JPS58207269A - Alarm device for abnormality of elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an abnormality warning device for an elevator.

Conventionally, when an abnormality occurs in an elevator and the elevator stops for one floor, a bell installed in the car immediately rings or an abnormality warning is displayed on the control panel in the control room.

However, in recent computerized elevators, even if the elevator stops between floors due to some abnormality, in order to ensure basic safety, the elevator must run again at low speed to the nearest floor and safely rescue one passenger. A low-speed operating device is provided to enable this. Therefore, the number of cases where an abnormality warning is simply issued based on conventional standards is increasing. For example, when automatic rescue is possible, issuing an abnormality alarm causes the staff to turn off the power, which takes more time, or the elevator runs automatically, albeit at a low speed, while issuing an abnormality alarm.
Problems such as staff being confused in handling procedures have become noticeable. In short, in handling when an abnormality alarm is issued,
This is because there is no consistency that corresponds to the new functions added.

This invention is intended to solve the above-mentioned drawbacks, and aims to provide an abnormality warning device for an elevator that does not immediately issue an abnormality warning when it is detected that the elevator can run again even after stopping for one floor. It is.

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the elevator abnormality warning device of the present invention will be described based on FIG.

In the figure, 1 indicates a safety detection relay, and #1 relay detects the inability to run again by de-energizing the governor contact GOV, the rescue switch EES provided on the car, and the top floor overtravel limit switch ST. .

Bottom floor overstep limit switch SR, emergency stop switch ESS
It is connected in series with the + and – DC power lines. 1allb is each safety detection relay 1
Normally open contacts and normally closed contacts. 2'' is a rerunable abnormality detection relay that detects an abnormality by energizing operation, and the abnormality detection relay 2 includes a door zone detection contact DZa which detects the inside of the door zone by energizing operation, a contact 1a of the safety detection relay 1,
It is connected in parallel to + and - DC power sources via a normally closed contact 8b of a running relay (not shown) that is energized while the car is running and a normally open contact 3a of a low speed operation command relay 3, which will be described later. Reference numeral 3 denotes a low-speed operation command relay that issues a low-speed operation command by deenergizing operation, and this relay 3 is connected to + and - via a low-speed operation switch 4 and a normally closed contact 5b of an automatic low-speed operation command relay 5, which will be described later.
connected in parallel to the DC power supply. Reference numeral 5 denotes an on/pre-timer type automatic low-speed operation command relay, which issues a low-speed operation command by energizing operation, and connects the normally open contact 2a of the abnormality detection relay 2, the self-holding contact 5d connected in parallel to the contact 2a, and the door. It is connected in parallel to the + and - DC power supplies via the zone detection contact DZb. Reference numeral 6 denotes an off-play timer type abnormality detection timer relay, which connects the normally open contact 3b of the low speed operation command relay 3, the normally open contact 8a of the travel relay, and the normally closed contact 5c of the automatic low speed operation command relay 5. It is connected in parallel to + and - DC power supplies via a parallel circuit. Further, T is an abnormality alarm device, which includes a normally closed contact 1b of the safety detection relay 1, a normally open contact 5a of the automatic low speed operation command relay 5 connected in parallel to this, and a normally closed contact 6a of the abnormality detection timer relay 6. It is connected in parallel to the + and – DC power supplies via a series circuit.

In the above configuration, the operation of this embodiment will be explained below.

First, contact GOV, 7. Itsuchi EIIES, ST.

If the safety detection relay 1 de-energizes due to a break in either SB or ESS, it will not be possible to run again, so an abnormality alarm will be immediately issued in the circuit of DC power supply element - normally closed contact 1b - abnormality alarm device 7 - DC power supply. do.

Accordingly, when an elevator running at high speed stops between floors, the normally closed contact DZa- of the power supply +- door zone detection relay
The abnormality detection relay 2 is energized by the closed circuit of the normally open contact 1a of the safety detection relay 1, the normally closed contact 8b of the traveling relay, the normally open contact 3a of the low speed operation command relay 3, the abnormality detection relay 2, and the power supply. As a result, the power supply element - normally open contact 2a - toer zone detection relay contact DZa and self-holding contact 5d -
A closed circuit of the power source 1 is formed, and the automatic low-speed operation command relay 5 is energized by this circuit, and when a predetermined time has elapsed, it is energized and an automatic low-speed operation command is sent. and.

When the normally closed contact 5b of the automatic low-speed operation command relay 5 is opened by the energizing operation, the low-speed operation command relay 3 is deenergized, and as a result, a low-speed operation command is sent out.

Further, when the normally open contact 3b of the automatic low speed operation command relay 3 is opened, the normally open contact 8 of the traveling relay which has already been opened
The circuit of the abnormality detection timer relay 6 is opened at the same time as a, and as a result, time counting of this timer (not shown) is started, and the normally open contact 8a of the traveling relay remains open even after a predetermined period of time has elapsed since the issuance of the low-speed operation command. is not closed, the abnormality detection timer relay 6 is deenergized, and it is determined that the elevator car can run, and at this point, the power source 1 - the normally open contact 5
A-normally closed contact 6a-abnormality alarm device 7-power supply circuit provides a drunken alarm.

On the other hand, if the elevator car runs within the above predetermined time,
Normally closed contact 6 & is open, so no abnormality alarm is issued.
When the elevator reaches the door zone, the contact DZb of the door zone detection relay is opened, and the automatic low-speed operation command by the relay 5 is canceled.

As explained above, in this invention, when it is detected that the elevator cannot run again even if it stops abnormally, an abnormality warning is issued only when the elevator does not start running after a predetermined period of time has elapsed. .

Its purpose is to operate a low-speed operation device that, if operation is started within a predetermined time from the issuance of a low-speed operation command, will cause the elevator to run at low speed to the nearest floor and rescue the passengers in the car. As a result, automatic rescue can be carried out, eliminating problems such as staff turning off the power due to abnormal alarms, and ensuring sufficient elevator safety. It is something that plays.

[Brief explanation of drawings]

FIG. 1 is an electrical circuit diagram showing one embodiment of this explanation. 1...Safety detection relay, 2...Abnormality detection relay that allows rerun, 3...Low speed operation command relay, 40. . ...Low speed operation switch, 5...Automatic low speed operation command relay, 6...Abnormality detection timer relay,
7: Abnormality alarm system, EES: Rescue switch on top of the car + ESS: Emergency stop switch, DZ: Door zone detection relay. Agent Makoto Kuzuno - (and 1 other person) Procedural amendment (spontaneous) 58 1 1g Date of 1939 Mr. Commissioner of the Japan Patent Office 1, Patent Application No. 1987-87567 2, Name of the invention Elevator Abnormal Alarm Device 3, Relationship with the Amended Person Case Patent Applicant Address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Name (601) Mitsubishi Electric Corporation Representative Katayuni Hei Department 4, Acting Resident Address: 2-2-3 Marunouchi, Chiyoda-ku, Tokyo (1) Column 6 of the detailed explanation of the invention in the specification, contents of the amendment (1) "For the purpose of securing" on page 2, lines 6-7 of the specification. Correct "aru" with "secure". (2) In the 5th line of the 4th page, the words ``On-play timer'' are corrected to ``On-play timer''. (3) On the 4th line of page 5, the 1st contact says ○\°”.
Correct with contact GOVJ, which is a basic safety detection device. (4) On page 5, line 6 of the same page, it says "When deenergized",
[If deenergization occurs], correct it. (5) On page 5, line 9 of the same page, replace the phrase ``accordingly,'' with ``
On the other hand, due to some cause other than the above, it is amended. ,, (6) Page 5, lines 16-17 - A closed circuit is formed between the second F contact DZa and the self-holding contact 5d - the power supply, and in this circuit, the text ``[contact DZb - automatic low speed operation command] Correct it to 1 in the closed circuit of relay 5 - power supply. (7) On page 6, line 12 of the same page, [Correct the phrase ``drivable j'' to ``unable to drive.'' (8) In the second line of page 7, the words "unable to run again" should be corrected to "possible to run again." (9) On page 7, line 5 of the same page, replace "low speed operation command" with "
"Automatic low speed command" is corrected. (10) On page 7, line 8 of the same page, it says "low speed operation device".
Correct with "Automatic low-speed driving device".

Claims (1)

[Claims] a first detection means for detecting that the elevator cannot run again when the elevator stops abnormally; a second detection means for detecting that the elevator is able to run when the elevator stops abnormally; and the second detection means is activated. Then, in an elevator equipped with a low-speed operation device that runs the elevator at low speed to the nearest floor after a predetermined time to rescue passengers in the car, when the first detection means is activated, an abnormality alarm is immediately issued and a second The elevator is characterized in that, when the detection means is activated, an abnormality alarm is issued only when re-travel is not started even after a predetermined period of time has elapsed from the issuance of a low-speed one-turn command for driving the low-speed operating device. Abnormality alarm device.