Cast-in-place concrete thin-wall tubular pile hole forming device

Abstract

The utility model relates to the field of tubular piles, and provides a cast-in-place concrete thin-wall tubular pile hole forming device which comprises a connecting component, a sleeve and a high-pressure water pump, the high-pressure water pump is connected with a first liquid pipe through a back pressure liquid supply opening, the first liquid pipe extends to the sleeve and is embedded in the sleeve, and two or more vibration assemblies are embedded in the sleeve; a wheel cavity is formed in the vibration generation device, a vibration generation cavity is formed in the vibration box, the top wall of the wheel cavity communicates with the top wall of the vibration generation device through a liquid inlet channel, the bottom wall of the wheel cavity communicates with the bottom wall of the vibration generation device through a liquid outlet channel, and the inner wall of the wheel cavity is rotationally connected with a wheel shaft which is fixedly connected with an impeller and an eccentric block. The eccentric block is connected with an impact head through an elastic piece, the inner wall of the vibration generation cavity is fixedly connected with two or more curved surface vibration blocks, and the second liquid pipe is fixedly connected with two or more sprayers. A liquid film is formed outside the sleeve under the driving of the high-pressure water pump, so that the bonding force and the frictional resistance of surrounding substances to the sleeve are effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical pile technology, specifically to a hole-forming device for cast-in-place thin-walled cylindrical piles. Background Technology

[0002] Utility model patent CN215801579U discloses a casting-in-place concrete thin-walled cylindrical pile drilling device, including a connecting component and sleeves symmetrically arranged on the connecting component. The connecting component includes a connecting seat detachably connected to the top of the sleeve and a connecting plate arranged on the connecting seat. The connecting seat has an annular groove for inserting the sleeve, and a positioning element for positioning the sleeve is provided in the annular groove. The sleeve includes an outer cylinder and an inner cylinder coaxially arranged inside the outer cylinder, forming a cylinder cavity between the outer cylinder and the inner cylinder. The side walls of the outer cylinder are provided with pouring ports communicating with the cylinder cavity. The bottom of the sleeve is provided with a cylinder shoe with a cutting edge. An installation strip is provided on the opposite side of the outer cylinder. One installation strip has a through groove, and the other installation strip has a locking strip that can slide in the through groove. This solves the problem that traditional cylindrical pile drilling devices are not suitable for secondary drilling at adjacent locations in soft soil layers.

[0003] During the pulling process described in the aforementioned patent, mud is present around the sleeve, resulting in high resistance to pulling out the sleeve and making recovery difficult. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model aims to provide a drilling device for cast-in-place concrete thin-walled cylindrical piles. To solve these problems, this utility model adopts the following technical solution:

[0005] A hole-forming device for cast-in-place concrete thin-walled cylindrical piles includes a connecting member, a sleeve, and a high-pressure water pump. Two sleeves are connected to the connecting member and are connected through a connecting part on their respective outer walls. A first liquid pipe is connected to the high-pressure water pump through a back pressure liquid supply port. The first liquid pipe extends to the sleeve and is embedded in the sleeve. Two or more vibration components are embedded in the sleeve.

[0006] The vibration assembly includes a vibration generating device and a vibration box. The vibration generating device has a wheel cavity, and the vibration box has a vibration generating chamber. The top wall of the wheel cavity is connected to the top wall of the vibration generating device through a liquid inlet channel, and the bottom wall of the wheel cavity is connected to the bottom wall of the vibration generating device through a liquid outlet channel. A wheel shaft is rotatably connected to the inner wall of the wheel cavity, and the wheel shaft extends into the vibration generating chamber. An impeller and an eccentric block are fixedly connected to the wheel shaft. The impeller is located in the wheel cavity, and the eccentric block is located in the vibration generating chamber. An impact head is connected to the eccentric block through an elastic element. Two or more curved surface vibration blocks are fixedly connected to the inner wall of the vibration generating chamber. Adjacent vibration generating devices are connected through a third liquid pipe. The first liquid pipe is connected to the uppermost vibration generating device. A second liquid pipe is fixedly connected to the third liquid pipe, and two or more nozzles are fixedly connected to the second liquid pipe.

