JP3327728B2 - Elevator failure alarm device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator malfunction alerting device which detects a door opening / closing malfunction in an elevator and issues an alarm to the outside.

[0002]

2. Description of the Related Art FIG. 10 is a system configuration diagram showing a conventional failure alarm device provided in an elevator control panel. In FIG. 10, a failure alarm device 10 includes a traveling command transmitting means 10A for transmitting a traveling command based on an input signal of a car call 12 or a hall call 13, and a failure detection timer for starting a counting operation based on the traveling command. 10B, a timer cancel signal sending means 10C for sending a timer cancel signal when the elevator running signal 14 and the door opening signal 15 are sequentially input, and the timer is set within the expiration of the failure detection timer 10A due to an abnormality in the elevator. An alarm device 10D that issues an external alarm 20 to a management company or the like based on the count-out output of the failure detection timer 10B when the cancel signal is not transmitted.

[0003] That is, the conventional failure alarm device 10 shown in FIG. 10 is a car call 12 or a hall call 1 of an elevator.
When the signal of No. 3 is input, a traveling command is output from the traveling command transmitting means 10A, and the failure detection timer 10B starts counting based on the traveling command. If the elevator is operating normally, there is a running signal 14 and a door opening signal 15 of the elevator within the expiration of the time of the failure detection timer 10B. When these signals are sequentially input, the timer cancel signal sending means 10C sends the timer cancel signal 17 Appears, and the counting operation of the failure detection timer 10B is cancelled. On the other hand, if there is an abnormality in the elevator and there is no running signal 14 and no door opening signal 15 of the elevator within the expiration of the timer of the failure detection timer 10B, the alarm device 10D operates based on the count-out signal of the failure detection timer 10B. , An external alert 20 is issued to a management company or the like.

[0004]

However, when moving a condominium or the like, it is necessary to prevent foreign objects from being pressed against the door opening button of the car operation panel (not shown) or from being caught between the car door and the landing door. By pressing a foreign object against a door safety device (not shown) for detecting and opening the door, and continuing the door open state, while loading or unloading luggage,
In many cases, the car is stopped on the moving floor, and even in such a state, the failure detection timer 10B continues counting.
When the timer expires, the alarm device 10D operates to issue an external alarm 20 to the management company or the like, and the operator is dispatched to the site in response to the alarm. In this case, even if the worker is dispatched, the transportation of the moving luggage is completed and the normal operation is often performed, resulting in wasteful dispatch.

[0005] That is, the external alarm by the conventional failure detection can be called in the car or at the landing, that is,
If the elevator does not run or does not open the door for a certain period of time in a state where it should be running, it is automatically determined to be a failure and a failure report is issued outside the management company. However, if a foreign object is pressed against the door opening button or door safety device of the elevator and the door is kept open for a long period of time, if a certain period of time has passed even in this state, it will be determined that a failure has occurred, and a failure alarm will be issued. In this case, when the worker arrives, the moving luggage has been carried and the useless dispatch is performed.

In order to prevent such useless dispatch,
The set time of the failure detection timer 10B can be set long in consideration of the transport time of the moving luggage. However, in this case, there is a problem that the external alarm 20 is delayed when there is a real failure, and improvement is necessary. is there.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is possible to reliably identify and detect a door opening / closing failure state due to a failure and to issue an alarm. It is an object of the present invention to provide an elevator failure alarm device that can prevent a worker from being unnecessarily dispatched.

[0008]

An elevator failure alerting device according to the present invention comprises: a traveling command transmitting means for transmitting a driving command based on an input signal of a car call or a hall call;
A failure detection timer for starting a counting operation based on the traveling command; timer cancellation signal transmitting means for transmitting a timer cancellation signal when an elevator traveling signal and a door opening signal are sequentially input; and a time expiration of the failure detection timer. A warning device that issues a warning based on the count-out output from the failure detection timer when the timer cancel signal is not transmitted within a time period. Current detection means for detecting a current flowing through the armature of the door motor driving the car door through the detection contact and transmitting a detection output; and a detection output by the current detection means after the count operation of the failure detection timer is started. If not, set the timer to switch the time of the failure detection timer. It is characterized in that a vessel.

