KR20090054192A - Hammer bit for digging - Google Patents
Hammer bit for digging Download PDFInfo
- Publication number
- KR20090054192A KR20090054192A KR1020070120929A KR20070120929A KR20090054192A KR 20090054192 A KR20090054192 A KR 20090054192A KR 1020070120929 A KR1020070120929 A KR 1020070120929A KR 20070120929 A KR20070120929 A KR 20070120929A KR 20090054192 A KR20090054192 A KR 20090054192A
- Authority
- KR
- South Korea
- Prior art keywords
- bit
- hammer
- groove
- pilot
- pilot bit
- Prior art date
Links
- 238000005553 drilling Methods 0.000 claims abstract description 33
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 12
- 239000004575 stone Substances 0.000 abstract description 9
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
-
- 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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- 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
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 present invention relates to a drill hammer bit that improves the fastening structure between the pilot bit and the outer bit constituting the drill hammer bit used for drilling the ground or rock (stone layer) directly; On the front end is provided with a plurality of first cutting tips, the rear end of the pilot bit is supported by the hammer, and the front end of the pilot bit is formed of an outer bit which is provided with a plurality of second cutting tips in the front end The pilot bit may include a plurality of first guide grooves having the same shape in the front and rear direction on an outer circumferential surface of the body, and a second guide groove crossing the first guide grooves is formed along the outer circumferential surface of the body. When the first and second guide grooves are formed with a locking groove at one side of the intersection portion, a stopper portion is formed at the rear end of the second guide groove, and the outer bit is guided to the first guide groove to be supported by the stopper portion. It characterized in that the locking projection is formed to be engaged to the locking groove when rotating to one side.
According to the present invention, by improving the fastening structure of the pilot bit and the outer bit constituting the drilling hammer bit, when the outer bit is fastened to the front of the pilot bit, the operator does not need to adjust the position there is an advantage that the fastening operation is easy .
Perforated, hammer, beat
Description
The present invention relates to a drill hammer bit, and more particularly, to a drill hammer bit that improves the fastening structure of the pilot bit and the outer bit constituting the drill hammer bit used for direct drilling of the ground or rock (stone layer) It is about.
In general, to construct a concrete structure such as a bridge or a building, or to prevent the collapse of the construction due to the ground subsidence during civil engineering, the casing is installed after drilling the ground or rock (stone layer) directly with an excavation device.
Excavation equipment used to dig such ground or rock (stone layer) is provided with a drill hammer bit 1 as shown in Figs. 1 to 3 at one end of the hammer.
At this time, the drilling hammer bit (1) is rotated with the hammer that rotates by the hydraulic or pneumatic inflow from the outside.
At this time, the drilling hammer bit (1) is formed with a plurality of
More specifically, the
In addition, the
On the other hand, the
Accordingly, in order to fasten the
In such a state, when directly drilling the ground or rock (stone layer) or the like, when the
By the way, the
Accordingly, in order to fasten the
Therefore, it is not easy for the operator to fasten the
Accordingly, to solve these problems, an object of the present invention is to improve the fastening structure of the pilot bit and the outer bit used to drill the ground or rock (stone layer) for easy drilling and drilling work excellent for workability To provide a bit.
The present invention for achieving the above object;
On the front end is provided with a plurality of first cutting tips, the rear end of the pilot bit is supported by the hammer, and the front end of the pilot bit is formed of an outer bit which is provided with a plurality of second cutting tips in the front end In;
The pilot bit has a plurality of first guide grooves having the same shape in the front-rear direction on the outer circumferential surface of the body, and a second guide groove crossing the first guide groove is formed along the outer circumferential surface of the body, A locking groove is formed at one side of the first guide portion and the second guide groove, and a stopper portion is formed at a rear end of the second guide groove;
When the outer bit is guided to the first guide groove and supported by the stopper part, the outer bit provides a bit for the drilling hammer, wherein a locking protrusion is formed to be engaged with the locking groove when rotated to one side.
According to the present invention, by improving the fastening structure of the pilot bit and the outer bit constituting the drilling hammer bit, when the outer bit is fastened to the front of the pilot bit, the operator does not need to adjust the position there is an advantage that the fastening operation is easy .
With reference to the accompanying drawings, the drilling hammer bit according to the present invention will be understood by the embodiments described in detail below.
At this time, Figure 4 is an exploded perspective view showing a drill hammer bit according to the invention, Figure 5 is a combined perspective view showing a drill hammer bit according to Figure 4, Figure 6 is a drill hammer bit according to Figure 4 7 is a view illustrating a coupling structure, and FIG. 7 illustrates another embodiment of the drilling hammer bit according to the present invention, and FIG. 8 illustrates another embodiment of the drilling hammer bit according to the present invention. One drawing.
First, according to FIGS. 4 to 6, the
Hereinafter, the components of the drilling hammer bit according to the present invention will be described in more detail.
