CN101655003A - Air drilling double-wall drill rod - Google Patents
Air drilling double-wall drill rod Download PDFInfo
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- CN101655003A CN101655003A CN200910075593A CN200910075593A CN101655003A CN 101655003 A CN101655003 A CN 101655003A CN 200910075593 A CN200910075593 A CN 200910075593A CN 200910075593 A CN200910075593 A CN 200910075593A CN 101655003 A CN101655003 A CN 101655003A
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- tube body
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- pipe body
- pipe joint
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Abstract
The invention discloses an air drilling double-wall drill rod, consisting of an external pipe body and an internal pipe body. The upper end part of the external pipe body is provided with an internalscrew thread and an internal clamp table; the lower end part of the external pipe body is provided with an external screw thread, wherein the nominal diameter, the dentoform and the thread pitch of the external screw thread are as the same as those of the internal screw thread at the upper end part, and the screw thread length of the external screw thread is equal to that of the internal screw thread at the upper end part; the upper end part of the internal pipe body is fixedly provided with a pipe sleeve type internal pipe joint; a pipe body in the lower part of the internal pipe joint is fixedly provided with a ventilate pan which is matched with the inner diameter of the internal clamp table of the external pipe body, wherein the outer diameter of the internal pipe joint is less than the inner diameter of the external pipe body; the internal pipe body is hanged in the external pipe body by the ventilate pan thereof; the upper end face of the internal pipe joint is parallel with theupper end face of the external pipe body; the lower end face of the internal pipe body enters into the internal pipe joint of the other internal pipe body and is butt joint with the upper end face ofthe other internal pipe body when the external screw thread at the lower end part of the external pipe body is screwed into the internal screw thread of the other external pipe body; and the externalperipheral face of the internal pipe body is sealed with the internal peripheral face of the internal pipe joint of the other internal pipe body. The air drilling double-wall drill rod is convenient in maintenance.
Description
Technical field
The present invention relates to a kind of air drilling double-wall drill rod, the air drilling double-wall drill rod that especially a kind of interior tube body separates with outer tube body.
Background technology
At present, the air drilling double-wall drill rod of prior art, interior tube body and outer tube body are the integral type air drilling double-wall drill rod that is fixed together.The shortcoming one of this air drilling double-wall drill rod is a complex structure, the required precision height, and processing technology is loaded down with trivial details, and its fitting face need be heat-treated to improve abrasion resistance, manufacturing cost height; The 2nd, bearing pressure is lower, generally has only several kilograms; Three are to use the life-span short, and maintenance difficult can't be keeped in repair at the construction field (site), only could keep in repair in the maintenance producer of specialty.The direct result of above various shortcoming delays the duration exactly, the construction cost height.Therefore, designing that a kind of bearing pressure is big, simple in structure, low cost of manufacture, long service life, easy to maintenance, air drilling double-wall drill rod that construction cost is low, is the present technical issues that need to address.
Summary of the invention
Technical problem to be solved by this invention provides that a kind of bearing pressure is big, simple in structure, low cost of manufacture, long service life, easy to maintenance, air drilling double-wall drill rod that construction cost is low.
The technical scheme that the present invention solves its technical problem is:
A kind of air drilling double-wall drill rod, form by outer tube body and interior tube body, the upper end of outer tube body is processed with internal thread and Nei Katai, the bottom of outer tube body is processed with the internal thread nominal diameter with the upper end, tooth form is identical with pitch, the external screw thread that reach is suitable, be fixed with pipe box formula inner pipe joint in the upper end of interior tube body, on the interior tube body of the bottom of inner pipe joint, be fixed with air permeable disc with the internal diameter coupling of the Nei Katai of outer tube body, the external diameter of inner pipe joint is less than the internal diameter of outer tube body, interior tube body is suspended in the outer tube body by its air permeable disc, the upper surface of inner pipe joint is concordant with the upper surface of outer tube body, the lower surface of interior tube body enters when another root outer tube body internal thread of external screw thread precession of outer tube body bottom in the inner pipe joint of another root interior tube body and with the gap, upper surface of another root interior tube body and docks, the inner peripheral surface sealing of the inner pipe joint of the outer peripheral face of interior tube body and another root interior tube body.
The technical scheme that the present invention solves its technical problem can also be:
The internal thread of outer tube body of the present invention upper end and the external screw thread of body bottom are taper thread.
Pipe box formula inner pipe joint of the present invention is at the internal diameter of the upper surface part that the is higher than interior tube body external diameter greater than interior tube body, in inner pipe joint, be provided with lining and rubber ring, the external diameter of lining and rubber ring and the internal diameter of inner pipe joint coupling, the external diameter coupling of the internal diameter of lining and rubber ring and another root interior tube body.
Lining of the present invention is three of upper, middle and lower, and described rubber ring is two that are embedded in the middle of the adjacent in twos lining.
The invention has the beneficial effects as follows;
Compared with prior art, big, simple in structure, the low cost of manufacture of bearing pressure of the present invention, long service life, easy to maintenance, construction cost is low.
Description of drawings
Fig. 1 is structural representation of the present invention (two connection status).
Fig. 2 is an I portion enlarged drawing among Fig. 1.
The specific embodiment
As shown in the figure, a kind of air drilling double-wall drill rod, form by outer tube body 1 and interior tube body 2, the upper end of outer tube body 1 is processed with internal thread and Nei Katai, the bottom of outer tube body 1 is processed with the internal thread nominal diameter with the upper end, tooth form is identical with pitch, the external screw thread that reach is suitable, be fixed with pipe box formula inner pipe joint 4 in the upper end of interior tube body 2, on the interior tube body of the bottom of inner pipe joint 4, be fixed with air permeable disc 3 with the internal diameter coupling of the Nei Katai of outer tube body 1, the external diameter of inner pipe joint 4 is less than the internal diameter of outer tube body 1, interior tube body 2 is suspended in the outer tube body 1 by its air permeable disc 3, the upper surface of inner pipe joint 4 is concordant with the upper surface of outer tube body 1, the lower surface of interior tube body 2 enters when another root outer tube body 1 internal thread of external screw thread precession of outer tube body 1 bottom in the inner pipe joint 4 of another root interior tube body 2 and with the gap, upper surface of another root interior tube body 2 and docks, the inner peripheral surface sealing of the inner pipe joint 4 of the outer peripheral face of interior tube body 2 and another root interior tube body 2.The internal thread of described outer tube body 1 upper end and the external screw thread of body 1 bottom are taper thread.Described pipe box formula inner pipe joint 4 is at the internal diameter of the upper surface part that is higher than interior tube body 2 external diameter greater than interior tube body 2, in inner pipe joint 4, be provided with lining 5 and rubber ring 6, the internal diameter coupling of the external diameter of lining 5 and rubber ring 6 and inner pipe joint 4, the internal diameter of lining 5 and rubber ring 6 and the external diameter of another root interior tube body 2 coupling.Described lining 5 is three of upper, middle and lower, and described rubber ring 6 is for being embedded in two in the middle of the adjacent in twos lining 5.
Claims (4)
1, a kind of air drilling double-wall drill rod, form by outer tube body (1) and interior tube body (2), it is characterized in that: the upper end of outer tube body (1) is processed with internal thread and Nei Katai, the bottom of outer tube body (1) is processed with the internal thread nominal diameter with the upper end, tooth form is identical with pitch, the external screw thread that reach is suitable, be fixed with pipe box formula inner pipe joint (4) in the upper end of interior tube body (2), on the bottom interior tube body of inner pipe joint (4), be fixed with air permeable disc (3) with the internal diameter coupling of the Nei Katai of outer tube body (1), the external diameter of inner pipe joint (4) is less than the internal diameter of outer tube body (1), interior tube body (2) is suspended in the outer tube body (1) by its air permeable disc (3), the upper surface of inner pipe joint (4) is concordant with the upper surface of outer tube body (1), the lower surface of interior tube body (2) enters when another root outer tube body (1) internal thread of external screw thread precession of outer tube body (1) bottom in the inner pipe joint (4) of another root interior tube body (2) and with the gap, upper surface of another root interior tube body (2) and docks, the inner peripheral surface sealing of the inner pipe joint (4) of the outer peripheral face of interior tube body (2) and another root interior tube body (2).
2, a kind of air drilling double-wall drill rod according to claim 1 is characterized in that: the external screw thread of the internal thread of described outer tube body (1) upper end and body (1) bottom is a taper thread.
3, a kind of air drilling double-wall drill rod according to claim 1 and 2, it is characterized in that: described pipe box formula inner pipe joint (4) is at the internal diameter of the upper surface part that is higher than interior tube body (2) external diameter greater than interior tube body (2), in inner pipe joint (4), be provided with lining (5) and rubber ring (6), the internal diameter coupling of the external diameter of lining (5) and rubber ring (6) and inner pipe joint (4), the internal diameter of lining (5) and rubber ring (6) and the external diameter of another root interior tube body (2) coupling.
4, a kind of air drilling double-wall drill rod according to claim 3 is characterized in that: described lining (5) is three of upper, middle and lower, and described rubber ring (6) is for being embedded in two in the middle of the adjacent in twos lining (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910075593A CN101655003A (en) | 2009-09-26 | 2009-09-26 | Air drilling double-wall drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910075593A CN101655003A (en) | 2009-09-26 | 2009-09-26 | Air drilling double-wall drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101655003A true CN101655003A (en) | 2010-02-24 |
Family
ID=41709436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910075593A Pending CN101655003A (en) | 2009-09-26 | 2009-09-26 | Air drilling double-wall drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101655003A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410450A (en) * | 2013-08-13 | 2013-11-27 | 镇江安达煤矿专用设备有限公司 | Double-tubular drill rod |
| CN106837202A (en) * | 2017-04-13 | 2017-06-13 | 长沙矿山研究院有限责任公司 | The geological prospecting double-layer drill rod and its supporting drilling tool cored for negative pressure |
| CN108894733A (en) * | 2018-09-25 | 2018-11-27 | 徐州徐工基础工程机械有限公司 | Double-wall drill pipe and drilling machine |
-
2009
- 2009-09-26 CN CN200910075593A patent/CN101655003A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410450A (en) * | 2013-08-13 | 2013-11-27 | 镇江安达煤矿专用设备有限公司 | Double-tubular drill rod |
| CN106837202A (en) * | 2017-04-13 | 2017-06-13 | 长沙矿山研究院有限责任公司 | The geological prospecting double-layer drill rod and its supporting drilling tool cored for negative pressure |
| CN108894733A (en) * | 2018-09-25 | 2018-11-27 | 徐州徐工基础工程机械有限公司 | Double-wall drill pipe and drilling machine |
| CN108894733B (en) * | 2018-09-25 | 2024-04-30 | 徐州徐工基础工程机械有限公司 | Double-wall drill rod and drilling machine |
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20100224 |