JPS6014567B2 - Hanging wheel for multi-conductor wire extension - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hanging wheel for efficiently extending a multi-conductor power transmission line.

In recent years, the size of overhead power transmission lines has increased, and the tension on the overhead wires becomes excessive with the conventional overhead wire method. Therefore, a large number of hanging wheels are rolled out, and the wires are supported by the hanging wheels while the wires are extended. The so-called hanging metal method, in which lines are extended without any cables being installed, is attracting attention and being adopted.

However, this hanging metal construction method, for example,
As disclosed in , it is not suitable for extending multi-conductor power transmission lines because it requires special construction methods such as reversing the hanging wheel and replacing the pull wire, and is therefore not suitable for extending multi-conductor transmission lines. It stayed in.

The present invention firstly provides a new hanging wheel that does not require reversing the hanging wheel, and secondly provides an improved hanging wheel that can freely extend multi-conductor wires. This is what we are trying to provide.

A specific example will be explained below with reference to the drawings.

FIG. 1 is a front view showing an embodiment according to the present invention, and FIG.
The figure is a side view thereof. Reference numeral 1 designates the frame of the hanging wheel K, which is generally configured in a V-shape or U-shape as seen in FIG.

The V and U basically mean that the inner surface should be a free space, but in a strict sense, it does not mean that it has to be in such a shape. At the lower inner side of the frame 1, there is a wire roller 2 which is attached to a rattan 3 and rotates.

It goes without saying that this roller 2 can be configured in a plurality depending on the case. Further, main element rollers 30 and 30' are rotatably mounted by mounting balls 29 at positions above the frame 11 that are balanced on the left and right sides.

This is because the gold wheel is run on the main elements 28, 28' stretched between the steel towers and is unrolled. -Fu- is. In the hanging metal construction method, such a hanging wheel K is kept running at a predetermined interval on the main millet wire and is fed out, and at the same time as this feeding out, electric wires and other necessary wires are placed on separate rollers installed in the safe. This is an attempt to draw out and extend the wire. That is, in the figure, 23 and 23' are the distance maintaining wires of the hanging wheel K that is fed out in this way, and the holding metal fittings 24
, 24', the metal wheel is removably fixed to the metal wheel, so that the metal wheel is continuously rolled out onto the main elements 28, 28'. The guide rollers 9, 12 and 18, 21 are two-part guide rollers provided on the inner side of the frame 1.

As shown in the figure, the two-piece lo-fu consists of a regular-shaped roller cut into rounds at the center of the lo-fu groove.

FIG. 4 shows its detailed configuration.One piece 9, which is divided into two, is rotatably attached to the frame side through a mounting rod 101, and the other piece 12 is attached to the frame with a mounting pin 6 in a hinge shape. Both pieces 9 are mounted rotatably by the mounting shaft 13 on the side of the attached plate-like body 5.
, 12 can be combined to form a roller. Reference numeral 8 denotes a spring shaft on which the coiled spring 7 is aligned, and there is a nut 32 fixed at the end with a cotter pin, and washers 31, 31 are attached to the spring shaft 8, respectively.
' is loosened as shown in the figure, and the spring scales 8 are suspended by the spring force of the spring 7.
4 is pressed against the frame 1 side, and as a result, the plate-shaped body 5 to which the bracket 34 is fixed is also pressed against the frame 1 side, and the rollers 9 and 12 come into contact with each other to constitute a guide roller.

Therefore, the spring force of the spring 7 can be supported as it is when the drawn wire 11 with a small diameter is placed on the roller due to its own weight in a normal state, but for example, as shown in FIG. If the wire 4, which has a larger wire diameter and heavier weight than the rolled wire, is placed on top of it, it will no longer be supported by the spring force of the spring 7, as shown in FIG. two rollers on
The spring biasing force is selected to be strong enough to push the pieces 9 and 12 apart and cause the wire 4 to fall from the gap. 14, 14', 15, 15', 16, 16', 17, 1 in Figure 1
7', 19, 22, etc. are provided in correspondence with the appropriate structure in FIG. 4, so no explanation is necessary. 25 is a main rope wire derailment prevention door.

The door piece 26 is attached to a pin 27 in the form of a hinge and is biased to close by a clip spring or the like (not shown). Next, a case will be described in which a multi-conductor power transmission line is extended using the above-mentioned hanging wheel according to the present invention. The main millet wire 28 shown in Fig. 6 is installed between the steel towers in the extended line section in advance.
is stretched out.

First, an engine-driven carrier 40 is used as a wire extension end, and terminals such as the electric wire 4, extension wires 11 and 20, and spacing wire 23 are attached to the carrier 40. Hanging wheel K, K・
... are fixed to the interval holding wire 23 at predetermined intervals and are drawn out, and as they are drawn out, the electric wire 4 and the extended wires 1 1, 20 are supported on the rollers and are fed out. . When the hanging wheels are unwound onto the wire extension section in this way, the positional relationship between them is as shown in FIG. The drawn wires 11, 11', 20, 20' are supported on the rollers.

From this state, the electric wire 4 is temporarily raised and supported by a predetermined steel tower arm.

Since the electric wire roller 2 becomes empty as a result, another electric wire 4' (not shown) is connected to the end of the stretched wire 11, and the stretched wire 11 is taken off. Then, the electric wire 4' should be replaced on the two-part rollers 3 and 12, but as mentioned above, the two-part rollers 9 and 12 are not configured to be able to support the weight of the electric wire 4'. Therefore, the two-split type lofts 9 and 12 are separated and the electric wire 4' falls from the gap onto the electric wire roller 2, where it is supported and stretched. When the stretched wire 11 is pulled out in this manner, the electric wire 4' is supported and stretched on the electric wire roller 2.

This electric wire 4' is temporarily raised in the same manner as described above, and then the wire 1
Connect another wire 4'' to the 1' terminal and extend it in the same way, raise it temporarily, and then take the extended wire in the same way, so that the wire is extended one after another, and the desired number of wires is extended with one lifting wheel deployment. This means that the electric wires have been extended.

Needless to say, there is no need to reverse the hanging wheel during this time. Once the required wire has been extended, the spacing wire is removed, the entire metal wheel is collected, and the main element is removed to complete the wire extension. In this way, it is possible to extend the wire without reversing the hanging wheel, which simplifies the work much more than with conventional methods, and allows multi-conductor power transmission lines to be extended with a single deployment of the hanging wheel. Moreover, by running the wire on the Hatakegane car, it was possible to run the wire with almost no tension on the overhead wire, which brought great convenience.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the gold wheel according to the present invention, and FIG.
The figure is a side view, Figure 3 is an explanatory diagram showing the state in which additional force is generated in the split-type lo-fu, and Figures 4 and 5 are
The figure is an explanatory view showing the behavior of the split type roller, and FIG. 6 is an explanatory view showing how wire is extended using the metal wheel according to the present invention. 1: Frame, 2: Electric wire roller, 4: Electric wire, 7: Spring, 9, 10, 18, 21: 2-split type low-fu, 30,
30': Main element roller. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A roller for the main rope wire is provided above each of the facing frames formed in a somewhat V-shape or a U-shape, and a roller for the electric wire is provided on the inside of the lower part, and spring-loaded springs are installed at appropriate positions on the sides of each frame. There is provided a two-part roller for drawing wire which is combined with two parts.
The spring bias of the split roller can withstand the weight of the drawn wire with a relatively small diameter, but cannot withstand the weight of the wire with a relatively large diameter. The divided structure is separated and separated, a spring biasing force is selected to allow the electric wire to fall from the separation gap, and the fallen electric wire is configured to fall onto the electric wire roller. Hanging wheel for multi-conductor wire extension.