CN105064330A - Double-pipeline drill bit for cast-in-place stiffening core composite pile - Google Patents
Double-pipeline drill bit for cast-in-place stiffening core composite pile Download PDFInfo
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- CN105064330A CN105064330A CN201510504529.1A CN201510504529A CN105064330A CN 105064330 A CN105064330 A CN 105064330A CN 201510504529 A CN201510504529 A CN 201510504529A CN 105064330 A CN105064330 A CN 105064330A
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Abstract
The invention relates to a double-pipeline drill bit for a cast-in-place stiffening core composite pile. The double-pipeline drill bit comprises an opening/closing blade, a core pile molding protective drum, a cutting blade and a hollow drill pipe, wherein the opening/closing blade is hinged to the bottom end of the hollow drill pipe, and is controlled to be opened or closed through a magnet; the core pile molding protective drum is arranged at the bottom of the hollow drill pipe, and is slidingly connected with the hollow drill pipe through a dowel pin; a cutting blade cutting soil body is arranged at the outer side of the core pile molding protective drum, and provides acting force for vertical sliding of the protective drum; the cutting blade is arranged outside the hollow drill pipe; double pipelines are arranged in the hollow drill pipe; a cement slurry nozzle is arranged at the bottom of the hollow drill pipe; the lower end of a cement slurry pipeline is communicated with the cement slurry nozzle, and the upper end is externally connected with a pumping device for injecting cement slurry; and the lower end of a hollow part of the hollow drill pipe is communicated with the opening/closing blade, and the upper end is connected with the pumping device for filling concrete. The drill bit can be applied to a conventional cement mixing pile machine to omit the pile machine customization cost, realizes once molding of the cast-in-place stiffening core composite pile to simplify the pile forming process, and guarantees the coaxiality of a peripheral pile and a core pile to achieve reliable pile forming quality.
Description
Technical field
The present invention relates to a kind of dual circuit drill bit for cast-in-place strength core composite pile, belong to geotechnical engineering Foundation Treatment mechanical field.
Background technology
Cement-soil stirring pile construction cost is low, construction technology is simple, but its bearing capacity compared with low, settlement after construction large, therefore its application is limited largely.Domestic for addressing this problem at present, invent and added core compound pile or composite pile, and different according to core pile material, have again polytype core compound pile or composite pile of adding, but it is very few to propose concept plant equipment that is more, that can be used for putting into practice; Cost is reasonable, reinforced soft soil ground is effective, applicability is wide and the simple plant equipment of construction technology phoenix feathers and unicorn horns especially, variously adds core compound pile or composite pile is not used widely.
Number of patent application is the construction method of extra high load bearing capacity stiff composite pile disclosed in 201510098526, its matching used plant equipment is number of patent application is the multiple jet pipe mixing pile machine of transformation disclosed in 201220315185, many conveying pipelines are set in its drill bit, powder, water, slurry can be carried by different conveying pipeline simultaneously, complete the peripheral agitation pile of cement-soil of varying strength, in peripheral pile, inner core stake is squeezed in construction again, realizes the construction of extra high load bearing capacity stiff composite pile.Although this drill bit achieves the construction of cement-soil peripheral pile, pile driving rig must be added when carrying out core pile driving construction, increase equipment cost, complicated construction technique; Cement-soil peripheral pile is separated with core stake and is constructed, and both being difficult to ensure, the stake heart is consistent, and pile quality is on the low side; The method and equipment core stake used are driving into type, very high to core stake requirement of strength, and most of core stake intensity does not obtain fully effectively utilizing in composite pile, and core pile material cost is very high, turn increases construction material cost outside construction machinery.
Summary of the invention
For existing construction technology and construction machinery Problems existing, the object of this invention is to provide a kind of dual circuit drill bit for cast-in-place strength core composite pile, can directly be installed on light water earth mixing pile machine, external cement paste and the concrete pump set use, can complete peripheral pile is cement mixing method, core stake is the cast-in-place strength core composite pile pile of cast-in-situ concrete core stake, and realizes one-shot forming.
