Leak-proof prefabricated pipe pile plugging device for high backfill area

Abstract

The utility model relates to the technical field of tubular piles, and discloses a leakproof high backfill area prefabricated tubular pile plugging device which comprises an equipment plate and a prefabricated tubular pile outer pipe, the upper end face of the left side of the equipment plate is fixedly connected with a transmission motor, and the output end of the right side of the transmission motor is fixedly connected with a continuously variable transmission. The output end of the right side of the continuously variable transmission is fixedly connected with a reciprocating threaded rod; the lower end face of the continuously variable transmission is fixedly connected with the upper end face of the equipment plate. Through cooperative work of a plugging plate, a pressurization bin, an air injection pipe, an inflation hose, a one-way air inlet valve, a one-way air outlet valve and a sealing cover, the stability and reliability of the plugging process are remarkably improved, the displacement or instability phenomenon of the plugging plate in the operation process is effectively prevented, and therefore the sealing performance and the leakage prevention capacity of the whole structure are enhanced; in addition, by means of the design, an operator can conveniently and rapidly inflate or exhaust the pressurizing bin, and the use efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipe pile technology, specifically a precast pipe pile sealing device for preventing leakage in high backfill areas. Background Technology

[0002] Precast pipe piles refer to tubular concrete piles prefabricated in a factory or on-site, specifically designed for building engineering. They typically require sealing devices to close the ends, aiming to ensure the stability and safety of the pipe piles while effectively preventing soil seepage. However, existing sealing devices for precast pipe piles still have certain shortcomings, such as:

[0003] Application CN202320756916.4, entitled "A Steel Support Sealing Device for Top Hole of Precast Pipe Pile," includes a casing body. The casing body includes a bottom support steel plate, multiple suspension support shafts, and multiple suspension support shaft arms. The multiple suspension support shafts are evenly distributed along the circumference of the bottom support steel plate. The lower end of each suspension support shaft is fixedly connected to an eccentric position on the bottom support steel plate, and the upper end of each suspension support shaft extends obliquely upward. Each suspension support shaft arm is fixedly connected to the upper end of the suspension support shaft in a corresponding manner, and the suspension support shaft arms extend horizontally outward. This device relies solely on gravity for sealing, which may not completely seal the pipe pile, resulting in incomplete sealing and potential safety hazards. Therefore, a precast pipe pile sealing device for high backfill areas with leakage prevention is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a precast pipe pile sealing device for high backfill areas to prevent leakage, so as to solve the problem mentioned in the background art that the existing precast pipe pile sealing devices rely solely on gravity for sealing, which may not be able to completely seal the pipe pile, resulting in incomplete sealing and leaving safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes an equipment plate and a precast pipe pile outer tube. A drive motor is fixedly connected to the upper left side of the equipment plate, and a continuously variable transmission (CVT) is fixedly connected to the right output end of the drive motor. A reciprocating threaded rod is fixedly connected to the right output end of the CVT. The lower end of the CVT is fixedly connected to the upper end of the equipment plate, and a pressure chamber is fixedly connected to the upper right side of the equipment plate. The right end of the reciprocating threaded rod is connected to a bearing on the inner wall of the pressure chamber, and a piston plate is threaded onto the reciprocating threaded rod. The outer end of the piston plate is slidably connected to the inner wall of the pressure chamber. An injection plate is fixedly connected to the inner wall of the precast pipe pile outer tube, and an inner precast pipe pile tube is fixedly connected to the inner wall of the injection plate.

[0006] The above technical solution facilitates the stability of the overall structure.

[0007] As a preferred embodiment of this utility model, the inner wall of the precast pipe pile is provided with internal threads, and the inner pipe of the precast pipe pile is connected to an air injection plate through the internal threads.

[0008] By adopting the above technical solution, it is easy to increase the air pressure inside the precast pipe pile, making the seal between the inner pipe and the outer pipe of the precast pipe pile tighter, effectively preventing leakage problems, and improving the sealing and stability of the overall structure.

[0009] As a preferred embodiment of this utility model, an injection groove is provided inside the injection plate, and an injection pipe is fixedly connected to the upper surface of the injection plate; the inner wall of the injection pipe is provided with internal threads.

[0010] The above technical solution facilitates further increasing the air pressure inside the precast pipe pile, thereby improving the sealing effect and the stability of the overall structure.

[0011] As a preferred embodiment of this invention, the upper surfaces of the gas injection plate and the injection plate are flush.

[0012] The above technical solution makes the overall structure more compact and reduces the risk of leakage caused by loose structure.

[0013] As a preferred embodiment of this utility model, a slide rail is fixedly connected to the inner wall of the precast pipe pile, and the slide rail is circumferentially arranged about the center of the inner pipe of the precast pipe pile; a sealing plate is slidably connected to the slide rail.

[0014] By adopting the above technical solution, the sealing plate can move smoothly along the inner wall of the precast pipe pile, ensuring the stability and reliability of the sealing process and further enhancing the overall structure's sealing and leak-proof capabilities.

[0015] As a preferred embodiment of this utility model, a base plate is installed on the lower end face of the precast pipe pile outer tube, and a sealing gasket that matches the inner wall surface of the precast pipe pile outer tube is fixedly connected to the upper end face of the base plate.

[0016] By adopting the above technical solution, it is easy to effectively prevent external moisture and gas from seeping into the interior of the precast pipe pile through the connection gap, further improving the leakage prevention capability of the entire sealing device.

[0017] As a preferred embodiment of this utility model, an inflation hose is fixedly connected to the upper right side of the pressurization chamber, and an external thread is provided on the outer end face of the end of the inflation hose; the inflation hose and the air injection pipe are threadedly connected; a one-way air inlet valve and a one-way air outlet valve are arranged sequentially from top to bottom on the right end face of the pressurization chamber, and a sealing cap is fixedly snapped onto the outer right end face of both the one-way air inlet valve and the one-way air outlet valve; a pressure gauge is provided on the body of the inflation hose.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: through the coordinated work of the sealing plate, pressurizing chamber, air injection pipe, air inflation hose, one-way air inlet valve, one-way air outlet valve and sealing cap, the stability and reliability of the sealing process are significantly improved, and the displacement or instability of the sealing plate during operation is effectively prevented, thereby enhancing the sealing performance and leakage prevention capability of the overall structure; in addition, this design facilitates the operator to quickly inflate or deflate the pressurizing chamber, improving the efficiency of the device.

[0019] When installing pipe piles, first clean the bottom surface of the placement pit, then place the base plate at the bottom of the placement pit, then engage the lower end of the precast pipe pile outer tube with the base plate, so that the sealing gasket on the base plate and the inner wall of the precast pipe pile outer tube are tightly fitted; then connect the tail end of the air inflator hose to the air injection pipe thread.

[0020] Remove the sealing cap on the right end of the one-way air intake valve, then start the drive motor. Under the speed regulation of the continuously variable transmission, the drive motor drives the reciprocating threaded rod to rotate. The reciprocating threaded rod drives the piston plate to move back and forth in the pressurization chamber, continuously injecting outside air into the inner tube of the precast pipe pile. Under the action of air pressure and gravity, the sealing plate is tightly attached to the upper surface of the bottom plate along the slide rail, so that the outer tube of the precast pipe pile and the inner tube of the precast pipe pile form two independent spaces. Observe the air pressure gauge at all times to ensure that the air pressure in the inner tube of the precast pipe pile is at the preset value.

[0021] Then, concrete is poured into the space between the outer and inner pipes of the precast pile through the injection plate. After the concrete cools and sets, the one-way air inlet valve is sealed with a sealing cap, and the sealing cap of the one-way air outlet valve is removed. The drive motor is then started again to quickly extract the air from the inner pipe of the precast pile until the air pressure inside the pipe returns to normal. The air injection plate is then removed, and concrete is poured into the inner pipe of the precast pile until the concrete is level with the top surface of the inner pipe of the outer pipe of the precast pile. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0023] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0024] Figure 3 This utility model Figure 1 Enlarged structural diagram at point B;

[0025] Figure 4 This utility model Figure 1 Enlarged structural diagram at point C;

[0026] Figure 5 This is a schematic diagram of the connection structure between the drive motor and the continuously variable transmission of this utility model.

