CN108678678A - A kind of mine double-layer dry type dust suction drill bit - Google Patents
A kind of mine double-layer dry type dust suction drill bit Download PDFInfo
- Publication number
- CN108678678A CN108678678A CN201810576071.4A CN201810576071A CN108678678A CN 108678678 A CN108678678 A CN 108678678A CN 201810576071 A CN201810576071 A CN 201810576071A CN 108678678 A CN108678678 A CN 108678678A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- drill
- planet carrier
- dust suction
- dry type
- 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
- 239000000428 dust Substances 0.000 title claims abstract description 25
- 239000003245 coal Substances 0.000 abstract description 11
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
-
- 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
- E21B10/00—Drill bits
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
A kind of mine double-layer dry type dust suction drill bit, including the first drill bit, the second drill bit, connecting rod, hollow drill, planetary gear, planet carrier and planet carrier locking mechanism.Before first drill bit is located at the second drill bit and it is fixed by the connecting rod on the inner wall of hollow drill front end.Second chisel edge is circular cone concave surface, has ring gear on inner wall, has external toothing on the outer wall of front end.Planet carrier is located at after the second drill bit and is looped around around hollow drill, and planet carrier locking mechanism is connected with the bottom of planet carrier.Ring gear, planetary gear, planet carrier and external toothing form planetary gear train.The first drill bit and the second drill bit that the mine double-layer dry type dust suction drill bit of the present invention has direction of rotation opposite, crushing effect are good.Gap in drill bit gradually broadens from outside to inside, will not block.The tip portion of second drill bit is contacted with coal petrography, can be crushed bulk coal body, and crushing efficiency is high, and can prevent bulk coal body from blocking drill bit, improves speed of fulfiling hole and hole quality.
Description
Technical field
The present invention relates to mining equipment more particularly to a kind of mine double-layer dry type dust suction drill bits.
Background technology
It is soft projecting coal bed in coal mine, it is easy to collapse in operation process using conventional bore operation device and method
Hole, plug-hole, spray orifice, situations such as top is bored, filter core blocks in Bit Cavity body, wind power slag-discharging can also cause working face to make in boring procedure
Gas and coal dust explosion hazard in industry environment.In short, in use accident easily occurs for routine work device (including drill bit), work
It is less efficient and danger can be brought to operating personnel.
Invention content
The purpose of the present invention is to provide the mine double-layer dry type dust suction drill bits that a kind of broken rock is efficient and will not block.
To realize the above goal of the invention, technical scheme is as follows：
A kind of mine double-layer dry type dust suction drill bit, including the first drill bit, the second drill bit, connecting rod, hollow drill, planet tooth
Wheel, planet carrier and planet carrier locking mechanism.Before first drill bit is located at the second drill bit and it is fixed by the connecting rod in hollow drill
On the inner wall of front end.Second drill bit is hollow cylinder, and front end is circular cone concave surface, has ring gear, hollow drill on inner wall
There is external toothing on the outer wall of front end.Planet carrier is located at after the second drill bit and is looped around around hollow drill, and planet carrier locks machine
Structure is connected with the bottom of planet carrier.Planetary gear between ring gear and external toothing, ring gear, planetary gear, planet carrier and
External toothing forms planetary gear train.
Preferably, planet carrier locking mechanism is resistance rotor piece, and resistance rotor piece simultaneously, reaches the second brill perpendicular to hollow drill
Except head.
Preferably, the first drill bit is cone, has spiral drill lip on the circular conical surface of the first drill bit.
Preferably, wing is distributed on spiral drill lip.
Preferably, there is spiral groove on the second drill bit.
Preferably, the second drill bit has the first annular recess, the front end of wheel shaft with planetary wheel shaft upper end joint
It is caught in the first annular recess and can be rotated in the first annular recess.
Preferably, there is the second annular recess, the second drill bit and the second annular recess joint to have on the top of hollow drill
There are collar flange, collar flange to be caught in the second annular recess and can be rotated in the second annular recess.
Preferably, planetary gear is 4, and 4 planetary gear equidistantly distributeds are between the ring gear and external toothing
In gap.
Preferably, the rear end of connecting rod has cross bar, and the both ends of cross bar are fixed on the inner wall of the hollow drill.
Preferably, cross bar is 4, and 4 cross bars are crossed as cross two-by-two.
Compared with prior art, beneficial effects of the present invention：The mine double-layer dry type dust suction drill bit of the present invention has rotation
The first opposite drill bit of direction and the second drill bit, crushing effect are more preferable；Second chisel edge has taper concave surface, in dust suction drill bit
Gap gradually broaden from outside to inside, will not block；The tip portion of second drill bit is contacted with coal petrography, can be crushed bulk
Coal body, crushing efficiency higher, and can prevent bulk coal body from blocking dust suction drill bit, speed of fulfiling hole and hole quality are improved, and reduce
Maintenance cost, cost of labor in bore operation and time cost.
Description of the drawings
Fig. 1 is a kind of sectional view of mine double-layer dry type dust suction drill bit described in the embodiment of the present invention；
Fig. 2 is a kind of vertical view of mine double-layer dry type dust suction drill bit described in the embodiment of the present invention；
Fig. 3 is a kind of planetary gear train cross-sectional view of mine double-layer dry type dust suction drill bit described in the embodiment of the present invention；
Fig. 4 be the embodiment of the present invention described in planetary gear, the second drill bit and hollow drill joint detail view；
Fig. 5 is the relative position schematic diagram of the cyclic annular catch and the second collar flange described in the embodiment of the present invention；
In figure 1 above -5, the first drill bits of 1-；101- spiral drill lips；The second drill bits of 2-；201- spiral grooves；202- first
Annular recess；The first collar flanges of 203-；The second collar flanges of 204-；3- connecting rods；301- cross bars；4- hollow drills；401-
Second annular recess；5- planetary gears；501- wheel shafts；502- ring-type catch；6- planet carriers；7- hinders rotor piece.
Specific implementation mode：
The present invention is described further with reference to the accompanying drawings.
Embodiment
As shown in Figure 1,2 and 3, a kind of mine double-layer dry type dust suction drill bit is axially symmetric structure, including the first drill bit 1, the
Two drill bits 2, connecting rod 3,4,4 planetary gears 5 of hollow drill, planet carrier 6 and resistance rotor piece 7.First drill bit 1 is located at second and bores
It is cone before first 2, there is spiral drill lip 101 on circular conical surface, there is wing on spiral drill lip 101.After connecting rod 3
There are 4 cross bars, 301,4 cross bars 301 to be crossed as cross two-by-two at end, and hollow drill is welded or is screwed onto at the both ends of cross bar 301
On 4 inner wall, the axial passage of front and back perforation is equipped in hollow drill 4, the diameter of the second drill bit 2 is more than the straight of hollow drill 4
Diameter.
Second drill bit 2 is hollow cylinder, and front end is circular cone concave surface, has spiral groove 201 on circular cone concave surface.Due to
Gap between first drill bit 1 and the second drill bit 2 gradually broadens from outside to inside, is just less likely to occur to block in such drill bit, and
And the coal petrography of bulk only by the second drill bit 2 it is broken after can just enter in hollow drill 4, prevent it from blocking in drill bit
Channel also greatly accelerates drivage efficiency.
There is ring gear on the inner wall of second drill bit 2, there is external toothing on 4 front end outer wall of hollow drill.Planet carrier 6 is located at
It after second drill bit 2 and is looped around around hollow drill 4, but is not in contact with hollow drill 4.
45 equidistantly distributeds of planetary gear are in the gap between ring gear and external toothing, ring gear, planetary gear 5,
Planet carrier 6 and external toothing form planetary gear train.The bottom of the wheel shaft 501 of planetary gear 5 is fixed on planet carrier 6, resistance rotor piece 7
Positioned at the bottom of planet carrier 6, and perpendicular to hollow drill 4, a part for resistance rotor piece 7 reaches except the second drill bit 2.
