JPH10236744A - Maintenance device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an efficiency decrease of maintenance work in a device, wherein in case of transmitting an abnormality generation signal from an abnormality supervisory device in a building side to a supervisory center side by a factor except a trouble, when an elevator engineer comes to a building generating abnormality, by operating an elevator normally, the factor transmitting the abnormality generation signal can not be specified. SOLUTION: A maintenance device 21 connected to a control device 20 is provided with a latch circuit 23 electrically holding a factor of an abnormality generation signal and a display part 24 displaying this factor. In this way, by holding this factor in the latch circuit 23 of the maintenance device 21 in a building side, by displaying this factor in the displaying means 24, the factor of the abnormality generation signal, transmitted to a side of a supervisory center 14 based on the factor except a trouble, can be easily confirmed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for monitoring an abnormal operating condition of a building elevator.

[0002]

2. Description of the Related Art FIG. 5 schematically shows a conventional elevator maintenance device. A door switch 3 for detecting the open / closed state of the car door 2 is provided on a car door 2 of an elevator car 1 that moves up and down in a hoistway (not shown). The door switch 3 is an open / close detection switch configured to close its contact when the car door 2 is closed. The landing doors 15 at each stop floor are opened and closed in conjunction with the car door 2, and the car door 2 and the landing door 15 shown in FIG. 5 are in a half-open state.

An operation switch 4 for instructing the car 1 on a destination is provided in the car 1. On the other hand, a call button switch 6 for calling the elevator car 1 is provided at the landing 5 at each stop floor (a part of which is shown in FIG. 5). A safety shoe 7 is provided at the tip of the car door 2 to prevent a person or an object from being pinched when the car door 2 and the landing door 15 are closed. The safety shoe 7 is a safety mechanism for reversing the operation and opening these doors when the car door 2 and the landing door 15 are pressed by being hit by a person or an object when the car door 2 and the landing door 15 are closed. Has a built-in safety switch 8 for opening the car door 2 when the safety shoe 7 is pressed.

Although these switches are different from the intended use, these switches are actuated by holding down the operation switch 4 or the call button switch 6 while the car door 2 and the landing door 15 are open. While doing,
These doors are kept open (the car door 2 and the landing door 15 are completely open). Further, these doors are kept open even when the safety switch 8 is operated by keeping the safety shoe 7 pressed. As described above, if the operation switch 4, the call button switch 6, and the safety switch 8 are continuously operated, the car door 2 and the landing door 15 can be kept open.

[0005] The door switch 3, the operation switch 4 and the safety switch 8 are connected to a control device 11 via a junction box 9 and a signal cable 10.
It is connected to a control device 11 via a signal cable 10. The control device 11 is connected to an abnormality monitoring device 12, and furthermore, the abnormality monitoring device 12 is connected to a telephone line 13.
Through the monitoring center 14.

[0006] State signals indicating the operating states of the door switch 3, the operation switch 4, the call button switch 6, and the safety switch 8 are managed by the control device 11. Control device 1
1 opens and closes the car door 2 and the landing door 15 based on opening / closing commands from the operation switch 4, the call button switch 6 and the safety switch 8, and opens and closes the elevator car 1 based on the opening / closing detection signal from the door switch 3. It controls the operation.

The control device 11 has a function of detecting the abnormality of the operating condition of the elevator and integrating the duration of the open state of the car door 2. Therefore, as the door switch 3, the operation switch 4, the call button switch 6, or the safety switch 8 continues to operate, the car door 2 and the landing door 15 are continuously opened for a certain period of time (for example, 3 to 5 minutes). When the control device 11 detects that the car 1 is operating, the control device 11 determines that the operating condition of the car 1 is abnormal, and transmits an abnormality occurrence signal from the abnormality monitoring device 12 to the monitoring center 14 via the telephone line 13.

