CN109723398B - Dig bored concrete pile drilling cleaning device soon - Google Patents
Dig bored concrete pile drilling cleaning device soon Download PDFInfo
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- CN109723398B CN109723398B CN201811632455.XA CN201811632455A CN109723398B CN 109723398 B CN109723398 B CN 109723398B CN 201811632455 A CN201811632455 A CN 201811632455A CN 109723398 B CN109723398 B CN 109723398B
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Abstract
The invention provides a drilling cleaning device for a rotary-digging cast-in-place pile, which belongs to the technical field of cast-in-place pile construction and comprises a plurality of detachable connecting guide pipes, a spray head and a supporting structure, wherein the upper ends of the guide pipes are connected with a slurry pumping pump through slurry pumping hoses; the spray head is of a circular truncated cone-shaped structure, is sleeved and fixed at the bottom of the guide pipe by virtue of a limiting structure connected with the guide pipe and is coaxial with the guide pipe, a plurality of spray holes for spraying high-pressure air are uniformly distributed on the conical surface and the small end surface of the spray head respectively, and the spray head is connected with a high-pressure air pump outside the drill hole by virtue of a high-pressure hose; the support structure is supported on a support surface at the periphery of the borehole for supporting the conduit. According to the drilling cleaning device for the rotary-digging cast-in-place pile, provided by the invention, high-pressure air is injected while the mud in the drilling hole is extracted, the mud is stirred, the problem of uneven mud sedimentation and separation is avoided, meanwhile, the dropped mud clusters can be broken and separated into small particles, and the cleaning effect and efficiency are improved.
Description
Technical Field
The invention belongs to the technical field of cast-in-place pile construction, and particularly relates to a drilling hole cleaning device for a rotary-digging cast-in-place pile.
Background
The drilling bored concrete pile is constructed, and a drilling machine generally adopts impact, punching grab, forward and reverse circulation rotary drill, rotary drill and the like. And (3) using a slurry wall protection pore-forming process. As the mud is adopted for protecting the wall, after the design depth of the drill hole is reached, the design requirement is met through inspection, and the thick mud and the drilling slag sediment at the bottom of the drill hole are completely removed, so that the quality can be ensured. The hole cleaning operation is required. Various indexes, specific gravity, viscosity, sand content and the like of the slurry are reduced to be within the standard requirements. The aim is to reduce the thickness of the sediment layer as much as possible and improve the bearing capacity of the hole bottom. The construction method of mud wall protection is adopted. The construction method comprises the following steps:
leveling field → slurry preparation → pile casing embedding → working platform laying → drilling machine installation and positioning → drilling hole forming → hole cleaning and hole forming quality inspection → steel reinforcement cage lowering → underwater concrete pouring → pile casing extraction → quality inspection. The sediment at the bottom of the pile after the hole is formed is difficult to clean, the hole cleaning method can generally adopt a positive-circulation rotary drilling machine, a reverse-circulation rotary machine vacuum mud sucking machine slurry pumping method, a sediment pumping barrel and the like, the hole cleaning method is not clean for sediment, the construction efficiency is low, if larger mud masses fall into the bottom of the hole, the hole cleaning is difficult to clean, and the hole cleaning time is too long.
Disclosure of Invention
The invention aims to provide a rotary excavating bored concrete pile drilling cleaning device to solve the technical problems of poor hole cleaning effect and long time in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a dig bored concrete pile drilling cleaning device soon, includes:
the detachable connecting guide pipes extend into the drill hole and are close to the bottom of the drill hole and used for pumping out slurry in the drill hole, and the upper ends of the guide pipes are connected with a slurry pumping pump through slurry pumping hoses;
the spray head is of a round table-shaped structure, is sleeved and fixed at the bottom of the guide pipe by virtue of a limiting structure connected with the guide pipe and is coaxial with the guide pipe, a plurality of spray holes for spraying high-pressure air are uniformly distributed on the conical surface and the small end surface of the spray head respectively, and the spray head is connected with a high-pressure air pump outside the drill hole by virtue of a high-pressure hose;
and the supporting structure is supported on a supporting surface at the periphery of the drilling hole and is used for supporting the guide pipe.
Furthermore, the limiting structure comprises an upper limiting flange fixed at the lower end of the guide pipe and a lower limiting flange in threaded connection with the lower end of the guide pipe, and the spray head is limited between the upper limiting flange and the lower limiting flange.
Furthermore, the lower end face of the lower limiting flange is provided with an outwards-opened horn mouth for forming siphon to pump out slurry.
Furthermore, two air inlets are formed in the large end face of the spray head, connectors are arranged on the air inlets, three stainless steel pipes are arranged between the high-pressure hose and the connectors, and the three stainless steel pipes are connected through tee joints.
Furthermore, the conical surface of the nozzle is an inward concave arc surface.
Furthermore, the central line of the spray hole arranged on the conical surface is vertical to the generatrix of the conical surface, so that the spray hole sprays obliquely downwards.
Further, the supporting structure comprises an annular chassis in contact with the supporting surface and a cross for supporting the conduit, wherein the center of the cross is crossed and provided with positioning holes for the conduit to pass through and support and position, the cross is provided with two positioning blocks, and the annular chassis is provided with positioning grooves for the positioning blocks to be clamped in.
Further, still include the slip casting funnel, insert and locate the upper end of pipe.
Further, the grouting device also comprises a bracket for supporting the grouting hopper, and the bracket is supported on a supporting surface on the periphery of the drilling hole.
Furthermore, two lifting hooks are symmetrically arranged at the opening of the grouting funnel.
The drilling cleaning device for the rotary excavating cast-in-place pile has the beneficial effects that: compared with the prior art, when extracting mud in the drilling, pour into highly-compressed air into, stir mud, avoid mud to deposit the inhomogeneous problem of separation, also can carry out the broken separation to the mud group that drops simultaneously and be the tiny particle, improve the effect and the efficiency of clearance once.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a rotary excavating cast-in-place pile drilling hole cleaning device provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of hole cleaning of a rotary drilling cast-in-place pile according to an embodiment of the present invention;
FIG. 3 is a schematic view of another embodiment of the showerhead of FIG. 1;
fig. 4 is a schematic top view of the supporting structure in fig. 1.
Wherein, the labels in the figure are:
1-a hook; 2-a grouting funnel; 3-a scaffold; 4-high pressure hose; 5-a cross; 6-annular chassis; 7-positioning blocks; 8-a three-way joint; 9-stainless steel tube; 10-a spray head; 11-a lower limiting flange; 12-a bell mouth; 13-upper limiting flange; 15-a catheter; 16-slurry pumping hose.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2 together, a drilling and cleaning device for a rotary excavating cast-in-place pile according to the present invention will now be described. The drilling cleaning device for the rotary-digging cast-in-place pile comprises a plurality of detachable connecting guide pipes 15, a spray head 10 and a supporting structure, wherein the guide pipes 15 extend into a drill hole and are close to the bottom of the drill hole and used for pumping out slurry in the drill hole, and the upper ends of the guide pipes 15 are connected with a slurry pumping pump through slurry pumping hoses 16; the spray head 10 is of a truncated cone-shaped structure, is sleeved and fixed at the bottom of the guide pipe 15 by virtue of a limiting structure connected with the guide pipe 15 and is coaxial with the guide pipe 15, a plurality of spray holes for spraying high-pressure air are uniformly distributed on the conical surface and the small end surface of the spray head 10 respectively, and the spray head 10 is connected with a high-pressure air pump outside a drill hole by virtue of a high-pressure hose 4; the support structure is supported on a support surface at the periphery of the bore for supporting the conduit 15.
Compared with the prior art, the rotary-digging cast-in-place pile drilling hole cleaning device provided by the invention has the advantages that high-pressure air is injected while the mud in the drilling hole is extracted, the mud is stirred, the problem of uneven mud sedimentation and separation is avoided, meanwhile, the dropped mud clusters can be broken and separated into small particles, and the effect and efficiency of one-time cleaning are improved. Wherein the conduits 15 are connected to each other by means of a screw.
