Bolt self-locking type connecting joint of modular building structure

Abstract

The invention relates to a modular building structure bolt self-locking type connecting joint which comprises an upper connecting piece, a lower connecting piece, a force transmission connecting piece and a locking mechanism. The bottom of the upper connecting piece is provided with a first slot extending in the first horizontal direction. A second slot extending in the first horizontal direction is formed in the top of the lower connecting piece. After the upper portion of the force transmission connecting piece can be movably inserted into the first inserting groove in the first horizontal direction and the lower portion of the force transmission connecting piece can be movably inserted into the second inserting groove in the first horizontal direction, the locking mechanism can be connected with the upper connecting piece and the lower connecting piece and push the force transmission connecting piece in the first horizontal direction. The upper portion of the force transmission connecting piece abuts against the side wall of the first end, in the first horizontal direction, of the first inserting groove, and the lower portion of the force transmission connecting piece abuts against the side wall of the first end, in the first horizontal direction, of the second inserting groove. Horizontal constraint, vertical constraint and bending moment constraint of a modular building structure connecting joint can be achieved, the overall mechanical property of the structure is improved, installation is faster, and construction errors are effectively controlled.

Description

Technical Field

[0001] The invention relates to the technical field of modular building, and in particular to a modular building structure latch self-locking connection node. Background Art

[0002] Modular steel structure buildings have the advantages of short construction period, high building quality, green and low-carbon environmental protection, etc. Modular steel structure needs to use connection nodes to splice and combine prefabricated modules to form a complete modular building. Fast, universal, safe and reliable connection nodes between modules are the key to fully utilizing the advantages of modular steel structure buildings in rapid construction and ensuring the overall stress performance of modular steel structure.

[0003] The connection nodes are basically located at the four corners of the rectangular module. The existing connection methods for modular building structures mainly include the following two methods:

[0004] (1) Grouting connection nodes: The adjacent modules are connected by specific components and then concrete is poured between the adjacent modules. This connection method requires a cavity for pouring concrete at the connection of the modules, which will result in a larger volume at the connection. At the same time, this connection method also requires on-site grouting and waiting for the concrete to solidify and cure. The on-site construction is complicated and the construction efficiency is low.

[0005] (2) Bolt connection nodes: threaded holes are opened at the connection of the modules, and screws are inserted between two adjacent modules. However, this connection method requires high processing accuracy of the threaded holes so that the two adjacent modules can be installed in position. At the same time, opening holes on the modules will weaken the strength of the modules and the connection strength between the modules. In addition, a large installation space must be reserved during installation, which makes it difficult to use in places with limited construction space.

[0006] Therefore, there is an urgent need for a connection node that is easy to install on site, has low processing accuracy requirements and does not affect the strength of the module. Summary of the invention

[0007] 1. Technical issues to be resolved

[0008] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a modular building structure latch self-locking connection node, which provides a connection node that can simultaneously achieve small size, quick installation, effective control of construction errors, low processing accuracy requirements and no impact on module strength.

[0009] (II) Technical solution

[0010] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0011] The embodiment of the present invention provides a modular building structure latch self-locking connection node, including an upper connection piece, a lower connection piece, a force transmission connection piece and a locking mechanism;

[0012] The upper connecting member can be fixed to the bottom corner of the upper module; the bottom of the upper connecting member is provided with a first slot extending along a first horizontal direction;

[0013] The lower connecting member can be fixed to the top corner of the lower module; the top of the lower connecting member is provided with a second slot extending along the first horizontal direction;

[0014] The force-transmitting connection is oriented vertically;

[0015] After the upper part of the force transmission connection member can be movably inserted into the first slot along the first horizontal direction and the lower part can be movably inserted into the second slot along the first horizontal direction, the locking mechanism can connect the upper connection member and the lower connection member and push the force transmission connection member along the first horizontal direction to press the upper peripheral wall of the force transmission connection member against the side wall of the first end of the first slot in the first horizontal direction and the lower peripheral wall of the force transmission connection member against the side wall of the first end of the second slot in the first horizontal direction.

[0016] According to the present invention, a first limiting groove facing the second end of the first slot is formed at an upper portion of a side wall of the first end of the first slot in the first horizontal direction;

[0017] A second limiting groove facing the second end of the second slot is formed at a lower portion of a side wall of the first end of the second slot in the first horizontal direction;

[0018] The force transmission connecting member comprises a main body, a first limit platform formed by horizontally extending outward from the upper end of the main body, and a second limit platform formed by horizontally extending outward from the lower end of the main body;

[0019] When the first limit platform and the upper part of the main body are inserted into the first slot, and the lower part of the main body and the second limit platform are inserted into the second slot, the locking mechanism can push the force transmission connecting member to move along the first horizontal direction, so that the peripheral wall of the first limit platform presses against the peripheral wall of the first limit groove, the peripheral wall of the main body presses against the peripheral wall of the second limit groove, and the peripheral wall of the second limit platform presses against the peripheral wall of the second limit groove, the bottom wall of the first limit groove can limit the bottom of the first limit platform, and the top wall of the second limit groove can limit the top of the second limit platform; the locking mechanism can also connect the upper connecting member and the lower connecting member.

