CN110259387A - A kind of hollow out impact drill - Google Patents
A kind of hollow out impact drill Download PDFInfo
- Publication number
- CN110259387A CN110259387A CN201910351785.XA CN201910351785A CN110259387A CN 110259387 A CN110259387 A CN 110259387A CN 201910351785 A CN201910351785 A CN 201910351785A CN 110259387 A CN110259387 A CN 110259387A
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- Prior art keywords
- gravity
- hollow out
- annular
- impact drill
- circle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005484 gravity Effects 0.000 claims abstract description 122
- 230000001174 ascending effect Effects 0.000 claims abstract description 4
- 230000001133 acceleration Effects 0.000 claims description 19
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 239000011435 rock Substances 0.000 description 10
- 239000002689 soil Substances 0.000 description 8
- 238000004080 punching Methods 0.000 description 7
- 239000004575 stone Substances 0.000 description 6
- 230000035939 shock Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- 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
- E21B10/36—Percussion drill bits
-
- 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
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Earth Drilling (AREA)
Abstract
A kind of hollow out impact drill, civil engineering and Bridge Pile Foundation Construction field, the annular gravity circle including gravity cylinder, multiple gravity plates and multiple and different diameters, gravity cylinder are located at hollow out impact drill center, and annular gravity circle is coaxially disposed with gravity cylinder；The annular gravity circle of different-diameter is ascending to be distributed along gravity drum length direction in ladder, and there are gap between two neighboring annular gravity circle, the working face of annular gravity circle is equipped with multiple hammer teeth, and working face is when hollow out impact drill works and ground contacting surface；Gravity cylinder is fixed with annular gravity circle by multiple gravity plates, and multiple gravity plates are radially uniform to be distributed in gravity cylinder surrounding.The invention enables disposal pore-forming effect during piling is more preferable, inclined hole probability is reduced, improves piling efficiency.
Description
Technical field
The present invention relates to civil engineering and Bridge Pile Foundation Construction field, specially a kind of hollow out impact drill.
Background technique
When current bridge foundation construction need to carry out operation using drill hammer, conventional cross (quincunx) is generallyd use
Drill hammer；Finally for the purpose of forming uniform round hole.In operation process, cross drill hammer relies primarily on impact drill
The torsion of hoist rope drives drill bit to rotate during head lifting, thus realize the shock of circumferential different location, last shape
At a round hole.
But cross drill hammer in actual use, the hammer tooth landing position of drill bit four direction is being circumferentially
Random rather than equally distributed, resulting in piling in this way, eventually form is criss-cross stake holes, or formed eccentric orfice or
Elliptical aperture.This just need it is subsequent additionally correct stake holes using other drill bits or other measures, so that it becomes round hole, virtually
Project amount is increased, economic cost and time cost are increased.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of hollow out impact drills, so that piling
Disposal pore-forming effect is more preferable in the process, reduces inclined hole probability, improves piling efficiency.
To achieve the above objectives, using a kind of hollow out impact drill, including gravity cylinder, multiple gravity plates and multiple and different
The annular gravity circle of diameter, the gravity cylinder are located at the hollow out impact drill center, and the annular gravity circle is round with gravity
Cylinder coaxial arrangement；The annular gravity circle of different-diameter is ascending to be distributed along gravity drum length direction in ladder, described adjacent
There are gap between two annular gravity circles, the working face of the annular gravity circle is equipped with multiple hammer teeth, and the working face is
Hollow out impact drill work when and ground contacting surface；The gravity cylinder is fixed with annular gravity circle by multiple gravity plates, more
A gravity plate is radially uniform to be distributed in gravity cylinder surrounding.
Preferably, the multiple hammer tooth is uniformly arranged on the annular gravity circle.
Preferably, the distance between plane is equal where two neighboring annular gravity circle.
Preferably, the diameter of multiple annular gravity circles is at arithmetic progression, and minimum annular gravisphere and gravity cylinder is straight
The difference of diameter is equal to the difference of other two adjacent annular gravity loop diameters.
Preferably, the cross section of the annular gravity circle be rectangle, narrow side is parallel with the central axis of gravity cylinder, broadside and
The central axis of gravity cylinder.
Preferably, the hammer tooth is cuboid, and its broadside for being vertically installed in annular gravity circle.
Preferably, it is fixedly installed sensing device on the gravity cylinder, the sensing device includes acceleration transducer
And wireless data transmitter, the acceleration of the acceleration transducer monitoring hollow out impact drill, wireless data transmitter will measure
Acceleration signal be sent out.
Preferably, the sensing device also includes angular transducer, and the angular transducer monitoring hollow out impact drill inclines
The angle at angle.
Preferably, scum pipe is installed in hollow out impact drill center, and scum pipe is connected to one end of gravity cylinder, and and ring
The working face of shape gravisphere is disposed opposite to each other.
Preferably, the gravity plate is 9, and the angle formed between two adjacent gravity plates is 40 degree.
The invention has the benefit that
1, the hollow out impact drill main part is engraved structure, and the stone or dregs that when piling is formed have space spilling,
Bit central is also equipped with scum pipe, manage in lay air hose, stone deslagging is inhaled by gas lift reverse circulation, prevents drill bit repeatedly ineffectually
Boring mud is pounded in punching, to improve punching efficiency.
2, the conical head that the hollow out impact drill is made of multiple annular gravity circles, every Secondary Shocks are all round holes, substantially
Inclined hole probability is reduced, the relatively original cross brill effect of pore-forming effect is more preferable, and additional correction stake holes is not necessarily to after the completion of drilling.
3, the annular gravity circle of the hollow out impact drill is distributed at ladder, every time piling impact, the lower layer of the hollow out impact drill
Hammer tooth will form aperture, prepares for the impact cutting of upper one layer of hammer tooth, so that rock cutting becomes to be more easier, improves brill
Hole efficiency.
4, the hollow out impact drill can be bent by analyzing drill bit impact power and time in real time to real-time monitoring drill bit acceleration
Line, the geological conditions of real-time judge shock surface, and information is fed back into the hoist engine control terminal that drill bit lifting discharges, it adjusts in real time
The release length of hoist engine is efficiently done work to most reasonable value.
Detailed description of the invention
Fig. 1, Fig. 2 are the hollow out impact drill structural schematic diagram of the embodiment of the present invention.
Fig. 3 is impact process of embodiment of the present invention impact force-time plot.
Appended drawing reference: 1- hammers tooth, 2- annular gravity circle, 3- gravity cylinder, 4- gravity plate, 5- sensing device, 51- acceleration into shape
Sensor, 52- wireless data transmitter, 53- angular transducer.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of hollow out impact drill, including gravity cylinder 3, multiple gravity plates 4 and multiple and different diameters
Annular gravity circle 2.Gravity cylinder 3 is located at hollow out impact drill center；Annular gravity circle 2 is coaxially disposed with gravity cylinder 3, i.e. institute
There are the center overlapping of axles of the equal gravity cylinder 3 of the central axis of annular gravity circle 2.
The annular gravity circle 2 of different-diameter is ascending to be distributed along 3 length direction of gravity cylinder in ladder, multiple annular weights
One end of power circle 2 and gravity cylinder 3 forms taper bit.There are gaps between two neighboring annular gravity circle 2, so that piling
When the stone that is formed or dregs have space spilling, be convenient for deslagging.The working face of annular gravity circle 2 is equipped with multiple hammer teeth 1, working face
For hollow out impact drill work when with ground face contact surface, and gravity cylinder 3 work when with ground face contact surface be also work
Make face, hammer tooth 1 also can be set above.Preferably, multiple hammer teeth 1 are uniformly arranged on annular gravity circle 2.
Gravity cylinder 3 and annular gravity circle 2 are fixed by multiple gravity plates 4, and multiple gravity plates 4 are radially uniform to be distributed in weight
3 surrounding of power cylinder.Specifically, gravity plate 4 is angularly distributed using the central axis of gravity cylinder 3 as axle center.Preferably, gravity plate 4
For right angled triangle, wherein the radially fixed outer wall in gravity cylinder 3 of a right-angle side, bevel edge respectively with all annular gravity circles
2 is fixed.
In the present embodiment, equal, i.e., the two neighboring annular of the distance between two neighboring 2 place plane of annular gravity circle
The distance between working face of gravisphere is equal.The diameter of multiple annular gravity circles 2 is at arithmetic progression, and minimum annular gravisphere
2 and gravity cylinder 3 diameter difference be equal to other two adjacent 2 diameters of annular gravity circle difference.The cross section of annular gravity circle 2 is
Rectangle, narrow side is parallel with the central axis of gravity cylinder 3, the central axis of broadside and gravity cylinder 3.Preferably, multiple annulars
The cross dimension of gravisphere 2 is completely the same.
In the present embodiment, multiple hammer teeth 1 are equipped on each annular gravity circle 2, hammer tooth 1 is cuboid, and it is vertical
It is set to the broadside of annular gravity circle 2.
As shown in Fig. 2, being fixedly installed sensing device 5 on gravity cylinder 3, sensing device 5 includes acceleration transducer 51
With wireless data transmitter 52, acceleration transducer 51 monitors the acceleration of hollow out impact drill, and wireless data transmitter 52 will be surveyed
The acceleration signal obtained is sent out.
