Rapid pressure relief device used after secondary hole cleaning of positive circulation guide pipe for drilled pile

Abstract

The utility model relates to the technical field of building construction, in particular to a quick pressure relief device for a drilled pile after secondary hole cleaning of a positive circulation guide pipe, which comprises a pressure relief ball, a connecting pipe and a fan-shaped part, the plurality of connecting pipes are directly or indirectly hinged in the circumferential direction of the pressure relief ball; the fan-shaped part is arranged in a fan-shaped space between the connecting pipes; and the two side edges of the fan-shaped part are fixedly connected with the connecting pipe. A rolling ball is arranged at the end, away from the pressure relief ball, of the connecting pipe. The rolling balls abut against the inner wall of the pile hole. The device further comprises a hoisting mechanism. The hoisting mechanism is arranged above the guide pipe; a connecting arm is arranged below the hoisting mechanism and hinged to the connecting pipe. When the device is not used, the device can be folded like an umbrella, namely the waterproof cloth is folded. When in use, the device is hoisted into the guide pipe through the electric winch at the orifice position.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a rapid pressure relief device for secondary hole cleaning of bored piles using a positive circulation guide pipe. Background Technology

[0002] The application of mud-walled bored piles is becoming increasingly widespread. However, for some pile foundation projects with specific requirements, to ensure zero sediment at the pile bottom, the conventional practice is to use a secondary cleaning method to remove sediment from the bottom of the hole. Common secondary cleaning methods primarily involve positive circulation of mud through a guide pipe, which meets the cleaning requirements. However, prolonged positive circulation through the guide pipe can lead to high water pressure inside the pipe. If the water pressure inside the guide pipe is not fully released after the positive circulation cleaning is completed, the initial concrete pouring cannot be carried out in a timely manner, resulting in failed bottom sealing and a quality accident leading to pile breakage. A common method for releasing pressure through the guide pipe is to lift and disassemble it partially, then reconnect it after the pressure is released, which is time-consuming and labor-intensive. Utility Model Content

[0003] The purpose of this application is to provide a rapid pressure relief device for secondary cleaning of bored piles using a positive circulation guide pipe, so as to solve at least one of the technical problems existing in the prior art.

[0004] To solve the above-mentioned technical problems, this application provides a rapid pressure relief device after secondary hole cleaning for a positive circulation guide pipe for bored piles, including a pressure relief ball, a connecting pipe and a sector-shaped part;

[0005] The pressure relief ball is directly or indirectly hinged to multiple connecting pipes in the circumferential direction;

[0006] The sector portion is provided within the sector-shaped space between the connecting pipes;

[0007] The two sides of the fan-shaped portion are fixedly connected to the connecting pipe.

[0008] Furthermore, a rolling ball is provided at the end of the connecting pipe away from the pressure relief ball;

[0009] The rolling ball abuts against the inner wall of the pile hole.

[0010] Furthermore, it also includes the hoisting mechanism;

[0011] The hoisting mechanism is positioned above the guide tube;

[0012] A connecting arm is provided below the hoisting mechanism, and the connecting arm is hinged to the connecting pipe.

[0013] Furthermore, it also includes a weight hammer;

[0014] The weight is suspended below the pressure relief ball to provide a vertical downward force and prevent the pressure relief ball from shifting its position during its up-and-down movement.

[0015] Furthermore, it also includes anti-falling steel bars;

[0016] The anti-fall reinforcement is welded to the bottom of the conduit to prevent the connecting pipe from falling completely out of the conduit.

[0017] Furthermore, it also includes pressure sensors;

[0018] The pressure sensor is installed inside the pressure relief ball and is wirelessly connected to an external display to measure the pressure of the mud inside the conduit.

[0019] Furthermore, it also includes pressure sensing wires;

[0020] The pressure sensing line is laid on the sector and is wired to an external display via a signal line, which passes through the connecting tube.

[0021] Furthermore, it also includes a speed sensor;

[0022] The speed sensor is installed inside the weight hammer and is wirelessly connected to an external display to measure the lifting and lowering speed of the pressure relief ball.

[0023] Furthermore, a cross-shaped metal ring is provided on the pressure relief ball;

[0024] The cross-shaped metal ring is connected to the pressure relief ball via a metal rod or a positioning spring, and the connecting pipe is hinged to the cross-shaped metal ring.

[0025] Furthermore, the hoisting mechanism includes a frame, a motor, a drum, and a winding cable;

[0026] The frame is positioned above the pile hole;

[0027] The motor and drum are mounted on the top of the frame;

[0028] The motor is connected to the drum drive;

[0029] The winding thread is wound on the spool, and the extended end of the winding thread is connected to the connecting arm.

[0030] By adopting the above technical solution, this application has the following beneficial effects:

[0031] (1) When not in use, the device can be folded up like an umbrella, i.e., the waterproof cloth is folded up. When in use, it is hoisted into the conduit through the electric winch at the orifice. The device is slid to the bottom of the conduit by the rolling balls at the four corners of the device, which are attached to the inner wall of the conduit and the weight hammer below them. The device is then locked onto the anti-falling steel bars welded to the inner wall of the conduit.

[0032] (2) The pressure relief metal ball of the device can be equipped with a pressure sensor, and the pressure value can be read through the ground display to determine whether the pressure relief is completed.

[0033] (3) The waterproof cloth of the device can be arranged in a ring with pressure sensing lines, and connected to the ground through the connecting pipes between the waterproof cloths. The pressure value can be read through the display, and the corresponding water pressure data can also be transmitted to the ground. By measuring the water pressure value, it can be determined whether the pressure relief in the conduit has been completed. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the planar structure for hoisting the speed sensor onto the pressure relief ball;

[0036] Figure 2 A schematic diagram of a planar structure in which a pressure sensor is installed in a pressure relief bulb;

[0037] Figure 3 A schematic diagram of a planar structure with pressure sensing lines set on the sector-shaped part;

[0038] Figure 4 This is a schematic diagram of the unfolded planar structure of the pressure relief ball, connecting pipe, and sector section.

[0039] Figure 5 A schematic diagram of the planar structure of the pressure relief device in its initial state before operation;

[0040] Figure 6 A schematic diagram of the planar structure to reach the maximum depth when the pressure relief device is in operation;

[0041] Figure 7 A schematic diagram of the planar structure of the pressure relief device when it is raised during operation;

[0042] Figure 8 This is a schematic diagram of the planar structure when the pressure relief is complete.

[0043] Figure label:

[0044] 1-Pressure relief ball; 2-Connecting pipe; 3-Fan-shaped part; 4-Metal rod; 5-Rolling ball; 6-Winding mechanism; 7-Connecting arm; 8-Weight hammer; 9-Anti-falling steel bar; 10-Pressure sensor; 11-Pressure sensing line; 12-Signal line; 13-Speed ​​sensor; 14-Cross metal ring; 15-Frame; 16-Motor; 17-Drum; 18-Wire winding; 19-Conduit; 20-Pile hole; 21-Display; 22-Positioning spring. Detailed Implementation

[0045] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not 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 application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection 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 application based on the specific circumstances.

[0048] It should also be noted that the specific embodiments or implementation methods described below are a series of optimized settings listed in this application to further explain the specific application content, and these settings can be combined or used in conjunction with each other.

[0049] The present application will be further explained below with reference to specific implementation methods.

[0050] like Figure 1-5 As shown in the figure, this embodiment provides a rapid pressure relief device after secondary hole cleaning for a positive circulation guide pipe for bored piles, which includes a pressure relief ball 1, a connecting pipe 2, and a sector-shaped part 3;

[0051] The pressure relief ball 1 is directly or indirectly hinged to multiple connecting pipes 2 in the upward direction;

[0052] The sector portion 3 is provided within the sector-shaped space between the connecting pipes 2;

[0053] The two sides of the fan-shaped part 3 are fixedly connected to the connecting pipe 2.

[0054] like Figure 4-5 As shown, in a further embodiment of this application, a rolling ball 5 is provided at the end of the connecting pipe 2 away from the pressure relief ball 1;

[0055] The rolling ball 5 abuts against the inner wall of the pile hole 20.

[0056] As a further embodiment of this application, a hoist mechanism 6 is also included;

[0057] The winch 6 is positioned above the guide tube 19;

[0058] A connecting arm 7 is provided below the winch 6, and the connecting arm 7 is hinged to the connecting pipe 2.

[0059] like Figure 7 As shown, as a further embodiment of this application, a weight hammer 8 is also included;

[0060] The weight 8 hangs from the lower part of the pressure relief ball 1 to provide vertical downward gravity and prevent the pressure relief ball 1 from shifting its position during up and down movement.

