Core-pulling pipe plugging device for engineering pile

Abstract

The utility model discloses an engineering pile core-pulling pipe plugging device, it includes the plugging board and four arc connecting plates of being located the same side of plugging board in round, each arc connecting plate is located on the same circumference, the center of circle of circumference is located the axial line of plugging board, four arc connecting plates two two opposite distribution, and all along the radial direction of plugging board sliding connection in plugging board. The present application can be installed on the corresponding core-pulling pipe, reduce the cost required in prior art preset plugging device.

Description

Technical Field

[0001] This application relates to the field of building engineering, and in particular to a core-pulling pipe sealing device for engineering piles. Background Technology

[0002] With the increasing demands for construction quality in the construction industry, the testing of engineering piles is also constantly being improved. Currently, the core-sampling method for testing pile quality has become an essential method for inspecting the construction quality of engineering piles. As testing requirements continue to rise, core-sampling testing of engineering piles has also given rise to two other testing items: pile quality testing and pile bottom sediment and bearing stratum testing. In the process of pile bottom sediment and bearing stratum testing, the core-sampling tube, as a simple and efficient positioning device, is being increasingly widely used.

[0003] In engineering projects, core-pulling tubes are almost always made of metal to meet the stress requirements of engineering piles. Detecting sediment and bearing strata at the bottom of engineering piles requires extending the core-pulling drill bit from the core-pulling tube to the bottom of the pile, penetrating the bottom of the tube before core-pulling operations. During this process, because the core-pulling tube is made of metal, the core-pulling drill bit suffers significant wear and tear while penetrating the bottom of the tube, leading to increased testing costs.

[0004] Chinese utility model patent with publication number CN220394499U discloses a sealing device for a core-pulling pipe of an engineering pile, including a circular plastic sealing plate and a circular plastic connecting ring. The plastic sealing plate and the plastic connecting ring are integrally injection molded. The plastic sealing plate is located at the bottom end of the plastic connecting ring and the plastic sealing plate and the plastic connecting ring are coaxial. The plastic connecting ring is glued to the bottom of the core-pulling pipe of the engineering pile with construction adhesive, and the plastic sealing plate is plugged at the bottom end of the core-pulling pipe of the engineering pile.

[0005] The above solution involves bonding a plastic connecting ring to the bottom of the core-pulling tube of the engineering pile, allowing the plastic sealing plate to block the bottom end of the tube. During core-pulling operations, the core-pulling drill bit directly drills through the sealing plate, reducing drill bit wear and preventing jamming. However, since the plastic connecting ring and sealing plate are injection molded as a single unit, a connecting ring of appropriate size must be pre-made according to the size of the core-pulling tube, increasing costs. Utility Model Content

[0006] This application provides a sealing device for core-pulling pipes of engineering piles, which can be adapted and installed on the corresponding core-pulling pipes, reducing the cost required for pre-installed sealing devices in the prior art.

[0007] This application provides a device for sealing the core extraction tube of an engineering pile, which adopts the following technical solution:

[0008] A core-pulling pipe sealing device for engineering piles includes a circular sealing plate and four arc-shaped connecting plates located on the same side of the sealing plate. Each arc-shaped connecting plate is located on the same circumference, and the center of the circumference is located on the axis of the sealing plate. The four arc-shaped connecting plates are distributed opposite each other in pairs and are all slidably connected to the sealing plate along the radial direction of the sealing plate.

[0009] Optionally, two grooves are provided on one side of the sealing plate, and the ends of each arc-shaped connecting plate are adapted to and slidably connected to the corresponding groove.

[0010] Optionally, each of the grooves is a stepped groove or a dovetail groove.

[0011] Optionally, each of the grooves extends radially through the sealing plate.

[0012] Optionally, the sealing plate is fixedly connected to a central block located in the slide groove. Both slide grooves are provided with bidirectional screws. The two bidirectional screws are located on different planes. The middle ends of the two bidirectional screws are rotatably connected to the central block. Both ends of the two bidirectional screws are provided with threads with opposite directions, and the ends are threaded to the corresponding arc-shaped connecting plate.

[0013] Optionally, the central block has two central holes through it, the diameter of the middle part of the two central holes is larger than the diameter of the two ends, and the middle ends of the two bidirectional screws are fixedly connected to a central ring, and the two central rings are respectively adapted to and rotatably connected to the two central holes.

[0014] Optionally, each of the arc-shaped connecting plates is provided with a threaded hole, and the ends of the two bidirectional screws are threadedly connected to the corresponding threaded holes.

[0015] Optionally, at least one end of each of the bidirectional screws is provided with a hexagonal hole for inserting an external angle wrench.

[0016] Optionally, each of the arc-shaped connecting plates has multiple inner grooves on its inner side.

[0017] Optionally, each of the arc-shaped connecting plates has multiple external grooves on its outer side.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] 1. The core-pulling pipe sealing device of this application can adjust the diameter of the circumference formed by each arc-shaped connecting plate relative to the sealing plate by sliding the arc-shaped connecting plate according to the inner diameter of the core-pulling pipe. It can be adapted and installed on the corresponding core-pulling pipe, reducing the cost required for pre-installed sealing devices in the prior art, and eliminating the need for specially configured suitable sealing devices.

[0020] 2. The core extraction pipe sealing device for engineering piles in this application is safe and stable, simple to construct and highly efficient to install. At the same time, it can effectively solve the problem of metal pipe getting stuck at the bottom during core sampling, which greatly improves the detection efficiency and reduces the detection cost. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the core-pulling pipe sealing device for engineering piles according to this utility model.

[0022] Figure 2 This is the utility model Figure 1 Enlarged view of part A in the middle.

[0023] Figure 3 This is a cross-sectional view of the core-pulling pipe sealing device for engineering piles according to this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Sealing plate; 11. Slide groove; 2. Arc-shaped connecting plate; 21. Threaded hole; 22. Inner groove; 23. Outer groove; 3. Center block; 31. Center hole; 4. Bidirectional screw; 41. Center ring; 42. Hexagonal hole. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0026] This application discloses a core-pulling pipe sealing device for engineering piles.

[0027] Reference Figure 1 and Figure 2 A core-pulling pipe sealing device for engineering piles includes a circular sealing plate 1 and four arc-shaped connecting plates 2 located on the same side of the sealing plate 1. Each arc-shaped connecting plate 2 is located on the same circumference, and the center of the circumference is located on the axis of the sealing plate 1. The four arc-shaped connecting plates 2 are distributed opposite each other in pairs and are all slidably connected to the sealing plate 1 along the radial direction of the sealing plate 1.

[0028] During installation, the diameter of the circumference formed by each arc-shaped connecting plate 2 can be adjusted by sliding each arc-shaped connecting plate 2 relative to the sealing plate 1 according to the inner diameter of the core-pulling tube. This allows for fitting and installation on the corresponding core-pulling tube, reducing the cost of pre-installed sealing devices in the prior art and eliminating the need for specially configured suitable sealing devices.

[0029] Specifically, when the outer diameter of the core-pulling tube is equal to the diameter of the sealing plate 1, each arc-shaped connecting plate 2 can be moved inward simultaneously, reducing the diameter of the circumference formed by the straight lines of each arc-shaped connecting plate 2. Then, engineering adhesive is applied to the outer side of each arc-shaped connecting plate 2 and the inner wall of the bottom of the core-pulling tube, and each arc-shaped connecting plate 2 is inserted into the bottom of the core-pulling tube simultaneously. After the adhesion is firm, the core-pulling tube can be stably sealed by the sealing plate 1. When the outer diameter of the core-pulling tube is smaller than the diameter of the sealing plate 1, especially when the diameter difference is approximately equal to the thickness of the arc-shaped connecting plate 2... When in use, each arc-shaped connecting plate 2 can be moved outward simultaneously, increasing the diameter of the circumference formed by the arc-shaped connecting plates 2. The diameter of the circumference formed is approximately equal to that of the sealing plate 1. Then, engineering adhesive is applied to the inner side of each arc-shaped connecting plate 2 and the outer wall of the bottom of the core-pulling tube. The bottom of the core-pulling tube is then inserted into the circumference formed by each arc-shaped connecting plate 2. After the adhesion is firm, the core-pulling tube can be stably sealed by the sealing plate 1. In use, the arc-shaped connecting plates 2 can provide at least two points of support for the core-pulling tube, ensuring the connection strength.

[0030] Both the sealing plate 1 and the arc-shaped connecting plate 2 can be made of non-metallic materials, such as rubber and silicone, while meeting the requirements for both strength and brittleness.

[0031] The construction method of this device is simple. Before installing the core-pulling pipe in the engineering pile reinforcement cage, apply engineering adhesive to the connection position between each arc-shaped connecting plate 2 of the sealing device and the core-pulling pipe. Then, install the device at the bottom opening of the core-pulling pipe according to the specific form. After the connection is firm, fix the core-pulling pipe with the sealing device inside the engineering pile reinforcement cage and hoist it at the same time as the reinforcement cage.

[0032] Reference Figure 1 and Figure 2 Two grooves 11 are provided on one side of the sealing plate 1, and the ends of each arc-shaped connecting plate 2 are adapted to and slidably connected to the corresponding grooves 11.

[0033] By setting the slide groove 11, the diameter of the circumference formed by the four arc-shaped connecting plates 2 can be adjusted by sliding within the corresponding slide groove 11, thereby achieving the adaptation of the core-pulling tube.

[0034] Each groove 11 is a stepped groove or a dovetail groove. The figure shows a stepped groove. This is to prevent the arc-shaped connecting plates 2 from detaching from the sealing plate 1 along the axial direction of the sealing plate 1, so as to ensure the stability of the connection between the two, and thus ensure the stability of the sealing device's sealing of the core-pulling tube.

[0035] Each groove 11 extends radially through the sealing plate 1. This allows for the connection and installation of each arc-shaped connecting plate 2 and the sealing plate 1 by inserting each arc-shaped connecting plate 2 into the groove 11 radially from the sealing plate 1.

[0036] Reference Figure 1 and Figure 3The sealing plate 1 is fixedly connected to a central block 3 located in two sliding grooves 11. Both sliding grooves 11 are provided with bidirectional screws 4. The two bidirectional screws 4 are located on different planes. The middle ends of the two bidirectional screws 4 are rotatably connected to the central block 3. Both ends of the two bidirectional screws 4 are provided with threads with opposite directions, and the ends are threaded to the corresponding arc-shaped connecting plate 2.

[0037] When adjusting the diameter of the circumference formed by each arc-shaped connecting plate 2 according to the inner diameter of the core-pulling tube, the two opposing arc-shaped connecting plates 2 can be moved in opposite directions by rotating the two bidirectional screws 4, thus completing the rapid adjustment. At the same time, the two bidirectional screws 4 can strengthen the sealing plate 1 and improve the structural strength of the sealing plate 1.

[0038] Both bidirectional screws 4 can be made of non-metallic materials, such as rubber or silicone, to meet both strength and brittleness requirements.

[0039] The central block 3 has two central holes 31 through it. The diameter of the middle end of the two central holes 31 is larger than the diameter of the two ends. The middle ends of the two bidirectional screws 4 are fixedly connected to central rings 41. The two central rings 41 are respectively adapted to and rotatably connected to the two central holes 31.

[0040] The bidirectional screw 4 is rotatably connected to the corresponding center hole 31 by setting the center ring 41 to ensure stable rotational installation.

[0041] Each arc-shaped connecting plate 2 has a through threaded hole 21, and the ends of the two bidirectional screws 4 are threaded to the corresponding threaded holes 21. The threaded connection between the bidirectional screws 4 and the arc-shaped connecting plate 2 is achieved through the threaded holes 21.

[0042] Each bidirectional screw 4 has a hexagonal hole 42 at at least one end for inserting an outside wrench. The bidirectional screw 4 is rotated by inserting an outside wrench into the hexagonal hole 42.

[0043] Reference Figure 1 and Figure 2 Each arc-shaped connecting plate 2 has multiple inner grooves 22 on its inner side. During installation, engineering adhesive enters the inner grooves 22, which increases the connection strength between the arc-shaped connecting plate 2 and the outer wall of the core-pulling tube. Each arc-shaped connecting plate 2 has multiple outer grooves 23 on its outer side. During installation, engineering adhesive enters the outer grooves 23, which increases the connection strength between the arc-shaped connecting plate 2 and the inner wall of the core-pulling tube.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealing device for core-pulling pipes in engineering piles, characterized in that: It includes a circular sealing plate (1) and four arc-shaped connecting plates (2) located on the same side of the sealing plate (1). Each arc-shaped connecting plate (2) is located on the same circumference, and the center of the circumference is located on the axis of the sealing plate (1). The four arc-shaped connecting plates (2) are distributed in pairs opposite each other and are all slidably connected to the sealing plate (1) in the radial direction.

2. The sealing device for core extraction pipes of engineering piles according to claim 1, characterized in that: Two grooves (11) are provided on one side of the sealing plate (1), and the ends of each arc-shaped connecting plate (2) are adapted to and slidably connected to the corresponding groove (11).

3. The sealing device for core extraction pipes of engineering piles according to claim 2, characterized in that: Each of the aforementioned grooves (11) is a stepped groove or a dovetail groove.

4. The sealing device for core extraction pipes of engineering piles according to claim 2, characterized in that: Each of the grooves (11) passes through the sealing plate (1) in the radial direction.

5. The sealing device for the core extraction pipe of the engineering pile according to claim 2, characterized in that: The sealing plate (1) is fixedly connected to a center block (3) located in the slide groove (11). Both slide grooves (11) are provided with bidirectional screws (4). The two bidirectional screws (4) are located on different planes. The middle ends of the two bidirectional screws (4) are rotatably connected to the center block (3). Both ends of the two bidirectional screws (4) are provided with threads with opposite directions, and the ends are threaded to the corresponding arc-shaped connecting plate (2).

6. The sealing device for the core extraction pipe of the engineering pile according to claim 5, characterized in that: The central block (3) has two central holes (31) through it. The diameter of the middle end of the two central holes (31) is larger than the diameter of the two ends. The middle ends of the two bidirectional screws (4) are fixedly connected to a central ring (41). The two central rings (41) are respectively adapted to and rotatably connected to the two central holes (31).

7. The sealing device for core extraction pipes of engineering piles according to claim 5, characterized in that: Each of the arc-shaped connecting plates (2) has a through threaded hole (21), and the ends of the two bidirectional screws (4) are threaded to the corresponding threaded holes (21).

8. The sealing device for the core extraction pipe of the engineering pile according to claim 5, characterized in that: At least one end of each of the bidirectional screws (4) is provided with a hexagonal hole (42), which is used for inserting an outer angle wrench.

9. The sealing device for the core extraction tube of an engineering pile according to any one of claims 1-8, characterized in that: Each of the arc-shaped connecting plates (2) has multiple inner grooves (22) on its inner side.

10. The sealing device for the core extraction pipe of an engineering pile according to any one of claims 1-8, characterized in that: Each of the arc-shaped connecting plates (2) has multiple external grooves (23) on its outer side.

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