Preferably, sensing device 5 also includes angular transducer 53, and angular transducer 53 monitors hollow out impact drill inclination angle
Angle.
Preferably, scum pipe is installed in hollow out impact drill center, and scum pipe is connected to one end of gravity cylinder 3, and with annular
The working face of gravisphere 2 is disposed opposite to each other, that is, is connected to non-working surface one end of gravity cylinder 3.Air hose is laid in scum pipe pipe, is led to
It crosses gas lift reverse circulation and inhales stone deslagging, preventing drill bit, ineffectually boring mud is pounded in punching repeatedly, to improve punching efficiency.
In a wherein specific embodiment, the size of each part of hollow out impact drill is respectively as follows:
1. 3 inner and outer diameter of gravity cylinder is to be respectively 0.48m and 0.72m, length 2.7m.
2. the annular gravity circle 2 of diameter 0.6m is arranged in the low side of gravity cylinder, remaining by diameter from small to large successively to
Upper arrangement, diameter are respectively 1.2m, 1.8m, 2.4m and 3m.The spacing that adjacent two annular gravities circle 2 projects on central axis is
0.65m.The cross dimension of annular gravity circle 2 is 0.15m*0.08m.
3. the circumferential uniformly distributed cuboid hammer tooth having having a size of 0.15m*0.07m*0.07m on annular gravity circle 2, by straight
Cuboid hammer tooth quantity is respectively 13,27,40,53 and 67 to diameter from small to large.
4. gravity plate 4 has 9 pieces, gravity plate 4 surrounds 3 uniformly distributed, the plate thickness 0.08m of circumferential direction of central gravity cylinder.
The working principle of hollow out impact drill in the embodiment of the present invention are as follows:
The conical head that the hollow out impact drill is made of multiple annular gravity circles, every Secondary Shocks are all round holes, are greatly decreased
Inclined hole probability；And main part is engraved structure, the stone or dregs that when piling is formed have space spilling, also pacify in bit central
Equipped with scum pipe, stone deslagging can be inhaled, preventing drill bit, ineffectually boring mud is pounded in punching repeatedly, improves punching efficiency.
The drive piles every time process of impact of hollow out impact drill can be described with following formula:
One: ∫ Fdt=mv of formula
Formula two: F=ma
Formula three:
Wherein m is the quality of drill hammer, and v is the speed of moment before drill hammer lands, and F is the effect of impact process
Power, t are the attack time, and g is acceleration of gravity 9.8m/s2, s is the release length of steel wire rope of windlass before drill bit lands.η is punching
The resistance coefficient during drill bit freely falling body is hit, is empirical value, is measured as 0.83 by test.
The acceleration transducer 51 of sensing device acquires the acceleration time data of each hollow out impact drill landing process, root
According to formula two, it can be deduced that the effect curves of the F-t of landing process every time.
When hollow out impact drill landing before constant height when, i.e., drill bit land before steel wire rope of windlass release length s
When constant, according to formula three, the speed v of moment is certain before drill hammer lands.
It is at this time definite value on the right of one conservation of momentum equation of formula, as shown in figure 3, can be bent by the effect of different F-t
Line judges the rock and soil properties of drill hammer acting surface, and working time of collision t is longer, and the smaller expression rock and soil properties of F maximum value are got over
Soft (such as curve 3)；Attack time, t was shorter, and the bigger expression rock and soil properties of F maximum value are harder (such as curve 1)；Work as working time of collision
T is moderate, when F maximum value is moderate, sees curve 2.
In operation process, the data that acceleration transducer 51 acquires in real time are sent to elevator by wireless data transmitter 52
Machine control terminal.Hoist engine control terminal can be according to the soft or hard release length s to adjust hoist engine of rock and soil properties；Work as rock and soil properties
When harder, s is increased；When rock and soil properties are softer, reduce s, to realize more optimized impact forces, improves mechanical efficiency.
For example, in some specific embodiment, the release length s=of steel wire rope of windlass before certain is landed for drill bit
30m, wherein m is the quality of drill hammer, and about 8000kg, v are the speed about 20m/s of moment before drill hammer lands.Acceleration
The data acquired in real time are sent to hoist engine control terminal by wireless data transmitter 52 by sensor 51, to obtain F-t's
Effect curves, attack time t are 1.5s, and impacting maximum directed force F is 212KN, finds that the data do not have to data than usual
It is higher, it can be determined that rock and soil properties are softer at this, and the existing release length s for adjusting hoist engine can be kept to continue to impact operation.
Angular transducer 54 monitors impact process and bores the inclination angle situation of rotary head after impact, monitors that drill bit keeps levelness
Preferably, angular deviation range be no more than ± 10 °, illustrate that impact holing region is homogeneous, can continue keep vertical state into
Row impact.If bit inclination range is more than ± 10 ° after impact, illustrate that soil property is uneven, the angle of drill bit before adjustable impact
Degree carries out offset impact, keeps pore-forming better effect uniformly regular.
Hollow out impact drill of the invention is mainly practically applicable to bridge and high-rise building foundation pile construction, relatively be suitable for heavy caliber,
Ultra-deep, embedding rock is more, the high complex geological condition of difficulty, especially suitable for embedding rock more, solution cavity, cobble layer of sand, erratic boulder, boulder bed and
Bad ground construction.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of hollow out impact drill, which is characterized in that including gravity cylinder (3), multiple gravity plates (4) and multiple and different diameters
Annular gravity circle (2), the gravity cylinder (3) is located at hollow out impact drill center, and the annular gravity circle (2) is and again
Power cylinder (3) coaxial arrangement；
The annular gravity circle (2) of different-diameter is ascending to be distributed along gravity cylinder (3) length direction in ladder, and described adjacent two
There are gap between a annular gravity circle (2), the working face of the annular gravity circle (2) is equipped with multiple hammer teeth (1), the work
Make face be hollow out impact drill work when and ground contacting surface；
The gravity cylinder (3) and annular gravity circle (2) are fixed by multiple gravity plates (4), and multiple gravity plates (4) are radially uniform
It is distributed in gravity cylinder (3) surrounding.
2. hollow out impact drill as described in claim 1, it is characterised in that: the multiple hammer tooth (1) is uniformly arranged on the ring
Shape gravisphere (2).
3. hollow out impact drill as claimed in claim 2, it is characterised in that: plane where two neighboring annular gravity circle (2) it
Between be equidistant.
4. hollow out impact drill as described in claim 1, it is characterised in that: the diameter of multiple annular gravity circles (2) is at equal differences
Column, and the difference of the diameter of minimum annular gravisphere (2) and gravity cylinder (3) is equal to other two adjacent annular gravity circle (2) diameters
Difference.
5. hollow out impact drill as described in claim 1, it is characterised in that: the cross section of the annular gravity circle (2) is rectangle,
Narrow side is parallel with the central axis of gravity cylinder (3), the central axis of broadside and gravity cylinder (3).
6. hollow out impact drill as claimed in claim 5, it is characterised in that: the hammer tooth (1) is cuboid, and it is vertically arranged
Broadside in annular gravity circle (2).
7. hollow out impact drill as described in claim 1, it is characterised in that: be fixedly installed sensing on the gravity cylinder (3)
Device (5), the sensing device (5) include acceleration transducer (51) and wireless data transmitter (52), and the acceleration passes
Sensor (51) monitors the acceleration of hollow out impact drill, and the acceleration signal measured is sent out by wireless data transmitter (52).
8. hollow out impact drill as described in claim 1, it is characterised in that: the sensing device (5) also includes angle sensor
Device (53), the angle at angular transducer (53) monitoring hollow out impact drill inclination angle.
9. hollow out impact drill as described in claim 1, it is characterised in that: install scum pipe, row in hollow out impact drill center
Slag pipe is connected to one end of gravity cylinder (3), and is disposed opposite to each other with the working face of annular gravity circle (2).
10. hollow out impact drill as described in claim 1, it is characterised in that: the gravity plate is 9, two adjacent gravity plates (4)
Between the angle that is formed be 40 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910351785.XA CN110259387A (en) | 2019-04-28 | 2019-04-28 | A kind of hollow out impact drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910351785.XA CN110259387A (en) | 2019-04-28 | 2019-04-28 | A kind of hollow out impact drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110259387A true CN110259387A (en) | 2019-09-20 |
Family
ID=67913991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910351785.XA Pending CN110259387A (en) | 2019-04-28 | 2019-04-28 | A kind of hollow out impact drill |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638692A (en) * | 2021-08-03 | 2021-11-12 | 中国二十冶集团有限公司 | Drilling method for inclined rock surface |
| CN114837179A (en) * | 2022-04-15 | 2022-08-02 | 广东省韶铸集团有限公司（韶关铸锻总厂） | Impact hammer |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638692A (en) * | 2021-08-03 | 2021-11-12 | 中国二十冶集团有限公司 | Drilling method for inclined rock surface |
| CN113638692B (en) * | 2021-08-03 | 2022-11-25 | 中国二十冶集团有限公司 | Drilling method for inclined rock surface |
| CN114837179A (en) * | 2022-04-15 | 2022-08-02 | 广东省韶铸集团有限公司（韶关铸锻总厂） | Impact hammer |
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Application publication date: 20190920 |