Mechanical swelling pressure hole sealing muddy water pressure discharging device suitable for cast-in-place pile core drilling hole imaging detection
Through the mechanical expansion and pressure sealing hole turbid water pressure discharge device, the mechanical structure of the rebar pipe and rubber column ring is used, combined with water pressure or air pressure, and the turbid water in the drill core hole of the pouring pile is quickly and thoroughly pressed and discharged, solving the problem of slow turbid water discharge and unclear imaging in the traditional method, and achieving clear imaging in the drill core hole.
Patent Information
- Application Number
- CN202422486797.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-10-15
AI Technical Summary
In the imaging detection of the core drilling hole of the pile, it is difficult for the traditional hole washing method to quickly and thoroughly press and discharge the turbid water in the core drilling hole, resulting in the inability to clearly image the middle and lower sections of the hole.
The mechanical expansion and pressure sealing hole turbid water pressure discharge device is adopted. The device includes a rebar pipe, a rubber column ring, a force transmission sleeve and a hard hose. The force transmission sleeve is squeezed by manually rotating the rotating handle, which drives the rebar pipe to lift and form a closed space. Then, the turbid water is discharged by water or air injection by water or air pressure.
It realizes rapid and thorough pressure and discharge of turbid water in the drilling core hole, so that the drilling core hole has clear imaging conditions, solving the problem of slow discharge of turbid water and unclear imaging in traditional methods.
Smart Images
Figure CN222936066U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pile foundation detection, in particular to a mechanical expansion and pressure sealing hole muddy water pressure discharge device suitable for core drilling hole imaging detection of cast-in-place piles. Background Technique
[0002] When conducting engineering quality inspection on cast-in-place piles, the core drilling method belongs to a direct detection method, which can detect the integrity of the pile body of the cast-in-place pile, concrete strength, thickness of pile tip sediment, characteristics of bearing stratum, pile length, etc. Due to the limitation of drilling technology, it is difficult to accurately measure the sediment thickness of cast-in-place piles through core drilling detection, and the artificial judgment error is relatively large. Sometimes, due to mechanical failures, the core samples are worn or the fracture surfaces do not match, which cannot truthfully reflect the integrity of the pile body. Through hole imaging detection, effective comparison and verification can be carried out. In addition, when there are defects in the pile body concrete, it can also be further discriminated and confirmed through hole imaging, and at the same time, it can assist in identifying the geotechnical properties of the bearing stratum at the pile tip. During core drilling detection, the debris shed by the diamond drill bit during the process of drilling and grinding the core sample is mixed with the circulating water to form a turbid suspension, which hinders the hole imaging detection. The traditional hole flushing method mostly adopts the positive circulation method, that is, tap water is connected to a hard water pipe and inserted into the bottom of the drill hole to continuously inject clean water, and the clean water carries the turbid water and rises from the bottom of the hole and returns to the hole opening along the gap between the water pipe and the hole wall. Due to the limited water outlet pressure of the water pipe and the fact that the density of clean water is lower than that of the turbid water in the hole, it is very difficult to replace all the turbid water in the middle and lower sections of a core drilling hole dozens of meters deep with clean water, and the replacement process is slow, often resulting in unclear imaging when the camera reaches the middle and lower sections of the hole. Content of the Utility Model
[0003] The embodiment of the utility model aims to provide a mechanical expansion and pressure sealing hole muddy water pressure discharge device suitable for core drilling hole imaging detection of cast-in-place piles, so as to quickly and thoroughly discharge all the muddy water in the core drilling hole.
[0004] The embodiment of the utility model solves its technical problems by adopting the following technical solutions: providing a mechanical expansion and pressure sealing hole muddy water pressure discharge device suitable for core drilling hole imaging detection of cast-in-place piles, including: a threaded steel pipe; a three-way joint connected to the top end of the threaded steel pipe; a gland connected to the top end of the three-way joint; a pipe valve assembly connected to the side end of the three-way joint; a rubber column ring sleeved on the threaded steel pipe; a force transmission sleeve sleeved on the threaded steel pipe and abutted against the top end of the rubber column ring; a rotating handle threadedly connected to the threaded steel pipe and located at the top end of the force transmission sleeve; a thrust bearing sleeved on the threaded steel pipe and abutted between the rotating handle and the force transmission sleeve; a limit flange nut threadedly connected to the threaded steel pipe and abutted against the bottom end of the rubber column ring; a fixed bracket symmetrically connected to both sides of the force transmission sleeve; a hard rubber pipe, the top end of the hard rubber pipe penetrates into the bottom end of the threaded steel pipe and leads out from the gland at the top end of the three-way joint, and a plurality of adjacent drainage holes are opened on the bottom end pipe wall of the hard rubber pipe.
