JP2001103627A - Guide tool of pulling string for cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide tool which maintains surely a built state in a suspension wire and can be detached easily. SOLUTION: Base end portions of latching segments 6, 6' constituted of U-shaped elastic segments latching a suspension wire 8 are fixed to the peripheral surface of a guide tool main body 1. Latching holes 12, 12' are formed on the free end portion sides of the latching segments 6, 6'. Protrusions 13, 13' which the latching holes 12, 12' latch are installed on the other side facing one side of the main body 1, so as to appear and sink freely. Through-holes 14, 14' latching the protrusions 13, 13' via the free end portions of the latching segments are installed on one ends of locking segments 15, 15' which are silidably fitted in the guide tool main body 1. Regulation segments 18, 18' which latch by the energizing of springs 19, 19', the other ends of the locking segments 15, 15' when the through holes 14, 14' latch the protrusions 13, 13 are installed on the peripheral side of the guide main body 1, so as to appear and sink freely. Unlocking rings 20, 20', which sink the regulation segments 18, 18' neighboring the locking segments 15, 15' into the guide main body 1, are fitted slidably in the guide tool main body 1.

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 cable drawstring in a lead device for a cable drawstring used for moving a cable along a spiral cable hanger. That is, the cable connected to the terminal side of the cable pull cord is pulled from one power pole to the position of the other power pole, so that the cable connected to the end side of the cable pull cord is supported and guided by the spiral cable suspender, and the cable is moved. The present invention relates to a leading tool used to move the tip of a cable drawstring from one power pole side to another power pole side.

[0002]

2. Description of the Related Art One side of a leading tool is hung on a suspension line,
A base end of a hook piece constituted by a U-shaped elastic piece is fastened, a locking hole is provided on a free end side of the hook piece, and a projection on which the locking hole is hooked is connected to the leading tool main body. A locking piece slidably fitted to the leading tool main body, the through-hole being provided on the other side opposite to the one side so as to be able to protrude and retract so as to be hooked to the projection via the free end of the hooking piece. Is known (see Japanese Unexamined Patent Publication No. 10-351351).
No. 3).

[0003] In this conventional example, a hook is hooked on a suspension line to assemble and move along the suspension line to move the tip end of the cable pull cord from one power pole side to the other power pole side. Although provided for movement, in order to prevent falling off from the suspension line during movement, a through hole provided in the locking piece is provided freely in the leading tool main body, and is engaged with a protruding protruding through the hooking piece. Thus, the hanging state of the hanging piece with respect to the suspension line is maintained.

[0004]

The prior art has a structure in which a locking piece is merely hooked in a through hole on a totsuko provided on the leading tool main body side. When moving along the main body, the free end of the hooking piece may easily come off the protrusion, and a problem may occur.

The present invention has been made in order to solve such a disadvantage of the conventional example.

[0006]

SUMMARY OF THE INVENTION A U-shaped elastic piece, which is hooked on a hanging line on a peripheral surface of a guide member, is attached to a base end of the hooking piece, and a free end of the hooking piece is provided. A locking hole is provided on the part side, and a protrusion that the locking hole locks is provided so as to be able to protrude and retract on the other side opposite to the one side of the leading tool main body. In a leading tool provided with a through hole that is locked via the free end at one end of a locking piece that is slidably fitted to the leading tool main body, in addition to the locking piece when the through hole is locked to the projection. At one end, a regulating piece that is locked by the bias of a spring is provided so as to be able to protrude and retract around the leading tool main body, and the unlocking is such that the regulating piece is inserted into the leading tool main body adjacent to the locking piece. The ring is configured to be slidably fitted to the leading tool.

[0007]

When the locking hole provided at the free end of the locking piece is locked to the projection, the through hole of the locking piece is locked to the projection via the locking hole. The movement of the locking piece of the control piece is maintained by the control of the movement of the lock piece, so that the state in which the guide is assembled to the hanging wire in the hooking piece is maintained, and the control piece is immersed in the main body of the guide by the unlocking ring. As a result, the restriction of the locking piece from being released from the position of the protrusion by the restriction piece is released, and a state in which the free end of the locking piece can be freely released from the protrusion is obtained.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a leading device for a drawstring for a cable according to the present invention. FIG. 1 is a partially cutaway front view, FIG. 2 is a partially cutaway enlarged front view, and FIG. XX sectional view of FIG. 4, FIG.
Is a sectional view taken along the line YY of FIG. 1, and FIG. 5 is a view of FIG.
FIG. 6 is a front view of a state of use.

In the drawing, reference numeral 1 denotes a leading member of the leading member A, and the leading member 1 is formed of a rod-shaped metal body. The bolt 4 is screwed into a screw hole provided at the rear end of each of the bolt rods 4, and the regulating cylinders 5, 5 'are tightened.
Are hooking pieces 6, 6 arranged adjacent to the regulating cylinders 5, 5 '.
′ In the direction along the axis of the leading tool body 1 (the direction along the suspension line 1), that is, the protrusions 13, 13 of the locking holes 12, 12 ′ at the free ends of the hook pieces 6, 6 ′. ′ In the direction along the axis.

The hanging pieces 6, 6 'are made of a thin (leading device A).
When the cable moves along the suspension line 7, the spiral cable suspension 8 does not become an obstacle, and the suspension line 7 and the spiral cable suspension 8
(To the extent that it can pass through) and a U-shaped elastic piece (in the embodiment, stainless steel is used), and a suspension line 8 is provided inside.
Are provided to the extent that they can be relatively engaged with each other. Fastened with screws 11, 11 'via 10, 10', the locking holes 12, 12 'are provided on the free end side, and opposed to the screws 11, 11' (to the one side) (Corresponding to) the protruding members 13, 13 'which are provided on the other side of the leading tool main body 1 so as to be able to come and go freely.

The projections 13 and 13 'are provided on the main body 1 by being urged by springs 3 and 3' housed in the guide main body 1 so as to always protrude from the peripheral surface. , 13 ′ with through-holes 14, 14 ′ for locking through the engaging pieces 6, 6 ′ in the pieces 15 a, 15 ′ a, and slidingly fit the locking pieces 15, 15 ′ into the leading body 1. Let me do it.

The locking pieces 15, 15 'are each formed of a cylindrical body having an engaging groove 16, 16' along the longitudinal direction of the main body 1 on the inner surface thereof. The spring pins 17, 17 'assembled to the guide body 1 are engaged with the engagement grooves 16, 16', and the pins 17, 17 'are engaged with the engagement grooves. The through holes 14, 14 'provided in the pieces 15a, 15'a reliably disengage the projections 13, 13' due to the engagement relationship between 16, 16 '.

The locking pieces 15, 15 'at one end of the locking pieces 15, 15' are engaged with the projections 13, 13 'in the through holes 14, 14'. ´
At the other end position of the
'Is provided in the leading tool main body 1 so as to be freely retractable.

Like the springs 3 and 3 ', the restricting pieces 18 and 18' are urged by second springs 19 and 19 'housed in the guide body 1 so as to always protrude from the peripheral surface. Spring 3
The thin portions 18b, 18'b on the 3 'side are overlapped with the second springs 19, 19' at the thin portions 18b, 18'b.
'B and the thick portions 18a, 18'a connected to each other via step portions 18c, 18'c provided on the front side, and the locking pieces 15, 1
5 ′ overlaps the front and rear (longitudinal) directions of the main body 1 and the coil springs 19, 19 ′ of the locking pieces 15, 15 ′.
It is designed to prevent movement in the direction away from the window. That is, the step portions 18c, 18'c are locked to the locking pieces 15, 15 ', and the protrusions 13, 13' on the free end side of the locking pieces 6, 6 '.
Is reliably maintained.

A main part 1 between the locking pieces 15 and 15 'and the central large diameter part 1A of the guide main body 1 has a main body 1 between the large diameter part 1A and the locking pieces 15 and 15'. The unlocking rings 20 and 20 ′ that freely move along the sliding surfaces are slidably fitted. The unlocking rings 20 and 20 ′ have a tapered edge a on the inner peripheral surface on the side of the locking pieces 15 and 15 ′. a is the restriction piece 1
Sliding contact with the tapered edges a 'provided on the thick portions 18a, 18'a of the 8, 18' facilitates radially against the urging of the restriction pieces 20, 20 'and the second springs 19, 19'. Can be superimposed.

A bolt member 4 'screwed to the rear end side of the leading tool main body 1 is provided with a connector 22 at the leading end of a pressing wire 21 made of a flexible material and a connecting hook 23 at the end. The connector 22 of the tool 24 is attached, and a pull cord 26 to which a cable is connected at the end is attached to the connection hook 23 at the end of the wire tool 24.

The reason why the guide main body 4 is symmetrical in front and rear is that both ends of the main body 1 can be used as "tips" by rearranging the leading piece 2.

Thus, the engagement gaps 9 of the hook pieces 6, 6 ',
9 'and the leading wire A
And the hanging pieces 6, 6 'are combined with the hanging wire 7, and the hanging pieces 6, 6'
After engaging the locking holes 12, 12 'provided in the free end of the 6' with the protruding members 13, 13 'biased in the protruding direction by the springs 3, 3', the locking pieces 15, 15 'are mainly used. When pressed from the large diameter portion 1A side in the direction of the protrusions 13 and 13 ', the engagement groove 1
The locking pieces 15, 15 'move straight along the axis of the leading tool main body 1 due to the engagement relationship between the locking pins 15, 16' and the pieces 15a, 1 'of the locking pieces 15, 15'.
The through-holes 14 and 14 'of 5'a are engaged with the projections 13 and 13', and at the same time, the restricting pieces 18 and 18 'are biased by the second springs 19 and 19' so that the guide body 1 The locking pieces 15, projecting from the peripheral surface at the step portions 18c, 18'c,
15 'to restrict the return of the locking pieces 15, 15' to their original positions, and through the free ends of the locking pieces 6, 6 ', the pieces 15
The locked state of the a and 15 ′ a with respect to the protrusions 13 and 13 ′ is maintained, and the leading tool A is assembled to the suspension line 7.

When the yoke tool 24, that is, the pressing wire 21 is pressed from one power pole side to the other power pole side, the pressing wire body 21 moves the leading tool A inside the spiral cable hanging tool 8 to another position. Is moved to one of the utility poles, and the other side of the utility pole is pulled by the yoke tool 24, that is, the pushing wire 21.
A pull cord 26 is provided inside the spiral cable hanger 8.
Moves from the one power pole side to the other power pole side, and then pulls the drawstring 26 so that the cable is laid between the power poles.

The pressing wire 21 has a length suitable for pushing the leading tool A from one power pole to the other power pole. In the embodiment, a flexible wire made of FRP (here, flexible wire) is used. The property is a property of being deformed and deformed in accordance with the curved path formed by the spiral cable suspending tool 8 and transmitting a pressing force to the leading tool A.).

In this cable hanging operation, the leading tool A
When the unlocking rings 20, 20 'are moved in the direction of the position of the locking pieces 15, 15' along the leading element main body 1 when one is sent from one telephone pole side to the other telephone pole side, the unlocking ring 20 , 20 'urge the restricting pieces 18, 18' into the main body 1 against the bias of the second springs 19, 19 ',
When the unlocking rings 20, 20 'and the locking pieces 15, 15' are moved in the original position in the state of being immersed, the locking pieces 1
5, 15 'return to the original position without being restricted by the restriction pieces 15, 15', and lock pieces 15, 15 '(parts 15a, 15' of the lock pieces 15, 15 ').
The free ends of the hook pieces 6, 6 ', which were maintained in the hooked state with respect to the protrusions 13 and 13' by "a", are connected to the protrusions 13 and 1 '.
3 'can be freely detached, so that the leading tool A can be removed from the suspension line 7.

[0022]

The present invention has the configuration described above,
It is possible to provide a leading tool that can reliably maintain an assembled state with respect to a suspension wire and can be easily removed.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view.

FIG. 2 is a partially cutaway enlarged front view.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is a sectional view taken along line YY of FIG. 2;

FIG. 5 is a sectional view taken along line XX of FIG. 2 in a state immediately before unlocking.

FIG. 6 is a front view of a use state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Leader main body 6,6 'Hanging piece 8 Hanging wire 12,12' Hanging hole 13,13 'Protrusion 14,14' Through hole 15,15 'Locking piece 18,18' Restriction piece 19,19 'Spring

Claims (1)

[Claims] (1) hooking a suspension wire on a peripheral surface of a leading tool main body;
The base end of the hook piece constituted by a U-shaped elastic piece is fastened, a hook hole is provided on the free end side of the hook piece, and the protrusion which the hook hole locks is the leading tool. A through hole provided on the other side opposite to the one side of the main body so as to be able to freely protrude and retracted, and a locking hole slidably fitted to the main body of the leading tool, the through hole being locked to the projection via the free end of a latching piece. In the leading tool provided at one end of the piece, a regulating piece that is locked by the bias of a spring at the other end of the locking piece when the through hole is locked to the projection is provided on the peripheral side of the leading tool main body. A lead device for a pull cord for a cable, wherein an unlocking ring that is provided so as to be able to protrude and retract and that allows the restricting piece to be inserted into the guide device main body adjacent to the locking piece is slidably fitted to the guide device main body.