CN106089115A - Impact type taper thread connects drill rod - Google Patents
Impact type taper thread connects drill rod Download PDFInfo
- Publication number
- CN106089115A CN106089115A CN201610738333.3A CN201610738333A CN106089115A CN 106089115 A CN106089115 A CN 106089115A CN 201610738333 A CN201610738333 A CN 201610738333A CN 106089115 A CN106089115 A CN 106089115A
- Authority
- CN
- China
- Prior art keywords
- blind hole
- hole
- tapped blind
- drill rod
- impact 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000005553 drilling Methods 0.000 abstract description 13
- 238000009527 percussion Methods 0.000 abstract description 4
- 208000031481 Pathologic Constriction Diseases 0.000 description 4
- 210000001215 vagina Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004080 punching 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
- 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
- E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
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)
- Surgical Instruments (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of impact type taper thread and connect drill rod, belong to boring by percussion drilling tool；Aim to provide a kind of diaper body and the boring by percussion drilling tool of drill steel length in service life.It includes the diaper body being threaded blind hole, the drill steel being connected by external thread section with described blind hole, and the bottom outlet of tapped blind hole (1 2) is taper hole；There is cylindric changeover portion (2 4) front end of external thread section (2 1), and the length of this changeover portion is less than or equal at the screw-thread ending of tapped blind hole (1 2) and the distance of (1 1) at the bottom of hole；When external thread section (2 1) is tightened with tapped blind hole (1 2) cooperation, the front end face (2 5) of changeover portion (2 4) contacts with (1 1) at the bottom of the hole of tapped blind hole (1 2).The diaper body of drilling tool of the present invention and drill steel not easy fracture, has the feature such as handling ease, length in service life；It it is the improved structure of a kind of drill rod.
Description
Technical field
The present invention relates to a kind of boring by percussion drilling tool, particularly relate to a kind of impact type taper thread and connect drill rod.
Background technology
At present, boring by percussion drilling tool is generally formed by connecting by the diaper body of screw thread with bore bit by drill steel.In rock drilling process
In, drill steel, diaper body stressing conditions are more complicated, severe, easily cause drilling tool and lose efficacy, affect the drilling tool life-span.Make discovery from observation,
Drilling tool lost efficacy mainly two kinds of forms: 1) rupture at the female thread ending of diaper body tapped blind hole；2) drill steel external thread section is received
Rupture at tail.By analysis, cause diaper body or drill steel major cause of failure as follows:
1) owing to offering escape at female thread ending, intensity relatively thin corresponding to the diaper body wall of this escape position is relatively
Weak, and stress is usually focused on the intersection of escape and tapped blind hole, therefore diaper body fracture easily occur tapped blind hole with
The intersection of escape.
2) having focused largely at drill steel external screw thread ending due to stress, when by Moment, drill steel is easily at external screw thread
Rupture at ending.
To this end, " US6767156B1 " discloses a kind of threaded drill rod of impact type.The drill steel of this patent has two
Individual tapered guide face (external thread section front end being positioned at drill steel, another be positioned at the intersection of the shaft shoulder and external thread section), trousers
The tapped blind hole of body has two inner conical surfaces corresponding with above-mentioned two tapered guide face, and shaft shoulder right angle end face and diaper body end face
Keep contact, therefore serious cross location (two tapered guide faces and a shaft shoulder right angle end face), at diameter axially existing
Direction there is also location (two tapered guide faces).Although said structure can bear bigger moment of flexure, but bears axially punching
The ability hitting power is more weak.In actual use, even if two matching relationships between inner conical surface and the shaft shoulder process (the most fixed very well
The interference degrees of position is less), but after structure stand under load deforms, (especially near female thread end face) very likely occurs by pricker
Bar shaft shoulder right angle end face (or female thread end face of correspondence) and the conical surface of drill steel external thread section front end bear moment of flexure, thus cause
The carrying arm of force reduces suddenly, moment of flexure local stress increases.Meanwhile, when shaft shoulder right angle end face (or female thread end face) discontinuity
Time, the impulsive force (for the Main Load of combiner transmission) of its transmission can strengthen the degree of stress raisers further, lead
Lost efficacy in causing the part short time.
It addition, " CN10289110B " discloses one " drill bit bored for impact type rock ", this patent is with spiral shell in a section
Stricture of vagina substitutes the escape in tapped blind hole, although can overcome the defect that diaper body wall is relatively thin at escape, but internal thread machining
Relatively difficult.Moreover, owing to eliminating escape, female thread extends at the bottom of the hole of tapped blind hole；Therefore at interior spiral shell
Stress can be formed between at stricture of vagina ending and at the bottom of the hole of tapped blind hole concentrate, thus cause female thread easily to produce with Kong Di intersection
Crackle.Further, owing to the drill steel of this patent is not provided with the shaft shoulder, therefore diaper body end face and threaded engagement line are similar to simply supported beam knot
Structure, necessarily causes external screw thread to rupture at threaded engagement line under Moment, and this is also that current tradition external screw thread is topmost
Failure mode.