[0005] In some embodiments, the pipe valve assembly includes a water injection pipe and a gas injection pipe. The water injection pipe is connected to a water source, and a water injection pipe valve is provided on the water injection pipe. The gas injection pipe is connected to a gas source, and a gas injection pipe valve is provided on the gas injection pipe.
[0006] In some embodiments, an upper gasket is connected to the top end of the force transmission sleeve, and the upper gasket abuts against the thrust bearing; a lower gasket is connected to the bottom end of the force transmission sleeve, and the lower gasket abuts against the top end of the rubber column ring.
[0007] Compared with the prior art, when using the present muddy water pressure discharging device to discharge the muddy water in the core drilling hole, the bottom end of the hard rubber pipe is inserted into the bottom of the core drilling hole, the top end of the hard rubber pipe penetrates through the bottom end of the threaded steel pipe and is led out from the gland at the top end of the tee joint. Then, the lower end of the present muddy water pressure discharging device is inserted into the core drilling hole until the fixed brackets on both sides of the force transmission sleeve abut against the pile top of the core drilling hole, so that the lower part of the present muddy water pressure discharging device is erected in the core drilling hole. Then, the user manually rotates the rotary handle to squeeze the force transmission sleeve. At this time, the thrust bearing between the rotary handle and the force transmission sleeve can reduce the frictional resistance and bear the axial thrust generated by the rotary handle towards the force transmission sleeve, and allows the rotary handle to freely rotate in the radial direction. Since the fixed brackets on both sides of the force transmission sleeve abut against the pile top of the core drilling hole, a reverse force is provided when the rotary handle rotates to lift the threaded steel pipe by screw drive. When the threaded steel pipe is lifted, the rubber column ring and the limit flange nut are driven to follow and lift. When the rubber column ring is lifted, the top and bottom ends of the rubber column ring are respectively squeezed by the force transmission sleeve and the limit flange nut, so that the rubber column ring expands radially and fits tightly with the hole wall of the core drilling hole. Then, the gland at the top end of the tee joint is rotated and tightened to fit tightly with the pipe wall of the hard rubber pipe, so as to form an effective sealed space in the core drilling hole. Then, by opening the water injection pipe valve or the gas injection pipe valve in the pipe valve assembly at the side end of the tee joint, clean water or high-pressure gas is continuously injected into the core drilling hole. Under the action of water pressure or air pressure, the muddy water in the core drilling hole continuously overflows into the hard rubber pipe from several drain holes on the bottom wall of the hard rubber pipe and is discharged out of the core drilling hole from bottom to top until there is no muddy water discharged from the core drilling hole. The utility model can quickly and thoroughly discharge the muddy water in the core drilling hole, so that clear imaging conditions are provided in the core drilling hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.
[0009] Figure 1 is a schematic diagram of the normal state of the muddy water pressure discharging device provided by the present utility model;
[0010] Figure 2It is a schematic diagram of the usage state of the muddy water pressure drainage device provided by the present utility model.
[0011] Reference numerals:
[0012] 100, muddy water pressure drainage device; 10, threaded steel pipe; 11, limit flange nut; 20, three-way joint; 30, rubber column ring; 41, rotating handle; 42, force transmission sleeve; 421, upper gasket; 422, lower gasket; 423, thrust bearing; 424, fixed bracket; 50, hard rubber pipe; 501, drainage hole; 70, gland; 80, pipe valve assembly; 81, water injection pipe; 811, water injection pipe valve; 82, gas injection pipe; 821, gas injection pipe valve; 200, core drilling hole. Detailed implementation manners
[0013] For the convenience of understanding the present utility model, the present utility model will be described in more detail below with reference to the drawings and specific embodiments. It should be noted that when an element is expressed as "connected" to another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. The terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0014] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model.