As shown in figure 4, the 501 upper end joint of wheel shaft of the second drill bit 2 and planetary gear 5 has the first annular recess 202,
The front end of wheel shaft 501 is caught in the first annular recess 202, and when the second drill bit 2 rotates, wheel shaft 501 is in the first annular recess 202
Interior rotation, the first annular recess 202 and locked planet carrier 6 fix the wheel shaft 501 of planetary gear 5, it is ensured that planetary gear 5
Stability.The top of hollow drill 4 has the second annular recess 401,401 joint of the second drill bit 2 and the second annular recess
With the first collar flange 203, the first collar flange 203 is caught in the second annular recess 401 as the rotation of the second drill bit 2 exists
Rotation in second annular recess 401, makes 2 even running of the second drill bit and can be simultaneously advanced with core drilling 4.
As shown in figure 5, can also increase perpendicular to the second of wheel shaft 501 with the 501 bottom place of being affixed of wheel shaft in the second drill bit 2
Collar flange 204, increases the annular baffle 502 perpendicular to wheel shaft 501 on wheel shaft 501, and annular baffle 502 is stuck in the second ring-type
On flange 204 so that planetary gear 5 is stuck between the first annular recess 202 of the second drill bit 2 and the second collar flange 204, this
Sample planetary gear 5 and planet carrier 6 can be simultaneously advanced with the second drill bit 2, and cyclic annular catch 502 can also prevent dust from entering ring gear
Between external toothing.
When drilling, resistance drill blade 7 is embedded in coal petrography, to locked planet carrier 6, planetary gear 5 is made to become idle pulley.In core drill
When bar 4 bores dynamic, the first drill bit 1 is rotated coaxially with hollow drill 4, and the steering of the second drill bit 2 is opposite with the first drill bit 1.First bores
Coal petrography is carried out broken cutting by first 1, and power is provided by hollow drill 4.Coal dust enters hollow drill 4 by spiral drill lip 101
Interior axial passage, the fine dusts generated in the process of drilling are gone out by the negative-pressure ward in hollow drill 4, and bulky grain nugget will
It is little particle to be crushed by the second drill bit 2, and the spiral groove 201 by inverting thereon is pressed into hollow drill 4, finally carries out at concentration
Reason, avoids that 4 endoporus of hollow drill is blocked by bulky grain ickings or annular of the bulky grain ickings between hollow drill 4 and hole wall is empty
Between it is middle blocking cause plug-hole, collapse hole, spray orifice and top bore.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Still can the present invention be modified or be waited
With replacing, without departing from the spirit or scope of the invention, or any substitutions, the power in the present invention should all be covered
In sharp claimed range.
Claims (10)
1. a kind of mine double-layer dry type dust suction drill bit, which is characterized in that including the first drill bit, the second drill bit, connecting rod, core drill
Bar, planetary gear, planet carrier and planet carrier locking mechanism；
Before first drill bit is located at the second drill bit and it is fixed by the connecting rod on the inner wall of hollow drill front end.
Second drill bit is hollow cylinder, and front end is circular cone concave surface, has ring gear on inner wall；
There is external toothing on the outer wall of hollow drill front end；
Planet carrier is located at after the second drill bit and is looped around around hollow drill, the bottom phase of planet carrier locking mechanism and planet carrier
Even；
For planetary gear between ring gear and external toothing, ring gear, planetary gear, planet carrier and external toothing form planetary gear
System.
2. a kind of mine double-layer dry type dust suction drill bit according to claim 1, which is characterized in that the planet carrier locks machine
Structure is resistance rotor piece, and the resistance rotor piece is bored perpendicular to the hollow drill, the outer rim of the resistance rotor piece beyond described second
The periphery of head.
3. a kind of mine double-layer dry type dust suction drill bit according to claim 1, which is characterized in that first drill bit is circle
Cone has spiral drill lip on the circular conical surface of the first drill bit.
4. a kind of mine double-layer dry type dust suction drill bit according to claim 3, which is characterized in that divide on the spiral drill lip
It is furnished with wing.
5. a kind of mine double-layer dry type dust suction drill bit according to claim 1, which is characterized in that have on second drill bit
There is spiral groove.
