JP7455507B2 - How to install nest prevention devices - Google Patents

Description

The present invention relates to a nesting prevention device for preventing birds from nesting in electrical equipment, and a method for installing the nesting prevention device.

Nest prevention devices are attached to various electrical equipment, such as power receiving and substation equipment, power generation equipment, in-house line equipment, and lightning protection equipment, for the purpose of suppressing the flight and nesting of birds. Nesting prevention devices prevent birds from flying in and nesting by creating physical obstacles around the live parts of various electrical equipment where there is a risk of power outage accidents caused by flying birds or nesting. suppress.

Conventional nest prevention tools require access to the live parts of various electrical equipment when they are attached to the live parts. For this reason, when installing the conventional nesting preventive device, it was necessary to turn off the power to the charged part in order to avoid electric shock to the worker due to approaching the charged part.

As a related technology, specifically, in the past, for example, in a structure in which electrically live parts are close to each other, such as a steel structure in a substation or a power transmission line tower, bird nesting in a position near the live part of the structure has been investigated. In order to prevent this, a rope is passed between a plurality of reinforcing members in the reinforced part of the structure and is suspended vertically downward, and a cylindrical pipe member through which the rope can be inserted is diagonally downwardly disposed around the cylindrical pipe member. There is a technique related to a nest prevention device and a method for removing a nest in a structure configured with a plurality of branch members protruding radially toward the object (see, for example, Patent Document 1 below).

In addition, as a related technology, specifically, conventionally, for example, a cylindrical body formed in a cylindrical shape, a split part formed along the axial direction of the cylindrical main body, and both sides sandwiching the split part. A main body member having a rail portion provided on the bottom, a mounting base formed in a long plate shape, a plurality of needle-shaped portions, and a runner portion provided at a position facing each rail portion on the back surface of the mounting base. There is a technology related to a bird damage prevention tool that includes a mounting member having the following (for example, see Patent Document 2 below).

Further, as a related technique, specifically, conventionally, for example, a plurality of bird damage prevention members arranged at predetermined intervals and a pair of elongated members on which these bird damage prevention members are hooked are provided, and each There is a technique related to a bird damage prevention device that is attached to an overhead electric wire by inserting the overhead electric wire into each insertion hole of a bird damage prevention member (see, for example, Patent Document 3 below).

Japanese Patent Application Publication No. 2012-125175 Patent No. 6100636 Patent No. 5602080

However, the conventional technology described in Patent Document 1 mentioned above prevents nesting by brushing off twigs and the like that constitute the nest with a rope, and does not prevent birds from flying in or nesting itself. The problem was that it was difficult.

Further, the conventional bird damage prevention devices described in Patent Document 2 and Patent Document 3 mentioned above are all attached by covering electric wires, so they cannot be attached to particularly high-voltage electric circuits. Specifically, the bird damage prevention device according to the conventional technology described in Patent Document 2 and Patent Document 3 mentioned above is suitable for use on steel structure beams installed in the premises of power plants and substations, for example. There is a problem in that it is difficult to attach to a member that is connected to other members, such as a post that supports a steel beam, and it is difficult to prevent birds from flying in or nesting.

In order to solve the problems with the prior art described above, this invention aims to ensure the safety of workers and improve workability during installation work, and to prevent birds from flying in and nesting. The purpose of this invention is to provide a method for installing a prevention device and a nest prevention device.

In order to solve the above-mentioned problems and achieve the object, the nest prevention device according to the present invention includes a rod-shaped core portion and a band-shaped spiral wound around the axis of the core rod portion. The present invention is characterized in that it includes a repellent portion having a protrusion projecting in the outer circumferential direction of a circle centered on the axis.

Further, the nest prevention device according to the present invention is characterized in that, in the above invention, the repellent portion is elastically deformable along the axial direction.

Further, the nesting prevention device according to the present invention is characterized in that, in the above invention, the core rod portion has a hollow tube shape.

Further, the nest prevention device according to the present invention is characterized in that the core rod portion includes a through hole that penetrates the tubular side wall along the thickness direction of the side wall.

Further, the nest prevention device according to the present invention is characterized in that the core rod portion is constituted by a mesh-like sheet member formed into a tubular shape.

Further, in the nest prevention device according to the present invention, in the above invention, the core rod portion is constituted by a plurality of core rod members each having a rod shape, and the end portion of each core rod member in the longitudinal direction is The core rod member is provided with a connecting mechanism for connecting the core rod members to each other, and the plurality of core rod members are connected in the length direction by the connecting mechanism.

Further, in the nest prevention device according to the present invention, in the above invention, the connecting mechanism is provided in a recess provided at an end of one of the core rod members and at an end of the other core rod member. It is characterized by being comprised of a convex portion.

Furthermore, the nesting prevention device according to the present invention is characterized in that, in the above invention, the recessed portion is provided with a female screw, and the convex portion is provided with a male screw that is screwed into the female screw. .

Further, in the nest prevention device according to the present invention, in the above invention, the coupling mechanism further includes a through hole that passes through the recess and the projection in a state where the recess and the projection are fitted together; A pin-shaped member inserted into the through-hole.

Further, in the nest prevention device according to the present invention, in the above invention, the connection mechanism is provided at an end of the core rod member on one side and a female screw provided on the end of the core rod member on the other side. and a male thread that is screwed into the female thread.

Further, the method for installing the nest prevention device according to the present invention includes a core rod portion having a rod shape, and a band shape spirally wound around the axis of the core rod portion, The core rod portion of the nest prevention device is provided with a repellent portion having a protrusion protruding in the outer circumferential direction of a circle, and the core rod portion is moved along the extending direction of the installation target member from one end side in the axial direction of the core rod portion. It is characterized in that it is installed on the installation target member by pushing it out.

According to the nesting prevention device and the method of installing the nesting prevention device according to the present invention, it is possible to ensure the safety of workers and improve workability during installation work, and to prevent birds from flying in and nesting. Therefore, it is possible to provide a nest-preventing device and a method for installing the nest-preventing device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram (part 1) showing the configuration of a nest prevention device according to an embodiment of the present invention. It is an explanatory view (part 2) showing the composition of the nest prevention device of an embodiment concerning this invention. FIG. 2 is an explanatory diagram showing an example of electrical equipment installed in a power plant. FIG. 1 is an explanatory diagram (part 1) showing the installation process of the nest building prevention device 100 according to an embodiment of the present invention. It is an explanatory view (part 2) showing installation work of nesting preventive tool 100 of an embodiment concerning this invention. It is an explanatory view (part 3) showing installation work of nest prevention device 100 of an embodiment concerning this invention. FIG. 4 is an explanatory diagram (part 4) showing the installation work of the nest prevention device 100 according to the embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a nest prevention device and a method for installing a nest prevention device according to the present invention will be described in detail below with reference to the accompanying drawings.

(Configuration of nest prevention device)
First, the structure of a nest prevention device according to an embodiment of the present invention will be described. FIGS. 1 and 2 are explanatory diagrams showing the structure of a nest prevention device according to an embodiment of the present invention. 1 and 2, a nest prevention device 100 according to an embodiment of the present invention includes a core rod portion 110 and a repellent portion 120.

The core rod portion 110 has a rod shape. The core rod portion 110 is configured by connecting a plurality of core rod members 111, each of which has a rod shape, along the length direction. Each of the core rod members 111 constituting the core rod portion 110 has a hollow tube shape. Thereby, the core rod portion 110 has a hollow cylindrical shape. Specifically, the core rod member 111 has a cylindrical shape, for example.

The core rod portion 110 having a tube shape such as a cylindrical shape is provided with a through hole 112 that penetrates a side wall forming the core rod portion 110 along the thickness direction of the side wall. A plurality of through holes 112 are provided throughout the wall surface. In this way, by providing a plurality of through holes 112 on the wall surface of the side wall, the weight of the material used to close the through holes can be reduced compared to an embodiment in which no through hole 112 is provided on the wall surface of the side wall, and the weight of the material used to close the through holes can be reduced. Weight reduction can be achieved.

The core rod portion 110 may be constituted by a mesh-like sheet member formed into a tube shape. This also makes it possible to reduce the weight of the material used to close the gaps provided in the mesh sheet and to reduce the weight of the core rod section 110, compared to the method in which a thin sheet member is formed into a tube shape. can.

The core rod member 111 is preferably made of a material with excellent insulation properties. By forming the core rod member 111 from a material with excellent insulating properties, electricity can be transmitted through the core rod member 111 (core rod portion 110) even when the nest prevention device 100 is installed near a live part. This makes it possible to ensure the safety of workers involved in the installation work of the nest prevention device 100.

Moreover, it is preferable that the core rod member 111 is formed of a material with excellent weather resistance. By forming the core rod member 111 from a material with excellent weather resistance, deterioration of the core rod member 111 over time can be suppressed, and the stability of the nest prevention tool 100 can be ensured over a long period of time.

Specifically, the core rod member 111 is preferably formed using, for example, polycarbonate resin, polyethylene resin, etc., which have excellent weather resistance and insulation properties. Moreover, specifically, the core rod member 111 may be formed using, for example, phenol resin or epoxy resin.

The outer surface of the core rod member 111 may be exposed in the color of the material forming the core rod member 111, or may be patterned or colored. Specifically, for example, it may be colored with a pattern imitating a snake that is repelled by birds, or a color (such as yellow) that birds such as crows are repelled by or cannot recognize.

The core rod members 111 constituting the core rod portion 110 are connected to each other by a connecting mechanism 200. The coupling mechanism 200 can be configured by, for example, a recess provided at the end of one core rod member 111 and a convex portion provided at the end of the other core rod member 111. Specifically, the coupling mechanism 200 includes a recess 201 realized by an opening at one longitudinal end of the core member 111 having a hollow tube shape, and an outer opening at the other end of the core member 111 in the longitudinal direction. The convex part 202 is realized by making the diameter dimension as thin as the inner diameter dimension of the concave part.

Such a coupling mechanism 200 includes a recess 201 provided at one end side of one of the two core rod members 111a arranged along the length direction of each core rod member 111, and The two core rod members 111 are connected by fitting into the convex portion 202 provided on the other end side of the other core rod member 111b. In this way, by connecting the core rod members 111 by fitting the recess 201 and the protrusion 202, it is possible to prevent the two core rod members 111 connected by the connection mechanism 200 from separating.

In the coupling mechanism 200, the recess 201 is provided with a female screw 203, and the convex portion 202 is provided with a male screw 204 that screws into the female screw 203. The female thread 203 provided in the recess 201 and the male thread 204 provided in the protrusion 202 have the same pitch, that is, the dimension between the crests of the threads (or between the troughs).

Such a connection mechanism 200 includes a recess 201 provided at one end side of one of the two core rod members 111 arranged along the length direction of each core rod member 111, one of the core rod members 111a. By screwing in the convex part 202 provided on the other end side of the other core rod member 111b and fitting the concave part 201 and the convex part 202 while screwing the female screw 203 and the male screw 204, the two The core rod members 111 are connected. In this way, by connecting the core rod members 111 by fitting the concave portion 201 and the convex portion 202 and screwing the male screw 204 and the female screw 203, the core rod members 111 can be connected to each other during or after installation of the nest prevention device 100. Separation of the rod member 111 can be more reliably prevented.

The repellent section 120 includes a main body section 121 having a band shape. A plurality of protrusions 122 are provided on one side of the main body 121 and project in a direction away from the one side. The protrusion 122 has, for example, a thin needle-like shape. The repellent part 120 is spirally wound around the axis of the core rod part 110. Thereby, the protrusion 122 protrudes in the outer circumferential direction of a circle centered on the axis of the core rod portion 110.

Moreover, it is preferable that the repellent part 120 is formed of a material with excellent insulation properties. By forming the repellent part 120 with a material with excellent insulating properties, even when the nest prevention device 100 is installed near a live part, electricity can be prevented from being transmitted through the repellent part 120, thereby preventing nest building. The safety of workers involved in the work of installing tool 100 can be ensured.

Moreover, it is preferable that the repellent part 120 is formed of a material with excellent weather resistance. By forming the repellent part 120 using a material with excellent weather resistance, deterioration of the repellent part 120 over time can be suppressed, and the effect of repelling birds can be stably maintained over a long period of time.

Preferably, the repellent portion 120 is formed using a material that exhibits flexibility. By forming the repellent part 120 using a material that exhibits flexibility or flexibility, when a bird flies to the nest prevention device 100, the repellent part 120 can be deformed appropriately according to the weight of the bird. can. Thereby, it is possible to repel birds that fly to the nesting preventive device 100 without causing any damage, thereby preventing nesting.

Moreover, it is preferable that the repellent part 120 is formed using a material that exhibits elasticity. By forming the repellent part 120 using an elastic material, the nest prevention device can be used without deforming the repellent part 120 when a small bird flies in or a relatively lightweight object such as nest material is placed on it. 100, it is possible to repel birds that have flown into the area and reliably prevent nesting.

The repellent part 120 is, for example, a polyolefin, which is a polymer compound synthesized using an olefin (alkene), which is an aliphatic hydrocarbon in which carbon atoms are bonded by double bonds, such as ethylene or propylene, as a monomer. It can be formed using a resin. Specifically, it is preferable that the repellent portion 120 be formed using, for example, polyethylene resin, polypropylene resin, or the like. The repellent part 120 may be formed by integrally forming the main body part 121 and the protrusion 122 using the same material, or by forming the main body part 121 and the protrusion 122 separately using different materials. It may be something.

The repellent part 120 is separate from the core rod part 110. The repellent portions 120 are provided independently for each core rod member 111 in the length dimension in the axial direction of the core rod member 111. In this case, the length of the repellent portion 120 in the direction perpendicular to the rotating surface due to the spiral winding is equal to the length of the core rod member 111 in the axial direction.

By providing the repellent part 120 for each core rod member 111, the operator can adjust the length required for the core rod part 110, such as the length of the steel beam on which the nest prevention device 100 is installed. By simply connecting the core rod members 111, the repellent portion 120 can be arranged in accordance with the entire length of the connected core rod members 111. Thereby, it is possible to reduce the burden on the worker involved in the work of installing the nest prevention device 100, and to improve work efficiency.