When the elevator abnormality signal is transmitted to the monitoring center 14 in this manner, an elevator engineer conventionally goes to the building and connects the portable inspection device 16 to the elevator abnormality monitoring device 12 in which the abnormality has occurred. Thus, it was determined whether or not an abnormality such as a failure occurred in the elevator.

[0009]

If the cause of the abnormality occurrence signal is caused by a failure of the elevator, the cause of the failure of the elevator can be detected by using the portable inspection device 16 carried by the elevator technician. However, as described above, when the elevator user continues to operate the operation switch 4, the call button switch 6, or the safety switch 8 for a certain period of time or more, and the open state of the car door 2 and the landing door 15 elapses for a certain period of time, When the elevator technician rushes to the building when the abnormality occurrence signal is transmitted to the monitoring center 14, the elevator is operating normally.
The cause of transmitting the abnormality occurrence signal to the monitoring center 14 could not be determined, resulting in a decrease in the efficiency of maintenance work.

[0010] Accordingly, an object of the present invention is to store and display an abnormality occurrence signal on the building side when an abnormality occurrence signal is transmitted to the monitoring center side due to a factor other than a failure as described above. An object of the present invention is to provide an elevator maintenance device capable of easily determining a factor of a signal.

[0011]

SUMMARY OF THE INVENTION An elevator maintenance apparatus according to the present invention includes an open / close command switch for opening / closing a car door and a landing door of an elevator, an open / close detection switch for detecting the open / closed state of these, and an open / close command. Control means for controlling the open / close state of the car door and the landing door based on the opening / closing command from the switch, and controlling the operation of the elevator car based on the open / close detection signal from the open / close detection switch; Based on the state signal of each switch from the control means when the open state continues for a certain time or more, holding means for holding a factor when the open state of the car door and the landing door continues for a certain time or more, and the holding means Display means for displaying the held factor and transmission means for transmitting an abnormality occurrence signal to the monitoring center side.

The open / close command switch is a safety switch built in a safety shoe provided at the tip of the car door to prevent the car door and the landing door from being pinched.

The open / close command switch is a call button switch of an elevator car arranged at each stop floor.

The opening / closing command switch is an operation switch provided in the car for giving an operation command to the car of the elevator.

The open / close detection switch is a door switch that operates according to the opening / closing of the car door.

Further, the holding means includes a canceling means for canceling the held factor.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 FIG. 1 is a block diagram schematically showing an elevator maintenance device according to Embodiment 1 of the present invention. FIG. 2 is a flowchart showing the operation of the elevator maintenance device according to Embodiment 1 of the present invention.
In FIG. 1, the control device 20 and the maintenance device 21
Except for the structure (including the built-in latch circuit 22 and the like), the structure is the same as that of the conventional elevator maintenance device shown in FIG. 5, and a description thereof will be omitted.

In FIG. 1, a door switch 3, an operation switch 4 and a safety switch 8 are connected to a control device 20 via a junction box 9 and a signal cable 10, and a call button switch 6 is connected via a signal cable 10. Control device 20
It is connected to the. Further, the control device 20 is connected to the abnormality monitoring device 12, and is further connected to the abnormality monitoring device 12.
Are connected to a monitoring center 14 through a telephone line 13. Further, a maintenance device 21 is connected to the control device 20. The maintenance device 21 includes an interface 22, a latch circuit 23 as a holding unit, and a display unit 24 as a display unit. Furthermore, the latch circuit 23 includes a reset switch 25 serving as a releasing unit.

Since the operation switch 4, the call button switch 6 and the safety switch 8 can be used to keep the car door 2 and the landing door 15 open,
It has a function as an open / close command switch for opening / closing the car door 2 and the landing door 15. The door switch 3 is
It has a function as an open / close detection switch for detecting the open / close state of the car door 2 and the landing door 15.

The state signals indicating the operating states of the door switch 3, the operation switch 4, the call button switch 6, and the safety switch 8 are all managed by the control device 20. The control device 20 has a function of transmitting the cause of the abnormality in the operation state of the elevator to the maintenance device 21. The control device 20 controls the opening and closing of the car door 2 and the landing door 15 based on the opening and closing commands from the operation switch 4, the call button switch 6 and the safety switch 8, and the opening and closing state of the car door 2 and the landing door 15. The operation of the elevator car 1 is controlled based on the open / closed detection signal of the door switch 3 shown in FIG.

