CN202493791U - D-shaped opening helix bellows - Google Patents
D-shaped opening helix bellows Download PDFInfo
- Publication number
- CN202493791U CN202493791U CN2012200054493U CN201220005449U CN202493791U CN 202493791 U CN202493791 U CN 202493791U CN 2012200054493 U CN2012200054493 U CN 2012200054493U CN 201220005449 U CN201220005449 U CN 201220005449U CN 202493791 U CN202493791 U CN 202493791U
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- pipe
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- metal tube
- bellows
- metal pipe
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Abstract
The utility model relates to a D-shaped opening helix bellows capable of effectively raising intensity of a large-caliber bellows and fundamentally raising flexibility of the large-caliber bellows. The helix bellows comprises an inner pipe. A metal pipe is wrapped on the inner pipe body. The cross section of the metal pipe is a D-shaped structure of a longitudinal opening at the bottom and the bottom of the D-shaped metal pipe which has longitudinal openings is composite with the inner pipe body. Plastic on the pipe body is embedded in the longitudinal openings at the bottom of the D-shaped metal pipe. The plastic layer is compounded on the surface of the D-shaped metal pipe. The advantages are that the bottom of the D-shaped metal pipe is surfacely contacted with the surface of the inner pipe, thereby greatly mitigating pressure on the inner pipe and greatly raising inner pipe support strength and bearing capability when the D-shaped metal pipe is pressed; and because straight and long through holes embedded with plastic wedges are arranged at the bottom of the D-shaped metal pipe, thereby ensuring reliable compound of the D-shaped metal pipe with the inner pipe wall.
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 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.
The model utility content
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 a kind of D shape opening helical bellows that essence improves.
Design proposal: in order to realize above-mentioned purpose of design.1, the metal tube cross section is the design of D shape, is one of technical characteristics of the utility model.The purpose of doing like this is: because D shape metal tube bottom surface opening is to open along D shape metal pipe range; Be along long through-hole, supported on both sides limit in the middle of the formed pipe bottom surface; And along long through hole with interior pipe compound tense, be used to make molten plastic on the inner tubal wall get into along in the long through-hole and with form snap fit along long through-hole, both played the effect that move spacing support edge; Play the rivet effect of riveted joint D shape metal tube again, played the effect of pipe intensity in strengthening simultaneously again; Secondly, D shape metal tube is when receiving the external force extruding, and D shape metal tube is neither outwards taken off and moved, and also can inwardly not contract and move, and has guaranteed reliably compound between D shape metal tube and inner tubal wall.2, have the design that a plurality of through holes and through hole are inside trumpet shape on the semicircle face of D shape metal tube, be the utility model technical characteristics two.The purpose of doing like this is: because a plurality of through hole inside trumpet shape structures on the semicircle face of D shape metal tube; When molten plastic and the D shape metal semicircle that is furnished with a plurality of inside trumpet shape through holes form compound tense; The plastics of its fusion externally effect of pressure get into down a plurality of inside trumpet shape through holes and formation and have nail and cover continuously connected fastener, and plastic layer and D shape metal tube face that this continuously connected fastener will be compounded on the D shape metal tube face firmly are connected as a single entity.
Technological scheme 1: a kind of D shape opening helical bellows; It comprises interior pipe; It is mutually compound with the pipe shaft of interior pipe that the metal tube cross section of pipe on the pipe shaft is the bottom surface of D shape metal tube of D shape structure and bottom surface opening of bottom surface opening in being wrapped in; Plastics on the pipe shaft embed in the opening of D shape metal tube bottom surface, and plastic layer is compounded on the D shape metal tube face.
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 contacts with the inner tube surface face, greatly improved interior pipe support strength and bearing capacity; The 3rd, because D shape metal tube bottom surface has through hole to be embedded with the plastics wedge along having grown, guaranteed reliably compound between D shape metal tube and inner tubal wall; The 4th, owing to have a plurality of inside trumpet shape holes on the D shape metal tube face and be positioned at plastic layer on the D shape metal tube face at the fusion compound tense; Be injected in a plurality of inside trumpet shapes hole on the D shape metal tube face, form the Plastic Rivets headkerchief; Plastic layer and D shape metal tube face that this Plastic Rivets headkerchief will be positioned on the D shape metal tube face firmly are connected as a single entity, and have guaranteed that bellows in use stratification can not take place.
Description of drawings
Fig. 1 is the structural representation of D shape opening helical bellows.
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 opening helical bellows; Pipe 1 in it comprises; It is mutually compound with the pipe shaft of interior pipe 1 that metal tube 2 cross sections of pipe on 1 pipe shaft are the bottom surface of D shape metal tube of D shape structure and bottom surface opening of bottom surface opening in being wrapped in; Plastics on the pipe shaft embed in the D shape metal tube 2 bottom surface openings, and plastic layer 3 is compounded in 2 of D shape metal tubes and goes up (the pipe face that is D shape metal tube 2 has plastic layer 3 again).It is little 20 millimeters that said D shape metal tube 2 bottom surfaces are A/F.Said opening is meant D shape metal tube length direction opening 4.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 bottom and be the semicircle D shape metal tube of plane of the opening; 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 opening 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 and manage.
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. D shape opening helical bellows; It comprises interior pipe; It is characterized in that: it is mutually compound with the pipe shaft of interior pipe that the metal tube cross section of pipe on the pipe shaft is the bottom surface of D shape metal tube of D shape structure and bottom surface opening of bottom surface opening in being wrapped in; Plastics on the pipe shaft embed in the opening of D shape metal tube bottom surface, and plastic layer is compounded on the D shape metal tube face.
2. D shape opening helical bellows according to claim 1 is characterized in that: it is little 20 millimeters that said D shape metal tube bottom surface is A/F.
3. D shape opening helical bellows according to claim 1 and 2 is characterized in that: said opening is meant D shape metal tube length direction opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200054493U CN202493791U (en) | 2012-01-09 | 2012-01-09 | D-shaped opening helix bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200054493U CN202493791U (en) | 2012-01-09 | 2012-01-09 | D-shaped opening helix bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493791U true CN202493791U (en) | 2012-10-17 |
Family
ID=47000020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200054493U Expired - Fee Related CN202493791U (en) | 2012-01-09 | 2012-01-09 | D-shaped opening helix bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493791U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673960A (en) * | 2016-04-18 | 2016-06-15 | 河北奥特莱防水材料有限公司 | Plastic pipe |
-
2012
- 2012-01-09 CN CN2012200054493U patent/CN202493791U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673960A (en) * | 2016-04-18 | 2016-06-15 | 河北奥特莱防水材料有限公司 | Plastic 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20190109 |