JPS6143823Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in a device for stopping a passenger conveyor.

Passenger conveyors such as escalators and moving passages
If the vehicle suddenly stops for some reason while driving, there is a risk that passengers on the tread may fall. Therefore, it has been proposed that when an emergency is required, a sudden stop command is issued to bring the passenger conveyor to a sudden stop, but for other stops, a slow stop command is issued to bring the conveyor to a gentle stop to prevent passengers from falling. ing.

However, when both a sudden stop command and a slow stop command are issued to such a passenger conveyor, if the passenger conveyor is brought to a slow stop, there is a risk of a dangerous situation for the former. .

This idea was made in consideration of the above, and when both a sudden stop command and a slow stop command are issued,
It is an object of the present invention to provide a stopping device for a passenger conveyor that performs proper stopping.

An embodiment of this invention will be described below with reference to FIGS. 1 and 2.

In the figure, (+) and (-) are DC power supplies, and 1 is a group of sudden stop detection contacts that are normally closed and open when a sudden stop is required, including a safety switch, an operation switch, etc. There are safety switches that operate when a person's foot is caught between the skirt board and the tread, a safety switch that operates when a person's foot is caught between the skirt board and the tread, and an emergency stop button. 2 is a slow stop detection contact group consisting of a safety switch that is normally closed and opens when a slow stop is required, an operation switch, etc., a safety switch that operates when the drive chain is extended, and a thermal overload switch to protect the motor. There are current relay contacts, stop switches, etc. 3 is a sudden stop command relay that issues a sudden stop command when deenergized, 3a to 3c are its normally open contacts, 4 is an up-run button, 5 is a down-run button, and 6 commands up run when energized. 6a is the normally open contact, 7 is the downward operation relay, 7a is the normally open contact, 8 is the operating relay, 8a is the normally open contact, 8b and 8c are the normally closed contacts, 9 is a known slow stop control device that slowly decelerates and stops the passenger conveyor; 10 is an electromagnetic brake coil that releases the electric motor when energized; and when this is deenergized, the electric motor is restrained by the force of the spring.

Next, the operation of this embodiment will be explained.

Now, if you press the up drive button 4, (+)-1-2
-4-6-8-(-) circuit energizes the upstream operation relay 6, and the contact 6a closes to self-hold. At the same time, the operation relay 8 is also energized, the contact 8a is closed, and the contacts 8b and 8c are opened. By closing the contact 8a, (+)-1-8a-3-(-)
A circuit is formed, and the sudden stop command relay 3 is energized and self-maintained by closing the contact 3a. Also,
Contacts 3b and 3c are closed. The passenger conveyor now starts up-bound operation.

When the slow stop detection contact group 2 opens, the up run relay 6 and the run relay 8 are deenergized, and the contact 8a
is opened, and contacts 8b and 8c are closed. Contact 8a
Even if the relay 3 is opened, the sudden stop command relay 3 is not deenergized due to self-holding, and the contacts 3b and 3c are closed.
Therefore, (+)-3b-8b-9-8c-3c-
The (-) circuit operates the slow stop control device 9 to slowly stop the passenger conveyor.

Next, when the sudden stop detection contact group 1 opens during the upward operation of the passenger conveyor, the sudden stop command relay 3, the upward operation relay 6, and the operation relay 8 are deenergized, and the contacts 3b and 3c are opened. Therefore, the slow stop control device 9 and the electromagnetic brake coil 10 are deenergized, the electric motor is restrained, and the passenger conveyor suddenly stops.

If contact groups 1 and 2 are connected at the same time, or if contact group 1
Even if the contact group 2 is opened after the contact group 2 or the contact group 1 is opened after the contact group 2, the sudden stop command relay 3 is deenergized in both cases, so that the passenger conveyor suddenly stops.

In the embodiment, uphill driving has been explained, but downhill driving can also be explained in the same way.

As explained above, there is a running relay that is activated by the operation of either the sudden stop detection contact or the slow stop detection contact, and a sudden stop command relay that is activated by the operation of the sudden stop detection contact. It is equipped with a circuit that slowly stops the passenger conveyor via a control device, and suddenly stops the passenger conveyor by actuating the sudden stop command relay and the operation relay. As a result, when both the sudden stop detection contact and the slow stop detection contact operate, priority can be given to the operation of the sudden stop detection contact, and the slow stop detection contact immediately follows the operation of the sudden stop detection contact. Even if the slow stop detection contact operates immediately after the slow stop detection contact operates, the passenger conveyor can be stopped suddenly, and the stop of the passenger conveyor can be appropriately selected depending on the situation. can do.

[Brief explanation of drawings]

1 and 2 are circuit diagrams showing an embodiment of the passenger conveyor stopping device according to the present invention, in which 1: sudden stop detection contact group, 2: slow stop detection contact group, 3: sudden stop command relay, 8: operation relay, 9: slow stop detection control device, 10: electromagnetic brake coil.

Claims (1)

[Scope of utility model registration request] When the sudden stop detection contact operates, the passenger conveyor is brought to a sudden stop, and when the slow stop detection contact is operated, the passenger conveyor is brought to a slow stop, and either of the sudden stop detection contact or the slow stop detection contact A driving relay activated by the operation, a sudden stop command relay activated by the operation of the sudden stop detection contact, and a slow stop control device connected by the operation of the driving relay to slowly stop the passenger conveyor, and A stopping device for a passenger conveyor, comprising: a circuit for disconnecting the slow stop control device and suddenly stopping the passenger conveyor by activation of a sudden stop command relay and a driving relay.