The control device 20 has a function of detecting the abnormality of the operating state of the elevator and integrating the duration of the open state of the car door 2. Therefore, as the door switch 3, the operation switch 4, the call button switch 6, or the safety switch 8 continues to operate, the car door 2 and the landing door 15 are continuously opened for a certain period of time (for example, 3 to 5 minutes). When the control device 20 detects that the car 1 is operating, the control device 20 determines that the operating condition of the car 1 is abnormal and transmits an abnormality occurrence signal from the abnormality monitoring device 12 to the monitoring center 14 through the telephone line 13. At this time, the abnormality occurrence signal is also transmitted from the abnormality monitoring device 12 to the latch circuit 23.

The interface 22 is for taking in status signals from the control device 20 indicating the operating states of the door switch 3, the operation switch 4, the call button switch 6 and the safety switch 8. The latch circuit 23 serving as a holding unit is connected to the interface 22 and the abnormality monitoring device 12. When the abnormality occurrence signal is transmitted from the abnormality monitoring device 12, the latch circuit 23
This is a circuit for electrically holding the cause of the abnormality transmitted from 0. The reset switch 25 provided in the latch circuit 23 is for canceling the cause of the abnormality that the latch circuit 23 electrically holds. The display unit 24, which is a display unit, includes an LED for displaying the content electrically held by the latch circuit 23 for each factor.
It has. The display unit 24 continues to display the cause of the abnormality held by the latch circuit 23 by the reset switch 25 until the cause is canceled.

The operation of the elevator maintenance device according to the first embodiment of the present invention will be described below with reference to the flowchart of FIG. When the elevator maintenance device of the present invention is operating (START), the elevator car 1 is operated (S20), and the car 1 stops at the stop floor (S21). Then, it is determined whether or not the safety switch 8 is operated while the car door 2 is open together with the landing door 15 (S22). When the safety switch 8 is operated, the control device 20 adds up the operation time of the safety switch 8 (S23).

Next, it is determined whether or not the operation state of the safety switch 8 has elapsed for a predetermined time (3 to 5 minutes) (S2).
4). If the predetermined time has elapsed, the control device 20 transmits the activation of the safety switch 8 to the latch circuit 23, and the activation of the safety switch 8 is electrically held in the latch circuit 23 ( At the same time as S25), an abnormality occurrence signal is transmitted from the abnormality monitoring device 12 to the monitoring center 14 (S26). Further, under the control of the control device 20, the operation of the safety switch 8 is transmitted from the latch circuit 23 to the display unit 24 (S27), and the display unit 24 displays that the safety switch 8 has been activated for a certain period of time or longer.
LED is turned on (S28).

If it is determined in S22 that the safety switch 8 is closed, the flow returns to S20. If the predetermined time has not elapsed in S24,
The latch circuit 23 does not operate (S29), and the flow ends (END).

As described above, even when the safety switch 8 is activated for a certain period of time by, for example, the elevator user continuing to press the safety shoe 7, the latch circuit 23 electrically holds that the safety switch 8 is activated. And
Further, the fact that the safety switch 8 has been operated is displayed on the display circuit 24, so that the elevator technician who has received the abnormality occurrence signal at the monitoring center 14 can easily confirm the cause of the abnormality occurrence signal on site, and The efficiency of maintenance work can be greatly improved.

Embodiment 2 FIG. FIG. 3 is a flowchart showing the operation of the elevator maintenance device according to the second embodiment. Embodiment 2 relates to the operation of the elevator maintenance device when the operation switch 4 installed in the elevator car 1 is kept pressed while the car door 2 and the landing door 15 are open. In this case, the structure and the like of the apparatus all conform to the first embodiment.

