CN111550188A - Reaming device for reinforcing soft soil foundation - Google Patents
Reaming device for reinforcing soft soil foundation Download PDFInfo
- Publication number
- CN111550188A CN111550188A CN202010288623.9A CN202010288623A CN111550188A CN 111550188 A CN111550188 A CN 111550188A CN 202010288623 A CN202010288623 A CN 202010288623A CN 111550188 A CN111550188 A CN 111550188A
- Authority
- CN
- China
- Prior art keywords
- reaming
- silt
- head
- soft soil
- soil foundation
- 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.)
- Withdrawn
Links
- 239000002689 soil Substances 0.000 title claims abstract description 53
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- 238000011010 flushing procedure Methods 0.000 claims description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 6
- 239000010802 sludge Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract 2
- 230000003628 erosive effect Effects 0.000 abstract 1
- 238000005056 compaction Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000008093 supporting effect Effects 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
-
- 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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
-
- 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
- E21B4/04—Electric drives
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a reaming device for reinforcing a soft soil foundation, belongs to the technical field of building construction equipment, and solves the problems that the reaming operation is difficult, a drill bit needs to be continuously replaced to change the reaming diameter and the operation efficiency is low in the conventional soft soil foundation reinforcing process, and the technical key points are as follows: including washing the silt pipe, rotating sleeve, towards silt head and reaming frame, it is equipped with rotary joint to wash silt socle bottom, the last rotating sleeve that is equipped with of rotating joint, wash the silt intraduct and be fixed with water-proof cover, through adopting washing silt union coupling rotating sleeve and towards the silt head, under servo motor drive, it is rotatory to make towards the silt head, jet orifice blowout rivers on the erosion head, meanwhile, the piston rod is adjusted the reaming radius of the upper slitter blade of the broken soil and the lower slitter blade of broken soil on the reaming frame, the cooperation is broken the common rotation of awl and is carried out the reaming operation, the reaming efficiency has not only been improved, and, also, conveniently adjust the reaming radius, under the regulation in inhaling the silt hole, be convenient for take out the silt that the reaming produced.
Description
Technical Field
The invention relates to the technical field of building construction equipment, in particular to a hole expanding device for reinforcing a soft soil foundation.
Background
The dynamic compaction replacement is one of the methods for reinforcing the saturated soft clay foundation by dynamic compaction. The reinforcing mechanism of the dynamic compaction replacement method is different from that of the dynamic compaction method, and the method utilizes high impact energy generated by the high fall of a heavy hammer to strongly extrude materials with better performances such as broken stones, rubbles, slag and the like into a foundation to form a granular pier in the foundation, and soil between the piers forms a composite foundation so as to improve the bearing capacity of the foundation and reduce settlement. In the dynamic compaction replacement process, the soil body structure is damaged, the foundation soil body generates super pore water pressure, but the soil body structure strength can be recovered along with the increase of time. The aggregate pier generally has better water permeability, and is beneficial to dissipating the pressure of water in the excess pore space in the soil body to generate consolidation.
Chinese patent CN102817347B discloses a reaming device for soft soil foundation reinforcement, which is composed of a silt flushing pipe and a silt sucking pipe, which are arranged in a ring sleeve, wherein the lower ends of the silt flushing pipe and the silt sucking pipe are both closed, the silt flushing pipe is provided with a radial silt flushing hole, the silt sucking pipe is provided with a radial silt sucking hole, and the silt sucking hole is located below the silt flushing hole. The invention has simple structure and easy implementation. However, the reaming device can only perform reaming operation with a determined diameter, namely the reaming diameter of the reaming device cannot be changed, and the reaming diameter cannot be flexibly changed according to reaming requirements. Therefore, it is desirable to provide a hole enlarging device for reinforcing a soft soil foundation, which aims to solve the above problems.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention aims to provide a reaming device for reinforcing a soft soil foundation so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a reaming device for reinforcing a soft soil foundation comprises a silt flushing pipe, a rotary sleeve, a silt flushing head and a reaming frame, wherein the bottom of the silt flushing pipe is provided with the rotary joint, the rotary joint is provided with the rotary sleeve, a water-isolating sleeve is fixed in the silt flushing pipe, a servo motor is installed in the water-isolating sleeve, a motor shaft of the servo motor is connected with a driving shaft through a coupling, the driving shaft penetrates through the rotary sleeve to be connected with the silt flushing head, and the silt flushing head is fixed at the bottom of the rotary sleeve;
the outer welding of towards the silt head has the reaming frame, and the reaming frame comprises cylindric skeleton, a plurality of montants and the ring of welding on the montant on the cylindric skeleton, the welding has the fixed disk on the ring of cylindric skeleton, slides on the montant between the adjacent ring of cylindric skeleton and is provided with the sliding tray, and the broken soil bottom knife is connected through the articulated shaft in the sliding tray outside, and the fixed disk outside of sliding tray top is through articulated shaft connection broken soil top knife, passes through the articulated shaft between broken soil top knife and the broken soil bottom knife.
