JPH0524760A - Elevator power failure rescue operation device - Google Patents

Abstract

(57) [Summary] [Structure] The commercial power supply 1 and the private power supply 11 are distinguished by the normal operation control device 3A. When the commercial power source 1 fails, the rescue operation is blocked until the private power source 11 starts up. Then, when the privately-generated power supply 11 is started up, the rescue operation control device 10 at the time of power failure immediately performs rescue operation when the privately-generated power supply 11 is shut off. If the private power source 11 does not start up, the rescue operation is performed after the above time has elapsed. [Effect] Since the battery 9 before the start of the private power supply 11 is not discharged, the reliability of the rescue operation when the private power supply 11 is down can be improved, and the rescue operation is performed even when the private power supply 11 does not rise. It can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an elevator power failure rescue operation device.

[0002]

2. Description of the Related Art In many cases, a device is installed which rescues passengers by operating the elevator by using a battery as a power source and landing it on the nearest floor when the elevator is out of power. On the other hand, recently, emergency elevators that are legally obliged to use a private power source as a standby power source for elevators, and general elevators that have a private power source, but are not mandatory, may be equipped with a rescue operation device during a power failure. It is increasing.

The structure of a conventional example will be described with reference to FIGS. FIG. 4 is a block diagram showing a conventional power-saving rescue operation device for an elevator disclosed in, for example, Japanese Patent Laid-Open No. 64-2984.

In FIG. 4, 1 is a commercial power source, 2 is a power failure detection relay, 2a is a normally closed contact of the power failure detection relay 2, 3 is a normal operation control device, 4 is an electric motor, 5 is a hoisting machine sheave, and 6 is a rope. , 7 is a basket, 8 is a counterweight, 9 is a battery, and 10 is a rescue operation control device during a power failure.

FIG. 5 is a block diagram showing a conventional power-saving rescue operation device for an elevator having a privately-generated power source, and parts not shown are the same as those in FIG. In FIG.
Reference numeral 11 is a self-generated power source such as an engine generator, NOR is a normally-open contact of an electromagnetic contactor that is closed when the commercial power supply 1 is supplied, and EMR is closed when the self-generated power supply 11 is established and supplied with power. It is a normally open contact of the electromagnetic contactor that is formed. From the viewpoint of equipment protection, the contacts NOR and EMR are electrically interlocked so as not to be closed at the same time.

Next, the operation of the above-mentioned conventional example will be described with reference to FIG. FIG. 6 is a timing chart showing the operation of the conventional elevator power failure rescue operation device. The figure (a) shows the state of a power supply, and the figure (b) shows the operating state of an elevator, respectively.

In normal operation of an ordinary elevator, the commercial power source 1 and the normal operation control device 3 drive the electric motor 4 to operate the elevator. At this time, the power failure detection relay 2 is energized. On the other hand, when the commercial power source 1 has a power failure, the power failure detection relay 2 is deenergized and its normally closed contact 2a is closed, so that the battery 9 is connected to the power failure rescue operation control device 10 and the motor 4 To drive the car 7 to the nearest floor for rescue operation.

Next, an elevator having a private power source 11 will be described. In normal operation, the commercial power supply 1 is supplied, so the contact NOR is closed (contact EMR is open).
Similarly, well-known operation is performed. On the other hand, when the commercial power supply 1 fails, the power failure detection relay 2 is deactivated.
In this case, since there is a private power source 11, the private power source 11 is started up and supplied as a backup of the commercial power source 1, but most of the engine start and voltage adjustment are manual type or semi-automatic type. Considering the power distribution operation time, the time until the privately-generated power supply 11 is supplied to the elevator takes several tens of seconds or more after the power failure.

However, when the power failure continues for a long time,
As shown in FIG. 6B, before the elevator operation by the private power source 11 (hereinafter referred to as “private power operation”), the rescue operation during a power failure is performed, and then the private power operation is performed. Since the power failure detection relay 2 is energized at the time of private operation, when the private power source 11 goes down at the end of private operation or for some reason, as shown in FIG. Relay 2 is de-energized and the operation is rescued during a power failure.

[0010]

In the conventional elevator power failure rescue operation device as described above, since the power failure detection relay 2 is deactivated to perform the power failure rescue operation, an emergency elevator or the like for fire fighting activities, etc. In the elevator having the private power generation source 11, the rescue operation during a power failure will be performed once during a power failure and once when the private power generation source 11 is turned off after the private power generation source 11 has started up. Since the power supply for this rescue operation during a power outage is the battery 9, there is a possibility that the second rescue operation after turning off the privately-generated power supply 11 may not be possible due to the effect of discharge from the first rescue operation during a power outage. There was a point. Especially in the case of an emergency elevator, it is for fire fighting activities due to a fire, and a private power source 1
There was a problem from the viewpoint of safe rescue of firefighters when private power supply 11 was turned off due to running out of fuel, etc.

The present invention has been made to solve the above-mentioned problems, and when an elevator having a private power source has a power failure, priority is given to private operation to prevent wasteful discharge, An object of the present invention is to obtain an elevator power failure rescue operation device capable of performing a rescue operation using a battery as a power source when the privately-generated power is turned off.

[0012]

An elevator power failure rescue operation device according to the present invention includes the following means. [1] Rescue operation control means for performing a rescue operation using a battery as a power source during a power failure. [2] Normal operation control means for preventing the rescue operation until commercial power supply is established when the commercial power source is lost, and immediately performing the rescue operation when the private power source is lost.

[0013]

In the present invention, the rescue operation control means performs the rescue operation using the battery as a power source at the time of power failure. Further, by the normal operation control means, when the commercial power source is lost, the rescue operation is blocked until the private power source is established,
The rescue operation is immediately performed when the private power source is lost.

[0014]

【Example】

Example 1. The configuration of the first embodiment of the present invention will be described with reference to FIGS. 1 is a block diagram showing a first embodiment of the present invention, and FIG. 2 is a circuit diagram showing a normal operation control device 3A of FIG. In the drawings, the same reference numerals indicate the same or corresponding parts.

In FIGS. 1 and 2, N + and N- are control power supplies during normal operation, 12 is a power failure detection relay, 12a is a normally open contact of the power failure detection relay 12, and 12b is a normally closed contact. Further, 13 is an off-timer (for example, 0.5 sec) for shifting to the rescue operation when the private power source 11 is lost.
3a is its normally open contact. Reference numeral 14 is an off timer (for example, 60 seconds) for detecting a power failure, 14a is its normally open contact, and 14b is a normally closed contact.

Further, 15 is an off-timer (for example, 61 sec) for shifting to the rescue operation when the commercial power source 1 is lost, and 15a is a normally open contact thereof. A rescue operation relay 16 is energized when the battery 9 is connected to the rescue operation control device 10 during a power failure, and deenergized when the rescue operation ends. 16a and 16b are normally open contacts of the rescue operation relay 16, and 16c is a normally closed contact. EMR1 is contact EMR
NOR1 is a normally open contact having the same function as, and NOR1 is a normally open contact having the same function as the contact NOR.

By the way, the rescue operation control means of the present invention is connected between the battery 9, the power failure rescue operation control device 10, the rescue operation relay 16 and the battery 9 and the control device 10 in the first embodiment of the present invention described above. In the first embodiment, the normal operation control means of the present invention includes the normal operation control device 3A, NOR, and EMR.

Next, the operation of the above-described first embodiment will be described with reference to FIG. FIG. 3 is a timing chart showing the operation of the first embodiment of the present invention, that is, the state of the power supply, the operation of each relay, and the operating state of the elevator. It should be noted that FIG. 10A shows the case where the private power generation source is established, and FIG. 7B shows the case where the private power generation source is not established.

First, the case where a private power source is established will be described. During normal operation, commercial power supply 1 is supplied and contact N
Since the OR is also closed, the electric motor 4 is driven by the normal operation control device 3A, and the car 7 performs a known operation.
In this case, since the rescue operation relay 16 is deenergized and the contact 16c is closed, the power failure detection relay 12 and the off timer 1
4 is activated. Therefore, since the contacts 12b and 14b are open, the rescue operation control device 10 at the time of power failure is not connected to the battery 9 and is in an inoperative state. On the other hand, contact NO
The off timer 15 is energized because R1 is closed, but the contact EMR1 is open so that the off timer 13 is open.
Is deactivated.

Here, when the commercial power supply 1 fails, the privately-generated power supply 11 starts up 50 seconds after the power failure. When the commercial power source 1 loses power, the contact NOR is opened and the control power sources N + and N- are lost, so the power failure detection relay 12 and the off timers 14 and 15 are deactivated, but the contact 13a is open and the contact 14b. , 15a do not operate until a predetermined time (in this case, 60 seconds and 61 seconds, respectively), so at this time the power failure rescue operation control device 1
Since the battery 9 is not connected to 0, rescue operation is not performed at the time of power failure.

When the self-generated power source 11 rises 50 seconds after the power failure and the contact EMR is closed, power is supplied to the normal operation control device 3A, so the elevator operation by the self-generated power source 11 is performed. At this time, control power supplies N +, N
-Is restored, so power failure detection relay 12 and off timer 1
4 is re-energized. Since the contact 12b is open and this contact is still open, the battery 9 is not connected to the power failure rescue operation control device 10 even at this time, and the power failure rescue operation is not performed. Further, since the contact 12a and the contact EMR1 are closed, the off timer 13 is energized.

