JPH05319721A - Operation method of elevator - Google Patents

Abstract

PURPOSE:To protect a car and apparatuses provided around the car from being damaged on account of water-drainage or the like at the time of a fire by operating the car to the uppermost floor or a predetermined floor after operation completion, making it on standby. CONSTITUTION:When a fire starts, a fire alarm signal contact point is operated, and a relay F1 becomes ON, and a door closing command relay 101 becomes ON by means of settings FI1, 1F3, and a door is closed. Also, the throw-in condition of a relay 12 is realized, and the descent operation command relay 12 also becomes ON. The throw-in circuit of the relay 12 is retained by means of contact points 1E1, 121, 1F1, and a car is operated in descent to a first floor deceleration position and is stopped. At this time, as the relay 101 is OFF by means of contact points 1F3, 1A1, the door is opened, and the door is closed by door closing command. Next, the throw-in condition of a relay FIA is realized, and the uppermost floor operation command relay FIA becomes ON. Then, the throw-in condition of a relay 11 is realized, and the ascent operation command relay 11 becomes ON. The throw-in circuit of the relay 11 is retained by means of contact points 1 E2, 111, 5 F2, and car is operated ascendingly to a fifth floor deceleration position and is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator evacuation operation system in the event of a fire, and relates to an elevator installed in a building where the floor to evacuate is at the bottom when a fire occurs.

[0002]

2. Description of the Related Art According to Japanese Unexamined Patent Publication (Kokai) No. 58-52171, the operating range in the event of a fire is to drive a car to a predetermined floor and stop the car at the predetermined floor after the door is closed. However, no consideration was given to the harmful effects of the fire extinguishing work on the car and the equipment installed around the car.

[0003]

DISCLOSURE OF THE INVENTION The present invention is an operation system for protecting a car and equipment installed around the car from a damage caused by water discharge or the like in the event of a fire.

As the evacuation floor at the time of a fire in an elevator, the basement floor and the ground floor where a parking lot is provided are often designated.
In addition, in an apartment, office building, etc., the basement floor and the ground floor are generally the lowest floors of the building. In this case, the car will be stopped at the bottom floor until the fire restoration work is completed, so it is possible that the car will be flooded by water.

[0005]

[Means for Solving the Problems] In order to solve the above-mentioned problems, after the car is driven to the evacuation floor in the event of a fire, the car is evacuated above the evacuation floor in preparation for the operation after the fire is restored, and the operation is suspended. The means to adopt was adopted. According to this operating method, the above-mentioned object can be achieved.

[0006]

[Operation] When a fire occurs, the car is driven to the evacuation floor to open the door by a driving command from a fire alarm installed in the building. After the door is closed, a control circuit is configured and equipped to drive the car to a predetermined upper floor and stop the operation without opening the door.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a relay circuit diagram showing an elevator operation system in case of fire.

The car is evacuated to the first floor (lowermost floor) and the door is opened according to an operation command (operation of signal contacts) from the fire alarm. Next, after the door on the first floor is completed, the car is moved up to the fifth floor (top floor) and kept waiting with the door closed.

The character symbols in FIG. 1 will be described below.

FI: Fire alarm contact amplification relays FI ₁ , ₂ , ₃ : Normally open contacts of FI FIA: Operation command relays FIA ₁ , ₂ : Normally open contacts of FIA FIA ₃ : Normally closed of FIA Contact 10 ₁ : Normally closed contact of the relay that is turned on during operation 11: Ascending operation command relay 11 ₁ : Normally open contact of 11 11 ₂ : Normally closed contact of 11 12: Downward operation command relay 12 ₁ : 12 normally open Contact point 12 ₂ : 12 normally-closed contact point 101: Door close command relay 1A ₁ : Door open / close control relay normally open contact (ON when the door closing condition is established) 1B ₁ : Evacuation floor operation completion relay at fire (complete) 1C ₁ : 1st floor car destination floor relay normally open contact when button operation 1C ₂ : 2nd floor car interior destination floor relay normally open contact when button operation 1C ₃ : 3rd floor car interior destination floor normally open contact 1C of the relay which is turned on when a button operation _4: Normally open contact 1C of the relay which is turned on during floor-car destination floor buttons Operation 5: _5F-car normally open contacts 1D ₁ destination floor buttons operation when on relays, _{2, 3:} the door closing detecting switch actuation relay normally open Contact (contact of relay turned on when door is closed) 1E ₁ , ₂ : Normally closed contact of car deceleration position detection relay (contact of relay turned on from deceleration to elevator stop) 1F ₁ , ₂ , ₃ : 1 Normally closed contact of the floor zone detection relay 1F ₄ : 1: Normally open contact of the floor zone detection relay 2F ₁ , ₂ : Secondly closed contact of the second floor zone detection relay 3F ₁ , ₂ : Third floor zone Normally closed contact of detection relay 4F ₁ , ₂ : 4th floor floor zone normally closed contact of detection relay 5F ₁ , ₂ : 5th floor normally closed contact of floor detection relay When a fire occurs when the elevator is in normal condition Fire alarm signal contact (hereinafter referred to as fire alarm contact) And FI
The relay turns on. The fire alarm contact is a contact that is continuously operating until it is artificially reset. First basket
Explaining the case of not being in the floor zone of the floor, when the FI relay is turned on, the door close command relay 101 is turned on by the FI ₁ and 1F ₃ contacts, and the door is closed (the 1F ₃ contact is the 1st floor floor zone detection relay. It is a normally closed contact of, and the basket is 1
Does not work when not in the floor zone of the floor. Therefore, the 101 relay is turned on when the fire alarm contact FI ₁ operates. In addition, the closing conditions of 12 relays (FI ₃ , FI ₃
A ₃ , 1F ₁ , 1D ₂ , 11 ₂ contacts) are established, and the descending operation command relay 12 is also turned on. At this time, the ascending operation command relay 11 is the normally closed contact (2
Any one of F ₁ , ₂ , 3F ₁ , ₂ , 4F ₁ , ₂ , 5F ₁ , ₂ ) is operating, so it will not turn on.

The 12 relays hold the closing circuit by the 1E ₁ , 12 ₁ and 1F ₁ contacts, and the car descends to the 1st floor deceleration position (since the 11th relay turns off when the 1st floor deceleration position is passed by the holding contact). Then stop. At this time 101
The relay is turned off by the 1F ₃ and 1A ₁ contacts, so the door opens. Next, the 1A ₁ contact operates by the door close command, the 101 relay is turned on, and the door is closed. When the car is in the floor zone on the first floor, when the fire alarm contact relay FI is turned on, the door is opened / closed by the door opening / closing control relay 1A.

Next, the FIA relay closing conditions (FI ₂ , 1
_{F 4, 10 1, 1D 1} , 1B 1, contact) are turned on the top floor Operation Command FIA satisfied. (When the FIA relay is turned on, it is held by the FIA ₁ contact and remains on until the fire alarm contact FI ₂ is reset.) When the FIA relay is turned on, the car is waiting for the door to close on the first floor, so 11 relays The closing condition (FIA ₂ , 5F ₂ , 1D ₃ , 12 ₂ contacts) is satisfied and the rising operation command relay 11 is turned on.

In the 11 relay, the closing circuit is held by the 1E ₂ , 11 ₁ and 5F ₂ contacts (since the holding contact causes the 11 relay to turn off when the fifth floor deceleration position has passed) the car has 5
Ascend to the floor deceleration position and stop. At this time, since the 101 relay is turned on by the FI ₁ and 1F ₃ contacts after passing through the floor zone on the first floor, the door remains closed. After the car stops on the 5th floor, the closing circuit of the 12 relays is cut off by the FIA ₃ contact, so the car remains in the standby state until the fire alarm contact is reset with the door closed.

This circuit uses a circuit for selecting an up / down operation command at the time of registering the destination floor button in the car.
After the operation to the evacuation floor, the car call relay contact and the FIA ₂ contact on the floor above which the vehicle is on standby are connected in parallel.

The FIA ₂ can also be used when waiting on a floor other than the 5th floor.
Contact the car call relay contact (2C ₁ , 3C ₁ , 4
If it is connected in parallel with C ₁ ), an operating circuit similar to the above is obtained.

[0017]

According to the present invention, it is possible to minimize the adverse effects (especially car flooding) on the car and the equipment installed around the car due to fire extinguishing and water discharging work. In addition, the maintenance and inspection of the elevator that will be performed after the fire is restored will be easier, and maintenance workability will be improved and costs will be reduced. Further, according to the present invention, since the function is exhibited only by maintaining the operation circuit of the elevator, there is an economical advantage.

[Brief description of drawings]

FIG. 1 is a relay circuit diagram of an elevator operation system according to the present invention.

[Explanation of symbols]

FI ... Fire alarm contact amplification relay, FI ₁ , ₂ , ₃ ... FI normally open contact, FIA ... Operation command relay to the top floor in case of fire, FI
A ₁ , ₂ ... FIA normally open contact, FIA ₃ ... FIA normally closed contact, 10 ₁ ... Relay normally closed contact that is on during operation, 1
1 ... Ascending operation command relay, 11 ₁ ... 11 normally open contact, 1
1 ₂ ... 11 normally closed contacts, 12 ... descending operation command relay, 1
2 ₁ … 12 normally open contacts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuaki Takano 2-832, Horiguchi, Katsuta-shi, Ibaraki Hitachi System Plaza Katsuta Hitachi Mito Engineering Co., Ltd. (72) Inventor Eiji Okabe 1070 Ige, Katsuta-shi, Ibaraki Prefecture Address: Hitachi Ltd., Mito Factory

Claims (1)

[Claims] 1. In an elevator equipped with an operation function of driving a car to a predetermined floor and standing by in the event of a building fire, after the operation is completed, the car is driven to the top floor or a predetermined floor and waits. An elevator operation method characterized by the following.