[0007] Preferably, a control valve is connected to the first liquid pipe.

[0008] Preferably, the nozzle is equipped with a one-way valve assembly.

[0009] Preferably, the outer wall of the sleeve is coated with a drag-reducing lubricating layer.

[0010] Preferably, the drag-reducing lubricating layer is a graphite lubricating coating.

[0011] Preferably, the vibrating box and the curved vibrating block are made of aluminum alloy.

[0012] Preferably, the second liquid tube is arranged horizontally, and the third liquid tube is arranged vertically.

[0013] Preferably, the distance between any two adjacent second liquid tubes is equal.

[0014] Preferably, the impeller is made of stainless steel.

[0015] Preferably, the elastic element is a spring body.

[0016] The present invention has the following beneficial effects:

[0017] This invention uses a high-pressure water pump to create a liquid film on the outside of the sleeve, effectively reducing the adhesion and frictional resistance of surrounding materials to the sleeve, improving the sleeve's extraction efficiency, and reducing the difficulty of extraction. Furthermore, the use of hydrodynamics to generate mechanical vibration in the vibrating box effectively disrupts the adhesion between the sleeve and surrounding materials, further reducing the difficulty of extraction. Attached Figure Description

[0018] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a hole-forming device for cast-in-place thin-walled cylindrical piles according to this utility model;

[0020] Figure 2 This is a utility model Figure 1 Enlarged view of the vibration generating device.

[0021] Reference numerals: 1. Connecting component; 2. Sleeve; 3. High-pressure water pump; 4. Back pressure liquid supply port; 5. First liquid pipe; 6. Control valve; 7. Second liquid pipe; 8. Vibration generating device; 9. Vibration box; 10. Nozzle; 11. Third liquid pipe; 12. Connecting part; 13. Liquid inlet channel; 14. Wheel cavity; 15. Liquid outlet channel; 16. Impeller; 17. Wheel shaft; 18. Eccentric block; 19. Elastic component; 20. Impact head; 21. Curved surface vibration block; 22. Vibration generating cavity. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be noted that the terms "vertical," "upper," "lower," and "horizontal," 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 utility model 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 utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] like Figures 1-2 As shown, a casting-in-place concrete thin-walled cylindrical pile drilling device includes a connecting member 1, a sleeve 2 and a high-pressure water pump 3. Two sleeves 2 are connected to the connecting member 1 and are connected by a connecting part 12 on their respective outer walls. A first liquid pipe 5 is connected to the high-pressure water pump 3 through a back pressure liquid supply port 4. The first liquid pipe 5 extends to the sleeve 2 and is embedded in the sleeve 2. Two or more vibration components are embedded in the sleeve 2.

[0026] The vibration assembly includes a vibration generating device 8 and a vibration box 9. The vibration generating device 8 has a wheel cavity 14, and the vibration box 9 has a vibration generating cavity 22. The top wall of the wheel cavity 14 is connected to the top wall of the vibration generating device 8 through a liquid inlet channel 13, and the bottom wall of the wheel cavity 14 is connected to the bottom wall of the vibration generating device 8 through a liquid outlet channel 15. A wheel shaft 17 is rotatably connected to the inner wall of the wheel cavity 14. The wheel shaft 17 extends into the vibration generating cavity 22. An impeller 16 and an eccentric block 18 are fixedly connected to the wheel shaft 17. The impeller 16 is located in the wheel cavity 14, and the eccentric block 18 is located in the vibration generating cavity 22. An impact head 20 is connected to the eccentric block 18 through an elastic element 19. Two or more curved surface vibration blocks 21 are fixedly connected to the inner wall of the vibration generating cavity 22. Adjacent vibration generating devices 8 are connected through a third liquid pipe 11. A first liquid pipe 5 is connected to the uppermost vibration generating device 8. A second liquid pipe 7 is fixedly connected to the third liquid pipe 11, and two or more nozzles 10 are fixedly connected to the second liquid pipe 7.

