CN112377092A - Hydraulic down-the-hole hammer - Google Patents
Hydraulic down-the-hole hammer Download PDFInfo
- Publication number
- CN112377092A CN112377092A CN202011288242.7A CN202011288242A CN112377092A CN 112377092 A CN112377092 A CN 112377092A CN 202011288242 A CN202011288242 A CN 202011288242A CN 112377092 A CN112377092 A CN 112377092A
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- China
- Prior art keywords
- hole
- hydraulic
- pipe
- barrel
- drill bit
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- 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.)
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- 239000010720 hydraulic oil Substances 0.000 claims abstract description 24
- 239000002002 slurry Substances 0.000 claims description 23
- 239000004568 cement Substances 0.000 claims description 14
- 239000003921 oil Substances 0.000 claims description 11
- 238000005553 drilling Methods 0.000 abstract description 14
- 238000010276 construction Methods 0.000 abstract description 12
- 238000005507 spraying Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 8
- 239000002245 particle Substances 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 4
- 239000011440 grout Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction 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
- 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 invention discloses a hydraulic down-the-hole impactor which comprises a cylinder, a hydraulic oil inlet pipe, a hydraulic oil return pipe, a hydraulic cylinder, a piston rod and a fixing block, wherein the cylinder is of a hollow cylindrical structure, the fixing block in threaded connection with the cylinder is arranged in the cylinder, the top of the fixing block is fixedly connected with the hydraulic cylinder, the piston in sliding connection with the hydraulic cylinder is arranged in the hydraulic cylinder, the piston and the bottom of the piston are fixedly connected with the piston rod, the upper end of the hydraulic cylinder is communicated with the hydraulic oil inlet pipe, and the lower end of the hydraulic cylinder. The invention has the advantages that: the hydraulic down-the-hole hammer can realize rotation and impact at the same time, has high drilling efficiency, can carry out drilling and spraying integrated construction on a high-resistance stratum and a stratum containing large-particle boulders by a high-spraying method, reduces the hole leading procedures, and enables the drilling and spraying integrated high-spraying construction process to be suitable for various complex high-resistance stratums.
Description
Technical Field
The invention relates to the technical field of high-pressure spray grouting construction equipment, in particular to a hydraulic down-the-hole impactor.
Background
The high spray grouting process has the advantages of wide stratum application range, low manufacturing cost, mature process and the like, and has wide application prospect in dams with complicated geological conditions and severe construction environments. The high-pressure spray grouting process is characterized in that a drill bit with a high-pressure nozzle is rotated and is drilled into the ground under the action of downward pressing force, cement grout is sprayed out from the nozzle on the drill bit through a grout pipe by using a high-pressure slurry pump after a drill rod reaches a preset depth, the sprayed cement grout and original stratum materials are mixed to form a high-pressure spray pile body, and a plurality of pile bodies are connected into a piece to form an impervious wall. In order to make the drilling and spraying integrated high-spraying process construction applicable area wider, the drilling and spraying integrated construction can be carried out on a high-resistance stratum and a stratum containing large boulders, the inventor of the application improves the equipment, and an impact device is installed at the top of a square drill rod at first, but the impact effect is not obvious through practice for many times, and the main reason is that: the drill rod is too long, the impact force transmitted to the bottom of the drill bit is greatly reduced, and when the impact device impacts the square drill rod, the mechanism for driving the drill rod to rotate is vulnerable after the impact force is applied, so that the safety is poor. The hydraulic down-the-hole hammer is arranged in the lower cavity of the drill rod, the hammer head directly strikes the drill bit, the attenuation of impact power is basically avoided, the efficient drilling is realized, and the drilling and spraying integrated high-spraying construction can be realized even in a high-resistance drift particle stratum.
Disclosure of Invention
The invention aims to provide a hydraulic down-the-hole impacter which can realize impact while rotating, directly hit a drill bit by an impact hammer, has high drilling efficiency, realizes the drilling and spraying integrated high-spraying process, can be constructed in a stratum containing coarse-particle cobble stones and solves the problems in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a hydraulic down-the-hole impacter, includes barrel, hydraulic pressure oil feed pipe, hydraulic pressure oil return pipe, pneumatic cylinder, piston rod and fixed block, and the barrel is hollow cylindrical structure, is equipped with the fixed block with barrel threaded connection in the barrel, fixed block top and pneumatic cylinder fixed connection, be equipped with in the pneumatic cylinder with pneumatic cylinder sliding connection's piston, piston and bottom and piston rod fixed connection, pneumatic cylinder upper end and hydraulic pressure oil feed pipe intercommunication, pneumatic cylinder lower extreme and hydraulic pressure oil return pipe intercommunication.
Further, the barrel includes connecting thread, first fixed thread, first mud pipe through-hole, first round pin groove, annular protrusion and first air pipe through-hole, the barrel both ends are equipped with the blind hole respectively, and barrel upper end blind hole outer end is equipped with connecting thread, and first round pin groove has been seted up to barrel lower extreme blind hole outer end, and barrel lower extreme blind hole bottom is equipped with first fixed thread, and barrel upper end blind hole bottom and lower extreme blind hole bottom separate through annular protrusion, and annular protrusion and the fixed integral type of barrel are connected, and annular protrusion axial evenly is equipped with first mud pipe through-hole and first air pipe through-hole.
Further, the fixed block is cylindricly, and the fixed block axial evenly is equipped with second mud pipe through-hole and second air pipe through-hole, fixed block circumference is equipped with the fixed screw of second.
Furthermore, the drill bit further comprises a drill bit and a limiting pin key, wherein second pin grooves are formed in two sides of the top end of the drill bit, the top of the drill bit stretches into the blind hole in the lower end of the cylinder and is fixedly connected with the lower end of the piston rod, the top of the drill bit is connected with the blind hole in the lower end of the cylinder in a sliding mode, the limiting pin key is installed in the gap between the first pin groove and the second pin groove, and the drill bit is circumferentially limited and fixed through the limiting pin key and the.
The lower end of the cement slurry guide pipe sequentially penetrates through the first slurry pipe through hole, the second slurry pipe through hole and a cement slurry nozzle of the drill bit to be communicated; the lower end of the air conduit penetrates through the first air pipe through hole, the second air pipe through hole and the high-pressure air nozzle of the drill bit in sequence to be communicated.
Furthermore, the other ends of the hydraulic oil inlet pipe and the hydraulic oil return pipe are respectively connected with an external hydraulic oil pump. The device can adopt a hydraulic oil circuit in differential connection to realize the reciprocating motion of the oil circuit of the device and realize the impact function.
Furthermore, the other end of the cement slurry conduit is connected with an external high-pressure mud pump, and the other end of the air conduit is connected with an external high-pressure air pump.
Compared with the prior art, the invention has the following beneficial effects: the hydraulic down-the-hole hammer is arranged in a cavity at the lower part of a square drill rod, a drill bit is arranged at the lower end of the hydraulic down-the-hole hammer, and when high-pressure jet drilling construction is carried out, an external driving structure drives the square drill rod and the hydraulic down-the-hole hammer to rotate together and apply downward pressure; the hydraulic oil pump is started, the hydraulic down-the-hole hammer realizes the up-and-down reciprocating motion of the piston rod under the matching action of the hydraulic oil inlet pipe, the hydraulic oil return pipe, the hydraulic cylinder, the piston and the piston rod, the lower end of the piston rod is connected with the top of the drill bit, and then the drill bit is rotated and impacted at the same time, the drilling efficiency is high, the drill bit is directly knocked by the hammer head of the hydraulic down-the-hole hammer, the drilling construction can be carried out on a high-resistance stratum and a stratum containing coarse-particle boulders, the hole leading procedure in the traditional process is omitted, the drilling and spraying integrated process can adapt to various different geological conditions, the manpower, material and.
Drawings
FIG. 1 is a schematic structural diagram 1 of the present invention;
FIG. 2 is a schematic structural diagram of the present invention 2;
FIG. 3 is a schematic view of the mounting structure of the present invention;
FIG. 4 is a top view of the hydraulic cylinder and mounting block assembly of the present invention;
FIG. 5 is a front view of the hydraulic cylinder and fixed block assembly of the present invention;
FIG. 6 is a cross-sectional view of the cartridge construction of the present invention;
FIG. 7 is a top view of the cartridge structure of the present invention;
in the figure: 1. a barrel; 1-1, connecting threads; 1-2, a first fixed thread; 1-3, a first slurry pipe through hole; 1-4, a first pin slot; 1-5, annular protrusion; 1-6, a first air pipe through hole; 2. a hydraulic oil inlet pipe; 3. a hydraulic return pipe; 4. a hydraulic cylinder; 5. a piston; 6. a piston rod; 7. a fixed block; 7-1, a second slurry pipe through hole; 7-2, a second air pipe through hole; 7-3, a second fixing thread; 8. a cement slurry conduit; 9. an air conduit; 10. a second pin slot; 11. a drill bit; 12. and a limit pin key.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1-7, a hydraulic down-the-hole hammer comprises a cylinder 1, a hydraulic oil inlet pipe 2, a hydraulic oil return pipe 3, a hydraulic cylinder 4, a piston 5, a piston rod 6 and a fixing block 7, wherein the cylinder 1 is of a hollow cylindrical structure, the fixing block 7 in threaded connection with the cylinder 1 is arranged in the cylinder 1, the top of the fixing block 7 is fixedly connected with the hydraulic cylinder 4, the piston 5 in sliding connection with the hydraulic cylinder 4 is arranged in the hydraulic cylinder 4, the piston 5 is fixedly connected with the piston rod 6, the upper end of the hydraulic cylinder 4 is communicated with the hydraulic oil inlet pipe 2, and the lower end of the hydraulic cylinder 4 is communicated with the.
The barrel body 1 comprises connecting threads 1-1, first fixing threads 1-2, first slurry pipe through holes 1-3, first pin grooves 1-4, annular protrusions 1-5 and first air pipe through holes 1-6, blind holes are formed in two ends of the barrel body 1 respectively, the connecting threads 1-1 are arranged at the outer ends of the blind holes in the upper end of the barrel body 1, the first pin grooves 1-4 are formed in the outer ends of the blind holes in the lower end of the barrel body 1, the first fixing threads 1-2 are arranged at the bottom end of the blind holes in the lower end of the barrel body 1, the bottom of the blind holes in the upper end and the bottom of the blind holes in the lower end of the barrel body 1 are separated through the annular protrusions 1-5, the annular protrusions 1-5 are fixedly and integrally connected with the barrel body 1, and the annular protrusions 1-5 are axially and uniformly provided with.
The fixing block 7 is cylindrical, second slurry pipe through holes 7-1 and second air pipe through holes 7-2 are uniformly formed in the fixing block 7 in the axial direction, and second fixing threads 7-3 are circumferentially formed in the fixing block 7.
The drill bit comprises a drill bit 11 and a limit pin key 12, wherein second pin grooves 10 are formed in two sides of the top end of the drill bit 11, the top of the drill bit 11 extends into a blind hole in the lower end of the cylinder body 1 and is fixedly connected with the lower end of the piston rod 6, the top of the drill bit 11 is slidably connected with the blind hole in the lower end of the cylinder body 1, the limit pin key 12 is installed in a gap between the first pin groove 1-4 and the second pin groove 10, and the drill bit 11 is circumferentially limited and fixed with the cylinder body 1 through the limit pin key 12.
The drilling fluid further comprises a cement slurry guide pipe 8 and an air guide pipe 9, wherein the lower end of the cement slurry guide pipe 8 sequentially penetrates through the first slurry pipe through hole 1-3, the second slurry pipe through hole 7-1 and a cement slurry nozzle of the drill bit 11 to be communicated; the lower end of the air conduit 9 sequentially penetrates through the first air pipe through hole 1-6, the second air pipe through hole 7-2 and a high-pressure air nozzle of the drill bit 11 to be communicated.
And the other ends of the hydraulic oil inlet pipe 2 and the hydraulic oil return pipe 3 are respectively connected with an external hydraulic oil pump. The device can adopt a hydraulic oil circuit in differential connection to realize the reciprocating motion of the oil circuit of the device and realize the impact function.
The other end of the cement slurry conduit 8 is connected with an external high-pressure mud pump, and the other end of the air conduit 9 is connected with an external high-pressure air pump.
When the hydraulic down-the-hole impactor is used, firstly, the hydraulic down-the-hole impactor is fixedly connected with a square drill rod through a top connecting thread 1-1 of the hydraulic down-the-hole impactor, the square drill rod is of a hollow structure, a hydraulic oil inlet pipe 2, a hydraulic oil return pipe 3, a cement slurry guide pipe 8 and an air guide pipe 9 respectively penetrate through the square drill rod and extend to the outside of the square drill rod, and when hole leading construction is carried out, an external driving structure drives the square drill rod and the hydraulic down-the-hole impactor to rotate and apply downward pressure; start hydraulic oil pump, this hydraulic pressure down-the-hole impacter is at hydraulic pressure inlet pipe 2, hydraulic pressure returns oil pipe 3, pneumatic cylinder 4, realize piston rod 6's upper and lower reciprocating motion under the mating reaction of piston 5 and piston rod 6, 6 lower extremes of piston rod and 11 top fixed connection of drill bit, and then realize that 11 rotatory impacts on the one side of drill bit, the pilot hole is effectual, this hydraulic pressure down-the-hole impacter theory of operation is similar to the theory of operation of percussion drill, can be under construction the bottom of hard geology and the geology that contains the large granule cobble, very big reduction the pilot hole to the requirement of geology, make the high-pressure jetting method adaptation face wider.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a hydraulic down-the-hole impacter, includes that barrel, hydraulic pressure advance oil pipe, hydraulic pressure return oil pipe, pneumatic cylinder, piston rod and fixed block, its characterized in that: the barrel is hollow cylindrical structure, is equipped with in the barrel with barrel threaded connection's fixed block, fixed block top and pneumatic cylinder fixed connection, be equipped with in the pneumatic cylinder with pneumatic cylinder sliding connection's piston, piston and piston rod fixed connection, pneumatic cylinder upper end and hydraulic pressure advance oil pipe intercommunication, the pneumatic cylinder lower extreme and hydraulic pressure return oil pipe intercommunication.
2. A hydraulic down-the-hole impactor according to claim 1, wherein: the barrel includes connecting thread, first fixed screw thread, first mud pipe through-hole, first round pin groove, annular protrusion and first air pipe through-hole, the barrel both ends are equipped with the blind hole respectively, and barrel upper end blind hole outer end is equipped with connecting thread, and first round pin groove has been seted up to barrel lower extreme blind hole outer end, and barrel lower extreme blind hole bottom is equipped with first fixed screw thread, and barrel upper end blind hole bottom and lower extreme blind hole bottom separate through annular protrusion, and annular protrusion and the fixed integral type of barrel are connected, and annular protrusion axial evenly is equipped with first mud pipe through-hole and first air pipe through-hole.
3. A hydraulic down-the-hole impactor according to claim 1, wherein: the fixed block is cylindric, and the fixed block axial evenly is equipped with second mud pipe through-hole and second air pipe through-hole, fixed block circumference is equipped with the fixed screw of second.
4. A hydraulic down-the-hole impactor according to claim 1, wherein: the drill bit is characterized by further comprising a drill bit and a limiting pin key, wherein second pin grooves are formed in two sides of the top end of the drill bit, the top of the drill bit stretches into the blind hole at the lower end of the cylinder and is fixedly connected with the lower end of the piston rod, the top of the drill bit is slidably connected with the blind hole at the lower end of the cylinder, the limiting pin key is arranged in a gap between the first pin groove and the second pin groove, and the drill bit is circumferentially and fixedly limited through the limiting pin key.
5. A hydraulic down-the-hole impactor according to claim 1, wherein: the lower end of the cement slurry guide pipe sequentially penetrates through the first slurry pipe through hole, the second slurry pipe through hole and a cement slurry nozzle of the drill bit to be communicated; the lower end of the air conduit penetrates through the first air pipe through hole, the second air pipe through hole and the high-pressure air nozzle of the drill bit in sequence to be communicated.
6. A hydraulic down-the-hole impactor according to claim 1, wherein: and the other ends of the hydraulic oil inlet pipe and the hydraulic oil return pipe are respectively connected with an external hydraulic oil pump.
7. A hydraulic down-the-hole impactor according to claim 5, wherein: the other end of the cement slurry conduit is connected with an external high-pressure mud pump, and the other end of the air conduit is connected with an external high-pressure air pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011288242.7A CN112377092A (en) | 2020-11-17 | 2020-11-17 | Hydraulic down-the-hole hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011288242.7A CN112377092A (en) | 2020-11-17 | 2020-11-17 | Hydraulic down-the-hole hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112377092A true CN112377092A (en) | 2021-02-19 |
Family
ID=74584955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011288242.7A Pending CN112377092A (en) | 2020-11-17 | 2020-11-17 | Hydraulic down-the-hole hammer |
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| Country | Link |
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| CN (1) | CN112377092A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094577A (en) * | 2010-12-09 | 2011-06-15 | 刘国经 | Core valve jet-suction hydraulic down-the-hole (DTH) hammer |
| CN102317565A (en) * | 2009-02-11 | 2012-01-11 | 阿特拉斯·科普柯(美国)塞科洛克有限公司 | Down-the-hole hammer with high-order discharger |
| CN102418344A (en) * | 2011-06-17 | 2012-04-18 | 北京荣创科宏岩土工程有限公司 | Injector, drill bit combination structure and combination drilling tool |
| CN105569563A (en) * | 2015-12-31 | 2016-05-11 | 长安大学 | Rotary drilling rig bit capable of impact drilling |
| CN106246099A (en) * | 2016-10-13 | 2016-12-21 | 刘守进 | Spiral soil compaction down-the-hole embedding rock device and pile making method |
| CN106284295A (en) * | 2016-08-17 | 2017-01-04 | 中冶建筑研究总院（深圳）有限公司 | Multichannel high-pressure vibro-grouting jet groutinl construction method |
| CN111691819A (en) * | 2020-07-10 | 2020-09-22 | 中煤特殊凿井有限责任公司 | Percussion drill suitable for rotary drilling machine |
-
2020
- 2020-11-17 CN CN202011288242.7A patent/CN112377092A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317565A (en) * | 2009-02-11 | 2012-01-11 | 阿特拉斯·科普柯(美国)塞科洛克有限公司 | Down-the-hole hammer with high-order discharger |
| CN102094577A (en) * | 2010-12-09 | 2011-06-15 | 刘国经 | Core valve jet-suction hydraulic down-the-hole (DTH) hammer |
| CN102418344A (en) * | 2011-06-17 | 2012-04-18 | 北京荣创科宏岩土工程有限公司 | Injector, drill bit combination structure and combination drilling tool |
| CN105569563A (en) * | 2015-12-31 | 2016-05-11 | 长安大学 | Rotary drilling rig bit capable of impact drilling |
| CN106284295A (en) * | 2016-08-17 | 2017-01-04 | 中冶建筑研究总院（深圳）有限公司 | Multichannel high-pressure vibro-grouting jet groutinl construction method |
| CN106246099A (en) * | 2016-10-13 | 2016-12-21 | 刘守进 | Spiral soil compaction down-the-hole embedding rock device and pile making method |
| CN111691819A (en) * | 2020-07-10 | 2020-09-22 | 中煤特殊凿井有限责任公司 | Percussion drill suitable for rotary drilling machine |
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| PB01 | Publication | ||
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Application publication date: 20210219 |