CN203628068U - Steel-plastic helical corrugated tube - Google Patents
Steel-plastic helical corrugated tube Download PDFInfo
- Publication number
- CN203628068U CN203628068U CN201320854314.9U CN201320854314U CN203628068U CN 203628068 U CN203628068 U CN 203628068U CN 201320854314 U CN201320854314 U CN 201320854314U CN 203628068 U CN203628068 U CN 203628068U
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- Prior art keywords
- plastic
- belt
- projection
- steel
- steel band
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a steel-plastic helical corrugated tube which comprises a plastic tube wall formed by helically winding a plastic plate belt. The two sides of the plastic plate belt are overlapping parts. After the plastic plate belt is wound, the overlapping parts on the two sides of the plastic plate belt are in overlapping joint. The steel-plastic helical corrugated tube is characterized in that protrusions are arranged on the outer side of the plastic tube wall. The protrusions are of a hollow inverted trapezoidal structure. Reinforcing steel belts are helically wound around the protrusions. The height of the protrusions and the height of the reinforcing steel belt are equal to or lower than the height of the reinforcing steel belt. A reinforcing layer is wound around the wound reinforcing steel belt and the protrusions, and coated with a melt surface layer. The steel-plastic helical corrugated tube is reasonable in design, simple in structure, high in ring stiffness and long in service life, the protrusions are not disengaged from the steel belt, no side chopping phenomenon exists during production, the ring stiffness of a pipeline is ideal, and the use strength is high.
Description
Technical field
The utility model relates to a kind of drainage pipe, is specifically related to a kind of steel and moulds helical bellows.
Background technique
Normally winding steel outside plastic pipe of the steel plastic drain pipe of existing spiral winding, and then form at steel strip surface coating plastic.Between the projection of plastic pipe and steel band, support for straight wall adds salient point or lath, its shortcoming is: quantity of plastics is wasted, and easily slippage between projection and steel band side easily occurs when production and splits phenomenon, and the ring stiffness of pipeline is undesirable and working strength is low.
Summary of the invention
The purpose of this utility model is exactly the defect existing for prior art, provides a kind of steel to mould helical bellows.
Its technological scheme is: steel is moulded helical bellows, comprise the plastic tube wall being rolled by plastic board/belt spiral, plastic board/belt both sides are wherein overlap, after having rolled, the overlap of plastic board/belt both sides overlaps mutually, be provided with projection in plastic tube wall outside, this projection is the inverted trapezoidal shape structure of hollow, between projection, spiral winding has reinforcement steel band, the height of projection with strengthen that the height of steel band flushes or lower than the height of reinforcement steel band, outer felt in the reinforcement steel band having rolled and projection is wound with one deck reinforced layer, apply bath surface layer outward at reinforced layer.
Wherein, described reinforcement steel band is for extending to form sidepiece bending downwards from two ends, top, and sidepiece lower end bends laterally and extends to form bottom, and the width of its bottom is greater than the width at top.Described reinforcement steel band two bottom sides is stuck on the skew wall of protruding both sides.
The utility model compared with prior art, has the following advantages: reasonable in design, simple in structure, ring stiffness is high, the life-span is long, not slippage between projection and steel band, splits phenomenon without side when production and occur, and ring stiffness ideal and the working strength of pipeline are high.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment's of the utility model structural representation;
Fig. 2 is the another kind of embodiment's of the utility model structural representation.
Embodiment
Embodiment 1:
With reference to Fig. 1, a kind of steel is moulded helical bellows, comprise the plastic tube wall being rolled by plastic board/belt 1 spiral, plastic board/belt 1 both sides are wherein overlap, after having rolled, the overlap of plastic board/belt 1 both sides overlaps mutually, be provided with projection 2 in plastic tube wall outside, this projection 2 is the inverted trapezoidal shape structure of hollow, 2 spiral windings of projection have the steel band 3 of reinforcement, the height of projection 2 flushes with the height of strengthening steel band 3, outer felt in the reinforcement steel band 3 having rolled and projection 2 is wound with one deck reinforced layer 4, applying bath surface layer 5 outward at reinforced layer makes pipeline external surface become smooth surface.Wherein, described reinforcement steel band 3 is for extending to form sidepiece bending downwards from two ends, top, and sidepiece lower end bends laterally and extends to form bottom, and the width of its bottom is greater than the width at top.Described reinforcement steel band 3 two bottom sides are stuck on the skew wall of protruding 2 both sides.Described protruding 2 link into an integrated entity with plastic board 1.
Embodiment 2:
With reference to Fig. 2, a kind of steel is moulded helical bellows, comprise the plastic tube wall being rolled by plastic board/belt 1 spiral, it is overlap that plastic board 1 is wherein with both sides, after having rolled, the overlap of plastic board/belt 1 both sides overlaps mutually, be provided with projection 2 in plastic tube wall outside, this projection 2 is the inverted trapezoidal shape structure of hollow, 2 spiral windings of projection have the steel band 3 of reinforcement, the height of projection 2 is lower than the height of strengthening steel band 3, outer felt in the reinforcement steel band 3 having rolled and projection 2 is wound with one deck reinforced layer 4, applying bath surface layer 5 outward at reinforced layer makes pipeline external surface become smooth surface.Wherein, described reinforcement steel band 3 is for extending to form sidepiece bending downwards from two ends, top, and sidepiece lower end bends laterally and extends to form bottom, and the width of its bottom is greater than the width at top.Described reinforcement steel band 3 two bottom sides are stuck on the skew wall of protruding 2 both sides.Described protruding 2 link into an integrated entity with plastic board 1.
The utility model is reasonable in design, simple in structure, ring stiffness is high, the life-span is long, and not slippage between projection and steel band is split phenomenon without side when production and occurred, and ring stiffness ideal and the working strength of pipeline are high.
Claims (3)
1. steel is moulded helical bellows, comprise the plastic tube wall being rolled by plastic board/belt spiral, plastic board/belt both sides are wherein overlap, after having rolled, the overlap of plastic board/belt both sides overlaps mutually, it is characterized in that: be provided with projection in plastic tube wall outside, this projection is the inverted trapezoidal shape structure of hollow, between projection, spiral winding has reinforcement steel band, the height of projection with strengthen that the height of steel band flushes or lower than the height of reinforcement steel band, outer felt in the reinforcement steel band having rolled and projection is wound with one deck reinforced layer, apply bath surface layer outward at reinforced layer.
2. steel according to claim 1 is moulded helical bellows, it is characterized in that: described reinforcement steel band is for extending to form sidepiece bending downwards from two ends, top, and sidepiece lower end bends laterally and extends to form bottom, and the width of its bottom is greater than the width at top.
3. steel according to claim 1 and 2 is moulded helical bellows, it is characterized in that: described reinforcement steel band two bottom sides is stuck on the skew wall of protruding both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854314.9U CN203628068U (en) | 2013-12-24 | 2013-12-24 | Steel-plastic helical corrugated tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320854314.9U CN203628068U (en) | 2013-12-24 | 2013-12-24 | Steel-plastic helical corrugated tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203628068U true CN203628068U (en) | 2014-06-04 |
Family
ID=50814545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320854314.9U Expired - Fee Related CN203628068U (en) | 2013-12-24 | 2013-12-24 | Steel-plastic helical corrugated tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203628068U (en) |
-
2013
- 2013-12-24 CN CN201320854314.9U patent/CN203628068U/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 |
Granted publication date: 20140604 Termination date: 20151224 |
|
| EXPY | Termination of patent right or utility model |