CN203147249U - Outwardly-circular-but-inwardly-flat oval special-shaped seamless steel pipe - Google Patents
Outwardly-circular-but-inwardly-flat oval special-shaped seamless steel pipe Download PDFInfo
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- CN203147249U CN203147249U CN 201320072168 CN201320072168U CN203147249U CN 203147249 U CN203147249 U CN 203147249U CN 201320072168 CN201320072168 CN 201320072168 CN 201320072168 U CN201320072168 U CN 201320072168U CN 203147249 U CN203147249 U CN 203147249U
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- steel pipe
- flat oval
- seamless steel
- oval shape
- shaped seamless
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Abstract
The utility model discloses an outwardly-circular-but-inwardly-flat oval special-shaped seamless steel pipe which comprises a circular outer surface and a flat oval inner hole. The outwardly-circular-but-inwardly-flat oval special-shaped seamless steel pipe has the advantages that the steel pipe is provided with the flat oval inner hole, the perimeter of the inner hole is longer in the condition of the equal inner hole section area, so that the steel pipe can dissipate heat easily; and meanwhile a pin is not needed for positioning when the steel pipe is mutually connected with an outer flat oval rod, so that the steel pipe is small in local stress and reliable to use.
Description
Technical field
The utility model relates to a kind of special-shaped seamless steel pipe, more precisely flat oval shape special-shaped seamless steel pipe in a kind of cylindrical.
Background technique
Steel pipe is to have the rectangular steel that hollow section, periphery do not have seam, and steel pipe has hollow section, and is a large amount of as the pipelines of carrying fluid, as the pipeline of transfer oil, rock gas, coal gas, water and some solid material etc.Solid steel such as steel pipe round steel are compared, when the bending resistance twisting strength was identical, weight was lighter, was a kind of economic cross-section steel, be widely used in manufacturing structure spare and mechanical parts, as steel scaffold of using in oil drill rocker, truck drive shaft, bicycle frame and the construction etc.But steel pipe also has certain narrow limitation, as under the long-pending identical situation of inner hole section, the girth minimum of endoporus, heat dissipation rate is the slowest, perhaps when rod member and steel pipe interconnect, must use device fixed beam and steel pipes such as pin, its its can not relatively rotate, thereby make the local stress that produces excessive, it is unreliable to use.
The model utility content
The utility model mainly is to solve the existing in prior technology technical problem, thereby provide a kind of flat oval shape endoporus that has, waiting under the long-pending situation of inner hole section, the endoporus girth is longer, heat radiation easily when interconnecting with outside flat oval shape rod member simultaneously, does not need the fixing device of pin, localized stress is less, flat oval shape special-shaped seamless steel pipe in the service-strong cylindrical.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
Flat oval shape special-shaped seamless steel pipe in a kind of cylindrical comprises a rounded outer surface, and flat oval shape special-shaped seamless steel pipe also comprises a flat oval shape endoporus in the described cylindrical.
As the utility model preferred embodiment, described flat oval shape endoporus comprises two arc junction surfaces and two flat junction surfaces that are arranged in parallel, and the end of described two arc junction surfaces is connected with the end of described flat junction surface.
As the utility model preferred embodiment, described two arc junction surfaces are along flat oval shape special-shaped seamless steel pipe in the described cylindrical, and described two flat junction surfaces are along the axis symmetric arrangement of flat oval shape special-shaped seamless steel pipe in the described cylindrical.
The advantage of flat oval shape special-shaped seamless steel pipe is in the cylindrical of the present utility model: have flat oval shape endoporus, waiting under the long-pending situation of inner hole section, the endoporus girth is longer, heat radiation easily, when interconnecting with outside flat oval shape rod member simultaneously, do not need the fixing device of pin, localized stress is less, uses reliable.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the perspective view of flat oval shape special-shaped seamless steel pipe in the cylindrical of the present utility model;
Fig. 2 is the left view of the interior flat oval shape special-shaped seamless steel pipe of cylindrical among Fig. 1;
Wherein:
1, rounded outer surface;
2, flat oval shape endoporus; 21, arc junction surface; 22, flat junction surface.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.
The advantage of flat oval shape special-shaped seamless steel pipe is in the cylindrical of the present utility model: have flat oval shape endoporus, waiting under the long-pending situation of inner hole section, the endoporus girth is longer, heat radiation easily, when interconnecting with outside flat oval shape rod member simultaneously, do not need the fixing device of pin, localized stress is less, uses reliable.
As shown in Figure 1 and Figure 2, flat oval shape special-shaped seamless steel pipe in a kind of cylindrical comprises a rounded outer surface 1, and flat oval shape special-shaped seamless steel pipe also comprises a flat oval shape endoporus 2 in this cylindrical.
This flat oval shape endoporus 2 comprises two arc junction surfaces 21 and two flat junction surfaces 22 that are arranged in parallel, and the end of these two arc junction surfaces 21 is connected with the end of this flat junction surface 22.
These two arc junction surfaces 21 are along flat oval shape special-shaped seamless steel pipe in this cylindrical, and these two flat junction surfaces 22 are along the axis symmetric arrangement of flat oval shape special-shaped seamless steel pipe in this cylindrical.
Below only with a mode of execution mentality of designing of the present utility model is described, under the situation that system allows, the utility model can expand to external more function module simultaneously, thereby expands its function to greatest extent.
The above only is embodiment of the present utility model, but protection domain of the present utility model is not limited thereto, and any variation or replacement of expecting without creative work all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.
Claims (3)
1. flat oval shape special-shaped seamless steel pipe in the cylindrical comprises a rounded outer surface (1), it is characterized in that, flat oval shape special-shaped seamless steel pipe also comprises a flat oval shape endoporus (2) in the described cylindrical.
2. flat oval shape special-shaped seamless steel pipe in the cylindrical according to claim 1, it is characterized in that, described flat oval shape endoporus (2) comprises two arc junction surfaces (21) and two flat junction surfaces (22) that are arranged in parallel, and the end of described two arc junction surfaces (21) is connected with the end of described flat junction surface (22).
3. flat oval shape special-shaped seamless steel pipe in the cylindrical according to claim 2, it is characterized in that, described two arc junction surfaces (21) are along flat oval shape special-shaped seamless steel pipe in the described cylindrical, and described two flat junction surfaces (22) are along the axis symmetric arrangement of flat oval shape special-shaped seamless steel pipe in the described cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320072168 CN203147249U (en) | 2013-02-08 | 2013-02-08 | Outwardly-circular-but-inwardly-flat oval special-shaped seamless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320072168 CN203147249U (en) | 2013-02-08 | 2013-02-08 | Outwardly-circular-but-inwardly-flat oval special-shaped seamless steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203147249U true CN203147249U (en) | 2013-08-21 |
Family
ID=48974772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320072168 Expired - Fee Related CN203147249U (en) | 2013-02-08 | 2013-02-08 | Outwardly-circular-but-inwardly-flat oval special-shaped seamless steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203147249U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603947A (en) * | 2013-11-11 | 2014-02-26 | 江苏宏宝集团有限公司 | Steel pipe for automobile gear shift |
| CN103604003A (en) * | 2013-11-11 | 2014-02-26 | 江苏宏宝集团有限公司 | Special-shaped steel pipe |
-
2013
- 2013-02-08 CN CN 201320072168 patent/CN203147249U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603947A (en) * | 2013-11-11 | 2014-02-26 | 江苏宏宝集团有限公司 | Steel pipe for automobile gear shift |
| CN103604003A (en) * | 2013-11-11 | 2014-02-26 | 江苏宏宝集团有限公司 | Special-shaped steel pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20140208 |