CN108487863A - Drill bit with torsional pulse function - Google Patents
Drill bit with torsional pulse function Download PDFInfo
- Publication number
- CN108487863A CN108487863A CN201810497213.8A CN201810497213A CN108487863A CN 108487863 A CN108487863 A CN 108487863A CN 201810497213 A CN201810497213 A CN 201810497213A CN 108487863 A CN108487863 A CN 108487863A
- Authority
- CN
- China
- Prior art keywords
- vibration machine
- drill body
- drill
- gear wheel
- bit
- 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.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims description 54
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 12
- 230000000737 periodic effect Effects 0.000 abstract description 4
- 238000009987 spinning Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 14
- 210000000515 tooth Anatomy 0.000 description 14
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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- 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
-
- 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
- E21B10/08—Roller 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
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
-
- 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
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (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)
- Earth Drilling (AREA)
- Drilling And Boring (AREA)
Abstract
The present invention relates to a kind of drill bits with torsional pulse function, are mainly made of drill body, drill body connector, gear wheel, vibration machine.Drill body is connected by the bit leg journel of its biasing with gear wheel, and vibration machine is mounted in drill body, and drill body connector is connected through a screw thread with drill body；At runtime, gear wheel both revolved round the sun with bit body, again around the bit leg journel rotation of drill body, while drill bit is with rotary cutting mode fractured rock, the spinning motion of gear wheel provides driving force for vibration machine, vibration machine generates periodic torsional pulse a little, contributes to the stick-slip phenomenon for reducing drill bit.
Description
Technical field
The present invention relates to it is a kind of for oil, gas drilling and other geological drillings with torsional pulse function
Drill bit.
Background technology
As economy continues to develop, Demand of Oil ＆ Gas amount is increasing, and then mouth benefit is exhausted for China's Shallow Oil-Gas resource, oil gas
Development technique is constantly progressive, and the depth of oil/gas well increases, deep-well, ultradeep well number increase.Make the stratum that drilling engineering faces
Working environment is more complicated, and drilling depth is continuously increased, and rock hardness and strength under the effect of bottom confining pressure can all have apparent increasing
Add, causes drill bit efficiency of breaking rock not high.For drill bit when creeping into deep-well stratum, generally existing rate of penetration is very slow, drilling well is spent
It is of high cost, and the raising of bit speed key is how to improve the efficiency of breaking rock of drill bit.According to field experiment practical studies number
According to show while rotary drilling to drill bit apply periodic shock load, be conducive to improve drill bit efficiency of breaking rock, improve
The speed of drilling.
In oil drilling, drill bit is the main tool of fractured rock, and drill bit does not have usually when boring hard or abrasive layer
There are enough torques to carry out broken formation, to make drill bit moment stop operating.Torsional energy storage is in drill string, once it produces
Torque needed for shearing-crushing stratum, drill string energy will discharge, and the shock loading for acting on drill bit will be much higher than usual, most
Drill bit is caused to fail eventually.It in drilling process, is generally mated and additional twisting vibration is provided using drilling tool, assist drill bit
Broken rock.Domestic and international major research institution has developed various torsional impact drilling tools, and torsional pulse is provided for drill bit, from
And reduce the stick-slip phenomenon of drill bit.In the drill bit produced and used at present, drill bit itself cannot generate twisting vibration, in order to reduce
The stick-slip phenomenon of drill bit only provides additional torsional pulse by torsional impact drilling tool, if torsional impact drilling tool is sent out
Raw failure, will be unable to provide additional torque for drill bit, this will influence drilling efficiency.
Invention content
The technical problem to be solved by the present invention is in view of the deficiency of the prior art and provide one kind help
In speed-raising synergy, the drill bit with torsional pulse function of efficiency of breaking rock is improved.
The technical scheme is that：Drill bit with torsional pulse function mainly by drill body, drill body connector,
Gear wheel, vibration machine composition；It is characterized in that：The drill body is provided with oil guiding hole a, oil filler point, slurry channel a, mud
Channel b, threaded hole are starched, tooth is installed at the top of drill body, is installed with gauge teeth and PDC teeth in the middle part of drill body, nozzle a,
Nozzle b is separately mounted to slurry channel a, the outlets slurry channel b；The gear wheel is provided with plug pin hole, and gear wheel is installed with tooth；
The vibration machine includes thrust ball bearing a, jump bit, thrust ball bearing b, vibration machine upper shell, bearing installation
Set, sliding impact sleeve, pin, thrust ball bearing c, self-aligning ball bearing, vibration machine lower housing, delivery set, bevel gear b, steel
Ball b, plug, top cover, steel ball c, jump bit are provided with oil guiding hole d, oil guiding hole e, and the big end of vibration machine upper shell is provided with
Counter sink and annular groove, delivery set are provided with oil guiding hole b, oil guiding hole c, and top cover is provided with trepanning, will when installing vibration machine
Self-aligning ball bearing, delivery set are packed into from vibration machine lower housing upper end successively, successively by thrust ball bearing c, sliding impact sleeve
It is packed into from delivery set upper side, sliding impact sleeve and delivery set are fixed by pin, by bearing mounting sleeve from vibration machine lower housing
Upper end is packed into, and thrust ball bearing a is packed into bearing mounting sleeve, thrust ball bearing b, jump bit are sequentially loaded on vibration machine
After shell, vibration machine upper shell is connected through a screw thread with vibration machine lower housing, and steel ball c, bevel gear b are sequentially loaded into
Steel ball b is packed into the trepanning of top cover by top cover, and with the trepanning of plug top cover, bevel gear b and delivery set are finally passed through screw thread
Connection；When assembling the drill bit with torsional pulse function, O-ring seal is first packed into the annular groove of vibration machine upper shell
It is interior, vibration machine is packed into drill body, vibration machine upper shell is connect with drill body using type face, to realize vibration
Generator it is circumferentially positioned, vibration machine upper shell is fixed with drill body with screw, to realize the week of vibration machine
To and axially position, drill body connector be connected through a screw thread with drill body, then bevel gear a, cutting ferrule are sequentially loaded into gear wheel
Lower end journal, the lower end journal of bevel gear a and gear wheel connected using type face, realizes circumferentially positioned, cutting ferrule and the tooth of bevel gear a
The lower end journal of wheel is fixed, and realizes the axially position of bevel gear a, and rectangular seal is then mounted on gear wheel bottom end inner ring, will
Gear wheel is inserted in the bit leg journel of drill body, and steel ball a is put into plug pin hole, and plug pin is mounted in plug pin hole；It is completed
Afterwards, lubricating oil is added by oil filler point, silk plug sealed oil-filling hole is used in combination.
Plug pin in said program and plug pin hole using being interference fitted, oil guiding hole a, oil guiding hole b, oil guiding hole c, oil guiding hole d,
The bit leg journel raceway groove of oil guiding hole e and drill body constitutes Oil Guide channel, forms good lubricant environment.
Tooth in said program is hard-metal insert；The bit leg journel of drill body passes through intensive treatment, and intensity is high,
Tough is good.
Rectangular seal in said program is metal o-ring, and intensive treatment is passed through on sealing ring surface, wear-resisting
Property is good.
The beneficial effects of the invention are as follows：（1）Drill bit with torsional pulse function utilizes the spinning motion of gear wheel, for vibration
Generator provides driving force, and vibration machine will generate periodic torsional pulse a little, contribute to the stick-slip for reducing drill bit existing
As；（2）Drill bit has the comprehensive function of impact and cutting concurrently with breaking rock by rotary cutting, cutter breaking rock behavior, helps to improve brill
Head center portion efficiency of breaking rock；（3）The bit leg journel of drill body passes through intensive treatment, and intensity is high, and tough is good, and Oil Guide is logical
Road can provide good lubricant environment.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the vertical view of the present invention.
Fig. 3 is the side view of the present invention.
Fig. 4 is the Section A-A figure of Fig. 2 of the present invention.
Fig. 5 is the section B-B figure of Fig. 3 of the present invention.
Fig. 6 is the C-C sectional views of Fig. 3 of the present invention.
Fig. 7 is I magnified partial view of Fig. 4 of the present invention.
Fig. 8 is the structural schematic diagram of gear wheel in the present invention.
Fig. 9 is the schematic diagram in Oil Guide channel in the present invention.
Figure 10 is the structural schematic diagram of drill body in the present invention.
Figure 11 is the distribution schematic diagram of slurry channel a, slurry channel b, oil filler point in the present invention.
Figure 12 is the side view of drill body in the present invention.
Figure 13 is the E-E sectional views of Figure 12 of the present invention.
Figure 14 is the F-F sectional views of Figure 12 of the present invention.
1. nozzle a in figure, 2. gauge teeths, 3. drill body connectors, 4. drill bodies, 5. nozzle b, 6.PDC teeth, 7. teeth
Tooth, 8. gear wheels, 9. plug pins, 10. steel ball a, 11. rectangular seals, 12. thrust ball bearing a, 13. jump bits, 14. thrust ball axis
Hold b, 15. vibration machine upper shells, 16.O type sealing rings, 17. screws, 18. bearing mounting sleeves, 19. sliding impact sleeves, 20.
Pin, 21. thrust ball bearing c, 22. self-aligning ball bearings, 23. vibration machine lower housings, 24. delivery sets, 25. cutting ferrules, 26. cones
Gear a, 27. bevel gear b, 28. steel ball b, 29. plugs, 30. top covers, 31. steel ball c, 32. plug pin holes, 33. gear wheel lower body bottom ends
Inner ring, 34. oil guiding hole a, 35. oil guiding hole b, 36. oil guiding hole c, 37. oil guiding hole d, 38. oil guiding hole e, 39. oil filler points, 40. mud
Channel a, 41. slurry channel b, 42. threaded holes.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
Referring to attached drawing, the drill bit with torsional pulse function it is characterized in that：Drill bit with torsional pulse function is main
It is made of drill body 4, drill body connector 3, gear wheel 8, vibration machine；It is characterized in that：The drill body 4 is provided with
Oil guiding hole a34, oil filler point 39, slurry channel a40, slurry channel b41, threaded hole 42,4 top of drill body are installed with tooth 7,
4 middle part of drill body is installed with gauge teeth 2 and PDC teeth 6, and it is logical that nozzle a1, nozzle b5 are separately mounted to slurry channel a40, mud
Road b41 is exported；The gear wheel 8 is provided with plug pin hole 32, and gear wheel 8 is installed with tooth 7；The vibration machine includes thrust
Ball bearing a12, jump bit 13, thrust ball bearing b14, vibration machine upper shell 15, bearing mounting sleeve 18, sliding impact sleeve
19, pin 20, thrust ball bearing c21, self-aligning ball bearing 22, vibration machine lower housing 23, delivery set 24, bevel gear b27, steel
Ball b28, plug 29, top cover 30, steel ball c31, jump bit 13 are provided with oil guiding hole d37, oil guiding hole e38, vibration machine upper casing
The big end of body 15 is provided with counter sink and annular groove, and delivery set 24 is provided with oil guiding hole b35, oil guiding hole c36, and top cover 30 is provided with
When installing vibration machine, self-aligning ball bearing 22, delivery set 24 are filled from 23 upper end of vibration machine lower housing successively for trepanning
Enter, thrust ball bearing c21, sliding impact sleeve 19 is packed into from 24 upper ends of delivery set successively, sliding impact sleeve 19 and delivery set 24
It is fixed by pin 20, bearing mounting sleeve 18 is packed into from 23 upper end of vibration machine lower housing, thrust ball bearing a12 is packed into axis
Installation set 18 is held, after thrust ball bearing b14, jump bit 13 are sequentially loaded into vibration machine upper shell 15, on vibration machine
Shell 15 is connected through a screw thread with vibration machine lower housing 2, steel ball c31, bevel gear b27 is sequentially loaded into top cover 30, by steel
Ball b28 is packed into the trepanning of top cover 30, and the trepanning of top cover 30 is blocked with plug 29, finally passes through bevel gear b27 and delivery set 24
It is threadedly coupled；When assembling the drill bit with torsional pulse function, O-ring seal 16 is first packed into vibration machine upper shell 15
In annular groove, vibration machine is packed into drill body 4, vibration machine upper shell 15 is connect with drill body 4 using type face,
To realize the circumferentially positioned of vibration machine, vibration machine upper shell 15 and drill body 4 are fixed with screw 17, to realize
The circumferential and axial of vibration machine position, and drill body connector 3 is connected through a screw thread with drill body 4, then by bevel gear
A26, cutting ferrule 25 are sequentially loaded into the lower end journal of gear wheel 8, and bevel gear a26 is connect with the lower end journal of gear wheel 8 using type face, realize
Bevel gear a26's is circumferentially positioned, and cutting ferrule 25 and the lower end journal of gear wheel 8 are fixed, and realizes the axially position of bevel gear a26, then
Rectangular seal 11 is mounted on gear wheel bottom end inner ring 33, gear wheel 8 is inserted in the bit leg journel of drill body 4, steel ball a10 is put
Enter in plug pin hole 32, plug pin 9 is mounted in plug pin hole 32；After being completed, lubricating oil is added by oil filler point 39, silk is used in combination
It blocks and closes oil filler point 39.
Plug pin 9 in said program is with plug pin hole 32 using interference fit, oil guiding hole a34, oil guiding hole b35, oil guiding hole
C36, oil guiding hole d37, oil guiding hole e38 and the bit leg journel raceway groove of drill body 4 constitute Oil Guide channel, form good lubrication ring
Border.
Tooth 7 in said program is hard-metal insert；The bit leg journel of drill body 4 passes through intensive treatment, intensity
Height, tough are good.
Rectangular seal 11 in said program is metal o-ring, and intensive treatment is passed through on sealing ring surface, resistance to
Mill property is good.
The bit leg journel and 8 phase of gear wheel that the drill body 4 of the drill bit with torsional pulse function passes through its biasing
Connection, vibration machine are mounted in drill body 4, and drill body connector 3 is connected through a screw thread with drill body 4；It is running
When, gear wheel 8 not only revolved round the sun with bit body, but also around the bit leg journel rotation of drill body 4, drill bit is with rotary cutting mode fractured rock
Meanwhile the spinning motion of gear wheel 8 provides driving force for vibration machine, driving delivery set 24 drives sliding impact sleeve 19 periodically
Ground impact hammer 13, jump bit 13 generates periodic torsional pulse a little to drill body 4, helps to reduce the viscous of drill bit
Sliding phenomenon.
Claims (4)
1. the drill bit with torsional pulse function is mainly by drill body（4）, drill body connector（3）, gear wheel（8）, vibration hair
Raw device composition；It is characterized in that：The drill body（4）It is provided with oil guiding hole a（34）, oil filler point（39）, slurry channel a
（40）, slurry channel b（41）, threaded hole（42）, drill body（4）Top is installed with tooth（7）, drill body（4）It inlays at middle part
Equipped with gauge teeth（2）With PDC teeth（6）, nozzle a（1）, nozzle b（5）It is separately mounted to slurry channel a（40）, slurry channel b
（41）Outlet；The gear wheel（8）It is provided with plug pin hole（32）, gear wheel（8）It is installed with tooth（7）；The vibration machine
Including thrust ball bearing a（12）, jump bit（13）, thrust ball bearing b（14）, vibration machine upper shell（15）, bearing installation
Set（18）, sliding impact sleeve（19）, pin（20）, thrust ball bearing c（21）, self-aligning ball bearing（22）, vibration machine lower casing
Body（23）, delivery set（24）, bevel gear b（27）, steel ball b（28）, plug（29）, top cover（30）, steel ball c（31）, jump bit
（13）It is provided with oil guiding hole d（37）, oil guiding hole e（38）, vibration machine upper shell（15）Big end be provided with counter sink and ring
Shape slot, delivery set（24）It is provided with oil guiding hole b（35）, oil guiding hole c（36）, top cover（30）It is provided with trepanning, vibration is installed
When device, by self-aligning ball bearing（22）, delivery set（24）Successively from vibration machine lower housing（23）Upper end is packed into, by thrust ball axis
Hold c（21）, sliding impact sleeve（19）It is covered successively from delivery（24）Upper end is packed into, and slides impact sleeve（19）It is covered with delivery（24）By pin
Nail（20）It is fixed, by bearing mounting sleeve（18）From vibration machine lower housing（23）Upper end is packed into, by thrust ball bearing a（12）Dress
Enter bearing mounting sleeve（18）, by thrust ball bearing b（14）, jump bit（13）It is sequentially loaded into vibration machine upper shell（15）Afterwards,
Vibration machine upper shell（15）With vibration machine lower housing（23）It is connected through a screw thread, by steel ball c（31）, bevel gear b
（27）It is sequentially loaded into top cover（30）, by steel ball b（28）It is packed into top cover（30）Trepanning, use plug（29）Block top cover（30）Open
Hole, finally by bevel gear b（27）It is covered with delivery（24）It is connected through a screw thread；When assembling the drill bit with torsional pulse function, first
By O-ring seal（16）It is packed into vibration machine upper shell（15）Annular groove in, vibration machine is packed into drill body
（4）, vibration machine upper shell（15）With drill body（4）It is connected using type face, to realize the circumferentially positioned of vibration machine,
Use screw（17）By vibration machine upper shell（15）With drill body（4）It is fixed, to realize the circumferential direction and axis of vibration machine
To positioning, drill body connector（3）With drill body（4）It is connected through a screw thread, then by bevel gear a（26）, cutting ferrule（25）Successively
It is packed into gear wheel（8）Lower end journal, bevel gear a（26）With gear wheel（8）Lower end journal connected using type face, realize bevel gear a
（26）Circumferentially positioned, cutting ferrule（25）With gear wheel（8）Lower end journal fix, realize bevel gear a（26）Axially position, then
By rectangular seal（11）Mounted on gear wheel bottom end inner ring（33）, by gear wheel（8）It is inserted in drill body（4）Bit leg journel, will
Steel ball a（10）It is put into plug pin hole（32）It is interior, by plug pin（9）Mounted on plug pin hole（32）It is interior；After being completed, pass through oil filler point
（39）Lubricating oil is added, silk plug sealed oil-filling hole is used in combination（39）.
2. the drill bit according to claim 1 with torsional pulse function, it is characterized in that：Plug pin（9）With plug pin hole（32）
Using interference fit, oil guiding hole a（34）, oil guiding hole b（35）, oil guiding hole c（36）, oil guiding hole d（37）, oil guiding hole e（38）With brill
Head ontology（4）Bit leg journel raceway groove constitute Oil Guide channel, form good lubricant environment.
3. the drill bit according to claim 1 with torsional pulse function, it is characterized in that：Tooth（7）For hard-metal insert；
Drill body（4）Bit leg journel pass through intensive treatment, intensity is high, and tough is good.
4. the drill bit according to claim 1 with torsional pulse function, it is characterized in that：Rectangular seal（11）For metal
Sealing ring, and intensive treatment is passed through on sealing ring surface, and wearability is good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497213.8A CN108487863B (en) | 2018-05-22 | 2018-05-22 | Drill bit with torsional impact function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497213.8A CN108487863B (en) | 2018-05-22 | 2018-05-22 | Drill bit with torsional impact function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108487863A true CN108487863A (en) | 2018-09-04 |
| CN108487863B CN108487863B (en) | 2023-07-04 |
Family
ID=63352142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810497213.8A Active CN108487863B (en) | 2018-05-22 | 2018-05-22 | Drill bit with torsional impact function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108487863B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338940A (en) * | 2021-06-29 | 2021-09-03 | 中国科学院武汉岩土力学研究所 | Small-caliber rectangular-section shaft heading machine cutter head suitable for hard rock |
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2018
- 2018-05-22 CN CN201810497213.8A patent/CN108487863B/en active Active
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|---|---|---|---|---|
| EP1251238A1 (en) * | 2001-04-21 | 2002-10-23 | HILTI Aktiengesellschaft | Percussion rock drill |
| US20100294567A1 (en) * | 2009-04-08 | 2010-11-25 | Pdti Holdings, Llc | Impactor Excavation System Having A Drill Bit Discharging In A Cross-Over Pattern |
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