CN202580361U - D-shaped embedding helical bellows - Google Patents
D-shaped embedding helical bellows Download PDFInfo
- Publication number
- CN202580361U CN202580361U CN 201220005451 CN201220005451U CN202580361U CN 202580361 U CN202580361 U CN 202580361U CN 201220005451 CN201220005451 CN 201220005451 CN 201220005451 U CN201220005451 U CN 201220005451U CN 202580361 U CN202580361 U CN 202580361U
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- pipe
- shaped
- bellows
- metal pipe
- metal tube
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Abstract
The utility model relates to a D-shaped embedding helical bellows which is capable of not only effectively improving the strength of a large-aperture bellows, but also fundamentally improving the elasticity of the large-aperture bellows. The D-shaped embedding helical bellows comprises an inner pipe, a metal pipe and a strip-shaped groove, wherein the metal pipe winds a pipe body of the inner pipe, the section of the metal pipe is D-shaped, the stripe-shaped groove is pressed in the bottom surface of the D-shaped metal pipe, a plastic strip which is integrated with the wall of the inner pipe is embedded inside the strip-shaped groove, and the surface of the D-shaped metal pipe is covered by a plastic layer. The D-shaped embedding helical bellows has the advantages that the bottom surface of the D-shaped metal pipe contacts the surface of the inner pipe, so that when the D-shaped metal pipe is pressed, pressure on the inner pipe is greatly lowered, and the D-shaped metal pipe is like in an arc bridge structure, so that the bearing capacity is big; the strip-shaped groove in the bottom surface of the D-shaped metal pipe is matched with the inner pipe, not only are the supporting strength and bearing capacity of the inner pipe improved, but also laying does not occur between the inner pipe and the surface of the D-shaped metal pipe, and therefore the whole strength of the bellows is improved.
Description
Technical field
The utility model relates to a kind ofly can not only improve heavy caliber bellows intensity effectively, and can make the elasticity of heavy caliber bellows obtain a kind of D shape helical bellows and the making method that essence improves, and belongs to bellows and makes the field.
Background technique
CN201078525Y, title " socket joint electric smelting jointing type steel band reinforced polyethylene spiral ripple pipe ", it is used to solve the problem of easy seepage of steel band reinforced polyethylene spiral ripple pipe connection interface and poor reliability.Socket joint electric smelting jointing type steel band reinforced polyethylene spiral ripple pipe; Be the metal frame that twines to be fixed on the inner layer polyethylene with outer layer polyethylene; Particularly an end of bellows is provided with socket, and the other end of bellows is provided with bellmouth, imbeds a circle electric heating element on the bellmouth inwall and forms.Adopt this socket joint electric smelting jointing type steel band reinforced polyethylene spiral ripple pipe, can be widely used in the connection construction of plastic tube.Its deficiency: the one, metal frame is the outer structure of taking off, and what form with inner layer polyethylene is that the line face contact, rather than face contacts; Not only plyability is poor; And under the effect of external force, metal frame is prone to take off mobile outward, causes inner layer polyethylene is destroyed; The quality of direct shadow pipe matter, even cause inner layer polyethylene damaged; The 2nd, support strength is low, because metal frame is the outer structure of taking off, outwards move its metal frame both sides of external pressure, not only causes the layering of metal frame and inner layer polyethylene, and cause the direct reduction of inner layer polyethylene intensity; The 3rd, because outer layer polyethylene and metal frame are two kinds of material different, had nothing in common with each other by its coefficient that expands with heat and contract with cold of Influence of Temperature, therefore stratification in use takes place inevitably, cause bellows intensity sharply to descend, bellows caves in.
Summary of the invention
Purpose of design: avoid the deficiency in the background technique, design a kind of heavy caliber bellows that can not only improve effectively and strengthen, and can make the elasticity of heavy caliber bellows obtain the chimeric helical bellows of a kind of D shape that essence improves.
Design proposal: in order to realize above-mentioned purpose of design.The metal tube cross section is the design of D shape, is the major technique characteristic of the utility model.The purpose of doing like this is: because D shape metal tube bottom recesses is that plastic strip that this groove is embedded and inner tubal wall are one, have both played the effect of support limit along the compacting of D shape metal pipe range; Played the effect of wedge again; Guaranteed that interior pipe and D shape metal tube are not stratified, and improved the compressive strength of interior pipe effectively, when D shape metal tube is receiving external force when extruding; D shape metal tube can not be shifted, and has guaranteed reliably compound between D shape metal tube and inner tubal wall.
