JPH0316869Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an elevator control device, and particularly to operation control during an earthquake.

[Conventional technology]

Earthquake operation has been proposed in which the occurrence of an earthquake is detected, the elevator is stopped at the nearest floor, the doors are opened, and the operation is subsequently suspended. It is desirable for such earthquake operation to detect the initial vibration of an earthquake and immediately perform earthquake operation, and to stop the elevator before the main vibration of the earthquake occurs so that passengers in the elevator can evacuate.

First, a conventional elevator control device according to FIG. 2 will be explained.

1 is a stop preparation contact that closes when a car or hall call is made, 2 is a service disconnect switch that closes to disconnect service on a specific floor, and 3 is a contact from a predetermined distance before the floor where the service is to be disconnected from that floor. 4 is a first earthquake sensor that closes when the seismic intensity exceeds a first predetermined value; 5 is a second earthquake sensor that is larger than the first earthquake sensor; The second earthquake sensor 6, which closes when the seismic intensity exceeds a predetermined value, is a stop determination relay for properly landing the car on the floor.

Next, the operation will be explained.

First, while the service disconnection switch 2 is open, the stop determination relay 6 is not energized by the switches 2 and 3 because the car position detection switch 3 is opened when the car approaches the service disconnection floor.

Therefore, if the first or second earthquake sensor 4, 5 is closed during the above operation, (+)-sensor 4-relay 6-(-) or (+)-sensor 5-relay 6-
The stop determination relay 6 is energized by the (-) circuit.

[Problem to be solved by the invention] Since the conventional elevator control device is configured as described above, even if the first or second earthquake sensor operates on the above floor during the service disconnection operation, the elevator car will be stopped. Since the train is always decided to stop, there is a possibility that passengers will get off at the boarding hall, and there is a risk of theft or passengers being left behind at the boarding hall.

This idea was made to solve the problems mentioned above, and is an elevator control system that prevents elevators from stopping on the above floors if the earthquake is strong enough to pass through the service cutoff when an earthquake occurs. The purpose is to obtain.

[Means for solving problems]

The elevator control device according to this invention is designed to prevent the elevator from stopping at a service cut-off floor even if the earthquake sensor operates if the earthquake is less than a second predetermined value.

[Effect]

The elevator control device in this invention is the second
If the seismic sensor operates below a second predetermined value, the seismic sensor will not be stopped on the service floor, and if the seismic sensor operates above a second predetermined value, the seismic sensor will be stopped on the service floor as well.

〔Example〕

An embodiment of this invention will be described below with reference to FIG. 1, in which the same parts as in FIG. 2 are denoted by the same reference numerals.

In the configuration shown in FIG. 1, the first earthquake sensor 4 is connected in parallel to the stop preparation contact 1 and connected in series to the car position detection switch 3. A second earthquake sensor 5 is connected in parallel to the series body.

In the configuration shown in FIG. 1, when the car approaches the service disconnection floor with the service disconnection switch 2 open, the car position detection switch 3 opens. At this time, even if the first sensor 4 is opened, the stop determination relay 6 is not energized by the service cutoff switch 2 and the car position detection switch 3. Also, in the above state, when the second sensor 5 is closed (+)
- Sensor 5 - Relay 6 - The stop decision relay 6 is energized by the (-) circuit.

Therefore, even if the first earthquake sensor, which has a lower detected seismic intensity than the second seismic sensor that needs to be stopped even on the service floor, is activated, it cannot be stopped on the service floor, and theft or passenger This eliminates the problem of people being left behind at the boarding station.

[Effect of idea]

As described above, according to this invention, even if the first earthquake sensor operates, it is configured so that it does not decide to stop on the service cut-off floor, so the second earthquake sensor, which needs to stop even on the service cut-off floor, Even if the first seismic sensor having a detected seismic intensity lower than the detected seismic intensity operates, the seismic device will not be stopped on the service disconnected floor, which has the effect of eliminating theft or passengers being left stranded on the platform.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an elevator control device according to an embodiment of the invention, and FIG. 2 is a circuit diagram showing a conventional elevator control device. 1 is a stop preparation contact, 2 is a service disconnection switch, 3 is a car position detection switch, 4 is a first earthquake sensor, 5 is a second earthquake sensor, and 6 is a stop decision relay.

Claims (1)

[Scope of utility model registration request] A service disconnection switch that is connected in series to a stop preparation contact that closes when a car or hall call is made and disconnects service on a specific floor, and a service disconnection switch that is connected in parallel to this service disconnection switch and a predetermined distance of the floor from which service is disconnected. A car position detection switch that continues to operate until a predetermined distance has passed from the front to that floor, is connected in parallel to the stop preparation contact, and is connected in series to the car position detection switch, and is activated when the seismic intensity exceeds a first predetermined value. a first earthquake sensor;
It is equipped with a second earthquake sensor that operates when the seismic intensity is larger than that of the earthquake sensor. The series body of the first earthquake sensor and the second earthquake sensor are connected in parallel, and if the first earthquake sensor operates while the car is going up or down near the floor where the above service is cut off, the A control device for an elevator, characterized in that the elevator is caused to pass through a floor and land on the next floor, and when a second earthquake sensor is activated, the elevator is caused to land on that floor.