JPS598123B2 - Hanging wheel for power transmission lines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a hanging wheel used when overhead power transmission lines are connected or re-strung.

Conventionally, when installing power transmission lines between towers, obstacles such as buildings, roads, and railway overhead lines often intersect between the towers, so protective scaffolding such as wire mesh has been constructed before work begins. This was quite uneconomical and required a huge number of work steps.

In addition to this, with the recent expansion in electricity demand, it is now necessary to keep power lines live and install new wires or rewire them in close proximity to the live lines.
In such cases, the conventional work of hovering over electric wires has become almost impossible.

Conventionally, the so-called (1) metal construction method has been known as an overhead wire construction method to deal with such a situation.

The one shown in Figures 1 to 3 is one in which the wire is extended between the steel towers A and B using ink wheels 20, 20, . . . .

That is, the ink wheels 20, 20, . . . are connected to the pulling wire 14' on the guide wire 13' stretched between the steel towers A and B, and are pulled out 11 times while maintaining an appropriate interval.

The outline of this ink wheel is as shown in Figure 4, and it has a connecting bar (this may be a twisted wire instead of a bar).
There are sheaves above and below 20d, and the upper sheave 20a is first installed so as to run on the guide wire 13'.

Then, a separate wire, such as a pilot wire or a power transmission line 15', is placed on the lower sheave 20b in a tension-free state and pulled out.

20c is a fixture for fixing the pull wire 14'.

FIG. 1 shows the situation in which the line is extended in this way, and 16' is a self-propelled machine.

FIG. 2 shows the situation where the power transmission line 15' has been extended between the steel towers A and B after being extended as described above.

In this state, tension is applied to the power transmission line 15', while tension on the guide wire 13' is removed.

Then, the hanging wheel 20 is turned upside down and changes to the state shown in FIG. 3.

That is, as shown in FIG. 5, the upper sheave 20a moves downward and the lower sheave 20b moves upward, and accordingly, the guide wire 13' moves downward and the power transmission line 15' moves upward.

FIG. 3 shows how the power transmission line 15' is placed under tension and the guide line 13' is placed under tension.

In this state, the guide wire 13' is removed, and then the power transmission line 1
5' as a guide wire, pull the wire 14' to the metal wheel 20.
．． 20..., the overhead wiring of the power transmission line 15' is completed here.

However, the problem here is that the ink and gold car is 20.20...
In order to change the state shown in FIG. 4 to the state shown in FIG. 5, it is necessary to reverse the black and gold wheels 20, 20, . . .

This does not go smoothly, and the wires get tangled with each other, and the metal wheels get caught, making it extremely difficult.

The present invention aims to provide a hanging wheel that does not turn over and eliminates such troubles.

That is, examples of the hanging wheel according to the present invention are shown in FIGS. 6, 7, and 17.

A first frame 1 and a second frame 2, each having a space 30 in which a filament can freely move between upper and lower sheaves, are combined and fixed in parallel.

Sheaves 3 and 4 and sheaves 5 and 6 are fixedly arranged above and below the space 30 of the first frame 1 and above and below the space 30 of the second frame, respectively, via bearings and shafts.

A door that can be opened and closed by a hinge 8 is provided on the outer surface of each of the frames 1 and 2, and the filament is taken in and taken out by opening and closing this door.

The opening/closing operation of the opening/closing door is performed by operating rods 9, 9'.

That is, as shown in FIG. 17, the operating rod 9 has a coiled spring 10 interposed on its shaft, a stopper 11 is fixed to fix the movement of one of the springs 10, and the operating rod 9 is provided so as to protrude from the frame 1. The spring 10 is provided between the stopper 11 and the lower engagement opening 12 between the pair of upper and lower engagement openings 12 and 12'.

The engaging opening 12, 12' has a through hole large enough to allow the shaft of the operating rod 9, 9' to be freely inserted therethrough.

Figure 6 shows the opening/closing door in a closed state, and when inserting or removing the wire, push down the operating rods 9,g against the spring force and release the operating rods 9,9' from the engagement openings 12, 12'. 1st
As shown in Fig. 7, when opening the door and then closing the door, the operating rods 9, 9' are pushed down and restrained, and then the springs are released at a predetermined position to move the operating rods 9, g to the engagement opening 12.1.
2'.

Reference numeral 7 is a pull wire fixing fitting, and has a structure in which the pull wires for connecting the hanging wheels at a constant interval can be placed at a predetermined position and fixed with bolts.

FIG. 8 shows how wire is extended using the hanging wheel according to the present invention.

That is, in FIG. 8, 13 is a guide wire (if the electric wire is being replaced, the existing wire is used as the guide wire,
If it is a new installation, the guide wire will be a messenger wire stretched instead of a nylon rope, etc.), 1
For example, 5 is a power transmission line, 14 is a pull wire, and 18.
18... is a hanging wheel according to the present invention.

