CN203476238U - Drill rod joint provided with male joint body and female joint body with threads of different conical degrees - Google Patents
Drill rod joint provided with male joint body and female joint body with threads of different conical degrees Download PDFInfo
- Publication number
- CN203476238U CN203476238U CN201320564747.0U CN201320564747U CN203476238U CN 203476238 U CN203476238 U CN 203476238U CN 201320564747 U CN201320564747 U CN 201320564747U CN 203476238 U CN203476238 U CN 203476238U
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- joint body
- joint
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- threads
- drill rod
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Abstract
The utility model relates to the drill rod joint technology, and discloses a drill rod joint provided with a male joint body and a female joint body with threads of different conical degrees. The drill rod joint comprises the male joint body and the female joint body, the male joint body is provided with external threads, and the female joint body is provided with internal threads. The drill rod joint is characterized in that the thread conical degree of the external threads is smaller than that of the internal threads. According to the drill rod joint provided with the male joint body and the female joint body with the threads of different conical degrees, the conical thread structure enables each circle of thread to be evenly stressed and enables the stress concentrated on root portions of the threads of the male joint body to be evenly distributed because of stress deformation when the male joint body and the female joint body are screwed tightly, the service life of the drill rod joint is prolonged, and losses are reduced.
Description
Technical field
The utility model relates to tool joint field, specifically a kind of tool joint with the different screw threads of pin and box sub tapering.
Background technology
Tool joint is divided into male joint and female joint, and male joint and female joint be generally to being welded in the two ends of drilling rod, and the screw thread of drilling rod by male joint and female joint screws and link together.The male joint of traditional oil drill rocker is identical with the thread taper of female joint; in actual use; both screw moment of torsion after screwing can bring deformation conventionally; because both thread tapers are identical, stress mainly concentrates on the root of male joint screw thread, and very limited away from the load that screws threads carry of shoulder; caused stress distribution uneven; easily cause the thread damage at male joint root place, shortened the application life of tool joint, thereby caused larger loss.
Summary of the invention
The purpose of this utility model is to provide a kind of tool joint with the different screw threads of pin and box sub tapering, can overcome the defect of the conventional drill joint described in background technology, makes stress distribution even, extends the application life of tool joint.
The technical solution adopted in the utility model is: a kind of tool joint with the different screw threads of pin and box sub tapering, comprise male joint and female joint, male joint has external screw thread, and female joint has internal thread, it is characterized in that, externally threaded thread taper is less than the thread taper of internal thread.
Preferred: externally threaded thread taper is 1:6.1, the thread taper of internal thread is 1:6.
The utility model improves the identical joint of petroleum drill rod of traditional thread taper, the thread taper of male joint is reduced, after male joint and female joint are screwed due to stress deformation, each encloses screw thread and is subject to uniform stress, the stress equilibrium that originally concentrates on male joint thread root is distributed, in the application life that has extended tool joint, reduced loss.
Accompanying drawing explanation
Fig. 1, structure chart of the present utility model;
Fig. 2, male joint structure chart of the present utility model;
Fig. 3, female joint structure chart of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is further described.
As shown in Figure 1, be structure chart of the present utility model, a kind of tool joint with the different screw threads of pin and box sub tapering, comprises male joint 1 and female joint 2.As shown in Figure 2, be the concrete structure figure of male joint 1, male joint 1 has external screw thread 3 structures.As shown in Figure 3, be the concrete structure figure of female joint 2, female joint 2 has internal thread 4 structures, and the thread taper of external screw thread 3 is less than the thread taper of internal thread 4.
The specific embodiment: in the present embodiment, the thread taper of external screw thread 3 is 1:6.1, the thread taper of internal thread 4 is 1:6.The thread taper of external screw thread 3 is less than the thread taper of internal thread 4, and after external screw thread 3 and internal thread 4 screw, due to stress deformation, each encloses screw thread and is subject to equally distributed stress, has extended the application life of tool joint, has reduced cost.
Claims (2)
1. a tool joint with the different screw threads of pin and box sub tapering, comprise male joint (1) and female joint (2), male joint (1) has external screw thread (3), female joint (2) has internal thread (4), it is characterized in that: the thread taper of external screw thread (3) is less than the thread taper of internal thread (4).
2. the tool joint with the different screw threads of pin and box sub tapering according to claim 1, is characterized in that: the thread taper of external screw thread (3) is 1:6.1, and the thread taper of internal thread (4) is 1:6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320564747.0U CN203476238U (en) | 2013-09-12 | 2013-09-12 | Drill rod joint provided with male joint body and female joint body with threads of different conical degrees |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320564747.0U CN203476238U (en) | 2013-09-12 | 2013-09-12 | Drill rod joint provided with male joint body and female joint body with threads of different conical degrees |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476238U true CN203476238U (en) | 2014-03-12 |
Family
ID=50224585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320564747.0U Expired - Fee Related CN203476238U (en) | 2013-09-12 | 2013-09-12 | Drill rod joint provided with male joint body and female joint body with threads of different conical degrees |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203476238U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735912A (en) * | 2016-05-16 | 2016-07-06 | 陕西太合科技有限公司 | Tool joint linkage structure with different matching tapers |
-
2013
- 2013-09-12 CN CN201320564747.0U patent/CN203476238U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735912A (en) * | 2016-05-16 | 2016-07-06 | 陕西太合科技有限公司 | Tool joint linkage structure with different matching tapers |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20170912 |