6. a kind of mine double-layer dry type dust suction drill bit according to claim 1, which is characterized in that second drill bit and institute
Stating planetary wheel shaft upper end joint has the first annular recess, and the front end of the wheel shaft is caught in the first annular recess simultaneously
It can be rotated in the first annular recess.
7. a kind of mine double-layer dry type dust suction drill bit according to claim 1, which is characterized in that before the hollow drill
There is the second annular recess, second drill bit to have collar flange, the ring-type with second annular recess joint at end
Flange is caught in second annular recess and can be rotated in second annular recess.
8. a kind of mine double-layer dry type dust suction drill bit according to claim 1, which is characterized in that the planetary gear is 4
A, 4 planetary gear equidistantly distributeds are in the gap between the ring gear and the external toothing.
9. a kind of mine double-layer dry type dust suction drill bit according to claim 1, which is characterized in that the rear end of the connecting rod
With cross bar, the both ends of the cross bar are fixed on the inner wall of the hollow drill.
10. a kind of mine double-layer dry type dust suction drill bit according to claim 9, which is characterized in that the cross bar be 4,4
A cross bar is crossed as cross two-by-two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810576071.4A CN108678678B (en) | 2018-06-06 | 2018-06-06 | Mining double-layer dry dust collection drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810576071.4A CN108678678B (en) | 2018-06-06 | 2018-06-06 | Mining double-layer dry dust collection drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108678678A true CN108678678A (en) | 2018-10-19 |
| CN108678678B CN108678678B (en) | 2024-04-02 |
Family
ID=63810184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810576071.4A Active CN108678678B (en) | 2018-06-06 | 2018-06-06 | Mining double-layer dry dust collection drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108678678B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915602A (en) * | 2018-07-11 | 2018-11-30 | 江苏师范大学 | A kind of bilayer dust suction drill bit |
| CN112060357A (en) * | 2020-09-18 | 2020-12-11 | 周国华 | Building drilling equipment capable of discharging chips in hole |
| CN112227952A (en) * | 2020-10-31 | 2021-01-15 | 河南城建学院 | Trenchless directional drill bit |
| CN113006718A (en) * | 2021-01-26 | 2021-06-22 | 成英 | Engineering drilling and production integrated working line |
| CN114474411A (en) * | 2021-10-09 | 2022-05-13 | 山东华世力自动化科技有限公司 | High-hardness plate opening and edging system |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06341140A (en) * | 1993-02-04 | 1994-12-13 | Fusao Sakano | Construction method by which column-wall holes are bored within approximate line by 10-700mm from boundary by intermittent work and continuous wall, connection wall, butt-joint wall, superposed wall, and cut-off wall are erected by use of the hole, and these walls |
| CN1169765A (en) * | 1994-12-13 | 1998-01-07 | 沃尔托·伊罗马克 | A drilling method and bit assembly to realise method |
| JPH11117278A (en) * | 1997-10-14 | 1999-04-27 | Atec Yoshimura:Kk | Core tube sampler |
| JP2001140578A (en) * | 1999-11-15 | 2001-05-22 | Mitsubishi Materials Corp | Drilling tool |
| US20060283637A1 (en) * | 2005-06-20 | 2006-12-21 | Marcel Viel | Rotating dry drilling bit |
| CN101571030A (en) * | 2009-06-01 | 2009-11-04 | 南京捷嘉科技有限公司 | Multistage cutting guide and control drill bit |
| RU92900U1 (en) * | 2008-06-16 | 2010-04-10 | Александр Яковлевич Третьяк | STABILIZING TWO-STORY CUTTING CHIP |
