CN110630199A - Core-pulling mechanism - Google Patents
Core-pulling mechanism Download PDFInfo
- Publication number
- CN110630199A CN110630199A CN201910660912.4A CN201910660912A CN110630199A CN 110630199 A CN110630199 A CN 110630199A CN 201910660912 A CN201910660912 A CN 201910660912A CN 110630199 A CN110630199 A CN 110630199A
- Authority
- CN
- China
- Prior art keywords
- drilling tool
- core
- assembly
- inner assembly
- outlet channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 238000005553 drilling Methods 0.000 claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 239000011435 rock Substances 0.000 abstract description 20
- 239000000843 powder Substances 0.000 abstract description 4
- 239000004576 sand Substances 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005527 soil sampling Methods 0.000 description 1
- 239000011800 void material Substances 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
The invention discloses a core taking mechanism which comprises a drilling tool inner assembly and a drilling tool outer assembly, wherein the drilling tool outer assembly is sleeved outside the drilling tool inner assembly, the drilling tool outer assembly is rotatably connected with the drilling tool inner assembly, a drill bit is arranged at the tail end of the drilling tool inner assembly, a gap is formed between the drilling tool outer assembly and the drilling tool inner assembly, the drilling tool outer assembly is provided with a water inlet, the water inlet is communicated with the gap, the drilling tool inner assembly is provided with a cavity for containing a core, the drilling tool inner assembly is provided with an inner water outlet channel, the drilling tool outer assembly is provided with an outer water outlet channel, and the inner water outlet channel, the outer water outlet channel and the cavity are communicated. The sand and rock powder blocked in the drilling tool inner assembly is washed out by water pressure, so that the rock core can be smoothly taken out from the drilling tool inner assembly, the artificial rock core damage caused by the hammer knocking of workers at an orifice is avoided, and the whole rock core is protected.
Description
Technical Field
The invention relates to the field of soil sampling equipment, in particular to a core-pulling mechanism.
Background
In the building engineering detection, a drilling method is often adopted to detect the pile body concrete of the large-diameter cast-in-situ bored pile. However, the concrete core is not easy to pour out in the core-pulling drilling tool, and if the core barrel is knocked by a hammer, the concrete core in the core barrel is knocked, broken or shattered, so that objective evaluation of a technical worker on a pile body is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a core-taking mechanism which can protect the whole core.
The technical scheme adopted by the invention for solving the technical problem is that,
according to a first aspect of the invention, a core taking mechanism is provided, which comprises a drilling tool inner assembly and a drilling tool outer assembly, wherein the drilling tool outer assembly is sleeved outside the drilling tool inner assembly, the drilling tool outer assembly is rotatably connected with the drilling tool inner assembly, a drill bit is arranged at the tail end of the drilling tool inner assembly, a gap is arranged between the drilling tool outer assembly and the drilling tool inner assembly, the drilling tool outer assembly is provided with a water inlet, the water inlet is communicated with the gap, the drilling tool inner assembly is provided with a cavity for accommodating a core, the drilling tool inner assembly is provided with an inner water outlet channel, the drilling tool outer assembly is provided with an outer water outlet channel, and the inner water outlet channel, the outer water outlet channel and the cavity are communicated.
The invention has the advantages that the sand and rock powder blocked in the drilling tool inner assembly is washed out by water pressure, so that the rock core can be smoothly taken out from the drilling tool inner assembly, the artificial rock core damage caused by the hammer knocking of workers at an orifice is avoided, and the whole rock core is protected.
According to the core taking mechanism of the first aspect of the invention, the drilling tool inner assembly comprises a core barrel, a core barrel joint and a drilling tool core, the drilling tool outer assembly comprises an outer pipe and an outer pipe joint, the outer pipe joint is fixedly connected with the outer pipe, the core barrel joint is fixedly connected with the core barrel, the gap is arranged between the outer pipe and the core barrel, the core barrel joint is connected with the outer pipe joint through the drilling tool core, one end of the drilling tool core is fixed on the outer pipe joint, and the other end of the drilling tool core is rotatably connected with the core barrel joint. The outer pipe joint drives the outer pipe to rotate, the drill bit is driven to drill holes in the ground bottom and cut rocks annularly, the rock core pipe is kept still due to the action of friction force, and the rock is continuously sleeved in a cavity in the rock core pipe to form a columnar rock core.
According to a core-pulling mechanism of a first aspect of the present invention, a rotary bearing is provided between the drill core and the core barrel. The drill core rotates in the core barrel through the rotary bearing.
According to a first aspect of the present invention, the inner water outlet channel is arranged in the drill core. Water enters from the lower end of the cavity and flows upwards to flow out of the core taking mechanism along the inner water outlet channel.
According to the core-taking mechanism in the first aspect of the invention, the cavity is arranged in the core barrel, and one end of the cavity, which is close to the core barrel joint, is provided with a concave spherical surface. The smooth transition spherical surface is convenient for rock debris to be separated.
According to a first aspect of the present invention, the drill core is fixed to the outer pipe joint by a screw.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic view of the mounting structure of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, the core taking mechanism according to the embodiment of the present invention includes a drilling tool inner assembly 20 and a drilling tool outer assembly 10, the drilling tool outer assembly 10 is sleeved outside the drilling tool inner assembly 20, the drilling tool outer assembly 10 is rotatably connected to the drilling tool inner assembly 20, a drill bit is disposed at a tail end of the drilling tool inner assembly 20, a gap 13 is disposed between the drilling tool outer assembly 10 and the drilling tool inner assembly 20, the drilling tool outer assembly 10 is provided with a water inlet 15, the water inlet 15 is communicated to the gap 13, the drilling tool inner assembly 20 is provided with a cavity 24 for accommodating a core, the drilling tool inner assembly 20 is provided with an inner water outlet channel 25, the drilling tool outer assembly 10 is provided with an outer water outlet channel 14, and the inner water outlet channel 25, the outer water outlet channel 14 and the cavity 24 are communicated.
When the core taking device is used, water is injected into the water inlet 15, the water reaches the lower ends of the inner assembly 20 and the outer assembly 10 of the drilling tool along the gap 13, the water flows in the cavity 24 along with the increase of the injected water amount and flows out of the core taking mechanism along the cavity 24, the inner water outlet channel 25 and the outer water outlet channel 14, and in the water flowing process, sandstone powder clamped in the inner assembly 20 of the drilling tool is washed out, so that a core can be smoothly taken out of the inner assembly 20 of the drilling tool, artificial core damage caused by hammering of workers at orifices is avoided, and the whole core is protected.
Wherein, in some embodiments, assembly 20 includes core barrel 22, core barrel coupling 21 and drilling tool core 23 in the drilling tool, assembly 10 includes outer tube 12 and outer tube coupling 11 outside the drilling tool, outer tube coupling 11 with outer tube 12 rigid coupling, core barrel coupling 21 with core barrel 22 rigid coupling, outer tube 12 with be provided with between the core barrel 22 space 13, core barrel coupling 21 with pass through between the outer tube coupling 11 the drilling tool core 23 is connected, the one end of drilling tool core 23 is fixed on outer tube coupling 11, and the other end rotates to be connected on core barrel coupling 21, preferably, drilling tool core 23 passes through the thread tightening on outer tube coupling 11. When the device is used, the external driving mechanism is used for driving the outer pipe joint 11 to drive the outer pipe 12 to rotate, so that the drill bit is driven to drill holes in the ground bottom and cut rocks in an annular mode, the rock core pipe 22 is kept still due to the action of friction force, and the rock is continuously sleeved into the cavity 24 in the rock core pipe 22 to form a complete cylindrical rock core.
In this embodiment, the entire coring mechanism is first placed in concrete and the outer pipe joint 11 is rotated, preferably with a rotary bearing 30 disposed between the drill core 23 and the core barrel 22. The drill core 23 rotates in the core barrel 22 via a rotary bearing 30. Thus, the drill bit at the lower part of the outer pipe 12 drills the concrete without the core barrel 22 rotating and forms a core in the core barrel 22, and during drilling, the water inlet 15 is filled with water, preferably both the water inlet 15 and the outer waterway 14 are provided at the outer pipe joint 11. Water flows into the void 13 in the directions a1 and a2 and exits the coring mechanism along the paths B1 and B2 to flush out the sandstone powder trapped in the drill inner assembly 20.
In addition, some of the water injected from the water inlet 15 will flow back out along the direction B3 and flush the debris at the drill bit, preventing blockage.
In some embodiments, the inner water outlet channel 25 is disposed within the drill core 23. Water enters from the lower end of the cavity 24 and flows upwardly out of the core-picking mechanism along the inner water outlet channel 25.
In some embodiments, the cavity 24 is disposed in the core barrel 22, and one end of the cavity 24 near the core barrel joint 21 is provided with a concave spherical surface. The smooth transition spherical surface is convenient for rock debris to be separated.
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 details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The core taking mechanism is characterized by comprising a drilling tool inner assembly and a drilling tool outer assembly, wherein the drilling tool outer assembly is sleeved outside the drilling tool inner assembly, the drilling tool outer assembly is rotatably connected with the drilling tool inner assembly, a drill bit is arranged at the tail end of the drilling tool inner assembly, a gap is formed between the drilling tool outer assembly and the drilling tool inner assembly, a water inlet is formed in the drilling tool outer assembly and communicated with the gap, a cavity for containing a core is formed in the drilling tool inner assembly, an inner water outlet channel is formed in the drilling tool inner assembly, an outer water outlet channel is formed in the drilling tool outer assembly, and the inner water outlet channel, the outer water outlet channel and the cavity are communicated.
2. The core-pulling mechanism according to claim 1, wherein the drilling tool inner assembly comprises a core barrel, a core barrel joint and a drilling tool core, the drilling tool outer assembly comprises an outer pipe and an outer pipe joint, the outer pipe joint is fixedly connected with the outer pipe, the core barrel joint is fixedly connected with the core barrel, the gap is arranged between the outer pipe and the core barrel, the core barrel joint is connected with the outer pipe joint through the drilling tool core, one end of the drilling tool core is fixed on the outer pipe joint, and the other end of the drilling tool core is rotatably connected with the core barrel joint.
3. A coring mechanism as claimed in claim 2 wherein a rotary bearing is provided between the drill core and the core barrel.
4. A core-pulling mechanism according to claim 2 or 3, wherein said inner water outlet channel is provided in said drill core.
5. A coring mechanism as claimed in claim 2 or 3 wherein the cavity is provided in the core barrel, the cavity being provided with a concave spherical surface adjacent an end of the core barrel joint.
