assembly of the second fixed plate (2) and the first fixed plate (3); and the steps of connecting one end of each of the two tension springs (7) to the second spur (501) of the T-shaped slider and the other end to the first spur (403) of the self-locking hooks, thereby connecting the two self-locking hooks to the T-shaped slider respectively. Further, the assembled first fixing plate (3), second fixing plate (2), self-locking hook (4), and T-shaped slider (5) are placed in the joint box (1), and the T-shaped slider (5) is placed in the T-shaped chute (102) of the joint box. Then, the first fixing plate (3), second fixing plate (2) and joint box (1) are fastened together with screw plugs. The method for assembling a releasable modular self-locking joint according to any one of claims 1 to 5, further comprising the steps of welding one end of each of the two return springs (6) to the outer upper part of the self-locking hook (4) and the other end to the inner wall of the joint box (1), respectively, and finally sealing the pre-made removal holes with screw plugs to complete the assembly of the joint self-locking box.

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