Pipe pile lock catch connecting device

Abstract

The utility model relates to a tubular pile lock catch connecting device in the technical field of pile foundation engineering, which comprises a secondary fastener and a primary fastener, the secondary fastener and the primary fastener are respectively provided with a supporting body part and a base part which are coaxially and fixedly connected to the outer walls of two adjacent tubular piles, and the corresponding sides of the supporting body part and the base part are respectively connected with a plug part and a slot part. The slot part is provided with a through groove which corresponds to the axial insertion of the plug part, and the groove bottom surface of the through groove is provided with a glue pouring groove; according to the pipe pile lock catch connecting device, the sealing performance and the connecting strength can be improved.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation engineering technology, and in particular to a pipe pile locking connection device. Background Technology

[0002] As is well known, steel pipe pile cofferdams are a common type of temporary hydraulic structure, widely used in bridge foundation construction, port and wharf construction, water conservancy projects and deep-water foundation operations. The basic principle is to use steel pipe piles driven into the bottom of the water or soil to create a closed working space. By pumping or isolating water, a dry working environment is created inside the cofferdam, which facilitates the construction of the lower structure such as the abutment and pier foundation.

[0003] In existing technologies, to improve the water-stopping properties and overall stability of steel pipe pile cofferdams, interlocking structures are typically installed on the sidewalls of the steel pipe piles. These structures form a closed water-blocking system through the interlocking of adjacent piles, which is convenient to construct and has high connection efficiency. The forms of these interlocking structures are mostly based on the interlocking structure of steel sheet piles, such as the "C9 shape", ball-and-socket shape, U shape, or T shape. For example, the Chinese patent with announcement number CN112554170A uses a T-shaped structure. However, existing interlocking structures still have problems with insufficient strength and poor sealing performance. In engineering environments with high load-bearing capacity and abundant groundwater, the interlocking parts often become weak points, prone to cracking and leakage, which leads to a decrease in the overall load-bearing capacity of the pile body and may even cause structural safety hazards. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art and solve the existing technical problems, this utility model discloses a pipe pile locking connection device, which can increase sealing and connection strength.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pipe pile locking connection device includes a male fastener and a female fastener. The male fastener and the female fastener are respectively provided with a support part and a base part for coaxially fixing to the outer wall of two adjacent pipe piles. The corresponding sides of the support part and the base part are respectively connected to a plug part and a slot part. The slot part is provided with a through groove for axial insertion of the corresponding plug part. The bottom surface of the through groove is provided with a glue filling groove.

[0007] Furthermore, the plug portion is configured as a long column with a trapezoidal cross-section, the support portion is integrally connected to the center of the trapezoidal upper bottom surface of the plug portion, the cavity of the through groove is slidably adapted to the plug portion, and the opening of the through groove is constricted and slidably adapted to the support portion.

[0008] Furthermore, the head end face of the plug is connected to a scraper with a corresponding through groove.

[0009] Furthermore, the base portion is provided with a grouting channel on the side corresponding to the connecting pipe pile.

[0010] Furthermore, a flow guide block for sealing the grouting channel is fixed to the tail end face of the base portion, and flow guide holes for communicating with the grouting channel are provided on both sides of the flow guide block.

[0011] Furthermore, the flow guide hole is equipped with a one-way valve for outward flow.

[0012] Furthermore, the lower trapezoidal surface of the plug portion is provided with a groove corresponding to the glue-filling groove.

[0013] Furthermore, a cleaning column with an axially corresponding groove is fixed on the outer surface of the flow guide block near the slot.

[0014] Furthermore, the end face of the cleaning column corresponding to the groove is provided with a blind hole.

[0015] Furthermore, the axial surfaces of both the male and female fasteners are rounded, and a glue-filling gap is left between the slot and the through groove.

[0016] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0017] The pipe pile locking connection device disclosed in this utility model, through the matching structure of the slot part and the plug part, and the provided glue filling groove, can ensure that the slot part and the plug part are always filled with sealant on the basis of plug-in connection, which greatly increases the connection strength and sealing performance.

