CN209469894U - A kind of trapezoidal circular hole PE winding bellows and profile - Google Patents
A kind of trapezoidal circular hole PE winding bellows and profile Download PDFInfo
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- CN209469894U CN209469894U CN201821352399.XU CN201821352399U CN209469894U CN 209469894 U CN209469894 U CN 209469894U CN 201821352399 U CN201821352399 U CN 201821352399U CN 209469894 U CN209469894 U CN 209469894U
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- trapezoidal
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Abstract
A kind of trapezoidal circular hole PE winding bellows and profile, the bellows include the matrix made of PE band spiral winding and be helically wound it is adjacent squeeze out PE band clinch profile, profile includes single-wall corrugated pipe and the trapezoidal clad for being coated on single-wall corrugated pipe periphery, this set is conducive to the connection of profile and matrix, this profile the moment of inertia is high, bellows structure is stablized, and can bear the biggish pressure from radial direction, be remarkably improved the ring stiffness of bellows.
Description
Technical field
The utility model relates to municipal bellowss, and in particular to a kind of trapezoidal circular hole PE winding bellows and be used for this
The profile of kind bellows.
Background technique
Helical bellows with reinforcing rib are widely used due to sharing effect and ring stiffness with good pipeclay
In the construction of municipal blow-off line, application No. is CN201611114726.3, date of publication is the patent text on March 8th, 2017
A kind of enhancing carat pipe and its manufacturing method are disclosed in part, pipe shaft includes support tube and internal layer, and the support tube is single wall
Bellows cladding PE material obtains；The internal layer is that the hot winding of PE sheet material obtains；Wherein elasticity has been coated in the PE sheet material
Modulus is higher than the rigid material of PE；Its support tube is placed at the overlapping between PE sheet material.A kind of enhancing carat pipe is additionally provided simultaneously
Manufacturing method.After the utility model has coated high rigidity material in inner layer material, when tubing is pressurized, due to high rigidity material
The rigidity of material is significantly larger than the rigidity of PE material, can achieve the effect that greatly improve ring stiffness.But the ring stiffness of tubing is
Satisfaction needs are all right, if the ring stiffness of tubing is too small, tubing may occur excessive deformation or lateral deflection unstable failure occurs.Instead
It necessarily uses excessive cross sectional moment of inertia, will cause too many with material, cost is excessively high if ring stiffness selects get Tai Gao.?
Although the setting for coating high rigidity material in inner layer material can improve ring stiffness, increases the process of production and then increase
The cost of production；In addition its support tube is placed at the overlapping between PE sheet material, due to its support tube be it is circular, support tube with
The contact area of sheet material is small, and when support tube is under pressure, the pressure being subject to can be transmitted to piece by this small contact surface
The internal layer of material is easy that internal layer is made to generate deformation, and keeps bellows projecting inward to tube wall, to increase the resistance of ripple tube fluid
Power.
Utility model content
To solve problems of the prior art, the utility model provides a kind of trapezoidal circular hole PE winding bellows and type
Material, the bellows and profile of the utility model can further promote the ring stiffness of bellows, and the stable structure of bellows.
In order to achieve the above objectives, the utility model provides a kind of trapezoidal circular hole PE winding bellows, including by PE band spiral shell
It revolves the matrix being entwined and is helically wound the profile on matrix, profile includes single-wall corrugated pipe and is coated on single wall
The trapezoidal clad of bellows.
Arrangement above, the inner and outer surfaces of single-wall corrugated pipe are corrugated, and bendability, flexibility and bearing capacity are equal
It is excellent；The cross sectional moment of inertia of trapezoidal clad is bigger than the cross sectional moment of inertia of round clad, and it is stronger to resist curved ability, therefore
Ring stiffness also can be stronger；The floor space of trapezoidal clad is big, and external pressure suffered by profile can be distributed to by trapezoidal bottom surface
On matrix, matrix local compression can be prevented and deformed.
Further, the single-wall corrugated pipe is PP single-wall corrugated pipe；Trapezoidal clad is the trapezoidal clad of PE.PP rigidity
Good, impact resistance is strong, and the profile structure of this structure is stablized, and can bear the biggish pressure from radial direction, can significantly mention
The ring stiffness of high bellows；It is all the trapezoidal clad of PE material since matrix is formed by the band spiral winding of PE material
An entirety can be mutually fused into matrix, the structure of bellows is more stable.
Further, the trapezoidal clad is isosceles trapezoid clad.Contact of the clad of the above shape with matrix
Area is big, and cross sectional moment of inertia is big, is conducive to the stabilization of bellows structure and the promotion of ring stiffness.
Further, the section of the trapezoidal clad meets relational expression:Wherein a
For trapezoidal upper bottom length；B is trapezoidal bottom length；H is trapezoidal height.This relational expression can further increase rectangle
The cross sectional moment of inertia of clad, so that the cross sectional moment of inertia of trapezoidal clad is greater than the section of round clad in the prior art
The moment of inertia, cross sectional moment of inertia is bigger, and the ability of section resistance to deformation is stronger, and profile is less susceptible to deform, then the ring of bellows is rigid
It spends higher.
In order to achieve the above objectives, the utility model additionally provides a kind of trapezoidal circular hole profile, including single-wall corrugated pipe and packet
Overlay on the trapezoidal clad of single-wall corrugated pipe periphery.
Arrangement above, the inner and outer surfaces of single-wall corrugated pipe are corrugated, and bendability, flexibility and bearing capacity are equal
It is excellent；Trapezoidal clad cross sectional moment of inertia is bigger than circular cross sectional moment of inertia, and it is stronger to resist curved ability, therefore ring stiffness
It also can be stronger；The floor space of trapezoidal clad is big, and external pressure suffered by profile can be distributed on matrix by trapezoidal bottom surface,
It can prevent matrix local compression and deform.
Further, the single-wall corrugated pipe is PP single-wall corrugated pipe；Trapezoidal clad is the trapezoidal clad of PE.PP rigidity
Good, impact resistance is strong, and the profile structure of this structure is stablized, and can bear the biggish pressure from radial direction, can significantly mention
The ring stiffness of high bellows；It is all the trapezoidal clad of PE material since matrix is formed by the band spiral winding of PE material
An entirety can be mutually fused into matrix, the structure of bellows is more stable.
Further, the trapezoidal clad is isosceles trapezoid clad.Contact of the clad of the above shape with matrix
Area is big, and cross sectional moment of inertia is big, is conducive to the stabilization of bellows structure and the promotion of ring stiffness.
Further, the section of the trapezoidal clad meets relational expression:Wherein a
For trapezoidal upper bottom length；B is trapezoidal bottom length；H is trapezoidal height.This relational expression can further increase rectangle
The cross sectional moment of inertia of clad, so that the cross sectional moment of inertia of trapezoidal clad is greater than the section of round clad in the prior art
The moment of inertia, cross sectional moment of inertia is bigger, and the ability of section resistance to deformation is stronger, and profile is less susceptible to deform, then the ring of bellows is rigid
It spends higher.
Detailed description of the invention
Fig. 1 is the cross-sectional view of bellows in the prior art.
Fig. 2 is enlarged drawing at A in Fig. 1.
Fig. 3 is the cross-sectional view of bellows in the utility model.
Fig. 4 is enlarged drawing at B in Fig. 3.
Fig. 5 is that adjacent PE band mutually overlaps the structural schematic diagram for having not gone through and rolling.
Fig. 6 is the trapezoidal clad of the utility model and the round clad the moment of inertia contrast schematic diagram of the prior art.
Specific embodiment
The utility model is described in further details with reference to the accompanying drawings and detailed description.
It is as shown in Figures 3 to 5: a kind of trapezoidal circular hole PE winding bellows, including the base as made of 2 spiral winding of PE band
Body 1 and the profile 3 being helically wound on matrix 1.
PE band 2 includes clinch 21, and adjacent PE band 2 is connected by clinch 21, in the molten state, by the
The pressing of clinch 21 of adjacent PE band 2 is welded together by one pinch roller 6, forms integrated matrix 1, profile 3 is with spiral side
Formula is wrapped at clinch 21.
The profile 3 includes PP single-wall corrugated pipe 31 and the trapezoidal clad 32 of PE for being coated on PP single-wall corrugated pipe periphery,
The trapezoidal clad is that the outer profile of cladding layer cross section is trapezoidal.
The inner and outer surfaces of PP single-wall corrugated pipe 31 are corrugated, and bendability, flexibility and bearing capacity are excellent,
PP is rigidly good, and impact resistance is strong, and the profile structure of this structure is stablized, and the biggish pressure from radial direction can be born, can
Significantly improve the ring stiffness of bellows；The floor space of the trapezoidal clad 32 of PE is big, and external pressure suffered by profile 3 can be by trapezoidal
Bottom surface be distributed on matrix 1,1 local compression of matrix can be prevented and deformed.
