CN2893126Y - Reinforced drill rod - Google Patents
Reinforced drill rod Download PDFInfo
- Publication number
- CN2893126Y CN2893126Y CN 200620109430 CN200620109430U CN2893126Y CN 2893126 Y CN2893126 Y CN 2893126Y CN 200620109430 CN200620109430 CN 200620109430 CN 200620109430 U CN200620109430 U CN 200620109430U CN 2893126 Y CN2893126 Y CN 2893126Y
- Authority
- CN
- China
- Prior art keywords
- joint
- steel pipe
- male
- female joint
- male joint
- 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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Abstract
The utility model discloses a strengthening drill pipe, which comprises a steel pipe (4), a male joint (5) and a female joint (1), characterized in that: the male joint (5) and the female joint (1) are both provided with an axial through hole, and the front end of the male joint (5) is provided with an outside thread, while the rear end of the female joint (1) is provided with an inside thread that is matched with the outside thread of the male joint (5). The rear end of the male joint (5) and the front end of the female joint (1) are circled into the thread holes at the two ends of the steel pipe (4) in a screw thread connecting way, while the two ends of the steel pipe (4) is connected with the connecting end face on the male joint (5) and the female joint (1) along with the annular welding line (2) in a welding way. The overlapping part of the male joint (5) and the female joint (1) that is circled into the steel pipe is provided with connecting holes (3) that are connected by plug welding. The utility model which can enable the welding line at the drill pipe weld not to be easily ruptured has a high welding intensity and a long service life.
Description
Technical field
The utility model relates to exploring equipment, relates in particular to a kind of drilling rod.
Background technology
At present, general drilling rod is made up of male joint, steel pipe and female joint three parts, and male joint and female joint have axial hole, and the male joint front end has external screw thread, and there is the internal thread that cooperates with the male joint external screw thread female joint rear end.Be welded and fused between male and female joint and the steel pipe.The friction weldering is adopted in this welding usually, but friction soldering equipment costliness, the shortcoming that generally exists drill stem welding seam to rupture.In order to increase weld strength, improve application life, the wall thickness that will increase steel pipe usually increases solder side, certainly will increase the weight of drilling rod like this, increase cost, and use inconvenience, increase operator's labour intensity, increase potential safety hazard especially for the abominable operating environment in down-hole.Chinese patent notification number CN2594443Y, disclose a kind of name and be called the problem that " a kind of Down-the-hole rod " employing interference fit solves the friction weldering, but need special equipment or heater means during interference fit, nonetheless, the booster action that interference fit rose after the drilling rod heat treatment will be had a greatly reduced quality.Interference fit requirement on machining accuracy height, interchangeability is poor, the incompatible batch process in batches.
The utility model content
The purpose of this utility model is to overcome above-mentioned shortcoming and a kind of not easy fracture of drilling rod weld weld seam that can make of providing, weld strength height, the reinforcement drilling rod of long service life.
The purpose of this utility model and solve its technical problem underlying and realize by the following technical solutions: reinforcement drilling rod of the present utility model, by steel pipe, male joint and female joint are formed, male joint and female joint have axially extending bore, the male joint front end has external screw thread, there is the internal thread that cooperates with the male joint external screw thread female joint rear end, male joint rear end and female joint front end are screwed in the screwed hole of steel pipe two ends in the screwed connection mode, steel pipe two ends and male joint, connection end face in the female joint is welded to connect with girth joint, overlaps the position in male joint and the female joint precession steel pipe and is provided with connecting hole.
Adopt plug welding to connect male and female joint and steel pipe in the above-mentioned reinforcement drilling rod, connecting hole.
Adopt connectors such as pin, screw to connect male and female joint and steel pipe in the above-mentioned reinforcement drilling rod, connecting hole.
The present invention compared with prior art because existing radially to be threaded between steel pipe and the pin and box sub, has girth joint to be welded to connect again, add plug welding, thereby torsional strength is higher, has solved drill stem welding seam easy fracture problem.Radially screw thread between the pin and box sub is even also have the welding seam breaking fillet of tool joint pins or female joint can not come off yet.The wall thickness that does not simultaneously need to increase steel pipe increases solder side, strengthens the contact area of end face.Need not expensive friction welding machine again.It is in light weight to have drilling rod, and the torsional strength height is easy to use, the characteristics of long service life.
The specific embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 adopts the structural representation of plug welding for connecting hole.
Mark among the figure:
1, female joint; 2, girth joint; 3, connecting hole; 4, steel pipe; 5, male joint.
