JPS6131708B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an earthquake control system for elevators.

It has been proposed to install an earthquake detector in an elevator system or a building in which it is installed, and to stop the elevator at the nearest floor through its operation. Such earthquake control for elevators may give unnecessary anxiety to passengers in the car because no information is provided to them, and may also cause confusion. In addition, although it is necessary for safety that earthquake detectors operate with small vibrations, such earthquake detectors may operate due to vibrations from construction work near buildings, or may operate excessively, causing elevators to be unnecessarily affected by earthquakes. be controlled. This may give rise to a sense of distrust among passengers in the elevator.

The present invention aims to eliminate the above-mentioned drawbacks and provides an earthquake control system for elevators that can appropriately notify the situation when an earthquake occurs.

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

In the figure, 1 is a normally open contact with a limited return time, and is activated by a predetermined initial vertical tremor of an earthquake, and continues to operate as long as this tremor continues.
Detector, 2 is a second detector consisting of an earthquake sensor which is made of operating residual contacts and is activated by a predetermined horizontal motion after the initial stage of an earthquake, 3 is an OR gate, and 4 is an elevator car (not shown) A stop command device that issues a command to stop the car, 5 is a switch that operates when the car stops, 6 is an AND gate, 7
8 is a switch that operates when the car door is opened; 9 is an AND gate; and 10 is an earthquake alarm device. When installed and energized, it notifies the occurrence of an earthquake by text, voice, etc., such as ``An earthquake has been detected.'' Reference numeral 11 denotes a standby control device which turns on the lights of the car, opens the door of the car, and puts the elevator on standby with the elevator call still registered. Reference numeral 12 is a timer, and reference numeral 13 is an evacuation alarm device, which, when energized, is installed inside the car and notifies evacuation instructions such as ``It's an earthquake. It's going to stop. Please go outside.'' in text, voice, etc. . 14
is a NOT gate, 15 and 16 are AND gates, 17 is a return control device that turns off the standby control device 11 and returns the elevator to a normal state, and 18 is a pause device that turns off the car lights and closes the car door. Closed,
To cancel the registered call of the elevator and stop it.

If the car is currently being raised or lowered and either the first or second detector 1 or 2 operates, the OR gate 3 will generate an output, and the stop command device 4 will be energized to generate an output. As a result, when the car stops, switch 5 is closed and AND gate 6 outputs an output. As a result, the door opening command device 7 is energized and outputs an output to open the car door. Along with this, the switch 8 is closed and the AND gate 9 outputs an output. As a result, the earthquake warning device 10 is energized and the occurrence of an earthquake is notified within the car. In this manner, when an earthquake occurs, the notification is made after the car has stopped and the door has been opened, so that the earthquake will not be notified while the car is being raised or lowered, that is, inside the car, which is in a closed room, and passengers will not feel uneasy. In particular, when only the first detector 1 operates and its operating vibration is set to a small value, the frequency of malfunctions and excessive operations increases. To reduce the sense of anxiety given to passengers in such cases. I can do it.

Furthermore, the standby control device 11 is energized by the output of the AND gate 9, and the elevator enters the standby state. At the same time, a timer 12 is energized by the output of the AND gate 9, and outputs an output when a predetermined time limit has elapsed. If the first detector 1 is open at this time, that is, if the vibration has stopped and the return time limit of the first detector 1 has elapsed, the NOT gate 1
4 produces an output, and this and the output of the timer 12 cause the AND gate 15 to produce an output. This energizes the return control device 17 and the elevator returns to its normal state. At this time, the elevator is in a standby state by the standby control device 9, so immediately
Operation can be resumed without any extra effort, and this is particularly convenient for standby due to excessive operation of the first detector 1, etc. Note that if the NOT gate 14 does not output an output, that is, if the first detector 1 is closed, the standby state continues.

Furthermore, when the second detector 2 operates, in addition to being input to the OR gate 3, the evacuation notification device 13 is activated to notify the inside of the car of an evacuation instruction. Since the operation of the second detector 2 indicates the occurrence of a full-scale earthquake, the system immediately alerts passengers even when the car is being raised or lowered to urge passengers to prepare for evacuation and avoid causing unnecessary confusion. be able to. When the second detector 2 is activated, the timer 12 causes the AND gate 16 to output an output, energizes the stop device 18, and stops the elevator. Note that the energized deactivation device 18 is deenergized through manual operation after the elevator is inspected.

As explained above, the present invention allows the car to stop at the nearest floor and open the door when either the first or second detector is activated, and the earthquake alarm system is activated through the door opening of the car door. is energized to notify the occurrence of an earthquake, and when the second detector is activated, an evacuation order is notified to the inside of the car. As a result, in the event of an earthquake, appropriate information according to the situation is reported, thereby realizing an earthquake control system for elevators that prevents the feeling of anxiety felt by passengers in the car and the confusion among passengers.

[Brief explanation of the drawing]

The figure is a principal logic circuit diagram showing an embodiment of an elevator earthquake control system according to the present invention. 1...first detector, 2...second detector, 4...
Stop command device, 7...door opening command device, 10...earthquake alarm device, 13...evacuation alarm device.

Claims (1)

[Claims] 1. A first detector that operates when a predetermined initial tremor of an earthquake is detected, a second detector that operates when a predetermined vibration of an earthquake is detected, and either the first detector or the second detector described above. a stop command device that is energized through the operation to issue a command to stop the elevator car at the nearest floor; and a stop command device that is energized through the output of the stop command device to issue a command to open the door of the car. a door opening command device, an earthquake alarm device provided in the car and energized through the door opening of the car by the door opening command to notify the occurrence of an earthquake, and an operation of the second detector provided in the car. An elevator earthquake control system comprising an evacuation alarm device energized by an evacuation alarm system to notify evacuation.