A mechanical joint pipe pile without end plate

Abstract

The utility model provides a kind of endless board mechanical joint pipe pile, including the pipe pile body of two ends through, the steel strand of being innumerably embedded with along pipe pile body axis circumferential distribution is located in the pipe pile body, high strength silk is wound and is located in the pipe pile body and between innumerably steel strand, the fixed head is uniformly equipped with in one end of innumerably steel strand, the fixed sleeve is uniformly equipped with in one end of innumerably steel strand away from fixed head, innumerably fixed head are used for with the fixed sleeve of the one-to-one correspondence of another pipe pile body fixed insertion connection.The structure has the advantage that pipe pile is quickly connected between.

Description

Technical Field

[0001] This utility model relates to the field of pipe pile design technology, and in particular to a pipe pile without end plate mechanical joint. Background Technology

[0002] Pipe piles are hollow, slender precast concrete components made using prestressed concrete pretensioning and centrifugal molding methods. They mainly consist of a cylindrical pile body, end plates, and steel sleeves.

[0003] The utility model patent with publication number CN217974333U and title "A Precast Pipe Pile" discloses a pile body and a steel cage located in the hollow part of the pile body. The pile body includes multiple first main bars, the steel cage includes multiple second main bars, and a connector is provided between the first main bars and the second main bars to connect the two.

[0004] When connecting this type of pipe pile structure, the end plate is usually placed opposite to the end plate of another pipe pile and fixed by welding. This connection method is difficult to implement in practice, inconvenient to construct on site, and has low connection efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a pipe pile with a mechanical joint without end plates, which solves the technical problems of high operational difficulty and low connection efficiency in existing pipe pile connection methods.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A type of pipe pile without end plate mechanical joint includes a pipe pile body that extends through both ends. The pipe pile body is embedded with a plurality of steel strands distributed circumferentially along the axis of the pipe pile body. High-strength wires are wound between the plurality of steel strands in the pipe pile body. Each of the plurality of steel strands has a fixing head at one end and a fixing sleeve at the end of each of the plurality of steel strands away from the fixing head. The plurality of fixing heads are used to fix and insert into a plurality of fixing sleeves that correspond one-to-one on another pipe pile body.

[0008] The present invention is further configured such that: one end of the pipe pile body is provided with a plurality of first mounting grooves corresponding one-to-one with the steel strands, and a plurality of fixing heads are respectively provided in the first mounting grooves. Each fixing head includes a first connecting sleeve and a connecting head. The first connecting sleeve is fixedly disposed in the first mounting groove and is fixedly connected to one end of the steel strand. The connecting head is fixedly disposed at the end of the first connecting sleeve away from the steel strand and extends out of the first mounting groove. An abutment groove is provided annularly on the side wall of the section of the connecting head extending out of the first mounting groove.

[0009] The present invention is further configured such that: a plurality of second mounting grooves corresponding one-to-one with the steel strands are opened at the other end of the pipe pile body, and a plurality of fixing sleeves are respectively disposed in the second mounting grooves. The fixing sleeve includes a second connecting sleeve and a plurality of resilient abutment pieces. The second connecting sleeve is fixedly disposed in the second mounting groove and fixedly connected to one end of the steel strand. A snap-fit ​​groove is opened on the side of the second connecting sleeve facing the outside of the pipe pile body. One end of the plurality of abutment pieces is circumferentially and evenly fixed on the side wall of the snap-fit ​​groove. The plurality of abutment pieces are used to abut against the side wall of the abutment groove on the connector head.

[0010] The present invention is further configured such that: a plurality of resilient reinforcing pieces are provided circumferentially at the opening of the snap-fit ​​groove; a plurality of reinforcing grooves corresponding one-to-one with the reinforcing pieces are provided on the first connecting sleeve; a first toothed strip with a plurality of vertically distributed teeth is fixed on one side of each of the plurality of reinforcing pieces; a second toothed strip with a plurality of vertically distributed teeth is fixed in each of the plurality of reinforcing grooves; when the reinforcing piece extends into the reinforcing groove, the teeth on the first toothed strip slide against the teeth on the second toothed strip; when the reinforcing piece is pulled out of the reinforcing groove, the teeth on the first toothed strip are fixed against the teeth on the second toothed strip.

[0011] The present invention is further configured as follows: a slider is slidably provided in the second mounting groove, a slide rod is fixedly provided on the slider, a first slide groove corresponding to the slide rod is opened at the axis of the connector, a connecting hole communicating with the first slide groove is opened on the side wall of each of the several reinforcing grooves, a connecting rod is slidably provided in the connecting hole, a inclined block is fixedly provided at the end of the connecting rod facing the first slide groove, the inclined side of the inclined block slides against the top of the slide rod, an abutment joint for abutting against one side of the reinforcing plate is fixedly provided at the end of the connecting rod facing the reinforcing groove, and a first spring is also sleeved on the connecting rod, the first spring being fixedly connected to the side wall of the connecting hole and one side of the inclined block respectively.

