CN108798497A - A kind of composite screw drilling tool - Google Patents
A kind of composite screw drilling tool Download PDFInfo
- Publication number
- CN108798497A CN108798497A CN201710643742.XA CN201710643742A CN108798497A CN 108798497 A CN108798497 A CN 108798497A CN 201710643742 A CN201710643742 A CN 201710643742A CN 108798497 A CN108798497 A CN 108798497A
- Authority
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- China
- Prior art keywords
- hollow tube
- cutting
- wing
- cutter hub
- drilling tool
- Prior art date
- 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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- 238000005553 drilling Methods 0.000 title claims abstract description 55
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 31
- 239000002002 slurry Substances 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 12
- 239000004568 cement Substances 0.000 abstract description 9
- 239000011440 grout Substances 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 238000010276 construction Methods 0.000 description 13
- 239000002689 soil Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel 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
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- 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 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
A kind of composite screw drilling tool includes hollow tube, the first cutting wing, front end cutting body, multigroup stirring wing, wearing plate and sealing shroud containing coupling；Hollow tube is equipped with slurry pipe, tracheae, and upper end is located at coupling retainer plate, lower end has valve；Sealing shroud is two way seal set, and half is placed in the scalariform counterbore of retainer plate, the other half is protruded in retainer plate upper surface；Multigroup stirring wing hollow tube outer wall between the upper and lower every setting；The first cutting wing is with radial arrangement on hollow tube outer wall；Front end cutting body is located at hollow tube lower end outer surface；Wearing plate is installed in stirring wing, the first cutting wing and the concentric free end arc surface of hollow tube；First and third cutting cutter hub be made of hard alloy blocks.The present invention has the characteristics that cutting cutter hub intensity is high, drilling ability is big, stirring is abundant and cement grout, high pressure gas and solidify liquid are injected separately into, and effectively improves drilling efficiency and safety.
Description
Technical field
It is the invention belongs to a kind of drilling tool, more particularly to a kind of to be reinforced for diaphram wall construction, soft soil foundation improvement
The composite screw drilling tool of mixing pile drilling machine.
Background technology
Accelerating Construction of Urban Rail Traffic, the utilization of the underground space, the isolation of rubbish heap buried place and river dyke
In the urban infrastructures such as foundation stabilization, wherein sealing barrier performance is good, adjacent studs since construction of diaphragm wall technique has
Body overlaps, is small to ambient enviroment and effect on building completely, environmental protection and energy saving, without construction public hazards, the construction period is short, low cost and
The advantages that suitable soil layer range is wide, and find broad application and promote.Construction of diaphragm wall is drilled using cement mixing method
Machine is drivingly connected hollow drill pipe and hollow drilling tool in its output shaft by overhead power head, front knife is utilized after drilling tool rotation
Body carries out drilling and stirring is constructed, and such as during construction of diaphragm wall, drilling stirring in drilling tool one side is sprayed into underground on one side
High pressure gas, solidify liquid pass through hollow brill to accelerate the flowing and stirring of underground after drilling and agitating procedure are completed
Bar and hollow drilling tool spray into a certain proportion of cement mortar, finally extract whole drilling rods and drilling tool, remove drilling machine and are inserted into shaped steel, ground
The original place soil containing cement grout forms a diaphram wall through maintenance after a period of time in lower diaphragm wall groove body
Body.
Existing cement mixing method drilling machine is commonly equipped with supply cement mortar during carrying out construction of diaphragm wall
The background system of liquid, pressure-air and solidify liquid, and convey slurry liquid, pressure-air and solidification liquid pipeline and drilling machine driving and move
The swivel joint of power head upper end connects, and swivel joint is communicated with the inner cavity of drilling rod and drilling tool, when drilling tool is revolved with power head and drilling rod
When carrying out drilling, stirring to original place soil when turning, injection solidify liquid, pressure-air and cement grout, due to above-mentioned solidify liquid, high pressure
The inner cavity of air and the equal hollow drill pipe of cement grout one by one regulates and controls and is not directly injected into stage by stage, therefore, in the construction process
It needs to carry out the switching of high pressure gas, solidify liquid and cement grout pipeline in power head upper end, thus be made to construction personnel
At greatly inconvenient, meanwhile, the case where spillage often occurs in the junction of drilling rod and drilling tool, spraying high-pressure gas is hurted sb.'s feelings,
There are larger security risks.With being continuously increased for underground drilling depth, since complex formation, soft or hard soil are mingled with,
In the rotary drilling of SMW engineering methods drilling driver drilling rod, promotion and whipping process, bottom drilling tool bears drilling and the stirring of bigger
Resistance so that cutter tip cutting edge and blade wear are serious, influence construction operation efficiency, cause soil stirring in original place in groove body uneven
It is even, to make the groove body quality of diaphram wall that cannot be effectively ensured.
Invention content
It is a primary object of the present invention to overcome in existing cement mixing method drilling machine drilling tool there are the shortcomings that, provide one
The hard intensity of kind cutter tip is high, cutting fin wear-resisting property is high, stirring is abundant, drilling is efficient, leakproofness is high and operation side
Just the composite screw drilling tool of property is effectively ensured agitation driller and applies solidify liquid, injection high pressure gas in different phase and spray into water
Slurry liquid, to ensure construction of diaphragm wall quality and working security.
To achieve the above objectives, solution of the present invention is：
A kind of composite screw drilling tool, including：
Spiral drill, including hollow tube are set to the slurry pipe and tracheae of hollow tube inner cavity, are located at hollow tube lower end
Bottom end cover and outer-hexagonal connector positioned at hollow tube upper end, the hollow tube outer wall have support slot；
The first cutting wing, including the first cutting cutter hub and the first fin；
Front end cutting body, including third cutting cutter hub and third hilt；
Multigroup stirring wing, wearing plate and sealing shroud；
It is characterized in that：
The slurry pipe in the inner cavity of hollow tube is parallel each other with tracheae；Outer-hexagonal connector endface setting tool
There is the retainer plate of scalariform counterbore；The upper end of the slurry pipe and tracheae is each located on the bottom hole of the scalariform counterbore of retainer plate
In, by pipe valve connection structure, so that it is infused, the when gas transmission and outside of hollow tube connects for the lower end of the slurry pipe and tracheae
It is logical；The sealing shroud is two way seal set, and there is upper and lower annular groove outside, interior each mounting O-shaped rings, its half to be placed in retainer plate
Counterbore step in, the other half protrude in the upper surface of retainer plate；
Multigroup stirring wing is and opposite between the upper and lower every on the hollow tube outer wall of top for being arranged in the first cutting wing
Two groups of stirring wings are arranged to cruciform shape angle in 90 ° in the radial direction of hollow tube；
The first cutting wing is twin-feed spiral blade shape, is located on the hollow tube below multigroup stirring wing, their the
One fin on hollow tube with radial arrangement on its external wall；In addition, in the double end of the first cutting wing, each head the
The first cutting cutter hub is arranged in upper each installation one to the first of one fin below, except the first fin of each head is on the first following free end
Cut outside cutter hub disposed at equal distance, in other positions, first fin first it is following on the first cutting cutter hub position
Set with the first of the first fin of other end it is following on the position of the first cutting cutter hub be space crossings arrangement on rotational trajectory
's；
The front end cutting body has several, is each located at spaced radial on the bottom end cover of hollow tube, installation direction is
Its second cutting cutter hub is set to be mounted to the direction of rotation towards hollow tube, the second cutting cutter hub of each front end cutting body
It is to be fixed on the lower end capping outer end face of hollow tube by the second hilt；
The wearing plate is installed in stirring wing, the first cutting wing and front end cutting body and the concentric free end of hollow tube respectively
Arc surface.
The present invention can be, the pipe valve connection structure includes be mounted on hollow tube on the circumferential surface of bottom end cover the
One valve and the second valve, and slurry pipe and tracheae lower end are connected to the first bend pipe of the first valve and the second valve respectively
With the second bend pipe.
The present invention is also possible that the pipe valve connection structure includesIt is arranged first in bottom end cover with mode of communicating respectively Inner tube and the second inner tube and horizontal central tube, andUnder hollow tube bottom end cover center and withCentral tube is connected to's
Third valve,The lower end of slurry pipe and tracheae in the hollow tube inner cavity respectively connects the first inner tube and the second inner tube.
The present invention is also possible that the blade face of multigroup stirring wing tilts in one direction, is cut with the level of hollow tube
1=35~45 ° of the included angle A formed between face.
The present invention is also possible that the helix angle of the first fin of each head of the first cutting wing is 35~45 °.
The present invention be also possible that it is described first cutting the wing the first fin of each head first below with the water of hollow tube
2=10~15 ° of the included angle A formed between plane section.
The present invention is also possible that the first cutting cutter hub of the first cutting wing and the third cutting cutter hub of front end cutting body
Hard alloy is all made of to be made.
Description of the drawings
Fig. 1 is the structural schematic diagram of composite screw drilling tool embodiment 1 of the present invention；
Fig. 2 is the partial sectional view of Fig. 1, the main internal structure for showing hollow tube；
Fig. 3 is the upward view of Fig. 1；
Fig. 4 is the portions B partial enlarged view in Fig. 2；
Fig. 5 is the vertical view of Fig. 2, the main structure arrangement for showing outer-hexagonal fitting end；
Fig. 6 is the structural schematic diagram of composite screw drilling tool embodiment 2 of the present invention；
Fig. 7 is the partial sectional view of Fig. 6, the main internal structure for showing hollow tube；
Fig. 8 is the upward view of Fig. 6；
Fig. 9 is the portions D partial enlarged view in Fig. 7；
Figure 10 is the vertical view of Fig. 7, the main structure arrangement for showing outer-hexagonal fitting end.
Specific implementation mode
Below in conjunction with embodiment described in attached drawing, the present invention is further illustrated.
Embodiment 1：
As shown in Figs. 1-5, a kind of composite screw drilling tool, the spiral drill 1, including hollow tube 10, are set in hollow tube
The slurry pipe 11 and tracheae 12 of chamber are located at the bottom end cover 15 of hollow tube lower end and the outer-hexagonal connector positioned at hollow tube upper end
18, the hollow tube outer wall has support slot 19；The first cutting wing 3, including the first cutting cutter hub 31 and the first fin；Front end
Cutting body 4, including third cutting cutter hub 41 and third hilt；Multigroup stirring wing 2, wearing plate 6 and sealing shroud 7；Wherein：
The slurry pipe 11 in the inner cavity of hollow tube 10 is parallel each other with tracheae 12；18 end face of outer-hexagonal connector
Retainer plate 182 of place's setting with scalariform counterbore 1821；The upper end of the slurry pipe 11 and tracheae 12 is each located on retainer plate
In the bottom hole of 182 scalariform counterbore 1821, the lower end of the slurry pipe 11 and tracheae 12 by pipe valve connection structure so that its
It is connected to the external of hollow tube 10 when infusion gas transmission；The sealing shroud 7 is two way seal set, has upper and lower annular groove outside,
Interior each mounting O-shaped rings, its half are placed in the counterbore step 1821 of retainer plate 182, the other half is protruded in the upper of retainer plate 182
Surface；Wherein, the pipe valve connection structure includes being mounted on first valve of the hollow tube 10 on the circumferential surface of bottom end cover 15
13 and second valve 14, and slurry pipe 11 and 12 lower end of tracheae are connected to the of the first valve 13 and the second valve 14 respectively
One bend pipe 111 and the second bend pipe 121；
Multigroup stirring wing 2 between the upper and lower every on 10 outer wall of hollow tube for the top for being arranged in the first cutting wing 3, and
Opposite two groups of stirring wings are arranged to cruciform shape angle in 90 ° in the radial direction of hollow tube 10；Multigroup stirring wing 2
Blade face 21 tilt in one direction, 1=35~45 ° of the included angle A formed between the horizontal cross-section of hollow tube 10；
The first cutting wing 3 is twin-feed spiral blade shape, is located on the hollow tube 10 of 2 lower section of multigroup stirring wing, they
The first fin on hollow tube 10 with radial arrangement on its external wall；In addition, in the double end of the first cutting wing 3,
The first fin of each head 32, the first following 321 of 32', 321' it is upper it is each installation one arrange the first cutting cutter hub 31, remove each head first
Fin 32,32 ' is outside 31 disposed at equal distance of cutting cutter hub on the first following free end, in other positions, first wing
On the position of the first cutting cutter hub 31 and the first following 321' of other end the first fin 32' on the first following 321 of piece 32
First cutting cutter hub 31 position be that space crossings arrange on rotational trajectory；Each head the of the first cutting wing 3
One fin 32,32' helix angle be 35~45 °；Under the first fin of each head 32 of the first cutting wing 3, the first of 32'
2=10~15 ° of the included angle A formed between side 321,321' and the horizontal cross-section of hollow tube 10；
The front end cutting body 4 has several, is each located at spaced radial on the bottom end cover 15 of hollow tube 10, installation side
To being that its second cutting cutter hub 41 is made to be mounted to the direction of rotation towards hollow tube 10, the of each front end cutting body 4
Two cutting cutter hubs 41 are fixed on 15 outer end faces of lower end capping of hollow tube 10 by the second hilt 42；
The wearing plate 6 is installed in the cutting wing 3 of stirring wing 2, first and front end cutting body 4 respectively and hollow tube 10 is concentric
Free end arc surface；
First cutting cutter hub 31 of the first cutting wing 3 and the third cutting cutter hub 41 of front end cutting body 4 are all made of hard conjunction
Gold is made.
Embodiment 2：
As illustrated in figures 6-10, difference from Example 1 is：The pipe valve connection structure includesIt is arranged respectively with mode of communicating The first inner tube 151 and the second inner tube 152 in bottom end cover 15 and horizontal central tube 153, andMounted on hollow tube 10 it
The center of lower bottom end cover 15 and withCentral tube 153 is connected toThird valve 16,11 He of slurry pipe in 10 inner cavity of the hollow tube The lower end of tracheae 12 respectively connects the first inner tube 151 and the second inner tube 152.
Composite screw drilling tool of the present invention, by the way that radially mutually intersecting angle in 90 ° is arranged in direction in hollow tube external wall of upper portion
Multigroup stirring wing, effectively improve the mixing uniformity of original place soil significantly；By under the hollow tube below multigroup stirring wing
Portion's outer wall is provided with cuts the wing with hollow tube axial centre direction at the first of different angle, and is arranged in their free end
The wearing plate of high intensity and cutter tip using alloy material, greatly improve the wear-resisting property and brill of composite screw drilling tool
Pick ability；It is solid in different phase injection convenient for mixing pile drilling machine by the slurry pipe and tracheae being equipped in hollow tube inner cavity
Change liquid, cement grout and injection high pressure gas, effectively controls original place soil mixing quality, ensure construction of diaphragm wall quality；It is logical
Cross the sealing shroud being arranged at the outer-hexagonal of composite screw drilling tool upper end, ensure composite screw drilling tool when being connect with drilling rod slurry pipe and
The sealing performance of tracheae avoids the occurrence of spillage, leakage and pressure-air and overflows, effectively improves the leakproofness of composite screw drilling tool
Can, further increase working security.
Without departing from present general inventive concept, various changes and modifications can also be done to the present invention, but only
Will it is identical as composition of the present invention or equivalent if, also belong to protection scope of the present invention.
Claims (7)
1. a kind of composite screw drilling tool, including：
Spiral drill（1）, including hollow tube（10）, it is set to the slurry pipe of hollow tube inner cavity（11）And tracheae（12）, position
Bottom end cover in hollow tube lower end（15）With the outer-hexagonal connector positioned at hollow tube upper end（18）, the hollow tube outer wall
With support slot（19）；
The first cutting wing（3）, including the first cutting cutter hub（31）With the first fin；
Front end cutting body（4）, including third cutting cutter hub（41）With third hilt；
Multigroup stirring wing（2）, wearing plate（6）And sealing shroud（7）；
It is characterized in that：
The slurry pipe（11）And tracheae（12）In hollow tube（10）Inner cavity in be parallel each other；The outer-hexagonal connector
（18）Endface setting has scalariform counterbore（1821）Retainer plate（182）；The slurry pipe（11）And tracheae（12）Upper end
It is each located on retainer plate（182）Scalariform counterbore（1821）Bottom hole in, the lower end of the slurry pipe 11 and tracheae 12 is logical
It crosses pipe valve connection structure and is connected to the external of hollow tube 10 when gas transmission so that it is infused；The sealing shroud（7）For two way seal
There is set upper and lower annular groove outside, interior each mounting O-shaped rings, its half to be placed in retainer plate（182）Counterbore step（1821）
Interior, the other half is protruded in retainer plate（182）Upper surface；
Multigroup stirring wing（2）Between the upper and lower every being arranged in the first cutting wing（3）Top hollow tube（10）Outer wall
On, and opposite two groups of stirring wings are in hollow tube（10）Radial direction be arranged to cruciform shape angle in 90 °；
The first cutting wing（3）For twin-feed spiral blade shape, it is located at multigroup stirring wing（2）The hollow tube of lower section（10）
On, their the first fin is in hollow tube（10）On with radial arrangement on its external wall；In addition, the first cutting wing
（3）Double end in, the first fin of each head（32,32'）It is first following（321,321'）The first bite is arranged in upper each installation one
Body（31）, remove the first fin of each head（32,32'）Cutting cutter hub on the first following free end（31）Outside disposed at equal distance,
In other positions, first fin（32）It is first following（321）On first cutting cutter hub（31）Position with it is another
First first fin（32'）It is first following（321'）On first cutting cutter hub（31）Position be on rotational trajectory interval hand over
Fork arrangement；
The front end cutting body（4）There are several, hollow tube is each located at spaced radial（10）Bottom end cover（15）On,
Installation direction is to make its second cutting cutter hub（41）It is mounted to towards hollow tube（10）Direction of rotation, each front end is cut
Cut body（4）Second cutting cutter hub（41）It is by the second hilt（42）It is fixed on hollow tube（10）Lower end capping（15）Outside
On end face；
The wearing plate（6）It is installed in stirring wing respectively（2）, first cutting the wing（3）With front end cutting body（4）With hollow tube
（10）Concentric free end arc surface.
2. composite screw drilling tool according to claim 1, it is characterised in that the pipe valve connection structure includes in being mounted on
Blank pipe body（10）Neighbouring bottom end cover（15）Circumferential surface on the first valve（13）With the second valve（14）, and respectively by slurry pipe
（11）And tracheae（12）Lower end is connected to the first valve（13）With the second valve（14）The first bend pipe（111）With the second bend pipe
（121）.
3. composite screw drilling tool according to claim 1, it is characterised in that the pipe valve connection structure includes respectively with even
Logical mode is arranged in bottom end cover（15）The first interior inner tube（151）With the second inner tube（152）With horizontal central tube（153）, with
And it is mounted on hollow tube（10）Under bottom end cover（15）Center and and central tube（153）The third valve of connection（16）, described
Hollow tube（10）Slurry pipe in inner cavity（11）And tracheae（12）Lower end respectively connect the first inner tube（151）In second
Pipe（152）.
4. composite screw drilling tool according to claim 1, it is characterised in that multigroup stirring wing（2）Blade face（21）Court
One direction tilts, with hollow tube（10）Horizontal cross-section between 1=35~45 ° of included angle A being formed.
5. composite screw drilling tool according to claim 1, it is characterised in that the first cutting wing（3）Each head first
Fin（32,32'）Helix angle be 30~40 °.
6. composite screw drilling tool according to claim 1, it is characterised in that the first cutting wing（4）Each head first
Fin（32,32'）It is first following（321,321'）With hollow tube（10）Horizontal cross-section between formed included angle A 2=10~
15°。
7. composite screw drilling tool according to claim 1, it is characterised in that the first cutting wing（3）The first bite
Body（31）With front end cutting body（4）Third cut cutter hub（41）Hard alloy is all made of to be made.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017102859649 | 2017-04-27 | ||
| CN201710285964 | 2017-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108798497A true CN108798497A (en) | 2018-11-13 |
Family
ID=64094388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710643742.XA Pending CN108798497A (en) | 2017-04-27 | 2017-07-31 | A kind of composite screw drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108798497A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110280811A (en) * | 2019-07-01 | 2019-09-27 | 岳庆峰 | The method of whole full consumption self-compensating type way-type drilling unit |
| CN111335385A (en) * | 2020-03-09 | 2020-06-26 | 何艳 | Uplift platform ring groove excavating device for uplift pile |
| CN113216854A (en) * | 2021-05-10 | 2021-08-06 | 河南理工大学 | Deep quicksand layer cutting auxiliary device and method for forming pile by using same |
| CN115075231A (en) * | 2022-08-19 | 2022-09-20 | 中铁三局集团有限公司 | Construction device and construction method for soft soil foundation reinforcement |
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| CN202673151U (en) * | 2012-05-16 | 2013-01-16 | 上海广大基础工程有限公司 | Spiral drill bit |
| CN203701981U (en) * | 2014-01-29 | 2014-07-09 | 上海工程机械厂有限公司 | Reamer bit |
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