CN202055788U - Rock core fisher - Google Patents
Rock core fisher Download PDFInfo
- Publication number
- CN202055788U CN202055788U CN2011201442580U CN201120144258U CN202055788U CN 202055788 U CN202055788 U CN 202055788U CN 2011201442580 U CN2011201442580 U CN 2011201442580U CN 201120144258 U CN201120144258 U CN 201120144258U CN 202055788 U CN202055788 U CN 202055788U
- Authority
- CN
- China
- Prior art keywords
- fisher
- core
- rock core
- inner cavity
- cone
- 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.)
- Expired - Fee Related
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- Earth Drilling (AREA)
Abstract
A rock core fisher belongs to the technical field of in-tunnel geology prospecting and comprises a drill rod and a fisher. One end of the fisher is fixedly connected with the drill rod, an inner cavity of the other end of the fisher is in a shape of a cone, and notches are processed on the wall of an end opening of the inner cavity. The rock core fisher is capable of decreasing labor intensity in fishing of rock cores and increasing production efficiency and rock core recycling rate.
Description
Technical field
The utility model relates to the tooling device of geological exploration boring in a kind of the hole, refers to that especially a kind of taking-up is trapped in the core fisher of the core in the boring.
Technical background
In reverse circulation drilling is visited, owing to be that waterpower is got core, there is core to be trapped in the drilling tool forever, the inclination angle is in the boring below 0 °.Extracting drilling tool more in the bit change process, core can be stayed in the hole from landing in the drilling tool.Before, can only adopt and repeat to creep into, core be smashed hydraulic pressure go out, in the process of smashing, because the alteration of form of core causes stifled boring easily, cause labour intensity to strengthen, production efficiency is low, also causes the rate of recovery of core to reduce, and geologic information is not accurate enough.
The utility model content
The utility model provides a kind of core fisher, the labour intensity step-down in the time of making coring, and production efficiency and core recovery improve.
The technical scheme that is adopted is: a kind of core fisher, and it comprises drilling rod and fisher, and an end of described fisher is fixedlyed connected with described drilling rod, and the inner chamber of the other end of this fisher is on the wall of cone and its port and is processed with breach.
Labour intensity step-down when the utility model can make coring, production efficiency and core recovery improve.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Be further described this use is novel below in conjunction with accompanying drawing.
With reference to Fig. 1, a kind of core fisher, it comprises drilling rod 1 and fisher 2, and an end of described fisher 2 is fixedlyed connected with described drilling rod 1 screw thread, and the inner chamber of the other end of this fisher 2 is on the wall of cone and its port and is processed with breach 3.Fisher 2 should adopt the lower steel of hardness, and as A3# steel etc., its external diameter is identical with bore diameter, length 14CM, and its cone front end oral area thickness is 1MM; The fisher 2 that processes is installed in drilling rod 1 front end, be lowered in the boring with the slow-speed of revolution, because it is identical with the hole wall diameter, can import the core that is detained in the hole in the fisher 2, when under drilling tool, arriving the bottom, hole, be subjected to the effect of propulsive force, fisher 2 front ends are interior to be received because the existence of breach 3 makes, and core is enclosed in the drilling tool propose.
Claims (1)
1. core fisher, it is characterized in that: it comprises drilling rod (1) and fisher (2), one end of described fisher (2) is fixedlyed connected with described drilling rod (1), and the inner chamber of the other end of this fisher (2) is on the wall of cone and its port and is processed with breach (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201442580U CN202055788U (en) | 2011-05-09 | 2011-05-09 | Rock core fisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201442580U CN202055788U (en) | 2011-05-09 | 2011-05-09 | Rock core fisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202055788U true CN202055788U (en) | 2011-11-30 |
Family
ID=45015765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201442580U Expired - Fee Related CN202055788U (en) | 2011-05-09 | 2011-05-09 | Rock core fisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202055788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396238A (en) * | 2022-01-26 | 2022-04-26 | 北京探矿工程研究所 | Rock core withdrawing device |
-
2011
- 2011-05-09 CN CN2011201442580U patent/CN202055788U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396238A (en) * | 2022-01-26 | 2022-04-26 | 北京探矿工程研究所 | Rock core withdrawing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20150509 |
|
| EXPY | Termination of patent right or utility model |