| CN201531216U (en) * | 2009-11-02 | 2010-07-21 | 南京捷嘉科技有限公司 | Multistage cutting block-resistant guiding control drill bit |
| JP2010216130A (en) * | 2009-03-16 | 2010-09-30 | Univ Of Tsukuba | Excavator and drill bit unit |
| RU2010129126A (en) * | 2010-07-13 | 2012-01-20 | Государственное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет (Ново | STABILIZING TWO-STORY CUTTING CHIP |
| CN202417317U (en) * | 2011-12-08 | 2012-09-05 | 邵立峰 | Double-layer coring bit used for coal mine |
| US20130098689A1 (en) * | 2010-04-07 | 2013-04-25 | Dywidag-Systems International Gmbh | Two-part drilling tool for the percussive or rotary percussive drilling of holes in soil material or rock material |
| JP3184034U (en) * | 2013-01-15 | 2013-06-13 | 稔 富澤 | Container with excavation bit for burying high-level radioactive waste under the deep sea |
| CN103306606A (en) * | 2013-06-28 | 2013-09-18 | 中国地质大学（武汉） | Planetary gear train energy-saving dual-layer drill for drilling of deep oil gas well |
| CN103352659A (en) * | 2013-07-29 | 2013-10-16 | 河南理工大学 | Backpitch shattering and dust collecting drill bit |
| JP2014237939A (en) * | 2013-06-06 | 2014-12-18 | 株式会社シロタ | Center drilling excavator |
| CN105089506A (en) * | 2015-09-18 | 2015-11-25 | 洛阳中岩工程材料有限公司 | Double-layer cross-shaped self-drilling anchor bolt drill bit |
| CN105822228A (en) * | 2016-03-25 | 2016-08-03 | 柳超 | Double-speed variable-torque drill bit for drilling deep well |
| CN207315238U (en) * | 2017-08-14 | 2018-05-04 | 四川弘毅智慧知识产权运营有限公司 | A kind of PDC composite drill bits that can independently creep into |
| CN208777904U (en) * | 2018-06-06 | 2019-04-23 | 中国矿业大学 | A kind of mine double-layer dry type dust suction drill bit |
-
2018
- 2018-06-06 CN CN201810576071.4A patent/CN108678678B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06341140A (en) * | 1993-02-04 | 1994-12-13 | Fusao Sakano | Construction method by which column-wall holes are bored within approximate line by 10-700mm from boundary by intermittent work and continuous wall, connection wall, butt-joint wall, superposed wall, and cut-off wall are erected by use of the hole, and these walls |
| CN1169765A (en) * | 1994-12-13 | 1998-01-07 | 沃尔托·伊罗马克 | A drilling method and bit assembly to realise method |
| JPH11117278A (en) * | 1997-10-14 | 1999-04-27 | Atec Yoshimura:Kk | Core tube sampler |
| JP2001140578A (en) * | 1999-11-15 | 2001-05-22 | Mitsubishi Materials Corp | Drilling tool |
| US20060283637A1 (en) * | 2005-06-20 | 2006-12-21 | Marcel Viel | Rotating dry drilling bit |
| RU92900U1 (en) * | 2008-06-16 | 2010-04-10 | Александр Яковлевич Третьяк | STABILIZING TWO-STORY CUTTING CHIP |
| JP2010216130A (en) * | 2009-03-16 | 2010-09-30 | Univ Of Tsukuba | Excavator and drill bit unit |
| CN101571030A (en) * | 2009-06-01 | 2009-11-04 | 南京捷嘉科技有限公司 | Multistage cutting guide and control drill bit |
| CN201531216U (en) * | 2009-11-02 | 2010-07-21 | 南京捷嘉科技有限公司 | Multistage cutting block-resistant guiding control drill bit |
| US20130098689A1 (en) * | 2010-04-07 | 2013-04-25 | Dywidag-Systems International Gmbh | Two-part drilling tool for the percussive or rotary percussive drilling of holes in soil material or rock material |
| RU2010129126A (en) * | 2010-07-13 | 2012-01-20 | Государственное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет (Ново | STABILIZING TWO-STORY CUTTING CHIP |
| CN202417317U (en) * | 2011-12-08 | 2012-09-05 | 邵立峰 | Double-layer coring bit used for coal mine |
| JP3184034U (en) * | 2013-01-15 | 2013-06-13 | 稔 富澤 | Container with excavation bit for burying high-level radioactive waste under the deep sea |
| JP2014237939A (en) * | 2013-06-06 | 2014-12-18 | 株式会社シロタ | Center drilling excavator |
