CN104329029A - Impact drilling bit - Google Patents
Impact drilling bit Download PDFInfo
- Publication number
- CN104329029A CN104329029A CN201410692261.4A CN201410692261A CN104329029A CN 104329029 A CN104329029 A CN 104329029A CN 201410692261 A CN201410692261 A CN 201410692261A CN 104329029 A CN104329029 A CN 104329029A
- Authority
- CN
- China
- Prior art keywords
- pore
- face
- drill
- drilling bit
- end surface
- 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
- 238000005553 drilling Methods 0.000 title claims abstract description 20
- 239000011148 porous material Substances 0.000 claims description 80
- 210000000515 tooth Anatomy 0.000 claims description 12
- 239000011435 rock Substances 0.000 abstract description 24
- 239000004576 sand Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 235000011837 pasties Nutrition 0.000 description 8
- 239000002893 slag Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000007654 immersion Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration 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
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
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
The invention discloses an impact drilling bit. The impact drilling bit comprises a drilling bit body and a drill rod, wherein the head of the drilling bit body is provided with a circular end surface; an annular slope is arranged on the periphery of the end surface obliquely from top to bottom and from inside to outside; the end surface is perpendicular to the axis of the drilling bit body; a plurality of internal teeth are arranged on the end surface; a plurality of edge teeth are arranged on the annular slope; a side air vent is formed in the front side surface of the drilling bit body, is communicated with a main air vent formed in the drill rod, and is formed obliquely from top to bottom and from inside to outside; an end surface air vent which is communicated with the side air vent is formed in the end surface; an internal opening of the end surface air vent is formed in the side air vent. The impact drilling bit can be applied to rock parts with small sand content and large water and sand contents at the same time; an impactor can work normally, and the generally high efficiency is maintained.
Description
Technical field
The present invention relates to a kind of drill bit, particularly relate to a kind of for the drill hammer compared with incompetent bed.
Background technology
Drill bit is the instrument of rig for bore operation, and drill bit is operationally connected with impactor, and impactor impels drill bit constantly to impact rock by the repeated action of jump bit to drill bit again while drive bit, reaches the object of fractured rock.For this wear-resisting but frangible material of rock, the impact of drill bit with rotate the penetration rate combined greatly accelerating rig.Produce because rig has a large amount of rock slag in boring procedure, disintegrating slag can be gathered between drilling rod and hole wall and produce the moment of resistance to the drilling rod rotated, rig is forced to quit work, therefore in prior art, the bottom of drill bit is all provided with a pore, a part from the high pressure draught of impactor can be blown by this pore and be hit the broken rock slag in drill bit front, and discharges boring with rock slag along the passage between drilling rod and hole wall.For the rock that mud content is less, the drill bit of bottom opening shows good effect, but in the rock mass that mud content is larger, this drill bit is performed poor, impactor is even caused to quit work, the out-of-work reason of impactor is mainly that the continuous impact of rock through impactor in the environment of immersion that mud content is larger forms pasty masses, this pasty masses can enter in the cavity of impactor by the pore bottom drill bit, all gas channels in stifled real impactor cavity, make it lose operation power, thus quit work.Also have side pore being arranged on drill bit in prior art, although impactor there will not be out-of-work situation, deslagging effect significantly reduces, and drilling efficiency obviously weakens.Baseboard of coal mine roadway rock stratum is not in most cases an isotropic body, changing greatly of lithology, and the less rock mass position of mud content there will not be pasty masses to clamp-on the situation of impactor cavity, and the drill bit that now pore is offered in bottom has higher efficiency; The rock mass position that mud content is more, the drill bit of side direction perforate can keep the normal work of impactor, though efficiency can reduce, but still can keep creeping into.
Summary of the invention
For above-mentioned technical problem, the object of the present invention is to provide a kind of drill hammer, the less rock mass position of mud content and the more and moisture more rock mass position of mud content can be applicable to simultaneously, and keep an overall higher efficiency.
The technical solution used in the present invention is:
A kind of drill hammer, comprise drill body and drilling rod, described drill body head is provided with circular end face, be positioned at described end face periphery and be provided with annular chamfer, described annular chamfer is obliquely installed from top to bottom from inside to outside, the axes normal of described end face and described drill body, described end face is provided with several internal tooths, described annular chamfer is provided with several heel teeths, side pore is offered in the side, front of described drill body, described side pore is connected with the main pore arranged in described drilling rod, described side pore from top to bottom ecto-entad is obliquely installed, described end face is provided with the end face pore be connected with described side pore, the inside opening of described end face pore is arranged in described side pore.
Drill hammer of the present invention, wherein, the section summation of described side pore and described end face pore is slightly less than the section of described main pore.
Drill hammer of the present invention, wherein, the inside opening of described end face pore has certain distance apart from the bottom, hole of described side pore.
Drill hammer of the present invention, wherein, the inside opening of described end face pore apart from described side pore bottom, hole between distance be 60% ~ 70% of main air vent aperture.
Drill hammer of the present invention, wherein, the folder degree of described side pore and described end face is 15 °.
Drill hammer of the present invention, wherein, the angle between described annular chamfer and described end face is between 40 ° ~ 45 °.
Drill hammer of the present invention, wherein, the outer surface of described drill body is provided with several slagging channels, arrange comparatively dark wider of the slagging channel wherein overlapped with described survey pore and run through the front portion of drill body.
Drill hammer of the present invention, wherein, described slagging channel and described heel teeth are respectively 5, and described heel teeth and the spaced arrangement of described slagging channel, described internal tooth has 3.
The beneficial effect of drill hammer of the present invention:
Drill hammer provided by the invention, the side of drill body is provided with side pore, the head end of drill body is provided with end face pore, the end face pore of drill body creep into moisture less soft-rock tunnel base plate or comparatively hard rock time play leading role, help raising drilling efficiency; The side pore of drill body plays a role when creeping into moisture larger soft rock, and can effectively be discharged from side pore by the pasty masses that the extruding of end face pore is come in, and prevents pasty masses from entering in impactor cavity.The present invention can be applicable to the less rock mass of mud content and moisture, that mud content is more rock mass simultaneously, can ensure that impactor is in normal operating conditions all the time, and the efficiency that maintenance one is overall higher.
Accompanying drawing explanation
Fig. 1 is the front view of drill hammer of the present invention;
Fig. 2 is the top view of drill hammer of the present invention;
Fig. 3 is the sectional view along A-A line in Fig. 2.
Below in conjunction with specific embodiments and the drawings, the invention will be further described.
Detailed description of the invention
As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of drill hammer, comprises drill body 1 and drilling rod 2, and drill body 1 head is provided with circular end face 11, be positioned at end face 11 periphery and be provided with annular chamfer 14, annular chamfer 14 is obliquely installed from top to bottom from inside to outside, the axes normal of end face 11 and drill body 1, and end face 11 is provided with 3 internal tooths 15, annular chamfer 14 is provided with 5 heel teeths 16, and the angle between annular chamfer 14 and end face 11 is between 40 ° ~ 45 °.Side pore 12 is offered in the side, front of drill body 1, side pore 12 is connected with the main pore 21 arranged in drilling rod 2, side pore 12 from top to bottom ecto-entad is obliquely installed, the angle of itself and end face 11 is 15 °, the lower edge of annular chamfer 14 is aimed in the outlet of side pore 12, end face 11 is provided with the end face pore 13 be connected with side pore 12, the inside opening of end face pore 13 is arranged in side pore 12 and there is certain distance the bottom, hole of distance side pore 12, and described distance size equals 60% ~ 70% of the aperture of main pore 21.The section summation of side pore 12 and end face pore 13 is slightly less than the section of main pore 21, and the outer surface of drill body 1 is provided with 5 slagging channels 17, wherein runs through the front portion of drill body 1 with survey that the slagging channel 17 that overlaps of pore 12 arranges comparatively deeply wider.
Drill hammer described in the present embodiment, side pore 12 plays a role when creeping into moisture larger soft rock, and can effectively be discharged from side pore 12 by the pasty masses that the extruding of end face pore is come in, and prevents pasty masses from entering in impactor cavity; End face pore 13 creep into moisture less soft-rock tunnel base plate or comparatively hard rock time play a role, and help raising drilling efficiency; End face pore 13 1 is the passage as eluting gas in the inside opening from end face pore 13, two is the spatial accommodations that can increase boring head end disintegrating slag, when being easy to be blown away by from the air-flow in side pore 12 after disintegrating slag enters the inside opening of end face pore 13, improve deslagging effect; Side pore 12 from top to bottom ecto-entad is obliquely installed, and the angle of itself and end face is 15 °, and the lower edge of annular chamfer 14 is aimed in the outlet of side pore 12, such setting is convenient to blow afloat disintegrating slag, improve deslagging efficiency, deslagging efficiency is higher, and the efficiency of drill bit detritus is also higher; The inside opening of end face pore 13 has certain distance apart from the bottom, hole of side pore 12, when the object retaining certain distance is to creep into immersion soft rock to the pasty masses side extruded into from end face pore 13 to air pressure, it is discharged from side pore 12; The section summation of side pore 12 and end face pore 13 is slightly less than the section of main pore 21, not only can not slow down after can ensureing air-flow approaching side pore 12 and end face pore 13 like this, on the contrary can speedup, favourable raising deslagging effect.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (8)
1. a drill hammer, it is characterized in that: comprise drill body (1) and drilling rod (2), described drill body (1) head is provided with circular end face (11), be positioned at described end face (11) periphery and be provided with annular chamfer (14), described annular chamfer (14) is obliquely installed from top to bottom from inside to outside, the axes normal of described end face (11) and described drill body (1), described end face (11) is provided with several internal tooths (15), described annular chamfer (14) is provided with several heel teeths (16), side pore (12) is offered in the side, front of described drill body (1), described side pore (12) is connected with the main pore (21) arranged in described drilling rod (2), described side pore (12) from top to bottom ecto-entad is obliquely installed, described end face (11) is provided with the end face pore (13) be connected with described side pore (12), the inside opening of described end face pore (13) is arranged in described side pore (12).
2. drill hammer according to claim 1, is characterized in that: the section summation of described side pore (12) and described end face pore (13) is slightly less than the section of described main pore (21).
3. drill hammer according to claim 1, is characterized in that: the inside opening of described end face pore (13) has certain distance apart from the bottom, hole of described side pore (12).
4. drill hammer according to claim 1, is characterized in that: the inside opening of described end face pore (13) apart from described side pore (12) bottom, hole between distance be 60% ~ 70% of main pore (21) aperture.
5. drill hammer according to claim 1, is characterized in that: described side pore (12) is 15 ° with the angle of described end face (11).
6. drill hammer according to claim 1, is characterized in that: the angle between described annular chamfer (14) and described end face (11) is between 40 ° ~ 45 °.
7. drill hammer according to claim 1, it is characterized in that: the outer surface of described drill body (1) is provided with several slagging channels (17), arrange comparatively dark wider of the slagging channel (17) wherein overlapped with described survey pore (12) and run through the front portion of drill body (1).
8. the drill hammer according to claim 1-7 any one, it is characterized in that: described slagging channel (17) and described heel teeth (16) are respectively 5, described heel teeth (16) and described slagging channel (17) spaced arrangement, described internal tooth (15) has 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692261.4A CN104329029A (en) | 2014-11-25 | 2014-11-25 | Impact drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692261.4A CN104329029A (en) | 2014-11-25 | 2014-11-25 | Impact drilling bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104329029A true CN104329029A (en) | 2015-02-04 |
Family
ID=52403824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410692261.4A Pending CN104329029A (en) | 2014-11-25 | 2014-11-25 | Impact drilling bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104329029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025828A (en) * | 2016-03-25 | 2018-12-18 | 福州麦辽自动化设备有限公司 | The fast drill bit of one kind three |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0345096A1 (en) * | 1988-06-03 | 1989-12-06 | Boart International Limited | Drill bit |
| US5025875A (en) * | 1990-05-07 | 1991-06-25 | Ingersoll-Rand Company | Rock bit for a down-the-hole drill |
| CN202755894U (en) * | 2012-08-24 | 2013-02-27 | 安徽理工大学 | Novel percussion drill |
| US20140291035A1 (en) * | 2011-10-27 | 2014-10-02 | Sandvik Intellectual Property Ab | Drill bit having a sunken button and rock drilling tool for use with such a drill bit |
| CN204299475U (en) * | 2014-11-25 | 2015-04-29 | 安徽理工大学 | A kind of drill hammer |
-
2014
- 2014-11-25 CN CN201410692261.4A patent/CN104329029A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0345096A1 (en) * | 1988-06-03 | 1989-12-06 | Boart International Limited | Drill bit |
| US5025875A (en) * | 1990-05-07 | 1991-06-25 | Ingersoll-Rand Company | Rock bit for a down-the-hole drill |
| US20140291035A1 (en) * | 2011-10-27 | 2014-10-02 | Sandvik Intellectual Property Ab | Drill bit having a sunken button and rock drilling tool for use with such a drill bit |
| CN202755894U (en) * | 2012-08-24 | 2013-02-27 | 安徽理工大学 | Novel percussion drill |
| CN204299475U (en) * | 2014-11-25 | 2015-04-29 | 安徽理工大学 | A kind of drill hammer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025828A (en) * | 2016-03-25 | 2018-12-18 | 福州麦辽自动化设备有限公司 | The fast drill bit of one kind three |
| CN109025828B (en) * | 2016-03-25 | 2020-06-09 | 胜利油田盛辉石油技术开发有限责任公司 | Three-speed drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150204 |
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| RJ01 | Rejection of invention patent application after publication |