CN111911106B - Fishing device for taking out shallow drilling core and using method thereof - Google Patents
Fishing device for taking out shallow drilling core and using method thereof Download PDFInfo
- Publication number
- CN111911106B CN111911106B CN202010786091.1A CN202010786091A CN111911106B CN 111911106 B CN111911106 B CN 111911106B CN 202010786091 A CN202010786091 A CN 202010786091A CN 111911106 B CN111911106 B CN 111911106B
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- rock core
- barrel
- layer
- piston
- cylinder body
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- 238000005553 drilling Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 11
- 239000011435 rock Substances 0.000 claims abstract description 41
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000004816 latex Substances 0.000 claims description 3
- 229920000126 latex Polymers 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Abstract
The invention provides a fishing device for taking out shallow drilling rock cores, which comprises a barrel, wherein a piston is arranged in the barrel, the piston is driven to move in the barrel by a threaded rod screwed at the upper end of the barrel, a rotating rod is arranged at the end part of the threaded rod, a gas valve is also arranged at the upper end of the barrel, and a grabbing structure is arranged at the lower end of the barrel; snatch the structure including the spacing layer that is located the outside, the inboard of spacing layer is equipped with the inflation layer, and the inboard on inflation layer is equipped with the sucking disc, and the inflation layer is equipped with the inflation channel that upwards extends, and inflation channel passes through the inside intercommunication of connector and barrel. According to the invention, the rock core with a smooth surface or the rock core with an unsmooth surface can be clamped and fixed efficiently by skillfully utilizing the adsorption force of the sucking disc and the clamping force of the expansion layer, and can be taken out stably, so that the device has the characteristics of exquisite structural design and strong practicability.
Description
Technical Field
The invention belongs to the technical field of rock engineering investigation, and particularly relates to a fishing device for taking out a shallow drilling core and a using method thereof.
Background
In rock engineering exploration, design and research, drilling a core is one of necessary steps for acquiring rock characteristics. The small-sized and light shallow rock core sampling drilling machine is frequently used, but a shallow rock body is usually broken, and if the clamped rock core is not firm and the sampling method is improper, core falling accidents such as the falling back of the rock core to the bottom of a hole and the clamping of the rock core in the hole can easily occur, so that the success rate of coring is low.
In the prior art, different types of core fishers such as a clamp spring type, a steel wire rope and a rubber claw are invented to solve the problem of fishing cores. But because the shallow rock mass has more cracks, the fishing space is narrow and small, the rock core fisher has the defects of complex structure, complex process, low operation efficiency and the like, and is difficult to effectively solve the problem of shallow drilling rock core.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a fishing device for taking out shallow drilling cores and a using method thereof, and the specific scheme is as follows:
a fishing device for taking out shallow drilling rock cores comprises a barrel, wherein a piston is arranged in the barrel, the piston is driven by a threaded rod screwed on the upper end of the barrel to move in the barrel, a rotating rod is arranged at the end part of the threaded rod, a gas valve is further arranged at the upper end of the barrel, and a grabbing structure is arranged at the lower end of the barrel; the grabbing structure comprises a limiting layer positioned on the outer side, an expansion layer is arranged on the inner side of the limiting layer, a sucker is arranged on the inner side of the expansion layer, an inflation channel extending upwards is arranged on the expansion layer, and the inflation channel is communicated with the interior of the barrel through a connecting port; the outer diameter of the limiting layer is 2-5mm larger than that of the core needing to be taken out; the limiting layer is made of aluminum alloy or iron; the expansion layer is made of latex; the sucking disc is made of polyurethane rubber or nitrile rubber.
Based on the above, the use method of the fishing device for taking out the shallow drilling core comprises the following steps:
step 1: for the rock core with a smooth surface, firstly, extending the cylinder into the drill hole to enable the suction disc to sleeve the rock core, then opening the gas valve, rotating the pull rod through the rotating rod to enable the piston to slowly move outwards for a certain distance to enable the suction disc to suck the rock core, and finally, slowly taking out the cylinder to enable the rock core to be lifted out;
step 2: for the rock core with uneven surface, firstly, the barrel extends into the drill hole, the sucker is made to be sleeved in the rock core, then the gas valve is closed, the pull rod is rotated through the rotating rod to enable the piston to slowly move for a certain distance outwards, gas in the barrel during the outward movement of the piston enters the inflation channel through the connecting port to enable the expansion layer to expand, the sucker is made to tightly suck the rock core, and finally, the barrel is slowly taken out, so that the rock core is proposed together.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly has the following advantages:
according to the fishing device and the using method thereof, the sucker and the expansion hoop structure are ingeniously utilized, the fishing device for taking back the shallow drilling left rock core and the using method thereof are designed, the function of stably grabbing the rock core with a flat or uneven surface in a narrow space is realized by flexibly utilizing the adsorption force of the sucker and the expansion clamping force of the expansion hoop, and the fishing device is exquisite in structure, simple to manufacture and easy to operate.
Drawings
Fig. 1 is a schematic view of the overall structure of the fishing device of the present invention.
Fig. 2 is a schematic view of the fishing device in the invention.
In the figure: 1. a barrel; 2. a piston; 3. a threaded rod; 4. a rotating rod; 5. a gas valve; 6. grabbing the structure; 7. a suction cup; 8. an intumescent layer; 9. a limiting layer; 10. an inflation channel; 11. a connecting port; 12. drilling; 13. and (5) a core.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
Examples
As shown in fig. 1-2, the invention provides a fishing device for taking out a core of shallow drilling, which comprises a cylinder 1, wherein a piston 2 is arranged in the cylinder 1, the piston 2 is driven by a threaded rod 3 screwed at the upper end of the cylinder 1 to move in the cylinder 1, a rotating rod 4 is arranged at the end part of the threaded rod 3, a gas valve 5 is also arranged at the upper end of the cylinder 1, and a grabbing structure 6 for fixing a core 13 is arranged at the lower end of the cylinder 1.
Based on the above, the outer diameter of the limiting layer 9 is 2-5mm larger than the outer diameter of the core 13 to be taken out.
The material of the limiting layer 9 is aluminum alloy or iron.
The material of the expansion layer 8 is latex.
The material of the sucking disc 7 is polyurethane rubber or nitrile rubber.
The fishing device for extracting shallow drilling cores 13 according to the above, the use method thereof comprises the following steps:
step 1: for a rock core 13 with a smooth surface, firstly, a cylinder body 1 extends into a drill hole 12, a sucker 7 is used for sleeving the rock core 13, then, a gas valve 5 is opened, a pull rod is rotated through a rotating rod 4, a piston 2 slowly moves outwards for a certain distance, the sucker 7 is used for tightly sucking the rock core 13, and finally, the cylinder body 1 is slowly taken out, so that the rock cores 13 are lifted out together;
step 2: for the rock core 13 with uneven surface, firstly, the cylinder body 1 extends into the drill hole 12, the sucker 7 is used for sleeving the rock core 13, then the gas valve 5 is closed, the pull rod is rotated through the rotating rod 4, the piston 2 slowly moves outwards for a certain distance, gas in the cylinder body 1 during the outward movement of the piston 2 enters the inflation channel 10 through the connecting port 11, then the expansion layer 8 is expanded, the sucker 7 tightly sucks the rock core 13, and finally, the cylinder body 1 is slowly taken out, so that the rock core 13 is lifted out together.
The invention skillfully utilizes the adsorption force of the sucker 7 and the expansion clamping force of the expansion layer 8, can efficiently clamp and fix the core 13 with a smooth surface or the core 13 with an uneven surface, and takes the core 13 out of the drill hole 12.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (2)
1. A fishing device for taking out shallow drilling core, which is characterized in that: the device comprises a cylinder body (1), wherein a piston (2) is arranged in the cylinder body (1), the piston (2) is driven to move in the cylinder body (1) by a threaded rod (3) which is in threaded connection with the upper end of the cylinder body (1), a rotating rod (4) is arranged at the end part of the threaded rod (3), a gas valve (5) is also arranged at the upper end of the cylinder body (1), and a grabbing structure (6) is arranged at the lower end of the cylinder body (1); the grabbing structure (6) comprises a limiting layer (9) located on the outer side, an expansion layer (8) is arranged on the inner side of the limiting layer (9), a sucker is arranged on the inner side of the expansion layer (8), an inflation channel (10) extending upwards is arranged on the expansion layer (8), and the inflation channel (10) is communicated with the inside of the barrel body (1) through a connecting port (11); the outer diameter of the limiting layer (9) is 2-5mm larger than that of the core (13) to be taken out; the limiting layer (9) is made of aluminum alloy or iron; the expansion layer (8) is made of latex; the sucking disc is made of polyurethane rubber or nitrile rubber.
2. Use of a fishing device for extracting shallow drilling cores according to claim 1, characterized by comprising the following steps:
step 1: for a rock core (13) with a smooth surface, firstly, a cylinder body (1) extends into a drill hole (12), a sucker is used for sleeving the rock core (13), then, a gas valve (5) is opened, a pull rod is rotated through a rotating rod (4) to enable a piston (2) to slowly move outwards for a certain distance, the sucker is used for tightly sucking the rock core (13), and finally, the cylinder body (1) is slowly taken out, so that the rock core (13) is lifted out;
step 2: for the rock core (13) with uneven surface, firstly, the barrel body (1) extends into the drill hole (12), the sucking disc is enabled to sleeve the rock core (13), then, the gas valve (5) is closed, the pull rod is rotated through the rotating rod (4) to enable the piston (2) to slowly move outwards for a certain distance, gas in the barrel body (1) in the process that the piston (2) moves outwards enters the inflation channel (10) through the connecting port (11) to further enable the expansion layer (8) to expand, the sucking disc tightly sucks the rock core (13), and finally, the barrel body (1) is slowly taken out, so that the rock core (13) is lifted out together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010786091.1A CN111911106B (en) | 2020-08-07 | 2020-08-07 | Fishing device for taking out shallow drilling core and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010786091.1A CN111911106B (en) | 2020-08-07 | 2020-08-07 | Fishing device for taking out shallow drilling core and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111911106A CN111911106A (en) | 2020-11-10 |
| CN111911106B true CN111911106B (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010786091.1A Active CN111911106B (en) | 2020-08-07 | 2020-08-07 | Fishing device for taking out shallow drilling core and using method thereof |
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| Country | Link |
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| CN (1) | CN111911106B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153197A (en) * | 2021-05-10 | 2021-07-23 | 浙江固泰工程技术科技有限公司 | Hand-held type concrete drilling core machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7096952B2 (en) * | 2002-09-26 | 2006-08-29 | Baker Hughes Incorporated | Latch mechanism guide |
| CN102182414B (en) * | 2011-03-09 | 2013-12-25 | 浙江大学 | Deep-sea sediment core pressure-maintaining device matched with submarine drilling rig and method for using deep-sea sediment core pressure-maintaining device |
| US10253588B2 (en) * | 2016-11-04 | 2019-04-09 | Baker Hughes, A Ge Company, Llc | Finishing tool with inflatable overshot |
| CN206942712U (en) * | 2017-05-25 | 2018-01-30 | 湖南南方长河泵业有限公司 | A kind of deep well pump hydraulic pressure fishing gear |
| CN109655307B (en) * | 2019-01-30 | 2023-10-27 | 中国地质大学（武汉） | Undisturbed soil sampler |
| CN209539306U (en) * | 2019-01-31 | 2019-10-25 | 中国石油天然气股份有限公司 | Expansion type female tap |
| CN110593795B (en) * | 2019-10-30 | 2024-03-15 | 吕梁学院 | Mechanical arm type gas extraction hole sealing pipe salvaging device and use method |
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- 2020-08-07 CN CN202010786091.1A patent/CN111911106B/en active Active
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| CN111911106A (en) | 2020-11-10 |
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