CN108590532A - A kind of coal mine open and close type drill bit - Google Patents
A kind of coal mine open and close type drill bit Download PDFInfo
- Publication number
- CN108590532A CN108590532A CN201810290690.7A CN201810290690A CN108590532A CN 108590532 A CN108590532 A CN 108590532A CN 201810290690 A CN201810290690 A CN 201810290690A CN 108590532 A CN108590532 A CN 108590532A
- Authority
- CN
- China
- Prior art keywords
- valve plate
- movable valve
- hollow boring
- boring bit
- bit body
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 239000000956 alloy Substances 0.000 claims abstract description 34
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 34
- 238000005553 drilling Methods 0.000 claims abstract description 32
- 210000000515 tooth Anatomy 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005065 mining Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery 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
- 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
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)
Abstract
A kind of coal mine open and close type drill bit,Including hollow boring bit body in a tubular form,One end of the hollow boring bit body is provided with the internal thread for being connect with drilling rod,The other end is provided with movable valve plate and multiple cutting tooths,Multiple cutting tooths are arranged along hollow boring bit body circumferencial direction uniform intervals,Described movable valve plate one end is hinged by axis pin and hollow boring bit body,The other end can be fastened by snap fastener and the card slot being arranged on hollow boring bit body,The snap fastener includes the spring being threaded through in movable valve plate along movable valve plate thickness direction and the steel ball in both ends of the spring is arranged,Steel ball is fixedly connected with spring,By making steel ball be detached from or being caught in card slot to realize the opening and closing of movable valve plate,The cutting tooth includes alloy cutting body,One end of the alloy cutting body is fixedly connected with hollow boring bit body,The first alloy cutting sheet is installed on the other end.
Description
Technical field
The present invention relates to coal mine machinery technical field more particularly to a kind of coal mine open and close type drill bits.
Background technology
Generated gas brings severe compromise to Safety of Coal Mine Production in progress of coal mining, therefore is exploiting
It needs to carry out gas pumping and dilution to Gas-bearing Coal Seams in the process.Gas pumping and diluted major way are to utilize brill at present
Hole machinery drills out several meters of drilling to hundreds of meters of depths on coal seam, then withdraws the drilling rod of drilling machine and drill bit extraction, then
It will be penetrated in drilling under gas drainage pipe, gas drainage pipe connects gas pumping station, by gas drainage under suction in ground, to reduce
Seam gas content.
In practical operation, due to drilling it sometimes appear that the situation that collapses, causes gas drainage pipe not descend to be inserted into drilling.
Production efficiency is reduced, very big inconvenience is brought to production.
Invention content
The technical issues of in order to solve that after drilling is collapsed gas drainage pipe can not be inserted into, the object of the present invention is to provide one kind
Coal mine open and close type drill bit does not have to extracting drill bit into withdrawal out from drilling, so that gas drainage pipe is pierced by directly through drill bit, greatly
Production efficiency and one-tenth porosity are improved greatly, production offers convenience to mining.
The technical solution adopted in the present invention is：A kind of coal mine open and close type drill bit, including hollow boring bit body in a tubular form,
One end of the hollow boring bit body is provided with the internal thread for being connect with drilling rod, and the other end is provided with movable valve plate and multiple cuts
Tooth is cut, multiple cutting tooths are arranged along hollow boring bit body circumferencial direction uniform intervals, and described movable valve plate one end passes through axis pin and sky
Heart bit body is hinged, and the other end can be fastened by snap fastener and the card slot being arranged on hollow boring bit body, the engaging machine
Structure includes the spring being threaded through in movable valve plate along movable valve plate thickness direction and the steel ball in both ends of the spring, steel ball and bullet is arranged
Spring is fixedly connected, and includes alloy by making steel ball be detached from or be caught in card slot to realize the opening and closing of movable valve plate, the cutting tooth
One end of cutting body, the alloy cutting body is fixedly connected with hollow boring bit body, and the first alloy is installed on the other end and is cut
Pitch cutting.
The second alloy cutting sheet is provided in the movable valve plate.
There are three the multiple cutting tooth is total.
Compared with prior art, the invention has the advantages that：
One, a kind of coal mine open and close type drill bit of the present invention, after being drilled drilling using the drill bit, without extracting drill bit out
It withdraws, but gas drainage pipe is made to pass through hollow boring bit body and open-top movable valve plate, and then the gas in coal seam is extracted out, avoid
It due to drill bit extraction causes drilling to be collapsed causes that gas drainage pipe can not be transferred, substantially increases production efficiency and one-tenth porosity, give
Production of mining offers convenience；
Two, there is the second alloy cutting sheet in movable valve plate, enhance the boring capacity of drill bit and improve drilling efficiency；
Three, the snap fastener in the present invention and card slot are used cooperatively, and structure is more rationally compact, not only so that gas drainage under suction tube capacity
It is easily pierced by drill bit, and drill bit overall performance during turn hole is stablized, uniform force.
Description of the drawings
Fig. 1 is the structural schematic diagram a of the present invention；
Fig. 2 is the structural schematic diagram b of the present invention.
Specific implementation mode
It elaborates in the following with reference to the drawings and specific embodiments to the present invention.
Embodiment 1
As shown in Fig. 1 to 2 figures, a kind of coal mine open and close type drill bit, including hollow boring bit body 1 in a tubular form, the hollow boring bit
One end of body 1 is provided with the internal thread 2 for being connect with drilling rod, and the other end is provided with movable valve plate 3 and multiple cutting tooths 4, more
A cutting tooth 4 is arranged along 1 circumferencial direction uniform intervals of hollow boring bit body.3 one end of the movable valve plate passes through axis pin 5 and core drill
Head body 1 is hinged, and the other end can be fastened by snap fastener 6 and the card slot being arranged on hollow boring bit body 17.
The snap fastener 6 includes spring 601 and the setting being threaded through along 3 thickness direction of movable valve plate in movable valve plate 3
Steel ball 602 at 601 both ends of spring, steel ball 602 are fixedly connected with spring 601, by making steel ball 602 be detached from or be caught in card slot 7
To realize the opening and closing of movable valve plate 3.
The card slot 7 includes two hemispherical grooves to match with steel ball 602, is provided on the hollow boring bit body 1
When closing movable valve plate 3, one end of movable valve plate 3 is placed in cuboid groove for cuboid groove, two hemisphericals
Groove is arranged in the both sides of cuboid groove and is penetrated through with cuboid groove.
Drill bit needs to close movable valve plate 3 in drilling, i.e., by the not one end hinged with hollow boring bit body of movable valve plate 3
Lid is closed into the cuboid groove on hollow boring bit body 1, at this time elastic force of two steel balls 602 of snap fastener 6 in spring 601
It is stretched into hemispherical groove under pushing, i.e., steel ball 602 is caught in card slot 7.
It needs to open movable valve plate 3 when gas in coal seam is extracted out, gas drainage pipe is passed through into hollow boring bit body
1, and movable valve plate 3 is withstood, under the thrust of gas drainage pipe, the steel ball 602 of snap fastener 6 is detached from card slot 7, movable valve plate 3
Far from cuboid groove, and then gas drainage pipe is made to be pierced by drill bit.
The cutting tooth 4 includes alloy cutting body 401, and one end and the hollow boring bit body 1 of the alloy cutting body 401 are fixed
It connects, the first alloy cutting sheet 402 is installed on the other end.
It is provided with the second alloy cutting sheet 8 in the movable valve plate 3, substantially increases drilling efficiency.
There are three the multiple cutting tooth 4 is total, the structure of drill bit is made more to stablize.
Embodiment 2
As shown in Fig. 1 to 2 figures, a kind of coal mine open and close type drill bit, including hollow boring bit body 1 in a tubular form, the hollow boring bit
One end of body 1 is provided with the internal thread 2 for being connect with drilling rod, and the other end is provided with movable valve plate 3 and multiple cutting tooths 4, more
A cutting tooth 4 is arranged along 1 circumferencial direction uniform intervals of hollow boring bit body.3 one end of the movable valve plate passes through axis pin 5 and core drill
Head body 1 is hinged, and the other end can be fastened by snap fastener 6 and the card slot being arranged on hollow boring bit body 17.