[0027] According to an optional embodiment of the present invention, a control valve 6 is connected to the first liquid pipe 5.

[0028] According to an optional embodiment of the present invention, the nozzle 10 is provided with a one-way valve assembly. The one-way valve assembly can prevent surrounding substances from entering the nozzle 10 before water is sprayed.

[0029] According to an optional embodiment of the present invention, the outer wall of the sleeve 2 is coated with a drag-reducing lubricating layer.

[0030] In one optional embodiment of this invention, the drag-reducing lubricating layer is a graphite lubricating coating. The graphite lubricating coating can reduce the adhesion of surrounding substances to the outer wall of the sleeve 2.

[0031] In one optional embodiment of this invention, the vibration box 9 and the curved vibration block 21 are made of aluminum alloy. Aluminum alloy has excellent vibration transmission capabilities.

[0032] In one optional embodiment of the present invention, the second liquid tube 7 is arranged horizontally, and the third liquid tube 11 is arranged vertically.

[0033] According to an optional embodiment of the present invention, the distance between any two adjacent second liquid tubes 7 is equal.

[0034] In one optional embodiment of this invention, the impeller 16 is made of stainless steel. Stainless steel has excellent corrosion resistance.

[0035] According to an optional embodiment of the present invention, the elastic element 19 is a spring body.

[0036] Implementation process:

[0037] When it is necessary to pull out the two sleeves 2, before using the vibration to pull them out, water is first pumped into the first liquid pipe 5 by the high-pressure water pump 3. The water in the first liquid pipe 5 flows to all the vibration generating devices 8, the third liquid pipe 11, the second liquid pipe 7 and the nozzle 10. The nozzle 10 can spray water to form a liquid film. The liquid film can reduce the adhesion of the surrounding substances to the sleeves 2, thereby reducing the resistance to pulling out the sleeves 2.

[0038] The back pressure supply port 4 is the interface component of the high pressure water pump 3. The back pressure supply port 4 can be connected to the control valve 6 through a PVC quick connector. The control valve 6 controls the opening and closing status and flow rate of the water.

[0039] As water passes through the inlet channel 13, wheel cavity 14, and outlet channel 15 in sequence, it drives the impeller 16 to rotate, which in turn drives the wheel shaft 17, eccentric block 18, elastic element 19, and impact head 20 to rotate. The impact head 20 continuously strikes all the curved surface vibration blocks 21, causing the curved surface vibration blocks 21 to vibrate. The curved surface vibration blocks 21 transmit the vibration to the vibration box 9, which causes the sleeve 2 to vibrate before being pulled out, changing the contact state between the sleeve 2 and the material, and further reducing the resistance of pulling out the sleeve 2.

[0040] The internal structure of connecting component 1, sleeve 2, and connecting part 12 is referenced in existing patent CN215801579U, and will not be specifically described or limited here.

[0041] This invention utilizes a high-pressure water pump 3 to spray water, forming a liquid film on the outside of the sleeve 2. This effectively reduces the adhesion and frictional resistance of surrounding materials to the sleeve 2, improving the extraction efficiency and reducing the difficulty of extraction. The hydraulic power of the vibrating box 9 generates mechanical vibration, effectively disrupting the adhesion between the sleeve 2 and surrounding materials, further reducing the difficulty of extraction. The combined effect of liquid film lubrication and periodic vibration prevents the sleeve 2 from forming a negative pressure closed cavity during extraction, breaking the "adsorption-locking" phenomenon between soil and concrete, significantly improving the extraction success rate, and is particularly suitable for soft soil or muddy strata. The second liquid pipe 7 is arranged horizontally, and the third liquid pipe 11 is arranged vertically, with multiple nozzles 10 distributed at equal intervals. This allows for simultaneous spraying at different depths, creating a complete and uniformly distributed liquid film, improving the adaptability and efficiency of the device. The materials are scientifically selected, providing rapid vibration response and wear and corrosion resistance. For example, the curved vibrating block 21 and the vibrating box 9 are made of aluminum alloy, and the impeller 16 is made of stainless steel.

