JPS6117746B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an emergency elevator control device, and particularly to control of an emergency elevator in a group management control device that controls an emergency elevator and a general elevator as one group. Regarding equipment.

[Background of the invention]

When controlling emergency elevators and general elevators as one group, there are rules based on various laws and regulations, which state that "while the emergency elevator is in emergency operation, it shall not be affected by the general elevator." In other words, emergency elevators are used for firefighting purposes in the event of a fire in the building, so even if they are installed in the fire prevention section of the building and are group-controlled together with general elevators, the elevator machine room is kept in a separate room. It goes without saying that even if a general elevator were to burn down, it would still be able to operate without any abnormalities.

However, in order to control elevators as a group, it is necessary to exchange hall call signals between each elevator, so if a general elevator burns down, various negative effects such as grounding on the signal line will occur. Therefore, in order to make the emergency elevator work without any problems, conventionally the machine rooms of the emergency elevator and the general elevator were separated by a wall CL, as shown in Figure 1, and the emergency elevator control device CP1 and the general elevator were separated by a wall CL. Connect to the elevator control device CP2 using the connection cable WP.
WP can be separated using a separation plate SCP. Note that heat-resistant electric wire is usually used as the connection cable WP.

By the way, the separation board SCP has a built-in relay or the like to electrically cut off the exchange of signals between the control devices CP1 and CP2 in the event of an emergency. Therefore, the general elevator control device CP
Even if part or all of 2 causes an accident such as grounding, if the signal exchange is interrupted at the separation panel SCP, the effect will be on the control device CP of the general elevator.
It is possible to prevent this from spreading to 1.

However, although it is ideal to provide a disconnection board SCP as described above, it not only makes the circuit complicated and expensive, but also adds contacts that are hardly related to the signal line, reducing reliability. There is a drawback.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an emergency elevator control device that eliminates the drawbacks of the prior art described above, has a simple circuit configuration, and is highly reliable.

[Features of the invention]

A feature of the present invention is that in a system that performs group management control of emergency elevators and general elevators to service a plurality of floors, a hall call signal from a hall call device on each floor is transmitted to a control device of the emergency elevator; A hall call signal storage relay connected to the transmission line is built into this emergency elevator control device, and power is supplied from the emergency elevator control power source to the storage relay, and the storage relay is connected to the general elevator control device. The contact signal is transmitted as a hall call signal, and during emergency operation, power supply from the emergency elevator control power source to the hall call storage relay is cut off. As a result, the emergency elevator control device can disable hall call memory by simply cutting off the power supply to the hall call memory relay in an emergency, eliminating the influence from the hall call device on each floor, and controlling the general elevator control device. Simply sending the contact signal to the device eliminates the need for a signal input line, thereby eliminating its influence. Therefore, compared to the conventional system that cuts off each hall call signal when receiving a hall call signal from a general elevator, the configuration is simpler and the number of separation panels SCP etc. can be reduced, improving reliability. can be improved.

[Embodiments of the invention]

The present invention will be explained in detail below using an embodiment shown in FIGS. 2 to 5. FIG. 2 is a basic configuration diagram of a control device according to the present invention, and the same parts as in FIG. The difference from FIG. 1 is that the separation plate SCP in FIG. 1 is removed and the contents of the emergency elevator control device CP1 are improved and designated as CP1'.

The improvements will be explained in detail below. FIG. 3 is a circuit diagram showing an embodiment of a hall call storage circuit for group management control of emergency elevators and general elevators according to the present invention. However, among the elevators under group management control, the emergency elevator is A, the general elevator is B, and the following example assumes that both A and B are one unit, and the service floors are on the 1st to 4th floors. I will explain. In FIG. 3, since the hall call memory circuit is preferentially supplied with power from machine A, the power source is switched by relay contacts ANa and ANb that are turned on when machine A is automatically operated. In other words, when relay AN is turned on during automatic operation of Unit A, the relay contact ANa
closes and ANb opens. Now, with the contact ANa closed, press the 3rd floor ascending hall call button HC3.
When U is pressed by a waiting customer, AP−ANa−EMb
-HC3U-H3U-ANa-AP circuit turns on the rising hall call relay H3U, and its contact H3
Ua closes. Therefore, AP−ANa−EMb−H3
It is self-maintained by the Ua-H3U-ANa-AP circuit. Here, AP is the power source from Unit A, BP is the power source from Unit B, and EMb is the contact point of the relay EM that turns on when an emergency command is issued. Note that the downward direction circuit and the hall call reset circuit are omitted in the figure, and the portion surrounded by the dotted line is implemented in the control device CP1' of the A car.