[0020] According to the present invention, the locking mechanism comprises a tenon sleeve, an elastic member and a connecting assembly;

[0021] The tenon sleeve is movable in the first horizontal direction and is located in the second slot; the elastic member extends in the first horizontal direction, and two ends of the elastic member are respectively connected to the tenon sleeve and the side wall of the second end of the second slot; the elastic member is switchable between a contracted state and a rebound state;

[0022] When the elastic member is in a contracted state, the main body and the second limiting platform can be inserted into the second slot from between the first end of the second slot and the tenon sleeve;

[0023] When the elastic member is in a rebound state, it can push the tenon sleeve to move along the first horizontal direction toward the first end of the second slot, so that the tenon sleeve can push the lower part of the main body to press against the side wall of the first end of the second slot and push the second limit platform to press against the surrounding wall of the second limit slot. After that, the connecting component can be inserted into the first slot and can move along the first horizontal direction toward the first end of the first slot to push the first limit platform to press against the surrounding wall of the first limit slot; the connecting component can also connect the upper connecting member and the lower connecting member.

[0024] According to the present invention, the locking mechanism further comprises a baffle, which can be vertically moved to be inserted into the second slot in a locked state and an unlocked state;

[0025] When the baffle is in a locked state, the baffle presses against a side of the tenon sleeve facing the first end of the second slot, and the elastic member is in a contracted state;

[0026] When the lower portion of the force transmission connection member is inserted into the second slot, the force transmission connection member can push the baffle plate to move downward to a position below the tenon sleeve, so that the baffle plate is in an unlocked state and the elastic member is in a rebound state.

[0027] According to the present invention,

[0028] The main body is a cylinder, the second limiting platform is a truncated platform, and the main body and the second limiting platform are coaxial;

[0029] A third limiting groove is further provided on the side wall of the first end of the second slot and is located above the second limiting groove; the second limiting groove and the third limiting groove are coaxial and are both axially vertical arc grooves, and the inner diameter of the second limiting groove is greater than the inner diameter of the third limiting groove;

[0030] The peripheral wall of the main body can press against the peripheral wall of the third limiting groove, and the second limiting platform can press against the peripheral wall of the second limiting groove.

[0031] According to the present invention, the first arc groove and the second arc groove are formed from top to bottom on one side of the tenon sleeve facing the first end of the second slot, and the first arc groove and the second arc groove are coaxial and axially vertical;

[0032] When the tenon sleeve pushes the force transmission connector to move toward the first end of the second slot along the first horizontal direction, the first arc groove can hug the lower peripheral wall of the main body, and the second arc groove can hug the peripheral wall of the second limit platform.

[0033] According to the present invention, the lower peripheral wall of the main body and the peripheral wall of the third limiting groove are both provided with concave-convex structures that enable the two to be plugged into each other along the first horizontal direction.

[0034] According to the present invention, the connection assembly includes a pusher, a plug plate and a fastener;

[0035] The pushing member is extended along the first horizontal direction, and the first end of the pushing member can be inserted into the first slot and can move toward the first end of the first slot along the first horizontal direction to push the first limiting platform to press against the peripheral wall of the first limiting groove; the second end of the pushing member can protrude outside the upper connecting member and the lower connecting member and open a vertically oriented socket;

[0036] The socket is used for inserting the plug board, and the plug board can abut against the side walls of the upper connecting member and the lower connecting member; the fasteners can be passed between the plug board and the upper connecting member and between the plug board and the lower connecting member to connect the upper connecting member and the lower connecting member.

[0037] According to the present invention, the cross section of the first slot is T-shaped, and the second end of the first slot is open to form a first notch;

[0038] The first limit platform is a cuboid coaxial with the main body, the longitudinal cross-section of the combination of the first limit platform and the main body is a T-shape that fits in the first slot, the first limit platform and the upper part of the main body can be inserted into the first slot through the first notch, and the bottom of the first limit platform can be hung in the first slot;

[0039] A horizontal slot extending along the first horizontal direction is further provided on the top of the lower connecting member, the horizontal slot is located above the second slot and vertically connected to each other, and the width of the horizontal slot is greater than the width of the second slot; the first end of the horizontal slot in the first horizontal direction is closed, and the second end is open to form a second notch;

[0040] The pusher includes, from top to bottom, a first plate, a second plate and a third plate, all extending along the first horizontal direction;

[0041] The combined cross-section of the first plate and the second plate is in a T-shape that fits in the first slot; the first end of the first plate in the first horizontal direction is a vertical plane, and the first end of the third plate in the first horizontal direction or the first ends of the second plate and the third plate in the first horizontal direction are provided with an axially vertical third arc groove; the second end of at least one of the first plate, the second plate and the third plate is provided with the vertically oriented socket;

[0042] When the tenon sleeve pushes the lower part of the main body along the first horizontal direction to press against the peripheral wall of the second limiting groove and the second limiting platform presses against the peripheral wall of the second limiting groove, the first plate and the second plate can be inserted into the first slot through the first notch and the third plate can be inserted into the horizontal slot through the second notch, the first plate can fit and press the first limiting platform against the peripheral wall of the first limiting groove, and the third arc groove can hug the peripheral wall of the main body and press the main body against the peripheral wall of the third limiting groove;

[0043] The socket protrudes from the upper connecting member and the lower connecting member.

