JPH0262395A - Monitor for elevator system - Google Patents

Abstract

PURPOSE:To aim at the operation efficiency impediment and trouble prevention of an elevator due to tempering or the like by installing an alarm means and a report means for a control station respectively at a time when a safety device operates the first specified frequency at the specified time or within the time and further continuously operates the second specified frequency at the second specified time or within the time. CONSTITUTION:When a piece of paper is put between a door safety shoe and a door and/or a load is placed in front of the safety shoe and thereby a close-door is forcedly prevented, a switch 1 is released, a detection relay 2 is also released out of a state of this switch 1 and a contact 2A is closed in circuit, so that an auxiliary relay 4 is energized. Next, when a normally opened contact 4A is closed by this energization of the auxiliary relay 4 and a first counting device 6 starts it counting whereby the first specified frequency or the first specified time is operated within the first specified time, a contact 6A is closed and thereby caution is aroused by a buzzer 8 or a broadcasting set. When a second counting device 11 starts its counting and the second specified frequency or the second specified time is operated within the second specified time, a contact 11A is closed and it is reported to a control station by a report device 13.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a monitoring device for an elevator system, and particularly to a device suitable for monitoring tampering with a safety device provided on a door.

[Conventional technology]

In automatic elevators, a safety tissue is installed at the tip of the door for safety reasons, and the door can be forcibly reversed even if it is opened, so that the door will immediately close again when it is fully opened. Therefore, if forced reversal is repeated by these devices as a mischief, a large impact will be applied to the door mechanism, shortening its lifespan and possibly causing a failure. In order to solve this problem, for example, a door opening/closing control device disclosed in Japanese Patent Application Laid-Open No. 149039/1983 has been proposed.

[Problem to be solved by the invention]

By the way, the reality is that passenger elevators are generally not equipped with a door opening extension device that can open the door for a predetermined period of time when operated for cargo handling. In some cases, a piece of paper is intentionally placed between the door and the safety tissue to cause the safety tissue to operate, or a piece of luggage is placed in front of the safety tissue to forcibly prevent the door from closing. It is being Now, if you try to prevent the door from closing in this way, pieces of paper may fall inward and become locked, or the force of closing the door may cause the load to shift if it is not very heavy, causing the door to close. Due to the operation of the safety tissue, a gap is created between the door mechanism and the safety tissue, and as a result of the operation of the safety tissue, the forced reversal is repeated as described above, and a large impact is applied to the door mechanism, shortening its lifespan and causing failure.

Therefore, the present invention has been made in view of the above-mentioned circumstances, and its purpose is to alert the user to release the safety device when the safety device that prevents the closing operation of the door is intentionally activated. It is an object of the present invention to provide a monitoring device for an elevator system that is capable of determining a malfunction if the elevator system continues to operate.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a monitoring device for an elevator system, which includes a safety device provided at the tip of the door, which prevents the door from closing when the door is operated, and reverses the door when the door is about to close. , further comprising an alarm means for issuing an alarm when the safety device is activated for a first predetermined period of time or a first predetermined number of times within the first predetermined period of time; The configuration includes means for selectively establishing a line and notifying a predetermined management center when the operation is performed for a predetermined time or a second predetermined number of times within the second predetermined time.

[Effect]

Since the present invention has the above-mentioned configuration, if the safety device provided at the tip of the door that prevents the door from closing is intentionally operated for a long time, an alert is issued to urge release of the safety device. If the safety device continues to be activated, it will be considered a malfunction and will be fired at a designated control point.

It is possible to prevent the operating efficiency of the elevator from being impaired due to mischief, etc., and to prevent actual malfunctions caused by this.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram showing a monitoring device for an elevator system according to the present invention.

