Precast concrete square pile
By welding connecting plates and threaded sleeves onto the reinforcing cage of precast concrete square piles, combined with the design of lifting rings and seals, the problem of easy damage to precast concrete square piles during construction was solved, thus achieving safety and integrity in the construction process.
Patent Information
- Application Number
- CN202423083131.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Precast concrete square piles are easily damaged by construction equipment during construction, especially in areas where cranes cannot reach and steel wire ropes are needed for binding. The steel wire ropes are prone to slippage, which can lead to surface damage or damage to the finished product.
A connecting plate is welded onto the reinforcing cage, and a threaded sleeve is connected to the connecting plate. The hanging assembly is threadedly connected to the threaded sleeve. The lifting ring protrudes from the outer surface of the pile body and is connected to the hook of the construction equipment to avoid the wire rope from contacting the pile body. At the same time, a pressure cylinder and a seal are used to seal the threaded sleeve. The tool slot facilitates the removal of the lifting ring.
This effectively avoids damage caused by contact between the wire rope and the surface of the pile body, ensuring the integrity of the construction process, and the detachable hanging components do not affect subsequent construction.
Smart Images
Figure CN223548550U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a precast concrete square pile. Background Technology
[0002] In building construction, precast concrete square piles are commonly used to reduce the waiting time for on-site pouring. When constructing precast concrete square piles, they must first be lifted by a pile driver and erected using a lifting device before driving. During the erection of the precast concrete square piles, a crane is usually required for assistance. However, for construction sites where a crane cannot reach, the pile driver must operate independently, requiring the use of steel wire ropes to secure the precast concrete square piles. During construction, these steel wire ropes are prone to slippage, causing surface damage to the precast concrete square piles and even rendering the finished product unusable. Utility Model Content
[0003] The purpose of this utility model is to provide a precast concrete square pile to solve the problem that existing precast concrete square piles are easily damaged by construction equipment during construction.
[0004] This utility model provides a precast concrete square pile, including a pile body, which is formed by a reinforcing cage and concrete pouring. The reinforcing cage is composed of multiple axial reinforcing bars distributed circumferentially along the pile body and multiple circumferential reinforcing bars distributed axially along the pile body. It also includes a connecting plate, a threaded sleeve and a hanging assembly. The connecting plate is welded to the reinforcing cage, the threaded sleeve is fixedly connected to the connecting plate, and the hanging assembly is threadedly connected to the threaded sleeve. The hanging assembly includes a lifting ring, part of which protrudes from the outer surface of the pile body and is used to connect to the hook of the construction equipment.
[0005] As a preferred technical solution for precast concrete square piles, the hanging assembly also includes a pressure cylinder and a sealing element. The outer side of the pressure cylinder is provided with a first thread for threaded connection with a threaded sleeve. The inner side of the pressure cylinder is provided with a second thread for threaded connection with a lifting ring. The open end of the pressure cylinder is also provided with an outward flange. The sealing element is sandwiched between the threaded sleeve and the outward flange and is used to seal the gap between the threaded sleeve and the pressure cylinder.
[0006] As a preferred technical solution for precast concrete square piles, a tool groove is also provided on the inner side of the pressure cylinder. The tool groove is located at the open end of the pressure cylinder, and a wrench can be used to tighten or loosen the pressure cylinder through the tool groove.
[0007] As a preferred technical solution for precast concrete square piles, the tool groove is a regular hexagonal groove or a square groove.
[0008] As a preferred technical solution for precast concrete square piles, the first thread and the second thread have opposite directions of rotation.
[0009] As a preferred technical solution for precast concrete square piles, the sealing element is a ring structure with a Z-shaped cross-section. The concrete layer of the pile body is provided with a groove of a ring structure. One end of the sealing element is clamped between the threaded sleeve and the pressure cylinder, and the other end is embedded in the groove.
[0010] As a preferred technical solution for precast concrete square piles, the end face of the opening end of the pressure cylinder is flush with the outer surface of the pile body or recessed inward relative to the outer surface of the pile body.
[0011] As a preferred technical solution for precast concrete square piles, the connecting plate is provided with a groove that matches the bottom shape of the threaded sleeve. The bottom of the threaded sleeve is located in the groove of the connecting plate and is welded to the connecting plate.
[0012] As the preferred technical solution for precast concrete square piles, the connecting plate has a cross-shaped structure.
[0013] As a preferred technical solution for precast concrete square piles, two hanging components are provided, which are distributed at intervals along the length of the pile body and are located on the same side of the pile body.
[0014] The beneficial effects of this utility model are as follows:
[0015] This utility model provides a precast concrete square pile. By welding a connecting plate onto the reinforcing cage and connecting a threaded sleeve to the connecting plate, the hanging assembly is threadedly connected to the threaded sleeve. During construction, the hook and lifting ring of the construction equipment protrude from the pile body and are connected to each other, avoiding contact between the wire rope and the surface of the pile body, thereby avoiding damage. Furthermore, the threaded connection between the hanging assembly and the threaded sleeve allows the hanging assembly to be disassembled in a timely manner, avoiding any impact on subsequent construction processes. Attached Figure Description
[0016] Figure 1 This is a cross-sectional view of the precast concrete square pile in an embodiment of this utility model;
[0017] Figure 2 for Figure 1 Enlarged view of the structure of section A;
[0018] Figure 3 This is a schematic diagram of the connection between the connecting plate and the reinforcing cage in an embodiment of this utility model;
[0019] Figure 4 This is a schematic diagram of the pressure cylinder in an embodiment of the present invention;
[0020] Figure 5 This is a cross-sectional view of the precast concrete square pile after the hanging assembly has been removed in this embodiment of the present invention;
[0021] Figure 6 for Figure 5 Enlarged view of the structure of section B;
[0022] Figure 7 This is a schematic diagram of the hoisting of the precast concrete square pile in this embodiment by construction equipment.
[0023] In the picture:
[0024] 10. Pile body; 100. Concrete layer; 110. Groove; 200. Reinforcing cage; 210. Circumferential reinforcement; 220. Axial reinforcement;
[0025] 1. Connecting plate; 2. Threaded sleeve; 3. Pressure sleeve; 31. First thread; 32. Second thread; 33. Outer flange; 34. Tool groove; 4. Seal; 5. Lifting ring. Detailed Implementation
[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0030] Example 1
[0031] like Figures 1-7 As shown, this utility model provides a precast concrete square pile, including a pile body 10, which is formed by a reinforcing cage 200 and concrete casting. The reinforcing cage 200 consists of a plurality of axial reinforcing bars 220 spaced apart circumferentially along the pile body 10 and a plurality of circumferential reinforcing bars 210 spaced apart axially along the pile body 10. It also includes a connecting plate 1, a threaded sleeve 2, and a hanging assembly. The connecting plate 1 is welded to the reinforcing cage 200. The connecting plate 1 can be welded only to the circumferential reinforcing bars 210, or only to the axial reinforcing bars 220, or simultaneously to both the axial reinforcing bars 220 and the circumferential reinforcing bars 210. In this embodiment, please refer to... Figure 3As shown, the connecting plate 1 is welded to multiple circumferential reinforcing bars 210, and the connecting plate 1 has a cross-shaped structure, thereby dispersing the stress points and avoiding damage to local areas of the pile body 10. The threaded sleeve 2 is fixedly connected to the connecting plate 1. The connection method can be through fasteners or welding. Considering the convenience of construction, the threaded sleeve 2 is welded to the connecting plate 1 in this embodiment, and a groove matching the bottom shape of the threaded sleeve 2 is provided on the connecting plate 1. The bottom of the threaded sleeve 2 is located in the groove of the connecting plate 1 and is welded to the connecting plate 1. This setting can further increase the structural strength at the connection joint between the threaded sleeve 2 and the connecting plate 1. Before pouring the pile body 10, the threaded sleeve 2 and the connecting plate 1 are first welded to the reinforcing cage 200, and a shielding element is set at the corresponding position to protect the threads of the threaded sleeve 2 and provide installation space for the hanging components. Then, the reinforcing cage 200, the connecting plate 1, and the threaded sleeve 2 are integrally cast, and the concrete layer 100 after pouring forms a space for the installation of the hanging components. The suspension assembly is threadedly connected to the threaded sleeve 2. The suspension assembly includes a lifting ring 5, a portion of which protrudes from the outer surface of the pile body 10 and is used to connect to the hook of the construction equipment. During construction, the hook of the construction equipment connects to the protruding portion of the lifting ring 5 to prevent the wire rope from contacting the surface of the pile body 10, thereby avoiding damage. Furthermore, the threaded connection between the suspension assembly and the threaded sleeve 2 allows the suspension assembly to be disassembled in a timely manner, avoiding any impact on subsequent construction processes.
[0032] Furthermore, such as Figure 1 , Figure 2 and Figure 4 As shown, the hanging assembly also includes a pressure cylinder 3 and a sealing element 4. The pressure cylinder 3 is a hollow cylindrical structure with one open end. A first thread 31 is provided on the outer side of the pressure cylinder 3 for threaded connection with the threaded sleeve 2; a second thread 32 is provided on the inner side of the pressure cylinder 3 for threaded connection with the lifting ring 5. The open end of the pressure cylinder 3 also has an outward flange 33. The sealing element 4 is sandwiched between the threaded sleeve 2 and the outward flange 33, and is used to seal the gap between the threaded sleeve 2 and the pressure cylinder 3. This prevents the threaded sleeve 2 and the deeper connecting plate 1 and reinforcing cage 200 from being corroded by moisture or salt spray during use, thus reducing their service life. When constructing the pile body 10, the sealing element 4 is first placed on the end face of the threaded sleeve 2, then the pressure cylinder 3 is threadedly connected to the threaded sleeve 2 and tightened, then the lifting ring 5 is threadedly connected to the pressure cylinder 3, and finally the lifting is carried out. After placement, the lifting ring 5 is unscrewed from the pressure cylinder 3 to avoid affecting subsequent construction.
[0033] Because the pressure cylinder 3 may rotate synchronously during the process of unscrewing the lifting ring 5 from the pressure cylinder 3, which may reduce the sealing effect of the seal 4, a tool groove 34 is also provided on the inner side of the pressure cylinder 3. Figure 3 As shown, the tool groove 34 is located at the open end of the pressure cylinder 3, allowing a wrench to tighten or loosen the pressure cylinder 3. After the lifting ring 5 is unscrewed from the pressure cylinder 3, the pressure cylinder 3 is tightened again using a wrench to ensure the sealing effect of the seal 4. The tool groove 34 is hexagonal or square, allowing for tightening or loosening using an internal hex wrench or a square head wrench. Furthermore, the tightening torque of the lifting ring 5 can be set to be less than the tightening torque of the pressure cylinder 3, ensuring that the reaction force applied to the pressure cylinder 3 during the loosening of the lifting ring 5 never exceeds the friction limit of the threaded pair between the pressure cylinder 3 and the threaded sleeve 2, and also preventing the pressure cylinder 3 from rotating synchronously during the loosening of the lifting ring 5.
[0034] Optionally, the end face of the opening end of the pressure cylinder 3 is flush with the outer surface of the pile body or recessed inward relative to the outer surface of the pile body 10, to ensure that the pressure cylinder 3 does not obstruct the construction process during the construction of the pile body 10. In this embodiment, the end face of the opening end of the pressure cylinder 3 is recessed inward relative to the outer surface of the pile body 10.
[0035] Furthermore, the sealing element 4 is a Z-shaped annular structure. The concrete layer 100 has an annular groove 110 at a corresponding position, located between the open end face of the pressure cylinder 3 and the outer surface of the pile body 10. One end of the sealing element 4 is clamped between the threaded sleeve 2 and the pressure cylinder 3, while the other end is embedded in the groove 110. Sealing is achieved through the compression of the pressure cylinder 3, further enhancing the sealing effect and completely preventing the threaded sleeve 2 from contacting the external environment.
[0036] Optionally, such as Figure 7 As shown, in this embodiment, two hanging assemblies are provided, along with two corresponding connecting plates 1 and threaded sleeves 2. The two hanging assemblies are spaced apart along the length of the pile body 10 and are located on the same side of the pile body 10. During construction, the two hooks of a construction device such as a pile driver can be connected to the lifting rings 5 of the two hanging assemblies respectively to smoothly lift the pile body 10 and make it upright, without the need for additional lifting equipment and ensuring that the outer surface of the pile body 10 is not damaged throughout the process.
[0037] Example 2
[0038] To avoid repetitive description, this embodiment will only describe the differences from Embodiment 1. The difference between this embodiment and Embodiment 1 is that the first thread 31 and the second thread 32 have opposite directions of rotation in this embodiment.
[0039] Specifically, the first thread 31 and the second thread 32 have opposite directions of rotation. During assembly, a wrench is first used to tighten the pressure cylinder 3 onto the threaded sleeve 2 in the first direction, and then the lifting ring 5 is tightened onto the pressure cylinder 3 in the second direction. It can be understood that the first and second directions are opposite; the pressure cylinder 3 is screwed into the threaded sleeve 2 in the first direction and unscrewed from the threaded sleeve 2 in the second direction; the lifting ring 5 is screwed into the pressure cylinder 3 in the second direction and unscrewed from the pressure cylinder 3 in the first direction. During the process of the lifting ring 5 unscrewing from the pressure cylinder 3 in the first direction, the pressure cylinder 3 is subjected to a torque in the first direction, making the connection between the pressure cylinder 3 and the threaded sleeve 2 tighter. Therefore, it is unnecessary to retighten the pressure cylinder 3 after removing the lifting ring 5, saving operation time. At the same time, the tightening torque of the lifting ring 5 is set to be less than that of the pressure cylinder 3, so that the reaction force applied to the pressure cylinder 3 during the tightening of the lifting ring 5 in the second direction can never exceed the friction limit of the threaded pair between the pressure cylinder 3 and the threaded sleeve 2, thus preventing the pressure cylinder 3 from loosening during the tightening of the lifting ring 5.
[0040] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A precast concrete square pile, comprising a pile body (10), said pile body (10) being formed by a reinforcing cage (200) and concrete casting, said reinforcing cage (200) being composed of a plurality of axial reinforcing bars (220) spaced apart circumferentially along the pile body (10) and a plurality of circumferential reinforcing bars (210) spaced apart axially along the pile body (10), characterized in that, Also includes: A connecting plate (1) is welded to the reinforcing cage (200); Threaded sleeve (2), the threaded sleeve (2) is fixedly connected to the connecting plate (1); The hanging assembly is threadedly connected to the threaded sleeve (2). The hanging assembly includes a lifting ring (5), a portion of which protrudes from the outer surface of the pile body (10) and is used to connect with the hook of the construction equipment.
2. The precast concrete square pile according to claim 1, characterized in that, The hanging assembly also includes a pressure cylinder (3) and a sealing element (4). The outer side of the pressure cylinder (3) is provided with a first thread (31), which is used to connect with the threaded sleeve (2). The inner side of the pressure cylinder (3) is provided with a second thread (32), which is used to connect with the lifting ring (5). The open end of the pressure cylinder (3) is also provided with an outer flange (33). The sealing element (4) is sandwiched between the threaded sleeve (2) and the outer flange (33) and is used to seal the gap between the threaded sleeve (2) and the pressure cylinder (3).
3. The precast concrete square pile according to claim 2, characterized in that, The inner side of the pressure cylinder (3) is also provided with a tool groove (34), which is located at the open end of the pressure cylinder (3). A wrench tool can tighten or loosen the pressure cylinder (3) through the tool groove (34).
4. The precast concrete square pile according to claim 3, characterized in that, The tool groove (34) is a regular hexagonal groove or a square groove.
5. The precast concrete square pile according to claim 4, characterized in that, The first thread (31) has the opposite rotation direction to the second thread (32).
6. The precast concrete square pile according to claim 2, characterized in that, The sealing element (4) is a ring structure with a Z-shaped cross-section. The concrete layer (100) of the pile body (10) is provided with a groove (110) of a ring structure. One end of the sealing element (4) is clamped between the threaded sleeve (2) and the pressure cylinder (3), and the other end is embedded in the groove (110).
7. The precast concrete square pile according to claim 2, characterized in that, The end face of the opening end of the pressure cylinder (3) is flush with the outer surface of the pile body (10) or recessed inward relative to the outer surface of the pile body (10).
8. The precast concrete square pile according to claim 1, characterized in that, The connecting plate (1) is provided with a groove that matches the bottom shape of the threaded sleeve (2). The bottom of the threaded sleeve (2) is located in the groove of the connecting plate (1) and is welded to the connecting plate (1).
9. The precast concrete square pile according to claim 1, characterized in that, The connecting plate (1) has a cross-shaped structure.
10. The precast concrete square pile according to any one of claims 1-9, characterized in that, The suspension assembly is configured as two, and the two suspension assemblies are distributed at intervals along the length direction of the pile body (10), and the two suspension assemblies are located on the same side of the pile body (10).