CA2511943C - Coupling sleeve for connection of a threaded rock bolt to an impact rock drilling machine - Google Patents
Coupling sleeve for connection of a threaded rock bolt to an impact rock drilling machine Download PDFInfo
- Publication number
- CA2511943C CA2511943C CA2511943A CA2511943A CA2511943C CA 2511943 C CA2511943 C CA 2511943C CA 2511943 A CA2511943 A CA 2511943A CA 2511943 A CA2511943 A CA 2511943A CA 2511943 C CA2511943 C CA 2511943C
- Authority
- CA
- Canada
- Prior art keywords
- coupling sleeve
- drilling machine
- rock
- rock drilling
- rock bolt
- 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.)
- Expired - Fee Related
Links
- 239000011435 rock Substances 0.000 title claims abstract description 66
- 230000008878 coupling Effects 0.000 title claims abstract description 38
- 238000010168 coupling process Methods 0.000 title claims abstract description 38
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 38
- 238000005553 drilling Methods 0.000 title claims abstract description 37
- 238000009527 percussion Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/03—Couplings; joints between drilling rod or pipe and drill motor or surface drive, e.g. between drilling rod and hammer
-
- 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
-
- 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
- E21B17/043—Threaded with locking means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/50—Bridged by diverse connector
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Dowels (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
Coupling sleeve for connecting a threaded rock bolt (1) to an impact rock drilling machine (2) comprising a first part (3) provided with an internal thread (4) for connection of the rock bolt (1) and a second part (5) provided with an internal thread (6) for connection of the rock drilling machine (2), whereby the second part (5) comprises a transversely to a longitudinal axis (9) on the coupling sleeve arranged locking device (7) which cooperates with a region (8) on the rock drilling machine (2) for preventing that the coupling sleeve and the rock drilling machine (2) are separated.
Description
Coupling sleeve for connection of a threaded rock bolt to an impact rock drilling machine The present invention relates to a coupling sleeve for connection of a threaded rock bolt to an impact rock drilling machine more specifically the invention is about a specific design of the coupling sleeve which secures that a certain of the two threaded connections of the coupling sleeve is loosened first when the rock drilling machine is disconnected from the rock bolt.
In a previously known solution for securing that a certain thread connection is loosened first, see SE 433 097, one uses threads with different pitches, different threads or cones in order to achieve a thread connection which is substantially more difficult to loosen than the other. These solutions have the drawback that one must use nonstandard parts. All the time one also must check which end is which in order to achieve correct connection.
In an attempt to solve the above mentioned problem, see WO 02/057591, a sleeve is clamped on the thread which is to be difficult to loosen. It has turned out that this solution has the drawback that it cannot take the shock wave loads to which the thread connection is exerted during drilling.
Some embodiments of the present invention aim at doing away with the above mentioned drawbacks by providing the coupling sleeve with a locking device which cooperates with a region in the shank adapter of the rock drilling machine in order to prevent that the coupling sleeve and the rock drilling machine are separated when the rock drilling machine and the rock bolt are separated.
According to one aspect of the present invention, there is provided a coupling sleeve for connecting a threaded rock bolt to an impact rock drilling machine, said coupling sleeve comprising a first part provided with an internal thread for connection of the rock bolt, and a second part provided with an internal thread for connection of the rock drilling machine, wherein the second part comprises a locking device arranged substantially transversely to a longitudinal axis of the coupling sleeve, said locking device cooperating with a region on the rock drilling machine for preventing separation of the coupling sleeve and the rock drilling machine, wherein percussion energy is transmitted from the rock drilling machine to the rock bolt during a percussion operation when the locking device is unloaded, and said locking device is loaded to retain the rock drilling machine connected to the coupling sleeve only when said rock bolt is disconnected from said coupling sleeve by rotation of said rock drilling machine in a direction for disconnecting said first part of said coupling sleeve from said rock bolt for reinforcing a rock with said rock bolt.
An embodiment of the invention is described below with reference to the accompanying drawing in which fig 1 shows a perspective view of a coupling sleeve according to the invention and a shank adapter and a rock bolt for cooperation with the coupling sleeve. Fig 2 shows a section through the device according to fig 1 with rock bolt and rock drilling machine connected to the coupling sleeve.
Fig. 3 shows the coupling sleeve with the locking device loaded and the rock bolt separated from the coupling sleeve.
The coupling sleeve shown in the drawing comprises a first part 3 provided with an internal thread 4 to which a threaded rock bolt 1 is connectable.
The threaded rock bolt is provided with a not shown drill bit for drilling of the hole in which the rock bolt is to be anchored. The coupling sleeve comprises also a second part 5 provided with an internal thread 6 to which a rock drilling machine 2 is connectable. In the drawing the shank adapter belonging to the rock drilling machine is shown. The coupling sleeve has a longitudinal axis 9. The coupling sleeve is in its second part 5 provided with two transversely to axis 9 arranged borings 10 in which a locking device 7 in form of two spring pins is arranged. The locking device 7 cooperates with a region 8 in order to prevent that the coupling sleeve and the rock drilling machine 2 are separated.
When setting a rock bolt 1 the shank adapter belonging to the rock drilling machine 2 is rotated at the same time as it is exerted to impacts.
Through this a hole is drilled with rock bolt 1 in which hole the rock bolt is to be anchored. During drilling the locking device 7 is unloaded, as illustrated in Fig. 2. After drilling the rock bolt 1 is to be separated from the coupling sleeve and left in the rock.
Hereby the rock drilling machine is rotated for loosening of the thread connection.
Through cooperation between the locking device 7 and region 8 which has a smaller diameter than the thread of the shank adapter it is prevented that the rock drilling machine 2 and the coupling sleeve are separated, as illustrated in Fig. 3. After that the drillhole is filled around the rock bolt with cement or resin for anchoring of the rock bolt in the borehole.
In a previously known solution for securing that a certain thread connection is loosened first, see SE 433 097, one uses threads with different pitches, different threads or cones in order to achieve a thread connection which is substantially more difficult to loosen than the other. These solutions have the drawback that one must use nonstandard parts. All the time one also must check which end is which in order to achieve correct connection.
In an attempt to solve the above mentioned problem, see WO 02/057591, a sleeve is clamped on the thread which is to be difficult to loosen. It has turned out that this solution has the drawback that it cannot take the shock wave loads to which the thread connection is exerted during drilling.
Some embodiments of the present invention aim at doing away with the above mentioned drawbacks by providing the coupling sleeve with a locking device which cooperates with a region in the shank adapter of the rock drilling machine in order to prevent that the coupling sleeve and the rock drilling machine are separated when the rock drilling machine and the rock bolt are separated.
According to one aspect of the present invention, there is provided a coupling sleeve for connecting a threaded rock bolt to an impact rock drilling machine, said coupling sleeve comprising a first part provided with an internal thread for connection of the rock bolt, and a second part provided with an internal thread for connection of the rock drilling machine, wherein the second part comprises a locking device arranged substantially transversely to a longitudinal axis of the coupling sleeve, said locking device cooperating with a region on the rock drilling machine for preventing separation of the coupling sleeve and the rock drilling machine, wherein percussion energy is transmitted from the rock drilling machine to the rock bolt during a percussion operation when the locking device is unloaded, and said locking device is loaded to retain the rock drilling machine connected to the coupling sleeve only when said rock bolt is disconnected from said coupling sleeve by rotation of said rock drilling machine in a direction for disconnecting said first part of said coupling sleeve from said rock bolt for reinforcing a rock with said rock bolt.
An embodiment of the invention is described below with reference to the accompanying drawing in which fig 1 shows a perspective view of a coupling sleeve according to the invention and a shank adapter and a rock bolt for cooperation with the coupling sleeve. Fig 2 shows a section through the device according to fig 1 with rock bolt and rock drilling machine connected to the coupling sleeve.
Fig. 3 shows the coupling sleeve with the locking device loaded and the rock bolt separated from the coupling sleeve.
The coupling sleeve shown in the drawing comprises a first part 3 provided with an internal thread 4 to which a threaded rock bolt 1 is connectable.
The threaded rock bolt is provided with a not shown drill bit for drilling of the hole in which the rock bolt is to be anchored. The coupling sleeve comprises also a second part 5 provided with an internal thread 6 to which a rock drilling machine 2 is connectable. In the drawing the shank adapter belonging to the rock drilling machine is shown. The coupling sleeve has a longitudinal axis 9. The coupling sleeve is in its second part 5 provided with two transversely to axis 9 arranged borings 10 in which a locking device 7 in form of two spring pins is arranged. The locking device 7 cooperates with a region 8 in order to prevent that the coupling sleeve and the rock drilling machine 2 are separated.
When setting a rock bolt 1 the shank adapter belonging to the rock drilling machine 2 is rotated at the same time as it is exerted to impacts.
Through this a hole is drilled with rock bolt 1 in which hole the rock bolt is to be anchored. During drilling the locking device 7 is unloaded, as illustrated in Fig. 2. After drilling the rock bolt 1 is to be separated from the coupling sleeve and left in the rock.
Hereby the rock drilling machine is rotated for loosening of the thread connection.
Through cooperation between the locking device 7 and region 8 which has a smaller diameter than the thread of the shank adapter it is prevented that the rock drilling machine 2 and the coupling sleeve are separated, as illustrated in Fig. 3. After that the drillhole is filled around the rock bolt with cement or resin for anchoring of the rock bolt in the borehole.
Claims (2)
1. A coupling sleeve for connecting a threaded rock bolt to an impact rock drilling machine, said coupling sleeve comprising a first part provided with an internal thread for connection of the rock bolt, and a second part provided with an internal thread for connection of the rock drilling machine, wherein the second part comprises a locking device arranged substantially transversely to a longitudinal axis of the coupling sleeve, said locking device cooperating with a region on the rock drilling machine for preventing separation of the coupling sleeve and the rock drilling machine, wherein percussion energy is transmitted from the rock drilling machine to the rock bolt during a percussion operation when the locking device is unloaded, and said locking device is loaded to retain the rock drilling machine connected to the coupling sleeve only when said rock bolt is disconnected from said coupling sleeve by rotation of said rock drilling machine in a direction for disconnecting said first part of said coupling sleeve from said rock bolt for reinforcing a rock with said rock bolt.
2. The coupling sleeve as claimed in claim 1, wherein said locking device comprises at least one locking pin for engaging said drilling machine through at least one opening in said coupling sleeve.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0300211-0 | 2003-01-30 | ||
| SE0300211A SE0300211L (en) | 2003-01-30 | 2003-01-30 | Coupling sleeve for connecting a threaded rock bolt to a striking rock drill |
| PCT/SE2004/000085 WO2004067902A1 (en) | 2003-01-30 | 2004-01-26 | Coupling sleeve for connection of a threaded rock bolt to an impact rock drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2511943A1 CA2511943A1 (en) | 2004-08-12 |
| CA2511943C true CA2511943C (en) | 2012-02-21 |
Family
ID=20290236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2511943A Expired - Fee Related CA2511943C (en) | 2003-01-30 | 2004-01-26 | Coupling sleeve for connection of a threaded rock bolt to an impact rock drilling machine |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20060078372A1 (en) |
| EP (1) | EP1588019B1 (en) |
| JP (1) | JP4568715B2 (en) |
| CN (1) | CN100335740C (en) |
| AT (1) | ATE343706T1 (en) |
| CA (1) | CA2511943C (en) |
| DE (1) | DE602004002930T2 (en) |
| DK (1) | DK1588019T3 (en) |
| ES (1) | ES2276271T3 (en) |
| PT (1) | PT1588019E (en) |
| SE (1) | SE0300211L (en) |
| WO (1) | WO2004067902A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT9590U1 (en) * | 2006-08-17 | 2007-12-15 | Atlas Copco Mai Gmbh | RUBBER TANK AND INFLATION ADAPTER FOR THESE |
| AU2006236012B2 (en) * | 2006-11-15 | 2009-06-04 | Sandvik Intellectual Property Ab | A rock bolt and an anchoring device |
| RU2444630C2 (en) | 2006-11-15 | 2012-03-10 | Сандвик Интеллекчуал Проперти Аб | Anchor bolt and anchor device |
| FR2952506A1 (en) * | 2009-11-13 | 2011-05-20 | Edith Thiriet | Dismountable de-scaling device for breadmaker, has turning drill equipped with tubes that comprise multiple elements, where tubes are connected with each other by utilizing threadings |
| FI123244B (en) * | 2010-10-26 | 2013-01-15 | Peikko Group Oy | Column Shoe |
| CN102465712B (en) * | 2010-11-15 | 2015-01-28 | 湖南汉寿中煤科技有限公司 | Drilling-cutting-linked coal layer gas drainage and outburst prevention system and method based on ultra-long drilling and high-pressure water jetting |
| CN203756064U (en) | 2010-12-01 | 2014-08-06 | 维米尔制造公司 | Adaptor used in drill column and/or connecting component of drill column |
| DE102011107348A1 (en) | 2011-06-29 | 2013-01-03 | Tracto-Technik Gmbh & Co. Kg | "Connection device" |
| JP2013106827A (en) * | 2011-11-22 | 2013-06-06 | Yoshida Dental Mfg Co Ltd | Ultrasonic scaler handpiece |
| DE102013012714A1 (en) * | 2013-08-01 | 2015-02-05 | Deilmann-Haniel Mining Systems Gmbh | Shank end for a drilling and tying tool |
| US9605492B2 (en) * | 2013-10-07 | 2017-03-28 | Halliburton Energy Services, Inc. | Quick connect for wellbore tubulars |
| JP2017203332A (en) * | 2016-05-13 | 2017-11-16 | 株式会社トライテック | Boring tool and boring method |
| DE102019121054A1 (en) | 2018-08-06 | 2020-02-06 | The Charles Machine Works, Inc. | Double-tube drill bit quick-change connection |
| CN112302696B (en) * | 2020-09-30 | 2023-02-28 | 中煤科工开采研究院有限公司 | Anchor rod assembly |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US771626A (en) * | 1903-12-16 | 1904-10-04 | George H Gilman | Drill-chuck. |
| US1701985A (en) * | 1926-03-18 | 1929-02-12 | Ponto Otto | Coupling lock |
| US1994792A (en) * | 1932-08-08 | 1935-03-19 | Ray R Sanderson | Drill bit |
| SE403926B (en) * | 1975-11-05 | 1978-09-11 | Sandvik Ab | LOCKING DEVICE AT DRILL |
| SE433097B (en) * | 1979-09-04 | 1984-05-07 | Atlas Copco Ab | Equipment for joinable drill stem |
| JPS58176191U (en) * | 1982-05-20 | 1983-11-25 | マツダ株式会社 | rock drill rock drill |
| JPH05263577A (en) * | 1992-03-17 | 1993-10-12 | Mitsubishi Heavy Ind Ltd | Roof bolt |
| JP3272324B2 (en) * | 1999-05-17 | 2002-04-08 | 合資会社日高商会 | Method and apparatus for disassembling connecting rod assembly for drilling and rotation stopper jig |
| SE516995C2 (en) * | 2001-01-19 | 2002-04-02 | Atlas Copco Rock Drills Ab | Clutch sleeve for connecting a threaded rock bolt to a striking rock drill |
-
2003
- 2003-01-30 SE SE0300211A patent/SE0300211L/en unknown
-
2004
- 2004-01-26 EP EP04705207A patent/EP1588019B1/en not_active Expired - Lifetime
- 2004-01-26 WO PCT/SE2004/000085 patent/WO2004067902A1/en active IP Right Grant
- 2004-01-26 ES ES04705207T patent/ES2276271T3/en not_active Expired - Lifetime
- 2004-01-26 CN CNB2004800019943A patent/CN100335740C/en not_active Expired - Fee Related
- 2004-01-26 AT AT04705207T patent/ATE343706T1/en active
- 2004-01-26 DK DK04705207T patent/DK1588019T3/en active
- 2004-01-26 JP JP2006502774A patent/JP4568715B2/en not_active Expired - Fee Related
- 2004-01-26 DE DE602004002930T patent/DE602004002930T2/en not_active Expired - Lifetime
- 2004-01-26 US US10/539,148 patent/US20060078372A1/en not_active Abandoned
- 2004-01-26 PT PT04705207T patent/PT1588019E/en unknown
- 2004-01-26 CA CA2511943A patent/CA2511943C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN100335740C (en) | 2007-09-05 |
| JP2006517010A (en) | 2006-07-13 |
| WO2004067902A1 (en) | 2004-08-12 |
| US20060078372A1 (en) | 2006-04-13 |
| ATE343706T1 (en) | 2006-11-15 |
| JP4568715B2 (en) | 2010-10-27 |
| PT1588019E (en) | 2007-02-28 |
| EP1588019A1 (en) | 2005-10-26 |
| DK1588019T3 (en) | 2007-02-19 |
| EP1588019B1 (en) | 2006-10-25 |
| SE0300211D0 (en) | 2003-01-30 |
| DE602004002930T2 (en) | 2007-04-05 |
| SE522626C2 (en) | 2004-02-24 |
| ES2276271T3 (en) | 2007-06-16 |
| CA2511943A1 (en) | 2004-08-12 |
| CN1723330A (en) | 2006-01-18 |
| DE602004002930D1 (en) | 2006-12-07 |
| SE0300211L (en) | 2004-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20170126 |