JPH1087241A - Failure detector for door opening/closing device of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate recording of the signal condition of a running control relay when a failure occurs by actuating a recorder for recording the operation signal of the running control relay while there are signal outputs from a signal outputting means and an door closing detecting means so as to provide a trigger signal to the recorder only when a door opening/closing device fails. SOLUTION: When a car stops its traveling and a car traveling detecting relay 11 is switched OFF, time measuring by a first time limit relay is finished 1.9 seconds after the stop of car traveling, an ON pulse signal is obtained via a probe 22 and, since a door closed condition is still maintained even in this time zone, a trigger condition for actuating a recorder is established. Then, the signal conditions 40a to 40e of a running control relay while the trigger conditions hold are recorded by a recorder. Thus, a trigger signal is provided to the recorder only when a door opening/closing device fails and recording of the operation condition of the running control relay at the time of a failure is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator door opening / closing device failure detector for detecting a failure of an elevator door opening / closing device.

[0002]

2. Description of the Related Art FIG. 6 is an explanatory diagram of a conventional method for detecting a door opening failure of an elevator. In FIG. 6, reference numeral 10 denotes an operation control panel of the elevator. Reference numeral 11 denotes one of elevator operation control relays, which is a car running detection relay that detects the running of the car, and 11a is a contact of an operation control relay (not shown). When the car runs, the contact 11a is closed and the car is closed. The travel detection relay 11 is energized.

Further, reference numeral 12 denotes one of operation control relays of the elevator, which is a door-close detection relay for detecting the closing of the door of the car, and reference numeral 12a denotes a contact of an operation control relay (not shown). The contact 12a is closed and the door closing detection relay 12 is energized.

[0004] Reference numeral 20 denotes a commercially available recorder. In FIG. 6, a signal (trigger signal) for moving the recorder 20 by connecting the recorder 20 to the operation control panel 10 using probes 21 and 22, respectively. From the control panel 10 of the elevator via the probes 21 and 22 to the recorder 20.

[0005] Here, the probe 21 is connected to terminals 13 provided at both ends of the car running detection relay 11 to transmit the operation signal of the car running detection relay 11 and the probe 2.
Numerals 2 are respectively connected to terminals 14 provided at both ends of the door closing detection relay 12 so as to take in operation signals of the door closing detection relay 12, respectively.

The recorder 20 includes probes 21 and 22 for detecting the operating state of an operation control relay (not shown) necessary for investigating the cause of the door opening failure in the operation control panel 10 when investigating the cause of the door opening failure. Are provided with a plurality of different probes (not shown).
When 0 moves, operation signals of the plurality of operation control relays are input to the recorder 20 via these probes and recorded.

In the conventional method for detecting a door-open failure of an elevator constructed as described above, the condition (trigger condition) for moving the recorder 20 is the ON / OFF state signal of the car travel detection relay 11 and the door-close detection relay 12. The recorder 20 moves when the specified trigger condition is satisfied (when specified state signals are input from the car running detection relay 11 and the door closing detection relay 12, respectively). ing.

For example, a trigger signal for moving the recorder 15 is a condition signal for turning off the car traveling detection relay 2 and a condition signal for turning on the door closing detection relay 20 as a prescribed condition of the door opening failure. If the AND condition is satisfied, this condition is satisfied even if the car arrives at the landing floor and performs the door opening operation if there is no door opening failure. While the prescribed condition is satisfied, the recorder 15 moves to record the operation signal of the operation control relay.

[0009]

As described above, in the conventional method for detecting a door-open failure of an elevator, the door-opening operation is performed to determine the cause of the door-open failure of the elevator, and the operation of the operation control relay at the time of the door-open failure is performed. If you want the signal to be recorded on a recorder,
The signal condition (trigger condition) for moving the recorder is specified in the recorder. After all, regardless of the presence or absence of the door opening failure of the elevator, each time the door opening operation is performed, the above-mentioned prescribed condition is satisfied. The recorder 15 moves to record the operation signal of the operation control relay.

Therefore, in a so-called non-reproducible door opening failure in which the door opening operation is normally performed and no abnormality can be confirmed even if the door opening operation is performed again at the time of the door opening / closing inspection, the cause of the elevator door opening failure is investigated. Therefore, even if the door-opening operation is repeatedly performed in the failure inspection, only the data in the case of the normal door-opening operation is recorded on the recorder, and the necessary data at the time of the door-opening failure cannot be easily collected.

Therefore, it is necessary to replenish the recording paper many times and repeat the door failure inspection many times until the data at the time of the door opening failure necessary for investigating the cause of the door opening failure is obtained. It was difficult to determine the cause of the door-opening failure.

The present invention has been made in order to solve such a problem. A trigger signal is provided to a recorder only when a door opening / closing device has failed, and a signal state of an operation control relay when the door opening / closing device has failed is provided. An object of the present invention is to provide a failure detector for an elevator door opening / closing device that can be easily recorded on a recorder.

[0013]

A failure detector for an elevator door opening / closing device according to the present invention includes a car running detecting means for detecting running of an elevator car and a car running based on an output of the car running detecting means. A short-time measuring means for starting measurement of a predetermined time when the car stops, and a predetermined predetermined time longer than the time measured by the short-time measuring means when the car stops running based on the output of the car running detecting means. Long time measurement means for starting time measurement, signal output means for outputting a signal from the short time measurement means ending measurement to the long time measurement means ending measurement, and door closing of the elevator door Door closing detection means for detecting a state, and recording an operation signal of an operation control relay of an operation control panel of the elevator while a signal is output from the signal output means and the door closing detection means. Total was to allow operation.

Further, the short time measuring means is constituted by a first timed relay, and the long time measuring means is constituted by a second timed relay different from the first timed relay, and the signal output means is constituted by a second timed relay. A time switch composed of a series body in which a normally closed contact of the first timed relay and a normally open contact of the second timed relay are connected in series is provided between the electrodes.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is an explanatory diagram of a failure detector of the elevator door opening and closing device according to the first embodiment. In FIG. 1, as a new configuration with respect to the conventional example, reference numeral 15 denotes a power output terminal of the operation control panel 10, which is a terminal for supplying power to a failure detector described later.

Reference numeral 30 denotes a failure detector of the door opening / closing device. 3
Reference numeral 1 denotes a detection relay having a function similar to that of the car travel detection relay 11. Terminals 32 provided at both ends of the detection relay 31 are respectively connected to the terminals 14, so that the detection relay 31 and the car travel detection relay 11 are connected in parallel. I am in the body. Each of the detection relay 31 and the car traveling detection relay 11 serves as a car traveling detecting means.

Reference numeral 33 denotes a power input terminal of the failure detector 30. The power input terminal 33 is connected to the power output terminal 15 so that the failure detector 30 is supplied with power from the operation control panel 10. ing.

Reference numeral 34a denotes a power supply terminal for supplying power for energizing a first timed relay T1 (not shown); 34b, a start signal input section for energizing the first timed relay T1; Of the timed relay T1 (make contact, ie, contact b).

Here, when the first timed relay T1 is energized by applying a start signal to the start signal input portion 34b, the normally closed contact 34c is opened and the first timed relay T1 is opened for a predetermined time (for example, 3 seconds). Seconds), it returns to the closed state again after the lapse of time. Then, the first timed relay T1 forms a short-time measuring means.

A power supply terminal 35a for supplying power for energizing a second timed relay (not shown) is provided.
5b is a start signal input section for energizing the second timed relay, and 35c is a normally open contact (break contact, ie, a contact) of the second timed relay.

Here, when the start signal is applied to the start signal input portion 35b and the second timed relay T2 is energized, the normally open contact 35c is closed, and the second timed relay T2 is closed for a predetermined time (for example, 4 seconds). Seconds), the state returns to the open state again. Then, the second timed relay T2 forms a long time measuring means.

The power terminal 34a and the power terminal 35a
Are connected in parallel to form a parallel body, and both ends of the parallel body are connected to terminals 33 so that power is supplied from the operation control panel 10 of the elevator.

The start signal input section 34a and the start signal input section 35a are connected in parallel to form a parallel body,
Further, a normally open contact (break contact or a contact) 31b of the detection relay 31 is connected in series to the parallel body to form a gate signal input section.

Here, when the car is stopped and the car is not traveling, the normally open contact (break contact or a contact) 31b is opened, so that the start signal input section 34a and the start signal input section are connected to the gate signal input section. A start signal is applied to each of the sections 35a, and the first timed relay T1 and the second
Each of the timed relays T2 performs a time count.

The normally closed contact 34c and the normally open contact 35c
And the first timed relay T
A time switch for extracting an output signal between 3 seconds and 4 seconds after the activation of the first and second time relays T2 is configured. This time switch is provided between the power input terminals 33 to provide signal output means. The pulse voltage signal is extracted from the failure detector 30 via the signal output terminal 36 during the above-described time.

The signal output terminal 36 is connected to the recorder 20, and the pulse voltage signal extracted from the failure detector 30 to the recorder 20 is one of trigger signals for starting the recorder 20.

Here, the aforementioned first timed relay T1
Can be configured by the internal connection diagram shown in FIG. Here, 34d indicates a connection terminal of the first timed relay T1. The same applies to the second timed relay T2.

The probe 21 is connected to the signal output terminal 36.
And the pulse voltage signal described above,
The probes 22 are respectively connected to terminals 14 provided at both ends of the door-closed detection relay 12 so as to capture the operation signals of the door-closed detection relay 12 into the recorder 20.

Here, a trigger condition for moving the recorder 20 is defined as an AND condition between the pulse voltage signal and the energized state signal of the door closing detection relay 12.

Then, similarly to the conventional example, the recorder 20
In order to detect the operation state of an operation control relay (not shown) in the operation control panel 10 at the time of investigating the cause of the door-open failure, as shown in FIG. When the recorder 20 moves, the operation signals of these operation control relays are input to the recorder 20 via the probes 23 and 24 and recorded.

Since the recorder 20 is operated only when the door opening / closing device fails as described later, even if the failure is not reproducible, the recorder 20 records the operating state of the operation control relay at the time of failure. The recorder 20 is connected to the operation control panel 10 as described above from a normal operation state in which the door opening and closing device has no failure.

In the fault detector of the elevator door opening / closing device according to the first embodiment configured as described above, when the car stops running and stops, the car running detection relay 11
Is in the deactivated OFF state.

At the same time, the detection relay 31 is also deenergized and turned off, that is, the contact 31b is opened (cut off), and the start signal input section 34a and the start signal input section 3 are turned off.
A start signal is applied to 5a, and the first time relay T1 and the second time relay T2 are energized to perform time counting respectively.

The first timed relay T1 is energized by applying a start signal to the start signal input section 34b (ON).
State) and the normally closed contact 34c are opened, time-counted, deenergized after 3 seconds have elapsed (OFF state), and return to the closed state again.

When the second timed relay T2 is energized by applying a start signal to the start signal input portion 35b (ON state), the normally open contact 35c is closed, and 4 seconds elapse after the time count is performed. Later, it is deenergized (OFF state) and returns to the closed state again.

As a result, the first timed relay T1 and the second timed relay T1
The pulse voltage signal can be taken out from the terminal 36 between 3 seconds and 4 seconds after the activation of the timed relay T2.

In general, if the door opening / closing device operates normally without failure, the door will be closed when three seconds (or two seconds) have elapsed after the car arrived at the target landing floor. Since the door is open, if the door does not open three seconds after arriving at the landing floor, it is considered that the door opening / closing device has failed.

Therefore, when the door opening / closing device is out of order, as shown in FIG. 4, the car stops running and 3 seconds after the first timed relay T1 and the second timed relay T2 are energized. The pulse voltage signal described above can be taken into the recorder 20 from the terminal 36 via the probe 22 during a period of 4 seconds from the following time. The operation signal of the detection relay 12 is also taken into the recorder 20 via the probe 22.

In this case, the above-described trigger condition for starting the recorder 20 is satisfied.

FIG. 5 shows an example in which the failure detector records the operation signal of the operation control relay when a door opening failure occurs. In FIG. 5, reference numerals 40a to 40e denote operation control relay signals necessary for investigating the cause of a failure in the door opening and closing device.

In this case, if the door is closed 1.9 seconds after the car arrives at the target landing floor, it is assumed that the door opening / closing device has failed, and the car travels. After the stop, the door closes between 1.9 seconds after the first timed relay T1 measures the time and 4 seconds after the time is measured by the second timed relay T2. An example is shown in which data is recorded in the case where there is data.

When the car stops running and the car running detection relay 11 is turned off, the first timed relay T1 and the second timed relay T2 start measuring time of 1.9 seconds and 4 seconds, respectively. .

1.9 after the car stops running.
After the elapse of the second, the time measurement by the first timed relay T1 is completed, and as shown in FIG. 5, a pulse signal of the ON state is obtained via the probe 22, and the door is still closed in this time period. Since the continuation is continued, a trigger condition for moving the recorder 30 is satisfied.

The signal states 40a to 40e of the operation control relays are recorded on the recorder while the trigger condition is satisfied (from 1.9 seconds after the car stops running to 4 seconds). You.

Therefore, according to the first embodiment, the car running detecting means 11 for detecting the running of the car of the elevator.
A short-time measuring means T1 for starting measurement of a predetermined time when the car stops traveling based on an output of the car traveling detecting means 11; and a car traveling based on an output of the car traveling detecting means 11. When stopped, the long time measuring means T2 starts measuring for a predetermined time longer than the time measured by the short time measuring means T1, and the long time measuring means T2 measures after the short time measuring means T1 finishes measuring. Signal output means for outputting a signal until the operation is completed, and a door-close detection means 12 for detecting a door-closed state of an elevator door, while the signal output means and the door-close detection means 12 output a signal. The recorder 20 that records the operation signal of the operation control relay of the elevator operation control panel is made operable, so that the recorder 20 is triggered only when the door opening / closing device fails. Giving items, the operating state of the operation control relays failure be non-reproducibility of the failure can be easily recorded on recorder 20.

Further, the short time measuring means is constituted by a first time relay T1, and the long time measuring means is constituted by a second time relay T2 different from the first time relay T1. The output means is configured by providing a timed switch composed of a series body in which a normally closed contact 34c of the first timed relay T1 and a normally open contact 35c of the second timed relay T2 are connected in series between the electrodes. An operation signal is supplied to the recorder 20 only when the switchgear has failed, and the recorder 20 can easily record the operation state of the operation control relay at the time of failure even if the failure is non-reproducible.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a failure detector of an elevator door opening / closing device according to Embodiment 1.

FIG. 2 is an internal connection diagram of a first timed relay T1.

FIG. 3 is a diagram showing a state of connection between a recorder 20 and a failure detector 30.

FIG. 4 is a time chart illustrating the operation of the failure detector 30.

FIG. 5 is a diagram showing operation signals of an operation control relay recorded in a recorder 20.

FIG. 6 is an explanatory diagram of a conventional method for detecting a door opening failure of an elevator.

[Explanation of symbols]

15 power output terminal, 30 failure detector, 31 detection relay, 31b normally closed contact, 32 terminal, 33 power input terminal, 34a power supply terminal, 34b start signal input section, 34c normally closed contact, 35a power supply terminal, 35
b Start signal input section, 35c normally open contact, 36 signal output terminals, 40a to 40d operation control relay.

Claims (2)

[Claims] 1. A car running detecting means for detecting running of an elevator car, and a short time measurement for starting a measurement of a predetermined time when the car stops running based on an output of the car running detecting means. Means, and a long time measuring means for starting measurement of a predetermined time longer than a time measured by the short time measuring means when the car stops traveling based on an output of the car running detecting means; A signal output unit that outputs a signal from the time measurement unit ending the measurement to the long time measurement unit ending the measurement, and a door closing detection unit that detects a door closing state of the elevator door. An elevator operable to record an operation signal of an operation control relay of an operation control panel of an elevator while a signal is output from the signal output means and the door closing detection means. Detector for door opening / closing device. 2. The short time measuring means comprises a first time relay, and the long time measuring means comprises a second time relay different from the first time relay, and The signal output means is characterized in that a time switch composed of a series body in which a normally closed contact of the first time relay and a normally open contact of the second time relay are connected in series is provided between the electrodes. The failure detector for an elevator door opening / closing device according to claim 1.