A self-locking modular house connection node and node connection method

Abstract

The present invention relates to the field of modular housing construction, and specifically refers to a self-locking modular housing connection node and a node connection method, including an upper module and a lower module respectively spliced ​​by four module units, a self-locking node disk is arranged between the upper and lower modules, and the two sides of the node disk are symmetrically provided with cross-intersecting limit plates and a radial V-shaped groove along the edge of the disk body, the module unit is composed of a module beam, a module column and a node box, and a node box surface opposite to the module column is provided with a radial protrusion on the node box, and the radial protrusions of the four module units of each layer of the module are spliced ​​to form a circle, and the limit plates of the node disk are inserted into the splicing seams between the corresponding module units, and the radial protrusions on the node box are embedded in the radial V-shaped grooves on the node disk. The present invention realizes the horizontal positioning of the spliced ​​module units through the node disk, and horizontal shear resistance is achieved through the engagement of the radial tooth grooves, and the installation is convenient and efficient.

Description

Technical Field

[0001] The invention relates to the field of modular house construction, and in particular to a self-locking modular house connection node and a node connection method. Background Art

[0002] Modular building is an emerging building structure system. Node box structural connection is one of the commonly used modular house connection node forms. Each module unit in the modular building using this node form is mainly connected by module beams, module columns and node boxes. High-strength bolts or shear keys are mainly used between multiple module units to resist lateral forces. During construction, a large wrench operation space is required, and the construction difficulty is relatively high. Summary of the invention

[0003] The invention discloses a self-locking modular house connection node, which utilizes a self-locking node plate to perform horizontal positioning and shear resistance on each module unit, does not require lateral tightening of bolts, and is convenient and quick to assemble.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A self-locking modular house connection node, comprising an upper module, a lower module and a self-locking node plate located between the upper module and the lower module, wherein the upper module and the lower module are both formed by splicing four module units with the same structure;

[0006] A single module unit includes a module crossbeam, a module column and a node box. The cross sections of the module column and the module crossbeam are both rectangular. The cross section of the node box is larger than that of the module crossbeam and the module column. The module crossbeam and the module column are welded to the node box respectively. Radial protrusions are arranged at intervals of one quarter of a circle on the surface of the node box opposite to the surface where the module column is located. A through hole is provided on the node box along the length direction of the module column.

[0007] The self-locking node plate includes a circular plate body, and cross-shaped limit plates perpendicular to the plate body are symmetrically arranged on both sides of the plate body. The limit plates on each side of the plate body are divided into transverse limit plates and longitudinal limit plates. Radial V-shaped grooves are symmetrically arranged on the edges of both sides of the plate body.

[0008] The self-locking node disk is placed between the upper module and the lower module. The limit plate on the bottom surface of the node disk is correspondingly inserted into the joint between the corresponding module units in the lower module, and the radial protrusion on each module unit in the lower module is embedded in the corresponding radial V-groove on the bottom surface of the node box; the limit plate on the top surface of the node disk is correspondingly inserted into the joint between the corresponding module units in the upper module, and the radial protrusion on each module unit in the upper module is embedded in the corresponding radial V-groove on the top surface of the node box; the module units of the upper module and the module units of the lower module are fixedly connected with anti-overturning bolts.

[0009] The present invention also discloses a connection method for the above connection nodes, comprising the following steps:

[0010] Step 1): Complete the prefabrication of module units and self-locking node disks in the factory;

[0011] Step 2): Use four module units to horizontally splice the ends of the node boxes to form a lower module, and when splicing, the side of each node box with the radial protrusion faces upward;

[0012] Step 3): Place the node disk on top of the lower module, so that the limit plate at the bottom of the node disk is correspondingly embedded in the joints between the module units spliced ​​together in the lower module, and the radial protrusions on the node box of each module unit of the lower module are correspondingly embedded in the radial V-shaped grooves at the bottom of the node disk;

[0013] Step 4): Place a module unit in each of the four areas of the node disk divided by the transverse limit plate and the longitudinal limit plate, with the side of each module unit node box with the radial protrusion facing downward, so that each module unit node box fits with the corresponding limit plate, and the radial protrusion of each module node box is embedded in the radial V-shaped groove on the top surface of the node disk;

[0014] Step 5): Insert anti-overturning bolts into the through holes of the corresponding upper and lower module units to fix them.

[0015] The present invention can position four spliced ​​module units in four horizontal directions through the cross-shaped limit plates on the self-locking node disk, and realize the horizontal shear resistance of the module by bidirectional engagement of the radial V-shaped grooves on the node disk and the radial protrusions on the node box of the module unit. By adopting the connection nodes designed by the present invention, no space for wrench operation is required on the side when the modules are connected, which brings convenience to the connection and assembly.

[0016] Further considering the module's anti-jump and anti-overturning performance, the present invention also opens a large through hole in the non-bite area of ​​the module unit node box (i.e., the area where the radial protrusion is not provided), and uses the penetrating anti-overturning bolts to connect the upper and lower module units. The bolts here are only used for anti-overturning and play a pure tensile role. The bolts are located on the protruding outer corners of the node box, and there is no need to tighten the bolts laterally. The modular building is connected through the above structure, and its installation efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a single module unit in the embodiment;

[0018] Figure 2 It is a structural schematic diagram of a self-locking node disk in an embodiment;

[0019] Figure 3 An exploded diagram of the connection nodes for a modular house;

[0020] Figure 4 A schematic diagram of the assembly process of connecting nodes for modular houses;

[0021] Figure 5 Schematic diagram of modular house connection nodes after assembly.

[0022] Reference numerals:

[0023] 1. Module unit; 11. Module crossbeam; 12. Module column; 13. Node box; 14. Through hole; 15. Radial protrusion; 1A. First module unit of upper layer; 1B. Second module unit of upper layer; 1C. Third module unit of upper layer; 1D. Fourth module unit of upper layer; 1A', first module unit of lower layer; 1B', second module unit of lower layer; 1C', third module unit of lower layer; 1D', fourth module unit of lower layer;

[0024] 2. Node plate; 21. Plate body; 22. Radial V-shaped groove; 23. Horizontal limit plate; 24. Longitudinal limit plate.

[0025] 3. Anti-overturning bolts. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] This embodiment designs a self-locking modular house connection node for modular buildings, and also designs a self-locking node disk 2 for installation of the connection node, which is described in detail below with reference to the accompanying drawings.

[0028] The structure of the self-locking node disk 2 is as follows Figure 2 As shown, the disk body 21 is circular, and cross-shaped limit plates are symmetrically arranged on both sides of the disk body 21. The cross-shaped limit plates are perpendicular to the surface of the disk body 21. The cross-shaped limit plates on each side can be divided into a transverse limit plate 23 and a longitudinal limit plate 24 according to the direction. Radial V-shaped grooves 22 are also symmetrically arranged around the edges of both sides of the disk body 21.

[0029] like Figure 3 As shown, the self-locking modular house connection node is mainly composed of an upper module, a lower module and a self-locking node plate 2 located between the upper module and the lower module. The upper module and the lower module have the same structure, and are both composed of four module units 1 with the same structure. Figure 3In the figure, the four module units constituting the upper module are respectively the upper first module unit 1A, the upper second module unit 1B, the upper third module unit 1C and the upper fourth module unit 1D; the four module units constituting the lower module are respectively the lower first module unit 1A', the lower second module unit 1B', the lower third module unit 1C' and the lower fourth module unit 1D'.

[0030] The structure of a single module unit 1 is as follows Figure 1 As shown, a single module unit 1 is composed of a module beam 11, a module column 12 and a node box 13. The module column 12 and the module beam 11 in this embodiment are both made of square steel pipes with rectangular cross-sections. The node box 13 in this embodiment is a cube, and its cross-sectional area is larger than the cross-sectional area of ​​the module column 12 and the module beam 11. The module column 12 and the module beam 11 are both welded to the connecting surface of the node box 13 and are welded and fixed at one of the corners of the connecting surface. A radial protrusion 15 is provided on the surface of the node box 13 opposite to the surface where the module column 12 is located. The radial protrusions 15 on each node box 13 are concentrated in the middle and are distributed at intervals of one-quarter of the circumference, as shown in FIG. Figure 1 As shown, the area where the radial protrusion 15 on the node box 13 is located is the bite area, and the other area is the non-bite area. A through hole 14 is vertically opened on the corner of the non-bite area away from the center of the radial protrusion 15 on the node box 13.

[0031] When the modular house connection nodes are assembled using the above-mentioned module unit 1 and node plate 2, as shown in FIG. Figures 3 to 5 As shown, the specific assembly method is as follows:

[0032] Step 1): Complete the prefabrication of the module unit 1 and the self-locking node disk 2 in the factory;

[0033] Step 2): First, assemble the lower layer modules, that is, use four module units 1 so that the side with the radial protrusion 15 on the node box 13 faces upward, and assemble the four node boxes 13 horizontally so that the radial protrusions 15 on the four node boxes 13 can form a complete circle;

[0034] Step 3): Place the node disk 2 on top of the assembled lower module, and embed the transverse limit plate 23 on the bottom surface of the node disk 2 into the transverse joint seam of the four node boxes 13 in the lower module, and embed the longitudinal limit plate 24 on the bottom surface of the node disk 2 into the longitudinal joint seam of the four node boxes 13 in the lower module. At this time, the radial protrusions 15 on the top of the four node boxes 13 in the lower module are correspondingly embedded in the radial V-shaped grooves on the bottom surface of the node disk 2;

[0035] Step 4): Complete the assembly of the upper module, that is: place the four module units 1 constituting the upper module on the upper part of the node disk 2 in turn, so that the side with the radial protrusion 15 on the node box 13 of each module unit 1 in the upper module faces downward. When placing, place one module unit 1 in each of the four areas separated by the transverse limit plate 23 and the longitudinal limit plate 24, so that the node box 13 in each module unit 1 fits with the corresponding limit plate. After placement, the radial protrusion 15 on the node box 13 of each module unit 1 in the upper module is also correspondingly embedded in the radial V-groove on the top surface of the node disk 2; the node disk 2 and the node box 13 of each module unit 1 are interlocked with each other to play a role in the horizontal shear resistance of the module unit 1.

[0036] Step 5): Complete the installation of the anti-overturning bolts 3, that is, insert the anti-overturning bolts 3 into the through holes 14 between the upper and lower corresponding module units 1 in the upper module and the lower module for fixing.

[0037] After the assembly of each module unit 1 is completed using the node plate 2 as described above, the modular house connection node can be completed. However, for use in high-rise buildings, considering the need for module anti-jumping and anti-overturning, this embodiment opens a larger through hole 14 in the non-occlusal area of ​​each node box 13, and inserts an anti-overturning bolt 3 into the through hole 14 between the upper and lower corresponding module units 1. The bolt here only plays an anti-overturning role, so the through hole 14 can be opened large, which is convenient and can improve installation efficiency. In addition, the cross-section of the node box 13 in this embodiment is larger than that of the beam and the column, so the through hole 14 can be located at a corner of the edge, without the need to tighten the bolts laterally, which is easier to operate than the node box connection form in the prior art.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-locking modular house connection node, characterized in that: It includes an upper module, a lower module and a self-locking node disk located between the upper module and the lower module. Both the upper module and the lower module are composed of four module units with the same structure. A single module unit includes a module crossbeam, a module column and a node box. The cross sections of the module column, the module crossbeam and the node box are all rectangular. The cross section of the node box is larger than that of the module crossbeam and the module column. The module crossbeam and the module column are respectively welded to a corner of the node box connection surface. Radial protrusions are arranged at intervals of one-quarter of the circumference on the surface of the node box opposite to the surface where the module column is located. The radial protrusions are concentrated in the middle of the connection surface. The area where the radial protrusions on the node box connection surface are located is the bite area, and the other areas are non-bite areas. A through hole is provided at the corner of the non-bite area of ​​the node box away from the center of the radial protrusion along the length direction of the module column. The self-locking node plate includes a circular plate body, and cross-shaped limit plates perpendicular to the plate body are symmetrically arranged on both sides of the plate body. The limit plates on each side of the plate body are divided into transverse limit plates and longitudinal limit plates. Radial V-shaped grooves are symmetrically arranged on the edges of both sides of the plate body. The self-locking node disk is placed between the upper module and the lower module. The limit plate on the bottom surface of the node disk is correspondingly inserted into the joint between the corresponding module units in the lower module, and the radial protrusion on each module unit in the lower module is embedded in the corresponding radial V-groove on the bottom surface of the node box; the limit plate on the top surface of the node disk is correspondingly inserted into the joint between the corresponding module units in the upper module, and the radial protrusion on each module unit in the upper module is embedded in the corresponding radial V-groove on the top surface of the node box; the module units of the upper module and the module units of the lower module are fixedly connected with anti-overturning bolts.

2. The node connection method of the self-locking modular house connection node according to claim 1, characterized in that: The steps include: Step 1) Complete the prefabrication of module units and self-locking node disks in the factory; Step 2) The node box ends are horizontally spliced ​​together through four module units to form a lower module, and when splicing, the side of each node box with the radial protrusion faces upward; Step 3) Place the node disk on top of the lower module, so that the limit plate at the bottom of the node disk is correspondingly embedded in the joints between the module units spliced ​​together in the lower module, and the radial protrusions on the node box of each module unit of the lower module are correspondingly embedded in the radial V-shaped grooves at the bottom of the node disk; Step 4) Place a module unit in each of the four areas of the node disk divided by the transverse limit plate and the longitudinal limit plate, with the side of each module unit node box with the radial protrusion facing downward, so that each module unit node box fits with the corresponding limit plate, and the radial protrusion of each module node box is embedded in the radial V-shaped groove on the top surface of the node disk; Step 5) Insert anti-overturning bolts into the through holes of the upper and lower corresponding module units to fix them.

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