JPS627108B2 - - Google Patents

Description

[Detailed description of the invention]

This invention relates to an improvement in a device for stopping the operation of an elevator car. Conventionally, when traffic in a building is quiet, such as at night, elevator cars under specific conditions have been automatically shut down to save power. For example, after a certain period of time after the door is closed and there are no more hall calls or car calls to be serviced by each car, the motor generator, the lighting inside the car, most of the indicator lights, control functions, etc. are stopped. Here, the reason for suspending the system after a certain period of time is to observe the call occurrence status and confirm that there are almost no calls before suspending the system. This is to avoid conversely consuming too much power and shortening the lifespan of the equipment. Here, the above certain period of time is
It is always constant regardless of "No" or the number of idle machines. In other words, the time from zero idle cars to the first idle car was the same as the time from which the last idle car came to rest. However, as energy conservation has become a requirement of the times, it has become possible to automatically shut down an appropriate number of machines depending on the situation to the extent that service does not deteriorate significantly even during the day. In this case, rather than passive power saving such as automatically suspending power because there are no calls, the request is to create a suspension basket even if the service is slightly degraded. It will not be restored unless it drops considerably. Therefore, the time from when there are no more calls to service to when the system is suspended should be short (for example, long enough to assume that there are no more passengers).
If the system is shut down after a certain period of time as in the past, there are drawbacks such as it takes too much time to reduce the number of vehicles in operation to save electricity. The present invention is intended to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide an elevator suspension device that can efficiently perform power-saving operation. An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, (+) and (-) are DC power supplies, and 0 is a zero car designation relay contact that opens when the designated number of idle cars is zero.The above designation is performed, for example, by manually operating a switch. 1a, 1b to 3a, 3
b is the relay contact designated for 1 to 3 cars, 4 is the relay contact designated for 4 cars, and 10 is the zero car idle relay contact that closes when the number of cars actually at rest is zero. Since detection is easy, the circuit is omitted. 11 is the same one-stop relay contact, 12a and 12b are the same two-stop stop relay contacts, 13 and 14 are the same three- and four-stop stop relay contacts, 20 is the rest time 20 second command relay, and 20a
is its normally closed contact, 20b is also its normally open contact, 21
is also a 3-minute pause command relay, 21a is its normally closed contact, 21b is also a normally open contact, 22 is also a 1-minute pause command relay, 22a is its normally open contact, 23a to 23n are the terminals on each floor's landing Relay contacts 24a to 24n are relay contacts for up-hall call assignment, which are opened when a call is registered and assigned, and 25a-25n are down-hall call assignment relay contacts.
A car call registration relay contact that closes when a car call for each floor is registered in the car, 26 a door closed detection relay contact that closes when a car door closes, 27 an available car detection relay, and 27a a Its normally open contact, 28, is shorted between terminals L- _M0 and terminals A-B.
20 seconds after a voltage is applied between terminal C
29 is the output relay of timer 28, which outputs an output after 1 minute when terminals L and M ₁ are short-circuited, and after 3 minutes when terminals L and M ₃ are short-circuited. 29a is its normally open contact, 30 is a relay that issues a command to stop the motor generator when energized, 31 is a relay that also issues a command to turn off the interior lighting of the car, and 32 is also a relay that turns off the position indicator. A relay 33 that issues a command also issues a command to suspend a part of the power supply for the control panel. Note that the circuit shown in FIG. 2 is provided for each car. In addition, the zero standstill relay contact 10, 1 to 4 standstill relay contacts 11, 12a, 12b, 13 and 1
4 is a detection means for detecting the number of idle cars. Next, the operation of this embodiment will be explained. Assuming that the number of dormant cars is now designated as two, the two-car designation relay contacts 2a and 2b are open. Here, when the car that is actually at rest after being commanded to rest is detected to be in the zero range, the zero range rest relay contact 1 is activated.
0 is closed. (+)-0-1a-10-20-
The (-) circuit energizes the 20 second command relay 20, opening the contact 20a and closing the contact 20b. 1 minute command relay 22 by opening contact 20a
is deenergized and contact 22a is opened. Moreover, since the 2-4 unit pause relay contacts 12b, 13, and 14 are open, the 3-minute command relay 21 is not energized, and the contact 21b is open. Now timer 28
Only terminals L and _M0 of are short-circuited. Now, in an elevator with an assignment system, a car responds to all car calls, as well as calls to and from the landings to which it is assigned, and when the door closes, the car becomes available and waits for the next call. I will do it. That is, the relay contact points 23a to 23n, 24a for assigning up calls and down calls to the hall
~24n, car call registration relay contacts 25a~25
When all the contact points 26 and 26 are closed, the available car detection relay 27 is energized and the contact 27a is closed. The timer 28 now starts counting the time limit, and when 20 seconds have elapsed, the output relay 29 is energized, the contact 29a is closed, and the relays 30 to 33 are energized. As a result, the motor generator is stopped, the lights inside the car are turned off, the position indicator is turned off, and a part of the power supply for the control panel is stopped, and the car enters the rest state. Next, when it is detected that one car is actually at rest, contact 11 closes (contacts 10, 1
2a is open. ). However, since the contact point 2a is open, the 20 second command relay 20 is deenergized.
Contact 20a is closed and contact 20b is open. In addition, since the contacts 12b, 13, and 14 are still open, the 3-minute command relay 21 is not energized, and the contacts 21
A is closed, and contact 21b is open. Now, the 1 minute command relay 22 is energized from the (+)-20a-21a-22-(-) circuit, and the contact 22a
is closed, and only terminals L and _M1 are shorted. Therefore, when this car becomes available, the timer 28 starts counting the time limit, and when one minute has elapsed, the output relay 29 is energized and the car is put to rest. When two or three cars are actually at rest, contacts 12a, 12b or 13 are closed, but contacts 2a, 2b are open, so 20 second command relay 20 and 3 minute command relay 21 are not energized, but the 1-minute command relay 22 is energized as in the case of only one relay. Next, when the number of idle cars is actually detected as 4, the contact 14 is closed (+)-4-3
The 3-minute command relay 21 is energized by the circuit b-14-21-(-), the contact 21a is opened, the contact 21b is closed, and terminals _LM3 are short-circuited. The one minute command relay 22 is now deenergized.
Furthermore, since the contacts 10, 11, and 12a are open, the 20-second command relay 20 is also not energized. Therefore, in this case, the car goes into hibernation after three minutes have passed since the car became available. In this way, the above-mentioned time limit is controlled according to the relationship between the actual number of idle cars and the designated number of cars, as follows.

[Table] In other words, when the specified number of dormant cars is "2", it will be 20 seconds when the first car is idle, and 1 minute when the second to fourth cars are idle, and the second car will be idle. The time is longer than when one car is out of service. In the above embodiment, the conditions for detecting an available car include the presence or absence of a call and the presence or absence of a closed door, but the present invention is not limited to these, and information such as the direction, number of passengers, etc. may also be used. In addition, in group management of a so-called non-assignment method that controls departure time intervals at a predetermined departure floor, the terminal up-call and down-call assignment relay contact 23 of the embodiment
For a to 23n and 24a to 24n, up-call and down-call registration relay contacts may be used, respectively. As mentioned above, in this invention, when there are few idle cars and many cars in service, the system suspends the cars as soon as the service is completed.
In addition to making it possible to save electricity, when there are many idle cars and fewer cars in service, the system will suspend the service after a long period of time, allowing you to immediately change the idle car to a service car. The frequency of reverse changes can be reduced, reducing user confusion, and at the same time, efficient power-saving operation can be performed.

[Brief explanation of the drawing]

FIGS. 1 and 2 are circuit diagrams showing an embodiment of an elevator suspension device according to the present invention. 0...Zero designated relay contact, 1a, 1b to 3
a, 3b...1 to 3 designated relay contacts, 4...
4 specified relay contacts, 10...Zero standstill relay contact (detection means), 11...1 standstill relay contact (detection means), 12a, 12b...2 standstill relay contacts (detection means), 13, 14 ...3 and 4 standstill relay contacts (detection means), 20...rest time
20 seconds command relay, 21...3 minutes command relay on the left,
22...Same left 1 minute command relay, 23a to 23n...
...Passenger hall up call assignment relay contact, 24a to 24n
...Passport downbound call assignment relay contact, 25a to 25
n...Car call registration relay contact, 26...Door closed detection relay contact, 27...Available car detection relay, 28...Timer, 29...Same output relay,
30... Motor-generator stop command relay, 31... Car lighting turn-off command relay, 32... Position indicator light-off command relay, 33... Control panel power supply partial stop command relay.

Claims (1)

[Claims] 1. Detection means for detecting the number of idle cars in a plurality of elevators managed as a group that have completed their service and are suspended after a predetermined period of time from the completion of the service; An elevator operation suspension device comprising time limit changing means for increasing the predetermined time limit as the number of idle cars increases.