JPS59148505A - Method of installing aerial transmission line - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved overhead line construction method for power transmission lines using a so-called non-reversible hanging wheel.

The applicant previously proposed a method for very efficiently connecting overhead power lines under low tension using a hanging wheel as shown in FIG. (Japanese Patent Application No. 53-10870) By making the hanging wheel a special structure, the process of reversing the hanging wheel, which was unavoidable in the conventional hanging wheel construction method, is omitted, and the A3 This is an extremely simple and highly efficient method for extending electric wires, and by eliminating the need for the work of reversing the metal wheels, which is said to be a masterpiece and requires a high level of skill, it is possible to improve the hanging metal method. The aim is to achieve simple simplification.

The non-reversible hanging wheel referred to herein basically has a configuration as shown in FIG. 1, for example. That is, a space 3 is formed between the upper sheave 1 and the lower sheave 2, and this space 3
A hanging wheel 10 is constructed by combining a plurality of unit frames (which may be two or more) each configured such that the filamentary body W1 or W2 can freely move between the sheaves 1 and 2. . Next, the process of connecting electric wires using such a hanging wheel 10 will be explained with reference to FIGS. 2 to 7.

First, the main cable wire A720, which will be used to deploy metal wheels between the towers covering the overhead wires, will be handed over. The wire can be replaced with lighter ones such as nylon rope in order.

Figure 2 shows the main cable wire A' 2 which was delivered in this way.
This figure shows the metal wheel 10.10 being deployed on top of 0, 30 is a self-propelled carrier, and 40 is metal wheel 1.
A spacing wire A7.50 that maintains a spacing of 0.10 is a pull rope that is extended over the lower sheave of the metal wheels 10,10.

Specifically, metal wheels 10 and 10 are carried to each steel tower, connected by the spacing wire 40 on one of the steel towers T1 in one span, and lined up on the main rope wire 2o as shown in FIG. Attachment (Pull this out sequentially toward the rIi tower 1-2 on the opposite side using the carrier 30. If the span spans multiple spans, such metal wheel expansion will be performed for each span.

Figure 3 shows the state in which the metal wheels 10°10 are deployed between the steel towers, and the right side view of Figure 3 shows the positional relationship between the main rope wire 2o and the pull loaf 50 in that case. It shows.

That is, although the sheaves themselves are omitted, there is an upper sheave (FIG. 1) of one frame of the metal wheel 1o on the main rope wire 20, and a lower sheave (first sheave) of another frame.
A pulling lobe 50 extends above FIG. 2).

Next, the electric wire 1oo is connected to one end of the pull rope 5o, and the pull rope 50 is taken off, thereby replacing the pull rope 50 with an electric wire 100 as shown in FIG.

The diagram on the right side of FIG. 4 shows a state in which the main rope wire 20 is stretched on the upper sheave of one frame of the metal wheel 10, and the electric wire 100 is extended as described above to the lower sheave of another frame. There is.

Once the electric wire 100 has been extended, a tension is applied to the electric wire 100 to tension it, and the metal wheel 10 is moved from the lower sheave to the upper sheave, and at the same time, the tension on the main rope wye puller 720 is loosened and it is moved onto the lower sheave. move it. In addition, it becomes possible for the electric wire 100 to fulfill the role of the conventional main rope wire A720.

Then, another electric wire 110 is connected to one end of the loosened main rope wire 20, and the main rope wire Al2O is pulled off and replaced with the electric wire 110 as shown in FIG. Fifth
The diagram on the right side of the figure shows wires 100 and 11 on the gold wheel 1o.
0 positional relationship is shown.

Next, tension is applied to the electric wire 110, and it is pulled up to the upper sheave of the metal wheel 1°. As a result, the two extended electric wires are pulled up and there is nothing on the lower sheave of the metal wheel 1o. (Figure 6 right view) Then electric wires 100, 11
0 in place of the main rope wire, connect the metal wheel 10 as shown in Fig. 6.
．． If you pull back the wire 10 and remove it, the wire 100 will be removed later.
, 110 remain, and by tightening them and securing them to the insulators, the overhead line is completed.

However, using the overhead wire method described above, J5 carried the gold wheels to the tower for each span, and placed them separately.

Having to work on the tower and unroll the gold wheels in each span is extremely complicated to handle, and there are also problems in terms of labor, safety, and consumption per servant. Furthermore, depending on the steel tower, the name of the station where the gold car is brought in may be a national railway.

Therefore, instead of deploying the gold wheel for each span as described above,
If it were possible to deploy metal wheels over multiple spans at once from the drum station toward the engine station, as is the case with ordinary wire extension work, extremely efficient catenary lines could be created.

The present invention has been made in view of the above-mentioned circumstances, and its gist is to extend the first main rope wire and the first pull lobe over multiple spans of the multiple steel towers to be wired, and 1. The main rope wire is supported by the support of the steel tower so that the unfolding roller of the hanging fitting described later can pass therethrough, and on the other hand, one end of the line extension section has sheaves above and below, and there is a space between the sheaves. A plurality of unit frames are combined so that the filament can move between them, and a plurality of hanging wheels are prepared to which deploying rollers are appropriately attached, and these hanging wheels are connected by connecting lobes. The tip of the rope is connected to the first pulling rope, and while extending the button 2 main rope wire and the second pulling rope onto the lower sheave of the hanging wheel, the unfolding roller of the hanging wheel is connected to the first pulling rope. The hanging wheel is once spread out across multiple spans so as to run on the main rope wire, and after the extension is completed, the extended second main rope wire is tensioned and transferred to the upper sheave, and then attached to the end of the second pull rope. connects the electric wires, replaces it with an electric wire, then tensions the replaced electric wire and transfers it to the upper sheave, loosens the tension on the M2 main rope wire and transfers it to the lower sheave, and then removes the second main rope wire. A method for overhead power transmission lines involves connecting another wire to the end of the wire, replacing it with a wire, hoisting up the replaced wire, and recovering the hanging wheel.

The following is a sequential explanation based on examples.

FIG. 8 is a front view showing an example of the hanging wheel 10 used in the overhead wire construction method according to the present invention.

Although the shape has changed somewhat, the same reference numerals as in FIG. 1 indicate the same configuration. The difference from FIG. 1 is that there is a developing roller 47 attached to a support shaft 5 at the upper center of the metal wheel 10.

Therefore, this developing roller 4 is supported by a hook-shaped support 210 on the arm 200 of the steel tower.
The main rope wire 60 (runs) and this support 210
It is now possible to pass through. As shown in FIG.
It is formed so that it extends slightly further than the unfolding roller 4.
It is best to have it act as a stopper to prevent the wheels from falling off.

In the present invention, as shown in FIG. The first main rope Y~760 and the first tow rope 7o are delivered between the pierced drum station and the engine station E.

After the first main rope wire 1760 has been extended, the main rope wire 60 is attached to a hook-shaped support 210, as shown in FIG. fixed in the state. For this fixing method, an appropriate method such as clamping with two base clamps may be used.

On the other hand, the hanging wheels 10.10, which are spread over the plurality of spans, are carried into the drum station. Unlike the conventional example, a hanging wheel is not carried in for each tower span.

The metal wheels 10 and 10 carried into the drum yard are not shown in Fig. 10. Each of the metal wheels is connected by a spacing wire A740, and its tip is first connected to the first pulling lobe 70 of the extended wire. . In this state, the unfolding rollers 4 of the metal wheels 10 and 10 move on the first main rope wire t60, and the respective metal wheels 1
On the lower sheaves 2, 2 of 0.10 is the second main rope wire 6o.
- and the second pull rope 80 are extended, and the metal wheels 10 and 10 are sequentially taken over by the first pull rope 7° and deployed on the first main rope wire 60. The metal wheel 12゜12 used when first extending the first pull rope 70 is the metal wheel 10,1.
It is sufficient to remove them one by one as the expansion of 0 progresses.

FIG. 11 shows how the metal wheel 10.degree. 10 is continuously deployed at once over a plurality of spans from the drum j8D to the engine station E as described above.

After this deployment is completed, the distance maintaining wire 40 of the metal wheel 10.10 is fixed to the steel tower, tension is applied to the second main rope wire 60= extended above the lower sheave 2.2, and the upper sheave 1 is ,Put it up on the 1st side.

FIG. 12 shows a state in which tension is applied to the second main rope wire 60- in this manner. The second main rope wire 60' moves to the upper sheave 131, and due to the tension thereof, the wires 4, 4, which have been on the first main rope wire 60, are moved upward away from the first main rope wire 60. In other words, the metal wheel 10° 10 is supported by the second main rope Y~760-.

Since the second pulling roller 80 is still on the lower sheaves 2, 2, an electric wire (not particularly shown) is connected to one end of the second pulling roller 80, and the second pulling rope 80 is pulled to the electric wire in the same manner as in FIG. Change. Thereafter, tension is applied to the replaced electric wire according to the same procedure as in FIGS. 5 and 6 above, the second main rope wire 60- is loosened, another electric wire is connected to one end of the loosened second main rope wire 60'', and The second main rope wire 60- is replaced with another electric wire. Then, tension is applied to the other electric wire and stretched up, and these tensioned electric wires are used instead of the main rope wire (thus, the metal wheel 10.10 is recovered).

The first main rope wire 60 is used to collect the gold wheel 10.10.
cannot be used, so they have to be collected at each tower, but in this case, the gold car 10.10 is simply taken down from the tower (), so there is no problem if you do it for each tower. The unfolding roller 4 is the first main rope wire 6
If the structure is such that it does not deviate from 0, the gold wheel will be 10.
．． It is also possible to return the drum 10 to the initial drum ID and collect it.

Although not shown in the above, it would be possible to pull out the take-up rope for collecting the metal wheel 10 when the metal wheel 10 is deployed (instead of on the lower sheave). It is preferable to provide a holding hole adjacent to the spacing wire so that it can be held and aligned with the spacing wire.

The gold wheel can be easily collected by pulling the collection rope at the time of collection. A pipe of a predetermined length may be fitted into the take-up rope holding hole to prevent the metal wheels from coming into direct contact with each other.

After collecting the gold wheel, the first main rope wire 60 will remain at the end, but if this first main rope wire is moved to the top of the tower and used as a pull wire for extending the ground wire, it will be effective. You can take advantage of this.

As described in detail above, according to the overhead wire method of the present invention, it is possible to continuously roll out the metal wheel for the non-reversible hanging method over a desired plurality of spans at once, and also The extension of the line will be carried out for 1q without any hindrance,
Not only has it become possible to further expand the scope of application of the non-inverted hanging metal construction method, but it is also significant in that it eliminates the need to carry gold wheels to each steel tower and work on the tower for that purpose, greatly reducing work time. We have achieved a huge improvement in safety, and the effect it will have on the industry is immeasurable.

[Brief explanation of the drawing]

Figure 1 is a front view showing an example of a non-reversible cash withdrawal box, Figures 2 to 7
The figure is an explanatory view showing a method for hanging electric wires using such a hanging wheel, FIG. 8 is a front view showing an example of a hanging wheel used in the overhead line method according to the present invention, and FIGS. 9 to 12 are FIG. 2 is an explanatory diagram showing an overhead wire method according to the present invention. 1: Upper sheave, 2: Lower sheave, 3: Space, 4: Deployment roller, 10: Hanging wheel, 20: Main rope wire v130: Carrier, 40: Spacing maintaining wire, 60: First main rope wire,
60-: Second main rope wire, 70: First pull rope, 80:
2nd draw lobe, 'fi5121] 56 m too, rt. Ga 7 l J 6

Claims (1)

[Claims] The first main cable wire A spans multiple spans of multiple towers.
7 and the first pulling lobe are extended, and the first main rope wire A-1 is supported on the support of the steel tower so that the deployment roller of the hanging wheel, which will be described later, can pass therethrough. , a plurality of unit frames are combined, each having sheaves on the top and bottom, and a space between the sheaves so that the filament can move between the sheaves, and an appropriate unfolding roller is attached to the frame. A plurality of hanging wheels are prepared, and these hanging wheels are connected by connecting lobes, the tips of which are connected to the first rope, and a second main rope wire and a second rope are connected to each other on the lower sheave of the hanging wheels. The hanging wheel is continuously deployed over multiple spans at once by forcing the deploying roller of the hanging wheel to run on the first main rope wire while extending the pulling lobe, and after the deployment is completed. The second main rope wire that was extended later is tensioned and moved to the upper sheave, an electric wire is connected to the end of the second main rope, and this is replaced with an electric wire.Then, the replaced electric wire is stretched and moved to the upper sheave. At the same time, the tension on the second main rope wire is loosened and transferred to the lower sheave, and another electric wire is connected to the end of the second main rope wire to replace it with an electric wire, and the replaced electric wire is stretched up and hung. How to use overhead power lines to recover cars.