CN108678678B - Mining double-layer dry dust collection drill bit - Google Patents
Mining double-layer dry dust collection drill bit Download PDFInfo
- Publication number
- CN108678678B CN108678678B CN201810576071.4A CN201810576071A CN108678678B CN 108678678 B CN108678678 B CN 108678678B CN 201810576071 A CN201810576071 A CN 201810576071A CN 108678678 B CN108678678 B CN 108678678B
- Authority
- CN
- China
- Prior art keywords
- drill bit
- dust collection
- rod
- dry dust
- drill
- 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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Links
- 239000000428 dust Substances 0.000 title claims abstract description 26
- 238000005065 mining Methods 0.000 title claims abstract description 23
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 11
- 239000011435 rock Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 2
- 238000005553 drilling Methods 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 5
- 239000002817 coal dust Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000005641 tunneling Effects 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 mining double-layer dry dust collection drill bit comprises a first drill bit, a second drill bit, a connecting rod, a hollow drill rod, a planetary gear, a planetary carrier and a planetary carrier locking mechanism. The first drill bit is positioned in front of the second drill bit and is fixed on the inner wall of the front end of the hollow drill rod through a connecting rod. The front end of the second drill bit is a conical concave surface, an inner gear ring is arranged on the inner wall of the second drill bit, and an outer gear ring is arranged on the outer wall of the front end of the second drill bit. The planet carrier is arranged behind the second drill bit and surrounds the hollow drill rod, and the planet carrier locking mechanism is connected with the bottom of the planet carrier. The inner gear ring, the planetary gear, the planet carrier and the outer gear ring form a planetary gear train. The mining double-layer dry dust collection drill bit provided by the invention has the advantages that the first drill bit and the second drill bit with opposite rotation directions are arranged, and the crushing effect is good. The gap in the drill bit gradually widens from outside to inside, and no blockage occurs. The tip part of the second drill bit is contacted with the coal rock, so that the massive coal bodies can be crushed, the crushing efficiency is high, the drill bit can be prevented from being blocked by the massive coal bodies, and the pore forming speed and pore forming quality are improved.
Description
Technical Field
The invention relates to mining equipment, in particular to a mining double-layer dry dust collection drill bit.
Background
In a soft and protruding coal seam of a coal mine, the conditions of hole collapse, hole blockage, spray hole blockage, top drilling, blockage of a filter element in a drill bit cavity and the like easily occur in the working process by adopting a conventional drilling device and method, and gas and coal dust explosion risks in the working environment of a working face can be caused by wind power slag discharge in the drilling process. In summary, conventional work devices (including drill bits) are prone to accidents during use, have low work efficiency and present a hazard to the operator.
Disclosure of Invention
The invention aims to provide a mining double-layer dry dust collection drill bit which is efficient in rock breaking and free from blockage.
In order to achieve the above object, the present invention has the following technical scheme:
a mining double-layer dry dust collection drill bit comprises a first drill bit, a second drill bit, a connecting rod, a hollow drill rod, a planetary gear, a planetary carrier and a planetary carrier locking mechanism. The first drill bit is positioned in front of the second drill bit and is fixed on the inner wall of the front end of the hollow drill rod through a connecting rod. The second drill bit is a hollow cylinder, the front end of the second drill bit is a conical concave surface, an inner gear ring is arranged on the inner wall of the second drill bit, and an outer gear ring is arranged on the outer wall of the front end of the hollow drill rod. The planet carrier is arranged behind the second drill bit and surrounds the hollow drill rod, and the planet carrier locking mechanism is connected with the bottom of the planet carrier. The planetary gear is arranged between the inner gear ring and the outer gear ring, and the inner gear ring, the planetary gear, the planet carrier and the outer gear ring form a planetary gear train.
Preferably, the planet carrier locking mechanism is a rotation blocking blade which is perpendicular to the hollow drill rod and extends out of the second drill bit.
Preferably, the first drill bit is a cone, and the conical surface of the first drill bit is provided with an auger blade.
Preferably, the auger blade is provided with blades.
Preferably, the second drill bit has a helical flute thereon.
Preferably, the joint of the second drill bit and the upper end of the wheel shaft of the planetary gear is provided with a first annular groove, and the front end of the wheel shaft is clamped into the first annular groove and can rotate in the first annular groove.
Preferably, the top end of the hollow drill rod is provided with a second annular groove, an annular flange is arranged at the joint of the second drill bit and the second annular groove, and the annular flange is clamped into the second annular groove and can rotate in the second annular groove.
Preferably, the number of the planetary gears is 4, and the 4 planetary gears are distributed in the gap between the inner gear ring and the outer gear ring at equal intervals.
Preferably, the rear end of the connecting rod is provided with a cross rod, and two ends of the cross rod are fixed on the inner wall of the hollow drill rod.
Preferably, the number of the cross bars is 4, and the 4 cross bars are crossed into a cross.