[0018] Furthermore, by setting scrapers and cleaning columns, the through grooves and recesses can be cleaned during the sliding insertion of the male and female fasteners, keeping them clean and improving adhesiveness. The addition of guide blocks ensures the cleanliness of the grouting channel during the overall pile driving process. Compared with the existing locking structure without grouting areas, this utility model uses grouting channels for grouting, which makes up for the shortcomings of traditional processes where the connector ends lack anti-corrosion and waterproof measures. It can achieve full-length waterproof sealing, increasing sealing performance, construction applicability, and durability. Attached Figure Description

[0019] Figure 1 This is a perspective view of this utility model;

[0020] Figure 2 This is a three-dimensional schematic diagram of the present invention from another angle;

[0021] Figure 3 This is a schematic diagram of the end face structure of the female fastener;

[0022] Figure 4 This is a schematic diagram of the end face structure of the sub-fastener;

[0023] Figure 5 This is a schematic diagram of the structure of the flow guide block;

[0024] Figure 6 This is a schematic diagram of the usage state of this utility model.

[0025] In the diagram: 1. Female fastener; 101. Base; 102. Slot; 103. Through groove; 104. Glue filling groove; 105. Grouting channel; 2. Female fastener; 201. Support body; 202. Plug; 203. Groove; 3. Scraper; 4. Guide block; 401. Guide hole; 5. One-way valve; 6. Cleaning column; 601. Blind hole. Detailed Implementation

[0026] The technical solution of this utility model will be described below with reference to the accompanying drawings of the embodiments of this utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this utility model for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0027] Combined with appendix Figure 1-5 The aforementioned pipe pile locking connection device includes a male fastener 2 and a female fastener 1. The male fastener 2 and female fastener 1 are respectively provided with a support portion 201 and a base portion 101 for coaxially fixed connection to the outer walls of two adjacent pipe piles. Typically, the support portion 201 and the base portion 101 are welded to the corresponding pipe piles to ensure sufficient connection strength and sealing. A plug portion 202 and a slot portion 102 are respectively connected to corresponding sides of the support portion 201 and the base portion 101. The slot portion 102 is provided with a through groove 103 for axial insertion of the plug portion 202. Since the pipe piles are driven into the ground sequentially, the plug portion 202 is inserted from one end of the slot portion 102. As needed, see attached... Figure 4As shown, the plug portion 202 is designed as a long column with a trapezoidal cross-section. The support portion 201 is narrower than the plug portion 202. The support portion 201 is integrally connected to the center of the trapezoidal upper bottom surface of the plug portion 202. The trapezoidal structure provides a larger contact area and higher structural rigidity. The cavity of the through groove 103 is slidably adapted to the plug portion 202. The opening of the through groove 103 is tapered and slidably adapted to the support portion 201 to ensure smooth insertion. In addition, the axial surfaces of the male fastener 2 and the female fastener 1 are both rounded, that is, the sides are rounded. The slot portion 10 A gap for filling the through groove 103 is left between 2 and the through groove 103. Applying sealant to more contact surfaces will result in better sealing performance and structural strength. The bottom surface of the through groove 103 is provided with a filling groove 104 for filling sealant. In addition, waste residue and dust are usually discharged during the drilling process. The head end face of the plug part 202 is connected to a scraper 3 corresponding to the through groove 103. When the slot part 102 of the female fastener 1 is inserted into the scraper 3 of the plug part 202, the scraper 3 can slide and clean the through groove 103 to keep it clean and facilitate adhesive bonding.

[0028] As needed, the base part 101 is provided with a grouting channel 105 on the side corresponding to the connecting pipe pile. The grouting channel 105 is actually formed by welding the grouting groove wall on the surface of the base part 101 and the corresponding outer wall of the pipe pile. After the pipe pile is inserted, grouting is carried out from the grouting channel 105 to ensure that the connection area between the pipe piles, the male fastener 2 and the female fastener 1 is filled with grout. Compared with the traditional "no grouting area" design on the market, this design, combined with the grouting process, makes up for the shortcomings of the traditional process where the connector end has no anti-corrosion and waterproof measures. It can achieve full-length waterproof sealing, increase sealing performance, construction applicability and durability. In addition, the tail end face of the base part 101 is fixed with a guide block 4 for sealing the grouting channel 105. The guide block 4 can prevent debris from directly entering the grouting channel 105 from below when the female fastener 1 is inserted with the pipe pile. Both sides of the guide block 4 are provided with guide holes 401 that connect to the grouting channel 105. Specifically, a hole is dug on the end face of the guide block 4. The groove is designed so that the groove opening corresponds to the port of the grouting channel 105. Then, a guide hole 401 is machined on the side of the guide block 4. The guide hole 401 is equipped with a one-way valve 5 for outward flow, so that external debris cannot enter from the guide hole 401, while the grout can flow out from the guide hole 401. As needed, the lower bottom surface of the plug part 202 is provided with a groove 203 corresponding to the glue filling groove 104. The groove 203 can form a glue filling channel with a diameter of about 10mm corresponding to the glue filling groove 104, which facilitates the injection of sealant. In addition, a cleaning column 6 corresponding to the groove 203 is fixed on the outer surface of the guide block 4 near the slot part 102. It is generally a rubber column. Similarly, during the corresponding insertion of the male fastener 2 and the female fastener 1, the rubber column can be used to clean the groove 203. In addition, the end face of the cleaning column 6 corresponding to the groove 203 is provided with a blind hole 601. The injected sealant can also flow into the blind hole 601, and the whole is glued together.

[0029] The pipe pile locking connection device described in this utility model is as follows: Figure 6 As shown, taking two adjacent pipe piles as an example, firstly, the scraper 3 is welded to the end face of the sub-fastener 2, the support part 201 of the sub-fastener 2 is welded to one pipe pile, and the base part 101 of the mother fastener 1 is welded to another pipe pile. Then, the guide block 4 is welded to the corresponding end face of the base part 101. It should be noted that during construction, the pipe pile with the sub-fastener 2 is driven into the ground first, so that the scraper 3 is always facing upward and outward. Then, the pipe pile with the mother fastener 1 is driven in, and the guide block 4 is downward, so that the cleaning column 6 can clean the groove 203 and the scraper 3 can also clean the through groove 103. After the plug part 202 and the slot part 102 are slidably inserted and fitted, grout is injected through the upper port of the grouting channel 105 and discharged from the one-way valve 5, forming a grouting body of about two meters at the bottom. The sealant is injected through the grouting channel formed by the grouting groove 104 and the groove 203. The sealant fills the connection area of ​​the sub-fastener 2 and the mother fastener 1 and forms a sealed body after solidification.

[0030] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A locking connection device for pipe piles, characterized in that: It includes a male fastener and a female fastener. The male fastener and the female fastener are respectively provided with a support part and a base part for coaxially fixing to the outer wall of two adjacent pipe piles. The corresponding sides of the support part and the base part are respectively connected to a plug part and a slot part. The slot part is provided with a through groove for axial insertion of the corresponding plug part. The bottom surface of the through groove is provided with a glue filling groove.

2. The pipe pile locking connection device according to claim 1, characterized in that: The plug portion is designed as a long column with a trapezoidal cross-section. The support portion is integrally connected to the center of the trapezoidal upper bottom surface of the plug portion. The cavity of the through groove is slidably adapted to the plug portion. The opening of the through groove is constricted and slidably adapted to the support portion.

3. The pipe pile locking connection device according to claim 1, characterized in that: The head end face of the plug is connected to a scraper with a corresponding through groove.

4. The pipe pile locking connection device according to claim 1, characterized in that: The base portion is provided with a grouting channel on the side corresponding to the connecting pipe pile.

5. The pipe pile locking connection device according to claim 4, characterized in that: The base portion has a flow guide block fixed to its tail end face for sealing the grouting channel, and the flow guide block has flow guide holes on both sides that connect to the grouting channel.

6. The pipe pile locking connection device according to claim 5, characterized in that: The flow guide hole is equipped with a one-way valve for outward flow.

7. The pipe pile locking connection device according to claim 5, characterized in that: The lower trapezoidal surface of the plug has a groove corresponding to the glue-filling groove.

8. The pipe pile locking connection device according to claim 7, characterized in that: The outer surface of the flow guide block near the slot is fixed with a cleaning column that corresponds to the axial groove.

9. The pipe pile locking connection device according to claim 8, characterized in that: The end face of the cleaning column corresponding to the groove is provided with a blind hole.

10. The pipe pile locking connection device according to claim 1, characterized in that: The axial surfaces of both the male and female fasteners are rounded, and a glue-filling gap is left between the slot and the through groove.

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