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to the specific embodiment, structure, feature and effect thereof according to the reinforcement drilling rod that the utility model proposes, describe in detail as after.
Referring to Fig. 1, strengthen drilling rod, form by steel pipe 4, male joint 5 and female joint 1, male joint 5 and female joint 1 have axially extending bore, male joint 5 front ends have external screw thread, there is the internal thread that cooperates with male joint 5 external screw threads female joint 1 rear end, male joint 5 rear ends and female joint 1 front end are screwed in the steel pipe 4 two ends screwed holes in the screwed connection mode, steel pipe 4 two ends are welded to connect with girth joint 2 with the end face that is connected in male joint 5, the female joint 1, and overlap the position in male joint 5 and the female joint 4 precession steel pipes and are provided with connecting hole 3.
Referring to Fig. 2, adopt plug welding to connect male and female joint and steel pipe 4 in the connecting hole 3.
During use, male joint 5 rear ends and mother connect 1 front end and are screwed in the steel pipe 4 two ends screwed holes with the screw thread connecting mode, steel pipe 4 two ends are connected end face and are welded to connect with girth joint 2 respectively with in male joint 5, the female joint 1, and the connecting hole 3 that overlaps the position in male joint 5 and female joint 1 precession steel pipe 4 carries out plug welding.With the diameter is that Ф 63 * 650mm drilling rod is an example, and steel pipe is selected medium carbon alloy steel for use, and the male and female joint also is a medium carbon alloy steel, joint and steel pipe are through modifier treatment, garden and steel tube inner hole machining screw screw welding outside pin and box sub, and facility plug welding then can guarantee that the commissure can not rupture.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any technical solutions of the utility model content that do not break away from,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.
Claims (4)
1, a kind of reinforcement drilling rod, by steel pipe (4), male joint (5) and female joint (1) are formed, it is characterized in that: male joint (5) and female joint (1) have axially extending bore, male joint (5) front end has external screw thread, there is the internal thread that cooperates with male joint (5) external screw thread female joint (1) rear end, male joint (5) rear end and female joint (1) front end are screwed in the screwed hole of steel pipe (4) two ends in the screwed connection mode, steel pipe (4) two ends and male joint (5), connection end face in the female joint (1) is welded to connect with girth joint (2), overlaps the position in male joint (5) and female joint (4) the precession steel pipe and is provided with connecting hole (3).
2, reinforcement drilling rod as claimed in claim 1 is characterized in that: adopt plug welding to connect male and female joint and steel pipe (4) in the connecting hole (3).
3, reinforcement drilling rod as claimed in claim 1 is characterized in that: adopt pin to connect male and female joint and steel pipe (4) in the connecting hole (3).
4, reinforcement drilling rod as claimed in claim 1 is characterized in that: adopt screw to connect male and female joint and steel pipe (4) in the connecting hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620109430 CN2893126Y (en) | 2006-05-31 | 2006-05-31 | Reinforced drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620109430 CN2893126Y (en) | 2006-05-31 | 2006-05-31 | Reinforced drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2893126Y true CN2893126Y (en) | 2007-04-25 |
Family
ID=38061292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620109430 Expired - Fee Related CN2893126Y (en) | 2006-05-31 | 2006-05-31 | Reinforced drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2893126Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915064A (en) * | 2010-09-14 | 2010-12-15 | 衡阳华菱钢管有限公司 | Bimetal compound pipe |
| EP2489754A3 (en) * | 2011-02-18 | 2013-01-23 | Mitsubishi Materials Corporation | Hollow drilling steel rod and method of manufacturing the same |
| CN109184586A (en) * | 2018-09-19 | 2019-01-11 | 邹城兖矿泰德工贸有限公司 | Steel casts double helix extension bar |
-
2006
- 2006-05-31 CN CN 200620109430 patent/CN2893126Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915064A (en) * | 2010-09-14 | 2010-12-15 | 衡阳华菱钢管有限公司 | Bimetal compound pipe |
| CN101915064B (en) * | 2010-09-14 | 2015-05-20 | 衡阳华菱钢管有限公司 | Bimetal compound pipe |
| EP2489754A3 (en) * | 2011-02-18 | 2013-01-23 | Mitsubishi Materials Corporation | Hollow drilling steel rod and method of manufacturing the same |
| US8430977B2 (en) | 2011-02-18 | 2013-04-30 | Mitsubishi Materials Corporation | Hollow drilling steel rod and method of manufacturing the same |
| CN109184586A (en) * | 2018-09-19 | 2019-01-11 | 邹城兖矿泰德工贸有限公司 | Steel casts double helix extension bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |