WO2012041084A1 - 组合式潜孔锤 - Google Patents
组合式潜孔锤 Download PDFInfo
- Publication number
- WO2012041084A1 WO2012041084A1 PCT/CN2011/076226 CN2011076226W WO2012041084A1 WO 2012041084 A1 WO2012041084 A1 WO 2012041084A1 CN 2011076226 W CN2011076226 W CN 2011076226W WO 2012041084 A1 WO2012041084 A1 WO 2012041084A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- hole
- impactor
- hole hammer
- cylindrical
- Prior art date
Links
- 238000000926 separation method Methods 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 23
- 230000007704 transition Effects 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 14
- 238000005553 drilling Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005755 formation reaction Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
-
- 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
Definitions
- the present invention relates to a combined down-the-hole hammer.
- Foundation pile construction usually uses a drill to drive a drill bit to drill holes in the formation, and then puts a steel cage and concrete in the hole, and the concrete becomes a foundation pile after solidification; but when it encounters a hard formation, especially a rock formation, it is difficult to drill with a drill bit.
- an impactor also called a down-the-hole hammer
- the impactor has a function of high-efficiency drilling in a hard rock layer, it is widely used in mine opening and construction foundation construction.
- the threaded joint 61, the impactor body 62 containing the piston, and the impact drill 64 with the cemented carbide head 63, are generally ⁇ cp 300 mm in diameter; as shown in FIG.
- the down-the-hole hammer is connected to the power head of the drilling machine through the hollow drill pipe.
- the power head drives the down-the-hole hammer to rotate.
- the compressed air provided by the air compressor enters the impactor body through the drill pipe, driving the piston to reciprocate the drill bit at high frequency, impact energy.
- the cemented carbide head is transferred to the drill bit to reciprocate the rock to break it.
- the gas discharged from the rock with the hammer of the downhole is discharged through the annular gap between the drill pipe and the wall of the hole, and finally the pile hole is formed.
- the large-diameter integral type DTH hammer has high processing requirements, high manufacturing difficulty, easy quality problems and high manufacturing cost;
- U.S. Patent No. 4,429,439 discloses another cluster type down-the-hole hammer; as shown in Fig. 17, five small-diameter impactors are bundled together by the frame to form a large diameter.
- the down-the-hole hammer is connected to the drill pipe and the intake pipe by a taper threaded joint, and distributes compressed air to each small impactor through a transverse air path to drive the impact punching operation.
- the shortcomings of this clustered down-the-hole hammer are:
- the impactor of the center is different from the surrounding impactor under the same rotating condition, and the impact frequency (work) should be different, but the air pressure in the gas path is the same, the flow rate It is evenly divided, does not have an adjustment function, cannot effectively use energy, and has low efficiency.
- the outer peripheral portion of the impact drill disposed on the outer peripheral small-diameter impactor has different circumferential linear velocity from the inner portion, and the work is different, and the wear of the cemented carbide head distributed on the impact drill bit is different. Also, the outer hard alloy head wears faster than the inner side, the work is uneven, and the overall service life is low. 4. Due to the large diameter and heavy mass of the bundled down-the-hole hammer, the joint rotation requires the overall rotation, and requires a large torque to tighten the bundled down-hole hammer to achieve the required sealing performance, which is inconvenient to install and disassemble in the field.
- the present invention is directed to a combined down-the-hole hammer to solve at least one of the above problems in the prior art.
- the invention provides a combined down-the-hole hammer, comprising: a coupling for connecting with a drill pipe, a first gas passage is arranged inside; a bracket body; a plurality of impactors, mounted on the bracket body, each impactor a second gas passage is provided, and the impact drill of each impactor is rotatable about its own axis; a gas distribution device is connected between the coupling and the support body, and the gas separation device is provided with a gas collection chamber communicating with the first gas passage and A plurality of gas separation paths that connect the gas collection chambers to the second gas passages of the respective impactors.
- the impactor comprises: an impactor body mounted to the inside of the bracket body, and the piston body of the impactor body is provided with a piston cavity for mounting the impact piston; the impact drill bit mounted to the lower end of the piston cavity, the impact drill bit and the impactor body are axially The movement is rotatably fitted in a circumferential direction.
- the impact drill includes a connected impact head and a guide shaft; the upper portion of the guide shaft is provided with a limiting recess extending in the axial direction, and the limiting recess is sleeved with a limiting ring; the guiding shaft is inserted into the piston cavity, and the limit is The ring is limited by a positioning table disposed on the inner wall of the piston chamber and a guide sleeve mounted to the lower port of the piston chamber; the guide sleeve is disposed on the guide shaft.
- the axis of the at least one second gas passage of each of the second gas passages of each impactor is parallel to the axis of the first gas passage, and the plurality of second gas passages communicate with the gas separation of the at least one second gas passage and the plenum
- the axis of the road is a smooth transition curve.
- an air flow adjusting device is disposed on at least one of the air separation paths. Further, each of the air separation paths is respectively connected to the top of the corresponding second gas passage through the contraction-shaped transition air holes; the air flow adjusting device is a damping adjustment ring disposed at each of the transition air holes.
- the coupler includes a cylindrical connecting body forming a first gas passage, and the drill pipe is provided with a mounting hole that cooperates with the cylindrical connecting body, and the cylindrical connecting body and the drill pipe pass through the pin which is disposed between the two Shaft connection; a sealing structure is arranged between the cylindrical connecting body and the mounting hole.
- the pin shaft is at least two; the outer side wall of the cylindrical connecting body is formed with a rotation preventing table; the outer side wall of the cylindrical connecting body is provided with a horizontally extending first concave hole, and the drill pipe is horizontally extended and a second recessed hole intersecting the mounting hole, the pin being mounted in the second recessed hole and passing through the first recessed hole.
- the bracket body includes a cylindrical casing and an upper plate connected to an upper portion of the cylindrical casing, and a bottom plate connected to a lower portion of the cylindrical casing; and a positioning hole for mounting each impactor is disposed on the upper plate and the bottom plate;
- the upper end of the device has a cylindrical joint, the cylindrical joint has an inner hole forming a part of the second gas passage, the inner hole is connected with the air separation path, the outer circumference of the cylindrical joint is provided with a positioning ring groove, and the positioning of the cylindrical joint from the upper plate The hole is pierced and positioned by a positioning ring that is sleeved on the positioning ring groove.
- the positioning ring is a split positioning ring, and the positioning ring jacket is provided with a limiting sleeve, and the upper limit of the limiting sleeve is limited by the retaining ring and the retaining spring.
- a sealing groove is further disposed on the outer circumference of the cylindrical joint, and the sealing groove is located above the positioning ring groove.
- each impactor and the bottom plate are matched by a keyway and a connecting key; a sealed dustproof structure is arranged between the bottom plate and the impactor; the upper port of the cylindrical casing is sealed with the lower end surface of the gas distributing device, and the lower part of the gas distributing device A transition plate with a hole is provided between the end surface and the upper plate.
- a large-diameter combined DTH hammer consists of several small-diameter impactors with reasonable structure, simple manufacturing process, easy maintenance and low cost.
- the impact drill bit of each impactor can rotate around its own axis while rotating, so that the wear of the cemented carbide head on the impact drill bit tends to be balanced, which can be improved. Work efficiency and service life.
- the axis of the air separation path connecting the at least one second gas passage and the plenum in the plurality of gas separation paths is a smooth transition curve, so that the pressure loss of the compressed air in the second gas passage delivered to the peripheral impactors is small. , efficient.
- Fig. 1 is a schematic view showing a front view structure of a first embodiment of the present invention
- Fig. 2 is a view schematically showing a front cross-sectional structure of a first embodiment of the present invention
- FIG. 4 is a view schematically showing the bottom view structure of the first embodiment of the present invention
- Fig. 1 is a schematic view showing a front view structure of a first embodiment of the present invention
- Fig. 2 is a view schematically showing a front cross-sectional structure of a first embodiment of the present invention
- FIG. 4 is a view schematically showing the bottom view structure of the first embodiment of the present invention
- Fig. 1 is a schematic view showing a front view structure of a first embodiment of the present invention
- Fig. 2 is a view schematically showing a front cross-sectional structure of a first embodiment of the present invention
- FIG. 5 is a view schematically showing a connection structure of a first embodiment of the present invention and a drill pipe;
- Fig. 6 is a view schematically showing a connection structure of a first embodiment of the present invention with an auger rod;
- Fig. 7 is a view schematically showing the present invention The front view structure of the second embodiment;
- Fig. 8 is a view schematically showing the bottom view structure of the second embodiment of the present invention;
- FIG. 9 is a view schematically showing the front view of the impactor of the second embodiment of the present invention.
- Figure 15 shows a schematic diagram of the working flow of the combined down-the-hole hammer according to the present invention;
- Figure 16 shows the structure of the prior art down-the-hole hammer;
- Figure 17 shows the prior art combined down-the-hole hammer Main view structure and G direction view.
- DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.
- the combined down-the-hole hammer includes a coupler 1, a gas distributor 2, a support body 3, and an impactor 4.
- the coupler 1 is for connection to the drill pipe 5 and is internally provided with a first gas passage 10.
- the first gas passage 10 is in communication with the air passage of the drill pipe 5.
- the gas separation device 2 is connected between the coupler 1 and the holder body 3.
- a plurality of impactors 4 are mounted on the bracket body 3, and each of the impactors 4 is provided with a second gas passage 40.
- the impactor 4 includes a body 42 and a hammer bit 45 having a cemented carbide head 44 thereon.
- the gas separation device 2 is provided with a gas collection chamber 21 communicating with the first gas passage 10 and a plurality of gas separation passages for communicating the gas collection chamber 21 with the second gas passages 40 of the respective impactors 4, respectively. twenty two.
- the coupling 1, the gas dividing device 2 and the bracket body 3 can be connected in the following manner, and the first flange 12 is provided at the lower end of the coupling 1, and the upper end of the first flange and the gas distributing device 2 is passed through the bolt 27 or Screw connection.
- a second flange 24 is provided at the lower end of the gas separation device 2, and the second flange 24 is connected to the upper end of the holder body 3 by bolts 37 or screws.
- a seal ring 25 is installed between the coupler 1 and the air separation device 2.
- the number of the impactors 4 is five, one of which is centrally disposed, and the other four impactors are evenly arranged around the middle of the impactor.
- the second gas passage of the intermediate impactor 4 coincides with the axis of the first gas passage 10, and the second gas of the other four impactors 4
- the axis of the passage is parallel to the axis of the first gas passage 10, and the second gas passage communicating with the intermediate portion and the gas separation passage of the plenum 21 are straight-through structures, and the four second gas passages and the plenum chamber 21 are connected to each other.
- the axis of the gas path 22 is a smooth transition curve, that is, a large curvature gas path structure, which can effectively reduce the loss caused by the process of shunting the compressed gas to the surrounding four impactors, and overcome the prior art cluster type down-the-hole hammer direction.
- the compressed air enters the air passage of each impactor through the transverse air passage, and the pressure loss and the low efficiency caused by the near-right angle of the corner of the transverse air passage and the peripheral impactor air passages are transmitted to the periphery.
- the pressure loss of the compressed air in the second gas passage of each impactor is small, thereby improving the construction efficiency of the down-the-hole hammer.
- an air flow adjusting device 26 is disposed on the intermediate air separation path 22, and the air supply parameters (including gas pressure and gas flow rate) of the impactor at the central position can be controlled and adjusted to effectively improve Compressed air utilization efficiency saves energy.
- the coupler 1 further includes a cylindrical connecting body 11 forming a first gas passage, and the drill rod 5 is provided with a mounting hole 51 cooperating with the cylindrical connecting body, the cylindrical connection
- the body 11 and the drill pipe 5 are connected by a pin 13 which is disposed between the two, and a sealing structure 14 is arranged between the cylindrical connecting body 11 and the mounting hole 51, so that the combined DTH hammer and the drill pipe 5 are installed.
- the utility model has the advantages of convenient disassembly and reliable sealing of the gas path, and overcomes the connection in the prior art that the down-the-hole hammer and the drill pipe 5 are connected by a taper threaded joint, and the whole rotary dTH hammer is required for connection, and a large torque tightening is required. It ensures the sealing between the DTH hammer and the drill pipe, and the inconvenience of on-site installation and disassembly.
- the sealing structure 14 is a sealing jaw disposed at the upper end of the cylindrical connecting body 11, and the upper end edge of the cylindrical connecting body 11 is chamfered, so that the air passage sealing effect is better and the cost is relatively slim.
- the pins 13 are at least two.
- the pin shafts 13 are two and are symmetrically disposed on the same horizontal plane.
- the cylindrical connecting body 11 has a regular hexagonal cross section, and accordingly, the mounting hole 51 is an inner hexagonal hole.
- Each side surface of the cylindrical connecting body 11 forms a rotation preventing table surface for preventing the cylindrical connecting body from rotating relative to the drill pipe 5.
- the outer side wall of the cylindrical connecting body 11 is provided with a horizontally extending first recessed hole, and the drill rod 5 is provided with a second recessed hole horizontally extending and intersecting the mounting hole 51, and the pin shaft 13 is installed in the second recessed hole and Through the first recessed hole, the purpose of connecting the cylindrical connecting body 11 with the drill pipe 5 is achieved, and the mounting hole of the pin shaft 13 is facilitated.
- the bracket body 3 includes a cylindrical casing 36 and an upper plate 35 connected to the upper portion of the cylindrical casing 36 and a bottom plate 34 connected to the lower portion of the cylindrical casing 36.
- Positioning holes for mounting the respective impactors 4 are provided on the upper plate 35 and the bottom plate 34.
- the upper end of the impactor 4 (i.e., the upper end of the impactor body 42) has a cylindrical joint 41 having an inner bore forming a portion of the second gas passage, the inner bore being connected to the gas dividing passage 22, and the cylindrical joint 41 Positioning ring groove is provided on the outer circumference, cylindrical joint 41 It is pierced from the positioning hole of the upper plate 35 and positioned by a positioning ring 61 that is sleeved on the positioning ring groove. In order to ensure the airtightness of the air passage, a seal ring 9 is attached to the end of the cylindrical joint 41.
- the upper port of the cylindrical casing 36 is sealingly engaged with the lower end surface of the gas distributing device 2, and a transition plate 31 with a hole is disposed between the lower end surface of the gas distributing device 2 and the upper plate 35, and the positioning ring 61 is located at the transition plate In the hole on the 31, to enhance the structural stability of the combined DTH hammer.
- each impactor 4 and the bottom plate 34 are engaged by a keyway 32 and a connecting key 43.
- a sealed dustproof structure 33 is disposed between the bottom plate 34 and the impactor 4.
- the sealed dustproof structure 33 is, for example, a dust mites in the positioning holes of the bottom plate 34.
- a second preferred embodiment of the present invention is shown, which differs from the first preferred embodiment described above in that the impactor 4 is six, and the second gas passages 40 of the six impactors 4 are The axes of the two are parallel to the first gas passage 10, and the gas passages 22 connecting the gas collection chamber 21 and the second gas passage 40 of each of the impactors are both large curvature gas passage structures.
- each of the air separation passages 22 is connected to the top of the corresponding second gas passage 40 by a contraction-shaped transition air hole 20, respectively.
- the air flow adjusting device 26 is a damping adjusting ring provided in each of the transition air holes 20.
- the damping adjustment ring 26 corresponding to each air separation path 22 can select different specifications of the damping adjustment ring to properly distribute the airflow, effectively utilize the energy, and further improve the punching. effectiveness.
- the impactor 4 includes an impactor body 42 and an impact drill 45.
- the impactor body 42 is mounted to the inside of the bracket body 3, and a piston chamber for mounting the impact piston 410 is provided in the impactor body 42.
- the impact drill 45 is mounted from the lower end into the piston chamber, and the impact drill 45 and the impactor body 42 are axially movable and rotatably rotatably engaged.
- the impact drill 45 of each impactor 4 can also rotate around its own axis while being revolved, so that the cemented carbide head 44 on the impact drill 45 tends to wear. Balanced to increase work efficiency and service life.
- the impact drill 45 includes an associated impact head 451 and a guide shaft 49 to which the cemented carbide head 44 is mounted.
- the upper portion of the guide shaft 49 is provided with a limiting recess 401 extending in the axial direction, and the limiting recess 401 is sleeved with a limiting ring 48.
- the guide shaft 49 is inserted into the piston chamber from the lower end, and the retaining ring 48 is limited by a positioning table disposed on the inner wall of the piston chamber and a guide sleeve 47 mounted to the lower port of the piston chamber, and the guide sleeve 47 is sleeved on the guide shaft 49.
- the limiting ring 48 is a split limiting ring.
- the positioning ring 61 installed in the positioning ring groove 411 of the cylindrical joint 41 is a split positioning ring, and a limiting sleeve 62 is further disposed outside the positioning ring 61, and the limiting sleeve 62 is Top pass The stop 63 and the snap spring 64 are limited.
- a sealing groove 412 is provided on the outer circumference of the cylindrical joint 41, and the sealing groove 412 is located above the positioning ring groove 410 to ensure the sealing of the gas path.
- Step 2 Before the combined down-the-hole hammer 100 is inserted into the cylindrical drill pipe 5 or the auger shaft 5 by means of the two pins 13 and the sealing jaws 14, the output speed according to the drill head 7 and the rig air supply system 8 are obtained.
- the parameter adjusts the adjusting device 26 in the plenum 21 of the combined down-the-hole hammer 100 to a set value, and the airflow is properly distributed to effectively utilize the energy and improve the punching efficiency.
- the combined DTH hammer according to the present invention is matched with the combined DTH hammer by using the auger drill rod. Under the same gas supply condition, the slagging effect is better, the deep hole can be drilled, and the construction efficiency is more High, more economical. It is especially suitable for the high-efficiency construction of large diameter ( ⁇ 500 ⁇ cp800mm and > ⁇ 1000mm) foundation piles in hard formations, especially rock formations.
- the present invention provides a combined down-the-hole hammer with low cost, reasonable structure, easy maintenance, convenient installation and disassembly, reliable sealing, efficient use of energy, and high punching efficiency.
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- 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)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013530541A JP5948333B2 (ja) | 2010-09-30 | 2011-06-23 | 組合せ式ダウンザホールハンマー |
KR1020137011112A KR101746822B1 (ko) | 2010-09-30 | 2011-06-23 | 조합식 다운 홀 해머 |
EP11827980.1A EP2623705B1 (en) | 2010-09-30 | 2011-06-23 | Combined down-the-hole hammer |
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201020550985.2 | 2010-09-30 | ||
CN201020550973.X | 2010-09-30 | ||
CN 201010298875 CN101967955B (zh) | 2010-09-30 | 2010-09-30 | 一种自公转组合式潜孔锤及其施工方法 |
CN 201020550979 CN201786251U (zh) | 2010-09-30 | 2010-09-30 | 一种组合式潜孔锤 |
CN201010298875.6 | 2010-09-30 | ||
CN 201010298838 CN101949261B (zh) | 2010-09-30 | 2010-09-30 | 组合式潜孔锤及其施工方法 |
CN 201020550985 CN201786252U (zh) | 2010-09-30 | 2010-09-30 | 一种自公转组合式潜孔锤 |
CN201020550979.7 | 2010-09-30 | ||
CN 201020550973 CN201786250U (zh) | 2010-09-30 | 2010-09-30 | 组合式潜孔锤 |
CN201010298838.5 | 2010-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012041084A1 true WO2012041084A1 (zh) | 2012-04-05 |
Family
ID=45891886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2011/076226 WO2012041084A1 (zh) | 2010-09-30 | 2011-06-23 | 组合式潜孔锤 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2623705B1 (zh) |
JP (1) | JP5948333B2 (zh) |
KR (1) | KR101746822B1 (zh) |
WO (1) | WO2012041084A1 (zh) |
Cited By (11)
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KR101460435B1 (ko) * | 2013-03-26 | 2014-11-12 | (주)동우기계 | 지반 굴착 장치 |
US20150345222A1 (en) * | 2014-06-02 | 2015-12-03 | King Fahd University Of Petroleum And Minerals | Directional system drilling and method |
CN111270991A (zh) * | 2020-04-13 | 2020-06-12 | 北京中岩大地科技股份有限公司 | 一种变幅式潜孔锤钻机及其施工方法 |
CN111502532A (zh) * | 2020-06-01 | 2020-08-07 | 吉林大学 | 开采干热岩地热能的沉浸式气动潜孔锤钻进装置及方法 |
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CN112196460A (zh) * | 2020-09-08 | 2021-01-08 | 李新形 | 一种地下连续墙潜孔锤成槽机及其使用方法 |
CN112227941A (zh) * | 2020-11-02 | 2021-01-15 | 山东玖翊工程机械有限公司 | 一种可靠性集束式潜孔锤子锤及其固定方法 |
US11174684B2 (en) | 2020-02-26 | 2021-11-16 | Caterpillar Global Mining Equipment Llc | Flushing system in drill bits |
CN113669002A (zh) * | 2021-08-03 | 2021-11-19 | 深圳宏业基岩土科技股份有限公司 | 大直径灌注桩坚硬岩层组合式成孔施工方法 |
CN115788280A (zh) * | 2022-11-18 | 2023-03-14 | 浩洲钻科工程机械(山东)有限公司 | 独立式多通道全孔反循环集束式潜孔 |
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CN103790513B (zh) * | 2014-03-03 | 2016-02-24 | 北京南车时代机车车辆机械有限公司 | 气动潜孔锤排渣装置 |
KR102607022B1 (ko) * | 2021-10-19 | 2023-11-29 | 창신인터내셔날 주식회사 | 에어서플라이 모듈이 조립된 조합해머 |
KR102673470B1 (ko) * | 2022-07-20 | 2024-06-10 | 창신인터내셔날 주식회사 | DTH Hammer의 혼합유체 분리시스템 |
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US11174684B2 (en) | 2020-02-26 | 2021-11-16 | Caterpillar Global Mining Equipment Llc | Flushing system in drill bits |
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Also Published As
Publication number | Publication date |
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JP5948333B2 (ja) | 2016-07-06 |
EP2623705A4 (en) | 2017-04-19 |
KR101746822B1 (ko) | 2017-06-13 |
JP2013538957A (ja) | 2013-10-17 |
EP2623705A1 (en) | 2013-08-07 |
KR20130110175A (ko) | 2013-10-08 |
EP2623705B1 (en) | 2019-10-16 |
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