JP3138434B2 - Leader for cable drawstring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for extending a cable between power poles by supporting and guiding a spiral cable hanger suspended on a suspension wire (messenger wire) stretched between power poles. The present invention relates to a lead device for a drawstring for a cable used for moving a cable along a spiral cable hanger. That is, the cable connected to the distal end of the cable pull cord is pulled from one power pole to the position of the other power pole, and the cable connected to the terminal side of the cable pull string is supported and guided by the spiral cable suspender, and is moved.
The cable is stretched between telephone poles, but the present invention
The present invention relates to a lead device for a cable drawstring used for moving the tip of a cable drawstring from one power pole side to another power pole side.

[0002]

2. Description of the Related Art There is only a method of using a so-called hanging operation or a high-altitude operation performed hanging on a suspension line.
In any case, the tip of the cable pull cord is moved from one power pole side to the other power pole side along the helical cable hanger with the hand.

[0003]

In any of the prior arts, the workability is lacking because the worker moves the pull cord for the cable along the helical cable hanger while moving along the hanging line.

An object of the present invention is to provide a leading device for a drawstring for a cable which does not require an operator to be disposed between utility poles and has excellent workability.

[0005]

SUMMARY OF THE INVENTION At the rear end of a leading tool disposed inside a helical cable hanger suspended from a suspension wire, a pressing wire body made of a flexible material having a length corresponding to the distance between utility poles is provided. A basic means is to connect a leading end, connect a leading end of a drawstring to which a cable is connected to a distal end of the pressing wire body, and movably attach the leading device to the suspension line.

A plurality of hooks having one end fastened to one side of the guide main body are arranged side by side along the longitudinal direction of the main body, and the hooks are hung inside. A thin V-shaped elastic piece having an engagement gap for relatively engaging the wire is provided, and a locking hole is provided on a free end side of the hooking piece, and a projection for locking the locking hole is provided. A child is provided on the other end of the main body opposite to the one side so as to be able to protrude and retract, and a through hole for locking the protrusion via the hooking piece is formed on a locking piece slidably fitted on the main body. With such a configuration, the assembling relationship between the leading tool and the suspension line is maintained well, and the leading operation of the cable drawstring is performed even more smoothly.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a leading device for a pull cord for a cable according to the present invention, FIG. 2 is a front view, FIG. FIG. 4 is a cross-sectional view taken along line YY of FIG. 1.

In the drawing, reference numeral 1 denotes a cable suspension line installed between utility poles, and a spiral cable suspension 2 is arranged almost all over the utility pole so as to be wound around the suspension line 1.

The helical cable hanger 2 is a helical hanger unit (having a length of 1, 0 m to 1, 5 m).
Are sequentially sent out from one utility pole side to another utility pole side along the suspension line 1 while being connected by a joint sleeve, and are arranged between the utility poles. Book) is large enough to be inserted.

Reference numeral 3 denotes a leading tool for moving between utility poles along the hanging wire 1 through a spiral cable hanging tool 2, and the leading tool 3 comprises a leading tool main body 4 and a pair of hook pieces 5, 5 '. Assembling, the hanging pieces 5, 5 'can be detached and the hanging line 1
, And the hanging pieces 5 and 5 ′ are made of thin metal pieces, so that they can easily move along the hanging line 1 even at the contact portion between the hanging line 1 and the spiral cable hanging tool 2.

A connector 7 is attached to the leading tool 3 at a distal end of a pressing wire 6 made of a flexible material and a connector hook 8 is provided at a distal end thereof.
A pull cord 10 having a cable connected to the end thereof is attached to the connection hook 8 at the end of the wire tool 9.

Then, the leading tool 3 is disposed inside the spiral cable hanging tool 2 from one of the utility poles, and
That is, when the pressing wire 6 is pressed from the one power pole side to the other one power pole side, the pressing wire 6 moves the leading tool 3 toward the other one of the power poles inside the spiral cable hanging tool 2. At the same time, when the yoke tool 9, that is, the pressing wire 6 is pulled on the other power pole side, it is pulled by the pressing wire 6, and the tip of the drawstring 10 is pulled inside the helical cable hanging device 2. Then, the cable is laid between the utility poles by moving from the utility pole side to the other utility pole side, and then pulling the drawstring 10.

The pressing wire 6 has a length suitable for pushing the leading tool 3 from one utility pole to the other utility pole,
In the embodiment, it is constituted by a flexible wire made of FRP.

Here, the term "flexible" refers to the helical cable suspender 2.
, And a property in which the pressing force is transmitted to the leading tool 3.

The leading tool main body 4 of the leading tool 3 is made of a rod-shaped metal body, and bolt rods 12, 12 'are screwed into screw holes 11, 11' provided at both front and rear ends of the leading tool body 4. In combination, the control cylinders 13 and 13 ′ are tightened,
13 'regulates the rotation of the hook pieces 5, 5' arranged adjacent to the regulating cylinders 13, 13 'in the direction along the axis of the leading tool main body 4 (the direction along the suspension line 1).

The hook pieces 5, 5 'are made of a thin (leading tool 3).
When the cable moves along the suspension line 1, the helix cable hanger 2 does not interfere, and the hanger line 1 and the helix cable hanger 2
(A stainless steel material in this embodiment), and the engaging gaps 14 and 14 ′ are large enough to relatively engage the hanging wire 1 inside.
One end of the screw 1 is attached to one side of the leading tool main body 4 so as to be adjacent to the regulating cylinders 13 and 13 ′.
5 and 15 ', and the other end side has locking holes 16, 16
′ Is provided so as to engage with the projections 17, 17 ′ provided on the other side of the leading tool main body 4 so as to be able to protrude and retract on the other side (corresponding to the one side) of the screws 15, 15 ′. It is.

The projections 17, 17 'are provided on the main body 4 by being urged by springs 18, 18' housed in the guide main body 4 so as to always protrude from the peripheral surface. , 17 ′ with through-holes 19, 19 ′ which are locked in the pieces 20 a, 20 ′ a through the engaging pieces 5, 5 ′. Let me do it.

Each of the locking pieces 20 and 20 'is formed of a cylindrical body provided with engagement grooves 21 and 21' along the longitudinal direction of the main body 4 on its inner surface. 4 is fitted as described above, and the engaging grooves 21 and 21 ′ are engaged with spring pins 22 and 22 ′ attached to the leading member main body 4, and are engaged with the pins 22 and 22 ′. Grooves 21, 21 '
The through holes 19, 19 'formed in the pieces 20a, 20'a securely engage and disengage the projections 17, 17'.

The locking pieces 20 and 20 'are connected to the leading tool main body 4.
The movement of the projections 17 and 17 'in the direction of separation is restricted by the presence of the large-diameter portion 4A at the central portion in the longitudinal direction.

The cap member 23 is screwed into the bolt rod 12 on the front end side of the leading body 4, and the connector 7 is screwed and connected to the bolt rod 12 ′ on the rear end side. The tool 9 is connected to the guide 3.

The reason why the leading tool main body 4 is symmetrical in front and rear is that both ends of the main body can be used as "tips" by rearranging the cap material 23.

Thus, the engagement gap 1 between the hook pieces 5, 5 '
The hooks 5 and 5 'of the leading member 3 are combined with the hanging wire 1 so that the hanging wire 1 is relatively engaged with the hanging wires 1 and 4 and 14'. Holes 16 and 16 ′ for spring 1
After the locking pieces 20, 20 'are pressed in the screw hole 11, 11' direction from the main large diameter portion 4A side after engaging with the projections 17, 17 'urged in the protruding direction at 8, 18', Mating groove 21,
The locking pieces 20, 20 'move straight along the axis of the leading body 4 due to the engagement relationship between the locking pins 20, 20' and the pieces 20a, 2a of the locking pieces 20, 20 '.
The through holes 19, 19 ′ of 0 ′ a are engaged with the projections 17, 17 ′, and the leading tool 3 is suspended from the suspension line 1.

Then, the leading operation of the cable pull cord 10 is performed by connecting the connector 7 of the wire fitting 9 with the bolt rod 12 'and operating as described above.

[0024]

The present invention has the configuration described above,
By simply performing the pressing operation of the pressing wire from one of the utility poles, there is no need to arrange a leading tool, and an apparatus excellent in workability can be provided.

Further, by simply moving the locking piece, the attaching and detaching operations of the hanging piece with respect to the hanging line can be performed, and the movement of the leading tool along the hanging line is performed smoothly, so that the leading work can be efficiently performed. It can be carried out.

[Brief description of the drawings]

FIG. 1 is a front view.

FIG. 2 is a partially cutaway front view of a leading device.

FIG. 3 is a sectional view taken along line XX of FIG. 1;

FIG. 4 is a sectional view taken along line YY of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hanging wire 2 Spiral cable hanging tool 3 Leading tool 6 Pressing wire body 10 Pull cord

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-19138 (JP, A) JP-A-9-135510 (JP, A) JP-A-9-243890 (JP, A) 497 (JP, U) Japanese Utility Model 57-113609 (JP, U) Japanese Utility Model 63-105410 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 1/02

Claims (2)

(57) [Claims] 1. A front end of a pressing wire body made of a flexible material having a length corresponding to a distance between utility poles is connected to a rear end of a leading tool disposed inside a spiral cable hanger suspended from a hanging wire. A lead device for a pull cord for a cable, wherein a distal end of a draw cord having a cable connected to the distal end is connected to a distal end of the pressing wire body, and the leading tool is movably assembled to the hanging wire. 2. The pulling string guiding device for a cable according to claim 1, wherein the guiding device has the following items a) to d). a) A plurality of hooking pieces having one ends fastened to one side of the guide main body are arranged side by side along the longitudinal direction of the main body. b) The hanging piece is constituted by a thin V-shaped elastic piece having an engagement gap for engaging the hanging wire relatively inside. c) A locking hole is provided on the free end side of the hooking piece, and a projection which is locked in the locking hole is provided on the other end of the main body opposite to the one side so as to be freely retractable. and d) providing a through hole for locking the projection via the hooking piece on the locking piece slidably fitted to the main body.