Conical pipe pile connector

Abstract

The utility model relates to the technical field of pipe pile connectors, and provides a conical pipe pile connector which is used for connecting a foundation and a pipe pile, an outer sleeve is used for being arranged in the foundation in a pouring mode, a conical cavity is formed in the outer sleeve, and an insertion opening is formed in the small-diameter end of the outer sleeve and communicates with the small-diameter end; the multiple locking pieces are distributed in the circumferential direction of the conical cavity, a locking space is formed among the multiple locking pieces, and the locking pieces are used for sliding along the inner wall of the conical cavity to adjust the size of the locking space; the elastic piece is arranged in the outer sleeve, the two ends of the elastic piece are connected with the locking piece and the outer sleeve correspondingly, and the elastic piece is used for elastically pushing the locking piece so that the locking piece can be close to the small-diameter end of the conical cavity; one end of the connecting piece can enter the locking space through the inserting opening and push the locking piece so that the locking piece can be close to the large-diameter end of the conical cavity, and the other end of the connecting piece is used for being connected with a pipe pile. By means of the technical scheme, the technical problems that in the prior art, a pipe pile connector is complex in structure and not easy to assemble are solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of pipe pile joint technology, and more specifically, to a tapered pipe pile joint. Background Technology

[0002] In the field of construction engineering, pipe pile foundations are widely used in various types of buildings. They can effectively improve the bearing capacity of the foundation and ensure the stability of the building. During the construction of pipe pile foundations, the pipe pile joint is a key component connecting the bottom cast-in-place foundation with the upper pipe pile, and its performance directly affects the quality and stability of the entire pipe pile foundation.

[0003] However, existing pipe pile joints generally suffer from complex structures. In actual assembly, this complexity leads to cumbersome assembly steps, requiring construction workers to spend considerable time aligning and securing various components, making the operation difficult. This assembly process is time-consuming and labor-intensive, reducing construction efficiency.

[0004] In summary, the existing pipe pile joint structure and assembly method have many defects, and there is an urgent need for a new type of pipe pile joint with simple structure and convenient assembly to meet the actual needs of construction projects. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a tapered pipe pile joint, which solves the technical problem that the pipe pile joint has a complex structure and is not easy to assemble in the related art.

[0006] According to one aspect, at least one embodiment of this disclosure provides a tapered pipe pile joint for connecting a foundation and a pipe pile, including an outer sleeve, a locking member, an elastic member, and a connecting member. The outer sleeve is used for casting and setting within the foundation. The inner surface of the outer sleeve has a tapered cavity, with a large-diameter end and a small-diameter end at both ends of the tapered cavity. The small-diameter end of the outer sleeve has an insertion port that communicates with the small-diameter end.

[0007] The locking member is slidably disposed within the conical cavity. There are multiple locking members distributed circumferentially along the conical cavity, and a locking space is formed between the multiple locking members. The locking member is used to slide along the inner wall of the conical cavity to adjust the size of the locking space.

[0008] The elastic element is disposed inside the outer sleeve, and its two ends are respectively connected to the locking element and the outer sleeve. The elastic element is used to elastically push the locking element so that the locking element is close to the small diameter end of the conical cavity.

[0009] One end of the connector can enter the locking space through the insertion port and push the locking member so that the locking member is close to the large-diameter end of the conical cavity. The other end of the connector is used to connect to the pipe pile.

[0010] For example, in at least one embodiment of the present disclosure, a tapered pipe pile connector further includes: the outer circumferential diameter of the connector and the inner circumferential diameter of the locking member both gradually decrease in the direction close to the insertion port.

[0011] For example, in at least one embodiment of the present disclosure, a tapered pipe pile connector further includes: the outer periphery of the connector has a locking portion, the inner wall of the locking member has a locking groove, and the locking portion is used to engage with the locking groove;

[0012] The locking part consists of multiple annular buckles distributed along the axial direction of the connector, and the multiple annular buckles are parallel to each other. The locking groove consists of multiple annular grooves distributed along the axial direction of the locking member, and the multiple annular grooves are parallel to each other. The annular buckles are used to engage with the annular grooves.

[0013] For example, in at least one embodiment of the present disclosure, a tapered pipe pile connector further includes: the end of the connector has a guide cone, the guide cone being able to contact and push the end of the locking member so that the connector enters the locking space.

[0014] For example, in at least one embodiment of the present disclosure, a tapered pipe pile joint is provided, which further includes a retaining spring, the outer periphery of the locking member has a receiving groove, the retaining spring is disposed in the receiving groove of a plurality of locking members, and the retaining spring is capable of combining a plurality of locking members together.

[0015] For example, in at least one embodiment of the present disclosure, a tapered pipe pile joint is provided, which further includes: the outer sleeve includes a buckle cover, the outer periphery of the outer sleeve has a buckle groove, the buckle cover is fastened in the buckle groove, the buckle cover can block the end of the outer sleeve, and the two ends of the elastic member are respectively connected to the locking member and the buckle cover.

[0016] For example, in at least one embodiment of the present disclosure, a tapered pipe pile connector further includes: a locking groove on the bottom wall of the snap groove, and a locking part on the snap cover, the locking part being used to engage with the locking groove.

[0017] For example, in at least one embodiment of the present disclosure, a tapered pipe pile joint is provided, which further includes: the buckle cover has a toothed groove, the toothed groove can expose the bottom wall of the buckle groove, so that the bottom wall of the buckle groove can contact the foundation grout.

[0018] For example, in at least one embodiment of the present disclosure, a tapered pipe pile connector further includes: the connector has a connecting square post, the connecting square post has a plane, and the plane is used to contact a pliers tool.

[0019] For example, in at least one embodiment of this disclosure, a tapered pipe pile connector further includes: a screw on the connecting square column, the screw being threaded to a threaded hole on the end face of the pipe pile for connecting the pipe pile.

[0020] The beneficial effects of the embodiments disclosed herein are as follows:

[0021] Compared to existing pipe pile joints, the tapered pipe pile joint in this disclosure consists of only a few main components: an outer sleeve, a locking element, an elastic element, and a connecting element. It avoids complex component combinations, reducing manufacturing difficulty and cost. The assembly process simply involves inserting the connecting element into the locking space within the outer sleeve; the elastic element and the tapered cavity's structural characteristics automatically complete the locking process, significantly reducing the operational difficulty for construction workers and improving construction efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0023] Figure 1 This is a structural schematic diagram of the assembly state of a tapered pipe pile joint in one embodiment of the present disclosure;

[0024] Figure 2 for Figure 1 An exploded view of a tapered pipe pile joint structure in one embodiment;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 for Figure 1 A schematic diagram of the internal structure of a tapered pipe pile joint in one embodiment;

[0027] Figure 5 for Figure 1 The embodiment shows a schematic diagram of the outer sleeve and the snap cover.

[0028] In the diagram: 1. Foundation, 2. Pipe pile, 3. Outer sleeve, 4. Locking element, 5. Elastic element, 6. Connecting element, 301. Conical cavity, 302. Insertion port, 401. Locking space, 601. Snap-fit ​​part, 402. Snap-fit ​​groove, 602. Guide cone, 7. Snap-fit ​​spring, 403. Receiving groove, 303. Cover, 304. Snap-fit ​​groove, 3041. Locking groove, 3031. Locking part, 3032. Toothed groove, 603. Connecting square column, 604. Screw. Detailed Implementation

[0029] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0032] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] like Figures 1-5As shown, a tapered pipe pile 2 connector according to an embodiment of the present disclosure is used to connect a foundation 1 and a pipe pile 2. It includes an outer sleeve 3, a locking member 4, an elastic member 5, and a connecting member 6. The outer sleeve 3 is used to be cast into the foundation 1. The inner part of the outer sleeve 3 has a tapered cavity 301. The two ends of the tapered cavity 301 are a large diameter end and a small diameter end, respectively. The small diameter end of the outer sleeve 3 has an insertion port 302, which communicates with the small diameter end.

[0036] The locking member 4 is slidably disposed in the conical cavity 301. There are multiple locking members 4 and they are distributed circumferentially along the conical cavity 301. A locking space 401 is formed between the multiple locking members 4. The locking member 4 is used to slide along the inner wall of the conical cavity 301 to adjust the size of the locking space 401.

[0037] The elastic element 5 is disposed inside the outer sleeve 3, and its two ends are respectively connected to the locking element 4 and the outer sleeve 3. The elastic element 5 is used to elastically push the locking element 4 so that the locking element 4 is close to the small diameter end of the conical cavity 301.

[0038] One end of the connector 6 can enter the locking space 401 through the insertion port 302 and push the locking member 4 so that the locking member 4 is close to the large diameter end of the conical cavity 301. The other end of the connector 6 is used to connect the pipe pile 2.

[0039] For example, such as Figures 1-4 As shown, during construction, the outer sleeve 3 is first poured into the foundation 1. At this time, the elastic element 5 inside the outer sleeve 3 is in a natural state. Under its elastic pushing action, multiple locking elements 4 distributed circumferentially along the conical cavity 301 approach the small diameter end of the conical cavity 301, and the locking space 401 formed between the multiple locking elements 4 is relatively small.

[0040] Next, the bottom end of the connector 6, which is connected to the pipe pile 2, needs to be inserted into the locking space 401 through the insertion port 302. During the insertion process, the connector 6 will first push the locking member 4, causing the elastic member 5 to be compressed. The locking member 4 overcomes the elastic force of the elastic member 5 and slides along the inner wall of the conical cavity 301 towards the large diameter end, thereby gradually increasing the size of the locking space 401 until the connector 6 is inserted into the locking space 401.

[0041] When the connector 6 is fully inserted into the locking space 401, the elastic element 5 elastically resets, and the elastic force it generates pushes the locking element 4 to move back towards the small diameter end of the conical cavity 301, and the locking space 401 becomes smaller.

[0042] Because the small-diameter end of the conical cavity 301 is close to the insertion port 302, if the connector 6 is pulled out, it will be subjected to the squeezing force of the conical inner wall of the conical cavity 301, which makes it impossible to pull out the connector 6, thus achieving a stable locking connection. Multiple joints are evenly installed on the end face of the pipe pile 2 along the circumference, which can effectively ensure the uniformity of the locking force when the pipe pile 2 is connected to the foundation 1.

[0043] Compared to existing pipe pile 2-joints, the tapered pipe pile 2-joint in this design consists of only a few main components: an outer sleeve 3, a locking element 4, an elastic element 5, and a connecting element 6. This eliminates the need for complex component combinations, reducing manufacturing difficulty and costs. The assembly process simply involves inserting the connecting element 6 into the locking space 401 within the outer sleeve 3. The elastic element 5 and the tapered cavity 301 automatically complete the locking process, significantly reducing the operational difficulty for construction workers and improving construction efficiency.

[0044] In some examples, the outer diameter of the connector 6 and the inner diameter of the locking member 4 both gradually decrease in the direction close to the insertion port 302.

[0045] For example, such as Figures 2-4 As shown, the outer diameter of the connector 6 and the inner diameter of the locking member 4 both gradually decrease in the direction close to the insertion port 302. This gradually decreasing tapered structure makes the fit between the connector 6 and the locking member 4 tighter. If there is a force pulling out the connector 6, as the connector 6 moves outward, due to the characteristics of the tapered structure, the clamping force of the locking member 4 on the connector 6 will increase, thereby enhancing the locking effect between the two.

[0046] In some examples, the outer periphery of the connector 6 has a locking portion 601, and the inner wall of the locking member 4 has a locking groove 402, the locking portion 601 being used to engage with the locking groove 402;

[0047] The locking part 601 consists of a plurality of annular buckles distributed along the axial direction of the connector 6, and the plurality of annular buckles are parallel to each other. The locking groove 402 consists of a plurality of annular grooves distributed along the axial direction of the locking member 4, and the plurality of annular grooves are parallel to each other. The annular buckles are used to engage with the annular grooves.

[0048] For example, such as Figures 2-4 As shown, when the connector 6 is inserted into the locking space 401, multiple annular buckles gradually align with multiple annular grooves. The parallel distribution of the annular buckles and grooves allows for smoother engagement during the locking process. Once the connector 6 is fully inserted and locked, the multiple annular buckles and grooves engage tightly, forming a multi-layered locking structure.

[0049] The snap-fit ​​structure with multiple annular buckles and grooves increases the contact area between the connector 6 and the locking element 4. The annular design disperses the force, effectively improving the stability of the connection between the pipe pile 2 and the foundation 1. The parallel distribution of annular buckles and grooves makes it easier for the connector 6 to be inserted into the locking space 401 and snap-fitted, reducing the difficulty of installation.

[0050] In some examples, the connector 6 has a guide cone 602 at its end, which can contact and push the end of the locking member 4 to allow the connector 6 to enter the locking space 401.

[0051] For example, such as Figures 2-4 As shown, when installing the pipe pile 2 connector, the guide cone 602 at the end of the connector 6 first contacts the end of the locking member 4, and the guide cone 602 begins to push the locking member 4. Because the guide cone 602 has an inclined angle, during the pushing process, the locking member 4 will not only slide along the inner wall of the conical cavity 301 towards the larger diameter end, thereby expanding the locking space 401 and facilitating the subsequent insertion of the connector 6; at the same time, the guide cone 602 will also apply a radially outward expanding force to the locking member 4, causing the locking member 4 to fit tightly against the inner wall of the conical cavity 301.

[0052] The presence of the guide cone 602 makes the process of inserting the connector 6 into the locking space 401 smoother, realizing the pushing and expanding action of the locking member 4. The guide cone 602 keeps the locking member 4 close to the inner wall of the conical cavity 301, ensuring that the connector 6 is always in the center position during the insertion process, avoiding the problem of displacement.

[0053] In some examples, a retaining ring 7 is also included, the outer periphery of the locking member 4 having a receiving groove 403, the retaining ring 7 being disposed within the receiving groove 403 of a plurality of the locking members 4, the retaining ring 7 being capable of combining a plurality of the locking members 4 together.

[0054] For example, such as Figure 2 As shown, when assembling the pipe pile 2 joint, first open the snap ring 7 and align it with the receiving groove 403 of the multiple locking parts 4, then release the snap ring 7. The snap ring 7, relying on its own elastic force, is embedded into the receiving groove 403 of the multiple locking parts 4, thereby combining the multiple locking parts 4 together.

[0055] Without the retaining ring 7, multiple locking components 4 are prone to becoming scattered and misaligned during installation, increasing assembly difficulty. The retaining ring 7, however, allows for quick assembly without the need for repeated adjustments to the position of each locking component 4, significantly improving assembly efficiency. The retaining ring 7 has a simple structure and is easy to install, effectively binding multiple locking components 4 together and enhancing the overall structural strength and stability of the locking components 4.

[0056] In some examples, the outer sleeve 3 further includes a cover 303, the outer sleeve 3 has a fastening groove 304 on its outer periphery, the cover 303 is fastened in the fastening groove 304, the cover 303 can block the end of the outer sleeve 3, and the two ends of the elastic member 5 are respectively connected to the locking member 4 and the cover 303.

[0057] For example, such as Figure 1 , 2 As shown in Figure 5, after assembling the locking element 4 and the elastic element 5 inside the outer sleeve 3, the buckle cover 303 is installed. Align the buckle cover 303 with the buckle groove 304 on the outer periphery of the outer sleeve 3, and press the buckle cover 303 so that it engages within the buckle groove 304. Once installed, the buckle cover 303 seals the end of the outer sleeve 3, preventing external debris from entering. Simultaneously, one end of the elastic element 5 is connected to the locking element 4, and the other end is connected to the buckle cover 303. The buckle cover 303 provides a stable support point for the elastic element 5, ensuring that the elastic element 5 can properly perform its elastic deformation and reset functions under stress.

[0058] In some examples, the bottom wall of the buckle groove 304 has a locking groove 3041, and the buckle cover 303 has a locking part 3031, which is used to engage with the locking groove 3041.

[0059] For example, such as Figure 4 and 5 As shown, when the cover 303 is fully engaged within the groove 304, the locking part 3031 can engage with the locking groove 3041. During operation, when the elastic element 5 is compressed due to the insertion of the connecting part 6, the elastic element 5 applies a significant force to the cover 303. At this time, due to the engaging action between the locking part 3031 and the locking groove 3041, the cover 303 can be stably fixed to the outer sleeve 3 without loosening, ensuring the stability of the connector structure. The engaging design between the locking part 3031 and the locking groove 3041 enhances the connection strength between the cover 303 and the outer sleeve 3.

[0060] In some examples, the cover 303 has a toothed groove 3032 that exposes the bottom wall of the groove 304, allowing the bottom wall of the groove 304 to contact the mortar of the foundation 1.

[0061] For example, such as Figure 2As shown, during the foundation 1 pouring operation, the toothed groove 3032 on the cover 303 exposes the bottom wall of the groove 304. When concrete or other pourable materials are poured into the foundation 1, the pourable material flows into the space formed by the toothed groove 3032 and comes into full contact with the bottom wall of the groove 304. A tight bond is formed between the bottom wall of the groove 304 and the pourable material. After the pourable material solidifies, the cover 303, the outer sleeve 3, and the foundation 1 form a stable integral structure.

[0062] The toothed groove 3032 increases the contact area between the bottom wall of the interlocking groove 304 and the cast-in-place material, effectively improving friction and interlocking force, making the connection between the outer sleeve 3 and the foundation 1 more secure, and enhancing the stability of the entire joint in the foundation 1. When the pipe pile 2 bears the load from the superstructure, it can better transfer the force to the foundation 1.

[0063] In some examples, the connector 6 has a connecting post 603 with a flat surface for contacting a pliers tool.

[0064] In some examples, the connecting column 603 has a screw 604 that can be threaded into a threaded hole on the end face of the pipe pile 2 for connecting the pipe pile 2.

[0065] For example, such as Figure 1 and 2 As shown, during the assembly of the pipe pile 2 and the connector 6, since the connecting square column 603 has a flat surface, construction workers can use pliers such as pipe wrenches or wrenches to clamp the jaws onto the flat surface of the connecting square column 603. By applying torque with the pliers, the screw 604 is stably screwed into the threaded hole on the end face of the pipe pile 2. The pliers, utilizing the stable force point provided by the flat surface of the connecting square column 603, can control the rotational force and speed of the screw 604, reducing the assembly difficulty until the screw 604 is screwed into the threaded hole, completing the connection between the pipe pile 2 and the connector 6.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure 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 disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A tapered pipe pile joint for connecting a ground foundation (1) and a pipe pile (2), characterized in that, The utility model relates to a pipe pile connecting device, including outer sleeve (3), locking piece (4), elastic element (5) and connecting piece (6), the outer sleeve (3) is used for pouring setting in the foundation (1), the outer sleeve (3) inside has conical cavity (301), the both ends of conical cavity (301) are large diameter end and small diameter end respectively, the small diameter end of outer sleeve (3) has insertion port (302), insertion port (302) communicates small diameter end, Locking piece (4) is slidably arranged in conical cavity (301), locking piece (4) is multiple and is distributed along the circumference of conical cavity (301), and locking space (401) is formed between multiple locking piece (4), locking piece (4) is used for sliding along the inner wall of conical cavity (301) to adjust the size of locking space (401), Elastic element (5) is arranged in outer sleeve (3), and both ends are connected with locking piece (4) and outer sleeve (3) respectively, elastic element (5) is used for elastically pushing locking piece (4), so that locking piece (4) is close to the small diameter end of conical cavity (301), One end of connecting piece (6) can enter locking space (401) from insertion port (302) and push locking piece (4), so that locking piece (4) is close to the large diameter end of conical cavity (301), and the other end of connecting piece (6) is used for connecting pipe pile (2).

2. A tapered pipe pile joint according to claim 1, wherein The outer diameter of connecting piece (6) and the inner diameter of locking piece (4) gradually decrease along the direction close to insertion port (302).

3. A tapered pipe pile joint according to claim 2, wherein Connecting piece (6) has clamping portion (601) on the outer periphery, and the inner wall of locking piece (4) has clamping groove (402), and clamping portion (601) is used for clamping with clamping groove (402); Clamping portion (601) is a plurality of annular buckles distributed along the axial direction of connecting piece (6), and a plurality of annular buckles are parallel to each other, clamping groove (402) is a plurality of annular grooves distributed along the axial direction of locking piece (4), and a plurality of annular grooves are parallel to each other, and annular buckle is used for clamping with annular groove.

4. A tapered pipe pile joint according to claim 3, wherein The end of connecting piece (6) has guide frustum (602), and guide frustum (602) can contact and push the end of locking piece (4), so that connecting piece (6) enters locking space (401).

5. A tapered pipe pile joint according to claim 1, wherein It also includes a snap spring (7), the outer periphery of the locking piece (4) has a receiving groove (403), the snap spring (7) is arranged in the receiving groove (403) of the plurality of locking pieces (4), and the snap spring (7) can combine the plurality of locking pieces (4) together.

6. A tapered pipe pile joint according to claim 1, wherein The outer sleeve (3) further comprises a buckle cover (303), the outer sleeve (3) has a buckle groove (304) on the outer periphery, the buckle cover (303) is arranged in the buckle groove (304), the buckle cover (303) can block the end of the outer sleeve (3), and the elastic element (5) is connected with the locking piece (4) and the buckle cover (303) at both ends.

7. A tapered pipe pile joint according to claim 6, wherein The bottom wall of the buckle groove (304) is provided with a locking groove (3041), and the buckle cover (303) is provided with a locking portion (3031) for clamping with the locking groove (3041).

8. A tapered pipe pile joint according to claim 7, wherein The buckle cover (303) is provided with a tooth-shaped groove (3032), which can expose the bottom wall of the buckle groove (304) to contact the bottom wall of the buckle groove (304) with the pouring material of the foundation (1).

9. A tapered pipe pile joint according to claim 1, wherein The connecting piece (6) is provided with a connecting square column (603) having a flat surface for contacting a pliers tool.

10. A tapered pipe pile joint according to claim 9, wherein The connecting square column (603) is provided with a screw rod (604) capable of being screwed with a threaded hole in the end face of the pipe pile (2) for connecting the pipe pile (2).

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