CN108843245A - A kind of diameter-enlarging drill bit and pile foundation hole diameter enlarging method - Google Patents
A kind of diameter-enlarging drill bit and pile foundation hole diameter enlarging method Download PDFInfo
- Publication number
- CN108843245A CN108843245A CN201810529317.2A CN201810529317A CN108843245A CN 108843245 A CN108843245 A CN 108843245A CN 201810529317 A CN201810529317 A CN 201810529317A CN 108843245 A CN108843245 A CN 108843245A
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- Prior art keywords
- cutter
- diameter
- drill body
- enlarging
- fixed plate
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 abstract description 24
- 238000013517 stratification Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to Construction of Civil Engineering equipment technical fields, disclose a kind of diameter-enlarging drill bit, it includes that one end is provided with the drill body of work department and the expanding cutter including fixed plate and cutter, fixed plate one end is detachably connected with drill body, the other end connects cutter, and maximum distance of the cutter away from drill body central axis is greater than distance of the drill body outer wall away from drill body central axis.By the way that the expanding cutter being detachably connected with drill body is arranged, so that the expanding of pile foundation hole can be realized by installing expanding cutter in pile foundation hole work progress, avoids and replace larger-diameter drill bit bring inconvenience in construction, difficulty of construction is reduced, construction efficiency is improved.And need to only prepare the different expanding cutter of multiple structure sizes, the preparation quantity of drill bit is reduced, the investment of period cost before capable of reducing.The present invention also provides a kind of pile foundation hole diameter enlarging method, it can reduce the rotary digging difficulty for needing expanding pile foundation hole, improve the rotary digging efficiency of pile foundation hole.
Description
Technical field
The present invention relates to Construction of Civil Engineering equipment technical field more particularly to a kind of diameter-enlarging drill bit and the expanding sides of pile foundation hole
Method.
Background technique
In pile foundation construction, it is often necessary to steel pile casting is set in certain pile foundation pore forming process, but general steel pile casting
Diameter it is bigger than the diameter of stake holes, therefore when casing is arranged used drill bit diameter equally than being used when pile foundation pore-forming
Drill bit diameter it is big.
At present when pile foundation construction, the drill bit for preparing different-diameter, the diameter of the pile foundation hole of rotary digging as needed are generally required
Using the drill bit of corresponding diameter, therefore in the construction process, it is often necessary to which more bit change not only increases construction time and construction
Cost, and the labor intensity of field worker is increased, reduce construction efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of diameter-enlarging drill bits, to solve in the prior art in the pile foundation of rotary digging different-diameter
It is frequently necessary to more bit change during hole, increases construction time and construction cost, while increasing difficulty of construction.
For this purpose, the present invention uses following technical scheme：
A kind of diameter-enlarging drill bit, including：
Drill body, one end are provided with work department；
Expanding cutter comprising fixed plate and cutter, described fixed plate one end are detachably connected with the drill body, separately
One end connects the cutter, and maximum distance of the cutter away from the drill body central axis is greater than the drill body outer wall
Distance away from the drill body central axis.
Preferably, the cutter includes the first cutter and the second cutter being connected, first cutter and described
Two cutters are vertically connected at the fixed plate.
A side preferably, second cutter is connected with the fixed plate in opposite two sides of one end
Second cutter is connected, another side and the outer wall of the drill body abut against.
Preferably, second cutter is obliquely installed, and it is lower with the outer wall of the drill body to abut against side.
Preferably, second cutter connect L-shaped structure with the fixed plate.
Preferably, offer the first fixation hole in the fixed plate, on the drill body with first fixation hole
Relative position offers the second fixation hole, and fastener is by first fixation hole and second fixation hole by the fixed plate
It is fixed on the drill body.
Preferably, further include fixing piece, the fixing piece includes horizontal part and the vertical portion that connect with the horizontal part,
Third fixation hole is offered on the horizontal part, the fastener passes through the third fixation hole, the first fixation hole and described
The fixed plate is fixed on the drill body by two fixation holes, and the vertical portion is not connected with described horizontal part one end and is pressed on
In the fixed plate.
To achieve the above object, the present invention also provides a kind of pile foundation hole diameter enlarging methods, using above-mentioned diameter-enlarging drill bit, according to institute
The diameter of the pile foundation hole of rotary digging is needed to increase or reduce maximum distance of the cutter away from the drill body central axis.