16 is a self-propelled machine, and 17 is a connecting portion of a wire to the self-propelled machine 16.

15 may be a pilot wire to be replaced with a power transmission line.

9 to 11 show the operational relationship between the ω metal wheel and each line according to the present invention.

The operational relationship during wire extension as shown in FIG. 8 is as shown in FIG. 9.

That is, the guide wire 13 is connected to the upper sheave 3 of the first frame 1.
As the vehicle travels, the power transmission line 15 is delivered onto the lower sheave 5 of the second frame 2.

In FIG. 9, 7 is a fixture for fixing the pull wire 14.

In this way, as the hanging wheels 18, 18... are pulled out one after another and the wire extension progresses, as shown in Fig. 15, the steel tower A
, B, and the power transmission line 15 is delivered between them.

Next, tension is applied to the power transmission line 15.

Then, as shown in FIG. 10, the power transmission line 15 moves through the space 30 of the second frame 2 and moves from the lower sheave 5 to the upper sheave 6 side of the second frame 2.

Then, the tension on the guide wire 13 is removed.

Then, the guide wire 13 that was on the upper sheave 3 of the first frame 1 moves through the space 30 of the first frame 1, and moves onto the lower sheave 4 as shown in FIG.

That is, what is shown in FIG. 16 shows a state in which tension is applied to the power transmission line 15 and tension on the guide wire 13 is removed.

Thereafter, in this state, the guide wire 13 is taken over, and the hanging wheel 18,
18 .

What should be noted here is that in the hanging wheel according to the present invention, there is no reversal of the hanging wheel as in the conventional example.
be.

Therefore, with the hanging wheel according to the present invention, the entanglement of the wires and the catching of the hanging wheel, which were seen in the conventional reversing method of the ω metal wheel, are completely eliminated, and the overhead wire is extremely circular. This makes it possible to work.

12 and 13 show another embodiment according to the present invention, and the mechanism for attaching and detaching the filament to the ω metal wheel is omitted.

It will be seen that in this case as well, the guide wire 13 and the power transmission line 15 are simply moved vertically within the spaces 30 and 30 of each frame, and the hanging wheel itself is not reversed at all.

As a result, the disadvantages of the conventional reversible hanging wheel, such as intertwining of the wires and the catching of the omega wheel, can be completely eliminated.

Furthermore, what is shown in FIG. 14 is yet another embodiment, in which a second frame is sandwiched in the center, and first frames are arranged on the left and right sides of the second frame.

In this case as well, the mechanism for attaching and detaching the filament to the ω gold wheel has been omitted.

The hanging wheel made in this way is especially suitable for dog-sized electric wires etc.
Messenger wire M,
Since two M can be arranged on the left and right sides as shown in the figure, there is an advantage that not only can an increase in weight be sufficiently coped with, but also that the left and right sides are balanced and lateral vibration can be prevented during the overhead line.

In addition, it goes without saying that the number of humms may be increased or decreased as needed.

In the description of the above embodiments, power transmission lines were used as an example, but it goes without saying that the ink-metal wheel of the present invention can also be applied to the stretching of wires during bridge construction and the stretching of other wires. Nor.

According to the present invention as described above, a first frame having sheaves on the upper and lower sides and through which a filament can pass, and a second frame having the same structure as this frame are combined and fixed. Because of this, the wire overhead wire can be installed without reversing the hanging wheel at all, and the advantages of the conventional hanging rod T method can be utilized as is, and the benefits of convenience in this field are great.

[Brief explanation of the drawing]

Figures 1 to 3 are explanatory diagrams showing the conventional sling T method;
Figures 6 and 7 are explanatory diagrams showing a conventional hanging wheel.
The figure is an explanatory diagram of the hanging wheel according to the present invention, FIG.
Figures 11 to 11 are explanatory diagrams showing the moving status of the black and white lines on the ink wheel according to the present invention, Figures 12 to 14 are explanatory diagrams showing other embodiments according to the present invention, and Figures 15 and 16 are diagrams showing the movement of the black and white lines on the ink wheel according to the present invention. FIG. 2 is an explanatory diagram showing a fast metal construction method using a hanging wheel according to the invention. FIG. 17 is a perspective view showing one state of the hanging wheel according to the present invention. 1, 2: Gold wheel frame, 3, 4, 5, 6: Sheave, 13
．． 13': Guide wire, 14.14': Pulling wire, 15
．． 15': Power transmission line, 18: Metal wheel according to the present invention, 20: Conventional metal wheel, 20a, 20b: Conventional sheave, 30:
Space of the frame according to the invention.

Claims (1)

[Claims] 1. A power transmission line suspension consisting of a plurality of unit frames arranged in parallel, each of which has a space between the upper sheave and the lower sheave, and which is constructed so that the filaments can move freely between the lower sheaves. safe.