The snap fastener 6 includes spring 601 and the setting being threaded through along 3 thickness direction of movable valve plate in movable valve plate 3
Steel ball 602 at 601 both ends of spring, steel ball 602 are fixedly connected with spring 601, by making steel ball 602 be detached from or be caught in card slot 7
To realize the opening and closing of movable valve plate 3.
The card slot 7 includes two hemispherical grooves to match with steel ball 602, is provided on the hollow boring bit body 1
When closing movable valve plate 3, one end of movable valve plate 3 is placed in cuboid groove for cuboid groove, two hemisphericals
Groove is arranged in the both sides of cuboid groove and is penetrated through with cuboid groove.
Drill bit needs to close movable valve plate 3 in drilling, i.e., by the not one end hinged with hollow boring bit body of movable valve plate 3
Lid is closed into the cuboid groove on hollow boring bit body 1, at this time elastic force of two steel balls 602 of snap fastener 6 in spring 601
It is stretched into hemispherical groove under pushing, i.e., steel ball 602 is caught in card slot 7.
It needs to open movable valve plate 3 when gas in coal seam is extracted out, gas drainage pipe is passed through into hollow boring bit body
1, and movable valve plate 3 is withstood, under the thrust of gas drainage pipe, the steel ball 602 of snap fastener 6 is detached from card slot 7, movable valve plate 3
Far from cuboid groove, and then gas drainage pipe is made to be pierced by drill bit.
The cutting tooth 4 includes alloy cutting body 401, and one end and the hollow boring bit body 1 of the alloy cutting body 401 are fixed
It connects, is installed with the first alloy cutting sheet 402 on the other end, the first alloy cutting sheet 402 is rounded.
It is provided with the second alloy cutting sheet 8 in the movable valve plate 3, substantially increases drilling efficiency, the cutting of the second alloy
Piece 8 is rounded.
There are three the multiple cutting tooth 4 is total, the structure of drill bit is made more to stablize.
Embodiment 3
As shown in Fig. 1 to 2 figures, a kind of coal mine open and close type drill bit, including hollow boring bit body 1 in a tubular form, the hollow boring bit
One end of body 1 is provided with the internal thread 2 for being connect with drilling rod, and the other end is provided with movable valve plate 3 and multiple cutting tooths 4, more
A cutting tooth 4 is arranged along 1 circumferencial direction uniform intervals of hollow boring bit body.3 one end of the movable valve plate passes through axis pin 5 and core drill
Head body 1 is hinged, and the other end can be fastened by snap fastener 6 and the card slot being arranged on hollow boring bit body 17.
The snap fastener 6 includes spring 601 and the setting being threaded through along 3 thickness direction of movable valve plate in movable valve plate 3
Steel ball 602 at 601 both ends of spring, steel ball 602 are fixedly connected with spring 601, by making steel ball 602 be detached from or be caught in card slot 7
To realize the opening and closing of movable valve plate 3.
The card slot 7 includes two hemispherical grooves to match with steel ball 602, is provided on the hollow boring bit body 1
When closing movable valve plate 3, one end of movable valve plate 3 is placed in cuboid groove for cuboid groove, two hemisphericals
Groove is arranged in the both sides of cuboid groove and is penetrated through with cuboid groove.
Drill bit needs to close movable valve plate 3 in drilling, i.e., by the not one end hinged with hollow boring bit body of movable valve plate 3
Lid is closed into the cuboid groove on hollow boring bit body 1, at this time elastic force of two steel balls 602 of snap fastener 6 in spring 601
It is stretched into hemispherical groove under pushing, i.e., steel ball 602 is caught in card slot 7.
It needs to open movable valve plate 3 when gas in coal seam is extracted out, gas drainage pipe is passed through into hollow boring bit body
1, and movable valve plate 3 is withstood, under the thrust of gas drainage pipe, the steel ball 602 of snap fastener 6 is detached from card slot 7, movable valve plate 3
Far from cuboid groove, and then gas drainage pipe is made to be pierced by drill bit.
The cutting tooth 4 includes alloy cutting body 401, and one end and the hollow boring bit body 1 of the alloy cutting body 401 weld
It connects, the first alloy cutting sheet 402 is installed on the other end, the first alloy cutting sheet 402 is rounded.
It is provided with the second alloy cutting sheet 8 in the movable valve plate 3, substantially increases drilling efficiency, the cutting of the second alloy
Piece 8 is rounded.
There are three the multiple cutting tooth 4 is total, the structure of drill bit is made more to stablize.
Embodiment 4
As shown in Fig. 1 to 2 figures, a kind of coal mine open and close type drill bit, including hollow boring bit body 1 in a tubular form, the hollow boring bit
One end of body 1 is provided with the internal thread 2 for being connect with drilling rod, and the other end is provided with movable valve plate 3 and multiple cutting tooths 4, more
A cutting tooth 4 is arranged along 1 circumferencial direction uniform intervals of hollow boring bit body.3 one end of the movable valve plate passes through axis pin 5 and core drill
Head body 1 is hinged, and the other end can be fastened by snap fastener 6 and the card slot being arranged on hollow boring bit body 17.
It is provided with the first through hole passed through for axis pin 5 in movable valve plate 3, hinged seat is installed on hollow boring bit body 1,
The second through-hole passed through for axis pin 5 is provided on hinged seat, first through hole is corresponding with the second lead to the hole site, and axis pin 5 passes through the
One with the second through-hole by being arranged.
The snap fastener 6 includes spring 601 and the setting being threaded through along 3 thickness direction of movable valve plate in movable valve plate 3
Steel ball 602 at 601 both ends of spring, steel ball 602 are fixedly connected with spring 601, by making steel ball 602 be detached from or be caught in card slot 7
To realize the opening and closing of movable valve plate 3.
The card slot 7 includes two hemispherical grooves to match with steel ball 602, is provided on the hollow boring bit body 1
When closing movable valve plate 3, one end of movable valve plate 3 is placed in cuboid groove for cuboid groove, two hemisphericals
Groove is arranged in the both sides of cuboid groove and is penetrated through with cuboid groove.
Drill bit needs to close movable valve plate 3 in drilling, i.e., by the not one end hinged with hollow boring bit body of movable valve plate 3
Lid is closed into the cuboid groove on hollow boring bit body 1, at this time elastic force of two steel balls 602 of snap fastener 6 in spring 601
It is stretched into hemispherical groove under pushing, i.e., steel ball 602 is caught in card slot 7.
It needs to open movable valve plate 3 when gas in coal seam is extracted out, gas drainage pipe is passed through into hollow boring bit body
1, and movable valve plate 3 is withstood, under the thrust of gas drainage pipe, the steel ball 602 of snap fastener 6 is detached from card slot 7, movable valve plate 3
Far from cuboid groove, and then gas drainage pipe is made to be pierced by drill bit.
The cutting tooth 4 includes alloy cutting body 401, and one end and the hollow boring bit body 1 of the alloy cutting body 401 are fixed
It connects, is installed with the first alloy cutting sheet 402 on the other end, the first alloy cutting sheet 402 is rounded.
It is provided with the second alloy cutting sheet 8 in the movable valve plate 3, substantially increases drilling efficiency, the cutting of the second alloy
Piece 8 is rounded.
There are three the multiple cutting tooth 4 is total, the structure of drill bit is made more to stablize.
Above example based on the technical solution of the present invention, gives detailed embodiment and specifically operated
Journey, but protection scope of the present invention is not limited to the above embodiments.
Gas drainage pipe directly can be passed through interior sky by the present invention in the case of not drilling rod in recovery holes after drilling is formed
Drilling rod and switching regulator drill bit under penetrate drilling, drilling rod and drill bit are then exited into drilling one by one, effectively improve working efficiency
And one-tenth porosity.
Claims (3)
1. a kind of coal mine open and close type drill bit, including hollow boring bit body in a tubular form（1）, the hollow boring bit body（1）One end
It is provided with the internal thread for being connect with drilling rod（2）, the other end is provided with movable valve plate（3）With multiple cutting tooths（4）, multiple to cut
Cut tooth（4）Along hollow boring bit body（1）Circumferencial direction uniform intervals are arranged, it is characterised in that：The movable valve plate（3）One end passes through
Axis pin（5）With hollow boring bit body（1）Hinged, the other end can pass through snap fastener（6）With setting in hollow boring bit body（1）On card
Slot（7）It fastens, the snap fastener（6）Including along movable valve plate（3）Thickness direction is threaded through movable valve plate（3）On spring
（601）With setting in spring（601）The steel ball at both ends（602）, steel ball（602）With spring（601）It is fixedly connected, by making steel ball
（602）It is detached from or is caught in card slot（7）To realize movable valve plate（3）Opening and closing, the cutting tooth（4）Including alloy cutting body
（401）, the alloy cutting body（401）One end and hollow boring bit body（1）It is fixedly connected, first is installed on the other end
Alloy cutting sheet（402）.
2. a kind of coal mine open and close type drill bit as described in claim 1, it is characterised in that：The movable valve plate（3）Upper setting
There is the second alloy cutting sheet（8）.
3. a kind of coal mine open and close type drill bit as described in claim 1, it is characterised in that：The multiple cutting tooth（4）It is shared
Three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810290690.7A CN108590532A (en) | 2018-03-30 | 2018-03-30 | A kind of coal mine open and close type drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810290690.7A CN108590532A (en) | 2018-03-30 | 2018-03-30 | A kind of coal mine open and close type drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108590532A true CN108590532A (en) | 2018-09-28 |
Family
ID=63625311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810290690.7A Pending CN108590532A (en) | 2018-03-30 | 2018-03-30 | A kind of coal mine open and close type drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108590532A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736877A (en) * | 2019-01-09 | 2019-05-10 | 淮南矿业(集团)有限责任公司 | A kind of concordant drilling pipe-following drilling mash gas extraction construction method |
| CN111877990A (en) * | 2020-08-18 | 2020-11-03 | 沈阳北方交通重工集团有限公司 | Open-close type reaming bit with guide column for screen descending |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704852A (en) * | 2012-05-25 | 2012-10-03 | 中煤科工集团西安研究院 | Hinged drill with openable and closable inner core |
| CN204457449U (en) * | 2015-02-01 | 2015-07-08 | 安徽锐远钻探设备制造有限公司 | One can open and close type diamond compact bit |
| CN106703703A (en) * | 2017-02-14 | 2017-05-24 | 中煤科工集团西安研究院有限公司 | Openable-closeable drill bit |
| CN206554806U (en) * | 2017-03-10 | 2017-10-13 | 张吉亮 | Drawing-off gas hole platybasic type inner via hole drill bit |
| CN208294435U (en) * | 2018-03-30 | 2018-12-28 | 平顶山天成钻机钻具制造有限公司 | A kind of coal mine open and close type drill bit |
-
2018
- 2018-03-30 CN CN201810290690.7A patent/CN108590532A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704852A (en) * | 2012-05-25 | 2012-10-03 | 中煤科工集团西安研究院 | Hinged drill with openable and closable inner core |
| CN204457449U (en) * | 2015-02-01 | 2015-07-08 | 安徽锐远钻探设备制造有限公司 | One can open and close type diamond compact bit |
| CN106703703A (en) * | 2017-02-14 | 2017-05-24 | 中煤科工集团西安研究院有限公司 | Openable-closeable drill bit |
| CN206554806U (en) * | 2017-03-10 | 2017-10-13 | 张吉亮 | Drawing-off gas hole platybasic type inner via hole drill bit |
| CN208294435U (en) * | 2018-03-30 | 2018-12-28 | 平顶山天成钻机钻具制造有限公司 | A kind of coal mine open and close type drill bit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736877A (en) * | 2019-01-09 | 2019-05-10 | 淮南矿业(集团)有限责任公司 | A kind of concordant drilling pipe-following drilling mash gas extraction construction method |
| CN111877990A (en) * | 2020-08-18 | 2020-11-03 | 沈阳北方交通重工集团有限公司 | Open-close type reaming bit with guide column for screen descending |
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