CN101676514A - Pneumatic drill - Google Patents
Pneumatic drill Download PDFInfo
- Publication number
- CN101676514A CN101676514A CN200910139912A CN200910139912A CN101676514A CN 101676514 A CN101676514 A CN 101676514A CN 200910139912 A CN200910139912 A CN 200910139912A CN 200910139912 A CN200910139912 A CN 200910139912A CN 101676514 A CN101676514 A CN 101676514A
- Authority
- CN
- China
- Prior art keywords
- wear sleeve
- piston
- pressure head
- reverse pressure
- sleeve
- 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.)
- Pending
Links
Images
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
- 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 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
- E21B10/36—Percussion drill bits
Abstract
The invention provides a down-the-hole pneumatic hammer drill assembly. A backhead is secured to a wear sleeve for an impact piston and a drill bit is mounted in a chuck in the wear sleeve for limitedreciprocation remote from the backhead and providing an anvil for the piston. The piston has a stem of reduced diameter guided in a piston stem bush for impacting the bit. An exhaust flow passage isprovided passed the piston stem bush into a bore through the bit to vent air from a chamber around the pisto n stem when the bit is lifted from a working surface. The exhaust flow passage is either provided through the piston stem bush or by a recess partway along the piston stem. The assembly also has an annular passage with spaced apart ports communicating with an air supply passage through thebackhead at one end and with the interior of the wear sleeve at the other end. In one embodiment, the annular passage extends between the outer surface of a part of the wear sleeve having a reduced diameter and the inner surface of a shroud radially spaced from the surface of reduced diameter and secured to the wear sleeve. The annular passage is alternatively provided between th e inner surface of part of the wear sleeve having an increased diameter and the oute r surface of a skirt depending from the backhead with the skirt screw-threaded to enga ge within a screw-thread at the end of the wear sleeve for attachment of the backhead to the wear sleeve.
Description
Technical field
The present invention relates to a kind of pneumatic drill, more specifically relate to a class and be called the rig that " down-the-hole " bores.
Background technology
This class rig generally includes the air rammer that moves back and forth with drill hammer.The dimensions of drill bit must provide enough big hole for operating mechanism passes the passage of drilling rock.This operating mechanism can be positioned on the operation surface and the Compressed Gas that operating mechanism is provided with power is passed drilling rod to be sent to operating mechanism downwards from the hole subsequently.Need make this gas intermittent action so that driven plunger and piston is turned back to the original position of power stroke or impact stroke.Also need to discharge gas from mechanism.Preferably, especially when drill bit when operation surface rises and allows to drop down onto back-up ring the chuck, this gas is used for removing the rock of Drilling from operation surface.
These known and widely used mechanisms need miniaturization and confining gas passage.Current challenge is the efficient that improves to these rig supply gas, maintains the intensity of each parts under the down-the-hole operating condition simultaneously and the wear-resisting rate that avoids fault and be difficult to accept.
The concrete down-the-hole drill of related this type of has disclosed in the manual of the applicant's south african patent No.2005/03406, and this manual is incorporated this paper by reference into.
Rig disclosed in the above-mentioned manual uses the chamber separator with the otch of the inwall that source of the gas guided to wear sleeve from reverse pressure head end and around the otch of piston.Be formed at least one shoulder that is exposed in the operating process of rig under the air pressure around the otch of piston.This has increased the difficulty that balance makes the gas pressure of reciprocating motion of the pistons.More specifically, unless the suitably exhaust of chamber from forming the return stroke that piston is provided, when from operation surface withdrawal drill bit, piston will be proceeded to move back and forth.To be described in detail this below.Otch on the cylinder wall also needs to make its total wall thickness partly to sustain operational stresses induced at minimal material thickness.This will be limited in the yardstick of piston available in the rig that is designed to Drilling particular bore size.Any purposes that is formed by the occupied space of wall thickness material that has excessive strength characteristics with respect to basic minimum essential requirement all can increase the usefulness of the rig that will reach on the whole.
Summary of the invention
The objective of the invention is to solve related problem and alleviate influence the whole efficiency of this down-the-hole hammer drill assembly.