[0015] Below in conjunction with Figures 1 to 2 , through specific embodiments, the mechanical expansion and pressure sealing muddy water pressure drainage device 100 applicable to the imaging detection of the core drilling hole 200 of the cast-in-place pile provided by the embodiments of the present application will be described in detail. Figure 1 It is a schematic diagram of the normal state of the muddy water pressure drainage device 100 provided by the present utility model, Figure 2 It is a schematic diagram of the usage state of the muddy water pressure drainage device 100 provided by the present utility model.
[0016] The mechanical expansion and pressure sealing hole and muddy water pressure discharge device 100 applicable to the imaging detection of the core drilling hole 200 of the cast-in-place pile provided by the utility model comprises: a threaded steel pipe 10; a tee joint 20 connected to the top end of the threaded steel pipe 10; a gland 70 connected to the top end of the tee joint 20; a pipe valve assembly 80 connected to the side end of the tee joint 20; a rubber column ring 30 sleeved on the threaded steel pipe 10; a force transmission sleeve 42 sleeved on the threaded steel pipe 10 and abutted against the top end of the rubber column ring 30; a rotary handle 41 threadedly connected to the threaded steel pipe 10 and located at the top end of the force transmission sleeve 42; a thrust bearing 423 sleeved on the threaded steel pipe 10 and abutted between the rotary handle 41 and the force transmission sleeve 42; a limit flange nut 11 threadedly connected to the threaded steel pipe 10 and abutted against the bottom end of the rubber column ring 30; a fixed bracket 424 symmetrically connected to both sides of the force transmission sleeve 42; a hard rubber pipe 50, the top end of the hard rubber pipe 50 penetrates into the bottom end of the threaded steel pipe 10 and leads out from the gland 70 at the top end of the tee joint 20, and a plurality of adjacent drain holes 501 are formed in the bottom wall of the bottom end of the hard rubber pipe 50.
[0017] When using the present muddy water pressure discharge device 100 to discharge the muddy water in the core drilling hole 200, insert the bottom end of the hard rubber hose 50 into the bottom of the core drilling hole 200. The top end of the hard rubber hose 50 penetrates from the bottom end of the threaded steel pipe 10 and is led out from the gland 70 at the top end of the three-way joint 20. Then insert the lower end of the present muddy water pressure discharge device 100 into the core drilling hole 200 until the fixed brackets 424 on both sides of the force transmission sleeve 42 abut against the pile top of the core drilling hole 200, so that the lower end part of the present muddy water pressure discharge device 100 is erected in the core drilling hole 200. Then the user manually rotates the rotating handle 41 to squeeze the force transmission sleeve 42. At this time, the thrust bearing 423 between the rotating handle 41 and the force transmission sleeve 42 can reduce the frictional resistance and bear the axial thrust generated by the rotating handle 41 towards the force transmission sleeve 42, and allows the rotating handle 41 to rotate freely in the radial direction. Since the fixed brackets 424 on both sides of the force transmission sleeve 42 abut against the pile top of the core drilling hole 200, a reaction force is provided when the rotating handle 41 rotates to lift the threaded steel pipe 10 by screw drive. When the threaded steel pipe 10 is lifted, it drives the rubber column ring 30 and the limit flange nut 11 to follow and lift. When the rubber column ring 30 is lifted, the top and bottom ends of the rubber column ring 30 are respectively squeezed by the force transmission sleeve 42 and the limit flange nut 11, so that the rubber column ring 30 expands radially and fits tightly with the hole wall of the core drilling hole 200. Then rotate and tighten the gland 70 at the top end of the three-way joint 20 to fit tightly with the pipe wall of the hard rubber hose 50, so as to form an effective sealed space in the core drilling hole 200. Then, by opening the water injection pipe valve 811 or the air injection pipe valve 821 in the pipe valve assembly 80 at the side end of the three-way joint 20, continuously inject clean water or high-pressure gas into the core drilling hole 200. Under the action of water pressure or air pressure, the muddy water in the core drilling hole 200 continuously overflows into the hard rubber hose 50 from the several drain holes 501 on the bottom end pipe wall of the hard rubber hose 50 and is discharged out of the core drilling hole 200 from bottom to top until there is no muddy water discharged from the core drilling hole 200. The utility model can quickly and thoroughly discharge the muddy water in the core drilling hole 200, so that clear imaging conditions are provided in the core drilling hole 200.
