A precast component connection node

Abstract

The utility model relates to prefabricated component connecting equipment technical field especially relates to a prefabricated component connecting joint, including first embedded part, second embedded part and connecting piece, the first embedded part is buried in the floor, its one end to the direction away from the floor is provided with first positioning end, and the first positioning end is fixed with a plurality of first bolts to the direction away from the floor setting, and the second embedded part is buried in the stair, its one end to the direction close to the floor is provided with second positioning end, and the connecting piece is in abutment with first positioning end, has sliding insertion end and connecting through slot, and the second positioning end is fixed in sliding insertion end, the utility model discloses through the cooperation of second positioning end and sliding insertion end, realized the quick positioning of stair structure, reduced the alignment difficulty of stair structure, and the connecting through slot on connecting piece provides necessary adjustment allowance for installation, reduces the precision requirement of connecting joint production.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated component connection equipment technology, and in particular to a prefabricated component connection node. Background Technology

[0002] In the modernization of the construction industry, prefabricated buildings have become one of the mainstream development directions due to their advantages such as high construction efficiency, minimal environmental impact, and easy quality control. Among them, the connection nodes between prefabricated stairs and floor slabs are a key link concerning structural safety and construction efficiency.

[0003] Currently, common precast staircase connection methods mainly include embedded part welding connection, grout anchor lap connection, and bolt connection. Although these installation methods are usable, due to potential construction errors in precast components or the main structure, on-site cutting, grinding, or the use of shims are required during installation, which are time-consuming and labor-intensive remedial measures, seriously affecting the construction progress and installation quality. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a prefabricated component connection node to solve the problem that when installing prefabricated stairs, there may be construction errors in the prefabricated components or main structure, which require on-site cutting, grinding or the use of shims, which is time-consuming and labor-intensive.

[0005] Based on the above objectives, this utility model provides a prefabricated component connection node, including a first embedded part, embedded in a floor slab, with a first positioning end at the end facing away from the floor slab, and a plurality of first bolts facing away from the floor slab fixed on the first positioning end; a second embedded part, embedded in a staircase, with a second positioning end at the end facing closer to the floor slab; and a connector, abutting against the first positioning end, having a sliding insertion end facing away from the first embedded part and a connecting groove through the connector, the second positioning end being slidably fixed in the sliding insertion end, the end of the first bolt passing through the connecting groove, and a first nut fitted on the outer wall of the first bolt, the first nut abutting against the connector and fixing the connector.

[0006] In an optional example, the first embedded part has an embedded groove at one end facing the floor slab, and an embedded through hole is provided in the embedded groove to penetrate the first embedded part. The first bolt is inserted into the embedded through hole, and the head of the first bolt is fixed in the embedded groove.

[0007] In one alternative example, the first embedded part has two sets of symmetrically arranged arc-shaped embedded bars fixed at one end facing the direction close to the floor slab.

[0008] In an optional example, the connecting slot is a straight slot structure and is set along the width direction of the staircase, and the first bolt is slidably inserted into the connecting slot.

[0009] In an optional example, the sliding insertion end has a sliding groove arranged along the direction of staircase travel, and the second positioning end is slidably inserted into the sliding groove.

[0010] In an optional example, an end positioning groove is provided in the sliding groove, and a positioning block is provided on the second positioning end facing the direction close to the end positioning groove.

[0011] In an optional example, an extension block is provided on one end of the second positioning end facing away from the end positioning groove, and a clamping block is fixed on the sliding insertion end. The lower end of the clamping block abuts against the upper end of the extension block and fixes the connector.

[0012] In an alternative example, the clamping block has a clamping groove at one end facing the extension block.

[0013] In one alternative example, the end of the second embedded part facing away from the connector is fixed with an embedded plate.

[0014] In an alternative example, a cylindrical embedded rib is fixed to the end of the embedded plate facing away from the connector.