For achieving the above object, the present invention adopts following technical scheme: a kind of dual circuit drill bit for cast-in-place strength core composite pile, is characterized in that: comprise folding blade, core forming pile casing, hollow drilling pipe, cement paste pipeline, concrete pipeline; Described folding blade is arranged on drill bit bottom, and with hollow drilling pipe bottom-hinged, folding blade is provided with magnet; Be provided with dual circuit in described hollow drilling pipe, i.e. cement paste pipeline and concrete pipeline, hollow drilling pipe arranged outside has three to cutting blade, is provided with cement paste nozzle, and is positioned at above casing bottom hollow drilling pipe; The external cement slurry pumping device in cement paste pipeline upper end, lower end is communicated with cement paste nozzle; Concrete pipeline is the hollow part of hollow drilling pipe, the external the concrete pump set in upper end, and lower end is communicated with folding blade; Described casing arranged outside has a pair cutting blade, and casing is provided with sliding tray, and hollow drilling pipe corresponding position is provided with alignment pin.
As optimization, described folding blade can be set to four, and quantity also can Reasonable adjustment, and by being rotatably connected bottom bolt and hollow drilling pipe;
As optimization, described folding blade is provided with magnet, and magnet can be permanent magnet or electromagnet, and permanent magnet is by guncreting pump pressure and the folding manually realizing blade, and electromagnet controls the folding of folding blade by controlling curent change;
As optimization, cut blade outside described hollow drilling pipe and can be set to three right, quantity also can Reasonable adjustment, and length of blade successively decreases from top to bottom successively, is convenient to creep into the soil body, realizes the repeatedly cutting of the soil body simultaneously and fully stirs.The vertical plane cutting blade and drilling rod has a certain degree, and angulation is no more than 40 °; Arc convex under cutting blade processing Cheng Wei.
Successfully achieve the one-shot forming of cast-in-place strength core composite pile, simplify construction technology, shorten the duration; Successfully achieve single drill bit and complete the peripheral agitation pile of cement-soil and the stake of cast-in-situ concrete core simultaneously, without the need to reregistration stake position, guarantee the axiality of the two, ensure that pile quality.
Relative to prior art, tool of the present invention has the following advantages:
1, the dual circuit drill bit for cast-in-place strength core composite pile can be installed on a light water earth mixing pile machine, and external cement paste and the concrete pump set use, and applicability is strong, without the need to customizing stake machine, has saved cost.
2, drill bit of the present invention achieves the one-shot forming of cast-in-place strength core composite pile first, simplifies technique, shortens the duration.
3, drill bit of the present invention successfully achieves single drill bit and completes the peripheral agitation pile of cement-soil and the stake of cast-in-situ concrete core simultaneously, without the need to reregistration stake position, guarantees the axiality of the two, ensure that pile quality.
Accompanying drawing explanation
Fig. 1 a is that a kind of dual circuit drill bit for cast-in-place strength core composite pile is putting forward the three-dimensional side view under brill state; Fig. 1 b is a kind of three-dimensional side view of dual circuit drill bit under lower brill state for cast-in-place strength core composite pile.
Fig. 2 a is that a kind of dual circuit drill bit for cast-in-place strength core composite pile is putting forward the front elevational schematic under brill state; Fig. 2 b is a kind of front elevational schematic of dual circuit drill bit under lower brill state for cast-in-place strength core composite pile.
Fig. 3 a is that a kind of dual circuit drill bit for cast-in-place strength core composite pile is putting forward the schematic top plan view under brill state; Fig. 3 b is a kind of schematic top plan view of dual circuit drill bit under lower brill state for cast-in-place strength core composite pile.
In figure: 1-folding blade, 2-magnet, 3-bolt, 4-core forming pile casing, 5-alignment pin, 6-sliding tray, 7-cut blade, 8-cut blade two, 9-cutting blade three, 10-cutting blade four, 11-hollow drilling pipe, 12-cement paste nozzle, 13-cement paste pipeline, 14-concrete pipeline.
Detailed description of the invention
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term " top ", " end ", " interior ", " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
Below in conjunction with accompanying drawing, the present invention is described in further detail:
For a dual circuit drill bit for cast-in-place strength core composite pile, comprise folding blade 1, core forming pile casing 4, hollow drilling pipe 11, cement paste pipeline 13, concrete pipeline 14;
Described folding blade 1 is arranged on drill bit bottom, and suggestion can be set to four, and by being rotatably connected bottom bolt 3 and hollow drilling pipe 11; Folding blade 1 edge is provided with magnet 2, and the N pole of magnet 2 and S pole are rationally arranged on four folding blades 1 according to two like magnetic poles repel each other, principle of opposite sex attraction, and guarantee that each folding blade 1 is in attracting state, magnet can be permanent magnet or electromagnet;
Dual circuit is provided with in described hollow drilling pipe 11, i.e. cement paste pipeline 13 and concrete pipeline 14, hollow drilling pipe 11 arranged outside has three to cutting blade 8 ~ 10 for creeping into the cutting soil body, is provided with cement paste nozzle 12, and is positioned at above casing 4 bottom hollow drilling pipe 11;
The external cement slurry pumping device in described cement paste pipeline 13 upper end, in order to carry cement paste, lower end is communicated with cement paste nozzle 12, and cement paste sprays from cement paste nozzle 12;
Described concrete pipeline 14 is the hollow part of hollow drilling pipe 11, the external the concrete pump set in upper end, and in order to delivering concrete, lower end is communicated with folding blade 1, and when folding blade 1 is opened, concrete is pressed in core stake holes by folding blade 1;
Described casing 4 arranged outside has a pair cutting blade 7, casing 4 is provided with sliding tray 6, hollow drilling pipe 11 corresponding position is provided with alignment pin 5, when drill bit turns clockwise lower brill, soil has counterclockwise to active force to cutting blade 7, under the effect of soil body power, cuts blade 7 and drives casing 4 to be moved upward to screens by sliding tray 6 along alignment pin 5, expose the folding blade 1 under closure state, for better creeping into the soil body and forming core stake stake holes; When drill bit is carried be rotated counterclockwise time, soil has clockwise direction active force to cutting blade 7, under the effect of soil body power, cutting blade 7 drives casing 4 to be moved downward to screens by sliding tray 6 along alignment pin 5, and casing lower end is overhanging, and empty cylinder part goes along with sb. to guard him folding blade 1, form the hollow circular-tube stretching out certain length, in order to auxiliary wick stake pore-forming in drilling rod lifting process, avoid guncreting random clamp-on the periphery soil body cavity, guarantee core stake pile quality.
A kind of dual circuit drill bit for cast-in-place strength core composite pile of the present invention, can be installed on light water earth mixing pile machine, be used by external cement paste and the concrete pump set; Select suitable area and align piles position, power is provided by cement-soil mixing pile machine, drill bit creeps into downwards clockwise, now soil has counterclockwise to active force cutting blade 7, under the effect of soil body power, cutting blade 7 drives casing 4 to be moved upward to alignment pin 5 along sliding tray 6 and blocks, expose the folding blade 1 under closure state, for better creeping into the soil body and forming core stake stake holes; When drill bit upwards carries brill, be rotated counterclockwise drill bit, now soil has clockwise direction active force to cutting blade 7, under the effect of soil body power, cutting blade 7 drives casing 4 to be moved downward to alignment pin 5 along sliding tray 6 and blocks, go along with sb. to guard him folding blade 1, form the hollow circular-tube stretching out certain length, in order to auxiliary wick stake pore-forming, avoid guncreting to inject periphery agitation pile cavity, guarantee core stake pile stake footpath.When creeping into downwards and upwards carrying in drill-through journey, all can open external cement paste pumping plant at any time according to reinforcing design, cement paste be pumped in cement paste pipeline 13, and sprayed by cement paste nozzle 12, cement paste and the soil body stir, until complete the peripheral agitation pile pile of cement-soil.Bore the number of times that stirs and whitewash under cement mixing method to determine according to reinforcing design, can repeatedly repeat until complete mixing pile construction on request.When promoting drilling rod after drilling to completion the last time, open external concrete pumping plant simultaneously, concrete is pumped in concrete pipe road 14.Now folding blade 1 concrete pumping pressure or by the effect of Current Control electromagnet under open, in concrete press-in core stake holes; Continue to promote drill bit, until design stake top mark is high, realizes the shaping of cast-in-situ concrete core stake, complete the bore forming of cast-in-place strength core composite pile simultaneously.
