CN215860062U - Core sampling device capable of improving sampling rate - Google Patents
Core sampling device capable of improving sampling rate Download PDFInfo
- Publication number
- CN215860062U CN215860062U CN202121294589.2U CN202121294589U CN215860062U CN 215860062 U CN215860062 U CN 215860062U CN 202121294589 U CN202121294589 U CN 202121294589U CN 215860062 U CN215860062 U CN 215860062U
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- pipe
- inner pipe
- drill
- pipe joint
- joint
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a rock core sampling device capable of improving sampling rate, which comprises a drill rod joint, an outer pipe, an inner pipe joint and a drill bit, wherein the middle part of the drill rod joint is in threaded connection with the upper end of the outer pipe; the inner pipe is arranged in the outer pipe, a gap exists between the inner pipe and the outer pipe, and the drill rod joint is provided with a water through hole communicated with the gap. The utility model can increase the friction force between the rock core and the rock core pipe, avoid the falling of the rock core and improve the rock core sampling rate, thereby ensuring the fidelity of the rock core sample and the accuracy of identifying and dividing the stratum.
Description
Technical Field
The utility model relates to the technical field of engineering geological exploration, in particular to a core sampling device for improving sampling rate.
Background
Geological exploration is one of important works of engineering construction of roads, bridges, buildings and the like or mineral resource exploration, and drilling is an important technical means, wherein a drilling machine drills downwards from the ground surface to form a cylindrical drilling hole in a stratum so as to identify and divide the stratum, and rock cores, mineral samples and soil samples obtained at different depths in the drilling hole are analyzed and researched so as to measure physical and mechanical properties and indexes of the rock and the soil layer. In engineering geological drilling, the construction quality is directly influenced by the height of the core sampling rate, the condition of underground geological landform can be effectively reduced by the high sampling rate of the core, the most direct evidence is provided for engineering geological analysis, the engineering quality is effectively improved, a leaking layer is often caused by the lower core sampling rate, misjudgment is caused during the engineering geological analysis, the engineering quality is seriously influenced, and if the core sampling rate does not meet the requirements of relevant standards, national standards and benchmarks in the construction process, the occurrence of the waste hole condition can be caused, the construction efficiency is reduced, and the engineering construction cost is improved.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the core sampling device for improving the sampling rate, which can increase the friction force between the core and the core pipe, avoid the falling of the core and improve the sampling rate of the core, thereby ensuring the fidelity of a core sample and the accuracy of identification and division of stratums.
The technical scheme adopted by the utility model is as follows: the core sampling device capable of improving the sampling rate comprises a drill rod joint, an outer pipe, an inner pipe joint and a drill bit, wherein the middle of the drill rod joint is in threaded connection with the upper end of the outer pipe, the lower end of the outer pipe is in threaded connection with the drill bit, the lower part of the drill rod joint extends into the outer pipe, a bearing seat is arranged at the lower part of the drill rod joint, and a bearing is arranged in the bearing seat; the inner tube locate in the outer tube, there is the clearance between inner tube and the outer tube, drill rod joint is equipped with the limbers that communicates with the clearance, inner tube coupling connection is passed through in the upper end of inner tube in the inner circle of bearing, the inner tube does not rotate along with the outer tube, be equipped with a plurality of recesses on the inside wall of inner tube, set up the dwang in the recess, rotor plate and spring, the lower extreme of recess is located to the dwang, the dwang both ends are rotated and are connected in recess both sides wall, the rotor plate lower extreme is connected on the rotor plate, the one end of upper end coupling spring, the other end of spring is connected on the diapire of recess.
As the optimization of the technical scheme, the grooves are symmetrically arranged on the inner side wall of the inner pipe.
Preferably, in the present invention, the upper end of the inner tube is connected to the inner ring of the bearing by an inner tube joint, which means that a lower portion of the inner tube joint is screwed to the upper end of the inner tube, and an upper portion of the inner tube joint is connected to the inner ring of the bearing.
Preferably, the inner pipe is formed by folding two half-closed inner pipes, and the upper end and the lower end of the inner pipe are respectively fixed by an upper clamping ring and a lower clamping ring.
Preferably, the drill bit is provided with a drain hole, and the drain hole is communicated with the gap between the inner pipe and the outer pipe.
Preferably, the drainage holes are annularly arranged on the side wall of the drill bit.
After adopting the structure, compared with the prior art, the utility model has the following advantages: according to the utility model, through the arrangement of the inner pipe and the outer pipe, the scouring liquid does not enter the inner pipe to scour the rock core, the rotating rod, the rotating plate and the spring are arranged on the inner wall of the inner pipe, and under the condition that the rock core enters the inner pipe, when the rod is lifted, the rotating plate protrudes out of the inner side wall of the inner pipe under the action of the rock core and the spring, so that the friction force between the rock core and the pipe wall of the inner pipe is increased, the rock core is prevented from falling off due to the lifting of a drilling tool, and the sampling rate of the rock core is increased.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the connection structure of the inner pipe and the inner pipe joint of the present invention.
Fig. 3 is a view a-a in fig. 2.
In the figure, 1, a drill rod joint 1.1, a water through hole 2, an outer pipe 3, an inner pipe 4, a drill bit 4.1, a water discharging hole 5, a bearing seat 6, a bearing 7, an inner pipe joint 8, a rotating plate 9, a rotating rod 10 and a spring.
Detailed Description
The utility model is described in detail below with reference to the figures and examples.
As shown in fig. 1, 2 and 3, the core sampling device for improving the sampling rate comprises a drill rod joint 1, an outer pipe 2, an inner pipe 3, an inner pipe joint 7 and a drill bit 4, wherein the middle part of the drill rod joint 1 is in threaded connection with the upper end of the outer pipe 2, the lower end of the outer pipe 2 is in threaded connection with the drill bit 4, the lower part of the drill rod joint 1 is smaller than the upper part and can extend into the outer pipe 2, a bearing seat 5 is arranged at the lower part of the drill rod joint 1, and a bearing 6 is arranged in the bearing seat 5; inner tube 3 locates in outer tube 2, there is the clearance between inner tube 3 and the outer tube 2, the axis of inner tube 3 and outer tube 2 is same axis, establish limbers 1.1 of mounting hole and this clearance intercommunication in the tool joint 1, inner tube joint 7 is connected in the inner circle of bearing 6 through the upper end of inner tube 3, inner tube 3 does not rotate along with outer tube 2, be equipped with a plurality of recesses on the inside wall of inner tube 3, set up dwang 9 in the recess, rotor plate 8 and spring 10, the lower extreme of recess is located to dwang 9, dwang 9 both ends are rotated and are connected in the recess both sides wall, 8 lower extremes of rotor plate are connected on dwang 9, the one end of upper end coupling spring 10, the other end of spring 10 is connected on the diapire of recess.
When the utility model is implemented, the plurality of grooves are symmetrically arranged on the inner side wall of the inner pipe 3, the length of each groove extends along the axis of the inner pipe 3, the surface of the rotating plate 8, back to the grooves, is consistent with the shape of the inner side wall of the inner pipe 3, and the rotating plate 8 can be embedded into the grooves to be flush with the inner side wall of the inner pipe 3 through rotation. The upper end of the inner pipe 3 is provided with a threaded end, the lower part of the inner pipe joint 7 is also provided with a matched threaded section, the upper end of the inner pipe 3 is in threaded connection with the lower part of the inner pipe joint 7, and the upper part of the inner pipe joint 7 is connected with the inner ring of the bearing 6 and is in interference fit with the inner ring of the bearing 6.
The inner pipe 3 of the utility model is formed by combining two half-closed inner pipes, the upper end and the lower end of the inner pipe are respectively fixed by the upper clamping ring and the lower clamping ring, and the original shape of the adopted core can be kept. The drill bit 4 is provided with a drain hole 4.1, and the drain hole 4.1 is communicated with the clearance between the inner tube 3 and the outer tube 2. The drainage holes 4.1 are arranged annularly on the side wall of the drill 4.
When the drill pipe joint is used specifically, the drill pipe joint is connected with an external driving device and used for providing power to drive the outer pipe and the drill bit to drill a stratum, a drilled core enters the inner pipe, the rotating plate is pressed when the core enters the inner pipe and can pass smoothly, and when the drill is lifted when the core is drilled, the rotating plate protrudes out of the inner side wall of the inner pipe under the action of the gravity of the core and the spring, so that the friction force between the core and the inner side wall of the inner pipe is increased, the risk of falling of the core is reduced, and the sampling rate of the core is improved. According to the utility model, the flushing fluid is added through the mounting hole of the drill rod joint, and is discharged through the gap between the inner pipe and the outer pipe and the drain hole on the drill bit, so that the drill bit can be cooled without flushing the core.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (6)
1. The utility model provides an improve core of taking rate and adopt device which characterized in that: the drill pipe joint comprises a drill pipe joint, an outer pipe, an inner pipe joint and a drill bit, wherein the middle part of the drill pipe joint is in threaded connection with the upper end of the outer pipe, the lower end of the outer pipe is in threaded connection with the drill bit, the lower part of the drill pipe joint extends into the outer pipe, the lower part of the drill pipe joint is provided with a bearing seat, and a bearing is arranged in the bearing seat; the inner tube locate in the outer tube, there is the clearance between inner tube and the outer tube, drill rod joint is equipped with the limbers that communicates with the clearance, inner tube coupling connection is passed through in the upper end of inner tube in the inner circle of bearing, the inner tube does not rotate along with the outer tube, be equipped with a plurality of recesses on the inside wall of inner tube, set up the dwang in the recess, rotor plate and spring, the lower extreme of recess is located to the dwang, the dwang both ends are rotated and are connected in recess both sides wall, the rotor plate lower extreme is connected on the rotor plate, the one end of upper end coupling spring, the other end of spring is connected on the diapire of recess.
2. An enhanced extraction rate core extraction apparatus as claimed in claim 1, wherein: the grooves are symmetrically arranged on the inner side wall of the inner pipe.
3. An enhanced extraction rate core extraction apparatus as claimed in claim 1, wherein: the upper end of the inner pipe is connected to the inner ring of the bearing through the inner pipe joint, that is, the lower part of the inner pipe joint is in threaded connection with the upper end of the inner pipe, and the upper part of the inner pipe joint is connected to the inner ring of the bearing.
4. An enhanced extraction rate core extraction apparatus as claimed in claim 1, wherein: the inner pipe is formed by two half-closed inner pipes in a involution way, and the upper end and the lower end of the inner pipe are respectively fixed by an upper clamping ring and a lower clamping ring.
5. An enhanced extraction rate core extraction apparatus as claimed in claim 1, wherein: the drill bit is provided with a drain hole which is communicated with the gap between the inner pipe and the outer pipe.
6. An improved extraction rate core extraction apparatus according to claim 5, wherein: the drain holes are annularly arranged on the side wall of the drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121294589.2U CN215860062U (en) | 2021-06-10 | 2021-06-10 | Core sampling device capable of improving sampling rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121294589.2U CN215860062U (en) | 2021-06-10 | 2021-06-10 | Core sampling device capable of improving sampling rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215860062U true CN215860062U (en) | 2022-02-18 |
Family
ID=80314877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121294589.2U Expired - Fee Related CN215860062U (en) | 2021-06-10 | 2021-06-10 | Core sampling device capable of improving sampling rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215860062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541335A (en) * | 2022-04-06 | 2022-05-27 | 西安中交土木科技有限公司 | Energy dissipation box and energy dissipation device for anchor chain and ship arresting device |
-
2021
- 2021-06-10 CN CN202121294589.2U patent/CN215860062U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541335A (en) * | 2022-04-06 | 2022-05-27 | 西安中交土木科技有限公司 | Energy dissipation box and energy dissipation device for anchor chain and ship arresting device |
| CN114541335B (en) * | 2022-04-06 | 2023-09-29 | 西安中交土木科技有限公司 | Energy consumption box for anchor chain, energy consumption device and ship arresting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |