CN108316967A - Aspirate drive-type diameter changing drilling tool - Google Patents
Aspirate drive-type diameter changing drilling tool Download PDFInfo
- Publication number
- CN108316967A CN108316967A CN201810325733.0A CN201810325733A CN108316967A CN 108316967 A CN108316967 A CN 108316967A CN 201810325733 A CN201810325733 A CN 201810325733A CN 108316967 A CN108316967 A CN 108316967A
- Authority
- CN
- China
- Prior art keywords
- drilling rod
- telescopic sleeve
- drilling
- bearing
- dynamic bearing
- 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.)
- Withdrawn
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 66
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 12
- 239000003245 coal Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005070 sampling 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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- 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
- E21B6/00—Drives for drilling with combined rotary and percussive action
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of suction drive-type diameter changing drilling tools, and telescopic sleeve is connected in the rear end of drilling rod, and the telescopic sleeve movable set is on the inside of drilling rod front end；Be uniformly arranged dynamic bearing on the periphery lateral wall of telescopic sleeve, be uniformly arranged on the periphery lateral wall of drilling rod front end it is corresponding with dynamic bearing determine bearing, in dynamic bearing and determine that reducing drill body is installed between bearing；The madial wall of telescopic sleeve is provided with annular slot and combination conical closure body is installed；The present invention has the function of commonly to creep into and reducing drilling function, reducing only need offer negative-pressure ward power can be realized when switching, and reducing is simple to operate.Structure simplifies, highly practical, non-maintaining.
Description
Technical field：
The invention belongs to coal mine drilling tool technical fields, and in particular to a kind of suction drive-type diameter changing drilling tool.
Background technology：
When coal mine gas drainage works, the drilling in coal seam is needed, when coal is soft, crustal stress is higher or is adopted shadow
It rings, drilling will appear the different degrees of hole phenomenon that collapses, and can not be taken out in hole by drill bit is stuck, not only delay production, Er Qiezao
At unnecessary economic loss, reaming bit type is less at present, has a single function, can only the reaming when piercing, due to bit head
Point diameter cannot change, and when leg bores, the problem of meeting bit freezing, can only be taken out by way of extracting by force, and not
It can guarantee that success, another reaming bit are that blade is opened when moving back brill, expand bore diameter, but due to construct twice back and forth,
Working efficiency is low.The utility model patent " diameter changeable drill bit " of 202596582 U of Publication No. CN is although set detachable bit
Location structure is set, complicated recorded in the patent document, drill bit internal cannot achieve water transport channel, it is difficult to reach ideal
Reaming effect.Moreover, the location structure is the positioning principle of the similar umbrella of sampling, but locking member cannot be completely by detachable bit
It is locked, otherwise need that there are one the unlocking actions goed deep into inside drill body.Detachable bit is stablized so the program can not reach
The function of positioning.
Invention content：
The scheme recorded for defect existing for the simple drill for being currently used for coal mine field and existing variable diameter drill open source literature
The complicated and big problem of operation difficulty, the present invention provide a kind of can be realized by way of control and suck and drive realization reducing dynamic
The diameter changing drilling tool of work.
Scheme is used by the present invention solves its technical problem：A kind of suction drive-type diameter changing drilling tool, including drilling rod and
Drill bit and reducing drill body and running part are connected with telescopic sleeve in the rear end of drilling rod, and the telescopic sleeve movable set is in brill
Bar leading inside；It is uniformly arranged dynamic bearing on the periphery lateral wall of telescopic sleeve, on the periphery lateral wall of drilling rod front end
Be uniformly arranged it is corresponding with dynamic bearing determine bearing, on the dynamic bearing by axis pin be hinged with bore piece supporter, respectively bore piece
Brill piece is distributed in the leading flank of supporter, determines to be hinged with auxiliary support bar, each auxiliary support bar by axis pin on bearing described
End be hinged on rear side of corresponding brill piece supporter by axis pin respectively；The madial wall of the telescopic sleeve is provided with annular
Card slot has been uniformly arranged mounting hole on annular slot, is matched in annular slot and is set with steel ring and the equal cloth set on steel ring
Equipped with taper shrapnel, the axle sleeve of each taper shrapnel is sleeved on steel ring and in corresponding mounting hole, after each taper shrapnel combination
Form conical closure body；It is provided with sliding damper platform on the outside of the steel ring of some or all of taper shrapnel, while before drilling rod
It holds and locating groove corresponding with sliding damper platform position is distributed on the same circumference of inner wall.
It is provided with annular chuck on the telescopic sleeve lateral wall, is connected between the annular chuck and drilling rod end face
Thrust spring.
It is fixed with magnet in the bullet end of each taper shrapnel.
Beneficial effects of the present invention：1. the present invention has the function of commonly drilling and reducing drilling function, when reducing switches only
Offer negative-pressure ward power is needed to can be realized, reducing is simple to operate.Structure simplifies, highly practical, non-maintaining.
2. each taper shrapnel for combining taper seal in the present invention can be free state or keep inhaling by magnet
Attached composition assembled state.When providing suction power to drilling rod inner cavity, negative pressure is formed in drilling rod, forces telescopic sleeve into drilling rod
It shrinks, causes brill piece supporter to carry brill piece in drilling process and be gradually opened, at this time telescopic sleeve and drilling rod relative constriction, directly
Restriction relation is constituted in the locating groove that the sliding damper platform being arranged to Conical Projectile on piece enters drilling rod inner wall, completes expanding action.Contracting
Diameter process only needs stopping suction power that can realize that brill piece supporter carrying brill piece is retracted to and drilling rod pastes under the action of the spring
Conjunction state.
3. the present invention, which also has, impacts expanding function, normal drill mode is used for weak seam, is being encountered compared with hard coal
Percussion drilling pattern may be used in layer.Seam hardness is high during percussion drilling, and drilling difficulty is big, but the drilling tool of the present invention is rushing
Opposite sliding between telescopic sleeve and drilling rod can be caused during hitting（Slight stretching motion）, carried so as to cause piece supporter is bored
It bores piece high frequency slightly to overturn, that is, realizes the function of slight reducing, be conducive to carry out impact drill to the drill hole inner wall compared with hard coal seam
Into conducive to forming drilling cuttings and conducive to drilling cuttings is excluded, reducing drilling rod resistance.
4. extraction pattern can also be become high pressure water flushing blow mode by the present invention.
Description of the drawings
Fig. 1 is the drilling tool folded state schematic diagram of the present invention.
Fig. 2 is the drilling tool unfolded state schematic diagram of the present invention.
Fig. 3 is sealer closed state schematic diagram in Fig. 1.
Fig. 4 is the unfolded state schematic diagram of Fig. 3.
Fig. 5 is the disassembled form schematic diagram of Fig. 4.
Fig. 6 is the portions A enlarged structure schematic diagram in Fig. 2.
Fig. 7 is the rollover states schematic diagram of Fig. 6.
Fig. 8 is the part section structural representation of telescopic sleeve.
Figure label 1 is drilling rod, and 2 be drill bit, and 3 be telescopic sleeve, and 4 be dynamic bearing, and 5 is determine bearing, and 6 be to bore piece support
Body, 7 be auxiliary support bar, and 8 be middle bearing, and 9 be annular chuck, and 10 be thrust spring, and 11 be axis pin, and 12 is bore piece, and 13 be peace
Hole is filled, 14 be locating groove, and 15 be taper shrapnel, and 16 be steel ring, and 17 be sliding damper platform, and 18 be axle sleeve, and 19 be annular slot, and 20 are
Magnet.
Specific implementation mode：
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment 1：The folded state of suction drive-type diameter changing drilling tool as shown in Figure 1 and suction as shown in Figure 2 driving
The unfolded state of formula diameter changing drilling tool is connected with telescopic sleeve 3 in the rear end of drilling rod 1, and 3 movable set of telescopic sleeve is in drilling rod 1
Leading inside, to telescopic sleeve 3 carry drill bit 2 can in drilling rod 1 stretching motion.In the periphery lateral wall of telescopic sleeve 3
On be uniformly arranged dynamic bearing 4, be uniformly arranged on the periphery lateral wall of 1 front end of drilling rod and corresponding with dynamic bearing 4 determined bearing
5.Dynamic bearing 4 is identical with the quantity for determining bearing 5 and position corresponds to.It is hinged with by axis pin on dynamic bearing 4 and bores piece supporter 6,
Brill piece is distributed in each leading flank for boring piece supporter 6.Auxiliary support bar 7 is hinged with by axis pin on determining bearing 5, each auxiliary branch
The end of strut 7 is hinged on the middle bearing 8 of corresponding 6 rear side of brill piece supporter respectively by axis pin.
Meanwhile as shown in figure 8, the madial wall in telescopic sleeve 3 is provided with annular slot 19.As shown in Figure 6 and Figure 7, exist
It has been uniformly arranged mounting hole 13 on annular slot 19, has been matched in annular slot 19 and is set with steel ring 16 and is evenly distributed on steel ring 16
It is set with taper shrapnel 15, the axle sleeve 18 of each taper shrapnel 15 is sleeved on steel ring 16 and in corresponding mounting hole 13.Such as figure
3, shown in Fig. 4 and Fig. 5, each taper shrapnel 15 forms conical closure body after combining.As shown in Figure 6 and Figure 7, some or all of
16 outside of steel ring of taper shrapnel 15 is provided with sliding damper platform 17, while being distributed on the same circumference positioned at 1 front inner wall of drilling rod
There is locating groove corresponding with 17 position of sliding damper platform 14.
Under normal conditions, each 15 free state of taper shrapnel of taper seal is combined.When to the offer suction of 1 inner cavity of drilling rod
When power, each taper shrapnel 15, to contract, conical closure body is combined to be formed under airflow function.Combine conical closure body
Continue swabbing action after formation again, negative pressure is formed in drilling rod 1, forces telescopic sleeve 3 to 1 contract of drilling rod, to creep into
Cause to bore piece supporter 6 and carry to bore piece and be gradually opened in journey to reach expanding effect.Telescopic sleeve 3 and 1 relative constriction of drilling rod at this time,
Up to constituting restriction relation in the locating groove 14 that the sliding damper platform 17 being arranged on taper shrapnel 15 enters 1 inner wall of drilling rod, complete to expand
Diameter acts.Undergauge process only needs stopping suction power that can realize that boring piece supporter 6 carries brill piece contraction under the action of the spring
To with 1 fit-state of drilling rod.As it can be seen that reducing only needs offer negative-pressure ward power can be realized when switching, reducing is easy to operate
It is convenient.
Embodiment 2：On the basis of embodiment 1, referring to Fig. 1 and Fig. 2, and fixed in the bullet end of each taper shrapnel 15
There is magnet 20.At this point, be also provided with annular chuck 9 on 3 lateral wall of telescopic sleeve, the annular chuck 9 and 1 end face of drilling rod it
Between be connected with thrust spring 10.Under the effect of magnet 20, the conical closure body of combination is in closed state always.Partly or entirely
Or block machine is in and exposed state is unfolded, but since each taper shrapnel 15 itself has elasticity, so each sliding damper platform 17 has no effect on
Telescopic sleeve 3 is retracted movement into drilling rod 1.Telescopic sleeve 3 was retracted to 1 inside of drilling rod under the suction function that suction force provides
Cheng Zhong, 1 inner wall of drilling rod, which squeezes after sliding damper platform 17 leads to the suitably deformation of each taper shrapnel 15, to be passed through, until the positioning of 1 inner wall of drilling rod
Card slot 14 is sleeved on each sliding damper platform 17.The leading flank of sliding damper platform 17 shown in Fig. 6 and Fig. 7 be facade, trailing flank be inclined-plane or
Cambered surface so allowing drilling rod 1 from 17 rear side of sliding damper platform across sliding damper platform 17, but after the entrance locating groove 14 of sliding damper platform 17, is stretched
Casing 3 will not be retracted automatically, unless closing pumping equipment.
Claims (3)
1. a kind of suction drive-type diameter changing drilling tool, including drilling rod and drill bit and reducing drill body and running part, it is characterized in that：
It is connected with telescopic sleeve in the rear end of drilling rod, the telescopic sleeve movable set is on the inside of drilling rod front end；On the periphery of telescopic sleeve
It has been uniformly arranged dynamic bearing on lateral wall, has been uniformly arranged on the periphery lateral wall of drilling rod front end and corresponding with dynamic bearing has determined branch
Seat is hinged with by axis pin on the dynamic bearing and bores piece supporter, and brill piece is distributed in each leading flank for boring piece supporter, in institute
It states and determines to be hinged with auxiliary support bar by axis pin on bearing, the end of each auxiliary support bar is hinged on by axis pin corresponding respectively
It bores on rear side of piece supporter；The madial wall of the telescopic sleeve is provided with annular slot, peace has been uniformly arranged on annular slot
Hole is filled, is matched in annular slot and is set with steel ring and is uniformly set with taper shrapnel, the axle sleeve of each taper shrapnel on steel ring
It is sleeved on steel ring and in corresponding mounting hole, conical closure body is formed after each taper shrapnel combination；Some or all of
It is provided with sliding damper platform on the outside of the steel ring of taper shrapnel, while being distributed on the same circumference positioned at drilling rod front end inner wall and sliding damper
The corresponding locating groove in platform position.
2. suction drive-type diameter changing drilling tool according to claim 1, it is characterized in that：It is set on the telescopic sleeve lateral wall
It is equipped with annular chuck, thrust spring is connected between the annular chuck and drilling rod end face.
3. suction drive-type diameter changing drilling tool according to claim 1, it is characterized in that：In the bullet of each taper shrapnel
End is fixed with magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325733.0A CN108316967A (en) | 2018-04-12 | 2018-04-12 | Aspirate drive-type diameter changing drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810325733.0A CN108316967A (en) | 2018-04-12 | 2018-04-12 | Aspirate drive-type diameter changing drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108316967A true CN108316967A (en) | 2018-07-24 |
Family
ID=62897667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810325733.0A Withdrawn CN108316967A (en) | 2018-04-12 | 2018-04-12 | Aspirate drive-type diameter changing drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108316967A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677448A (en) * | 2020-06-18 | 2020-09-18 | 中煤科工集团重庆研究院有限公司 | Variable-diameter casing hole-protecting drilling process for unstable stratum |
| CN115094878A (en) * | 2021-09-01 | 2022-09-23 | 中国航天建设集团有限公司 | Stirring blade assembly |
-
2018
- 2018-04-12 CN CN201810325733.0A patent/CN108316967A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677448A (en) * | 2020-06-18 | 2020-09-18 | 中煤科工集团重庆研究院有限公司 | Variable-diameter casing hole-protecting drilling process for unstable stratum |
| CN111677448B (en) * | 2020-06-18 | 2022-01-28 | 中煤科工集团重庆研究院有限公司 | Variable-diameter casing hole-protecting drilling process for unstable stratum |
| CN115094878A (en) * | 2021-09-01 | 2022-09-23 | 中国航天建设集团有限公司 | Stirring blade assembly |
| CN115094878B (en) * | 2021-09-01 | 2023-11-24 | 中国航天建设集团有限公司 | Stirring vane assembly |
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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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180724 |
|
| WW01 | Invention patent application withdrawn after publication |