For a dual circuit drill bit for cast-in-place strength core composite pile, can be installed on light water earth mixing pile machine, external cement paste and the concrete pump set use, and applicability is strong, without the need to customizing stake machine, has saved cost; Successfully achieve the one-shot forming of cast-in-place strength core composite pile, simplify construction technology, shorten the duration; Successfully achieve single drill bit and complete cement-soil peripheral pile and the stake of cast-in-situ concrete core simultaneously, without the need to reregistration stake position, guarantee the axiality of the two, ensure that pile quality.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. for a dual circuit drill bit for cast-in-place strength core composite pile, it is characterized in that: comprise folding blade (1), core forming pile casing (4), hollow drilling pipe (11), cement paste pipeline (13), concrete pipeline (14);
Described folding blade (1) is arranged on drill bit bottom, and pass through bolted splice with hollow drilling pipe (11) bottom, blade can rotate around bolt shaft and realize folding, folding blade (1) is provided with magnet (2), for controlling the folding of blade;
Dual circuit is provided with in described hollow drilling pipe (11), i.e. cement paste pipeline (13) and concrete pipeline (14), hollow drilling pipe (11) arranged outside has three to cutting blade (8) ~ (10), hollow drilling pipe (11) bottom is provided with cement paste nozzle (12), and is positioned at casing (4) top;
The external cement slurry pumping device in cement paste pipeline (13) upper end, lower end is communicated with cement paste nozzle (12);
The hollow part that concrete pipeline (14) is hollow drilling pipe (11), the external the concrete pump set in upper end, lower end is communicated with folding blade (1);
Described core forming pile casing (4) arranged outside has a pair cutting blade (7), casing (4) sidewall is provided with sliding tray (6), hollow drilling pipe (11) corresponding position is provided with alignment pin (5).
2. a kind of dual circuit drill bit for cast-in-place strength core composite pile as claimed in claim 1, it is characterized in that: described folding blade (1) can be set to four, quantity also can Reasonable adjustment, and is rotatably connected by bolt (3) and hollow drilling pipe (11) bottom; Folding blade (1) is provided with magnet (2), the N pole of magnet (2) and S pole are above rationally arranged four folding blades (1) according to two like magnetic poles repel each other, principle of opposite sex attraction, guarantee that each folding blade (1) is in attracting state, magnet can be permanent magnet or electromagnet, permanent magnet is by guncreting pump pressure and the folding manually realizing blade (1), and electromagnet controls the folding of folding blade (1) by controlling curent change.
3. a kind of dual circuit drill bit for cast-in-place strength core composite pile as claimed in claim 1, it is characterized in that: described hollow drilling pipe (11) outside cut blade (8) ~ (10) can be set to three right, quantity also can Reasonable adjustment, length of blade successively decreases from top to bottom successively, be convenient to creep into the soil body, realize the repeatedly cutting to the soil body and fully stirring simultaneously.The vertical plane cutting blade and drilling rod has a certain degree, and angulation is no more than 40 °; Arc convex under cutting blade processing Cheng Wei.
4. a kind of dual circuit drill bit for cast-in-place strength core composite pile as claimed in claim 1, it is characterized in that: the external cement slurry pumping device in described cement paste pipeline (13) upper end, in order to carry cement paste, lower end is communicated with cement paste nozzle (12), cement paste sprays from cement paste nozzle (12), injects the stirring soil layer after cutting.
5. a kind of dual circuit drill bit for cast-in-place strength core composite pile as claimed in claim 1, it is characterized in that: the hollow part that described concrete pipeline (14) is hollow drilling pipe (11), the external the concrete pump set in upper end, in order to delivering concrete, lower end is communicated with folding blade (1), when folding blade (1) is opened, concrete is by folding blade (1) press-in core stake holes.
