JPH0667075B2 - Electric wire carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an electric wire carrier used for carrying an extended line (cord line).

In this specification, the term "electric wire" includes not only a normal power transmission line but also a communication cable such as an optical fiber cable, or various wires or ropes used in a wire drawing operation.

<Prior Art> As a conventional electric wire carrier, for example, a transmission line construction document No. 3
Vol. 3 (Transmission Line Construction Technology Study Group; published in December 1987)
, Which are used in the construction method shown on pages 61 to 131 of the above. This electric wire carrier is composed of a carrier body called a wind turbine type and a carrier which is connected to the carrier body via a suspension rope.

<Problem to be Solved by the Invention> One drawback of such a conventional electric wire carrier is that the carrying operation of the electric wire carried by the carrier cannot be automatically released, which makes recovery work difficult.

That is, after the wire extension of the entire wire extension section is completed, after temporarily extending the extended wire while the carrier is still attached, after manually removing the carrier from the wire on each steel tower, the drum field Moreover, it is necessary to collect a small amount of work at the engine site.

Therefore, the present invention is intended to provide an electric wire carrier capable of automatically releasing the carrying of the electric wire by the carrier during the wire drawing.

<Means for Solving the Problem> Specifically, the carrier is composed of a carrier body and a carrier, and the carrier is rotated / opened / closed with a connecting portion for connecting to the carrier body and a mounting portion for the connecting portion as a fulcrum. It is provided with a pair of freely movable doors, a plurality of carriers attached to the tip portions of the pair of doors, and a locking device, and the locking device slides along the pair of doors while enclosing the pair of doors. (EN) Provided is an electric wire carrier including a rectangular frame-shaped door lock frame that is movably arranged and a pair of lock claws that prevent the door lock frame from sliding during normal operation.

<Operation> This electric wire carrier is used as follows, taking an example of the extension of a prefabricated electric wire.

That is, a plurality of prefabricated electric wires for the extended wire section connected by the split wire are sequentially pulled up from the preceding prefabricated electric wire in the corresponding tight wire section and temporary tightening wire is performed while extending the prefabricated electric wire and the used wire carrier of the used wire carrier. It is used for recovery, and the wire carrier is inverted by pulling up the prefabricated wire in the corresponding tight wire section, that is, it is in the upside down state, and in this state, the tensile force applied to the connection part of the carrier is used. Release the lock claw to slide the door lock frame to release the lock on the door by the door lock frame, and by releasing this lock, the door is rotated by its own weight in the inverted state and released to open the prefabricated wire. Of the prefabricated electric wire released from the electric wire carrier and in parallel with the temporary tension wire of the prefabricated electric wire Carry out the recovery of the open pre-carriage at the same time while performing.

Therefore, according to this electric wire carrier, since the carrier can be collected at the same time as the wire drawing, the wire drawing work can be further rationalized.

<Example> Hereinafter, an example of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the electric wire carrier 1 includes a carrier body 2 and a carrier 3.

The carrier body 2 has a roller portion 4 which is a "traveling means" for traveling on a support line S, which will be described later, a connecting portion 5 for attaching to a connecting rope J, which will be described later, and a connecting portion to which the carrier 3 is connected. It consists of six.

The roller portion 4 is provided with a pair of traveling rollers 7, 7 and a lock door 8 for preventing the traveling rollers 7, 7 from coming off the support line S.

The connecting portion 6 is provided at the tip of the guide receiving frame 9, and the guide receiving frame 9 includes a guide receiving roller 10 and a supporter 40 described later.
You will receive a guide as you pass.

Note that the structure of the carrier body is not limited to this example, and any structure having a structure capable of traveling along the support line S by being connected by the connecting rope J is essential.

The carrier 3 has a connecting portion 1 as shown in FIGS.
1, a pair of doors 12, 12, three carrier rollers 13, 13, 13 as a “carrier”, and a lock device 14. The "bearing body" does not necessarily have to be a roller.

The connecting portion 11 includes a connecting lever 17 to which an eye ring 16 for connecting the hanging rope 15 interposed between the carrying body 2 and the mounting portion 18 to which the doors 12 and 12 are mounted is connected. The lever 17 is fitted in the guide cylinder 19 of the mounting portion 18 in a slidable contact state, and slides with respect to the mounting portion 18 as indicated by arrow X. The connection lever 17 is usually a flange-shaped lock claw release body 20 integrally formed with the connection lever 17 and a nut-shaped receiving body 21 attached to the lower end of the attachment portion 18.
It is in a state of being pulled in the Y direction shown by the arrow by the spring 22 provided between and.

The doors 12, 12 are mounted on the mounting portion 18 as described above, but specifically, they are mounted by the bolts and nuts 23, and the mounting site by the bolts and nuts 23 is used as a fulcrum. It is designed to rotate like Z.

The carrier roller 13 has a gentle truncated cone shape, and two of the front and rear are fixed to the one door 12 and one of the different directions is fixed to the other door 12, so that the carrier groove 24 is formed.
Is formed. Regarding the inclination angle of the carrying roller 13,
The load of the electric wire W acts to open the doors 12 and 12, and at the same time, if the load is too large, the force for opening the doors 12 and 12 becomes too large, and the door lock of the locking device 14 described later is performed. There is a relation that the slidability of the frame 26 is deteriorated. Needless to say, the number of carrying rollers 13 is not limited to three.

The lock device 14 includes four rollers 27, 27, ..., Which are provided in pairs on the side surface, and two rollers 28, 28, which are provided on the front and rear surfaces, one pair on the side surface. Connection frame 29,
Door lock frame 2 combined in a square frame shape by 29, ...
6, a pair of locking claws 30, 30, and doors 12, 1
2, a pair of upper stoppers 31 and 3 provided respectively
1 and a pair of lower stoppers 32, 32.

The door lock frame 26 is arranged so as to surround the doors 12 and 12 and is slidable in the direction of the arrow U (up and down direction). The upper and lower stoppers 31, 31, 32 and 32 are used for the upper limit of sliding. And the lower limit has come to be regulated. Further, the lock claws 30 and 30 are attached to the attachment portion 18 together with the doors 12 and 12 by the above-mentioned bolts and nuts 23, and are configured to rotate as indicated by an arrow V, and twists not shown respectively. It is biased in the arrow L direction by a spring.

Incidentally, reference numeral 33 in FIG. 4 is a regulating roll for preventing the electric wires from touching the corners of the doors 12, 12.

The electric wire carrier 1 operates as follows.

That is, the electric wire carrier 1 is reversed by the state described later,
That is, when a certain tension or more is applied to the hanging rope 15 in the upside-down state, the connection lever 17 slides in the direction of the arrow M against the spring 22, and the lock pawl release body 20 causes the lock pawl 30 to move. , 30 are rotated to the state shown in FIG. Then, the door lock frame 26, which has lost the support by the lock claws 30, 30, is locked by the stoppers 31, 3.
It falls by its own weight until it hits 1 and stops. As a result, the rollers 27, 27 of the door lock frame 26 become
The state where the doors 12 and 12 are lower than the portion of the bolt / nut 23 which is the fulcrum of rotation, and the doors 12 and 12 are opened by the weight of the doors 12 and 12 as shown in FIG. 3 is released from the electric wire W.

Hereinafter, a prefabricated construction method using this electric wire carrier 1 will be described.

Extension of Support Line and Connecting Rope (FIG. 6) The support line S and the connecting rope J are extended over the entire extension section, the support line S is supported by the support device 40, and the connection rope J is supported by the support device. Pass through 40.

Here, as shown in FIGS. 7 and 8, the support device 40 includes a suspension portion 41 for suspending the steel tower T and a support wire S.
Support portion 42 for supporting the wire, guide wheels 43, 43 for guiding passage of the connecting rope J, and the wire carrier 1
Guide frame 44 for guiding the entry and passage of
44, regulating rolls 45, 45 for preventing the electric wires from touching the corners of the support device 40, and an electric wire passage portion 46, and the electric wire carrier 1 is in the state shown in FIG. Will pass through.

Conveyance / drawing wire (Fig. 6) In this conveying / drawing method, prefabricated electric wires Wi (I is an integer) are formed by cutting in advance to a length corresponding to the tight wire section and connecting the retention clamps C to both ends.

First, the front prefabricated electric wire W ₁ is carried by a plurality of electric wire carriers 1, 1, ... In the drum field, and these electric wire carriers 1, 1 ,.
The connection rope J is wound on the engine field E side while being connected to the connection rope J in m).

Next, when the rear end of the prefabricated electric wire W ₁ comes out of the electric wire drum H, a split wire R is connected to the retracting clamp C at the rear end of the prefabricated electric wire W _1, and the split wire R is set to a predetermined length (usually the same as the prefabricated electric wire W _1). (Corresponding to the length of the prefabricated wire W ₁ ).

Then, at the rear end of the split wire R, the next prefabricated electric wire W ₂
Of the prefabricated electric wires Wi corresponding to the extended section, and the same operation is repeated.

When the prefabricated electric wire W _{1 at the} beginning reaches the corresponding tight wire section, the prefabricated electric wire W ₁ is separated and both ends thereof are prepared in advance and supported by the semi-assemblies K, K (No. 9
Figure).

Then, the semi-set K, pulling the prefabricated wire W ₁ by K, the wire carrying the prefabricated wire W ₁ carriage 1,1,
... is reversed. Then, as described above, the doors 12 of the carrier 3 are opened, and the electric wire carrier 1 is released from the prefabricated electric wire W (FIG. 10).

Conveyance and extension parallel to the temporary binding wire About the prefabricated electric wire W _{1 at the} beginning Electric wire carrier 1, 1, ...
When the pre-fabricated electric wire W ₁ is moved to the corresponding steel tower arm TA and the temporary tightening work is carried out, the electric wire carrier 1, 1 ... At the same time as collecting the ... In the engine field E, the next prefabricated electric wire W ₂ is made to reach the corresponding tight line section, and the same work as the leading prefabricated electric wire W ₁ is performed.

Repeat for each prefabricated wire Repeat the above work for each subsequent prefabricated wire to complete the wire extension in all sections.

<Effects of the Invention> The electric wire carrier according to the present invention, as described above, includes the carrier body and the carrier, and the carrier has a connection portion for connecting to the carrier body and a mounting portion for the connection portion as a fulcrum. The lock device includes a pair of doors that can be freely rotated and opened / closed, a plurality of carrying rollers attached to the leading ends of the pair of doors, and a lock device. It is equipped with a rectangular frame-shaped door lock frame that is slidable along the door and a pair of lock claws that prevent the door lock frame from sliding during normal operation. When the lock of the door by the door lock frame is released and the door is opened, the carrying of the electric wire is automatically released.

Therefore, according to this electric wire carrier, it is not necessary to open the electric wire carrier and the wire carrier can be recovered at the same time as the wire drawing, so that the wire drawing work can be further rationalized.

[Brief description of drawings]

FIG. 1 is a schematic side view of the electric wire carrier, FIG. 2 is a schematic side view seen from the direction of arrow II in FIG. 1, and FIG. 3 is a schematic side view including a partial cross section of the carrier. FIG. 4 is a schematic side view including a partial cross section as seen from the direction of arrow IV in FIG. 3, FIG. 5 is a schematic side view of the carrier which is inverted to be in a carrier open state, and FIG. Fig. 7 is a side view showing the outline of the wire drawing work. Fig. 7 is a schematic side view of the support. Fig. 8 is a schematic side view seen from the direction of the arrow VIII in Fig. 7. Fig. 9 is a prefabricated electric wire. FIG. 10 is a side view showing the outline of the pulling up work of the above, and FIG. 10 is a side view showing the outline of the pulling up work of the prefabricated electric wire and the opening work of the carrier. 1 ... Electric wire carrier 2 ... Carrier body 3 ... Carrier 11 ... Connector 12 ... Door 13 ... Carriage roller 14 ... Lock device 15 ... Door lock frame 30 ... Lock claw

Claims (1)

[Claims] 1. A carrier body and a carrier, wherein the carrier comprises a connecting portion for connecting to the carrier body, and a pair of doors which are rotatable and openable / closable with a mounting portion for the connecting portion as a fulcrum. It is equipped with a plurality of carriers attached to the front ends of a pair of doors and a lock device, and the lock device is a rectangular shape that surrounds the pair of doors and is slidable along the pair of doors. An electric wire carrier including a frame-shaped door lock frame and a pair of lock claws that prevent the door lock frame from sliding during normal operation.