JP2008256533A - Extendable electroscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and surely confirm a voltage detection result by constituting freely extendably a probe, and by providing a voltage detection display element in a gripping part side of an extendable rod. <P>SOLUTION: An electroscopic main body 40 is provided in the gripping part 30 side of the extendable rod 20, the probe 80 is provided in the other end side, a hot-line state is detected by the probe, and a hot-line detection signal is transmitted to the electroscopic main body via a transmission part 50. The electroscopic main body is provided with the voltage detection display element 44 and a buzzer 45, and the display element emits light (lights on or is flickered) when the hot-line detection signal is obtained. The buzzer is driven simultaneously. A lighting state of the display element is surely confirmed because the display element is positioned within reach of a worker. Which a wire to be measured is under the hot-line state or a dead-wire state is accurately obtained thereby without being affected by a length of the extendable rod and a wind force. The vibration of the buzzer is transmitted to the gripping part, and the voltage detection is got based on a visual sense, an auditory sense and tactile sense. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a telescopic electric detector. More specifically, when a live line state of an electric wire to be measured is detected, the light emitting portion of the electric detection main body provided on the gripping portion side is displayed by light emission display or the like. The present invention relates to a telescopic voltage detector that can reliably recognize an electric state.

  When constructing transmission lines and distribution lines, first make sure that the high-voltage and extra high-voltage overhead lines and low-voltage distribution lines are in a live line state (charged state) or dead line state (power outage state). It needs to be detected. As a voltage detector used for such a purpose, for example, an apparatus having a configuration such as “automatic return type coherer voltage detector” in Patent Document 1 and “voltage detector” in Patent Document 2 has been proposed.

  Both the “automatic return-type coherer voltage detector” in Patent Document 1 and the “voltage detector” in Patent Document 2 bring the probe (electron detector) close to or in contact with the electric wire, and when the electric wire to be measured is in a live state, The electric wire to be measured is detected by blinking a light emitting element provided in the electric main body or simultaneously driving an acoustic element such as a buzzer. Such a voltage detector is mainly used for voltage detection of a low-voltage electric wire, and the probe is often short and fixed.

On the other hand, as a voltage detector for a high-voltage electric wire, a telescopic type voltage detector as shown in Non-Patent Document 1, Non-Patent Document 2, and Non-Patent Document 3 is mainly used.
In both the non-patent document 1 and the non-patent document 2, the probe is extendable and contractable with respect to the detection main body, and the probe extends to several meters (about 2 to 5 m) when extended. . Therefore, even in the case of power transmission line construction, it is possible to examine the live state of the stretched high-voltage power transmission line without an operator climbing the steel tower and approaching the power transmission line. If the wire to be measured is in a live state, the display element provided in the voltage detection main body is turned on (flashes) or the built-in buzzer is driven, so that the voltage detection result can be known visually and audibly. . Non-Patent Document 3 discloses a configuration in which a windmill is attached to the probe side, and the windmill is rotated using an induced electrostatic charge when the measured electric wire is in a live line state. In this case, a display element or the like is not necessary.
JP 2002-221542 A JP 2002-257870 A Hasegawa Electric Industry High Voltage Voltage Detector (HSS-6) Jeffcom High / Low Voltage Voltage Detector (SEC-7000L) Hasegawa Denki Kogyo high voltage extra high voltage detector (windmill type WM type)

  By the way, in any of the voltage detectors disclosed in Patent Document 1 and Patent Document 2, since the probe is fixed to the power detection main body or very short, it is not possible to detect a live line state such as a power transmission line. .

  Further, in the voltage detector disclosed in Non-Patent Document 1 or Non-Patent Document 2, one end of the rod forms a gripping part for an operator, and the voltage detection main body is attached to the tip which is the other end. In many cases, a probe is attached to the tip of the main body. For this reason, when detecting electricity with the probe extended to the maximum during the daytime when sunlight falls, it is possible to visually check whether the display element provided in the detecting body emits light (lights up or flashes). Had the problem of not being able to. In particular, when the sun is positioned on an extension line between the line of sight and the voltage detection main body, it is not easy to accurately check the light emission state.

  In addition to the display element, the detector body is often equipped with a buzzer or other notification means, but on the steel tower, the buzzer sound is accurately confirmed by being disturbed by the wind flow and surrounding noise. It can be difficult. For this reason, there has been a problem that it may take time to confirm the voltage detection.

  In addition, when using a windmill as in Non-Patent Document 3, it may take time to recognize the rotation of the windmill under the situation where the probe is extended to the maximum as in the case described above to detect electric power. . Also, when the wind is blowing, the windmill may be rotated by the wind depending on the direction of the wind, which makes it difficult to determine.

  The present invention has been made to solve such problems. That is, an object of the present invention is to make the probe extendable and retractable, and by providing a voltage detection display element on the gripping part side of the telescopic rod, the telescopic type can be easily and reliably recognized. It is to provide a voltage detector.

  The present invention includes a telescopic rod (20) provided with a gripping part (30) at one end and an electroanalyzer (80) at the other end, and a power detection body provided on the gripping part side. (40), a light-emitting display light-emitting element (44) provided in the voltage detection main body, and a live line detection signal transmission unit (50) provided on the electron detection side and connected to the electron detection side And a telescopic electric detector characterized in that, when the electron detector detects a live wire state of a measured electric wire, the light emitting element emits light based on the live wire detection signal. .

  Here, the live line detection signal from the transmission unit (50) is preferably transmitted wirelessly, wiredly, or optically.

  The present invention is also provided with an extendable rod (20) having a gripping portion (30) at one end and an electroanalyzer (80) at the other end, and the gripping portion (30) side. Electrostatic detection body provided in the other end side of the telescopic rod (20), the light emitting element (44) for electric power detection display provided in the electrical detection body (40), and the telescopic rod (20) The rotation detection signal which consists of a type windmill (70) and detected the rotation state of the electrostatic sensitive windmill is transmitted to the voltage detection main body as a live line detection signal.

In the present invention, the voltage detection main body is provided on one end side (grip part side) of a telescopic rod (extensible rod), and a probe is attached to the other end side. A live line detection signal obtained based on the electrostatic voltage induced in the probe is transmitted to the power detection main body using wired or wireless. The detection body is provided with a display element which is a light emitting element, and preferably a notification element (vibrator, buzzer, etc.), and when a live line detection signal is obtained, the display element emits light (illuminates or flashes) on the operator's side. ) The light emitting color of the display element is preferably a color (red) that makes it easy to visually recognize the light emitting state. If the notification element is driven at the same time, the vibration and the like are transmitted to the gripping part, so that the voltage detection state can be grasped from the sense of sight, hearing and touch.
By locating the display element and the notification element at the operator's hand (gripping part side) in this way, the lighting state of the display element can be reliably confirmed, and whether the measured electric wire is in a live line state or in a dead line state It is possible to grasp accurately whether there is.

  When a windmill is provided between the probe and the telescopic rod, the electrostatic sensitive windmill rotates when the probe detects an electrostatic charge from the electric wire to be measured. The rotation of the electrostatic sensitive wind turbine is detected by a sensor, and the detected rotation detection signal is sent to the voltage detection main body as a live line detection signal. Also in this case, since the voltage detection is displayed on the operator's hand side, the live line state of the electric wire to be measured can be reliably and easily grasped without being affected by the surrounding environment. The live line detection signal is wired or wirelessly transmitted or optically transmitted (infrared transmission or the like), and the live detection signal is received by the voltage detection main body.

  As described above, in the telescopic electric detector according to the present invention, since the electric detection result is displayed on the operator's hand side, grasping of the electric detection state is not affected by the length of the telescopic rod or the wind force. In other words, even if the extension rod is extended to the maximum and the voltage is detected, the live line condition of the measured wire is affected by the surrounding environment even if the voltage is detected in a contracted state while ensuring a safe approaching distance. It can be surely and easily grasped without any problems.

  The telescopic voltage detector of the present invention is a voltage detection main body provided on the side of the gripping portion when detecting a live line state of a measured wire such as a high-voltage and extra-high overhead line such as a transmission line or a low-voltage distribution line. This is a device for recognizing the state of voltage detection by causing the light-emitting unit of the light-emitting device to emit light.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external view of a main part of the telescopic electric detector according to the first embodiment, and is a front view showing a use state in which the telescopic rod is extended. FIG. 2 is a front view showing a state in which the telescopic rod is contracted. The state shown in FIG. 1 is a mode of use when detecting a live line state such as a transmission line stretched on a steel tower. When detecting a live line state of a measured wire such as a low-voltage distribution line, access safety It may be used in a contracted state after securing a distance.

  1 includes a telescopic rod 20, a power detection main body 40 provided on one end of the telescopic rod, and a probe 80 provided on the other end of the telescopic rod. Have at least.

The telescopic rod 20 has a multi-stage configuration, and includes an outer casing 20A and an inner casing 20B housed in the outer casing 20A. The length of the outer casing 20A is arbitrary, but is preferably about 1.0 to 1.5 m in consideration of handling during work. The length of the inner collar 20B is 1.0 to 1.5 m or less. When the inner collar 20B is composed of a plurality of inner collars, the total length can be 4 m or more. Even when detecting the live state of a high-voltage transmission line (including extra-high transmission line) stretched over a steel tower, this length is sufficient.
The telescopic rod 20 is light and difficult to bend, and is formed using a tough non-conductive material (such as a plastic reinforcing material).

  A grip portion 30 is provided on one end side (start end side) of the telescopic rod 20. The gripping portion 30 is a handle for an operator and is used when operating the telescopic rod 20. In order to stably hold the telescopic rod 20 in the gripping part 30, the upper gripping part 30A and the lower gripping part 30B are provided apart from each other in this example, and the voltage detection main body 40 is provided in the middle part. The gripping part 30 can also use the starting end itself of the outer casing 20A.

  The voltage detection main body 40 is a means for notifying that the measured electric wire is in a live line state when the measured electric wire is in a live line state. Includes a display element 44 as a light emitting element, a buzzer 45 as a notification element, and a power switch 47.

  A probe 80 serving as an electroanalyzer is provided at the other end portion (tip portion) of the telescopic rod 20. A live line detection signal transmission unit 50 is attached to the other end of the telescopic rod 20 and the end of the probe 80. The probe 80 and the transmission unit 50 are electrically connected.

A fastener 92 is attached to the front end portion of the outer casing 20A, and a fastener 94 is also attached to the lower end portion of the lower gripping portion 30B. Using these fasteners 92, 94, the shoulder band 90 is a telescopic rod. It can be attached to both ends of 20.
The electric detection work is performed in a state where the shoulder band 90 is placed on the back of the operator. By using the carrying band 90, the telescopic voltage detector 10 can be safely and reliably carried even at a work site (electric detection place) such as a steel tower. It goes without saying that it is necessary to confirm in advance whether the telescopic voltage detector 10 operates normally before performing the voltage detection work.

  FIG. 3 is a block diagram illustrating an example of a transmission unit. FIG. 4 is a block diagram showing an example of the voltage detection main body. This figure shows an example in which the live line detection signal generated by the transmission unit 50 is transmitted to the power detection main body 40 by radio.

  The probe 80 is connected to the live line detection unit 54 through a high resistance 52 (HR). When an induced current is induced in the probe 80, the live line detection unit 54 generates a live line detection signal. The live-line detection signal is supplied to the transmission unit 56, converted into a signal form suitable for transmission, and then fed to the antenna 58 and transmitted to the outside. Since the propagation length of the live line detection signal is about the length of the telescopic rod 20, it can be covered with extremely weak transmission power. Therefore, a small battery such as a button battery can be employed as the power supply 59 for the transmitter.

  In the voltage detection main body 40 shown in FIG. 4, the live line detection signal via the antenna 41 is received by the live line reception unit 42, and the reception signal is guided to the drive unit 43. The drive unit 43 applies a display signal to the display element 44 that is a light emitting element, and applies the drive signal to the notification element 45. A light emitting diode (LED) that emits red light or the like is used as the display element 44, and a buzzer is used as the notification element 45. A power switch 47 is provided in the vicinity of the power source 46 where a battery or the like is used, and is controlled so as to be in an operating state only during a voltage detection operation.

  When a live line detection signal is received, a display current flows through the display element 44, so that it lights up. The buzzer 45 is also driven. Since the display element 44 is turned on and the buzzer 45 is driven, it can be seen that the wire to be measured is in a live state, and therefore, measures such as stopping the work are taken. If the display element 44 is not turned on or the buzzer 45 is not driven, the deadline state can be confirmed and the work can be started safely.

  The display element 44 may not be always lit but may be displayed by blinking. A vibrator may be used instead of the buzzer 45. According to the vibrator, the vibration is transmitted to the operator's hand through the gripping part 30, so that the live line state can be recognized tactilely. Note that when a live line signal is received, the display element can be changed from a lighting state to a blinking state or an extinguishing state, or the buzzer can be changed from a driving state to a stopping state.

  As described above, according to the telescopic voltage detector 10 of the present invention, since the display element 44 is positioned at the operator's hand, the lighting state can be confirmed with certainty, and whether the measured wire is in a live line state or a dead line. It is possible to accurately grasp whether it is in a state. In addition, by driving the buzzer 45 (vibrator), the sound and vibration are transmitted to the gripping unit 30, and the electric detection state can be grasped from visual, auditory, and tactile senses. In addition, if the electric detection main body 40 is the grip part 30 side of the telescopic rod 20, the attachment position in particular is not restrict | limited.

  In the first embodiment, a transmission unit 50 is provided, a live line detection signal is generated from the induced current, this is transmitted to the power detection main body 40, and the display element 44 on the power detection main body 40 side is controlled to be turned on. However, the rotation of the electrostatic sensitive wind turbine can be used as a means for generating a live line detection signal.

  As shown in FIG. 5, the telescopic electric detector of the present embodiment attaches and fixes the electrostatic sensitive wind turbine 70 supported by the support rod 60 to the other end portion (tip portion) of the telescopic rod 20. The probe 80 is attached to the tip of the electrostatic sensitive wind turbine 70 shown in FIG.

  A first sensor 76 a is attached to the frame 74 of the electrostatic sensitive wind turbine 70, and a second sensor 76 b is attached to the blade 72. The pair of sensors 76a and 76b detects the rotation of the blade 72. The rotation detection signal is a pulse signal, which is used as a live line detection signal.

  The live line detection signal is sent to the voltage detection main body 40. The transmission form may be wireless, wired transmission, or optical transmission (for example, infrared transmission). In the case of wireless transmission, a transmission unit similar to that in FIG. 1 is provided on the electrostatic sensitive wind turbine 70 side. In the case of wired transmission, the live line detection signal is directly supplied to the live line receiving unit 42 shown in FIG. In the case of optical transmission using infrared rays or the like, the transmission unit is a transmission unit for optical transmission, and the light detection unit 40 is provided with a light reception unit. Will be supplied. Other configurations are the same as those in FIG.

  When a live line detection signal is received, a display current flows through the display element 44, so that it lights up. The buzzer 45 is also driven. By turning on the display element 44 and driving the buzzer 45, in addition to the recognition of the rotation of the electrostatic sensitive wind turbine 70, the live line state of the wire to be measured can be recognized visually or auditorily.

  Also in the case of the present embodiment, since the display element 44 is located at the operator's hand, the lighting state of the display element 44 can be confirmed with certainty, and whether the measured wire is in a live line state or a dead line state. Can be accurately grasped. Further, if the buzzer 45 (vibration type) is driven, the vibration is transmitted to the gripping unit 30, and the electric detection state can be reliably grasped from the visual sense, the auditory sense, and the tactile sense. Since the detection result is displayed on the operator's side, grasping the detection state is not affected by the length of the telescopic rod. In other words, even if the electric power is detected by extending the telescopic rod to the maximum or the electric current is detected in the shortest state, the live state of the electric wire to be measured can be reliably and easily grasped without being influenced by the surrounding environment.

  In the present invention, the probe is configured to be extendable and retractable, and by providing a voltage detection display element on the gripping portion side of the telescopic rod, the detection result can be easily and reliably recognized. Of course, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

It is a block diagram of the principal part which shows the expansion-contraction type electric detector of Example 1 of this invention, Comprising: It is a figure which shows the state which extended the expansion-contraction type rod. It is a figure similar to FIG. 1 which shows the state which retracted the expansion-contraction type rod. It is a block diagram which shows an example of a transmission part. It is a block diagram which shows an example of a voltage detection main body. 6 is a configuration diagram illustrating a telescopic voltage detector according to Embodiment 2. FIG. It is a block diagram which shows the electrostatic sensitive windmill of Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Telescopic type electric detector 20 Telescopic type rod 20A Outer rod 20B Inner rod 30 Gripping part 40 Electric detection main body 50 Transmission part 70 Electrostatic sensitive windmill 80 Electron detection (probe)
90 Back band 44 Light emitting element (display element)
45 Notification element (buzzer)

Claims (3)

A telescopic rod (20) provided with a gripping part (30) at one end and an electroanalyzer (80) attached at the other end;
A voltage detection body (40) provided on the gripping part side;
A light-emitting element (44) for electric detection display provided in the electric detection main body;
A live line detection signal transmission unit (50) provided on the electron detection side and connected to the electron inspection;
An extendable type voltage detector characterized in that, when the electroanalyzer detects a live line state of a measured electric wire, the light emitting element emits light based on the live line detection signal.   The telescopic detector according to claim 1, wherein the live line detection signal from the transmission unit (50) is transmitted wirelessly, wiredly, or optically. A telescopic rod (20) provided with a gripping part (30) at one end and an electroanalyzer (80) attached at the other end;
A voltage detection body (40) provided on the gripping part side;
A light-emitting element (44) for electric detection display provided in the electric detection main body;
An electrostatically sensitive windmill (70) provided on the other end of the telescopic rod,
A telescopic electric detector, wherein a rotation detection signal that detects a rotation state of the electrostatically sensitive wind turbine is transmitted as a live line detection signal to the voltage detection main body.

Images