[0018] In some embodiments, the pipe valve assembly 80 includes a water injection pipe 81 and an air injection pipe 82. The water injection pipe 81 is connected to a water source, and a water injection pipe valve 811 is provided on the water injection pipe 81. The air injection pipe 82 is connected to an air source, and an air injection pipe valve 821 is provided on the air injection pipe 82.
[0019] During specific implementation: When it is necessary to inject clear water into the core drilling hole 200, the water injection pipe 81 of the pipe valve assembly 80 is connected to a water source. Open the water injection pipe valve 811 on the water injection pipe 81 and close the gas injection pipe valve 821 on the gas injection pipe 82. Thus, the clear water conveyed by the water injection pipe 81 can enter the core drilling hole 200 along the gap between the threaded steel pipe 10 and the hard rubber pipe 50. When it is necessary to inject high-pressure gas into the core drilling hole 200, the gas injection pipe 82 of the pipe valve assembly 80 is connected to high-pressure gas. Open the gas injection pipe valve 821 on the gas injection pipe 82 and close the water injection pipe valve 811 on the water injection pipe 81. Thus, the high-pressure gas conveyed by the gas injection pipe 82 can enter the core drilling hole 200 along the gap between the threaded steel pipe 10 and the hard rubber pipe 50. Through such a setting, the pipe valve assembly 80 can effectively inject clear water or high-pressure gas into the core drilling hole 200.
[0020] In some embodiments, an upper gasket 421 is connected to the top end of the force transmission sleeve 42, and the upper gasket 421 abuts against the thrust bearing 423; a lower gasket 422 is connected to the bottom end of the force transmission sleeve 42, and the lower gasket 422 abuts against the top end of the rubber column ring 30.
[0021] During specific implementation: The upper gasket 421 can increase the contact area between the force transmission sleeve 42 and the thrust bearing 423, so that when the force transmission sleeve 42 is subjected to the thrust of the rotating handle 41, the force transmission sleeve 42 can support the rotating handle 41 to drive the threaded steel pipe 10 to lift with more uniform force. The lower gasket 422 can increase the contact area between the force transmission sleeve 42 and the rubber column ring 30, so that when the rubber column ring 30 expands under the extrusion force of the force transmission sleeve 42, the force transmission sleeve 42 can contact and extrude the rubber column ring 30 more evenly through the lower gasket 422.
[0022] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; Under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as above. For the sake of brevity, they are not provided in detail; Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A mechanical expansion and sealing device for draining turbid water from bored pile core holes, characterized in that: include: Threaded steel pipe; A tee joint connected to the top of the threaded steel pipe; A cable gland connected to the top of the tee connector; A pipe valve assembly connected to the side end of the three-way connector; A rubber column ring, sleeved on the threaded steel pipe; A force transmission sleeve, which is sleeved on the threaded steel pipe and abuts against the top end of the rubber column ring; A rotating handle, threadedly connected to the threaded steel pipe and located at the top of the force transmission sleeve; A thrust bearing is sleeved on the threaded steel pipe and abuts between the rotating handle and the force transmission sleeve; A limiting flange nut, threadedly connected to the threaded steel pipe and abutting against the bottom end of the rubber column ring; A fixed bracket symmetrically connected to both sides of the force transmission sleeve; A hard rubber tube, the top end of which penetrates into the bottom end of the threaded steel tube and is led out from the gland at the top end of the tee joint, and a plurality of adjacent drainage holes are opened on the tube wall at the bottom end of the hard rubber tube.
2. The mechanical expansion and sealing turbid water pressure discharge device suitable for bored pile core hole imaging detection according to claim 1 is characterized in that: The pipe-valve assembly comprises a water injection pipe and an air injection pipe. The water injection pipe is connected to a water source and is provided with a water injection pipe valve. The air injection pipe is connected to an air source and is provided with an air injection pipe valve.
3. The mechanical expansion and sealing turbid water pressure discharge device suitable for bored pile core hole imaging detection according to claim 1 is characterized in that: The top end of the force transmission sleeve is connected with an upper gasket. The upper gasket is in contact with the thrust bearing; the bottom end of the force transmission sleeve is connected with a lower gasket. The lower gasket is in contact with the top end of the rubber column ring.