When the section of the trapezoidal clad meets relational expression:When, it further increases
The moment of inertia of trapezoidal clad is wrapped so that the cross sectional moment of inertia of the trapezoidal cladding of the clad 32 carat pipe of PE is round than in the prior art
The cross sectional moment of inertia that coating coats carat pipe (structure is as depicted in figs. 1 and 2) is big, and specific verification process is as follows:
As shown in fig. 6, a is trapezoidal upper bottom length；B is trapezoidal bottom length；H is trapezoidal height；DA is trapezoidal
Micro- area of upper taking-up；L is the width of micro- area；Dy is the height of micro- area；L1The triangle formed for trapezoidal waist and upper bottom
Height of the shape vertex to trapezoidal upper bottom；Y is the distance of micro- area for being taken to x-axis, and D is the outer of round clad in the prior art
Diameter；D is the outer diameter of carat pipe；ΙX ladderFor the moment of inertia of trapezoidal opposite x-axis；ΙZ ladderFor the moment of inertia of trapezoidal opposite z-axis；ΙZ carats of pipesFor gram
The moment of inertia of the trombone slide with respect to z-axis；ΙZ ladder-carat pipeThe moment of inertia for the trapezoidal clad being coated on carat pipe；ΙZ circle-carat pipeIt is existing
The moment of inertia of the round clad on carat pipe is coated in technology.
It is equal to square of the likelihood ratio according to the area ratio of similar triangles, can obtains:
1. 2. composite type can be obtained with formula
It can be obtained according to the moment of inertia formula for translation of axis:
Separately
According to the moment of inertia principle of stacking on relatively the same axis,
Then
It is known
In the present invention, the height h of trapezoidal clad is equal to the diameter D of round clad in the prior art, and full
Sufficient relational expression:Then
Due toAnd h=D
Then
I.e.
It can be seen that from the conclusion of above-mentioned reasoning when meeting relational expression, the inertia of trapezoidal clad can be further increased
Square, so that the moment of inertia of the trapezoidal clad 32 of the PE being coated on carat pipe is greater than the circle being coated on carat pipe in the prior art
The ability of the moment of inertia of shape clad, trapezoidal 32 resistance to deformation of clad of PE is stronger than the ability of round clad resistance to deformation, type
Material 3 is not easy to deform, and the ring stiffness of bellows is higher.To prevent stress from concentrating and keeping the trapezoidal clad 32 of PE beautiful and safety,
Two rib chamferings that the upper bottom of the trapezoidal clad 32 of PE is intersected with waist, in the intersection of the waist and matrix 1 of the trapezoidal clad 32 of PE
Place's setting arc transition.
It is as shown in Figures 3 to 5: a kind of trapezoidal circular hole profile, including PP single-wall corrugated pipe 31 and it is coated on PP single wall ripple
The trapezoidal clad 32 of PE of 31 periphery of pipe.
The inner and outer surfaces of PP single-wall corrugated pipe 31 are corrugated, and bendability, flexibility and bearing capacity are excellent,
PP is rigidly good, and impact resistance is strong, and the profile structure of this structure is stablized, and the biggish pressure from radial direction can be born, can
Significantly improve the ring stiffness of bellows；The floor space of the trapezoidal clad 32 of PE is big, and external pressure suffered by profile 3 can be by trapezoidal
Bottom surface be distributed on matrix 1,1 local compression of matrix can be prevented and deformed.
When the section of the trapezoidal clad meets relational expression:When, it further increases
The moment of inertia of trapezoidal clad is wrapped so that the cross sectional moment of inertia of the trapezoidal cladding of the clad 32 carat pipe of PE is round than in the prior art
The cross sectional moment of inertia that coating coats carat pipe (structure is as depicted in figs. 1 and 2) is big, and specific verification process is as follows:
As shown in fig. 6, a is trapezoidal upper bottom length；B is trapezoidal bottom length；H is trapezoidal height；DA is trapezoidal
Micro- area of upper taking-up；L is the width of micro- area；Dy is the height of micro- area；L1The triangle formed for trapezoidal waist and upper bottom
Height of the shape vertex to trapezoidal upper bottom；Y is the distance of micro- area for being taken to x-axis, and D is the outer of round clad in the prior art
Diameter；D is the outer diameter of carat pipe；ΙX ladderFor the moment of inertia of trapezoidal opposite x-axis；ΙZ ladderFor the moment of inertia of trapezoidal opposite z-axis；ΙZ carats of pipesFor gram
The moment of inertia of the trombone slide with respect to z-axis；ΙZ ladder-carat pipeThe moment of inertia for the trapezoidal clad being coated on carat pipe；ΙZ circle-carat pipeIt is existing
The moment of inertia of the round clad on carat pipe is coated in technology.
It is equal to square of the likelihood ratio according to the area ratio of similar triangles, can obtains:
1. 2. composite type can be obtained with formula
It can be obtained according to the moment of inertia formula for translation of axis:
Separately
According to the moment of inertia principle of stacking on relatively the same axis,
Then
It is known
In the present invention, the height h of trapezoidal clad is equal to the diameter D of round clad in the prior art, and full
Sufficient relational expression:
Due toAnd h=D
Then
I.e.
It can be seen that from the conclusion of above-mentioned reasoning when meeting relational expression, the inertia of trapezoidal clad can be further increased
Square, so that the moment of inertia of the trapezoidal clad 32 of the PE being coated on carat pipe is greater than the circle being coated on carat pipe in the prior art
The ability of the moment of inertia of shape clad, trapezoidal 32 resistance to deformation of clad of PE is stronger than the ability of round clad resistance to deformation, type
Material 3 is not easy to deform, and the ring stiffness of bellows is higher.
Claims (8)
1. a kind of trapezoidal circular hole PE winds bellows, including the matrix as made of PE band spiral winding and it is helically wound
Profile on matrix, it is characterised in that: the profile include single-wall corrugated pipe and be coated on single-wall corrugated pipe periphery it is trapezoidal
Clad.
2. a kind of trapezoidal circular hole PE according to claim 1 winds bellows, it is characterised in that: the single-wall corrugated pipe is
PP single-wall corrugated pipe；The trapezoidal clad is the trapezoidal clad of PE.
3. a kind of trapezoidal circular hole PE according to claim 1 winds bellows, it is characterised in that: the trapezoidal clad is
Isosceles trapezoid clad.
4. a kind of trapezoidal circular hole PE according to claim 1 winds bellows, it is characterised in that: the trapezoidal clad
Section meets relational expression:Wherein a is trapezoidal upper bottom length；B is trapezoidal bottom length；
H is trapezoidal height.
5. a kind of trapezoidal circular hole profile, it is characterised in that: including single-wall corrugated pipe and be coated on the trapezoidal of single-wall corrugated pipe periphery
Clad.
6. a kind of trapezoidal circular hole profile according to claim 5, it is characterised in that: the single-wall corrugated pipe is PP single wall wave
Line pipe；The trapezoidal clad is the trapezoidal clad of PE.
7. a kind of trapezoidal circular hole profile according to claim 5, it is characterised in that: the trapezoidal clad is isosceles trapezoid
Clad.
8. a kind of trapezoidal circular hole profile according to claim 5, it is characterised in that: the section of the trapezoidal clad meets
Relational expression:Wherein a is trapezoidal upper bottom length；B is trapezoidal bottom length；H is trapezoidal
Height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821352399.XU CN209469894U (en) | 2018-08-21 | 2018-08-21 | A kind of trapezoidal circular hole PE winding bellows and profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821352399.XU CN209469894U (en) | 2018-08-21 | 2018-08-21 | A kind of trapezoidal circular hole PE winding bellows and profile |
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| Publication Number | Publication Date |
|---|---|
| CN209469894U true CN209469894U (en) | 2019-10-08 |
Family
ID=68085423
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821352399.XU Active CN209469894U (en) | 2018-08-21 | 2018-08-21 | A kind of trapezoidal circular hole PE winding bellows and profile |
Country Status (1)
| Country | Link |
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| CN (1) | CN209469894U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268584A (en) * | 2018-08-21 | 2019-01-25 | 广东统塑管业有限公司 | A kind of trapezoidal circular hole PE winding bellows, profile and production method |
| CN111120742A (en) * | 2020-01-10 | 2020-05-08 | 青岛永科机械科技有限公司 | Co-extrusion fusion type thermal-state winding structure wall pipe |
-
2018
- 2018-08-21 CN CN201821352399.XU patent/CN209469894U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268584A (en) * | 2018-08-21 | 2019-01-25 | 广东统塑管业有限公司 | A kind of trapezoidal circular hole PE winding bellows, profile and production method |
| CN109268584B (en) * | 2018-08-21 | 2023-10-31 | 广东统塑管业有限公司 | Trapezoid round hole PE winding corrugated pipe, profile and production method |
| CN111120742A (en) * | 2020-01-10 | 2020-05-08 | 青岛永科机械科技有限公司 | Co-extrusion fusion type thermal-state winding structure wall pipe |
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