CN112554808A - Driving key for drill rod - Google Patents
Driving key for drill rod Download PDFInfo
- Publication number
- CN112554808A CN112554808A CN202011578584.2A CN202011578584A CN112554808A CN 112554808 A CN112554808 A CN 112554808A CN 202011578584 A CN202011578584 A CN 202011578584A CN 112554808 A CN112554808 A CN 112554808A
- Authority
- CN
- China
- Prior art keywords
- drill rod
- rod body
- driving
- key
- driving key
- 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.)
- Pending
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a driving key for a drill rod, which comprises a drill rod body, wherein a plurality of driving keys which are arranged in a circular array are arranged in the drill rod body, and the driving keys are manufactured by cutting the inner side surface of the drill rod body and are integrally formed with the drill rod body; the structure of the driving key is cut in the drill rod body in a linear cutting mode, so that the connection part of the drill rod body and the driving key is firmer, and the situation that the welding part of the driving key and the drill rod body cracks due to internal and external pressure is avoided; the driving key and the drill rod body are integrally formed, so that the service life of the drill rod body is longer; the arrangement of the first arc angle, the second arc angle and the third arc angle enables the stress surface to be enlarged, and the damage to the driving key is reduced; the cost of maintaining the drill rod is reduced, and a large amount of resources are saved.
Description
Technical Field
The invention relates to a structure of a drill rod, in particular to a driving key for the drill rod.
Background
The drill rod is a steel pipe with threads at the tail part and is used for connecting equipment on the surface of the drilling machine and drilling and grinding equipment or a bottom hole device positioned at the bottom of a drilling well. The purpose of the drill pipe is to carry drilling mud to the drill bit and, together with the drill bit, raise, lower or rotate the bottom hole assembly. The drill pipe must be able to withstand large internal and external pressures, twisting, bending and vibration. The existing driving key is arranged on the inner side wall of the drill rod body in a welding mode, when the drill rod is in a rotating process, the welding position of the driving key and the drill rod body is easy to crack, and the service life of the drill rod body is shortened.
Therefore, a driving key for a drill rod, which can prolong the service life of the drill rod, is a problem to be solved urgently.
Disclosure of Invention
The invention aims to solve the technical problems that in the prior art, the welding part of a driving key and a drill rod body is easy to crack, so that the service life of the drill rod body is shortened and the like.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a drive key for drilling rod, includes the drilling rod body, this internal drive key that is a plurality of circular array arrangements that is equipped with of drilling rod, the drive key forms through cutting the preparation of drilling rod body medial surface, is the integrated into one piece setting with the drilling rod body.
Further, the driving keys include a first driving key, a second driving key, and a third driving key.
Further, the mode of cutting the drill rod body is wire cutting.
Furthermore, the first driving key, the second driving key and the third driving key are all arranged in an arc shape.
Further, the crossing department of first drive key and drilling rod body all is equipped with first camber angle, the crossing department of second drive key and drilling rod body all is equipped with the second camber angle, the crossing department of third drive key and drilling rod body all is equipped with the third camber angle.
Further, the first arc angle, the second arc angle and the third arc angle are the same in size.
Compared with the prior art, the invention has the advantages that: the structure of the driving key is cut in the drill rod body in a linear cutting mode, so that the connection part of the drill rod body and the driving key is firmer, and the situation that the welding part of the driving key and the drill rod body cracks due to internal and external pressure is avoided; the driving key and the drill rod body are integrally formed, so that the service life of the drill rod body is longer; the arrangement of the first arc angle, the second arc angle and the third arc angle enables the stress surface to be enlarged, and the damage to the driving key is reduced; the cost for maintaining the drill rod is reduced, and a large amount of resources are saved; the invention has reasonable design and is worth popularizing.
Drawings
FIG. 1 is a schematic view of a drive key for a drill rod;
FIG. 2 is a cross-sectional view of a drive key for a drill rod;
as shown in the figure: 1. drilling rod body, 2, drive key, 3, first drive key, 4, second drive key, 5, third drive key, 6, first camber angle, 7, second camber angle, 8, third camber angle.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 1-2.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
The invention provides a driving key for a drill rod in specific implementation, which comprises a drill rod body 1, wherein a plurality of driving keys 2 arranged in a circular array are arranged in the drill rod body 1, and the driving keys are manufactured by cutting the inner side surface of the drill rod body 1 and are integrally formed with the drill rod body 1.
The drive keys 2 include a first drive key 3, a second drive key 4 and a third drive key 5.
The mode of cutting the drill rod body 1 is linear cutting.