[0044] (III) Beneficial effects

[0045] The beneficial effects of the modular building structure self-locking connection node provided by the present invention are:

[0046] It can realize horizontal constraint, vertical constraint and moment constraint: the horizontal and vertical forces carried by the upper connector and / or the lower connector can be transmitted by the upper part of the force transmission connector and the side wall of the first end of the first slot, the lower part of the force transmission connector and the side wall of the first end of the second slot, and the mutual pressure between the locking mechanism and the force transmission connector, so as to avoid the upper connector and the lower connector from being separated in the horizontal and vertical directions. Since the upper connector and the lower connector realize the constraint in the horizontal and vertical directions through the locking of the force transmission connector and the locking mechanism, the upper connector and the lower connector can not have relative displacement or the displacement is small before being destroyed. Therefore, this connection node has good rigidity and can be regarded as a rigid connection in an ideal state, that is, it can bear a large moment load.

[0047] Improved the overall mechanical properties of the modular building structure: The entire connection node can disperse the overall force from the center to the upper and lower connectors, avoiding deformation or bending caused by concentrated force at the node connection of the upper and lower modules, and improving the overall mechanical properties of the modular building structure.

[0048] Quick installation, saving time and effort: When processing the upper module and the lower module, the upper connecting piece can be fixed to the bottom corner of the upper module in advance, and the lower connecting piece can be fixed to the top corner of the lower module. When connecting on site, it is only necessary to install the force transmission connecting piece and the locking mechanism, and complete the assembly of the upper connecting piece and the lower connecting piece, thereby realizing the assembly of the upper module and the lower module. The installation process is simple and quick, and there is no need to wait for the concrete to solidify and cure, saving time and effort.

[0049] It can effectively control construction errors, and has low processing and installation precision requirements: since the locking mechanism and the force transmission connector can move relative to the upper connector and the lower connector along the first horizontal direction, when the upper connector and the lower connector are assembled on site with a horizontal offset, the position of the force transmission connector in the first horizontal direction can be adjusted by the locking mechanism, so that the upper part of the force transmission connector can be pressed against the side wall of the first end of the first slot and the lower part of the force transmission connector can be pressed against the side wall of the first end of the second slot, which can effectively control construction errors. Therefore, this connection node has low requirements for the processing precision of each component and the on-site assembly precision of the node, and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is an assembly perspective view of the connection node of the present invention;

[0051] Figure 2 for Figure 1 Schematic diagram of the decomposition of

[0052] Figure 3 for Figure 2 perspective drawing;

[0053] Figure 4 for Figure 1 A cross-sectional view of

[0054] Figure 5 is a cross-sectional view of the upper connecting member (the baffle is not shown);

[0055] Figure 6 is a cross-sectional view of the upper connecting member (showing the baffle);

[0056] Figure 7 is a top view of the upper connecting member;

[0057] Figure 8 It is a position relationship diagram when the baffle plate is pressed against the tenon sleeve;

[0058] Fig. 9 It is a cross-sectional view of the tenon sleeve;

[0059] Fig.10 A perspective view of a pusher.

[0060] [Description of Reference Numerals]

[0061] 1: upper connecting member; 11: first slot; 12: first notch; 13: first threaded hole; 14: first limiting groove;

[0062] 2: lower connecting member; 21: second slot; 22: limiting slot; 221: third limiting slot; 222: second limiting slot; 23: horizontal slot; 24: second notch; 25: sliding slot; 26: second threaded hole;

[0063] 3: force transmission connector; 31: second limit platform; 32: main body; 33: first limit platform;

[0064] 4: locking mechanism; 41: mortise; 411: first arc groove; 412: second arc groove; 42: baffle; 43: connecting assembly; 431: pusher; 4311: first plate; 4312: second plate; 4313: third plate; 4314: socket; 4315: third arc groove; 432: plug plate; 433: fastener;

[0065] A: First horizontal direction. DETAILED DESCRIPTION

[0066] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific embodiments. Figure 1 The orientation is used as a reference.

[0067] See also Figure 1-10 A modular building structure self-locking latch connection node proposed in an embodiment of the present invention includes an upper connecting member 1, a lower connecting member 2, a force transmission connecting member 3 and a locking mechanism 4.

[0068] The upper connecting member 1 can be fixed to the bottom corner of the upper module. The bottom of the upper connecting member 1 is provided with a first slot 11 extending along the first horizontal direction A. The lower connecting member 2 can be fixed to the top corner of the lower module. The top of the lower connecting member 2 is provided with a second slot 21 extending along the first horizontal direction A. The force transmission connecting member 3 is oriented vertically.

[0069] After the upper part of the force transmission connecting member 3 can be movably inserted into the first slot 11 along the first horizontal direction A, and the lower part can be movably inserted into the second slot 21 along the first horizontal direction A, the locking mechanism 4 can connect the upper connecting member 1 and the lower connecting member 2, and push the force transmission connecting member 3 along the first horizontal direction A to press the upper peripheral wall of the force transmission connecting member 3 against the side wall of the first end of the first slot 11 in the first horizontal direction A and the lower peripheral wall of the force transmission connecting member 3 against the side wall of the first end of the second slot 21 in the first horizontal direction A.

[0070] Therefore, this connection node has the following effects:

[0071] It can realize horizontal constraint, vertical constraint and moment constraint: the horizontal and vertical forces carried by the upper connector 1 and / or the lower connector 2 can be transmitted by the upper part of the force transmission connector 3 and the side wall of the first end of the first slot 11, the lower part of the force transmission connector 3 and the side wall of the first end of the second slot 21, and the mutual pressure between the locking mechanism 4 and the force transmission connector 3, so as to avoid the horizontal and vertical separation between the upper connector 1 and the lower connector 2. Since the upper connector 1 and the lower connector 2 realize the horizontal and vertical constraints through the locking of the force transmission connector 3 and the locking mechanism 4, the upper connector 1 and the lower connector 2 can not have relative displacement or the displacement is small before being destroyed. Therefore, this connection node has good rigidity and can be regarded as a rigid connection in an ideal state, that is, it can bear a large moment load.

[0072] The overall mechanical properties of the modular building structure are improved: the entire connection node can disperse the overall force from the center to the upper connection member 1 and the lower connection member 2, avoiding deformation or bending caused by concentrated force at the node connection of the upper and lower modules, thereby improving the overall mechanical properties of the modular building structure.

[0073] Quick installation, saving time and effort: When processing the upper module and the lower module, the upper connecting piece 1 can be fixed to the bottom corner of the upper module in advance, and the lower connecting piece 2 can be fixed to the top corner of the lower module. When connecting on site, it is only necessary to install the force transmission connecting piece 3 and the locking mechanism 4, and complete the assembly of the upper connecting piece 1 and the lower connecting piece 2, so as to realize the assembly of the upper module and the lower module. The installation process is simple and quick, and there is no need to wait for the concrete to solidify and cure, which saves time and effort.

[0074] It can effectively control construction errors, and the requirements for processing and installation accuracy are relatively low: since the locking mechanism 4 and the force transmission connector 3 can move relative to the upper connector 1 and the lower connector 2 along the first horizontal direction A, when the upper connector 1 and the lower connector 2 are assembled on site and there is a horizontal offset, the position of the force transmission connector 3 in the first horizontal direction A can be adjusted by the locking mechanism 4, so that the upper part of the force transmission connector 3 can be pressed against the side wall of the first end of the first slot 11 and the lower part of the force transmission connector 3 can be pressed against the side wall of the first end of the second slot 21, which can effectively control construction errors. Therefore, this connection node has low requirements for the processing accuracy of each component and the on-site assembly accuracy of the node, and is easy to assemble.

[0075] Furthermore, in order to further improve the vertical locking force of the force transmission connecting member 3 on the upper connecting member 1 and the lower connecting member 2:

[0076] A first limiting groove 14 is formed at an upper portion of a side wall of a first end of the first insertion slot 11 in the first horizontal direction A and faces the second end of the first insertion slot 11 .

[0077] A second limiting groove 222 facing the second end of the second slot 21 is defined at a lower portion of a side wall of the first end of the second slot 21 in the first horizontal direction A. The second limiting groove 222 faces the second end of the second slot 21 .

[0078] The force transmission connecting member 3 includes a main body 32 , a first limiting platform 33 formed by horizontally extending outward from the upper end of the main body 32 , and a second limiting platform 31 formed by horizontally extending outward from the lower end of the main body 32 .

[0079] When the first limiting platform 33 and the upper part of the main body 32 are inserted into the first slot 11, and the lower part of the main body 32 and the second limiting platform 31 are inserted into the second slot 21, the locking mechanism 4 can push the force transmission connector 3 to move along the first horizontal direction A, so that the peripheral wall of the first limiting platform 33 presses against the peripheral wall of the first limiting groove 14, the peripheral wall of the main body 32 presses against the peripheral wall of the second limiting groove 222, and the peripheral wall of the second limiting platform 31 presses against the peripheral wall of the second limiting groove 222, the bottom wall of the first limiting groove 14 can limit the bottom of the first limiting platform 33, and the top wall of the second limiting groove 222 can limit the top of the second limiting platform 31. The locking mechanism 4 can also connect the upper connector 1 and the lower connector 2.

[0080] Therefore, when the upper connecting member 1 and the lower connecting member 2 are assembled, the bottom wall of the first limiting groove 14 can limit the bottom of the first limiting platform 33, and the top wall of the second limiting groove 222 can limit the top of the second limiting platform 31 when the upper connecting member 1 and / or the lower connecting member 2 bear tension in the vertical direction, so as to avoid relative movement of the force transmitting connecting member 3 with the upper connecting member 1 and the lower connecting member 2 in the vertical direction, further avoid vertical separation of the upper connecting member 1 and the lower connecting member 2, and improve the locking force between the two.

[0081] Furthermore, the locking mechanism 4 includes a tenon sleeve 41 , an elastic member and a connecting assembly 43 .

[0082] The tenon sleeve 41 is movable in the second slot 21 along the first horizontal direction A. The elastic member extends along the first horizontal direction A, and its two ends are respectively connected to the side wall of the second end of the tenon sleeve 41 and the second slot 21. The elastic member can switch between a contracted state and a resilient state.

[0083] When the elastic member is in a contracted state, the main body 32 and the second limiting platform 31 can be inserted into the second slot 21 from between the first end of the second slot 21 and the tenon sleeve 41 .

[0084] When the elastic member is in a rebound state, it can push the tenon sleeve 41 to move along the first horizontal direction A toward the first end of the second slot 21, so that the tenon sleeve 41 pushes the lower part of the main body 32 to press against the side wall of the first end of the second slot 21 and pushes the second limiting platform 31 to press against the peripheral wall of the second limiting groove 222, and then the connecting component 43 can be inserted into the first slot 11 and can move along the first horizontal direction A toward the first end of the first slot 11 to push the first limiting platform 33 to press against the peripheral wall of the first limiting groove 14. The connecting component 43 can also connect the upper connecting member 1 and the lower connecting member 2.

[0085] When the upper and lower modules are assembled on site and it is found that there is a horizontal relative offset between the upper connecting member 1 and the lower connecting member 2, the tenon sleeve 41 can adjust its position in the first horizontal direction A under the elastic force of the elastic member, so as to adapt to pushing the lower part of the main body 32 to press against the side wall of the first end of the second slot 21 and the second limit platform 31 to press against the surrounding wall of the second limit groove 222, thereby further reducing the requirements of this connection node for processing accuracy and on-site assembly accuracy, and further facilitating assembly.

[0086] Specifically, in order to switch between different states of the elastic member, the locking mechanism 4 further includes a baffle 42 , which can be vertically moved to be inserted into the second slot 21 in a locked state and an unlocked state.

[0087] When the baffle 42 is in the locked state, the baffle 42 presses against the side of the tenon sleeve 41 toward the first end of the second slot 21, and the elastic member is in a contracted state to lock the baffle 42, leaving space for the force transmission connector 3 to be inserted into the second slot 21.

[0088] When the lower portion of the force transmission connector 3 is inserted into the second slot 21 , the force transmission connector 3 can push the baffle 42 downward to be located below the tenon sleeve 41 , so that the baffle 42 is in an unlocked state and the elastic member is in a rebound state.

[0089] Specifically, the second slot 21 further has vertically oriented sliding grooves 25 on both sides in the second horizontal direction perpendicular to the first horizontal direction A, and the sliding grooves 25 extend downward to the inside of the bottom wall of the second slot 21. Both sides in the width direction of the baffle 42 are inserted into the sliding grooves 25 and can move vertically along the sliding grooves 25 to support the baffle 42 and improve the accuracy of the vertical movement of the baffle 42.

[0090] Furthermore, the connecting assembly 43 includes a pushing member 431 , a plug plate 432 and a fastener 433 .

[0091] The push member 431 is extended along the first horizontal direction A. The first end of the push member 431 is inserted into the first slot 11 and can move toward the first end of the first slot 11 along the first horizontal direction A to push the first limiting platform 33 to press against the peripheral wall of the first limiting groove 14. The second end of the push member 431 can protrude outside the upper connecting member 1 and the lower connecting member 2 and open a vertically oriented socket 4314.

[0092] After the tenon sleeve 41 pushes the lower part of the main body 32 to press against the side wall of the second end of the second slot 21 and pushes the second limiting platform 31 to press against the peripheral wall of the second limiting groove 222, the first end of the pusher 431 is inserted into the first slot 11, and the pusher 431 is pushed to move toward the first end of the first slot 11 along the first horizontal direction A, so that the pusher 431 pushes the first limiting platform 33 to press against the peripheral wall of the first limiting groove 14. Subsequently, the plug plate 432 is inserted into the socket 4314 and pressed against the side walls of the upper connecting member 1 and the lower connecting member 2, and then the fastener 433 is inserted between the plug plate 432 and the upper connecting member 1 and between the plug plate 432 and the lower connecting member 2, so that the connection and locking of the upper connecting member 1 and the lower connecting member 2 can be conveniently realized.

[0093] Optionally, the fastener 433 is a screw. The side wall of the upper connecting member 1 is provided with a first threaded hole 13 for passing through and connecting the fastener 433 , and the side wall of the lower connecting member 2 is provided with a second threaded hole 26 for passing through and connecting the fastener 433 .

[0094] Preferably, in order to further improve the mutual locking force between the force transmission connecting member 3 and the lower connecting member 2, the following configuration is also included:

[0095] The main body 32 of the force transmission connection member 3 is set as a cylinder, and the second limit platform 31 is set as a truncated cone. The main body 32 and the second limit platform 31 are coaxial.

[0096] A third limiting groove 221 is further provided on the side wall of the first end of the second slot 21 and is located above the second limiting groove 222. The second limiting groove 222 and the third limiting groove 221 are coaxial and are both axially vertical arc grooves, and the inner diameter of the second limiting groove 222 is larger than the inner diameter of the third limiting groove 221, so that the top wall of the second limiting groove 222 can limit the top of the second limiting platform 31.

[0097] The peripheral wall of the cylindrical main body 32 can be tightly pressed against the arcuate peripheral wall of the third limiting groove 221, and the peripheral wall of the truncated cone-shaped second limiting platform 31 can be tightly pressed against the arcuate peripheral wall of the second limiting groove 222, so as to increase the contact area between the main body 32 and the third limiting groove 221, and between the second limiting platform 31 and the second limiting groove 222, further improve the mutual pressing and locking force between the force transmission connecting member 3 and the lower connecting member 2, and further avoid horizontal and vertical separation of the upper connecting member 1 and the lower connecting member 2.

[0098] Preferably, in order to better improve the mutual locking force between the force transmission connecting member 3 and the lower connecting member 2, the following configuration is also included:

[0099] A first arc groove 411 and a second arc groove 412 are formed from top to bottom on one side of the tenon sleeve 41 facing the first end of the second slot 21 . The first arc groove 411 and the second arc groove 412 are coaxial and axially vertical.

[0100] When the tenon sleeve 41 pushes the force transmission connector 3 to move toward the first end of the second slot 21 along the first horizontal direction A, the first arc groove 411 can hug the lower peripheral wall of the cylindrical main body 32, and the second arc groove 412 can hug the peripheral wall of the second limit platform 31, so as to increase the contact area between the tenon sleeve 41 and the force transmission connector 3, and enhance the driving force applied by the tenon sleeve 41 to press the force transmission connector 3 against the lower connector 2, so as to better improve the mutual pressing and locking force between the force transmission connector 3 and the lower connector 2, and further avoid horizontal and vertical separation of the first connector 1 and the second connector 2.

[0101] Specifically, the inner diameter of the second arc-shaped groove 412 is greater than the inner diameter of the first arc-shaped groove 411 .

[0102] Preferably, in order to increase the mutual locking force between the main body 32 and the third limiting groove 221 in the vertical direction:

[0103] The lower peripheral wall of the main body 32 and the peripheral wall of the third limiting groove 221 are both provided with a concave-convex structure that allows the two to be plugged into each other along the first horizontal direction A, so as to increase the mutual locking force between the main body 32 and the third limiting groove 221 in the vertical direction when the first connecting member 1 and the second connecting member 2 bear a vertical load, further avoiding the separation of the force transmitting connecting member 3 and the connecting member 2 in the vertical direction, and further avoiding the vertical separation of the first connecting member 1 and the second connecting member 2 when bearing a vertical load.

[0104] More preferably, both the lower peripheral wall of the main body 32 and the peripheral wall of the third limiting groove 221 are provided with threads that allow the two to be plugged into each other along the first horizontal direction A, so as to facilitate processing.

[0105] Preferably, in order to further facilitate the connection of the connecting assembly 43 to the upper connecting member 1 and the lower connecting member 2, and to further enhance the pressing and locking force between the force transmission connecting member 3 and the upper connecting member 1 and the lower connecting member 2, the following configuration is also included:

[0106] The cross section of the first slot 11 is T-shaped, and the second end of the first slot 11 is open to form a first notch 12 .

[0107] The first stopper 33 is a cuboid coaxial with the main body 31, and the longitudinal section of the combination of the first stopper 33 and the main body 31 is a T-shaped body that is plugged into the first slot 11. When assembling, after the upper connecting member 1 is moved to be located above the lower connecting member 2, the upper part of the first stopper 33 and the main body 31 can be inserted into the first slot 11 through the first notch 12, and the bottom of the first stopper 33 can be hung in the first slot 11, so that the upper connecting member 1 drives the lower part of the main body 31 and the second stopper 31 to be inserted downward into the second slot 21.

[0108] A horizontal slot 23 extending along the first horizontal direction A is further provided at the top of the lower connecting member 2. The horizontal slot 23 is located above the second slot 21 and is vertically connected to each other. The width of the horizontal slot 23 is greater than the width of the second slot 21. The first end of the horizontal slot 23 in the first horizontal direction A is closed, and the second end is open to form a second notch 24.

[0109] The pushing member 431 includes, from top to bottom, a first plate 4311 , a second plate 4312 and a third plate 4313 , all of which extend along the first horizontal direction A.

[0110] The cross section of the assembly of the first plate 4311 and the second plate 4312 is in a T-shape that fits in the first slot 11. The first end of the first plate 4311 in the first horizontal direction A is a vertical plane, and the first end of the third plate 4313 in the first horizontal direction A or the first ends of the second plate 4312 and the third plate 4313 in the first horizontal direction A are provided with an axially vertical third arc groove 4315. The second end of at least one of the first plate 4311, the second plate 4312 and the third plate 4313 is provided with a vertically oriented socket 4314.

[0111] The specific assembly steps are:

[0112] S1: The tenon sleeve 41 pushes the lower part of the main body 32 along the first horizontal direction A to press against the peripheral wall of the second limiting groove 222 , and the second limiting platform 31 presses against the peripheral wall of the second limiting groove 222 .

[0113] S2: The first plate 4311 and the second plate 4312 can be inserted into the first slot 11 through the first notch 12, and the third plate 4313 can be inserted into the horizontal slot 23 through the second notch 24. The vertical plane of the first plate 4311 can fit and press the first limiting platform 33 of the rectangular parallelepiped against the peripheral wall of the first limiting groove 14, and the third arc groove 4315 can hold the peripheral wall of the main body 31 and press the main body against the inner wall of the third limiting groove 221. In this way, the contact area between the pusher 431 and the force transmission connector 3 can be increased, and the pushing force applied by the pusher 431 to press the force transmission connector 3 against the upper connector 1 is enhanced, thereby enhancing the pushing force to press the force transmission connector 3 against the lower connector 2, so as to better improve the mutual pressing and locking force between the force transmission connector 3 and the upper connector 1 and the lower connector 2, and further avoid the horizontal separation and vertical separation of the first connector 1 and the second connector 2. At the same time, the first limiting platform 33 of the rectangular body is pressed against the peripheral wall of the first limiting groove 14, which can also prevent the force transmission connecting member 3 from rotating in the vertical direction relative to the upper connecting member 1 and the lower connecting member 2, and further improve the locking stability of the force transmission connecting member 3 for the upper connecting member 1 and the lower connecting member 2.

[0114] S3: Insert the plug plate 432 into the socket 4314 protruding from the upper connecting member 1 and the lower connecting member 2, and then fix the plug plate 432 to the upper connecting member 1 and the lower connecting member 2 at the same time through the fastener 433 to connect the upper connecting member 1 and the lower connecting member 2.

[0115] Therefore, the connection assembly 42 can conveniently realize the connection locking of the upper connecting member 1 and the lower connecting member 2, and can enhance the pressing and locking force between the force transmission connecting member 3 and the upper connecting member 1 and the lower connecting member 2 respectively.

[0116] Example 2

[0117] Based on the embodiment 1, this embodiment further provides a modular building structure, including the connection node in the embodiment 1, and also including an upper module and a lower module. The upper module and the lower module can be connected to form a modular building structure through the connection node.

[0118] One side and the top of the upper connecting member 1 are respectively welded to the ends of the adjacent bottom beams and columns in the upper module, so that the upper connecting member 1 is fixed to the bottom corner of the upper module.

[0119] One side and the bottom of the lower connecting member 2 are respectively welded to the ends of the adjacent top beams and columns in the lower module, so that the lower connecting member 2 is fixed to the top corner of the lower module.

[0120] The upper connecting member 1 and the lower connecting member 2 can be opposed to each other up and down and connected through the force transmission connecting member 3 and the locking mechanism 4 to connect the upper module and the lower module that are vertically opposed.

[0121] Thus, the modular building structure can weld the upper connector 1 to the upper module and the lower connector 2 to the lower module, and connect and lock the upper connector 1 and the lower connector 2 relative to each other in combination with the force transmission connector 3 and the locking mechanism 4, so as to realize the corner connection of the connection node for the upper module and the lower module, and ensure the connection strength of the node. At the same time, no holes are required on the upper module and the lower module, so as to ensure the strength of the upper module and the lower module.

[0122] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0123] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0124] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0125] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0126] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A modular building structure self-locking connection node, characterized in that: It comprises an upper connecting piece (1), a lower connecting piece (2), a force transmission connecting piece (3) and a locking mechanism (4); The upper connecting member (1) can be fixed to the bottom corner of the upper module; the bottom of the upper connecting member (1) is provided with a first slot (11) extending along a first horizontal direction (A); The lower connecting member (2) can be fixed to the top corner of the lower module; the top of the lower connecting member (2) is provided with a second slot (21) extending along the first horizontal direction (A); The force-transmitting connection member (3) is oriented vertically; After the upper portion of the force transmission connection member (3) can be inserted into the first slot (11) movably along the first horizontal direction (A), and the lower portion can be inserted into the second slot (21) movably along the first horizontal direction (A), the locking mechanism (4) can connect the upper connection member (1) and the lower connection member (2), and push the force transmission connection member (3) along the first horizontal direction (A) so as to press the upper peripheral wall of the force transmission connection member (3) against the side wall of the first end of the first slot (11) in the first horizontal direction (A), and the lower peripheral wall of the force transmission connection member (3) against the side wall of the first end of the second slot (21) in the first horizontal direction (A).

2. The modular building structure self-locking connection node according to claim 1, characterized in that: A first limiting groove (14) is formed at an upper portion of a side wall of a first end of the first slot (11) in the first horizontal direction (A) and faces a second end of the first slot (11); A second limiting groove (222) is formed at the lower part of the side wall of the first end of the second slot (21) in the first horizontal direction (A), facing the second end of the second slot (21); The force transmission connecting member (3) comprises a main body (32), a first limiting platform (33) formed by horizontally extending outward from the upper end of the main body (32), and a second limiting platform (31) formed by horizontally extending outward from the lower end of the main body (32); When the first limiting platform (33) and the upper part of the main body (32) are inserted into the first slot (11), and the lower part of the main body (32) and the second limiting platform (31) are inserted into the second slot (21), the locking mechanism (4) can push the force transmission connecting member (3) to move along the first horizontal direction (A), so that the peripheral wall of the first limiting platform (33) presses against the peripheral wall of the first limiting groove (14), the peripheral wall of the main body (32) presses against the peripheral wall of the second limiting groove (222), and the peripheral wall of the second limiting platform (31) presses against the peripheral wall of the second limiting groove (222), the bottom wall of the first limiting groove (14) can limit the bottom of the first limiting platform (33), and the top wall of the second limiting groove (222) can limit the top of the second limiting platform (31); the locking mechanism (4) can also connect the upper connecting member (1) and the lower connecting member (2).

3. The modular building structure self-locking connection node according to claim 2, characterized in that: The locking mechanism (4) comprises a tenon sleeve (41), an elastic member and a connecting assembly (43); The tenon sleeve (41) is movable along the first horizontal direction (A) and is located in the second slot (21); the elastic member extends along the first horizontal direction (A), and its two ends are respectively connected to the tenon sleeve (41) and the side wall of the second end of the second slot (21); the elastic member is switchable between a contracted state and a resilient state; When the elastic member is in a contracted state, the main body (32) and the second limiting platform (31) can be inserted into the second slot (21) from between the first end of the second slot (21) and the tenon sleeve (41); When the elastic member is in a rebound state, it is capable of pushing the tenon sleeve (41) to move along the first horizontal direction (A) toward the first end of the second slot (21), so that the tenon sleeve (41) can push the lower part of the main body (32) to press against the side wall of the first end of the second slot (21) and push the second limit platform (31) to press against the peripheral wall of the second limit groove (222). After that, the connecting component (43) can be inserted into the first slot (11) and can move along the first horizontal direction (A) toward the first end of the first slot (11) to push the first limit platform (33) to press against the peripheral wall of the first limit groove (14); the connecting component (43) can also connect the upper connecting member (1) and the lower connecting member (2).

4. The modular building structure self-locking plug connection node according to claim 3, characterized in that: The locking mechanism (4) further comprises a baffle (42), wherein the baffle (42) can be vertically moved to be inserted into the second slot (21) in a locked state and an unlocked state; When the baffle (42) is in a locked state, the baffle (42) presses against a side of the tenon sleeve (41) facing the first end of the second slot (21), and the elastic member is in a contracted state; When the lower portion of the force transmission connection member (3) is inserted into the second slot (21), the force transmission connection member (3) can push the baffle plate (42) downward to a position below the tenon sleeve (41), so that the baffle plate (42) is in an unlocked state and the elastic member is in a rebound state.

5. The modular building structure self-locking connection node according to claim 3, characterized in that: The main body (32) is a cylinder, the second limiting platform (31) is a truncated platform, and the main body (32) and the second limiting platform (31) are coaxial; A third limiting groove (221) located above the second limiting groove (222) is also provided on the side wall of the first end of the second slot (21); the second limiting groove (222) and the third limiting groove (221) are coaxial and both are axially vertical arc grooves, and the inner diameter of the second limiting groove (222) is greater than the inner diameter of the third limiting groove (221); The peripheral wall of the main body (32) can press against the peripheral wall of the third limiting groove (221), and the second limiting platform (31) can press against the peripheral wall of the second limiting groove (222).

6. The modular building structure self-locking connection node according to claim 5, characterized in that: The tenon sleeve (41) is provided with a first arc groove (411) and a second arc groove (412) from top to bottom on one side of the first end of the second slot (21), and the first arc groove (411) and the second arc groove (412) are coaxial and axially vertical; When the tenon sleeve (41) pushes the force transmission connection member (3) to move toward the first end of the second slot (21) along the first horizontal direction (A), the first arc-shaped groove (411) can hug the lower peripheral wall of the main body (32), and the second arc-shaped groove (412) can hug the peripheral wall of the second limit platform (31).

7. The modular building structure self-locking connection node according to claim 5, characterized in that: The lower peripheral wall of the main body (32) and the peripheral wall of the third limiting groove (221) are both provided with concave-convex structures that enable the two to be plugged into each other along the first horizontal direction (A).

8. The modular building structure self-locking connection node according to claim 4, characterized in that: The connecting assembly (43) comprises a pushing member (431), a plug plate (432) and a fastener (433); The pushing member (431) is extended along the first horizontal direction (A); the first end of the pushing member (431) can be inserted into the first slot (11), and can move along the first horizontal direction (A) toward the first end of the first slot (11) to push the first limiting platform (33) to press against the peripheral wall of the first limiting groove (14); the second end of the pushing member (431) can protrude outside the upper connecting member (1) and the lower connecting member (2), and is provided with a vertically oriented socket (4314); The socket (4314) is used for inserting the plug plate (432), and the plug plate (432) can abut against the side walls of the upper connecting member (1) and the lower connecting member (2); the fastener (433) can be inserted between the plug plate (432) and the upper connecting member (1) and between the plug plate (432) and the lower connecting member (2) to connect the upper connecting member (1) and the lower connecting member (2).

9. The modular building structure self-locking connection node according to claim 8, characterized in that: The cross section of the first slot (11) is T-shaped, and the second end of the first slot (11) is open to form a first notch (12); The first limiting platform (33) is a rectangular parallelepiped coaxial with the main body (31); the longitudinal cross-section of the combination of the first limiting platform (33) and the main body (31) is a T-shape that is plugged into the first slot (11); the upper parts of the first limiting platform (33) and the main body (31) can be inserted into the first slot (11) through the first notch (12), and the bottom of the first limiting platform (33) can be hung in the first slot (11); A horizontal slot (23) extending along the first horizontal direction (A) is also provided on the top of the lower connecting member (2); the horizontal slot (23) is located above the second slot (21) and is vertically connected to each other; the width of the horizontal slot (23) is greater than the width of the second slot (21); the first end of the horizontal slot (23) in the first horizontal direction (A) is closed, and the second end is open to form a second notch (24); The pushing member (431) includes, from top to bottom, a first plate (4311), a second plate (4312) and a third plate (4313), all of which extend along the first horizontal direction (A); The combined cross-section of the first plate (4311) and the second plate (4312) is in a T-shape that is plugged into the first slot (11); the first end of the first plate (4311) in the first horizontal direction (A) is a vertical plane, and the first end of the third plate (4313) in the first horizontal direction (A) or the first ends of the second plate (4312) and the third plate (4313) in the first horizontal direction (A) is provided with an axially vertical third arc groove (4315); the second end of at least one of the first plate (4311), the second plate (4312) and the third plate (4313) is provided with the vertically oriented socket (4314); When the tenon sleeve (41) pushes the lower part of the main body (32) along the first horizontal direction (A) to press against the peripheral wall of the second limiting groove (222) and the second limiting platform (31) presses against the peripheral wall of the second limiting groove (222), the first plate (4311) and the second plate (4312) can be inserted into the first slot (11) through the first notch (12) and the third plate (4313) can be inserted into the horizontal slot (23) through the second notch (24), the first plate (4311) can fit and press the first limiting platform (33) against the peripheral wall of the first limiting groove (14), and the third arc groove (4315) can hug the peripheral wall of the main body (31) and press the main body against the peripheral wall of the third limiting groove (221); The socket (4314) protrudes from the upper connecting member (1) and the lower connecting member (2).

Images