JP4852701B2 - Bird nesting nesting equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nesting tool for inducing a bird, especially crow or Pica pica, which has a simple structure and facilitates the formation of a nest in response to the characteristics of the bird to prevent a damage of a power line due to the nesting. <P>SOLUTION: This nesting tool for inducing the bird is characterized by vertically disposing a bar-like main metal shaft in a lower portion and obliquely upward radially projecting at least three bar-like metal branches from the tip of the main shaft to enable the security of a nesting space surrounded with the tip portions of the branches and having a diameter of, for example, 35 to 45 cm. The nesting tool is a means which has a simple structure, effectively induces the nesting actions of the bird to reach the nesting, and is effective as an accident prevent measure for a power line. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to an improvement of an induction nesting device for preventing damage caused by nesting of a power transmission line by birds, particularly crows, magpies and the like.

As detailed in the following non-patent literature, which is the author's book, a power company creates a nest on a steel tower of a transmission line with crows, magpies, etc., and not only a tree branch but also a wire or metal in the nest There are cases where hangers or the like are mixed in, and this causes short-circuiting of the power transmission line to cause a major power outage accident. (Description on pages 65-67)
As a countermeasure against accidents on this power transmission line, there is a proposal to provide a so-called crow return that turns the power transmission line so that the crow is rotated by winding a coil around the power line or passing a rotating tube around the power line. In addition, coexistence with crows has been attempted by placing tegus at places where crows tend to stop, or by providing places where crows can stop or nest (relatively safe parts far from charging parts). (Description on pages 68-69)
As an attempt to coexist with this crow, there is one in which a square terrace-shaped or dish-shaped induction nesting device is arranged and fixed at the inner corner of a steel tower away from the transmission line.
Shoei Sugita, “The Law of Crows and Crows”, published by Soshisha Co., Ltd. December 2, 2002, pages 65-69

Of the above countermeasures against accidents in the conventional power transmission line, it is difficult to specify a target portion to provide a crow return around the power transmission line, which is enormous, increases the equipment cost, and the effect is uncertain.
In addition, providing a square terrace-shaped or dish-shaped induction nesting tool at the inner corner of the steel tower is relatively limited because the installation location is a suitable part of the steel tower. Since the structure is not compatible with the nesting of crows, it is very rare that they actually reach the nesting, and most of the failure cases.
On the other hand, the present invention has a simple structure as a countermeasure against an accident on a power transmission line, but a bird nesting nesting tool such as a crow that easily reaches the nesting in accordance with the characteristics of birds (hereinafter, simply referred to as “guidance nesting tool”). The purpose is to obtain.

to this end,
In the first aspect of the present invention, a metal rod-shaped main shaft is erected on the lower side, and at least three metal rod-shaped branches branch from the top of the main shaft and radiate obliquely upward. The problem was solved by a bird-guided nesting tool that protrudes and is able to secure a nesting space surrounded by the tip of each branch.
In the invention described in claim 2, it is preferable that the bird's guided nesting device described in claim 1 has 4 to 5 branches.
In the invention described in claim 3, it is preferable that the nest space surrounded by the branching tip is 35 cm to 45 cm in diameter. .
In the invention according to claim 4, the branch is divided into a lower partial branch and an upper partial branch, and a joint is interposed in the middle. The joint has a through hole in the axial direction and a slit is formed on the side surface. A screw hole is formed in the lower end portion of the upper partial branch at an interval, the tip of the lower partial branch is fixed to the lower side of the through hole, and the lower end portion of the upper partial branch is set to the upper side. Are inserted so as to be slidable in the vertical direction, and a fixing tool is screwed into the screw hole from the slit to fix the upper partial branch to the main body so that the branch length can be adjusted. It can be set as the bird's induction nesting tool as described in any one of.
In invention of Claim 5, it is set as the bird's induction nesting tool in any one of Claims 1-4 which formed the uneven | corrugated | grooved part and / or the twig-like fine branch on the surface of the branch. it can.
In the invention of claim 6, a substantially polygonal metal block support is placed on the top of the main shaft, and the number of branches in the direction perpendicular to the side peripheral surface from the center of the support is The same narrow groove portion is drilled, and each branch is slidably inserted into each groove portion. One side of the groove portion is a vertical flat surface, and the other side is an inclined flat surface having an upward spreading gradient. The vertical flat surface is located closer to the center, the inclined flat surface is located on the side peripheral surface side, and each branch is movable with the bottom surface of each groove as a fulcrum. The fixing angle can be adjusted by screwing a fixing tool through a screw hole formed in the side peripheral surface at an interval and pressing each branch inserted in each groove in the horizontal and vertical directions. It can be set as the bird's induction nesting tool in any one of Claims 1-5.

  Although the bird nesting tool of the present invention has a simple structure, it effectively induces the nesting behavior of birds and easily reaches the nesting, and is effective for countermeasures against accidents on power transmission lines.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view and a side view of an induction nesting tool according to an example of the present invention.
FIG. 2 is a schematic perspective view showing a state where the induction nesting tool of FIG. 1 is installed on a steel tower.
FIG. 3 is a perspective view of the configuration for adjusting the branch length and the configuration for changing the surface form of the branch added to the guide nesting device of FIG.
4A and 4B are a plan view and a side view of a configuration that is added to the guide nesting tool of FIG. 1 and adjusts the branching inclination angle.
Hereinafter, the vertical direction will be described as the vertical direction in the usage state of the bird's guided nesting device of the present invention.

The simplest and most basic guided nesting tool 1 as an example of the present invention will be described with reference to FIG.
The guided nesting tool 1 is the most suitable for inducing the nesting behavior of crows obtained from the results of investigating and observing a large number of entities nationwide with regard to crow nesting mainly by the present inventor. The explanation will be made for crows.
In the guiding nesting tool 1, a main shaft 2 having a substantially circular rod-shaped cross section is erected in a substantially vertical direction below, and a plurality of substantially circular rod-shaped branches 3 are branched from the top of the main shaft 2 to radiate obliquely upward. In this example, the branches 3 are radially provided as four branches 31, 32, 33, and 34 having a substantially circular bar shape in cross section. The tip of each branch 3 is along a substantially arc centered on the axis of the main shaft 2 as shown in FIG. 1A in plan view, and substantially the same as shown in FIG. 1B in side view. It is on the surface. In this state, a nesting space is secured in which a relatively large washbasin B shape shown by a two-dot chain line in FIG. 1 surrounded by the tip of each branch can be placed, and this nesting space is a nesting behavior of crows. It is effective to induce. From experience, it is most effective to set the size of the upper end of each branch 3 to a diameter of about 35 to 45 cm, for example.
Here, as the material of the main shaft 2 and the branch 3 of the induction nesting tool 1, a metal such as an aluminum material or a steel material is used because of the necessity of wind resistance, weather resistance, strength and the like. Although the cross section has been described as a substantially circular rod shape, other polygonal shapes and irregular shapes may be used alone or in combination with each other, but a substantially circular shape is most preferable. Further, it is desirable that the main shaft 2 and the branch 3 have a brownish brown color that imitates a natural tree.
According to the results of numerous observations by the inventor throughout the country, the nesting of crows is mostly made near the branching point of the branch, and the number of branches is at least 3, preferably 4-5. If it is less than 3, it is difficult to form a nest bed because it has too much space and cannot withstand the wind pressure. In addition, it has been described that the tip of the branch 3 is placed on a substantially arc in a plan view and on the same plane in a side view. Is also acceptable.

FIG. 2 shows a state in which the induction nesting tool 1 is installed on the steel tower T, and shows horizontal angles 11 and 11 connecting the vertical steel material 10 forming the steel tower T and other vertical steel materials. ing. The angles 11 and 11 are perpendicular to each other with the vertical steel member 10 interposed therebetween.
The plate-like arms 12, 12 are fixed to the ends of the angles 11, 11, the lower surface is supported by the triangular support plates 13, 13, protrudes in a substantially horizontal direction, and intersects at a substantially right angle inside the vertical steel material 10. A cylindrical support tool 14 having a round hole is fixedly erected on the upper surface of the intersecting portion of the arms 12, 12, and the lower end of the main shaft 2 of the guiding nesting tool 1 is fitted into the round hole of the support tool 14, and the arms 12, 12. By fixing on the top, the four branches 3 are arranged to spread upward. In this state, a nesting space is secured above the branch point of the branch 3, and this space effectively induces nesting behavior of crows.
Here, although the guide nesting tool 1 is installed on the steel tower T via the support tool 14, it is also possible to adopt a configuration in which an alternative to the arm is directly connected to the lower end of the main shaft 2 and directly fixed to the angles 11 and 11.

FIGS. 3 and 4 show an additional configuration for improving the usability of the guided nesting tool 1. The description of FIG. 3A is a configuration for adjusting the branch length, in which the branch 3 is divided into a lower partial branch 3a and an upper partial branch 3b, and a joint 4 is interposed therebetween. The joint 4 has a main body 4a that is slightly larger in cross-section than the lower partial branch 3a and the upper partial branch 3b in the axial direction, and has a through hole 4b in the axial direction. A strip-shaped slit is formed on the side surface of the main body 4a. 4c is formed. A female screw hole 3c is formed at the lower end of the upper partial branch 3b with a slight gap. The tip of the lower partial branch 3a is fixed to the lower side of the through hole 4b, and the lower end portion of the upper partial branch 3b is inserted to the upper side of the through hole 4b. 3b can slide in the through hole 4b in the vertical direction. The screw hole 3c is exposed from the slit 4c. After adjusting the position of the upper partial branch 3b to a desired height, the fixing tool 4d having a male screw with a head such as a bolt is inserted into the screw hole 3c from the slit 4c. The main body 4a and the upper partial branch 3b are fixedly fixed by screwing. Further, when it is desired to change the position of the upper partial branch 3b, the overall length of the branch can be changed and adjusted to a desired length by loosening the fixing tool 4d and moving the upper partial branch 3b and then tightening the fixing tool 4d again. it can. The joint 4 may be added to all four branches, or any branch may be selected and added.
With this additional configuration, the optimum length of the nesting can be easily found by appropriately adjusting the length of the branches.

FIGS. 3B and 3C show a configuration in which the surface form of the branch 3 is changed. FIG. 3B shows the structure in which the surface of the branch 3 is formed on the uneven portion 3d. b) shows a branch-like sub-branch 3e formed on the surface of the branch 3. The arrangement of the uneven portions 3d and the sub-branches 3e may be regular or random. From experience, it is most effective to provide the sub-branch 3e at a position 50 cm or more away from the branch point of the branch 3. Further, the concave and convex portion 3d and the fine branch 3e may be formed individually or in combination.
The concavo-convex portions 3d and the sub-branches 3e can provide effects such as giving the branches 3 a similar feeling to natural trees and increasing the frictional resistance against materials used for bird nesting.

FIG. 4 shows a configuration for adjusting the branch inclination angle, and an inclination adjusting tool 5 is interposed between the main shaft 2 'and the branch 3', so that the main shaft 2 'and the branch 3' are not integrated. It is separated. Here, an example in which the branch 3 ′ is four branches 31 ′, 32 ′, 33 ′, and 34 ′ will be described.
The inclination adjusting tool 5 has a substantially rectangular support 51 and four fixing tools 52, 53, 54, and 55.
The support 51 is a substantially rectangular metal block material, and the top of the main shaft 2 'is fixed below the center of the flat lower surface, and the flat upper surface is held substantially horizontal. On the upper surface of the support 51, four narrow grooves in a cross shape in a direction perpendicular to the side peripheral surface of the support 51 from the center corresponding to the main shaft 2 ′ in a plan view shown in FIG. 51a, 51b, 51c and 51d are formed, and branches 31 ', 32', 33 'and 34' are slidably inserted in the respective grooves. In the plan view shown in FIG. 4 (b), each groove has a substantially trapezoidal shape with a narrow bottom surface and a wide top surface, and one side is a vertical flat surface, and the other side is an upwardly flat inclined flat surface. It has been. In each of the grooves, the vertical flat surface is located closer to the center corresponding to the main shaft 2 ′, and the inclined flat surface is located on the side peripheral surface side of the support 51, whereby the grooves 51 a, 51 b, 51 c, 51 d are respectively provided. The inserted branches 31 ′, 32 ′, 33 ′, 34 ′ move between the central portion and the side peripheral surface with the bottom surface of the support 51 as a fulcrum, and the inclination angle can be adjusted to, for example, α or β. .

Then, the groove portions 51a, 51b, 51c, 51d are respectively connected to the corresponding arc-shaped gap portions 51e, 51f, 51g, 51h, and screw holes 51i, 51j, which are drilled in the side peripheral surface from which the female threads are cut. It has reached 51k and 51m. As a result, the fixing members 52, 53, 54, 55 are screwed into the corresponding screw holes 51i, 51j, 51k, 51m, and the branches 31 ', 32', 33 ', 34' inserted into the respective groove portions are vertically viewed from the side. It can be fixed in a desired inclination angle by pressing in the direction. Usually, several screw holes 51i, 51j, 51k, 51m are formed in each corresponding gap so as to correspond to a changing inclination angle.
The fixing tools 52, 53, 54, 55 are respectively threaded with male threads that can be screwed into the corresponding screw holes 51i, 51j, 51k, 51m, and the heads are set at the screwing corners or round heads.
Here, when the number of branches is not four, the support 51 may be changed from a substantially rectangular shape to a shape with a number corresponding to the number of branches corresponding to the number.
With this additional configuration, it is possible to easily find the optimum angle for the nesting by appropriately adjusting the inclination angle obliquely above the branch.

  The induction nesting device of the present invention can also be effectively used as an accident countermeasure for a place similar to a power transmission line.

It is (a) top view and (b) side view of the induction nesting tool of an example of this invention. It is a schematic perspective view which shows the state which installed the induction nesting tool of FIG. 1 in the steel tower. In the structure added to the induction nesting tool of FIG. 1, (a) Length adjustment of a branch, (b) Surface uneven part of a branch, (c) Each partial perspective view about the surface subbranch of a branch is there. It is the structure for the inclination-angle adjustment of the branch added to the guidance nesting tool of FIG. 1, (a) Top view, (b) Side view.

Explanation of symbols

1 Guide nesting equipment

2, 2 'spindle

3, 3 ', 31-34, 31'-34' branch

3a Lower part branch

3b Upper branch

3d uneven part

3e fine branch

4 Fitting

4a body

4b through hole

4c slit

4d, 52-55 Fastener

5 Tilt adjuster

51a-51d Groove

51e-51h Cavity 10 Vertical steel 11 Angle

T steel tower

α, β tilt angle

Claims (6)

A metal rod-shaped main shaft is erected below, and at least three metal rod-shaped branches branch from the top of the main shaft and project radially and obliquely upward. A bird's guided nesting device characterized in that a nesting space can be secured.
The bird's guided nesting device according to claim 1, wherein the number of branches is 4 to 5.
The bird nesting device according to claim 1 or 2, wherein the nesting space surrounded by the branching tip has a diameter of 35 cm to 45 cm.
The branch is divided into a lower partial branch and an upper partial branch, and a joint is interposed between the branches. The joint has a body having a through hole in the axial direction and a slit formed on a side surface. A screw hole is bored at a lower end portion, a tip of the lower partial branch is fixed to the lower side of the through hole, and a lower end portion of the upper partial branch is slidably inserted up and down on the upper side. The bird according to any one of claims 1 to 3, wherein a fixing tool is screwed into the screw hole from a slit so that the upper partial branch is fixed to the main body to adjust the branch length. Induction nesting tool.
The bird's induced nesting device according to any one of claims 1 to 4, wherein irregularities and / or twig-like sub-branches are formed on the surfaces of the branches.
  A substantially polygonal metal block support is placed on the top of the main shaft, and a groove having a narrow width equal to the number of branches is formed in the direction perpendicular to the side peripheral surface from the center of the support. Each of the branches is slidably inserted in each side, one side of the groove is taken as a vertical flat surface, the other side is taken up as an inclined flat surface with an upward slope, and the vertical flat surface is closer to the center. The inclined flat surface is located on the side peripheral surface side, and each branch is movable with the bottom surface of each groove portion as a fulcrum, and is drilled at intervals on each side peripheral surface. 6. An inclination angle of each branch can be adjusted by screwing a fixing tool from a screw hole and pressing each branch inserted in each groove in a horizontal and vertical direction. The bird's induction nesting device according to any of the above.

Images