JP2003189783A - Apparatus for preventing bird damage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bird damage-preventing apparatus for preventing a short circuit accident caused by dropping of metals such as wires used for nesting of a bird which comes flying through the air to a high-tension transmis sion steel tower onto an insulator. <P>SOLUTION: This bird damage-preventing apparatus A is installed in the vicinity of hanging position of the insulator of a steel tower arm. In the apparatus A, approach of the bird to the apparatus A is always monitored by sensors 9a to 9d, and when the bird is detected by these sensors, a turntable 12 is rotated by a prescribed angle with an electric motor 10 and a pair of terminal pieces 29 and 31 to which high voltage is applied is turned toward a direction in which the bird exists and is brought into contact with the bird. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bird damage prevention device for preventing a short circuit accident or the like caused by a bird flying in a high voltage distribution tower or the like.

[0002]

2. Description of the Related Art Conventionally, when a bird flies to a high-voltage power distribution tower to form a nest, and particularly when it nests near the insulator suspension position at the tip of the tower arm, the bird used for nesting has carried it. It was not uncommon for wires and other metals to fall onto insulators and cause a short circuit. Such a power transmission accident due to bird damage is one of the causes of the accident that occurs more frequently than other causes, and it has been pointed out that it is necessary to take appropriate measures and measures.

Therefore, as a measure against the above-mentioned bird damage, for example, a method of stimulating the sight and hearing of a bird that induces a power transmission accident is widely practiced. As a method of stimulating the sight of the bird, for example, a balloon with an eyeball pattern is floated around the tower to intimidate the bird, or a plurality of reflectors are attached to the tower to reflect sunlight on the reflector. The one that gives fear to a bird by letting it irradiate the bird is often used. Also, as a method of stimulating the hearing of birds, there is known a method of making birds dislike sounds, for example, making a gunshot or an explosive sound to drive the birds away from the tower.

In this way, by stimulating the sight and hearing of birds,
If it is possible to prevent birds from flying near the steel tower, it is possible to avoid the occurrence of short-circuit accidents due to metal such as wire used for nesting of birds falling on the insulator, thus preventing this kind of power transmission accident. Can be prevented.

[0005]

However, since the above-mentioned bird damage prevention device stimulates sight and hearing, the bird damage prevention device is used for birds such as crows having excellent learning ability. At the beginning of installation, it is possible to effectively stimulate sight and hearing and avoid approaching a tower or a high-voltage distribution line. However, the above-mentioned method for stimulating sight and hearing causes habituation due to repeated experience. Also, since there is no real harm, the effect gradually fades to birds such as crows, which have excellent learning abilities, and eventually it becomes completely useless.

Therefore, the present invention proposes a bird damage prevention device which does not cause a reduction in the effect due to habituation even for a bird having an excellent learning ability.

[0007]

A bird damage prevention device according to claim 1, wherein a high voltage power supply device, a pair of terminal pieces for extracting the output voltage of the high voltage power supply device to the outside, and a predetermined magnetism are charged. And a sensor for detecting the presence of a bird. The pair of terminal pieces and the magnetic piece are provided on a rotatable table, and the table rotationally drives the table. Based on the electric motor and the detection signal of the sensor,
It is configured to include means for controlling the rotation angle of the electric motor and the presence or absence of output of the high voltage power supply device.

A bird damage prevention device according to a second aspect is the first aspect.
In the bird damage prevention device as described above, the table includes an intermediate plate fixed to a support case that houses the electric motor, and a plurality of rotating bodies that rotate in contact with the table on an upper surface of the intermediate plate, The rotating body is a means for arranging a part of the rotating body so as to be electrically connected to the pair of terminal pieces, and for urging the rotating body interposed between the supporting case and the table to the table side. It is configured by including a conductive first spring member electrically connected to the device and a second spring member for urging the table downward.

According to a third aspect of the bird damage prevention apparatus of the present invention, in the bird damage prevention apparatus of the first and second aspects, the table is
The rotating body and the pair of terminal pieces are concentrically provided with two conductive portions that are electrically connected to each other.

A bird damage prevention device according to a fourth aspect is the first aspect.
The bird damage prevention device according to any one of claims 1 to 3, wherein a groove portion is formed on the outer peripheral side surface of the support case, and a protrusion provided around the inner peripheral surface of the table is fitted so that a predetermined gap is formed in the groove portion. Configured together.

A bird damage prevention device according to a fifth aspect is the first aspect.
In the bird damage prevention device according to any one of claims 4 to 4, the control means is configured such that the output of the high-voltage power supply device is performed only when the sensor detects a bird.

According to the present invention, the device is installed near the insulator installation site of a structure such as a high-voltage transmission tower, and a high-voltage electric shock is applied to a bird approaching the vicinity of the insulator, whereby Prevents nesting near insulators,
As a result, it is possible to reliably suppress the problem that a metal such as wire used for nesting falls on the insulator to cause a short circuit.

Further, unlike the conventional method for stimulating the sight and hearing, the bird damage prevention apparatus of the present invention has a structure in which the bird is actually electrically stimulated. However, it does not get used to the pain caused by this electrical stimulation, and can function as a bird damage prevention device for a long period of time.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall view schematically showing a high-voltage power distribution tower 1 in which the bird damage prevention device of the present invention is installed.
In FIG. 1, 2 is a steel tower body, and 3 is a steel tower arm protruding laterally from the steel tower body 2. Reference numeral 4 is an insulator suspended from the tip end portion of each of the plurality of steel tower arms 3, and 5 is a high-voltage power transmission line insulated and supported by the insulator 4.

FIG. 2 shows a steel tower arm 3 of the high-voltage power distribution steel tower 1.
FIG. 4 is an enlarged view of a main part of the high-voltage power transmission line 5 shown in FIG.
An insulator 4 that insulates and supports is suspended, and in the vicinity of the suspended position of the insulator 4, the bird damage prevention device A according to the present invention is provided, for example, with the lower frame 3a of the steel tower arm 3 interposed in the center. , The upper sandwiching piece 6b, which is clamped and fixed to the lower sandwiching piece 6a by the clamp metal fitting 7, is attached so as not to swing.

Next, the structure of the bird damage prevention device A will be described with reference to FIG. FIG. 3 is a vertical cross-sectional view showing an internal configuration of the bird damage prevention device A. In FIG. 3, 8 is a support case formed in a cylindrical shape with a bottom, and the support case 8
On the outer peripheral side surface of, for example, 4 at 90 ° intervals from each other.
Two sensors 9a to 9d are arranged to detect a bird or the like approaching the apparatus A. A known infrared sensor or the like may be used as the sensors 9a to 9d.

In FIG. 3, 10 is an electric motor housed in the center of the support case 8, and 11 is an electric motor 10.
It is a rotating shaft that is rotated by the drive of. A table 12 has a through-hole (not shown) through which the rotary shaft 11 is inserted at a central position, and is a cylindrically-shaped rotary body that horizontally rotates above the support case 8 ( Hereinafter, the turntable), the turntable 12
On the inner peripheral surface in the vicinity of the end edge of the opening, a single ridge 13 is circumferentially provided along the inner peripheral surface, and this is formed in a single concave groove 14 formed on the outer peripheral surface of the support case 8. It is fitted so that a predetermined gap S is formed.

Reference numeral 15 is a disk-shaped middle plate which is arranged at an upper position of the support case 8 by forming an insertion hole 15a through which the rotary shaft 11 of the electric motor 10 is inserted, and 16 supports the middle plate 15. In order to fix it between the case 8 and the turntable 12, a disc-shaped lower plate 22 attached to the upper edge of the support case 8 is kept at a distance of, for example, 120 °.
The supporting column equipped upright is shown.

A plurality of bottomed fitting holes 18a or through holes 18b for rotatably accommodating the spherical body 17 as a rotating body are formed on the upper surface of the intermediate plate 15. In addition, a support member 20 made of the same conductive material (carbon or the like), which is provided with a conductive foil body (copper foil or the like) 19 on the upper surface, is fitted and inserted into the through hole 18b from below. The spherical body 17 is slidably mounted on the upper side.

Further, the supporting member 20 is fixed to the upper open end of the supporting case 8, and the rotating shaft 11 is provided at the center.
Is connected to a disk-shaped lower plate 22 having an insertion hole 21 formed therein through a conductive spring member 23 that biases the support member 20 upward. Then, the lower plate 22
The connecting portion of the above with the spring member 23 is constituted by a conductor 24 capable of conducting electricity.

25 is housed in the support case 8 together with the electric motor 10, and is electrically connected to a conductive body 24 provided on the lower plate 22 and a power source (not shown) provided separately from the apparatus A. A high voltage power supply device that converts a voltage supplied from the power supply (not shown) into a high voltage and outputs the high voltage. The power source (not shown) provided separately from the apparatus A may be composed of, for example, a solar battery kit as an auxiliary power source and a charging unit.

Reference numeral 26 denotes a controller for determining the rotation angle of the rotary shaft 11 of the electric motor 10 and the presence / absence of the output of the high voltage power supply device 25 from the detection signals of the sensors 9a-9d, and a drive circuit for the electric motor 10. 27a and 27b are provided on the lower surface of the turntable 12 at a portion in contact with the sphere 17 and the turntable 12 is provided.
Is a conductive film made of copper foil or the like having two concentric circles centered on the center.

Reference numeral 28 denotes a first conductive pillar made of a metal material or the like, which is attached on the turntable 12 and has a base end connected to the conductive film 27a inside the two conductive films 27a and 27b. Is one terminal piece attached to the upper end of the conductive column 28 perpendicularly thereto.

Reference numeral 30 denotes a conductive film 27b outside the conductive films 27a and 27b provided on the turntable 12.
The second conductive column 31 has a base end connected to the upper end of the second conductive column 30 and is perpendicular to the second conductive column 30 and is provided near the tip of the one terminal piece 29. The other terminal piece arrange | positioned with the front end is shown.

Reference numeral 32 denotes a magnetic force piece consisting of a base shaft 32a standing on the side opposite to the pair of terminal pieces 29, 31 on the turntable 12 and a threatening piece 32b mounted perpendicularly to the base shaft 32a. Has a predetermined magnetism. The reference numeral 32 is interposed between a step 33 formed by projecting upward in the center of the turntable 12 and a stopper 34 provided at the upper end of the rotary shaft 11 which is inserted through the center of the turntable 12 and projects upward. Then
A second spring member having a predetermined elastic force that urges the turntable 12 downward.

FIG. 4 shows a top view of the bird damage prevention device A. As shown in FIG. 4, in the bird damage prevention device A, the middle plate 15 is fixed on three supporting columns 16, and in the radial direction on the middle plate 15, four spherical bodies 17 are arranged at right angles in the vertical and horizontal directions.
They are arranged one by one. Further, on the sphere 17, two conductive films 27 arranged concentrically in contact with the sphere 17 are provided.
a and 27b are attached to the lower surface of the turntable 12,

Then, on the turntable 12,
A pair of terminal pieces 29, 31 are provided, and a threatening piece 32b is provided on the side opposite to the pair of terminal pieces 29, 31.
Is attached.

Next, the structure of the control circuit 26 will be described with reference to FIG. In FIG. 5, reference numeral 36 is a controller that inputs the detection signals of the sensors 9a to 9d provided on the outer peripheral side surface of the support case 8 shown in FIG. 3 and drives and controls the electric motor 10 and the high-voltage power supply device 25.

An electric motor capable of position control is used as the electric motor 10, and FIG. 5 shows an example in which a 4-phase stepping motor is used as an example. T shown in FIG.
r ₁ is a transistor whose base is connected to the output of the controller 36, whose emitter is grounded, and whose collector is connected to one end of the relay Ry. Further, R ₁ is a resistor connected in series to the relay Ry and having one end connected to the constant voltage power source V ₂ .

Next, an example of the circuit configuration of the high voltage power supply device 25 will be described. The high voltage power supply device 25
Includes a switch 38 for switching on / off depending on whether the relay Ry is energized, a DC power supply 39 connected in series with the switch 38, and a capacitor C ₁ connected in parallel with the switch 38 and the DC power supply 39. ing.

Further, resistors R ₂ and R ₃ and a Zener diode D ₁ connected in series are connected to the capacitor C ₁ in parallel, and the connection point between the resistors R ₂ and R ₃ is connected to the capacitor C _1. , a coil L ₁ constituting the primary side of the transformer T ₁
One end of is connected. The other end of the coil L ₁ is connected to the anode of the diode D ₂ and
₂ of the cathode is connected to the base of the transistor Tr _2.

The emitter of the transistor Tr ₂ is connected to the anode of the Zener diode D ₁ and one end of the capacitor C ₁ and the negative side of the DC power source 38, and the collector of the transistor Tr ₂ is the primary side of the transformer T _1. Is connected to one end of a coil L ₂ constituting the. The other end of the coil L ₂ is connected to one end of the resistor R ₂ , the other end of the capacitor C ₁ and _one end of the switch 37.

The coil L₁, L₂Opposed to this
And the transformer T₁L that constitutes the secondary side of the₃But
Arranged, said coil L₃Diode D at one end₃of
The cathode is connected. Also, the diode D₃
The anode of the coil L ₃Connected in parallel with
Anti-R_FourIs connected to one end of the resistor R_FourParallel to this
Capacitor C₂Are connected.

Further, a coil L ₄ constituting the primary side of the transformer T ₂ is connected in parallel with the capacitor C ₂ , and an anode of a diode D ₄ is connected to one end of the coil L _4. There is. The cathode of the diode D ₄ is connected to the capacitor C ₂ , the resistor R ₄ and one end of the coil L ₃ .

The anode of the thyristor THR is connected to the cathode of the diode D _{4, and} the cathode of the thyristor THR is connected to one end of the coil L ₄ and the anode of the diode D ₄ . Then, the transformer T ₂ is connected to the coil L ₄ so as to face the coil L _4.
The high voltage power supply device 25 shown in FIG. 3 is configured by arranging the coil L ₅ constituting the secondary side of the.

On the other hand, the stepping motor 10 has a voltage signal (pulse signal) output from the controller 36.
Of four transistors Tr _{3 to} Tr ₆ input to the base
And the collectors of the four transistors Tr _{3 to} Tr ₆ and the four-phase exciting coils of the electric motor 10 (see FIG. 6) l _{1 to} l
₄ is connected to the constant voltage power source V _{1 and} has a driving circuit 41 including four resistors R ₅ , R ₆ , R ₇ and R ₈ . Incidentally, the four emitters of the transistors Tr ₃ to Tr ₆ are grounded.

Next, the use and operation of the bird damage prevention apparatus A constructed as described above will be described. First, the bird damage prevention device A is shown in FIG.
Fix on top. In this case, in the bird damage prevention device A, as shown in FIG. 2, the upper and lower holding pieces 6a and 6b and the fastening metal fitting 7 are provided.
Since the lower frame 3a of the steel tower arm 3 is fitted between the upper and lower clamping pieces 6a, 6b and tightened by the tightening metal fitting 7, the bird damage prevention device A
Is securely fixed near the hanging position of the insulator 4 so as not to swing.

Then, an auxiliary power source (not shown) consisting of a solar battery kit attached to a position different from the tower main body 2 and a charging part is connected to the bird damage prevention device A. As a result, the power of the auxiliary power supply can be supplied to the bird damage prevention device A, and the high voltage power supply device 25, the control circuit 26 and the electric motor 10 shown in FIG.

When the bird damage prevention device A is attached to the tower main body 2 as described above, the bird damage prevention device A detects that a bird or the like approaches the vicinity of the suspension position of the insulator 4 as shown in FIG. It is constantly monitored by 9d. At this time, the controller 35 sets the reference positions of the first and second terminal pieces 29 and 31 in advance, and the reference position of the terminal pieces 29 and 31 is, for example, the coil of the electric motor 10 shown in FIG. It suffices to set an intermediate position between l ₁ and the coil l ₂ (the position where the terminal piece 29 is described) as the reference position.

Then, the four sensors 40a-40d
Among them, for example, when only the sensor 9b shown in FIG. 7A or two sensors 9a and 9b simultaneously detect the presence of a bird, the transistor T of the drive circuit 41 shown in FIG.
A pulse signal for one pulse, which is divided by a dotted line in FIG. 8A, is simultaneously output from the controller 36 to each of the bases r _{3 to} Tr ₆ .

As a result, the transistor to which the "H" level pulse signal is input is turned on and the collector becomes "L" level. Further, the transistor to which the "L" level pulse signal is input to the base is kept off and the collector becomes "H" level. And the transistor Tr
The collectors of _{3 to} Tr ₆ are connected to one ends of the coils l _{1 to} l ₄ of the electric motor 10 shown in FIG. 6, while the other ends of the coils l _{1 to} l ₄ are connected to the negative terminal of the DC power supply V _3. Has been done.

As a result, a current flows through the coils l ₂ and l ₃ but no current flows through the coils l ₁ and l ₄ ,
A constant magnetic pole is generated at a predetermined position of the magnet rotor of the electric motor 10 (an intermediate position between the coil l ₂ and the coil l ₃ ), and the magnetic pole different from that generated in the rotor is attracted, so that the rotor is rotated counterclockwise from the reference position. The terminal piece 29 provided on the turntable 12 from the position shown in FIG. 7A to the position shown in FIG. 7B by rotating 90 ° (forward rotation).
31 is rotated.

At this time, since the presence of a bird is detected by the sensor 9b alone or by the two sensors 9a, 9b, the bird is in front of the sensor 9a or the position of the two sensors 9a, 9b. Since it is considered that it exists within an angle (90 °) formed by two straight lines connecting the center position of the turntable 12 with the turntable 12, the terminal piece 29 is rotated by 90 ° by rotating the pair of terminal pieces 29, 31. , 31 can be surely brought into contact with the bird.

On the other hand, the controller 36 uses the sensor 9
While detecting the presence of a bird in any of a to 9d, FIG.
A pulse signal is output to the base of the transistor Tr ₁ shown in to turn it on. As a result, a current flows from the constant voltage power source V ₂ to the relay Ry via the resistor R ₁ , and the switch 38 is turned on. Wherein the DC power source 39 by on of the switch 38 via a resistor R ₂ a current flows to the base of the transistor Tr _2, to turn on the transistor Tr _2.

When the transistor Tr ₂ is turned on, a voltage is generated in the primary side coils L ₁ and L ₂ forming the transformer T ₁ . In the coil L ₁ , the exciting current increases with the passage of time, and the core of the transformer T ₁ reaches the saturation region. As a result, the collector of the transistor Tr ₂
The voltage between the emitters drops, and the transistor Tr ₂ rapidly shifts to the off state.

The transistor Tr₂Is turned on
When shifting to the off state, the coil L ₁Energy accumulated in
Rugie is the secondary coil L₃Output from the coil
L₃Output is diode D₃Flow in one direction. So
Then, the diode D₃The current that flows in the capacitor C
₂Stored in the thyristor THR
Turns on and the transformer T₂Coil forming the primary side of the_Four
A voltage is applied to.

When a voltage is applied to the coil L ₄ , the voltage is boosted by the winding ratio of the primary side and secondary side coils L ₄ and L ₅ of the transformer T ₂ and is provided on the lower plate shown in FIG. Applied to the conductor 24. The voltage applied to the conductor 24 is a conductive spring member 23 → support member 20 → conductive foil body (copper foil or the like) 19 → sphere 27a → conductive film 27a, 2
7b → a pair of terminal pieces 29, 3 via conductive columns 28, 30
1 is applied.

When the bird comes into contact with the terminal pieces 29 and 31 due to the rotating operation, a large current is passed between the terminal pieces 29 and 31 via the bird that comes into contact with the terminal pieces 29 and 31. Therefore, the bird flying near the suspension position of the insulator 4 of the steel tower arm 3 receives the energization of the large current (hereinafter referred to as electric shock) and escapes from the steel tower arm 3. Therefore, it is possible to reliably prevent birds from nesting in the vicinity of the hanging position of the insulator 4, and as a result, it is possible to reliably prevent metal such as wire from falling on the insulator 4 and causing a short circuit accident. Can be prevented.

Of the four sensors 9a to 9d, only the sensor 9c or the two sensors 9b and 9d is used.
When c detects the presence of a bird at the same time, the controller 36 shown in FIG. 5 inputs two pulses of the pulse signal shown in FIG. 8A to the bases of the transistors Tr _{3 to} Tr ₆ .

As a result, the coils l ₂ and l ₃ shown in FIG.
→ Current is applied to coils l ₃ and l ₄ in this order, and motor 1
The rotor of No. 0 is rotated counterclockwise (forward rotation), and the pair of terminal pieces 29, 31 on the turntable 12 connected to the rotor via the rotary shaft 11 is moved to the position shown in FIG. Rotate counterclockwise 180 ° from the reference position) to the position shown in FIG.

Of the four sensors 9a to 9d, only the sensor 9c or the two sensors 9c and 9d is used.
When d detects the presence of a bird at the same time, the controller 36 shown in FIG. 5 inputs two pulses of the pulse signal shown in FIG. 8B to the bases of the transistors Tr _{3 to} Tr ₆ .

Then, the coils l ₁ , l ₄ → l shown in FIG.
By supplying current to ₃ and l ₄ in order, the electric motor 10
Rotate the rotor in the clockwise direction (reverse rotation) to rotate the rotary shaft 1
The pair of terminal pieces 29, 31 on the turntable 12 connected via 1 are rotated 180 ° counterclockwise from the reference position shown in FIG. 7A to the position shown in FIG. 7C.

Further, only the sensor 9d, or
If sensors 9c and 9d detect the presence of a bird at the same time,
By inputting one pulse of the pulse signal shown in FIG. 8B into the bases of the transistors Tr _{3 to} Tr ₆ , the rotor rotates 90 ° counterclockwise, and a pair of terminal pieces on the turntable 12 are rotated. 29 and 31 are rotated from the position (reference position) shown in FIG. 7A to the position shown in FIG.

As described above, by rotating the pair of terminal pieces 29, 31 by 90 ° or 180 ° in the clockwise direction or the counterclockwise direction depending on the type of the sensor that detects the bird, the terminal pieces 29, 31 can be securely connected. The birds existing around the device can be contacted.

Then, as described above, while the sensor detects the presence of a bird, the controller 36 outputs a pulse signal to the base of the transistor Tr ₁ , and the high voltage power supply device 25 shown in FIG. To terminal pieces 29, 3
A high voltage is applied to 1. Therefore, 9 of the rotor
When the terminal pieces 29 and 31 come into contact with the bird by 0 ° or 180 ° rotation, a large current can be applied to the bird that comes into contact with the pair of terminals.

That is, in the bird damage prevention apparatus of the present invention, when only one of the four sensors detects the presence of a bird, the pair of terminal pieces 29, 3 are oriented in the direction in which the sensor is located.
1 is rotated, and when two of the four sensors detect the presence of a bird at the same time, the position farthest from the preset reference position is rotated clockwise or counterclockwise. The pair of terminal pieces 29, 31 are rotated to the sensor position provided in
A high voltage is applied between the terminal pieces 29 and 31 while the bird is being detected by the sensor.

As shown in FIG. 3, the turntable 12 which rotates with the rotation of the rotor is provided between the second spring member 33 and the intermediate plate 15 which urges the turntable 12 downward (toward the support case 8). Since the first spring member 23 slides and rotates on the sphere 17 biased upward (on the turntable 12 side), even if the turntable 12 is slightly tilted due to contact with a bird or the like, the turn The inclination of the table 12 is surely absorbed by the elastic force of the first and second spring members 23 and 33, and the turntable 12 can continue to rotate satisfactorily.

Further, even when the turntable 12 is excessively inclined due to an external force, the inner peripheral surface of the turntable 12 has a groove 14 formed in the outer surface of the support case 8. Since the projection 13 to be fitted is provided around the turntable 8, the turntable 8 is excessively inclined, so that the projection 13 is securely hooked in the concave groove 14, and the turntable 12 is further prevented. It is possible to reliably prevent the vehicle from tilting or coming out of the hooked position and hindering the rotation operation.

Even if the pair of terminal pieces 29, 31 move to any position as the turntable 12 rotates, the high voltage applied from the high voltage power supply device 25 to the sphere 17 is concentric. The presence of the two conductive films 27a, 27b arranged on the positive side ensures the conductive columns 28, 3
It is transmitted to 0, and it becomes possible to apply a high voltage to a pair of terminal pieces 29 and 31.

On the other hand, the base shaft 3 attached to the turntable 12 at a position facing the pair of terminal pieces 29, 31.
Since the magnetic force piece 32 composed of 2a and the intimidating piece 32b attached vertically to this is configured to have a constant magnetic force,
The bird approaching the device A loses its sense of direction by flying into the magnetic field in which the magnetic field 32 is disturbed by the magnetic field of the surrounding magnetic field.

Therefore, in order to prevent birds from flying and staying in the range covered by the magnetic field formed by the magnetic force pieces 31, nest formation in the vicinity of the suspension of the insulator 4 of the steel tower arm 3 is avoided, and high pressure is high. It is possible to suppress the occurrence of an electric accident in the distribution tower 1.

In the above-mentioned embodiment, the example in which the spherical body 17 having conductivity is used as the rotating body for rotating the turntable 12 on the intermediate plate 15, has been described.
As the rotating body, a wheel which has conductivity and is fitted into the fitting hole 18a and the through hole 18b, and which rotates between the turntable 12 and the intermediate plate 15 is used.
May be configured.

Furthermore, the number of sensors provided in the bird damage prevention device A of the present invention is not limited to four provided at an angle interval of 90 ° with each other. By increasing the number of phases of the electric motor 10 according to
It goes without saying that it may be possible to finely control the operation rotation angle of No. 1.

As described above, the bird damage prevention apparatus A of the present invention is
By detecting the birds flying around the device A surely by the sensors provided in four directions and automatically contacting the pair of terminals to which a high voltage is applied to the birds, it is possible to increase It is possible to prevent birds from nesting in the vicinity of the insulator by applying electric shock by voltage to escape from the tower.

Further, since the high voltage is applied to the pair of terminal pieces 29, 31 only while the presence of a bird is detected by the sensors 9a to 9d, the terminal pieces 29, 31 are formed.
Unlike the case where a high voltage is constantly applied to the battery, wasteful power consumption can be suppressed as much as possible, and for example, the problem that the power stored in the charging part of the solar battery kit cannot be secured when necessary is reliably prevented. be able to.

[0066]

The bird damage prevention device according to the first aspect of the present invention avoids a bird from approaching the periphery of the device by forming a magnetic field around the device by a magnetic piece, and should the bird approach the vicinity of the device. Even if it does, the sensor immediately detects the presence of a bird and applies an electric shock by high voltage, so if this device is installed near the insulator suspension position, the bird will nest at this position. Can be reliably prevented, and
It is possible to reliably prevent metal such as wires used for nesting from dropping on the insulator and causing a short circuit accident,
It is convenient.

In the bird damage prevention device according to the second aspect of the invention, the table is rotated on the rotating body electrically connected to the high-voltage power supply device and the pair of terminal pieces. In this case, the output voltage of the high-voltage power supply device can be reliably applied to the pair of terminal pieces, and the electric shock operation can be favorably performed on the detected bird, which is convenient.

Further, in the bird damage prevention device according to the second aspect, since the table is rotated by being sandwiched between the first and second spring members, even when an external force due to contact of a bird or the like is applied to the table. The external force is favorably absorbed by the first and second spring members, the rotation of the table is not hindered, and the table can be reliably rotated, which is convenient.

According to another aspect of the bird damage prevention apparatus of the present invention, a conductive portion capable of energizing the rotating body electrically connected to the high-voltage power supply apparatus and the pair of terminal pieces is arranged on the lower surface of the table in two concentric circles. Since it is configured to be brought into contact with the rotating body, the electrical connection between the terminal piece and the high-voltage power supply device can be maintained with a simple configuration when the table rotates, which is convenient. .

In the bird damage prevention device according to the fourth aspect of the present invention, the concave groove formed on the outer peripheral surface of the support case and the protrusion provided on the inner peripheral surface of the table are fitted to each other with a predetermined space therebetween. The use of the predetermined space does not hinder the rotation operation of the table due to the use of the predetermined space, and when the table is excessively tilted, the protrusion is surely applied to the groove. Since it is stopped, it is possible to reliably prevent the table from coming off the normal hooking position and hindering the rotation operation, which is convenient.

In the bird damage prevention device according to the fifth aspect of the invention, the high voltage power supply device can output the high voltage only while the presence of the bird is detected by the sensor. Therefore, while the sensor is not detecting the bird, The wasteful power is not consumed, and the power stored in the charging unit can be effectively used only when necessary.

[Brief description of drawings]

FIG. 1 is an overall view of a general high-voltage power transmission tower.

FIG. 2 is an enlarged view showing a state where the bird damage prevention device of the present invention is attached to a steel tower arm of the high-voltage power transmission tower.

FIG. 3 is a vertical cross-sectional view showing the configuration of the bird damage prevention device.

FIG. 4 is a top view of the bird damage prevention device.

FIG. 5 is a control circuit diagram of the bird damage prevention device.

FIG. 6 is a configuration diagram showing an example of an electric motor that constitutes the bird damage prevention device.

FIG. 7 is an operation explanatory view of the electric motor.

FIG. 8 is a waveform diagram showing a pulse signal input to the base of a transistor forming the drive circuit of the electric motor.

[Explanation of symbols]

1 High voltage distribution tower 3 steel tower arm 4 insulator 8 support cases 9a-9d sensor 10 electric motor 11 rotation axis 12 turntable 13 ridges 14 groove 15 Middle plate 17 sphere 19 Conductive foil 20 Support member 22 Lower plate 23 First Spring Member 25 high voltage power supply 26 Control circuit 27a, 27b Conductive film 28,30 Conductive columns 29,31 Terminal piece 32 Magnetic piece 33 Second spring member 36 controller 38 switch 39 DC power supply 41 drive circuit A bird damage prevention device

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2B121 AA07 DA02 DA22 DA62 DA63                       EA21 FA13

Claims (5)

[Claims] 1. A bird damage prevention device installed in a structure such as a high-voltage power transmission tower, comprising a high-voltage power supply device, a pair of terminal pieces for drawing out the output voltage of the high-voltage power supply device to the outside, and a predetermined magnetic field. And a sensor for detecting the presence of a bird. The pair of terminal pieces and the magnetic piece are provided on a rotatable table, and the table rotates the table. A bird damage prevention device comprising a driving electric motor and means for controlling a rotation angle of the electric motor and presence / absence of output of a high-voltage power supply device based on a detection signal of the sensor. 2. The table includes an intermediate plate fixed on a support case for accommodating the electric motor, and a plurality of rotating bodies that rotate in contact with the table on an upper surface of the intermediate plate. Is means for urging the rotating body interposed between the support case and the pair of terminal pieces so as to be electrically connected to the pair of terminal pieces to the table side. The bird damage prevention device according to claim 1, further comprising a first electrically conductive spring member electrically connected to the second spring member for urging the table downward. 3. The bird damage prevention device according to claim 1, wherein the table is configured by concentrically including two conductive portions that are electrically connected to the rotating body and the pair of terminal pieces. . 4. A groove is formed in the outer peripheral side surface of the support case, and a ridge formed around the inner peripheral surface of the table is fitted into the groove via a predetermined gap. Item 3. A bird damage prevention device according to items 1 to 3. 5. The bird damage prevention device according to claim 1, wherein the control means is configured such that the voltage output of the high-voltage power supply device is performed only when the sensor detects a bird.