According to the present invention, a kind of pneumatic down-hole hammer drillstring component is provided, comprising: reverse pressure head (back joint, backhead), it comprises admission valve; The wear sleeve that is used for impact piston; Drill bit, it is installed in the chuck in the described wear sleeve and is limited reciprocating motion away from described reverse pressure head, and provides anvil block for described piston; Fluid path, it is formed by the otch on the wall of otch on the wall of described piston and described wear sleeve; And vertical circular passage, it runs through described wear sleeve and extends from the described reverse pressure head end of described assembly, be used to supply with the pressure fluid that drives described piston, wherein, described circular passage at one end has and runs through the isolated port of the source of the gas channel connection of described reverse pressure head, and has isolated port with the internal communication of described wear sleeve at the other end.
Another feature of the present invention is: extend between the inner surface of the external surface of the diameter reduction of described wear sleeve part and sleeve pipe described circular passage, and described sleeve pipe is radially with the external surface interval of described diameter reduction part and be fastened on the described wear sleeve; And make described sleeve pipe removably in place by the end that described reverse pressure head is installed to described wear sleeve.
Another feature of the present invention is: described circular passage is at the inner surface of the diameter-increasing portion of described wear sleeve and extend between the external surface in the sagging skirt section of described reverse pressure head, and described skirt thread screwed in is arranged in the screw thread of described wear sleeve end so that described reverse pressure head is installed on the described wear sleeve.
According to a further aspect in the invention, provide a kind of pneumatic down-hole hammer drillstring component, comprising: reverse pressure head, it comprises admission valve; The wear sleeve that is used for impact piston; Drill bit, it is installed in the chuck in the described wear sleeve and is limited reciprocating motion away from described reverse pressure head, and provides anvil block for described piston; Fluid path, it is formed by the otch on the wall of otch on the wall of described piston and described wear sleeve; And vertical circular passage, it runs through described wear sleeve and extends from the described reverse pressure head end of described assembly, be used to supply with the pressure fluid that drives described piston, wherein, extend between the inner surface of the external surface of the diameter reduction of described wear sleeve part and sleeve pipe described circular passage, and described sleeve pipe is radially with the external surface interval of described diameter reduction part and be fastened on the described wear sleeve.
According to a further aspect in the invention, provide a kind of pneumatic down-hole hammer drillstring component, comprising: reverse pressure head, it comprises admission valve; The wear sleeve that is used for impact piston; Drill bit, it is installed in the chuck in the described wear sleeve and is limited reciprocating motion away from described reverse pressure head, and provides anvil block for described piston; Fluid path, it is formed by the otch on the wall of otch on the wall of described piston and described wear sleeve; And vertical circular passage, it runs through described wear sleeve and extends from the described reverse pressure head end of described assembly, be used to supply with the pressure fluid that drives described piston, wherein, described circular passage is at the inner surface of the diameter-increasing portion of described wear sleeve and extend between the external surface in the sagging skirt section of described reverse pressure head, and described skirt thread screwed in is arranged in the screw thread of described wear sleeve end so that described reverse pressure head is installed on the described wear sleeve.
Description of drawings
To make above-mentioned and other feature of the present invention apparent below with reference to accompanying drawing to the explanation of the embodiment of the invention, wherein:
Fig. 1 shows the longitudinal section and the illustration that run through drilling machine components and shows modified example;
Fig. 2 shows the longitudinal section of the selectivity embodiment that runs through drilling machine components;
Fig. 3 shows the zoomed-in view of the part of Fig. 2; And
Fig. 4 shows the longitudinal section of another embodiment that runs through drilling machine components.
The specific embodiment
In the embodiment shown in fig. 1, by the inlet channel 2 in the reverse pressure head 3 Compressed Gas is directed in the drilling machine components 1.This gas is subsequently by distributing passage 4 to enter around the reverse passage 5 of pressure head 3 peripheries.
Wear sleeve or cylinder 6 have the cannelure that the wall thickness reduction is provided in its operation upside outer end.Form the circular passage 7 that extends longitudinally by the fastening sleeve pipe 8 in end above the wall thickness reduction part of wear sleeve 6.This fastening step will comprise seal 9 and can realize by methods such as welding.In the present embodiment, oppositely pressure head 3 is used for sleeve pipe 8 fastening in place with being threaded of wear sleeve 6.
Oppositely pressure head comprises the assembly of known flap valve 10 and control lever 11.
Fig. 1 shows on the inwall of wear sleeve 6 and along the position of the necessary otch of the outer wall of piston 12.These otch provide necessary flow path for the Compressed Gas that passes assembly so that the feasible piston 12 that impacts the anvil block of the operation upper end that is positioned at drill bit 13 moves back and forth.
Shown in state under, flap valve 10 cuts out and control lever 11 is withdrawn from piston 12.When applying Compressed Gas, flap valve 10 overcomes its spring bias and opens, and enters passage 5 in the reverse pressure head 3 and passes air inlet port 7A subsequently and flow to gas outlet 7B via the circular passage in the wear sleeve 67 thereby allow air-flow to pass passage 4.
In rig 1 operation, the head of piston 12 or operation upper end never move down and cross gas outlet 7B along wear sleeve 6.Piston 12 has the diameter of reduction and outwards is step-like and formation shoulder 15 in the underside area of chamber 14.In the step 15 that increases, otch 16 is set as shown in the figure.Shoulder 15 provides the stepped surfaces zone together with the bottom of otch 16 on piston 12, the stepped surfaces zone will be under the effect of gas-pressurized in the chamber 14 during use.This surf zone is called shoulder 15.
Run through piston 12 axial cavity thorax 17 is set, and this piston is operated the drilling rod 18 that downside free end has diameter reduction at it.The free end of drilling rod 18 forms the shock surface on the anvil block that acts on drill bit 13.
When being in impact zone in the operating process of the upper end of drill bit 13 at rig, the piston drilling rod lining 20 that fits into wear sleeve 6 plays the effect of guiding piece for the upper end of the drilling rod 18 of piston 12 and drill bit 13.
The diameter of piston drilling rod 18 reductions forms second chamber 21 in assembly 1, and the chuck that has back-up ring 23 22 of common form is positioned at the bottom of wear sleeve 6.This permission can limit freely moving axially of drill bit 13 when drill bit 13 does not contact with operation surface.
In of the present invention described embodiment shown in Figure 1, show vent ports 24 and 25 and run through piston drilling rod lining 20 from chamber 21 around drilling rod 18.Shown in illustration in the selectivity structure of piston drilling rod lining 20 has been shown.In this selectivity structure, along piston drilling rod 18 recess 27 of line of rabbet joint form is set partly, provide since the exhaust passage of second chamber 21 when being in its extended position with convenient drill bit 13.
When operation, enter chamber 14 and enter second chamber 21 from this by circular passage 7 compressed and supplied gases.
Pressure in the chamber 21 acts on the bottom surface of piston 12 and then pushing piston 12 upwards.In this trip, the some b that the some a on the piston 12 crosses in the chamber thorax of wear sleeve 6 enters chamber 21 to prevent gas.Piston drilling rod 18 is withdrawn from piston drilling rod lining 20, and then the gas in the chamber 21 is discharged in the atmosphere by the chamber thorax 28 in the drill bit 13.
Some c in the chamber thorax 17 of piston 12 crosses the some d on the control lever 11, and sealing centers on the upper chamber 26 of control lever 11 formation to prevent by chamber thorax 17 exhausts in the piston 12 thus.Cross the some f in the chamber thorax of wear sleeve 6 along with the some e on the piston, enter upper chamber 26 from the Compressed Gas of the chamber under the pressurized state 14.From the gas pressure of this upper chamber 26 act on piston 12 the upper end and be applied to piston 12 on shoulder 15 on pressure combine, thereby so that provide propulsive force to make the anvil block of piston impact drill bit 13 to piston.
At this moment, the some c in the chamber thorax of piston 12 moves down and crosses some d on the control lever 11, and then chamber 26 can be discharged to gas in the atmosphere by chamber thorax in the piston 12 and the chamber thorax in the drill bit 13.
When rig rose in boring, drill bit 13 fell in chuck 22 and descends and against back-up ring 23.Piston 12 is followed some g on drill bit 13 and the piston and is crossed some h in the wear sleeve 6 with chamber 21 and chamber 14 packings as a result.
Meanwhile, moving down of drill bit 13 opened the vent ports 24 that runs through piston drilling rod lining 20 and 25 to discharge from the pressure of chamber 21 and to allow by chamber thorax 28 exhausts in the drill bit 13.When rig 1 is in this purging (flushing) state, discharge most important from the pressure of chamber 21.Otherwise piston 12 will rebound and proceed to move back and forth.
Some i on this outer piston 12 crosses some j in the chamber thorax of wear sleeve 6 so that opening 7B leads to chamber 26, and then allows the source of the gas of pressurization to flow in the atmosphere by piston 12 and drill bit 13 and purge boring.Only when piston 12 is static, purge mode just occurs, and then opening 7B can be communicated with chamber thorax 17 and 28.
Illustration referring again among Fig. 1 is understandable that, when drill bit 19 rise and when leaving the operation surface of foot of hole moving down of drill bit 19 make piston 12 move down, drill-over bushing 20 is crossed in this position that will be accompanied by the line of rabbet joint 27 on the drilling rod 18.Like this, also will obtain the necessary exhaust of chamber 21.
In case place drill bit 13 on the operation surface once more and make drill bit 13 move back to wear sleeve 6, the reciprocating motion of piston will restart.
As mentioned above, when piston 12 carried out stroke, chamber 14 continued to be in pressurized state and alternately provides pressure to upper chamber 26 and lower chambers 21.Compressed Gas in return stroke on the shoulder 15 produces reaction to the rising of piston 12 continuously.The surface area of shoulder 15 is more little, will be more little to the reaction force of return stroke.In order to reach this point, to compare with existing drilling machine components, a solution is to use above-mentioned sleeve pipe.Below with reference to Fig. 2 and Fig. 3, show the selectivity structure of the drilling machine components 31 that also can obtain this effect, and below will be explained.
Piston drilling rod lining 41 is installed in the wear sleeve 37 and is positioned at the top of drill bit back-up ring 42.When drill bit 39 when as shown in Figure 2 job position rises, this back-up ring 42 can limit the free-falling of drill bit 39.Drilling rod lining 41 has annular waste air duct 43, and this annular waste air duct 43 extends longitudinally and intersects with gas outlet radially 44.When drill bit 39 rises and outwards moves from wear sleeve 37 and when realizing purging, operating gas will be discharged from assembly 31 via the axial passage 45 that runs through drill bit 39 in common mode from operation surface.
Be understandable that, can optionally annular waste air duct 43 be arranged between the upper outside and wear sleeve 37 of drilling rod lining 41 of diameter reduction, rather than the drilling rod lining 41 that runs through as shown in the figure extends.
The flow path 51 that importantly is used in the present embodiment make gas-pressurized enter operating assembly and is provided with.
Oppositely pressure head 32 be threaded into wear sleeve 37 the end and with this engages, in order to realize this point, external screw thread skirt section 49 extends to the wear sleeve 37 from the main body of reverse pressure head 32.Between the inner surface of wear sleeve 37 and skirt section 49, be provided with circular passage 51.Distribute passage 34 near 49 upper ends, skirt section, to be provided with the air inlet port 51A that leads to circular passage 51.Be adjacent to the otch that the gas outlet 51B of 49 lower ends, skirt section leads to the inside of wear sleeve 37 and is positioned at piston 38 upper ends from passage 51.Can in Fig. 3, more clearly see these parts.
In order to keep the proper wall thickness of wear sleeve 37, make that the operation upper end can be so that internal thread to be set so that the external screw thread on the reception skirt section 49.
In the present embodiment, at first the external diameter in skirt section 49 is arranged to the external diameter that cooperates greater than with the internal thread 37A standard that is positioned at wear sleeve 37 tops.As shown in the figure the outside in skirt section 49 is screwed in subsequently wear sleeve 37 the top and with this engages.Screw thread on the skirt section 49 is used to be increased to the thickness of the wall in skirt section 49.Thread depth among the shown embodiment is 3mm.This thread depth is added on the wall thickness in skirt section 49 so that it is firmer.This allows to be provided with bigger chamber thorax and realizes on the piston 38 surface area ratio preferably in skirt section 49.Simultaneously, can realize surface area less on the shoulder 47, this can improve on the piston of piston 38 and moves speed, thereby so that realizes that at per minute the more number of times that impacts shows better performance.
Fig. 4 shows another embodiment of rig 61.The source of the gas that enters wear sleeve 64 from reverse pressure head 62 can be described identical with above-mentioned arbitrary embodiment.Briefly, in wear sleeve 64, be provided with circular passage 63.In the present embodiment, the structure of the structure of rig and Fig. 2 and rig shown in Figure 3 is identical.The gas channel that otch provided in otch on the piston 65 and the wear sleeve 64 is also identical.Yet the operation lower end 66 of piston 65 is configured to be used with bottom valve pipe 67.The chamber thorax 68 of piston 65 engage with bottom valve pipe 67 so that eject gas above piston 65 when the impact stroke of piston 65 finishes, and when the return stroke end of piston piston 65 68 rises of chamber thorax and leave bottom valve pipe 67 so that eject gas below piston 65.Other operations are identical with above-described operation.
Drilling machine components of the present invention has improved the surface area ratio on the piston 38, thereby can obtain reliable return stroke, and can guarantee that when drill bit 39 moves to off position the mobile of piston 38 stops.This structure can also be kept the gratifying wall intensity of threaded skirt section 49 when still keeping above-mentioned miniaturization structure.
Above-mentioned down-the-hole drill has been alleviated related problem, and product efficient and that be easy to make can be provided.
Claims (6)
1. pneumatic down-hole hammer drillstring component comprises:
Reverse pressure head, it comprises admission valve;
The wear sleeve that is used for impact piston;
Drill bit, it is installed in the chuck in the described wear sleeve and is limited reciprocating motion away from described reverse pressure head, and provides anvil block for described piston;
Fluid path, it is formed by the otch on the wall of otch on the wall of described piston and described wear sleeve; And
Vertical circular passage, it runs through described wear sleeve and extends from the described reverse pressure head end of described assembly, is used to supply with the pressure fluid that drives described piston,
Wherein, described circular passage at one end has and runs through the isolated port of the source of the gas channel connection of described reverse pressure head, and has isolated port with the internal communication of described wear sleeve at the other end.
2. pneumatic down-hole hammer drillstring component as claimed in claim 1, wherein,
Extend between the inner surface of the external surface of the part of the described wear sleeve with diameter reduction and sleeve pipe described circular passage, described sleeve pipe radially with the external surface of described diameter reduction part at interval and be fastened on the described wear sleeve.
3. pneumatic down-hole hammer drillstring component as claimed in claim 2, wherein,
Make described sleeve pipe removably in place by the end that described reverse pressure head is installed to described wear sleeve.
4. pneumatic down-hole hammer drillstring component as claimed in claim 1, wherein,
Described circular passage is at the inner surface of the diameter-increasing portion of described wear sleeve and extend between the external surface in the sagging skirt section of described reverse pressure head, and described skirt thread screwed in is arranged in the screw thread of described wear sleeve end so that described reverse pressure head is installed on the described wear sleeve.
5. pneumatic down-hole hammer drillstring component comprises:
Reverse pressure head, it comprises admission valve;
The wear sleeve that is used for impact piston;
Drill bit, it is installed in the chuck in the described wear sleeve and is limited reciprocating motion away from described reverse pressure head, and provides anvil block for described piston;
Fluid path, it is formed by the otch on the wall of otch on the wall of described piston and described wear sleeve; And
Vertical circular passage, it runs through described wear sleeve and extends from the described reverse pressure head end of described assembly, is used to supply with the pressure fluid that drives described piston,
Wherein, extend between the inner surface of the external surface of the diameter reduction of described wear sleeve part and sleeve pipe described circular passage, and described sleeve pipe is radially with the external surface interval of described diameter reduction part and be fastened on the described wear sleeve.
6. pneumatic down-hole hammer drillstring component comprises:
Reverse pressure head, it comprises admission valve;
The wear sleeve that is used for impact piston;
Drill bit, it is installed in the chuck in the described wear sleeve and is limited reciprocating motion away from described reverse pressure head, and provides anvil block for described piston;
Fluid path, it is formed by the otch on the wall of otch on the wall of described piston and described wear sleeve; And
Vertical circular passage, it runs through described wear sleeve and extends from the described reverse pressure head end of described assembly, is used to supply with the pressure fluid that drives described piston,
Wherein, described circular passage is at the inner surface of the diameter-increasing portion of described wear sleeve and extend between the external surface in the sagging skirt section of described reverse pressure head, and
Described skirt thread screw-in is arranged in the screw thread of described wear sleeve end so that described reverse pressure head is installed on the described wear sleeve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA200806006 | 2008-07-10 | ||
| ZA2008/06006 | 2008-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101676514A true CN101676514A (en) | 2010-03-24 |
Family
ID=41565866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910139912A Pending CN101676514A (en) | 2008-07-10 | 2009-07-10 | Pneumatic drill |
Country Status (6)
| Country | Link |
|---|---|
| KR (1) | KR20100007762A (en) |
| CN (1) | CN101676514A (en) |
| AU (1) | AU2009202750A1 (en) |
| CA (1) | CA2670999A1 (en) |
| CL (1) | CL2009001562A1 (en) |
| ZA (1) | ZA200904814B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094576A (en) * | 2010-12-01 | 2011-06-15 | 卢丹 | Crushing mechanism |
| CN103210170A (en) * | 2010-10-28 | 2013-07-17 | 伯纳德·莱昂内尔·吉安 | A down-the-hole hammer drill assembly |
| CN110230467A (en) * | 2019-07-02 | 2019-09-13 | 诸暨欧亿自动化设备有限公司 | A kind of geology rock mining device based on carbon dioxide explosion |
| CN110748292A (en) * | 2019-10-14 | 2020-02-04 | 潍坊学院 | Wind pressure electromagnetism combined impactor |
| CN111622664A (en) * | 2020-05-07 | 2020-09-04 | 南京航创特种机器人有限公司 | High-distribution impacter of soil drilling machine special for industrial robot |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337839B (en) * | 2011-09-06 | 2013-12-11 | 中国石油化工股份有限公司 | Directionally rotating type air hammer |
| WO2017013597A1 (en) * | 2015-07-20 | 2017-01-26 | Gien Bernard L | A pneumatic drill hammer |
| CN105353404B (en) * | 2015-12-02 | 2017-07-04 | 西南石油大学 | A kind of nearly drill bit bump focus pipe nipple in gas drilling shaft bottom |
| WO2017118963A1 (en) * | 2016-01-10 | 2017-07-13 | Gien Bernard L | A pneumatic drill hammer |
| WO2020188530A2 (en) * | 2019-03-20 | 2020-09-24 | Gien Bernard L | A drill hammer |
| CN117145379B (en) * | 2023-10-31 | 2024-01-30 | 长沙黑金刚实业有限公司 | Reverse circulation impactor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3896886A (en) * | 1973-08-10 | 1975-07-29 | Bakerdrill Inc | Bore hole hammer drill |
| US3964551A (en) * | 1974-09-20 | 1976-06-22 | Reed Tool Company | Pneumatic impact drilling tool |
| US4333537A (en) * | 1978-11-24 | 1982-06-08 | Harris Jesse W | Impact drilling tool having improved valving |
| CN86106885A (en) * | 1985-10-04 | 1987-04-01 | 利根钻探株式会社 | Air pressure percussive drilling method and device therefor |
| CN1234092A (en) * | 1996-08-23 | 1999-11-03 | 布鲁克斯·H·杰文斯 | Rotary-percussion drill apparatus and method |
| WO2008051132A1 (en) * | 2006-10-26 | 2008-05-02 | Sandvik Intellectual Property Ab | Air actuated down- the -hole hammer and drill bit and foot valve for use in the hammer |
-
2009
- 2009-07-07 CA CA002670999A patent/CA2670999A1/en not_active Abandoned
- 2009-07-07 AU AU2009202750A patent/AU2009202750A1/en not_active Abandoned
- 2009-07-09 KR KR1020090062549A patent/KR20100007762A/en not_active Application Discontinuation
- 2009-07-09 ZA ZA200904814A patent/ZA200904814B/en unknown
- 2009-07-09 CL CL2009001562A patent/CL2009001562A1/en unknown
- 2009-07-10 CN CN200910139912A patent/CN101676514A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3896886A (en) * | 1973-08-10 | 1975-07-29 | Bakerdrill Inc | Bore hole hammer drill |
| US3964551A (en) * | 1974-09-20 | 1976-06-22 | Reed Tool Company | Pneumatic impact drilling tool |
| US4333537A (en) * | 1978-11-24 | 1982-06-08 | Harris Jesse W | Impact drilling tool having improved valving |
| CN86106885A (en) * | 1985-10-04 | 1987-04-01 | 利根钻探株式会社 | Air pressure percussive drilling method and device therefor |
| CN1234092A (en) * | 1996-08-23 | 1999-11-03 | 布鲁克斯·H·杰文斯 | Rotary-percussion drill apparatus and method |
| WO2008051132A1 (en) * | 2006-10-26 | 2008-05-02 | Sandvik Intellectual Property Ab | Air actuated down- the -hole hammer and drill bit and foot valve for use in the hammer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210170A (en) * | 2010-10-28 | 2013-07-17 | 伯纳德·莱昂内尔·吉安 | A down-the-hole hammer drill assembly |
| CN103210170B (en) * | 2010-10-28 | 2015-08-05 | 伯纳德·莱昂内尔·吉安 | Down-hole hammer drill assembly |
| CN102094576A (en) * | 2010-12-01 | 2011-06-15 | 卢丹 | Crushing mechanism |
| CN102094576B (en) * | 2010-12-01 | 2013-12-25 | 卢丹 | Crushing mechanism |
| CN110230467A (en) * | 2019-07-02 | 2019-09-13 | 诸暨欧亿自动化设备有限公司 | A kind of geology rock mining device based on carbon dioxide explosion |
| CN110748292A (en) * | 2019-10-14 | 2020-02-04 | 潍坊学院 | Wind pressure electromagnetism combined impactor |
| CN110748292B (en) * | 2019-10-14 | 2021-06-29 | 潍坊学院 | Wind pressure electromagnetism combined impactor |
| CN111622664A (en) * | 2020-05-07 | 2020-09-04 | 南京航创特种机器人有限公司 | High-distribution impacter of soil drilling machine special for industrial robot |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2009202750A1 (en) | 2010-01-28 |
| CA2670999A1 (en) | 2010-01-10 |
| KR20100007762A (en) | 2010-01-22 |
| AU2009202750A8 (en) | 2010-04-15 |
| CL2009001562A1 (en) | 2010-08-06 |
| AU2009202750A9 (en) | 2010-04-22 |
| ZA200904814B (en) | 2010-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101676514A (en) | Pneumatic drill | |
| US8141663B2 (en) | Down hole hammer having elevated exhaust | |
| US7784561B2 (en) | Ground drilling hammer and the driving method | |
| CN105026111B (en) | Hydraulic hammer with coaxial accumulator and piston | |
| US5131476A (en) | Down hole percussion drill apparatus | |
| CA2461985C (en) | Down-the-hole drill assembly | |
| US7469751B2 (en) | Pneumatic hammer | |
| US6550554B2 (en) | Rock drill | |
| US4821812A (en) | Down hole drill improvement | |
| JPS6311511B2 (en) | ||
| CN201031614Y (en) | Hydraulic impacter for well drilling | |
| US6543557B2 (en) | Drill hammer assembly | |
| US5915483A (en) | Down the hole drill | |
| US6499544B1 (en) | Percussive down-the-hole hammer for rock drilling, and a one-way valve used therein | |
| EP0204243A2 (en) | Rock Drills | |
| NO324972B1 (en) | Hydraulic drill string accumulator | |
| WO2017118963A1 (en) | A pneumatic drill hammer | |
| KR200434274Y1 (en) | Valveless air hammer and bit | |
| EP1138870A1 (en) | Drill hammer assembly | |
| WO2020039393A1 (en) | A percussion mechanism | |
| CA2469886C (en) | A percussive downhole hammer and piston design for such a hammer | |
| AU7203800A (en) | A rock drill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100324 |