A connection node between the vertical structure and the horizontal structure of a prefabricated building

Abstract

The present invention relates to the field of prefabricated buildings, and specifically refers to a connection node between the vertical structure and the horizontal structure of a prefabricated building. A fixing mechanism is provided at the joint surface between the horizontal structure and the vertical structure, and the vertical structure is fixed to the horizontal structure by a hook-shaped telescopic fixing rod in the horizontal and vertical directions. The connection node of the present invention has a simple structure, is convenient to manufacture, is quick to assemble, and has a high fixing strength.

Description

Technical Field

[0001] The present invention relates to prefabricated buildings, specifically to connection nodes between precast vertical structures and horizontal structures. Background Art

[0002] With the progress of society and the convenience of life, prefabricated buildings have developed rapidly. In prefabricated buildings, vertical structures and horizontal structures are generally also precast, and are connected together through installation and fixation to achieve rapid assembly. In the assembly process, how to quickly connect precast vertical structures and horizontal structures is also a technical problem that needs to be solved. Chinese Patent 202210417902.X discloses a floor slab structure firmly connected to a precast wall panel. By providing an installation cavity inside the floor slab, an active wheel, an active rope, a driven wheel, and a driven rope are installed in the installation cavity, and a locking rod is inserted into a locking hole in the wall panel to fix the wall panel. Although the technical solution of this patent plays a certain role in fixing the wall panel, the stable connection structure is relatively complex, and since only the end of a locking rod on the driven wheel can be inserted into the bottom of the wall panel for position limitation, the fixing effect is relatively poor. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a connection node between a vertical structure and a horizontal structure of a prefabricated building. By providing a fixing mechanism at the connection of the horizontal structure and fixing holes in the vertical structure, firm connection between precast horizontal structures can be achieved. The fixing mechanism of the present invention has a simple structure, is easy to install, and has a good fixing effect.

[0004] In response to the above technical problem, the technical solution provided by the present invention is a connection node between a vertical structure and a horizontal structure of a prefabricated building, including a horizontal structure and a vertical structure connected thereto. A precast groove is provided on the horizontal structure, and installation grooves are respectively provided on the side end faces of the horizontal structure on both sides of the precast groove. Fixing mechanisms are respectively provided in the installation grooves on both sides of the precast groove. The fixing mechanism includes several groups of fixing mechanism units arranged adjacent to or spaced apart from each other. The fixing mechanism unit includes a support frame, and at least one horizontal fixing rod that can horizontally expand and contract relative to the installation groove is provided on the support frame. One end of the horizontal fixing rod extends out of the installation groove and is located in the precast groove. A vertical fixing rod is provided on the horizontal fixing rod located in the precast groove, and the vertical fixing rod can vertically expand and contract relative to the horizontal fixing rod. The free end faces of the horizontal fixing rod and the vertical fixing rod are respectively arc-shaped end faces. A corresponding horizontal fixing hole is provided at the position of the vertical structure insertion end relative to the horizontal fixing rod, and a vertical fixing hole is provided in the horizontal fixing hole relative to the vertical fixing rod. An anti-limiting arc-shaped chute that can be squeezed during installation to force the horizontal fixing rod to retract is provided on the vertical structure below the horizontal fixing hole.

[0005] Preferably, one end of the horizontal fixing rod located in the installation groove is connected to the support frame through a spring; the vertical fixing rod is fixedly connected to the horizontal fixing rod through a spring.

[0006] Preferably, a long strip groove is arranged along the length direction of the horizontal fixing rod, and one end of the vertical fixing rod is arranged in the long strip groove through the spring.

[0007] Preferably, a guide rail block is arranged below the horizontal fixing rod, a sliding groove is arranged on the guide rail block, and the horizontal fixing rod is horizontally displaceably arranged on the sliding groove.

[0008] Preferably, the opening end of the horizontal fixing hole is a horn-shaped arc surface structure.

[0009] Preferably, grouting grooves are respectively arranged along the lengths of the fixed horizontal hole and the vertical horizontal hole, and the two grouting grooves are communicated; an upwardly inclined exhaust hole communicating with the outside of the vertical structure is opened in the grouting groove on the vertical fixing hole.

[0010] Preferably, after the vertical structure and the horizontal structure are fixed, grouting material is filled between the horizontal fixing plate, the horizontal fixing hole, the vertical fixing hole and the vertical fixing plate.

[0011] Preferably, the vertical fixing hole communicates with the bottom end of the vertical structure.

[0012] Preferably, when there are two or more horizontal fixing rods of the fixing mechanism unit, the horizontal fixing rods are arranged in a staggered manner.

[0013] Preferably, when there are three horizontal fixing rods of the fixing mechanism unit, they are arranged in a triangular staggered manner; two adjacent fixing mechanism units are arranged in a relatively inverted state.

[0014] Preferably, when there are two or more horizontal fixing rods of the fixing and mechanism unit, one end of the horizontal fixing rods shares a spring.

[0015] The connection node of the precast horizontal structure of the present invention forms a hook shape through the telescopic horizontal fixing rod and vertical fixing rod to fix the vertical structure, and has a simple structure and good fixing effect. By combining the grouting technology, the grouting material enters the horizontal fixing hole and the vertical fixing hole through the grouting groove and the exhaust hole, and a reinforced concrete structure is formed in the installation groove, the precast groove and the fixing hole, so that the horizontal structure forms an integrated structure and the fixing is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the horizontal structure and the fixing mechanism of the present invention.

[0017] Figure 2It is a schematic cross-sectional structure diagram of the vertical structure of the present invention.

[0018] Figure 3 It is a schematic diagram of the fixing mechanism after the combination of the horizontal structure and the vertical structure of the present invention.

[0019] Figure 4 It is a schematic cross-sectional structure diagram of the horizontal fixing hole.

[0020] Figure 5 It is a schematic diagram of the structural relationship between the horizontal fixing rod and the vertical fixing rod.

[0021] Figure 6 It is a schematic diagram of the staggered arrangement when there are 3 horizontal fixing rods in Embodiment 2. Figure A is a regular triangular structure, Figure B is an inverted triangular structure, and the combination of Figure A and Figure B is the inverted structure setting of adjacent fixing mechanism units. Specific embodiments

[0022] For the above technical solutions, preferred embodiments are now given and specifically described in conjunction with the drawings.

[0023] Embodiment 1

[0024] Refer to Figures 1 to 5 , the connection node between the vertical structure and the horizontal structure of the prefabricated building includes a horizontal structure 1, a vertical structure 2, and a fixing mechanism. A prefabricated groove for installing the vertical structure 2 is provided on the horizontal structure 1, and installation grooves 10 are provided in the horizontal structure on both sides of the prefabricated groove. Fixing mechanisms are respectively installed in the installation grooves 10 on both sides of the prefabricated groove, and the fixing mechanisms located on both sides of the prefabricated groove can be arranged relatively or staggered. A grouting hole is provided on the horizontal structure 1, and the grouting hole communicates with the installation groove 10 in the horizontal structure for grouting.

[0025] The fixing mechanism includes several groups of fixing mechanism units arranged at intervals. Two adjacent fixing mechanism units can be independently arranged or can be fixedly connected through a connection structure, such as a connecting rod or a connecting bracket, etc. The fixing mechanism unit includes a support frame (not shown) fixedly arranged in the installation groove 10, a horizontal fixing rod 11, a first spring 12, a guide rail block 13, and a vertical fixing rod 14 horizontally arranged on the support frame. On the vertical structure 2, horizontal fixing holes 21 and vertical fixing holes 22 are provided corresponding to the horizontal fixing rod 11 and the vertical fixing rod 14 of the fixing mechanism unit.

[0026] Fixing mechanism unit: A horizontally arranged horizontal fixing rod 11 is fixedly arranged on the support frame. The tail end of the horizontal fixing rod 11 is fixedly connected to the support frame through a first spring 12. The free end face of the horizontal fixing rod 11 is a circular arc structure or a rolling roller is provided at the free end face. When the first spring 12 is in a normal state, the free end of the horizontal fixing rod 11 extends out of the support frame.

[0027] A guide rail block 13 with a chute is provided in the support frame. A horizontal fixed rod 11 is horizontally arranged on the guide rail block 13 and can horizontally linearly displace along the chute of the guide rail block 13 under the action of an external force. A long slot extending to one side of the free end is opened along the length direction of the horizontal fixed rod 11. A vertical fixed rod 14 is arranged in the long slot near the free end side of the horizontal fixed rod 11. The bottom end of the vertical fixed rod 14 is fixed in the long slot of the horizontal fixed rod 11 through a second spring 15. The free end face of the vertical fixed rod 14 is in an arc structure or is provided with a rollable roller on the free end face, and the free end face of the vertical fixed rod 14 extends beyond the top of the free end of the horizontal fixed rod 11.

[0028] A horizontal fixing hole 21 is opened at the corresponding position of the horizontal fixed rod 11 on the vertical structure 2, and a horizontal grouting groove 211 is opened in the horizontal fixing hole 21. The inner wall of the opening end of the horizontal fixing hole 21 at the position corresponding to the vertical fixed rod on the horizontal fixed rod is set as an arc surface. When the horizontal fixed rod 11 enters the opening of the horizontal fixing hole 21, the free end of the vertical fixed rod 14 is squeezed by the arc surface of the horizontal fixing hole, forcing it to retract towards the long slot of the horizontal fixed rod as the horizontal fixed rod deepens in the horizontal fixing hole.

[0029] A vertical fixing hole 22 penetrating the bottom end of the vertical structure is opened at the position corresponding to the vertical fixed rod 14 in the horizontal fixing hole 21, and a grouting groove is opened in the vertical fixing hole 22. The grouting groove of the horizontal fixing hole 21 is communicated with the grouting groove of the vertical fixing hole 22. An obliquely upward exhaust hole 23 is opened between the vertical fixing hole 22 and the surface of the vertical structure 2, and the exhaust hole 23 communicates the grouting groove of the vertical fixing hole 22 with the outside of the vertical structure 2. A limiting arc chute 24 is arranged between an appropriate distance below the horizontal fixing hole 21 of the vertical structure 2 and the end of the vertical structure. The upper end of the limiting arc chute 24 is located below the horizontal fixing hole 21 on the surface of the vertical structure, and the lower end is located inside the surface of the vertical structure. When the vertical structure is inserted, the lower end of the limiting arc chute 24 can just abut against the free end of the horizontal fixed rod 11.

[0030] The horizontal fixing hole and the vertical fixing hole can be square holes or round holes, and the grouting groove can be a square groove or an arc groove, depending on the convenience of processing.

[0031] Vertical steel bars 16 are respectively arranged on the precast grooves of the horizontal structure 1 corresponding to the opening ends of the vertical fixing holes 22 at the bottom end of the vertical structure. The top ends of the vertical steel bars 16 are located below the horizontal fixed rod. To facilitate assembly and make it easy for the steel bars 16 to be inserted into the vertical fixing holes 22, the opening at one end of the vertical fixing hole 22 at the bottom of the vertical structure can be in a flared structure.

[0032] When assembling, the bottom end of the prefabricated vertical structure 2 is inserted into the prefabricated groove on the horizontal structure 1, and the lower end of the limiting arc-shaped sliding groove 24 on the vertical structure 2 abuts against the free end of the horizontal fixing rod 11. As the vertical structure 2 moves downward, the limiting arc-shaped sliding groove 24 presses the horizontal fixing rod 11 to move horizontally into the installation groove 10, and the vertical structure 2 is compressed under the extrusion force of the first spring 12; until the horizontal fixing rod 11 moves to the horizontal fixing hole 21, and then the horizontal fixing rod 11 loses its abutting force, and under the elastic force of the first spring 12, the horizontal fixing rod 11 The horizontal fixing rod 11 extends into the horizontal fixing hole 21. As the horizontal fixing rod 11 extends into the vertical structure, the arc-shaped inner wall of the open end of the horizontal fixing hole 21 presses the vertical fixing rod 14, causing it to retract into the long groove in the horizontal fixing rod 11 and finally enter the terminal of the horizontal fixing hole 21. When the horizontal fixing rod 11 enters the terminal, the vertical fixing rod 14 is at the vertical fixing hole 22. Under the action of the second spring 15, the vertical fixing rod 14 extends into the vertical fixing hole 22, forming a hook-shaped fixing structure in the vertical structure 2, and fastening the horizontal structure and the vertical structure together. Then, grouting is injected into the installation groove through the grouting hole. The grouting material enters the vertical fixing hole 22 along the long groove on the horizontal fixing rod 11 and the grouting groove on the horizontal fixing hole 21. Because of the existence of the oblique upward exhaust hole 23, when the grouting material enters the horizontal fixing hole 21, the exhaust hole 23 is always in an exhaust state until the grouting material fills the vertical fixing hole 22 and the horizontal fixing hole 21, and then the exhaust hole 23 is closed. The horizontal fixing rods, vertical fixing rods and steel bars in the horizontal fixing holes and the vertical fixing holes are respectively combined with grouting materials to form a reinforced concrete structure, so that the horizontal structure and the vertical structure are more tightly combined.

[0033] The fixing mechanisms on both sides of the vertical structure are staggered to avoid the horizontal fixing holes on both sides of the displacement vertical structure from being connected, and the horizontal fixing rods on both sides affecting each other after penetrating into the horizontal fixing holes.

[0034] Example 2

[0035] Improved on the basis of Example 1. Two horizontal fixing rods 11 are staggered in both horizontal and vertical directions. The horizontal fixing holes 21 of the corresponding horizontal fixing rods 11 are also arranged accordingly. By staggering the arrangement, the upper and lower horizontal fixing holes can be prevented from affecting the upper horizontal fixing rods.

[0036] The tail ends of the two horizontal fixing rods 11 can be connected to a first spring separately, or the two horizontal fixing rods 11 can share a first spring, and the structure is as follows: the tail ends of the two horizontal fixing rods 11 are fixedly connected by a connecting rod, and the first spring is connected to the connecting rod. Corresponding to the two horizontal fixing rods 11, limited arc-shaped sliding grooves are respectively set on the vertical structure.

[0037] The vertical structure and the horizontal structure are fixed up and down at the joint by combining two horizontally fixed rods arranged with dislocation and horizontal fixing holes.

[0038] The horizontally fixed rods 11 can also be set to three, see Figure 6 , and the three are arranged in an equilateral triangle or an inverted triangle, so that the three horizontally fixed rods 11 are arranged with dislocation. When there are three horizontally fixed rods, the spaced fixing mechanism units are arranged in reverse. For example, the three horizontally fixed rods of the first fixing mechanism unit are arranged in an equilateral triangle structure, and the three horizontally fixed rods of the second mechanism unit adjacent to the first fixing mechanism unit are arranged in an inverted triangle structure. With such a structure setting, it can be ensured that the forces on the upper and lower sides of the joint between the vertical structure and the horizontal structure are relatively uniform.

Claims

1. An assembly building vertical structure and horizontal structure connection node, including a horizontal structure and a vertical structure connected thereto. A prefabricated groove is provided on the horizontal structure, and installation grooves are respectively provided on the side end faces of the horizontal structure on both sides of the prefabricated groove. Characterized in that, Fixing mechanisms are respectively arranged in the installation grooves on both sides of the prefabricated groove. The fixing mechanism includes a plurality of groups of fixing mechanism units arranged adjacent to or spaced apart from each other. The fixing mechanism unit includes a support frame, and at least one horizontal fixing rod that can horizontally expand and contract relative to the installation groove is arranged on the support frame. Before assembly, one end of the horizontal fixing rod extends out of the installation groove and is located in the prefabricated groove; a vertical fixing rod is arranged on the horizontal fixing rod located in the prefabricated groove. One end of the horizontal fixing rod located in the installation groove is connected to the support frame through a first spring; the vertical fixing rod and the horizontal fixing rod are fixedly connected through a second spring, and the vertical fixing rod can vertically expand and contract relative to the horizontal fixing rod. Before assembly, the vertical fixing rod is located in the prefabricated groove; the free end faces of the horizontal fixing rod and the vertical fixing rod are respectively arc-shaped end faces; a corresponding horizontal fixing hole is provided at the position of the vertical structure insertion end relative to the horizontal fixing rod, and a vertical fixing hole penetrating the bottom end of the vertical structure is provided at the position corresponding to the vertical fixing rod in the horizontal fixing hole. Vertical steel bars are provided at the bottom of the prefabricated groove corresponding to the vertical fixing hole; the opening end of the horizontal fixing hole is a trumpet-shaped arc surface structure; a limiting arc-shaped sliding groove that can be squeezed to force the horizontal fixing rod to retract during installation is provided on the vertical structure below the horizontal fixing hole; grouting grooves are respectively arranged along the lengths of the fixed horizontal hole and the vertical horizontal hole, and the two grouting grooves are communicated; an obliquely upward exhaust hole communicating with the outside of the vertical structure is provided in the grouting groove on the vertical fixing hole.

2. The assembly building vertical structure and horizontal structure connection node according to claim 1, Characterized in that, A long strip groove is arranged along the length direction of the horizontal fixing rod, and one end of the vertical fixing rod is arranged in the long strip groove through the second spring.

3. The assembly building vertical structure and horizontal structure connection node according to claim 1, Characterized in that, A guide rail block is arranged below the horizontal fixing rod, and a sliding groove is arranged on the guide rail block. The horizontal fixing rod is horizontally displaceably arranged on the sliding groove.

4. The assembly building vertical structure and horizontal structure connection node according to claim 1, Characterized in that, After the vertical structure and the horizontal structure are fixed, grouting material is filled between the horizontal fixing rod, the horizontal fixing hole, the vertical fixing hole and the vertical fixing rod.

5. The assembly building vertical structure and horizontal structure connection node according to claim 1, Characterized in that, When more than two horizontal fixing rods of the fixing mechanism unit are provided, the horizontal fixing rods are arranged in a staggered manner.

6. The assembly building vertical structure and horizontal structure connection node according to claim 5, Characterized in that, When the number of the horizontal fixing rods of the fixing mechanism unit is set to three, they are arranged in a triangular staggered manner; two adjacent fixing mechanism units are arranged in a relatively inverted state.

7. The connection node between the vertical structure and the horizontal structure of the prefabricated building according to claim 6, characterized in that when the number of the horizontal fixing rods of the fixing and mechanism unit is more than two, one end of the horizontal fixing rods shares a first spring.

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