6. a kind of dual circuit drill bit for cast-in-place strength core composite pile as claimed in claim 1, it is characterized in that: described core forming pile casing (4) arranged outside has a pair cutting blade (7), casing (4) is provided with sliding tray (6), hollow drilling pipe (11) corresponding position is provided with alignment pin (5), when drill bit turns clockwise lower brill, soil has counterclockwise to active force cutting blade (7), under the effect of soil body power, cutting blade (7) drives casing (4) to be moved upward to screens by sliding tray (6) along alignment pin (5), expose the folding blade (1) under closure state, for better creeping into the soil body and forming core stake stake holes, when drill bit is carried be rotated counterclockwise time, soil has clockwise direction active force to cutting blade (7), under the effect of soil body power, cutting blade (7) drives casing (4) to be moved downward to screens by sliding tray (6) along alignment pin (5), casing lower end is overhanging, empty cylinder part goes along with sb. to guard him folding blade (1), form the hollow circular-tube stretching out certain length, in order to auxiliary wick stake pore-forming in drilling rod lifting process, avoid guncreting random clamp-on the periphery soil body cavity, guarantee core stake pile quality.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504529.1A CN105064330A (en) | 2015-08-17 | 2015-08-17 | Double-pipeline drill bit for cast-in-place stiffening core composite pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510504529.1A CN105064330A (en) | 2015-08-17 | 2015-08-17 | Double-pipeline drill bit for cast-in-place stiffening core composite pile |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435329A (en) * | 2017-07-25 | 2017-12-05 | 孙文 | Cement mixing pile and its construction equipment and construction method with concrete core stake |
| CN108265710A (en) * | 2018-03-07 | 2018-07-10 | 刘寅平 | A kind of grouting behind shaft or drift lining Prefabricated hollow pipe tree root pilework and construction method |
| CN108360508A (en) * | 2018-01-31 | 2018-08-03 | 浙江绿艺园林工程有限公司 | The construction method of cast-in-place concrete core cement soil stirring pile |
| CN108868590A (en) * | 2018-08-16 | 2018-11-23 | 北京城建勘测设计研究院有限责任公司 | A kind of single shaft cement mixing method drill bit |
| CN110219585A (en) * | 2019-06-10 | 2019-09-10 | 王文昭 | A kind of direct current ground auger |
| CN110306542A (en) * | 2019-06-24 | 2019-10-08 | 中冶集团武汉勘察研究院有限公司 | Inner core is the construction method of the cement concrete composite pile of high pressure water soil |
| CN110331698A (en) * | 2019-06-11 | 2019-10-15 | 徐州工程学院 | A kind of system that polyurethane formation curtain was constructed and be rapidly injected to casement |
| CN111155933A (en) * | 2020-03-11 | 2020-05-15 | 成都明杰科技有限公司 | High-pressure jet grouting pile drill bit based on road and bridge construction application |
| CN115726381A (en) * | 2022-11-23 | 2023-03-03 | 三峡大学 | Wall protection device for isolating underground water in pile hole by using magnetic mortar and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435329A (en) * | 2017-07-25 | 2017-12-05 | 孙文 | Cement mixing pile and its construction equipment and construction method with concrete core stake |
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| CN110219585A (en) * | 2019-06-10 | 2019-09-10 | 王文昭 | A kind of direct current ground auger |
| CN110331698A (en) * | 2019-06-11 | 2019-10-15 | 徐州工程学院 | A kind of system that polyurethane formation curtain was constructed and be rapidly injected to casement |
| CN110306542B (en) * | 2019-06-24 | 2023-10-10 | 中冶集团武汉勘察研究院有限公司 | Construction method of cement concrete composite pile with high-pressure cement soil as inner core |
| CN110306542A (en) * | 2019-06-24 | 2019-10-08 | 中冶集团武汉勘察研究院有限公司 | Inner core is the construction method of the cement concrete composite pile of high pressure water soil |
| CN111155933B (en) * | 2020-03-11 | 2021-11-26 | 上海渊丰地下工程技术有限公司 | High-pressure jet grouting pile drill bit based on road and bridge construction application |
| CN111155933A (en) * | 2020-03-11 | 2020-05-15 | 成都明杰科技有限公司 | High-pressure jet grouting pile drill bit based on road and bridge construction application |
| CN115726381A (en) * | 2022-11-23 | 2023-03-03 | 三峡大学 | Wall protection device for isolating underground water in pile hole by using magnetic mortar and construction method |
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Application publication date: 20151118 |