In the figure, 1 is a door safety switch that is installed at the tip of the door and, when activated, prevents the door from closing and reverses the closing door, and 2 detects the state of the door safety switch 1. Detection relay 2A is its normally closed contact, 4 is an auxiliary relay that responds to detection relay 2, 4
A and 4B are normally closed contacts, and 6 is an output when the door safety tissue is operated a first predetermined number of times (for example, 10 times) or for a first predetermined time within a first predetermined time (for example, 3 minutes). The first counting device that emits the signal, 6A and 6B are normally closed contacts that output signals, and 8 is an alarm device for alerting the person operating the door safety tissue 1. For example, a buzzer or a broadcasting device, etc. 11 is a second circuit that emits an output when operated a second predetermined number of times (for example, 30 times) or for a second predetermined time within a second predetermined time (for example, 8 minutes).
counting device, 11A is its output signal, a normally closed contact, 1
3 is determined to be a failure.For example, a maintenance company's monitoring center,
This is a reporting device that notifies a management office (or a management office in a building where an elevator is installed). 14 is a normally closed contact of a relay for confirming when the door is closed.

Next, the operation in the above configuration will be explained.

First, a piece of paper is placed between the door and the door safety tissue that prevents the door from closing and reverses the closing door.

Alternatively, by placing luggage in front of the safety tissue and forcibly preventing the door from closing, switch 1 is released, detection relay 2 is released from the state of switch 1, and
Since the contact 2A is closed, the auxiliary relay 4 is energized, and the normally closed contact 4A is energized, which closes the auxiliary relay 4, and the first counting device 6 starts counting. By emitting an output when operated a first predetermined number of times (e.g. 10 times) or for a first predetermined time within a predetermined number of times (e.g. 3 minutes), the contact 6A becomes a closed circuit and the buzzer 8 or It is possible to alert the person operating the door safety tissue using a broadcast device, etc. Also, 6B is closed by the output of the first counting device, and 4B is closed by the auxiliary relay that responds to the safety tissue detection relay 2. It becomes a circuit,
The second counting device No. 11 starts counting for a second predetermined time (
When the IIA is activated a second predetermined number of times (for example, 30 times) or for a second predetermined time within a period of 8 minutes, the IIA is closed, and the 13 notification devices notify the management center (for example, a maintenance company). The notification will be sent to the monitoring center or the control room in the building where the elevator is installed. Reference numeral 14 denotes a contact point which does not operate the first counting device 6 because it is in an open circuit when the door is closed.

According to this embodiment, when the safety device that prevents the closing operation of the door is intentionally activated, a notification is issued to release the device, and if the device continues, it is determined that the device is malfunctioning and an abnormality is issued. By activating the device, forced reversal by these devices will not be repeated due to mischief by the safety device. Furthermore, the life of the door mechanism is extended, and the causes of failure are reduced, which is effective.

〔Effect of the invention〕

According to the present invention, the above structure is adopted.

If the safety device installed at the tip of the door that prevents the door from closing is intentionally activated for a long period of time, a warning is issued to urge the safety device to be deactivated, and the safety device continues to be activated. It is possible to treat this as a malfunction and report it to the designated management office, which prevents mischief etc. from impairing the efficiency of elevator operation, and also prevents actual malfunctions from occurring due to mischief. It has the effect of preventing

[Brief explanation of the drawing]

The figure is a system diagram showing an embodiment of an elevator equipment monitoring device according to the present invention. 1... Door safety tissue switch, 2... Detection relay (door safety switch status), 2A...
Normally closed contact, 4... Auxiliary relay 4A of detection relay 2, 4
B... Normally open contact, 6... First predetermined time counting device, 6A, 6B... Normally open contact, 8... Alarm device, 11
...Second counting device, IIA...Normally open contact, 13...
- Notification device, 14... Normally closed contact for reset.

Claims (1)

[Claims] (1) A monitoring device for an elevator equipment including a safety device provided at the tip of the door, which prevents the door from closing when the door is operated, and causes the door to reverse operation when the door is about to close, wherein the safety device includes a first safety device. comprising an alarm means that issues an alarm when the alarm is operated for a predetermined time or a first predetermined number of times within the first predetermined time, and when the alarm is continuously operated for a second predetermined time; Alternatively, a monitoring device for an elevator system, comprising a reporting means for selectively establishing a line to a predetermined management center and notifying a predetermined management center when the elevator is operated a second predetermined number of times within the second predetermined time.