Spring cable

A spring cable, spring wire technology, applied in the direction of fiber mechanical structure, etc., can solve the problems of anti-side pressure, anti-bending flexibility to be improved, anti-side pressure, bending flexibility is not ideal, affecting the performance of optical cables, etc., to achieve production. The method is simple and easy to learn, has a wide range of applications, and has the effect of low cost

Inactive Publication Date: 2013-07-24
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Optical cables in the prior art usually use composite aluminum strips, corrugated steel strips, etc. to strengthen the mechanical properties of optical cables. The biggest disadvantage of this strengthening method in use is that it is not ideal in terms of lateral pressure resistance and bending flexibility. In the case of repeated torsion, the optical cable is easy to crack, which affects the performance of the optical cable
In addition, in the communication industry standard YD / T769-2010 of the People's Republic of China, optical cables such as GYXTS and GYXTY are also mentioned. , the role of armored protective optical cable, but its anti-lateral pressure, anti-bending softness needs to be improved

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Please see Fig. 1 to Fig. 5, a kind of spring cable, comprises the central beam tube 3 that is located in the center and the inside is hollow, a plurality of optical fibers 4 located in the inner hollow part of the central beam tube; it is characterized in that there is a spring outside the central beam tube The armor layer 2, and the spring armor layer is close to the outer wall of the central beam tube, and the spring wires of the adjacent layers in the spring armor layer are close to each other; the spring armor layer is extruded with a sheath layer 1.

[0035] The above-mentioned spring cable is characterized in that the central bundle tube is made of polybutylene terephthalate or polypropylene.

[0036] The above-mentioned spring cable is characterized in that the optical fiber is a single-mode fiber or a multi-mode fiber.

[0037] Furthermore, the spring cable mentioned above is characterized in that the optical fiber is G652 type or G655 type or G657 type...

Embodiment 2

[0044] Please see Fig. 6 and Fig. 8, and in combination with Fig. 1 to Fig. 5, a device for forming a spring armor layer on a spring cable is characterized in that it includes a bundle tube coil with a central bundle tube 3 wound around it 51. A steel wire tray 52 with a spring wire 21 and a mold 53 formed by a spring armor layer; The shaft 523 is rotatably fixed on the second fixed frame 521; the first fixed frame is fixed on the foundation, the second fixed frame is fixed on the foundation, and the first fixed frame and the second fixed frame are parallel; Behind the pipe coil and in a fixed state, the axis of the steel wire coil is higher than the upper edge of the bundled tube coil; the mold formed by the spring armor layer is located in front of the bundled tube coil. In this device, the central bundle tube is released from the bundle tube tray and passes through the center hole of the mold formed by the spring armor layer, and is pulled forward; at the same time, the s...

Embodiment 3

[0047] Please see Fig. 7 and Fig. 9, and in combination with Fig. 1 to Fig. 5, a device for forming a spring armor layer on a spring cable is characterized in that it includes a bundle tube coil with a central bundle tube 3 wound around it 51. The steel wire coil 52 with the spring wire 21 wound around it, and the mold 53 formed by the spring armor layer; the beam tube coil is rotatably fixed on the first fixed frame 511 through the shaft, and the steel wire coil is fixed on the winch cage 522 And can rotate around the fixed axis to release the spring wire; the first fixed frame is fixed on the foundation, and the winch cage can rotate around the axis 31 of the central bundle tube; the mold formed by the spring armor layer is located in front of the bundle tube pan. In this device, the central bundle tube is released from the bundle tube tray and passes through the center hole of the mold formed by the spring armor layer, and is pulled forward; at the same time, the spring wi...

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PUM

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Abstract

The invention belongs to the technical field of cables and particularly relates to a spring cable. The spring cable comprises a central bundle pipe which is located at the center and is hollow, and a plurality of light-guide fibers which are located in a hollow part inside the bundle pipe; a spring armor layer is arranged outside the bundle pipe; the spring armor layer is tightly stuck on the outer wall of the bundle pipe; spring wires of adjacent layers in the spring armor layer are tightly close to each other; a protecting bush layer is extruded outside the spring armor layer; and the bundle pipe is made of polybutylene terephthalate or polypropylene; the light-guide fibers are single-mode optical fibers or multi-mode optical fibers; the protecting bush layer is made of low-density polyethylene or middle-density polyethylene or high-density polyethylene or rubber; and the spring wires of the spring armor layer are stainless steel wires or zinc-plated steel wires or phosphorized steel wires. The spring cable is characterized in that the spring armor layer is formed by a spring armor layer forming device. The device disclosed by the invention is simple and reliable, and is low in cost; and a production method is simple and easy to learn.

Description

[0001] This application is a divisional application of the invention patent application with the invention name: a spring cable; application number: 201210103179.4; application date: April 7, 2012. technical field [0002] The invention belongs to the technical field of cables, in particular to a spring cable that adopts spring armor to enhance lateral pressure resistance and twist resistance; and a device for forming a spring armor layer. Background technique [0003] In the prior art, optical cables have been widely used in various industries, especially in the technical field of optical signal transmission. Optical cables in the prior art usually use composite aluminum strips, corrugated steel strips, etc. to strengthen the mechanical properties of optical cables. The biggest disadvantage of this strengthening method in use is that it is not ideal in terms of lateral pressure resistance and bending flexibility. In the case of repeated torsion, the optical cable is easy to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 沈群华
Owner STATE GRID CORP OF CHINA
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