Referring to fig. 1 to 2, as a specific embodiment of the drilling and cleaning device for the rotary excavating cast-in-place pile, the limiting structure includes an upper limiting flange 13 fixed at the lower end of the guide pipe 15 and a lower limiting flange 11 screwed to the lower end of the guide pipe 15, and the nozzle 10 is limited between the upper limiting flange 13 and the lower limiting flange 11. The upper limiting flange 13 can be welded at the lower end of the lowest guide pipe 15, namely in the series of guide pipes 15, one end of one guide pipe 15 is welded with the flange, the lower limiting flange 11 is in threaded connection with the guide pipe 15, namely the lower end of the guide pipe 15 is provided with internal threads, after the spray head 10 is sleeved on the guide pipe 15, the lower limiting flange 11 is installed, so that the spray head 10 is convenient to install and dismantle, and after the spray head 10 is dismantled, the guide pipe 15 can still be normally used; in addition, the nozzle 10 may or may not rotate, and in order to prevent the nozzle 10 from rotating, a wear-resistant gasket may be additionally installed between the lower limiting flange 11 and the nozzle 10.
Referring to fig. 1 to 2, as a specific embodiment of the drilling and cleaning device for the rotary excavating cast-in-place pile, a flared bell mouth 12 is provided on a lower end surface of the lower limiting flange 11 for forming siphon to pump out slurry. The lower end of the guide pipe 15 is provided with the bell mouth 12, and the surrounding space of the opening of the guide pipe 15 is increased to form air pressure difference, so that slurry can be conveniently extracted.
Referring to fig. 1 and 2, as a specific embodiment of the device for cleaning a drilled hole of a rotary excavating cast-in-place pile provided by the present invention, two air inlets are provided on a large end surface of the nozzle 10, a joint is provided on the air inlets, three stainless steel pipes 9 are provided between the high-pressure hose 4 and the joint, and the three stainless steel pipes 9 are connected by means of a three-way joint 8. Through two inlet ports, improve the pressure in nozzle opening department, be convenient for can stir mud, the pipeline that is in near shower nozzle 10 simultaneously adopts nonrust steel pipe 9, improves the durability, and is not fragile, adopts two-way joint connection between nonrust steel pipe 9 and the joint, adopts the clamp fastening between nonrust steel pipe 9 and the high-pressure hose 4, wherein, when clear hole uses, high-pressure hose 4 does not contact with mud. In addition, the high-pressure hose 4 is adopted to introduce gas, and the flexibility of the high-pressure hose is utilized, so that the operation is convenient.
Referring to fig. 3, as a specific embodiment of the device for cleaning a drilled hole of a rotary excavating cast-in-place pile provided by the present invention, the conical surface of the nozzle 10 is an inward concave arc surface. Through the cambered surface, reduce and occupy the volume, also reduce the space of cavity in shower nozzle 10, improve gaseous pressure.
Referring to fig. 1, as a specific embodiment of the device for cleaning a drill hole of a rotary excavating cast-in-place pile provided by the present invention, a center line of a nozzle hole formed in the conical surface is perpendicular to a generatrix of the conical surface, so that the nozzle hole is ejected obliquely downward. That is, the included angle of less than 90 degrees is formed between the central line of the spray hole and the central line of the guide pipe, the spray is sprayed towards the lower oblique direction, the air flow from the lower side to the upper side is formed, the slurry is rolled from the lower side to the upper side, large particles precipitated to the bottom are stirred conveniently, and the cleaning effect and efficiency are improved. And for the arc-shaped surface, the central line of the spray hole points to the center corresponding to the radian of the arc-shaped surface.
Referring to fig. 1 and 4, as a specific embodiment of the drilling and cleaning device for the rotary excavating cast-in-place pile, the supporting structure includes an annular chassis 6 contacting with a supporting surface and a cross 5 for supporting the guide tube 15, a positioning hole for the guide tube 15 to pass through and supporting and positioning the guide tube 15 is arranged at the intersecting center of the cross 5, two positioning blocks 7 are arranged on the cross 5, and a positioning groove for the positioning blocks 7 to be clamped is arranged on the annular chassis 6. The end of the guide pipe 15 is provided with a supporting and connecting flange, the guide pipe 15 can be suspended and supported in the air through the positioning hole of the cross 5, the operation is convenient, the annular chassis 6 is provided with a positioning groove to position the cross 5, and the two positioning blocks 7 are respectively positioned on the two supporting rods of the cross 5.
Referring to fig. 1, as a specific embodiment of the device for cleaning a drill hole of a rotary excavating cast-in-place pile provided by the present invention, the device further includes a grouting funnel 2 inserted into an upper end of the guide pipe 15. When grouting is needed, the spray head 10, the high-pressure hose 4 and the slurry pumping hose 16 are detached, the grouting funnel 2 is inserted into the guide pipe 15, grouting operation can be conducted, conversion between the two processes is convenient and fast, and construction efficiency is improved.
Referring to fig. 1, as a specific embodiment of the device for cleaning a drill hole of a rotary excavating cast-in-place pile provided by the present invention, the device further includes a support 3 for supporting the grouting funnel 2, and the support is supported on a support surface at the periphery of the drill hole. During grouting, the grouting funnel 2 is filled with grout, and the grouting funnel 2 and the lower guide pipe 15 are impacted, so that the grouting funnel 2 is supported by the support 3 to reduce a part of the impact.
As a specific implementation mode of the rotary excavating bored concrete pile drilling cleaning device provided by the invention, two lifting hooks 1 are symmetrically arranged at an opening of a grouting funnel 2.
The invention also provides a hole cleaning and grouting method, wherein when cleaning holes, the spray head 10 is arranged at one end of the conduit 15, is limited by a limiting structure, is connected with the high-pressure hose 4, and sends the conduit 15 into the drilled hole, when the surface of the slurry is close to the surface of the slurry, the high-pressure air pump is opened to send high-pressure air, and the conduit 15 is continuously sent into the slurry, and when the bottom of the conduit 15 is close to the bottom of the drilled hole, the slurry pump is opened to pump the slurry; and after the grouting is finished, checking the drilled hole, taking out the guide pipe 15, disassembling the spray head 10 and the high-pressure hose 4, disassembling the grouting hose 16, feeding the guide pipe 15 after the steel bar net cage is put down, inserting the grouting funnel 2 into the guide pipe, and performing grouting operation. And a set of guide pipes is adopted for slurry pumping and grouting, so that materials are recycled for many times, and materials are saved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. Dig bored concrete pile drilling cleaning device soon, its characterized in that includes:
the detachable connecting guide pipes extend into the drill hole and are close to the bottom of the drill hole and used for pumping out slurry in the drill hole, and the upper ends of the guide pipes are connected with a slurry pumping pump through slurry pumping hoses;
the spray head is of a round table-shaped structure, is sleeved and fixed at the bottom of the guide pipe by virtue of a limiting structure connected with the guide pipe and is coaxial with the guide pipe, a plurality of spray holes for spraying high-pressure air are uniformly distributed on the conical surface and the small end surface of the spray head respectively, and the spray head is connected with a high-pressure air pump outside the drill hole by virtue of a high-pressure hose; the limiting structure comprises an upper limiting flange fixed at the lower end of the guide pipe and a lower limiting flange in threaded connection with the lower end of the guide pipe, the spray head is limited between the upper limiting flange and the lower limiting flange, and the lower end face of the lower limiting flange is provided with a flared opening used for forming siphon to pump out slurry; the conical surface of the spray head is an inward concave arc surface; the central line of the spray hole arranged on the conical surface is vertical to the generatrix of the conical surface, so that the spray hole sprays obliquely downwards;
a support structure supported on a support surface at the periphery of the borehole for supporting the conduit;
a method for cleaning holes and grouting comprises the steps that when the holes are cleaned, a spray nozzle is installed at one end of a guide pipe, the spray nozzle is limited by a limiting structure, a high-pressure hose is connected, the guide pipe is fed into a drilled hole, when the spray nozzle is close to the surface of slurry, a high-pressure air pump is started to feed high-pressure air into the drilled hole, the guide pipe is continuously fed into the slurry, and when the bottom of the guide pipe is close to the bottom of the drilled hole, a slurry pump is started to pump the slurry; after the slurry pumping is finished, checking the drilled hole, taking out the guide pipe, disassembling the spray head and the high-pressure hose, disassembling the slurry pumping hose, feeding the guide pipe after the steel bar net cage is arranged, inserting a grouting funnel into the guide pipe, and performing grouting operation; and a set of guide pipes is adopted for slurry pumping and grouting, so that materials are recycled for many times, and materials are saved.