The
Therefore, compressed air is guided along the
The
In this case, a
In addition, a
On the other hand, the
In addition, an
At this time, the
When the
Therefore, the
On the other hand, the
Therefore, the
On the other hand, the
Hereinafter, the fastening process of the drilling hammer bit according to the present invention with reference to Figures 4 to 6 will be described in detail.
First, in order to fasten the
In this case, when the
As such, when the
Then, if the rotation continues while moving along the second guide groove (112b), the locking jaw portion (122b) of the
As the horizontal rotation is performed at a predetermined angle as described above, a constant space portion (not shown) is formed by the
On the other hand, if you want to drill the ground or rock (stone layer) and the like in this state, the
7 is a view showing another embodiment of the drilling hammer bit according to the present invention, the shape of the
Therefore, in order to fix the
On the other hand, Figure 8 is a view showing another embodiment of the drilling hammer bit according to the present invention, the
That is, a
By separating and manufacturing the
As described above, embodiments of the present invention have been described in detail, but the scope of the present invention is not limited thereto, and the scope of the present invention extends to the range substantially equivalent to the embodiments of the present invention.
1 is an exploded perspective view showing a bit for a general drilling hammer.
2 is a front view of the bit for the drilling hammer according to FIG.
3 shows a cross section of the drill hammer bit according to FIG. 1;
Figure 4 is an exploded perspective view showing the drilling hammer bit in accordance with the present invention.
5 is a perspective view of the combination of the drilling hammer bit according to FIG.
6 is a view showing for explaining the coupling structure of the drilling hammer bit according to FIG.
7 shows another embodiment of a drill hammer bit in accordance with the present invention.
8 shows yet another embodiment of a drill hammer bit in accordance with the present invention.
*** Explanation of symbols for main parts of drawing ***
100: drilling hammer bit 110: pilot bit
112:
112b:
114: first cutting tip 115: stopper portion
116: load 120: outer bit
122: engaging
122b: locking jaw portion 124: second cutting tip
130: case
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070120929A KR20090054192A (en) | 2007-11-26 | 2007-11-26 | Hammer bit for digging |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070120929A KR20090054192A (en) | 2007-11-26 | 2007-11-26 | Hammer bit for digging |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20090054192A true KR20090054192A (en) | 2009-05-29 |
Family
ID=40861405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070120929A KR20090054192A (en) | 2007-11-26 | 2007-11-26 | Hammer bit for digging |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20090054192A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101246305B1 (en) * | 2010-09-08 | 2013-03-21 | 이문수 | Direct boring bit |
KR101468567B1 (en) * | 2013-02-15 | 2014-12-03 | 이문수 | Bit assembly |
KR101522197B1 (en) * | 2013-07-29 | 2015-05-21 | 김명중 | Down hole bit assembly |
KR20150110997A (en) * | 2014-03-24 | 2015-10-05 | (주)씨엔피텍 | Drilling bit |
WO2017078311A1 (en) * | 2015-11-02 | 2017-05-11 | (주)씨엔피텍 | Excavation bit |
WO2017116001A1 (en) * | 2015-12-29 | 2017-07-06 | 동림산업 주식회사 | Head-enhanced drill bit |
KR102240908B1 (en) * | 2020-02-18 | 2021-04-14 | 윤택규 | Telescopic Direction-keep Semi-shild Method |
KR20240044624A (en) | 2022-09-29 | 2024-04-05 | 주식회사 펠콘 | Excavating bit and apparatus for direct boring comprising the same |
-
2007
- 2007-11-26 KR KR1020070120929A patent/KR20090054192A/en active Search and Examination
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101246305B1 (en) * | 2010-09-08 | 2013-03-21 | 이문수 | Direct boring bit |
KR101468567B1 (en) * | 2013-02-15 | 2014-12-03 | 이문수 | Bit assembly |
KR101522197B1 (en) * | 2013-07-29 | 2015-05-21 | 김명중 | Down hole bit assembly |
KR20150110997A (en) * | 2014-03-24 | 2015-10-05 | (주)씨엔피텍 | Drilling bit |
WO2017078311A1 (en) * | 2015-11-02 | 2017-05-11 | (주)씨엔피텍 | Excavation bit |
WO2017116001A1 (en) * | 2015-12-29 | 2017-07-06 | 동림산업 주식회사 | Head-enhanced drill bit |
KR102240908B1 (en) * | 2020-02-18 | 2021-04-14 | 윤택규 | Telescopic Direction-keep Semi-shild Method |
KR20240044624A (en) | 2022-09-29 | 2024-04-05 | 주식회사 펠콘 | Excavating bit and apparatus for direct boring comprising the same |
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AMND | Amendment | ||
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B601 | Maintenance of original decision after re-examination before a trial | ||
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