[0015] The beneficial effects of this utility model are that the cooperation between the second positioning end and the sliding plug end enables the rapid positioning of the stair structure, greatly reducing the difficulty of aligning the stair structure. Furthermore, the connecting groove on the connector provides the necessary adjustment margin for installation. Even if the first embedded part undergoes slight displacement during concrete pouring, the first bolt can still slide within the groove, ensuring smooth installation. This reduces the precision requirements for the production of the connection node, avoids on-site welding operations, and allows for fast installation and shortens construction time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the present utility model. Figure 1 ; Figure 3 This is a schematic diagram of the exploded structure of an embodiment of the present utility model. Figure 2 ; Figure 4 This is a usage diagram of an embodiment of the present utility model.

[0018] The markings in the diagram are as follows: 1. First embedded part; 11. First positioning end; 12. Embedded groove; 13. Embedded through hole; 14. Rib hole; 2. Second embedded part; 21. Second positioning end; 211. Extension block; 22. Positioning block; 23. Embedded plate; 24. Cylindrical embedded rib; 3. Connector; 31. Sliding insertion end; 311. Sliding groove; 312. End positioning groove; 32. Connecting through groove; 4. First bolt; 5. First nut; 6. Arc-shaped embedded rib; 7. Ribbed nut; 8. Clamping block; 81. Clamping groove. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] In one embodiment, please refer to Figures 1 to 4 As shown, the present invention provides a prefabricated component connection node, including: a first embedded part 1, a second embedded part 2, and a connector 3.

[0022] The first embedded part 1 is pre-embedded in the precast concrete of the floor slab, and a first positioning end 11 is provided at the end facing away from the floor slab. Several first bolts 4 are fixed on the first positioning end 11 facing away from the floor slab. The first bolts 4 are arranged vertically.

[0023] The second embedded part 2 is installed inside the staircase, and a second positioning end 21 is provided at the end facing the floor slab. The staircase can be made of concrete or steel frame structure.

[0024] The connector 3 abuts against the first positioning end 11 and has a sliding insertion end 31 facing away from the first embedded part 1 and a connecting groove 32 that passes through the connector 3. The second positioning end 21 is slidably fixed in the sliding insertion end 31. The end of the first bolt 4 passes through the connecting groove 32. A first nut 5 is fitted on the outer wall of the first bolt 4. The first nut 5 abuts against the connector 3 and fixes the connector 3.

[0025] Assembly process: Step 1: Hoist the staircase, align the second positioning end 21 of the second embedded part 2 with and insert it into the sliding insertion end 31 of the connector 3, and pass the first bolt 4 on the first embedded part 1 through the connecting groove 32 on the connector 3 to achieve initial positioning and load bearing. Step 2: Screw the first nut 5 into the first bolt 4. By tightening the nut, the end face of the nut is brought into close contact with the surface of the connector 3, thereby firmly pressing the connector 3 onto the positioning end of the first embedded part 1, and finally completing the rigid fixation.

[0026] Specifically, this example achieves rapid positioning of the stair structure through the cooperation of the second positioning end 21 and the sliding plug end 31, greatly reducing the difficulty of aligning the stair structure. Furthermore, the connecting groove 32 on the connector 3 provides the necessary adjustment margin for installation. Even if the first embedded part 1 undergoes slight displacement during concrete pouring, the first bolt 4 can still slide within the groove, ensuring smooth installation. This reduces the precision requirements for the production of the connection node, avoids on-site welding operations, and enables fast installation, thus shortening the construction time.

[0027] In an optional example, please refer to Figures 1 to 4 As shown, the first embedded part 1 has an embedded groove 12 at one end facing the floor slab. An embedded through hole 13 is formed in the embedded groove 12, penetrating the first embedded part 1. The first bolt 4 is inserted into the embedded through hole 13, and the head of the first bolt 4 is fixed in the embedded groove 12 by welding. The threaded part of the first bolt 4 passes through the embedded through hole 13.

[0028] Specifically, in this example, by opening a pre-embedded through hole 13 in the pre-embedded groove 12, the processing of the first pre-embedded part 1 is facilitated, and the installation quality and welding quality of the first bolt 4 are guaranteed.

[0029] In an optional example, please refer to Figures 1 to 4 As shown, two sets of symmetrically arranged arc-shaped embedded bars 6 are fixed at one end of the first embedded part 1 facing the direction close to the floor slab. The first embedded part 1 has a bar hole 14, and the end of the arc-shaped embedded bar 6 passes through the corresponding bar hole 14 and is fixed with a threaded nut 7 by means of threaded connection. The threaded nut 7 abuts against the first embedded part 1 and fixes the arc-shaped embedded bar 6.

[0030] Specifically, this example provides a three-dimensional anchoring point in the concrete through the arc-shaped embedded bar 6. When the first embedded part 1 is subjected to tension, compression, or shear forces in any direction, a complex mechanical interlocking effect will be generated between the concrete and the arc-shaped embedded bar 6, which greatly enhances the anchoring force. Furthermore, the symmetrically arranged arc-shaped embedded bars 6 can distribute the concentrated force more evenly and quickly to the surrounding large area of ​​concrete, avoiding stress concentration and preventing brittle splitting failure of the concrete at the joint.

[0031] In an optional example, please refer to Figures 1 to 4 As shown, the connecting groove 32 is a straight groove structure and is set along the width direction of the staircase. The first bolt 4 is slidably inserted into the connecting groove 32.

[0032] Specifically, this example uses a straight groove structure design to absorb the length error of the first prefabricated component during production and construction, ensuring that the staircase can be installed smoothly even when the actual size deviates from the theoretical size. Furthermore, when the structure deforms due to temperature changes, concrete shrinkage, etc., this sliding capability along the length direction can release the resulting internal constraint stress, preventing the nodes or components themselves from cracking due to excessive stress, thus improving the durability and safety of the structure.

[0033] In an optional example, please refer to Figures 1 to 4 As shown, the sliding insertion end 31 has a sliding groove 311 arranged along the direction of the stairs, and the second positioning end 21 is slidably inserted into the sliding groove 311 to facilitate the quick fixing of the connector 3.

[0034] In an optional example, please refer to Figures 1 to 4 As shown, an end positioning groove 312 is provided in the sliding groove 311, and a positioning block 22 is provided on the second positioning end 21 at one end facing the direction close to the end positioning groove 312.

[0035] Specifically, this example ensures that the staircase is in the correct position by cooperating with the positioning block 22 and the end positioning groove 312, which is more conducive to the rapid installation of the staircase and eliminates human positioning errors.

[0036] In an optional example, please refer to Figures 1 to 4 As shown, an extension block 211 is provided on the second positioning end 21 at the end facing away from the end positioning groove 312, and a clamping block 8 is fixed on the sliding insertion end 31 by bolt connection. The lower end of the clamping block 8 abuts against the upper end of the extension block 211 and fixes the connecting piece 3.

[0037] Specifically, in this example, the extension block 211 is clamped by the clamping block 8, forming a highly stable rigid node with a certain adjustment margin, ensuring smooth installation, reducing the production precision of the stair structure, avoiding on-site welding operations, and further improving the construction speed of the stair structure.

[0038] In an optional example, please refer to Figures 1 to 4 As shown, the end of the clamping block 8 facing the extension block 211 is provided with a clamping groove 81, which facilitates the quick fixing of the clamping block 8.

[0039] In an optional example, please refer to Figures 1 to 4 As shown, the end of the second embedded part 2 facing away from the connector 3 is fixed with an embedded plate 23 by welding.

[0040] Specifically, this example increases the contact area between the second embedded part 2 and the stair concrete, distributing the concentrated force transmitted from the node more evenly throughout the precast stair component, effectively preventing local crushing of the concrete.

[0041] In an optional example, please refer to Figures 1 to 4 As shown, a cylindrical embedded rib 24 is fixed to the end of the embedded plate 23 facing away from the connector 3 by welding.

[0042] Specifically, in this example, the cylindrical embedded bar 24 generates a very strong bond and mechanical interlocking force with the concrete, ensuring the structural stability of the second embedded part 2 when subjected to dynamic loads.

[0043] This utility model enables rapid positioning of the stair structure through the cooperation of the second positioning end 21 and the sliding insertion end 31, reducing the difficulty of precise high-altitude alignment of the stair structure. Furthermore, the connecting groove 32 on the connector 3 provides necessary adjustment margin for installation. Even if the first embedded part 1 undergoes slight displacement during concrete pouring, the first bolt 4 can still slide within the groove, ensuring smooth installation. This reduces the precision requirements for the production of the connection node, avoids on-site welding operations, and accelerates installation. Simultaneously, the clamping block 8 clamps the extension block 211, forming a highly stable rigid node with a certain adjustment margin, ensuring smooth installation, reducing the production precision of the stair structure, avoiding on-site welding operations, and further improving the construction speed of the stair structure.

[0044] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0045] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A prefabricated component connection node, characterized in that, include: The first embedded part (1) is embedded in the floor slab, and a first positioning end (11) is provided at one end facing away from the floor slab. Several first bolts (4) facing away from the floor slab are fixed on the first positioning end (11). The second embedded part (2) is embedded in the staircase, and a second positioning end (21) is provided at the end facing the direction close to the floor slab. The connector (3) abuts against the first positioning end (11) and has a sliding plug-in end (31) arranged in a direction away from the first embedded part (1) and a connecting groove (32) that passes through the connector (3). The second positioning end (21) is slidably fixed in the sliding plug-in end (31). The end of the first bolt (4) passes through the connecting groove (32). A first nut (5) is fitted on the outer wall of the first bolt (4). The first nut (5) abuts against the connector (3) and fixes the connector (3).

2. The prefabricated component connection node according to claim 1, characterized in that, The first embedded part (1) has an embedded groove (12) at one end facing the floor slab. The embedded groove (12) has an embedded through hole (13) that penetrates the first embedded part (1). The first bolt (4) is inserted into the embedded through hole (13) and the head of the first bolt (4) is fixed in the embedded groove (12).

3. The prefabricated component connection node according to claim 2, characterized in that, The first embedded part (1) has two sets of symmetrically arranged arc-shaped embedded bars (6) fixed at one end facing the direction close to the floor slab.

4. The prefabricated component connection node according to claim 1, characterized in that, The connecting groove (32) is a straight groove structure and is set along the width direction of the staircase. The first bolt (4) is slidably inserted into the connecting groove (32).

5. The precast component connection node according to claim 4, characterized in that, The sliding insertion end (31) has a sliding groove (311) arranged along the direction of the stairs, and the second positioning end (21) is slidably inserted into the sliding groove (311).

6. The precast component connection node according to claim 5, characterized in that, An end positioning groove (312) is provided in the sliding groove (311), and a positioning block (22) is provided on the second positioning end (21) facing the direction close to the end positioning groove (312).

7. The precast component connection node according to claim 6, characterized in that, An extension block (211) is provided on one end of the second positioning end (21) facing away from the end positioning groove (312). A clamping block (8) is fixed on the sliding insertion end (31). The lower end of the clamping block (8) abuts against the upper end of the extension block (211) and fixes the connector (3).

8. The precast component connection node according to claim 7, characterized in that, The clamping block (8) has a clamping groove (81) at one end facing the extension block (211).

9. The precast component connection node according to claim 1, characterized in that, The second embedded part (2) has an embedded plate (23) fixed at one end facing away from the connector (3).

10. The prefabricated component connection node according to claim 9, characterized in that, The embedded plate (23) has a cylindrical embedded rib (24) fixed at one end facing away from the connector (3).

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