CN109681123A - A kind of diameter adjustable drill bit and segmentation expanding method - Google Patents
A kind of diameter adjustable drill bit and segmentation expanding method Download PDFInfo
- Publication number
- CN109681123A CN109681123A CN201811438384.XA CN201811438384A CN109681123A CN 109681123 A CN109681123 A CN 109681123A CN 201811438384 A CN201811438384 A CN 201811438384A CN 109681123 A CN109681123 A CN 109681123A
- Authority
- CN
- China
- Prior art keywords
- blade
- drilling
- rod
- drill bit
- outer tube
- 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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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B10/325—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 the cutter being shifted by a spring mechanism
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Abstract
The present invention provides a kind of diameter adjustable drill bit and segmentation expanding methods, it is related to mining bit technique field, it solves and changes the technical issues of boring aperture needs replacing drill bit, drill bit structure includes drilling mechanism, aperture adjustment mechanism and drill rod mechanism, drilling mechanism includes outer tube, drilling blade, reaming blade and spring, blade setting is crept into outer tube end, reaming blade and outer tube it is side walls hinged；Aperture adjustment mechanism includes interior auger spindle and unilateral bearing, and unilateral bearing is fixed on outer tube inner wall, and spacer pin is provided on the inside of unilateral bearing, is slided in the vertical guide slot that spacer pin opens up on interior auger spindle；Drill rod mechanism includes the body of rod, end and screw-cap, and docking groove is provided on the end at body of rod both ends, and body of rod one end is provided with screw-cap；It is drilled using above-mentioned drill bit, the brill by adjusting drilling rod, which moves direction, can be adjusted pore size, achieve the purpose that same drilling subsection reaming.The present invention has many advantages, such as drilling efficiency height, easy for construction.
Description
Technical field
The present invention relates to mining drill bit technical field, the adjustable drill bit of especially a kind of diameter and the drill bit is utilized to carry out
The method for being segmented the drilling construction of reaming.
Background technique
In deep coalmining, Controlling of Coal Outburst is the emphasis for ensureing safe working.Wherein, large diameter borehole release is made
It is very widely used for technological means important in Controlling of Coal Outburst.The aperture of pressure relief vent is got in large diameter borehole unloading technology
Greatly, release effect is more abundant, but aperture is excessive will cause coal body overcrushing, causes the failure of roadway support system, causes more
Big accident.Reaming unloading technology is that slim hole is crept near coal wall, is changed in the coal body depths that stress is concentrated big straight
Diameter drilling, wherein large diameter borehole can be effectively reduced the accumulation of tunnel top and its surrounding coal and rock elastic energy, minor diameter
Drilling then maintains the integrality of tunnel side wall, and then forms roadway surrounding rock power strong structure, realizes high stress concentrations region
Safe and effective release solution danger.Therefore it needs in drilling according to the stress concentration in coal wall, section construction different-diameter
Drilling is to carry out effective release.
Reaming unloading technology needs to use reaming bit, such drill bit is mainly carried out using hydraulic pressure or mechanical means at present
The expansion of drill tip.Hydraulic type reaming bit is more demanding to hydraulic pressure value, generally requires additional high-pressure water pump, such as China is specially
A kind of Multifunctional high-pressure rotary ejecting step-reaming bit disclosed in benefit 201220052070.8.And the drill bit of mechanical reaming bit
Reaming part connecting elements is more, and structure is complicated, and durability is lower, such as one kind disclosed in Chinese patent 201520668720.5
Formula boring drill can be actuated.Existing drilling device can only generally realize the needs of a counter bore diameter, bore diameter
Drill bit is needed replacing when changing three times, working efficiency is substantially reduced, increases labour cost.Therefore, efficient for multiple aperture
The demand of reaming needs to be improved further reaming bit and segmentation expanding method.
Summary of the invention
The technical issues of to solve same brill broken charges reaming, the present invention provides a kind of diameter adjustable drill bit, tools
Body technique scheme is as follows.
A kind of diameter adjustable drill bit, including drilling mechanism, aperture adjustment mechanism and drill rod mechanism, which is characterized in that institute
Stating drilling mechanism includes that outer tube, drilling blade, reaming blade and spring, the drilling blade are arranged in outer tube end, institute
State the side walls hinged of reaming blade and outer tube；The aperture adjustment mechanism includes interior auger spindle and unilateral bearing, the interior auger spindle
It is arranged inside outer tube, the unilateral bearing is fixed on outer tube inner wall, and bearing limit is provided on the inside of unilateral bearing
It sells, is slided in the vertical guide slot that the bearing spacer pin opens up on interior auger spindle.
Preferably, drill rod mechanism includes the body of rod, end and screw-cap, and the both ends of the body of rod are arranged in the end, described
The side of the body of rod is provided with screw-cap.
Preferably, connection spacer pin is provided on outer tube inner wall, what the connection spacer pin opened up on interior auger spindle
Sliding in circumference guide-track groove.
It may further be preferable that the circumference guide-track groove on interior auger spindle is stepped；The circumference guide-track groove setting is bored inside
The rear portion of the front of axis, the interior auger spindle is additionally provided with blade limiting slot；The connecting pin of the reaming blade is in blade limiting slot
Interior sliding.
It may further be preferable that being provided with water injection hole in the middle part of the body of rod and interior auger spindle, water outlet is provided on the drilling blade
Mouthful, the water injection hole is connected with water outlet.
It is even furthermore preferable that being provided with spring between interior auger spindle and drilling blade；Expansion is provided in the outer tube
Hole blade installation slot；The drilling blade is one-directional rotation blade.
It is still further preferred that being provided with docking groove on the end at body of rod both ends, one end of the body of rod is provided with screw-cap.
The beneficial effect comprise that
(1) drill bit structure uses interior auger spindle and the mutually matched connection type of outer tube, is connected using limiting slot with bearing
Method, have it is easy for installation easy to operate, structure cooperation stablizes durable advantage；Water injection hole, water outlet are set in drill bit
Water outlet effectively can prevent drill bit from overheating.
(2) when carrying out the drilling construction of segmentation reaming using diameter adjustable drill bit, more bit change is not needed, by adjusting
Drilling rod rotation, to change bore diameter, improves the efficiency of drilling construction, alleviates the labor intensity of drilling construction.
(3) carrying out drilling construction using diameter adjustable drill bit can satisfy the construction requirement of different pore size, reversion adjustment
The extending range of reaming bit, blade limiting slot limit the position of reaming bit, change in the case where not needing more bit change
The pore size of drilling.
Detailed description of the invention
Fig. 1 is the cut-away section structural schematic diagram of diameter adjustable drill bit structure；
Fig. 2 is the structural schematic diagram of drill rod mechanism；
Fig. 3 is interior auger spindle side structure expanded view；
Fig. 4 is reaming section drilling construction structural scheme of mechanism；
In figure: 1- drilling mechanism；2- aperture adjustment mechanism；3- drill rod mechanism；11- outer tube；12- creeps into blade；13- expands
Hole blade；14- spring；Auger spindle in 21-；22- unilateral bearing；23- vertical guide slot；24- circumference guide-track groove；The limit of 25- blade
Slot；The 31- body of rod；The end 32-；33- screw-cap.
Specific embodiment
In conjunction with shown in Fig. 1 to Fig. 4, a kind of diameter adjustable drill bit specific embodiment provided by the invention is as follows.
A kind of diameter adjustable drill bit, as shown in Figure 1, specifically including drilling mechanism 1, aperture adjustment mechanism 2 and drilling rod machine
Structure 3, drilling mechanism 1 and aperture adjustment structure 2 cooperate, and drill rod mechanism 3 connects drilling machine and drilling mechanism 1, can using diameter
Mode drill bit drills, and the boring aperture size of drill bit can be adjusted in the dynamic direction of the brill by adjusting drilling rod, to reach same
The purpose of drilling subsection reaming.
Drilling mechanism 1 includes outer tube 11, drilling blade 12, reaming blade 13 and spring 14, and the drilling setting of blade 12 exists
The front end of outer tube 11, reaming blade 13 and outer tube 11 it is side walls hinged, reaming blade 13 be arranged at 11 rear portion of outer tube.
It can be arranged symmetrically two reaming blades 13 as needed, the length of reaming blade 13 is the maximum increase radius that drills.Outside
It is provided with connection spacer pin on 11 inner wall of drilling pipe, is slided in the circumference guide-track groove 24 that connection spacer pin opens up on interior auger spindle 21,
Circumference guide-track groove 24 is stepped, as shown in Figure 3.It is provided with spring 14 between interior auger spindle 21 and drilling blade 12, creeps into knife
Piece 12 is one-directional rotation blade.Reaming blade installation slot is provided in outer tube 11, non-reaming state reaming blade 13 is hidden
In reaming blade installation slot, the width of reaming blade installation slot can be equal to the installation width of reaming blade 13.
Aperture adjustment mechanism 2 includes interior auger spindle 21 and unilateral bearing 22, and interior auger spindle 21 is arranged inside outer tube 11, unidirectionally
Bearing 22 is fixed on 11 inner wall of outer tube, and the inside of unilateral bearing 22 is provided with bearing spacer pin, and bearing spacer pin bores inside
Sliding in the vertical guide slot 23 opened up on axis 21.Wherein unilateral bearing 22 can only be inverted relative to outer tube 11, when drilling rod machine
Structure 3 is rotated forward and will not be produced relative rotation between unilateral bearing 22 and outer tube 11 when unilateral bearing 22 being driven to rotate.Interior auger spindle 21
On circumference guide-track groove 24 it is stepped, the front of interior auger spindle 21 is arranged in circumference guide-track groove 24, and the rear portion of interior auger spindle 21 is also set
It is equipped with blade limiting slot 25.The connecting pin of reaming blade 13 is slided in blade limiting slot 25, and blade limiting slot 25 is stepped,
The shape of blade limiting slot 25 and the shape of circumference guide-track groove 24 are the mutual corresponding shapes by accurately calculating and being process
Shape, stepped locations are corresponding consistent.25 bottom surface of blade limiting slot squeezes the connecting pin of reaming blade 13, reaming in forward direction drilling
Blade 13 is opened, and 25 top surface of blade limiting slot limits reaming blade maximum opening angle.In the body of rod 31 and interior auger spindle 21
Portion is provided with water injection hole, creeps into and is provided with water outlet on blade, and water injection hole is connected with water outlet, by going out in boring procedure
Water hole water outlet, cools down drilling mechanism 1.
As shown in Fig. 2, drill rod mechanism 3 includes the body of rod 31, end 32 and screw-cap 33.It is set on the end at 31 both ends of the body of rod
It is equipped with docking groove, docking groove ensure that junction will not fall off because of relative rotation, and one end of the body of rod 31 is provided with screw-cap
33, two bodies of rod 31 of connection are tightened together by screw-cap 33.
A kind of segmentation expanding method, as shown in figure 4, using a kind of above-mentioned diameter adjustable drill bit, Specific construction step packet
It includes:
Step A. positions bore position, determines drilling depth.
Step B. drilling blade 12 is adjacent to coal wall, compresses the spring between interior auger spindle 21 and drilling blade 12, inverts drilling rod
Mechanism 3 drives interior auger spindle to rotate, and connection spacer pin slides in circumference guide-track groove 24, and unilateral bearing 22 rotates, bearing spacer pin
Vertically guide-track groove 23 slides, and the linkage section of reaming blade 13 enters specific limiting slot.
Step C. drill rod body 31 drives interior 21 compressed spring 14 of auger spindle, and 25 bottom surface of blade limiting slot pushes reaming blade
It opens, the maximum opening angle of the top surface limitation reaming blade 13 of blade limiting slot 25, while outer tube 11 rotates forward drilling, is formed non-
Stop drilling after reaming section.
Step D. drilling blade 12 is adjacent to coal wall, since drilling blade 12 is one-directional rotation blade, so drilling blade 12
In the reversion of interior auger spindle 21, outer tube 11 and coal wall are relatively fixed, and reversion drill rod mechanism 3 drives interior auger spindle 21 to rotate, and adjust reaming
Position of 13 connecting pin of blade in blade limiting slot 25.
Step E. rotates forward drill rod mechanism 3 and outer tube 11 is driven to rotate forward drilling, due to the setting of unilateral bearing 22, bores within institute
Axis 21 drives the reaming blade 13 in outer tube 11 to rotate forward, and forms reaming section.
Step F. repeats step B~step E, forms the drilling of segmentation reaming.
Step G. stops drilling, takes out drill bit, and reaming blade 13 is retracted to reaming blade installation slot.
When carrying out the drilling construction of segmentation reaming using diameter adjustable drill bit, more bit change is not needed, by adjusting brill
Machine rotates and reverse, to change bore diameter, improves the efficiency of drilling construction, alleviates the labor intensity of drilling construction.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (7)
1. a kind of diameter adjustable drill bit, including drilling mechanism, aperture adjustment mechanism and drill rod mechanism, which is characterized in that described
Drilling mechanism includes outer tube, drilling blade, reaming blade and spring, and the drilling blade is arranged in outer tube end, described
Reaming blade and outer tube it is side walls hinged；The aperture adjustment mechanism includes interior auger spindle and unilateral bearing, and the interior auger spindle is set
It sets inside outer tube, the unilateral bearing is fixed on outer tube inner wall, bearing spacer pin is provided on the inside of unilateral bearing,
It is slided in the vertical guide slot that the bearing spacer pin opens up on interior auger spindle.
2. a kind of diameter adjustable drill bit according to claim 1, which is characterized in that the drill rod mechanism include the body of rod,
The both ends of the body of rod are arranged in end and screw-cap, the end, and the side of the body of rod is provided with screw-cap.
3. a kind of diameter adjustable drill bit according to claim 1, which is characterized in that be provided on the outer tube inner wall
Spacer pin is connected, is slided in the circumference guide-track groove that the connection spacer pin opens up on interior auger spindle.
4. a kind of diameter adjustable drill bit according to claim 2 or 3, which is characterized in that the circumference on the interior auger spindle
Guide-track groove is stepped；The front of interior auger spindle is arranged in the circumference guide-track groove, and the rear portion of the interior auger spindle is additionally provided with blade
Limiting slot；It is slided in blade limiting slot the connecting pin of the reaming blade.
5. a kind of diameter adjustable drill bit according to claim 4, which is characterized in that set in the middle part of the body of rod and interior auger spindle
It is equipped with water injection hole, is provided with water outlet on the drilling blade, the water injection hole is connected with water outlet.
6. a kind of diameter adjustable drill bit according to claim 3 or 5, which is characterized in that the interior auger spindle and drilling knife
Spring is provided between piece；Reaming blade installation slot is provided in the outer tube；The drilling blade is one-directional rotation blade.
7. a kind of diameter adjustable drill bit according to claim 6, which is characterized in that set on the end at the body of rod both ends
It is equipped with docking groove, one end of the body of rod is provided with screw-cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811438384.XA CN109681123B (en) | 2018-11-28 | 2018-11-28 | Diameter-adjustable drill bit and sectional reaming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811438384.XA CN109681123B (en) | 2018-11-28 | 2018-11-28 | Diameter-adjustable drill bit and sectional reaming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109681123A true CN109681123A (en) | 2019-04-26 |
| CN109681123B CN109681123B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811438384.XA Active CN109681123B (en) | 2018-11-28 | 2018-11-28 | Diameter-adjustable drill bit and sectional reaming method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359842A (en) * | 2019-07-17 | 2019-10-22 | 西安石油大学 | A kind of well track adjustment device of fine and close oily drilling well |
| CN111594053A (en) * | 2020-05-28 | 2020-08-28 | 温州市晨绕机械科技有限公司 | Diameter-adjustable drilling machine for geological survey |
| CN111927325A (en) * | 2020-08-20 | 2020-11-13 | 张�浩 | Drilling rod with adjustable bore diameter |
| CN112240168A (en) * | 2020-10-15 | 2021-01-19 | 西安乔木科技技术有限公司 | Guide drill rod of horizontal directional drilling machine and construction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359842A (en) * | 2019-07-17 | 2019-10-22 | 西安石油大学 | A kind of well track adjustment device of fine and close oily drilling well |
| CN111594053A (en) * | 2020-05-28 | 2020-08-28 | 温州市晨绕机械科技有限公司 | Diameter-adjustable drilling machine for geological survey |
| CN111927325A (en) * | 2020-08-20 | 2020-11-13 | 张�浩 | Drilling rod with adjustable bore diameter |
| CN111927325B (en) * | 2020-08-20 | 2022-07-01 | 浙江野牛工具有限公司 | Drilling rod with adjustable bore diameter |
| CN112240168A (en) * | 2020-10-15 | 2021-01-19 | 西安乔木科技技术有限公司 | Guide drill rod of horizontal directional drilling machine and construction method thereof |
| CN112240168B (en) * | 2020-10-15 | 2022-06-28 | 西安乔木科技技术有限公司 | Guide drill rod of horizontal directional drilling machine and construction method thereof |
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| Publication number | Publication date |
|---|---|
| CN109681123B (en) | 2023-09-29 |
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