WO2011016005A4 - Bit assembly for a down-the-hole hammer drill - Google Patents
Bit assembly for a down-the-hole hammer drill Download PDFInfo
- Publication number
- WO2011016005A4 WO2011016005A4 PCT/IB2010/053549 IB2010053549W WO2011016005A4 WO 2011016005 A4 WO2011016005 A4 WO 2011016005A4 IB 2010053549 W IB2010053549 W IB 2010053549W WO 2011016005 A4 WO2011016005 A4 WO 2011016005A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- assembly
- splines
- bit
- drill bit
- 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.)
- Ceased
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
- E21B4/14—Fluid operated 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
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)
- Percussive Tools And Related Accessories (AREA)
- Drilling Tools (AREA)
- Drilling And Boring (AREA)
Abstract
The invention provides for a down-the-hole drill bit (11 ) assembly comprising a drill bit (11 ) having a screw-thread (7) at its anvil end, external splines on the drill shank (13) and cooperating splines (9) within a drill casing as well as a co-operating screw thread (7) carried by a component within the casing. The assembly is arranged to have engagement of the splines (9) with the screw threads (7) disengaged for driving the drill and to have the screw threads (7) engaged and splines (9) disengaged to permit removal of the bit from the assembly.
Claims
A down-the-hole drill bit assembly comprising a drill bit having a screw- thread at its anvil end and splines and co-operating splines and a cooperating screw thread carried by a component within the casing, the assembly being arranged to have engagement of the splines with the screw threads disengaged for driving the drill and the screw threads engaged and splines disengaged to permit removal of the bit from the assembly.
A drill bit assembly as claimed in claim 1 in which the screw thread and splines are on the drill bit shank.
A drill bit assembly as claimed in claim 1 in which the screw thread is within a bore in the anvil end of the drill bit shank.
A drill bit assembly as claimed any one of the proceeding claims in which splines are an integral part of the casing.
A drill bit assembly as claimed in any one of claims 1 to 3 in which the splines are an integral part of a chuck member secured in the casing.
A drill bit assembly as claimed in claim 5 which the co-operating threads are inside a chuck.
A drill bit assembly as claimed in claim 3 in which the co-operating threads are on a fixed, rotary or axially movable control member.
A chuck for a drill bit assembly as claimed in claim 1 comprising at its operatively upper end a bush at the lower end of which is an internal thread, internal splines extending below the thread having an internal diameter greater than the internal diameter of the thread, the external surface of the chuck providing a seat for a wear sleeve and operatively above the seat an external screw thread adapted to engage an internal screw thread in a wear sleeve.
9. A drill bit assembly having a drill head adapted to operatively engage in the bottom of a drill chuck, external splines set back from the drill head and adapted to engage internal splines in the chuck having an internal screw thread with an internal diameter less than that of the external splines on the bit and the end of a drill shank having an external screw thread along part thereof adjacent its bit anvil to engage and pass through a complementary screw thread in the drill bit chuck.
10. A drill bit assembly as claimed in claim 9 in which the bottoms of the internal splines in the chuck and external splines on the bit each are shaped as one turn of a helical cam with a pitch equal to that of a screw thread in the chuck to provide for rotation of the bit with the chuck.
11. A drill bit assembly as claimed in claim 1 in which the bit has a screw thread extending from the anvil and which is engageable with complementary screw thread on a bit mounting such that the engagement of the screw threads provides for the bit to be moved into and out of limited sliding engagement with the mounting by the passage of screw threads one though the other.
12. A drill bit assembly as claimed in claim 1 1 in which the bit and bit mounting carry mating splines engaged when the screw threads have passed one through the other.
13. A drill bit assembly as claimed in claim 12 in which the mounting is a chuck or a control rod in which assembly the screw threads will be externally on the rod and within a bore provided in the anvil end of the bit.
14. A drill bit assembly as claimed in claim 1 which the bit has a series of splines along its shank and a screw thread within an axial bore extending from the anvil end of the shank, a series of internal splines extending from the end of the assembly wear-sleeve to co-operate with the splines on the bit shank and a rod in the assembly with a screw thread engageable with the screw thread in the shank and means for sliding the rod relative to the bit to engage and disengage the splines.
15. A drill bit assembly as claimed in claim 14 in which the rod to be a distributor control rod extending from the backhead of the assembly, for the drill assembly to be a cluster drill including assemblies above defined wherein the rods are individually or collectively movable and rotatabie.
16. A drill bit assembly as claimed in claim 15 in which the screw threads are disengageable to permit the bit to be moved around the rod to index its position in the assembly and engaged to release the bit from the assembly.
17. A down-the-hole drill bit assembly comprising a casing supporting in its operative end a resilient split retainer ring and a drill bit shank carrying splines around its anvil end for sliding engagement in co-operative splines in the casing to open the split ring for passage of the bit shank splines into and out of the casing.
18. A down-the-hole drill bit assembly as claimed in claim 17 in which the ends of the splines on the bit shank and the upper and lower edges of the inner surface of the split ring are tapered. A down-the-hole drill bit assembly as claimed in clairh 17 or 18 in which the operative end of the casing is provided by a chuck.
A down-the-hole bit assembly as claimed in any one of claims 17 to 20 in which is included a slideable control rod with a free end engageable with free end of the bit anvil to move the bit shank through the retainer ring.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2807341A CA2807341A1 (en) | 2009-08-05 | 2010-08-05 | Bit assembly for a down-the-hole hammer drill |
| AU2010280347A AU2010280347A1 (en) | 2009-08-05 | 2010-08-05 | Bit assembly for a down-the-hole hammer drill |
| EP10806133A EP2462303A2 (en) | 2009-08-05 | 2010-08-05 | Bit assembly for a down-the-hole hammer drill |
| CN201080044748.1A CN102648327B (en) | 2009-08-05 | 2010-08-05 | Drill bit assembly for down-the-hole hammer drills |
| US13/389,099 US20120145464A1 (en) | 2009-08-05 | 2010-08-05 | Bit assembly for a down-the-hole hammer drill |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA200905462 | 2009-08-05 | ||
| ZA2009/05462 | 2009-08-05 | ||
| ZA2009/06560 | 2009-09-21 | ||
| ZA200906560 | 2009-09-21 | ||
| ZA201004208 | 2010-06-14 | ||
| ZA2010/04208 | 2010-06-14 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2011016005A2 WO2011016005A2 (en) | 2011-02-10 |
| WO2011016005A3 WO2011016005A3 (en) | 2011-04-14 |
| WO2011016005A4 true WO2011016005A4 (en) | 2011-06-03 |
Family
ID=43544735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2010/053549 Ceased WO2011016005A2 (en) | 2009-08-05 | 2010-08-05 | Bit assembly for a down-the-hole hammer drill |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20120145464A1 (en) |
| EP (1) | EP2462303A2 (en) |
| KR (1) | KR20120076344A (en) |
| CN (1) | CN102648327B (en) |
| AU (1) | AU2010280347A1 (en) |
| CA (1) | CA2807341A1 (en) |
| CL (1) | CL2012000293A1 (en) |
| WO (1) | WO2011016005A2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103460910A (en) * | 2013-09-26 | 2013-12-25 | 赵松辰 | Nut type drill bit fixing sleeve of corn harvester |
| EP2873799B1 (en) * | 2013-11-18 | 2017-06-14 | Sandvik Intellectual Property AB | Down-the-hole hammer drill bit assembly |
| CN105569563A (en) * | 2015-12-31 | 2016-05-11 | 长安大学 | Rotary drilling rig bit capable of impact drilling |
| KR20220101727A (en) * | 2019-11-28 | 2022-07-19 | 민콘 인터내셔널 리미티드 | Drill Bit Assemblies for Fluid Actuated Impact Drill Tools |
| US12523102B2 (en) * | 2023-07-28 | 2026-01-13 | Center Rock, Inc. | Down-the-hole hammer having an inverted casing |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070813U (en) * | 1990-03-10 | 1991-02-06 | 王克春 | Division detachable in hole drill bit for stud wheel |
| US5065827A (en) * | 1990-12-21 | 1991-11-19 | Smith International, Inc. | Hammer bit retention tool |
| US5150636A (en) * | 1991-06-28 | 1992-09-29 | Loudon Enterprises, Inc. | Rock drill bit and method of making same |
| US5562170A (en) * | 1995-08-30 | 1996-10-08 | Ingersoll-Rand Company | Self-lubricating, fluid-actuated, percussive down-the-hole drill |
| US6810974B2 (en) * | 2000-09-22 | 2004-11-02 | Atlas Copco Ab | Quick release drill bit for down-hole drills |
| GB2385869A (en) * | 2002-03-01 | 2003-09-03 | Halco Drilling Internat Ltd | Retaining broken drill in rock drilling apparatus |
| US7267185B2 (en) * | 2004-11-08 | 2007-09-11 | Smith International, Inc. | Bit retainer system |
| IES20050495A2 (en) * | 2005-07-20 | 2006-11-01 | Minroc Techn Promotions Ltd | A drill bit assembly for fluid-operated percussion drill tools |
| ZA200606939B (en) * | 2005-08-25 | 2007-11-28 | Gien Bernard L | A dril bit |
| IES20060005A2 (en) * | 2006-01-04 | 2007-02-21 | Minroc Techn Promotions Ltd | A drill bit assembly for fluid-operated percussion drill tools |
| US20080156539A1 (en) * | 2006-12-28 | 2008-07-03 | Ziegenfuss Mark R | Non-rotating drill system and method |
-
2010
- 2010-08-05 AU AU2010280347A patent/AU2010280347A1/en not_active Abandoned
- 2010-08-05 EP EP10806133A patent/EP2462303A2/en not_active Withdrawn
- 2010-08-05 CA CA2807341A patent/CA2807341A1/en not_active Abandoned
- 2010-08-05 KR KR1020127005839A patent/KR20120076344A/en not_active Withdrawn
- 2010-08-05 WO PCT/IB2010/053549 patent/WO2011016005A2/en not_active Ceased
- 2010-08-05 CN CN201080044748.1A patent/CN102648327B/en not_active Expired - Fee Related
- 2010-08-05 US US13/389,099 patent/US20120145464A1/en not_active Abandoned
-
2012
- 2012-02-03 CL CL2012000293A patent/CL2012000293A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP2462303A2 (en) | 2012-06-13 |
| KR20120076344A (en) | 2012-07-09 |
| US20120145464A1 (en) | 2012-06-14 |
| WO2011016005A3 (en) | 2011-04-14 |
| WO2011016005A2 (en) | 2011-02-10 |
| CN102648327A (en) | 2012-08-22 |
| AU2010280347A1 (en) | 2012-03-22 |
| CA2807341A1 (en) | 2011-02-10 |
| CL2012000293A1 (en) | 2012-11-30 |
| CN102648327B (en) | 2015-05-13 |
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