Summary of the invention
For drawbacks described above present in prior art, it is desirable to provide a kind of impact type taper thread connects rock drilling
Drilling tool, it not only can be avoided diaper body to rupture in bottom, tapped blind hole hole but also can also prevent at drill steel screw-thread ending outside
Rupture, thus be effectively improved the drilling tool life-span.
To achieve these goals, the present invention is by the following technical solutions: it includes being threaded the diaper body of blind hole, passing through
It is located at the drill steel that the external screw thread at leading portion position is connected with described tapped blind hole；The bottom outlet of tapped blind hole is taper hole, this bottom outlet
Bus and this bottom outlet axis between angle β be 1～10 °, preferably 5 °；It is blind that the front end of external thread section has diameter to be less than screw thread
The cylindric changeover portion of hole smallest cross-sectional diameter, the length of this changeover portion is less than or equal at the screw-thread ending of tapped blind hole and hole
The distance at the end, when external thread section is tightened with tapped blind hole cooperation, the front end face of changeover portion contacts with at the bottom of the hole of tapped blind hole.
Drill steel is the multidiameter structure with stage casing, is connected transition, spiral shell by the conical surface shaft shoulder between external thread section with stage casing
The inner conical surface suitable with this shaft shoulder is had at the aperture of stricture of vagina blind hole；Angle γ between the shaft shoulder and drill steel axis is 1～10 °, excellent
Elect 4 ° as.
Escape is had between at the bottom of tapped blind hole and hole.
Compared with the prior art, due to the fact that and have employed said structure therefore have plurality of advantages, concrete analysis is such as
Under:
1) front end at drill steel external thread section arranges changeover portion, and the drill steel mistake when external thread section coordinates with tapped blind hole and to tighten
The front end face of the section of crossing contacts with at the bottom of the hole of tapped blind hole, and therefore drill steel can be by the hole of the front end face of this changeover portion Yu tapped blind hole
Hitting power is transmitted in end contact, thus the threaded engagement face of tradition drilling tool can be avoided to be subject to the defect destroyed.
2) for relatively conventional drill steel, owing to have employed multidiameter structure and the drill steel stage casing that is relatively large in diameter with diameter relatively
The shaft shoulder that have employed cone structure between little external thread section connects transition, therefore enhances the intensity of drill steel.
3) when external thread section coordinates with tapped blind hole and to tighten, connect at the bottom of the front end face of drill steel changeover portion and the hole of tapped blind hole
Tactile but the conical surface shaft shoulder does not contact with inner conical surface；Therefore axially and radially all without location occurred.Only it is subject to when drill steel
During Moment, the shaft shoulder just contacts with inner conical surface, therefore, it is possible to avoid at drill steel external thread section ending because of by Moment
Fracture.
4) due to the diaper body wall thickness that have employed the tapped blind hole with tapering, increase bottom, tapped blind hole hole, therefore move back
Diaper body intensity at cutter groove does not weaken, and will not rupture.
5) inner conical surface is used to coordinate the shaft shoulder and diaper body in impact process can also be overcome easily to stick together scarce with the conical surface shaft shoulder
Fall into.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
In figure: 1-1 at the bottom of diaper body 1, hole, tapped blind hole 1-2, inner conical surface 1-3, escape 1-4, drill steel 2, external thread section 2-1,
Stage casing 2-2, shaft shoulder 2-3, changeover portion 2-4, front end face 2-5.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings:
Embodiment 1
As shown in Figure 1: the diaper body 1 of bore bit is provided with taper thread blind hole 1-2, drill steel 2 is by being located at the outer spiral shell at its leading portion position
Stricture of vagina section 2-1 is connected with this tapped blind hole；Angle β between bottom outlet bus and the described bottom outlet axis of tapped blind hole 1-2 be 1～
10 °, preferably 5 °.The front end of external thread section 2-1 has diameter to be less than the cylindric changeover portion of tapped blind hole 1-2 smallest cross-sectional diameter
2-4, the length of this changeover portion is less than or equal at the screw-thread ending of tapped blind hole 1-2 and the distance of 1-1 at the bottom of hole；Work as external thread section
2-1 and tapped blind hole 1-2 coordinates when tightening, and the front end face 2-5 of changeover portion 2-4 contacts with 1-1 at the bottom of the hole of tapped blind hole 1-2.
