A prefabricated building structure pile foundation node connection device

By introducing a combination structure of support plate, limiting plate and reinforcing plate into the pile foundation node connection device of prefabricated building structure, and by using the cooperation of locking bolts and insert plates, the longitudinal limiting problem of the structural pile is solved, and a stable connection between the pile and the base is achieved to prevent loosening.

CN224281350UActive Publication Date: 2026-05-26SHANGHAI JIANKE ENG CONSULTING +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI JIANKE ENG CONSULTING
Filing Date
2025-07-10
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In existing prefabricated building structure pile foundation node connection devices, there is a lack of longitudinal restraint between the structural pile and the fixing components, which makes the lower end of the pile prone to loosening.

Method used

The fixing components include a support plate, a limiting plate, and a reinforcing rib plate, which are fixed to the pile foundation by locking bolts. The combination structure of the connecting plate and the reinforcing plate is used to achieve longitudinal limiting and reinforcement of the structural pile.

Benefits of technology

It effectively prevents the lower end of the structural pile from loosening, improves the stability of the connection between the pile and the foundation, and enhances the firmness of the node connection.

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Abstract

This utility model discloses a connection device for pile foundation nodes in prefabricated building structures, relating to the field of prefabricated building technology. The utility model includes a pile foundation base and a structural pile body. An installation groove is formed at the top of the pile foundation base, and fixing components are symmetrically inserted into the installation groove. This utility model achieves a stable connection between the fixing components and the structural pile body by inserting the inner end of a connecting plate through the upper through groove and into the connecting groove, and by limiting the outer end of the connecting plate with the end of a locking bolt. This longitudinal limitation of the structural pile body prevents loosening at its lower end, making the lower end of the structural pile body more stable. Furthermore, by inserting a reinforcing plate through the lower through groove and into the reinforcing groove, and by limiting the reinforcing plate with the structural pile body, the longitudinal limitation of the fixing components is further achieved, making the connection between the fixing components and the pile foundation base even more secure.
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Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building technology, and in particular relates to a prefabricated building structure pile foundation node connection device. Background Technology

[0002] Prefabricated construction refers to transferring a large amount of on-site work from traditional construction methods to factories. Building components and accessories are prefabricated in factories, transported to the construction site, and finally assembled on-site using reliable connection methods. A search revealed a patent application with application number 202421990853.X, which discloses a prefabricated building structure pile foundation node connection device. This device includes a first fixing component and a second fixing component, which are installed on a pile base and contact the structural pile installed on the pile base. The first and second fixing components have identical structures, each including a support plate, a limiting plate, and locking screws. The limiting plate is vertically connected to the support plate to form an integrated structure. The limiting screws are used to fix the limiting plate on the pile base, and the support plate, after contacting the structural pile, extends into an installation groove provided on the pile base.

[0003] However, in actual use, the applicant found that there was a lack of connection structure between the structural pile and the fixing component, which made it impossible to longitudinally limit the structural pile, and thus the lower end of the structural pile was prone to loosening. In view of this, we propose a prefabricated building structural pile foundation node connection device. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a prefabricated building structure pile foundation node connection device, including a pile foundation base and a structural pile body. The top of the pile foundation base has an installation groove, and fixing components are symmetrically inserted into the installation groove. Each fixing component includes a support plate, a limiting plate, and a reinforcing rib plate. The limiting plate is vertically fixed to the outer wall of the support plate, and the reinforcing rib plate is fixedly disposed between the upper part of the support plate and the limiting plate. The lower part of the support plate is inserted into the installation groove, and the limiting plate is fixed to the top of the pile foundation base by locking bolts. The lower part has symmetrical reinforcing grooves on both sides. A reinforcing insert is movably inserted through the lower part of the support plate. One end of the reinforcing insert is inserted into the reinforcing groove. The lower end of the structural pile is inserted into the mounting groove between the two fixing components. The two sides of the structural pile are respectively attached to the two support plates. The two sides of the structural pile have symmetrical connecting grooves. A connecting insert is movably inserted through the upper part of the support plate. The inner end of the connecting insert is inserted into the connecting groove. The end of the locking bolt abuts against the outer end of the connecting insert.

[0006] Preferably, the lower part of the support plate has a lower through groove, and one end of the reinforcing insert plate passes through the lower through groove and is inserted into the reinforcing groove.

[0007] Preferably, the end of the reinforcing insert away from the reinforcing groove abuts against the side wall at the lower end of the structural pile.

[0008] Preferably, three reinforcing ribs are arranged side by side at equal intervals between the support plate and the limiting plate.

[0009] Preferably, an upper through groove is provided on the support plate between two adjacent reinforcing ribs, and the bottom of the upper through groove is flush with the top of the limiting plate. Two connecting grooves are symmetrically provided on each side of the structural pile, and the connecting groove is aligned with the upper through groove on the same side. The inner end of the connecting insert plate passes through the upper through groove and is inserted into the connecting groove.

[0010] Preferably, each of the two adjacent reinforcing ribs has a mounting hole on the limiting plate, and the lower end of the locking bolt passes through the mounting hole and is screwed into the pile foundation base.

[0011] This utility model has the following beneficial effects:

[0012] This utility model discloses a prefabricated building structure pile foundation node connection device. By inserting the inner end of the connecting plate through the upper through groove and into the connecting groove, and limiting the outer end of the connecting plate by the end of the locking bolt, the fixing component and the structural pile can be stably connected through the connecting plate. It can also limit the longitudinal movement of the structural pile to prevent the lower end of the structural pile from loosening, making the lower end of the structural pile more stable. By inserting the reinforcing plate through the lower through groove and into the reinforcing groove, and using the structural pile to limit the reinforcing plate, the longitudinal movement of the fixing component can be further limited by the reinforcing plate, making the connection between the fixing component and the pile foundation more secure. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the external structure of a prefabricated building structure pile foundation node connection device according to the present invention.

[0015] Figure 2 This is a schematic diagram of the internal structure of a prefabricated building structure pile foundation node connection device according to the present invention.

[0016] Figure 3 This is an exploded view of the fixing components, structural pile, connecting plate and reinforcing plate in a prefabricated building structure pile foundation node connection device of this utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Pile foundation base; 11. Mounting groove; 12. Reinforcing groove; 2. Fixing component; 21. Support plate; 211. Upper through groove; 212. Lower through groove; 22. Limiting plate; 221. Mounting hole; 23. Reinforcing rib plate; 3. Locking bolt; 4. Structural pile body; 41. Connecting groove; 5. Connecting insert plate; 6. Reinforcing insert plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 As shown, this utility model provides a technical solution:

[0021] A prefabricated building structure pile foundation node connection device includes a pile foundation base 1 and a structural pile body 4. The top of the pile foundation base 1 has an installation groove 11. Fixing components 2 are symmetrically inserted into the installation groove 11. The fixing components 2 include a support plate 21, a limiting plate 22, and reinforcing ribs 23. The limiting plate 22 is vertically fixed to the outer wall of the support plate 21. The reinforcing ribs 23 are fixedly disposed between the upper part of the support plate 21 and the limiting plate 22. Three reinforcing ribs 23 are arranged side-by-side at equal intervals between the support plate 21 and the limiting plate 22. The lower part of the support plate 21... The pile body 4 is inserted into the mounting groove 11. The limiting plate 22 is fixed to the top of the pile foundation 1 by the locking bolt 3. The mounting groove 11 has symmetrical reinforcing grooves 12 on both sides of its lower part. The lower end of the structural pile body 4 is inserted into the mounting groove 11 between the two fixing components 2, and the two sides of the structural pile body 4 are respectively attached to the two support plates 21. The two sides of the structural pile body 4 have symmetrical connecting grooves 41. The upper part of the support plate 21 is movably provided with a connecting insert plate 5. The inner end of the connecting insert plate 5 is inserted into the connecting groove 41. The two adjacent reinforcing plates 23 are connected by a connecting insert plate 5. Each support plate 21 has an upper through groove 211, and the bottom of the upper through groove 211 is flush with the top of the limiting plate 22. Two connecting grooves 41 are symmetrically provided on each side of the structural pile 4, and the connecting grooves 41 are aligned with the upper through grooves 211 on the same side. The inner end of the connecting plate 5 passes through the upper through groove 211 and is inserted into the connecting groove 41. The end of the locking bolt 3 abuts against the outer end of the connecting plate 5, limiting the outer end of the connecting plate 5 and preventing the inner end of the connecting plate 5 from moving out of the connecting groove 41. Two adjacent reinforcing ribs... Mounting holes 221 are provided on the limiting plates 22 between 23. The lower end of the locking bolt 3 passes through the mounting hole 221 and is screwed into the pile foundation 1. By passing the inner end of the connecting plate 5 through the upper through groove 211 and inserting it into the connecting groove 41, and limiting the outer end of the connecting plate 5 by the end of the locking bolt 3, the fixing component 2 and the structural pile 4 can be stably connected by the connecting plate 5. The structural pile 4 can be longitudinally limited to prevent the lower end of the structural pile 4 from loosening, so that the lower end of the structural pile 4 can be more stable.

[0022] A reinforcing insert 6 is movably provided through the lower part of the support plate 21. One end of the reinforcing insert 6 is inserted into the reinforcing groove 12. A lower through groove 212 is provided at the lower part of the support plate 21. One end of the reinforcing insert 6 passes through the lower through groove 212 and is inserted into the reinforcing groove 12. The end of the reinforcing insert 6 away from the reinforcing groove 12 abuts against the side wall of the lower end of the structural pile 4. By passing the reinforcing insert 6 through the lower through groove 212 and inserting it into the reinforcing groove 12, and by using the structural pile 4 to limit the reinforcing insert 6, the longitudinal direction of the fixing component 2 can be further limited by the reinforcing insert 6, so that the connection between the fixing component 2 and the pile foundation 1 can be more secure.

[0023] Working principle: In use, the lower part of the support plate 21 on the fixing component 2, together with the reinforcing insert plate 6, is inserted into the mounting groove 11, and the support plate 21 is made to fit against the side wall of one side of the mounting groove 11, so that the limiting plate 22 is placed on the top of the pile foundation 1. One end of the reinforcing insert plate 6 is inserted into the reinforcing groove 12 on one side. The other fixing component 2 is installed in the same way. Then, the lower end of the structural pile 4 is inserted into the mounting groove 11 between the two fixing components 2. At this time, the structural pile 4 can support the two supports. The plate 21 is pressed against the wall, so that the support plate 21 fits against the side wall of the mounting groove 11, and the lower end of the structural pile 4 can block and limit the reinforcing insert 6. Then, the inner ends of the four connecting inserts 5 are inserted one by one through the upper through groove 211 and into the corresponding connecting groove 41. Finally, the lower end of the locking bolt 3 is inserted through the mounting hole 221 and screwed into the pile base 1 to fix the fixing component 2. The end of the locking bolt 3 can be used to limit the outer end of the connecting insert 5, thus completing the installation and reinforcement of the structural pile 4.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications to the technical solutions described in the foregoing embodiments or equivalent substitutions of some of the technical features shall fall within the protection scope of the present utility model.

Claims

1. A fabricated building structure pile foundation node connection device, comprising a pile foundation base (1) and a structure pile body (4), characterized in that: The top of the pile foundation base (1) is provided with an installation groove (11). Fixing components (2) are symmetrically inserted inside the installation groove (11). The fixing components (2) include a support plate (21), a limiting plate (22), and a reinforcing rib plate (23). The limiting plate (22) is vertically fixed to the outer wall of the support plate (21). The reinforcing rib plate (23) is fixedly disposed between the upper part of the support plate (21) and the limiting plate (22). The lower part of the support plate (21) is inserted into the installation groove (11). The limiting plate (22) is fixed to the top of the pile foundation base (1) by locking bolts (3). Reinforcing grooves are symmetrically provided on both sides of the lower part of the installation groove (11). (12) A reinforcing insert (6) is movably provided through the lower part of the support plate (21). One end of the reinforcing insert (6) is inserted into the reinforcing groove (12). The lower end of the structural pile (4) is inserted into the mounting groove (11) between the two fixing components (2). The two sides of the structural pile (4) are respectively attached to the two support plates (21). The two sides of the structural pile (4) are symmetrically provided with connecting grooves (41). A connecting insert (5) is movably provided through the upper part of the support plate (21). The inner end of the connecting insert (5) is inserted into the connecting groove (41). The end of the locking bolt (3) abuts against the outer end of the connecting insert (5).

2. A fabricated building structure pile foundation joint connecting device according to claim 1, characterized in that, The lower part of the support plate (21) is provided with a lower through groove (212), and one end of the reinforcing insert plate (6) passes through the lower through groove (212) and is inserted into the reinforcing groove (12).

3. A fabricated building structure pile foundation joint connecting device according to claim 2, characterized in that, The end of the reinforcing insert (6) away from the reinforcing groove (12) abuts against the side wall at the lower end of the structural pile (4).

4. The fabricated building structure pile foundation joint connecting device according to claim 1, characterized in that, Three reinforcing ribs (23) are arranged side by side at equal intervals between the support plate (21) and the limiting plate (22).

5. The fabricated building structural pile foundation joint connecting device according to claim 1, characterized in that, The support plate (21) between two adjacent reinforcing ribs (23) is provided with an upper through groove (211), and the bottom of the upper through groove (211) is flush with the top of the limiting plate (22). There are two symmetrical connecting grooves (41) on each side of the structural pile (4), and the connecting groove (41) is aligned with the upper through groove (211) on the same side. The inner end of the connecting insert plate (5) passes through the upper through groove (211) and is inserted into the connecting groove (41).

6. The fabricated building structure pile foundation joint connecting device according to claim 1, characterized in that, Mounting holes (221) are provided on the limiting plates (22) between two adjacent reinforcing ribs (23). The lower end of the locking bolt (3) passes through the mounting hole (221) and is screwed into the pile foundation base (1).