JPH0919037A - Arm guard in steel tower of transmission line, etc. - Google Patents

Abstract

PURPOSE: To provide an arm guard whose structure is simple, which is attached to an arm simply and by which the electrifying part of a support member is protected from a member carried by a bird to make a nest as far as possible. CONSTITUTION: In an arm guard 2, a support member 1B which supports a transmission line W or the like in the steel tower of the transmission line W or the like protects the circumference of an installed arm 1A. The arm guard is constituted of a long installation base 3 which is arranged in parallel with the arm 1A, of an attachment member 5 by which the installation base 3 is mounted on, and attached to, the arm 1A and of a plurality of guard rods 4 to 4 which are mounted on, and attached to, the installation base 3 at prescribed intervals, which are extended and situated in a direction perpendicular to the arm 1A so as to be inclined and which have a desired length.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention protects the periphery of an arm to which a supporting member such as an insulator for supporting a power transmission line or the like is attached in a steel tower of the power transmission line or the like, in particular, a current-carrying portion of the supporting member from damage such as birds. It is about the arm guard that does.

[0002]

2. Description of the Related Art Now, in a steel tower of a power transmission line or the like, a bird's nest is easily formed around an arm to which a supporting member is attached, for example, an insulator or the like for supporting the power transmission line. There have been many accidents (obstacles due to birds) in which the energized parts of the supporting member are short-circuited by the member, particularly short-circuit accidents due to the member being dropped when being carried and forming a nest. And in order to prevent the obstacles caused by this bird,
Various preventive measures have been devised.

[0003]

However, under the present circumstances, none of the conventional means for preventing an injury caused by a bird is satisfactory. Therefore, the present invention
In view of the above points, the structure and attachment to the arm are simple,
Moreover, it is an object of the present invention to provide an arm guard in a steel tower of a power transmission line or the like, which can protect the energized portion of the support member from a member carried to form a nest by a bird as much as possible.

[0004]

In order to achieve the above-mentioned object, the invention of claim 1 protects the periphery of an arm attached to a support member for supporting a transmission line or the like in a steel tower of the transmission line or the like. A long mounting base arranged in parallel with the arm, an attachment member for mounting the mounting base on the arm, and a predetermined distance from the mounting base. The gist of the present invention is that it is composed of a plurality of guard rods of a desired length which are mounted and extend obliquely in a direction orthogonal to the arm. According to a second aspect of the present invention, the plurality of guard bars form a fixing portion corresponding to a mounting portion with respect to the mounting base, and the length of the lower side from the fixing portion is constant and the upper side of the fixing rod is fixed. The gist is that the length is variable.

[0005]

According to the above-mentioned structure of claim 1, since the plurality of guard bars are obliquely extended in the direction orthogonal to the arms above the supporting member for supporting the power transmission line and the like, a bird The member carried to form the nest contacts the current-carrying portion of the support member, and in particular, the member carried when dropping the nest is positively moved in the direction of removing the carried member from the current-carrying portion of the support member to the outside. It is eliminated (guided) to prevent short-circuit accidents at the energized parts. Further, according to the above-mentioned configuration of claim 2, each guard rod is extended downwardly from the mounting portion with respect to the mounting base and has a constant length on the lower side and upwardly extended upwardly. Since the side length is variable, the arm guard as a whole can be attached to the arm in a state that appropriately corresponds to the situation of the arm and its surroundings.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 indicates a steel tower for transmission such as framed by a desired shaped steel, on the upper part of which an arm 1A is laterally extended and framed, and a horizontal portion of the arm 1A is hung down. A supporting member 1B including an installed insulator and the like
The transmission line W and the like are supported by the overhead line. The arm 1A is framed by, for example, L-shaped steel.

The arm guard 2 attached to the arm 1A located above the support member 1B of the arm 1A has an elongated mounting base 3 and the mounting base 3 with respect to the mounting base 3. A large number of guard rods 4 to 4 mounted in an extending manner in a direction orthogonal to the longitudinal direction of the mounting base 3 at predetermined intervals along the longitudinal direction, and the mounting base 3 to the arm 1A. It is composed of an attachment member 5 to be mounted on.

The mounting base 3 is formed to have a predetermined length having a gate-shaped cross section, and a fixing plate 6 is attached to a back surface of a substantially central portion in the longitudinal direction in a direction orthogonal to the longitudinal direction. Elliptical first mounting holes 6a and 6b are formed near both ends of the plate 6. Then, in the gate-shaped portion of the mounting base 3, insertion holes 7a to 7b through which guard rods 4 to 4 to be described later are inserted at predetermined intervals along the longitudinal direction are formed over the compatible pieces, and the insertion holes 7a are formed. 7a to 7b, the insertion holes 7a to 7a penetratingly provided in the standing piece on one side are formed to have substantially the same diameter as the guard rod 4 described later, and the insertion holes 7b penetratingly provided to the standing piece on the other side. 7b are slightly larger than the insertion holes 7a-7a,
That is, it is formed to be substantially the same as the fixed portion 9 formed on the guard rod 4 described later. Further, second mounting holes 8a and 8b are provided in the upper surface of the gate-shaped portion of the mounting base 3 in the vicinity of both ends in the longitudinal direction. The fixed plate 6 is preferably attached to the mounting base 3 in a predetermined inclined shape.

The plurality of guard rods 4 to 4 are formed of an insulating material such as synthetic resin in the shape of, for example, pipes or round rods, and are formed so as to correspond to the mounting sites for the mounting base 3 having a slightly larger diameter. The fixed portions 9 to 9 are made to have a constant length on one side (the lower side when mounted) and a variable length on the other side (the upper side when mounted). Are formed so that they have different shapes.

Therefore, the guard bars 4 to 4 are inserted into the insertion holes 7a to 7a formed on the mounting base 3 as compatible pieces, and the fixing portions 9 to 9 have large diameter insertion holes 7b. ~ 7
The position is set by contacting the small-diameter insertion holes 7a to 7a from b. Then, the pressing piece 1 having an L-shaped cross section
The number of guard rods 4 to 4 is fixed to the mounting base 3 by 0. That is, semicircular contact recesses 10a to 10a are formed at one end of the L-shaped pressing piece 10 so as to abut the end surfaces of the fixing portions 9 to 9, and the second mounting hole is formed on the other piece. Mounting holes 10b that match the mounting holes 8a and 8b,
10b is formed, and in the state in which the guard bars 4 to 4 are inserted into the insertion holes 7a to 7a and 7b to 7b of the mounting base 3 as described above, the contact recesses 10a to 10a thereof.
A is fitted so as to abut the end faces of the fixed portions 9 to 9 of the guard rods 4 to 4 and fastened with bolts 11 by using both mounting holes 8a, 8b and 10b, 10b.

The attaching member 5 is formed in a substantially right-angled V-shape so as to match the bent portions 5a and the fixing plates 6 of the mounting base 3 laterally from both rising ends of the bent portions 5a. And the contact plate portions 5b and 5b, and the contact plate portions 5b and 5b are provided with mounting holes 12a and 12b that match the first mounting holes 6a and 6b. Then, the first mounting holes 6a, 6b and the mounting holes 12a, 1
A fixing bolt and a nut 13 are located at 2b.

In order to mount the entire arm guard 2 on the arm 1A of the steel tower 1, however, the arm 1A located above the support member 1B including an insulator or the like that supports the power transmission line W or the like in an overhead line. After the bent portions 5a of the attaching member 5 are abutted against each other and the contact plate portions 5b, 5b are aligned with the fixed plate 6 of the mounting base 3, both first mounting holes 6 are formed.
A and 6b and the mounting holes 12a and 12b are matched with each other, and bolts and nuts 13 are used for fastening and fixing.

In this case, the mounting base 3 is positioned such that its longitudinal direction is parallel to the arm 1A, and the mounting base 3 is
The multiple guard rods 4 to 4 attached to the arm are attached to the arm 1A.
And is obliquely extended in a direction orthogonal to (the direction perpendicular to the longitudinal direction of the mounting base 3). That is, each of the multiple guard bars 4 to 4 is positioned obliquely toward the outside with a fixed length on one side (lower side) centering around the fixed portions 9 to 9 with respect to the mounting base 3. The upper side of the support member 1B including an insulator or the like that supports the power transmission line W or the like in an overhead line is guarded (protected), and the other side (upper side) is positioned obliquely toward the upper inner side with each variable length. The upper part of the support member 1B including an insulator or the like that supports the power transmission line W and the like in an overhead line is guarded (protected).

The arm guard 2 of this example is constructed as described above, and is attached to the arm 1A at a portion located above the support member 1B including an insulator or the like that supports the power transmission line W and the like in the steel tower 1 in an overhead line shape. Since the upper part of the support member 1B is guarded (protected), the member carried by the bird to form the nest hits the energized part of the support member 1B, and the energized part is short-circuited. , A member capable of preventing obstacles caused by birds in advance and dropping particularly when being carried and forming a nest, has one side centered around the fixing portions 9 to 9 with respect to the mounting base 3 mounted on the arm 1A ( The lower side) is positioned in a slanted shape toward the lower outer side with a constant length, and the other side (upper side) is positioned in a slanted shape directed toward the upper inner side with varying lengths. And by the outside In which it is possible to prevent the striking current site of the support member 1B actively eliminated (guide).

In this example, the guard rods 4 to 4
4 is an insertion hole 7 formed as a compatible piece with respect to the mounting base 3.
a) to 7a, and the fixing portions 9 to 9 are set from the large diameter insertion holes 7b to 7b to the small diameter insertion holes 7a to 7a to set their positions. The attachment of a large number of guard bars 4 to 4 to the base 3 becomes extremely simple.

Further, each of the plurality of guard bars 4 to 4 has an inclined shape in which one side (lower side) has a constant length and is directed outward toward the lower outside with the fixing portions 9 to 9 to the mounting base 3 as the center. The upper side of the support member 1B including the insulator or the like, which is positioned and has the other side (upper side) obliquely directed to the upper inner side with variable lengths and supporting the power transmission line W and the like in an overhead line, is guarded (protected). Therefore, the entire arm guard 2 for the arm 1A can be mounted in a state that accurately corresponds to the situation of the arm 1A and its surroundings.

In this embodiment, the bent portion 5a of the attachment member 5 is formed in a substantially right angle V shape so as to correspond to the L-shaped steel material of the arm 1A. When a material other than L-shaped steel is used as the material of the arm 1A, the shape of the bent portion 5a is also changed correspondingly.

Further, as shown in FIG. 5, the fixing plate 6 of the mounting base 3 and the attachment member 5 are integrally formed on one end side, and a hinge 14 is provided on the top of the bent portion 5a of the attachment member 5. Is provided, and the contact plate portion 5b on one side and half of the bent portion 5a are integrally tiltable (openable and closable), so that the attachment member 5 is attached to the arm 1A, that is, the arm guard 2 The whole can be easily attached.

[0019]

As described above, according to the present invention, a plurality of guard bars are obliquely extended in the direction orthogonal to the arms above the support member for supporting the power transmission line and the like. ,
A member carried to form a nest by a bird comes into contact with a current-carrying portion of the support member, and in particular, a member that falls when forming a nest is positively moved outward from the current-carrying portion of the support member. It can be eliminated (guided) to prevent short circuit accidents at the energized parts.

Further, since it comprises a mounting base, an attachment member and a plurality of guard rods, the structure and attachment to the arm are extremely simple.

Further, each guard rod has a constant length on the lower side, which extends obliquely downward from the mounting portion for the mounting base, and has a variable length on the upper side, which extends obliquely upward. Therefore, the entire arm guard for the arm can be mounted in a state that accurately corresponds to the situation of the arm and its surroundings.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of the present invention and showing a mounting state of arm guards on a steel tower.

FIG. 2 is a partially cutaway plan view showing the entire arm guard.

FIG. 3 is likewise a front view showing the entire arm guard.

FIG. 4 is likewise a side view showing the entire arm guard.

FIG. 5 is a perspective view showing a modified example of the attachment member of the arm guard.

[Description of sign]

 1 Steel Tower 1A Arm 1b Supporting Member 2 Arm Guard 3 Mounting Base 4 Guard Rod 5 Attachment Member 9 Fixed Section W Transmission Line

Front page continuation (72) Inventor Nobuyoshi Tsujita 1010-1 Kubo Isshiki, Komaki-shi, Aichi Chubu Electric Power Co., Inc. Komaki Electric Power Center (72) Inventor Kenji Suzuki 1010 Tsukuda-Ikubo, Komaki, Aichi Prefecture 1 Chubu Electric Power Co., Inc. Komaki Electric Power Center (72) Inventor Terushi Shigeru, 1-17, Koume-cho, Showa-ku, Nagoya, Aichi Prefecture Sankyo Corporation (72) Inventor Kensei Horibe 1-chome, Koume-cho, Showa-ku, Nagoya, Aichi Prefecture No. 17 Sankyo Co., Ltd.

Claims (2)

[Claims] 1. An arm guard for protecting the periphery of an arm to which a support member for supporting the power transmission line or the like is attached in a steel tower of the power transmission line or the like, and the mounting base is elongated and arranged in parallel with the arm. A base, an attachment member for mounting the mounting base to the arm, and a mounting member mounted at a predetermined interval with respect to the mounting base and extending obliquely in a direction orthogonal to the arm. An arm guard in a tower such as a transmission line, which is composed of a plurality of guard rods of a predetermined length. 2. The plurality of guard bars form a fixed portion corresponding to a mounting portion with respect to a mounting base, and a length from the fixed portion to a lower side is constant and an upper side is fixed. The arm guard in a steel tower for a power transmission line or the like according to claim 1, wherein the arm guard is variable.