CN212105807U - Claw spring type double-tube sampling drilling tool - Google Patents
Claw spring type double-tube sampling drilling tool Download PDFInfo
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- CN212105807U CN212105807U CN201922201781.1U CN201922201781U CN212105807U CN 212105807 U CN212105807 U CN 212105807U CN 201922201781 U CN201922201781 U CN 201922201781U CN 212105807 U CN212105807 U CN 212105807U
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Abstract
The utility model provides a double-barrelled sample drilling tool of claw spring formula, including outer tube, drill bit, sampling tube and claw spring, the drill bit is through fixing the bottom at the outer tube, and the center of drill bit has the thief hole that link up the upper and lower surface of drill bit, and the sampling tube setting is in the inside of outer tube and the bottom opening of sampling tube aims at on the thief hole of drill bit, and the bottom opening part of sampling tube is provided with the claw spring that avoids the sample to drop. The sampling drilling tool can improve the drilling efficiency, ensures that the sample does not fall off, and is suitable for sampling of soft stratum and sand layer.
Description
Technical Field
The utility model relates to a sample drilling tool especially relates to a sample drilling tool that is suitable for loose soft stratum and sand bed
Background
At present, core tube (or semi-closed tube) drilling tools with step drill bits and bailing barrel drilling tools with hinge plate drill bits are adopted as common sampling drilling tools for loose soft stratum and sand layer under the condition of outer casing protection wall. The disadvantages of the outer sleeve retaining wall sampling are: the process is complicated, firstly the outer sleeve is put in, then the sampling drilling tool is put in the outer sleeve, then the outer sleeve is followed, then the sampling drilling tool is put in, and finally the outer sleeve is pulled out after the sampling drilling tool drills to the preset depth. The sampling drill also has the following disadvantages: 1) when a core tube (or semi-closed tube) drilling tool with a step drill bit is used for sampling a soft stratum and a sand layer, a sample is easy to enter, but the drill bit is not provided with a core protection device, so that the sample is easy to fall off when the drill bit is lifted, and the sampling cannot be performed. 2) When sampling in a soft stratum and a sand layer, a sand bailing barrel drilling tool with a hinge plate drill bit is easy to enter a sample, but is not easy to exit, and when the sample is withdrawn by hammering or water pressure, the integrity and continuity of the sample are damaged, and the stratum position where the sample is located cannot be accurately judged.
In view of the above-mentioned drawbacks, the present inventors have conducted extensive studies and practice to achieve the present method to solve the above-mentioned drawbacks.
Disclosure of Invention
In order to solve the problem that exists among the background art, the utility model provides a double-barrelled sample drilling tool of claw spring formula, this sample drilling tool can improve probing efficiency, guarantees that the sample does not drop, is suitable for the sample of soft stratum and sand bed.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a double-barrelled sample drilling tool of claw spring formula, includes outer tube, drill bit, sampling tube and claw spring, its characterized in that: the drill bit is through fixing in the bottom of outer tube, and the center of drill bit has the thief hole that link up the drill bit upper and lower surface, and the thief tube setting is in the inside of outer tube and the bottom opening of thief tube aims at on the thief hole of drill bit, and the bottom opening part of thief tube is provided with the claw spring of avoiding the sample to drop.
The claw spring comprises an annular ring, a plurality of claw spring pieces extending upwards are arranged on the upper surface of the annular ring around the circumference of the annular ring, and the claw spring pieces bend towards the central axis of the annular ring on the upper part of the upper surface of the annular ring.
The middle part of the annular ring is provided with an annular inner hole, and the inner diameter of the annular inner hole is equal to or larger than the sampling hole of the drill bit.
The inner diameter of the annular inner hole is smaller than or equal to the inner diameter of the sampling tube.
The claw spring is arranged at the bottom opening of the sampling tube in a threaded, inserted or riveted mode.
The side of the claw spring with the claw spring leaf is arranged on the side far away from the drill bit.
The sampling tube is made of transparent plastic tube.
The pawl spring is made of steel or plastic.
The sampling drilling tool also comprises an inner tube, wherein the inner tube is positioned inside the outer tube and above the sampling tube.
The bottom end of the inner tube is connected with the upper end of the sampling tube through a sampling tube joint.
The utility model has the advantages that: compared with a drilling method of casing pipe protecting walls, the method has the advantages that the inner and outer pipes are synchronously tracked, drilling procedures can be reduced, time is saved, labor intensity is reduced, and drilling efficiency is improved. The claw spring core protecting device can ensure that the sample does not fall off, and is suitable for sampling soft stratum and sand layer.
Drawings
The present invention will be further explained with reference to the accompanying drawings
Fig. 1 is a schematic sectional structure view of a sampling drilling tool according to the present invention;
FIG. 2 is a front view of a pawl spring of the sampling drill according to the present invention;
fig. 3 is a top view of the jaw spring of the sampling drill of the present invention.
Detailed Description
The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:
example 1
As shown in fig. 1, a jaw spring type double-tube sampling drilling tool comprises an outer tube 1, a drill bit 2, a sampling tube 3 and a jaw spring 4, wherein the drill bit 2 is fixed at the bottom of the outer tube 1 through threaded connection, the center of the drill bit 2 is provided with a sampling hole penetrating through the upper surface and the lower surface of the drill bit, the sampling tube 3 is arranged inside the outer tube 1, and the bottom of the sampling tube 3 is opened and aligned above the sampling hole of the drill bit 2. The bottom opening of the sampling tube 3 is provided with a claw spring 4, the structure of the claw spring 4 is shown in fig. 2-3, the claw spring 4 comprises an annular ring 41, the middle part of the annular ring 41 is provided with an annular inner hole, the inner diameter of the annular inner hole is equal to or larger than the sampling hole of the drill bit 2, and the inner diameter of the annular inner hole is smaller than or equal to the inner diameter of the sampling tube 3. A plurality of claw spring pieces 42 protruding upward are provided on the upper surface of the annular ring 41 around the circumference of the annular ring, and the claw spring pieces 42 are bent toward the central axis of the annular ring at the upper portion of the annular ring 41. Preferably, the pawl spring 4 is disposed at the bottom opening of the sampling tube 3 by means of a screw thread, a plug connection or a rivet connection.
When mounted, the side of the pawl spring 4 with the pawl spring plate 42 is arranged on the side away from the drill bit. When drilling, the drill bit 2 rotates to drive the whole sampling drilling tool to go deep downwards, a sample enters the sampling tube 3 from a sampling hole along with the deep and upward penetration of the drill bit, the claw spring sheet of the claw spring 4 extends towards the upper part, the sample enters the sampling tube 3 upwards, the claw spring sheet 42 of the claw spring 4 does not block the upward movement of the sample, and when drilling is carried out, the claw spring sheet 42 of the claw spring 4 blocks the downward movement of the sample in the sampling tube 3, so that the sample is prevented from falling off when drilling is carried out.
Preferably, the sampling tube 3 can be a transparent plastic tube. The pawl spring 4 is made of steel or plastic.
The sampling drilling tool also comprises an inner tube 6, wherein the inner tube 6 is positioned inside the outer tube 1 and above the sampling tube 3, and the bottom end of the inner tube 6 is connected with the upper end of the sampling tube 3 through a sampling tube joint 5.
Those skilled in the art will recognize that a wide variety of modifications, alterations, and combinations can be made with respect to the above described embodiments without departing from the scope of the invention, and that such modifications, alterations, and combinations are to be viewed as being within the ambit of the inventive concept.
Claims (10)
1. The utility model provides a double-barrelled sample drilling tool of claw spring formula, includes outer tube, drill bit, sampling tube and claw spring, its characterized in that: the drill bit is through fixing in the bottom of outer tube, and the center of drill bit has the thief hole that link up the drill bit upper and lower surface, and the thief tube setting is in the inside of outer tube and the bottom opening of thief tube aims at on the thief hole of drill bit, and the bottom opening part of thief tube is provided with the claw spring of avoiding the sample to drop.
2. A jaw spring type double tube sampling drill as claimed in claim 1, wherein the jaw spring comprises an annular ring, a plurality of upwardly protruding jaw springs are provided on an upper surface of the annular ring around a circumference of the annular ring, and the jaw springs are bent toward a central axis of the annular ring at an upper portion of an upper surface of the annular ring.
3. A jaw spring type double tube sampling drill as claimed in claim 2, wherein the annular ring has an annular inner hole in the middle thereof, the inner diameter of the annular inner hole being equal to or larger than the sampling diameter of the drill bit.
4. A jaw spring type double tube sampling drill as claimed in claim 3, wherein the inner diameter of the annular inner bore is less than or equal to the inner diameter of the sampling tube.
5. The jaw spring type double-tube sampling drill as claimed in claim 2, wherein the jaw spring is disposed at the bottom opening of the sampling tube by means of screw, insertion or riveting.
6. A jaw spring type double tube sampling drill as claimed in claim 2, wherein the face of the jaw spring having the jaw spring plate is disposed on the side away from the drill bit.
7. The jaw spring type double tube sampling drill as set forth in claim 2, wherein the sampling tube is made of a transparent plastic tube.
8. A jaw spring type double tube sampling drill as claimed in claim 2, wherein the jaw spring is made of steel or plastic.
9. A jaw spring type double tube sampling drill according to claim 1, further comprising an inner tube positioned inside the outer tube and above the sampling tube.
10. A jaw spring type double tube sampling drill as claimed in claim 1, wherein the bottom end of the inner tube is connected to the upper end of the sampling tube by a sampling tube joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922201781.1U CN212105807U (en) | 2019-12-10 | 2019-12-10 | Claw spring type double-tube sampling drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922201781.1U CN212105807U (en) | 2019-12-10 | 2019-12-10 | Claw spring type double-tube sampling drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212105807U true CN212105807U (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922201781.1U Active CN212105807U (en) | 2019-12-10 | 2019-12-10 | Claw spring type double-tube sampling drilling tool |
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| CN (1) | CN212105807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805404A (en) * | 2019-12-10 | 2020-02-18 | 中煤地第二勘探局集团有限责任公司 | Claw spring type double-tube sampling drilling tool |
-
2019
- 2019-12-10 CN CN201922201781.1U patent/CN212105807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110805404A (en) * | 2019-12-10 | 2020-02-18 | 中煤地第二勘探局集团有限责任公司 | Claw spring type double-tube sampling drilling tool |
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