CN202756380U - Small conical degree double circular bead thread structure - Google Patents
Small conical degree double circular bead thread structure Download PDFInfo
- Publication number
- CN202756380U CN202756380U CN 201220396599 CN201220396599U CN202756380U CN 202756380 U CN202756380 U CN 202756380U CN 201220396599 CN201220396599 CN 201220396599 CN 201220396599 U CN201220396599 U CN 201220396599U CN 202756380 U CN202756380 U CN 202756380U
- Authority
- CN
- China
- Prior art keywords
- circular bead
- shoulder
- double circular
- screw thread
- thread structure
- 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 - Lifetime
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Abstract
The utility model discloses a small conical degree double circular bead thread structure. The double circular bead thread structure adopts a V-0.038R triangle-shaped form with a flat top and a round bottom. The conical degree of the double circular bead is 1:10-1:14, the screw pitch of the double circular bead is 3-5 teeth/inch. The small conical degree double circular bead thread structure has the advantages of being simple in structure, reasonable in design, strong in bearing torsion capacity, good in interchangeability, hard to rupture and wide in range of application.
Description
Technical field
The utility model relates to a kind of worm structure, especially relates to the two shoulder worm structures of a kind of Small Taper.
Background technique
At present, used screw thread generally adopts API standard series taper thread on the oil drilling tools, and API standard series thread taper is 1:4:1:5 or 1:6, and pitch is 4 tooth/inches, 5 tooth/inches or 6 tooth/inches.Large according to the worm structure tapering of API standard series manufacturing, bear a little less than the torque capability, processing hydrophthalmia scope is little, interchangeability is poor.Particularly in horizontal well, it is large that drilling tool must bear moment of torsion, and screw thread easily ruptures.For this reason, design is a kind of bears that torque capability is strong, interchangeability good, the worm structure of easy-rupturing is not very important.
The model utility content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, provides a kind of Small Taper two shoulder worm structures, and it is simple in structure, and is reasonable in design, bears torque capability strong, and interchangeability is good, easy-rupturing not, and using scope is wide.
For achieving the above object, the technical solution adopted in the utility model is: the two shoulder worm structures of a kind of Small Taper, it is characterized in that: described pair of shoulder screw thread adopts V-0.038R flat-top round bottom triangle tooth form, the tapering of described pair of shoulder screw thread is 1:10～1:14, and the pitch of described pair of shoulder screw thread is 3～5 tooth/inches.
The two shoulder worm structures of above-mentioned Small Taper, it is characterized in that: the tapering of described pair of shoulder screw thread is 1:12.
The two shoulder worm structures of above-mentioned Small Taper, it is characterized in that: the pitch of described pair of shoulder screw thread is 4 tooth/inches.
The utility model compared with prior art has the following advantages:
1, the utility model is simple in structure, and is reasonable in design.
2, the tapering of of the present utility model pair of shoulder screw thread is 1:10～1:14, two shoulder screw threads adopt V-0.038R flat-top round bottom triangle tooth forms, and the pitch of two shoulder screw threads is 3～5 tooth/inches, and it is strong that this pair of shoulder screw thread bears torque capability, interchangeability is good, not easy-rupturing.
3, the two shoulder worm structures of the utility model are applied on the oil drilling tools, can also make the hydrophthalmia diameter machining range of oil drilling tools large.
4, using scope is wide, and the utility model can not only effectively be applicable in the oil drilling tools, and also can be used in the crossover sub.
Below by drawings and Examples, the utility model is described in further detail.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
The two shoulder worm structures of a kind of Small Taper as shown in Figure 1, described pair of shoulder screw thread adopts V-0.038R flat-top round bottom triangle tooth form, and the tapering of described pair of shoulder screw thread is 1:10～1:14, and the pitch of described pair of shoulder screw thread is 3～5 tooth/inches.
In the present embodiment, preferred, the tapering of described pair of shoulder screw thread is 1:12.
In the present embodiment, preferred, the pitch of described pair of shoulder screw thread is 4 tooth/inches.
In the utility model, the tapering of two shoulder screw threads is 1:10～1:14, and two shoulder screw threads adopt V-0.038R flat-top round bottom triangle tooth form, the pitch of two shoulder screw threads is 3～5 tooth/inches, it is strong that this pair of shoulder screw thread bears torque capability, and interchangeability is good, not easy-rupturing.The two shoulder worm structures of the utility model are applied on the oil drilling tools, can also make the hydrophthalmia diameter machining range of oil drilling tools large.
To sum up, it is strong that the two shoulder worm structures of the utility model have the torque capability of bearing, and easy-rupturing is not used for drilling tool and can makes the large characteristics of drilling tool processing hydrophthalmia scope.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every according to the utility model technical spirit to any simple modification, change and equivalent structure transformation that above embodiment does, all still belong in the protection domain of technical solutions of the utility model.
Claims (3)
1. two shoulder worm structures of a Small Taper, it is characterized in that: described pair of shoulder screw thread adopts V-0.038R flat-top round bottom triangle tooth form, and the tapering of described pair of shoulder screw thread is 1:10～1:14, and the pitch of described pair of shoulder screw thread is 3～5 tooth/inches.
2. according to the two shoulder worm structures of Small Taper claimed in claim 1, it is characterized in that: the tapering of described pair of shoulder screw thread is 1:12.
3. according to claim 1 or the two shoulder worm structures of 2 described Small Tapers, it is characterized in that: the pitch of described pair of shoulder screw thread is 4 tooth/inches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220396599 CN202756380U (en) | 2012-08-12 | 2012-08-12 | Small conical degree double circular bead thread structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220396599 CN202756380U (en) | 2012-08-12 | 2012-08-12 | Small conical degree double circular bead thread structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756380U true CN202756380U (en) | 2013-02-27 |
Family
ID=47735565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220396599 Expired - Lifetime CN202756380U (en) | 2012-08-12 | 2012-08-12 | Small conical degree double circular bead thread structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756380U (en) |
-
2012
- 2012-08-12 CN CN 201220396599 patent/CN202756380U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160516 Address after: 710000 Shaanxi province Xi'an Weiyang Changqing building Patentee after: CNPC CHUANQING DRILLING ENGINEERING CO., LTD. CHANGQING WELL DRILLING GENERAL Co. Patentee after: XI'AN CHANGQING PETROLEUM TOOLING Co.,Ltd. Address before: 710299 Shaanxi city of Xi'an Province Economic and Technological Development Zone Jinghe Industrial Park, Changqing Road No. 3 Patentee before: XI'AN CHANGQING PETROLEUM TOOLING Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |