JP3588640B2 - Power transmission tower with security equipment and method of installing security equipment on power transmission tower - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a power transmission tower and a power transmission tower having security facilities that enable workers to safely move up and down and perform work safely on the power tower when performing hot-line work or the like in a power tower such as a compact transmission line. On how to install security equipment in the country.
[0002]
[Prior art]
Conventionally, as a general power transmission tower, as shown in FIG. 10, a power transmission tower 1 with an ascending ladder 2 attached thereto, or as shown in FIG. A step bolt 4 is fixed to the tower, and a step bolt 4 is provided up to the vicinity of the tower vent, and a safety ladder 2 is provided at a height higher than that. It is known that a worker climbs up or works on the power transmission tower 1 using the climbing ladder 2 or the step bolt 4 or the like.
As shown in FIGS. 12 and 13, a tablet or an ascending tower is installed at the lower part of the power transmission tower 1 to prevent a worker from erroneously determining whether an electric wire is a live line or a target line when performing a live line operation. A protection device 5 is provided, and a separating rod or a net 7 for defining a working area is provided near the base end of the tower arm 6.
[0003]
[Problems to be solved by the invention]
In recent years, there has been a strong demand for a compact transmission line that minimizes the size of the overhead transmission line as much as possible. In order to achieve this, suspension towers and tension-resistant towers using insulating arms have been studied. It is a narrow tower. Numerous narrow-line towers with narrow line-to-line intervals are also used in towers that do not use insulating arms. FIGS. 14 and 15 show a two-line suspended tower using an insulating arm. An insulating arm 14 composed of a horizontal member 12 and an oblique member 13 is provided at a predetermined location of a suspended tower 11. An electric wire 16 is gripped by a suspension clamp 15 at the tip of the insulating arm 14. FIG. 15 is a plan view of FIG. 14, where the width a of the steel tower 11 is 1 m or less. If the same elevating means as in the prior art is employed in such a narrow line tower 11, a step bolt 18 is provided on the tower 11 or a rising ladder 19 is provided on both sides of the tower 11.
[0004]
However, in the above-mentioned tower between narrow lines, when the step bolt 18 is provided, the worker approaches the charging part, which is a safety problem. In addition, the ascending ladder 19 is provided on both sides in the span direction (longitudinal direction of the electric wire) of the steel tower. There is a safety problem as well.
It is also conceivable to secure a work area by installing isolation bars or nets. However, there is a risk that workers may get close to live parts and receive an electric shock during installation work, which is also a safety problem. There is.
[0005]
The present invention has been made in order to solve the above-mentioned problems, and is mainly intended for a power transmission tower having a security facility capable of safely performing hot-line work or the like in a narrow-lined tower. An object of the present invention is to provide a method for installing security equipment on a power transmission tower.
[0006]
[Means for Solving the Problems]
A power transmission tower having the safety equipment according to claim 1, wherein the power transmission tower has wires on both left and right sides thereof, and the power transmission tower is provided on the left and right sides of the power transmission tower, and the left and right traveling rails. A ladder provided between the pedestal, a traveling body mounted on a lower end of the traveling rail and capable of traveling on the traveling rail, and a protective fence provided on the traveling body. And
[0007]
In the power transmission tower having the security equipment according to claim 2, the traveling rail is provided on each of the opposing tower surfaces, and both traveling rails are in a state where the traveling body can travel at the top of the power transmission tower. It is characterized by being smoothly connected.
[0008]
In the method for installing security equipment on a power transmission tower according to claim 3, a traveling rail is provided vertically on each of left and right sides of the power transmission tower, and a lower end of one of the traveling rails is used. The traveling body is sequentially moved upward while being connected by a connecting member at predetermined intervals, thereby forming a wall surface by the protective fence along the traveling rail.
[0009]
[Action]
In the above configuration, when performing maintenance work or the like on one of the lines while maintaining the other line in a live state, a plurality of traveling bodies may be sequentially mounted from a lower end on a traveling rail on a live line side of the tower surface and run. A plurality of protective fences integrated with the traveling body are connected and connected between the elevating ladder provided on the tower surface and the live line, and the connected protective fences partition the live line side of the electric wire and the work area. Is formed. Therefore, it is not necessary for workers to move up and down the work area defined by the protective fence or to work in the work area. it can.
[0010]
【Example】
Hereinafter, the present invention will be described with reference to the drawings. FIGS. 1 to 6 show an embodiment of the present invention, and reference numeral 31 denotes security equipment for a power transmission tower (hereinafter, simply referred to as “security equipment”). The security equipment 31 is provided with running rails 33 provided vertically on both left and right sides of a tower body provided with an ascending ladder 38 of a power transmission tower 32, and is mounted from the lower end of the running rail 33 to run the running rail 33. It is mainly composed of a traveling body 34 capable of traveling on the rail 33 and a protective fence 35 provided on the traveling body 34.
[0011]
The power transmission tower 32 of this embodiment is a tower for a compact power transmission line using an insulating arm 36 as an arm, and electric wires 37 are suspended from the ends of the three-staged insulating arms 36, respectively. The ascending ladder 38 is provided at the center in the width direction on both sides of the power transmission tower 32 in the radial direction (the electric wire length direction).
As shown in FIGS. 2 and 3, the traveling rails 33 extend in parallel with the main leg members 32a on both sides in the span direction of the power transmission tower 32 (side surfaces on which the ascending ladders 38 are provided). The power transmission tower 32 is installed from near the ground to near the top of the power transmission tower 32. Since the traveling rail 33 is permanently installed on the power transmission tower 32, it is preferably made of an aluminum alloy or the like having excellent corrosion resistance, and is divided into predetermined lengths over the entire power transmission tower 32. Installed. Further, stoppers 33a are attached to the upper and lower ends of the traveling rail 33, and the stopper 33a at the lower end is detachable. As shown in FIG. 6, the running rail 33 is formed in an I-shape in a flat cross section, and has a bottom surface 33a fixed to the main leg 32a, a running recess 33b on which running wheels to be described later run, and a guide wheel running. And an upper surface 33c.
[0012]
The traveling body 34 is formed in a concave shape in a flat cross section, and faces a traveling portion 40 which is mounted to cover three outer peripheral surfaces (both side surfaces 33b and an upper surface 33c) of the traveling rail 33, and faces the inside of the traveling portion 40. And a guide wheel 40b provided inside the center of the running portion 40 and running while being supported by the upper surface 33c of the running rail 33. The running portion 40, the running wheels 40a, and the guide wheels 40b are fitted and mounted from the lower end of the running rail 33. The traveling body 34 is engaged with the traveling rail 33 by two traveling wheels 40a and one guide wheel 40b, and the traveling wheels 40a and the guide wheels 40b are disposed above and below the traveling section 40 as shown in FIG. The provision of the two positions enables the traveling section 40 to travel in a stable state without detaching from the traveling rail 33.
[0013]
A rectangular protective fence 35 is integrally provided on the rear surface of the traveling body 34. The protective fence 35 is convenient for handling such as transportation and storage, and has such an external dimension that an operator cannot easily move over. It has been. It is preferable that the traveling body 34 and the protective fence 35 be integrally formed of a material such as an aluminum alloy or a hard plastic in order to reduce the weight. Alternatively, the traveling body 34 may be made of an aluminum alloy, and a protective fence 35 made of hard plastic may be attached to the traveling body. In addition, connecting portions 41 are formed at the upper and lower ends of the traveling body 34, and a connecting rod (connecting member) 42 that connects the traveling bodies 34 to each other is attached to the connecting portions 41. The connecting rod 42 has such a length that a gap is formed between the protective fences 35 connected to each other so that a worker cannot pass through.
[0014]
Next, a method of installing the security equipment configured as described above on a power transmission tower will be described. The running rails 33 are permanently installed on both sides of the steel tower 32 in the span direction.
In the power transmission tower 32, for example, in FIG. 4, when the maintenance work is performed on the left electric wire 37 while the right electric wire 37 is in a live state, the protective fence 35 is attached from the lower end side of the left running rail 33 on the live side. The traveling body 34 is mounted and pushed up along the traveling rail 33. Next, the next running body 34 is connected to the pushed running body 34 by the connecting rod 42, and is similarly mounted on the running rail 33 to run upward. Hereinafter, the same operation is repeated, and the traveling bodies 34 connected by the connecting rods 42 are sequentially pushed up along the traveling rails 33 so that the protective fence 35 is connected to the live line of the power transmission tower 32 as shown in FIG. The protective fence 35 forms a continuous wall along the main leg material 32a on the side at regular intervals and from the tower top to near the ground, and the working area of the power transmission tower 32 and the live line are partitioned. Is done.
Therefore, the worker can easily check the work area from the ground, and if the worker climbs the climbing ladder 38 or works in the work area, the worker can approach the electric wire 37 on the live line side. Is eliminated, and hot-line work can be performed safely. After the hot-line work is completed, the stopper 33a at the lower end of the traveling rail 33 is removed, and the operation is performed in the reverse of the above-described operation to sequentially move the traveling body 34 from the lower end of the traveling rail 33. Collect and release work area.
[0015]
FIG. 7 shows that an auxiliary running rail 45 is formed at the lower end of the running rail 33 of the above-described embodiment to form a smooth arc on which the running body 34 can run and to extend horizontally near the ground. The running body 34 is mounted and fed from the end of the rail 45, thereby ensuring work safety and improving efficiency. The auxiliary running rail 45 is disassembled after the hot-line work is completed.
[0016]
Next, a power transmission tower having security equipment according to a second embodiment of the present invention will be described with reference to FIGS. In these figures, components that are considered to be the same as or equivalent to the above-described embodiment are given the same reference numerals, and descriptions thereof are omitted. The security equipment 50 according to the second embodiment is configured such that an upper part of traveling rails 33 provided on both sides of the power transmission tower 32 in the radial direction (horizontal direction in FIG. 8) is provided at the top of the power transmission tower 32 at the top. Numeral 51 denotes a state in which the vehicle can be run via a smooth circular arc portion 33a. For this reason, the length of the traveling body 51 and the protective fence 53 on which the traveling rail 33 travels is set to a length that can pass through the arc portion 33a of the traveling rail 33. Other configurations are the same as those in the embodiment of FIGS. 1 to 6 described above.
[0017]
In the above-mentioned security equipment 50, if the traveling body 51 is mounted from one lower end of the traveling rail 33 and pushed up while assembling sequentially as in the embodiment of FIGS. The traveling body 51 is sent to the opposite side surface beyond the tower top, and the wall surface of the continuous protective fence 53 can be integrally formed on both side surfaces of the power transmission tower, thereby increasing the efficiency of installation work. be able to. In this case, if a storage fork (not shown) is mounted on the traveling rail and a towing vehicle driven by a power supply is mounted to allow the traveling body 51 to travel, the installation work can be made much more efficient. The movement of the towing vehicle may be controlled by a wireless or wired remote controller.
[0018]
In the illustrated embodiment, the running bodies are mounted while being connected one by one with connecting rods. However, the present invention is not limited to this, and a series of running bodies are stored in a drum or box or the like. By deploying while directly mounting on the traveling rails during use, work efficiency may be improved, and storage space and work space may be saved.
Further, the traveling body is not limited to the structure of the illustrated embodiment, but may be any as long as it can be attached to and detached from the traveling rail and can run the traveling rail stably. Also, the shape of the protective fence provided on the traveling body may be any shape that does not obstruct the hot-line work, cannot be easily crossed by the worker, and has a light structure.
Further, in the illustrated embodiment, the running rail is provided along the main leg material on the tower body surface without the tower arm, but is not limited to this, and is attached to the main leg material on the side surface provided with the tower arm. You may do so. In this case, the protective fence may be protruded by a predetermined length in the span direction of the tower, that is, on the side of the tower where the ascending ladder is provided.
Further, the traveling rail may be attached to a place other than the main leg material of the tower.
[0019]
The traveling rail and the conventionally used fall prevention guide rail may be shared. In this case, the traveling rail on the side opposite to the traveling rail on which the protective fence is installed is used as a fall prevention guide rail, and the tower is elevated, so that safety can be easily confirmed.
In the illustrated embodiment, a power transmission tower having an insulating arm has been described. However, the present invention is not limited to this, and can be applied to a normal power transmission tower having a steel arm.
[0020]
【The invention's effect】
According to the present invention, running rails are provided on both sides of a tower body surface of a power transmission tower provided with an ascending ladder, and a plurality of running bodies having protective fences are sequentially fed from a lower end of the running rail to thereby reduce electric wires. Since the wall formed by the protective fence, which separates the live line side from the work area, can be formed, workers can easily check the work area from the ground, and can safely move up and down the power transmission tower. In addition, hot-line work can be performed safely in the work area.
[Brief description of the drawings]
FIG. 1 is a side view of a power transmission tower having security equipment according to one embodiment of the present invention.
FIG. 2 is a front view of FIG.
FIG. 3 is a sectional view taken along line AA in FIG. 2;
FIG. 4 is a view showing a state in which the traveling body is sent to the traveling rail in FIG.
FIG. 5 is an enlarged side view of the traveling body and the protective fence of the embodiment.
FIG. 6 is a plan view of FIG. 5;
FIG. 7 is a side view of a power transmission tower having security equipment provided with an auxiliary traveling rail in the embodiment.
FIG. 8 is a side view of a power transmission tower having the security equipment of the second embodiment.
FIG. 9 is a front view of FIG. 8;
FIG. 10 is a front view of a conventional power transmission tower.
FIG. 11 is a perspective view of a power transmission tower provided with a conventional step bolt.
FIG. 12 is an explanatory diagram illustrating the installation state of isolation bars and nets provided in a conventional power transmission tower.
FIG. 13 is a plan sectional view of FIG.
FIG. 14 is a front view of a suspension tower for explaining a conventional technique.
FIG. 15 is a plan view showing a state in which a step bolt is provided on a main leg member of a suspension tower for explaining a conventional technique.
[Explanation of symbols]
31, 50 Transmission tower maintenance equipment 32 Transmission tower 33 Traveling rails 34, 51 Traveling bodies 35, 53 Protective fence 36 Tower arm 37 Electric wire 42 Connecting member

Claims (3)

A traveling rail provided vertically in each of left and right sides of a power transmission tower in which electric wires are wired on left and right arms, an ascending tower ladder provided between the left and right traveling rails, A power transmission tower having security equipment, comprising: a traveling body mounted on a lower end of the rail and capable of traveling on the traveling rail; and a protective fence provided on the traveling body. 2. The vehicle according to claim 1, wherein the traveling rails are respectively provided on opposing tower surfaces, and both traveling rails are smoothly connected at the top of the power transmission tower so that the traveling body can travel. A power transmission tower having the above-mentioned security equipment. This is an installation method for installing security equipment on a power transmission tower, in which running rails are provided in the vertical direction on each of the left and right sides of the power transmission tower, and a traveling body is provided from the lower end of one of the running rails. Characterized in that a wall is formed by a protective fence along a traveling rail by sequentially traveling upward while being connected by a connecting member at predetermined intervals, thereby installing a security facility on a power transmission tower.

Images