JPH0466483U - - Google Patents
Info
- Publication number
- JPH0466483U JPH0466483U JP10950490U JP10950490U JPH0466483U JP H0466483 U JPH0466483 U JP H0466483U JP 10950490 U JP10950490 U JP 10950490U JP 10950490 U JP10950490 U JP 10950490U JP H0466483 U JPH0466483 U JP H0466483U
- Authority
- JP
- Japan
- Prior art keywords
- threads
- bottoms
- pipes
- deeper
- utility
- 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
- 238000005553 drilling Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
Landscapes
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Description
第１図は本考案のめねじの断面図、第２図は本
考案の作用の説明図で、ａは従来例、ｂは本考案
例、イはねじ山の部分断面図、ロは荷重条件の説
明図、第３図はねじ山荷重分担−ねじ山番号の図
表、第４図は従来例の説明図、第５図、第６図は
曲げ荷重−破壊までの繰り返し数の図表である。
Fig. 1 is a cross-sectional view of the female thread of the present invention, Fig. 2 is an explanatory diagram of the action of the present invention, where a is a conventional example, b is an example of the present invention, a is a partial cross-sectional view of the thread, and b is a loading condition. FIG. 3 is a diagram of thread load distribution vs. thread number, FIG. 4 is an explanatory diagram of a conventional example, and FIGS. 5 and 6 are a diagram of bending load vs. number of repetitions until failure.
Claims (1)
先端側に位置する単数以上のねじ底を他のねじ底
に比べ深くしたことを特徴とする耐疲労特性の優
れた石油掘削管用ねじ継手。 A threaded joint for oil drilling pipes with excellent fatigue resistance, characterized in that the bottoms of one or more threads located on the tip side of the female threads of the tapered threads that connect opposing pipes are deeper than the bottoms of other threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10950490U JPH0466483U (en) | 1990-10-19 | 1990-10-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10950490U JPH0466483U (en) | 1990-10-19 | 1990-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0466483U true JPH0466483U (en) | 1992-06-11 |
Family
ID=31856712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10950490U Pending JPH0466483U (en) | 1990-10-19 | 1990-10-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0466483U (en) |
-
1990
- 1990-10-19 JP JP10950490U patent/JPH0466483U/ja active Pending
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