JPS6122673B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement in a device for operating an elevator during an earthquake.

In order to protect elevators from earthquakes and ensure the safety of passengers, it has been proposed to detect earthquakes using earthquake sensors and control the operation of elevator cars. In other words, when the initial tremors of an earthquake are detected, the car calls and landing calls that have been registered up to that point are canceled, and future call registrations are blocked.
Stop the car at the nearest floor. Then, the car door and the landing door (hereinafter simply referred to as the door) are opened, a message indicating that there is a risk of an earthquake occurring inside the car is displayed, and the passengers are allowed to exit the car. This makes it possible to protect passengers in the car from danger before the main vibration of the earthquake arrives.

However, if the initial microtremor detector remains in operation due to a failure, malfunction, etc., the car continues to wait for the door to be opened after stopping at the nearest floor. Therefore, when the main vibration does not arrive or when the earthquake ends, the car cannot return to normal operation, causing great inconvenience to users. There is a possibility that the above-mentioned malfunction of the initial microtremor detector may occur when piling work or the like is continuing in an adjacent building.

The present invention aims to improve the above-mentioned problems, and provides an elevator earthquake operation device that does not cause inconvenience to users even if the initial microtremor detector is maintained in an operating state due to failure or malfunction. With the goal.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, (+) and (-) are DC power supplies, 1 is an initial microtremor detection contact that closes when it detects the initial tremor of an earthquake, and opens after a certain period of time when the initial tremor ends, and 2 is an initial microtremor detection relay. 2a and 2b are the normally open contacts, 3 is the main vibration detection contact that closes and is held when detecting the main vibration of an earthquake, 4 is the main vibration detection relay, 4a is the normally open contact, 5 is the earthquake control In the relay, 5a is its normally open contact, 5b to 5d are also normally closed contacts, 6 is a stop condition circuit that closes when the stop condition by car call and hall call is satisfied, and 7 is a stop command to the car when energized. 8 is a changeover switch, 9 is an automatic operation command relay, 9a is its normally open contact, 10 is an open contact while the car is running, and closes when a certain period of time has passed after the car has stopped and the door has opened. Time relay contact for setting door opening time, 1
1 is a running relay contact that closes while the car is running and opens when the car stops; 12 is a door open confirmation relay contact that closes when the main vibration has arrived and the car is open; 13 is a relay contact that closes when the car is open. a door control relay which issues a door close command when energized and a door open command when deenergized; 14 is a floor selection circuit constituted by a well-known floor selection machine and which emits an output corresponding to the car position; 15;
A to 15n indicate the indicator lights for the 1st to nth floors of the landing position indicators on each floor (representatively indicates the 1st floor).When 16 is energized, it operates after a certain period of time, and when it is deenergized, it immediately operates. 16a is the normally closed contact, 16b and 16c are the normally open contacts, 17 is the fault release switch installed in the manager's room, and 18 is the initial microtremor detector failure indicator light. It is.

Under normal conditions, the automatic operation command relay 9 is energized by the (+)-8-5b-9-(-) circuit, and the contact 9a is closed. Therefore, the floor selection circuit 14 emits an output depending on the car position, and one of the indicator lights 15a to 15n of the hall position indicator is lit. On the other hand, by energizing the automatic operation command relay 9, a well-known elevator operation is performed. and,
When the car approaches the called floor and the stop condition is satisfied, the stop condition circuit 6 is closed, the stop determination relay 7 is energized, a stop command is issued, and the car stops at the called floor.

Now, while the car is running in fully automatic operation, when the initial tremor of an earthquake occurs and the initial tremor detection contact 1 closes, the initial tremor detection relay 2 is energized, and the contact 2
a and 2b are closed. The earthquake control relay 5 is energized by closing the contact 2a, the contact 5a is closed, and the contacts 5b to 5d are opened. By closing the contact 5a, the stop determination relay 7 is energized, and the car stops at the nearest floor. While the car is running, the time relay contact 10 for setting the door opening time is open and the running relay 11 is closed, so (+)-11-13-
The door control relay 13 is energized by the (-) circuit. When the car stops, the running relay contact 11 opens, so the door control relay 13 is deenergized and the door opens. At this time, as described above, an earthquake warning (not shown) is displayed inside the car, so the passengers are forced to evacuate outside the car. Moreover, since the automatic operation command relay 9 is deenergized and the contact 9a is opened by opening the contact 5b, all the indicator lights 15a to 15n are turned off.

After that, when the main vibration arrives, the main vibration detection contact 3 is closed and held, so the main vibration detection relay 4 is energized, and the contact 4a is closed and held. With this, the earthquake control relay 5 is also held. When a certain period of time has elapsed after the door was opened, the time relay contact 10 closes. In addition, since the door open confirmation relay contact 12 is also closed, (+)-10-12
-13-(-) circuit causes door control relay 13
is energized, the door closes, and the car stops operating with the door closed.

If an initial microtremor is detected but the main vibration does not arrive after a certain period of time, contact 1 will open.
Initial microtremor detection relay 2 is deenergized, contacts 2a are opened, earthquake control relay 5 is deenergized, contacts 5a are opened, and contacts 5b to 5d are closed. The automatic operation command relay 9 is energized by closing the contact 5b, and automatic operation is resumed. At the same time, since the contact 9a is closed, the indicator lights 15a to 15n corresponding to the floor where the inner car is located are lit. This will let you know that the elevator is ready for use. Also, contact 5
By the closure of c, (+)-10-5c-13-
The door control relay 13 is energized by the (-) circuit, the door is closed, and the car can run normally.

Next, suppose that the initial microtremor detector fails and contact 1 remains in contact (assuming that the main vibration does not arrive).As a result, contact 5c of earthquake control relay 5 remains open. , the door control relay 13 is not energized, the door does not close, and the car cannot be operated. On the other hand, when a certain period of time elapses after the contact 2b is closed, the time relay 16 operates and is self-retained by closing the contact 16b. Further, the contact 16a is opened and the contact 16c is closed. By opening the contact 16a, the initial fine movement detection relay 2 is deenergized. As a result, the earthquake control relay 5 is deenergized and (+)-10-5c-13-
Since the door control relay 13 is energized by the (-) circuit, the door is closed and the car can be operated. Further, when the contact 16c is closed, the failure indicator light 18 lights up to notify the manager of the failure.

Note that it is clear that if the main vibration arrives at this time, the operation as described above will be performed.

When the initial microtremor detector is repaired by the illumination of the failure indicator light 18, the administrator turns on the failure release switch 17.
to open. Now, the time relay 16 is deenergized and restored, the contact 16a is closed, and the contacts 16b and 1
6c is opened and returns to the normal state.

In the embodiment, the case of one car has been described, but the present invention can also be applied to a case of multiple cars.

Further, the set time of the time limit relay 16 may be selected to be sufficiently longer than the time during which the initial tremor continues in a normal earthquake.

Although the failure indicator light 18 is provided in the manager's room, it can also be provided in the landing, inside the car, etc.

As explained above, in this invention, when the initial microtremor detector continues to operate for more than a predetermined time, the car operation is returned from earthquake operation to normal operation. Even if this happens, it is possible to prevent elevator users from being inconvenienced.

[Brief explanation of the drawing]

The figure is a circuit diagram showing an embodiment of an elevator operation device during an earthquake according to the present invention. 1... Initial microtremor detection contact, 2... Initial microtremor detection relay, 5... Earthquake control relay, 7... Stop decision relay,
9... Automatic operation command relay, 13... Door control relay,
16...Timed relay for detecting initial microtremor failure.

Claims (1)

[Claims] 1 Initial tremor detector that detects the initial tremor of an earthquake,
An operation switching circuit that switches the car operation from normal operation to seismic operation when this initial microtremor detector operates, and a predetermined time obtained as the time taken by the initial microtremor detector to reach the normal main vibration from past actual measurements. An elevator earthquake operation device comprising an operation recovery circuit for returning the car from the earthquake operation to the normal operation when the above operations are continued.