JPH0670420A - Alarm device for giving warning against approach to hazardous area - Google Patents

Abstract

PURPOSE:To prevent accidents previously by giving warning against approach of a worker to hazardous area on a hot-line side, in case of working on a steel tower for a high-voltage transmission line. CONSTITUTION:The alarm device is composed of a fitting part 16 for fixing an alarm device 1 to a steel tower, and a device body 10 fixed to the fitting part 16. In the device body 10, sensors 11 and 12 such as infrared sensors, etc., for detecting a worker entering a fixed area on the steel tower, alarm members comprising a buzzar 13, a lighting device 14, etc., to be operated by the detection of the sensors 11 and 12, and dry cells 15 of a power source for them are assembled into a united body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alarm device for warning that a worker has accidentally approached a prohibited area during work, and particularly to a high-voltage power transmission line for which only one power transmission line is cut off. When working on a steel tower, it is possible to prevent workers from accidentally entering the dangerous area on the live line side by detecting that the live line side to which electricity is being transmitted is approaching and issuing an alarm. A suitable alarm device for warning the approach to a hazardous area.

[0002]

2. Description of the Related Art Conventionally, when working on a steel tower of a high-voltage power transmission line, it is not possible to completely stop power transmission. Therefore, work is performed with the non-working side in the power transmission state (live line). Work is being performed while stopping power transmission on the other side and being careful not to inadvertently enter the dangerous area on the live line side. In that case, in order to clearly indicate the hot-line prohibited area, for example, an insulating rod with a yellow and black (or red and white) stripe pattern as shown in FIG. As shown in Fig. 6, the material (blocking rod) is attached to the outside of the main pillar on the live line side of the steel tower with strings or fasteners, thereby clearly indicating the upper, lower, left, and right sections of the dangerous area on the steel tower. is doing.

[0003]

However, when the danger area is clearly indicated by the conventional blocking rod as described above, there are several working points in the vertical direction of the steel tower, and there is a restricted area corresponding to the work area. It may extend vertically. And in such a case, many blocking bars must be installed on the tower in a number of places in order to clearly indicate all the restricted areas. Therefore, it is necessary to spend a considerable amount of labor and time for the installation and removal work, and there is a risk that the installation may be partially forgotten.

In addition to the above-mentioned problems, even if the danger area is definitely displayed by the blocking rod, there are cases where the user concentrates on the work and accidentally approaches the danger area or intrudes into the danger area. There are many things to do. However, even if such a situation occurs, there is no means to make the worker aware of it, and it may be extremely dangerous, and the worker constantly displays the danger area during the work. I cannot neglect my attention.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problem of the dangerous area indicating means on the steel tower of the conventional high voltage power transmission line. More specifically, a sensor for detecting intrusion into a certain area on a steel tower and an alarm activated by the detection of the sensor are integrally provided and mounted on the steel tower to cover a wide dangerous area. It is suitable for use on the tower of a high voltage transmission line, which can prevent accidents by alerting the worker when an operator approaches a dangerous area. , It is intended to provide an alarm device for warning the approach to a dangerous area.

[0006]

In order to solve the above-mentioned problems and achieve the object thereof, an alarm device for warning the approach to a dangerous area of the present invention is fixed on a tower, It is composed of a sensor for detecting entry into a certain area on the steel tower and an alarm member activated by the detection of the sensor. Further, in the alarm device of the present invention having such a structure, in order to make the structure simple and easy to mount, the alarm device is fixed to the mounting part for fixing it on the tower. And a sensor, an alarm member, and a power source for them are integrally incorporated in the main body.

With the above-mentioned structure, the alarm device for warning the approach to the dangerous area of the present invention is provided when the worker enters the boundary area between the working area and the off-limits area on the tower. In addition, it can be installed on the tower so that the sensor can detect it. Then, when the worker approaches the restricted area and enters the boundary area, the sensor detects this, and an alarm such as a buzzer is activated in conjunction with the detection of the sensor, and the worker approaches the restricted area. Warn that Therefore, the worker can easily recognize that he / she has approached the restricted area without checking the danger display during the work. Further, in the present invention, since the sensor and the alarm member can be integrally incorporated in the main body fixed to the mounting portion together with the power source for them, it can be mounted on the steel tower by the mounting portion. The fixing and the removal can be performed very easily in a short time only by the operation of fixing.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an alarm device for warning the approach to a dangerous area according to the present invention will be described below with reference to an embodiment shown in the drawings. As shown in FIGS. 1 and 2, in the alarm device 1, one end of a horizontally long main body 10 is fixed to a mounting portion 16 configured to hold an angle member 20 of a steel tower with a screw or the like. There is. In the main body 10 of the alarm device 1, a transmitter 11 and a receiver 1 of an infrared sensor are provided.
2 is housed with the detection window facing upward, and is adjacent to the infrared sensors 11 and 12, and is a buzzer 1 as an alarm member.
3 and the lighting fixture 14 are stored. As the lighting device, for example, a halogen lamp that can output strong light that can be confirmed even in the daytime and can regulate the direction of the light can be used.

Further, a battery 15 serving as a power source for the infrared sensors 11 and 12, the buzzer 13 and the lighting fixture 14 is housed adjacent to the lighting fixture 14. Then, when the infrared sensor 11, 12 outputs a signal for detecting the entry of the worker, the buzzer 13 and the lighting fixture 14
The control circuit of the device can be configured to operate. Further, in the device 1 of the present invention, the arrangement position of the detection means such as an infrared sensor can be set at an arbitrary interval, and one of the two sensors is used as a light emitting member and the other sensor is used. Can be used as the light receiving means. In addition to the above configuration, it is also possible to configure the two sensors as independent detection members and make the detection directions of these two sensors slightly different so that the detection range can be set wider.

Next, a usage state of the alarm device 1 configured as described above will be described with reference to FIGS. 3 and 4. First, in the steel tower 2 of the high-voltage power transmission line, when only one of the power transmission lines on one side 22 is put into a power failure state and the work is performed, The alarm device 1 of the present invention is installed so as to be located below the boundary region 23. And the alarm device 1
Is fixed on the steel tower via the mounting portion 16 with the detection windows of the infrared sensors 11 and 12 facing upward so that an object that has entered the boundary area 23 covering the dangerous area can be detected. Therefore, when the worker enters the boundary area 23 near the dangerous area on the hot line side, the infrared sensors 11 and 12 of the alarm device 1 sense this, and the buzzer 13 that operates in conjunction with this sounds. Alternatively, the halogen lamp of the luminaire 14 emits light so that the operator can be warned of this.

As shown in FIGS. 3 and 4, the boundary area 23 that covers the dangerous area by the warning device 1 can be set as an area of any size in the width direction and the height direction of the tower. However, it is also possible to arrange a plurality of alarm devices at work positions of a steel tower and set an alarm area at each work place. Then, when the alarm device is installed near the work place on the tower, it becomes possible for the operator to easily recognize the sound and light of the alarm output from the alarm device. .

In the above-described embodiment of the present invention, the alarm device for warning the approach to the dangerous area has been described based on one embodiment, but the present invention is not limited to this. For example, it is not always necessary to provide both the buzzer 13 and the luminaire 14 as an alarm member, and it suffices to appropriately use the buzzer 13 and the lighting device 14 including other means. The sensor is also limited to infrared rays. is not. In addition, the sensor and the alarm member are not integrated, but only the sensor is installed at a position where the entire boundary area between the work area and the dangerous area can be detected, and an alarm output member that operates by the detection of the sensor is provided. It is also possible to configure a plurality of them to be installed at appropriate points in the work area. Furthermore, when the detection area of the infrared sensor is narrower than the boundary area, multiple sensors are installed for any angle material of the tower, and an alarm device is placed in correspondence with those sensors. By doing so, a large border area can be provided so that it can be covered by the device.

[0013]

As to the alarm device for warning the approach to the dangerous area according to the present invention, a worker is provided with a sensor for detecting an intrusion into a certain area on a steel tower and an alarm activated by the detection of the sensor. Since it notifies the approach to the dangerous area, it is possible to cover a large area with one device as compared with the conventional dangerous area indicating device such as a blocking bar. Therefore, it is not necessary to install a plurality of devices over the entire section of the hazardous area, and the extra labor and time are not required for removing the devices after the work.
In addition, since it alerts the worker to the fact that the danger area is approaching, the operator can concentrate on the work without being distracted by the indication of the danger area during the work and accidentally enter the danger area. It is possible to prevent accidents due to accidents.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the configuration of an apparatus of the present invention.

2 is a side view of the embodiment shown in FIG. 1. FIG.

FIG. 3 is an explanatory diagram showing a usage state of the device of the present invention.

4 is a top view of the explanatory view shown in FIG. 3. FIG.

FIG. 5 is a front view showing a conventional dangerous area display device.

FIG. 6 is an explanatory diagram showing a usage state of the conventional dangerous area display device shown in FIG.

[Explanation of reference numerals] 1 alarm device, 10 main body, 11.12 sensor, 13 buzzer, 14 lighting equipment, 15
Battery, 16 mounting part.

Claims (4)

[Claims] 1. A hazardous area characterized by comprising a sensor fixed on a steel tower and detecting an intrusion into a certain area on the steel tower, and an alarm member activated by the detection of the sensor. An alarm device to warn of approach. 2. The alarm device comprises a mounting portion for fixing on a steel tower and a main body fixed to the mounting portion, and a sensor, an alarm member, and a power source for them are provided in the main body. An alarm device for warning of approach to a hazardous area according to claim 1, characterized in that it is integrally incorporated. 3. An alarm device for warning the approach to a danger zone according to claim 1, wherein the sensor is an infrared sensor. 4. The alarm member is a buzzer or a lighting device,
Alternatively, the alarm device for warning the approach to the dangerous area according to claim 1 or 2, comprising a buzzer and a lighting device.