Beneficial effects of the present invention：
A kind of diameter-enlarging drill bit proposed by the present invention, by the way that the expanding cutter being detachably connected with drill body is arranged, so that
In pile foundation hole work progress, the expanding of pile foundation hole can be realized by installing expanding cutter, avoid and replaced not in construction
With the drill bit of diameter, and expanding cutter is easy for assemble or unload, and low cost reduces difficulty of construction, shortens the construction time, mentions
High construction efficiency.And before pile foundation hole construction, it only need to prepare the different expanding cutter of multiple structure sizes, reduce brill
The preparation quantity of head, the investment of period cost before reducing.In addition, expanding cutter is mounted on one of drill body far from work department
End, can be realized in rotary digging pile foundation hole, and expanding cutter only needs the part geological stratification except rotary digging drill bit ontology radius, reduce
The workload of expanding cutter extends the service life of expanding cutter.
Pile foundation hole diameter enlarging method proposed by the present invention can reduce the rotary digging difficulty for needing expanding pile foundation hole, improve stake
The rotary digging efficiency of datum hole.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of diameter-enlarging drill bit provided by the invention；
Fig. 2 is the partial enlarged view in Fig. 1 at A；
Fig. 3 is the structural schematic diagram of expanding cutter provided by the invention.
In figure：
1, drill body；11, work department；
2, expanding cutter；21, fixed plate；211, the first fixation hole；22, the first cutter；23, the second cutter；
3, fixing piece；31, horizontal part；32, vertical portion；
4, fastener.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1 to Figure 3, a kind of diameter-enlarging drill bit, including drill body 1 and expanding cutter 2 are present embodiments provided, is bored
1 one end of head ontology is provided with work department 11, and in the present embodiment, drill body 1 is cylindrical structure.Expanding cutter 2 includes solid
Fixed board 21 and cutter, 21 one end of fixed plate are detachably connected with drill body 1 far from one end of work department 11, and the other end connects knife
Tool, the maximum distance of central axis of the cutter apart from drill body 1 is greater than the radius of drill body 1, as long as cutter is apart from drill bit
The distance of the central axis of ontology 1 is bigger than the radius of drill body 1, can be realized and is revolved by expanding cutter 2 to drill body 1
The pile foundation hole of digging carries out expanding.
By the way that the expanding cutter 2 being detachably connected with drill body 1 is arranged, so that passing through in pile foundation hole work progress
Installing expanding cutter 2 can be realized the expanding of pile foundation hole, avoids and replaces larger-diameter drill bit bring inconvenience in construction,
And expanding cutter 2 is easy for assemble or unload, and low cost reduces difficulty of construction, shortens the construction time, improves construction effect
Rate.And before pile foundation hole construction, it only need to prepare the different expanding cutter 2 of multiple structure sizes, reduce the preparation of drill bit
Quantity, the investment of period cost before reducing.In addition, expanding cutter 2 is mounted on the one end of drill body 1 far from work department 11,
It can be realized in rotary digging pile foundation hole, expanding cutter 2 only needs the part geological stratification except 1 radius of rotary digging drill bit ontology, reduces
The workload of expanding cutter 2 extends the service life of expanding cutter 2.
As shown in figs. 1 and 3, expanding cutter 2 includes fixed plate 21 and cutter, and one end that fixed plate 21 is not connected with cutter opens up
There is the first fixation hole 211, the first fixation hole 211 is threaded hole, is opened up on drill body 1 with 211 relative position of the first fixation hole
There is the second fixation hole, the second fixation hole is threaded hole, and fastener 4 passes through the first fixation hole 211 and the second fixation hole for fixed plate
21 are fixed on drill body 1, and fastener 4 is bolt.When pile foundation hole need it is expanding when, the pile foundation hole of rotary digging as needed it is straight
The expanding cutter 2 of the size installation different structure size of diameter, the in particular different fixed plate 21 of length, that is, it is different expanding
The length of the fixed plate 21 of cutter 2 is different.
By setting threaded hole for the first fixation hole 211, the second fixation hole, and fixed plate 21 is fixed on by bolt
On drill body 1, being detachably connected for fixed plate 21 and drill body 1 can be realized, convenient for the installation and removal of fixed plate 21.
Cutter includes the first cutter 22 and the second cutter 23 being connected, and the first cutter 22 is arranged along the vertical direction, and is hung down
Directly in fixed plate 21, the second cutter 23 is also perpendicular to fixed plate 21, and the second cutter 23 and the L-shaped structure of fixed plate 21,
Second cutter 23 is connected and fixed a side in two relative sides of 21 one end of plate and connects the first cutter 22, another side
It is abutted against with the outer wall of drill body 1.In addition, the second cutter 23 is obliquely installed, wherein the side being connected with the first cutter 22
Higher, the side abutted against with 1 outer wall of drill body is lower.
