Cable with ratproof function

A function and cable technology, which is applied in the field of outdoor optical cables, can solve the problems of optical cable bending performance, non-commitment to anti-rat indicators, low production efficiency, etc.

Inactive Publication Date: 2011-03-09
CORNING OPTICAL FIBER CABLE CHENGDU CO LTD
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  • Abstract
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Problems solved by technology

However, it has been found in practice that the production efficiency of optical cables wrapped with steel strips is not only low, but also has a great impact on the bending performance of optical cables; although longitudinal steel strips have high production efficiency, most rats have certain intelligence and can The sheath of the optical cable is gnawed through the overlap of the longitudinal cladding steel belt, so there are certain limitations in using a single-layer steel belt for rodent protection
At present, major optical cable manufacturers in the world have designed optical cables with double-layer or multi-layer steel tape sheath structures, but they do not promise anti-rat indicators, but only delay the timeliness of being bitten by rats, so they are only resistant to rat bites. Function, still can only ensure the smooth communication by constantly changing the optical cable

Method used

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Experimental program
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Embodiment Construction

[0034] Figure 4 The structure diagram of a cable with anti-rat function according to the present invention is taken as an example of an optical cable. On the outer side of the waterproof inner sheath 4 of the cable core 1, a layer of corrugated stainless steel strip 2 is longitudinally wrapped. The wall thickness of the steel strip 2 is 0.125mm, the tensile strength of the steel strip is 700MPa, and the corrugation height is 0.45mm. The distance is 1.8mm, and the piercing tension needs to reach 88N after being tested by simulated rat teeth according to the CN101650279A method. Outside the corrugated steel strip 2, a single copper-clad steel wire 3 with a diameter of 0.4 mm is wrapped (that is, the white stripe in the figure), and the distance between adjacent wrapped steel wires 3 is 20 mm. A layer of high-density polyolefin sheathing material 5 with a thickness of 1.8 mm is extruded outside the wrapping steel wire 3 by a conventional extrusion process. Tested by the above ...

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Abstract

The invention discloses a cable with ratproof function, which is characterized in that a longitudinally-wrapped embossing steel band structure layer and an external polymer-material protective layer are arranged outside a cable core, and a structure layer comprising at least one wrapped steel wire is adjacently arranged outside the longitudinally-wrapped embossing steel band structure layer. Test results show that the cable in such a structure not only has the advantage of rodent resistance, but also has the function of preventing the damages caused by rats.

Description

technical field [0001] The invention relates to a cable, in particular to a cable which has the function of preventing rodents from biting and destroying, and which can be preferentially but not limited to be used for outdoor optical cables. Background technique [0002] Rodent proofing of cables has always been an important research direction in the cable industry. Taking a large number of communication optical cables laid outdoors as an example, after a long period of exploration, people tend to use steel strips in the form of wrapping or longitudinal wrapping, especially steel strips to prevent rodents from biting and destroying. However, it has been found in practice that the production efficiency of optical cables wrapped with steel strips is not only low, but also has a great impact on the bending performance of optical cables; although longitudinal steel strips have high production efficiency, most rats have certain intelligence and can The sheath of the optical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44H01B7/22
Inventor 杨世信魏成东肖斌肖文革夏榕朱亮
Owner CORNING OPTICAL FIBER CABLE CHENGDU CO LTD
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