Shifting piece type column-column connecting joint for modular building

Abstract

The utility model provides a shifting piece type column-column connecting node for a modular building, which comprises a connecting bolt, the bolt is connected with the bottom of an upper layer column of the modular building, and the reliable connection of the node can be realized by screwing the bolt. The bottoms of the two shifting pieces are fixed to the connector through shifting piece bolts, and the shifting pieces can only rotate in the plane. When the node is installed, the connector needs to pass through the hole of the connecting plate, and the upper and lower connecting structures of the node are locked through the shifting piece. According to the utility model, column-column connection is adopted for a modular building, a node connection technology that the plectrum assists in hoisting and positioning and only one connecting bolt needs to be tightened during installation can be provided, the node is good in stress performance and high in bearing capacity, the construction operation is simple, the node connection reliability can be improved, and the labor cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to modularization building. BACKGROUND

[0002] Modular Integrated Construction (MiC) is a highly integrated prefabricated assembly system, with the advantages of short construction period, green environmental protection, small dependence on labor, etc. It is the development focus and the latest trend of China's construction industry. In the whole life cycle of modular building, the connection technology between modules becomes the primary concern, and the connection reliability directly affects the overall safety of the structure. However, the existing connection technology is still traditional, and manual adjustment and positioning are required during installation. Traditional bolt connection method is generally used, which consumes more resources, requires a large construction space, has complicated construction steps, a long operation period, and is difficult to truly play the advantages of modular building in high industrialization, standardization and flexibility. Therefore, it is necessary to reasonably optimize and design the connection node. The existing technology mainly has the following problems:

[0003] Complex installation process: The components of modular building are mostly prefabricated in the factory and installed on site. During installation, the connection between modules requires manual initial alignment, manual adjustment and positioning, and manual alignment and tightening. Excessive manual operation not only leads to low installation efficiency and long time consumption, but also increases the risk of loose connection or inaccurate positioning.

[0004] Complicated and time-consuming construction steps: The connection method in modular building mostly uses bolt connection, and the time for on-site installation and adjustment often accounts for a large part of the on-site construction period. Moreover, bolt tightening and other operations are often required at the connection, which often has problems such as long assembly time, complex process, and construction risk, and has high requirements for the number of workers and construction technology on site

[0005] Insufficient flexibility and detachability: In the existing modular building connection system, many connection designs lack the necessary flexibility and detachability. Fixed connection methods are not conducive to the reconfiguration or replacement of modules, limiting the adaptability and sustainability of the building, especially in scenarios requiring building reconstruction, expansion or future modification. In addition, fixed connection methods may cause structural damage when disassembled or require more complex disassembly methods, thereby increasing disassembly costs and time and reducing the reuse rate of building materials.

[0006] Deficiency in stress performance: The existing connection nodes of modular building also have certain defects in stress performance, such as connection biasing to hinge and difficulty in transmitting bending moment, or low connection bearing capacity only suitable for low-rise buildings, or not conducive to structural safety. SUMMARY

[0007] The utility model discloses a kind of for modular building's push piece type column-column, for modular building's push piece type column-column connection node-1-

[0008] Connection node, characterized in that: including upper column, lower column and node connection system.

[0009] The lower end of the upper column is an upper column lower end plate. The upper column lower end plate has a square hole at the lower end. The upper column has a limiting plate inside. The space S between the limiting plate and the upper column lower end plate accommodates an adjusting nut. The upper column has an operating hole on the side. The operating hole allows the space S to communicate with the outside of the upper column.

[0010] The node connection system includes a connector, two push pieces, two shafts and a connecting screw. The connector has a connecting screw at the upper end and a reverse U-shaped structure at the lower end. The two push pieces are hinged to the reverse U-shaped structure by the two shafts. When not subjected to external force, one end of the push piece is hinged inside the reverse U-shaped structure, and the other end extends outside the reverse U-shaped structure. When subjected to external force, one end of the push piece is hinged inside the reverse U-shaped structure, and the other end turns into the reverse U-shaped structure.

[0011] The limiting plate and the upper column lower end plate both have through holes, and the connecting screw of the node connection system passes through the two through holes and is screwed into the adjusting nut in the space S.

[0012] The upper end of the lower column is a lower column upper end plate. The lower column upper end plate has a square through hole. During assembly, the connector at the lower end of the upper column is inserted into the square through hole, and the adjusting nut is tightened to move the connector upward in the square hole until the push piece tightly presses the lower end of the lower column upper end plate.

[0013] Further, the upper column and the lower column are square columns. The operating hole is a square hole on the side of the upper column, through which a wrench can be inserted into the space S to tighten the adjusting nut.

[0014] Further, the cross section of the push piece is a parallelogram. After the two push pieces are hinged to the connector, they form a V-shaped structure. When the included angle of the V-shaped structure is the largest, the upper end of the push piece is a wedge-shaped locking tongue structure exposed outside the connector.

[0015] The technical effect of the utility model is self-evident. The push piece is rotated to retract and pop out, which realizes the auxiliary positioning of column-column connection and greatly simplifies the node connection technology of construction operation. The node has good stress performance, and only one connecting bolt needs to be tightened to complete the connection work on the construction site, providing a more efficient, accurate and reliable connection method, which significantly improves the connection technology of modular buildings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1Structure diagram of the present application;

[0017] Figure 2 Structure diagram of the upper and lower column;

[0018] Figure 3 Structure diagram of the node connecting system;

[0019] Figure 4 Structure diagram of the connecting head;

[0020] Figure 5 Schematic diagram of the connecting process in perspective, wherein a, b, c, d are schematic diagrams of the docking stage respectively;

[0021] Figure 6 Schematic diagram of the connecting process in cross section, wherein e, f, g, h are schematic diagrams of the docking stage respectively.

[0022] In the figure: upper column (1), lower end plate of upper column (101), square hole (1011), limiting plate (102), operating hole (103), lower column (2), upper end plate of lower column (201), a kind of push piece type column-column connecting node for modular building-2

[0023] Square through hole (2011), node connecting system (3), connecting head (301), base plate (3011), side plate (3012), hinged hole (3013), push piece (302), pivot (303), connecting screw (304), adjusting nut (4) DETAILED DESCRIPTION

[0024] The present application will be further described below in conjunction with the drawings and examples, but should not be understood as limiting the above-mentioned subject matter of the present application to the following examples. Various substitutions and modifications can be made according to ordinary technical knowledge and conventional means in the art without departing from the above-mentioned technical idea of the present application, and all such substitutions and modifications shall be included in the scope of protection of the present application.

[0025] Example 1:

[0026] Referring to Figure 1 A push piece type column-column connecting node for modular building, characterized in that it comprises an upper column 1, a lower column 2 and a node connecting system 3.

[0027] The lower end of the upper column 1 is a lower end plate 101 of the upper column. The lower end plate 101 of the upper column has a square hole 1011 at the lower end. The upper column 1 has a limiting plate 102 inside. The space S accommodating the adjusting nut 4 is between the limiting plate 102 and the lower end plate 101 of the upper column. The upper column 1 has an operating hole 103 on the side. The operating hole 103 makes the space S communicate with the outside of the upper column 1.

[0028] The node connection system 3 includes a connecting head 301, two push plates 302, two rotating shafts 303 and a connecting screw 304. The connecting head 301 has the connecting screw 304 at the upper end and a reverse U-shaped structure at the lower end. In the reverse U-shaped structure, the two push plates 302 are hinged by the two rotating shafts 303. When not subjected to external force, one end of the push plate 302 is hinged in the reverse U-shaped structure and the other end extends out of the reverse U-shaped structure. When subjected to external force, one end of the push plate 302 is hinged in the reverse U-shaped structure and the other end turns into the reverse U-shaped structure.

[0029] The limiting plate 102 and the upper end plate 101 of the lower column both have through holes, and the connecting screw 304 of the node connection system 3 penetrates the two through holes and is screwed into the adjusting nut 4 in the space S.

[0030] The upper end of the lower column 2 is the upper end plate 201 of the lower column. The upper end plate 201 of the lower column has a square through hole 2011. In the embodiment, the square through hole 2011 matches the shape of the upper end of the connecting head 301, the connecting head 301 is located in the square through hole 2011, and the connecting head 301 can move up and down in the square through hole 2011 to prevent the connecting head 301 from rotating.

[0031] Referring to Figure 5 and 6 When assembling, the connecting head 301 at the lower end of the upper column 1 is inserted into the square through hole 2011, and the adjusting nut 4 is screwed to move the connecting head 301 upward in the square hole 1011 until the push plate 302 tightly abuts against the lower end of the upper end plate 201 of the lower column. Specifically,

[0032] Referring to Figure 5 part (a) and Figure 6 part (e), when the connecting head 301 of the node connection system contacts the upper end plate 201 of the lower column, the two push plates 302 combined into a V shape are compressed by the square through hole 2011;

[0033] Referring to Figure 5 part (b) and Figure 6 part (f), the push plate 302 is retracted into the connecting head 301, so that the connecting head 301 can pass through the square through hole 2011;

[0034] A push plate type column-column connection node for modular buildings-3-

[0035] Referring to Figure 5 part (c) and Figure 6 part (g), after the push plate 302 passes through the square through hole 2011, the two push plates 302 combined into a V shape are unfolded below the upper end plate 201 of the lower column;

[0036] Referring to Figure 5part (d) and Figure 6 In part (h), by tightening the adjusting nut 4 with a wrench, the connecting screw 304 drives the connecting head 301 to rise until the two paddles 302 top the lower column upper end plate 201, so as to achieve locking.

[0037] Example 2:

[0038] The main structure of this embodiment is the same as that of Embodiment 1. Further, see [link to Embodiment 1]. Figure 2 The upper column 1 and the lower column 2 are square columns. The operating hole 103 is a square hole on one side of the upper column 1, allowing a wrench to be inserted into the space S to turn the adjusting nut 4.

[0039] Example 3:

[0040] The main structure of this embodiment is the same as that of Embodiment 1 or 2. Further, see [link / reference]. Figure 3 and Figure 4 ,

[0041] The main body of the connector 301 is an inverted U-shaped structure composed of a base plate 3011 and two side plates 3012. The upper end of the base plate 3011 is connected to the connecting screw 304, and there is a slot between the two side plates 3012 for hinged paddles 302. Each side plate 3012 has two hinge holes 3013 for the passage of the rotating shaft 303. The cross-section of the paddles 302 is parallelogram. After the two paddles 302 are hinged to the hinge holes 3013 on the connector 301 through the rotating shaft 303, their lower ends contact each other and limit each other to form a V-shaped structure. When the included angle of the V-shape is at its maximum, the upper end of the paddle 302 is a wedge-shaped locking tongue structure protruding from the outside of the connector 301. When the paddle 302 is pressed, the included angle of the V-shape gradually decreases to retract into the interior of the connector 301.

Claims

1. A push-plate column-to-column connection node for modular construction, characterized by: The upper column (1), the lower column (2) and the node connecting system (3) are included. The lower end of the upper column (1) is an upper column lower end plate (101); the lower end of the upper column lower end plate (101) has a square hole (1011); the inside of the upper column (1) has a limiting plate (102); the space S between the limiting plate (102) and the upper column lower end plate (101) accommodates an adjusting nut (4); the side of the upper column (1) has an operation hole (103); the operation hole (103) makes the space S communicate with the outside of the upper column (1); The node connecting system (3) includes a connecting head (301), two push pieces (302), two rotating shafts (303) and a connecting screw (304); the upper end of the connecting head (301) is connected with the connecting screw (304), and the lower end is a reverse U-shaped structure; in the reverse U-shaped structure, the two push pieces (302) are hinged through the two rotating shafts (303); when not subjected to external force, one end of the push piece (302) is hinged in the reverse U-shaped structure, and the other end extends out of the reverse U-shaped structure; when subjected to external force, one end of the push piece (302) is hinged in the reverse U-shaped structure, and the other end turns into the reverse U-shaped structure; The limiting plate (102) and the upper column lower end plate (101) both have through holes, the connecting screw (304) of the node connecting system (3) penetrates the two through holes, and is screwed into the adjusting nut (4) in the space S; The upper end of the lower column (2) is a lower column upper end plate (201); the lower column upper end plate (201) has a square through hole (2011); during assembly, the connecting head (301) at the lower end of the upper column (1) is inserted into the square through hole (2011), the adjusting nut (4) is screwed, the connecting head (301) moves upward in the square hole (1011), and the push piece (302) is tightly pressed against the lower end of the lower column upper end plate (201).

2. A push-plate column-to-column connection node for modular construction according to claim 1, characterized in that: The upper column (1) and the lower column (2) are square columns; the operation hole (103) is a square hole in one side of the upper column (1), and a wrench is inserted into the space S to screw the adjusting nut (4).

3. The push-together column-to-column connection node for modular construction of claim 1, wherein: The cross section of the push piece (302) is a parallelogram; after the two push pieces (302) are hinged on the connecting head (301), a V-shaped structure is formed; when the included angle of the V-shaped structure is the largest, the upper end of the push piece (302) is a wedge-shaped lock tongue structure exposed outside the connecting head (301).

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