Since the repellent part 120 is separate from the core rod part 110, it is elastically deformed in the axial direction of the core rod part 110, that is, in the direction perpendicular to the rotating surface due to spiral winding. can do. When an external force is applied, the repellent part 120 wound spirally around the axis of the core rod part 110 absorbs the external force by contracting. Moreover, when the repellent part 120 is released from the applied external force, it returns to its original shape by its own elastic force.

(Installation work of nest prevention device 100)
Next, the installation work of the nest prevention device 100 according to the embodiment of the present invention will be explained. The nest prevention device 100 according to the embodiment of the present invention is installed, for example, in electrical equipment provided within the premises of a power plant or substation. FIG. 3 is an explanatory diagram showing an example of electrical equipment installed at a power plant. In FIG. 3, various electrical equipment such as a transformer 301, a circuit breaker 302, a disconnector 303, an instrument transformer 304, and a lightning arrester 305 are installed in the premises of the substation.

The transformer 301 transforms the voltage of electricity supplied from the primary side and sends it to the secondary side. The circuit breaker 302 opens and closes load current in power circuits and power equipment, and works with protective relays to shut off fault currents such as short-circuit fault currents when transmitting power, stopping power transmission, or when an accident occurs. Protect equipment and prevent accidents from spreading upstream.

The disconnector 303 opens and closes the voltage of the power circuit when there is no load when inspecting or repairing the transformer 301, the circuit breaker 302, or electric wires. The instrument transformer 304 and lightning arrester 305, which cut off electrical continuity, reduce the abnormal voltage caused by lightning to a voltage lower than the dielectric strength of the electrical equipment, thereby protecting the electrical equipment installed in the substation from abnormal voltage caused by lightning. protect from

Electric wires 306 are connected to each electrical device installed in the substation. Each electrical device sends out electricity supplied via an electric wire 306 connected to the primary side via an electric wire 306 connected to the secondary side. The electric wire 306 is connected to an electric device and is supported by an outdoor steel structure 308 or the like provided around the electric device via an insulator 307 or the like.

The outdoor steel structure 308 is composed of a steel beam 309 formed using a shaped steel or the like, a post (pillar) 310 that supports the steel beam 309, and the like. The steel beam 309 and the post 310 have, for example, a structural structure in which section steel is assembled into a truss structure. The steel members forming the steel beam 309 and the post 310, and the steel beam 309 and the post 310 are connected using bolts and nuts.

During normal power transmission and distribution, each electrical device and wire 306 installed in a substation or the like is applied with a high voltage that could cause an electric shock if touched or approached. In other words, each electric device and the electric wire 306 are in a charging state during normal power transmission and distribution. The outdoor steel structure 308 is installed near electrical equipment that is in a charging state, or supports the electric wire 306 that is in a charging state.

The nest prevention device 100 according to the embodiment of the present invention is installed, for example, on a steel beam 309 in an outdoor steel structure 308. When the conventional nest prevention device 100 is attached to a steel beam, it is necessary to cut off the power to the busbar in order to ensure the safety of workers. In addition, when power is cut off to the busbar, the power outage can extend over a wide range of areas.

On the other hand, power outages at substations are subject to restrictions depending on the season and time of day, and there is a high possibility that a power outage will disrupt supply. The current situation was that it was not easy. If a power outage is difficult, the nest prevention device 100 must be installed while maintaining a distance greater than the access limit distance from the live parts in accordance with the Industrial Safety and Health Regulations. Specifically, the approach limit distance is, for example, 60 cm or more when the voltage is 66 kV.

However, installing the nest prevention device 100 at an unstable height with limited footing while maintaining such a limited approach distance risks both falling from the height and electric shock. Tomo. Although the conventional nesting preventive devices 100 each exhibit a nesting prevention effect when installed, the safety of the installation work is not considered, so nesting preventive devices are not suitable for places where power outages are difficult. 100 was difficult to install.

On the other hand, the nest prevention device 100 according to the embodiment of the present invention has sufficient consideration given to the safety of the workers involved in the installation work. In particular, the nest prevention device 100 according to the embodiment of the present invention can install the nest prevention device inside the steel beam 309 without stepping onto the steel beam 309, and can reliably prevent nesting in the steel beam 309. I can do it.

4 to 7 are explanatory diagrams showing the installation work of the nest prevention device 100 according to the embodiment of the present invention. When installing the nest prevention device 100, the worker 400 holds the nest prevention device 100 and climbs onto the post 310 that supports the steel beam 309 on which the nest prevention device 100 is to be installed. The worker 400 ascends the pole to a position suitable for installing the nest prevention device 100. Specifically, the worker 400 raises the pole to a position where he can reach the connection position between the steel beam 309 on which the nest prevention device 100 is installed and the raised post 310, for example.