[0027] In the diagram: 1. Equipment plate; 2. Drive motor; 3. Continuously variable transmission; 4. Reciprocating threaded rod; 5. Pressure chamber; 6. Piston plate; 7. Injection plate; 8. Inner pipe of precast pile; 9. Air injection plate; 10. Air injection pipe; 11. Slide rail; 12. Sealing plate; 13. Base plate; 14. Sealing gasket; 15. Inflation hose; 16. One-way air inlet valve; 17. One-way air outlet valve; 18. Pressure gauge; 19. Outer pipe of precast pile. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-5 The present invention provides a leak-proof precast pipe pile sealing device for high backfill areas, comprising an equipment plate 1 and a precast pipe pile outer pipe 19. A drive motor 2 is fixedly connected to the upper left side of the equipment plate 1, and a continuously variable transmission (CVT) 3 is fixedly connected to the output end of the drive motor 2 on the right side. A reciprocating threaded rod 4 is fixedly connected to the output end of the CVT 3 on the right side. The lower end of the CVT 3 is fixedly connected to the upper end of the equipment plate 1, and a pressure chamber 5 is fixedly connected to the upper right side of the equipment plate 1. The right end of the reciprocating threaded rod 4 is connected to a bearing on the inner wall of the pressure chamber 5 on the right side, and a piston plate 6 is threaded onto the reciprocating threaded rod 4. The outer end of the piston plate 6 is slidably connected to the inner wall of the pressure chamber 5. An injection plate 7 is fixedly connected to the inner wall of the precast pipe pile outer pipe 19, and an inner pipe 8 of the precast pipe pile is fixedly connected to the inner wall of the injection plate 7, which facilitates the stability of the overall structure.

[0030] The inner wall of the precast pipe pile inner tube 8 is provided with internal threads, and the precast pipe pile inner tube 8 is connected to an air injection plate 9 through the internal threads, which facilitates the increase of air pressure in the precast pipe pile inner tube 8, making the seal between the precast pipe pile inner tube 8 and the precast pipe pile outer tube 19 tighter, effectively preventing leakage problems, and improving the sealing and stability of the overall structure.

[0031] An air injection groove is provided inside the air injection plate 9, and an air injection pipe 10 is fixedly connected to the upper end face of the air injection plate 9; the inner wall of the air injection pipe 10 is provided with internal threads, which facilitates further increasing the air pressure inside the precast pipe pile inner pipe 8, improving the sealing effect and the stability of the overall structure.

[0032] The upper surfaces of the gas injection plate 9 and the injection plate 7 are flush, making the overall structure more compact and reducing the risk of leakage due to loose structure.

[0033] A slide rail 11 is fixedly connected to the inner wall of the precast pipe pile, and the slide rail 11 is circumferentially arranged about the center of the inner pipe 8 of the precast pipe pile; a sealing plate 12 is slidably connected to the slide rail 11, which facilitates the smooth movement of the sealing plate 12 along the inner wall of the inner pipe 8 of the precast pipe pile, ensuring the stability and reliability of the sealing process, and further enhancing the sealing and leakage prevention capabilities of the overall structure.

[0034] A base plate 13 is installed on the lower end face of the precast pipe pile outer pipe 19, and a sealing gasket 14 that matches the inner wall surface of the precast pipe pile outer pipe 19 is fixedly connected to the upper end face of the base plate 13, which can effectively prevent external moisture and gas from seeping into the interior of the precast pipe pile through the connection gap, and further improve the leakage prevention capability of the entire sealing device.

[0035] An inflation hose 15 is fixedly connected to the upper right side of the pressurization chamber 5, and the outer end face of the inflation hose 15 is provided with an external thread; the inflation hose 15 and the air injection pipe 10 are threaded together; from top to bottom, a one-way air inlet valve 16 and a one-way air outlet valve 17 are arranged on the right side of the pressurization chamber 5, and a sealing cap is fixedly snapped onto the outer right side face of both the one-way air inlet valve 16 and the one-way air outlet valve 17; a pressure gauge 18 is installed on the body of the inflation hose 15.

[0036] Working principle: When installing pipe piles, first clean the bottom surface of the placement pit, then place the base plate 13 at the bottom of the placement pit, then engage the lower end of the precast pipe pile outer tube 19 with the base plate 13, so that the sealing gasket 14 on the base plate 13 and the inner wall of the precast pipe pile outer tube 19 are tightly fitted; then connect the tail end of the air inflator hose 15 to the air injection pipe 10 by thread.