Compared with the prior art, the invention has the beneficial effects that: the mining double-layer dry dust collection drill bit provided by the invention has the advantages that the first drill bit and the second drill bit which are opposite in rotation direction are arranged, so that the crushing effect is better; the front end of the second drill bit is provided with a conical concave surface, and a gap in the dust collection drill bit is gradually widened from outside to inside, so that blockage can not occur; the tip part of the second drill bit is contacted with the coal rock, so that the massive coal bodies can be crushed, the crushing efficiency is higher, the massive coal bodies can be prevented from blocking the dust collection drill bit, the hole forming speed and the hole forming quality are improved, and the maintenance cost, the labor cost and the time cost in the drilling operation are reduced.
Drawings
FIG. 1 is a cross-sectional view of a mining double-layer dry dust collection drill bit according to an embodiment of the present invention;
FIG. 2 is a top view of a mining dual layer dry dust extraction drill according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a planetary gear train of a mining double-layer dry dust collection drill bit according to an embodiment of the invention;
FIG. 4 is a detail view of the junction of the planetary gear, the second drill bit and the hollow drill shaft according to an embodiment of the present invention;
FIG. 5 is a schematic view illustrating the relative positions of the annular baffle and the second annular flange according to an embodiment of the present invention;
1-first drill bit in fig. 1-5 above; 101-an auger blade; 2-a second drill bit; 201-spiral grooves; 202-a first annular groove; 203-a first annular flange; 204-a second annular flange; 3-connecting rods; 301-a cross bar; 4-hollow drill rod; 401-a second annular groove; 5-planetary gears; 501-wheel axle; 502-an annular baffle; 6-a planet carrier; 7-anti-rotation blade.
The specific embodiment is as follows:
the invention is further described below with reference to the accompanying drawings.
Examples
As shown in fig. 1, 2 and 3, the mining double-layer dry dust collection drill bit is of an axisymmetric structure and comprises a first drill bit 1, a second drill bit 2, a connecting rod 3, a hollow drill rod 4, 4 planetary gears 5, a planetary carrier 6 and a rotation-preventing blade 7. The first drill bit 1 is positioned before the second drill bit 2, and is a cone, the conical surface is provided with an auger blade 101, and the auger blade 101 is provided with a blade. The rear end of the connecting rod 3 is provided with 4 cross bars 301,4, the cross bars 301 are crossed into a cross, two ends of the cross bars 301 are welded or screwed on the inner wall of the hollow drill rod 4, an axial passage which is penetrated front and back is arranged in the hollow drill rod 4, and the diameter of the second drill bit 2 is larger than that of the hollow drill rod 4.
The second drill 2 is a hollow cylinder, the front end of which is a conical concave surface, and the conical concave surface is provided with a spiral groove 201. Because the gap between the first drill bit 1 and the second drill bit 2 is gradually widened from outside to inside, the inside of the drill bit is not easy to be blocked, and massive coal rock can only enter the hollow drill rod 4 after being crushed by the second drill bit 2, so that the channel in the drill bit is prevented from being blocked, and the tunneling efficiency is greatly improved.
The inner wall of the second drill bit 2 is provided with an inner gear ring, and the outer wall of the front end of the hollow drill rod 4 is provided with an outer gear ring. The planet carrier 6 is located behind the second drill bit 2 and surrounds the hollow drill rod 4 but is not in contact with the hollow drill rod 4.
The 4 planetary gears 5 are distributed in the gap between the inner gear ring and the outer gear ring at equal intervals, and the inner gear ring, the planetary gears 5, the planet carrier 6 and the outer gear ring form a planetary gear train. The bottom of the axle 501 of the planetary gear 5 is fixed to the planet carrier 6, and the rotation preventing blade 7 is located at the bottom of the planet carrier 6 and perpendicular to the hollow drill rod 4, and a part of the rotation preventing blade 7 protrudes out of the second drill bit 2.
As shown in fig. 4, the joint of the second drill 2 and the upper end of the axle 501 of the planetary gear 5 is provided with a first annular groove 202, the front end of the axle 501 is clamped into the first annular groove 202, when the second drill 2 rotates, the axle 501 rotates in the first annular groove 202, and the first annular groove 202 and the locked planet carrier 6 fix the axle 501 of the planetary gear 5, so that the stability of the planetary gear 5 can be ensured. The top end of the hollow drill rod 4 is provided with a second annular groove 401, a first annular flange 203 is arranged at the joint of the second drill bit 2 and the second annular groove 401, the first annular flange 203 is clamped into the second annular groove 401 and rotates in the second annular groove 401 along with the rotation of the second drill bit 2, so that the second drill bit 2 can stably run and can synchronously advance along with the hollow drill hole 4.
As shown in fig. 5, a second annular flange 204 perpendicular to the axle 501 can be added at the position where the second drill bit 2 is attached to the bottom of the axle 501, an annular baffle 502 perpendicular to the axle 501 is added on the axle 501, and the annular baffle 502 is clamped on the second annular flange 204, so that the planet gears 5 are clamped between the first annular groove 202 and the second annular flange 204 of the second drill bit 2, and the planet gears 5 and the planet carrier 6 can synchronously advance along with the second drill bit 2, and the annular baffle 502 can also prevent dust from entering between the inner gear ring and the outer gear ring.
During drilling, the drilling resistance blade 7 is embedded into the coal rock, so that the planet carrier 6 is locked, and the planet gear 5 becomes an idler wheel. When the hollow drill rod 4 drills, the first drill bit 1 rotates coaxially with the hollow drill rod 4, and the second drill bit 2 rotates in the opposite direction to the first drill bit 1. The first drill bit 1 breaks and cuts coal rock, and power is provided by the hollow drill rod 4. The coal dust enters the axial channel of the hollow drill rod 4 through the spiral drill blade 101, fine dust generated in the drilling process is pumped out by negative pressure in the hollow drill rod 4, large-particle ore blocks are crushed into small particles by the second drill bit 2 and are pressed into the hollow drill rod 4 by the spiral grooves 201 reversed on the small-particle ore blocks, and finally centralized processing is carried out, so that the problem that the inner hole of the hollow drill rod 4 is blocked by large-particle coal dust or the large-particle coal dust is blocked in an annular space between the hollow drill rod 4 and a hole wall to cause hole blocking, hole collapse, spray holes and top drilling is avoided.
The above embodiments are only for illustrating the technical solution of the present invention, and it should be understood by those skilled in the art that although the present invention has been described in detail with reference to the above embodiments: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, which is intended to be encompassed by the claims.
Claims (10)
1. The mining double-layer dry dust collection drill bit is characterized by comprising a first drill bit, a second drill bit, a connecting rod, a hollow drill rod, a planetary gear, a planetary carrier and a planetary carrier locking mechanism; the first drill bit is positioned in front of the second drill bit and is fixed on the inner wall of the front end of the hollow drill rod through a connecting rod; the second drill bit is a hollow cylinder, the front end of the second drill bit is a conical concave surface, and an inner gear ring is arranged on the inner wall of the second drill bit; an outer gear ring is arranged on the outer wall of the front end of the hollow drill rod; the planet carrier is positioned behind the second drill bit and surrounds the hollow drill rod, and the planet carrier locking mechanism is connected with the bottom of the planet carrier; the planetary gear is positioned between the inner gear ring and the outer gear ring, and the inner gear ring, the planetary gear, the planetary carrier and the outer gear ring form a planetary gear train; the front end of the second drill bit is provided with a conical concave surface, and a hole which gradually widens from outside to inside is formed between the second drill bit and the first drill bit.
2. The mining double-layer dry dust collection drill bit according to claim 1, wherein the planet carrier locking mechanism is a rotation blocking blade, the rotation blocking blade is perpendicular to the hollow drill rod, and the outer edge of the rotation blocking blade exceeds the outer periphery of the second drill bit.
3. The mining double-layer dry dust collection drill bit according to claim 1, wherein the first drill bit is a cone, and the conical surface of the first drill bit is provided with an auger blade.
4. A mining double-layer dry dust absorption drill bit according to claim 3, wherein blades are distributed on the auger blade.
5. The mining double-layer dry dust collection drill bit according to claim 1, wherein the second drill bit is provided with a spiral groove.
6. The mining double-layer dry dust collection drill bit according to claim 1, wherein a first annular groove is formed at the joint of the second drill bit and the upper end of the wheel shaft of the planetary gear, and the front end of the wheel shaft is clamped into and can rotate in the first annular groove.
7. The mining double-layer dry dust collection drill bit according to claim 1, wherein a second annular groove is formed in the front end of the hollow drill rod, an annular flange is formed at the joint of the second drill bit and the second annular groove, and the annular flange is clamped into the second annular groove and can rotate in the second annular groove.
8. The mining double-layer dry dust collection drill bit according to claim 1, wherein the number of the planetary gears is 4, and the 4 planetary gears are distributed in a gap between the inner gear ring and the outer gear ring at equal intervals.
9. The mining double-layer dry dust collection drill bit according to claim 1, wherein the rear end of the connecting rod is provided with a cross rod, and two ends of the cross rod are fixed on the inner wall of the hollow drill rod.
10. The mining double-layer dry dust collection drill bit according to claim 9, wherein the number of the cross bars is 4, and the 4 cross bars are crossed into a cross.
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 CN108678678A (en) | 2018-10-19 |
| CN108678678B true 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) |
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| CN108915602B (en) * | 2018-07-11 | 2020-11-24 | 江苏师范大学 | Double-layer dust-absorbing drill bit |
| CN112060357B (en) * | 2020-09-18 | 2022-11-01 | 北京理工北阳爆破工程技术有限责任公司 | 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 |
| 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 |
| CN115284453A (en) * | 2022-09-08 | 2022-11-04 | 青岛新华友建工集团股份有限公司 | Double-drill-bit type building wall drilling device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108678678A (en) | 2018-10-19 |
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