JP2020089321A - Nest building prevention tool and method of installing the same - Google Patents

Abstract

To prevent birds from coming flying and building a nest while making security of operator safety and improvement of workability compatible in the installation operation.SOLUTION: A nest building prevention tool 100 is structured which has a core bar part that is constituted by connecting a plurality of rod-shaped core bar members 111, and has an evasion part that has a belt shape spirally wound around the shaft center of the core bar part and that has a projection protruding in the outer peripheral direction of a circle around the shaft center. As a result, an operator 400 can install a nest building prevention tool 100 on a steel beam 309, by thrusting the core bar part from one end side in the shaft center direction, along the extension direction of the steel beam 309, without approaching a charging part or without moving from the position of a post 310 supporting the steel beam 309.SELECTED DRAWING: Figure 6

Description

The present invention relates to a nesting prevention tool for preventing nesting of birds in an electric facility and a method for installing the nesting prevention tool.

Nesting prevention tools are attached to various electrical equipment such as power receiving and transforming equipment, power generation equipment, premises line equipment, and lightning protection equipment for the purpose of suppressing the arrival and nesting of birds. Nesting prevention tools prevent birds from flying or nesting by providing a physical obstacle around the charging part in such various electrical equipment, which may cause a power failure accident due to birds flying or nesting. Suppress.

A conventional nesting prevention tool needs to be close to the charging part in the work of mounting the charging part in such various electric equipment. Therefore, in the conventional installation work of the nesting prevention tool, in order to avoid an electric shock of the worker due to the approach to the charging section, it is necessary to turn off the charging section.

As a related technique, specifically, for example, a nesting of a bird at a position near the charging part of the structure in a structure in which an electrically charging part such as a steel structure in a substation yard or a transmission line tower is close In order to prevent, there is a rope that passes vertically between the plurality of reinforcing members in the reinforcing portion of the structure and hangs vertically downward, and from a cylindrical pipe member through which the rope can be inserted, obliquely downward to its periphery. There has been a technique relating to a nest-preventing device and a nest removing method in a structure configured by radially projecting a plurality of branch members (for example, refer to Patent Document 1 below).

Further, as a related technique, specifically, for example, conventionally, for example, a tubular main body formed in a tubular shape, a split portion formed along the axial direction of the tubular main body, and both sides sandwiching the split portion are provided. A main body member having a rail portion provided on the mounting base portion, a mounting base portion 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 portion. There has been a technology relating to a bird damage preventive tool including a mounting member having a (see, for example, Patent Document 2 below).

In addition, as a related technique, specifically, for example, conventionally, a plurality of bird damage prevention members arranged at predetermined intervals, and a pair of long members on which these bird damage prevention members are hooked are provided. There has been a technique relating to a bird damage prevention tool that is attached to an overhead wire by inserting the overhead wire into each insertion hole of the bird damage prevention member (for example, refer to Patent Document 3 below).

JP2012-125175A Japanese Patent No. 6100636 Japanese Patent No. 5602080

However, the conventional technique described in the above-mentioned Patent Document 1 is to prevent nesting by brushing off twigs and the like which are constituent elements of the nest with a rope, and to prevent flying of birds and nesting itself. There was a problem that it was difficult.

In addition, since the bird damage prevention devices according to the related art described in Patent Document 2 and Patent Document 3 described above are attached by covering the wires, they cannot be attached to an extra-high voltage electric circuit. Specifically, the bird damage prevention devices according to the related art described in the above-mentioned Patent Documents 2 and 3 are, for example, steel beam beams installed in the premises of power plants and substations. There is a problem that it is difficult to attach to a member connected to another member such as a post (post) that supports the steel structure beam, and it is difficult to prevent birds from flying and nesting.

This invention solves the above-mentioned problems of the prior art, and at the same time secures the safety of the worker at the time of installation work and improves the workability at the same time, and can prevent the birds from flying and nesting. The purpose of the present invention is to provide a method for installing a prevention tool and a nesting prevention tool.

In order to solve the above-mentioned problems and achieve the object, a nesting prevention tool according to the present invention has a core rod portion having a rod shape, and a strip shape spirally wound around the axis of the core rod portion. None, and a repelling portion having a protrusion protruding in the outer peripheral direction of a circle centered on the axis.

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

Further, the nesting prevention tool according to the present invention is characterized in that the core rod portion is provided with a through hole that penetrates the tubular side wall along the thickness direction of the side wall.

Further, the nesting prevention tool according to the present invention is characterized in that the core rod portion is formed of a mesh-shaped sheet member formed into a tubular shape.

Further, in the nesting prevention tool 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 each core rod member has a longitudinal end portion. It is characterized in that it is provided with a connecting mechanism for connecting the core rod members to each other, and is configured by connecting the plurality of core rod members in the longitudinal direction by the connecting mechanism.

Further, in the nesting prevention tool according to the present invention, in the above invention, the connecting mechanism is provided at a recess provided at one end of the core rod member and at another end of the core rod member. And a convex portion.

Further, the nesting prevention tool according to the present invention is characterized in that, in the above invention, the concave portion is provided with a female screw, and the convex portion is provided with a male screw to be screwed into the female screw. ..

Further, the nesting prevention tool according to the present invention, in the above invention, the connecting mechanism further has a through hole penetrating the concave portion and the convex portion in a state where the concave portion and the convex portion are fitted together, A pin-shaped member inserted into the through hole.

Further, in the nesting prevention tool according to the present invention, in the above invention, the connecting mechanism is provided at an internal thread provided at one end of the core rod member and at another end of the core rod member. And a male screw that is screwed into the female screw.

Further, the method for installing a nesting prevention tool according to the present invention comprises a core rod portion having a rod shape and a strip shape spirally wound around the axis of the core rod portion, with the axis centered around the axis. A repellent portion having a protrusion protruding in the outer circumferential direction of the circle, and the core rod portion in a nesting prevention tool having the It is characterized in that it is installed on the installation target member by pushing it out.

According to the nesting prevention tool and the method of installing the nesting prevention tool according to the present invention, it is possible to prevent the arrival of birds and nesting of birds by ensuring both the safety of the worker during the installation work and the improvement of workability. It is possible to provide a nesting prevention tool that can be used and a method for installing the nesting prevention tool.

It is explanatory drawing (the 1) which shows the structure of the nesting prevention tool of embodiment concerning this invention. It is explanatory drawing (the 2) which shows the structure of the nesting prevention tool of embodiment concerning this invention. It is explanatory drawing which shows an example of the electric equipment installed in a power station. It is explanatory drawing (the 1) which shows the installation operation of the nesting prevention implement 100 of embodiment concerning this invention. It is explanatory drawing (the 2) which shows the installation work of the nesting prevention implement 100 of embodiment concerning this invention. It is explanatory drawing (the 3) which shows the installation operation of the nesting prevention implement 100 of embodiment concerning this invention. It is explanatory drawing (the 4) which shows the installation operation of the nesting prevention implement 100 of embodiment concerning this invention.

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a nesting prevention tool and a method for installing a nesting prevention tool according to the present invention will be described below in detail with reference to the accompanying drawings.

(Structure of nesting prevention equipment)
First, the structure of a nesting prevention tool according to an embodiment of the present invention will be described. 1 and 2 are explanatory views showing the configuration of a nesting prevention tool according to an embodiment of the present invention. 1 and 2, a nesting 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 having a rod shape along the length direction. Each core rod member 111 that constitutes the core rod portion 110 has a hollow tubular shape. As a result, the core rod portion 110 has a hollow cylindrical shape. Specifically, the core rod member 111 has, for example, a cylindrical shape.

The core rod portion 110 having a tubular 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 over the entire wall surface. As described above, by providing the plurality of through holes 112 in the wall surface of the side wall, the weight of the material for closing the through hole is reduced as compared with the mode in which the wall surface through hole 112 of the side wall is not provided, and the core rod portion 110 is provided. The weight can be reduced.

The core rod portion 110 may be configured by a mesh-shaped sheet member formed into a tubular shape. Also by this, the weight of the material for filling the gap provided in the mesh-shaped sheet can be reduced and the weight of the core rod portion 110 can be reduced as compared with the mode in which the thin plate-shaped sheet member is formed into a tubular shape. it can.

The core rod member 111 is preferably formed of a material having excellent insulating properties. By forming the core rod member 111 with a material having excellent insulating properties, electricity is transmitted through the core rod member 111 (core rod portion 110) even when the nesting prevention device 100 is installed near the charging portion. It is possible to prevent such a situation and ensure the safety of the worker who is involved in the installation work of the nesting prevention device 100.

Further, the core rod member 111 is preferably formed of a material having excellent weather resistance. By forming the core rod member 111 with a material having excellent weather resistance, deterioration of the core rod member 111 over time can be suppressed, and the stability of the nesting prevention device 100 can be secured for a long period of time.

Specifically, the core rod member 111 is preferably formed using, for example, a polycarbonate resin, a polyethylene resin, or the like, which has excellent weather resistance and insulation properties. Further, specifically, the core rod member 111 may be formed using, for example, a phenol resin or an 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 simulating a snake that birds repel, or a color (yellow or the like) that birds such as crows repel or cannot recognize.

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

Such a connecting mechanism 200 includes a recess 201 provided on one end side of one core rod member 111a of the two core rod members 111 arranged along the length direction of each core rod member 111, The two core rod members 111 are connected by fitting with 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 concave portion 201 and the convex portion 202, it is possible to prevent the two core rod members 111 connected by the connecting mechanism 200 from being separated.

In the coupling mechanism 200, the concave portion 201 is provided with a female screw 203, and the convex portion 202 is provided with a male screw 204 that is screwed into the female screw 203. The female screw 203 provided in the concave portion 201 and the male screw 204 provided in the convex portion 202 have the same pitch, that is, the dimension between the ridges (or valleys) of the threads.

Such a connecting mechanism 200 has a recess 201 provided on one end side of one core rod member 111a of the two core rod members 111 arranged along the length direction of each core rod member 111. The convex portion 202 provided on the other end side of the other core rod member 111b is screwed in, and the concave portion 201 and the convex portion 202 are fitted to each other while the female screw 203 and the male screw 204 are screwed together, so that 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 is prevented during or after the nesting prevention device 100 is installed. It is possible to more reliably prevent the rod member 111 from separating.

The repellent portion 120 includes a body portion 121 having a strip shape. A plurality of protrusions 122 that project in a direction away from the one surface side are provided on the one surface side of the main body 121. The protrusion 122 has a thin shape like a needle, for example. The repellent portion 120 is spirally wound around the axis of the core rod portion 110. As a result, the protrusion 122 projects in the outer peripheral direction of a circle centered on the axis of the core rod 110.

In addition, the repellent portion 120 is preferably formed of a material having excellent insulating properties. By forming the repellent portion 120 of a material having excellent insulation properties, even when the nesting prevention device 100 is installed near the charging portion, it is possible to prevent electricity from being transmitted through the repellent portion 120 and prevent nesting. It is possible to ensure the safety of the worker involved in the installation work of the tool 100.

In addition, the repellent portion 120 is preferably formed of a material having excellent weather resistance. By forming the repellent portion 120 with a material having excellent weather resistance, deterioration of the repellent portion 120 over time can be suppressed, and the bird repellent effect can be stably maintained for a long period of time.

The repellent portion 120 is preferably formed using a material having flexibility or flexibility. By forming the repellent portion 120 using a material having flexibility or flexibility, when a bird flies into the nesting prevention device 100, the repellent portion 120 can be appropriately deformed according to the weight of the bird. it can. As a result, it is possible to prevent the birds that fly into the nesting prevention device 100 from being damaged and prevent nesting.

Further, the repellent portion 120 is preferably formed using a material having elasticity. By forming the repellent portion 120 using a material having elasticity, the nest repellent device is not deformed without deforming the repellent portion 120 when small birds fly in or when a relatively lightweight object such as nest material is placed. 100 birds can be repelled and nesting can be reliably prevented.

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

The repellent portion 120 is a separate body from the core rod portion 110. The repellent portion 120 is provided for each core rod member 111 independently of the length dimension of the core rod member 111 in the axial direction. In this case, in the repellent portion 120, the length dimension in the direction orthogonal to the rotation surface due to the spiral winding is the same as the length dimension in the axial direction of the core rod member 111.

By providing the repellent portion 120 for each core rod member 111, the operator can adjust the length to the length required for the core rod portion 110, such as the length of the steel structure beam to which the nesting prevention device 100 is to be installed. By simply connecting the core rod members 111 with each other, the repellent portion 120 can be arranged according to the entire length of the connected core rod members 111. As a result, it is possible to reduce the burden on the operator for installing the nesting prevention device 100 and improve the work efficiency.

Since the repellent portion 120 is a separate body from the core rod portion 110, it is elastically deformed along the axial direction of the core rod portion 110, that is, the direction orthogonal to the rotation surface due to being spirally wound. can do. The repellent portion 120, which is spirally wound around the axis of the core rod 110, absorbs the external force by contracting when the external force is applied. Further, when the repellent portion 120 is released from the applied external force, the repellent portion 120 returns to its original shape by its own elastic force.

(Installation work of nesting prevention tool 100)
Next, an installation operation of the nesting prevention tool 100 according to the embodiment of the present invention will be described. The nest-preventing tool 100 according to the embodiment of the present invention is installed in, for example, an electric facility provided in the premises of a power plant or a substation. FIG. 3 is an explanatory diagram showing an example of electric equipment installed in a power plant. In FIG. 3, various electrical equipments 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 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 a load current in a power circuit or a power device, and cooperates with a protective relay to cut off a fault current such as a short-circuit fault current when power transmission, power transmission stop, or an accident occurs. Protect the equipment to prevent the accident from spreading to the upstream side.

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, the electric wire, or the like. The instrument transformer 304 and the lightning arrester 305 that cut off the electrical continuity reduce the abnormal voltage due to lightning to a voltage lower than the dielectric strength of the electric device, so that the electric device installed at the substation is abnormal voltage due to lightning. Protect from.

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

The outdoor iron frame 308 is composed of an iron frame beam 309 formed of shaped steel or the like, a post (support) 310 for supporting the iron frame beam 309, and the like. The steel structure beam 309 and the post 310 have a structure structure in which, for example, shaped steel is assembled into a truss structure or the like. Steel members forming the steel structure beam 309 and the post 310 are connected to each other, and the steel structure beam 309 and the post 310 are connected to each other using bolts and nuts.

A high voltage is applied to each electric device or electric wire 306 installed in a substation or the like, which may cause electric shock when contacted or approached during normal power transmission and distribution. That is, each electric device and the electric wire 306 in the normal time when power transmission and distribution are performed are in a charged state. The outdoor iron structure 308 is installed near an electric device in a charged state or supports the electric wire 306 in a charged state.

The nesting prevention device 100 according to the embodiment of the present invention is installed, for example, on the steel structure beam 309 of the outdoor steel structure 308. In the conventional nesting prevention device 100, during the work of attaching the steel structure beam to the steel structure beam, it was necessary to cut the power of the bus bar in order to ensure the safety of the worker. Then, the power outage of the bus bar was sometimes wide.

On the other hand, the power outage of the substation is restricted depending on the season and the time of day, and there is a high possibility that the power outage will cause a supply failure. Therefore, the power outage must be performed in order to install the nesting prevention device 100. There was a situation that was not easy. If the power failure is difficult, the nesting prevention tool 100 must be installed while keeping a distance equal to or more than the approach limit distance from the charging part in accordance with the occupational safety and health regulations. Specifically, the approach limit distance is, for example, 60 cm or more when the voltage is 66 kV.

However, in an unstable high place where the scaffolding is restricted, performing the installation work of the nesting prevention device 100 while maintaining such an approach limit distance poses both a risk of falling from a high place and an electric shock. Accompany. Although the conventional nesting prevention device 100 exerts a nesting prevention effect in each installed state, the safety of the installation work is not taken into consideration. Therefore, a nesting prevention device is provided for a place where power failure is difficult. Installation of 100 was difficult in some cases.

On the other hand, in the nesting prevention device 100 according to the embodiment of the present invention, the safety of the worker involved in the installation work is sufficiently considered. In particular, the nesting prevention device 100 according to the embodiment of the present invention can install a nesting prevention device in the steel structure beam 309 without embarking on the steel structure beam 309, and reliably prevent nesting in the steel structure beam 309. You can

4 to 7 are explanatory views showing the installation work of the nesting prevention device 100 according to the embodiment of the present invention. When installing the nesting prevention tool 100, the worker 400 holds the nesting prevention tool 100 and climbs to the post 310 that supports the steel structure beam 309 on which the nesting prevention tool 100 is installed. The worker 400 goes up to a position suitable for the installation work of the nesting prevention tool 100. Specifically, the worker 400, for example, moves up to a position where the connection position between the steel structure beam 309, on which the nesting prevention device 100 is installed, and the post 310 that is moving up can be reached.

At this time, the worker 400, when connected, has the number of core rods necessary to configure the core rod portion 110 having a length corresponding to the length of the steel structure beam 309 on which the nesting prevention device 100 is installed. The member 111 is held and the pillar 310 is raised. For example, as shown in FIG. 4, a plurality of core rod members 111 can be carried together by putting them in a tool bag 401 or the like that can be carried (carried) by an operator 400.

The plurality of core rod members 111 are transported in a separated state. Accordingly, the core rod member 111 is not bulky, and the work load for transporting the core rod member 111 can be reduced. In addition, since the plurality of core rod members 111 each have a hollow shape, the weight of the core rod member 111 can be reduced, and this can also reduce the burden on the operator 400 when transporting the core rod member 111. ..

When the operator raises the pillar to a position suitable for installing the nesting prevention device 100, the worker 400 moves the first core rod member 111 (see reference numeral 501 in FIG. 5) to the steel structure beam 309 as shown in FIG. Along the extending direction of the iron frame beam 309 from one end side to the other end side, the first core rod member 111 is pushed out from one end side in the axial 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 the one end side of the steel structure beam 309, the second core rod member 111 (reference numeral in FIG. 6). (See 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 attached to the steel frame beam 309 along the extending direction of the steel frame beam 309. 309 is pushed out from one end side toward the other end side (see arrow 602 in FIG. 6). The worker 400 uses a new core rod member 111 (for example, the second core rod member 111 (601) on the core rod member 111 (for example, the first core rod member 111 (501)) on the operator's 400 hand side. )) while pushing the core rod member 111 from one end side to the other end side of the steel structure beam 309, the work for the length of the steel structure beam 309 is repeated. Thereby, as shown in FIG. 7, the nesting prevention tool 100 can be installed from one end side to the other end side of the steel structure beam 309.

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

Further, in the work of pushing out the core rod member 111, the flexibility or elasticity of the material forming the projection 122 may be utilized. Specifically, for example, when the core rod member 111 is pushed out, when the steel members forming the steel structure beam 309 and the post 310 and bumps and dips at the connecting position of the steel structure beam 309 and the post 310 are hit, The protrusions 122 may be deformed to avoid these irregularities.

Thus, by connecting a plurality of members, it is possible to prevent the core rod member 111 that pushes out to a position away from the operator 400's hand, from being caught by unevenness or the like at the connection position of the steel structure beam 309 and the post 310. it can. And thereby, the worker 400 installs the nesting prevention tool 100 with respect to the steel structure beam 309, without approaching a charging part or moving from the position of the post 310 which supports the steel structure beam 309. You can

Then, the nesting prevention tool 100 installed on the steel structure beam 309 is fixed to the steel structure beam 309 using a binding band or the like. Thereby, it is possible to reliably prevent the nesting prevention tool 100 from falling off after installation. At this time, the binding band is fixed to the steel material forming the steel structure beam 309, for example, in a state of being passed through an arbitrary through hole 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 nesting prevention device 100 to the steel structure beam 309. In this case, the binding band is fixed to the steel material forming the steel structure beam 309 with the binding band being passed through a dedicated through hole or ring. This also enables the nesting prevention device 100 to be fixed to the steel structure beam 309.

The nesting prevention device 100 installed in one steel structure beam 309 is not limited to one. A plurality of nesting prevention devices 100 may be installed in one steel structure beam 309. Also in this case, the core rod member 111 is screwed while rotating around the axis to avoid the protrusion 122 in the nest-preventing tool 100 installed earlier, and is installed first by the nest-preventing tool 100 installed later. A plurality of nesting prevention devices 100 can be installed in one steel structure beam 309 without pushing out the nesting prevention device 100.

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

The coupling mechanism according to the present invention is, for example, a recess provided on one end side of one core rod member 111a 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.

Further, in the connecting mechanism for connecting the two core rod members 111 by fitting the recesses and the protrusions in this way, the recesses and the protrusions are formed in one core rod member 111a and the other core rod member 111b. By inserting a pin-shaped member (not shown) into the through hole, a through hole (not shown) penetrating the concave portion and the convex portion is provided in a state where The two core rod members 111 may be fixed so as not to be separated. Thereby, the two core rod members 111 can be easily connected only by fitting the concave portion and the convex portion, and the connected two core rod members 111 are installed in the nesting prevention device 100. It can be securely fixed so as not to separate inside.

In this case, the pin-shaped member can be realized by a split pin, for example. The split pin is formed by folding a wire having a semicircular cross section into two with the flat surface of the semicircle facing inward. When the split pin is used, when the two core rod members 111 are connected, the split pin penetrating the through hole penetrating the concave portion and the convex portion may be bent so as to widen the crack. This makes it possible to prevent the split pin from coming off and to reliably fix the two connected core rod members 111 so as not to separate during the installation work of the nesting prevention device 100.

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

As described above, the nesting prevention device 100 according to the embodiment of the present invention has 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 portion 120 having a protrusion 122 protruding in the outer circumferential direction of a circle centered on the axis.

According to the nesting prevention device 100 of the embodiment according to the present invention, the worker 400 does not approach the charging part or move from the position of the post 310 supporting the steel structure beam 309, and the steel structure beam 309. The nesting prevention device 100 can be installed on the steel structure beam 309 by pushing out the core rod 110 from one end side in the axial direction along the extending direction of the.

Accordingly, the worker 400 can install the nesting prevention device 100 on the steel structure beam 309 in a state where the worker 400 remains in a safe position without a power failure such as a bus failure. For this reason, since the work place is not moved, it is possible to minimize the risk of a fall due to stepping off the foot during movement. This makes it possible to ensure both the safety of the worker 400 during the installation work and the improvement of workability, and prevent the birds from flying and nesting.

Further, according to the nest-preventing tool 100 of the embodiment according to the present invention, the core rod member 111 is screwed while being rotated about the axis, so that the steel members constituting the steel structure beam 309 and the post 310 are made of steel, and The core rod member 111 can be pushed out into the iron structure beam 309 while avoiding unevenness at the connection position between the structure beam 309 and the post 310. Thereby, even if the steel structure beam 309 has irregularities, the nesting prevention device 100 can be reliably installed, and the arrival of birds and nesting can be surely prevented.

Further, according to the nest-preventing tool 100 of the embodiment according to the present invention, since the nest-preventing tool 100 itself does not have a movable part, the mobility of the movable part is deteriorated due to deterioration over time. Does not cause functional deterioration. As a result, while maintaining a reliable nesting prevention effect for a long period of time, when the nesting prevention tool 100 once installed is no longer needed, it can be removed and reused in another place.

Further, the nesting prevention tool 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 nesting prevention device 100 of the embodiment according to the present invention, the repellent portion 120 is elastically deformed according to the unevenness at the installation position, such as the connecting portion between the post 310 supporting the steel structure beam 309 and the steel structure beam 309. be able to. As a result, the rod-shaped core rod portion 110 can be prevented from rising from the installation position, and the nesting prevention device 100 can be reliably installed on the steel structure beam 309.

Further, the nesting 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 nesting prevention tool 100 of the embodiment according to the present invention, the weight of the nesting prevention tool 100 can be reduced. As a result, the worker 400 can easily push out the core rod 110 without moving from the position of the post 310 supporting the steel structure beam 309, so that the worker 400 performing the installation work of the nest-preventing tool 100 can perform the work. The burden can be reduced. Further, by reducing the weight of the nesting prevention tool 100, it is possible to facilitate the handling of the nesting prevention tool 100 and improve the work efficiency.

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

According to the nesting prevention device 100 of the embodiment according to the present invention, by providing the plurality of through holes 112 in the wall surface of the side wall, the through hole 112 is blocked as compared with the mode in which the wall surface through hole 112 of the side wall is not provided. The weight of the material can be reduced, and the weight of the core rod 110 can be reduced. As a result, it is possible to facilitate the handling of the nesting prevention device 100, reduce the burden on the operator 400 who performs the installation work of the nesting prevention device 100, and improve the work efficiency.

Further, the nesting 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-shaped sheet member formed into a tubular shape.

According to the nest-preventing device 100 of the embodiment according to the present invention, the thin rod-shaped sheet member is formed into a tubular shape by configuring the core rod member 111 with the mesh-shaped sheet member formed into a tubular shape. Compared with the above, the weight of the material for closing the gap provided in the mesh-shaped sheet can be reduced, and the weight of the core rod portion 110 can be reduced. As a result, it is possible to facilitate the handling of the nesting prevention device 100, reduce the burden on the operator 400 who performs the installation work of the nesting prevention device 100, and improve the work efficiency.

Further, in the nesting prevention device 100 according to the embodiment of the present invention, the core rod portion 110 is composed of a plurality of core rod members 111 each having a rod shape, and each core rod member 111 has a longitudinal end portion. And a connecting mechanism 200 for connecting the core rod members 111 to each other. The connecting mechanism 200 connects a plurality of core rod members 111 in the longitudinal direction.

According to the nest-preventing tool 100 of the embodiment according to the present invention, by connecting the number of core rod members 111 in the length direction according to the length of the steel structure beam 309 to which the nest-preventing tool 100 is to be installed, Regardless of the length of the steel structure beam 309 on which the nesting prevention device 100 is installed, the steel structure beam 309 does not approach the charging part or move from the position of the post 310 supporting the steel structure beam 309. The nesting prevention device 100 can be installed for the.

Thereby, the nesting prevention tool 100 can be installed over the entire length from the post 310 where work can be safely performed to the post 310 on the opposite side along the length direction of the steel structure beam 309. Further, the nesting prevention tool 100 can be installed even inside the steel structure beam 309 having a complex structure in which the nesting prevention tool 100 cannot be installed from above. This makes it possible to ensure both the safety of the worker 400 during installation work and the improvement of workability, and prevent birds from flying and nesting.

Further, in the nesting prevention device 100 according to the embodiment of the present invention, the connecting mechanism 200 is provided at the recess 201 provided at the end of the one core rod member 111a and at the end of the other core rod member 111b. And a convex portion 202.

According to the nesting prevention device 100 of the embodiment according to the present invention, the core rod members 111 are separated during or after the installation work by connecting the core rod members 111 by fitting the concave portions 201 and the convex portions 202. Can be reliably prevented. Accordingly, the worker 400 can install the nesting prevention tool 100 on the steel structure beam 309 without concern that the core rod 110 connecting the plurality of core rod members 111 will be disassembled. ..

In the nesting prevention device 100 according to the embodiment of the present invention, the concave portion 201 is provided with the female screw 203, and the convex portion 202 is provided with the male screw 204 which is screwed into the female screw 203. It has a feature.

According to the nesting prevention tool 100 of the embodiment according to 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, It is possible to more reliably prevent the core rod member 111 from being separated during or after the installation work. Accordingly, the worker 400 can install the nesting prevention tool 100 on the steel structure beam 309 without concern that the core rod 110 connecting the plurality of core rod members 111 will be disassembled. ..

The direction of the internal thread 203 and the external thread 204 is such that the core rod member 111 is tightened as the core rod member 111 rotates in the screwing (propulsion) direction when the core rod member 111 is screwed while rotating around the axis. Is preferably provided. Accordingly, when the nesting prevention device 100 is installed, the core rod member 111 can be screwed in to ensure the connection by the connection mechanism 200.

In addition, in the nesting prevention device 100 according to the embodiment of the present invention, the connecting mechanism 200 further penetrates the concave portion 201 and the convex portion 202 while the concave portion 201 and the convex portion 202 are fitted to each other. And a pin-shaped member inserted into the through hole.

According to such nesting prevention tool 100, a pin-shaped member such as a split pin is passed through the core rod members 111 connected by fitting the concave portion 201 and the convex portion 202, so that the installation work is performed. It is possible to more reliably prevent the core rod member 111 from being separated after installation. Accordingly, the worker 400 can install the nesting prevention tool 100 on the steel structure beam 309 without concern that the core rod 110 connecting the plurality of core rod members 111 will be disassembled. ..

Further, in the nesting prevention device 100 according to the embodiment of the present invention, the connecting mechanism 200 is provided at the female screw 203 provided at the end of one core rod member 111a and 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 having 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 nesting prevention device 100, by connecting the mandrel members 111 by screwing the female screw 203 and the male screw 204, it is possible to ensure that the mandrel member 111 is separated during or after the installation work. Can be prevented. Accordingly, the worker 400 can install the nesting prevention tool 100 on the steel structure beam 309 without concern that the core rod 110 connecting the plurality of core rod members 111 will be disassembled. ..

The nesting prevention tool 100 according to the embodiment of the present invention is provided with a core rod portion 110 having a rod shape and a belt shape spirally wound around the axis of the core rod portion 110. The core rod portion 110 in the nest-preventing device 100 including the protrusion 120 that protrudes in the outer circumferential direction of a circle centered on the axis is the one end side in the axis direction of the core rod portion 110. It is characterized in that it is installed on the installation target member by being pushed out along the extending direction of the installation target member.

According to the method of installing the nesting prevention device 100 of the embodiment according to the present invention, the worker 400 does not need to approach the charging part or move from the position of the post 310 supporting the steel structure beam 309. The nesting prevention device 100 can be installed on the construction beam 309. This makes it possible to ensure both the safety of the worker 400 during the installation work and the improvement of workability, and prevent the birds from flying and nesting.

INDUSTRIAL APPLICABILITY As described above, the nesting prevention tool and the method of installing the nesting prevention tool according to the present invention are useful for the method of installing the nesting prevention tool and the nesting prevention tool that prevent nesting of birds in the electric equipment, and particularly, the high pressure and the like. It is suitable for nesting prevention tools to prevent nesting of birds and installation methods of nesting prevention tools for steel structure beams that are close to the charged part.

100 Nesting prevention tool 110 Core bar part 111, 111a, 111b Core bar member 112 Through hole 120 Repellent part 121 Main body part 122 Protrusion 200 Coupling mechanism 201 Recess 202 Convex part 203 Female screw 204 Male screw 308 Outdoor steel structure 309 Steel structure beam

Claims (11)

A rod-shaped core rod part,
A repellent portion having a band shape spirally wound around the axis of the core rod portion, and having a protrusion protruding in the outer circumferential direction of a circle centered on the axis,
A nesting prevention tool characterized by having. The nest-preventing device according to claim 1, wherein the repellent portion is elastically deformable along the axial direction. The nesting prevention tool according to claim 1, wherein the core rod portion has a hollow tubular shape. The nesting prevention tool according to claim 3, wherein the core rod portion has a through hole that penetrates a tubular side wall in a thickness direction of the side wall. The nest-preventing device according to claim 3, wherein the core rod portion is configured by a mesh-shaped sheet member formed into a tubular shape. The core rod portion is
Each is composed of a plurality of rod-shaped core rod members,
A connecting mechanism that is provided at the end of each core rod member in the longitudinal direction and connects the core rod members together,
The nesting prevention tool according to any one of claims 1 to 5, which is configured by connecting a plurality of the core rod members in the length direction by the connecting mechanism. The connection mechanism is configured by a concave portion provided at an end portion of one of the core rod members and a convex portion provided at an end portion of the other core rod member. Nesting prevention tool according to item 6. The nesting prevention tool according to claim 7, wherein the concave portion is provided with a female screw, and the convex portion is provided with a male screw that is screwed into the female screw. The connection mechanism further includes a through hole that penetrates the concave portion and the convex portion in a state where the concave portion and the convex portion are fitted to each other, and a pin-shaped member that is inserted into the through hole. The nest-preventing device according to claim 7, which is characterized in that. The connecting mechanism includes a female screw provided at an end of the one core rod member, and a male screw provided at an end of the other core rod member and screwed into the female screw. The nesting prevention tool according to claim 6, wherein the nesting prevention tool is provided. A repelling portion having a rod-shaped core rod and a protrusion that is in the shape of a band spirally wound around the axis of the core rod and that protrudes in the outer circumferential direction of a circle centered on the axis. And the core rod portion in the nesting prevention tool including
Installed on the installation target member by extruding along the extending direction of the installation target member from one end side in the axial direction of the core rod portion,
A method for installing a nesting prevention device, which is characterized in that

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