EP2556205A2 - Zweiteiliges bohrwerkzeug zum schlag- oder drehschlagbohren von löchern in boden- oder gesteinsmaterial - Google Patents
Zweiteiliges bohrwerkzeug zum schlag- oder drehschlagbohren von löchern in boden- oder gesteinsmaterialInfo
- Publication number
- EP2556205A2 EP2556205A2 EP11718232A EP11718232A EP2556205A2 EP 2556205 A2 EP2556205 A2 EP 2556205A2 EP 11718232 A EP11718232 A EP 11718232A EP 11718232 A EP11718232 A EP 11718232A EP 2556205 A2 EP2556205 A2 EP 2556205A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- adapter
- drilling tool
- drill head
- thread
- 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.)
- Granted
Links
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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
-
- 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
- E21B10/36—Percussion 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
- 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 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
Definitions
- the present invention relates to a two-part drilling tool for impact or rotary impact drilling of holes in soil or rock material with a drill head and a in an interior of the drill head via cooperating, complementary threads fixed adapter part for coupling to a drill pipe or a drill pipe an end face of the drill head facing away from the bore hole rests on a complementary stop or bearing surface of the adapter part.
- Drilling tools for impact or rotary impact drilling holes in soil or rock material are known in a variety of designs and for a variety of purposes, in more recent times often drill bits are used, of which a part, the so-called ring bit remains after completion of a borehole in this or so-called lost drill bits are used, which remain after completion of a wellbore entirely in the wellbore.
- drill bits for reasons of economy, a relatively soft material is usually used for either the entire or at least the ring bit, so that after completion of a well often problems in loosening and retracting the drill string or an adapter connected to the drill string, due to material deformations in the Area of the connection of the drill head or the drill bit and the adapter or the mountain-side end of the drill string occur.
- the invention now aims to provide a threaded connection between a lost drill bit or a drill head and a drill string or an adapter, which has both a sufficient service life for the formation of a well and be solved safely after completion of the drilling process can safely and reliably recover recyclable elements, such as the boring bar and / or an adapter with a boring bar fixed thereto.
- the two-part drilling tool according to the invention is characterized in that the end face of the drill head remote from the bore hole interior and the stop or bearing surface of the adapter part cooperating therewith have complementary wedge surfaces with front teeth and a pitch angle of the wedge surfaces is smaller than a pitch angle of an internal thread of the drill head or a cooperating external thread of the adapter part or the drill rod is.
- End face of the drill head and the cooperating stop or bearing surface of the adapter part have complementarily formed wedge surfaces with front teeth is an anti-rotation of the complementary inner and outer threads provided which ensures that excessive Drehmomentbean- spruchungen on the thread are held back.
- a pitch angle of the wedge surfaces is smaller than a pitch angle of an internal thread of the drill head or a cooperating external thread of the adapter part or the drill rod, a relief of the thread is ensured in the axial direction, since the impact stress is applied primarily to the wedge surfaces and the surfaces of the co-operating threads which are particularly at risk for excessive wear, namely the surface of the thread facing the inside of the mountain on the adapter or on the boring bar and the surface of the drill bit or drill head facing the outside of the mountain, are essentially kept free of impact stress in the axial direction become.
- the adapter or the boring bar can be reliably and reliably released from the drill bit, so that an excessive amount of material and in particular the loss of adapters or boring bars can be avoided.
- the two-part drilling tool is designed so that the pitch angle of the wedge surfaces is at least 10% and at most 50%, in particular about 25% smaller than the pitch angle of the inner and outer threads.
- the invention is preferably developed so that each extending in the axial direction of the two-part drill thread roots of the complementary thread of the drill head and the adapter or the drill rod has a dimension in the axial Direction of the two-piece drilling tool, which exceeds that of the threaded heads.
- each of the thread base has a greater longitudinal extent in the axial direction of the two-part Bohrtechnik- tool than the engaging respectively in the thread root threaded head, the respective threaded head is held completely free of axial stress at each stress of the two-piece drill and it can thus be prevented the complementary threads and in particular the internal thread of the drill head, which is usually made of a softer material, are knocked out or rounded off during the drilling process by excessive load and can no longer be released after completion of the drilling process.
- the thread root exceeds the dimension of the threaded head in the axial direction of the two-piece drilling tool by at least one third of the height of the front teeth, not only an exemption of the complementary thread of any axial load sure-. but additionally ensured that the clearance between the threaded head and the thread root is sufficiently small so as not to be subject to undesired bending moments during the drilling operation and additionally soiled by registered rock residues that loosening is prevented after completion of the drilling operation.
- the invention is preferably designed such that the end face of the adapter or the drill rod and the stop or support surface of the drill head has at least one, in particular at least three wedge surfaces with front teeth.
- each other front teeth By simultaneously providing in the case of engagement or during the drilling abutting each other front teeth on the one hand manages a safe transmission of the rotational movement of the drill string on the drill head and on the other hand a backup against too wide screwing the adapter or the drill string is made available in the drill head.
- the slope of the wedge surfaces is chosen so that the resulting longitudinal extension of the spur teeth in the axial direction is so large that even with the highest rotating loads or highest bending moments a sufficiently large bearing surface formed on the drill head and on the adapter or the drill rod front teeth is provided to ensure a safe and reliable transmission of the required torques and at the same time to prevent excessive wear of the front teeth.
- the wedge surfaces of the adapter or the drill rod are hardened ensures that the particularly stressed, the impact energy transmitted, wedge surfaces are secured against knocking or wear zen.
- this element is recycled or these elements after interference with a drilling process in further drilling operations ensured.
- the wedge surfaces and the front teeth of the adapter or the drill rod are hardened, all highly stressed elements of the adapter or boring bar are secured against premature wear.
- the front teeth are hardened, not only the transmission of very high torques is ensured but especially a knocking off the extremely loaded areas of the front teeth avoided.
- the construction according to the invention is preferably developed such that in the adapter or the drill rod and in the stop or bearing surface of the drill head in the region of the front teeth in each case approximately semicircular recesses are formed.
- the two-part boring tool according to the invention is preferably developed such that the internal thread of the boring head and the cooperating complementary external thread of the adapter or of the boring bar are formed as a single thread.
- catchy threads it is also possible in the case of extreme contamination and for example the entry of tough or solidifying drilling mud to safely solve the thread after completion of the drilling process and thus the intended for further use elements, namely the drill pipe and optionally an adapter to hard - safe and reliable removal of the drill string from the lost drill bit.
- the two-part drilling tool according to the invention is designed such that the respective thread of the drill head and of the adapter or boring bar is at least 75% and at most 99% of the circumference of the adapter or boring bar and boring head. stretches on the one hand ensures a secure connection of the drill head with the adapter or the drill rod and on the other hand ensures that the connection can be reliably solved even after extreme loads and / or contamination.
- the complementary threads are designed as flat threads or trapezoidal threads with a flank angle of less than 25 °.
- flat thread or trapezoidal thread to accommodate high axial stresses capable and on the other hand manages with such thread forms the necessary clearance or the necessary space between a thread root and a corresponding meshing threaded head to provide the intended preferred features of To achieve invention.
- FIG. 1 is an external view of a two-piece drilling tool according to the invention in position during impact or rotary impact drilling of holes in soil or rock material
- FIG. 2 shows a longitudinal section along the line A-A of FIG. 1 of the two-part drilling tool according to FIG. 1, FIG.
- FIG. 3 is an enlarged view of the detail B of FIG. 2, showing the alternating position of the internal thread of the drill head and the external thread of the adapter or the drill rod in the state during drilling,
- FIG. 5 shows a longitudinal section through the two-part drilling tool according to the invention, in the operating state during a retraction of the drill string and a counterclockwise rotation thereof, to carry out the rotary movement of a drill head during the rotary impact drilling,
- Fig. 6 is an external view of the two-part drilling tool in the position shown in FIG. 5, and Fig. 7 shows a section through the adapter or the drill pipe in which the pitch angle of the wedge surfaces and the thread are shown.
- FIG. 1 shows a drill head 1, in particular a so-called lost drill bit 1, which is formed on its end face 3 facing away from the release tools 2 with wedge surfaces 4 and front teeth 5.
- the wedge surfaces 4 are hiebei formed so that they are formed with complementary wedge surfaces 6 of an adapter or a drill string 7 while drilling holes in soil and / or rock material adjacent to each other and via which wedge surfaces 4 and 6, the impact energy over the drill pipe or the adapter 7 is applied to the drill head 1.
- the adapter 7 has hiebei in addition to the wedge surfaces 6 front teeth 8 which abut during a drilling, in particular during the application of torque during a rotary impact drilling on the complementary front teeth 5 of the drill head 1 and receive the torque applied to the two-piece drill tool or withstand this.
- Fig. 2 which is a section along the line AA of Fig. 1, the reference numerals of Fig. 1 are maintained.
- a catchy thread 11 is formed, which is designed so that a thread base 12 in the axial direction of the two-piece drilling tool has greater longitudinal extent than cooperating with this thread base 12 threaded head 13 of engaging in the thread 1 1 thread 14th
- the complementary thread 14 of the adapter or the drill rod 7 is also hiebei formed so that a thread root 20 has a greater axial length than a thread engaging in this thread 20 threaded head.
- the co-operating threads 11 and 14 essentially serve to center the drill pipe or the adapter 7 in the drill head 1 and, in the case of loading of the drill head 1, in particular during impact or rotary impact drilling, do not absorb any axial load and are thus free of any in axial Directional loads.
- the design is made in such a way that, during drilling, a threaded head 13 of the thread 14 formed on the adapter 7 or the drilling tool is located substantially centrally in a thread root 12 of the complementary thread.
- the cooperating wedge surfaces 4 and 6 of the drill head 1 and the adapter 7 are hiebei formed so that they can be performed without mutual interference on each other and also that formed in both elements 1 and 7 front teeth 5 and 8 are moved freely one above the other can, without touching each other or together to strike, whereby a secure, reliable screwing the adapter 7 is ensured in the drill head 1.
- Fig. 5 finally, the two-piece drilling tool during retraction of the drill pipe or adapter 7 is shown in the direction of arrow 17, as is usually carried out during a rotary impact drilling.
- the shoulder 18 of the threaded head 13, which is remote from the bore hole interior, of the thread 14 formed on the adapter 7 or of the drill rod now comes into contact with the thread 19 which is remote from the bore hole side 19 of the thread 11 formed in the drill head 1 and more precisely remote from the bore hole inside shoulder 19 of the thread bottom 12 of the thread 11 in Appendix.
- a threaded connection 11, 14 between a drill head 1 and an adapter 7 or boring bar which threaded connection 11, 14 is completely unloaded during drilling and in which connection the entire axial load on the wedge surfaces 4 and 6 is applied to the drill head 1 and the torque stress during the rotary impact drilling on the front teeth 5 and 8 is applied, so that a total wear of the thread 11 of the drill head 1 as well as the external thread 14 of the Adapters 7 is held back with certainty and after completion of the drilling process a safe and reliable release of the drilling tool or the adapter 7 can be ensured from the drill head 1 and also the adapter 7 and the drill pipe can be reused for other uses.
- a section through an adapter or a boring bar 7 is shown, in which (which) the pitch angles a1 and a2 of the wedge surface 6 and the thread 14 are shown.
- the angle a1 or a2 which are determined with respect to a fictitious, normal to a longitudinal axis 21 of the adapter axis 22 as the pitch angle of the respective thread, clearly show that when screwing the adapter 7 in the in Fig. 7, not shown Drill head 1, the thread 14 forcibly must lift off from the complementary thread 11 of the drill head 1 whereby the complementary threads 1 1, 14 are held th in the axial direction during the drilling process free of forces.
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
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL11718232T PL2556205T3 (pl) | 2010-04-07 | 2011-04-06 | Dwuczęściowe narzędzie wiertnicze do udarowego lub obrotowo-udarowego wiercenia otworów w materiale gruntowym lub skalnym |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA559/2010A AT509643B1 (de) | 2010-04-07 | 2010-04-07 | Zweiteiliges bohrwerkzeug zum schlag- oder drehschlagbohren von löchern in boden- oder gesteinsmaterial |
| PCT/AT2011/000164 WO2011123875A2 (de) | 2010-04-07 | 2011-04-06 | Zweiteiliges bohrwerkzeug zum schlag- oder drehschlagbohren von löchern in boden- oder gesteinsmaterial |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2556205A2 true EP2556205A2 (de) | 2013-02-13 |
| EP2556205B1 EP2556205B1 (de) | 2015-01-07 |
Family
ID=44581821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20110718232 Active EP2556205B1 (de) | 2010-04-07 | 2011-04-06 | Zweiteiliges bohrwerkzeug zum schlag- oder drehschlagbohren von löchern in boden- oder gesteinsmaterial |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20130098689A1 (de) |
| EP (1) | EP2556205B1 (de) |
| AT (1) | AT509643B1 (de) |
| AU (1) | AU2011238405A1 (de) |
| CA (1) | CA2795560A1 (de) |
| PL (1) | PL2556205T3 (de) |
| WO (1) | WO2011123875A2 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015174920A2 (en) * | 2014-05-16 | 2015-11-19 | Atlas Copco Secoroc Ab | Joint and joint parts for drill string components and components |
| BR112016023275B1 (pt) * | 2015-05-15 | 2022-07-19 | Márcio Dos Santos | Dispositivo para tratamento de túneis através de enfilagens tubulares auto-revestidas e auto-injetáveis |
| CA2995399A1 (en) * | 2015-07-09 | 2017-01-12 | Fero Group Pty Ltd | Two part drill bit assembly |
| CN108678678B (zh) * | 2018-06-06 | 2024-04-02 | 中国矿业大学 | 一种矿用双层干式吸尘钻头 |
| JP7677958B2 (ja) * | 2019-10-11 | 2025-05-15 | サンドヴィック マイニング アンド コンストラクション ツールズ アクティエボラーグ | 肩部が保護された穿孔アセンブリ |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2052011A (en) | 1934-08-06 | 1936-08-25 | Timken Roller Bearing Co | Separable drill bit |
| US2673715A (en) * | 1950-06-02 | 1954-03-30 | Timken Roller Bearing Co | Rock drill bit |
| US3114566A (en) * | 1961-04-21 | 1963-12-17 | Kobe Inc | Shrink fit tubing joint |
| DE2543578C2 (de) | 1975-09-30 | 1986-03-06 | Friedrich Duss Maschinenfabrik GmbH & Co, 7265 Neubulach | Gesteinsbohrer |
| AU503750B2 (en) * | 1976-07-13 | 1979-09-20 | William Lister | Rock drilling bit |
| DE3330025A1 (de) * | 1982-08-30 | 1984-03-01 | Ingersoll-Rand Co., 07675 Woodcliff Lake, N.J. | Zweistueckiger bohrer |
| SE458943B (sv) * | 1984-10-10 | 1989-05-22 | Jan Persson | Koppling mellan en borrkrona och borraxel |
| DE19541163A1 (de) | 1995-11-04 | 1997-05-07 | Hawera Probst Kg Hartmetall | Bohrwerkzeug, insbesondere zur Bearbeitung von Gestein |
| SE520893C2 (sv) * | 2002-02-21 | 2003-09-09 | Sandvik Ab | Element för slående bergborrning, innefattande åtminstone en gänga |
| US7591059B2 (en) * | 2005-09-13 | 2009-09-22 | Weatherford/Lamb, Inc. | Expansion activated anti-rotation device |
| US7419018B2 (en) * | 2006-11-01 | 2008-09-02 | Hall David R | Cam assembly in a downhole component |
| AT505072B1 (de) * | 2007-04-13 | 2009-02-15 | Alwag Tunnelausbau Gmbh | Verfahren und vorrichtung zum sichern eines mit einem aussengewinde versehenen gegenstands |
| AT505158B1 (de) * | 2007-04-19 | 2008-11-15 | Techmo Entw & Vertriebs Gmbh | Vorrichtung zum lösbaren verbinden einer bohrkrone mit einem bohrgestänge |
| SE0701371L (sv) * | 2007-06-05 | 2008-03-11 | Sandvik Intellectual Property | Bergborrutrustning samt hon- och handelar därtill |
-
2010
- 2010-04-07 AT ATA559/2010A patent/AT509643B1/de not_active IP Right Cessation
-
2011
- 2011-04-06 US US13/639,599 patent/US20130098689A1/en not_active Abandoned
- 2011-04-06 AU AU2011238405A patent/AU2011238405A1/en not_active Abandoned
- 2011-04-06 EP EP20110718232 patent/EP2556205B1/de active Active
- 2011-04-06 CA CA 2795560 patent/CA2795560A1/en not_active Abandoned
- 2011-04-06 PL PL11718232T patent/PL2556205T3/pl unknown
- 2011-04-06 WO PCT/AT2011/000164 patent/WO2011123875A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011123875A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2795560A1 (en) | 2011-10-13 |
| PL2556205T3 (pl) | 2015-07-31 |
| WO2011123875A3 (de) | 2012-03-08 |
| AU2011238405A2 (en) | 2012-11-29 |
| AU2011238405A1 (en) | 2012-11-01 |
| EP2556205B1 (de) | 2015-01-07 |
| WO2011123875A2 (de) | 2011-10-13 |
| AT509643A1 (de) | 2011-10-15 |
| AT509643B1 (de) | 2013-08-15 |
| US20130098689A1 (en) | 2013-04-25 |
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