CN213017131U - Steel pipe butt joint reducer - Google Patents
Steel pipe butt joint reducer Download PDFInfo
- Publication number
- CN213017131U CN213017131U CN202021711254.1U CN202021711254U CN213017131U CN 213017131 U CN213017131 U CN 213017131U CN 202021711254 U CN202021711254 U CN 202021711254U CN 213017131 U CN213017131 U CN 213017131U
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- steel pipe
- butt joint
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- pipe butt
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Abstract
The utility model provides a steel pipe butt joint reducer, including inscription section, changeover portion and overcoat section, inscription section, changeover portion and overcoat section cavity tubular structure before the end to end links into in proper order, and overcoat section external diameter is greater than inscription section external diameter, and inscription section surface is provided with many protruding muscle. Adopt the technical scheme of the utility model, the inscription section, changeover portion and jacket section coincide each other, the ability that makes steel pipe butt joint concentric reducer bear radial load is whole even, through set up protruding muscle at inscription section surface, when inscription section is connected with the steel pipe, extrude each other with the steel pipe inner wall, thereby the mesh of closely cooperating has been reached, the cooperation clearance has been reduced, make two steel pipe connection back structures more firm reliable, furthermore, protruding muscle appearance profile is pitch arc or wave line at the projection of inscription section axial cross-section, be favorable to increasing the cooperation area with the steel pipe inner wall, corresponding increase frictional resistance, make the steel pipe can not rotate easily, the structural stability after two steel pipes are connected has further been promoted.
Description
Technical Field
The utility model relates to a building engineering technical field especially indicates a steel pipe butt joint reducer.
Background
At present, the present steel pipe all has unified external diameter size and length after making the shaping and leaving warehouse, and in engineering, when steel pipe length is not enough, then need to dock two steel pipes and use, present butt joint reducer is when connecting two steel pipes, one of them steel pipe cup joints in reducer end, reducer end then cup joints in another steel pipe, this kind of connected mode is though nimble, but because the fit clearance between reducer end and the steel pipe is great, two steel pipes shake very greatly after the butt joint, and is unstable, the result of use is relatively poor. In the prior art, the publication numbers are:
the patent document of CN206221855U discloses an elongated cuttable reducer head, which comprises a standard reducer head part and an elongated cuttable straight pipe section, wherein the upper end of the standard reducer head part is connected with the lower end of the elongated cuttable straight pipe section, the standard reducer head part and the elongated cuttable straight pipe section are of an integrated structure, the elongated cuttable straight pipe section is of a straight pipe structure with a constant diameter, the upper part of the standard reducer head part is a reducer pipe, and the lower part of the standard reducer head part is a straight pipe with a constant diameter; by adopting the technical scheme disclosed by the patent document, because the central axes of the two ends of the reducing reducer are not coincident, when two steel pipes are connected, the radial load bearing capacity of the two steel pipes is different, and the stability is poorer.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a steel pipe butt joint reducer.
The utility model discloses a following technical scheme can realize.
The utility model provides a steel pipe butt joint reducer, including inscription section, changeover portion and overcoat section, inscription section, changeover portion and overcoat section cavity tubular structure before the end to end links into in proper order, overcoat section external diameter is greater than inscription section external diameter, inscription section surface is provided with many protruding muscle.
The height of the convex rib is not less than 10% of the wall thickness of the inner connecting section.
The cross section of the convex rib is rectangular, isosceles trapezoid or semicircular.
The plurality of convex ribs are uniformly arranged in an array according to a circumferential array by taking the central axis of the internal connecting section as a rotating center.
The number of the convex ribs is 6 to 10.
The length of the convex rib is not less than 80% of the length of the inner connecting section.
The projection of the outline of the convex rib on the axial section of the inner connecting section is an arc line or a wavy line.
The length of the internal connecting section is not less than 40% of the whole length of the steel pipe butt joint reducer.
The beneficial effects of the utility model reside in that: adopt the technical scheme of the utility model, inscription section, changeover portion and jacket section coincide each other, make the whole ability that bears radial load of steel pipe butt joint reducer, through set up protruding muscle at inscription section surface, when inscription section is connected with the steel pipe, extrude each other with the steel pipe inner wall to reach the mesh of closely cooperating, reduced the fit clearance, make two steel pipe connection back structures more firm reliable, in addition, protruding muscle appearance profile is in the projection of inscription section axial cross-section is pitch arc or wave line, is favorable to increasing the cooperation area with the steel pipe inner wall, and corresponding increase frictional resistance makes the steel pipe can not rotate easily, has further promoted the structural stability after two steel pipe connections.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the connection structure of the inner connection section and the convex rib of the present invention.
In the figure: 1-inner connecting section, 2-transition section, 3-outer sleeve section and 4-convex rib.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 and 2, the utility model provides a steel pipe butt joint reducer, including inscription section 1, changeover portion 2 and overcoat section 3, hollow tubular structure around inscription section 1, changeover portion 2 and overcoat section 3 consecutive end to end become, and 3 external diameters of overcoat section are greater than 1 external diameters of inscription section, and 1 surfaces of inscription section are provided with many protruding muscle 4.
Further, it is preferable that the height of the bead 4 is not less than 10% of the wall thickness of the inner hub 1. The cross section of the convex rib 4 is rectangular, isosceles trapezoid or semicircular. The plurality of convex ribs 4 are uniformly arranged in a circumferential array by taking the central axis of the inscribed section 1 as a rotation center. The number of the convex ribs 4 is 6 to 10. The length of the convex rib 4 is not less than 80% of the length of the inner connecting section 1.
In addition, the projection of the outline of the convex rib 4 on the axial section of the inner connecting section 1 is an arc line or a wavy line. The length of the internal connection section 1 is not less than 40% of the whole length of the butt joint reducer of the steel pipe.
Adopt the technical scheme of the utility model, the inscription section, changeover portion and jacket section coincide each other, the ability that makes steel pipe butt joint concentric reducer bear radial load is whole even, through set up protruding muscle at inscription section surface, when inscription section is connected with the steel pipe, extrude each other with the steel pipe inner wall, thereby the mesh of closely cooperating has been reached, the cooperation clearance has been reduced, make two steel pipe connection back structures more firm reliable, furthermore, protruding muscle appearance profile is pitch arc or wave line at the projection of inscription section axial cross-section, be favorable to increasing the cooperation area with the steel pipe inner wall, corresponding increase frictional resistance, make the steel pipe can not rotate easily, the structural stability after two steel pipes are connected has further been promoted.
Claims (8)
1. The utility model provides a steel pipe butt joint reducer which characterized in that: including inscription section (1), changeover portion (2) and overcoat section (3), hollow tubular structure around inscription section (1), changeover portion (2) and overcoat section (3) end to end in proper order become, overcoat section (3) external diameter is greater than inscription section (1) external diameter, inscription section (1) surface is provided with many protruding muscle (4).
2. The steel pipe butt joint reducer of claim 1, wherein: the height of the convex rib (4) is not less than 10% of the wall thickness of the inner connecting section (1).
3. The steel pipe butt joint reducer of claim 1, wherein: the cross section of the convex rib (4) is rectangular, isosceles trapezoid or semicircular.
4. The steel pipe butt joint reducer of claim 1, wherein: the plurality of convex ribs (4) are uniformly arranged in a circumferential array by taking the central axis of the inner connecting section (1) as a rotating center.
5. The steel pipe butt joint reducer of claim 1, wherein: the number of the convex ribs (4) is 6-10.
6. The steel pipe butt joint reducer of claim 1, wherein: the length of the convex rib (4) is not less than 80% of the length of the inner connecting section (1).
7. The steel pipe butt joint reducer of claim 1, wherein: the projection of the outline of the convex rib (4) on the axial section of the inner connecting section (1) is an arc line or a wavy line.
8. The steel pipe butt joint reducer of claim 1, wherein: the length of the inner connecting section (1) is not less than 40% of the whole length of the steel pipe butt joint reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021711254.1U CN213017131U (en) | 2020-08-17 | 2020-08-17 | Steel pipe butt joint reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021711254.1U CN213017131U (en) | 2020-08-17 | 2020-08-17 | Steel pipe butt joint reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213017131U true CN213017131U (en) | 2021-04-20 |
Family
ID=75465206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021711254.1U Active CN213017131U (en) | 2020-08-17 | 2020-08-17 | Steel pipe butt joint reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213017131U (en) |
-
2020
- 2020-08-17 CN CN202021711254.1U patent/CN213017131U/en active Active
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