The first driving key 3, the second driving key 4 and the third driving key 5 are all arranged in an arc shape.
The crossing department of first drive key 3 and drilling rod body 1 all is equipped with first camber angle 6, the crossing department of second drive key 4 and drilling rod body 1 all is equipped with second camber angle 7, the crossing department of third drive key 5 and drilling rod body 1 all is equipped with third camber angle 8.
The first arc angle 6, the second arc angle 7 and the third arc angle 8 are the same in size.
The specific implementation process of the driving key for the drill rod comprises the following steps: firstly, a steel pipe for manufacturing a drill rod body 1 is selected, a part to be cut is marked on the steel pipe, the part to be cut is cut off by using a linear cutting device, the rest part is the driving keys 2 arranged in a circular array, and the driving keys 2 are arranged in an arc shape.
According to the invention, the structure of the driving key 2 is cut in the drill rod body 1 in a linear cutting manner, so that the connection part of the drill rod body 1 and the driving key 2 is firmer, and the occurrence of cracking at the welding part of the driving key 2 and the drill rod body 1 caused by internal and external pressure is avoided; the driving key 2 and the drill rod body 1 are integrally formed, so that the service life of the drill rod body is longer; the arrangement of the first arc angle 6, the second arc angle 7 and the third arc angle 8 enables the stress surface to be enlarged, and the damage to the driving key is reduced; the cost for maintaining the drill rod is reduced, and a large amount of resources are saved; the invention has reasonable design and is worth popularizing.
The present invention and its embodiments have been described above, but the description is not limitative, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A drive key for a drill rod, comprising a drill rod body (1), characterized in that: the drill rod is characterized in that a plurality of driving keys (2) which are arranged in a circular array are arranged in the drill rod body (1), and the driving keys are manufactured by cutting the inner side surface of the drill rod body (1) and are arranged in an integrated manner with the drill rod body (1).
2. A drive key for a drill rod as claimed in claim 1, wherein: the driving keys (2) comprise a first driving key (3), a second driving key (4) and a third driving key (5).
3. A drive key for a drill rod as claimed in claim 1, wherein: the mode of cutting the drill rod body (1) is linear cutting.
4. A drive key for a drill rod according to claim 2, wherein: the first driving key (3), the second driving key (4) and the third driving key (5) are all arranged in an arc shape.
5. A drive key for a drill rod according to claim 2, wherein: the drill rod driving mechanism is characterized in that a first arc angle (6) is arranged at the intersection of the first driving key (3) and the drill rod body (1), a second arc angle (7) is arranged at the intersection of the second driving key (4) and the drill rod body (1), and a third arc angle (8) is arranged at the intersection of the third driving key (5) and the drill rod body (1).
6. A drive key for a drill rod according to claim 5, wherein: the first arc angle (6), the second arc angle (7) and the third arc angle (8) are the same in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011578584.2A CN112554808A (en) | 2020-12-28 | 2020-12-28 | Driving key for drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011578584.2A CN112554808A (en) | 2020-12-28 | 2020-12-28 | Driving key for drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112554808A true CN112554808A (en) | 2021-03-26 |
Family
ID=75033804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011578584.2A Pending CN112554808A (en) | 2020-12-28 | 2020-12-28 | Driving key for drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112554808A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201687401U (en) * | 2010-04-16 | 2010-12-29 | 常琦 | Integral drive key sleeve type drill stem of rotary drilling rig |
| CN201908580U (en) * | 2011-02-22 | 2011-07-27 | 王永智 | Large-torque drill rod |
| CN103277053A (en) * | 2013-05-28 | 2013-09-04 | 天津鸿翔工程机械有限公司 | Drill stem with floral tube |
| CN205445500U (en) * | 2015-12-25 | 2016-08-10 | 徐州恒兴金桥机械科技有限公司 | Dig drive key structure of rig drilling rod soon |
-
2020
- 2020-12-28 CN CN202011578584.2A patent/CN112554808A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201687401U (en) * | 2010-04-16 | 2010-12-29 | 常琦 | Integral drive key sleeve type drill stem of rotary drilling rig |
| CN201908580U (en) * | 2011-02-22 | 2011-07-27 | 王永智 | Large-torque drill rod |
| CN103277053A (en) * | 2013-05-28 | 2013-09-04 | 天津鸿翔工程机械有限公司 | Drill stem with floral tube |
| CN205445500U (en) * | 2015-12-25 | 2016-08-10 | 徐州恒兴金桥机械科技有限公司 | Dig drive key structure of rig drilling rod soon |
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