When the elevator maintenance device of the present invention is operating (START), the elevator car 1 is operated (S30), and the car 1 stops at the stop floor (S31). Then, while the car door 2 is open together with the landing door 15, it is determined whether or not the operation switch 4 is pressed (S32). If the operation switch 4 is operated by being pressed, it is further determined whether or not the door switch 3 is open (S33). If the door switch 3 is open, the control device 20 adds up the operation time of the door switch 3 (S34).

Next, it is determined whether or not the operation state of the door switch 3 has elapsed for a predetermined time (3 to 5 minutes) (S3).
5). If the predetermined time has elapsed, the operation of the operation switch 4 is transmitted from the control device 20 to the latch circuit 23, and the operation of the operation switch 4 is electrically held in the latch circuit 23 ( At the same time as S36, an abnormality occurrence signal is transmitted from the abnormality monitoring device 12 to the monitoring center 14 (S37). Further, under the control of the control device 20, the fact that the operation switch 4 has been operated is transmitted to the display unit 24 (S38), and the LED of the display unit 24 that indicates that the operation switch 4 has been operated is turned on (S39).

If it is determined in S32 that the operation switch 4 has not been pressed, the flow returns to S30, and if the door switch 3 has not been opened in S33, the flow returns to S30. Further, if the predetermined time has not elapsed in S35, the latch circuit 23 does not operate (S40), and the flow ends (END).

As described above, for example, when the elevator user keeps pressing the operation switch 4, the door switch 3
When the operation of the operation switch 4 has been performed for a certain period of time, the latch circuit 23 electrically holds that the operation switch 4 has been activated, and furthermore, the display circuit 24 displays that the operation switch 4 has been activated. The elevator technician who has received the generated signal can easily confirm the cause of the abnormality generated signal on site, and can greatly improve the efficiency of elevator maintenance work.

Embodiment 3 FIG. FIG. 4 is a flowchart showing the operation of the elevator maintenance device according to the third embodiment. Embodiment 3 relates to the operation of the elevator maintenance device when the call button switch 6 installed in the elevator hall 5 is kept pressed while the car door 2 and the hall door 15 are open. In this case, the structure and the like of the apparatus all conform to the first embodiment.

When the elevator maintenance device of the present invention is operating (START), the elevator car 1 is operated (S50), and the car 1 stops at the stop floor (S51). Then, it is determined whether or not the call button switch 6 is operated while the car door 2 is open together with the landing door 15 (S52). If the call button switch 4 has been pressed, it is further determined whether or not the door switch 3 is open (S53). When the door switch 3 is open, the control device 20 adds up the operation time of the door switch 3 (S54).

Next, it is determined whether or not the operation state of the door switch 3 has elapsed for a predetermined time (3 to 5 minutes) (S5).
5). If the predetermined time has elapsed, the operation of the call button switch 6 is transmitted from the control device 20 to the latch circuit 23, and the operation of the call button switch 6 is electrically held in the latch circuit 23. (S56), an abnormality occurrence signal is sent from the abnormality monitoring device 12 to the monitoring center 1
The information is transmitted to the fourth side (S57). Further, under the control of the control device 20, the operation of the call button switch 6 is transmitted to the display unit 24 (S58), and the LED of the display unit 24 that indicates that the call button switch 6 has been operated is turned on (S5).
9).

If it is determined in step S52 that the call button switch 6 has not been pressed, the flow returns to step S50. If it is determined in step S53 that the door switch 3 has not been opened, the flow also proceeds. It returns to S50. Further, if the predetermined time has not elapsed in S55, the latch circuit 23 does not operate (S60), and the flow ends (E
ND).

As described above, for example, when the elevator user keeps pressing the call button switch 6, the door switch 3
Is activated for more than a predetermined time, the latch circuit 23 electrically holds that the call button switch 6 has been activated, and furthermore, the display circuit 24 displays that the call button switch 6 has been activated. Thus, the elevator engineer who has received the abnormality occurrence signal can easily confirm the cause of the abnormality occurrence signal on site, and the efficiency of elevator maintenance work can be greatly improved.

[0037]

The maintenance device for an elevator according to the present invention includes an open / close command switch for opening / closing a car door and a landing door of an elevator, an open / close detection switch for detecting the open / closed state of these, and opening / closing of the open / close command switch. A control means for controlling the open / close state of the car door and the landing door based on the command, and controlling the operation of the elevator car based on the open / close detection signal from the open / close detection switch, and a constant open state of the car door and the landing door. Based on a state signal of each switch from the control unit when the time has continued for more than a time, holding means for holding a factor when the open state of the car door and the landing door has continued for a certain time or more, and the holding means hold A display means for displaying the cause and a transmission means for transmitting the abnormality occurrence signal to the monitoring center side, so that the factor of the abnormality occurrence signal is held. Can be readily ascertained from the preliminary display means, it is possible to greatly improve the efficiency of maintenance work.

Further, the opening / closing command switch is a safety switch built in a safety shoe provided at the end of the car door to prevent the car door and the landing door from being pinched, so that the operation of the safety switch is continued. It can be confirmed that this causes an abnormality occurrence signal.

Further, since the opening / closing command switch is a call button switch of an elevator car disposed at each stop floor, it is possible to confirm that the call button switch causes an abnormality occurrence signal.

Since the open / close command switch is an operation switch provided in the car to issue an operation command to the car of the elevator, it is possible to confirm that the operation switch causes an abnormality occurrence signal. .

Further, since the open / close detection switch is a door switch that operates according to the opening / closing of the car door, the open / closed state of the car door can be reliably detected.

Further, since the holding means includes a canceling means for canceling the held factor, the maintenance work of the elevator can be repeatedly performed.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a configuration of an elevator maintenance device according to Embodiment 1 of the present invention.

FIG. 2 is a flowchart showing an operation of the elevator maintenance device according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing an operation of the elevator maintenance device according to the second embodiment of the present invention.

FIG. 4 is a flowchart showing an operation of the elevator maintenance device according to Embodiment 3 of the present invention.

FIG. 5 is a conceptual diagram showing a configuration of a conventional elevator maintenance device.

[Explanation of symbols]

2 car door, 3 door switch (open / close detection switch), 4
Operation switch (open / close command switch), 6 call button switch (open / close command switch), 8 safety switch (open / close command switch), 12 abnormality monitoring device (transmission means), 15
Landing door, 20 control device (control means), 23 latch circuit (holding means), 24 display section (display means).

Claims (6)

[Claims] An open / close command switch for opening / closing a car door and a landing door of an elevator, an open / close detection switch for detecting an open / close state of the car door and a landing door, and an open / close detection switch for detecting the open / close state thereof. Control means for controlling the opening / closing state of the landing door and controlling the operation of the elevator car based on the opening / closing detection signal from the opening / closing detection switch; and when the opening state of the car door and the landing door has continued for a predetermined time or more. Holding means for holding a factor when the open state of the car door and the landing door continues for a certain period of time or more based on the state signal of each switch from the control means, and a factor held by the holding means. A maintenance device for an elevator, comprising: display means for displaying an error signal; and transmission means for transmitting an abnormality occurrence signal to a monitoring center. 2. The elevator according to claim 1, wherein the open / close command switch is a safety switch built in a safety shoe provided at a tip of the car door to prevent the car door and the landing door from being pinched. Maintenance equipment. 3. The elevator maintenance device according to claim 1, wherein the open / close command switch is a call button switch of an elevator car disposed on each stop floor. 4. The elevator maintenance device according to claim 1, wherein the open / close command switch is an operation switch provided in the car to issue an operation command to the elevator car. 5. The elevator maintenance device according to claim 1, wherein the open / close detection switch is a door switch that operates according to the opening / closing of the car door. 6. The elevator maintenance device according to claim 1, wherein the holding unit includes a release unit that releases the held factor.