CN106703705B - Combination type drill bit suitable for high spray stirring concrete earth pile - Google Patents
Combination type drill bit suitable for high spray stirring concrete earth pile Download PDFInfo
- Publication number
- CN106703705B CN106703705B CN201611129973.0A CN201611129973A CN106703705B CN 106703705 B CN106703705 B CN 106703705B CN 201611129973 A CN201611129973 A CN 201611129973A CN 106703705 B CN106703705 B CN 106703705B
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
- E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements
- E21B10/633—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
Abstract
A kind of combination type drill bit being suitable for high spray stirring concrete earth pile, it includes in the drill body of hollow cylindrical and built-in gas circuit and slurry road, and positioned opposite on the outer wall of drill body there are two the first stirring wing and two the second stirring wings；It is located at below the second stirring wing in the outer wall lower part of drill body and is provided with second nozzle；The lower surface of apex point is provided with third venthole and third nozzle；One end far from drill body is provided with two fixed plates, slurry road hose and gas circuit hose on the first stirring wing, nozzle steering base is provided between two fixed plates, positioning bolt hole, rolling bearing mounting hole are provided in two fixed plates, nozzle steering base is in oblate column, it is equipped with mounting hole in the center of nozzle steering base both ends of the surface, protrusion, slurry hole and stomata are provided on the curved surface of nozzle steering base, shaft is fixedly installed in mounting hole, the both ends of shaft are inserted into the endoporus tight fit in rolling bearing and with rolling bearing and realize that nozzle steering base pivots.
Description
Technical field
The present invention relates to high spray stirring concrete earth pile technical field of construction in architectural engineering, and in particular to one kind being suitable for height
Spray the combination type drill bit and its application method of stirring concrete earth pile.
Background technology
Height spray stirring concrete earth pile can be not only used for reinforcing muck soil, saturation loess, the soft soil foundations such as cohesive soil, and can be with
The rigid piles such as pile pile, piling bar are used cooperatively, in composite pile.Height spray stirring concrete earth pile is applied widely with its, technique is simple
The advantages that list, low cost, is widely used in foundation and fast development.The fast of stirring concrete earth pile is sprayed with high
Speed development and application, how rapidly and efficiently, the high spray stirring concrete earth pile of completion guaranteed both quality and quantity is constructed into order to which everybody pays close attention to
Focus, and determine that a key factor of high spray stirring concrete earth pile speed of application and quality is drill bit.Therefore the development of drill bit
Increasingly cause the attention of people.Currently, the present Research of drill bit used in related pile foundation construction is as follows：
（1）Application No. is 201520780742.0 Chinese patents to disclose a kind of brill for two-tube high-pressure rotary-spray technique
Tool, it includes into slurry assembly, drilling rod, drill bit, and described into slurry assembly includes that slurry intake channel, the first high pressure are logical into slurry core pipe, air inlet
Road, the first tracheae are provided with second into slurry core pipe, the second tracheae in drilling rod, are equipped with drill bushing in drilling rod lower end, are set in drill bushing
It is equipped with three-way connection, two exit of lower end of three-way connection is respectively provided with high-pressure mortar spraying mouth, and venthole is equipped in the lower end of drill bushing.It should
Drilling tool wing without mixing, nozzle are fixed, no combination function, and whitewashing mouth is not stepped overhanging along stake diameter, are whitewashed in the cross section of stake
Uneven, mixing effect is poor.
（2）Application No. is 201520195048.2 Chinese patents to disclose a kind of drill bit for quadruple high-pressure rotary-spray,
Including bit body, core pipe, the right end of core pipe connects cutter head, is provided with stepped hole in the middle part of cutter head, fixed seat is equipped in stepped hole, Gu
Spring is installed in trepanning in the middle part of reservation, spring head is abutted with steel ball, and hole is provided in the circumferential wall of bit body and cutter head, is consolidated in hole
Surely there is pedestal, nozzle assembly is installed on pedestal.Drilling tool wing without mixing, nozzle are fixed, no combination function, and whitewashing mouth is not in rank
Scalariform is overhanging along stake diameter, whitewashes in the cross section of stake uneven, mixing effect is poor.
（3）Application No. is 201520499770.5 Chinese patents to disclose a kind of drilling bit, including drill body
And drill bit, inner and outer tubes are provided in drill body, wherein inner tube extends in drill bit, sets up separately on the circumferencial direction of drill body
To be equipped with angle with horizontal plane be -20 ° of vertical view nozzle, and angle with horizontal plane is 20 ° and looks up nozzle and horizontal nozzle.The drill bit
Wing without mixing, nozzle are fixed, no combination function, are overlooked nozzle, are looked up nozzle and horizontal nozzle is not stepped overhanging along stake diameter,
Whitewashing is uneven in the cross section of stake, and mixing effect is poor.
（4）Application No. is the Chinese patents of 201320862022.X to disclose one kind for major diameter compound section soil cement
The churning of stake, the compound construction drill of stirring, including mixing pile drilling rod, the head of the mixing pile drilling rod are equipped with mixing pile drill bit,
Mixing pile drill bit is equipped with first jet, and mixing pile drilling rod is equipped with second nozzle.The drill bit is fixed without combination function, nozzle,
Bit central can not be mutually linked without lower nozzle, whitewashing range along stake diameter, may cause to whitewash in the cross section of stake uneven.
（5）Application No. is 200520032327.3 Chinese patents to disclose a kind of drilling bit, including drill bit
Body, gunniting hole, set on the bit body above gunniting hole bore there are two symmetrical brill leaf the upper and lower surface of leaf and horizontal plane at
One angle, the distance bored between leaf both ends match with stake diameter, and the angle of the upper and lower surface and horizontal plane of boring leaf is 15 °.The drill bit
Without combination function, nozzle is fixed, and gunniting hole is not stepped overhanging along stake diameter, is whitewashed in the cross section of stake uneven.
