JPS5972407A - Aerial optical cable laying device - Google Patents

Abstract

PURPOSE:To minimize tension which is put onto an optical fiber by constituting so that an optical cable drawn out of a supply drum on a drum stand conforms with an axis of the center line of a traction mechine and is fed into a linear guide. CONSTITUTION:A suspension wire 2 crossed and drawn through the upper end of an electric pole 1 is fixed to the upper end side face of the electric pole 1 by metallic fittings 3. A rack base 5 on which a traction machine 4 is placed has a clamp 6 for fixing it to the electric pole 1, on one end, and the other end of a stay 8 whose one end is fixed by a clamp 7 to the electric pole 1 under the clamp 6 is fixed to the lower face of the other end. Also, the upper face of a U-shaped suspension frame 9 provided on the rack base 5 is made to press-contact with the suspension wire 2, and the rack base 5 is hung and fixed to the suspension line 2 by a clamp 10. The traction machine 4 is, for instance, an endless belt type having endless belts 12 placed vertically and opposingly, which is driven by a motor 11.

Description

[Detailed description of the invention] The present invention relates to a laying device for a bridge optical cable.

To install a Karitsune cable overhead, the cable pulled out from the cable drum placed on the ground must be placed 4' above the top of the utility pole.
(R) A plurality of fishing wheels are provided between the drum and the above-mentioned hanging wire to a height equal to the height of the hanging wire that has been pulled through, and the cable is guided by the plurality of fishing wheels. ), ; The gill net connected at the end is pulled from the utility pole side at the other end of the span using a winch.

However, when an optical cable with a small mechanical strength is laid by the above-mentioned laying method, there is a risk of damage to the cable due to insufficient force management.

The present invention has been made based on the above circumstances, and provides an overhead optical cable installation device that can install optical cables without damaging them.

The invention will now be described in detail with reference to the drawings. Upper end fJ of utility pole 1: The left suspension wire 2, which is passed across, is fixed to the upper end side surface of the utility pole 1 with a metal fitting 3. The frame 5 on which the fishing rock 4 is mounted 1σ has a clamp 6 at 7, 7ij, and H for fixing it to the pillar 1, and the other end has a clamp 6 below the clamp 6.
Attach one end to utility pole 1 with clamp 7!・In addition to stay 8, which was determined in 11, 'ilj is IC↓l, <=. Furthermore, the upper surface of the U-shaped suspension frame 9 provided on the pedestal 5 is in contact with the suspension line 2, and the pedestal 5 is suspended and fixed to the suspension line 2 by means of a clamp 10.

The traction machine 4 is of an endless belt type, which is driven by a motor li and has endless belts 12 arranged vertically opposite to each other.

On the artificial side of the sand 4, a guide 11 is provided, which is suspended and supported by a metal fitting 15 from a support line 14 stretched from the metal fitting 3 to the upper end of a support 13 fixed to the ground G.

In addition, a linear guide 17 is provided on the exit side of the towed remainder 4. Each of these guides is configured as described below.

R-type guide 1.11:d2 As shown in the figure, a pair of arc-shaped side plates 16a and 16f are placed opposite each other, and a large number of freely rotating rollers 18 are provided along the concave edges of the side plates 16a and 18, and a plasterboard 4 is provided at one end of the guide.
The fixing plate 20 is fixed to the bracket 19 on the "person"side)
;It's a good idea. The hanging fitting 15 includes side plates 16A and 16J: a substrate 21 that connects the edges, and a sleeve 22 that is pivotally connected to this.
It is composed of a hanging plate 25 that is slidably engaged with this sleeve and that is engaged with a fastening screw 23 fixed to the sleeve 22 through a long hole, and a clamp 26 that is provided at the end of this hanging plate. . Further, at the entrance and exit of the R-shaped guide, free rotating rollers 27 and 28 are provided on the upper edge of the side plate and on the inner surface of the side plate, respectively, and are shaped like parallel cross-shaped rollers.

Further, the linear guide 17 is constructed by providing a large number of freely rotating rollers 29 on the bottom surface of the gutter-like guide, and although not shown, the same cross-shaped rollers as described above are provided at the exit portion thereof.

Note that the diameters and positions of the rollers 18 of the R-type guide 16 are appropriately connected so that the tangent to the arc formed by the axis of the optical cable guided by the row of rollers 18 coincides with the center line of the traction machine 4. This is how it works.

In the device of the present invention, the optical cable 3IJ-1R type guide 16 pulled out from the Xabry drum 31 on the drum stand 30 guides the optical cable 3IJ-1R type guide 16, aligns the axis with the center line of the traction 1 and 4, and sends it to the linear guide to the appropriate size. Therefore, the tension applied to the optical fiber can be minimized. ! !
In addition, since the fiber is pulled by a pulling device on a pole instead of being pulled by a winch as in the conventional method, there is less risk of applying excessive force and the optical fiber is less likely to be damaged. Further, there is no risk of abnormal bending of the cable due to fluctuations in back tension, etc. on the cable sending side. Since the twisted R-shaped guide can be easily removed, the traction machine 4 can also be used for intermediate pulling.

[Brief explanation of drawings]

Figure 1 is a front view of the present invention - an actual JI mountain example, Figure 32A &
;t. Its main part is an enlarged front view, and FIG. B is its end view. 1... Telephone pole, 2... Hanging rope, 3... Metal fittings, 4...
Traction machine, 5... mount, 6, 7... clamp, 8-stay, 9... hanging frame, 10... clamp, 12... heel belt, 14... support pedestal, 16...・R-type guide, 1
7...Linear guide, 18.29...Free rotation roller. 141Ji Representative Patent Attorney Kikuchi Gobe Doyama 1) Shin Akira Figure 2A

Claims (1)

[Claims] It is fixed to the utility pole with a clamp, and the utility pole - (one end is 1"
lr, cut and drawn seven 'I9. A trestle suspended from a hanging rope fixed to the top end of the pillar, a thorn installed on this trestle, and a number of arcuate convex upwards hanging from the entrance side of the thorn. It is characterized by consisting of an RS guide consisting of freely rotating rollers arranged in an arc shape, and a line guide provided on the 1'' side of the traction arm; 1 having a large number of freely rotating rollers on the bottom surface. Overhead optical cable X5 installation equipment.