It, can be in rotary digging pile foundation hole by abutting against the outer wall of a side of the second cutter 23 and drill body 1
The stability for increasing expanding cutter 2 in the process prevents expanding cutter 2 from biggish shake occurring during the work time and is deformed
Or damage.By the way that the second cutter 23 is obliquely installed, and it is lower with side that 1 outer wall of drill body abuts against, so that in rotary digging
During pile foundation hole, the second cutter 23 is first contacted with geological stratification close to the part of 1 outer wall of drill body, and the second cutter 23 is separate
It is contacted behind one end of drill body 1 with geological stratification, with realizing radial direction higher slice rotary digging of second cutter 23 in drill body 1
Matter layer avoids the second cutter 23 from being caused the second cutter 23 to be deformed or damage by biggish active force when contacting with geological stratification
It is bad.
As depicted in figs. 1 and 2, which further includes fixing piece 3, and fixing piece 3 includes horizontal part 31 and and horizontal part
The vertical portions 32 of 31 connections, offer third fixation hole on horizontal part 31, and third fixation hole is threaded hole, and fastener 4 passes through the
Fixed plate 21 is fixed on drill body 1 by three fixation holes, the first fixation hole 211 and the second fixation hole, and vertical portion 32 is not connected
One end of horizontal part 31 is pressed in fixed plate 21.
By the way that fixing piece 3 is arranged, third fixation hole, the first fixation hole 211 and the second fixation hole can be passed through in fastener 4
When fixed plate 21 is fixed on drill body 1, vertical portion 32 applies certain active force to fixed plate 21, increases expanding cutter
2 stability prevents expanding cutter 2 from biggish shake occurring during the work time and is deformed or damages.
The present embodiment additionally provides a kind of pile foundation hole diameter enlarging method, is increased according to the size of the pile foundation bore dia of required rotary digging
Or reduce maximum distance of the cutter away from 1 central axis of drill body.
It, can basis when needing the pile foundation hole that is relatively large in diameter of the rotary digging than drill body 1 in the work progress of pile foundation hole
Need the difference between the radius of the pile foundation hole of rotary digging and the radius of drill body 1 changes cutter away from 1 center of drill body
The maximum distance of axis, that is, the difference between the radius of the pile foundation hole of rotary digging and the radius of drill body 1 is needed to be equal to knife
The maximum distance of central axis of the tool away from drill body 1 subtracts the radius of drill body 1, i.e., the first cutter 22 is far from drill body
Linear distance of 1 side away from 1 outer wall of drill body, while the second cutter 23 is accordingly increased in 1 radial direction of drill body
On length, guarantee the second cutter 23 be not connected with the first cutter 22 side abutted with the outer wall of drill body 1.And above-mentioned first
Linear distance of the cutter 22 far from 1 side of drill body away from 1 outer wall of drill body is adjusted by changing 21 length of fixed plate
It is whole.
Above-mentioned pile foundation hole diameter enlarging method can reduce the rotary digging difficulty for needing expanding pile foundation hole, improve the rotary digging of pile foundation hole
Efficiency.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (8)
1. a kind of diameter-enlarging drill bit, which is characterized in that including：
Drill body (1), one end are provided with work department (11)；
Expanding cutter (2) comprising fixed plate (21) and cutter, described fixed plate (21) one end and the drill body (1) can
Dismantling connection, the other end connect the cutter, and maximum distance of the cutter away from the drill body (1) central axis is greater than institute
State distance of drill body (1) outer wall away from the drill body (1) central axis.
2. diameter-enlarging drill bit according to claim 1, which is characterized in that the cutter includes the first cutter (22) being connected
With the second cutter (23), first cutter (22) and second cutter (23) are vertically connected at the fixed plate (21).
3. diameter-enlarging drill bit according to claim 2, which is characterized in that second cutter (23) and the fixed plate (21)
A side being connected in opposite two sides of one end connects first cutter (22), another side and the drill bit sheet
The outer wall of body (1) abuts against.
4. diameter-enlarging drill bit according to claim 3, which is characterized in that second cutter (23) is obliquely installed, and with institute
Stating the outer wall of drill body (1), to abut against side lower.
5. diameter-enlarging drill bit according to claim 2, which is characterized in that second cutter (23) and the fixed plate (21)
Connect L-shaped structure.
6. diameter-enlarging drill bit according to claim 1, which is characterized in that offer the first fixation hole on the fixed plate (21)
(211), the second fixation hole, fastener are offered with the first fixation hole (211) relative position on the drill body (1)
(4) fixed plate (21) is fixed on by the drill body by first fixation hole (211) and second fixation hole
(1) on.
7. diameter-enlarging drill bit according to claim 6, which is characterized in that it further include fixing piece (3), fixing piece (3) packet
The vertical portion (32) for including horizontal part (31) and connecting with the horizontal part (31) offers third on the horizontal part (31) and fixes
Hole, the fastener (4) is by the third fixation hole, the first fixation hole (211) and second fixation hole by the fixation
Plate (21) is fixed on the drill body (1), and the vertical portion (32) is not connected with the horizontal part (31) one end and is pressed on institute
It states on fixed plate (21).
8. a kind of pile foundation hole hole diameter enlarging method, which is characterized in that such as described in any item diameter-enlarging drill bits of claim 1-7 are used,
Increase or reduce maximum distance of the cutter away from the drill body central axis according to the diameter of the pile foundation hole of required rotary digging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810529317.2A CN108843245B (en) | 2018-05-29 | 2018-05-29 | Expanding drill bit and pile foundation hole expanding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810529317.2A CN108843245B (en) | 2018-05-29 | 2018-05-29 | Expanding drill bit and pile foundation hole expanding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108843245A true CN108843245A (en) | 2018-11-20 |
| CN108843245B CN108843245B (en) | 2020-03-13 |
Family
ID=64208058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810529317.2A Active CN108843245B (en) | 2018-05-29 | 2018-05-29 | Expanding drill bit and pile foundation hole expanding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108843245B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202451059U (en) * | 2011-12-29 | 2012-09-26 | 山河智能装备股份有限公司 | Hole dilating drill bit |
| KR20140062591A (en) * | 2012-11-13 | 2014-05-26 | (주)삼일이엔씨 | Drill bit for underground excavation and slime discharging method using that |
| JP2014177793A (en) * | 2013-03-14 | 2014-09-25 | Toda Constr Co Ltd | Step processing device for drilling hole |
| CN204436263U (en) * | 2015-01-29 | 2015-07-01 | 徐威 | The double-deck diameter-enlarging drill bit of a kind of civil engineering pile foundation construction |
| CN205154031U (en) * | 2015-11-06 | 2016-04-13 | 宁波易通建设有限公司 | A drill bit for constructing concrete drilling bored concrete pile |
| CN106194034A (en) * | 2016-08-31 | 2016-12-07 | 中冶天工集团有限公司 | A kind of hydraulically adjustable drill bit device for the expanding pore-forming of pile foundation and construction method thereof |
| JP2017066807A (en) * | 2015-10-01 | 2017-04-06 | Ｊｆｅスチール株式会社 | Hydraulic cylinder type expansion head |
| CN206329279U (en) * | 2016-12-29 | 2017-07-14 | 罗秀松 | Civil engineering pile foundation construction bilayer diameter-enlarging drill bit |
| JP2018009391A (en) * | 2016-07-14 | 2018-01-18 | 住鉱資源開発株式会社 | Drilling system and drilling method |
-
2018
- 2018-05-29 CN CN201810529317.2A patent/CN108843245B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202451059U (en) * | 2011-12-29 | 2012-09-26 | 山河智能装备股份有限公司 | Hole dilating drill bit |
| KR20140062591A (en) * | 2012-11-13 | 2014-05-26 | (주)삼일이엔씨 | Drill bit for underground excavation and slime discharging method using that |
| JP2014177793A (en) * | 2013-03-14 | 2014-09-25 | Toda Constr Co Ltd | Step processing device for drilling hole |
| CN204436263U (en) * | 2015-01-29 | 2015-07-01 | 徐威 | The double-deck diameter-enlarging drill bit of a kind of civil engineering pile foundation construction |
| JP2017066807A (en) * | 2015-10-01 | 2017-04-06 | Ｊｆｅスチール株式会社 | Hydraulic cylinder type expansion head |
| CN205154031U (en) * | 2015-11-06 | 2016-04-13 | 宁波易通建设有限公司 | A drill bit for constructing concrete drilling bored concrete pile |
| JP2018009391A (en) * | 2016-07-14 | 2018-01-18 | 住鉱資源開発株式会社 | Drilling system and drilling method |
| CN106194034A (en) * | 2016-08-31 | 2016-12-07 | 中冶天工集团有限公司 | A kind of hydraulically adjustable drill bit device for the expanding pore-forming of pile foundation and construction method thereof |
| CN206329279U (en) * | 2016-12-29 | 2017-07-14 | 罗秀松 | Civil engineering pile foundation construction bilayer diameter-enlarging drill bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108843245B (en) | 2020-03-13 |
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