[0061] like Figure 5-6 As shown, as a further embodiment of this application, it also includes anti-falling steel bars 9;

[0062] The anti-fall steel bar 9 is welded to the bottom of the conduit 19 to prevent the connecting pipe 2 from falling completely out of the conduit 19.

[0063] like Figure 2 As shown, as a further embodiment of this application, a pressure sensor 10 is also included;

[0064] The pressure sensor 10 is installed inside the pressure relief ball 1 and is wirelessly connected to the external display 21 to measure the pressure of the mud in the conduit 19.

[0065] like Figure 3 As shown, as a further embodiment of this application, a pressure sensing line 11 is also included;

[0066] The pressure sensing line 11 is laid on the sector 3 and is wired to the external display 21 via a signal line 12, which passes through the connecting pipe 2.

[0067] like Figure 1 As shown, as a further embodiment of this application, a speed sensor 13 is also included;

[0068] The speed sensor 13 is installed inside the weight hammer 8 and is wirelessly connected to the external display 21 to measure the lifting speed of the pressure relief ball 1.

[0069] like Figure 1-4 As shown, as a further embodiment of this application, the pressure relief ball 1 is provided with a cross-shaped metal ring 14;

[0070] The cross-shaped metal ring 14 is connected to the pressure relief ball 1 via a metal rod 4 or a positioning spring 22, and the connecting pipe 2 is hinged to the cross-shaped metal ring 14.

[0071] like Figure 5-6 As shown, as a further embodiment of this application, the winch mechanism 6 includes a frame 15, a motor 16, a drum 17, and a winding 18.

[0072] The frame 15 is positioned above the pile hole 20;

[0073] The motor 16 and the drum 17 are provided at the top of the frame 15;

[0074] The motor 16 is driven by the drum 17.

[0075] The winding 18 is wound on the spool 17, and the extended end of the winding 18 is connected to the connecting arm 7.

[0076] This application discloses a rapid pressure relief device for secondary cleaning of bored piles using a positive circulation guide pipe. During operation, the motor 16 drives the drum 17 to rotate, causing the winding cable 18 to descend, resulting in the pressure relief ball 1, connecting pipe 2, and sector-shaped section 3 falling into the guide pipe 19. During this descent, the rolling ball 5 contacts and moves in conjunction with the inner wall of the guide pipe 19, ensuring a smooth descent with low friction. The anti-falling steel reinforcement 9 inside the guide pipe 19 limits the descent height of the pressure relief ball 1, connecting pipe 2, and sector-shaped section 3, preventing the connecting pipe 2 from falling completely out of the guide pipe 19 and being unable to return, while also ensuring repeated pulling within the maximum stroke of the guide pipe 19. At this time, the sector-shaped section 3 is in an extended state and is rapidly lifted by the winch 6. The sector-shaped section 3 then acts as a piston within the guide pipe 19. Repeatedly, this allows mud to flow into the guide pipe 19, raising the liquid level and reducing the pressure within the guide pipe 19 (mud flow direction as shown). Figure 7 and Figure 8(As indicated by the middle arrow) When the mud levels inside and outside the conduit 19 are consistent, the pressure relief is complete. During the lifting and lowering process, the weight hammer 8 is suspended below the pressure relief ball 1, ensuring that the positions of the pressure relief ball 1, connecting pipe 2, and fan-shaped part 3 do not shift during the lifting and lowering process. In addition, the device disclosed in this application is also equipped with a pressure sensor, a pressure sensing line 11, and a speed sensor 13. The speed sensor 13 can measure the lifting and lowering speed of the pressure relief ball 1, thereby determining whether the water pressure inside the conduit 19 is consistent with the overall water pressure in the pile hole 20 by measuring the sinking speed of the pressure relief ball 1. When pressure relief is not complete, the sinking speed of the pressure relief ball 1 is slower, and vice versa. The pressure sensor 10 can directly measure the pressure value of the outgoing water to determine whether pressure relief is complete. The pressure sensing line 11 is another component to assist in verifying the pressure relief effect, also determining whether pressure relief is complete by measuring the water pressure value. One, two, or all three of the above sensing devices can be selectively installed.