| CN103306606A (en) * | 2013-06-28 | 2013-09-18 | 中国地质大学（武汉） | Planetary gear train energy-saving dual-layer drill for drilling of deep oil gas well |
| CN103352659A (en) * | 2013-07-29 | 2013-10-16 | 河南理工大学 | Backpitch shattering and dust collecting drill bit |
| CN105089506A (en) * | 2015-09-18 | 2015-11-25 | 洛阳中岩工程材料有限公司 | Double-layer cross-shaped self-drilling anchor bolt drill bit |
| CN105822228A (en) * | 2016-03-25 | 2016-08-03 | 柳超 | Double-speed variable-torque drill bit for drilling deep well |
| CN207315238U (en) * | 2017-08-14 | 2018-05-04 | 四川弘毅智慧知识产权运营有限公司 | A kind of PDC composite drill bits that can independently creep into |
| CN208777904U (en) * | 2018-06-06 | 2019-04-23 | 中国矿业大学 | A kind of mine double-layer dry type dust suction drill bit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915602A (en) * | 2018-07-11 | 2018-11-30 | 江苏师范大学 | A kind of bilayer dust suction drill bit |
| CN112060357A (en) * | 2020-09-18 | 2020-12-11 | 周国华 | Building drilling equipment capable of discharging chips in hole |
| CN112227952A (en) * | 2020-10-31 | 2021-01-15 | 河南城建学院 | Trenchless directional drill bit |
| CN113006718A (en) * | 2021-01-26 | 2021-06-22 | 成英 | Engineering drilling and production integrated working line |
| CN114474411A (en) * | 2021-10-09 | 2022-05-13 | 山东华世力自动化科技有限公司 | High-hardness plate opening and edging system |
| CN114474411B (en) * | 2021-10-09 | 2023-12-01 | 山东华世力自动化科技有限公司 | High-hardness plate perforating and edging system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108678678B (en) | 2024-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108678678A (en) | A kind of mine double-layer dry type dust suction drill bit | |
| CN108086930A (en) | Soft rock stratum reacting cycle casing drilling tool and drilling process | |
| US3032129A (en) | Dust collecting drill steel and bit | |
| CN205713986U (en) | A kind of down-hole geological drilling Counterboring apparatus | |
| CN207813526U (en) | Soft rock stratum reacting cycle casing drilling tool | |
| CN108360979B (en) | Split single-cone bit | |
| CN104453707A (en) | Forming device and method of underground large-diameter horizontal rescue borehole for mine accidents | |
| CN208777904U (en) | A kind of mine double-layer dry type dust suction drill bit | |
| CN206530292U (en) | A kind of spinning water jet Counterboring apparatus | |
| US3092190A (en) | Large diameter earth drill | |
| CN103352659A (en) | Backpitch shattering and dust collecting drill bit | |
| CN105840118A (en) | Upward raise-boring machine chambering and stabilizing device and upward raise-boring machine | |
| CN109113570B (en) | Hydraulic fracturing weakening hard top plate drilling device | |
| CN203050511U (en) | Whirlwind type jet drill bit | |
| CN105604481B (en) | Multi power source way-type drilling unit for soft seam drilling | |
| CN109488210A (en) | A kind of bilayer drill bit | |
| CN209855729U (en) | Dry type drilling orifice dust removing device for underground coal mine | |
| CN109519125A (en) | A kind of self-locking typ quick-jointing reaming bit | |
| CN205314949U (en) | Prevent single action assembly device that inner tube assembly drops | |
| CN108278079B (en) | Strengthen cherry coal rock intensity layered cutting drilling method and drilling tool | |
| CN106837229A (en) | Particle stream flow coring apparatus | |
| CN113719239A (en) | Anti-jet hole combined damping drilling tool and using method thereof | |
| CN208945740U (en) | A kind of oil delivering unit for the processing of interior chip removal deep-hole | |
| US3907047A (en) | Integral junk basket for drill bit | |
| CN206967120U (en) | Vibratory sieve eccentric shaft Vehicle Processing special tooling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |