Modular building structure bolt self-locking connection node

Abstract

The application relates to a modular building structure bolt self-locking connecting node, 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 insertion slot extending along a first horizontal direction. The top of the lower connecting piece is provided with a second insertion slot extending along the first horizontal direction. The upper part of the force transmission connecting piece is movably inserted into the first insertion slot along the first horizontal direction, the lower part of the force transmission connecting piece is movably inserted into the second insertion slot along the first horizontal direction, the locking mechanism can connect the upper connecting piece and the lower connecting piece, and push the force transmission connecting piece along the first horizontal direction, so that the upper part of the force transmission connecting piece is pressed against the side wall of the first end of the first insertion slot in the first horizontal direction, and the lower part of the force transmission connecting piece is pressed against the side wall of the first end of the second insertion slot in the first horizontal direction. The horizontal constraint, vertical constraint and bending moment constraint of the modular building structure connecting node can be realized, the mechanical performance of the whole structure is improved, the installation is faster, and the construction error can be effectively controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of modular building, in particular to a modular building structure bolt self-locking connecting node. BACKGROUND

[0002] Modular steel structure building has the advantages of short construction period, high building quality, green low-carbon environmental protection and the like. Modular steel structure needs to be connected between prefabricated modules through the use of connecting nodes, so as to form a complete modular building. A fast, universal, safe and reliable connecting node between modules is the key to fully exert the advantages of fast construction of modular steel structure building and to ensure the overall stress performance of modular steel structure.

[0003] The connecting node is basically located at the four corners of a cuboid-shaped module. The existing connecting methods for modular building structure mainly include the following two kinds:

[0004] (1) Grouting connecting node: connecting between adjacent modules through a specific part and then pouring concrete between adjacent modules. This connecting method needs to reserve a cavity for pouring concrete at the connecting part of the module, which will result in a larger volume at the connecting part. At the same time, this connecting method needs to be grouted on site and needs to wait for the concrete to solidify and cure. The on-site construction is complex and the construction efficiency is low.

[0005] (2) Bolt connecting node: threaded holes are provided at the connecting part of the module, and screws are provided between the adjacent two modules. However, this connecting method has high requirements for the machining precision of the threaded holes, so that the adjacent two modules can be installed in position. At the same time, the opening on the module will weaken the strength of the module and reduce the connecting strength between the modules. In addition, a large installation space needs to be reserved for installation, which is difficult to use in situations where the construction space is limited.

[0006] Therefore, there is an urgent need for a connecting node that is easy to install on site, has low machining precision requirements and does not affect the strength of the module. SUMMARY

[0007] (I) Technical problems to be solved

[0008] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides a modular building structure bolt self-locking connecting node, which can realize small volume, fast installation, effective control of construction error, low machining precision requirement and no influence on the strength of the module at the same time.

[0009] (II) Technical solutions

[0010] In order to achieve the above-mentioned purposes, the main technical solutions adopted by the present application include:

[0011] The embodiment of the present application provides a modular building structure bolt self-locking type connecting node, which comprises an upper connecting piece, a lower connecting piece, a force transmission connecting piece and a locking mechanism.

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

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

[0014] The force transmission connecting piece is vertically oriented;

[0015] After the upper part of the force transmission connecting piece is movably inserted into the first insertion slot along the first horizontal direction and the lower part is movably inserted into the second insertion slot along the first horizontal direction, the locking mechanism can connect the upper connecting piece and the lower connecting piece and push the force transmission connecting piece along the first horizontal direction, so that the upper part of the force transmission connecting piece is pressed against the side wall of the first end of the first insertion slot in the first horizontal direction and the lower part of the force transmission connecting piece is pressed against the side wall of the first end of the second insertion slot in the first horizontal direction.

[0016] According to the present application, the first limiting slot is formed in the upper part of the side wall of the first end of the first insertion slot and faces the second end of the first insertion slot;

[0017] The second limiting slot is formed in the lower part of the side wall of the first end of the second insertion slot and faces the second end of the second insertion slot;

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

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

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

[0021] The tenon sleeve is movably arranged in the second slot along the first horizontal direction; the elastic member extends along the first horizontal direction and has two ends connected to the tenon sleeve and the side wall of the second end of the second slot respectively; the elastic member can be switched between a contracted state and a rebound state;

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

[0023] When the elastic member is in the rebound state, the tenon sleeve can be pushed to move along the first horizontal direction towards 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 limiting table to press against the circumferential wall of the second limiting slot, the connecting assembly can be inserted into the first slot and can move along the first horizontal direction towards the first end of the first slot to push the first limiting table to press against the circumferential wall of the first limiting slot; the connecting assembly can also connect the upper connecting member and the lower connecting member.

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

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

[0026] When the lower part of the force transmission connecting member is inserted into the second slot, the force transmission connecting member can push the baffle to move downward to be located below the tenon sleeve, so that the baffle is in the unlocked state and the elastic member is in the rebound state.

[0027] According to the present application,

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

[0029] A third limiting slot above the second limiting slot is further formed on the side wall of the first end of the second slot; the second limiting slot and the third limiting slot are coaxial and are both axially vertically arc-shaped slots, and the inner diameter of the second limiting slot is greater than that of the third limiting slot;

[0030] The circumferential wall of the main body can press against the circumferential wall of the third limiting slot, and the second limiting table can press against the circumferential wall of the second limiting slot.

[0031] According to the present application, the mortise is provided with a first arc-shaped slot and a second arc-shaped slot from top to bottom on the side of the mortise facing the first end of the second slot, and the first arc-shaped slot and the second arc-shaped slot are coaxial and vertically axial;

[0032] When the mortise pushes the force transmission connector to move along the first horizontal direction towards the first end of the second slot, the first arc-shaped slot can embrace the lower peripheral wall of the main body, and the second arc-shaped slot can embrace the peripheral wall of the second limiting platform.

[0033] According to the present application, the lower peripheral wall of the main body and the peripheral wall of the third limiting slot are both provided with concave-convex structures which can be inserted into each other along the first horizontal direction.

[0034] According to the present application, the connecting assembly comprises a pushing member, an insertion plate and a fastener;

[0035] The pushing member is arranged to extend along the first horizontal direction, the first end of the pushing member can be inserted into the first slot and can move along the first horizontal direction towards the first end of the first slot to push the first limiting platform to press against the peripheral wall of the first limiting slot, and the second end of the pushing member can protrude out of the upper connecting member and the lower connecting member and is provided with a vertically oriented insertion opening;

[0036] The insertion opening is used for inserting the insertion plate, and the insertion plate can abut against the side wall of the upper connecting member and the lower connecting member; the insertion plate and the upper connecting member and the insertion plate and the lower connecting member can be penetrated by the fastener to connect the upper connecting member and the lower connecting member.

[0037] According to the present application, the cross section of the first slot is T-shaped, the second end of the first slot is open and forms a first gap;

[0038] The first limiting platform is a cuboid coaxial with the main body, and the longitudinal section of the combination of the first limiting platform and the main body is T-shaped for matching and inserting into the first slot, the upper part of the first limiting platform and the main body can be inserted into the first slot from the first gap, and the bottom of the first limiting platform can be hung in the first slot;

[0039] The top of the lower connecting member is further provided with horizontal slots extending along the first horizontal direction, the horizontal slots are located above the second slot and vertically communicate with each other, and the width of the horizontal slots is greater than the width of the second slot; the first end of the horizontal slots in the first horizontal direction is closed, and the second end is open and forms a second gap;

[0040] The pushing member sequentially comprises a first plate, a second plate and a third plate all extending along the first horizontal direction from top to bottom;

[0041] The combined cross section of the first plate and the second plate is T-shaped and matches 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 end of the second plate and the third plate in the first horizontal direction is provided with an axially vertical third arc-shaped slot; the second end of at least one of the first plate, the second plate and the third plate is provided with the vertical socket;

[0042] When the tenon sleeve pushes the lower part of the main body to press against the circumferential wall of the second limiting groove in the first horizontal direction, and the second limiting table presses against the circumferential wall of the second limiting groove, the first plate and the second plate can be inserted into the first slot through the first gap, and the third plate can be inserted into the horizontal slot through the second gap, the first plate can press the first limiting table against the circumferential wall of the first limiting groove, and the third arc-shaped slot can tightly hold the circumferential wall of the main body and press the main body against the circumferential wall of the third limiting groove;

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

[0044] (Three) beneficial effects

[0045] The modular building structure bolt self-locking connection node provided by the application has the following beneficial effects:

[0046] Horizontal constraint, vertical constraint and bending moment constraint can be realized: the force in the horizontal direction and the vertical direction borne by the upper connecting piece and / or the lower connecting piece can be transmitted by the mutual pressing between the upper part of the force transmission connecting piece and the side wall of the first end of the first slot, the lower part of the force transmission connecting piece and the side wall of the first end of the second slot, and the locking mechanism and the force transmission connecting piece, avoiding the separation between the upper connecting piece and the lower connecting piece in the horizontal and vertical directions. Since the upper connecting piece and the lower connecting piece are constrained in the horizontal and vertical directions by the locking of the force transmission connecting piece and the locking mechanism, the upper connecting piece and the lower connecting piece cannot be relatively displaced or have a small displacement amount before being damaged, so that the present connection node has good rigidity and can be considered as rigid connection in an ideal state, that is, it can bear a large bending moment load.

[0047] The mechanical properties of the overall modular building structure are improved: the overall stress of the entire connection node can be dispersed from the center to the upper connecting piece and the lower connecting piece, avoiding deformation or bending of the node connection of the upper and lower modules due to stress concentration, and improving the mechanical properties of the overall modular building structure.

[0048] The installation is quick, time-saving and labor-saving: when the upper module and the lower module are processed, 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 connected on site, only the force transmission connecting piece and the locking mechanism need to be installed, and the assembly of the upper connecting piece and the lower connecting piece is completed, thereby realizing the assembly of the upper module and the lower module. The installation process is simple and quick, and does not need to wait for the time of solidification and curing of the concrete, which is time-saving and labor-saving.

[0049] The construction error can be effectively controlled, and the processing and installation precision requirement is low: since the locking mechanism and the force transmission connecting piece can move along the first horizontal direction relative to the upper connecting piece and the lower connecting piece, when the upper connecting piece and the lower connecting piece exist horizontal offset during on-site assembly, the position of the force transmission connecting piece in the first horizontal direction can be adjusted through the locking mechanism, that is, the upper part of the force transmission connecting piece is pressed against the side wall of the first end of the first insertion slot, and the lower part of the force transmission connecting piece is pressed against the side wall of the first end of the second insertion slot, so that the construction error can be effectively controlled. Therefore, the processing precision of each part and the on-site assembly precision of the joint are low, which is convenient for assembly. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 It is a perspective view of the connecting joint of the application;

[0051] Figure 2 It is an exploded view of Figure 1 ;

[0052] Figure 3 It is a perspective view of Figure 2 ;

[0053] Figure 4 It is a sectional view of Figure 1 ;

[0054] Figure 5 It is a sectional view of the upper connecting piece (the baffle is not shown);

[0055] Figure 6 It is a sectional view of the upper connecting piece (the baffle is shown);

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

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

[0058] Figure 9 It is a sectional view of the mortise sleeve;

[0059] Figure 10 It is a perspective view of the pushing piece.

[0060]

Explanation of reference numerals

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

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

[0063] 3: force transmission connecting piece; 31: second limiting platform; 32: main body; 33: first limiting platform;

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

[0065] A: first horizontal direction. DETAILED DESCRIPTION

[0066] In order to better explain the present application, so as to be understood, the present application is described in detail below by specific embodiments, in combination with the drawings. In this article, the orientation of "upper", "lower" and other orientation terms are referred to the orientation of the drawings. Figure 1

[0067] Referring to Figures 1-10 , the modular building structure bolt self-locking connecting node proposed in the embodiment of the present application comprises an upper connecting piece 1, a lower connecting piece 2, a force transmission connecting piece 3 and a locking mechanism 4.