[0077] In a preferred embodiment of this application, the fan-shaped portion 3 is preferably made of waterproof fabric, but rubber or other chemical materials may also be used. The connecting arm 7 is preferably a telescopic structure. The connecting tube 2 is preferably four in number.

[0078] By adopting the above technical solution, this application has the following beneficial effects:

[0079] (1) The designed rapid pressure relief device can quickly reduce the pressure inside the guide pipe 19 after the secondary cleaning of the borehole in the positive circulation guide pipe of the drilled pile, so that the mud can flow smoothly into the guide pipe 19, thereby accelerating the cleaning process and improving the construction efficiency.

[0080] (2) The design of the rolling ball 5 in the device reduces the friction with the inner wall of the conduit 19, making the falling process more stable; at the same time, the use of the weight hammer 8 avoids the position displacement of the pressure relief ball 1 during the lifting process, ensuring the stability and safety of the operation.

[0081] (3) The anti-falling steel bar 9 effectively limits the falling height of the pressure relief ball 1, the connecting pipe 2 and the fan-shaped part 3, preventing them from falling out of the conduit 19 and being unable to rise back up. At the same time, it ensures that the device can be repeatedly pulled within the maximum stroke of the conduit 19.

[0082] (4) By using the pressure sensor 10, pressure sensing line 11 and speed sensor 13 together, the pressure changes inside and outside the conduit 19 and the lifting speed of the pressure relief ball 1 can be monitored in real time, so as to accurately judge the pressure relief effect and ensure the accuracy and reliability of the hole cleaning work.

[0083] (5) The sector part 3 is made of waterproof cloth, rubber or other chemical materials, which can be selected according to the actual construction environment and needs, thus enhancing the adaptability and flexibility of the device.

[0084] (6) The whole device has a compact structure and reasonable design, making it easy to install, operate and maintain; at the same time, the hoist mechanism makes the lifting operation of the device simpler and faster.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A rapid pressure relief device after secondary hole cleaning using a positive circulation guide pipe for bored piles, characterized in that, Includes a pressure relief ball, connecting pipe, and sector section; The pressure relief ball is directly or indirectly hinged with multiple connecting pipes in the circumferential direction; The sector portion is provided within the sector-shaped space between the connecting pipes; The two sides of the fan-shaped portion are fixedly connected to the connecting pipe.

2. The pressure relief device according to claim 1, characterized in that, A rolling ball is provided at the end of the connecting pipe away from the pressure relief ball; The rolling ball abuts against the inner wall of the pile hole.

3. The pressure relief device according to claim 1, characterized in that, It also includes the hoisting mechanism; The hoisting mechanism is positioned above the guide tube; A connecting arm is provided below the hoisting mechanism, and the connecting arm is hinged to the connecting pipe.

4. The pressure relief device according to claim 1, characterized in that, It also includes a weight hammer; The weight is suspended below the pressure relief ball to provide a vertical downward force and prevent the pressure relief ball from shifting its position during its up-and-down movement.

5. The pressure relief device according to claim 1, characterized in that, It also includes anti-fall steel bars; The anti-fall reinforcement is welded to the bottom of the conduit to prevent the connecting pipe from falling completely out of the conduit.

6. The pressure relief device according to claim 1, characterized in that, It also includes pressure sensors; The pressure sensor is installed inside the pressure relief ball and is wirelessly connected to an external display to measure the pressure of the mud inside the conduit.

7. The pressure relief device according to claim 1, characterized in that, It also includes pressure sensing wires; The pressure sensing line is laid on the sector and is wired to an external display via a signal line, which passes through the connecting tube.

8. The pressure relief device according to claim 4, characterized in that, It also includes a speed sensor; The speed sensor is installed inside the weight hammer and is wirelessly connected to an external display to measure the lifting and lowering speed of the pressure relief ball.

9. The pressure relief device according to claim 1, characterized in that, The pressure relief ball is equipped with a cross-shaped metal ring; The cross-shaped metal ring is connected to the pressure relief ball via a metal rod or a positioning spring, and the connecting pipe is hinged to the cross-shaped metal ring.

10. The pressure relief device according to claim 3, characterized in that, The hoisting mechanism includes a frame, a motor, a drum, and a winding cable; The frame is positioned above the pile hole; The motor and drum are mounted on the top of the frame; The motor is connected to the drum drive; The winding thread is wound on the spool, and the extended end of the winding thread is connected to the connecting arm.

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