As a further aspect of the present invention, the rotary sleeve is sleeved on the rotary joint and a sealing ring is disposed between the rotary sleeve and the rotary joint.
As a further scheme of the invention, a plurality of spray holes are arranged on the side surface of the silt flushing head.
As a further scheme of the invention, the interior of the vertical rod is of a hollow structure, the bottom of the vertical rod is provided with a sludge suction hole, and the top of the vertical rod is communicated with a sludge suction pipe.
As a further scheme of the invention, the fixed disc and the sliding disc are both circular rings, and the sliding disc is sleeved on the vertical rod below the fixed disc.
As a further scheme of the invention, the inner side of the sliding disc is connected with a piston rod through a linkage rod, two ends of the linkage rod are hinged with the piston rod and the sliding disc, the piston rod is connected with an electric push rod, and the electric push rod is arranged in an assembly groove at the bottom of the silt flushing head.
As a further scheme of the invention, the erosion-deposition pipe is a stainless steel pipe, the bottom end of a reaming frame outside the erosion-deposition head is connected with a soil breaking cone, and the soil breaking cone is formed by arranging a plurality of soil breaking cutters in a conical shape and welding the tips of the soil breaking cutters.
In summary, compared with the prior art, the embodiment of the invention has the following beneficial effects:
according to the reaming device for reinforcing the soft soil foundation, the rotary sleeve and the erosion-deposition head are connected through the erosion-deposition pipe, the erosion-deposition head is driven by the servo motor to rotate, water flow is sprayed out of the jetting hole in the erosion-deposition head, meanwhile, the piston rod adjusts the reaming radiuses of the upper earth breaking blade and the lower earth breaking blade on the reaming frame and cooperates with the earth breaking cone to rotate together to perform reaming operation, and therefore not only is the reaming efficiency improved, but also the reaming radius is convenient to adjust, and under the adjustment of the erosion-deposition suction hole, sludge generated by reaming is convenient to draw out.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the invention.
FIG. 2 is a schematic view of the upper and lower blades for adjusting the soil breaking on the silt flushing head to perform reaming operation according to the embodiment of the invention.
Reference numerals: 1-erosion-deposition pipe, 2-rotary joint, 3-rotary sleeve, 4-sealing ring, 5-servo motor, 6-water-separating sleeve, 7-driving shaft, 8-erosion-deposition head, 9-jet hole, 10-reaming frame, 11-cylindrical skeleton, 12-fixed disk, 13-upper breaking blade, 14-lower breaking blade, 15-articulated shaft, 16-sliding disk, 17-assembly groove, 18-electric push rod, 19-piston rod, 20-linkage rod, 21-breaking cone, 22-breaking blade, 23-spring, 24-vertical rod, 25-erosion-sucking hole and 26-slurry-sucking pipe.
Detailed Description
The technical solution of the present invention is further described with reference to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1-2, a reaming device for reinforcing a soft soil foundation comprises a silt flushing pipe 1, a rotary sleeve 3, a silt flushing head 8 and a reaming frame 10, wherein the bottom of the silt flushing pipe 1 is provided with the rotary joint 2, the rotary joint 2 is provided with the rotary sleeve 3, the rotary sleeve 3 is sleeved on the rotary joint 2, and a sealing ring 4 is arranged between the rotary joint 2 and the rotary joint 3, so that the rotary sleeve 3 is conveniently communicated with the silt flushing pipe 1, and meanwhile, the sealing performance between the rotary joint 2 and the rotary sleeve 3 is also conveniently ensured;
a water-resisting sleeve 6 is fixed inside the silt flushing pipe 1, the water-resisting sleeve 6 does not influence the connectivity of the silt flushing pipe 1, a servo motor 5 is installed in the water-resisting sleeve 6, a motor shaft of the servo motor 5 is connected with a driving shaft 7 through a coupler, the driving shaft 7 is connected with a silt flushing head 8 through a rotary sleeve 3, the silt flushing head 8 is fixed at the bottom of the rotary sleeve 3, wherein a lead connected with the servo motor 5 penetrates out of the inside of the silt flushing pipe 1 upwards and is connected with a host for controlling the start operation of the servo motor 5; when the servo motor 5 is started, a motor shaft of the servo motor drives the driving shaft 7 to rotate, and the driving shaft 7 drives the rotating sleeve 3 and the silt flushing head 8 to rotate;
the side surface of the silt flushing head 8 is provided with a plurality of jet holes 9, and high-pressure water flow pumped into the silt flushing pipe 1 enters the silt flushing head 8 and then is jetted out along the plurality of jet holes 9 on the side surface of the silt flushing head, so that the reaming operation of a soft soil foundation is facilitated; 8 outer welding of towards silt head has reaming frame 10, and reaming frame 10 comprises cylindric skeleton 11, a plurality of montants 24 and the ring of welding on montant 24 on cylindric skeleton 11, the inside hollow structure that is of montant 24, montant 24 bottom is established to inhale silt hole 25, 24 top intercommunication suction mud pipe 26 of montant, suction mud pipe 26 is behind the switch-on suction equipment, the water that contains the silt that produces when conveniently will ream through the inhale silt hole 25 of montant 24 bottom is taken out.
The fixed disc 12 is welded on the circular ring of the cylindrical framework 11, the fixed disc 12 is circular, a sliding disc 16 is arranged on a vertical rod 24 between adjacent circular rings of the cylindrical framework 11 in a sliding mode, the sliding disc 16 is circular, the sliding disc 16 is sleeved on the vertical rod 24 below the fixed disc 12, the outer side of the sliding disc 16 is connected with the lower soil breaking blade 14 through a hinged shaft 15, the outer side of the fixed disc 12 above the sliding disc 16 is connected with the upper soil breaking blade 13 through the hinged shaft 15, and the upper soil breaking blade 13 and the lower soil breaking blade 14 are connected through the hinged shaft 15;
the inner side of the sliding disc 16 is connected with a piston rod 19 through a linkage rod 20, two ends of the linkage rod 20 are hinged with the piston rod 19 and the sliding disc 16, the piston rod 19 is connected with an electric push rod 18, and the electric push rod 18 is arranged in an assembly groove 17 at the bottom of the silt flushing head 8.
Example 2
A reaming device for reinforcing a soft soil foundation comprises a silt flushing pipe 1, a rotary sleeve 3, a silt flushing head 8 and a reaming frame 10, wherein a rotary joint 2 is arranged at the bottom of the silt flushing pipe 1, the rotary joint 2 is provided with the rotary sleeve 3, the rotary sleeve 3 is sleeved on the rotary joint 2, and a sealing ring 4 is arranged between the rotary joint 2 and the rotary joint 3, so that the rotary sleeve 3 and the silt flushing pipe 1 are conveniently communicated, and meanwhile, the sealing performance between the rotary joint 2 and the rotary sleeve 3 is also conveniently ensured;
the difference from example 1 is:
in the embodiment of the invention, the silt flushing pipe 1 is a stainless steel pipe and is used for connecting the rotary sleeve 3 and the silt flushing head 8, and the silt flushing pipe 1 is a stainless steel pipe, so that the supporting effect can be increased, and the components such as the rotary sleeve 3 and the silt flushing head 8 can be driven to move up and down integrally; the bottom end of a reaming frame 10 outside the erosion-deposition head 8 is connected with a soil breaking cone 21, and the soil breaking cone 21 is arranged in a conical mode through a plurality of soil breaking cutters 22 and the tip ends of the soil breaking cones are welded.
The working principle of the invention is as follows:
when the reaming is used for reinforcing the soft soil foundation, the erosion-deposition pipe 1 is connected with the rotary sleeve 3 and the erosion-deposition head 8, then the erosion-deposition head 8 is driven to rotate under the condition of starting the servo motor 5, the outer reaming frame 10 of the erosion-deposition head 8 and the soil breaking cone 21 at the top end of the reaming frame 10 are used for rotary drilling, the erosion-deposition pipe 1 is matched with water flow sprayed out for reaming, when the reaming radius needs to be changed, the electric push rod 18 is started to work, the piston rod 19 drives the sliding disc 16 to move along the vertical rod 24 of the cylindrical framework 11, the upper soil breaking blade 13, the lower soil breaking blade 14 and the vertical rod 24 form an outward triangular structure, meanwhile, the radius formed by the connecting points of the upper soil breaking blade 13 and the lower soil breaking blade 14 is increased, the reaming radius is increased during rotation, and the radius of reaming operation is convenient.
The technical principle of the present invention has been described above with reference to specific embodiments, which are merely preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. Other embodiments of the invention will occur to those skilled in the art without the exercise of inventive faculty, and such will fall within the scope of the invention.
Claims (7)
1. A reaming device for reinforcing a soft soil foundation comprises a silt flushing pipe (1), a rotary sleeve (3), a silt flushing head (8) and a reaming frame (10), and is characterized in that the bottom of the silt flushing pipe (1) is provided with a rotary joint (2), the rotary joint (2) is provided with the rotary sleeve (3), a water separating sleeve (6) is fixed inside the silt flushing pipe (1), a servo motor (5) is installed in the water separating sleeve (6), a motor shaft of the servo motor (5) is connected with a driving shaft (7) through a shaft coupling, the driving shaft (7) penetrates through the rotary sleeve (3) to be connected with the silt flushing head (8), and the silt flushing head (8) is fixed at the bottom of the rotary sleeve (3);
towards the outside welding of silt head (8) and have reaming frame (10), reaming frame (10) comprises cylindric skeleton (11), and a plurality of montants (24) and the ring of welding on montant (24) are gone up in cylindric skeleton (11), the welding has fixed disk (12) on the ring of cylindric skeleton (11), and it is provided with sliding disc (16) to slide on montant (24) between the adjacent ring of cylindric skeleton (11), and the broken soil bottom knife piece (14) is connected through articulated shaft (15) in the sliding disc (16) outside, and fixed disk (12) outside of sliding disc (16) top is connected broken soil through articulated shaft (15) and is gone up blade (13), goes up blade (13) and broken soil between bottom knife piece (14) through articulated shaft (15).
2. A reaming device for soft soil foundation reinforcement according to claim 1, characterized in that the rotary sleeve (3) is sleeved on the rotary joint (2) and a sealing ring (4) is arranged between the rotary joint and the rotary joint.
3. A reaming device for soft soil foundation reinforcement according to claim 2, characterized in that the side of the flushing head (8) is provided with a plurality of injection holes (9).
4. A reaming device for soft soil foundation reinforcement according to claim 1, characterized in that the inside of the vertical rod (24) is hollow, the bottom of the vertical rod (24) is provided with a sludge suction hole (25), and the top of the vertical rod (24) is communicated with a sludge suction pipe (26).
5. A reaming device for soft soil foundation reinforcement according to claim 4, characterized in that the fixed disk (12) and the sliding disk (16) are both circular rings, and the sliding disk (16) is sleeved on the vertical rod (24) below the fixed disk (12).
6. A reaming device for reinforcing a soft soil foundation according to claim 5, wherein the inner side of the sliding disc (16) is connected with a piston rod (19) through a linkage rod (20), both ends of the linkage rod (20) are hinged with the piston rod (19) and the sliding disc (16), the piston rod (19) is connected with an electric push rod (18), and the electric push rod (18) is installed in an assembling groove (17) at the bottom of the silt flushing head (8).
7. A reaming device for soft soil foundation reinforcement according to any of claims 1-6, characterized in that the erosion-deposition pipe (1) is a stainless steel pipe, the bottom end of the reaming frame (10) outside the erosion-deposition head (8) is connected with a breaking cone (21), and the breaking cone (21) is arranged in a conical manner by a plurality of breaking knives (22) and the tips of the breaking cones are welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010288623.9A CN111550188A (en) | 2020-04-14 | 2020-04-14 | Reaming device for reinforcing soft soil foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010288623.9A CN111550188A (en) | 2020-04-14 | 2020-04-14 | Reaming device for reinforcing soft soil foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111550188A true CN111550188A (en) | 2020-08-18 |
Family
ID=72005748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010288623.9A Withdrawn CN111550188A (en) | 2020-04-14 | 2020-04-14 | Reaming device for reinforcing soft soil foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111550188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562209A (en) * | 2022-02-25 | 2022-05-31 | 青岛市勘察测绘研究院 | Edge reinforcement formula reaming device for geotechnical engineering |
-
2020
- 2020-04-14 CN CN202010288623.9A patent/CN111550188A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562209A (en) * | 2022-02-25 | 2022-05-31 | 青岛市勘察测绘研究院 | Edge reinforcement formula reaming device for geotechnical engineering |
| CN114562209B (en) * | 2022-02-25 | 2023-05-23 | 青岛市勘察测绘研究院 | Edge reinforcement type reaming device for geotechnical engineering |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109882073A (en) | The double high-pressure stirring-spraying piles of reducing and its variable diameter method | |
| CN106337657B (en) | A kind of deformable rotary drilling-head | |
| CN206267815U (en) | Drilling type continuous sand flushing device | |
| CN111706252B (en) | Top plate high-position directional drilling gas extraction device based on reducing and reaming | |
| CN103291222A (en) | Reamer bit for building long-screw pile machine | |
| CN107916937A (en) | Drilling tool, drilling machine and drilling method | |
| CN111550188A (en) | Reaming device for reinforcing soft soil foundation | |
| WO2020238206A1 (en) | Multi-impeller passive rotary stirring type open caisson rotary drill bit | |
| CN115853533A (en) | Pipe jacking machine for hydraulic engineering and using method thereof | |
| CN209724227U (en) | The double high-pressure stirring-spraying piles of reducing | |
| CN209011744U (en) | A kind of down-hole hammer equipment and its impact guidance system | |
| WO2010070190A1 (en) | Method and apparatus for down-the-hole drilling | |
| CN116464052A (en) | Hole cleaning device for bored pile and construction method | |
| CN107217985B (en) | Sector type hollow drilling device | |
| US20230193694A1 (en) | Percussion and Cutting Composite Drilling Tool | |
| CN216973547U (en) | Powerful crushing reamer | |
| CN102425370B (en) | Hole bottom oil pressure motor lithoclast combined power drilling tool construction method and device | |
| CN113153160B (en) | Roller bit drill rod for roller bit rig | |
| CN110344752B (en) | Double-wall screw drilling system based on gas-liquid two-phase driving | |
| CN210660033U (en) | Drill rod washover tool | |
| CN111980580A (en) | Cyclone anti-floating anchor rod machine | |
| CN101942968A (en) | Drill bit for reducing pressure and raising speed | |
| CN102251518A (en) | Rotary pump perforating piling machine | |
| CN221119960U (en) | Sinking well heading machine | |
| KR102559520B1 (en) | Core barrel hammer system with improved slime discharge and core cutting function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200818 |
|
| WW01 | Invention patent application withdrawn after publication |