JPH04345490A - Emergency operation device of elevator - Google Patents

Abstract

PURPOSE:To prevent trouble interrupting a rescue operation by emergent-stopping the cage of an elevator in an emergency such as a power failure, machine trouble, and fire, and carrying out rescue operation to the nearest floor by operating an operation button when a substance to convey in the cage generates a power shortage or a light shielding condition. CONSTITUTION:When a substance to convey moves to shield the optical axis of a photoelectric detector 15 owing to an abnormal condition in the upward running of an elevator cage, a photoelectric detecting relay 8 is de-energized to open a constant opening contact 8a. Since an entrance door switch 7 is being opened, a safety confirming relay 9 is de-energized to open a constant opening contact 9a, and an UP running relay 12 is de-energized to stop the cage as an emergency condition. When a power failure, a machine trouble, and the like are generated, the power source of the photoelectric detector 15 is also cut off or deteriorated, and the cage is emergent-stopped by the de-energization of the photoelectric detecting relay 8. In this case, a spare power source of a battery and the like is made available to operate an emergency operation, an emergency operation movable contact is closed, and by pushing a destination button 1B to the nearest floor, the safety confirming relay 9 is energized, the constant opening contact 9a is closed, and the cage is started to run. In case of a fire to stop the cage by the smoke, the same operation can be used.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to an emergency operation device for an elevator that performs emergency rescue operations using battery power in the event of an emergency such as a power outage or failure. This invention relates to an emergency operation system for elevators for transporting objects such as automobiles, which is installed and monitored to prevent them from falling from the elevator car.

0002

[Prior Art] Conventionally, in car elevators installed in tower buildings where cars are parked, a door is not provided on the elevator car, and instead a photoelectric detector is installed at the entrance/exit to ensure safety. There is something I did. When a car in an elevator car moves out of its predetermined position while going up or down, a photoelectric detector immediately detects this without contact and stops the elevator in an emergency, preventing interference with peripheral equipment or falling accidents. It is something to do. Even in such automobile elevators, when an emergency situation such as a power outage or breakdown occurs, the elevator is brought to an emergency stop just like a normal elevator.
In order to prevent passengers from being stuck in the elevator car after an emergency stop, if it is deemed safe to do so, it is possible to carry out a rescue operation to the nearest floor using battery power. There is also.

[0003] Regarding rescue operations of elevators in emergencies, for example, a technique is disclosed in Japanese Patent Publication No. 48-42156. According to this, an emergency power source is used when the elevator is stopped, Since the direction of the lighter operating load is automatically determined based on the state of the load and the load on the counterweight, it is possible to obtain enough power to operate the car even when the car is stopped, while consuming the least amount of emergency power. Passengers can be safely rescued from the landing.

0004

[Problems to be Solved by the Invention] By the way, conventional elevator emergency operation devices do not allow emergency operation such as power outages or breakdowns.
Normally, the power of the photoelectric detector is also cut off or reduced, so it is determined that the optical axis is blocked, and after the car makes an emergency stop even though it has stopped at a predetermined safe position in the elevator car. , it was not possible to perform a rescue operation using battery power. Also, even if the capacity of the battery power source is increased to supply the required power to the photoelectric detector,
For example, in the event of a power outage due to a fire or the like, if smoke fills the hoistway and blocks the optical axis, rescue operation after an emergency stop will be impossible, as described above.

[0005] Accordingly, the present invention provides a system for detecting light in the event of an emergency such as a power outage, breakdown, or fire, when the photoelectric detection means for detecting the positional shift of a transported object such as a car in a car is in a light-blocking state due to a lack of power supply or smoke from a fire. Another object of the present invention is to provide an emergency operation device for an elevator that enables rescue operation to the nearest floor using a backup power source after an emergency stop of the elevator.

[0006]

[Means for Solving the Problems] The emergency operation device for an elevator according to claim 1 is capable of making an emergency stop of an elevator car in an emergency such as a power outage, a breakdown, or a fire, and locating a transported object in an elevator car without a car door. When the photoelectric detection means for detecting deviation is blocked from light due to a lack of power or smoke from a fire,
The rescue operation movable means enables rescue operation to the nearest floor through operation of an operation button. The elevator emergency operation device according to claim 2 is the elevator emergency operation device according to claim 1, further comprising communication means for notifying passengers in the elevator car of the operation of the operation button after an emergency stop. .

[0007]

[Operation] According to claim 1, even if the elevator car comes to an emergency stop in the event of an emergency such as a power outage, breakdown, or fire, and the photoelectric detection means is in a light-blocking state due to a lack of power or smoke from a fire,
Rescue operation Since rescue operation is possible with the movable means, by operating the operation button after determining that it is safe,
The elevator car can run to the nearest floor using backup power. According to the second aspect of the present invention, since the elevator car is provided with communication means for notifying passengers in the elevator car of the operation of the operation button, it is possible to guide the passengers to take measures especially in the event of an emergency stop, and it is possible to respond quickly. Passengers can quickly escape to the nearest floor.

[0008]

【Example】

<First Embodiment> First, a first embodiment of the present invention will be described based on FIG. 1. FIG. 1 is a circuit diagram showing a relay circuit of an emergency operation device for an elevator according to a first embodiment of the present invention. The first embodiment is applied to a three-story automobile tower building. In the figure, 1A and 1B are the 1st floor destination buttons of the car operation panel provided in the elevator car, and 2A and 2B are the 2nd floor destination buttons. Destination buttons 3A and 3B are third floor destination buttons. 1
is a first floor car call registration relay that is energized when the first floor destination button 1A is pressed, 1a is its normally open contact, and 1b is its normally closed contact. 2 is the second floor car call registration relay, 2a is its normally open contact, 2b is its normally closed contact, and 3 is the third floor car call registration relay, 3a is its normally open contact, and 3b is its normally closed contact. It is.

4 enables car call registration by energizing when the 1st floor car call registration relay 1 to 3rd floor car call registration relay 3 are not energized, and deactivates when even one car call is registered. Car call restriction relays, 4a to 4c, that prevent car call registration by
is its normally open contact. 5 is a car call self-holding circuit that holds the car call when it is registered and releases it when the elevator car arrives at the car call floor.

Reference numeral 6 denotes a safety circuit such as an emergency stop and speed governor used in an emergency, which is closed during normal times and opened when a safety device is activated. 7 is a landing door switch that opens when the door is closed and closes when the door is opened. 1
Reference numeral 5 indicates one or more photoelectric detectors installed horizontally or vertically at the entrance or exit of an elevator car, and is composed of a pair of light emitter and light receiver; 8 indicates an optical axis of the photoelectric detector 15 through which light passes. 8a is a normally open contact of the photoelectric detection relay, which is energized when a car or the like in the elevator car protrudes from a predetermined area and blocks the optical axis, or when the power of the photoelectric detector 15 is insufficient. be. 9 is a safety confirmation relay that is energized when the safety circuit 6 is normal and deenergized when it is abnormal, and 9a is its normally open contact.

10 and 11 are well-known UP running condition circuits and DN running condition circuits that determine the direction by a car call or a hall call and close after confirming that the door is closed; 12 is an UP running relay; 13
is a DN running relay. Reference numeral 14 is a feature of the present invention, and is an emergency operation movable contact that closes when an emergency operation for rescue to the nearest floor is possible using a battery power source.

Next, the operation of the elevator emergency operation system of this embodiment constructed as described above will be explained. Now, during normal operation, if the elevator car is on the 1st floor, a car is on board, and no car call has been registered yet, 1st floor car call registration relay 1 to 3rd floor car call registration relay 3
is deenergized, its normally open contacts 1b to 3b are closed, and the car call restriction relay 4 is energized by the circuit from + to 4 to 1b to 2b to 3b to -, and its normally open contacts 1b to 3b are closed. 4a to 4c are closed.

[0013]Here, if you press the destination button 3A on the third floor, +~
The third floor car call registration relay 3 is energized by the circuits 3A to 4c to 3 to -. At this time, if the car is stopped at a predetermined position, the optical axis passes light, so the photoelectric detection relay 8 is energized, and its normally open contact 8a is closed, so that +~6~8
The safety confirmation relay 9 is energized by the circuits a to 9 to -.
Its normally open contact 9a is closed. Since the third floor car call registration relay 3 is energized, the UP running condition circuit 10 is enabled in a well-known circuit, and +~9a~10~12~-
The circuit energizes the UP traveling relay 12, and the elevator car travels UP.

The above example shows the case of moving from the 1st floor to the 3rd floor, but conversely, when moving from the 3rd floor to the 1st floor, the 3rd floor
On the floor, press the destination button 1A on the 1st floor, 1A~4a~1
The registration relay 1 on the first floor is energized by the circuit from ~-, the DN running condition circuit 11 is enabled and the UP running condition circuit 10 is disabled by the well-known circuit, and the circuit from + to 9a to 11 to 13 to - is activated. The DN running relay 13 is energized, and the elevator car runs DN.

By the way, while the elevator car is running from the first floor to the third floor, if a car moves due to some abnormality and interrupts the optical axis of the photoelectric detector 15, the photoelectric detection relay 8 is deenergized and its normally open contact 8a is open. At this time, since the landing door is closed, the landing door switch 7 is open. Therefore, the safety confirmation relay 9 is deenergized, its normally open contact 9a is opened, the UP travel relay 12 is deenergized, and the elevator car comes to an emergency stop. Therefore, by taking necessary measures by attendants, maintenance personnel, etc., accidents such as cars getting caught between peripheral equipment or falling can be prevented.

[0016] Furthermore, when a power outage, failure, etc. occurs, the power to the photoelectric detector 15 is usually cut off or reduced, so
The photoelectric detection relay 8 is deenergized even though the automobile is stopped at a predetermined position within the elevator car. Therefore, similarly to the above case, the normally open contact 8a is opened, the landing door switch 7 is also opened and the safety confirmation relay 9 is deenergized, and the normally open contact 9a is opened and the UP traveling relay 12 is deenergized. The elevator car comes to an emergency stop. However, in this case,
Unlike when a car leaves a predetermined position in an elevator car, it is desirable to avoid a situation in which passengers are trapped in an elevator car when it is judged to be safe using a backup power source such as a battery. In this state, when emergency operation becomes possible with the battery power supply, the emergency operation movable contact 14 closes. Here, 1st floor destination button 1B~
When you press the destination button on the nearest floor among the 3rd floor destination buttons 3B, for example, the 1st floor destination button 1B, the safety confirmation relay 9 is energized by the circuit from + to 6 to 14 to 1B to 9 to -, and is normally open. The contact point 9a closes and the elevator car travels to the nearest floor using a well-known emergency operation means.

[0017] Even if the capacity of the battery power supply is increased to compensate for the power shortage of the photoelectric detector 15, in the event of a power outage due to a fire, the shaft will be filled with smoke, and the optical axis will be blocked by this smoke, causing the same problem. In some cases, the photoelectric detection relay 8 may not be energized, but in this case as well, when emergency operation becomes possible due to battery power, the emergency operation movable contact 14 closes, and if the destination button is operated there, the , you can travel to the nearest floor.

As described above, the elevator emergency operation device of the above embodiment makes an emergency stop of the elevator car in the event of an emergency such as a power outage, breakdown, or fire, and the photoelectric detector 15 detects the positional shift of the transported object in the car. When the emergency operation movable contact 14, which serves as a rescue operation movable means, becomes in a state where emergency operation is possible, it closes to operate any of the destination buttons 1B to 3B. This makes it possible to conduct a rescue operation by moving to the nearest floor.

Therefore, according to the above embodiment, even if the elevator car makes an emergency stop and the photoelectric detector 15 is blocked from light due to a power shortage or smoke from a fire, the rescue operation movable means will not be able to initiate the rescue operation. If possible and it is deemed safe, by operating the operation button, the elevator car can be run to the nearest floor using battery power and rescued. As a result, it is possible to solve the problem of not being able to rescue passengers in the elevator car even though the car is stopped at a predetermined safe position.

<Second Embodiment> Next, a second embodiment of the present invention will be described based on FIG. 2. FIG. 2 is a circuit diagram showing a relay circuit of an elevator emergency operation device according to a second embodiment of the present invention. In the figure, the same reference numerals as in FIG. 1 indicate the same or corresponding parts as those in the first embodiment. In the figure, 1
Both 4a and 14b are emergency operation movable contacts that close when the battery power supply allows emergency operation to carry out rescue to the nearest floor, 8b is a normally closed contact of the photoelectric detection relay 8, and 16 is a contact in the elevator car. When the installed in-car indicator lights up, it displays, for example, ``Press the destination button.'' That is, the second embodiment adds an emergency operation movable contact 14b, a normally closed contact 8b, and an in-car indicator 16 to the first embodiment.

Next, the operation of the elevator emergency operation system of the second embodiment will be explained. Suppose that an elevator car is traveling from the first floor to the second floor when it comes to an emergency stop due to a power outage. This emergency stop operation is similar to the first embodiment, and when the power to the photoelectric detector 15 decreases due to a power outage, the photoelectric detection relay 8 is deenergized and its normally open contact 8a is opened. At this time, since the vehicle is traveling and the landing door is closed, the landing door switch 7 is open. Therefore, the safety confirmation relay 9 is deenergized, its normally open contact 9a is opened, and the U
The P travel relay 12 is deenergized and the elevator car comes to an emergency stop. After the emergency stop, when emergency operation is enabled by the battery power supply, the emergency operation movable contact 14a and the emergency operation movable contact 14b are closed.

On the other hand, when the photoelectric detection relay 8 is deenergized due to a power outage, its normally closed contact 8b is closed, so when the emergency operation movable contact 14b is closed as described above, +~14b~
The in-car indicator 16 is lit by the circuits 8b to 16 to -, and the message "Press destination button" is displayed. Therefore, passengers in the elevator car follow this display and, for example,
When you press the floor destination button 1B, +~6~14a~1B~9~
The safety confirmation relay 9 is energized by the circuit -, and a rescue operation to the nearest floor, that is, a DN run to the first floor, is performed by a well-known emergency operation means.

As described above, since the elevator emergency operation device of the second embodiment is provided with the in-car indicator 16, it can be expected to have the same effects as the first embodiment, especially when an emergency stop occurs. Since the measures to be taken by the passengers can be guided by the display inside the elevator car, prompt responses can be taken and the passengers can quickly escape to the nearest floor. Although the above description has been made regarding a power outage, it goes without saying that rescue operation can also be performed in the same way when the photoelectric detection relay 8 is deenergized due to a lack of power to the photoelectric detector 15 or light shielding due to smoke in the event of an emergency such as a breakdown or fire. .

By the way, in each of the above embodiments, after an emergency stop, the rescue operation to the nearest floor is started by operating the destination button, but when implementing the present invention, this The system is not limited to this, and may be activated by operating an emergency button, intercom button, door opening button, etc. installed on the car operation panel. In addition, the second embodiment described above is
Although the in-cage display 16 guides the start operation of the rescue operation, the present invention is not limited to this; for example, the guidance may be provided by voice means or by a method similar to this. It is also possible to report by using in combination.

[0025]

As described above, the elevator emergency operation device of the invention of claim 1 makes an emergency stop of the elevator car in an emergency such as a power outage, breakdown, or fire, and detects the positional shift of the transported object in the car. When the photoelectric detection means is blocked from light due to lack of power or smoke from a fire, the rescue operation movable means enables rescue operation to the nearest floor by operating an operation button. Therefore, in an emergency, even if the elevator car comes to an emergency stop and the photoelectric detection means is blocked from light due to a lack of power or smoke from a fire, the rescue operation movable means enables rescue operation, and by operating the operation button, Backup power allows the elevator car to travel to the nearest floor and rescue the victim. As a result, it is possible to solve the problem of not being able to perform a rescue operation even though the vehicle is stopped at a predetermined safe position.

[0026] According to a second aspect of the invention, the emergency operation device for an elevator according to the first aspect is provided with communication means for informing passengers in the elevator car of the operation of the operation button after an emergency stop. Therefore, in addition to the effect of claim 1,
After an emergency stop, the measures taken by passengers in the elevator car can be guided, allowing quick response and allowing passengers to quickly escape to the nearest floor.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing a relay circuit of an emergency operation device for an elevator according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram showing a relay circuit of an elevator emergency operation device according to a second embodiment of the present invention.

[Explanation of symbols]

1B 1st floor destination button 2B 2nd floor destination button 3B 3rd floor destination button 14, 14a, 14b Emergency operation movable contact 15 Photoelectric detector

Claims (2)

[Claims] 1. Photoelectric detection means for detecting when an object to be transported in an elevator car without a car door leaves a predetermined area and transmitting an emergency stop signal for the elevator car;
In an emergency such as a power outage, breakdown, or fire, when the elevator car makes an emergency stop and the photoelectric detection means is in a power shortage state,
An emergency operation device for an elevator, characterized in that it is equipped with a rescue operation movable means that enables a rescue operation to the nearest floor through the operation of an operation button when the light is blocked by fire smoke or the like. 2. Photoelectric detection means for detecting when an object to be transported in an elevator car without a car door leaves a predetermined area and transmitting an emergency stop signal for the elevator car;
In an emergency such as a power outage, breakdown, or fire, when the elevator car makes an emergency stop and the photoelectric detection means is in a power shortage state,
or a rescue operation movable means that enables a rescue operation to the nearest floor by operating an operation button when light is blocked due to fire smoke, etc.; An emergency operation device for an elevator, comprising: communication means for communicating the operation of the elevator.