（6）A kind of spray with stirring injecting treatment based devices are disclosed application No. is 95216200.8 Chinese patent, on drill bit
2 long nozzles of high pressure are set；2 stirring blades, vacuum side of blade are evenly distributed with slurry outlet（It is horizontal）, can also on drill bit vertically to
Under.Using TY-201 types air deflector, Grouting Pipe, bar diameter is not more than 75mm.The drill bit nozzle is fixed, no combination function, outside nozzle
Elongation can not adjust.It is 0.28m/min to survey comprehensive rate of penetration in Jinan City Tianqiao District building site, and rate of penetration is slower,
Boring and coring core sample locally presss from both sides mud.
（7）It discloses application No. is 00260160.5 Chinese patent and a kind of can be completed at the same time drilling, injection, agitating function
Stake construction equipment.At least 3 pressure pipes of setting conveying gas, water and slurries in drilling rod.Drilling rod bottom end is set successively from the bottom to top
Set drill bit, injector, blender.The drill bit nozzle is fixed, and no combination function, nozzle extension can not adjust.
（8）Application No. is 03130665.9 Chinese patents to disclose a kind of cement earth pile with injection and agitating function
Engineering method, target drill.Agitating shaft nozzle, spray pressure 1MPa ~ 5MPa is arranged in agitating shaft lower end, and blade is arranged in stirring blade outer rim
Nozzle, spray pressure 3MPa ~ 15MPa, between stirring blade or the top setting traditional method of indicating the pronunciation of a Chinese character cuts blade.The drill bit nozzle is fixed, nothing
Combination function, cannot adjust drill bit form, bad adaptability according to formation condition, and nozzle extension can not adjust.
（9）Application No. is 200710013698.0 Chinese patents to disclose one kind with jet agitation pipe（Outer end is arranged
Nozzle）, stirring rod drilling tool form, stirring rod is above jet agitation bar.Drill bit is arranged in bottom end.Using double tube method, once
Pile-formation process is stirred in whole spray on one.The drilling tool nozzle is fixed, no combination function, cannot adjust drill bit form according to formation condition,
Bad adaptability, nozzle extension can not adjust.
（10）Application No. is 200910089553.8 Chinese patents to disclose a kind of water, slurry high-pressure injection twice, additional
The drilling tool of stirring blade stirring.On-bladed drilling rod or long screw drill rod can be used in drilling rod.Drill bit bottom and side are welded with paddle
Piece, drill bit side upper layer and lower layer nozzle, upper layer water spray, lower layer's whitewashing, nozzle are arranged using K, X ,-type.The drilling tool nozzle is solid
Fixed, no combination function cannot adjust drill bit form according to formation condition, and bad adaptability, nozzle is not stepped overhanging along stake diameter,
Whitewashing is uneven in the cross section of stake.
The above pile foundation construction drill bit of comprehensive analysis, is primarily present following deficiency：（1）Drilling tool nozzle is fixed, spray angle
Non-adjustable, no combination function, ground adaptability is poor；（2）Stirring wing cannot be adjusted according to stake diameter and nozzle extension, pile are straight
Diameter cannot be guaranteed；（3）Bit nozzle is not ladder-like arranged along stake diameter, whitewashes in pile body cross section uneven, in fact it could happen that folder
Mud phenomenon；（4）It is not provided with manhole, drill bit maintenance and inspection are inconvenient.
Invention content
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of for architectural engineering height spray stirring water
The drill bit of soil pile driving construction, specific offer one kind is simple in structure, whitewashing stirs evenly, stratum is applied widely, easy to repair, easy
In the combination type drill bit for being suitable for high spray stirring concrete earth pile of installation.Another object of the present invention is to provide a kind of be applicable in
In the combination type drill bit application method of high spray stirring concrete earth pile.
In order to achieve the above object, the present invention uses following technical scheme：It is a kind of to spray stirring concrete earth pile suitable for height
Combination type drill bit, it includes the phase on the outer wall of drill body in the drill body of hollow cylindrical and built-in gas circuit and slurry road
To arrangement there are two the first stirring wing and two the second stirring wings, the first stirring wing is located at the top of the second stirring wing, and first stirs
The projection of wing and the second stirring wing in the horizontal plane is mixed to be mutually perpendicular to；It is located at the second stirring wing in the outer wall lower part of drill body
Lower section is provided with second nozzle, it is characterized in that drilling rod bolt hole, air admission hole and slurry-feeding hole are provided at the top of drill body,
The first stirring wing mounting plate and the second stirring wing mounting plate are provided on the outer wall of drill body, in the first stirring wing mounting plate and
Bolt hole is both provided on second stirring wing mounting plate, the first and second stirring wing is connect by bolt with drill body, is stirred first
The fast slotting female connector mixed the outer steel pipe of second for being provided in the middle part of wing mounting plate and being connected to air admission hole and be connected to slurry-feeding hole, the
Two outer outer diameter of steel pipes are more than slotting female connector soon, and the second outer steel pipe and fast female connector of inserting are concentric, and fast female connector of inserting is longer than the
Two outer steel pipes；It is located at below the second stirring wing mounting plate in bit-body face and is provided with the second venthole and second nozzle peace
Fill hole；
Drill body bottom is provided with apex point card slot and apex point bolt hole, apex point, apex point are provided in apex point card slot
It is fixed on drill body by apex point bolt.
The lower surface of apex point is provided with third venthole and third nozzle；
It is provided with close to one end of drill body on the first stirring wing and inserts pin end and the first outer steel pipe soon, outside first
Silk pipe diameter is more than slotting pin end outer diameter soon, and slotting pin end and the first outer steel pipe are concentric soon, and inserts pin end soon and be longer than the
One outer steel pipe.
One end far from drill body is provided with two fixed plates, slurry road hose and gas circuit hose on the first stirring wing,
It is provided with nozzle steering base between two fixed plates, positioning bolt hole, rolling bearing installation are provided in two fixed plates
Rolling bearing is fixedly mounted in rolling bearing mounting hole in hole, and rolling bearing is fixedly mounted in rolling bearing mounting hole, fast to insert
Pin end is connected to by starching road hose with the slurry hole on nozzle steering base, and the first outer steel pipe is turned to by gas circuit hose and nozzle
Stomata connection on seat.
Nozzle steering base is in oblate column, mounting hole is equipped in the center of nozzle steering base both ends of the surface, in nozzle steering base
Both ends of the surface on by proximal edge be additionally provided with several location holes, it is gentle that protrusion, slurry hole are provided on the curved surface of nozzle steering base
Hole is provided with first jet mounting hole and the first venthole in protrusion, is fixedly installed shaft in mounting hole, and the two of shaft
End is inserted into the endoporus tight fit in rolling bearing and with rolling bearing and realizes that nozzle steering base pivots.Hole is starched with first jet to pacify
The connection of dress hole, stomata are connected to the first venthole.
It is 5 or 7 to position hole number, and any location hole and rear insertion positioning bolt in positioning bolt hole coaxial pair are solid
It is fixed, different location holes and positioning bolt hole centering are converted, it can be achieved that between -45 ° on the basis of horizontal line~45 ° of first jet
Variation, keep the injection direction of first jet adjustable.When drill bit is crept into, first jet can be adjusted to spray downwards, make drilling more
It is easy to add；When multiple spray is stirred again, first jet can be adjusted to spray upwards, keep stirring more uniform；The case where being changed without stirring wing
Under, first jet can be adjusted to horizontal-jet, make expanded diameter bigger.
The drill body is formed by Q235 or Q345 steel processing and fabricatings, diameter 22cm~35cm, and wall thickness 2.0cm~
3.0cm。
First stirring wing and the second stirring wing are blade stirrer wing, different sizes can be selected to stir according to different stake diameters
Wing.First stirring wing and the second stirring wing are formed by the steel plate processing and fabricating that plate thickness is 30mm~50mm, they and drill body
The vertical angle of central axes is 20 °~60 °, is spatially divided upper and lower two layers, interlamellar spacing 30cm~50cm, adjacent two layers stirring
Wing can be connect by stirring wing bolt with drill body in 90 ° of distributions.First stirring wing connect with drill body after drill bit outside
Diameter is smaller 0cm~10cm than cement earth pile diameter, and the outside diameter after the second stirring wing is connect with drill body is more straight than cement earth pile
Small 10cm~the 20cm of diameter, value is determined by soil property, is got the small value when soil property is harder, is taken large values when soil property is softer.First stirring wing
Ladder reduces the outer diameter of outer diameter, the outer diameter of the second stirring wing and drill body from top to bottom, reduces drilling resistance.For cohesive soil
Blade stirrer wing can be used, rake teeth type stirring wing can be used for powder, chiltern class soil.
The lower part of the outer wall of drill body is provided with tapped manhole, manhole cover is equipped with external screw thread, energy
It is enough that manhole cover is closely linked together with manhole by the internal thread on manhole.When drill bit whitewashing or jet occur
When failure, manhole cover can be opened, drill body internal duct is overhauled by manhole.
Steel pipe and the first outer fastener for connection outside second, insert female connector and are connect with fast pin end of inserting, soon wherein first will be interior
Internal thread outer-hexagonal bolt is screwed to by silk outer-hexagonal bolt by screw thread and the first outer steel pipe or the second outer fastener for connection
Bottom makes to insert female connector soon or slotting pin end protrudes from internal thread outer-hexagonal bolt soon, secondly will insert female connector and slotting pin end soon soon
Quick grafting, last unscrewed internal thread outer-hexagonal bolt, make the first outer steel pipe with second outside steel pipe with internal thread outer-hexagonal spiral shell
Bolt is tightly connected.
The first jet mounting hole, second nozzle mounting hole, third nozzle mounting hole medial surface have internal thread.It is described
First jet, second nozzle and third nozzle diameter be 1.5mm~3.5mm, each nozzle interlaced arrangement passes through screw thread and first
Nozzle mounting hole, second nozzle mounting hole are connected with third nozzle mounting hole, and floor projection is equivalent to concentric structure, slurries
Spray regime is mutually linked, and covers entire pile body cross section.First jet, second nozzle and third nozzle by pipeline with into slurry
Hole is connected to, and wherein first jet is fixed on the first stirring wing, can be changed its extension by replacing the first stirring wing, be fitted
Answer piles with different diameter pile demand.
First venthole is looped around around first jet.Second venthole is looped around around second nozzle.Third
Venthole is looped around around third nozzle.
A diameter of 10cm~the 13cm of manhole, is located at drill body lower part, and medial surface has internal thread.
The apex point can be combined by apex point card slot with drill body, is fixedly connected by apex point bolt, be bored
Sharp bottom side length 22cm~35cm, high 20cm~30cm, thick 20mm~30mm have two kinds of structure shapes of triangular pyramidal and double triangular pyramidals
Formula, triangular pyramidal apex point are suitable for cohesive soil, and double triangular pyramidal apex points are suitable for aleuritic texture class soil.Apex point is by high-strength wearable metal
Processing and fabricating forms.
The basic structure of first stirring wing and the second stirring wing is all made of rake teeth type structure, and the first stirring wing includes in one
Empty and lateral arrangement center rod iron is disposed with several longitudinal long steel bars on the rod iron of center, and the middle part of longitudinal long steel bar is in
Heart rod iron intersects vertically, and longitudinal long steel bar is provided at both ends with cone point, is arranged on outermost one longitudinal long steel bar
There are two laterally short rod iron, lateral short rod iron one end links together with longitudinal long steel bar, and the other end is provided with cone point,
It is laterally provided with the longitudinal direction short rod iron parallel with longitudinal long steel bar on short rod iron, two pieces are provided between two short rod irons of transverse direction
Fixed plate, is provided with nozzle steering base between two fixed plates, and positioning bolt hole, the axis of rolling are provided in two fixed plates
Mounting hole, slurry road hose and gas circuit hose are held, rolling bearing is fixedly mounted in rolling bearing mounting hole, slotting pin end passes through soon
Slurry road hose is connected to the slurry hole on nozzle steering base, and the first outer steel pipe passes through the stomata on gas circuit hose and nozzle steering base
Connection.
Nozzle steering base is in oblate column, mounting hole is equipped in the center of nozzle steering base both ends of the surface, in nozzle steering base
Both ends of the surface on by proximal edge be additionally provided with several location holes, it is gentle that protrusion, slurry hole are provided on the curved surface of nozzle steering base
Hole is provided with first jet mounting hole and the first venthole in protrusion, is fixedly installed shaft in mounting hole, and the two of shaft
End is inserted into the endoporus tight fit in rolling bearing and with rolling bearing and realizes that nozzle steering base pivots.Hole is starched with first jet to pacify
The connection of dress hole, stomata are connected to the first venthole.
Center rod iron, longitudinal long steel bar, longitudinal short rod iron and laterally short rod iron are by the rod iron of a diameter of 30mm~50mm
Processing and fabricating forms；
Using double triangular pyramidal apex points, it is made by high-strength wearable intermetallic composite coating.Furthermore it is possible to by blade stirrer
It is different that wing, rake teeth type stirring wing and triangular pyramidal apex point, double triangular pyramidal apex point permutation and combination from drill body group are filled with adaptation
Stratum construction demand.
The application method of combination type drill bit suitable for high spray stirring concrete earth pile, it is characterized in that including the following steps：
（1）Determine bit diameter according to design document, if having connect with drill body after the stirring wing that meets the requirements of diameter,
Then directly select.If stirring wing alternative without suitable dimension stirring wing, that processing and fabricating is met the requirements, being not necessarily to will be entire
Drill bit processing and fabricating again.
（2）Judge the soft or hard degree in local stratum according to exploration report.If stratum is softer, first jet can be adjusted to upward
Injection；If stratum is neither too hard, nor too soft, first jet can be adjusted to horizontal-jet；If stratum is harder, first jet can be adjusted to
Injection downwards.
（3）Drilling rod and drill body are bolted together, and connect the equipment such as grouting pump, air compressor machine,
Test running is carried out on vacant lot, checks each piping connection sealing situation, it is ensured that after spillage gas leakage, formally crept on stake position
Sink.
（4）Nozzle spray direction can be adjusted flexibly according to practical drilling effect.If first jet sprays downwards, expanded diameter
When being unsatisfactory for requiring, then nozzle is adjusted to horizontal-jet；If first jet horizontal-jet or upwards injection, drilling are sunk difficult
When, then nozzle is adjusted to spray downwards.
The advantageous effect of this programme is：1. original high spray stirring concrete earth pile driving construction drill bit（Application No. is
95216200.8 Chinese patent）It is big to creep into resistance, low construction efficiency, maintenance and inconvenient maintenance, comprehensive rate of penetration are
The drill bit synthesis rate of penetration of 0.28m/min, the application are 0.76m/min, and efficiency improves nearly three times；2. drill bit first jet angle
It spends adjustable, the harder region emphasis in stratum can be sprayed；3. drill bit tapered arrangement on the whole, ladder reduces outer diameter from top to bottom,
Reduce drilling resistance, improves construction efficiency；4. each layer of stirring wing and nozzle interlaced arrangement, stirring wing, injection stream are stirred together for, stir
It mixes uniformly；5. drill bit is Demountable combined-type, ground adaptability is strong, maintenance is convenient；6. drill bit application method simplicity, science, conjunction
Reason.
Description of the drawings
Fig. 1 is the combination type drill bit structural schematic diagram for being suitable for high spray stirring concrete earth pile.Fig. 2 is the right view of Fig. 1.Figure
3 be the upward view of Fig. 2.Fig. 4 is the first stirring wing structural schematic diagram of the combination type drill bit for being suitable for high spray stirring concrete earth pile.
Fig. 5 is the right view of Fig. 4.
Fig. 6 is the dimensional structure diagram of drill body；Fig. 7 is the upward view of Fig. 6.
Fig. 8 is the structural schematic diagram of nozzle steering gear；Fig. 9 is the rearview of Fig. 8.
Figure 10 is structural schematic diagram when nozzle steering gear is in horizontal-jet state.
Figure 11 is rake teeth type drill bit structure schematic diagram.
Figure 12 is the connection diagram of vane type drill bit and drilling rod.Figure 13 is the connection signal of rake teeth type drill bit and drilling rod
Figure.
Figure 14 is the apex point structural schematic diagram in triangular pyramidal.Figure 15 is the apex point structural schematic diagram in double triangular pyramidals.
Figure 16 is the whitewashing range schematic diagram of three nozzles of the invention.
In figure, 1- drill bodies；The first stirring wings of 2-；The second stirring wings of 3-；4- second nozzles；5- manhole covers；6- is fixed
Position bolt；7- first jets；8- apex points；9- stirring wing bolts；The first ventholes of 10-；11- apex point bolts；12- rolling bearings；
13- third ventholes；14- third nozzles；15- inserts pin end soon；The outer steel pipes of 16- first；17- positioning bolt holes；18- is rolled
Bearing mounting hole；19- gas circuit hoses；20- starches road hose；21- drilling rod bolts hole；22- air admission holes；23- slurry-feeding holes；24- second
Outer silk steel pipe；25- inserts female connector soon；26- the second stirring wing mounting plates；27- manholes；The second ventholes of 28-；29- second sprays
Mouth mounting hole；30- the first stirring wing mounting plates；31- apex point bolts hole；32- apex point card slots；33- third nozzle mounting holes；34-
Location hole；35- mounting holes；36- first jet mounting holes；37- stomatas；38- starches hole；39- nozzle steering bases；40- shafts；41-
Center rod iron；The longitudinal directions 42- long steel bar；The lateral short rod irons of 43-；The longitudinal short rod irons of 44-；45- fixed plates；46- drilling rods；47- bolts；
48- protrusions；49- diameters；50- third nozzles whitewashing range；51- second nozzles whitewashing range；52- first jets whitewashing range.
Specific implementation mode
This programme is described further below in conjunction with the accompanying drawings.
Embodiment 1：As shown in Figure 1, 2, 3, a kind of combination type drill bit being suitable for high spray stirring concrete earth pile, it includes being in
The drill body 1 of hollow cylindrical and built-in gas circuit and slurry road, it is positioned opposite on the outer wall of drill body 1 to be stirred there are two first
Wing 2 and two the second stirring wings 3 are mixed, the first stirring wing 2 is located at the top of the second stirring wing 3, the stirring of the first stirring wing 2 and second
The projection of wing 3 in the horizontal plane is mutually perpendicular to；The lower section for being located at the second stirring wing 3 in the outer wall lower part of drill body 1 is provided with
Second nozzle 4.
As shown in fig. 6, being provided with drilling rod bolt hole 21, air admission hole 22 and slurry-feeding hole 23 at the top of drill body 1, boring
It is provided with the first stirring wing mounting plate 30 and the second stirring wing mounting plate 26 on the outer wall of head ontology 1, is installed in the first stirring wing
It is both provided with bolt hole, the first and second stirring wing on plate 30 and the second stirring wing mounting plate 26（2,3）Pass through bolt and drill body
1 connection, the middle part of the first stirring wing mounting plate 30 be provided be connected to air admission hole 22 second outside steel pipe 24 and with into slurry
Hole 23 be connected to it is fast insert female connector 25, the second 24 outer diameter of outer steel pipe is more than slotting female connector 25 soon, the second outer steel pipe 24 with soon
Insert female connector 25 with one heart, and slotting female connector 25 is longer than the second outer steel pipe 24 soon；It is located at the second stirring wing on 1 surface of drill body
26 lower section of mounting plate is provided with the second venthole 28 and second nozzle mounting hole 29.
1 bottom of drill body is provided with apex point card slot 32 and apex point bolt hole 31, brill is provided in apex point card slot 32
Point 8, apex point 8 is fixed on by apex point bolt 11 on drill body 1.
As shown in fig. 7, being provided with third venthole 13 and third nozzle 14 in the lower surface of apex point；
As shown in Fig. 4,5,9, one end of drill body 1 is provided with 15 He of slotting pin end soon on the first stirring wing 2
First outer steel pipe 16, the first 16 internal diameter of outer steel pipe are more than 15 outer diameter of slotting pin end soon, soon 15 and first outer silk of slotting pin end
Steel pipe 16 is concentric, and slotting pin end 15 is longer than the first outer steel pipe 16 soon.
One end far from drill body 1 on the first stirring wing 2 is provided with two fixed plates 45, slurry road hose 20 and gas circuit
Hose 19 is provided with nozzle steering base 39 between two fixed plates 45, and positioning bolt hole is provided in two fixed plates 45
17, rolling bearing 12 is fixedly mounted in rolling bearing mounting hole 18 in rolling bearing mounting hole 18, and slotting pin end 15 passes through slurry soon
Road hose 20 is connected to the slurry hole 38 on nozzle steering base 39, and the first outer steel pipe 16 passes through gas circuit hose 19 and nozzle steering base
Stomata 37 on 39 is connected to.
As shown in Figure 8,9, 10, nozzle steering base 39 is in oblate column, is equipped in the center of 39 both ends of the surface of nozzle steering base
Mounting hole 35 is additionally provided with several location holes 34 in the both ends of the surface of nozzle steering base 39 by proximal edge, in nozzle steering base 39
Curved surface on be provided with protrusion 48, slurry hole 38 and stomata 37, being provided with first jet mounting hole 36 and first in protrusion 48 goes out
Stomata 10 is fixedly installed shaft 40 in mounting hole 35, and the both ends of shaft 40 are inserted into rolling bearing 12 and and the axis of rolling
The endoporus tight fit for holding 12 realizes that nozzle steering base 39 pivots.Slurry hole 38 is connected to first jet mounting hole 36, stomata 37 and the
One venthole 10 is connected to.
34 quantity of location hole is 5 or 7, and any location hole 34 is inserted into positioning spiral shell with rear in 17 coaxial pair of positioning bolt hole
Bolt 6 is fixed, convert different location holes 34 and 17 centering of positioning bolt hole, it can be achieved that first jet 7 on the basis of horizontal line-
Variation between 45 °~45 °, keeps the injection direction of first jet 7 adjustable.When drill bit is crept into, first jet 7 can be adjusted to downwards
Injection, makes drilling be more prone to；When multiple spray is stirred again, first jet 7 can be adjusted to spray upwards, keep stirring more uniform；Not more
In the case of changing stirring wing, first jet 7 can be adjusted to horizontal-jet, make expanded diameter bigger.
As shown in Figure 6,7, the drill body 1 is formed by Q235 or Q345 steel processing and fabricatings, and diameter 22cm~
35cm, wall thickness 2.0cm~3.0cm.
As shown in Figure 1, 2, 3, the first stirring wing 2 and the second stirring wing 3 are blade stirrer wing, can be according to different stake diameters
Select different size stirring wings.First stirring wing 2 and the second stirring wing 3 by plate thickness for the steel plate processing and fabricating of 30mm~50mm and
At, their vertical angles with 1 central axes of drill body are 20 °~60 °, are spatially divided upper and lower two layers, interlamellar spacing 30cm~
50cm, adjacent two layers stirring wing can be connect by stirring wing bolt 9 with drill body 1 in 90 ° of distributions.First stirring wing 2 and brill
Outside diameter after head ontology 1 connects is smaller 0cm~10cm than cement earth pile diameter, after the second stirring wing 3 is connect with drill body 1
Outside diameter it is smaller 10cm~20cm than cement earth pile diameter, value is determined by soil property, is got the small value when soil property is harder, and soil property is softer
When take large values.Ladder reduces the outer diameter of the outer diameter of first stirring wing, the outer diameter of the second stirring wing and drill body from top to bottom, subtracts
Small drilling resistance.Blade stirrer wing can be used for cohesive soil, rake teeth type stirring wing can be used for powder, chiltern class soil.
As shown in Figure 2,6, the lower part of the outer wall of drill body is provided with tapped manhole 27, manhole cover 5
It is equipped with external screw thread, manhole cover 5 and manhole 27 can closely be linked together by the internal thread on manhole 27.
When drill bit whitewashing or jet break down when, manhole cover 5 can be opened, by manhole 27 to 1 internal duct of drill body into
Row maintenance.
As shown in Fig. 4,6,7, the described second outer steel pipe 24 connect with the first outer steel pipe 16, insert soon female connector 25 and
Slotting pin end 15 connects soon, wherein internal thread outer-hexagonal bolt is first passed through screw thread and the first outer steel pipe or the second outer steel pipe connecting
It connects, and internal thread outer-hexagonal bolt is screwed to bottom, make to insert female connector soon or slotting pin end protrudes from internal thread outer-hexagonal bolt soon, secondly
Female connector 25 and the 15 quick grafting of slotting pin end, last unscrewed internal thread outer-hexagonal bolt soon will be inserted soon, make the first outer steel pipe 16
It is connect with internal thread outer-hexagonal bolt seal with the second outer steel pipe 24.
First jet mounting hole 36, second nozzle mounting hole 29,33 inside of third nozzle mounting hole as described in Fig. 6,7,8
There is internal thread in face.As shown in Fig. 1,3,6,7,8,14 a diameter of 1.5mm of the first jet 7, second nozzle 4 and third nozzle
~3.5mm, each nozzle interlaced arrangement pass through screw thread and first jet mounting hole 36, second nozzle mounting hole 29 and third nozzle
Mounting hole 33 connects, and floor projection is equivalent to concentric structure, and slurries spray regime is mutually linked, and it is transversal to cover entire pile body
Face.First jet 7, second nozzle 4 and third nozzle 14 are connected to by pipeline with slurry-feeding hole 23, and wherein first jet 7 is fixed on
On first stirring wing 2, its extension can be changed by replacing the first stirring wing 2, adapt to piles with different diameter pile demand.
As shown in figs. 1 and 8, first venthole 10 is looped around around first jet 7.As a shown in Figure 6, second goes out
Stomata 28 is looped around around second nozzle 4.As shown in figure 3, third venthole 13 is looped around around third nozzle 14.
As a shown in Figure 6,27 a diameter of 10cm~13cm of manhole, is located at 1 lower part of drill body, and medial surface has interior spiral shell
Line.
As shown in Fig. 1,2,7, the apex point 8 can be combined by apex point card slot 32 and drill body 1, by boring
Sharp bolt 11 is fixedly connected, apex point 8 bottom side length 22cm~35cm, high 20cm~30cm, thick 20mm~30mm, have triangular pyramidal and
Two kinds of structure types of double triangular pyramidals, triangular pyramidal apex point are suitable for cohesive soil, and double triangular pyramidal apex points are suitable for aleuritic texture class
Soil.Apex point 8 is made by high-strength wearable intermetallic composite coating.
Embodiment 2：The present embodiment place same as Example 1 repeats no more, the difference is that：
As shown in Figure 11,13,15, the basic structure of the first stirring wing 2 and the second stirring wing 3 is all made of rake teeth type structure,
First stirring wing 2 includes hollow and lateral arrangement a center rod iron 41, is disposed on center rod iron 41 several longitudinal long
Rod iron 42, middle part and the center rod iron 41 of longitudinal long steel bar 42 intersect vertically, and longitudinal long steel bar 42 is provided at both ends with conical points
It holds, there are two laterally short rod iron 43, lateral short 43 one end of rod iron and longitudinal directions for setting on outermost one longitudinal long steel bar 42
Long steel bar 42 links together, and the other end is provided with cone point, is provided on laterally short rod iron 43 and longitudinal long steel bar 42
The short rod iron 44 in parallel longitudinal direction is provided with two fixed plates 45 between the short rod iron of two transverse directions 43, two fixed plates 45 it
Between be provided with nozzle steering base 39, be provided in two fixed plates 45 positioning bolt hole 17, rolling bearing mounting hole 18, slurry road
Rolling bearing 12 is fixedly mounted in hose 20 and gas circuit hose 19 in rolling bearing mounting hole 18, and slotting pin end 15 passes through slurry soon
Road hose is connected to the slurry hole 38 on nozzle steering base 39, and the first outer steel pipe 16 passes through gas circuit hose 19 and nozzle steering base 39
On stomata 37 be connected to.
Nozzle steering base 39 is in oblate column, mounting hole 35 is equipped in the center of 39 both ends of the surface of nozzle steering base, in nozzle
Several location holes 34 are additionally provided with by proximal edge in the both ends of the surface of steering base 39, are provided on the curved surface of nozzle steering base 39 convex
It rises, starch hole 38 and stomata 37, first jet mounting hole 36 and the first venthole 10 are provided in protrusion, it is solid in mounting hole 35
Surely it is provided with shaft 40, the both ends of shaft 40 are inserted into the endoporus tight fit in rolling bearing 12 and with rolling bearing 12 and realize spray
Mouth steering base 39 pivots.Hole 38 is connected to slurry with first jet mounting hole 36, stomata 37 is connected to the first venthole 10.
Center rod iron 41, longitudinal long steel bar 42, longitudinal short rod iron 44 and laterally short rod iron 43 by a diameter of 30mm~
The rod iron processing and fabricating of 50mm forms；
Using double triangular pyramidal apex points, it is made by high-strength wearable intermetallic composite coating.Furthermore it is possible to by blade stirrer
Wing, rake teeth type stirring wing and triangular pyramidal apex point, that 1 group of double triangular pyramidal apex point permutation and combination and drill body is filled with adaptation is different
Stratum construction demand.
Embodiment 3：
A kind of application method for the combination type drill bit being suitable for high spray stirring concrete earth pile, it includes the following steps：
（1）Determine bit diameter according to design document, if having connect with drill body 1 after the stirring that meets the requirements of diameter
Wing is then directly selected.If stirring wing alternative without suitable dimension stirring wing, that processing and fabricating is met the requirements, being not necessarily to will
Entire drill bit processing and fabricating again.
（2）Judge the soft or hard degree in local stratum according to exploration report.If stratum is softer, first jet 7 can be adjusted to
Upper injection；If stratum is neither too hard, nor too soft, first jet 7 can be adjusted to horizontal-jet；If stratum is harder, first jet 7 can be adjusted
It is whole to be sprayed to be downward.
（3）Drilling rod 46 and drill body are linked together by bolt 47, and connect grouting pump, air compressor machine etc. and is set
It is standby, test running is carried out on vacant lot, checks each piping connection sealing situation, it is ensured that after spillage gas leakage, carried out just on stake position
Formula drilling is sunk.
（4）Nozzle spray direction can be adjusted flexibly according to practical drilling effect.If first jet sprays downwards, expanded diameter
When being unsatisfactory for requiring, then nozzle is adjusted to horizontal-jet；If first jet horizontal-jet or upwards injection, drilling are sunk difficult
When, then nozzle is adjusted to spray downwards.
In practical application, when nozzle sprays downwards, rate of penetration is existing drill bit（In 95216200.8
State's patent）2.8 times；When nozzle sprays upwards, Soil-cement is more uniform, the more existing brill of low strain integrity testing pile quality
The cement earth pile of head construction is more preferable, and the uniaxial compressive strength of boring and coring core sample is existing drill bit construction cement earth pile core sample
1.4 again；When nozzle level sprays, expanded diameter sprays about 1.2 times of raising compared with nozzle upward or downward.Due to using combined type
Construction, drill bit repair speed and improve 3 times than existing drill bit.
Claims (8)
1. a kind of combination type drill bit being suitable for high spray stirring concrete earth pile, it includes in hollow cylindrical and built-in gas circuit and slurry
The drill body on road, it is positioned opposite there are two the first stirring wing and two the second stirring wings on the outer wall of drill body, first
Stirring wing is located at the top of the second stirring wing, and the projection of the first stirring wing and the second stirring wing in the horizontal plane is mutually perpendicular to；
The outer wall lower part of drill body, which is located at below the second stirring wing, is provided with second nozzle, it is characterized in that at the top of drill body
It is provided with drilling rod bolt hole, air admission hole and slurry-feeding hole, the first stirring wing mounting plate and are provided on the outer wall of drill body
Two stirring wing mounting plates are both provided with bolt hole on the first stirring wing mounting plate and the second stirring wing mounting plate, and first and second stirs
It mixes wing to connect with drill body by bolt, be provided with outside second be connected to air admission hole in the middle part of the first stirring wing mounting plate
Silk steel pipe and be connected to slurry-feeding hole it is fast insert female connector, the second outer outer diameter of steel pipes is more than inserts female connector soon, steel pipe outside second
It is concentric with fast female connector of inserting, and slotting female connector is longer than the second outer steel pipe soon；It is located at the second stirring wing peace in bit-body face
It is provided with the second venthole and second nozzle mounting hole below loading board；Drill body bottom is provided with apex point card slot and apex point spiral shell
Keyhole, is provided with apex point in apex point card slot, and apex point is fixed on by apex point bolt on drill body；It is set in the lower surface of apex point
It is equipped with third venthole and third nozzle；One end of drill body is provided with slotting pin end soon and the on the first stirring wing
One outer steel pipe, the first outer pipe diameter are more than slotting pin end outer diameter soon, and slotting pin end and the first outer steel pipe are concentric soon, and
Slotting pin end is longer than the first outer steel pipe soon；
One end far from drill body is provided with two fixed plates, slurry road hose and gas circuit hose on the first stirring wing, two
It is provided with nozzle steering base between block fixed plate, positioning bolt hole, rolling bearing mounting hole are provided in two fixed plates,
Rolling bearing is fixedly mounted in rolling bearing mounting hole, fast slotting pin end is by starching road hose and the slurry Kong Lian on nozzle steering base
Logical, the first outer steel pipe is connected to by gas circuit hose with the stomata on nozzle steering base；Nozzle steering base is in oblate column, is being sprayed
The center of mouth steering base both ends of the surface is equipped with mounting hole, and several positioning are additionally provided with by proximal edge in the both ends of the surface of nozzle steering base
Hole is provided with protrusion, slurry hole and stomata on the curved surface of nozzle steering base, and first jet mounting hole and the are provided in protrusion
One venthole, is fixedly installed shaft in mounting hole, the both ends of shaft be inserted into rolling bearing and in rolling bearing
Hole tight fit realizes that nozzle steering base pivots；Hole is connected to slurry with first jet mounting hole, stomata is connected to the first venthole.
2. the combination type drill bit according to claim 1 for being suitable for high spray stirring concrete earth pile, it is characterized in that positioning hole count
Amount is 5 or 7.
