JPH0494387A - Operating device for emergency elevator - Google Patents

Abstract

PURPOSE:To prevent apparatus in a cage from damaged due to a fire when an emergency elevator is lifted or lowered to a story on which a fire detector is operated by running the elevator while the cage door is kept opened, and opening manually an elevator stop door of the story on fire so that the stop door is closed by a self-closing force. CONSTITUTION:If a temperature at an elevator stop of a third story on fire exceeds a specified value, the primary fire fighting exclusive running is not started even if a fire fighter depresses a third story cage-calling button switch S3. When the fire fighter further closes a fire fighting running key switch K2, a relay F2 for secondary fire fighting running command is energized, and a cage calling detecting relay C3 is energized by depressing the third story cage calling button switch S3, to start the secondary fire fighting exclusive running. Since a relay AD for commandingly blocking a cage door from closing is then deenergized, the cage travels to the third story while the cage door is kept opened. Since the cage door is open when reaching the third story, an elevator stop door engageably driven usually by the cage door is closed and after the fire fighter manually opens the elevator stop door and gets off to the third story stop, the stop door is again closed by a self-closing device.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an operating device for an emergency elevator.

[Conventional technology]

In the event of a fire, the building will have a dedicated fire elevator for firefighters to extinguish and rescue the building. This fire-fighting elevator returns to the waiting floor by operating a fire-fighting switch installed in the landing, control room, etc. After that, a firefighter boards the elevator and drives it to the floor where there is a fire to extinguish the fire and carry out rescue operations.

[Problem to be solved by the invention]

However, in the conventional technology, when operating exclusively for firefighting, the firefighter alerts the firefighter with the car on the fire floor with the door open, so if the fire door that separates the landing area on the fire floor is deformed by the fire and does not close, high-temperature hot air This caused a problem in that the elevator equipment and signal wiring were burnt out, making the elevator unusable for subsequent firefighting and rescue operations.

The present invention aims to improve the above-mentioned drawbacks, and its object is to provide an emergency elevator operation system that can prevent damage to equipment inside the car on a high-temperature floor during dedicated firefighting operation.

[Means to solve the problem]

In order to achieve the above objective, a fire detector is installed at each floor landing entrance of the emergency elevator installed in the building, and the fire detector is activated when the temperature and amount of smoke exceed a predetermined value. When the emergency elevator is moved up and down to a floor in a firefighting operation, the elevator is operated with its car door open.

[Effect]

When a fire occurs on any floor of a building, one of the fire detectors installed on the fire floor among the fire detectors installed at each floor landing of the emergency elevator detects a predetermined temperature and sends a signal to the emergency elevator. On the other hand, when going up or down in an emergency elevator to the floor where the fire occurred, the car leaves the car door open based on the signal from the fire detector, and after arriving at the floor where the fire occurred, manually open the landing door and get off. Since the door closes with its own self-closing force, there will be no damage to equipment inside the elevator car due to fire.

〔Example〕

Embodiments of the present invention will be described below with reference to FIG.

FIG. 1 is a circuit diagram showing an embodiment of an emergency elevator operating system of the present invention.

Figure 1 is an example of a building with three floors.In the figure, (+)(-)
is a DC power supply, S1 to S3 are car call button switches, C3 to C
3 is a car call detection relay that is energized when the car call button switch S□~S3 is operated, C0a~C3a is a normally open contact of the call detection relay C~c3, K□ is a car (not shown)
The primary firefighting operation key switch Fl installed inside is a primary firefighting operation command relay that is energized when 1 is turned on to the primary firefighting operation key switch, and the call button switch S□~
Switch to primary fire-dedicated operation that can be operated only by s3. F1a is a normally open contact of relay F1 for primary firefighting operation command, K2 is a relay for secondary firefighting operation command installed inside the car (not shown), and is connected to the car door (not shown) or the landing door (Fig. (not shown) will switch to the second fire-only operation, which allows operation without closing the door.

T3 is installed in the landing on the third floor, and the temperature is a specified value, for example, 10
Fire detector contact, T1, which opens when the temperature exceeds 0℃.
T2 is the fire detector contact on the 1st and 2nd floors, and AFl is the primary firefighting operation command relay contact F1a, which is closed.
When the heel call detection relay contact C3a on the floor and the fire detector contact T3 on the third floor are closed, it is energized. In other words, the primary firefighting operation key switch is 1 and the car call button switch S on the operation destination floor.
Although □~S is turned on, if the fire detector contacts T□~T3 installed on the same floor as the operation target floor are open, the primary firefighting operation prevention command relay will not be energized. Therefore, if the fire is de-energized, the primary fire-dedicated operation will not start. AD is the aforementioned Sleigh AF dedicated to preventing primary firefighting operations,
This is a car door closing prevention command relay that is energized under the same conditions as , and if it is deenergized, the car door will not be electrically closed during fire-only operation.

Now, when a fire occurs, a firefighter opens the door on a waiting floor, for example, the first floor, and gets into the waiting car by an emergency call-back operation.

Then, when you turn on the primary firefighting operation key switch, 1
Next, relay F□ for firefighting operation command is energized, and contacts F and a are closed.

If the fire floor is the 3rd floor and the temperature of the landing is below the specified value, the 3rd floor fire detector contact T3 is closed, and when the firefighter presses the 3rd floor car call button switch S3, the 3rd floor car call is activated. By energizing the detection relay C1 and closing the contact C3a,
(+)-F, a-T.

A relay AF1 for issuing a primary fire prevention operation command is energized by the AF-(-) circuit. Also, (+)-F1a-'
The relay AD for commanding car door closing prevention is energized by the circuit r3 AD (), and the primary firefighting-only operation is started.

Next, if the fire floor is the third floor and the temperature of the landing is above the specified value, the third floor fire detector contact T3 is released, and even if the firefighter presses the third floor car call button switch S3, the primary fire A circuit for energizing relay AF1 for operation prevention command and relay AD for car door closing prevention command is not formed, and the first dedicated firefighting operation is not started. Therefore, when the firefighter further inputs 2 into the secondary firefighting operation key switch, the secondary firefighting operation command relay F2 is energized, and by pressing the third floor car call button switch S3, the car call detection relay C3 is energized. The second fire-fighting operation will begin. At this time, as described above, the car door closing prevention command relay AD is deenergized, so the car runs to the third floor with the car door open. When arriving on the 3rd floor, the car door is open, so the landing door, which is normally engaged and driven by the car door, remains closed, and after the firefighter opens the landing door manually and descends to the 3rd floor landing, he opens the landing door again. The door is closed by a self-closing device.

This prevents the landing door from remaining open during high-temperature fires.

〔Effect of the invention〕

According to the present invention, when an emergency elevator is used to go up and down to a floor where a fire detector installed at a landing on each floor of a building has been activated, the car door is kept open so that the landing door on the floor where the fire occurred is opened. By opening the door manually and closing it with self-closing force, it is possible to prevent damage to equipment inside the car due to fire.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing an embodiment of an emergency elevator operating system of the present invention.

Claims (1)

[Claims] (1) A fire detector that activates when the temperature and amount of smoke exceeds a predetermined value is installed at the landing entrance of each floor of the emergency elevator installed in the building, and the emergency elevator is installed on the floor where the fire detector activated. An operating device for an emergency elevator, characterized in that when the elevator is raised or lowered in a firefighting operation, the elevator is operated with the car door of the elevator in an open state.