FIG. 4 is a circuit diagram of car A in which the elevator responds to the signals stored by the circuit of FIG. In the figure, 11a and 11b, 12a and 12b are relay contacts that turn on when ascending and descending, respectively, and 13b
21 and 22 are upward and downward direction selection relays, 21b and 22b are respective contacts,
23 is a deceleration relay, 23a is its contact, F1b~
F4b is a position detection relay contact that is turned on from the deceleration position to the stop position, and 1Ca to 4Ca are car call relay contacts. Suppose that the elevator is on the first floor and there is a call to the third floor ascending hall. At this time, since the elevator is on the first floor, the position detection relay contact F1b is open. Therefore, direction selection relay 2 is off and its contact 22b is closed. Therefore, the direction selection relay 21 is AP-12b-22
b-21-F4b-F4b-F4b-F3b-H
Turns on by the 3Ua-ANa-AP circuit. When the relay 21 is turned on, the elevator selects the upward direction, and when the door is closed (the circuit is omitted in FIG. 4), the elevator begins its upward movement.
Note that while relay 21 is on, relay 22
Since the contact 21b is open, it is interlocked so that the relay 21 and the relay 21 do not turn on at the same time.

When the elevator reaches the deceleration position for ascending to the third floor, position detection relay contact F3b opens, so relay 21
is turned off. Moreover, the deceleration relay 23 is 11a-
23-13b-22b-F3b-F3Ua-ANa
-Turned on by the AP circuit, AP-11a-23-
It is self-maintained by the circuit of 23a-AP. As a result, the elevator decelerates to the third floor and stops. Note that the circuit shown in FIG. 4 is installed in the control device CP1' of machine A.

Figure 5 is a circuit diagram of Unit B similar to Figure 4, and the area surrounded by Figure 4 is that the circuit in Figure 4 is connected to the power source AP of Unit A, whereas the circuit in Figure 5 is connected to the power source AP of Unit A. The circuit is connected to the power supply BP of Unit B, and
The signal line indicated by n is a crossover line to the hall call memory circuit located on the control device CP1' side of machine A, and is connected to the hall call relay contacts H1Ua-H4.
Da is that the contacts of the hall call memory relays H1U to H4D mounted on the A machine side are used. That is, the hall call signal circuit of car No. B is routed through the signal connection cable WP (see FIG. 2) that connects the control device CP1' of car No. A and the control device CP2 of car No. B.

Next, the operation when an emergency command is issued to the elevator will be explained using FIGS. 3 to 6. When an emergency command is issued to the elevator, A
Unit 0 went straight to the evacuation floor and was assigned to the fire brigade.
Unit B will operate on standby on the evacuation floor.

When an emergency command is issued, relay EM turns on,
Since the contact EMb is opened in FIG. 3, the Hall call storage circuit in FIG. 3 is cut off. As a result, even if the hall call buttons HC1U to HC3U are pressed, the hall call relays H1U to H3U will not hold themselves.
Even if a grounding accident occurs in HC1U to HC3U or their connection lines due to fire, the relays H1U to H3U will not turn on. That is, the Hall call memory circuit is completely disconnected and the Hall call relay contact H
Since 1Ua to H3Ua, etc. are all open, there is no influence on the control devices of the A and B machines.

On the other hand, the machine room of the elevator in Unit B was destroyed by fire.
Let's consider a worst-case scenario in which the connecting cable WP (see Figure 2) between control device CP2, Units A and B is also burnt out, and all of them are grounded. In such a case, the circuit shown in Figure 5 of Unit B would completely lose its function, and the damage would extend to the connection cable WP between Unit B and Unit A. However, the circuit of Unit A shown in Fig. 4 does not require any signals from Unit B, and can be operated only by the signals in Unit A control device CP1', so the It will not be affected by In other words, the signal from the connection cable WP is sent to the hall call memory relay H.
This is a signal from contacts H1Ua to H4Da of 1U to H4U, so even if this cable WP is burnt out and contacts H1Ua to H4Da are grounded,
There is no effect on the hall call memory relays H1U to H4D or the main body of the A car control device CP1'.

This point will be explained in more detail in comparison with the conventional control circuit for machine A shown in FIG.

In FIG. 6, the same parts as in FIG. 4 are given the same reference numerals and explanations are omitted, but the Hall call relay contacts H1Ua to H4Da within the dotted line CP2' are housed in the B machine control device CP2. These signals are taken in through a connection line n. Contact SCP ₁ ~
SCP ₇ is a disconnection contact provided in the disconnection plate SCP of FIG.

Now, if circuit CP2 of Unit B is burnt out and its connection line n is grounded at a point, a ground circuit shown by a dashed line is formed, and the descending direction selection relay 22
turns on, causing the emergency elevator to malfunction. To prevent this, disconnect the contact
This means that SCP ₁ to SCP ₇ are opened and the connection line n is disconnected.

On the other hand, according to the circuit of the present invention explained in FIG. 4 above, since there is no connection line from machine B,
Even if a burnout accident occurs in circuit CP2 of the unit, A
No. 1 machine is not affected in any way, and the disconnection contacts SCP ₁ to SCP ₇ , etc. can be made unnecessary. On the other hand, even if the connection line n on the B side in Figure 5 burns out and causes a grounding accident, there will be no actual damage since the B machine is not originally used for emergency purposes.

In addition, in the embodiments shown in FIGS. 3 to 5, A
One each for Unit No. and Unit B, and one service floor.
Although the case of floors 1 to 4 has been described, the present invention is not limited thereto, and there are no restrictions on the number of elevators or the service floors, and similar effects can be obtained. Further, the circuit may be locally cut off only in necessary parts.

〔Effect of the invention〕

As described above, according to the present invention, the separating machine SCP
Because it is possible to prevent the effects of burnout of the hall call device and general elevator control device installed on each floor without using the can.

[Brief explanation of the drawing]

Figure 1 is a basic configuration diagram for conventional group management control of emergency elevators and general elevators;
Figure 3 is a basic configuration diagram of a control device according to the present invention, Figure 3 is a circuit diagram showing an embodiment of a hall call storage circuit for group management control of emergency elevators and general elevators according to the present invention, and Figure 4. is a circuit diagram of the A machine in which the elevator responds to the signals stored by the circuit of FIG. 3, FIG. 5 is a circuit diagram of the B machine similar to that in FIG. 4, and FIG. This is a circuit diagram of machine A. CP1'...Emergency elevator control device, CP
2... General elevator control device, WP... Connection cable, EMa, EMb... Relay EM contact that turns on when an emergency command is issued, ANa,
ANb...Relay contact that turns on when machine A is operated automatically, AP...Power supply from machine A, BP...
Power from Unit B, H1U~H3U...Rising hall call relay, H1Ua~H3Ua...Relay H1
Contacts of U to H3U, H2Da to H4Da...Contacts of relays H2D to H3D, F1b to F4b...Contacts of position detection relays F1 to F4, 1Ca to 4Ca...
Contact points of car call relays 1C to 4C, 21... Ascending direction selection relay, 22... Descending direction selection relay, 23... Deceleration relay.

Claims (1)

[Claims] 1. A hall call device installed on each floor, a device that controls the general elevator in response to the hall call, and a device installed in a fire prevention compartment separate from the control device for the general elevator and that controls the general elevator in response to the hall call. A connection line for transmitting a hall call signal from the hall call device to the emergency elevator control device, and the emergency elevator control device is connected to the connection line. A hall call memory relay that stores the hall call signal when the hall call is stored, a control power source for the emergency elevator that supplies power to the hall call memory relay, and a power supply that cuts off the power supply to the hall call memory relay during emergency operation. An emergency elevator control device comprising a built-in means and a connection line for transmitting a contact signal of the hall call memory relay to the general elevator control device.