3. the combination type drill bit according to claim 1 for being suitable for high spray stirring concrete earth pile, it is characterized in that the brill
Head ontology is formed by Q235 or Q345 steel processing and fabricatings, diameter 22cm~35cm, wall thickness 2.0cm~3.0cm.
4. the combination type drill bit according to claim 1 for being suitable for high spray stirring concrete earth pile, it is characterized in that the first stirring
Wing and the second stirring wing are that blade stirrer wing, the first stirring wing and the second stirring wing are added by the steel plate that plate thickness is 30mm~50mm
Work is made, spacing 30cm~50cm, the first stirring wing connect with drill body after outside diameter than cement earth pile diameter
Small 0cm~10cm, the outside diameter after the second stirring wing is connect with drill body are smaller 10cm~20cm than cement earth pile diameter.
5. the combination type drill bit according to claim 1 for being suitable for high spray stirring concrete earth pile, it is characterized in that in drill bit sheet
The lower part of the outer wall of body is provided with tapped manhole, and manhole cover is equipped with external screw thread；The a diameter of 10cm of manhole~
13cm, is located at drill body lower part, and medial surface has internal thread.
6. the combination type drill bit according to claim 1 for being suitable for high spray stirring concrete earth pile, it is characterized in that the first stirring
The basic structure of wing and the second stirring wing is all made of rake teeth type structure, and the first stirring wing includes during one hollow and lateral arrangement
Heart rod iron, is disposed with several longitudinal long steel bars on the rod iron of center, and middle part and the center rod iron of longitudinal long steel bar intersect vertically, indulge
It is provided at both ends with cone point to long steel bar, the lateral short rod iron there are two settings on outermost one longitudinal long steel bar,
Laterally short rod iron one end links together with longitudinal long steel bar, and the other end is provided with cone point, is arranged on laterally short rod iron
There is the longitudinal direction short rod iron parallel with longitudinal long steel bar.
7. the combination type drill bit according to claim 6 for being suitable for high spray stirring concrete earth pile, it is characterized in that in two cross
To two fixed plates, slurry road hose and gas circuit hose is provided between short rod iron, it is provided with nozzle between two fixed plates and turns
To seat.
8. the combination type drill bit according to claim 6 for being suitable for high spray stirring concrete earth pile, it is characterized in that center rod iron,
Longitudinal long steel bar, longitudinal short rod iron and lateral short rod iron are formed by the rod iron processing and fabricating of a diameter of 30mm~50mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611129973.0A CN106703705B (en) | 2016-12-09 | 2016-12-09 | Combination type drill bit suitable for high spray stirring concrete earth pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129973.0A CN106703705B (en) | 2016-12-09 | 2016-12-09 | Combination type drill bit suitable for high spray stirring concrete earth pile |
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| CN106703705B true CN106703705B (en) | 2018-09-25 |
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| CN108316281A (en) * | 2018-04-14 | 2018-07-24 | 江苏鸿基水源科技股份有限公司 | Head is stirred in a kind of three-dimensional pick |
| CN115178581A (en) * | 2021-04-01 | 2022-10-14 | 同济大学 | Soil remediation method by using high-pressure stirring and spraying liquid |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0136958B1 (en) * | 1994-10-28 | 1998-05-15 | 임성철 | Piles comprising both precast concrete portions and concrete portions cast in situ |
| CN100494582C (en) * | 2007-03-21 | 2009-06-03 | 山东省机械施工有限公司 | Cement piling apparatus and construction by high-pressure jet agitation method |
| CN201212147Y (en) * | 2008-06-23 | 2009-03-25 | 何世鸣 | Combination drill tool for long screwy jet grouting and stirring pile |
| CA2650102C (en) * | 2009-01-09 | 2013-01-22 | Michael D. Zulak | Earth drilling reamer with replaceable blades |
| CN202300207U (en) * | 2011-10-12 | 2012-07-04 | 成都惠灵丰金刚石钻头有限公司 | Novel replaceable cutter wing reamer |
| CN202280426U (en) * | 2011-11-11 | 2012-06-20 | 连云港市交通工程建设处 | Water-air-injected drill of two-way cement-soil mixing pile machine |
| CN202673154U (en) * | 2012-04-24 | 2013-01-16 | 苏州力高建筑工程技术有限公司 | Drill bit used for mixing pile machine and mixing pile machine |
| CN203463015U (en) * | 2013-08-22 | 2014-03-05 | 武汉市天宝工程机械有限责任公司 | Double-mixing drill of cement-soil mixing pile machine |
| CN203613531U (en) * | 2013-12-25 | 2014-05-28 | 深圳市鼎邦工程有限公司 | Jet grouting and stirring composite construction drill bit for large-diameter compound section cement-soil pile |
| CN205205811U (en) * | 2015-12-02 | 2016-05-04 | 福建路港（集团）有限公司 | Drilling bit of deep submerged agitation pile |
| CN205743732U (en) * | 2016-02-01 | 2016-11-30 | 周兆弟 | A kind of stake driver drilling rod and combinations thereof |
| CN105772256B (en) * | 2016-04-20 | 2018-06-26 | 中国石油大学(华东) | A kind of slanting jet experimental nozzle of stepless angle adjustable |
| CN206246063U (en) * | 2016-12-09 | 2017-06-13 | 山东省建筑科学研究院 | Suitable for the combination type drill bit of height spray stirring concrete earth pile |
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Effective date of registration: 20191230 Address after: 250031 Shandong Province Flyover District of Ji'nan City Road 29. Co-patentee after: Shandong Jianke Speical Building Engineering Technology Center Patentee after: Shandong Academy of Building Science Co., Ltd Address before: 250031 Shandong Province Flyover District of Ji'nan City Road 29. Patentee before: Building Science Inst., Shandong Prov. |