[0012] The present invention is further configured such that: a vertical second sliding groove is provided on the side wall of the second mounting groove, the side wall of the slider slides into the second sliding groove, and a second spring is fixed between the bottom of the slider and the bottom of the second mounting groove.

[0013] Compared to the beneficial effects achieved by existing technologies:

[0014] This pipe pile achieves a fast, high-strength, and reliable mechanical connection by precisely inserting the fixing head at the end of the steel strand into the corresponding fixing sleeve of the adjacent pipe pile. This completely avoids the quality instability and deformation problems caused by traditional welded end plates, and significantly improves the durability and pull-out resistance of the joint connection. The weldless plug-in connection greatly simplifies the construction process, reduces dependence on the environment and skills, improves construction efficiency, and reduces costs. Ultimately, while ensuring structural performance, it demonstrates excellent comprehensive economic benefits and wide engineering adaptability. Attached Figure Description

[0015] Figure 1 This is a schematic cross-sectional view of the overall structure at the connection point in an embodiment of this utility model;

[0016] Figure 2 This is a cross-sectional view of the overall structure after the fixing head and fixing sleeve are connected.

[0017] Figure 3 for Figure 2 An enlarged schematic diagram of the structure at point A.

[0018] In the above attached figures: 1. Pipe pile body; 2. Steel strand; 3. High-strength wire; 4. First mounting groove; 5. First connecting sleeve; 6. Connector; 7. Abutment groove; 8. Second mounting groove; 9. Second connecting sleeve; 10. Abutment piece; 11. Snap-fit ​​groove; 12. Reinforcing piece; 13. Reinforcing groove; 14. First toothed strip; 15. Second toothed strip; 16. Sliding block; 17. Sliding rod; 18. First sliding groove; 19. Connecting hole; 20. Connecting rod; 21. Inclined block; 22. Abutment joint; 23. First spring; 24. Second sliding groove; 25. Second spring. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] Example:

[0021] Reference Figures 1-3 This application relates to a pipe pile without end plates and mechanical joints, including a pipe pile body 1 with both ends through. The pipe pile body 1 is embedded with a plurality of steel strands 2 distributed circumferentially along the axis of the pipe pile body 1. High-strength wires 3 are wound inside the pipe pile body 1 and between the plurality of steel strands 2. The above arrangement is the same as the existing pipe pile structure, and its principle will not be elaborated in detail in this article.

[0022] like Figure 1 As shown, each of the steel strands 2 has a fixed head at one end. The pipe pile body 1 has a number of first mounting grooves 4 corresponding to the steel strands 2 at one end. The fixed heads are respectively located in the first mounting grooves 4. Each fixed head includes a first connecting sleeve 5 and a connecting head 6. The first connecting sleeve 5 is fixed in the first mounting groove 4 and is fixed to one end of the steel strand 2. The connecting head 6 is fixed at the end of the first connecting sleeve 5 away from the steel strand 2 and extends out of the first mounting groove 4. The end of the connecting head 6 away from the first connecting sleeve 5 is an inverted frustum shape. The side wall of the section of the connecting head 6 extending out of the first mounting groove 4 is provided with an abutment groove 7 in an annular shape.

[0023] like Figure 1 and Figure 2As shown, each of the steel strands 2 has a fixing sleeve at one end away from the fixing head. The other end of the pipe pile body 1 has several second mounting grooves 8 corresponding to the steel strands 2. Several fixing sleeves are respectively set in the second mounting grooves 8. The fixing sleeve includes a second connecting sleeve 9 and several flexible abutment pieces 10. The second connecting sleeve 9 is fixed in the second mounting groove 8 and fixed to one end of the steel strand 2. The side of the second connecting sleeve 9 facing the outside of the pipe pile body 1 has a snap-fit ​​groove 11. One end of several abutment pieces 10 is evenly fixed on the side wall of the snap-fit ​​groove 11. The other end of several abutment pieces 10 is bent toward the center of the bottom of the snap-fit ​​groove 11. This makes it easy for the connector 6 to slide and abut against the side wall of the connector 6 when it is inserted into the snap-fit ​​groove 11. As the connector 6 is fully inserted, the bent bottom end of several abutment pieces 10 is reset by the rebound force and abuts against the side wall of the abutment groove 7 on the connector 6, preventing the connector 6 from sliding out of the snap-fit ​​groove 11.

[0024] like Figure 2 and Figure 3 As shown, the opening of the snap-fit ​​groove 11 is provided with several resilient reinforcing plates 12 circumferentially. The first connecting sleeve 5 is provided with several reinforcing grooves 13 corresponding to the reinforcing plates 12. A first toothed strip 14 with several vertically distributed teeth is fixed on one side of each of the reinforcing plates 12. A second toothed strip 15 with several vertically distributed teeth is fixed in each of the reinforcing grooves 13. When the reinforcing plate 12 extends into the reinforcing groove 13, the teeth on the first toothed strip 14 slide and abut against the teeth on the second toothed strip 15. When the reinforcing plate 12 is pulled out of the reinforcing groove 13, the teeth on the first toothed strip 14 and the teeth on the second toothed strip 15 are fixedly abut against each other. This can further strengthen the connection strength between the two pipe pile bodies 1.

[0025] like Figure 3As shown, a slider 16 is slidably disposed within the second mounting groove 8. A vertical second sliding groove 24 is formed on the side wall of the second mounting groove 8. The side wall of the slider 16 slides into the second sliding groove 24. A second spring 25 is fixed between the bottom of the slider 16 and the bottom of the second mounting groove 8. A sliding rod 17 is fixed on the slider 16. A first sliding groove 18 corresponding to the sliding rod 17 is formed at the axis of the connector 6. A connecting hole 19 communicating with the first sliding groove 18 is formed on the side wall of several reinforcing grooves 13. The connecting hole 19 is formed at... Near the bottom of the reinforcing groove 13 and the first sliding groove 18, a connecting rod 20 is slidably mounted in the connecting hole 19. An inclined block 21 is fixed to the end of the connecting rod 20 facing the first sliding groove 18. The inclined side of the inclined block 21 slides against the top of the sliding rod 17. An abutment 22 for abutting against one side of the reinforcing piece 12 is fixed to the end of the connecting rod 20 facing the reinforcing groove 13. A first spring 23 is also fitted onto the connecting rod 20, and the first spring 23 is fixed to both the side wall of the connecting hole 19 and one side of the inclined block 21. By pushing the sliding rod 17 in, it slides against the inclined block 21, pushing the inclined block 21 into the connecting hole 19. This causes the abutment 22 at the other end of the connecting rod 20 to push against the corresponding reinforcing piece 12, making the teeth on the first toothed strip 14 and the second toothed strip 15 more tightly connected, improving the stability of the connection between the pipe pile bodies 1. The aforementioned reinforcing piece 12 and abutment piece 10 can be made of high-strength spring steel.

[0026] Working principle:

[0027] When it is necessary to connect two pipe pile bodies 1, align one end of the pipe pile body 1 with the fixed head with the other pipe pile (B body with the fixed sleeve). When the inverted frustum-shaped connector 6 is inserted into the corresponding fixed sleeve's snap-fit ​​groove 11, the conical end of the connector 6 first contacts and presses inward several resilient abutment pieces 10 evenly distributed in the circumference of the fixed sleeve, forcing the abutment pieces 10 to elastically open outward. As the connector 6 continues to penetrate deeper into the snap-fit ​​groove 11, when the abutment groove 7 on the side wall of the connector 6 moves to the position corresponding to the bent bottom end of the abutment piece 10, the abutment piece 10 quickly returns to its original position inward by relying on its own elastic force. Its bent bottom end is embedded and clamped on the side wall of the abutment groove 7 of the connector 6, forming a mechanical interlock, effectively restricting the connector 6 from sliding out of the snap-fit ​​groove 11 in the opposite direction, thereby achieving the initial axial connection and pull-out resistance of the two pipe pile bodies 1.

[0028] During the insertion of the connector 6 into the snap-fit ​​groove 11, several resilient reinforcing plates 12 circumferentially arranged at the opening of the snap-fit ​​groove 11 will simultaneously insert into the corresponding reinforcing grooves 13 on the first connecting sleeve 5. The first toothed strip 14 fixed on one side of the reinforcing plate 12 and the second toothed strip 15 fixed in the reinforcing groove 13 will make relative sliding contact. When the connector 6 is completely locked by the abutment plate 10, if it is subjected to a force that attempts to pull the two pipe pile bodies 1 axially apart, the reinforcing plate 12 will be pulled outward from the reinforcing groove 13. At this time, the teeth on the first toothed strip 14 and the teeth on the second toothed strip 15 will mesh and lock together, generating strong anti-pull-out resistance, which significantly enhances the ability of the connection node to resist axial pull-out.

