CN102147513A - High-strength metal sleeve for optical cables - Google Patents
High-strength metal sleeve for optical cables Download PDFInfo
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- CN102147513A CN102147513A CN2010101186813A CN201010118681A CN102147513A CN 102147513 A CN102147513 A CN 102147513A CN 2010101186813 A CN2010101186813 A CN 2010101186813A CN 201010118681 A CN201010118681 A CN 201010118681A CN 102147513 A CN102147513 A CN 102147513A
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- sleeve
- cable
- metal
- sheath
- optical cable
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Abstract
The invention relates to photo-communication transmission equipment, in particular to a high-strength metal sleeve for optical cables. In the sleeve, a plurality of bar-shaped metal sheets are overlapped transversely to form a circular tube, and each metal sheet is arranged in a spiral form and is made of stainless steel, the section of each metal sheet is pressed into a Z shape basically, and the height of the formed step is matched with the height of the metal sheet. Compared with a sleeve formed by arranging steel wires into a circle, under the condition that the weights of used materials are same, the sleeve has obviously reduced thickness, thus the overall diameter of a cable is reduced, and the manufacture, transportation, construction and maintenance costs of the product are lowered. Since inner and outer cambered surfaces formed by the sleeve of such a structure are a full circle, forces acting on the cable are uniform, and the cable can be better protected; in addition, the metal sheets are overlapped transversely, compression resistance is improved greatly while tensile strength is ensured.
Description
Technical field:
The present invention relates to optical communication transmission equipment, is the improvement to cable jacket, is particularly suitable for the manufacturing of submarine optical fiber cable.
Background technology:
Optical fiber in the optical cable is widely used in the information transmission technology as a kind of optical waveguide medium.For submarine optical fiber cable, mechanical propertys such as its tensile property and compressive property have higher requirement, in case because the optical cable fracture, maintenance will be very difficult, and maintenance cost is also very expensive.Chinese patent 02218752.9 " high tensile steel wire armouring submarine optical fiber cable " has been introduced a kind of improvement project, as shown in Figure 1, comprise optical fiber 1, stainless loose sleeve pipe 2, insulation inner sheath 3, inner sheath is provided with the protective metal shell 4,5 that the double layer of metal armor constitutes outward, high tensile steel wire by the zinc-aluminum-magnesium alloy layer is made, and is provided with oversheath 6 outside the protective metal shell 5, can improve the physical strength of optical cable.Its weak point is: because protective metal shell 4,5 is by the high tensile steel wire circumferential arrangement, the diameter of formation is bigger, causes the optic cable diameter of last moulding bigger than normal, Heavy Weight, especially double-layer wire protective metal shell; And because the steel wire of circumferential arrangement does not have between laterally connects, compressive property is not good enough yet.In fact, if optic cable diameter can both reduce production, transportation, construction and maintenance cost even millimetre-sized reducing arranged, economic benefit is fairly obvious.
Summary of the invention:
The objective of the invention is at above-mentioned technical matters, the high duty metal sheath of the swedged optical cable of a kind of energy is provided.
Technical scheme of the present invention is: a kind of high duty metal sheath of optical cable, be characterised in that this sheath becomes the pipe shape by many bar shaped sheet metal transverse laps, and every strip metal thin slice shape in the shape of a spiral reverses.
Described sheet metal is made by stainless steel.
Described bullion thin slice cross section is pressed into " Z " font basically, and the thickness of formed bench height and sheet metal matches.
Formed two step surfaces of described " Z " font are arc surface.
The present invention is owing to become the pipe shape with the protective metal shell in the optical cable by bullion thin slice transverse lap, compare with the protective metal shell that the steel wire of circumferential arrangement forms, under identical weight material situation, thickness obviously reduces, also promptly can dwindle the integral diameter of optical cable, reduce manufacturing, transportation, construction and the maintenance cost of product; The internal and external cambered surface that this structure sheath forms is a full circle, and the power that acts on the optical cable is uniformly, can play the effect of protection optical cable better, and the inside and outside circle cambered surface that steel wire forms is a waveform, and the power that acts on the optical cable is uneven; In addition, laterally overlap mutually between the sheet metal, when guaranteeing tensile property, compressive property is effectively strengthened.
Description of drawings:
Fig. 1 is a kind of structural representation of prior art optical cable.
Fig. 2 is a protective metal shell front view of the present invention.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the vertical view of prior art protective metal shell.
Fig. 5 is single bullion chip shape figure in the protective metal shell of the present invention.
Fig. 6 is the cross-sectional view of Fig. 5.
Fig. 7 utilizes the made double-level-metal sheath master of the present invention to look synoptic diagram.
Embodiment:
Single bullion thin slice 41 shapes such as Fig. 5, shown in Figure 6, embodiment adopts stainless steel material to make, and also can adopt other metal materials antirust or the antirust processing of process to make certainly.Its manufacture craft is: at first become the fillet sheet with the cutting of stainless steel thin slice or with drawn steel wire, make it laterally be arc surface through roll extrusion then, the curvature of cambered surface is decided by required optical cable specification; Again the arc surface silver is pressed into basically " Z " font by mould, the thickness of formed bench height and stainless steel silver 41 matches, and formed two step surface 41a up and down and 41b are arc surface, make the transverse lap place closely connected as far as possible; Formed step bending part can play the effect of reinforcement, helps strengthening the compressive strength of sheath; At last it is reversed into spiral fashion, the direction of reversing can be left-handed or dextrorotation.
Many above-mentioned stainless steel silvers are surrounded tubulose, send into the head that closes up of make-up machine in the lump together with the optical fiber of optical cable, loose sleeve pipe, insulation inner sheath, adjacent stainless steel silver 41 is overlapped mutually and is formed as Fig. 2, protective metal shell 4 shown in Figure 3 in the process of moving ahead.Because every stainless steel silver screw twisted, under the effect of twisting resistance, the sheath that overlap joint forms can be not loose voluntarily, need not the hoop cover, makes things convenient for the follow-up production process of optical cable.Fig. 3 is compared with Fig. 4, and under the situation of same inner diameter, the sheath external diameter that this structure forms is obviously than the reduced diameter of prior art metal steel wire sheath.
According to the special machine requirement of strength of submarine optical fiber cable, the general employing is respectively left-handed and double-deck said structure protective metal shell 4,5 dextrorotation, as shown in Figure 7, and to guarantee the mechanical tensile property of optical cable.
Claims (4)
1. the high duty metal sheath of an optical cable is characterized in that this sheath becomes the pipe shape by many bar shaped sheet metal transverse laps, and every strip metal thin slice shape in the shape of a spiral reverses.
2. according to the high duty metal sheath of the described optical cable of claim 1, it is characterized in that described sheet metal made by stainless steel.
3. according to the high duty metal sheath of claim 1 or 2 described optical cables, it is characterized in that bullion thin slice cross section is pressed into " Z " font basically, the thickness of formed bench height and sheet metal matches.
4. according to the high duty metal sheath of the described optical cable of claim 3, it is characterized in that formed two step surfaces of described " Z " font are arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101186813A CN102147513A (en) | 2010-02-06 | 2010-02-06 | High-strength metal sleeve for optical cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101186813A CN102147513A (en) | 2010-02-06 | 2010-02-06 | High-strength metal sleeve for optical cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102147513A true CN102147513A (en) | 2011-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101186813A Pending CN102147513A (en) | 2010-02-06 | 2010-02-06 | High-strength metal sleeve for optical cables |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102147513A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162887A (en) * | 2010-02-23 | 2011-08-24 | 章君旭 | Special-shaped wire sheath for optical fiber unit in special optical cable |
| CN106125238A (en) * | 2016-08-29 | 2016-11-16 | 中天科技海缆有限公司 | A kind of wear-resistant submarine optical fiber cable |
-
2010
- 2010-02-06 CN CN2010101186813A patent/CN102147513A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162887A (en) * | 2010-02-23 | 2011-08-24 | 章君旭 | Special-shaped wire sheath for optical fiber unit in special optical cable |
| CN106125238A (en) * | 2016-08-29 | 2016-11-16 | 中天科技海缆有限公司 | A kind of wear-resistant submarine optical fiber cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110810 |