[0037] Remove the sealing cap on the right end of the one-way air intake valve 16, then start the drive motor 2. Under the speed regulation of the continuously variable transmission 3, the drive motor 2 drives the reciprocating threaded rod 4 to rotate. The reciprocating threaded rod 4 drives the piston plate 6 to move back and forth in the pressurization chamber 5, continuously injecting outside air into the inner tube 8 of the precast pipe pile. Under the action of air pressure and gravity, the sealing plate 12 is tightly attached to the upper surface of the bottom plate 13 along the slide rail 11, so that the outer tube 19 of the precast pipe pile and the inner tube 8 of the precast pipe pile form two independent spaces. The air pressure gauge 18 is constantly observed to ensure that the air pressure in the inner tube 8 of the precast pipe pile is at the preset value.

[0038] Then, concrete is poured into the space between the precast outer pipe 19 and the precast inner pipe 8 through the injection plate 7. After the concrete cools and sets, the one-way air inlet valve 16 is sealed with a sealing cap, and the sealing cap of the one-way air outlet valve 17 is removed. The drive motor 2 is started again to quickly extract the air from the precast inner pipe 8 until the air pressure in the pipe returns to normal. The air injection plate 9 is then removed, and concrete is poured into the precast inner pipe 8 until the concrete is level with the top surface of the precast outer pipe 19.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof precast pipe pile sealing device for high backfill areas, comprising an equipment plate (1) and a precast pipe pile outer pipe (19), characterized in that: A drive motor (2) is fixedly connected to the upper left side of the equipment plate (1), and a continuously variable transmission (CVT) (3) is fixedly connected to the output end of the drive motor (2) on the right side, and a reciprocating threaded rod (4) is fixedly connected to the output end of the CVT (3) on the right side; the lower end of the CVT (3) is fixedly connected to the upper end of the equipment plate (1), and a pressure chamber (5) is fixedly connected to the upper right side of the equipment plate (1); the right end of the reciprocating threaded rod (4) is connected to the bearing on the inner wall of the pressure chamber (5), and a piston plate (6) is threaded onto the reciprocating threaded rod (4); the outer end of the piston plate (6) is slidably connected to the inner wall of the pressure chamber (5); an injection plate (7) is fixedly connected to the inner wall of the precast pipe pile outer tube (19), and a precast pipe pile inner tube (8) is fixedly connected to the inner wall of the injection plate (7).

2. The precast pipe pile sealing device for preventing leakage in high backfill areas according to claim 1, characterized in that: The inner wall of the precast pipe pile inner tube (8) is provided with internal threads, and the precast pipe pile inner tube (8) is connected to an air injection plate (9) through the internal threads.

3. A precast pipe pile sealing device for leak-proof high backfill areas according to claim 2, characterized in that: An air injection groove is provided inside the air injection plate (9), and an air injection pipe (10) is fixedly connected to the upper end face of the air injection plate (9); the inner wall of the air injection pipe (10) is provided with an internal thread.

4. A precast pipe pile sealing device for leak-proof high backfill areas according to claim 3, characterized in that: The upper surfaces of the gas injection plate (9) and the injection plate (7) are flush.

5. A precast pipe pile sealing device for leak-proof high backfill areas according to claim 4, characterized in that: The inner wall of the precast pipe pile is fixedly connected to a slide rail (11), and the slide rail (11) is circumferentially arranged about the center of the inner pipe (8) of the precast pipe pile; a sealing plate (12) is slidably connected on the slide rail (11).

6. A precast pipe pile sealing device for preventing leakage in high backfill areas according to claim 5, characterized in that: The lower end face of the precast pipe pile outer tube (19) is fitted with a base plate (13), and the upper end face of the base plate (13) is fixedly connected with a sealing gasket (14) that matches the inner wall surface of the precast pipe pile outer tube (19).

7. A precast pipe pile sealing device for leak-proof high backfill areas according to claim 6, characterized in that: An inflation hose (15) is fixedly connected to the upper right side of the pressurization chamber (5), and an external thread is provided on the outer end face of the end of the inflation hose (15); the inflation hose (15) and the air injection pipe (10) are threadedly connected; a one-way air inlet valve (16) and a one-way air outlet valve (17) are arranged sequentially from top to bottom on the right end face of the pressurization chamber (5), and a sealing cap is fixedly snapped onto the outer right end face of both the one-way air inlet valve (16) and the one-way air outlet valve (17); a pressure gauge (18) is provided on the body of the inflation hose (15).

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