Embodiment 2
On the basis of above-described embodiment, the present invention can also use following structure: in order to improve the intensity of drill steel 2, drill steel 2 is adopted
By the multidiameter structure with stage casing 2-2；Concentrate in order to avoid producing stress, by cone between external thread section 2-1 and stage casing 2-2
Over glaze shoulder 2-3 connects transition；Angle γ between shaft shoulder 2-3 and drill steel 2 axis is 1～10 °, preferably 4 °.In order to improve pricker
Bending strength at bar 2 external screw thread ending, has the inner conical surface 1-3 suitable with shaft shoulder 2-3 at the aperture of tapped blind hole 1-2.When
External thread section 2-1 and tapped blind hole 1-2 coordinates when tightening, the hole of the front end face 2-5 and tapped blind hole 1-2 of only changeover portion 2-4
End 1-1 contacts and the male cone (strobilus masculinus) of shaft shoulder 2-3 does not contact with the inner conical surface 1-3 at tapped blind hole 1-2 aperture；Therefore can avoid
Cross location and form interference.
For the ease of machining internal thread, at the bottom of tapped blind hole 1-2 and hole, between 1-1, it is being provided with escape 1-4.
Claims (7)
1. impact type taper thread connects a drill rod, including being threaded the diaper body of blind hole, by being located at leading portion position
The drill steel that is connected with described tapped blind hole of external screw thread；It is characterized in that: the bottom outlet of tapped blind hole (1-2) is taper hole, should
Angle β between the bus of bottom outlet and this bottom outlet axis is 1～10 °；It is blind that the front end of external thread section (2-1) has diameter to be less than screw thread
The cylindric changeover portion (2-4) of hole (1-2) smallest cross-sectional diameter, the length of this changeover portion is less than or equal to tapped blind hole (1-2)
Screw-thread ending at hole at the bottom of the distance of (1-1), the changeover portion when external thread section (2-1) coordinates with tapped blind hole (1-2) and to tighten
(2-4) front end face (2-5) contacts with (1-1) at the bottom of the hole of tapped blind hole (1-2).
Impact type taper thread the most according to claim 1 connects drill rod, it is characterised in that: described angle β is 5 °.
Impact type taper thread the most according to claim 1 and 2 connects drill rod, it is characterised in that: drill steel (2) is band
There is the multidiameter structure in stage casing (2-2), be connected by the conical surface shaft shoulder (2-3) between external thread section (2-1) with stage casing (2-2)
Cross, at the aperture of tapped blind hole (1-2), have the inner conical surface (1-3) suitable with this shaft shoulder；The shaft shoulder (2-3) and drill steel (2) axis
Between angle γ be 1～10 °.
Impact type taper thread the most according to claim 3 connects drill rod, it is characterised in that: described angle γ is
4°。
Impact type taper thread the most according to claim 1 and 2 connects drill rod, it is characterised in that: tapped blind hole (1-
2) and at the bottom of hole, between (1-1), have escape (1-4).
Impact type taper thread the most according to claim 3 connects drill rod, it is characterised in that: tapped blind hole (1-2)
And there is escape (1-4) at the bottom of hole between (1-1).
Impact type taper thread the most according to claim 4 connects drill rod, it is characterised in that: tapped blind hole (1-2)
And there is escape (1-4) at the bottom of hole between (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610738333.3A CN106089115B (en) | 2016-08-29 | 2016-08-29 | Impact type taper thread connects drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610738333.3A CN106089115B (en) | 2016-08-29 | 2016-08-29 | Impact type taper thread connects drill rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106089115A true CN106089115A (en) | 2016-11-09 |
| CN106089115B CN106089115B (en) | 2018-08-17 |
Family
ID=57226041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610738333.3A Active CN106089115B (en) | 2016-08-29 | 2016-08-29 | Impact type taper thread connects drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106089115B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386992A (en) * | 2017-09-01 | 2017-11-24 | 贵州迈锐钻探设备制造有限公司 | Have an opencast mining of drilling tool component and strip mining transformation drilling tool |
| CN110977343A (en) * | 2019-11-29 | 2020-04-10 | 安庆中船动力配套有限公司 | Processing technology of threaded blind hole of connecting rod body |
| CN114622834A (en) * | 2022-03-04 | 2022-06-14 | 贵州捷盛钻具股份有限公司 | Anti-bending rock drilling tool, rock drill and rock drilling trolley |
| CN114633218A (en) * | 2022-03-04 | 2022-06-17 | 贵州捷盛钻具股份有限公司 | Surface treatment method and surface treatment device for drill rod and drill rod manufacturing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6767156B1 (en) * | 1999-11-26 | 2004-07-27 | Sandvik Ab | Thread joint and threaded components for percussive drilling components |
| US20060060388A1 (en) * | 2004-08-17 | 2006-03-23 | Sandvik Intellectual Property Ab | Rock drill bit and a thread joint therefor |
| CN101067365A (en) * | 2007-05-30 | 2007-11-07 | 李明锁 | Improved screw connection drill rod |
| CN202348143U (en) * | 2011-12-15 | 2012-07-25 | 山东明珠石油装备制造有限公司 | Novel drill rod joint thread |
| CN103216197A (en) * | 2013-04-28 | 2013-07-24 | 江苏曙光石油钻采设备有限公司 | Fast-rotation type oil drill rod joint thread reinforcing structure |
| CN203114190U (en) * | 2013-03-20 | 2013-08-07 | 湖南有色重型机器有限责任公司 | Rock drilling drill stem |
| CN205918371U (en) * | 2016-08-29 | 2017-02-01 | 贵州捷盛钻具股份有限公司 | Impacted style tapering threaded connection rock drilling brazing tool |
-
2016
- 2016-08-29 CN CN201610738333.3A patent/CN106089115B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6767156B1 (en) * | 1999-11-26 | 2004-07-27 | Sandvik Ab | Thread joint and threaded components for percussive drilling components |
| US20060060388A1 (en) * | 2004-08-17 | 2006-03-23 | Sandvik Intellectual Property Ab | Rock drill bit and a thread joint therefor |
| CN101067365A (en) * | 2007-05-30 | 2007-11-07 | 李明锁 | Improved screw connection drill rod |
| CN202348143U (en) * | 2011-12-15 | 2012-07-25 | 山东明珠石油装备制造有限公司 | Novel drill rod joint thread |
| CN203114190U (en) * | 2013-03-20 | 2013-08-07 | 湖南有色重型机器有限责任公司 | Rock drilling drill stem |
| CN103216197A (en) * | 2013-04-28 | 2013-07-24 | 江苏曙光石油钻采设备有限公司 | Fast-rotation type oil drill rod joint thread reinforcing structure |
| CN205918371U (en) * | 2016-08-29 | 2017-02-01 | 贵州捷盛钻具股份有限公司 | Impacted style tapering threaded connection rock drilling brazing tool |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107386992A (en) * | 2017-09-01 | 2017-11-24 | 贵州迈锐钻探设备制造有限公司 | Have an opencast mining of drilling tool component and strip mining transformation drilling tool |
| CN107386992B (en) * | 2017-09-01 | 2023-04-25 | 贵州迈锐钻探设备制造有限公司 | Surface mining drill tool assembly and surface mining drill tool |
| CN110977343A (en) * | 2019-11-29 | 2020-04-10 | 安庆中船动力配套有限公司 | Processing technology of threaded blind hole of connecting rod body |
| CN114622834A (en) * | 2022-03-04 | 2022-06-14 | 贵州捷盛钻具股份有限公司 | Anti-bending rock drilling tool, rock drill and rock drilling trolley |
| CN114633218A (en) * | 2022-03-04 | 2022-06-17 | 贵州捷盛钻具股份有限公司 | Surface treatment method and surface treatment device for drill rod and drill rod manufacturing method |
| CN114633218B (en) * | 2022-03-04 | 2023-09-19 | 贵州捷盛钻具股份有限公司 | Surface treatment method and device for drill rod and drill rod manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106089115B (en) | 2018-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106089115A (en) | Impact type taper thread connects drill rod | |
| CN106150395A (en) | Boring by percussion drilling tool | |
| US20170234075A1 (en) | Drilling tool | |
| EP2845992B1 (en) | Drill string with bend resistant coupling | |
| KR20070045257A (en) | A rock drill bit and a thread joint | |
| CN205918371U (en) | Impacted style tapering threaded connection rock drilling brazing tool | |
| CN106089116B (en) | Impact type compound thread connects drill rod | |
| CN206144484U (en) | Compound threaded connection rock drilling brazing tool of impacted style | |
| CN205918370U (en) | Impacted style rock drilling brazing tool | |
| US2334845A (en) | Center drill | |
| CN201751527U (en) | Hermetic seal drill pipe joint with good torsion resistance performance | |
| CN214196162U (en) | Wave-shaped thread bending-resistant drilling tool | |
| US4002214A (en) | Drilling tool, especially for hammer drills | |
| CN207027778U (en) | Wear-resisting solid center bit | |
| CN102865045A (en) | Rock drilling quick replacing drilling rod with taper thread | |
| CN207393236U (en) | A kind of long special bit shank from into anchor pole of pusher leg drill construction | |
| JP5152022B2 (en) | Drilling tools | |
| CN205778593U (en) | A kind of anti-galling drilling tool thread joint | |
| CN201865594U (en) | Stress reducing drill pipe connector with high torsion resistance | |
| CN113454310B (en) | Drill stem | |
| CN204326992U (en) | A kind of three top formula horizontal orientation drilling rods | |
| CN206190229U (en) | Double shoulder outer threaded pipe connector with stress slows down structure | |
| CN201397140Y (en) | Split plumb bob | |
| CN209369739U (en) | A kind of dual stage shoulder stress release screwed part | |
| CN106914760B (en) | Fixation device, lathe and the processing method of machining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |