CN107839993A - A kind of external screw thread protective cap - Google Patents
A kind of external screw thread protective cap Download PDFInfo
- Publication number
- CN107839993A CN107839993A CN201711067515.3A CN201711067515A CN107839993A CN 107839993 A CN107839993 A CN 107839993A CN 201711067515 A CN201711067515 A CN 201711067515A CN 107839993 A CN107839993 A CN 107839993A
- Authority
- CN
- China
- Prior art keywords
- supporter
- connector
- internal thread
- inwall
- changeover portion
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/005—Protection of pipes or objects of similar shape against external or internal damage or wear specially adapted for the ends of pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D59/00—Plugs, sleeves, caps, or like rigid or semi-rigid elements for protecting parts of articles or for bundling articles, e.g. protectors for screw-threads, end caps for tubes or for bundling rod-shaped articles
- B65D59/06—Caps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Buffer Packaging (AREA)
Abstract
A kind of external screw thread protective cap; protection for petroleum casing pipe and all kinds of pipe ends; supporter including steel; supporter one end is provided with dismounting groove, and the other end relative with dismounting groove is provided with plastic connecting body, and connector is fixed together using injection molding manner with supporter; the connector bottom opening forms cavity; connector inwall is provided with internal thread close to one section of supporter, be changeover portion close to one section of cavities open, and the ratio between described internal thread and changeover portion is 4/1~3/1；Connector progressively outwards expands from internal thread one end to bottom opening, the diameter of the openend of bottom is more than top, and inwall is formed angle α with longitudinal vertical line, and the angle is 35 °；Described changeover portion inwall is provided with convex positioning body.Beneficial effect is, after this programme, not only supporter serves good supporting role to cap body, improves bulk strength, and convenient disassembly.
Description
Technical field
Present invention is mainly used for the protection of petroleum casing pipe and all kinds of pipe ends, protective cap is combined well with steel pipe,
Avoid loosening.
Background technology
Steel pipe easily causes damage in transportation to pipe end external screw thread, in order to be protected to tube head external screw thread,
Typically pipe cap, namely protector are set with pipe end.Past mostly uses all steel pipe cap, although durable, machining accuracy
It is required that it is high, otherwise it can not support the use.And the big cost of weight is high, in-convenience in use.
The content of the invention
The present invention is precisely in order to solve the above problems, there is provided a kind of external screw thread protective cap, steel pipe end surface is effectively protected,
And it is easy to remove.
In order to achieve the above object, the present invention adopts the technical scheme that：
A kind of external screw thread protective cap, it is characterized in that：Supporter including steel, supporter one end is provided with dismounting groove, with tearing open
The relative other end of tankage is provided with plastic connecting body, and connector is fixed together using injection molding manner with supporter, the connector
Bottom opening forms cavity, and connector inwall is provided with internal thread close to one section of supporter, and close one section of cavities open is transition
Section, the ratio between described internal thread and changeover portion are 4/1~3/1；Connector from internal thread one end to bottom opening progressively
Outwards expand, the diameter of the openend of bottom is more than top, and inwall is formed angle α with longitudinal vertical line, the angle is 3-
5°；Described changeover portion inwall is provided with convex positioning body.
Described positioning body uses end as semicircular convex shape, and its spacing is the distance of two screw thread teeth, and
And the cross-sectional diameter of any positioning body end is all higher than bottommost internal thread teeth end cross-sectional diameter.
The invention has the advantages that after using the present invention program, not only supporter serves good support to cap body
Effect, improves bulk strength, and convenient disassembly.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
In figure：1. dismounting groove；2. supporter；3. connector；4. internal thread；5. positioning body.
Embodiment
From accompanying drawing 1, the present invention includes the supporter 2 of steel, and the one end of supporter 2 is provided with dismounting groove 1, with dismounting groove 1
The relative other end is provided with plastic connecting body 3, and the bottom opening of connector 3 forms cavity, and the inwall of connector 3 is close to supporter 2
One section be provided with internal thread 4, close to one section of cavities open be changeover portion, the ratio between described internal thread 4 and changeover portion is
4/1~3/1.The connector 3 of the present invention is fixed together using injection molding manner with supporter 2, and connector 3 is overall to use plastics material
Material, it is in light weight, plasticity is big, after setting internal thread 4 in it, it can be very good to be connected with steel pipe internal thread.In order to steel pipe external screw thread
Preferably linking, easy disassembly, connector 3 of the present invention progressively outwards expand from the one end of internal thread 4 to bottom opening, make bottom
The diameter of openend is more than top, and inwall is formed angle α with longitudinal vertical line, and the angle is 3-5 °.Meanwhile open at one end mistake
Cross section and be not provided with internal thread, and be provided with positioning body 5.
Positioning body 5 of the present invention uses end as semicircular convex shape, and its spacing is the distance of two screw thread teeth, and
And end cross is all higher than bottommost internal thread 4 less than bottommost teeth height, i.e., the cross-sectional diameter of any positioning body end
Teeth end cross-sectional diameter.When this structure setting installs protective cap, good positioning action is played to protective cap, makes it
Installation is more prone to.
Claims (2)
1. a kind of external screw thread protective cap, it is characterized in that：Supporter including steel, supporter one end is provided with dismounting groove, with dismounting
The relative other end of groove is provided with plastic connecting body, and connector is fixed together using injection molding manner with supporter, the connector bottom
Portion opening forms cavity, and connector inwall is provided with internal thread close to one section of supporter, and close one section of cavities open is changeover portion,
Ratio between described internal thread and changeover portion is 4/1~3/1；Connector is progressively outside from internal thread one end to bottom opening
Expand, the diameter of the openend of bottom is more than top, and inwall is formed angle α with longitudinal vertical line, the angle is 3-5 °；Institute
The changeover portion inwall stated is provided with convex positioning body.
2. external screw thread protective cap according to claim 1, it is characterized in that：Described positioning body uses end to be semicircular
Convex shape, its spacing is the distance of two screw thread teeth, and the cross-sectional diameter of any positioning body end is all higher than most bottom
Portion's internal thread teeth end cross-sectional diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711067515.3A CN107839993A (en) | 2017-11-03 | 2017-11-03 | A kind of external screw thread protective cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711067515.3A CN107839993A (en) | 2017-11-03 | 2017-11-03 | A kind of external screw thread protective cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107839993A true CN107839993A (en) | 2018-03-27 |
Family
ID=61681350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711067515.3A Pending CN107839993A (en) | 2017-11-03 | 2017-11-03 | A kind of external screw thread protective cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107839993A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112678336A (en) * | 2020-12-18 | 2021-04-20 | 中国二十冶集团有限公司 | Protective cap of net rack rod piece high-strength bolt |
-
2017
- 2017-11-03 CN CN201711067515.3A patent/CN107839993A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112678336A (en) * | 2020-12-18 | 2021-04-20 | 中国二十冶集团有限公司 | Protective cap of net rack rod piece high-strength bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180327 |