CN213542042U - Special-shaped steel pipe with excellent mechanical property - Google Patents
Special-shaped steel pipe with excellent mechanical property Download PDFInfo
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- CN213542042U CN213542042U CN202022615313.1U CN202022615313U CN213542042U CN 213542042 U CN213542042 U CN 213542042U CN 202022615313 U CN202022615313 U CN 202022615313U CN 213542042 U CN213542042 U CN 213542042U
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Abstract
The utility model discloses an abnormal shape steel pipe with good mechanical properties belongs to abnormal shape steel pipe field, its technical scheme main points are that the cross-section of abnormal shape steel pipe is first arc line section, first straightway, the second straightway, the third straightway, the fourth straightway, the fifth straightway, the sixth straightway, the seventh straightway, the eighth straightway, the ninth straightway, tenth straightway and eleventh straightway connect gradually and form enclosed construction, wherein first straightway and second straightway constitute the step, fifth straightway and sixth straightway constitute the step, the eighth straightway, the ninth straightway, tenth straightway and eleventh straightway constitute broken line section, the utility model has the advantages of outstanding mechanical properties has, increase of service life all.
Description
Technical Field
The utility model relates to a heterotypic steel pipe field, in particular to heterotypic steel pipe with good mechanical properties.
Background
At present, the application of the special-shaped steel pipe is more and more emphasized by people, and the special-shaped steel pipe is widely applied to the industries of vehicles, ships, agricultural machinery, engineering machinery, textile machinery, food machinery, municipal administration, buildings and the like. And the number of places where the special-shaped pipes are used in waiting halls of various engineering machines is increasing. The special-shaped steel pipe is formed by bending a cold-bending formed closed section in a cold state, so that the special-shaped steel pipe has the advantages of energy conservation, metal material conservation, convenience in construction, attractive appearance and the like, is more substituted for angle steel, channel steel, I-shaped steel and round pipes in recent years, and is widely applied to various building structures and mechanical facilities.
The appearance of an early building is simple, the design forms of straight lines and right angles are adopted mostly, so traditional square steel pipes are mostly used, but the progress of the times and the progress of aesthetic design concepts are that the framework structure of the building is formed by welding large-scale square pipes, round pipes and the like gradually, but the appearance of the traditional square steel pipes is not adaptive, the mechanical properties such as torsion resistance, impact resistance and the like are poor, the use requirements cannot be met, and the service life is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heterotypic steel pipe with good mechanical properties, its advantage lies in having outstanding mechanical properties, increase of service life all.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a section of the special-shaped steel pipe is formed by sequentially connecting a first arc line section, a first straight line section, a second straight line section, a third straight line section, a fourth straight line section, a fifth straight line section, a sixth straight line section, a seventh straight line section, an eighth straight line section, a ninth straight line section, a tenth straight line section and an eleventh straight line section to form a closed structure, wherein the first straight line section and the second straight line section form a step, the fifth straight line section and the sixth straight line section form a step, and the eighth straight line section, the ninth straight line section, the tenth straight line section and the eleventh straight line section form a broken line section.
Further, an included angle between the first straight line segment and the second straight line segment is 90 degrees; and the included angle between the fifth straight line segment and the sixth straight line segment is 90 degrees.
Further, the central angle corresponding to the first arc segment is 90 °.
Further, the first straight line segment and the seventh straight line segment are parallel to each other, and the second straight line segment and the sixth straight line segment are parallel to each other.
Furthermore, circular arc transition is adopted among all the straight line sections, and the radius of a fillet of the circular arc transition is 2 mm.
Further, the outer wall and the inner wall of the special-shaped steel pipe are plated with chrome.
To sum up, the utility model discloses following beneficial effect has:
1. the combination of the arc line segment and the straight line segment is agreed, so that the structure stability is good, the deformation is avoided, the service life is prolonged, and the aesthetic feeling is achieved;
2. the transition position adopts arc transition, so that the fracture caused by stress concentration of the tip is reduced, and the service life of the special pipe is prolonged;
3. the outer wall and the inner wall are plated with chrome, so that the antirust performance of the special-shaped steel pipe is improved.
Drawings
FIG. 1 is a schematic view of a deformed steel pipe having excellent mechanical properties.
In the figure, 1, a first arc segment; 2. a first straight line segment; 3. a second straight line segment; 4. a third straight line segment; 5. a fourth straight line segment; 6. a fifth straight line segment; 7. a sixth straight line segment; 8. a seventh straight line segment; 9. an eighth straight line segment; 10. a ninth straight line segment; 11. a tenth straight line segment; 12. the eleventh straight line.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example (b): a special-shaped steel pipe with excellent mechanical properties is shown in figure 1, and the section of the special-shaped steel pipe is formed by sequentially connecting a first arc line section 1, a first straight line section 2, a second straight line section 3, a third straight line section 4, a fourth straight line section 5, a fifth straight line section 6, a sixth straight line section 7, a seventh straight line section 8, an eighth straight line section 9, a ninth straight line section 10, a tenth straight line section 11 and an eleventh straight line section 12 to form a closed structure. The raw material of the special-shaped steel pipe is preferably alloy structural steel 12Cr1MoV or 16CrNi 5W. The composite material contains trace alloy elements, has good structural strength and stability, and is beneficial to prolonging the service life of the pipe fitting.
Wherein the corresponding central angle of the first arc segment 1 is 90 deg. The first straight line segment 2 and the seventh straight line segment 8 are parallel to each other, and the second straight line segment 3 and the sixth straight line segment 7 are parallel to each other.
The first straight line section 2 and the second straight line section 3 form a step, and the included angle between the first straight line section 2 and the second straight line section 3 is 90 degrees; the fifth straight line segment 6 and the sixth straight line segment 7 form a step, and the included angle between the fifth straight line segment 6 and the sixth straight line segment is 90 degrees. The pipe fitting is convenient to be matched with the shapes of other parts, and the space utilization rate is improved.
The eighth straight line segment 9, the ninth straight line segment 10, the tenth straight line segment 11 and the eleventh straight line segment 12 form a broken line segment. The surface area of the pipe fitting is increased, and an installation position is provided for connecting other parts subsequently. And meanwhile, compared with the traditional square tube, the square tube is more attractive.
And circular arc transition is formed among all the straight line sections, and the radius of a fillet of the circular arc transition is 2 mm. In order to avoid the appearance of a tip at the transition position, the condition that the stress concentration at the transition position causes fracture is reduced, and the service life of the pipe fitting is further prolonged.
And chromium plating is carried out on the upper outer wall and the inner wall of the special-shaped steel pipe. A layer of compact passive film is formed on the pipe fitting, the passive film has good wear resistance, and meanwhile, the pipe fitting is prevented from directly contacting with air, so that the antirust performance is improved.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (6)
1. A heterotypic steel pipe with good mechanical properties which characterized in that: the cross section of the special-shaped steel pipe is a first arc line section (1), a first straight line section (2), a second straight line section (3), a third straight line section (4), a fourth straight line section (5), a fifth straight line section (6), a sixth straight line section (7), a seventh straight line section (8), an eighth straight line section (9), a ninth straight line section (10), a tenth straight line section (11) and an eleventh straight line section (12) are sequentially connected to form a closed structure, wherein the first straight line section (2) and the second straight line section (3) form a step, the fifth straight line section (6) and the sixth straight line section (7) form a step, the eighth straight line section (9), the ninth straight line section (10), the tenth straight line section (11) and the eleventh straight line section (12) form a broken line section.
2. The special-shaped steel pipe with excellent mechanical properties as claimed in claim 1, wherein: the included angle between the first straight line segment (2) and the second straight line segment (3) is 90 degrees; the included angle between the fifth straight line segment (6) and the sixth straight line segment is 90 degrees.
3. The special-shaped steel pipe with excellent mechanical properties as claimed in claim 1, wherein: the central angle corresponding to the first arc line segment (1) is 90 degrees.
4. The special-shaped steel pipe with excellent mechanical properties as claimed in claim 1, wherein: the first straight line segment (2) and the seventh straight line segment (8) are parallel to each other, and the second straight line segment (3) and the sixth straight line segment (7) are parallel to each other.
5. The special-shaped steel pipe with excellent mechanical properties as claimed in claim 1, wherein: and circular arc transition is formed among all the straight line sections, and the radius of a fillet of the circular arc transition is 2 mm.
6. The special-shaped steel pipe with excellent mechanical properties as claimed in claim 1, wherein: and chromium plating is carried out on the upper outer wall and the inner wall of the special-shaped steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022615313.1U CN213542042U (en) | 2020-11-12 | 2020-11-12 | Special-shaped steel pipe with excellent mechanical property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022615313.1U CN213542042U (en) | 2020-11-12 | 2020-11-12 | Special-shaped steel pipe with excellent mechanical property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213542042U true CN213542042U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022615313.1U Active CN213542042U (en) | 2020-11-12 | 2020-11-12 | Special-shaped steel pipe with excellent mechanical property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213542042U (en) |
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2020
- 2020-11-12 CN CN202022615313.1U patent/CN213542042U/en active Active
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