JP2573627Y2 - Alarm device - Google Patents

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 informing an emergency in a mine in shield or tunnel construction.

[0002]

2. Description of the Related Art In the construction work of water supply and the like, it is required by regulations to provide an alarm system when the distance from a wellhead to a face reaches 100 m. However, such alarm devices are few on the market as products, and are currently manufactured on a site basis. Conventional alarm equipment supplies power from the ground via a cable, and in most cases, it becomes inoperable at the time of a power failure or when a power cable is disconnected.

[0003]

[Problems to be solved by the present invention] The above-mentioned conventional alarm device has the following problems. In the conventional alarm device, the alarm device does not operate when the power supply from the ground via a power cable is cut off. For this reason, if the power cable is disconnected due to a sudden disaster or the like, it is not possible to notify the underground worker of the danger by the alarm device from the ground. Therefore, there is a danger of causing a catastrophic event involving the life of an underground worker due to a defect in the alarm device.

[0004]

[Purpose of the present invention] The present invention has been made in view of the above points, and the purpose of the present invention is to reliably operate even if a power supply and a communication cable normally used due to a disaster are disconnected. An object of the present invention is to provide an alarm device for transportation .

[0005]

[Means for solving the problems] That is, the present invention
Alarm siren, battlelight, call siren on body box
, Battery power, alarm activation terminal, call siren input
Terminal, AC indicator, DC indicator, control panel and handle
When the external power supply stops, the control panel
Switch the external power line to the standby power line
Supply the battery power and turn off the AC indicator
The circuit for lighting the DC indicator and the alarm activation terminal are open
, Alarm siren and battry by relay circuit
Circuit and the call input terminal are short-circuited
And a circuit that activates the call siren by the relay circuit.
It is an alarm device provided .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. <A> Configuration of alarm device FIG. 1 shows an alarm device A according to the present invention. The alarm device A includes a main body box 1 and a switch box 2.
As shown in FIG. 2, the alarm devices A are installed on the ground and at various locations in the mine, and the alarm devices A and A are connected by a cable 3. Hereinafter, each part will be described in detail.

<B> Main Box The main box 1 is connected to the cable 3 and receives power from the ground. The main body box 1 has a control panel 1 inside.
1, a transformer 12, an AC / DC converter 13, a battery 14, an alarm siren 15, and a call siren 16 are housed respectively, and a patrol light 17 and a handle 18 are installed at the upper part. As shown in FIG. 3, an AC indicator light 19a and a DC indicator light 19b are provided on the door of the main body box 1. The control panel 11 includes a control circuit 10 described later inside.
And controls the operation of the alarm siren 15, the calling siren 16, and the patrol light 17. Further, the control panel 11 is provided with an operation check switch 11a. The transformer 12 transforms an AC power supplied by the cable 3. The AC / DC converter 13 is a device that converts an AC power source transformed by the transformer 12 into a DC power source. The battery 14 is a backup power supply for the alarm device A, and is normally charged by a power source supplied from the ground. When the power source is not supplied from the ground to the alarm device A due to a disconnection of the cable 3 or the like, the alarm device A is used. Acts as a power source for The call siren 16
Is connected to an underground communication telephone 4 separately provided from the alarm device A. The handle 18 is provided for transportation when the main body box 1 moves.

<C> Switch Box The switch box 2 comprises a main body box 1 and a cable 3
And an emergency alarm button 21, a switch group 22, and a warning lamp 23 are provided. Emergency alarm button 21
Are buttons for simultaneously activating the alarm siren 15 and the patrol light 17 at each location. The emergency alarm button 21 is constituted by a lock-type switch, and when it is pressed once, each part goes into an alarm state, and when it is pressed again, the alarm state is released.
The switch group 22 is connected to the underground communication telephone 4 and, by selecting a switch, the call siren 1 at a designated place.
Call 6 and call siren 16 at each location
Can be sounded all at once.

<D> Control Circuit The control circuit 10 is supplied with power from an AC / DC converter 13 or a battery 14, and controls an alarm siren 15, a patrol light 17, a call siren 16, and the like. The control circuit 10 is configured, for example, as shown in FIG. The call siren input terminal 10a is connected to a switch group 22 in the switch box 2. The alarm operation terminal 10b is connected to the emergency alarm button 21 in the switch box 2, and is connected to the adjacent alarm device A via the cable 3 in series with the emergency alarm button 21. Each of the relays RL1 to RL4 includes a control section and a contact section, and a diode connected in parallel with the control section is provided for suppressing a surge voltage.

<E> Cable The cable 3 connects between the alarm devices A and A. The cable 3 has an underground communication telephone 4 in addition to the AC power supply.
It consists of wiring for alarm, alarm and call siren.

[0011]

Next, each function of the alarm device A of the present invention will be described based on the control circuit 10 of FIG. <A> Abnormality detection function The alarm operation terminal 10b is connected in series with the alarm operation terminal 10b of the adjacent alarm device A, and forms one closed circuit. For this reason, if one part of the cable 3 is disconnected, the alarm operation terminals 10b of all the alarm devices A on the ground and in the pit are disconnected.
Becomes open. When the alarm operation terminal 10b is opened, the relay RL3 in the control circuit 10 is turned off,
As a result, the relay RL4 is turned on, and power is supplied to the alarm siren 15 and the patrol light 17. Therefore, the alarm siren 15 in all the alarm devices A on the ground and in the pit sounds, and the patrol light 17 rotates.

<B> Alarm Function When the emergency alarm button 21 of the switch box 2 is pressed, the alarm operation terminal 10b is opened. Turns on.

<C> Call Function When a switch at a designated place is selected and turned on by the switch group 22 of the switch box 2, the call siren input terminal 10a of the alarm device A at the designated place is short-circuited, and the control circuit 10 Since the relay RL2 is turned on, the call siren 16 operates. In the switch group 22, there are also provided switches connected to the call siren input terminals 10a of all the alarm devices A on the ground and in the mine. When the switches are turned on, all the alarm devices A on the ground and in the mine are turned on. Is activated.

<D> Power supply switching function Normally, the power supply in the alarm device A is performed by the AC / DC converter 13, and the battery 14 is always charged by the diode D1 and the resistor R1 in the control circuit 10. If power supply from the outside is cut off due to a power failure, A
The output of the C / DC converter 13 stops. For this reason,
Since the relay RL1 of the control circuit 10 is turned off and the output terminal of the battery 13 is connected to the power supply line of the control circuit 10, the battery 13 supplies power to the control circuit 10 instead of the AC / DC converter 13. Then, the lit AC indicator light 19a is turned off and the relay RL1 is turned off, so that the lit DC indicator light 19b is turned on. Therefore, the abnormality of the external power supply can be immediately confirmed by turning on the DC indicator light 19b.

<E> Operation check function Normally, by pressing the operation check switch 11a, power is supplied to the alarm siren 15 and the patrol light 17,
The operation of the alarm siren 15 and the patrol light 17 in the alarm device A at that location can be confirmed.

[0016]

[Effects of the Invention] The present invention is as described above, and the following effects can be obtained. <B> Even if the power supply from outside is cut off due to a power outage,
The power is supplied to the alarm device by the built-in battery, so that the alarm device does not lose its function.

<B> If one of the cables connecting the alarm devices is disconnected due to an emergency such as a disaster,
Immediately the alarm siren and patrol light are activated and an alarm is issued. Therefore, workers at various locations in the mine can immediately confirm the emergency and can evacuate quickly.

<C> An alarm at the time of an emergency is given audibly and visually by an alarm siren and a patrol light. Therefore, it is possible to reliably notify the underground worker or the like of the alarm.

<D> If an underground communication telephone is connected, it can be used as a call siren.

[Brief description of the drawings]

FIG. 1 is a perspective view of an alarm device.

FIG. 2 is an explanatory diagram of an installation state of an alarm device.

FIG. 3 is a perspective view of a main body box of the alarm device.

FIG. 4 is an explanatory diagram of a control circuit.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G08B 23/00 510 G08B 23/00 520

Claims (1)

(57) [Scope of request for utility model registration] 1. An alarm siren and a pattry in a main body box.
, Call siren, battery power, alarm activation terminal, call
Output siren input terminal, AC indicator, DC indicator, control panel
When the supply of external power stops , the control panel
Switch the external power supply line to the backup power supply line
Supply terry power and turn off the AC indicator to DC
The circuit that turns on the indicator light and the alarm activation terminal are open.
Then, the alarm siren and the battlelight are activated by the relay circuit.
When the activated circuit and the call input terminal are short-circuited,
A circuit in which the call siren is activated by the Ray circuit
There is an alarm device.