CN2466077Y - Combined steel-plastic internal thread protector - Google Patents
Combined steel-plastic internal thread protector Download PDFInfo
- Publication number
- CN2466077Y CN2466077Y CN 00267670 CN00267670U CN2466077Y CN 2466077 Y CN2466077 Y CN 2466077Y CN 00267670 CN00267670 CN 00267670 CN 00267670 U CN00267670 U CN 00267670U CN 2466077 Y CN2466077 Y CN 2466077Y
- Authority
- CN
- China
- Prior art keywords
- steel
- utility
- model
- plastic
- plastic body
- 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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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a protector for protecting internal screw threads at the end parts of sleeve pipes of petroleum and various pipes. The utility model is formed by casting a plastic body 1 on the exterior of a steel sleeve 2 which is used as a casing body. The plastic body 1 is cast in the interior, the exterior and the bottom of an annular eave 4 of the steel sleeve 2; external screw threads 5 with high precision can be machined by a numerical control lathe; the bottom center of the steel sleeve 2 is left with a square holes 6 for assembly and disassembly. The utility model has the advantages of favorable integral performance, reasonable structure, convenient assembly and disassembly, strong impact force resistance from outside, and guaranteed screw threads of pipes from damage.
Description
The utility model combined steel plastic internal-thread protector is used for petroleum casing pipe and the externally threaded protection in various tubing end.
The screw thread protection device of present similar products at home and abroad; there are full steel structure, overall plastic structure and steel-plastic structure several; except that full steel structure, all there is a common defective; Here it is because manufacture craft is a single injection-molded; cause the precision of screw thread under the effect of thermoplastic ratio, to produce error, and full steel structure have defectives such as cost height, difficulty of processing be big.
It is inner casing with ready made steel bushing (2) that the purpose that the utility model combined steel is moulded external-thread protector invention provides a kind of; the peripheral plastic body (1) of directly annotating at shell forms one, goes out high-precision screw thread (5) in the periphery of plastic body (1) with lathe in machining then.
The utility model combined steel plastic internal-thread protector; the purpose of invention is to realize like this; the steel bushing (2) that the top is had outer ring eaves (4) peviform is made earlier; go up plastic body (1) peripheral notes of steel bushing (2) then; plastic body during injection moulding (1) must be filled with in the annular eaves (4) on steel bushing (2) top; and form end eaves (3), the bottom along with steel bushing at the bottom of the profile of arc chord angle mutually combine, form one.
The utility model combined steel plastic internal-thread protector; owing to adopt digital controlled lathe; the working accuracy height; the utility model internal-thread protector overall performance is good, and steel-plastic structure is reasonable in design, reaches best fitness; easily processing, cost are low; the top is provided with annular eaves, has strengthened the ability of opposing external impact, guarantees that the body screw thread is without prejudice.
The utility model combined steel plastic internal-thread protector has the following drawings and embodiment to provide:
Fig. 1 is the utility model combined steel plastic internal-thread protector front view band semisectional view.
The utility model combined steel plastic internal-thread protector; be to make steel bushing (2) earlier; and have annular eaves (4) in upper outside; steel bushing wall and junction, bottom are arc chord angle; leave dismounting square hole (6) at the bottom centre position; steel bushing (2) adopts 1 millimeter steel plate to 5 millimeters thick to make; and to be housing with steel bushing (2) annotating plastic body (1) in outside; fill with the fixing end eaves (3) that forms in back in the annular eaves (4) of plastic body (1) with steel bushing (2) top; the bottom is along with the shape of arc chord angle at the bottom of the steel bushing is injection molded; annotate the steel bushing bottom; go out screw thread (5) with lathe in machining at last, formation is combined closely; the steel plastic internal-thread protector of the hard and soft one that possesses.
Claims (2)
1, a kind of compound type plastic-steel screw thread protection device; be to be housing by steel bushing (2); externally annotate and go up plastic body (1) back formation; it is characterized in that: steel bushing (2) top outwards is provided with annular eaves (4); bottom and junction, bottom are arc chord angle; leave dismounting square hole (6) at the bottom centre position, the steel bushing wall thickness is 1 millimeter to 5 millimeters.
2, according to claim (1), combined steel is moulded the screw thread protection device and be it is characterized in that: plastic body (1) top is provided with end eaves (3), and the bottom is circular-arc, and the outside is provided with screw thread (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267670 CN2466077Y (en) | 2000-12-22 | 2000-12-22 | Combined steel-plastic internal thread protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00267670 CN2466077Y (en) | 2000-12-22 | 2000-12-22 | Combined steel-plastic internal thread protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2466077Y true CN2466077Y (en) | 2001-12-19 |
Family
ID=33621433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00267670 Expired - Fee Related CN2466077Y (en) | 2000-12-22 | 2000-12-22 | Combined steel-plastic internal thread protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2466077Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001011A (en) * | 2010-10-14 | 2011-04-06 | 莱芜市数控机床研究所 | Boring-milling head for gantry numerical control machine |
| CN102233975A (en) * | 2010-05-06 | 2011-11-09 | 上海图博可特石油管道涂层有限公司 | Method for protecting thread in process for treating inner surface of double-sealing surface tube used for oil exploitation |
| CN102275679A (en) * | 2011-08-11 | 2011-12-14 | 成都科盛石油科技有限公司 | Protective cover of internal-thread petroleum machinery workpiece |
| WO2014094397A1 (en) * | 2012-12-19 | 2014-06-26 | 无锡市红叶塑钢制品有限公司 | Large-caliber screw thread protector |
-
2000
- 2000-12-22 CN CN 00267670 patent/CN2466077Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233975A (en) * | 2010-05-06 | 2011-11-09 | 上海图博可特石油管道涂层有限公司 | Method for protecting thread in process for treating inner surface of double-sealing surface tube used for oil exploitation |
| CN102233975B (en) * | 2010-05-06 | 2013-05-01 | 上海图博可特石油管道涂层有限公司 | Method for protecting thread in process for treating inner surface of double-sealing surface tube used for oil exploitation |
| CN102001011A (en) * | 2010-10-14 | 2011-04-06 | 莱芜市数控机床研究所 | Boring-milling head for gantry numerical control machine |
| CN102275679A (en) * | 2011-08-11 | 2011-12-14 | 成都科盛石油科技有限公司 | Protective cover of internal-thread petroleum machinery workpiece |
| WO2014094397A1 (en) * | 2012-12-19 | 2014-06-26 | 无锡市红叶塑钢制品有限公司 | Large-caliber screw thread protector |
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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 |