When the elevator operation by the private power source 11 is terminated or the private power source 11 is shut off for some reason, the control power sources N + and N- are lost, so the power failure detection relay 12 and the off timers 13 and 14 are Be depressed. Contact 13a
Is closed for 0.5 sec, power is supplied to the rescue operation control device 10 during a power failure by the circuit of the battery 9 → contact 12b → contact 13a, and the rescue operation during a power failure is performed.
At this time, the rescue operation relay 16 is deenergized and the contact 1
Since 6a is closed, even if the contact 13a is opened, the battery 9
Power continues to be supplied and rescue operation continues. When the rescue operation relay 16 is deenergized at the end of the rescue operation, the contact 16a is opened, and the rescue operation controller 10 during a power failure is disconnected from the battery 9 and the whole operation is completed. The above situation is shown in FIG.

Next, a case will be described in which the privately-generated power supply 11 is not established for some reason during the power failure of the commercial power supply 1. Since the private power source 11 is not established, the contact point EM
R and EMR1 are open, and the off-timer 13 remains deenergized. Control power supply N +, N- due to power failure
Power loss detection relay 12, off timer 14, 1
5 is de-energized, but the contact 14b is for a predetermined time (60 seconds)
Open, the contact 15a is closed for a predetermined time (61 sec).

After the power failure, the private power source 11 is not established for 60s
When ec elapses, the contact 14b is closed, so that power is supplied to the rescue operation control device 10 during power failure in the circuit of the battery 9 → contact 14b → contact 15a, and rescue operation during power failure is performed. At this time, since the rescue operation relay 16 is energized and the contact 16b is closed, the power of the battery 9 is continuously supplied and the rescue operation is continued even if the contact 15a is opened. When the rescue operation relay 16 is de-energized at the end of the rescue operation, the contact 16b is opened to disconnect the rescue operation control device 10 during a power failure from the battery 9 and all ends. The above situation is shown in FIG.

To summarize the above operation, first, the commercial power source 1 and the private power source 11 are distinguished. When the commercial power source 1 fails, the rescue operation is blocked until the private power source 11 starts up. Then, when the private power supply 11 is started up, the rescue operation is immediately performed when the private power supply 11 is shut off.
Also, if the private power source 11 does not start up,
After the above time has elapsed, rescue operation is performed. As described above, since the battery 9 before the start of the private power supply 11 is not discharged, the reliability of the rescue operation when the private power supply 11 is down can be improved, and the rescue operation can be performed even when the private power supply 11 does not rise. It can be performed.

The first embodiment of the present invention, as described above,
Commercial power source 1 or private power source 11 during elevator operation
When the commercial power source 1 fails, the rescue operation by the battery 9 is blocked for a predetermined time until the private power source 11 starts up, and the private power operation is prioritized. Therefore, the discharge of the battery 9 is suppressed, There is an effect that the certainty of the rescue operation by the battery 9 after shutting off the private power source 11 and the safety of passengers can be significantly improved. Naturally, the rescue operation can be performed even when the private power source 11 does not start up.

[0027]

As described above, according to the present invention, the rescue operation control means for performing a rescue operation using a battery as a power source at the time of a power failure, and the rescue operation being blocked until the private power source is established when the commercial power source is lost, Since the normal operation control means for immediately performing the rescue operation when the private power source is lost is provided, in the case of a power failure, the private power source is prioritized to prevent unnecessary discharge, and the battery is powered when the private power source is turned off. There is an effect that the rescue operation can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a circuit diagram showing a normal operation control device according to the first embodiment of the present invention.

FIG. 3 is a timing chart showing the operation of the first embodiment of the present invention.

FIG. 4 is a block diagram showing a conventional power-saving rescue operation device for an elevator.

FIG. 5 is a block diagram showing a conventional power-saving rescue operation device for an elevator having a private power source.

FIG. 6 is a timing chart showing the operation of a conventional elevator power failure rescue operation device.

[Explanation of symbols]

 1 Commercial power supply 3A Normal operation control device 4 Electric motor 9 Battery 10 Rescue operation control device during power failure 11 Private power supply 12 Power failure detection relay 13 Off timer 14 Off timer 15 Off timer 16 Rescue operation relay

Claims (1)

Claims: 1. Rescue operation control means for performing rescue operation using a battery as a power source in the event of a power failure, and when the commercial power source is lost, the rescue operation is blocked until the private power source is established, and the private power source An elevator power failure rescue operation device comprising normal operation control means for immediately performing the rescue operation upon loss.