JPH0710135B2 - Grip type wire carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a grip type electric wire carrier used when the extension of a new wire or the removal of an old wire is performed by a transfer method.

In this specification, the "electric wire" includes not only an ordinary power transmission line but also a communication cable such as an optical fiber cable.

<Prior art> As a conventional electric wire carrier, for example, page 115 of an overhead wire construction enforcement standard manual (revised in October 1987; published by Denki Shoin) or transmission line construction materials No. 33 (transmission line construction technology Study Group;
The ones shown on pages 61 to 131 of December 1987) are known. 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.

<Problems to be Solved by the Invention> By the way, the transfer method is to extend or remove an electric wire with as little effort as possible, and to convey the electric wire by an electric wire carrier. .

However, in the case of the conventional electric wire carrier, since it has a structure for simply carrying the electric wire, there are some problems in the following points.

That is, since the electric wire is simply placed on the carrier of the electric wire carrier, it moves finely back and forth on the carrier during transportation, and as a result, it is repeatedly rubbed by the carrier or between the electric wire carriers. Due to the relationship with the catenary curve generated in step 3, the portion supported by the carrier is likely to be repeatedly bent.

Also, in the case of removal of the old line that has deteriorated considerably, a situation may occur in which the old line is cut during the removal, but in that case the old line that has been cut hangs down drastically, and It will damage the work etc.

Therefore, the present invention is intended to provide a grip type electric wire carrier in which the above-mentioned inconvenience does not occur when the electric wire is firmly gripped and conveyed.

<Means for Solving the Problem> Specifically, a grip type electric wire carrier including a carrier body and a gripper connected to the carrier body via a hanging rope, wherein the gripper is a wire A receiving body that supports one side surface, a grip claw that is rotatable in the extending direction of the electric wire on the receiving body and is provided in a state of facing the receiving body, one end of which is connected to the base end of the grip claw and the other end Is equipped with an operating lever connected to the hanging rope and an urging means for urging the grasping claw to rotate in the opening direction.When the hanging rope is tensioned, this tension force is applied to the grasping claw via the operating lever. As a result, the gripping claw rotates in the gripping direction against the biasing force of the biasing means to grip the electric wire with the receiving body, and when the hanging rope loosens, the gripping force is gripped by the biasing force of the biasing means. A grip type electric wire in which the claws rotate in the opening direction to release the electric wire grip. Provide a carrier.

<Operation> In this grip type electric wire carrier, the electric wire is firmly gripped by the gripper, and the electric wire is conveyed in a firmly fixed state. It never happens. Further, in this grip type electric wire carrier, since the electric wire is grasped and released by operating the grasping claws by tensioning or loosening the hanging rope, the workability is very excellent.

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

As shown in FIGS. 1 and 2, a grip type electric wire carrier 1
Is composed of a carrier body 2 and a gripper 3.

The carrier body 2 is a connection for connecting a roller portion 4, which is a "traveling means" for traveling on a support rope S, which will be described later, an attachment portion 5 for attaching to a connecting rope J, which will be described later, and a gripper 3. It consists of part 6. The roller portion 4 is provided with a pair of traveling rollers 7, 7 and a lock door 8 for preventing the roller portion 4 from coming off the support rope S. Further, the connection portion 6 is provided at the tip of the guide receiving frame 9, and the guide receiving frame 9 serves as a guide when the supporter 24, which will be described later, passes through.

As shown in FIGS. 1 to 6, the gripper 3 is connected to the carrier body 2 via a hanging rope 11 and serves as a “receiver” with a pair of receiving rollers 12 and 12, and a pair of receiving rollers. The gripping body 15, which is composed of the gripping claws 13 and 13 and a pair of operating levers 14 and 14 for operating the gripping claws 13 and 13, and a connecting rod 16
Also, the electric wire W is firmly held by the pair of receiving rollers 12 and 12 and the pair of gripping claws 13 and 13.

More specifically, the pair of gripping claws 13 and 13 are connected and fixed to the lever shafts 18 and 18, respectively, and the lever shafts 18 and 18 are rotated by the actuating levers 14 and 14 as indicated by arrow X. It is adapted to rotate as indicated by an arrow Y in response to the movement.

That is, one end of each of the actuating levers 14 and 14 has the lever shaft 1
It is connected and fixed to 8 and 18, and the other end side is supported by the shaft pin 19 at the tip of the connecting rod 16 via the elongated holes 20 and 20, respectively. When the suspension rope 11 connected to the connecting rod 16 is in a loose state as shown in FIG.
Although 14 and 14 are in the state shown by the imaginary line in FIG. 3, when the suspension rope 11 is tensioned as shown in FIG. It is as shown by the solid line. And along with this, 18,
18 rotates as indicated by arrow X, and accordingly, the gripping claws 13, 13 rotate from the state indicated by the imaginary line to the state indicated by the solid line as indicated by arrow Y to move the electric wire W by the weight of the electric wire W itself. It will hold firmly.

Reference numeral 21 in FIG. 3 is a spring for urging the gripping claws 13, 13 to be in the open state, that is, the state shown in FIG. 5, and 22 in FIGS. 2 to 4 is a part of the frame body 17. The door portion that forms the wire is used when the gripper 3 is attached to the electric wire W as described later.

Next, a case where the grip type electric wire carrier 1 is used for removing the old wire will be described.

First, the support rope S and the connection rope J are extended in the necessary section, and then the grip type electric wire carrier 1 is unfolded.

The expansion of the grip type electric wire carrier 1 is divided into the expansion of the carrier main body 2 and the expansion of the gripper 3, and both expansions are performed at the same time.

Development of carrier [Fig. 7 (a)] While the carrier bodies 2 are attached to the connecting ropes J at predetermined intervals (usually 20 to 30 meters) on the steel towers T, T, ... The rope J is gradually wound up at the engine field E, and the carrier main body 2 is deployed in each steel tower section.

The supporting device 24 in the figure includes a hanging part 25 for hanging on a steel tower T, a supporting part 26 for supporting a supporting rope S, a guide wheel 27 for guiding passage of a connecting rope J, and a grip type electric wire. It is provided with a guide frame 28 for guiding the invasion of the carrier 1, and supports the support ropes S and the connecting ropes J.

Deployment of gripper [FIG. 7 (a)] As described above, it is performed simultaneously with the deployment of the carrier body 2.
The gripper 3 is connected to each carrier main body 2 to be deployed on the steel tower T via the hanging rope 11, and the gripper 3 is attached to the old line Wo to be removed. At this time, since the old line Wo is still stretched, the interval between the carrier body 2 and the old line Wo is narrow, the hanging rope 11 is slack, and the gripper 3 is shown in FIG. As shown in FIG. 5, it is in an inverted state due to its own weight balance.

Removal of old line [Fig. 7 (b)] Remove the old line Wo to which the grippers 3, 3, ... are attached as described above from the towers T, T ,. Then, the old line Wo is slackened so that the entire weight of the old line Wo is applied to the grippers 3, 3, ..., As a result, as shown in FIGS. 7 (b) to 6, grippers 3, 3 ,. Is reversed and the hanging ropes 11, 11, ...
Gets nervous.

Then, when the suspension rope 11 is tensioned, the gripping claws 13 and 13 are closed as described above, and the old line Wo is formed between the holding rollers 12 and 12.
Hold firmly with the weight of the old wire Wo itself.

Removal of the old wire [Fig. 7 (c)] As described above, the old wire Wo is firmly gripped by the grippers 3, 3 ,. The old line Wo is removed by collecting the electric wire carriers 1, 1, ... On the drum side D side.

At this time, the gripping type electric wire carrier 1 passes through the supporting device 10. At that time, as shown by an imaginary line in FIG. 9, the guide frame 28 of the supporting device 24 causes the gripping type electric wire carrying device 1 to pass through.
The guide receiving frame 9 is guided.

The removal of the old line in this way has the following advantages.

In other words, the old wire Wo is hardly bent or tensioned because it is conveyed and removed by the grip type electric wire carrier 1, 1, ... while being firmly gripped by the grip devices 3, 3 ,. Even old lines that have deteriorated can be removed without the trouble of cutting. Further, even if the old wire Wo is cut, since the grippers 3, 3, ... firmly grip the old wire Wo, the old wire Wo is separated by the space between the grip type electric wire carriers 1, 1, .... Since it does not hang down more than a minute, it is possible to continue the removal work as it is without affecting the traffic obstacles below it or the workpieces on the ground, and there is no delay in the removal work.

Further, since the old wire Wo is gripped by operating the gripping claws 13 and 13 by the tension of the hanging rope due to the removal of the old wire Wo from the steel tower, the workability is very excellent.

When a new wire is extended using the grip type electric wire carrier 1, as shown in FIGS. 10 (a) and 10 (b), the gripper 3 that grips the new wire Wn in the drum field D is used. The carrier body 2
, And a new rope Wn is conveyed and extended while the connecting rope J, which is a chain of the carrier bodies 2, 2, ... Is wound up at the engine field E.

Then, when the wire drawing is completed, temporary lifting is performed, and the gripping claws 13 and 13 of the gripping device 3 are opened in the opposite state to that described in the setting of the gripping type electric wire carrier 1 in the old wire removal described above. The grip type electric wire carriers 1, 1 ... Are collected on the drum field D side.

Regarding the extension of the new wire performed in this way, the advantage of being able to better achieve the purpose of the equipment extension, which is to try to extend the wire with as little effort as possible, that is, to firmly grasp the wire, It has the advantage of being able to extend the wire without causing strain on the electric wire as in the conventional electric wire carrier described in the section of the problem, and also has the advantage of obtaining excellent workability as in the case of removing the old wire. is there.

<Effects of the Invention> The gripping type electric wire carrier according to the present invention is as described above, and since it firmly grips and conveys an electric wire, it causes a strain on the electric wire as in a conventional electric wire carrier. It has the effect that it can better achieve the purpose of the transport method, which is to extend the electric wire as effortlessly as possible, and to operate the gripping claws by tensioning or loosening the hanging rope to grip or release the wire. Since it is designed to be performed by, there is also an effect that excellent workability can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic side view of a grip type electric wire carrier, FIG. 2 is a schematic side view seen from the direction of an arrow II in FIG. 1, and FIG. 3 is a schematic side view showing a gripper. Is a schematic plan view seen from the direction of the arrow IV in FIG. 3, FIG. 5 is a schematic side view showing the state of the gripper when the hanging rope is loose, and FIG. FIG. 7 is a schematic side view showing the state of the gripper in the state of being bent, FIG. 7 is a side view showing the outline of the work of removing the old line, FIG. 8 is a schematic side view of the supporter, and FIG. 9 is FIG. A schematic side view from the direction of the arrow IX in the middle,
FIG. 10 is a side view showing the outline of the work for drawing a new line. 1 …… Grip type electric wire carrier 2 …… Carrier body 3 …… Grip device 11 …… Suspension rope 12 …… Receiving roller (receiving body) 13 …… Gripping claw

Claims (1)

[Claims] 1. A grip type electric wire carrier comprising a carrier main body and a gripper connected to the carrier main body through a hanging rope, wherein the gripper is a receiving member for supporting one side surface of an electric wire, and a receiver. A gripping claw provided so as to be rotatable in the extending direction of the electric wire on the body so as to face the receiving body, an operation in which one end is connected to the proximal end of the gripping claw and the other end is connected to a hanging rope. The lever and the biasing means for biasing the gripping claw to rotate in the opening direction are provided, and when the suspension rope is tensioned, this tension force is transmitted to the gripping claw via the actuating lever, whereby the gripping claw is biased. When the hanging rope is loosened by gripping the electric wire with the receiving body by rotating in the gripping direction against the biasing force of the means,
A grip type electric wire carrier in which the grip claw is rotated in the opening direction by the biasing force of the biasing means to open the grip of the wire.