At this time, the worker 400 selects the number of core rods necessary to configure the core rod portion 110 having a length that matches the length of the steel beam 309 on which the nest prevention device 100 is installed when connected. Hold the member 111 and climb it onto the post 310. For example, as shown in FIG. 4, a plurality of core rod members 111 can be transported together by placing them in a tool bag 401 that can be carried on the back of an operator 400.

The plurality of core rod members 111 are transported separately. Thereby, the core rod member 111 is not bulky, and it is possible to reduce the workload involved in transporting the core rod member 111. Furthermore, since each of the plurality of core rod members 111 has a hollow shape, the weight of the core rod member 111 can be reduced, which also reduces the burden on the worker 400 involved in transporting the core rod member 111. .

After raising the pole to a position suitable for installing the nest prevention device 100, the worker 400 moves the first core member 111 (see reference numeral 501 in FIG. 5) to the steel beam 309, as shown in FIG. It is pushed out from one end in the axial direction of the first core rod member 111 from one end of the steel beam 309 toward the other end along the extending direction (see arrow 502 in FIG. 5). Then, when the first core rod member 111 is pushed out until the other end of the first core rod member 111 approaches one end side of the steel structure beam 309, the second core rod member 111 (reference numeral in FIG. 601) is connected to the other end of the first core rod member 111.

Then, as shown in FIG. 6, the second core rod member 111 (601) connected to the first core rod member 111 (501) is connected to the steel structure beam 309 from one end toward the other end (see arrow 602 in FIG. 6). The worker 400 attaches a new core member 111 (for example, the second core member 111 (601)) to the core member 111 (for example, the first core member 111 (501)) on the hand side of the worker 400. )), and the operation of pushing out the core rod member 111 from one end of the steel beam 309 toward the other end is repeated for the length of the steel beam 309. Thereby, as shown in FIG. 7, the nest prevention device 100 can be installed from one end of the steel beam 309 to the other end.

When pushing out the core rod member 111, the core rod member 111 may be screwed in while rotating around the axis. Since the repellent part 120 has a spiral shape, by screwing the core member 111 while rotating it around the axis, the gap between the body parts 121 in the axial direction with respect to the connection position with the post 310 in the steel beam 309 is reduced. The position of the gap between the protrusions 122 changes. The core rod member 111 can be pushed out into the steel beam 309 while avoiding unevenness in the steel materials forming the steel beam 309 and the post 310, and in the connection position between the steel beam 309 and the post 310.

Furthermore, when pushing out the core rod member 111, the flexibility and elasticity of the material forming the protrusion 122 may be utilized. Specifically, for example, when pushing out the core rod member 111, if it bumps into unevenness between the steel members that make up the steel structure beam 309 and the post 310, or at the connection position between the steel structure beam 309 and the post 310, , these unevenness may be avoided by deforming the protrusion 122.

This prevents the core rod member 111, which is pushed out to a position away from the worker's 400 hand, from getting caught in irregularities at the connection position between the steel beam 309 and the post 310 by connecting multiple pieces together. can. As a result, the worker 400 can install the nest prevention device 100 on the steel beam 309 without approaching the live part or moving from the position of the post 310 that supports the steel beam 309. I can do it.

Thereafter, the nest prevention device 100 installed on the steel beam 309 is fixed to the steel beam 309 using a cable tie or the like. Thereby, it is possible to reliably prevent the nest prevention device 100 from falling off after installation. At this time, the binding band is fixed to the steel material constituting the steel beam 309, for example, while being passed through any one of the plurality of through holes provided in the core rod member 111.

Further, the core rod member 111 may be provided with a dedicated through hole or ring (both not shown) for fixing the nest prevention tool 100 to the steel beam 309. In this case, the binding band is passed through a dedicated through hole or ring, and then fixed to the steel material forming the steel beam 309. This also allows the nest prevention tool 100 to be fixed to the steel beam 309.

The number of nest prevention devices 100 installed within one steel beam 309 is not limited to one. A plurality of nest prevention devices 100 may be installed within one steel beam 309. In this case as well, by screwing the core rod member 111 while rotating it around the axis, the protrusion 122 on the nest prevention device 100 installed earlier can be avoided, and the projection 122 on the nest prevention device 100 installed later can be screwed in. A plurality of nest prevention devices 100 can be installed within one steel beam 309 without pushing out the nest prevention devices 100.

In the embodiment described above, the recess 201 and the female part provided at one end side of one of the two core rod members 111 arranged along the length direction of each core rod member 111. Although the connection mechanism 200 including the screw 203, the convex portion 202 provided on the other end side of the other core rod member 111b, and the male screw 204 has been described, the configuration of the connection mechanism according to the present invention is limited to this. It's not a thing.

The connection mechanism according to the present invention includes, for example, a recess provided at one end side of one of the two core rod members 111 arranged along the length direction of each core rod member 111. , and a convex portion provided on the other end side of the other core rod member 111b. According to the connecting mechanism having such a configuration, the two core rod members 111 can be connected by fitting the concave portion and the convex portion.

In addition, in the connection mechanism that connects the two core rod members 111 by fitting the concave portion and the convex portion in this way, one of the core rod members 111a and the other core rod member 111b has a concave portion and a convex portion. A through hole (not shown) is provided that passes through the concave part and the convex part in a state where the parts are fitted together, and a pin-like member (not shown) is inserted into the through hole, so that the parts are connected. The two core rod members 111 may be fixed so that they do not separate. As a result, the two core rod members 111 can be easily connected by simply fitting the concave portion and the convex portion, and the two connected core rod members 111 can be used for installation of the nest prevention device 100. It can be securely fixed to prevent it from separating.

In this case, the pin-like member can be realized, for example, by a split pin. A cotter pin is formed by folding a wire having a semicircular cross section into two with the flat surface of the semicircle facing inside. When using a cotter pin, when connecting the two core rod members 111, the cotter pin passed through a through hole that passes through the concave portion and the convex portion may be bent so as to widen the crack. This makes it difficult for the cotter pin to come off, and it is possible to reliably fix the two connected core rod members 111 so that they will not separate during the installation work of the nest prevention tool 100.

Further, a through hole (not shown) is provided at least at the end in the length direction of each core member 111, and one core member 111a and the other core member 111b are bundled through the through hole. It may be fixed with a band. Thereby, the structure of the connection mechanism in the nest prevention tool 100 can be simplified.

As explained above, the nest prevention device 100 according to the embodiment of the present invention has a rod-shaped core portion 110 and a band-shaped core portion 110 spirally wound around the axis of the core rod portion 110. , and a repellent part 120 having a protrusion 122 projecting in the outer circumferential direction of a circle centered on the axis.

According to the nest prevention tool 100 according to the embodiment of the present invention, the worker 400 can move the steel structure beam 309 without approaching the live part or moving from the position of the post 310 that supports the steel structure beam 309. The nest prevention device 100 can be installed on the steel beam 309 by pushing out the core rod portion 110 from one end in the axial direction along the extending direction.

This allows the worker 400 to install the nest prevention device 100 on the steel beam 309 while remaining in a safe position without causing a power outage such as a busbar power outage. Therefore, since the worker does not have to move from one work place to another, the risk of falling due to slipping or the like while moving can be minimized. As a result, it is possible to both ensure the safety of the worker 400 and improve workability during the installation work, and to prevent birds from flying in and nesting.

Moreover, according to the nest prevention device 100 of the embodiment of the present invention, by screwing the core rod member 111 while rotating it around the axis, the steel materials constituting the steel structure beam 309 and the post 310 and the iron The core rod member 111 can be pushed out into the steel structure beam 309 while avoiding unevenness at the connection position between the structure beam 309 and the post 310. Thereby, even if the steel beam 309 has irregularities, the nest prevention device 100 can be reliably installed, and the flying of birds and nesting can be reliably prevented.

Further, according to the nest prevention device 100 according to the embodiment of the present invention, since the nest prevention device 100 itself does not have a movable part, the movability of the movable part may decrease due to deterioration over time. No functional decline occurs. As a result, a reliable nest prevention effect can be maintained over a long period of time, and, for example, when the nest prevention device 100 once installed is no longer needed, it can be removed and reused at another location.

Further, the nest prevention device 100 according to the embodiment of the present invention is characterized in that the repellent portion 120 is elastically deformable along the axial direction.

According to the nest prevention device 100 of the embodiment of the present invention, the repellent portion 120 is elastically deformed according to the unevenness at the installation position, such as the connection portion between the post 310 that supports the steel beam 309 and the steel beam 309. be able to. Thereby, the rod-shaped core rod portion 110 can be prevented from being lifted from the installation position, and the nest prevention tool 100 can be reliably installed on the steel beam 309.

Further, the nest prevention device 100 according to the embodiment of the present invention is characterized in that the core rod portion 110 has a hollow tube shape.

According to the nest prevention device 100 according to the embodiment of the present invention, the weight of the nest prevention device 100 can be reduced. As a result, the worker 400 can easily push out the core rod part 110 without moving from the position of the post 310 that supports the steel beam 309. It is possible to reduce the burden. In addition, by reducing the weight of the nest prevention device 100, the nest prevention device 100 can be easily handled and work efficiency can be improved.

Further, the nest prevention device 100 according to the embodiment of the present invention is characterized in that the core rod portion 110 is provided with a through hole 112 that penetrates the tubular side wall along the thickness direction of the side wall. There is.

According to the nest prevention tool 100 of the embodiment of the present invention, by providing the plurality of through holes 112 on the wall surface of the side wall, the amount of blocking of the through holes 112 is increased compared to an embodiment in which no wall surface through holes 112 are provided on the side wall. The weight of the material can be reduced, and the weight of the core rod portion 110 can be reduced. This makes it possible to facilitate the handling of the nest prevention device 100, reduce the burden on the worker 400 who installs the nest prevention device 100, and improve work efficiency.

Further, the nest prevention device 100 according to the embodiment of the present invention is characterized in that the core rod portion 110 is constituted by a mesh-like sheet member formed into a tubular shape.

According to the nest prevention device 100 according to the embodiment of the present invention, the core rod member 111 is formed of a mesh-like sheet member formed into a tubular shape, so that a thin plate-like sheet member is formed into a tubular shape. Compared to this, it is possible to reduce the weight of the material used to close the gaps provided in the mesh-like sheet, thereby making it possible to reduce the weight of the core rod portion 110. This makes it possible to facilitate the handling of the nest prevention device 100, reduce the burden on the worker 400 who installs the nest prevention device 100, and improve work efficiency.

Further, in the nest prevention device 100 according to the embodiment of the present invention, the core rod portion 110 is constituted by a plurality of core rod members 111 each having a rod shape, and the end portion of each core rod member 111 in the length direction It is characterized in that it is provided with a connecting mechanism 200 that connects the core rod members 111 to each other, and is configured by connecting the plurality of core rod members 111 in the length direction by the connecting mechanism 200.

According to the nest prevention device 100 of the embodiment of the present invention, by connecting the number of core rod members 111 in the length direction according to the length of the steel beam 309 on which the nest prevention device 100 is installed. Regardless of the length of the steel beam 309 to which the nest prevention device 100 is installed, the steel beam 309 can be installed without approaching live parts or moving from the position of the post 310 that supports the steel beam 309. The nest prevention device 100 can be installed against the nest.

Thereby, the nest prevention device 100 can be installed along the length direction of the steel beam 309, from the post 310 where work can be done safely to the post 310 on the opposite side. Further, the nest prevention device 100 can be installed even inside the steel beam 309, which has a fairly structured structure and cannot be installed from above. Thereby, it is possible to both ensure the safety of the worker 400 and improve workability during installation work, and to prevent birds from flying in and nesting.

Further, in the nest prevention device 100 according to the embodiment of the present invention, the coupling mechanism 200 is provided in the recess 201 provided at the end of one core rod member 111a and the end of the other core rod member 111b. It is characterized by being configured with a convex portion 202.

According to the nest prevention tool 100 of the embodiment of the present invention, the core rod members 111 are connected to each other by fitting the recess 201 and the protrusion 202, so that the core rod members 111 can be separated during or after installation. This can definitely be prevented. Thereby, the worker 400 can install the nesting preventive device 100 on the steel beam 309 without worrying that the core rod part 110 connecting the plurality of core rod members 111 will disassemble. .

Further, in the nest prevention device 100 according to the embodiment of the present invention, the recess 201 is provided with a female screw 203, and the convex portion 202 is provided with a male screw 204 that screws into the female screw 203. It is a feature.

According to the nest prevention device 100 of the embodiment of the present invention, by connecting the core rod members 111 by fitting the concave portion 201 and the convex portion 202 and screwing the male screw 204 and the female screw 203, Separation of the core rod member 111 during or after installation can be more reliably prevented. Thereby, the worker 400 can install the nesting preventive device 100 on the steel beam 309 without worrying that the core rod part 110 connecting the plurality of core rod members 111 will disassemble. .

The direction of the female thread 203 and the male thread 204 is such that when screwing the core rod member 111 around its axis, the screws tighten as the core rod member 111 rotates in the screwing (propulsion) direction. It is preferable that the Thereby, when installing the nest prevention tool 100, the connection by the connection mechanism 200 can be reliably performed by screwing the core rod member 111.

Further, in the nest prevention device 100 according to the embodiment of the present invention, the coupling mechanism 200 further includes a through-hole that passes through the recess 201 and the projection 202 in a state where the recess 201 and the projection 202 are fitted. and a pin-shaped member inserted into the through hole.

According to such a nest prevention device 100, the core rod members 111 connected by fitting the concave portion 201 and the convex portion 202 can be penetrated by a pin-shaped member such as a split pin, thereby preventing nesting during installation work. Also, separation of the core rod member 111 after installation can be more reliably prevented. Thereby, the worker 400 can install the nesting preventive device 100 on the steel beam 309 without worrying that the core rod part 110 connecting the plurality of core rod members 111 will disassemble. .

Further, in the nest prevention device 100 according to the embodiment of the present invention, the coupling mechanism 200 is provided with a female screw 203 provided at the end of one core rod member 111a and a female thread 203 provided at the end of the other core rod member 111b. and a male screw 204 that is screwed into the female screw 203. Specifically, the coupling mechanism 200 is configured by attaching a member with a screw hole to the end of one core rod member 111a, and fixing the head of a bolt to the end of the other core rod member 111b by welding or the like. You may.

According to such a nest prevention device 100, by connecting the core rod members 111 with each other by screwing the female screw 203 and the male screw 204, it is possible to ensure that the core rod members 111 are separated during or after the installation work. can be prevented. Thereby, the worker 400 can install the nesting preventive device 100 on the steel beam 309 without worrying that the core rod part 110 connecting the plurality of core rod members 111 will disassemble. .

Moreover, the installation method of the nest prevention device 100 according to the embodiment of the present invention includes a core rod portion 110 having a rod shape and a band shape spirally wound around the axis of the core rod portion 110. , and a repellent part 120 having a protrusion 122 that protrudes in the outer circumferential direction of a circle centered on the axis. It is characterized in that it is installed on the installation target member by pushing it out along the extending direction of the installation target member.

According to the method for installing the nest prevention device 100 according to the embodiment of the present invention, the worker 400 can install the ironwork without approaching the live part or moving from the position of the post 310 that supports the steelwork beam 309. A nest prevention device 100 can be installed on the structural beam 309. Thereby, it is possible to both ensure the safety of the worker 400 and improve workability during installation work, and to prevent birds from flying in and nesting.

As described above, the nesting preventive device and the method of installing the nesting preventive device according to the present invention are useful as the nesting preventive device and the method of installing the nesting preventive device to prevent birds from nesting in electrical equipment, and are particularly useful in the case of special high voltage, etc. It is suitable for a nest prevention device and a method for installing a nest prevention device to prevent birds from nesting on a steel beam close to a live part.

100 Nest prevention device 110 Core rod portion 111, 111a, 111b Core rod member 112 Through hole 120 Repellent portion 121 Main body portion 122 Projection 200 Connection mechanism 201 Recessed portion 202 Convex portion 203 Female screw 204 Male screw 308 Outdoor steel structure 309 Steel structure beam

Claims (10)

A method for installing a nest prevention device on a steel beam in an outdoor steel structure of electrical equipment, the method comprising:
Each core rod member is constituted by a plurality of rod-shaped core members, and includes a connecting mechanism provided at the end of each of the core rod members in the length direction to connect the core rod members, and by the connecting mechanism, A core rod part formed by connecting a plurality of the core rod members in the length direction, and a band shape spirally wound around the axis of the core rod part, with the axis centered on the core rod part. a repellent part having a protrusion protruding toward the outer periphery of a circle; The pole is raised to a position suitable for the installation work, and one of the plurality of core rod members (hereinafter referred to as the "first core rod member") is aligned with the axis of the first core rod member. Extruding from one end side in the core direction along the extending direction of the steel beam ,
At the time when the first core rod member is pushed out until the other end of the first core rod member approaches one end side of the steel beam , a core rod member other than the first core rod member ( Connecting one end (hereinafter referred to as "second core rod member") to the other end of the first core rod member,
By pushing out the second core member connected to the first core member from one end of the steel beam toward the other end along the extending direction of the steel beam , installing a nest prevention device on the steel beam ;
A method for installing a nesting prevention device characterized by the following. At the time when the first core rod member and the second core rod member are pushed out until the other end of the second core rod member approaches one end side of the steel beam , the first core rod member and connecting one end of a core rod member different from the second core rod member (hereinafter referred to as "third core rod member") to the other end of the second core rod member,
The third core rod member connected to the first core rod member and the second core rod member is moved from one end of the steel beam to the other end along the extending direction of the steel beam . installing the nest prevention device on the steel beam by pushing it out toward the side;
The method for installing a nest prevention device according to claim 1. The method for installing a nest prevention device according to claim 1 or 2, wherein the repellent portion is elastically deformable along the axial direction. The method for installing a nest prevention device according to any one of claims 1 to 3, wherein the core rod portion has a hollow tube shape. 5. The method for installing a nest prevention device according to claim 4, wherein the core rod portion includes a through hole that penetrates a tubular side wall along the thickness direction of the side wall. 5. The method for installing a nesting preventive device according to claim 4, wherein the core rod portion is constituted by a mesh-like sheet member formed into a tubular shape. Claim: wherein the coupling mechanism is configured by a recess provided at an end of one of the core rod members and a protrusion provided at an end of the other core rod member. A method for installing a nest prevention device according to any one of 1 to 6. 8. The method for installing a nest prevention tool according to claim 7, wherein the recess is provided with a female screw, and the convex portion is provided with a male screw that is screwed into the female screw. The coupling mechanism further includes a through hole that passes through the recess and the projection in a state where the recess and the projection are fitted together, and a pin-like member that is inserted into the through hole. The method for installing a nest prevention device according to claim 7. The coupling mechanism includes a female screw provided at an end of one of the core rod members, and a male screw provided at an end of the other core rod member and screwed into the female screw. The method for installing a nest prevention device according to any one of claims 1 to 6, characterized in that:

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