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

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

[0070] Therefore, the present connecting node has the following effects:

[0071] ​The horizontal constraint, vertical constraint and bending moment constraint can be realized: the horizontal and vertical forces borne by the upper connecting piece 1 and / or the lower connecting piece 2 can be transmitted by the mutual pressing between the upper part of the force transmission connecting piece 3, the side wall of the first end of the first slot 11, the lower part of the force transmission connecting piece 3, the side wall of the first end of the second slot 21 and the locking mechanism 4 and the force transmission connecting piece 3, avoiding the separation between the upper connecting piece 1 and the lower connecting piece 2 in the horizontal and vertical directions. Since the upper connecting piece 1 and the lower connecting piece 2 are constrained in the horizontal and vertical directions by the locking of the force transmission connecting piece 3 and the locking mechanism 4, the upper connecting piece 1 and the lower connecting piece 2 cannot be relatively displaced or the displacement is small before being damaged, so that the connection node has good rigidity and can be considered as rigid connection in ideal state, that is, it can bear larger bending moment load.

[0072] The mechanical properties of the overall modular building structure are improved: the overall stress can be dispersed from the center to the upper connecting piece 1 and the lower connecting piece 2 by the whole connection node, avoiding the deformation or bending of the node connection of the upper and lower modules due to stress concentration, and improving the mechanical properties of the overall modular building structure.

[0073] The installation is quick, time-saving and labor-saving: when the upper module and the lower module are processed, the upper connecting piece 1 can be fixed to the bottom corner of the upper module and the lower connecting piece 2 can be fixed to the top corner of the lower module in advance. During on-site connection, only the force transmission connecting piece 3 and the locking mechanism 4 need to be installed, and the assembly of the upper connecting piece 1 and the lower connecting piece 2 is completed, and then the assembly of the upper module and the lower module is realized. The installation process is simple and quick, and does not need to wait for the solidification and curing time of the concrete, which is time-saving and labor-saving.

[0074] The construction error can be effectively controlled, and the processing and installation precision requirement is low: since the locking mechanism 4 and the force transmission connecting piece 3 can move along the first horizontal direction A relative to the upper connecting piece 1 and the lower connecting piece 2, when the upper connecting piece 1 and the lower connecting piece 2 are horizontally offset during on-site assembly, the position of the force transmission connecting piece 3 in the first horizontal direction A can be adjusted by the locking mechanism 4, that is, the upper part of the force transmission connecting piece 3 is pressed against the side wall of the first end of the first slot 11 and the lower part of the force transmission connecting piece 3 is pressed against the side wall of the first end of the second slot 21, which can effectively control the construction error. Therefore, the processing precision of each part and the on-site assembly precision of the node are low, which is convenient for assembly.

[0075] Further, to further improve the vertical locking force of the force transmission connecting piece 3 on the upper connecting piece 1 and the lower connecting piece 2:

[0076] A first limiting slot 14 is formed on the upper part of the side wall of the first end of the first slot 11 in the first horizontal direction A and faces the second end of the first slot 11.

[0077] The second limiting groove 222 is formed in the lower part of the sidewall of the second slot 21 at the first end in the first horizontal direction A and faces the second end of the second slot 21.

[0078] The force transmission connector 3 comprises a main body 32, a first limiting platform 33 horizontally extending outward from the upper end of the main body 32, and a second limiting platform 31 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 abuts against the peripheral wall of the first limiting groove 14, the peripheral wall of the main body 32 abuts against the peripheral wall of the second limiting groove 222, and the peripheral wall of the second limiting platform 31 abuts 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, after the upper connector 1 and the lower connector 2 are assembled, when the upper connector 1 and / or the lower connector 2 bear a pulling force in the vertical direction, the bottom of the first limiting platform 33 is limited by the bottom wall of the first limiting groove 14, and the top of the second limiting platform 31 is limited by the top wall of the second limiting groove 222, so that the force transmission connector 3 cannot move relative to the upper connector 1 and the lower connector 2 in the vertical direction, respectively, further avoiding the vertical separation of the upper connector 1 and the lower connector 2, and improving the locking force between them.

[0081] Further, the locking mechanism 4 comprises a mortise 41, a resilient member, and a connecting assembly 43.

[0082] The mortise 41 is movably located in the second slot 21 along the first horizontal direction A. The resilient member extends along the first horizontal direction A and has two ends connected to the mortise 41 and the sidewall of the second end of the second slot 21, respectively. The resilient member can be switched between a contracted state and a rebound state.

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

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

[0085] When the upper and lower modules are assembled on site and it is found that the upper connecting piece 1 and the lower connecting piece 2 have a horizontal relative deviation, 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 push the lower part of the main body 32 to abut against the side wall of the first end of the second slot 21, and the second limiting table 31 to abut against the peripheral wall of the second limiting groove 222, which further reduces the requirements for machining precision and on-site assembly precision of the connection node, and further facilitates assembly.

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

[0087] When the baffle 42 is in the locked state, the baffle 42 abuts against one side of the tenon sleeve 41 towards the first end of the second slot 21, and the elastic member is in the contracted state, so as to lock the baffle 42 and leave space for the force transmission connecting piece 3 to be inserted into the second slot 21.

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

[0089] Specifically, the second slot 21 is further provided with 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. The baffle 42 is inserted into the sliding grooves 25 on both sides in the width direction and can vertically move along the sliding grooves 25, so as to support the baffle 42 and improve the precision of vertical movement of the baffle 42.

[0090] Further, the connecting assembly 43 comprises a pushing piece 431, an insertion plate 432 and a fastener 433.

[0091] The pushing member 431 is arranged to extend along the first horizontal direction A. The first end of the pushing member 431 is inserted into the first slot 11 and is movable along the first horizontal direction A towards the first end of the first slot 11 to push the first limiting platform 33 against the circumferential wall of the first limiting groove 14. The second end of the pushing member 431 is capable of protruding out of the upper connecting member 1 and the lower connecting member 2 and is provided with a vertically oriented insertion opening 4314.

[0092] When the tenon sleeve 41 pushes the lower part of the main body 32 against the side wall of the second end of the second slot 21 and pushes the second limiting platform 31 against the circumferential wall of the second limiting groove 222, the first end of the pushing member 431 is inserted into the first slot 11 and the pushing member 431 is pushed to move along the first horizontal direction A towards the first end of the first slot 11, so that the pushing member 431 pushes the first limiting platform 33 against the circumferential wall of the first limiting groove 14. Then, the insertion plate 432 is inserted into the insertion opening 4314 and abuts against the side wall of the upper connecting member 1 and the lower connecting member 2, and then a fastener 433 is threaded through the insertion plate 432 and the upper connecting member 1 and the lower connecting member 2, so that the upper connecting member 1 and the lower connecting member 2 are conveniently connected and locked.

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

[0095] The main body 32 of the force transmission connecting member 3 is arranged as a cylinder, and the second limiting platform 31 is arranged as a circular platform, and the main body 32 and the second limiting platform 31 are coaxial.

[0096] The side wall of the first end of the second slot 21 is further provided with a third limiting groove 221 located above the second limiting groove 222. The second limiting groove 222 and the third limiting groove 221 are coaxial and are both axially vertically arc-shaped grooves, and the inner diameter of the second limiting groove 222 is greater 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 circumferential wall of the cylindrical main body 32 can tightly press against the arc circumferential wall of the third limiting groove 221, and the circumferential wall of the circular platform-shaped second limiting platform 31 can tightly press against the arc circumferential 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 the horizontal separation and vertical separation of the upper connecting member 1 and the lower connecting member 2.

[0098] Preferably, to better improve the mutual locking force between the force transmission connector 3 and the lower connector 2, the following arrangement is further included:

[0099] The tenon sleeve 41 is provided with a first arc-shaped groove 411 and a second arc-shaped groove 412 from top to bottom on the side facing the first end of the second insertion slot 21, and the first arc-shaped groove 411 and the second arc-shaped groove 412 are coaxial and vertically axial.

[0100] When the tenon sleeve 41 pushes the force transmission connector 3 to move along the first horizontal direction A towards the first end of the second insertion slot 21, the first arc-shaped groove 411 can tightly hold the lower peripheral wall of the cylindrical body 32, and the second arc-shaped groove 412 can tightly hold the peripheral wall of the second limiting platform 31, so as to increase the contact area between the tenon sleeve 41 and the force transmission connector 3, and to enhance the pushing 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 locking force between the force transmission connector 3 and the lower connector 2, and to further avoid the horizontal separation 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, to increase the mutual locking force between the body 32 and the third limiting groove 221 in the vertical direction:

[0103] The lower peripheral wall of the body 32 and the peripheral wall of the third limiting groove 221 are both provided with concave-convex structures capable of being inserted into each other along the first horizontal direction A, so as to increase the mutual locking force between the body 32 and the third limiting groove 221 in the vertical direction when the first connector 1 and the second connector 2 bear vertical loads, and to further avoid the separation of the force transmission connector 3 and the lower connector 2 in the vertical direction, and to further avoid the vertical separation of the first connector 1 and the second connector 2 when bearing vertical loads.

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

[0105] Preferably, to further facilitate the connection of the connecting assembly 43 to the upper connector 1 and the lower connector 2, and to further enhance the pressing locking force between the force transmission connector 3 and the upper connector 1 and the lower connector 2 respectively, the following arrangement is further included:

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

[0107] The first limiting platform 33 is a cuboid coaxial with the main body 31, and the longitudinal section of the combination of the first limiting platform 33 and the main body 31 is a T shape matched with the first slot 11. When the upper connecting piece 1 is moved to the upper side of the lower connecting piece 2, the upper part of the combination of the first limiting platform 33 and the main body 31 can be inserted into the first slot 11 through the first gap 12, and the bottom of the first limiting platform 33 can be hung in the first slot 11, so that the lower part of the main body 31 and the second limiting platform 31 are inserted into the second slot 21 under the driving of the upper connecting piece 1.

[0108] The top of the lower connecting piece 2 is also provided with horizontal slots 23 extending along the first horizontal direction A, the horizontal slots 23 are located above the second slots 21 and vertically communicate with each other, and the width of the horizontal slots 23 is greater than that of the second slots 21. The first end of the horizontal slot 23 in the first horizontal direction A is closed, and the second end is open and forms a second gap 24.

[0109] The pushing piece 431 comprises, from top to bottom, a first plate 4311, a second plate 4312 and a third plate 4313, all extending along the first horizontal direction A.

[0110] The cross section of the combination of the first plate 4311 and the second plate 4312 is a T shape matched with the first slot 11. The first end of the first plate 4311 in the first horizontal direction A is a vertical plane, or the first end of the third plate 4313 in the first horizontal direction A or the first end of the second plate 4312 and the third plate 4313 in the first horizontal direction A is provided with an axially vertical third arc-shaped slot 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 as follows:

[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 slot 222, and the second limiting platform 31 presses against the peripheral wall of the second limiting slot 222.

[0113] S2: the first plate 4311 and the second plate 4312 can be inserted into the first slot 11 by the first gap 12, and the third plate 4313 is inserted into the horizontal slot 23 by the second gap 24, the vertical plane of the first plate 4311 can abut and press the first limiting table 33 of the cuboid against the peripheral wall of the first limiting groove 14, and the third arc-shaped groove 4315 can tightly 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 of the pushing piece 431 with the force transmission connecting piece 3 can be increased, and the pushing force applied by the pushing piece 431 to press the force transmission connecting piece 3 against the upper connecting piece 1 is enhanced, and in turn the pushing force to press the force transmission connecting piece 3 against the lower connecting piece 2 is enhanced, so as to better improve the mutual pressing locking force between the force transmission connecting piece 3 and the upper connecting piece 1 and the lower connecting piece 2, and further avoid the horizontal separation and vertical separation of the first connecting piece 1 and the second connecting piece 2. At the same time, the first limiting table 33 of the cuboid presses against the peripheral wall of the first limiting groove 14, which can also avoid the rotation of the force transmission connecting piece 3 relative to the upper connecting piece 1 and the lower connecting piece 2 around the vertical direction, and further improve the locking stability of the force transmission connecting piece 3 to the upper connecting piece 1 and the lower connecting piece 2.

[0114] S3: insert the plug plate 432 into the socket 4314 protruding out of the upper connecting piece 1 and the lower connecting piece 2, and then fix the plug plate 432 to the upper connecting piece 1 and the lower connecting piece 2 by the fastener 433 to connect the upper connecting piece 1 and the lower connecting piece 2.

[0115] In this way, the connection assembly 42 can conveniently realize the connection and locking of the upper connecting piece 1 and the lower connecting piece 2, and can enhance the pressing locking force between the force transmission connecting piece 3 and the upper connecting piece 1 and the lower connecting piece 2.

[0116] Embodiment 2

[0117] Based on the embodiment 1, the embodiment further provides a modular building structure, which comprises the connection joint in the embodiment 1, and further comprises an upper module and a lower module. The upper module and the lower module can be connected into the modular building structure through the connection joint.

[0118] One side and the top of the upper connecting piece 1 are respectively welded to the end of the adjacent bottom beam and column in the upper module, so as to fix the upper connecting piece 1 to the bottom corner of the upper module.

[0119] One side and the bottom of the lower connecting piece 2 are respectively welded to the end of the adjacent top beam and column in the lower module, so as to fix the lower connecting piece 2 to the top corner of the lower module.

[0120] The upper connecting piece 1 and the lower connecting piece 2 can be opposite to each other and connected through the force transmission connecting piece 3 and the locking mechanism 4, so as to connect the vertically opposite upper module and lower module.

[0121] Thus, the modular building structure can weld the upper connecting piece 1 to the upper module, and weld the lower connecting piece 2 to the lower module, and connect the locking by the upper connecting piece 1 and the lower connecting piece 2 opposite to each other, the force transmission connecting piece 3 and the locking mechanism 4, so as to realize the corner connection of the connecting joint for the upper module and the lower module, and ensure the connection strength of the joint.

[0122] In the description of the present application, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0123] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated. It can be mechanical connection, or electrical connection. It can be directly connected, or indirectly connected through intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0124] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature is "above", "above" and "above" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "below", "below" and "below" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0125] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0126] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can modify, modify, replace and modify the above-described embodiments within the scope of the present application.

Claims

1. A modular building structure self-locking connection node, characterized in that: It comprises an upper connecting member (1), a lower connecting member (2), a force transmission connecting member (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; a second slot (21) extending along the first horizontal direction (A) is provided on the top of the lower connecting member (2); The force-transmitting connection member (3) is oriented vertically; After the upper portion of the force transmission connection member (3) is capable of being inserted into the first slot (11) movably along the first horizontal direction (A), and the lower portion is capable of being inserted into the second slot (21) movably along the first horizontal direction (A), the locking mechanism (4) is capable of connecting the upper connection member (1) and the lower connection member (2), and pushing 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) is pressed against the side wall of the first end of the second slot (21) in the first horizontal direction (A); A first limiting groove (14) is formed on the upper portion of the side wall of the first end of the first slot (11) in the first horizontal direction (A) and faces the second end of the first slot (11); A second limiting groove (222) is formed at the lower portion of the side wall of the first end of the second slot (21) in the first horizontal direction (A) and faces 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); 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 rebound state.

2. The modular building structure self-locking connection node according to claim 1, characterized in that: 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: 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) between the first end of the second slot (21) and the tenon sleeve (41); When the elastic member is in a rebound state, it can push the mortise (41) to move along the first horizontal direction (A) toward the first end of the second slot (21), so that the mortise (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 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 (42) downward to a position below the tenon sleeve (41), so that the baffle (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) 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 both are 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); 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), wherein 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 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 tightly embrace the lower peripheral wall of the main body (32), and the second arc groove (412) can tightly embrace 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 5, characterized in that: The connecting assembly (43) includes a pushing member (431), a plug plate (432) and a fastener (433); The pushing member (431) is extended along the first horizontal direction (A), and 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 open 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 passed 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 (32); the longitudinal cross-section of the combination of the first limiting platform (33) and the main body (32) is a T-shape that fits in the first slot (11); the upper portions of the first limiting platform (33) and the main body (32) 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 further 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) comprises, from top to bottom, a first plate (4311), a second plate (4312), and a third plate (4313), all extending 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 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-shaped 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 mortise (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 hold the peripheral wall of the main body (32) 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).

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