2. The rotary excavating bored concrete pile drilling and cleaning device according to claim 1, characterized in that: the high-pressure hose is characterized in that two air inlets are formed in the large end face of the spray head, connectors are arranged on the air inlets, three stainless steel pipes are arranged between the high-pressure hose and the connectors, and the three stainless steel pipes are connected through tee joints.
3. The rotary excavating bored concrete pile drilling and cleaning device according to claim 1, characterized in that: the supporting structure comprises an annular chassis in contact with a supporting surface and a cross for supporting the conduit, the center of the cross is crossed and provided with a positioning hole for the conduit to pass through and support and position, the cross is provided with two positioning blocks, and the annular chassis is provided with a positioning groove for the positioning blocks to be clamped in.
4. The rotary excavating bored concrete pile drilling and cleaning device according to any one of claims 1 to 3, characterized in that: the device also comprises a grouting funnel which is inserted at the upper end of the conduit.
5. The rotary excavating bored concrete pile drilling and cleaning device according to claim 4, wherein: the grouting device also comprises a bracket for supporting the grouting hopper, and the bracket is supported on a supporting surface at the periphery of the drilling hole.
6. The rotary excavating bored concrete pile drilling and cleaning device according to claim 4, wherein: two lifting hooks are symmetrically arranged at the opening of the grouting funnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811632455.XA CN109723398B (en) | 2018-12-29 | 2018-12-29 | Dig bored concrete pile drilling cleaning device soon |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811632455.XA CN109723398B (en) | 2018-12-29 | 2018-12-29 | Dig bored concrete pile drilling cleaning device soon |
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| CN109723398A CN109723398A (en) | 2019-05-07 |
| CN109723398B true CN109723398B (en) | 2021-11-30 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565640B (en) * | 2019-09-05 | 2024-03-22 | 中建八局第一建设有限公司 | Stirring and crushing device for pile head of bored pile |
| CN112878315A (en) * | 2020-06-03 | 2021-06-01 | 富利建设集团有限公司 | End-bearing rotary-digging hole-forming cast-in-place pile based on Civil 3D technology and construction method |
| CN112411549B (en) * | 2020-11-06 | 2021-11-09 | 中国港湾工程有限责任公司 | Cast-in-place pile steel casing hole sweeping equipment |
| CN112576210B (en) * | 2020-12-15 | 2022-11-04 | 中铁北京工程局集团有限公司 | Clear hole device of drilling bored concrete pile |
| CN114776240B (en) * | 2022-05-26 | 2023-10-03 | 中国水利水电第七工程局有限公司 | Slag removal and water removal device for bottom of bored concrete pile hole |
| CN114855800B (en) * | 2022-06-16 | 2023-12-12 | 河南中原金太阳技术有限公司 | Automatic cleaning device for hole bottoms after pile foundation construction |
| CN115142421B (en) * | 2022-08-09 | 2024-03-12 | 中国建筑第八工程局有限公司 | Guide and drainage device for pouring cast-in-place pile and guide and drainage method thereof |
| CN116241201B (en) * | 2023-02-23 | 2023-08-25 | 安徽建筑大学 | Bored concrete pile drilling secondary cleaning device |
| CN117569760A (en) * | 2024-01-15 | 2024-02-20 | 西安石油大学 | Bored pile device for bridge engineering |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| NO332113B1 (en) * | 2010-08-05 | 2012-06-25 | Tomax As | Device at pump located at a drill bit. |
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| CN101328709A (en) * | 2007-06-20 | 2008-12-24 | 上海塔奇实业有限公司 | Borehole cleaning method and apparatus for fast reverse circulation by using high pressure air |
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