Further, the timer cancel signal sending means sends a cancel signal of the counting operation of the failure detection timer when a detection output is sent from the current detection means within the expiration of the time of the failure detection timer. It is a feature.

[0010] Further, the current detecting means includes a fully-closed detection contact which opens when the car door is fully closed, and a current to the armature which flows through the fully-opened detection contact. A resistor is connected in parallel, a current flowing through the armature is detected through the resistor, and a detection output is transmitted.

[0011]

In the elevator failure alarm device according to the present invention, a detection output is detected by detecting a current flowing through an armature of a door motor that drives the car door through a fully open detection contact that opens when the car door is fully opened. By providing a current detecting means for transmitting and a timer switch for setting a time switch of the failure detection timer when the detection output by the current detection means is not transmitted after the counting operation of the failure detection timer is started, the door is opened and closed. The failure state of the elevator is judged from the current of the door motor for the elevator, and the time of the failure detection timer for reporting the failure is changed, so that the time due to the actual failure can be appropriately set, and the door opening / closing failure state due to the failure Can be reliably detected and alerted to prevent unnecessary dispatch of workers even though they are not actual failures. It is possible.

The timer cancel signal sending means sends a cancel signal of the counting operation of the failure detection timer when the detection output is sent from the current detection means within the time expiration of the failure detection timer. If the act of pressing a foreign object against the door open button or door safety device of the car operation panel or maintaining the door open state continuously is canceled within the expiration of the failure detection timer, an alarm is erroneously issued from the alarm device. To prevent

Further, the current detecting means includes a fully closed detection contact which opens when the car door is fully closed, and a current to the armature which flows through the fully open detection contact. A fully-closed detection contact of the car door is connected in series to the armature of the door motor by detecting a current flowing through the armature through the resistance and sending out a detection output. In this case, when the fully closed detection contact is opened, it is possible to prevent an erroneous alarm from being issued from the alarm device.

[0014]

【Example】

Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a system configuration diagram of a failure alarm device 10 according to a first embodiment provided in an elevator control panel. In FIG. 1, the same parts as those of the conventional failure reporting device shown in FIG.
Is a car call 12 or a hall call 13 as in the conventional example.
The travel command sending means 10A for sending a travel command based on the input signal of the above, a failure detection timer 10B for starting a count operation based on the travel command, the travel signal 14 and the door open signal 15 of the elevator are sequentially input. A timer cancel signal transmitting means 10C for transmitting a timer cancel signal at the time, and a failure detection timer 10B for transmitting a timer cancellation signal when the timer cancellation signal is not transmitted within the expiration of the failure detection timer 10A due to an abnormality in the elevator.
And an alarm device 10D that issues an external alarm 20 to the management company or the like based on the count-out output of the current detection device. A timer switch 10E is provided for setting a time switch of the failure detection timer 10B when no output is transmitted.

That is, in the failure alarm device 10 according to the first embodiment shown in FIG. 1, when the car door is fully opened, no electric current flows through the door motor armature. When a foreign object is pressed against the open button or a foreign object is pressed against the door safety device to keep the door open, the current detection device 9 does not output for a long time. In such a case, the switching is set by the timer switch 10E so as to extend the time of the failure detection timer 10B.

Here, the car door is controlled by a door motor as shown in a schematic configuration diagram of the car door closing device shown in FIG. 2, and a control circuit of the door motor is shown in FIG. Circuit shown. That is, in FIG. 2, 1 is a cab, 2 is a car door, 3 is a door motor,
Is a door-opening machine having a full-open detection contact point of the car door 2 described later,
Reference numeral 5 denotes a drive wire. The car door 2 is opened and closed by a door motor 3 via the drive wire 5, and the door motor 3 is controlled by a door closing machine 4. Further, in FIG.
Denotes a fully open detection contact of the car door 2 and a resistor connected in series to the armature 8 of the door motor 3; a current detection device 9 is provided between both ends of the resistor 7; The current flowing through the armature 8 is detected.

Normally, a current flows through the armature 8 of the door motor 3 except when the car door 2 is fully opened and the fully open detection contact 6 interrupts the circuit. Supplying medium pressing force. During this time, the current detecting device 9 detects the voltage drop of the resistor 7 and outputs an output. However, when the car door 2 is fully opened and the fully open detection contact 6 interrupts the circuit, no current flows through the armature 8 of the door motor 3, and the current detection device 9 cannot detect the voltage effect of the resistor 7 and outputs an output. Not issued.

For example, FIGS. 4 and 5 are a structural view of a car operation panel for explaining a state where the car door 2 is fully opened for a long time and an explanatory view showing a door safety device of the car door. In FIG.
21 is a car operation panel, 22 is a car call button, 23 is a door closing button, 2
4 is a foreign substance, 25 is a car operation panel switch box,
In FIG. 5, reference numeral 26 denotes a landing frame, reference numeral 27 denotes a landing door, reference numeral 28 denotes a landing sill, and reference numeral 29 denotes a car door for detecting that a foreign object is caught between the car door 2 and the landing door 27 and opening the door. The safety device 30 indicates a car threshold, and as in a car operation panel 21 shown in FIG. 4, a foreign object 24 is pressed against the door open button 23, and the door open button 23 is continuously pressed for a long time to make the door open, As in the case of the car door 2 shown in FIG. 5, when the foreign object 24 is pressed against the car door safety device 29 to keep the door open for a long time, the current detection device 9 does not output any output during that time. In such a case, the time of the failure detection timer 10B is extended by the timer switch 10E based on the output of the current detection device 9 in order to prevent the external notification 20 from being issued from the notification device 10D shown in FIG. To make the switch settings .

Next, the operation according to the first embodiment having the above configuration will be described with reference to the flowchart shown in FIG. When the signal of the car call 12 or the hall call 13 is input (step SA1), a traveling command is output from the traveling command transmitting means 10A, and based on the traveling command, after several seconds in consideration of the time when the car door 2 is closed. Failure detection timer 10B
Starts a time counting operation (step SA2).

When the car door 2 is closed based on the traveling command, the fully open detection contact 6 in the door closing machine 4 is closed, and a current flows through the armature 8 of the door motor 3, and based on this, the current detection device 9 Sends an output (step SA2 → step SA4). As a result, the failure detection timer 10B performs time counting with the normal time setting (step SA).
5).

On the other hand, while the car door 2 is closed based on the traveling command, the foreign matter 24 is pressed against the door open button 23 of the car operation panel 21 or the foreign matter 24 is pressed against the door safety device 29 to open the door. When the car door 2 is not maintained, the car door 2 does not close. Therefore, the fully open detection contact 6 shown in FIG. 3 is opened, no current flows through the armature 8 of the door motor 3, and the current detection device 9 outputs Since it is not sent (step SA
4) The timer switch 10E operates (step SA)
6), the failure detection timer 10B is set to the extension time and time counting is performed (step SA7). Once the extension timer is set, it does not return to the normal time.

Thus, the failure detection timer 10B
Is set, and the door opening operation is performed after traveling based on the traveling command. However, before the time of the failure detection timer 10B expires (step SA8), after the traveling signal 14 is inputted, the door opening signal 15 is inputted. (Step SA9), the timer cancel signal is sent from the timer cancel signal sending means 10C to cancel the time counting operation of the failure detection timer 10B and return to the initial state (step SA10).

On the other hand, if the driving signal 14 is not input,
Failure detection timer 1 without input of door open signal 15 after traveling
When the time of 0B expires (steps SA9 → SA3 →
SA8 or step SA9 → SA3 to SA5 → SA
8, or step SA9 → SA3 → SA4 → SA6 ~
SA8), the alarm device 10D is activated based on the timeout signal of the failure detection timer 10B, and performs the external alarm 20 (steps SA11 and SA12).

Thus, the door opening button 23 of the car operating panel 21
The foreign matter 24 against the door safety device 29,
The time of the failure detection timer 10B when the door is continuously maintained by pressing the button can be set separately from the normal time, the time due to the actual failure can be appropriately set, and the door opening / closing failure state due to the failure can be set. Identification and detection can be made and an alarm can be issued, and it is possible to prevent a worker from being unnecessarily dispatched even though there is no failure.

Embodiment 2 FIG. In the above-described first embodiment, when the signal of the car call 12 or the hall call 13 is input while the foreign object 24 is pressed against the door open button 23 or the like of the car operation panel 21 and the door is continuously opened, the failure detection timer 10B is timed. The counting operation is started, but if the pressing of the foreign object 24 is removed near the expiration time of the failure detection timer 10B, the failure detection timer 10B outputs an output and the alarm device 10D operates despite the start of traveling. The external alarm 20 is performed. In the second embodiment, however, such a problem is solved. The timer cancel signal transmitting means 10C of the first embodiment shown in FIG. A device for sending a cancel signal for canceling the counting operation of the failure detection timer 10B when an output is sent from the current detection device 9 within the expiration time. It is added so as to.

That is, as shown in the operation flowchart of FIG. 7, after step SA2 in the flowchart similar to that of the first embodiment shown in FIG. 6, after the count operation of the failure detection timer 10B starts, the detection output is sent from the current detection device 9. Then, the timer cancel signal sending means 10C
For example, it is determined that the foreign matter 24 is removed from the door opening button 23 or the like of the car operation panel 21 and the continuous door opening state is removed, and a cancel signal is issued to cancel the failure detection timer 10B and return to the initial state. By adding SB1 and step SB2, it is possible to prevent the external alarm 20 from being erroneously issued when the foreign matter 24 is removed.

Embodiment 3 FIG. Next, in the third embodiment, when the current to the armature 8 flows through the fully-closed detection contact that opens when the car door 2 is fully closed and the fully-opened detection contact 6 described above, the current shown in FIG. As the detection device 9, a resistor is connected in parallel between both ends of the fully closed detection contact, and a current flowing through the armature 8 is detected through the resistor to send out a detection output. By opening it, it is possible to prevent an erroneous alarm from the alarm device 10D.

That is, in some elevators, if the car door 2 is heavy and the door closing force is maintained during traveling by its own weight, a control circuit for supplying current to the armature 8 as shown in FIG. In some cases, a full-closed detection contact 31 that opens when the car door 2 is fully closed is connected in series with the car full-opening detection contact 6 to disconnect the current to the armature 8 of the door motor.

In this case, a malfunction occurs in the configurations of the first and second embodiments. In the third embodiment, as shown in FIG.
A high resistance 32 for detection is connected in parallel with the fully closed detection contact 31 so that the circuit does not malfunction, and the voltage drop is introduced into the current detection device 9. Sends out the detection output, thereby preventing the alarm device 10D from erroneously generating an alarm when the fully closed detection contact 31 is opened.

Embodiment 4 FIG. In the first to third embodiments described above, the voltage drop of the circuit resistor 7 was used. However, there is a case where there is no appropriate circuit resistance. In the fourth embodiment, as shown in FIG. 9, the current transformer CT33 is used. This is to detect current.

[0031]

As described above, according to the present invention, the detection output is detected by detecting the current flowing through the armature of the door motor that drives the car door via the full-open detection contact that opens when the car door is fully opened. By providing a current detecting means for transmitting and a timer switch for setting a time switch of the failure detection timer when the detection output by the current detection means is not transmitted after the counting operation of the failure detection timer is started, the door is opened and closed. The failure state of the elevator is judged from the current of the door motor for the elevator, and the time of the failure detection timer for reporting the failure is changed, so that the time due to the actual failure can be appropriately set, and the door opening / closing failure state due to the failure Can be identified and detected and an alarm can be issued, preventing the worker from being dispatched in spite of no actual failure. There is an effect that.

The timer cancel signal sending means sends the cancel signal of the counting operation of the failure detection timer when the detection output is sent from the current detection means within the expiration of the time of the failure detection timer. If the act of pressing a foreign object against the door open button or door safety device of the car operation panel or maintaining the door open state continuously is canceled within the expiration of the failure detection timer, an alarm is erroneously issued from the alarm device. There is an effect that it can prevent that.

Further, the current detecting means includes a fully closed detection contact which opens when the car door is fully closed, and a current to the armature which flows through the fully open detection contact. A fully-closed detection contact of the car door is connected in series to the armature of the door motor by detecting a current flowing through the armature through the resistance and sending out a detection output. In this case, by opening the fully closed detection contact, there is an effect that an erroneous alarm from the alarm device can be prevented.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing an elevator failure alarm device according to the present invention.

FIG. 2 is a schematic configuration diagram of a car door closing device.

FIG. 3 is a control circuit diagram of a door motor including the current detection device according to the first embodiment of the present invention.

FIG. 4 is a configuration diagram of a car operation panel for explaining the present invention.

FIG. 5 is a configuration diagram of a door closed for explaining the present invention.

FIG. 6 is an operation flowchart according to the first embodiment of the present invention.

FIG. 7 is an operation flowchart according to the second embodiment of the present invention.

FIG. 8 is a control circuit diagram of a door motor including a current detection device according to Embodiment 3 of the present invention.

FIG. 9 is a control circuit diagram of a door motor including a current detection device according to Embodiment 4 of the present invention.

FIG. 10 is a system configuration diagram showing an elevator failure alarm device according to a conventional example.

[Explanation of symbols]

2 Car door, 3 door motor, 4 door closing machine, 6 fully open detection contact, 8 door motor armature, 9 current detection device, 10 failure alarm device, 10A running command transmission means, 10B failure detection timer, 10C timer cancellation signal transmission Means, 10D alarm device, 10E timer switch, 12 car call, 13 landing call, 14
Running signal, 15 door open signal, 20 external alarm, 21 car operation panel, 22 car call button, 24 foreign matter, 29 door safety device, 31 fully closed detection contact, 32 high resistance for detection.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B66B 3/00 B66B 5/02 B66B 13/14

Claims (3)

(57) [Claims] 1. A travel command transmitting means for transmitting a travel command based on an input signal of a car call or a hall call, a failure detection timer for starting a count operation based on the travel command, a travel signal of an elevator, and a door opening. Timer cancel signal sending means for sending a timer cancel signal when signals are sequentially input, and a timer cancel signal sending means based on a count-out output from the fault detection timer when the timer cancel signal is not sent within the expiration of the fault detection timer. In the elevator failure alarm device provided with an alarm device for alarming, an electric current flowing through an armature of a door motor driving the car door is detected and detected through a fully open detection contact that opens when the car door is fully opened. A current detecting means for outputting an output; and a current detecting means for starting the counting operation of the failure detection timer. A failure alarm device for an elevator, comprising: a timer switch for performing time switching setting of the failure detection timer when a detection output by a stage is not transmitted. 2. The timer cancel signal sending means sends a cancel signal of the counting operation of the failure detection timer when a detection output is sent from the current detection means within the expiration of the time of the failure detection timer. The elevator failure alarm device according to claim 1, wherein: 3. The full-close detection contact both ends when current to the armature flows through a full-close detection contact that opens when the car door is fully closed and the full-open detection contact. 3. An elevator fault alerting device according to claim 1, wherein a resistor is connected in parallel between the resistors, and a current flowing through the armature is detected through the resistor to output a detection output.