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Plug wire device

A technology of inserting and leading wires, applied in the direction of pipes/pipe joints/pipes, cable laying equipment, mechanical equipment, etc., to prevent failures

Inactive Publication Date: 2011-03-30
ISSHO ELECTRICAL WORK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This necessity was not recognized at all before

Method used

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Examples

Experimental program
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Embodiment 1

[0147] refer to figure 1 Example 1 will be described. figure 1 is a schematic cross-sectional view of the wire insertion device of this embodiment. The vacuum suction device 1 is driven by a motor. An air hose 2 made of a rubber tube or a resin tube is fixed so as to cover an opening on the suction side of the vacuum suction device 1 . The vacuum suction device 1 sucks air through an air hose 2 .

[0148] Pipelines 3 serving as cable laying pipes are buried under roads. A lead wire 6 consisting of a steel wire helix is ​​inserted into the line 3 . Both ends of the pipeline 3 are connected to the side of the inspection hole 7 and the inspection hole 8 . The road surface 9 is provided on the surface of the road. The inspection holes 7 and 8 are provided at a predetermined distance, for example, about 200 meters along the road. The insertion port of the pipeline 3 buried in the ground is open toward the wall surface of the inspection hole 8 . The outlet portion 31 of the ...

Embodiment 2

[0165] refer to Figure 6 Example 2 will be described. Figure 6 is a schematic side view of the sealed long bag 62. However, the sealed long bag 62 is subjected to a differential pressure in the pipeline 3 shown in the cross-sectional view. The airtight long bag 62 has a resin bag portion 625 made of a resin film capable of sealing air therein, and a reinforcement portion 626 having flexibility and higher tensile strength in the longitudinal direction than the resin bag portion 625 . The reinforcing part 626 is made of a resin mesh thicker than the resin film constituting the resin bag part 625 , and covers the resin bag 625 .

[0166] Figure 7 It is a partially enlarged schematic side view showing a part of the reinforcement part 626 enlarged. A rear end portion (not shown) of the reinforcement portion 626 is connected to a front end portion (not shown) of the lead wire 6 (not shown) together with a rear end portion (not shown) of the resin bag portion 625 .

Embodiment 3

[0168] Embodiment 3 will be described with reference to 8. FIG. Figure 8 It is a radial cross-sectional schematic view of the sealed long bag 62 . The sealed long bag 62 has a resin bag portion 625 and a reinforcement portion 626 joined to each other. The resin bag portion 625 is a sealed bag made of a resin film. The reinforcing part 626 is composed of a resin band 6261 having a higher strength than the resin bag part 625 .

[0169] Figure 9 express Figure 8 Modification of the sealed long bag shown. A plurality of short resin bands 6261 are dispersedly arranged on the surface of the resin bag portion 625 .

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Abstract

The present invention provides a plug wire device, capable of easily inserting a lead (6) for laying cables into a pipeline (3) by a minor drive. A enclosed long bag (62) made of resin thin film and enclosed with a little air is used as a propulsion unit of a suction type plug wire device arranged on a front end of the lead (6). The enclosed long bag (62) has a great deformation ability. The enclosed long bag (62) is deformed into a tail spherical graphite shape due to airflow in the pipeline, so as to endow the lead (6) by a strong propelling force.

Description

technical field [0001] The present invention relates to an improvement of a wire insertion device for wire insertion into a pipeline. Background technique [0002] (Conventional plug-in technology) [0003] In the case of cable laying in empty or already cabled pipelines, lead wires for pulling the cables are inserted into the pipelines. [0004] There is known a technique of creating an air flow in a pipeline in order to insert a lead wire into the pipeline. This airflow imparts a propulsion force to a propulsion member fixed to the tip of the lead wire. In the suction mode, the airflow is created by sucking air in the tube from one end of the tube. In the blow-in method, air flow is created by blowing air into the tube from the other end of the tube. [0005] For example, Patent Document 1 described below, owned by the present applicant, employs ribbon-shaped leads. The fluid resistance formed by the belt imparts propulsion to the belt. However, there is a problem th...

Claims

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Application Information

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IPC IPC(8): H02G1/08F16L55/00
Inventor 田原博史
Owner ISSHO ELECTRICAL WORK
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