JPH06225420A - Suspending metal wheel for stringing - Google Patents

Abstract

PURPOSE:To facilitate the vertical inversion of a suspending metal wheel without trouble and to improve working efficiency in the suspending metal wheel used in the suspending metal wheel working method in the stringing works for transmission lines and the like. CONSTITUTION:Conventional double-wheel suspending metal wheels 50 and 51 are connected with a connecting metal fitting 70 having an engaging part 80 for engaging a fixing rope. Thus, a suspending metal wheel 40 is formed. A plurality of the suspending metal wheels, which are engaged with the fixing ropes 25 at every specified interval, are sequentially suspended from an existing wire 23 to be replaced. When the wheels are suspended for the entire stringing section, the fixing rope 25 is tightened, and a new wire 27 is made to pass on the second wheel 42. The new wire 27 is tightened, and the existing wire 23 is loosened. Then, the up and down relation of the suspending metal wheel 40 is inverted with the fixing rope 25 as the center. Then, the new wire 27 is fixed, and the existing wire 23 is loosened and pulled out. Thus the stringing is replaced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead wire suspension wagon for replacing an overhead wire such as a power line.

[0002]

2. Description of the Related Art FIG. 6 shows an example of a conventional hanging wheel, in which 1 is a vehicle A and 2 is a vehicle B which are rotatably attached to a frame 3. Reference numeral 4 denotes an opening, one end of which is attached to the frame 3 by a hinge 5 and the other end of which is locked by locking means 6. When the locking means 6 is unlocked, the opening 4 can be opened and closed around the hinge, and the electric wire can be taken in and out. The locking means 6 will be described in detail. Reference numeral 7 is a U-shaped pin, which is fixed by the pin fixing portion 8 and is inserted in the groove of the grooved bolt 9 extending from the frame body 3. Also, the grooved knob 1
It is also in the 0 groove. When the grooved knob 10 is rotated 90 degrees, the pin 7 is opened to the outside of the groove of the grooved bolt 9, so that the opening 4 can be opened to take in and out the electric wire. Reference numeral 11 is a protective plate that protects the electric wire using a nylon material or the like.

An overhead line construction method for re-installing overhead lines using this hanging wagon will be described with reference to FIGS. 7 and 8. Note that this overhead wire construction method is described on page 222 of the “Transmission Line Construction Standards Manual,” published by the Electric Shoin, a transmission line construction study group. In the figure,
21 and 22 are steel towers, 23 is an existing line that can be replaced, and 24
Pulls the tow rope 25 and the messenger rope 26 with a carrier (self-propelled vehicle). This towing rope is fixed between the steel towers 21 and 22 after towing and becomes a fixed rope. Three
Numerals 0a and 30b are hanging wheels, which are towed by a towing rope 25 and moved.

FIG. 8 shows the construction of this hanging wagon. Reference numeral 31 is an upper hanging wheel and 32 is a lower hanging wheel.
Suspension wagons are used. Reference numeral 33 denotes a connecting rope which connects the suspension wheel cars 31 and 32 and is bound to the towing rope 25 at a binding portion 34.

The carrier 24 is run from the steel tower 21 to the steel tower 22 and the suspension wagons 30a, 30b, ...
I will put it on 3. When the carrier 24 reaches the tower 22, the carrier 24 is removed and the tow rope 25 is attached to the tower 2.
1 and 22 fixed, the suspension wheel 30a between the towers 21 and 22,
30b, ... Are arranged at a predetermined interval.

A new line is attached to the messenger rope 26 and pulled, and the new line is placed on the lower hanging wheel 32 and stretched. When the tension of this new line is increased between the steel towers 21 and 22, and the existing line is loosened, the new line pushes up the lower hanging wheel 32, and the upper hanging wheel 31 falls down together with the existing wire 23. An upper hanging wire car 3 centered around a rope
1 and the downward hanging wheel 32 are turned upside down. Here, the existing wire is pulled out and removed. While pulling the tow rope 25, the hanging wheels 30a, 30b, ... Are sequentially removed, and finally, the new wire is adjusted to a regular tension to finish the overhead wire work.

[0007]

In the above-described overhead wire construction method using a hanging wheel, the two hanging wheels 31, 32 connected to the connecting rope 33 are turned upside down. When the reversing operation was performed, the connecting rope 33 was slackened and entangled at the time of reversing, or it was caught in the hanging wheel, which was a problem. Moreover, when the hanging wire car is turned upside down, the existing line may intersect with the new line by turning counterclockwise or rotating clockwise depending on the position of the hanging wire car. This is a connection rope 3 in which the upper hanging wire 31 and the lower hanging wire 32 are flexible.
Since they are connected by 3, they will move independently, resulting in an intersection.

Further, since the towing rope 25 and the connecting rope 33 must be bound together by the binding portion 34,
There is a problem that it takes time and labor, and the work cannot be performed easily. The towing rope 25 is an upper hanging wagon 31
Alternatively, it may be bound to either of the lower hanging wheel 32,
In this case as well, it took time and effort to connect.

The present invention has been made in order to solve the above problems, and the connection rope is not entangled or caught, and the tow rope (fixed rope) and the suspension wagon can be easily connected. It is an object of the present invention to provide a suspension wire car for overhead lines.

[0010]

The suspension wire car of the present invention is provided with a locking portion for locking a fixed rope at the center thereof and an existing upper wire above the locking portion. It is provided with a first car, a second car below the locking part for placing a new downward line, and a frame to which the first and second cars and the locking part are attached. .

The suspension wire car for overhead lines according to the present invention has two two-wheel suspension wire cars and a locking portion for locking a fixed rope, and the two two-wheel suspension wire cars are symmetrical to each other. And a connecting member connected in this manner.

[0012]

In the overhead wire suspender according to the present invention, the first wheel, the second wheel and the locking portion are integrally supported and fixed by the frame body.
The upper and lower parts can be easily reversed up and down around the locking part of the fixed rope. Further, the fixed cable can be easily locked to the locking portion.

[0013]

EXAMPLES Example 1. FIG. 1 shows an embodiment of a suspension wire car for overhead lines according to the present invention. In the figure, 41 is a first car, 42 is a second car, 43 is a third car, 44 is a second car, and a frame 45,
It is rotatably attached to 46. Reference numeral 70 denotes a connecting fitting that connects the frames 45 and 46 and is provided with a locking portion 80 that locks the fixed rope 25. Reference numeral 50 denotes a two-wheel suspension wagon, which includes a first wheel 41, a third wheel 43, and a frame 45. Reference numeral 51 is a two-wheel hanging wheel, a second wheel 42, a fourth wheel 44,
It is composed of a frame 46. Reference numeral 40 denotes the entire hanging wire car. The 50 and 51 two-wheel suspension wagons have the same configurations as in FIG. 6, respectively.

2 and 3 are a perspective view and a front view of the connecting fitting 70 and the locking portion 80, respectively. Reference numeral 71 is a main body of a connecting fitting, and 72 is a connecting bolt, which connects the frame bodies 45 and 46 together with the nut 73. Reference numeral 81 denotes a fixed rope pressing plate, which tightens the fixed rope 25 between itself and the main body 71 via the rise bolts 83 by the pressing plate tightening screw 82. Reference numeral 84 is a holding plate steadying bolt, 85 is a standing bolt coming out, 86 is a holding plate coming out bolt, 87 is a spring, and 81
The locking portion 80 is composed of 87.

The connecting fitting 70 is a conventional two-wheel suspension wagon 5.
This is convenient because the hanging wheel 40 of the present invention can be configured only by connecting 0, 51 (which is called a two-wheel one-type hanging wheel on the market).

Although the overhead line construction method using the hanging wagon of the present invention is almost the same as the conventional one, the main part of the construction method will be described below with reference to FIGS. 4 and 5. In the figure, 21 and 22 are steel towers,
Reference numeral 23 is an existing line, which is an existing overhead line that can be replaced, and 25 is a fixed rope (when the tow was a towing rope. Reference numeral 27 is an overhead line which is a new line and is to be replaced.

In the overhead wire construction method, the carrier 24 is used to tow the fixed rope 25 and the messenger rope 26, and the suspension wagon 40 is sequentially attached by the same means as in the prior art. The first car 41 of the hanging wire car 40 is sequentially placed on the existing wire 23, and the hanging wire car 40 is hung and arranged at predetermined intervals between the towers 21 and 22 (overhead line section). Next, the fixed rope 25 to which the hanging wheel 40 is fixed is tensioned and fixed between the steel towers 21 and 22. When the new wire 27 is tensioned between the steel towers 21 and 22 and the existing wire 23 is loosened, the new wire 27 hits the lower part of the fourth wheel 44 and tries to lift the hanging wheel 40, and the existing wire 23 is the third wire. Since the hanging wheel 40 hangs down on the wheel 43 of the vehicle and the upper part of the hanging wheel 40 tries to lower, the hanging wheel 40 is turned upside down around the fixed rope 25 as shown in FIGS. 5A to 5B.

Further tightening the new line 27, the steel tower 21, 22
Then, the existing wire 23 is further loosened to reduce the tension, and then pulled out and removed. After that, the fixed rope 23 is loosened, the hanging wire 40 is sequentially removed from the new wire 27, and finally the new wire is adjusted to a regular tension to complete the overhead wire work. As described above, since the hanging wagon of the present invention does not have the connecting rope, the connecting rope is not entangled or caught, and the overhead wire does not intersect when the hanging wagon is turned upside down. Further, the fixed rope can be easily connected to the hanging wheel, so that workability is also good.

Example 2. In the first embodiment, the two-wheel suspension wagon 50,
Although 51 was connected with the connecting metal fitting 70, the frame 4
It is also possible to form the frame members 5 and 46 as one frame and provide the locking portion 80 of the fixed rope at the center of the frame member.

Example 3. The third wheel 43 serves as a receiver when the existing wire 23 is loosened, and the fourth wheel 44 is lifted when the new wire 27 is strained. For example, a concave guide may be used, or the frame itself may be used. Further, since the two-wheel suspension wagons 50 and 51 are vertically symmetrical when viewed from the locking portion 80, the first wheel 41 is referred to as the second wheel and the second wheel 4 is moved.
2 may be used upside down as the first car. Also,
The upper and lower sides may not be completely symmetrical, but may be asymmetrical to the extent that the function is satisfied.

[0021]

As described above, in the hanging wheel of the present invention, the locking portion for locking the fixed rope, the upper first wheel and the lower second wheel can be attached to the frame body. There is an effect that it can be reversed upside down around the section without any trouble and that the fixed rope can be easily attached to the suspension wagon to improve work efficiency.

[Brief description of drawings]

FIG. 1 is a perspective view of a hanging wagon of the present invention.

FIG. 2 is a perspective view of the connection fitting of the present invention.

FIG. 3 is a front view of the connection fitting of the present invention.

FIG. 4 is a perspective view of an overhead wire construction method of the present invention.

FIG. 5 is a perspective view showing an upside-down reversal of the hanging wheel of the present invention.

FIG. 6 is a perspective view of a conventional hanging wagon.

FIG. 7 is a front view of a conventional overhead wire construction method.

FIG. 8 is a front view showing the main part of FIG.

[Explanation of symbols]

 21,22 Steel Tower 23 Existing Line 25 Fixed Rope (Towing Rope) 26 Messenger Rope 27 New Line 40 Suspended Wagon 41 First Car 42 Second Car 43 Third Car 44 Fourth Car 45,46 Frame 50 , 51 Two-wheel suspension wagon 70 Connection fitting 80 Locking part

Claims (2)

[Claims] 1. A locking portion to be locked to a fixed rope, a first wheel rotatably arranged above the locking portion and rolling on an existing line, and freely rotatable below the locking portion. And a second car on which a new line is placed, and a suspension wire car for overhead lines provided with a frame body that integrally configures the first and second cars and the locking portion. 2. A coupling member having a locking portion that is locked to a fixed rope, and two two-wheel suspension wagons attached to both sides of the coupling member, the outside of one of the two-wheel suspension wagons. Is used as a first car that can be placed on an existing line, and a car outside the other two-wheel sling car is used as a second car that can be placed on a new line. car.