JP2001128324A - Lead tool for cable pulling string - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lead tool which can be applied to both a messenger wire and a self-supporting cable which have different diameters. SOLUTION: The lead tool of a cable pulling string is placed in a spiral cable hanger, which is supported by a messenger wire or a self-supporting cable, suspended between poles and a cable pulling string, is connected to its tail end. A pair of hanging elements 18 and 18' of the lead tool are hung on the messenger wire or the self-supporting cable. A pair of front and rear partition bars, which partition the recessed parts of the hanging elements, are turnably attached to the support part of the lead tool by a pair of support bars 17, while the standing postures are maintained. The respective base parts 18a and 18a' of the pair of hanging elements, a flat spring 19 and a tightening element 20 are successively piled and attached to the support part by the pair of support bars. Tapered edges inclined in the longitudinal direction of a long hole are formed on the surface of the tightening element, and the head parts of the support bars are engaged in the tapered edges.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of winding a helical hanger around a hanging wire or a self-supporting cable (SSD) erected between electric poles, extending the helical hanger between the electric poles, and receiving the helical cable. When a cable is newly erected between utility poles so as to be supported, a lead of a cable pull cord used for moving the cable along the suspension line or the self-supporting cable (or spiral cable suspension). It is about tools. That is, by pulling the pulled cord for cable from one telephone pole to the position of the other telephone pole, the cable connected to the end side of the cable pull cord is guided and moved by the spiral cable suspender and moved. Accordingly, the cable is installed between the utility poles. However, the present invention provides a leading device of the cable drawstring used for moving the tip of the cable drawstring from one utility pole side to the other utility pole position. It is about.

[0002]

2. Description of the Related Art In order to lay a cable using a hanging wire or a self-supporting cable installed between telephone poles, the self-supporting cable or the hanging wire (messenger wire) is used.
A helical hanger is erected, and means for erection between the utility poles by supporting the cable with the hanger is adopted.However, in order to arrange the cable along a hanger or a self-supporting cable, A cable drawstring for pulling the cable must penetrate the spiral hanger. Conventionally, as a means for this penetration, there is only a method of hanging from a support wire or using an aerial work vehicle. The leading end of the drawstring is moved from one telephone pole to the other telephone pole.

In any of the conventional examples, the workability is lacking because the worker moves the pulling cord for the cable along the spiral cable hanger while moving along the self-supporting type cable.

[0004] For this reason, the present inventors have determined that the workability is excellent without having to arrange an operator between utility poles, and the work is arranged inside a helical cable hanger supported by a support type cable. At the rear end, a pull cord for a cable is connected via a pressing wire made of a flexible material having a length corresponding to the distance between the telephone poles. And a pair of hooking pieces that interpose the hanging wire or the self-supporting cable between the hooking pieces and hook on the hanging wire or the self-supporting cable. A leading device for an erect cable drawstring was proposed first (Japanese Patent Application No. 10-366151).

[0005]

The structure proposed by the present inventors is excellent in workability as intended by the present inventors, but a pair of standing members which are opposed to the main body piece. Is fixed, so that it cannot be selectively used as a hanging wire with a different outer diameter and a self-supporting cable, and the locking work is complicated even if it can be done. Becomes
It has been found that there is a disadvantage that it is necessary to prepare a leading tool corresponding to each of the suspension line and the self-supporting cable.

The present invention has been made in view of such inconveniences and has been devised for the purpose of providing a leading tool which can be applied to both a suspension line having a different outer diameter and a self-supporting type cable.

[0007]

Means for Solving the Problems A cable is disposed inside a suspension cable erected between utility poles or a helical cable suspension supported on a self-supporting cable, and has a rear end corresponding to the distance between the utility poles. The cable pull cord is connected through a pressing wire body made of a flexible material, and the hanging wire or the self-supporting cable is inserted into the concave portion provided on the facing surface of the hooking piece on the long main body piece. Interposed, to hook the upper end of the hanging piece to the hanging wire or the self-supporting cable, in a leading device of a cable drawstring in which a pair of hanging pieces are opposed to each other,
Providing a support portion along the longitudinal direction of the main body piece on the main body piece,
A pair of front and rear partitioning rods that partition the recessed portions of the pair of latching pieces while maintaining the upright state on the supporter are mounted on the supporter so that the partitioning rods can be raised and lowered, and the respective bases of the pair of latching pieces are mounted on the supporter. The base piece and the leaf spring are sequentially mounted on the pair of through holes, and the tightening piece is mounted on the pair of long holes long in the front-rear direction by the pair of support rods. A tapered edge is provided on the surface of the fastening piece, which is inclined in the front-rear direction of the elongated hole, and the head of the support rod is locked to the tapered edge.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an embodiment of a lead cord for a cable according to the present invention, FIG.
3 is a plan view, FIG. 4 is a partially enlarged plan view, FIG. 5 is a bottom view, FIG. 6 is a sectional view taken along line A5-A5 of FIG. 5, and FIG. FIG. 8 is a front view of a state in which the cable is assembled to a self-supporting cable, and FIG.
10 is a cross-sectional view taken along the line A7-A7, FIG. 10 is a cross-sectional view showing a state where the hanging rod is assembled, and FIG. 11 is a perspective view showing a relationship between the partitioning rod and one hooking piece.

In the drawing, reference numeral 1 denotes a main piece of the leading tool A,
Is made of a metal piece long in the front-rear direction having a cross section in which the front end side and the rear end side are gradually narrowed in width and having a slightly square trough shape, and is made thick at the center and long along the longitudinal direction of the main body piece 1 (front and rear). The support portion 2 is provided with windows 3A and 3B on both sides along the longitudinal direction of the support portion 2.

The window 3A is provided with a pair of hanging pieces 18, 1 described later.
8 'base pieces 18a, 18'a are attached to the support section 2 by the support rods 17, 17 through the window 3A, and the hook pieces 18, 18' are erected relative to the main body piece 1. The holding pieces 18, 18 ', the leaf spring 19, or the fastening piece 20 are held by the support rod 17 by the support rod 17.
The window 3B is provided in the main piece 1 in order to maintain the balance between the right and left weights caused by the mounting on the main piece 1.

A triangular leading piece 4 in a plan view is attached to the leading end of the main piece 1 by a hinge means 5 so as to be capable of raising and lowering, and the leading piece 4 is attached to the spiral hanger 6 while the leading tool A is moving forward. When it comes into contact, the coil spring 5a provided in the hinge means 5
To reduce the impact due to the contact.

The reason why the acute end 4a of the leading piece 4 is displaced from the center position along the longitudinal direction of the main piece 1 is that the leading piece 4 extends from the inner peripheral side to the outer peripheral side of the helical cable suspender 6. 4 (and thus the tip of the main piece 1) is prevented from slipping out, and the leading piece 4 to the main piece 1 are spirally hung 6.
To always be located within (inside) the inner periphery of
Due to the shape of the leading piece 4 and the action of the coil spring 5a, when the leading piece 4 hits the helical cable suspender 6, the leading piece 4 slightly changes the forward direction, and the axial direction of the helical cable suspender 6 To the main body piece 1.

At the rear end of the main body piece 1, a flexible pressing wire 7
A connecting member 11 for connecting the connector 8 of a wire tool 10 provided with a connector 8 at the front end and a connection hook 9 at the rear end is provided, and a connecting material 11 for the cable is provided via the wire tool 10 (pressing wire 7). The drawstring 12 is connected (using the connection hook 9) (FIG. 8).

Note that the flexibility of the pressing wire 7 means a property that the pressing wire 7 bends and deforms in accordance with the curved path formed by the spiral cable hanging device 6 and that the pressing force can be transmitted to the leading device A.

A notch 13 is provided at a central portion of one side of the support portion 2 on the side of the window 3A along the longitudinal direction, and a partition rod 14 is provided at a lower end of an intermediate portion of the notch 13 on the side of the window 3A.
The partition rods 14 and 1 are projected so as to be approximately the same
4 are provided (FIGS. 5 and 6).

The semicircular notch 13A provided between the receiving portions 15 and 15 at the lower edge of the support portion 2 engages with a fingertip to facilitate the standing of the partitioning bars 14 and 14. It is.

Screw holes 1 are provided at both front and rear ends of the notch 13.
6 and 16, the pair of support rods 17 and 17 screwed into the screw holes 16 and 16 and protruding from the support portion 2, the pair of partition rods 14 and 14, and the partition rods 14 and 1.
4 and a pair of base pieces 18a, 18a of the pair of hook pieces 18, 18 sequentially superimposed on the support part 2 located on the same plane as each other.
And the leaf spring 19 and the fastening piece 20 are supported.

The partitioning rod 14 has the same thickness as the depth of the notch 13 and the surface on the window 3A side is located on the same plane as the support portion 2 as described above.
A notch 14a that engages with and engages with the receiving portion 15 when lying down, and the base piece 1 of the hooking piece 18b of one of the hooking pieces 18 when standing upright with the support rod 17 pivoted about a pivot.
8a, and stands up through a window 18c formed on the side of the window 18a.
c is engaged with the engaging portions 18c ', 18c on both sides of the retaining portion 18c, and the standing state is maintained, and the recessed portion 21 formed by the engaging portion piece 18b is formed.
To restrict the engagement of the hanging wire 22 into the recess 21 (FIG. 9).

The pair of engaging pieces 18 and 18 'are respectively composed of the base pieces 18a and 18'a and the base pieces 18a and 18'.
'A, and the hooking pieces 18b, 18'b are formed by recessing the facing faces between the hooking pieces 18, 18'. The base pieces 18a, 1 each having a curved cross-section including
8'a is provided with a pair of through-holes (the symbols are omitted because they are provided in correspondence with the support rods 17 and 17), and the support rod 1 is provided in the through-hole.
7 and 17 are attached to the support portion 2, that is, the main piece 1, through the through holes 7 and 17.

The hook pieces 18 of the hook pieces 18, 18 '
b, 18'b are hooked in such a manner that the cable portion (main body portion) 23a of the self-supporting cable 23 (comprised of the cable portion 23a and the suspension wire portion 23b) is engaged in the recessed portions 21, 21 'of the cable 18b. The upper ends of the stopper pieces 18b and 18'b are connected to the cable 2
3a (FIG. 2), and in the case of the suspension line 22 (FIG. 9), as described above, one of the partitioning rods 14, 14 closes the recessed portion 21 on the hooking piece 18 side, and the other is closed. The upper end of the hooking piece 18 ′ b is locked to the hanging wire 22 by engaging the hanging wire 22 with the recess 21 ′ on the one hooking piece 18 ′ side.

The base pieces 18a, 18 of the hook pieces 18, 18 '
The leaf spring 19, which is attached to the support portion 2 by superimposing via 'a, is made of a plate piece which is formed by bending the side surface of the tightening piece 20 and forming a bent shape (an arc shape as shown in FIG. 7). The supporting rods 17, 17 are passed through through holes (not shown because they are provided corresponding to the supporting rods 17, 17), and are supported by the supporting rods 17 as described above, and assembled to the support portion 2. Then, the base piece 18a of the hook piece 18 is always pressed against the support portion 2 by the urging force based on the elasticity of the leaf spring 19, and is engaged with the window engaging portion 18c 'when the partitioning rod 14 stands up. While maintaining the state, the fastening piece 20 is constantly pressed against the head 17a of the support rod 17.

The fastening piece 20 is provided with the pair of support rods 1.
A pair of long holes 26, 26 are provided to correspond to 7, 17, respectively, and tapered edges 27, 27 are provided so that the plate thickness is gradually increased from one end in the longitudinal direction of each long hole 26 to the other end. The head 17a of the support rod 17 is slid on the side edge along the longitudinal direction of the long hole 26 existing in the tapered edges 27, 27 (by the urging of the leaf spring 19).
Long hole 26 of fastening piece 20, through hole of leaf spring 19, hook piece 1
8 through the through-hole provided in the base piece 18a and the through-hole (not shown) provided in the partitioning rod 14 and screwed into the screw hole 16, and by adjusting the screwing dimension to the screw hole 16, tightening is performed. The elastic force (biasing force) of the leaf spring 19 interposed between the piece 20 and the hook piece base piece 18a is adjusted.

The connecting member 11 of the main piece 1 is connected to the connector 8 provided at the distal end of the pressing wire 7 having the cable pull cord 12 connected to the rear end thereof.
Are connected to each other, and the fastening piece 20 of the leading tool A is
When the thin part is positioned on the support rod 17 instead of the thick part of the fastening piece 20 that forms the tapered edge 27 that has been positioned on the support rod 17 by sliding in the forward direction of the support rod 17, The fastening piece 20, the leaf spring 19, and the hook pieces 18, 18 which are interposed between the head 17 a and the support 2 to the partitioning rod 14 and are in close contact with each other.
The base pieces 18a, 18'a of the ′ ′ are released from close contact, and the respective members 20, 19, 18a, 18
A gap is appropriately formed between a.

Using this gap, a pair of hooking pieces 18, 18 ′ which are installed on the main body piece 1 so as to be opposed to each other.
When the base pieces 18a and 18'a are moved apart along the axis of the support rods 17 and 17 and separated from each other, the hooking portions of the hooking pieces 18 and 18 'which are close to each other are formed. The tips of the pieces 18b and 18'b are separated from each other, and a cable portion 23a of the existing self-supporting cable 23 is provided between the tips.
Gaps are formed to allow relative entry and exit (FIG. 9),
Using this gap, the leading tool A is combined with the self-supporting cable 23 so that the cable portion 23a exists in the recessed portions 21, 21 'formed by the hooking pieces 18b, 18'b. When the partitioning rod 14 is detached from the notch 13 due to the interruption of the bias of the spring 19, after the partitioning rod 14 is engaged with the notch 13, the tightening piece 20 is returned to the original position, that is, the tapered edge 27. The thick part of the support rod 17
When it is moved and returned to be located at the (head 17a) portion, the leading tool A becomes the cable portion 2 of the self-supporting cable 23.
The hook 3a is hooked on the hook pieces 18, 18 'and assembled.

When the leading tool 3 is pushed from the one utility pole side to the other utility pole side, the leading tool 3 presses the call tool 10, that is, the pressing wire 7, so that the main body piece 1 suspends the spiral cable. While inscribing the tool 6,
8, 18 'are cable portions 23 of the self-supporting type cable 23.
a to move to the other one of the utility poles, and at the other one of the utility poles, the yoke tool 10, ie, the pressing wire 7
Is pulled by the pressing wire 7, the tip of the drawstring 12 moves from the one power pole side to the other power pole side inside the spiral cable hanging device 6, and then the pullstring By attaching a cable to the end of the cable 12 (with respect to the self-supporting cable 23) and pulling the tip of the drawstring 12, the cable is easily added and laid between telephone poles.

When a new cable is erected using the hanging wire 22 laid between the utility poles, the spiral cable hanger 6 is sequentially connected to the hanging wire 22 in the same manner as the self-supporting cable 23. The main body piece 1 is fastened and the fastening piece 20 of the leading tool A is connected to the rear end of the main piece 1 and the wire tool 10 or the like.
Is moved (slid) in the forward direction of the main body piece 1 to support the support rod 1.
Instead of the thick portion of the tapered edge 27 located at the 7th portion, a thin portion is located at the support rod 17 to release the tight state of the fastening piece 20 and the like, and the hooking portion piece 18b , 18 '
b using the gap formed between the tips of the hooks 18b, 1b.
The suspension line 22 is provided in the recesses 21 and 21 formed by 8′b.
The leading tool A is combined with the hanging wire 22 so that the hanging wire 22 is provided, and the hanging wire 22 is inserted into the recess 21 on the one hooking piece 18 'side.
When the partitioning rods 14, 14 are pivoted about the support rod 17 so as to be deviated inward, the partitioning rods 14, 14 stand upright through the window 18 c formed in the other one of the latching pieces 18, and rise. When the fastening piece 20 is returned to the original position in the same manner as described above in this state, the hanging wire is connected to the recess 21 on the one hooking piece 18 side. The relative movement engagement of 22 is such that the suspension line 22 is always present between the partition rod 14 and the other hooking piece 18 ′ by the partition rod 14, and the leading tool A is assembled to the suspension line 22, Thereafter, the cable laying work is performed in the same manner as described above.

[0027]

The present invention has the configuration described above,
A leading tool can be provided which can be selectively applied to both suspension wires and support cables having different diameters.

[Brief description of the drawings]

FIG. 1 is a front view.

FIG. 2 is a sectional view taken along line A1-A1 of FIG.

FIG. 3 is a plan view.

FIG. 4 is a partially cut-away enlarged plan view.

FIG. 5 is a bottom view.

FIG. 6 is a sectional view taken along line A5-A5 of FIG. 5;

FIG. 7 is a bottom view in a state where a fastening piece is released.

FIG. 8 is a front view showing a state where the self-supporting cable is assembled.

FIG. 9 is a sectional view taken along line A7-A7 of FIG. 7;

FIG. 10 is a cross-sectional view of a state where it is assembled to a suspension line.

FIG. 11 is a perspective view showing the relationship between a partitioning rod and one of the hook pieces.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main piece 2 Support part 14 Partition rod 17 Support rod 17a Head of support rod 18, 18 'Hook piece 18a, 18'a Base piece 19 Leaf spring 20 Tightening piece 26 Elongated hole 27 Tapered edge

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Kato 2-3-1, Otemachi, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Ryoichi Kaneko 2-3-3, Otemachi, Chiyoda-ku, Tokyo No. 1 Nippon Telegraph and Telephone Corporation F-term (reference) 2H038 CA73

Claims (2)

[Claims] 1. A flexible wire having a length corresponding to the distance between the power poles, which is disposed inside a suspension wire suspended between power poles or a helical cable hanger supported by a self-supporting cable. Connecting the pull cord for cable through a pressing wire made of a material, the main body piece long in the front and back, with the hanging wire or the self-supporting cable interposed in the recess provided on the opposing surface of the hanging piece, In a leading device of a cable pull cord in which a pair of hooking pieces are erected relative to each other, the upper end of the hooking piece is hung on the hanging wire or the self-supporting cable. A support portion is provided along the longitudinal direction, and a pair of front and rear partitioning bars that partition between the recessed portions of the pair of engaging pieces while maintaining the upright state on the supporting portion are attached to the supporting portion so as to be able to be raised and lowered by the supporting rod,
The base piece and the leaf spring of the pair of latch pieces are sequentially superimposed on the support portion and the leaf spring and the fastening piece, and the base piece and the leaf spring have a pair of through holes, and the fastening piece is long in the front-rear direction. Attach by a pair of the support rods in a pair of the long holes, and provide a tapered edge inclined in the front-rear direction of the long hole on the surface of the fastening piece, and lock the head of the support rod to the tapered edge. In addition, the leader of the cable drawstring. 2. The lead device for a cable pulling cord according to claim 2, wherein a male screw portion provided at a tip of the support rod is screwed into a screw hole provided in the support portion.