WO2018096617A1

WO2018096617A1 - Elevator failure detection device

Info

Publication number: WO2018096617A1
Application number: PCT/JP2016/084806
Authority: WO
Inventors: 秀彰有田
Original assignee: 三菱電機株式会社
Priority date: 2016-11-24
Filing date: 2016-11-24
Publication date: 2018-05-31

Abstract

An elevator failure detection device capable of responding when a malfunction occurs due to failure of an in-sliding-door switch inside an operating panel without the need for degradation prediction information of the operating panel in an elevator facility, the elevator failure detection device being provided with sliding door open/closed detection switches (5-1, 5-2) for detecting whether a sliding door (3) of an operating panel (1) is in an open state or a closed state, a manually operable in-sliding-door switch (4) disposed in the sliding door, and a failure determination unit (7) for determining that the in-sliding-door switch is in a failure state when the output signal of the in-sliding-door switch changes when it is detected that an output signal of a sliding door open/closed detection switch is in the closed state of the sliding door.

Description

Elevator failure detection device

The present invention relates to an elevator failure detection device, and more particularly to an elevator failure detection device that detects a failure of a car operation panel in an elevator car.

The car operation panel in the elevator car is equipped with a switch for elevator managers or maintenance personnel (hereinafter referred to as a sliding door switch), and this sliding door switch is locked to prevent operation by ordinary passengers. Is hung. Therefore, this car operation panel may interfere with the operation of the elevator if a malfunction occurs due to a failure of the internal sliding door switch.

On the other hand, conventionally, there is an elevator display device that predicts a deterioration state due to aging of a car connection device in an elevator car (for example, see Patent Document 1).
That is, this elevator display device predicts the deterioration state due to aging of the car connection device provided in the elevator car, and enables the display of the deterioration prediction information so that the car connection device provided in the elevator car can be displayed. A power measuring device that measures a value related to the electrical state of the car, a value related to the electrical state at the time of shipment of the car-connected device, is stored as an initial parameter, and the measured value and initial parameter of the car-connected device measured by the power measuring device are stored. And an elevator control panel that calculates deterioration prediction information due to secular change in the electrical state of the car connected device by performing regression analysis and displays the deterioration prediction information on a car indicator provided in the car. .

Moreover, there exists a thing which detects the failure of the door open detection switch of a refrigerator as a prior art of another field (for example, refer patent document 2).
That is, here, in the case of a function having a function of notifying that the door is opened for a long time, a buzzer or the like when the door open detection switch is broken, the lead wire is broken, or the door is intentionally kept open. However, if door opening is detected since the power is turned on at this time, it is determined that the door opening detection switch or lead wire is broken or disconnected, and the control circuit uses the electronic buzzer. By prohibiting the operation, the notification by the electronic buzzer or the like is prevented from being continued.

Japanese Patent Laid-Open No. 2015-124038 JP-A-8-291196

With respect to the above-mentioned Patent Document 1, it is necessary to have a current / voltage measuring device in order to calculate the deterioration prediction information of the equipment in the car, and the statistical calculation is complicated and it is difficult to guarantee the prediction accuracy.
In addition, Patent Document 2 targets a failure in door opening detection and cannot deal with a failure of a switch in the door.

This is not limited to the switch inside the sliding door in the car operation panel, but on the operation panel that covers the switch part so that the switch cannot be operated because there is usually a sliding door in elevator equipment such as a landing operation panel and a car rescue port. There was a similar problem.

The present invention has been made to solve such a problem, and can cope with a malfunction caused by a failure of a sliding door switch in the operation panel without requiring deterioration prediction information of the operation panel in the elevator equipment. It aims at providing the failure detection apparatus of an elevator.

In order to achieve the above object, an elevator failure detection apparatus according to the present invention includes a first switch for detecting whether a sliding door of an operation panel provided in an elevator facility is in an open state or a closed state. The second switch disposed in the sliding door and operable manually, and the output signal of the second switch changes when the output signal of the first switch detects the closed state of the sliding door. And a failure determination unit that determines that the second switch is in a failure state when it is detected.

In the present invention, the second switch for the elevator manager and maintenance personnel is stored in the sliding door, and when the sliding door locked so as not to be operated by a general passenger is closed, the first switch If the signal of the second switch in the sliding door changes despite being detected by the output signal, it is easy to determine that the switch in the sliding door is out of order without requiring special deterioration prediction information. It can be detected.

It is a front view which shows the car operation panel in Embodiment 1 of the failure detection apparatus of the elevator which concerns on this invention. It is a front view which shows the state which made the sliding door of the car operation panel in Embodiment 1 of the failure detection apparatus of the elevator which concerns on this invention half open. It is a circuit diagram of the failure determination part in the car operation panel in Embodiment 1 of the failure detection apparatus for elevators according to the present invention. FIG. 4 is a logical time chart of the failure determination unit shown in FIG. 3. It is a figure which shows the whole elevator system | strain in Embodiment 1 of the failure detection apparatus of the elevator which concerns on this invention. 4 is a logical time chart of a failure determination unit and a control device in

Embodiments

2 and 3 of the elevator failure detection apparatus according to the present invention, and partially includes the logical time chart of FIG. 4. It is a flowchart which shows the process after the nearest floor stop of the control apparatus in Embodiment 3 of the failure detection apparatus of the elevator which concerns on this invention.

Hereinafter, an embodiment of an elevator failure detection apparatus according to the present invention will be described with reference to the accompanying drawings.

Embodiment 1 FIG.
As shown in FIG. 1, the elevator car operation panel 1 is provided with a push button 2 and a sliding door 3 as usual. As shown in FIG. 2, a sliding door switch 4 is provided in the sliding door 3. The sliding door switch 4 can be manually operated only when the sliding door 3 is opened, and examples thereof include an operation / pause switch and a normal / inspection switch for managers and maintenance personnel. Although two sliding door switches 4 are shown in the illustrated example, they are actually a switch group consisting of three or more, but are simply referred to as “switches” here.

Furthermore, the sliding door 3 is provided with a sliding door open / close detection switch 5 composed of contacts 5-1 and 5-2. One contact 5-1 of the switch 5 is provided on the movable portion 3-1 side of the sliding door 3, and the other contact 5-2 is provided on the fixing portion 6 side for receiving and fixing the sliding door 3. Yes.

First, opening / closing of the sliding door 3 is detected by the switch 5. In this case, as shown in FIG. 2, when the sliding door 3, that is, the contact 5-1 on the movable part 3-1 side in the sliding door 3 and the contact 5-2 on the fixed part 6 side are separated, 3 is in an open state, and when the contacts 5-1 and 5-2 are in contact, the sliding door 3 is in a closed state.

The opening / closing state of the sliding door 3 is monitored by the switch 5 for detecting such an opening / closing state, and if it is recognized that the contacts 5-1 and 5-2 are in the open state for a certain period, it is regarded as abnormal. In other words, when it is erroneously determined that the sliding door 3 is actually open even though the sliding door 3 is closed, or when the sliding door 3 is actually left open (the sliding door switch 4 for managers and maintenance personnel is In any case, the switch 5 can be regarded as being in an abnormal state.

However, here, when the sliding door 3 is opened as shown in FIG. 2, since the contacts 5-1 and 5-2 are physically separated, it is erroneously determined that it is actually opened but closed. It is considered that there is no failure state.
Thus, on the assumption that the open / closed state of the sliding door 3 is normally recognized by the switch 5, a failure of the switch 4 in the sliding door, that is, a failure of the circuit of the switch 4 is detected as follows.

As shown in FIG. 3, the sliding door switch failure determination unit 7 uses the output logic signal of the sliding door switch 4 and the output logic signal of the switch 5 to determine the failure of the sliding door switch 4.
Then, the failure determination unit 7 is in the sliding door open state in which the switch 5 shown in FIG. 4 (1) is open, and the signal of the switch 4 in the sliding door changes from ON to OFF as shown in FIG. 4 (2) or (3). Or, when it changes from OFF to ON, it can be determined that the administrator has operated, so it is determined as normal. On the other hand, the failure determination unit 7 cannot be operated by the administrator when the signal of the switch 4 inside the sliding door changes as shown in (2) or (3) in the sliding door closed state where the switch 5 is closed. However, since it can be determined that the switch 4 has changed, it is determined to be abnormal.

4 (2) and (3), the two states of the sliding door switch 4 are shown when the output logic value of the switch 4 is set to be OFF when the sliding door is closed. This is because there is a case where the setting is turned on.

Embodiment 2. FIG.
When the sliding door switch failure determination unit 7 determines an abnormality as described above, as shown in FIG. 5, if the control device 14 receives this and is traveling in the elevator, the sliding door switch 4 as shown in FIG. 6. The car 10 is moved to the nearest floor 12-2 using the logic at the time when the logic of the output signal changes.

That is, the control device 14 causes the car 10 to travel to the nearest floor 12-2 in the illustrated example by the hoisting machine 12 via the rope 13 passing through the balancing weight 17 and the carriage 16, and the car door. Open 11 to allow passengers to leave.

Embodiment 3 FIG.
After arriving at the nearest floor 12-2, the control device 14 determines whether or not the elevator can be operated and whether or not to notify the manager / maintenance personnel as shown in FIG.

That is, the logic of the output signal of the sliding door switch 4 from the sliding door switch failure determination unit 7 is observed (step S1). Here, it is determined whether the output signal of the switch 4 has returned to the original state as shown in the time chart of FIG. 6 (2) or whether the switch signal remains changed as shown in the time chart of FIG. 6 (3). .

In step S1, after arriving at the nearest floor 12-2, the control device 14 observes the output signal of the switch 4 in the sliding door and determines whether or not it has returned to the state before this signal changed. As a result, when it is not returned (N), that is, when the output signal of the switch 4 remains changed as shown in FIG. 6 (3), the sliding door 3 is opened and the switch 4 is actually switched to the manager. A notification is issued to confirm whether or not there is (step S2).

The administrator who has received the confirmation performs the confirmation visually, for example, and returns the result to the control device 14. As a result, in the case of a response in which the switch 4 is actually switched (Y in step S3), that is, because the switch 4 has been switched, the output signal of the switch 4 has changed as shown in FIG. 6 (3). If it is found, the control device 14 returns the switch 4 to the original state and issues a notification that the elevator can be used (step S4).

In step S3, the control device 14 informed by the administrator that the switch 4 in the sliding door has not actually been switched, the output signal of the switch 4 is shown in FIG. Since the change remains as shown in 3), it is determined that the circuit of the sliding door switch 4 is broken, and the operation of the elevator is stopped and a maintenance staff is notified (step S5).

Returning to step S1, if the output signal of the switch 4 has returned to the state before the change, this return count is incremented by “1” (step S6), Step S7) is regarded as having returned to the normal state in which the elevator can be used, and the elevator is continuously usable (step S8).
If this is repeated a certain number of times, the sliding door switch 4 is repeatedly turned ON / OFF even though the sliding door 3 is closed, so the sliding door switch 4 circuit breaks down. The operation of the elevator is stopped because it is determined that the vehicle is operating, and an alarm is issued to the maintenance staff (step S5).

As described above, it is possible to easily detect the failure of the switch in the sliding door for the elevator manager and the maintenance staff, and it is possible to rescue the passenger even if the switch in the sliding door breaks down while the car is running.

In each embodiment of the present invention, not only the switch in the sliding door in the car operation panel, but also in the elevator equipment such as the landing operation panel and the rescue port of the car, there is usually a sliding door so that the switch portion cannot be operated. It can be applied to any operation panel that is covered.

1. Car operation panel, 2. Car button, 3. Sliding door, 3-1. Movable part, 4. Sliding door switch, 5. Sliding door open / close detection switch; 5-1, 5-2 contact, 6. Fixed part, 7. Sliding door switch failure judgment part. 10 car, 11 car doors, 12-1 to 12-3 landing floor, 13 ropes, 14 control device, 15 hoisting machine, 16 baffle, 17 counterweight.

Claims

A first switch for detecting whether a sliding door of an operation panel provided in the elevator equipment is in an open state or a closed state;
A manually operable second switch disposed in the sliding door;
When the output signal of the first switch detects the closed state of the sliding door and detects that the output signal of the second switch has changed, the second switch is in a failure state. An elevator failure detection device comprising a failure determination unit for determining.
The elevator failure detection apparatus according to claim 1, wherein the operation panel is an operation panel in an elevator car in the elevator facility.
The elevator failure detection apparatus according to claim 1, wherein the first switch includes a contact provided on a movable part of the sliding door and a contact provided on a fixed part that fixes the sliding door.
The control device further stops the elevator car at the nearest floor when the failure determination unit determines that the second switch is in a failure state while the elevator car is traveling. The failure detection device for an elevator according to 1.
The controller opens the sliding door to an administrator when the failure determination unit determines that the second switch is still in the failure state after stopping the elevator car on the nearest floor. A notification is issued to confirm whether or not the second switch has been switched. As a result, when the manager responds that the second switch has been switched, the second switch is sent to the manager. The elevator failure detection apparatus according to claim 4, wherein an alarm is issued to indicate that the elevator can be operated if the switch of 2 is restored.
The controller opens the sliding door to an administrator when the failure determination unit determines that the second switch is still in the failure state after stopping the elevator car on the nearest floor. An alarm is issued to confirm whether or not the second switch has been switched. As a result, when the manager responds that the second switch has not been switched, the operation of the elevator is stopped. The failure detection device for an elevator according to claim 4, which issues a notification to maintenance personnel.
When the failure determination unit determines that the second switch has recovered from the failure state after stopping the elevator car at the nearest floor, the control device The number of times the output signal is returned is accumulated, and the elevator can be operated until the accumulated number exceeds the threshold value. When the accumulated number exceeds the threshold value, the elevator operation is stopped and the maintenance personnel are stopped. The elevator failure detection device according to claim 4.