Technological scheme: a kind of D shape helical bellows; It comprises interior pipe; Metal tube cross section in being wrapped on the pipe pipe shaft is D shape metal tube and D shape metal tube bottom surface is pressed with strip groove, and it is the plastic strip of one that strip groove is embedded with inner tubal wall, and the pipe face of D shape metal tube is covered with plastic layer.
The utility model is compared with background technique, and the one, D shape metal tube bottom surface contacts with the inner tube surface face, when making D shape metal tube pressurized, has greatly alleviated the pressure of internal pipe, and D shape metal tube is just as the arch bridge structure, and bearing capacity is big; The 2nd, because D shape metal tube bottom surface strip groove and interior pipe formation snap fit has not only greatly improved interior pipe support strength and bearing capacity, and guaranteed that interior pipe and D shape metal tube face are not stratified, greatly improved the bulk strength of bellows.
Description of drawings
Fig. 1 is the structural representation of the chimeric helical bellows of D shape.
Fig. 2 is the cross section structure schematic representation of D shape metal tube among Fig. 1.
Embodiment
Embodiment 1: with reference to accompanying drawing 1-2.A kind of D shape helical bellows; Pipe 1 in it comprises; Metal tube 2 cross sections in being wrapped on pipe 1 pipe shaft are D shape metal tube and D shape metal tube bottom surface is pressed with strip groove; Or an above strip groove 4, it is the plastic strip of one that strip groove 4 is embedded with inner tubal wall, the pipe face of D shape metal tube 2 is covered with plastic layer 3.The bottom land of said strip groove 4 is wide, notch is little.Said strip groove 4 is meant D shape metal tube length direction groove.Said D shape metal tube 2 adopts steel band to make.Its making method: adopt the metal tube producer that steel band is processed the semicircle D shape metal tube that the bottom has groove; Adopt the heavy caliber polyolefin winding growth pipe production line of claimant's manufacturing in making bellows, to manage in 1 process then; While make pipe in the bellows, with semicircle D shape pipe be wrapped on the bellows and the ripple tube wall on plastics embed in the groove of semicircle D shape pipe, adopt the heavy caliber polyolefin of claimant's manufacturing to twine at last to increase the pipe production line that molten plastic is compounded in semicircle D shape pipe and go up and formation plastic layer 3 (skin).
What need understand is: the detailed text description though above-mentioned mentality of designing to the utility model is contrasted; But these text descriptions; Just the simple text of the utility model mentality of designing is described, rather than to the restriction of the utility model mentality of designing, any combination that does not exceed the utility model mentality of designing; Increase and modification, all fall in the protection domain of the utility model.
Claims (3)
1. chimeric helical bellows of D shape; It comprises interior pipe; It is characterized in that: the metal tube cross section in being wrapped on the pipe pipe shaft is D shape metal tube and D shape metal tube bottom surface is pressed with strip groove, and it is the plastic strip of one that strip groove is embedded with inner tubal wall, and the pipe face of D shape metal tube is covered with plastic layer.
2. the chimeric helical bellows of D shape according to claim 1, it is characterized in that: the bottom land of said strip groove is wide, notch is little.
3. the chimeric helical bellows of D shape according to claim 1 and 2 is characterized in that: said strip groove is meant D shape metal tube length direction groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220005451 CN202580361U (en) | 2012-01-09 | 2012-01-09 | D-shaped embedding helical bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220005451 CN202580361U (en) | 2012-01-09 | 2012-01-09 | D-shaped embedding helical bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202580361U true CN202580361U (en) | 2012-12-05 |
Family
ID=47249771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220005451 Expired - Fee Related CN202580361U (en) | 2012-01-09 | 2012-01-09 | D-shaped embedding helical bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202580361U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458499A (en) * | 2018-12-28 | 2019-03-12 | 四川亚塑新材料有限公司 | A kind of double-wall corrugated winding pipe of HDPE |
-
2012
- 2012-01-09 CN CN 201220005451 patent/CN202580361U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458499A (en) * | 2018-12-28 | 2019-03-12 | 四川亚塑新材料有限公司 | A kind of double-wall corrugated winding pipe of HDPE |
| CN109458499B (en) * | 2018-12-28 | 2021-03-26 | 四川亚塑新材料有限公司 | HDPE double-wall corrugated winding pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20190109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |