JPH03212104A - Steel tower wiring method and carrier - Google Patents

Abstract

PURPOSE:To shorten the term of works by self-propelling a carrier on a bus after stretching the bus and by stretching respective cables through making the carrier to pull the respective cables. CONSTITUTION:A bus 14 is fitted with a carrier (c), and after the first cable k1, second cable k2 and third cable k3 of a transmission line and several towing ropes 29 are directly tied to the hook 18 of the carrier (c), the carrier (c) is driven to travel. While the carrier (c) travels further, a plurality of guides 30 are made to hang down from the bus 14. The cables k1, k2, k3 are respectively inserted into the rings of each guide 30 and the towing ropes 29 are tied to a connecting rope. Also, respective cables k1, k2, k3 are engaged with respective metal wheels 7, 10, 11 of a steel tower 1. Thus, after the cables are stretched over a plurality of spans, respective cables k1, k2, k3 are permanently attached to the steel tower 1 and the bus 14 is pulled out by a winch while a tied ground wire (g) is simultaneously stuck to the end of the bus 14.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of constructing a power transmission line between steel towers, and a carrier used when carrying out the method.

[Conventional technology]

The outline of the conventional overhead line method is shown in Figures 8 to 11.
As shown in the drawings, basically, following the preparation process, a ground line installation process, a No. 1 electric wire installation process, a No. 2 electric wire installation process, and a No. 3 electric wire installation process of the power transmission line are sequentially performed. Moreover, one side of the steel tower 1 is constructed as a drum field d, that is, the line supply side, and the other side is constructed as the engine field e, that is, the line traction side. Moreover, the construction is not carried out in one span between the two adjacent steel towers, but in three to four spans. The drawing shows only one span.

The preparation process is as shown in Figure 8 (the metal wheels 2, 2 installed at the top of both steel towers 1, 1 are hung with No. 10-pu 3.3 (referring to linen ones) and lowered to the ground. An intermediate rope 4 stretched on the ground is connected between both ropes 3, 3, and the engine station e
While pulling the rope 3 on the side, the 10th rope on the drum field d side
- The first wire 5 (made of steel) is tied to the rope 3 (thereby, the first wire 5 is constructed between the two steel towers 1, 1. However, it is not possible to extend the intermediate rope on the ground. In some cases, this is not possible, and in recent years the bridge has been constructed using helicopters and workers on the tower.

Therefore, first, the ground wire installation process is as shown in Figure 9A (,
By connecting the ground wire g and the 20th wire 6 to one end of the first wire 5 and pulling the first wire 5, the 9th wire
As shown in Figure B, a ground line g is constructed between the top metal wheels 2.degree.2, and a 20th metal wheel 6 is installed between the first stage metal wheels 7.7, thereby completing the ground line installation process.

Next, the process of installing the No. 1 electric wire of the power transmission line is as shown in Fig. 10A, by tying the second wire 8 to the erecting No. 20 wire 6 and pulling it between the metal wheels 7 and 7 of the first stage. By constructing the second wire 8 at the top and connecting and pulling the second wire 8 to the first wire 1 and 30-9 as shown in FIG. 10B, the first stage is constructed as shown in FIG. 1 on the 1st wire between the gold wheel 7 and 7
At the same time, the 30th metal wheel will be constructed between the second tier gold wheels 10 and 10.
- Erection of pipe 9.

By repeating the operations of changing from rope to wire and from wire to electric wire as described above, the second electric wire is attached to the metal wheel 10 of the second stage and the metal wheel 11 of the third stage, respectively, as shown in Fig. 11. 2. 3 is installed on the 3rd wire.

[Problem to be solved by the invention]

As mentioned above, the same process is repeated in stages, from rope to wire, and from wire to electric wire.
It takes a very long time to erect electric wires, and since the work is done at high places, it is affected by the weather, and there are only a few days in which the work can be carried out in safe conditions. In some cases, it may not be possible to set up an engine field, and work must be carried out over only 1.2 spans, even though the overhead line is generally capable of spanning 3 to 4 spans. There were cases where the construction period was delayed.

The present invention was developed to solve the above problems.

[Means to solve the problem]

The solution according to the present invention is to construct a busbar between the tops of each steel tower, and then tie a predetermined number of power transmission lines and each terminal of the towing rope to a carrier that is attached to the busbar and runs by itself along the busbar. Then, while the self-propelled carrier is traveling, a plurality of guides each having a plurality of rings connected vertically are suspended from the bus bar at appropriate intervals, and each time a guide is suspended, a power transmission line is inserted into each ring. In addition, the towing rope is tied to a suspension rope that connects each ring of the guide, and the towing rope is constructed over a required span.

In addition, the carrier used in the above method has rotary shafts arranged horizontally at the upper part of the frame with the lower surface open, and vertically on both the left and right sides so as to be movable parallel to each other toward the center, and springs are attached to each rotary shaft. Wheels are provided that press into contact with the constructed busbar by the auxiliary force of It is connected via a generator.

[For production]

Therefore, after the busbar is strung, the carrier is self-propelled on the busbar, and each electric wire is pulled by the carrier for installation. Therefore, it is possible to install the required number of electric wires at once, and the construction period is greatly reduced. This will ensure that the objective can be shortened to 20%.

〔Example〕

To specifically explain the carrier C according to the present invention, it is shown in Figs. A cover 13 is placed over the frame 12 , and the bus bar 14 is inserted from below the frame 12 and passed along the axis of the frame 12 . Inside the frame 12 are a plurality of upper wheels 15 that touch the top surface of the bus bar 14 , and a bus bar 14 . A plurality of horizontal wheels 16 and 17 are provided in contact with the left and right surfaces of the frame 12 so as to be rotatably driven and capable of pressing against and floating on the generatrix 14.Furthermore, a plurality of hooks 18 are provided on the frame 12 and projecting downward from the cover 13. It is.

Since each of the wheels 15, 16, and 17 has the same structure, the mounting of the wheels 15, 16, and 17 will be explained from the upper wheel side. 20 is constructed so as to be able to freely slide vertically, and the wheel 15 is fixed to the rotating shaft 20, and the rotating shaft 2
A pair of left and right cases 21.
The spring 22 (see FIG. 4) provided in the spring 21 is placed in pressure contact with the generatrix 14. On the other hand, an electric motor 23 with a brake is provided between the frame 12 and the cover 13, and a rotating shaft 20 is connected to the rotating shaft 20 via a power transmission mechanism 24 using a timing belt.
Since the rotating shaft 20 moves up and down, the timing belt is hung obliquely to one rotating shaft 20, and the timing belts are placed before and after the rotating shaft 20. The signal is also transmitted to the shaft 20 via a timing belt 25.

Furthermore, an arm 26 hanging downward from the frame 12 is provided,
An engine 27 powered by gasoline or the like is provided on the arm 26 so that each wheel 15, 16. It has become. Further, the drive and speed commands of each wheel 15, 16, 17 can be controlled remotely.

The process of connecting the overhead wire between the steel towers 1 and 1 using the carrier C will be explained with reference to FIGS. 5 to 7.

First, a preparatory step is carried out, which is the same as in the conventional case, in which the rope 3 is stretched between the top wheels 2, preferably by a helicopter. Next, connect the bus bar 14 made of wire to the end of the rope 3, and connect the bus bar 14 instead of the rope 3.
Attach.

Therefore, while attaching the carrier C to the bus bar 14, as shown in FIG. After the rope 29 is tied, the carrier C is driven and travels. While traveling further, a plurality of guides 30 are suspended from the bus bar 14. The guide 30 is also used in the conventional overhead line method, but it is made up of a plurality of removable rings connected to the overhead line with a connecting rope.
The electric wires kl and 2°k3 are inserted through each ring of 0, respectively, and the towing rope 29 is tied to the connecting rope. In addition, each electric wire k1, k2, k3 is connected to each gold wheel 7, 10, 1 of the steel tower 1.
Can be multiplied by 1. After constructing the wire over multiple spans in this way, 1, 2, and 3 wires are attached to each wire. 3 to the steel tower 1 is the same as the conventional process, and at the same time the bus bar 14 is pulled out with a winch, the ground wire g tied to the end of the bus bar 14 is
It is something to attach.

〔Effect of the invention〕

The method of installing overhead lines to a steel tower according to the present invention involves installing a self-propelled carrier on a temporary busbar, attaching the end of the power transmission line directly to the carrier, and installing the line all at once. This eliminates the need for an engine station, which was required in the past, and allows construction work to be carried out regardless of poor location conditions or restrictions due to traffic, etc.

Further, according to the carrier according to the present invention, the bottom surface of the frame is open, so that it can be easily inserted into the bus bar, and each wheel that connects to the bus bar is provided on the top and left and right, and in addition to being rotatably driven, a spring is attached to the bus bar. Since it can be pressed and separated from the busbar, it is easy to attach and remove it from the busbar, and it can be transferred reliably, and even if there is a connecting part in the middle of the busbar, it can be reliably overcome. It is possible.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a carrier according to the present invention, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, FIG. 3 is a perspective view showing a sliding bearing, and FIG. FIGS. 5 to 7 are front views showing the process order of the overhead wire method according to the present invention, and FIGS. 8 to 11 are front views showing the steps of the conventional overhead wire method. be. 1... Steel tower 2, 7, 10, 11... Gold wheel 3, 6
゜9.29...Rope 12...Frame 14.
... Bus bar 15, 16.17... Wheel 18... Hook 19... Sliding bearing 20... Rotating shaft 22
... Spring 23 ... Electric motor 24 ... Power transmission mechanism 27 ... Engine 28 ... Generator C.
...Carrier g...Ground wire k1, k2, k3
...Power transmission line Figure 8! First cause

Claims (1)

[Claims] 1. After constructing a busbar (14) between the tops of each steel tower (1), a predetermined number of carriers (c) are attached to the busbar (14) and self-propelled along the line. transmission lines (k1, k2,
k3) and each end of the towing rope (29), and while traveling on the self-propelled carrier (c), a plurality of guides (30) with a plurality of rings connected vertically on the bus bar (14) are connected. The power transmission lines (k1, k2, k3) are inserted into each ring each time the guide (30) is hung at appropriate intervals, and the towing rope is inserted into the hanging rope connecting each ring of the guide. (29) is tied together and installed over a required span 2, a method for connecting overhead lines to a steel tower, horizontally at the top of the frame (12) with the bottom open, and vertically on both the left and right sides. Wheels (15, 16, 17) each having a rotating shaft (20) movable in parallel toward the center thereof are pressed against a generatrix (14) built on each rotating shaft (20) by the force of a spring (22). ), which connects the electric motor (23) provided within the frame (12) and each rotating shaft (20) via a power transmission mechanism (24), and an engine ( 27) and a motor (23) are connected via a generator (28).