CN202868119U - Helically corrugated tube comprising open type D-shaped convex-concave wedge hole framework - Google Patents
Helically corrugated tube comprising open type D-shaped convex-concave wedge hole framework Download PDFInfo
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- CN202868119U CN202868119U CN 201220005624 CN201220005624U CN202868119U CN 202868119 U CN202868119 U CN 202868119U CN 201220005624 CN201220005624 CN 201220005624 CN 201220005624 U CN201220005624 U CN 201220005624U CN 202868119 U CN202868119 U CN 202868119U
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Abstract
The utility model relates to a helically corrugated tube comprising an open type D-shaped convex-concave wedge hole framework, and the helically corrugated tube can not only effectively enhance the strength of a large-aperture corrugated tube but also enable the elasticity of the large-aperture corrugated tube to be radically improved. The helically corrugated tube comprises an inner tube and D-shaped metal tubes wound on an inner tube body, wherein the bottom surfaces of the D-shaped metal tubes are in an opening structure; the semi-round surfaces of the D-shaped metal tubes are convex-concave surfaces; inner horn-shaped through holes are formed in grooves in the uneven surfaces; and the tube surfaces of the D-shaped metal tubes are coated with plastic layers. The helically corrugated tube has the advantages as follows: firstly, the D-shaped metal tubes are like an arched bridge structure and the bearing capacity is large; secondly, as the bottom surfaces of the D-shaped metal tubes are in surface contact with the surface of the inner tube, the supporting strength and the pressure bearing capability of the inner tube are greatly improved; thirdly, as plastic wedges are embedded into the through holes along the length in the bottom surfaces of the D-shaped metal tubes, the walls of the D-shaped metal tubes and the inner tube are guaranteed to be reliably compounded; and fourth, as plastic wedge screws are formed after cooling in the conical holes in the centers of the grooves in the convex-concave surfaces of the D-shaped metal tubes and used for firmly and integrally connecting the plastic layers on the surfaces of the D-shaped metal tubes with the surfaces of the D-shaped metal tubes, the corrugated tube is guaranteed to be not layered when in use.
Description
Technical field
The utility model relates to a kind of heavy caliber bellows that can not only effectively improve to be strengthened, and can make the elasticity of heavy caliber bellows obtain a kind of helical bellows that is made of the concavo-convex wedge hole on framework of open D shape that essence improves, and belongs to bellows and makes the field.
Background technique
CN201078525Y, title " steel strip enhancement polythene helical bellows of spigot-and-socket electric melting connecting type ", it is used for solving the problem of the easy seepage of steel band reinforced polyethylene spiral ripple pipe connection interface and poor reliability.Steel strip enhancement polythene helical bellows of spigot-and-socket electric melting connecting type, with outer layer polyethylene the metal frame that twines to be fixed on the inner 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 steel strip enhancement polythene helical bellows of spigot-and-socket electric melting connecting type, can be widely used in the connection construction of plastic tube.Its deficiency: the one, metal frame is the outer structure of taking off, what form with inner layer polyethylene is that the line face contacts, rather than face contact, not only plyability is poor, and under the effect of external force, metal frame is easily outer takes off movement, 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, its metal frame both sides of external pressure are outwards mobile, not only cause 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 different materials, be subjected to temperature to affect its coefficient that expands with heat and contract with cold different, so stratification in use occurs 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 effectively improve and strengthen, and can make the elasticity of heavy caliber bellows obtain a kind of helical bellows that is consisted of by the concavo-convex wedge hole on framework of open D shape that essence improves.
Design proposal: in order to realize above-mentioned purpose of design.1, the semicircle face of D shape metal tube is the design of uneven and uneven further groove center inside trumpet shape through hole, is one of technical characteristics of the present utility model.The purpose of doing like this is: when the D shape metal semicircle formation compound tense of molten plastic with the concavo-convex not face face that is furnished with a plurality of inside trumpet shape through holes, the plastics of its melting externally enter under the effect of pressure and enter inside trumpet shape through hole behind the groove and form continuously connected fastener lid with the location upsetting, and plastic layer and D shape metal tube face that this continuously connected fastener lid will be compounded on the D shape metal tube face firmly are connected as a single entity.2, having the design of inside trumpet shape through hole in uneven the groove, is two of technical characteristics of the present utility model.The purpose of doing like this is: because semicircle uneven the further groove central through bore inside trumpet shape structure of D shape metal tube, semicircle face compound tense when molten plastic and uneven D shape metal tube, the tubaeform through hole that the plastics of its melting externally enter uneven groove center under the effect of pressure forms the wedge nail, and plastic layer and D shape metal tube face that this wedge nail will be compounded on the D shape metal tube face firmly are connected as a single entity.3, the metal tube cross section is the design of D shape, is three of technical characteristics of the present 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 that suitable long through-hole, both sides are the support edge in the middle of the formed pipe bottom surface, when along long through hole with the inner tube compound tense, enter along cooperating in the long through-hole and with suitable long through-hole formation clamping for the molten plastic of making on the inner tubal wall, both played the effect of limited support limit displacement, play again the rivet effect of riveted joint D shape metal tube, played again the effect of strengthening inner tube intensity simultaneously; Secondly, D shape metal tube is when being subject to the external force extruding, and D shape metal tube is neither outwards taken off and moved, and also can not move to inside contracting, and has guaranteed reliably compound between D shape metal tube and inner tubal wall.
Technological scheme: a kind of helical bellows that is consisted of by the concavo-convex wedge hole on framework of open D shape, it comprises inner tube, the D shape metal tube bottom surface that is wrapped on the inner tube pipe shaft is on hatch frame and the semicircle face of D shape metal tube for uneven, have inside trumpet shape through hole in uneven the groove, the pipe face of D shape metal tube has plastic layer again.
The utility model is compared with background technique, and the one, D shape metal tube is just as the arch bridge structure, and bearing capacity is large; The 2nd, because D shape metal tube bottom surface and inner tube plane-plane contact have greatly improved inner tube 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, because in uneven the inside trumpet shape hole, groove center of D shape metal tube, form plastics wedge nail after the cooling, plastic layer and D shape metal tube face that this plastics wedge nail 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 occur.
Description of drawings
Fig. 1 is the structural representation of the helical bellows that is made of the concavo-convex wedge hole on framework of open 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 helical bellows that is consisted of by the concavo-convex wedge hole on framework of open D shape, it comprises inner tube 1, being wrapped in D shape metal tube 2 bottom surfaces on inner tube 1 pipe shaft is on opening 4 structures and the D shape metal tube 2 semicircle faces and is uneven, have the area of through hole 5 and through hole 5 close plastic layers in uneven the groove less than being inside trumpet shape near via area, the pipe face of D shape metal tube 2 has plastic layer 3 again.It is little 20 millimeters that described D shape metal tube 2 bottom surfaces are A/F.Described opening refers to D shape metal tube length direction opening 4.Described D shape metal tube 2 adopts steel band to make.
What need to understand is: although above-mentioned to the mentality of designing of the present utility model detailed text description of contrasting; 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 present utility model.
Claims (3)
1. helical bellows that is consisted of by the concavo-convex wedge hole on framework of open D shape, it comprises inner tube (1), it is characterized in that: be wrapped in D shape metal tube (2) bottom surface on inner tube (1) pipe shaft and be on opening (4) structure and the semicircle face of D shape metal tube (2) and be uneven, have the area of the close plastic layer of through hole (5) and through hole (5) in uneven the groove less than being inside trumpet shape near via area, the pipe face of D shape metal tube (2) has plastic layer (3) again.
2. the helical bellows that is made of the concavo-convex wedge hole on framework of open D shape according to claim 1, it is characterized in that: it is little 20 millimeters that described D shape metal tube (2) bottom surface is A/F.
3. the helical bellows that is made of the concavo-convex wedge hole on framework of open D shape according to claim 1 and 2, it is characterized in that: described opening refers to D shape metal tube length direction opening (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220005624 CN202868119U (en) | 2012-01-09 | 2012-01-09 | Helically corrugated tube comprising open type D-shaped convex-concave wedge hole framework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220005624 CN202868119U (en) | 2012-01-09 | 2012-01-09 | Helically corrugated tube comprising open type D-shaped convex-concave wedge hole framework |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202868119U true CN202868119U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220005624 Expired - Fee Related CN202868119U (en) | 2012-01-09 | 2012-01-09 | Helically corrugated tube comprising open type D-shaped convex-concave wedge hole framework |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202868119U (en) |
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2012
- 2012-01-09 CN CN 201220005624 patent/CN202868119U/en not_active Expired - Fee Related
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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: 20130410 Termination date: 20190109 |