6. A coring mechanism according to claim 2, wherein the drill core is threadably secured to the outer coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660912.4A CN110630199A (en) | 2019-07-22 | 2019-07-22 | Core-pulling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660912.4A CN110630199A (en) | 2019-07-22 | 2019-07-22 | Core-pulling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110630199A true CN110630199A (en) | 2019-12-31 |
Family
ID=68969111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910660912.4A Pending CN110630199A (en) | 2019-07-22 | 2019-07-22 | Core-pulling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110630199A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677470A (en) * | 2020-06-03 | 2020-09-18 | 中国水利水电第四工程局有限公司 | Large-volume concrete large-aperture coring construction method for hydraulic and hydroelectric engineering |
| CN114263442A (en) * | 2021-12-27 | 2022-04-01 | 国家能源集团宁夏煤业有限责任公司 | Drilling coring device and drilling coring method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1511372A1 (en) * | 1987-12-17 | 1989-09-30 | Всесоюзный научно-исследовательский, проектно-конструкторский и технологический институт геологических, геофизических и геохимических информационных систем | Core-taking tool |
| CN204476329U (en) * | 2015-02-02 | 2015-07-15 | 陕西铁道工程勘察有限公司 | A kind of basement rock triple pipe core bit |
| CN108301802A (en) * | 2018-04-20 | 2018-07-20 | 河北省地矿局第七地质大队 | Core plugging notifying mechanism of rope core drilling assembly |
| CN210370562U (en) * | 2019-07-22 | 2020-04-21 | 鹤山市建筑设计院有限公司 | Core-pulling mechanism |
-
2019
- 2019-07-22 CN CN201910660912.4A patent/CN110630199A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1511372A1 (en) * | 1987-12-17 | 1989-09-30 | Всесоюзный научно-исследовательский, проектно-конструкторский и технологический институт геологических, геофизических и геохимических информационных систем | Core-taking tool |
| CN204476329U (en) * | 2015-02-02 | 2015-07-15 | 陕西铁道工程勘察有限公司 | A kind of basement rock triple pipe core bit |
| CN108301802A (en) * | 2018-04-20 | 2018-07-20 | 河北省地矿局第七地质大队 | Core plugging notifying mechanism of rope core drilling assembly |
| CN210370562U (en) * | 2019-07-22 | 2020-04-21 | 鹤山市建筑设计院有限公司 | Core-pulling mechanism |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677470A (en) * | 2020-06-03 | 2020-09-18 | 中国水利水电第四工程局有限公司 | Large-volume concrete large-aperture coring construction method for hydraulic and hydroelectric engineering |
| CN111677470B (en) * | 2020-06-03 | 2022-07-01 | 中国水利水电第四工程局有限公司 | Large-volume concrete large-aperture coring construction method for hydraulic and hydroelectric engineering |
| CN114263442A (en) * | 2021-12-27 | 2022-04-01 | 国家能源集团宁夏煤业有限责任公司 | Drilling coring device and drilling coring method |
| CN114263442B (en) * | 2021-12-27 | 2023-06-13 | 国家能源集团宁夏煤业有限责任公司 | Drilling coring device and drilling coring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2007242714B2 (en) | Method of controlling operation of rock drilling rig, and rock drilling rig | |
| US9062504B2 (en) | Rock drill bit, a drilling assembly and a method for percussive rock drilling | |
| US9322216B2 (en) | Annulus ring hole drill | |
| JP4749194B2 (en) | Soil sampling tool in auger drilling equipment | |
| CN210370562U (en) | Core-pulling mechanism | |
| CN110630199A (en) | Core-pulling mechanism | |
| US6189630B1 (en) | Downhole hammer-type core barrel | |
| CN103277037A (en) | Pipe pile leading-hole construction method under boulder cluster geological condition | |
| JP3953475B2 (en) | Underground boring hole drilling method and wet boring tool | |
| KR100686697B1 (en) | Tension and compressure supporting pile | |
| EP2467564B1 (en) | Downhole tool head for releasing precipitated solids | |
| RU2540132C2 (en) | Device for control of operation of cluster bit of submerged-type hammers | |
| JP5875849B2 (en) | Injection stirring ground improvement method | |
| JP2004092200A (en) | Boring head for screw auger | |
| WO2006015281A1 (en) | Device and method for collecting borehole samples | |
| RU109196U1 (en) | DRILLING CUTTING OPENING BIT | |
| FI128450B (en) | Drilling device for installing underground pipes in the ground | |
| CN111456642A (en) | Micro-core composite drill bit | |
| JP2008069531A (en) | Drilling system for ground, and drilling method using it | |
| CN221032502U (en) | Coring mechanism of drilling tool | |
| CN220167884U (en) | Double-core drill bit for construction engineering | |
| JPH0743264Y2 (en) | Bowling rod | |
| JP3420115B2 (en) | Shaft excavation method and its equipment | |
| KR100511342B1 (en) | core barrel | |
| JP3447689B2 (en) | Low water core boring system for surveys |
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 |