[0029] After the connector 6 is fully inserted into the snap-fit ​​groove 11 and locked, the slider 16, which slides in the second mounting groove 8, is always in contact with the end of the connector 6 due to the elastic force of the second spring 25. The slider rod 17 fixed on the slider 16 is pushed into the first sliding groove 18 opened at the axis of the connector 6. The top of the slider rod 17 contacts and slides against the inclined surface of the inclined block 21 located at the entrance of the connection hole 19. The pushing force of the slider rod 17 is converted into a force that pushes the inclined block 21 into the connection hole 19 through the inclined surface of the inclined block 21. The inclined block 21 drives the connecting rod 20 fixed to it to move towards the reinforcing groove 13, so that the abutment 22 at the other end of the connecting rod 20 strongly pushes the corresponding reinforcing piece 12. This pushing force forces the reinforcing piece 12 to press more tightly against the side wall or meshing surface of the reinforcing groove 13, thereby making the meshing between the first toothed strip 14 and the second toothed strip 15 deeper, tighter and stronger.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A type of pipe pile without end plates and mechanical joints, comprising a pipe pile body (1) extending through both ends, characterized in that: The pipe pile body (1) is embedded with a plurality of steel strands (2) distributed circumferentially along the axis of the pipe pile body (1). High-strength wires (3) are wound inside the pipe pile body (1) and between the plurality of steel strands (2). One end of each of the plurality of steel strands (2) is provided with a fixing head. The end of each of the plurality of steel strands (2) away from the fixing head is provided with a fixing sleeve. The plurality of fixing heads are used to fix and insert into a plurality of fixing sleeves that correspond one-to-one on another pipe pile body (1).

2. The pipe pile without end plate mechanical joint according to claim 1, characterized in that: One end of the pipe pile body (1) is provided with a plurality of first mounting grooves (4) corresponding one-to-one with the steel strands (2). A plurality of fixing heads are respectively provided in the first mounting grooves (4). The fixing head includes a first connecting sleeve (5) and a connecting head (6). The first connecting sleeve (5) is fixed in the first mounting groove (4) and fixed to one end of the steel strands (2). The connecting head (6) is fixed at one end of the first connecting sleeve (5) away from the steel strands (2) and extends out of the first mounting groove (4). The side wall of the connecting head (6) extending out of the first mounting groove (4) is provided with an abutment groove (7).

3. The pipe pile without end plate mechanical joint according to claim 2, characterized in that: The other end of the pipe pile body (1) is provided with a plurality of second mounting grooves (8) corresponding one-to-one with the steel strands (2). A plurality of fixing sleeves are respectively provided in the second mounting grooves (8). The fixing sleeve includes a second connecting sleeve (9) and a plurality of resilient abutment pieces (10). The second connecting sleeve (9) is fixed in the second mounting groove (8) and fixed to one end of the steel strands (2). The second connecting sleeve (9) has a snap-fit ​​groove (11) on the side facing the outside of the pipe pile body (1). One end of the plurality of abutment pieces (10) is circumferentially and uniformly fixed on the side wall of the snap-fit ​​groove (11). The plurality of abutment pieces (10) are used to abut against the side wall of the abutment groove (7) on the connector (6).

4. A pipe pile without end plates and mechanical joints according to claim 3, characterized in that: The opening of the snap-fit ​​groove (11) is provided with a plurality of resilient reinforcing pieces (12) in the circumferential direction. The first connecting sleeve (5) is provided with a plurality of reinforcing grooves (13) corresponding to the reinforcing pieces (12). A first toothed strip (14) with a plurality of vertically distributed teeth is fixed on one side of each of the plurality of reinforcing pieces (12). A second toothed strip (15) with a plurality of vertically distributed teeth is fixed in each of the plurality of reinforcing grooves (13). When the reinforcing piece (12) is pushed into the reinforcing groove (13), the teeth on the first toothed strip (14) and the teeth on the second toothed strip (15) slide into each other. When the reinforcing piece (12) is pulled out of the reinforcing groove (13), the teeth on the first toothed strip (14) and the teeth on the second toothed strip (15) are fixedly abutted.

5. A pipe pile without end plates and mechanical joints according to claim 4, characterized in that: A slider (16) is slidably provided in the second mounting groove (8). A slide rod (17) is fixed on the slider (16). A first slide groove (18) corresponding to the slide rod (17) is opened at the axis of the connector (6). A connecting hole (19) communicating with the first slide groove (18) is opened on the side wall of several reinforcing grooves (13). A connecting rod (20) is slidably provided in the connecting hole (19). An inclined block (21) is fixed on the end of the connecting rod (20) facing the first slide groove (18). The inclined side of the inclined block (21) slides against the top of the slide rod (17). An abutment (22) for abutting against one side of the reinforcing piece (12) is fixed on the end of the connecting rod (20) facing the reinforcing groove (13). A first spring (23) is also sleeved on the connecting rod (20). The first spring (23) is fixed to the side wall of the connecting hole (19) and one side of the inclined block (21).

6. A pipe pile without end plate mechanical joint according to claim 5, characterized in that: A vertical second sliding groove (24) is provided on the side wall of the second mounting groove (8). The side wall of the slider (16) slides into the second sliding groove (24). A second spring (25) is fixed between the bottom of the slider (16) and the bottom of the second mounting groove (8).

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