[0042] The components, modules, mechanisms, and devices in this utility model that are not described in detail are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model 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 utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A drilling device for cast-in-place thin-walled cylindrical piles, characterized in that, It includes a connecting member (1), a sleeve (2) and a high-pressure water pump (3). The two sleeves (2) are connected to the connecting member (1). The two sleeves (2) are connected through the connecting part (12) on their respective outer walls. The high-pressure water pump (3) is connected to a first liquid pipe (5) through a back pressure liquid supply port (4). The first liquid pipe (5) extends to the sleeve (2) and is embedded in the sleeve (2). The sleeve (2) is embedded with two or more vibration components. The vibration assembly includes a vibration generating device (8) and a vibration box (9). The vibration generating device (8) has a wheel cavity (14), and the vibration box (9) has a vibration generating chamber (22). The top wall of the wheel cavity (14) is connected to the top wall of the vibration generating device (8) through a liquid inlet channel (13), and the bottom wall of the wheel cavity (14) is connected to the bottom wall of the vibration generating device (8) through a liquid outlet channel (15). A wheel shaft (17) is rotatably connected to the inner wall of the wheel cavity (14). The wheel shaft (17) extends into the vibration generating chamber (22), and an impeller (16) and an eccentric block (17) are fixedly connected to the wheel shaft (17). 8) The impeller (16) is located in the wheel cavity (14), the eccentric block (18) is located in the vibration generating cavity (22), the impact head (20) is connected to the eccentric block (18) through the elastic element (19), two or more curved surface vibration blocks (21) are fixed to the inner wall of the vibration generating cavity (22), the adjacent vibration generating devices (8) are connected through the third liquid pipe (11), the first liquid pipe (5) is connected to the uppermost vibration generating device (8), the third liquid pipe (11) is fixed to the second liquid pipe (7), and the second liquid pipe (7) is fixed to the second liquid pipe (7) with two or more nozzles (10).

2. The casting-in-place concrete thin-walled cylindrical pile drilling device according to claim 1, characterized in that, A control valve (6) is connected to the first liquid pipe (5).

3. The casting-in-place concrete thin-walled cylindrical pile drilling device according to claim 2, characterized in that, The nozzle (10) is equipped with a one-way valve assembly.

4. The casting-in-place concrete thin-walled cylindrical pile drilling device according to claim 3, characterized in that, The outer wall of the sleeve (2) is coated with a drag-reducing lubricating layer.

5. The casting-in-place concrete thin-walled cylindrical pile drilling device according to claim 4, characterized in that, The drag-reducing lubricating layer is a graphite lubricating coating.

6. The casting-in-place concrete thin-walled cylindrical pile drilling device according to claim 5, characterized in that, The vibrating box (9) and the curved vibrating block (21) are made of aluminum alloy.

7. The casting-in-place concrete thin-walled cylindrical pile drilling device according to claim 6, characterized in that, The second liquid tube (7) is arranged horizontally, and the third liquid tube (11) is arranged vertically.

8. The casting-in-place concrete thin-walled cylindrical pile drilling device according to claim 7, characterized in that, The distance between any two adjacent second liquid tubes (7) is equal.

9. A casting-in-place concrete thin-walled cylindrical pile drilling device according to claim 8, characterized in that, The impeller (16) is made of stainless steel.

10. The casting-in-place concrete thin-walled cylindrical pile drilling device according to claim 9, characterized in that, The elastic element (19) is a spring body.

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