JP2022114855A - Bird damage prevention instrument - Google Patents

Abstract

To provide a technology for improving the workability of the attachment of a bird damage prevention instrument.SOLUTION: A bird damage prevention instrument 1 used by being attached to an overhead line 5, and hanging an avoidance line 7a along the overhead line comprises a main body part 11, and an extension part 13. The main body part 11 is constituted so as to be capable of supporting the overhead line 5. The extension part has a support part which is constituted so as to be capable of supporting the avoidance line 7a. Also, the extension part 13 is rotatably connected to the main body part 11 with a prescribed rotating shaft 83 as a center. The support part is located at a reference direction side compared to the rotating shaft 83 when setting a direction progressing toward the rotating shaft 83 from the center of gravity 84 of the extension part 13 as a reference direction.SELECTED DRAWING: Figure 3

Description

FIELD OF THE DISCLOSURE The present disclosure relates to a bird deterrent that is attached to an overhead line and hangs a repellent wire over the overhead line.

In order to prevent birds from flying over the overhead wires, there are cases where a repellent wire for preventing bird damage is hung above the overhead wires. A bird damage preventer is used to hang the repellent wire above the overhead line, and a plurality of bird damage preventers are installed on the overhead line at predetermined intervals along the longitudinal direction of the overhead line. The bird arrester includes a portion for attaching to the overhead wire and a portion for supporting the repellent wire.

JP 2013-141452 A

Overhead lines are placed high above the ground. Therefore, a worker who installs a bird damage prevention device moves directly under the overhead wire using, for example, an aerial work platform. However, in the environment around the overhead wires or in the case of so-called vertical pulling, in which the overhead wires are arranged vertically, it may be difficult to move and work directly under the overhead wires. In addition, when a bar-shaped device is used to attach and detach the bird damage prevention device, another overhead wire may interfere with the device operation. For example, in the case of a vertical line where the overhead lines are arranged in three stages, upper, middle and lower, if you try to install a bird damage prevention device on the upper overhead wire, the device will be attached to the middle and lower overhead wires directly below. It may interfere with installation, such as contact.

An object of the present disclosure is to propose a technique for improving the workability of installing a bird damage prevention device.

One aspect of the present disclosure is a bird damage prevention device that is used by being attached to an overhead wire and suspends a repellent wire along the overhead wire, and includes a body portion and an extension portion. The main body is configured to be attachable to an overhead line. The extending portion has a supporting portion configured to support the avoidance line. Also, the extending portion is connected to the main body portion so as to be rotatable around a predetermined rotation axis. When the direction from the center of gravity of the extending portion toward the rotation axis is taken as a reference direction, the support portion is located on the reference direction side of the rotation axis.

According to such a configuration, the extending portion is rotationally displaced so that the center of gravity is located below the rotating shaft, so that the supporting portion is positioned above the rotating shaft. Therefore, even in a situation where the main body is attached to the overhead wire so as to be inclined with respect to the vertical direction, the supporting portion is positioned above the rotating shaft. Therefore, for example, when the main body is attached to an overhead wire, the main body can be oriented obliquely while maintaining the position of the evasion line above the rotating shaft. As a result, the bird damage preventer can be attached more easily from the front side of the overhead wire, and as a result, workability in mounting the bird damage preventer can be improved. Here, the near side means the side of the worker when the overhead wire is arranged in the front and the left and right directions as viewed from the worker.

In the bird damage prevention device described above, the support portion, the rotation shaft, and the center of gravity of the extension portion may be positioned substantially on a straight line.
According to such a configuration, the support portion is positioned above the rotating shaft. Therefore, it becomes easier to keep the position of the avoidance line on the upper side.

In the bird damage prevention device described above, the rotating shaft may have a length in substantially the same direction as the length direction of the overhead wire. The extension may comprise at least one outer portion positioned at a different position relative to the length of the overhead wire than the main portion.

According to such a configuration, the position of the center of gravity of the extending portion can be adjusted by adjusting the position of the outer portion.

In the bird damage preventer described above, the outer portions may be arranged on both sides of the body portion, and may be arranged such that the inner surfaces face each other.
According to such a configuration, the extending portions can balance the weight between the opposing portions in the length direction of the overhead wire. Therefore, inclination of the extension in the length direction of the overhead wire is suppressed, and as a result, the rotation of the extension can be performed smoothly.

In the bird damage prevention device described above, the extending portion may have a thickness portion that protrudes from the main body portion in the length direction of the overhead wire.
According to such a configuration, the weight can be adjusted while suppressing the contact with the main body and the overhead wire by making the extending portion thicker in the length direction of the overhead wire. Therefore, the position of the center of gravity of the extension can be adjusted by adjusting the thickness of the extension.

In the bird damage preventer described above, the extension may include a portion made of a relatively high-density material and a portion made of a relatively low-density material.
With such a configuration, it is possible to adjust the center of gravity by varying the density depending on the portion of the extension. In particular, the center of gravity of the extension can be adjusted downward by arranging the portion made of a relatively high-density material below the portion made of a relatively low-density material. can.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the bird damage prevention device of embodiment, Comprising: FIG. 1A is a front view, FIG. 1B is a right side view. Fig. 2A is a right side view showing a state in which the lid portion is closed and the moving portion is lowered, and Fig. 2B is a right side view in a state where the lid portion is open; It is a plan view. FIG. 3A is a view showing the bird damage preventer of the embodiment, which is a right side view when the main body is in the second position, and FIG. 3B is a right side view showing the conventional bird damage preventer. Fig. 4A is a front view and Fig. 4B is a right side view showing a modification of the bird damage prevention device; FIG. 10 is a right side view showing a modified example of the bird damage preventer when the main body is at the second position;

Exemplary embodiments of the present disclosure are described below with reference to the drawings.
[1. embodiment]
[1-1. Overall configuration of bird damage prevention device]
The bird damage prevention device 1 of the present embodiment is a device that is used by being attached to an overhead wire, and a repellent wire is hung along the overhead wire. The avoidance line here is a line for bird damage prevention provided above the overhead wire along the overhead wire. As shown in FIGS. 1A-1B, the bird damage preventer 1 includes a body portion 11 and an extension portion 13. As shown in FIGS.

In the following, for convenience of explanation, the structure will be described using up, down, left, right, and front and rear directions. However, the present disclosure is not limited to the above directions in terms of usage and the like. The left-right direction is the length direction of the overhead wire when attached to the overhead wire. In addition, since the avoidance wire exerts a bird damage prevention function by being arranged above the overhead wire, the avoidance wire is usually arranged so as to be positioned above the overhead wire. Therefore, in the following description, the direction in which the avoidance line (the avoidance line 7a) is positioned relative to the overhead line is upward.

[1-2. Main body]
The body portion 11 includes an accommodating portion 21 , a lid portion 23 , a moving portion 25 and an operating member 41 . The body portion 11 is configured to be attachable to the overhead wire 5 . By attaching the body portion 11 to the overhead wire 5, the attachment of the bird damage prevention device 1 to the overhead wire is realized.

As shown in FIGS. 2A and 2B, the housing portion 21 is substantially U-shaped. In other words, the accommodating portion 21 has a substantially annular shape with an open front. The overhead wire can be housed inside the housing portion 21 . The housing portion 21 includes a first wall portion 21a that covers the lower side of the overhead wire and a second wall portion 21b that covers the upper side of the overhead wire. In addition, the housing portion 21 includes a columnar connecting post 72 extending from above the second wall portion 21b.

The lid portion 23 is a substantially rectangular plate-like member and is provided at the opening portion of the housing portion 21 . One end in the longitudinal direction of the lid portion 23 is rotatably connected with the end portion of the second wall portion 21b on the opening side of the housing portion 21 as a fulcrum. Also, the lid portion 23 is formed such that one end side connected to the second wall portion 21b is wider in the left-right direction than the other end side opposite to the one end side. A fixing hole 33 is provided near the other end of the lid portion 23 . The protrusion 31 provided at the opening-side end of the first wall portion 21 a can be inserted and fitted into the fixing hole 33 .

The lid portion 23 has a closed position (see FIGS. 1B and 2A) in which the opening portion of the storage portion 21 is closed to form an annular body together with the storage portion 21, and an open position (see FIG. 2A) in which the opening portion of the storage portion 21 is opened. 2B) and .

A space inside the annular body formed by the housing portion 21 and the lid portion 23 in the closed position is an insertion space 27 into which the overhead wire 5 can be inserted. When the lid portion 23 is at the open position, the overhead wire 5 can be put in and taken out of the insertion space 27 . When the lid portion 23 is at the closed position, the overhead wire 5 cannot be put in or taken out of the insertion space 27.例文帳に追加

The moving portion 25 is configured to be vertically movable between the first wall portion 21 a and the second wall portion 21 b of the housing portion 21 . As shown in FIGS. 2A and 2B, when the moving portion 25 is in the open position close to the first wall portion 21a, the space in the insertion space 27 into which the overhead wire 5 can be inserted (that is, the second wall portion 21b and the moving part 25) becomes wider. At this time, the lid portion 23 can be freely opened and closed.

A lid fixing portion 35 is formed at the end portion of the moving portion 25 on the lid portion 23 side. When the moving portion 25 is in the fixed position relatively close to the second wall portion 21b, the overhead wire 5 is sandwiched between the moving portion 25 and the second wall portion 21b. At this time, as shown in FIG. 1A, the lid fixing portion 35 engages the wide portion of the lid portion 23 in the closed position, so that the opening of the lid portion 23 is suppressed.

The operation member 41 is a portion for performing an operation of holding the overhead wire by operating the moving portion 25 . The operation member 41 is a columnar member having a hexagonal cross section, and is configured to be rotatable around a vertical rotation shaft 41a below the first wall portion 21a.

The body portion 11 is provided with a protruding portion 43 which is disposed so as to penetrate the first wall portion 21a and has a length in the vertical direction. When the operation member 41 is rotated, the amount of projection of the projecting portion 43 from the first wall portion 21a increases or decreases depending on the direction of rotation. The moving portion 25 is connected to the upper end of the projecting portion 43 . Therefore, when the operation member 41 is rotated, the moving portion 25 moves vertically inside the insertion space 27 . An annular mounting disc 37 is provided on the upper surface of the first wall portion 21a so as to surround the projecting portion 43. As shown in FIG.

The body portion 11 configured as described above allows the overhead wire to pass through the insertion space 27 (the second wall portion 21b and the moving portion 25) when the lid portion 23 is in the open position and the moving portion 25 is in the open position. ) and withdrawn from the insertion space 27 . With the overhead wire inserted into the insertion space 27, the lid portion 23 is closed and the operation member 41 is operated to move the moving portion 25 to the fixed position. An overhead wire is sandwiched between and the bird damage preventer 1 is fixed to the overhead wire. At this time, since the lid portion 23 is engaged with the lid fixing portion 35, rotational displacement toward the open position is suppressed. Therefore, the overhead wire is prevented from slipping out of the insertion space 27 .

[1-3. extension part]
The extending portion 13 is provided at a position above the accommodating portion 21 and is configured to be able to support the avoidance line at a predetermined position with the body portion 11 as a reference.

The extending portion 13 includes a pair of left and right side plates 51 positioned above the connecting post 72 . The side plates 51 are flat plates elongated in the vertical direction, are arranged side by side so as to face each other, and are connected at their upper end portions.

The extending portion 13 includes a pair of weight portions 81 arranged on both sides of the main body portion 11 so that the inner surfaces thereof face each other. The weight portion 81 is arranged at a position different from that of the main body portion 11 in the left-right direction. The weight portions 81 have a fan-like shape that spreads downward, and are arranged so as to face each other with the connecting post 72 interposed therebetween. The weight portion 81 protrudes in the left-right direction from the main body portion 11 .

The extending portion 13 also includes a bar-shaped shaft portion 82 extending in the left-right direction at the lower portion of the side plate 51 . Shaft locking portions 821 are provided at both ends of the shaft portion 82 . The shaft locking portion 821 locks the shaft portion 82 from coming out of a through hole 822 and a through hole 823 which will be described later. The extending portion 13 has a through hole 822 penetrating through the side plate 51 and the weight portion 81 . Further, the connecting post 72 has a through hole 823 penetrating through the connecting post 72 . The shaft portion 82 is accommodated in the through holes 822 and 823 . With the configuration described above, the extension portion 13 is rotatable about the rotation shaft 83 with respect to the connecting post 72 (that is, the main body portion 11).

The extending portion 13 also has a holding hole 53 near the upper end of the side plate 51 . Although not shown, the holding hole 53 is configured to be able to insert a bundled repellent line and to hold the inserted repellent line.

The extending portion 13 includes a fixture 61, locking grooves 63a and 63b, and the like. The fixture 61 is arranged between the pair of side plates 51 . The locking groove 63 a and the locking groove 63 b are provided in each of the pair of side plates 51 .

The fixture 61 is fixed to the extending portion 13 so as to be rotatable around a rotating shaft 65 having an axis extending in the left-right direction. The rotating shaft 65 is provided inside the pair of side plates 51 .
The fixture 61 is operated when fixing the avoidance line. The fixture 61 is fixed to the extending portion 13 when positioned at the folding position, which is a predetermined rotational position. After arranging the escape line so as to pass through the engaging groove 63a or the engaging groove 63b, the escape line is fixed to the extension portion 13 by moving the fixture 61 to an appropriate folding position. When the direction from the center of gravity 84 of the extending portion 13 toward the rotating shaft 83 is defined as a reference direction, the locking grooves 63 a and 63 b are located on the reference direction side of the rotating shaft 83 .

[1-4. Description of Rotational Motion of Shaft]
When the body portion 11 is in the first position shown in FIG. 1B, the center of gravity 84 of the extension portion 13 is below the rotating shaft 83, so the locking grooves 63a and 63b are above the rotating shaft 83. Located in On the other hand, even when the body portion 11 is at the second position different from the first position shown in FIG. , the locking groove 63 a and the locking groove 63 b are positioned above the rotating shaft 83 . The first position and the second position are positions determined by the mounting angle of the main body 11 with respect to the overhead wire 5 .

[1-5. effect]
According to the embodiment detailed above, the following effects are obtained.
(1a) In the bird damage prevention device 1 of the present embodiment, even when the body portion 11 is at the second position, the extension portion 13 is rotationally displaced so that the center of gravity 84 is positioned below the rotation shaft 83. The stop groove 63 a and the locking groove 63 b are positioned above the rotating shaft 83 . Therefore, for example, when attaching the main body 11 to an overhead wire, the main body 11 can be oriented obliquely while maintaining the position of the evasion line above the rotating shaft 83 . As a result, the bird damage preventer 1 can be mounted more easily from this side of the overhead wire, and as a result, workability of mounting the bird damage preventer 1 can be improved. Here, the near side means the side of the worker when the overhead wire is arranged in the front and the left and right directions as viewed from the worker.

Further, as shown in FIG. 3B, in the conventional bird damage prevention device 100 in which the body portion 111 and the extension portion 113 move integrally without having the rotating shaft 83, the body portion 111 and the extension portion 113 are integrally inclined with respect to the vertical direction. At this time, the distance α in the longitudinal direction between the avoidance wire and the overhead wire is longer than the distance β in the longitudinal direction between the avoidance wire and the overhead wire in the bird damage prevention device 1 of the present embodiment. In other words, the bird damage preventer 1 of the present embodiment is more effective in repelling than the conventional bird damage preventer 100 when the main body 11 is attached to the overhead wire so as to be inclined with respect to the vertical direction. The distance in the longitudinal direction between the line and the overhead line is shortened. Therefore, flying birds can be suppressed.

In addition, even if the main body 11 tilts due to twisting of the overhead wire due to age or temperature change, the avoiding wire is positioned above the overhead wire. Therefore, it is possible to sustain the suppression of flying birds.

(1b) In the bird damage prevention device 1 of the present embodiment, the locking grooves 63a and 63b, the rotating shaft 83, and the center of gravity 84 of the extending portion 13 are positioned substantially in a straight line. With such a configuration, the locking grooves 63 a and 63 b are positioned above the rotating shaft 83 . Therefore, it becomes easier to keep the position of the avoidance line on the upper side.

(1c) The bird damage preventer 1 of this embodiment includes a pair of weights 81 . According to such a configuration, the extending portion 13 can balance the weight between the weight portions 81 in the left-right direction. Therefore, tilting of the extending portion 13 in the left-right direction is suppressed, so that the extending portion 13 can be rotated smoothly.

(1d) In the bird damage preventer 1 of the present embodiment, the weight portion 81 protrudes laterally from the main body portion 11 . According to such a configuration, the weight can be adjusted while suppressing contact with the main body 11 and the overhead wire by making the extending portion 13 thicker in the left-right direction. Therefore, by adjusting the thickness of the extending portion 13, the position of the center of gravity 84 of the extending portion 13 can be adjusted.

In this embodiment, the locking groove 63a and the locking groove 63b correspond to the support portion, and the weight portion 81 corresponds to the outer portion and the thickness portion.
[2. Other embodiments]
Although the embodiments of the present disclosure have been described above, it is needless to say that the present disclosure is not limited to the above embodiments and can take various forms.

(2a) In the above embodiment, the configuration including the fan-shaped weight portion 81 was exemplified, but the shape of the weight portion 81 is not limited to this. For example, as shown in FIGS. 4 and 5, it may have a shape in which there are weighted portions in the front and rear, and the center of the front and rear is open.

Further, in the above-described embodiment, the configuration including the pair of weight portions 81 was illustrated, but the arrangement of the weight portions 81 is not limited to this. The weight portion 81 may be arranged only on one side of the body portion 11 in the left-right direction. Also, the number of weight portions 81 is not limited to this. For example, the number of weight portions 81 may be one, or three or more. Further, the bird damage prevention device 1 does not have to include the weight portion 81 . In this case, for example, by using a shape other than the weight portion 81 or by arranging a heavy object such as metal, the center of gravity of the extension portion 13 can be arranged opposite to the locking groove 63a and the locking groove 63b around the rotation axis. It may be designed to be on the side.

Further, in the above-described embodiment, the configuration in which the weight portion 81 protrudes in the left-right direction was exemplified, but the thickness of the weight portion 81 is not limited to this. For example, the thickness of the weight portion 81 may be such that it fits inside the width of the body portion 11 in the left-right direction.

Here, the weight portion 81 may be formed taking into account the weight of the avoidance line. Specifically, the weight is arranged so that the center of gravity 84 of the extending portion 13 is located below the rotation shaft 83 even if the load applied to the locking groove by the avoidance line is added while the avoidance line is held. It is preferable to adjust the type and weight position.

(2b) In the above embodiment, the locking grooves 63a and 63b, the rotating shaft 83, and the center of gravity 84 of the extending portion 13 are arranged on a straight line. However, the position of the center of gravity 84 need not be the position described above. As long as the locking groove 63a and the locking groove 63b are positioned closer to the reference direction than the rotating shaft 83, the extending portion 13 can take various forms. Moreover, the bird damage prevention device 1 may be configured such that the position of the center of gravity 84 can be changed. For example, the weight may be detachable.

(2c) The extending portion 13 may include a portion made of a relatively high-density material and a portion made of a relatively low-density material. For example, the lower portion of the weight portion 81 may be made of metal, and the other portion may be made of resin.

(2d) The function of one component in the above embodiments may be distributed as multiple components, or the functions of multiple components may be integrated into one component. Also, part of the configuration of the above embodiment may be omitted. Also, at least a part of the configuration of the above embodiment may be added, replaced, etc. with respect to the configuration of the other above embodiment.

(2e) The bird damage preventer 1 exemplified in each of the above embodiments is merely an example showing a specific embodiment. The shape, the specific structure of the locking groove 63a and the locking groove 63b, etc. are not limited in any way, and various configurations are possible.

DESCRIPTION OF SYMBOLS 1... Bird damage prevention device, 5... Overhead wire, 7a... Avoidance wire, 11, 111... Main body part, 13, 113... Extension part, 21... Accommodating part, 21a... First wall part, 21b... Second wall part , 23 Lid portion 25 Moving portion 27 Insertion space 31 Protrusion 33 Fixing hole 35 Lid fixing portion 37 Mounting disc 41 Operation member 41a, 65, 83 Rotation shaft 43 Protrusion 51 Side plate 53 Holding hole 61 Fixing tool 63a, 63b Retaining groove 72 Connecting post 81 Weight 82 Shaft 84 Center of gravity 91... Straight line, 100... Conventional bird damage prevention device, 821... Shaft locking portion, 822, 823... Through hole.

Claims (6)

A bird damage prevention device that is attached to an overhead wire and that hangs a repellent wire along the overhead wire,
a main body configured to be attachable to the overhead wire;
an extending portion having a supporting portion configured to support the avoidance line;
with
The extending portion is rotatably connected to the main body portion about a predetermined rotation axis,
A bird damage prevention device, wherein the support portion is positioned closer to the reference direction than the rotation shaft when a direction from the center of gravity of the extension portion toward the rotation shaft is set as a reference direction. The bird damage prevention device according to claim 1,
A bird damage prevention device, wherein the supporting portion, the rotating shaft, and the center of gravity of the extending portion are positioned substantially on a straight line. The bird damage prevention device according to claim 1 or claim 2,
The rotating shaft has a length in substantially the same direction as the length direction of the overhead wire,
The bird damage arrester, wherein the extending portion includes at least one outer portion arranged at a different position than the body portion with respect to the length direction of the overhead wire. The bird damage prevention device according to claim 3,
The bird damage preventer, wherein the outer portions are arranged on both sides of the main body portion, and are arranged so that the inner surfaces face each other. The bird damage preventer according to any one of claims 1 to 4,
The bird damage prevention device, wherein the extending portion has a thickness portion that protrudes from the main body portion in the length direction of the overhead wire. The bird damage preventer according to any one of claims 1 to 5,
The bird damage deterrent, wherein the extending portion includes a portion made of a relatively high-density material and a portion made of a relatively low-density material.

Images